Lady’s Gitweb - Gitweb/blob - gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 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
  61 # URI of GIT logo (72x27 size)
  62 our $logo = "++GITWEB_LOGO++";
  63 # URI of GIT favicon, assumed to be image/png type
  64 our $favicon = "++GITWEB_FAVICON++";
  65
  66 # URI and label (title) of GIT logo link
  67 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  68 #our $logo_label = "git documentation";
  69 our $logo_url = "http://git.or.cz/";
  70 our $logo_label = "git homepage";
  71
  72 # source of projects list
  73 our $projects_list = "++GITWEB_LIST++";
  74
  75 # default order of projects list
  76 # valid values are none, project, descr, owner, and age
  77 our $default_projects_order = "project";
  78
  79 # show repository only if this file exists
  80 # (only effective if this variable evaluates to true)
  81 our $export_ok = "++GITWEB_EXPORT_OK++";
  82
  83 # only allow viewing of repositories also shown on the overview page
  84 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  85
  86 # list of git base URLs used for URL to where fetch project from,
  87 # i.e. full URL is "$git_base_url/$project"
  88 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  89
  90 # default blob_plain mimetype and default charset for text/plain blob
  91 our $default_blob_plain_mimetype = 'text/plain';
  92 our $default_text_plain_charset  = undef;
  93
  94 # file to use for guessing MIME types before trying /etc/mime.types
  95 # (relative to the current git repository)
  96 our $mimetypes_file = undef;
  97
  98 # You define site-wide feature defaults here; override them with
  99 # $GITWEB_CONFIG as necessary.
 100 our %feature = (
 101         # feature => {
 102         #       'sub' => feature-sub (subroutine),
 103         #       'override' => allow-override (boolean),
 104         #       'default' => [ default options...] (array reference)}
 105         #
 106         # if feature is overridable (it means that allow-override has true value,
 107         # then feature-sub will be called with default options as parameters;
 108         # return value of feature-sub indicates if to enable specified feature
 109         #
 110         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 111
 112         # Enable the 'blame' blob view, showing the last commit that modified
 113         # each line in the file. This can be very CPU-intensive.
 114
 115         # To enable system wide have in $GITWEB_CONFIG
 116         # $feature{'blame'}{'default'} = [1];
 117         # To have project specific config enable override in $GITWEB_CONFIG
 118         # $feature{'blame'}{'override'} = 1;
 119         # and in project config gitweb.blame = 0|1;
 120         'blame' => {
 121                 'sub' => \&feature_blame,
 122                 'override' => 0,
 123                 'default' => [0]},
 124
 125         # Enable the 'snapshot' link, providing a compressed tarball of any
 126         # tree. This can potentially generate high traffic if you have large
 127         # project.
 128
 129         # To disable system wide have in $GITWEB_CONFIG
 130         # $feature{'snapshot'}{'default'} = [undef];
 131         # To have project specific config enable override in $GITWEB_CONFIG
 132         # $feature{'snapshot'}{'override'} = 1;
 133         # and in project config gitweb.snapshot = none|gzip|bzip2;
 134         'snapshot' => {
 135                 'sub' => \&feature_snapshot,
 136                 'override' => 0,
 137                 #         => [content-encoding, suffix, program]
 138                 'default' => ['x-gzip', 'gz', 'gzip']},
 139
 140         # Enable text search, which will list the commits which match author,
 141         # committer or commit text to a given string.  Enabled by default.
 142         'search' => {
 143                 'override' => 0,
 144                 'default' => [1]},
 145
 146         # Enable the pickaxe search, which will list the commits that modified
 147         # a given string in a file. This can be practical and quite faster
 148         # alternative to 'blame', but still potentially CPU-intensive.
 149
 150         # To enable system wide have in $GITWEB_CONFIG
 151         # $feature{'pickaxe'}{'default'} = [1];
 152         # To have project specific config enable override in $GITWEB_CONFIG
 153         # $feature{'pickaxe'}{'override'} = 1;
 154         # and in project config gitweb.pickaxe = 0|1;
 155         'pickaxe' => {
 156                 'sub' => \&feature_pickaxe,
 157                 'override' => 0,
 158                 'default' => [1]},
 159
 160         # Make gitweb use an alternative format of the URLs which can be
 161         # more readable and natural-looking: project name is embedded
 162         # directly in the path and the query string contains other
 163         # auxiliary information. All gitweb installations recognize
 164         # URL in either format; this configures in which formats gitweb
 165         # generates links.
 166
 167         # To enable system wide have in $GITWEB_CONFIG
 168         # $feature{'pathinfo'}{'default'} = [1];
 169         # Project specific override is not supported.
 170
 171         # Note that you will need to change the default location of CSS,
 172         # favicon, logo and possibly other files to an absolute URL. Also,
 173         # if gitweb.cgi serves as your indexfile, you will need to force
 174         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 175         'pathinfo' => {
 176                 'override' => 0,
 177                 'default' => [0]},
 178
 179         # Make gitweb consider projects in project root subdirectories
 180         # to be forks of existing projects. Given project $projname.git,
 181         # projects matching $projname/*.git will not be shown in the main
 182         # projects list, instead a '+' mark will be added to $projname
 183         # there and a 'forks' view will be enabled for the project, listing
 184         # all the forks. If project list is taken from a file, forks have
 185         # to be listed after the main project.
 186
 187         # To enable system wide have in $GITWEB_CONFIG
 188         # $feature{'forks'}{'default'} = [1];
 189         # Project specific override is not supported.
 190         'forks' => {
 191                 'override' => 0,
 192                 'default' => [0]},
 193 );
 194
 195 sub gitweb_check_feature {
 196         my ($name) = @_;
 197         return unless exists $feature{$name};
 198         my ($sub, $override, @defaults) = (
 199                 $feature{$name}{'sub'},
 200                 $feature{$name}{'override'},
 201                 @{$feature{$name}{'default'}});
 202         if (!$override) { return @defaults; }
 203         if (!defined $sub) {
 204                 warn "feature $name is not overrideable";
 205                 return @defaults;
 206         }
 207         return $sub->(@defaults);
 208 }
 209
 210 sub feature_blame {
 211         my ($val) = git_get_project_config('blame', '--bool');
 212
 213         if ($val eq 'true') {
 214                 return 1;
 215         } elsif ($val eq 'false') {
 216                 return 0;
 217         }
 218
 219         return $_[0];
 220 }
 221
 222 sub feature_snapshot {
 223         my ($ctype, $suffix, $command) = @_;
 224
 225         my ($val) = git_get_project_config('snapshot');
 226
 227         if ($val eq 'gzip') {
 228                 return ('x-gzip', 'gz', 'gzip');
 229         } elsif ($val eq 'bzip2') {
 230                 return ('x-bzip2', 'bz2', 'bzip2');
 231         } elsif ($val eq 'none') {
 232                 return ();
 233         }
 234
 235         return ($ctype, $suffix, $command);
 236 }
 237
 238 sub gitweb_have_snapshot {
 239         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 240         my $have_snapshot = (defined $ctype && defined $suffix);
 241
 242         return $have_snapshot;
 243 }
 244
 245 sub feature_pickaxe {
 246         my ($val) = git_get_project_config('pickaxe', '--bool');
 247
 248         if ($val eq 'true') {
 249                 return (1);
 250         } elsif ($val eq 'false') {
 251                 return (0);
 252         }
 253
 254         return ($_[0]);
 255 }
 256
 257 # checking HEAD file with -e is fragile if the repository was
 258 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 259 # and then pruned.
 260 sub check_head_link {
 261         my ($dir) = @_;
 262         my $headfile = "$dir/HEAD";
 263         return ((-e $headfile) ||
 264                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 265 }
 266
 267 sub check_export_ok {
 268         my ($dir) = @_;
 269         return (check_head_link($dir) &&
 270                 (!$export_ok || -e "$dir/$export_ok"));
 271 }
 272
 273 # rename detection options for git-diff and git-diff-tree
 274 # - default is '-M', with the cost proportional to
 275 #   (number of removed files) * (number of new files).
 276 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 277 #   (number of changed files + number of removed files) * (number of new files)
 278 # - even more costly is '-C', '--find-copies-harder' with cost
 279 #   (number of files in the original tree) * (number of new files)
 280 # - one might want to include '-B' option, e.g. '-B', '-M'
 281 our @diff_opts = ('-M'); # taken from git_commit
 282
 283 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 284 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 285
 286 # version of the core git binary
 287 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 288
 289 $projects_list ||= $projectroot;
 290
 291 # ======================================================================
 292 # input validation and dispatch
 293 our $action = $cgi->param('a');
 294 if (defined $action) {
 295         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 296                 die_error(undef, "Invalid action parameter");
 297         }
 298 }
 299
 300 # parameters which are pathnames
 301 our $project = $cgi->param('p');
 302 if (defined $project) {
 303         if (!validate_pathname($project) ||
 304             !(-d "$projectroot/$project") ||
 305             !check_head_link("$projectroot/$project") ||
 306             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 307             ($strict_export && !project_in_list($project))) {
 308                 undef $project;
 309                 die_error(undef, "No such project");
 310         }
 311 }
 312
 313 our $file_name = $cgi->param('f');
 314 if (defined $file_name) {
 315         if (!validate_pathname($file_name)) {
 316                 die_error(undef, "Invalid file parameter");
 317         }
 318 }
 319
 320 our $file_parent = $cgi->param('fp');
 321 if (defined $file_parent) {
 322         if (!validate_pathname($file_parent)) {
 323                 die_error(undef, "Invalid file parent parameter");
 324         }
 325 }
 326
 327 # parameters which are refnames
 328 our $hash = $cgi->param('h');
 329 if (defined $hash) {
 330         if (!validate_refname($hash)) {
 331                 die_error(undef, "Invalid hash parameter");
 332         }
 333 }
 334
 335 our $hash_parent = $cgi->param('hp');
 336 if (defined $hash_parent) {
 337         if (!validate_refname($hash_parent)) {
 338                 die_error(undef, "Invalid hash parent parameter");
 339         }
 340 }
 341
 342 our $hash_base = $cgi->param('hb');
 343 if (defined $hash_base) {
 344         if (!validate_refname($hash_base)) {
 345                 die_error(undef, "Invalid hash base parameter");
 346         }
 347 }
 348
 349 our $hash_parent_base = $cgi->param('hpb');
 350 if (defined $hash_parent_base) {
 351         if (!validate_refname($hash_parent_base)) {
 352                 die_error(undef, "Invalid hash parent base parameter");
 353         }
 354 }
 355
 356 # other parameters
 357 our $page = $cgi->param('pg');
 358 if (defined $page) {
 359         if ($page =~ m/[^0-9]/) {
 360                 die_error(undef, "Invalid page parameter");
 361         }
 362 }
 363
 364 our $searchtext = $cgi->param('s');
 365 if (defined $searchtext) {
 366         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 367                 die_error(undef, "Invalid search parameter");
 368         }
 369         if (length($searchtext) < 2) {
 370                 die_error(undef, "At least two characters are required for search parameter");
 371         }
 372         $searchtext = quotemeta $searchtext;
 373 }
 374
 375 our $searchtype = $cgi->param('st');
 376 if (defined $searchtype) {
 377         if ($searchtype =~ m/[^a-z]/) {
 378                 die_error(undef, "Invalid searchtype parameter");
 379         }
 380 }
 381
 382 # now read PATH_INFO and use it as alternative to parameters
 383 sub evaluate_path_info {
 384         return if defined $project;
 385         my $path_info = $ENV{"PATH_INFO"};
 386         return if !$path_info;
 387         $path_info =~ s,^/+,,;
 388         return if !$path_info;
 389         # find which part of PATH_INFO is project
 390         $project = $path_info;
 391         $project =~ s,/+$,,;
 392         while ($project && !check_head_link("$projectroot/$project")) {
 393                 $project =~ s,/*[^/]*$,,;
 394         }
 395         # validate project
 396         $project = validate_pathname($project);
 397         if (!$project ||
 398             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 399             ($strict_export && !project_in_list($project))) {
 400                 undef $project;
 401                 return;
 402         }
 403         # do not change any parameters if an action is given using the query string
 404         return if $action;
 405         $path_info =~ s,^$project/*,,;
 406         my ($refname, $pathname) = split(/:/, $path_info, 2);
 407         if (defined $pathname) {
 408                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 409                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 410                 $pathname =~ s,^/+,,;
 411                 if (!$pathname || substr($pathname, -1) eq "/") {
 412                         $action  ||= "tree";
 413                         $pathname =~ s,/$,,;
 414                 } else {
 415                         $action  ||= "blob_plain";
 416                 }
 417                 $hash_base ||= validate_refname($refname);
 418                 $file_name ||= validate_pathname($pathname);
 419         } elsif (defined $refname) {
 420                 # we got "project.git/branch"
 421                 $action ||= "shortlog";
 422                 $hash   ||= validate_refname($refname);
 423         }
 424 }
 425 evaluate_path_info();
 426
 427 # path to the current git repository
 428 our $git_dir;
 429 $git_dir = "$projectroot/$project" if $project;
 430
 431 # dispatch
 432 my %actions = (
 433         "blame" => \&git_blame2,
 434         "blobdiff" => \&git_blobdiff,
 435         "blobdiff_plain" => \&git_blobdiff_plain,
 436         "blob" => \&git_blob,
 437         "blob_plain" => \&git_blob_plain,
 438         "commitdiff" => \&git_commitdiff,
 439         "commitdiff_plain" => \&git_commitdiff_plain,
 440         "commit" => \&git_commit,
 441         "forks" => \&git_forks,
 442         "heads" => \&git_heads,
 443         "history" => \&git_history,
 444         "log" => \&git_log,
 445         "rss" => \&git_rss,
 446         "atom" => \&git_atom,
 447         "search" => \&git_search,
 448         "search_help" => \&git_search_help,
 449         "shortlog" => \&git_shortlog,
 450         "summary" => \&git_summary,
 451         "tag" => \&git_tag,
 452         "tags" => \&git_tags,
 453         "tree" => \&git_tree,
 454         "snapshot" => \&git_snapshot,
 455         "object" => \&git_object,
 456         # those below don't need $project
 457         "opml" => \&git_opml,
 458         "project_list" => \&git_project_list,
 459         "project_index" => \&git_project_index,
 460 );
 461
 462 if (!defined $action) {
 463         if (defined $hash) {
 464                 $action = git_get_type($hash);
 465         } elsif (defined $hash_base && defined $file_name) {
 466                 $action = git_get_type("$hash_base:$file_name");
 467         } elsif (defined $project) {
 468                 $action = 'summary';
 469         } else {
 470                 $action = 'project_list';
 471         }
 472 }
 473 if (!defined($actions{$action})) {
 474         die_error(undef, "Unknown action");
 475 }
 476 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 477     !$project) {
 478         die_error(undef, "Project needed");
 479 }
 480 $actions{$action}->();
 481 exit;
 482
 483 ## ======================================================================
 484 ## action links
 485
 486 sub href(%) {
 487         my %params = @_;
 488         # default is to use -absolute url() i.e. $my_uri
 489         my $href = $params{-full} ? $my_url : $my_uri;
 490
 491         # XXX: Warning: If you touch this, check the search form for updating,
 492         # too.
 493
 494         my @mapping = (
 495                 project => "p",
 496                 action => "a",
 497                 file_name => "f",
 498                 file_parent => "fp",
 499                 hash => "h",
 500                 hash_parent => "hp",
 501                 hash_base => "hb",
 502                 hash_parent_base => "hpb",
 503                 page => "pg",
 504                 order => "o",
 505                 searchtext => "s",
 506                 searchtype => "st",
 507         );
 508         my %mapping = @mapping;
 509
 510         $params{'project'} = $project unless exists $params{'project'};
 511
 512         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 513         if ($use_pathinfo) {
 514                 # use PATH_INFO for project name
 515                 $href .= "/$params{'project'}" if defined $params{'project'};
 516                 delete $params{'project'};
 517
 518                 # Summary just uses the project path URL
 519                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 520                         delete $params{'action'};
 521                 }
 522         }
 523
 524         # now encode the parameters explicitly
 525         my @result = ();
 526         for (my $i = 0; $i < @mapping; $i += 2) {
 527                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 528                 if (defined $params{$name}) {
 529                         push @result, $symbol . "=" . esc_param($params{$name});
 530                 }
 531         }
 532         $href .= "?" . join(';', @result) if scalar @result;
 533
 534         return $href;
 535 }
 536
 537
 538 ## ======================================================================
 539 ## validation, quoting/unquoting and escaping
 540
 541 sub validate_pathname {
 542         my $input = shift || return undef;
 543
 544         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 545         # at the beginning, at the end, and between slashes.
 546         # also this catches doubled slashes
 547         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 548                 return undef;
 549         }
 550         # no null characters
 551         if ($input =~ m!\0!) {
 552                 return undef;
 553         }
 554         return $input;
 555 }
 556
 557 sub validate_refname {
 558         my $input = shift || return undef;
 559
 560         # textual hashes are O.K.
 561         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 562                 return $input;
 563         }
 564         # it must be correct pathname
 565         $input = validate_pathname($input)
 566                 or return undef;
 567         # restrictions on ref name according to git-check-ref-format
 568         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 569                 return undef;
 570         }
 571         return $input;
 572 }
 573
 574 # quote unsafe chars, but keep the slash, even when it's not
 575 # correct, but quoted slashes look too horrible in bookmarks
 576 sub esc_param {
 577         my $str = shift;
 578         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 579         $str =~ s/\+/%2B/g;
 580         $str =~ s/ /\+/g;
 581         return $str;
 582 }
 583
 584 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 585 sub esc_url {
 586         my $str = shift;
 587         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 588         $str =~ s/\+/%2B/g;
 589         $str =~ s/ /\+/g;
 590         return $str;
 591 }
 592
 593 # replace invalid utf8 character with SUBSTITUTION sequence
 594 sub esc_html ($;%) {
 595         my $str = shift;
 596         my %opts = @_;
 597
 598         $str = decode_utf8($str);
 599         $str = $cgi->escapeHTML($str);
 600         if ($opts{'-nbsp'}) {
 601                 $str =~ s/ /&nbsp;/g;
 602         }
 603         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 604         return $str;
 605 }
 606
 607 # quote control characters and escape filename to HTML
 608 sub esc_path {
 609         my $str = shift;
 610         my %opts = @_;
 611
 612         $str = decode_utf8($str);
 613         $str = $cgi->escapeHTML($str);
 614         if ($opts{'-nbsp'}) {
 615                 $str =~ s/ /&nbsp;/g;
 616         }
 617         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 618         return $str;
 619 }
 620
 621 # Make control characters "printable", using character escape codes (CEC)
 622 sub quot_cec {
 623         my $cntrl = shift;
 624         my %es = ( # character escape codes, aka escape sequences
 625                    "\t" => '\t',   # tab            (HT)
 626                    "\n" => '\n',   # line feed      (LF)
 627                    "\r" => '\r',   # carrige return (CR)
 628                    "\f" => '\f',   # form feed      (FF)
 629                    "\b" => '\b',   # backspace      (BS)
 630                    "\a" => '\a',   # alarm (bell)   (BEL)
 631                    "\e" => '\e',   # escape         (ESC)
 632                    "\013" => '\v', # vertical tab   (VT)
 633                    "\000" => '\0', # nul character  (NUL)
 634                    );
 635         my $chr = ( (exists $es{$cntrl})
 636                     ? $es{$cntrl}
 637                     : sprintf('\%03o', ord($cntrl)) );
 638         return "<span class=\"cntrl\">$chr</span>";
 639 }
 640
 641 # Alternatively use unicode control pictures codepoints,
 642 # Unicode "printable representation" (PR)
 643 sub quot_upr {
 644         my $cntrl = shift;
 645         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 646         return "<span class=\"cntrl\">$chr</span>";
 647 }
 648
 649 # git may return quoted and escaped filenames
 650 sub unquote {
 651         my $str = shift;
 652
 653         sub unq {
 654                 my $seq = shift;
 655                 my %es = ( # character escape codes, aka escape sequences
 656                         't' => "\t",   # tab            (HT, TAB)
 657                         'n' => "\n",   # newline        (NL)
 658                         'r' => "\r",   # return         (CR)
 659                         'f' => "\f",   # form feed      (FF)
 660                         'b' => "\b",   # backspace      (BS)
 661                         'a' => "\a",   # alarm (bell)   (BEL)
 662                         'e' => "\e",   # escape         (ESC)
 663                         'v' => "\013", # vertical tab   (VT)
 664                 );
 665
 666                 if ($seq =~ m/^[0-7]{1,3}$/) {
 667                         # octal char sequence
 668                         return chr(oct($seq));
 669                 } elsif (exists $es{$seq}) {
 670                         # C escape sequence, aka character escape code
 671                         return $es{$seq}
 672                 }
 673                 # quoted ordinary character
 674                 return $seq;
 675         }
 676
 677         if ($str =~ m/^"(.*)"$/) {
 678                 # needs unquoting
 679                 $str = $1;
 680                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 681         }
 682         return $str;
 683 }
 684
 685 # escape tabs (convert tabs to spaces)
 686 sub untabify {
 687         my $line = shift;
 688
 689         while ((my $pos = index($line, "\t")) != -1) {
 690                 if (my $count = (8 - ($pos % 8))) {
 691                         my $spaces = ' ' x $count;
 692                         $line =~ s/\t/$spaces/;
 693                 }
 694         }
 695
 696         return $line;
 697 }
 698
 699 sub project_in_list {
 700         my $project = shift;
 701         my @list = git_get_projects_list();
 702         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 703 }
 704
 705 ## ----------------------------------------------------------------------
 706 ## HTML aware string manipulation
 707
 708 sub chop_str {
 709         my $str = shift;
 710         my $len = shift;
 711         my $add_len = shift || 10;
 712
 713         # allow only $len chars, but don't cut a word if it would fit in $add_len
 714         # if it doesn't fit, cut it if it's still longer than the dots we would add
 715         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 716         my $body = $1;
 717         my $tail = $2;
 718         if (length($tail) > 4) {
 719                 $tail = " ...";
 720                 $body =~ s/&[^;]*$//; # remove chopped character entities
 721         }
 722         return "$body$tail";
 723 }
 724
 725 ## ----------------------------------------------------------------------
 726 ## functions returning short strings
 727
 728 # CSS class for given age value (in seconds)
 729 sub age_class {
 730         my $age = shift;
 731
 732         if (!defined $age) {
 733                 return "noage";
 734         } elsif ($age < 60*60*2) {
 735                 return "age0";
 736         } elsif ($age < 60*60*24*2) {
 737                 return "age1";
 738         } else {
 739                 return "age2";
 740         }
 741 }
 742
 743 # convert age in seconds to "nn units ago" string
 744 sub age_string {
 745         my $age = shift;
 746         my $age_str;
 747
 748         if ($age > 60*60*24*365*2) {
 749                 $age_str = (int $age/60/60/24/365);
 750                 $age_str .= " years ago";
 751         } elsif ($age > 60*60*24*(365/12)*2) {
 752                 $age_str = int $age/60/60/24/(365/12);
 753                 $age_str .= " months ago";
 754         } elsif ($age > 60*60*24*7*2) {
 755                 $age_str = int $age/60/60/24/7;
 756                 $age_str .= " weeks ago";
 757         } elsif ($age > 60*60*24*2) {
 758                 $age_str = int $age/60/60/24;
 759                 $age_str .= " days ago";
 760         } elsif ($age > 60*60*2) {
 761                 $age_str = int $age/60/60;
 762                 $age_str .= " hours ago";
 763         } elsif ($age > 60*2) {
 764                 $age_str = int $age/60;
 765                 $age_str .= " min ago";
 766         } elsif ($age > 2) {
 767                 $age_str = int $age;
 768                 $age_str .= " sec ago";
 769         } else {
 770                 $age_str .= " right now";
 771         }
 772         return $age_str;
 773 }
 774
 775 # convert file mode in octal to symbolic file mode string
 776 sub mode_str {
 777         my $mode = oct shift;
 778
 779         if (S_ISDIR($mode & S_IFMT)) {
 780                 return 'drwxr-xr-x';
 781         } elsif (S_ISLNK($mode)) {
 782                 return 'lrwxrwxrwx';
 783         } elsif (S_ISREG($mode)) {
 784                 # git cares only about the executable bit
 785                 if ($mode & S_IXUSR) {
 786                         return '-rwxr-xr-x';
 787                 } else {
 788                         return '-rw-r--r--';
 789                 };
 790         } else {
 791                 return '----------';
 792         }
 793 }
 794
 795 # convert file mode in octal to file type string
 796 sub file_type {
 797         my $mode = shift;
 798
 799         if ($mode !~ m/^[0-7]+$/) {
 800                 return $mode;
 801         } else {
 802                 $mode = oct $mode;
 803         }
 804
 805         if (S_ISDIR($mode & S_IFMT)) {
 806                 return "directory";
 807         } elsif (S_ISLNK($mode)) {
 808                 return "symlink";
 809         } elsif (S_ISREG($mode)) {
 810                 return "file";
 811         } else {
 812                 return "unknown";
 813         }
 814 }
 815
 816 # convert file mode in octal to file type description string
 817 sub file_type_long {
 818         my $mode = shift;
 819
 820         if ($mode !~ m/^[0-7]+$/) {
 821                 return $mode;
 822         } else {
 823                 $mode = oct $mode;
 824         }
 825
 826         if (S_ISDIR($mode & S_IFMT)) {
 827                 return "directory";
 828         } elsif (S_ISLNK($mode)) {
 829                 return "symlink";
 830         } elsif (S_ISREG($mode)) {
 831                 if ($mode & S_IXUSR) {
 832                         return "executable";
 833                 } else {
 834                         return "file";
 835                 };
 836         } else {
 837                 return "unknown";
 838         }
 839 }
 840
 841
 842 ## ----------------------------------------------------------------------
 843 ## functions returning short HTML fragments, or transforming HTML fragments
 844 ## which don't belong to other sections
 845
 846 # format line of commit message.
 847 sub format_log_line_html {
 848         my $line = shift;
 849
 850         $line = esc_html($line, -nbsp=>1);
 851         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 852                 my $hash_text = $1;
 853                 my $link =
 854                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 855                                 -class => "text"}, $hash_text);
 856                 $line =~ s/$hash_text/$link/;
 857         }
 858         return $line;
 859 }
 860
 861 # format marker of refs pointing to given object
 862 sub format_ref_marker {
 863         my ($refs, $id) = @_;
 864         my $markers = '';
 865
 866         if (defined $refs->{$id}) {
 867                 foreach my $ref (@{$refs->{$id}}) {
 868                         my ($type, $name) = qw();
 869                         # e.g. tags/v2.6.11 or heads/next
 870                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 871                                 $type = $1;
 872                                 $name = $2;
 873                         } else {
 874                                 $type = "ref";
 875                                 $name = $ref;
 876                         }
 877
 878                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 879                                     esc_html($name) . "</span>";
 880                 }
 881         }
 882
 883         if ($markers) {
 884                 return ' <span class="refs">'. $markers . '</span>';
 885         } else {
 886                 return "";
 887         }
 888 }
 889
 890 # format, perhaps shortened and with markers, title line
 891 sub format_subject_html {
 892         my ($long, $short, $href, $extra) = @_;
 893         $extra = '' unless defined($extra);
 894
 895         if (length($short) < length($long)) {
 896                 return $cgi->a({-href => $href, -class => "list subject",
 897                                 -title => decode_utf8($long)},
 898                        esc_html($short) . $extra);
 899         } else {
 900                 return $cgi->a({-href => $href, -class => "list subject"},
 901                        esc_html($long)  . $extra);
 902         }
 903 }
 904
 905 # format patch (diff) line (rather not to be used for diff headers)
 906 sub format_diff_line {
 907         my $line = shift;
 908         my ($from, $to) = @_;
 909         my $diff_class = "";
 910
 911         chomp $line;
 912
 913         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 914                 # combined diff
 915                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 916                 if ($line =~ m/^\@{3}/) {
 917                         $diff_class = " chunk_header";
 918                 } elsif ($line =~ m/^\\/) {
 919                         $diff_class = " incomplete";
 920                 } elsif ($prefix =~ tr/+/+/) {
 921                         $diff_class = " add";
 922                 } elsif ($prefix =~ tr/-/-/) {
 923                         $diff_class = " rem";
 924                 }
 925         } else {
 926                 # assume ordinary diff
 927                 my $char = substr($line, 0, 1);
 928                 if ($char eq '+') {
 929                         $diff_class = " add";
 930                 } elsif ($char eq '-') {
 931                         $diff_class = " rem";
 932                 } elsif ($char eq '@') {
 933                         $diff_class = " chunk_header";
 934                 } elsif ($char eq "\\") {
 935                         $diff_class = " incomplete";
 936                 }
 937         }
 938         $line = untabify($line);
 939         if ($from && $to && $line =~ m/^\@{2} /) {
 940                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 941                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 942
 943                 $from_lines = 0 unless defined $from_lines;
 944                 $to_lines   = 0 unless defined $to_lines;
 945
 946                 if ($from->{'href'}) {
 947                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 948                                              -class=>"list"}, $from_text);
 949                 }
 950                 if ($to->{'href'}) {
 951                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 952                                              -class=>"list"}, $to_text);
 953                 }
 954                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 955                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 956                 return "<div class=\"diff$diff_class\">$line</div>\n";
 957         } elsif ($from && $to && $line =~ m/^\@{3}/) {
 958                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 959                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 960
 961                 @from_text = split(' ', $ranges);
 962                 for (my $i = 0; $i < @from_text; ++$i) {
 963                         ($from_start[$i], $from_nlines[$i]) =
 964                                 (split(',', substr($from_text[$i], 1)), 0);
 965                 }
 966
 967                 $to_text   = pop @from_text;
 968                 $to_start  = pop @from_start;
 969                 $to_nlines = pop @from_nlines;
 970
 971                 $line = "<span class=\"chunk_info\">$prefix ";
 972                 for (my $i = 0; $i < @from_text; ++$i) {
 973                         if ($from->{'href'}[$i]) {
 974                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 975                                                   -class=>"list"}, $from_text[$i]);
 976                         } else {
 977                                 $line .= $from_text[$i];
 978                         }
 979                         $line .= " ";
 980                 }
 981                 if ($to->{'href'}) {
 982                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 983                                           -class=>"list"}, $to_text);
 984                 } else {
 985                         $line .= $to_text;
 986                 }
 987                 $line .= " $prefix</span>" .
 988                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 989                 return "<div class=\"diff$diff_class\">$line</div>\n";
 990         }
 991         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 992 }
 993
 994 ## ----------------------------------------------------------------------
 995 ## git utility subroutines, invoking git commands
 996
 997 # returns path to the core git executable and the --git-dir parameter as list
 998 sub git_cmd {
 999         return $GIT, '--git-dir='.$git_dir;
1000 }
1001
1002 # returns path to the core git executable and the --git-dir parameter as string
1003 sub git_cmd_str {
1004         return join(' ', git_cmd());
1005 }
1006
1007 # get HEAD ref of given project as hash
1008 sub git_get_head_hash {
1009         my $project = shift;
1010         my $o_git_dir = $git_dir;
1011         my $retval = undef;
1012         $git_dir = "$projectroot/$project";
1013         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1014                 my $head = <$fd>;
1015                 close $fd;
1016                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1017                         $retval = $1;
1018                 }
1019         }
1020         if (defined $o_git_dir) {
1021                 $git_dir = $o_git_dir;
1022         }
1023         return $retval;
1024 }
1025
1026 # get type of given object
1027 sub git_get_type {
1028         my $hash = shift;
1029
1030         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1031         my $type = <$fd>;
1032         close $fd or return;
1033         chomp $type;
1034         return $type;
1035 }
1036
1037 sub git_get_project_config {
1038         my ($key, $type) = @_;
1039
1040         return unless ($key);
1041         $key =~ s/^gitweb\.//;
1042         return if ($key =~ m/\W/);
1043
1044         my @x = (git_cmd(), 'config');
1045         if (defined $type) { push @x, $type; }
1046         push @x, "--get";
1047         push @x, "gitweb.$key";
1048         my $val = qx(@x);
1049         chomp $val;
1050         return ($val);
1051 }
1052
1053 # get hash of given path at given ref
1054 sub git_get_hash_by_path {
1055         my $base = shift;
1056         my $path = shift || return undef;
1057         my $type = shift;
1058
1059         $path =~ s,/+$,,;
1060
1061         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1062                 or die_error(undef, "Open git-ls-tree failed");
1063         my $line = <$fd>;
1064         close $fd or return undef;
1065
1066         if (!defined $line) {
1067                 # there is no tree or hash given by $path at $base
1068                 return undef;
1069         }
1070
1071         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1072         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1073         if (defined $type && $type ne $2) {
1074                 # type doesn't match
1075                 return undef;
1076         }
1077         return $3;
1078 }
1079
1080 # get path of entry with given hash at given tree-ish (ref)
1081 # used to get 'from' filename for combined diff (merge commit) for renames
1082 sub git_get_path_by_hash {
1083         my $base = shift || return;
1084         my $hash = shift || return;
1085
1086         local $/ = "\0";
1087
1088         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1089                 or return undef;
1090         while (my $line = <$fd>) {
1091                 chomp $line;
1092
1093                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1094                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1095                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1096                         close $fd;
1097                         return $1;
1098                 }
1099         }
1100         close $fd;
1101         return undef;
1102 }
1103
1104 ## ......................................................................
1105 ## git utility functions, directly accessing git repository
1106
1107 sub git_get_project_description {
1108         my $path = shift;
1109
1110         open my $fd, "$projectroot/$path/description" or return undef;
1111         my $descr = <$fd>;
1112         close $fd;
1113         chomp $descr;
1114         return $descr;
1115 }
1116
1117 sub git_get_project_url_list {
1118         my $path = shift;
1119
1120         open my $fd, "$projectroot/$path/cloneurl" or return;
1121         my @git_project_url_list = map { chomp; $_ } <$fd>;
1122         close $fd;
1123
1124         return wantarray ? @git_project_url_list : \@git_project_url_list;
1125 }
1126
1127 sub git_get_projects_list {
1128         my ($filter) = @_;
1129         my @list;
1130
1131         $filter ||= '';
1132         $filter =~ s/\.git$//;
1133
1134         my ($check_forks) = gitweb_check_feature('forks');
1135
1136         if (-d $projects_list) {
1137                 # search in directory
1138                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1139                 # remove the trailing "/"
1140                 $dir =~ s!/+$!!;
1141                 my $pfxlen = length("$dir");
1142
1143                 File::Find::find({
1144                         follow_fast => 1, # follow symbolic links
1145                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1146                         wanted => sub {
1147                                 # skip project-list toplevel, if we get it.
1148                                 return if (m!^[/.]$!);
1149                                 # only directories can be git repositories
1150                                 return unless (-d $_);
1151
1152                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1153                                 # we check related file in $projectroot
1154                                 if ($check_forks and $subdir =~ m#/.#) {
1155                                         $File::Find::prune = 1;
1156                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1157                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1158                                         $File::Find::prune = 1;
1159                                 }
1160                         },
1161                 }, "$dir");
1162
1163         } elsif (-f $projects_list) {
1164                 # read from file(url-encoded):
1165                 # 'git%2Fgit.git Linus+Torvalds'
1166                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1167                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1168                 my %paths;
1169                 open my ($fd), $projects_list or return;
1170         PROJECT:
1171                 while (my $line = <$fd>) {
1172                         chomp $line;
1173                         my ($path, $owner) = split ' ', $line;
1174                         $path = unescape($path);
1175                         $owner = unescape($owner);
1176                         if (!defined $path) {
1177                                 next;
1178                         }
1179                         if ($filter ne '') {
1180                                 # looking for forks;
1181                                 my $pfx = substr($path, 0, length($filter));
1182                                 if ($pfx ne $filter) {
1183                                         next PROJECT;
1184                                 }
1185                                 my $sfx = substr($path, length($filter));
1186                                 if ($sfx !~ /^\/.*\.git$/) {
1187                                         next PROJECT;
1188                                 }
1189                         } elsif ($check_forks) {
1190                         PATH:
1191                                 foreach my $filter (keys %paths) {
1192                                         # looking for forks;
1193                                         my $pfx = substr($path, 0, length($filter));
1194                                         if ($pfx ne $filter) {
1195                                                 next PATH;
1196                                         }
1197                                         my $sfx = substr($path, length($filter));
1198                                         if ($sfx !~ /^\/.*\.git$/) {
1199                                                 next PATH;
1200                                         }
1201                                         # is a fork, don't include it in
1202                                         # the list
1203                                         next PROJECT;
1204                                 }
1205                         }
1206                         if (check_export_ok("$projectroot/$path")) {
1207                                 my $pr = {
1208                                         path => $path,
1209                                         owner => decode_utf8($owner),
1210                                 };
1211                                 push @list, $pr;
1212                                 (my $forks_path = $path) =~ s/\.git$//;
1213                                 $paths{$forks_path}++;
1214                         }
1215                 }
1216                 close $fd;
1217         }
1218         return @list;
1219 }
1220
1221 sub git_get_project_owner {
1222         my $project = shift;
1223         my $owner;
1224
1225         return undef unless $project;
1226
1227         # read from file (url-encoded):
1228         # 'git%2Fgit.git Linus+Torvalds'
1229         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1230         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1231         if (-f $projects_list) {
1232                 open (my $fd , $projects_list);
1233                 while (my $line = <$fd>) {
1234                         chomp $line;
1235                         my ($pr, $ow) = split ' ', $line;
1236                         $pr = unescape($pr);
1237                         $ow = unescape($ow);
1238                         if ($pr eq $project) {
1239                                 $owner = decode_utf8($ow);
1240                                 last;
1241                         }
1242                 }
1243                 close $fd;
1244         }
1245         if (!defined $owner) {
1246                 $owner = get_file_owner("$projectroot/$project");
1247         }
1248
1249         return $owner;
1250 }
1251
1252 sub git_get_last_activity {
1253         my ($path) = @_;
1254         my $fd;
1255
1256         $git_dir = "$projectroot/$path";
1257         open($fd, "-|", git_cmd(), 'for-each-ref',
1258              '--format=%(committer)',
1259              '--sort=-committerdate',
1260              '--count=1',
1261              'refs/heads') or return;
1262         my $most_recent = <$fd>;
1263         close $fd or return;
1264         if (defined $most_recent &&
1265             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1266                 my $timestamp = $1;
1267                 my $age = time - $timestamp;
1268                 return ($age, age_string($age));
1269         }
1270 }
1271
1272 sub git_get_references {
1273         my $type = shift || "";
1274         my %refs;
1275         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1276         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1277         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1278                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1279                 or return;
1280
1281         while (my $line = <$fd>) {
1282                 chomp $line;
1283                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1284                         if (defined $refs{$1}) {
1285                                 push @{$refs{$1}}, $2;
1286                         } else {
1287                                 $refs{$1} = [ $2 ];
1288                         }
1289                 }
1290         }
1291         close $fd or return;
1292         return \%refs;
1293 }
1294
1295 sub git_get_rev_name_tags {
1296         my $hash = shift || return undef;
1297
1298         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1299                 or return;
1300         my $name_rev = <$fd>;
1301         close $fd;
1302
1303         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1304                 return $1;
1305         } else {
1306                 # catches also '$hash undefined' output
1307                 return undef;
1308         }
1309 }
1310
1311 ## ----------------------------------------------------------------------
1312 ## parse to hash functions
1313
1314 sub parse_date {
1315         my $epoch = shift;
1316         my $tz = shift || "-0000";
1317
1318         my %date;
1319         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1320         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1321         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1322         $date{'hour'} = $hour;
1323         $date{'minute'} = $min;
1324         $date{'mday'} = $mday;
1325         $date{'day'} = $days[$wday];
1326         $date{'month'} = $months[$mon];
1327         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1328                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1329         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1330                              $mday, $months[$mon], $hour ,$min;
1331         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1332                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1333
1334         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1335         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1336         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1337         $date{'hour_local'} = $hour;
1338         $date{'minute_local'} = $min;
1339         $date{'tz_local'} = $tz;
1340         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1341                                   1900+$year, $mon+1, $mday,
1342                                   $hour, $min, $sec, $tz);
1343         return %date;
1344 }
1345
1346 sub parse_tag {
1347         my $tag_id = shift;
1348         my %tag;
1349         my @comment;
1350
1351         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1352         $tag{'id'} = $tag_id;
1353         while (my $line = <$fd>) {
1354                 chomp $line;
1355                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1356                         $tag{'object'} = $1;
1357                 } elsif ($line =~ m/^type (.+)$/) {
1358                         $tag{'type'} = $1;
1359                 } elsif ($line =~ m/^tag (.+)$/) {
1360                         $tag{'name'} = $1;
1361                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1362                         $tag{'author'} = $1;
1363                         $tag{'epoch'} = $2;
1364                         $tag{'tz'} = $3;
1365                 } elsif ($line =~ m/--BEGIN/) {
1366                         push @comment, $line;
1367                         last;
1368                 } elsif ($line eq "") {
1369                         last;
1370                 }
1371         }
1372         push @comment, <$fd>;
1373         $tag{'comment'} = \@comment;
1374         close $fd or return;
1375         if (!defined $tag{'name'}) {
1376                 return
1377         };
1378         return %tag
1379 }
1380
1381 sub parse_commit_text {
1382         my ($commit_text, $withparents) = @_;
1383         my @commit_lines = split '\n', $commit_text;
1384         my %co;
1385
1386         pop @commit_lines; # Remove '\0'
1387
1388         if (! @commit_lines) {
1389                 return;
1390         }
1391
1392         my $header = shift @commit_lines;
1393         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1394                 return;
1395         }
1396         ($co{'id'}, my @parents) = split ' ', $header;
1397         while (my $line = shift @commit_lines) {
1398                 last if $line eq "\n";
1399                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1400                         $co{'tree'} = $1;
1401                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1402                         push @parents, $1;
1403                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1404                         $co{'author'} = $1;
1405                         $co{'author_epoch'} = $2;
1406                         $co{'author_tz'} = $3;
1407                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1408                                 $co{'author_name'}  = $1;
1409                                 $co{'author_email'} = $2;
1410                         } else {
1411                                 $co{'author_name'} = $co{'author'};
1412                         }
1413                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1414                         $co{'committer'} = $1;
1415                         $co{'committer_epoch'} = $2;
1416                         $co{'committer_tz'} = $3;
1417                         $co{'committer_name'} = $co{'committer'};
1418                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1419                                 $co{'committer_name'}  = $1;
1420                                 $co{'committer_email'} = $2;
1421                         } else {
1422                                 $co{'committer_name'} = $co{'committer'};
1423                         }
1424                 }
1425         }
1426         if (!defined $co{'tree'}) {
1427                 return;
1428         };
1429         $co{'parents'} = \@parents;
1430         $co{'parent'} = $parents[0];
1431
1432         foreach my $title (@commit_lines) {
1433                 $title =~ s/^    //;
1434                 if ($title ne "") {
1435                         $co{'title'} = chop_str($title, 80, 5);
1436                         # remove leading stuff of merges to make the interesting part visible
1437                         if (length($title) > 50) {
1438                                 $title =~ s/^Automatic //;
1439                                 $title =~ s/^merge (of|with) /Merge ... /i;
1440                                 if (length($title) > 50) {
1441                                         $title =~ s/(http|rsync):\/\///;
1442                                 }
1443                                 if (length($title) > 50) {
1444                                         $title =~ s/(master|www|rsync)\.//;
1445                                 }
1446                                 if (length($title) > 50) {
1447                                         $title =~ s/kernel.org:?//;
1448                                 }
1449                                 if (length($title) > 50) {
1450                                         $title =~ s/\/pub\/scm//;
1451                                 }
1452                         }
1453                         $co{'title_short'} = chop_str($title, 50, 5);
1454                         last;
1455                 }
1456         }
1457         if ($co{'title'} eq "") {
1458                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1459         }
1460         # remove added spaces
1461         foreach my $line (@commit_lines) {
1462                 $line =~ s/^    //;
1463         }
1464         $co{'comment'} = \@commit_lines;
1465
1466         my $age = time - $co{'committer_epoch'};
1467         $co{'age'} = $age;
1468         $co{'age_string'} = age_string($age);
1469         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1470         if ($age > 60*60*24*7*2) {
1471                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1472                 $co{'age_string_age'} = $co{'age_string'};
1473         } else {
1474                 $co{'age_string_date'} = $co{'age_string'};
1475                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1476         }
1477         return %co;
1478 }
1479
1480 sub parse_commit {
1481         my ($commit_id) = @_;
1482         my %co;
1483
1484         local $/ = "\0";
1485
1486         open my $fd, "-|", git_cmd(), "rev-list",
1487                 "--parents",
1488                 "--header",
1489                 "--max-count=1",
1490                 $commit_id,
1491                 "--",
1492                 or die_error(undef, "Open git-rev-list failed");
1493         %co = parse_commit_text(<$fd>, 1);
1494         close $fd;
1495
1496         return %co;
1497 }
1498
1499 sub parse_commits {
1500         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1501         my @cos;
1502
1503         $maxcount ||= 1;
1504         $skip ||= 0;
1505
1506         local $/ = "\0";
1507
1508         open my $fd, "-|", git_cmd(), "rev-list",
1509                 "--header",
1510                 ($arg ? ($arg) : ()),
1511                 ("--max-count=" . $maxcount),
1512                 ("--skip=" . $skip),
1513                 $commit_id,
1514                 "--",
1515                 ($filename ? ($filename) : ())
1516                 or die_error(undef, "Open git-rev-list failed");
1517         while (my $line = <$fd>) {
1518                 my %co = parse_commit_text($line);
1519                 push @cos, \%co;
1520         }
1521         close $fd;
1522
1523         return wantarray ? @cos : \@cos;
1524 }
1525
1526 # parse ref from ref_file, given by ref_id, with given type
1527 sub parse_ref {
1528         my $ref_file = shift;
1529         my $ref_id = shift;
1530         my $type = shift || git_get_type($ref_id);
1531         my %ref_item;
1532
1533         $ref_item{'type'} = $type;
1534         $ref_item{'id'} = $ref_id;
1535         $ref_item{'epoch'} = 0;
1536         $ref_item{'age'} = "unknown";
1537         if ($type eq "tag") {
1538                 my %tag = parse_tag($ref_id);
1539                 $ref_item{'comment'} = $tag{'comment'};
1540                 if ($tag{'type'} eq "commit") {
1541                         my %co = parse_commit($tag{'object'});
1542                         $ref_item{'epoch'} = $co{'committer_epoch'};
1543                         $ref_item{'age'} = $co{'age_string'};
1544                 } elsif (defined($tag{'epoch'})) {
1545                         my $age = time - $tag{'epoch'};
1546                         $ref_item{'epoch'} = $tag{'epoch'};
1547                         $ref_item{'age'} = age_string($age);
1548                 }
1549                 $ref_item{'reftype'} = $tag{'type'};
1550                 $ref_item{'name'} = $tag{'name'};
1551                 $ref_item{'refid'} = $tag{'object'};
1552         } elsif ($type eq "commit"){
1553                 my %co = parse_commit($ref_id);
1554                 $ref_item{'reftype'} = "commit";
1555                 $ref_item{'name'} = $ref_file;
1556                 $ref_item{'title'} = $co{'title'};
1557                 $ref_item{'refid'} = $ref_id;
1558                 $ref_item{'epoch'} = $co{'committer_epoch'};
1559                 $ref_item{'age'} = $co{'age_string'};
1560         } else {
1561                 $ref_item{'reftype'} = $type;
1562                 $ref_item{'name'} = $ref_file;
1563                 $ref_item{'refid'} = $ref_id;
1564         }
1565
1566         return %ref_item;
1567 }
1568
1569 # parse line of git-diff-tree "raw" output
1570 sub parse_difftree_raw_line {
1571         my $line = shift;
1572         my %res;
1573
1574         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1575         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1576         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1577                 $res{'from_mode'} = $1;
1578                 $res{'to_mode'} = $2;
1579                 $res{'from_id'} = $3;
1580                 $res{'to_id'} = $4;
1581                 $res{'status'} = $5;
1582                 $res{'similarity'} = $6;
1583                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1584                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1585                 } else {
1586                         $res{'file'} = unquote($7);
1587                 }
1588         }
1589         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1590         # combined diff (for merge commit)
1591         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1592                 $res{'nparents'}  = length($1);
1593                 $res{'from_mode'} = [ split(' ', $2) ];
1594                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1595                 $res{'from_id'} = [ split(' ', $3) ];
1596                 $res{'to_id'} = pop @{$res{'from_id'}};
1597                 $res{'status'} = [ split('', $4) ];
1598                 $res{'to_file'} = unquote($5);
1599         }
1600         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1601         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1602                 $res{'commit'} = $1;
1603         }
1604
1605         return wantarray ? %res : \%res;
1606 }
1607
1608 # parse line of git-ls-tree output
1609 sub parse_ls_tree_line ($;%) {
1610         my $line = shift;
1611         my %opts = @_;
1612         my %res;
1613
1614         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1615         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1616
1617         $res{'mode'} = $1;
1618         $res{'type'} = $2;
1619         $res{'hash'} = $3;
1620         if ($opts{'-z'}) {
1621                 $res{'name'} = $4;
1622         } else {
1623                 $res{'name'} = unquote($4);
1624         }
1625
1626         return wantarray ? %res : \%res;
1627 }
1628
1629 ## ......................................................................
1630 ## parse to array of hashes functions
1631
1632 sub git_get_heads_list {
1633         my $limit = shift;
1634         my @headslist;
1635
1636         open my $fd, '-|', git_cmd(), 'for-each-ref',
1637                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1638                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1639                 'refs/heads'
1640                 or return;
1641         while (my $line = <$fd>) {
1642                 my %ref_item;
1643
1644                 chomp $line;
1645                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1646                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1647                 my ($committer, $epoch, $tz) =
1648                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1649                 $name =~ s!^refs/heads/!!;
1650
1651                 $ref_item{'name'}  = $name;
1652                 $ref_item{'id'}    = $hash;
1653                 $ref_item{'title'} = $title || '(no commit message)';
1654                 $ref_item{'epoch'} = $epoch;
1655                 if ($epoch) {
1656                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1657                 } else {
1658                         $ref_item{'age'} = "unknown";
1659                 }
1660
1661                 push @headslist, \%ref_item;
1662         }
1663         close $fd;
1664
1665         return wantarray ? @headslist : \@headslist;
1666 }
1667
1668 sub git_get_tags_list {
1669         my $limit = shift;
1670         my @tagslist;
1671
1672         open my $fd, '-|', git_cmd(), 'for-each-ref',
1673                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1674                 '--format=%(objectname) %(objecttype) %(refname) '.
1675                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1676                 'refs/tags'
1677                 or return;
1678         while (my $line = <$fd>) {
1679                 my %ref_item;
1680
1681                 chomp $line;
1682                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1683                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1684                 my ($creator, $epoch, $tz) =
1685                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1686                 $name =~ s!^refs/tags/!!;
1687
1688                 $ref_item{'type'} = $type;
1689                 $ref_item{'id'} = $id;
1690                 $ref_item{'name'} = $name;
1691                 if ($type eq "tag") {
1692                         $ref_item{'subject'} = $title;
1693                         $ref_item{'reftype'} = $reftype;
1694                         $ref_item{'refid'}   = $refid;
1695                 } else {
1696                         $ref_item{'reftype'} = $type;
1697                         $ref_item{'refid'}   = $id;
1698                 }
1699
1700                 if ($type eq "tag" || $type eq "commit") {
1701                         $ref_item{'epoch'} = $epoch;
1702                         if ($epoch) {
1703                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1704                         } else {
1705                                 $ref_item{'age'} = "unknown";
1706                         }
1707                 }
1708
1709                 push @tagslist, \%ref_item;
1710         }
1711         close $fd;
1712
1713         return wantarray ? @tagslist : \@tagslist;
1714 }
1715
1716 ## ----------------------------------------------------------------------
1717 ## filesystem-related functions
1718
1719 sub get_file_owner {
1720         my $path = shift;
1721
1722         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1723         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1724         if (!defined $gcos) {
1725                 return undef;
1726         }
1727         my $owner = $gcos;
1728         $owner =~ s/[,;].*$//;
1729         return decode_utf8($owner);
1730 }
1731
1732 ## ......................................................................
1733 ## mimetype related functions
1734
1735 sub mimetype_guess_file {
1736         my $filename = shift;
1737         my $mimemap = shift;
1738         -r $mimemap or return undef;
1739
1740         my %mimemap;
1741         open(MIME, $mimemap) or return undef;
1742         while (<MIME>) {
1743                 next if m/^#/; # skip comments
1744                 my ($mime, $exts) = split(/\t+/);
1745                 if (defined $exts) {
1746                         my @exts = split(/\s+/, $exts);
1747                         foreach my $ext (@exts) {
1748                                 $mimemap{$ext} = $mime;
1749                         }
1750                 }
1751         }
1752         close(MIME);
1753
1754         $filename =~ /\.([^.]*)$/;
1755         return $mimemap{$1};
1756 }
1757
1758 sub mimetype_guess {
1759         my $filename = shift;
1760         my $mime;
1761         $filename =~ /\./ or return undef;
1762
1763         if ($mimetypes_file) {
1764                 my $file = $mimetypes_file;
1765                 if ($file !~ m!^/!) { # if it is relative path
1766                         # it is relative to project
1767                         $file = "$projectroot/$project/$file";
1768                 }
1769                 $mime = mimetype_guess_file($filename, $file);
1770         }
1771         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1772         return $mime;
1773 }
1774
1775 sub blob_mimetype {
1776         my $fd = shift;
1777         my $filename = shift;
1778
1779         if ($filename) {
1780                 my $mime = mimetype_guess($filename);
1781                 $mime and return $mime;
1782         }
1783
1784         # just in case
1785         return $default_blob_plain_mimetype unless $fd;
1786
1787         if (-T $fd) {
1788                 return 'text/plain' .
1789                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1790         } elsif (! $filename) {
1791                 return 'application/octet-stream';
1792         } elsif ($filename =~ m/\.png$/i) {
1793                 return 'image/png';
1794         } elsif ($filename =~ m/\.gif$/i) {
1795                 return 'image/gif';
1796         } elsif ($filename =~ m/\.jpe?g$/i) {
1797                 return 'image/jpeg';
1798         } else {
1799                 return 'application/octet-stream';
1800         }
1801 }
1802
1803 ## ======================================================================
1804 ## functions printing HTML: header, footer, error page
1805
1806 sub git_header_html {
1807         my $status = shift || "200 OK";
1808         my $expires = shift;
1809
1810         my $title = "$site_name";
1811         if (defined $project) {
1812                 $title .= " - " . decode_utf8($project);
1813                 if (defined $action) {
1814                         $title .= "/$action";
1815                         if (defined $file_name) {
1816                                 $title .= " - " . esc_path($file_name);
1817                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1818                                         $title .= "/";
1819                                 }
1820                         }
1821                 }
1822         }
1823         my $content_type;
1824         # require explicit support from the UA if we are to send the page as
1825         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1826         # we have to do this because MSIE sometimes globs '*/*', pretending to
1827         # support xhtml+xml but choking when it gets what it asked for.
1828         if (defined $cgi->http('HTTP_ACCEPT') &&
1829             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1830             $cgi->Accept('application/xhtml+xml') != 0) {
1831                 $content_type = 'application/xhtml+xml';
1832         } else {
1833                 $content_type = 'text/html';
1834         }
1835         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1836                            -status=> $status, -expires => $expires);
1837         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1838         print <<EOF;
1839 <?xml version="1.0" encoding="utf-8"?>
1840 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1841 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1842 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1843 <!-- git core binaries version $git_version -->
1844 <head>
1845 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1846 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1847 <meta name="robots" content="index, nofollow"/>
1848 <title>$title</title>
1849 EOF
1850 # print out each stylesheet that exist
1851         if (defined $stylesheet) {
1852 #provides backwards capability for those people who define style sheet in a config file
1853                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1854         } else {
1855                 foreach my $stylesheet (@stylesheets) {
1856                         next unless $stylesheet;
1857                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1858                 }
1859         }
1860         if (defined $project) {
1861                 printf('<link rel="alternate" title="%s log RSS feed" '.
1862                        'href="%s" type="application/rss+xml" />'."\n",
1863                        esc_param($project), href(action=>"rss"));
1864                 printf('<link rel="alternate" title="%s log Atom feed" '.
1865                        'href="%s" type="application/atom+xml" />'."\n",
1866                        esc_param($project), href(action=>"atom"));
1867         } else {
1868                 printf('<link rel="alternate" title="%s projects list" '.
1869                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1870                        $site_name, href(project=>undef, action=>"project_index"));
1871                 printf('<link rel="alternate" title="%s projects feeds" '.
1872                        'href="%s" type="text/x-opml"/>'."\n",
1873                        $site_name, href(project=>undef, action=>"opml"));
1874         }
1875         if (defined $favicon) {
1876                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1877         }
1878
1879         print "</head>\n" .
1880               "<body>\n";
1881
1882         if (-f $site_header) {
1883                 open (my $fd, $site_header);
1884                 print <$fd>;
1885                 close $fd;
1886         }
1887
1888         print "<div class=\"page_header\">\n" .
1889               $cgi->a({-href => esc_url($logo_url),
1890                        -title => $logo_label},
1891                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1892         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1893         if (defined $project) {
1894                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1895                 if (defined $action) {
1896                         print " / $action";
1897                 }
1898                 print "\n";
1899         }
1900         my ($have_search) = gitweb_check_feature('search');
1901         if ((defined $project) && ($have_search)) {
1902                 if (!defined $searchtext) {
1903                         $searchtext = "";
1904                 }
1905                 my $search_hash;
1906                 if (defined $hash_base) {
1907                         $search_hash = $hash_base;
1908                 } elsif (defined $hash) {
1909                         $search_hash = $hash;
1910                 } else {
1911                         $search_hash = "HEAD";
1912                 }
1913                 $cgi->param("a", "search");
1914                 $cgi->param("h", $search_hash);
1915                 $cgi->param("p", $project);
1916                 print $cgi->startform(-method => "get", -action => $my_uri) .
1917                       "<div class=\"search\">\n" .
1918                       $cgi->hidden(-name => "p") . "\n" .
1919                       $cgi->hidden(-name => "a") . "\n" .
1920                       $cgi->hidden(-name => "h") . "\n" .
1921                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1922                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1923                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1924                       " search:\n",
1925                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1926                       "</div>" .
1927                       $cgi->end_form() . "\n";
1928         }
1929         print "</div>\n";
1930 }
1931
1932 sub git_footer_html {
1933         print "<div class=\"page_footer\">\n";
1934         if (defined $project) {
1935                 my $descr = git_get_project_description($project);
1936                 if (defined $descr) {
1937                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1938                 }
1939                 print $cgi->a({-href => href(action=>"rss"),
1940                               -class => "rss_logo"}, "RSS") . " ";
1941                 print $cgi->a({-href => href(action=>"atom"),
1942                               -class => "rss_logo"}, "Atom") . "\n";
1943         } else {
1944                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1945                               -class => "rss_logo"}, "OPML") . " ";
1946                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1947                               -class => "rss_logo"}, "TXT") . "\n";
1948         }
1949         print "</div>\n" ;
1950
1951         if (-f $site_footer) {
1952                 open (my $fd, $site_footer);
1953                 print <$fd>;
1954                 close $fd;
1955         }
1956
1957         print "</body>\n" .
1958               "</html>";
1959 }
1960
1961 sub die_error {
1962         my $status = shift || "403 Forbidden";
1963         my $error = shift || "Malformed query, file missing or permission denied";
1964
1965         git_header_html($status);
1966         print <<EOF;
1967 <div class="page_body">
1968 <br /><br />
1969 $status - $error
1970 <br />
1971 </div>
1972 EOF
1973         git_footer_html();
1974         exit;
1975 }
1976
1977 ## ----------------------------------------------------------------------
1978 ## functions printing or outputting HTML: navigation
1979
1980 sub git_print_page_nav {
1981         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1982         $extra = '' if !defined $extra; # pager or formats
1983
1984         my @navs = qw(summary shortlog log commit commitdiff tree);
1985         if ($suppress) {
1986                 @navs = grep { $_ ne $suppress } @navs;
1987         }
1988
1989         my %arg = map { $_ => {action=>$_} } @navs;
1990         if (defined $head) {
1991                 for (qw(commit commitdiff)) {
1992                         $arg{$_}{'hash'} = $head;
1993                 }
1994                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1995                         for (qw(shortlog log)) {
1996                                 $arg{$_}{'hash'} = $head;
1997                         }
1998                 }
1999         }
2000         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2001         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2002
2003         print "<div class=\"page_nav\">\n" .
2004                 (join " | ",
2005                  map { $_ eq $current ?
2006                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2007                  } @navs);
2008         print "<br/>\n$extra<br/>\n" .
2009               "</div>\n";
2010 }
2011
2012 sub format_paging_nav {
2013         my ($action, $hash, $head, $page, $nrevs) = @_;
2014         my $paging_nav;
2015
2016
2017         if ($hash ne $head || $page) {
2018                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2019         } else {
2020                 $paging_nav .= "HEAD";
2021         }
2022
2023         if ($page > 0) {
2024                 $paging_nav .= " &sdot; " .
2025                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2026                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2027         } else {
2028                 $paging_nav .= " &sdot; prev";
2029         }
2030
2031         if ($nrevs >= (100 * ($page+1)-1)) {
2032                 $paging_nav .= " &sdot; " .
2033                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2034                                  -accesskey => "n", -title => "Alt-n"}, "next");
2035         } else {
2036                 $paging_nav .= " &sdot; next";
2037         }
2038
2039         return $paging_nav;
2040 }
2041
2042 ## ......................................................................
2043 ## functions printing or outputting HTML: div
2044
2045 sub git_print_header_div {
2046         my ($action, $title, $hash, $hash_base) = @_;
2047         my %args = ();
2048
2049         $args{'action'} = $action;
2050         $args{'hash'} = $hash if $hash;
2051         $args{'hash_base'} = $hash_base if $hash_base;
2052
2053         print "<div class=\"header\">\n" .
2054               $cgi->a({-href => href(%args), -class => "title"},
2055               $title ? $title : $action) .
2056               "\n</div>\n";
2057 }
2058
2059 #sub git_print_authorship (\%) {
2060 sub git_print_authorship {
2061         my $co = shift;
2062
2063         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2064         print "<div class=\"author_date\">" .
2065               esc_html($co->{'author_name'}) .
2066               " [$ad{'rfc2822'}";
2067         if ($ad{'hour_local'} < 6) {
2068                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2069                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2070         } else {
2071                 printf(" (%02d:%02d %s)",
2072                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2073         }
2074         print "]</div>\n";
2075 }
2076
2077 sub git_print_page_path {
2078         my $name = shift;
2079         my $type = shift;
2080         my $hb = shift;
2081
2082
2083         print "<div class=\"page_path\">";
2084         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2085                       -title => 'tree root'}, decode_utf8("[$project]"));
2086         print " / ";
2087         if (defined $name) {
2088                 my @dirname = split '/', $name;
2089                 my $basename = pop @dirname;
2090                 my $fullname = '';
2091
2092                 foreach my $dir (@dirname) {
2093                         $fullname .= ($fullname ? '/' : '') . $dir;
2094                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2095                                                      hash_base=>$hb),
2096                                       -title => $fullname}, esc_path($dir));
2097                         print " / ";
2098                 }
2099                 if (defined $type && $type eq 'blob') {
2100                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2101                                                      hash_base=>$hb),
2102                                       -title => $name}, esc_path($basename));
2103                 } elsif (defined $type && $type eq 'tree') {
2104                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2105                                                      hash_base=>$hb),
2106                                       -title => $name}, esc_path($basename));
2107                         print " / ";
2108                 } else {
2109                         print esc_path($basename);
2110                 }
2111         }
2112         print "<br/></div>\n";
2113 }
2114
2115 # sub git_print_log (\@;%) {
2116 sub git_print_log ($;%) {
2117         my $log = shift;
2118         my %opts = @_;
2119
2120         if ($opts{'-remove_title'}) {
2121                 # remove title, i.e. first line of log
2122                 shift @$log;
2123         }
2124         # remove leading empty lines
2125         while (defined $log->[0] && $log->[0] eq "") {
2126                 shift @$log;
2127         }
2128
2129         # print log
2130         my $signoff = 0;
2131         my $empty = 0;
2132         foreach my $line (@$log) {
2133                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2134                         $signoff = 1;
2135                         $empty = 0;
2136                         if (! $opts{'-remove_signoff'}) {
2137                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2138                                 next;
2139                         } else {
2140                                 # remove signoff lines
2141                                 next;
2142                         }
2143                 } else {
2144                         $signoff = 0;
2145                 }
2146
2147                 # print only one empty line
2148                 # do not print empty line after signoff
2149                 if ($line eq "") {
2150                         next if ($empty || $signoff);
2151                         $empty = 1;
2152                 } else {
2153                         $empty = 0;
2154                 }
2155
2156                 print format_log_line_html($line) . "<br/>\n";
2157         }
2158
2159         if ($opts{'-final_empty_line'}) {
2160                 # end with single empty line
2161                 print "<br/>\n" unless $empty;
2162         }
2163 }
2164
2165 # return link target (what link points to)
2166 sub git_get_link_target {
2167         my $hash = shift;
2168         my $link_target;
2169
2170         # read link
2171         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2172                 or return;
2173         {
2174                 local $/;
2175                 $link_target = <$fd>;
2176         }
2177         close $fd
2178                 or return;
2179
2180         return $link_target;
2181 }
2182
2183 # given link target, and the directory (basedir) the link is in,
2184 # return target of link relative to top directory (top tree);
2185 # return undef if it is not possible (including absolute links).
2186 sub normalize_link_target {
2187         my ($link_target, $basedir, $hash_base) = @_;
2188
2189         # we can normalize symlink target only if $hash_base is provided
2190         return unless $hash_base;
2191
2192         # absolute symlinks (beginning with '/') cannot be normalized
2193         return if (substr($link_target, 0, 1) eq '/');
2194
2195         # normalize link target to path from top (root) tree (dir)
2196         my $path;
2197         if ($basedir) {
2198                 $path = $basedir . '/' . $link_target;
2199         } else {
2200                 # we are in top (root) tree (dir)
2201                 $path = $link_target;
2202         }
2203
2204         # remove //, /./, and /../
2205         my @path_parts;
2206         foreach my $part (split('/', $path)) {
2207                 # discard '.' and ''
2208                 next if (!$part || $part eq '.');
2209                 # handle '..'
2210                 if ($part eq '..') {
2211                         if (@path_parts) {
2212                                 pop @path_parts;
2213                         } else {
2214                                 # link leads outside repository (outside top dir)
2215                                 return;
2216                         }
2217                 } else {
2218                         push @path_parts, $part;
2219                 }
2220         }
2221         $path = join('/', @path_parts);
2222
2223         return $path;
2224 }
2225
2226 # print tree entry (row of git_tree), but without encompassing <tr> element
2227 sub git_print_tree_entry {
2228         my ($t, $basedir, $hash_base, $have_blame) = @_;
2229
2230         my %base_key = ();
2231         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2232
2233         # The format of a table row is: mode list link.  Where mode is
2234         # the mode of the entry, list is the name of the entry, an href,
2235         # and link is the action links of the entry.
2236
2237         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2238         if ($t->{'type'} eq "blob") {
2239                 print "<td class=\"list\">" .
2240                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2241                                                file_name=>"$basedir$t->{'name'}", %base_key),
2242                                 -class => "list"}, esc_path($t->{'name'}));
2243                 if (S_ISLNK(oct $t->{'mode'})) {
2244                         my $link_target = git_get_link_target($t->{'hash'});
2245                         if ($link_target) {
2246                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2247                                 if (defined $norm_target) {
2248                                         print " -> " .
2249                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2250                                                                      file_name=>$norm_target),
2251                                                        -title => $norm_target}, esc_path($link_target));
2252                                 } else {
2253                                         print " -> " . esc_path($link_target);
2254                                 }
2255                         }
2256                 }
2257                 print "</td>\n";
2258                 print "<td class=\"link\">";
2259                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2260                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2261                               "blob");
2262                 if ($have_blame) {
2263                         print " | " .
2264                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2265                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2266                                       "blame");
2267                 }
2268                 if (defined $hash_base) {
2269                         print " | " .
2270                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2271                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2272                                       "history");
2273                 }
2274                 print " | " .
2275                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2276                                                file_name=>"$basedir$t->{'name'}")},
2277                                 "raw");
2278                 print "</td>\n";
2279
2280         } elsif ($t->{'type'} eq "tree") {
2281                 print "<td class=\"list\">";
2282                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2283                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2284                               esc_path($t->{'name'}));
2285                 print "</td>\n";
2286                 print "<td class=\"link\">";
2287                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2288                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2289                               "tree");
2290                 if (defined $hash_base) {
2291                         print " | " .
2292                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2293                                                      file_name=>"$basedir$t->{'name'}")},
2294                                       "history");
2295                 }
2296                 print "</td>\n";
2297         }
2298 }
2299
2300 ## ......................................................................
2301 ## functions printing large fragments of HTML
2302
2303 sub fill_from_file_info {
2304         my ($diff, @parents) = @_;
2305
2306         $diff->{'from_file'} = [ ];
2307         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2308         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2309                 if ($diff->{'status'}[$i] eq 'R' ||
2310                     $diff->{'status'}[$i] eq 'C') {
2311                         $diff->{'from_file'}[$i] =
2312                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2313                 }
2314         }
2315
2316         return $diff;
2317 }
2318
2319 # parameters can be strings, or references to arrays of strings
2320 sub from_ids_eq {
2321         my ($a, $b) = @_;
2322
2323         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2324                 for (my $i = 0; $i < @$a; ++$i) {
2325                         return 0 unless ($a->[$i] eq $b->[$i]);
2326                 }
2327                 return 1;
2328         } elsif (!ref($a) && !ref($b)) {
2329                 return $a eq $b;
2330         } else {
2331                 return 0;
2332         }
2333 }
2334
2335
2336 sub git_difftree_body {
2337         my ($difftree, $hash, @parents) = @_;
2338         my ($parent) = $parents[0];
2339         my ($have_blame) = gitweb_check_feature('blame');
2340         print "<div class=\"list_head\">\n";
2341         if ($#{$difftree} > 10) {
2342                 print(($#{$difftree} + 1) . " files changed:\n");
2343         }
2344         print "</div>\n";
2345
2346         print "<table class=\"" .
2347               (@parents > 1 ? "combined " : "") .
2348               "diff_tree\">\n";
2349         my $alternate = 1;
2350         my $patchno = 0;
2351         foreach my $line (@{$difftree}) {
2352                 my $diff;
2353                 if (ref($line) eq "HASH") {
2354                         # pre-parsed (or generated by hand)
2355                         $diff = $line;
2356                 } else {
2357                         $diff = parse_difftree_raw_line($line);
2358                 }
2359
2360                 if ($alternate) {
2361                         print "<tr class=\"dark\">\n";
2362                 } else {
2363                         print "<tr class=\"light\">\n";
2364                 }
2365                 $alternate ^= 1;
2366
2367                 if (exists $diff->{'nparents'}) { # combined diff
2368
2369                         fill_from_file_info($diff, @parents)
2370                                 unless exists $diff->{'from_file'};
2371
2372                         if ($diff->{'to_id'} ne ('0' x 40)) {
2373                                 # file exists in the result (child) commit
2374                                 print "<td>" .
2375                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2376                                                              file_name=>$diff->{'to_file'},
2377                                                              hash_base=>$hash),
2378                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2379                                       "</td>\n";
2380                         } else {
2381                                 print "<td>" .
2382                                       esc_path($diff->{'to_file'}) .
2383                                       "</td>\n";
2384                         }
2385
2386                         if ($action eq 'commitdiff') {
2387                                 # link to patch
2388                                 $patchno++;
2389                                 print "<td class=\"link\">" .
2390                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2391                                       " | " .
2392                                       "</td>\n";
2393                         }
2394
2395                         my $has_history = 0;
2396                         my $not_deleted = 0;
2397                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2398                                 my $hash_parent = $parents[$i];
2399                                 my $from_hash = $diff->{'from_id'}[$i];
2400                                 my $from_path = $diff->{'from_file'}[$i];
2401                                 my $status = $diff->{'status'}[$i];
2402
2403                                 $has_history ||= ($status ne 'A');
2404                                 $not_deleted ||= ($status ne 'D');
2405
2406                                 if ($status eq 'A') {
2407                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2408                                 } elsif ($status eq 'D') {
2409                                         print "<td class=\"link\">" .
2410                                               $cgi->a({-href => href(action=>"blob",
2411                                                                      hash_base=>$hash,
2412                                                                      hash=>$from_hash,
2413                                                                      file_name=>$from_path)},
2414                                                       "blob" . ($i+1)) .
2415                                               " | </td>\n";
2416                                 } else {
2417                                         if ($diff->{'to_id'} eq $from_hash) {
2418                                                 print "<td class=\"link nochange\">";
2419                                         } else {
2420                                                 print "<td class=\"link\">";
2421                                         }
2422                                         print $cgi->a({-href => href(action=>"blobdiff",
2423                                                                      hash=>$diff->{'to_id'},
2424                                                                      hash_parent=>$from_hash,
2425                                                                      hash_base=>$hash,
2426                                                                      hash_parent_base=>$hash_parent,
2427                                                                      file_name=>$diff->{'to_file'},
2428                                                                      file_parent=>$from_path)},
2429                                                       "diff" . ($i+1)) .
2430                                               " | </td>\n";
2431                                 }
2432                         }
2433
2434                         print "<td class=\"link\">";
2435                         if ($not_deleted) {
2436                                 print $cgi->a({-href => href(action=>"blob",
2437                                                              hash=>$diff->{'to_id'},
2438                                                              file_name=>$diff->{'to_file'},
2439                                                              hash_base=>$hash)},
2440                                               "blob");
2441                                 print " | " if ($has_history);
2442                         }
2443                         if ($has_history) {
2444                                 print $cgi->a({-href => href(action=>"history",
2445                                                              file_name=>$diff->{'to_file'},
2446                                                              hash_base=>$hash)},
2447                                               "history");
2448                         }
2449                         print "</td>\n";
2450
2451                         print "</tr>\n";
2452                         next; # instead of 'else' clause, to avoid extra indent
2453                 }
2454                 # else ordinary diff
2455
2456                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2457                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2458                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2459                         $to_mode_oct = oct $diff->{'to_mode'};
2460                         if (S_ISREG($to_mode_oct)) { # only for regular file
2461                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2462                         }
2463                         $to_file_type = file_type($diff->{'to_mode'});
2464                 }
2465                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2466                         $from_mode_oct = oct $diff->{'from_mode'};
2467                         if (S_ISREG($to_mode_oct)) { # only for regular file
2468                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2469                         }
2470                         $from_file_type = file_type($diff->{'from_mode'});
2471                 }
2472
2473                 if ($diff->{'status'} eq "A") { # created
2474                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2475                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2476                         $mode_chng   .= "]</span>";
2477                         print "<td>";
2478                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2479                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2480                                       -class => "list"}, esc_path($diff->{'file'}));
2481                         print "</td>\n";
2482                         print "<td>$mode_chng</td>\n";
2483                         print "<td class=\"link\">";
2484                         if ($action eq 'commitdiff') {
2485                                 # link to patch
2486                                 $patchno++;
2487                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2488                                 print " | ";
2489                         }
2490                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2491                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2492                                       "blob");
2493                         print "</td>\n";
2494
2495                 } elsif ($diff->{'status'} eq "D") { # deleted
2496                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2497                         print "<td>";
2498                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2499                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2500                                        -class => "list"}, esc_path($diff->{'file'}));
2501                         print "</td>\n";
2502                         print "<td>$mode_chng</td>\n";
2503                         print "<td class=\"link\">";
2504                         if ($action eq 'commitdiff') {
2505                                 # link to patch
2506                                 $patchno++;
2507                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2508                                 print " | ";
2509                         }
2510                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2511                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2512                                       "blob") . " | ";
2513                         if ($have_blame) {
2514                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2515                                                              file_name=>$diff->{'file'})},
2516                                               "blame") . " | ";
2517                         }
2518                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2519                                                      file_name=>$diff->{'file'})},
2520                                       "history");
2521                         print "</td>\n";
2522
2523                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2524                         my $mode_chnge = "";
2525                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2526                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2527                                 if ($from_file_type ne $to_file_type) {
2528                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2529                                 }
2530                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2531                                         if ($from_mode_str && $to_mode_str) {
2532                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2533                                         } elsif ($to_mode_str) {
2534                                                 $mode_chnge .= " mode: $to_mode_str";
2535                                         }
2536                                 }
2537                                 $mode_chnge .= "]</span>\n";
2538                         }
2539                         print "<td>";
2540                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2541                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2542                                       -class => "list"}, esc_path($diff->{'file'}));
2543                         print "</td>\n";
2544                         print "<td>$mode_chnge</td>\n";
2545                         print "<td class=\"link\">";
2546                         if ($action eq 'commitdiff') {
2547                                 # link to patch
2548                                 $patchno++;
2549                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2550                                       " | ";
2551                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2552                                 # "commit" view and modified file (not onlu mode changed)
2553                                 print $cgi->a({-href => href(action=>"blobdiff",
2554                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2555                                                              hash_base=>$hash, hash_parent_base=>$parent,
2556                                                              file_name=>$diff->{'file'})},
2557                                               "diff") .
2558                                       " | ";
2559                         }
2560                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2561                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2562                                        "blob") . " | ";
2563                         if ($have_blame) {
2564                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2565                                                              file_name=>$diff->{'file'})},
2566                                               "blame") . " | ";
2567                         }
2568                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2569                                                      file_name=>$diff->{'file'})},
2570                                       "history");
2571                         print "</td>\n";
2572
2573                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2574                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2575                         my $nstatus = $status_name{$diff->{'status'}};
2576                         my $mode_chng = "";
2577                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2578                                 # mode also for directories, so we cannot use $to_mode_str
2579                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2580                         }
2581                         print "<td>" .
2582                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2583                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2584                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2585                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2586                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2587                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2588                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2589                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2590                               "<td class=\"link\">";
2591                         if ($action eq 'commitdiff') {
2592                                 # link to patch
2593                                 $patchno++;
2594                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2595                                       " | ";
2596                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2597                                 # "commit" view and modified file (not only pure rename or copy)
2598                                 print $cgi->a({-href => href(action=>"blobdiff",
2599                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2600                                                              hash_base=>$hash, hash_parent_base=>$parent,
2601                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2602                                               "diff") .
2603                                       " | ";
2604                         }
2605                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2606                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2607                                       "blob") . " | ";
2608                         if ($have_blame) {
2609                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2610                                                              file_name=>$diff->{'to_file'})},
2611                                               "blame") . " | ";
2612                         }
2613                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2614                                                     file_name=>$diff->{'to_file'})},
2615                                       "history");
2616                         print "</td>\n";
2617
2618                 } # we should not encounter Unmerged (U) or Unknown (X) status
2619                 print "</tr>\n";
2620         }
2621         print "</table>\n";
2622 }
2623
2624 sub git_patchset_body {
2625         my ($fd, $difftree, $hash, @hash_parents) = @_;
2626         my ($hash_parent) = $hash_parents[0];
2627
2628         my $patch_idx = 0;
2629         my $patch_number = 0;
2630         my $patch_line;
2631         my $diffinfo;
2632         my (%from, %to);
2633
2634         print "<div class=\"patchset\">\n";
2635
2636         # skip to first patch
2637         while ($patch_line = <$fd>) {
2638                 chomp $patch_line;
2639
2640                 last if ($patch_line =~ m/^diff /);
2641         }
2642
2643  PATCH:
2644         while ($patch_line) {
2645                 my @diff_header;
2646                 my ($from_id, $to_id);
2647
2648                 # git diff header
2649                 #assert($patch_line =~ m/^diff /) if DEBUG;
2650                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2651                 $patch_number++;
2652                 push @diff_header, $patch_line;
2653
2654                 # extended diff header
2655         EXTENDED_HEADER:
2656                 while ($patch_line = <$fd>) {
2657                         chomp $patch_line;
2658
2659                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2660
2661                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2662                                 $from_id = $1;
2663                                 $to_id   = $2;
2664                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2665                                 $from_id = [ split(',', $1) ];
2666                                 $to_id   = $2;
2667                         }
2668
2669                         push @diff_header, $patch_line;
2670                 }
2671                 my $last_patch_line = $patch_line;
2672
2673                 # check if current patch belong to current raw line
2674                 # and parse raw git-diff line if needed
2675                 if (defined $diffinfo &&
2676                     defined $from_id && defined $to_id &&
2677                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2678                     $diffinfo->{'to_id'} eq $to_id) {
2679                         # this is continuation of a split patch
2680                         print "<div class=\"patch cont\">\n";
2681                 } else {
2682                         # advance raw git-diff output if needed
2683                         $patch_idx++ if defined $diffinfo;
2684
2685                         # read and prepare patch information
2686                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2687                                 # pre-parsed (or generated by hand)
2688                                 $diffinfo = $difftree->[$patch_idx];
2689                         } else {
2690                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2691                         }
2692                         if ($diffinfo->{'nparents'}) {
2693                                 # combined diff
2694                                 $from{'file'} = [];
2695                                 $from{'href'} = [];
2696                                 fill_from_file_info($diffinfo, @hash_parents)
2697                                         unless exists $diffinfo->{'from_file'};
2698                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2699                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2700                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2701                                                 $from{'href'}[$i] = href(action=>"blob",
2702                                                                          hash_base=>$hash_parents[$i],
2703                                                                          hash=>$diffinfo->{'from_id'}[$i],
2704                                                                          file_name=>$from{'file'}[$i]);
2705                                         } else {
2706                                                 $from{'href'}[$i] = undef;
2707                                         }
2708                                 }
2709                         } else {
2710                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2711                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2712                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2713                                                              hash=>$diffinfo->{'from_id'},
2714                                                              file_name=>$from{'file'});
2715                                 } else {
2716                                         delete $from{'href'};
2717                                 }
2718                         }
2719                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2720                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2721                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2722                                                    hash=>$diffinfo->{'to_id'},
2723                                                    file_name=>$to{'file'});
2724                         } else {
2725                                 delete $to{'href'};
2726                         }
2727                         # this is first patch for raw difftree line with $patch_idx index
2728                         # we index @$difftree array from 0, but number patches from 1
2729                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2730                 }
2731
2732                 # print "git diff" header
2733                 $patch_line = shift @diff_header;
2734                 if ($diffinfo->{'nparents'}) {
2735
2736                         # combined diff
2737                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2738                         if ($to{'href'}) {
2739                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2740                                                        esc_path($to{'file'}));
2741                         } else { # file was deleted
2742                                 $patch_line .= esc_path($to{'file'});
2743                         }
2744
2745                 } else {
2746
2747                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2748                         if ($from{'href'}) {
2749                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2750                                                        'a/' . esc_path($from{'file'}));
2751                         } else { # file was added
2752                                 $patch_line .= 'a/' . esc_path($from{'file'});
2753                         }
2754                         $patch_line .= ' ';
2755                         if ($to{'href'}) {
2756                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2757                                                        'b/' . esc_path($to{'file'}));
2758                         } else { # file was deleted
2759                                 $patch_line .= 'b/' . esc_path($to{'file'});
2760                         }
2761
2762                 }
2763                 print "<div class=\"diff header\">$patch_line</div>\n";
2764
2765                 # print extended diff header
2766                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2767         EXTENDED_HEADER:
2768                 foreach $patch_line (@diff_header) {
2769                         # match <path>
2770                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2771                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2772                                                        esc_path($from{'file'}));
2773                         }
2774                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2775                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2776                                                        esc_path($to{'file'}));
2777                         }
2778                         # match single <mode>
2779                         if ($patch_line =~ m/\s(\d{6})$/) {
2780                                 $patch_line .= '<span class="info"> (' .
2781                                                file_type_long($1) .
2782                                                ')</span>';
2783                         }
2784                         # match <hash>
2785                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2786                                 # can match only for combined diff
2787                                 $patch_line = 'index ';
2788                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2789                                         if ($from{'href'}[$i]) {
2790                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2791                                                                         -class=>"hash"},
2792                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2793                                         } else {
2794                                                 $patch_line .= '0' x 7;
2795                                         }
2796                                         # separator
2797                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2798                                 }
2799                                 $patch_line .= '..';
2800                                 if ($to{'href'}) {
2801                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2802                                                                substr($diffinfo->{'to_id'},0,7));
2803                                 } else {
2804                                         $patch_line .= '0' x 7;
2805                                 }
2806
2807                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2808                                 # can match only for ordinary diff
2809                                 my ($from_link, $to_link);
2810                                 if ($from{'href'}) {
2811                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2812                                                              substr($diffinfo->{'from_id'},0,7));
2813                                 } else {
2814                                         $from_link = '0' x 7;
2815                                 }
2816                                 if ($to{'href'}) {
2817                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2818                                                            substr($diffinfo->{'to_id'},0,7));
2819                                 } else {
2820                                         $to_link = '0' x 7;
2821                                 }
2822                                 #affirm {
2823                                 #       my ($from_hash, $to_hash) =
2824                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2825                                 #       my ($from_id, $to_id) =
2826                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2827                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2828                                 #} if DEBUG;
2829                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2830                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2831                         }
2832                         print $patch_line . "<br/>\n";
2833                 }
2834                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2835
2836                 # from-file/to-file diff header
2837                 $patch_line = $last_patch_line;
2838                 if (! $patch_line) {
2839                         print "</div>\n"; # class="patch"
2840                         last PATCH;
2841                 }
2842                 next PATCH if ($patch_line =~ m/^diff /);
2843                 #assert($patch_line =~ m/^---/) if DEBUG;
2844                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2845                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2846                         $patch_line = '--- a/' .
2847                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2848                                               esc_path($from{'file'}));
2849                 }
2850                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2851
2852                 $patch_line = <$fd>;
2853                 chomp $patch_line;
2854
2855                 #assert($patch_line =~ m/^+++/) if DEBUG;
2856                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2857                         $patch_line = '+++ b/' .
2858                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2859                                               esc_path($to{'file'}));
2860                 }
2861                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2862
2863                 # the patch itself
2864         LINE:
2865                 while ($patch_line = <$fd>) {
2866                         chomp $patch_line;
2867
2868                         next PATCH if ($patch_line =~ m/^diff /);
2869
2870                         print format_diff_line($patch_line, \%from, \%to);
2871                 }
2872
2873         } continue {
2874                 print "</div>\n"; # class="patch"
2875         }
2876         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2877
2878         print "</div>\n"; # class="patchset"
2879 }
2880
2881 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2882
2883 sub git_project_list_body {
2884         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2885
2886         my ($check_forks) = gitweb_check_feature('forks');
2887
2888         my @projects;
2889         foreach my $pr (@$projlist) {
2890                 my (@aa) = git_get_last_activity($pr->{'path'});
2891                 unless (@aa) {
2892                         next;
2893                 }
2894                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2895                 if (!defined $pr->{'descr'}) {
2896                         my $descr = git_get_project_description($pr->{'path'}) || "";
2897                         $pr->{'descr_long'} = decode_utf8($descr);
2898                         $pr->{'descr'} = chop_str($descr, 25, 5);
2899                 }
2900                 if (!defined $pr->{'owner'}) {
2901                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2902                 }
2903                 if ($check_forks) {
2904                         my $pname = $pr->{'path'};
2905                         if (($pname =~ s/\.git$//) &&
2906                             ($pname !~ /\/$/) &&
2907                             (-d "$projectroot/$pname")) {
2908                                 $pr->{'forks'} = "-d $projectroot/$pname";
2909                         }
2910                         else {
2911                                 $pr->{'forks'} = 0;
2912                         }
2913                 }
2914                 push @projects, $pr;
2915         }
2916
2917         $order ||= $default_projects_order;
2918         $from = 0 unless defined $from;
2919         $to = $#projects if (!defined $to || $#projects < $to);
2920
2921         print "<table class=\"project_list\">\n";
2922         unless ($no_header) {
2923                 print "<tr>\n";
2924                 if ($check_forks) {
2925                         print "<th></th>\n";
2926                 }
2927                 if ($order eq "project") {
2928                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2929                         print "<th>Project</th>\n";
2930                 } else {
2931                         print "<th>" .
2932                               $cgi->a({-href => href(project=>undef, order=>'project'),
2933                                        -class => "header"}, "Project") .
2934                               "</th>\n";
2935                 }
2936                 if ($order eq "descr") {
2937                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2938                         print "<th>Description</th>\n";
2939                 } else {
2940                         print "<th>" .
2941                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2942                                        -class => "header"}, "Description") .
2943                               "</th>\n";
2944                 }
2945                 if ($order eq "owner") {
2946                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2947                         print "<th>Owner</th>\n";
2948                 } else {
2949                         print "<th>" .
2950                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2951                                        -class => "header"}, "Owner") .
2952                               "</th>\n";
2953                 }
2954                 if ($order eq "age") {
2955                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2956                         print "<th>Last Change</th>\n";
2957                 } else {
2958                         print "<th>" .
2959                               $cgi->a({-href => href(project=>undef, order=>'age'),
2960                                        -class => "header"}, "Last Change") .
2961                               "</th>\n";
2962                 }
2963                 print "<th></th>\n" .
2964                       "</tr>\n";
2965         }
2966         my $alternate = 1;
2967         for (my $i = $from; $i <= $to; $i++) {
2968                 my $pr = $projects[$i];
2969                 if ($alternate) {
2970                         print "<tr class=\"dark\">\n";
2971                 } else {
2972                         print "<tr class=\"light\">\n";
2973                 }
2974                 $alternate ^= 1;
2975                 if ($check_forks) {
2976                         print "<td>";
2977                         if ($pr->{'forks'}) {
2978                                 print "<!-- $pr->{'forks'} -->\n";
2979                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2980                         }
2981                         print "</td>\n";
2982                 }
2983                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2984                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2985                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2986                                         -class => "list", -title => $pr->{'descr_long'}},
2987                                         esc_html($pr->{'descr'})) . "</td>\n" .
2988                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2989                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2990                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
2991                       "<td class=\"link\">" .
2992                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2993                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2994                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2995                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2996                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2997                       "</td>\n" .
2998                       "</tr>\n";
2999         }
3000         if (defined $extra) {
3001                 print "<tr>\n";
3002                 if ($check_forks) {
3003                         print "<td></td>\n";
3004                 }
3005                 print "<td colspan=\"5\">$extra</td>\n" .
3006                       "</tr>\n";
3007         }
3008         print "</table>\n";
3009 }
3010
3011 sub git_shortlog_body {
3012         # uses global variable $project
3013         my ($commitlist, $from, $to, $refs, $extra) = @_;
3014
3015         my $have_snapshot = gitweb_have_snapshot();
3016
3017         $from = 0 unless defined $from;
3018         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3019
3020         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3021         my $alternate = 1;
3022         for (my $i = $from; $i <= $to; $i++) {
3023                 my %co = %{$commitlist->[$i]};
3024                 my $commit = $co{'id'};
3025                 my $ref = format_ref_marker($refs, $commit);
3026                 if ($alternate) {
3027                         print "<tr class=\"dark\">\n";
3028                 } else {
3029                         print "<tr class=\"light\">\n";
3030                 }
3031                 $alternate ^= 1;
3032                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3033                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3034                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3035                       "<td>";
3036                 print format_subject_html($co{'title'}, $co{'title_short'},
3037                                           href(action=>"commit", hash=>$commit), $ref);
3038                 print "</td>\n" .
3039                       "<td class=\"link\">" .
3040                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3041                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3042                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3043                 if ($have_snapshot) {
3044                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3045                 }
3046                 print "</td>\n" .
3047                       "</tr>\n";
3048         }
3049         if (defined $extra) {
3050                 print "<tr>\n" .
3051                       "<td colspan=\"4\">$extra</td>\n" .
3052                       "</tr>\n";
3053         }
3054         print "</table>\n";
3055 }
3056
3057 sub git_history_body {
3058         # Warning: assumes constant type (blob or tree) during history
3059         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3060
3061         $from = 0 unless defined $from;
3062         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3063
3064         print "<table class=\"history\" cellspacing=\"0\">\n";
3065         my $alternate = 1;
3066         for (my $i = $from; $i <= $to; $i++) {
3067                 my %co = %{$commitlist->[$i]};
3068                 if (!%co) {
3069                         next;
3070                 }
3071                 my $commit = $co{'id'};
3072
3073                 my $ref = format_ref_marker($refs, $commit);
3074
3075                 if ($alternate) {
3076                         print "<tr class=\"dark\">\n";
3077                 } else {
3078                         print "<tr class=\"light\">\n";
3079                 }
3080                 $alternate ^= 1;
3081                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3082                       # shortlog uses      chop_str($co{'author_name'}, 10)
3083                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3084                       "<td>";
3085                 # originally git_history used chop_str($co{'title'}, 50)
3086                 print format_subject_html($co{'title'}, $co{'title_short'},
3087                                           href(action=>"commit", hash=>$commit), $ref);
3088                 print "</td>\n" .
3089                       "<td class=\"link\">" .
3090                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3091                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3092
3093                 if ($ftype eq 'blob') {
3094                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3095                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3096                         if (defined $blob_current && defined $blob_parent &&
3097                                         $blob_current ne $blob_parent) {
3098                                 print " | " .
3099                                         $cgi->a({-href => href(action=>"blobdiff",
3100                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3101                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3102                                                                file_name=>$file_name)},
3103                                                 "diff to current");
3104                         }
3105                 }
3106                 print "</td>\n" .
3107                       "</tr>\n";
3108         }
3109         if (defined $extra) {
3110                 print "<tr>\n" .
3111                       "<td colspan=\"4\">$extra</td>\n" .
3112                       "</tr>\n";
3113         }
3114         print "</table>\n";
3115 }
3116
3117 sub git_tags_body {
3118         # uses global variable $project
3119         my ($taglist, $from, $to, $extra) = @_;
3120         $from = 0 unless defined $from;
3121         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3122
3123         print "<table class=\"tags\" cellspacing=\"0\">\n";
3124         my $alternate = 1;
3125         for (my $i = $from; $i <= $to; $i++) {
3126                 my $entry = $taglist->[$i];
3127                 my %tag = %$entry;
3128                 my $comment = $tag{'subject'};
3129                 my $comment_short;
3130                 if (defined $comment) {
3131                         $comment_short = chop_str($comment, 30, 5);
3132                 }
3133                 if ($alternate) {
3134                         print "<tr class=\"dark\">\n";
3135                 } else {
3136                         print "<tr class=\"light\">\n";
3137                 }
3138                 $alternate ^= 1;
3139                 if (defined $tag{'age'}) {
3140                         print "<td><i>$tag{'age'}</i></td>\n";
3141                 } else {
3142                         print "<td></td>\n";
3143                 }
3144                 print "<td>" .
3145                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3146                                -class => "list name"}, esc_html($tag{'name'})) .
3147                       "</td>\n" .
3148                       "<td>";
3149                 if (defined $comment) {
3150                         print format_subject_html($comment, $comment_short,
3151                                                   href(action=>"tag", hash=>$tag{'id'}));
3152                 }
3153                 print "</td>\n" .
3154                       "<td class=\"selflink\">";
3155                 if ($tag{'type'} eq "tag") {
3156                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3157                 } else {
3158                         print "&nbsp;";
3159                 }
3160                 print "</td>\n" .
3161                       "<td class=\"link\">" . " | " .
3162                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3163                 if ($tag{'reftype'} eq "commit") {
3164                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3165                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3166                 } elsif ($tag{'reftype'} eq "blob") {
3167                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3168                 }
3169                 print "</td>\n" .
3170                       "</tr>";
3171         }
3172         if (defined $extra) {
3173                 print "<tr>\n" .
3174                       "<td colspan=\"5\">$extra</td>\n" .
3175                       "</tr>\n";
3176         }
3177         print "</table>\n";
3178 }
3179
3180 sub git_heads_body {
3181         # uses global variable $project
3182         my ($headlist, $head, $from, $to, $extra) = @_;
3183         $from = 0 unless defined $from;
3184         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3185
3186         print "<table class=\"heads\" cellspacing=\"0\">\n";
3187         my $alternate = 1;
3188         for (my $i = $from; $i <= $to; $i++) {
3189                 my $entry = $headlist->[$i];
3190                 my %ref = %$entry;
3191                 my $curr = $ref{'id'} eq $head;
3192                 if ($alternate) {
3193                         print "<tr class=\"dark\">\n";
3194                 } else {
3195                         print "<tr class=\"light\">\n";
3196                 }
3197                 $alternate ^= 1;
3198                 print "<td><i>$ref{'age'}</i></td>\n" .
3199                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3200                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3201                                -class => "list name"},esc_html($ref{'name'})) .
3202                       "</td>\n" .
3203                       "<td class=\"link\">" .
3204                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3205                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3206                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3207                       "</td>\n" .
3208                       "</tr>";
3209         }
3210         if (defined $extra) {
3211                 print "<tr>\n" .
3212                       "<td colspan=\"3\">$extra</td>\n" .
3213                       "</tr>\n";
3214         }
3215         print "</table>\n";
3216 }
3217
3218 sub git_search_grep_body {
3219         my ($commitlist, $from, $to, $extra) = @_;
3220         $from = 0 unless defined $from;
3221         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3222
3223         print "<table class=\"grep\" cellspacing=\"0\">\n";
3224         my $alternate = 1;
3225         for (my $i = $from; $i <= $to; $i++) {
3226                 my %co = %{$commitlist->[$i]};
3227                 if (!%co) {
3228                         next;
3229                 }
3230                 my $commit = $co{'id'};
3231                 if ($alternate) {
3232                         print "<tr class=\"dark\">\n";
3233                 } else {
3234                         print "<tr class=\"light\">\n";
3235                 }
3236                 $alternate ^= 1;
3237                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3238                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3239                       "<td>" .
3240                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3241                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3242                 my $comment = $co{'comment'};
3243                 foreach my $line (@$comment) {
3244                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3245                                 my $lead = esc_html($1) || "";
3246                                 $lead = chop_str($lead, 30, 10);
3247                                 my $match = esc_html($2) || "";
3248                                 my $trail = esc_html($3) || "";
3249                                 $trail = chop_str($trail, 30, 10);
3250                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3251                                 print chop_str($text, 80, 5) . "<br/>\n";
3252                         }
3253                 }
3254                 print "</td>\n" .
3255                       "<td class=\"link\">" .
3256                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3257                       " | " .
3258                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3259                 print "</td>\n" .
3260                       "</tr>\n";
3261         }
3262         if (defined $extra) {
3263                 print "<tr>\n" .
3264                       "<td colspan=\"3\">$extra</td>\n" .
3265                       "</tr>\n";
3266         }
3267         print "</table>\n";
3268 }
3269
3270 ## ======================================================================
3271 ## ======================================================================
3272 ## actions
3273
3274 sub git_project_list {
3275         my $order = $cgi->param('o');
3276         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3277                 die_error(undef, "Unknown order parameter");
3278         }
3279
3280         my @list = git_get_projects_list();
3281         if (!@list) {
3282                 die_error(undef, "No projects found");
3283         }
3284
3285         git_header_html();
3286         if (-f $home_text) {
3287                 print "<div class=\"index_include\">\n";
3288                 open (my $fd, $home_text);
3289                 print <$fd>;
3290                 close $fd;
3291                 print "</div>\n";
3292         }
3293         git_project_list_body(\@list, $order);
3294         git_footer_html();
3295 }
3296
3297 sub git_forks {
3298         my $order = $cgi->param('o');
3299         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3300                 die_error(undef, "Unknown order parameter");
3301         }
3302
3303         my @list = git_get_projects_list($project);
3304         if (!@list) {
3305                 die_error(undef, "No forks found");
3306         }
3307
3308         git_header_html();
3309         git_print_page_nav('','');
3310         git_print_header_div('summary', "$project forks");
3311         git_project_list_body(\@list, $order);
3312         git_footer_html();
3313 }
3314
3315 sub git_project_index {
3316         my @projects = git_get_projects_list($project);
3317
3318         print $cgi->header(
3319                 -type => 'text/plain',
3320                 -charset => 'utf-8',
3321                 -content_disposition => 'inline; filename="index.aux"');
3322
3323         foreach my $pr (@projects) {
3324                 if (!exists $pr->{'owner'}) {
3325                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3326                 }
3327
3328                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3329                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3330                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3331                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3332                 $path  =~ s/ /\+/g;
3333                 $owner =~ s/ /\+/g;
3334
3335                 print "$path $owner\n";
3336         }
3337 }
3338
3339 sub git_summary {
3340         my $descr = git_get_project_description($project) || "none";
3341         my %co = parse_commit("HEAD");
3342         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3343         my $head = $co{'id'};
3344
3345         my $owner = git_get_project_owner($project);
3346
3347         my $refs = git_get_references();
3348         # These get_*_list functions return one more to allow us to see if
3349         # there are more ...
3350         my @taglist  = git_get_tags_list(16);
3351         my @headlist = git_get_heads_list(16);
3352         my @forklist;
3353         my ($check_forks) = gitweb_check_feature('forks');
3354
3355         if ($check_forks) {
3356                 @forklist = git_get_projects_list($project);
3357         }
3358
3359         git_header_html();
3360         git_print_page_nav('summary','', $head);
3361
3362         print "<div class=\"title\">&nbsp;</div>\n";
3363         print "<table cellspacing=\"0\">\n" .
3364               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3365               "<tr><td>owner</td><td>$owner</td></tr>\n";
3366         if (defined $cd{'rfc2822'}) {
3367                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3368         }
3369
3370         # use per project git URL list in $projectroot/$project/cloneurl
3371         # or make project git URL from git base URL and project name
3372         my $url_tag = "URL";
3373         my @url_list = git_get_project_url_list($project);
3374         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3375         foreach my $git_url (@url_list) {
3376                 next unless $git_url;
3377                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3378                 $url_tag = "";
3379         }
3380         print "</table>\n";
3381
3382         if (-s "$projectroot/$project/README.html") {
3383                 if (open my $fd, "$projectroot/$project/README.html") {
3384                         print "<div class=\"title\">readme</div>\n";
3385                         print $_ while (<$fd>);
3386                         close $fd;
3387                 }
3388         }
3389
3390         # we need to request one more than 16 (0..15) to check if
3391         # those 16 are all
3392         my @commitlist = $head ? parse_commits($head, 17) : ();
3393         if (@commitlist) {
3394                 git_print_header_div('shortlog');
3395                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3396                                   $#commitlist <=  15 ? undef :
3397                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3398         }
3399
3400         if (@taglist) {
3401                 git_print_header_div('tags');
3402                 git_tags_body(\@taglist, 0, 15,
3403                               $#taglist <=  15 ? undef :
3404                               $cgi->a({-href => href(action=>"tags")}, "..."));
3405         }
3406
3407         if (@headlist) {
3408                 git_print_header_div('heads');
3409                 git_heads_body(\@headlist, $head, 0, 15,
3410                                $#headlist <= 15 ? undef :
3411                                $cgi->a({-href => href(action=>"heads")}, "..."));
3412         }
3413
3414         if (@forklist) {
3415                 git_print_header_div('forks');
3416                 git_project_list_body(\@forklist, undef, 0, 15,
3417                                       $#forklist <= 15 ? undef :
3418                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3419                                       'noheader');
3420         }
3421
3422         git_footer_html();
3423 }
3424
3425 sub git_tag {
3426         my $head = git_get_head_hash($project);
3427         git_header_html();
3428         git_print_page_nav('','', $head,undef,$head);
3429         my %tag = parse_tag($hash);
3430
3431         if (! %tag) {
3432                 die_error(undef, "Unknown tag object");
3433         }
3434
3435         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3436         print "<div class=\"title_text\">\n" .
3437               "<table cellspacing=\"0\">\n" .
3438               "<tr>\n" .
3439               "<td>object</td>\n" .
3440               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3441                                $tag{'object'}) . "</td>\n" .
3442               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3443                                               $tag{'type'}) . "</td>\n" .
3444               "</tr>\n";
3445         if (defined($tag{'author'})) {
3446                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3447                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3448                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3449                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3450                         "</td></tr>\n";
3451         }
3452         print "</table>\n\n" .
3453               "</div>\n";
3454         print "<div class=\"page_body\">";
3455         my $comment = $tag{'comment'};
3456         foreach my $line (@$comment) {
3457                 chomp $line;
3458                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3459         }
3460         print "</div>\n";
3461         git_footer_html();
3462 }
3463
3464 sub git_blame2 {
3465         my $fd;
3466         my $ftype;
3467
3468         my ($have_blame) = gitweb_check_feature('blame');
3469         if (!$have_blame) {
3470                 die_error('403 Permission denied', "Permission denied");
3471         }
3472         die_error('404 Not Found', "File name not defined") if (!$file_name);
3473         $hash_base ||= git_get_head_hash($project);
3474         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3475         my %co = parse_commit($hash_base)
3476                 or die_error(undef, "Reading commit failed");
3477         if (!defined $hash) {
3478                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3479                         or die_error(undef, "Error looking up file");
3480         }
3481         $ftype = git_get_type($hash);
3482         if ($ftype !~ "blob") {
3483                 die_error('400 Bad Request', "Object is not a blob");
3484         }
3485         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3486               $file_name, $hash_base)
3487                 or die_error(undef, "Open git-blame failed");
3488         git_header_html();
3489         my $formats_nav =
3490                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3491                         "blob") .
3492                 " | " .
3493                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3494                         "history") .
3495                 " | " .
3496                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3497                         "HEAD");
3498         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3499         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3500         git_print_page_path($file_name, $ftype, $hash_base);
3501         my @rev_color = (qw(light2 dark2));
3502         my $num_colors = scalar(@rev_color);
3503         my $current_color = 0;
3504         my $last_rev;
3505         print <<HTML;
3506 <div class="page_body">
3507 <table class="blame">
3508 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3509 HTML
3510         my %metainfo = ();
3511         while (1) {
3512                 $_ = <$fd>;
3513                 last unless defined $_;
3514                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3515                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3516                 if (!exists $metainfo{$full_rev}) {
3517                         $metainfo{$full_rev} = {};
3518                 }
3519                 my $meta = $metainfo{$full_rev};
3520                 while (<$fd>) {
3521                         last if (s/^\t//);
3522                         if (/^(\S+) (.*)$/) {
3523                                 $meta->{$1} = $2;
3524                         }
3525                 }
3526                 my $data = $_;
3527                 chomp $data;
3528                 my $rev = substr($full_rev, 0, 8);
3529                 my $author = $meta->{'author'};
3530                 my %date = parse_date($meta->{'author-time'},
3531                                       $meta->{'author-tz'});
3532                 my $date = $date{'iso-tz'};
3533                 if ($group_size) {
3534                         $current_color = ++$current_color % $num_colors;
3535                 }
3536                 print "<tr class=\"$rev_color[$current_color]\">\n";
3537                 if ($group_size) {
3538                         print "<td class=\"sha1\"";
3539                         print " title=\"". esc_html($author) . ", $date\"";
3540                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3541                         print ">";
3542                         print $cgi->a({-href => href(action=>"commit",
3543                                                      hash=>$full_rev,
3544                                                      file_name=>$file_name)},
3545                                       esc_html($rev));
3546                         print "</td>\n";
3547                 }
3548                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3549                         or die_error(undef, "Open git-rev-parse failed");
3550                 my $parent_commit = <$dd>;
3551                 close $dd;
3552                 chomp($parent_commit);
3553                 my $blamed = href(action => 'blame',
3554                                   file_name => $meta->{'filename'},
3555                                   hash_base => $parent_commit);
3556                 print "<td class=\"linenr\">";
3557                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3558                                 -id => "l$lineno",
3559                                 -class => "linenr" },
3560                               esc_html($lineno));
3561                 print "</td>";
3562                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3563                 print "</tr>\n";
3564         }
3565         print "</table>\n";
3566         print "</div>";
3567         close $fd
3568                 or print "Reading blob failed\n";
3569         git_footer_html();
3570 }
3571
3572 sub git_blame {
3573         my $fd;
3574
3575         my ($have_blame) = gitweb_check_feature('blame');
3576         if (!$have_blame) {
3577                 die_error('403 Permission denied', "Permission denied");
3578         }
3579         die_error('404 Not Found', "File name not defined") if (!$file_name);
3580         $hash_base ||= git_get_head_hash($project);
3581         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3582         my %co = parse_commit($hash_base)
3583                 or die_error(undef, "Reading commit failed");
3584         if (!defined $hash) {
3585                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3586                         or die_error(undef, "Error lookup file");
3587         }
3588         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3589                 or die_error(undef, "Open git-annotate failed");
3590         git_header_html();
3591         my $formats_nav =
3592                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3593                         "blob") .
3594                 " | " .
3595                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3596                         "history") .
3597                 " | " .
3598                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3599                         "HEAD");
3600         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3601         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3602         git_print_page_path($file_name, 'blob', $hash_base);
3603         print "<div class=\"page_body\">\n";
3604         print <<HTML;
3605 <table class="blame">
3606   <tr>
3607     <th>Commit</th>
3608     <th>Age</th>
3609     <th>Author</th>
3610     <th>Line</th>
3611     <th>Data</th>
3612   </tr>
3613 HTML
3614         my @line_class = (qw(light dark));
3615         my $line_class_len = scalar (@line_class);
3616         my $line_class_num = $#line_class;
3617         while (my $line = <$fd>) {
3618                 my $long_rev;
3619                 my $short_rev;
3620                 my $author;
3621                 my $time;
3622                 my $lineno;
3623                 my $data;
3624                 my $age;
3625                 my $age_str;
3626                 my $age_class;
3627
3628                 chomp $line;
3629                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3630
3631                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3632                         $long_rev = $1;
3633                         $author   = $2;
3634                         $time     = $3;
3635                         $lineno   = $4;
3636                         $data     = $5;
3637                 } else {
3638                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3639                         next;
3640                 }
3641                 $short_rev  = substr ($long_rev, 0, 8);
3642                 $age        = time () - $time;
3643                 $age_str    = age_string ($age);
3644                 $age_str    =~ s/ /&nbsp;/g;
3645                 $age_class  = age_class($age);
3646                 $author     = esc_html ($author);
3647                 $author     =~ s/ /&nbsp;/g;
3648
3649                 $data = untabify($data);
3650                 $data = esc_html ($data);
3651
3652                 print <<HTML;
3653   <tr class="$line_class[$line_class_num]">
3654     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3655     <td class="$age_class">$age_str</td>
3656     <td>$author</td>
3657     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3658     <td class="pre">$data</td>
3659   </tr>
3660 HTML
3661         } # while (my $line = <$fd>)
3662         print "</table>\n\n";
3663         close $fd
3664                 or print "Reading blob failed.\n";
3665         print "</div>";
3666         git_footer_html();
3667 }
3668
3669 sub git_tags {
3670         my $head = git_get_head_hash($project);
3671         git_header_html();
3672         git_print_page_nav('','', $head,undef,$head);
3673         git_print_header_div('summary', $project);
3674
3675         my @tagslist = git_get_tags_list();
3676         if (@tagslist) {
3677                 git_tags_body(\@tagslist);
3678         }
3679         git_footer_html();
3680 }
3681
3682 sub git_heads {
3683         my $head = git_get_head_hash($project);
3684         git_header_html();
3685         git_print_page_nav('','', $head,undef,$head);
3686         git_print_header_div('summary', $project);
3687
3688         my @headslist = git_get_heads_list();
3689         if (@headslist) {
3690                 git_heads_body(\@headslist, $head);
3691         }
3692         git_footer_html();
3693 }
3694
3695 sub git_blob_plain {
3696         my $expires;
3697
3698         if (!defined $hash) {
3699                 if (defined $file_name) {
3700                         my $base = $hash_base || git_get_head_hash($project);
3701                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3702                                 or die_error(undef, "Error lookup file");
3703                 } else {
3704                         die_error(undef, "No file name defined");
3705                 }
3706         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3707                 # blobs defined by non-textual hash id's can be cached
3708                 $expires = "+1d";
3709         }
3710
3711         my $type = shift;
3712         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3713                 or die_error(undef, "Couldn't cat $file_name, $hash");
3714
3715         $type ||= blob_mimetype($fd, $file_name);
3716
3717         # save as filename, even when no $file_name is given
3718         my $save_as = "$hash";
3719         if (defined $file_name) {
3720                 $save_as = $file_name;
3721         } elsif ($type =~ m/^text\//) {
3722                 $save_as .= '.txt';
3723         }
3724
3725         print $cgi->header(
3726                 -type => "$type",
3727                 -expires=>$expires,
3728                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3729         undef $/;
3730         binmode STDOUT, ':raw';
3731         print <$fd>;
3732         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3733         $/ = "\n";
3734         close $fd;
3735 }
3736
3737 sub git_blob {
3738         my $expires;
3739
3740         if (!defined $hash) {
3741                 if (defined $file_name) {
3742                         my $base = $hash_base || git_get_head_hash($project);
3743                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3744                                 or die_error(undef, "Error lookup file");
3745                 } else {
3746                         die_error(undef, "No file name defined");
3747                 }
3748         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3749                 # blobs defined by non-textual hash id's can be cached
3750                 $expires = "+1d";
3751         }
3752
3753         my ($have_blame) = gitweb_check_feature('blame');
3754         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3755                 or die_error(undef, "Couldn't cat $file_name, $hash");
3756         my $mimetype = blob_mimetype($fd, $file_name);
3757         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3758                 close $fd;
3759                 return git_blob_plain($mimetype);
3760         }
3761         # we can have blame only for text/* mimetype
3762         $have_blame &&= ($mimetype =~ m!^text/!);
3763
3764         git_header_html(undef, $expires);
3765         my $formats_nav = '';
3766         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3767                 if (defined $file_name) {
3768                         if ($have_blame) {
3769                                 $formats_nav .=
3770                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3771                                                                hash=>$hash, file_name=>$file_name)},
3772                                                 "blame") .
3773                                         " | ";
3774                         }
3775                         $formats_nav .=
3776                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3777                                                        hash=>$hash, file_name=>$file_name)},
3778                                         "history") .
3779                                 " | " .
3780                                 $cgi->a({-href => href(action=>"blob_plain",
3781                                                        hash=>$hash, file_name=>$file_name)},
3782                                         "raw") .
3783                                 " | " .
3784                                 $cgi->a({-href => href(action=>"blob",
3785                                                        hash_base=>"HEAD", file_name=>$file_name)},
3786                                         "HEAD");
3787                 } else {
3788                         $formats_nav .=
3789                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3790                 }
3791                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3792                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3793         } else {
3794                 print "<div class=\"page_nav\">\n" .
3795                       "<br/><br/></div>\n" .
3796                       "<div class=\"title\">$hash</div>\n";
3797         }
3798         git_print_page_path($file_name, "blob", $hash_base);
3799         print "<div class=\"page_body\">\n";
3800         if ($mimetype =~ m!^text/!) {
3801                 my $nr;
3802                 while (my $line = <$fd>) {
3803                         chomp $line;
3804                         $nr++;
3805                         $line = untabify($line);
3806                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3807                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3808                 }
3809         } elsif ($mimetype =~ m!^image/!) {
3810                 print qq!<img type="$mimetype"!;
3811                 if ($file_name) {
3812                         print qq! alt="$file_name" title="$file_name"!;
3813                 }
3814                 print qq! src="! .
3815                       href(action=>"blob_plain", hash=>$hash,
3816                            hash_base=>$hash_base, file_name=>$file_name) .
3817                       qq!" />\n!;
3818         }
3819         close $fd
3820                 or print "Reading blob failed.\n";
3821         print "</div>";
3822         git_footer_html();
3823 }
3824
3825 sub git_tree {
3826         my $have_snapshot = gitweb_have_snapshot();
3827
3828         if (!defined $hash_base) {
3829                 $hash_base = "HEAD";
3830         }
3831         if (!defined $hash) {
3832                 if (defined $file_name) {
3833                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3834                 } else {
3835                         $hash = $hash_base;
3836                 }
3837         }
3838         $/ = "\0";
3839         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3840                 or die_error(undef, "Open git-ls-tree failed");
3841         my @entries = map { chomp; $_ } <$fd>;
3842         close $fd or die_error(undef, "Reading tree failed");
3843         $/ = "\n";
3844
3845         my $refs = git_get_references();
3846         my $ref = format_ref_marker($refs, $hash_base);
3847         git_header_html();
3848         my $basedir = '';
3849         my ($have_blame) = gitweb_check_feature('blame');
3850         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3851                 my @views_nav = ();
3852                 if (defined $file_name) {
3853                         push @views_nav,
3854                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3855                                                        hash=>$hash, file_name=>$file_name)},
3856                                         "history"),
3857                                 $cgi->a({-href => href(action=>"tree",
3858                                                        hash_base=>"HEAD", file_name=>$file_name)},
3859                                         "HEAD"),
3860                 }
3861                 if ($have_snapshot) {
3862                         # FIXME: Should be available when we have no hash base as well.
3863                         push @views_nav,
3864                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3865                                         "snapshot");
3866                 }
3867                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3868                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3869         } else {
3870                 undef $hash_base;
3871                 print "<div class=\"page_nav\">\n";
3872                 print "<br/><br/></div>\n";
3873                 print "<div class=\"title\">$hash</div>\n";
3874         }
3875         if (defined $file_name) {
3876                 $basedir = $file_name;
3877                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3878                         $basedir .= '/';
3879                 }
3880         }
3881         git_print_page_path($file_name, 'tree', $hash_base);
3882         print "<div class=\"page_body\">\n";
3883         print "<table cellspacing=\"0\">\n";
3884         my $alternate = 1;
3885         # '..' (top directory) link if possible
3886         if (defined $hash_base &&
3887             defined $file_name && $file_name =~ m![^/]+$!) {
3888                 if ($alternate) {
3889                         print "<tr class=\"dark\">\n";
3890                 } else {
3891                         print "<tr class=\"light\">\n";
3892                 }
3893                 $alternate ^= 1;
3894
3895                 my $up = $file_name;
3896                 $up =~ s!/?[^/]+$!!;
3897                 undef $up unless $up;
3898                 # based on git_print_tree_entry
3899                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3900                 print '<td class="list">';
3901                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3902                                              file_name=>$up)},
3903                               "..");
3904                 print "</td>\n";
3905                 print "<td class=\"link\"></td>\n";
3906
3907                 print "</tr>\n";
3908         }
3909         foreach my $line (@entries) {
3910                 my %t = parse_ls_tree_line($line, -z => 1);
3911
3912                 if ($alternate) {
3913                         print "<tr class=\"dark\">\n";
3914                 } else {
3915                         print "<tr class=\"light\">\n";
3916                 }
3917                 $alternate ^= 1;
3918
3919                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3920
3921                 print "</tr>\n";
3922         }
3923         print "</table>\n" .
3924               "</div>";
3925         git_footer_html();
3926 }
3927
3928 sub git_snapshot {
3929         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3930         my $have_snapshot = (defined $ctype && defined $suffix);
3931         if (!$have_snapshot) {
3932                 die_error('403 Permission denied', "Permission denied");
3933         }
3934
3935         if (!defined $hash) {
3936                 $hash = git_get_head_hash($project);
3937         }
3938
3939         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3940
3941         print $cgi->header(
3942                 -type => "application/$ctype",
3943                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3944                 -status => '200 OK');
3945
3946         my $git = git_cmd_str();
3947         my $name = $project;
3948         $name =~ s/\047/\047\\\047\047/g;
3949         open my $fd, "-|",
3950                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3951                 or die_error(undef, "Execute git-tar-tree failed");
3952         binmode STDOUT, ':raw';
3953         print <$fd>;
3954         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3955         close $fd;
3956
3957 }
3958
3959 sub git_log {
3960         my $head = git_get_head_hash($project);
3961         if (!defined $hash) {
3962                 $hash = $head;
3963         }
3964         if (!defined $page) {
3965                 $page = 0;
3966         }
3967         my $refs = git_get_references();
3968
3969         my @commitlist = parse_commits($hash, 101, (100 * $page));
3970
3971         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3972
3973         git_header_html();
3974         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3975
3976         if (!@commitlist) {
3977                 my %co = parse_commit($hash);
3978
3979                 git_print_header_div('summary', $project);
3980                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3981         }
3982         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3983         for (my $i = 0; $i <= $to; $i++) {
3984                 my %co = %{$commitlist[$i]};
3985                 next if !%co;
3986                 my $commit = $co{'id'};
3987                 my $ref = format_ref_marker($refs, $commit);
3988                 my %ad = parse_date($co{'author_epoch'});
3989                 git_print_header_div('commit',
3990                                "<span class=\"age\">$co{'age_string'}</span>" .
3991                                esc_html($co{'title'}) . $ref,
3992                                $commit);
3993                 print "<div class=\"title_text\">\n" .
3994                       "<div class=\"log_link\">\n" .
3995                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3996                       " | " .
3997                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3998                       " | " .
3999                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4000                       "<br/>\n" .
4001                       "</div>\n" .
4002                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4003                       "</div>\n";
4004
4005                 print "<div class=\"log_body\">\n";
4006                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4007                 print "</div>\n";
4008         }
4009         if ($#commitlist >= 100) {
4010                 print "<div class=\"page_nav\">\n";
4011                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4012                                -accesskey => "n", -title => "Alt-n"}, "next");
4013                 print "</div>\n";
4014         }
4015         git_footer_html();
4016 }
4017
4018 sub git_commit {
4019         $hash ||= $hash_base || "HEAD";
4020         my %co = parse_commit($hash);
4021         if (!%co) {
4022                 die_error(undef, "Unknown commit object");
4023         }
4024         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4025         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4026
4027         my $parent  = $co{'parent'};
4028         my $parents = $co{'parents'}; # listref
4029
4030         # we need to prepare $formats_nav before any parameter munging
4031         my $formats_nav;
4032         if (!defined $parent) {
4033                 # --root commitdiff
4034                 $formats_nav .= '(initial)';
4035         } elsif (@$parents == 1) {
4036                 # single parent commit
4037                 $formats_nav .=
4038                         '(parent: ' .
4039                         $cgi->a({-href => href(action=>"commit",
4040                                                hash=>$parent)},
4041                                 esc_html(substr($parent, 0, 7))) .
4042                         ')';
4043         } else {
4044                 # merge commit
4045                 $formats_nav .=
4046                         '(merge: ' .
4047                         join(' ', map {
4048                                 $cgi->a({-href => href(action=>"commit",
4049                                                        hash=>$_)},
4050                                         esc_html(substr($_, 0, 7)));
4051                         } @$parents ) .
4052                         ')';
4053         }
4054
4055         if (!defined $parent) {
4056                 $parent = "--root";
4057         }
4058         my @difftree;
4059         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4060                 @diff_opts,
4061                 (@$parents <= 1 ? $parent : '-c'),
4062                 $hash, "--"
4063                 or die_error(undef, "Open git-diff-tree failed");
4064         @difftree = map { chomp; $_ } <$fd>;
4065         close $fd or die_error(undef, "Reading git-diff-tree failed");
4066
4067         # non-textual hash id's can be cached
4068         my $expires;
4069         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4070                 $expires = "+1d";
4071         }
4072         my $refs = git_get_references();
4073         my $ref = format_ref_marker($refs, $co{'id'});
4074
4075         my $have_snapshot = gitweb_have_snapshot();
4076
4077         git_header_html(undef, $expires);
4078         git_print_page_nav('commit', '',
4079                            $hash, $co{'tree'}, $hash,
4080                            $formats_nav);
4081
4082         if (defined $co{'parent'}) {
4083                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4084         } else {
4085                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4086         }
4087         print "<div class=\"title_text\">\n" .
4088               "<table cellspacing=\"0\">\n";
4089         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4090               "<tr>" .
4091               "<td></td><td> $ad{'rfc2822'}";
4092         if ($ad{'hour_local'} < 6) {
4093                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4094                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4095         } else {
4096                 printf(" (%02d:%02d %s)",
4097                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4098         }
4099         print "</td>" .
4100               "</tr>\n";
4101         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4102         print "<tr><td></td><td> $cd{'rfc2822'}" .
4103               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4104               "</td></tr>\n";
4105         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4106         print "<tr>" .
4107               "<td>tree</td>" .
4108               "<td class=\"sha1\">" .
4109               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4110                        class => "list"}, $co{'tree'}) .
4111               "</td>" .
4112               "<td class=\"link\">" .
4113               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4114                       "tree");
4115         if ($have_snapshot) {
4116                 print " | " .
4117                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4118         }
4119         print "</td>" .
4120               "</tr>\n";
4121
4122         foreach my $par (@$parents) {
4123                 print "<tr>" .
4124                       "<td>parent</td>" .
4125                       "<td class=\"sha1\">" .
4126                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4127                                class => "list"}, $par) .
4128                       "</td>" .
4129                       "<td class=\"link\">" .
4130                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4131                       " | " .
4132                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4133                       "</td>" .
4134                       "</tr>\n";
4135         }
4136         print "</table>".
4137               "</div>\n";
4138
4139         print "<div class=\"page_body\">\n";
4140         git_print_log($co{'comment'});
4141         print "</div>\n";
4142
4143         git_difftree_body(\@difftree, $hash, @$parents);
4144
4145         git_footer_html();
4146 }
4147
4148 sub git_object {
4149         # object is defined by:
4150         # - hash or hash_base alone
4151         # - hash_base and file_name
4152         my $type;
4153
4154         # - hash or hash_base alone
4155         if ($hash || ($hash_base && !defined $file_name)) {
4156                 my $object_id = $hash || $hash_base;
4157
4158                 my $git_command = git_cmd_str();
4159                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4160                         or die_error('404 Not Found', "Object does not exist");
4161                 $type = <$fd>;
4162                 chomp $type;
4163                 close $fd
4164                         or die_error('404 Not Found', "Object does not exist");
4165
4166         # - hash_base and file_name
4167         } elsif ($hash_base && defined $file_name) {
4168                 $file_name =~ s,/+$,,;
4169
4170                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4171                         or die_error('404 Not Found', "Base object does not exist");
4172
4173                 # here errors should not hapen
4174                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4175                         or die_error(undef, "Open git-ls-tree failed");
4176                 my $line = <$fd>;
4177                 close $fd;
4178
4179                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4180                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4181                         die_error('404 Not Found', "File or directory for given base does not exist");
4182                 }
4183                 $type = $2;
4184                 $hash = $3;
4185         } else {
4186                 die_error('404 Not Found', "Not enough information to find object");
4187         }
4188
4189         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4190                                           hash=>$hash, hash_base=>$hash_base,
4191                                           file_name=>$file_name),
4192                              -status => '302 Found');
4193 }
4194
4195 sub git_blobdiff {
4196         my $format = shift || 'html';
4197
4198         my $fd;
4199         my @difftree;
4200         my %diffinfo;
4201         my $expires;
4202
4203         # preparing $fd and %diffinfo for git_patchset_body
4204         # new style URI
4205         if (defined $hash_base && defined $hash_parent_base) {
4206                 if (defined $file_name) {
4207                         # read raw output
4208                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4209                                 $hash_parent_base, $hash_base,
4210                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4211                                 or die_error(undef, "Open git-diff-tree failed");
4212                         @difftree = map { chomp; $_ } <$fd>;
4213                         close $fd
4214                                 or die_error(undef, "Reading git-diff-tree failed");
4215                         @difftree
4216                                 or die_error('404 Not Found', "Blob diff not found");
4217
4218                 } elsif (defined $hash &&
4219                          $hash =~ /[0-9a-fA-F]{40}/) {
4220                         # try to find filename from $hash
4221
4222                         # read filtered raw output
4223                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4224                                 $hash_parent_base, $hash_base, "--"
4225                                 or die_error(undef, "Open git-diff-tree failed");
4226                         @difftree =
4227                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4228                                 # $hash == to_id
4229                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4230                                 map { chomp; $_ } <$fd>;
4231                         close $fd
4232                                 or die_error(undef, "Reading git-diff-tree failed");
4233                         @difftree
4234                                 or die_error('404 Not Found', "Blob diff not found");
4235
4236                 } else {
4237                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4238                 }
4239
4240                 if (@difftree > 1) {
4241                         die_error('404 Not Found', "Ambiguous blob diff specification");
4242                 }
4243
4244                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4245                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4246                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4247
4248                 $hash_parent ||= $diffinfo{'from_id'};
4249                 $hash        ||= $diffinfo{'to_id'};
4250
4251                 # non-textual hash id's can be cached
4252                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4253                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4254                         $expires = '+1d';
4255                 }
4256
4257                 # open patch output
4258                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4259                         '-p', ($format eq 'html' ? "--full-index" : ()),
4260                         $hash_parent_base, $hash_base,
4261                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4262                         or die_error(undef, "Open git-diff-tree failed");
4263         }
4264
4265         # old/legacy style URI
4266         if (!%diffinfo && # if new style URI failed
4267             defined $hash && defined $hash_parent) {
4268                 # fake git-diff-tree raw output
4269                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4270                 $diffinfo{'from_id'} = $hash_parent;
4271                 $diffinfo{'to_id'}   = $hash;
4272                 if (defined $file_name) {
4273                         if (defined $file_parent) {
4274                                 $diffinfo{'status'} = '2';
4275                                 $diffinfo{'from_file'} = $file_parent;
4276                                 $diffinfo{'to_file'}   = $file_name;
4277                         } else { # assume not renamed
4278                                 $diffinfo{'status'} = '1';
4279                                 $diffinfo{'from_file'} = $file_name;
4280                                 $diffinfo{'to_file'}   = $file_name;
4281                         }
4282                 } else { # no filename given
4283                         $diffinfo{'status'} = '2';
4284                         $diffinfo{'from_file'} = $hash_parent;
4285                         $diffinfo{'to_file'}   = $hash;
4286                 }
4287
4288                 # non-textual hash id's can be cached
4289                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4290                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4291                         $expires = '+1d';
4292                 }
4293
4294                 # open patch output
4295                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4296                         '-p', ($format eq 'html' ? "--full-index" : ()),
4297                         $hash_parent, $hash, "--"
4298                         or die_error(undef, "Open git-diff failed");
4299         } else  {
4300                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4301                         unless %diffinfo;
4302         }
4303
4304         # header
4305         if ($format eq 'html') {
4306                 my $formats_nav =
4307                         $cgi->a({-href => href(action=>"blobdiff_plain",
4308                                                hash=>$hash, hash_parent=>$hash_parent,
4309                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4310                                                file_name=>$file_name, file_parent=>$file_parent)},
4311                                 "raw");
4312                 git_header_html(undef, $expires);
4313                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4314                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4315                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4316                 } else {
4317                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4318                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4319                 }
4320                 if (defined $file_name) {
4321                         git_print_page_path($file_name, "blob", $hash_base);
4322                 } else {
4323                         print "<div class=\"page_path\"></div>\n";
4324                 }
4325
4326         } elsif ($format eq 'plain') {
4327                 print $cgi->header(
4328                         -type => 'text/plain',
4329                         -charset => 'utf-8',
4330                         -expires => $expires,
4331                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4332
4333                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4334
4335         } else {
4336                 die_error(undef, "Unknown blobdiff format");
4337         }
4338
4339         # patch
4340         if ($format eq 'html') {
4341                 print "<div class=\"page_body\">\n";
4342
4343                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4344                 close $fd;
4345
4346                 print "</div>\n"; # class="page_body"
4347                 git_footer_html();
4348
4349         } else {
4350                 while (my $line = <$fd>) {
4351                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4352                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4353
4354                         print $line;
4355
4356                         last if $line =~ m!^\+\+\+!;
4357                 }
4358                 local $/ = undef;
4359                 print <$fd>;
4360                 close $fd;
4361         }
4362 }
4363
4364 sub git_blobdiff_plain {
4365         git_blobdiff('plain');
4366 }
4367
4368 sub git_commitdiff {
4369         my $format = shift || 'html';
4370         $hash ||= $hash_base || "HEAD";
4371         my %co = parse_commit($hash);
4372         if (!%co) {
4373                 die_error(undef, "Unknown commit object");
4374         }
4375
4376         # we need to prepare $formats_nav before any parameter munging
4377         my $formats_nav;
4378         if ($format eq 'html') {
4379                 $formats_nav =
4380                         $cgi->a({-href => href(action=>"commitdiff_plain",
4381                                                hash=>$hash, hash_parent=>$hash_parent)},
4382                                 "raw");
4383
4384                 if (defined $hash_parent) {
4385                         # commitdiff with two commits given
4386                         my $hash_parent_short = $hash_parent;
4387                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4388                                 $hash_parent_short = substr($hash_parent, 0, 7);
4389                         }
4390                         $formats_nav .=
4391                                 ' (from: ' .
4392                                 $cgi->a({-href => href(action=>"commitdiff",
4393                                                        hash=>$hash_parent)},
4394                                         esc_html($hash_parent_short)) .
4395                                 ')';
4396                 } elsif (!$co{'parent'}) {
4397                         # --root commitdiff
4398                         $formats_nav .= ' (initial)';
4399                 } elsif (scalar @{$co{'parents'}} == 1) {
4400                         # single parent commit
4401                         $formats_nav .=
4402                                 ' (parent: ' .
4403                                 $cgi->a({-href => href(action=>"commitdiff",
4404                                                        hash=>$co{'parent'})},
4405                                         esc_html(substr($co{'parent'}, 0, 7))) .
4406                                 ')';
4407                 } else {
4408                         # merge commit
4409                         $formats_nav .=
4410                                 ' (merge: ' .
4411                                 join(' ', map {
4412                                         $cgi->a({-href => href(action=>"commitdiff",
4413                                                                hash=>$_)},
4414                                                 esc_html(substr($_, 0, 7)));
4415                                 } @{$co{'parents'}} ) .
4416                                 ')';
4417                 }
4418         }
4419
4420         my $hash_parent_param = $hash_parent;
4421         if (!defined $hash_parent) {
4422                 $hash_parent_param =
4423                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4424         }
4425
4426         # read commitdiff
4427         my $fd;
4428         my @difftree;
4429         if ($format eq 'html') {
4430                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4431                         "--no-commit-id", "--patch-with-raw", "--full-index",
4432                         $hash_parent_param, $hash, "--"
4433                         or die_error(undef, "Open git-diff-tree failed");
4434
4435                 while (my $line = <$fd>) {
4436                         chomp $line;
4437                         # empty line ends raw part of diff-tree output
4438                         last unless $line;
4439                         push @difftree, scalar parse_difftree_raw_line($line);
4440                 }
4441
4442         } elsif ($format eq 'plain') {
4443                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4444                         '-p', $hash_parent_param, $hash, "--"
4445                         or die_error(undef, "Open git-diff-tree failed");
4446
4447         } else {
4448                 die_error(undef, "Unknown commitdiff format");
4449         }
4450
4451         # non-textual hash id's can be cached
4452         my $expires;
4453         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4454                 $expires = "+1d";
4455         }
4456
4457         # write commit message
4458         if ($format eq 'html') {
4459                 my $refs = git_get_references();
4460                 my $ref = format_ref_marker($refs, $co{'id'});
4461
4462                 git_header_html(undef, $expires);
4463                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4464                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4465                 git_print_authorship(\%co);
4466                 print "<div class=\"page_body\">\n";
4467                 if (@{$co{'comment'}} > 1) {
4468                         print "<div class=\"log\">\n";
4469                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4470                         print "</div>\n"; # class="log"
4471                 }
4472
4473         } elsif ($format eq 'plain') {
4474                 my $refs = git_get_references("tags");
4475                 my $tagname = git_get_rev_name_tags($hash);
4476                 my $filename = basename($project) . "-$hash.patch";
4477
4478                 print $cgi->header(
4479                         -type => 'text/plain',
4480                         -charset => 'utf-8',
4481                         -expires => $expires,
4482                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4483                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4484                 print <<TEXT;
4485 From: $co{'author'}
4486 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4487 Subject: $co{'title'}
4488 TEXT
4489                 print "X-Git-Tag: $tagname\n" if $tagname;
4490                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4491
4492                 foreach my $line (@{$co{'comment'}}) {
4493                         print "$line\n";
4494                 }
4495                 print "---\n\n";
4496         }
4497
4498         # write patch
4499         if ($format eq 'html') {
4500                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4501                 print "<br/>\n";
4502
4503                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4504                 close $fd;
4505                 print "</div>\n"; # class="page_body"
4506                 git_footer_html();
4507
4508         } elsif ($format eq 'plain') {
4509                 local $/ = undef;
4510                 print <$fd>;
4511                 close $fd
4512                         or print "Reading git-diff-tree failed\n";
4513         }
4514 }
4515
4516 sub git_commitdiff_plain {
4517         git_commitdiff('plain');
4518 }
4519
4520 sub git_history {
4521         if (!defined $hash_base) {
4522                 $hash_base = git_get_head_hash($project);
4523         }
4524         if (!defined $page) {
4525                 $page = 0;
4526         }
4527         my $ftype;
4528         my %co = parse_commit($hash_base);
4529         if (!%co) {
4530                 die_error(undef, "Unknown commit object");
4531         }
4532
4533         my $refs = git_get_references();
4534         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4535
4536         if (!defined $hash && defined $file_name) {
4537                 $hash = git_get_hash_by_path($hash_base, $file_name);
4538         }
4539         if (defined $hash) {
4540                 $ftype = git_get_type($hash);
4541         }
4542
4543         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4544
4545         my $paging_nav = '';
4546         if ($page > 0) {
4547                 $paging_nav .=
4548                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4549                                                file_name=>$file_name)},
4550                                 "first");
4551                 $paging_nav .= " &sdot; " .
4552                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4553                                                file_name=>$file_name, page=>$page-1),
4554                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4555         } else {
4556                 $paging_nav .= "first";
4557                 $paging_nav .= " &sdot; prev";
4558         }
4559         if ($#commitlist >= 100) {
4560                 $paging_nav .= " &sdot; " .
4561                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4562                                                file_name=>$file_name, page=>$page+1),
4563                                  -accesskey => "n", -title => "Alt-n"}, "next");
4564         } else {
4565                 $paging_nav .= " &sdot; next";
4566         }
4567         my $next_link = '';
4568         if ($#commitlist >= 100) {
4569                 $next_link =
4570                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4571                                                file_name=>$file_name, page=>$page+1),
4572                                  -accesskey => "n", -title => "Alt-n"}, "next");
4573         }
4574
4575         git_header_html();
4576         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4577         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4578         git_print_page_path($file_name, $ftype, $hash_base);
4579
4580         git_history_body(\@commitlist, 0, 99,
4581                          $refs, $hash_base, $ftype, $next_link);
4582
4583         git_footer_html();
4584 }
4585
4586 sub git_search {
4587         my ($have_search) = gitweb_check_feature('search');
4588         if (!$have_search) {
4589                 die_error('403 Permission denied', "Permission denied");
4590         }
4591         if (!defined $searchtext) {
4592                 die_error(undef, "Text field empty");
4593         }
4594         if (!defined $hash) {
4595                 $hash = git_get_head_hash($project);
4596         }
4597         my %co = parse_commit($hash);
4598         if (!%co) {
4599                 die_error(undef, "Unknown commit object");
4600         }
4601         if (!defined $page) {
4602                 $page = 0;
4603         }
4604
4605         $searchtype ||= 'commit';
4606         if ($searchtype eq 'pickaxe') {
4607                 # pickaxe may take all resources of your box and run for several minutes
4608                 # with every query - so decide by yourself how public you make this feature
4609                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4610                 if (!$have_pickaxe) {
4611                         die_error('403 Permission denied', "Permission denied");
4612                 }
4613         }
4614
4615         git_header_html();
4616
4617         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4618                 my $greptype;
4619                 if ($searchtype eq 'commit') {
4620                         $greptype = "--grep=";
4621                 } elsif ($searchtype eq 'author') {
4622                         $greptype = "--author=";
4623                 } elsif ($searchtype eq 'committer') {
4624                         $greptype = "--committer=";
4625                 }
4626                 $greptype .= $searchtext;
4627                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4628
4629                 my $paging_nav = '';
4630                 if ($page > 0) {
4631                         $paging_nav .=
4632                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4633                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4634                                         "first");
4635                         $paging_nav .= " &sdot; " .
4636                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4637                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4638                                                        page=>$page-1),
4639                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4640                 } else {
4641                         $paging_nav .= "first";
4642                         $paging_nav .= " &sdot; prev";
4643                 }
4644                 if ($#commitlist >= 100) {
4645                         $paging_nav .= " &sdot; " .
4646                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4647                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4648                                                        page=>$page+1),
4649                                          -accesskey => "n", -title => "Alt-n"}, "next");
4650                 } else {
4651                         $paging_nav .= " &sdot; next";
4652                 }
4653                 my $next_link = '';
4654                 if ($#commitlist >= 100) {
4655                         $next_link =
4656                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4657                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4658                                                        page=>$page+1),
4659                                          -accesskey => "n", -title => "Alt-n"}, "next");
4660                 }
4661
4662                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4663                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4664                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4665         }
4666
4667         if ($searchtype eq 'pickaxe') {
4668                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4669                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4670
4671                 print "<table cellspacing=\"0\">\n";
4672                 my $alternate = 1;
4673                 $/ = "\n";
4674                 my $git_command = git_cmd_str();
4675                 open my $fd, "-|", "$git_command rev-list $hash | " .
4676                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4677                 undef %co;
4678                 my @files;
4679                 while (my $line = <$fd>) {
4680                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4681                                 my %set;
4682                                 $set{'file'} = $6;
4683                                 $set{'from_id'} = $3;
4684                                 $set{'to_id'} = $4;
4685                                 $set{'id'} = $set{'to_id'};
4686                                 if ($set{'id'} =~ m/0{40}/) {
4687                                         $set{'id'} = $set{'from_id'};
4688                                 }
4689                                 if ($set{'id'} =~ m/0{40}/) {
4690                                         next;
4691                                 }
4692                                 push @files, \%set;
4693                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4694                                 if (%co) {
4695                                         if ($alternate) {
4696                                                 print "<tr class=\"dark\">\n";
4697                                         } else {
4698                                                 print "<tr class=\"light\">\n";
4699                                         }
4700                                         $alternate ^= 1;
4701                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4702                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4703                                               "<td>" .
4704                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4705                                                       -class => "list subject"},
4706                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4707                                         while (my $setref = shift @files) {
4708                                                 my %set = %$setref;
4709                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4710                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4711                                                               -class => "list"},
4712                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4713                                                       "<br/>\n";
4714                                         }
4715                                         print "</td>\n" .
4716                                               "<td class=\"link\">" .
4717                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4718                                               " | " .
4719                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4720                                         print "</td>\n" .
4721                                               "</tr>\n";
4722                                 }
4723                                 %co = parse_commit($1);
4724                         }
4725                 }
4726                 close $fd;
4727
4728                 print "</table>\n";
4729         }
4730         git_footer_html();
4731 }
4732
4733 sub git_search_help {
4734         git_header_html();
4735         git_print_page_nav('','', $hash,$hash,$hash);
4736         print <<EOT;
4737 <dl>
4738 <dt><b>commit</b></dt>
4739 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4740 <dt><b>author</b></dt>
4741 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4742 <dt><b>committer</b></dt>
4743 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4744 EOT
4745         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4746         if ($have_pickaxe) {
4747                 print <<EOT;
4748 <dt><b>pickaxe</b></dt>
4749 <dd>All commits that caused the string to appear or disappear from any file (changes that
4750 added, removed or "modified" the string) will be listed. This search can take a while and
4751 takes a lot of strain on the server, so please use it wisely.</dd>
4752 EOT
4753         }
4754         print "</dl>\n";
4755         git_footer_html();
4756 }
4757
4758 sub git_shortlog {
4759         my $head = git_get_head_hash($project);
4760         if (!defined $hash) {
4761                 $hash = $head;
4762         }
4763         if (!defined $page) {
4764                 $page = 0;
4765         }
4766         my $refs = git_get_references();
4767
4768         my @commitlist = parse_commits($hash, 101, (100 * $page));
4769
4770         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4771         my $next_link = '';
4772         if ($#commitlist >= 100) {
4773                 $next_link =
4774                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4775                                  -accesskey => "n", -title => "Alt-n"}, "next");
4776         }
4777
4778         git_header_html();
4779         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4780         git_print_header_div('summary', $project);
4781
4782         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4783
4784         git_footer_html();
4785 }
4786
4787 ## ......................................................................
4788 ## feeds (RSS, Atom; OPML)
4789
4790 sub git_feed {
4791         my $format = shift || 'atom';
4792         my ($have_blame) = gitweb_check_feature('blame');
4793
4794         # Atom: http://www.atomenabled.org/developers/syndication/
4795         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4796         if ($format ne 'rss' && $format ne 'atom') {
4797                 die_error(undef, "Unknown web feed format");
4798         }
4799
4800         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4801         my $head = $hash || 'HEAD';
4802         my @commitlist = parse_commits($head, 150);
4803
4804         my %latest_commit;
4805         my %latest_date;
4806         my $content_type = "application/$format+xml";
4807         if (defined $cgi->http('HTTP_ACCEPT') &&
4808                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4809                 # browser (feed reader) prefers text/xml
4810                 $content_type = 'text/xml';
4811         }
4812         if (defined($commitlist[0])) {
4813                 %latest_commit = %{$commitlist[0]};
4814                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4815                 print $cgi->header(
4816                         -type => $content_type,
4817                         -charset => 'utf-8',
4818                         -last_modified => $latest_date{'rfc2822'});
4819         } else {
4820                 print $cgi->header(
4821                         -type => $content_type,
4822                         -charset => 'utf-8');
4823         }
4824
4825         # Optimization: skip generating the body if client asks only
4826         # for Last-Modified date.
4827         return if ($cgi->request_method() eq 'HEAD');
4828
4829         # header variables
4830         my $title = "$site_name - $project/$action";
4831         my $feed_type = 'log';
4832         if (defined $hash) {
4833                 $title .= " - '$hash'";
4834                 $feed_type = 'branch log';
4835                 if (defined $file_name) {
4836                         $title .= " :: $file_name";
4837                         $feed_type = 'history';
4838                 }
4839         } elsif (defined $file_name) {
4840                 $title .= " - $file_name";
4841                 $feed_type = 'history';
4842         }
4843         $title .= " $feed_type";
4844         my $descr = git_get_project_description($project);
4845         if (defined $descr) {
4846                 $descr = esc_html($descr);
4847         } else {
4848                 $descr = "$project " .
4849                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4850                          " feed";
4851         }
4852         my $owner = git_get_project_owner($project);
4853         $owner = esc_html($owner);
4854
4855         #header
4856         my $alt_url;
4857         if (defined $file_name) {
4858                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4859         } elsif (defined $hash) {
4860                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4861         } else {
4862                 $alt_url = href(-full=>1, action=>"summary");
4863         }
4864         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4865         if ($format eq 'rss') {
4866                 print <<XML;
4867 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4868 <channel>
4869 XML
4870                 print "<title>$title</title>\n" .
4871                       "<link>$alt_url</link>\n" .
4872                       "<description>$descr</description>\n" .
4873                       "<language>en</language>\n";
4874         } elsif ($format eq 'atom') {
4875                 print <<XML;
4876 <feed xmlns="http://www.w3.org/2005/Atom">
4877 XML
4878                 print "<title>$title</title>\n" .
4879                       "<subtitle>$descr</subtitle>\n" .
4880                       '<link rel="alternate" type="text/html" href="' .
4881                       $alt_url . '" />' . "\n" .
4882                       '<link rel="self" type="' . $content_type . '" href="' .
4883                       $cgi->self_url() . '" />' . "\n" .
4884                       "<id>" . href(-full=>1) . "</id>\n" .
4885                       # use project owner for feed author
4886                       "<author><name>$owner</name></author>\n";
4887                 if (defined $favicon) {
4888                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4889                 }
4890                 if (defined $logo_url) {
4891                         # not twice as wide as tall: 72 x 27 pixels
4892                         print "<logo>" . esc_url($logo) . "</logo>\n";
4893                 }
4894                 if (! %latest_date) {
4895                         # dummy date to keep the feed valid until commits trickle in:
4896                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4897                 } else {
4898                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4899                 }
4900         }
4901
4902         # contents
4903         for (my $i = 0; $i <= $#commitlist; $i++) {
4904                 my %co = %{$commitlist[$i]};
4905                 my $commit = $co{'id'};
4906                 # we read 150, we always show 30 and the ones more recent than 48 hours
4907                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4908                         last;
4909                 }
4910                 my %cd = parse_date($co{'author_epoch'});
4911
4912                 # get list of changed files
4913                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4914                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4915                         or next;
4916                 my @difftree = map { chomp; $_ } <$fd>;
4917                 close $fd
4918                         or next;
4919
4920                 # print element (entry, item)
4921                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4922                 if ($format eq 'rss') {
4923                         print "<item>\n" .
4924                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4925                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4926                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4927                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4928                               "<link>$co_url</link>\n" .
4929                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4930                               "<content:encoded>" .
4931                               "<![CDATA[\n";
4932                 } elsif ($format eq 'atom') {
4933                         print "<entry>\n" .
4934                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4935                               "<updated>$cd{'iso-8601'}</updated>\n" .
4936                               "<author>\n" .
4937                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4938                         if ($co{'author_email'}) {
4939                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4940                         }
4941                         print "</author>\n" .
4942                               # use committer for contributor
4943                               "<contributor>\n" .
4944                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4945                         if ($co{'committer_email'}) {
4946                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4947                         }
4948                         print "</contributor>\n" .
4949                               "<published>$cd{'iso-8601'}</published>\n" .
4950                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4951                               "<id>$co_url</id>\n" .
4952                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4953                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4954                 }
4955                 my $comment = $co{'comment'};
4956                 print "<pre>\n";
4957                 foreach my $line (@$comment) {
4958                         $line = esc_html($line);
4959                         print "$line\n";
4960                 }
4961                 print "</pre><ul>\n";
4962                 foreach my $difftree_line (@difftree) {
4963                         my %difftree = parse_difftree_raw_line($difftree_line);
4964                         next if !$difftree{'from_id'};
4965
4966                         my $file = $difftree{'file'} || $difftree{'to_file'};
4967
4968                         print "<li>" .
4969                               "[" .
4970                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4971                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4972                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4973                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4974                                       -title => "diff"}, 'D');
4975                         if ($have_blame) {
4976                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4977                                                              file_name=>$file, hash_base=>$commit),
4978                                               -title => "blame"}, 'B');
4979                         }
4980                         # if this is not a feed of a file history
4981                         if (!defined $file_name || $file_name ne $file) {
4982                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4983                                                              file_name=>$file, hash=>$commit),
4984                                               -title => "history"}, 'H');
4985                         }
4986                         $file = esc_path($file);
4987                         print "] ".
4988                               "$file</li>\n";
4989                 }
4990                 if ($format eq 'rss') {
4991                         print "</ul>]]>\n" .
4992                               "</content:encoded>\n" .
4993                               "</item>\n";
4994                 } elsif ($format eq 'atom') {
4995                         print "</ul>\n</div>\n" .
4996                               "</content>\n" .
4997                               "</entry>\n";
4998                 }
4999         }
5000
5001         # end of feed
5002         if ($format eq 'rss') {
5003                 print "</channel>\n</rss>\n";
5004         }       elsif ($format eq 'atom') {
5005                 print "</feed>\n";
5006         }
5007 }
5008
5009 sub git_rss {
5010         git_feed('rss');
5011 }
5012
5013 sub git_atom {
5014         git_feed('atom');
5015 }
5016
5017 sub git_opml {
5018         my @list = git_get_projects_list();
5019
5020         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5021         print <<XML;
5022 <?xml version="1.0" encoding="utf-8"?>
5023 <opml version="1.0">
5024 <head>
5025   <title>$site_name OPML Export</title>
5026 </head>
5027 <body>
5028 <outline text="git RSS feeds">
5029 XML
5030
5031         foreach my $pr (@list) {
5032                 my %proj = %$pr;
5033                 my $head = git_get_head_hash($proj{'path'});
5034                 if (!defined $head) {
5035                         next;
5036                 }
5037                 $git_dir = "$projectroot/$proj{'path'}";
5038                 my %co = parse_commit($head);
5039                 if (!%co) {
5040                         next;
5041                 }
5042
5043                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5044                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5045                 my $html = "$my_url?p=$proj{'path'};a=summary";
5046                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5047         }
5048         print <<XML;
5049 </outline>
5050 </body>
5051 </opml>
5052 XML
5053 }