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 $project) {
 463         $action ||= 'summary';
 464 } else {
 465         $action ||= 'project_list';
 466 }
 467 if (!defined($actions{$action})) {
 468         die_error(undef, "Unknown action");
 469 }
 470 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 471     !$project) {
 472         die_error(undef, "Project needed");
 473 }
 474 $actions{$action}->();
 475 exit;
 476
 477 ## ======================================================================
 478 ## action links
 479
 480 sub href(%) {
 481         my %params = @_;
 482         # default is to use -absolute url() i.e. $my_uri
 483         my $href = $params{-full} ? $my_url : $my_uri;
 484
 485         # XXX: Warning: If you touch this, check the search form for updating,
 486         # too.
 487
 488         my @mapping = (
 489                 project => "p",
 490                 action => "a",
 491                 file_name => "f",
 492                 file_parent => "fp",
 493                 hash => "h",
 494                 hash_parent => "hp",
 495                 hash_base => "hb",
 496                 hash_parent_base => "hpb",
 497                 page => "pg",
 498                 order => "o",
 499                 searchtext => "s",
 500                 searchtype => "st",
 501         );
 502         my %mapping = @mapping;
 503
 504         $params{'project'} = $project unless exists $params{'project'};
 505
 506         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 507         if ($use_pathinfo) {
 508                 # use PATH_INFO for project name
 509                 $href .= "/$params{'project'}" if defined $params{'project'};
 510                 delete $params{'project'};
 511
 512                 # Summary just uses the project path URL
 513                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 514                         delete $params{'action'};
 515                 }
 516         }
 517
 518         # now encode the parameters explicitly
 519         my @result = ();
 520         for (my $i = 0; $i < @mapping; $i += 2) {
 521                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 522                 if (defined $params{$name}) {
 523                         push @result, $symbol . "=" . esc_param($params{$name});
 524                 }
 525         }
 526         $href .= "?" . join(';', @result) if scalar @result;
 527
 528         return $href;
 529 }
 530
 531
 532 ## ======================================================================
 533 ## validation, quoting/unquoting and escaping
 534
 535 sub validate_pathname {
 536         my $input = shift || return undef;
 537
 538         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 539         # at the beginning, at the end, and between slashes.
 540         # also this catches doubled slashes
 541         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 542                 return undef;
 543         }
 544         # no null characters
 545         if ($input =~ m!\0!) {
 546                 return undef;
 547         }
 548         return $input;
 549 }
 550
 551 sub validate_refname {
 552         my $input = shift || return undef;
 553
 554         # textual hashes are O.K.
 555         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 556                 return $input;
 557         }
 558         # it must be correct pathname
 559         $input = validate_pathname($input)
 560                 or return undef;
 561         # restrictions on ref name according to git-check-ref-format
 562         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 563                 return undef;
 564         }
 565         return $input;
 566 }
 567
 568 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 569 sub to_utf8 {
 570         my $str = shift;
 571         return decode("utf8", $str, Encode::FB_DEFAULT);
 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         $str = to_utf8($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         $str = to_utf8($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 $age = shift;
 731
 732         if ($age < 60*60*2) {
 733                 return "age0";
 734         } elsif ($age < 60*60*24*2) {
 735                 return "age1";
 736         } else {
 737                 return "age2";
 738         }
 739 }
 740
 741 # convert age in seconds to "nn units ago" string
 742 sub age_string {
 743         my $age = shift;
 744         my $age_str;
 745
 746         if ($age > 60*60*24*365*2) {
 747                 $age_str = (int $age/60/60/24/365);
 748                 $age_str .= " years ago";
 749         } elsif ($age > 60*60*24*(365/12)*2) {
 750                 $age_str = int $age/60/60/24/(365/12);
 751                 $age_str .= " months ago";
 752         } elsif ($age > 60*60*24*7*2) {
 753                 $age_str = int $age/60/60/24/7;
 754                 $age_str .= " weeks ago";
 755         } elsif ($age > 60*60*24*2) {
 756                 $age_str = int $age/60/60/24;
 757                 $age_str .= " days ago";
 758         } elsif ($age > 60*60*2) {
 759                 $age_str = int $age/60/60;
 760                 $age_str .= " hours ago";
 761         } elsif ($age > 60*2) {
 762                 $age_str = int $age/60;
 763                 $age_str .= " min ago";
 764         } elsif ($age > 2) {
 765                 $age_str = int $age;
 766                 $age_str .= " sec ago";
 767         } else {
 768                 $age_str .= " right now";
 769         }
 770         return $age_str;
 771 }
 772
 773 # convert file mode in octal to symbolic file mode string
 774 sub mode_str {
 775         my $mode = oct shift;
 776
 777         if (S_ISDIR($mode & S_IFMT)) {
 778                 return 'drwxr-xr-x';
 779         } elsif (S_ISLNK($mode)) {
 780                 return 'lrwxrwxrwx';
 781         } elsif (S_ISREG($mode)) {
 782                 # git cares only about the executable bit
 783                 if ($mode & S_IXUSR) {
 784                         return '-rwxr-xr-x';
 785                 } else {
 786                         return '-rw-r--r--';
 787                 };
 788         } else {
 789                 return '----------';
 790         }
 791 }
 792
 793 # convert file mode in octal to file type string
 794 sub file_type {
 795         my $mode = shift;
 796
 797         if ($mode !~ m/^[0-7]+$/) {
 798                 return $mode;
 799         } else {
 800                 $mode = oct $mode;
 801         }
 802
 803         if (S_ISDIR($mode & S_IFMT)) {
 804                 return "directory";
 805         } elsif (S_ISLNK($mode)) {
 806                 return "symlink";
 807         } elsif (S_ISREG($mode)) {
 808                 return "file";
 809         } else {
 810                 return "unknown";
 811         }
 812 }
 813
 814 # convert file mode in octal to file type description string
 815 sub file_type_long {
 816         my $mode = shift;
 817
 818         if ($mode !~ m/^[0-7]+$/) {
 819                 return $mode;
 820         } else {
 821                 $mode = oct $mode;
 822         }
 823
 824         if (S_ISDIR($mode & S_IFMT)) {
 825                 return "directory";
 826         } elsif (S_ISLNK($mode)) {
 827                 return "symlink";
 828         } elsif (S_ISREG($mode)) {
 829                 if ($mode & S_IXUSR) {
 830                         return "executable";
 831                 } else {
 832                         return "file";
 833                 };
 834         } else {
 835                 return "unknown";
 836         }
 837 }
 838
 839
 840 ## ----------------------------------------------------------------------
 841 ## functions returning short HTML fragments, or transforming HTML fragments
 842 ## which don't belong to other sections
 843
 844 # format line of commit message.
 845 sub format_log_line_html {
 846         my $line = shift;
 847
 848         $line = esc_html($line, -nbsp=>1);
 849         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 850                 my $hash_text = $1;
 851                 my $link =
 852                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 853                                 -class => "text"}, $hash_text);
 854                 $line =~ s/$hash_text/$link/;
 855         }
 856         return $line;
 857 }
 858
 859 # format marker of refs pointing to given object
 860 sub format_ref_marker {
 861         my ($refs, $id) = @_;
 862         my $markers = '';
 863
 864         if (defined $refs->{$id}) {
 865                 foreach my $ref (@{$refs->{$id}}) {
 866                         my ($type, $name) = qw();
 867                         # e.g. tags/v2.6.11 or heads/next
 868                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 869                                 $type = $1;
 870                                 $name = $2;
 871                         } else {
 872                                 $type = "ref";
 873                                 $name = $ref;
 874                         }
 875
 876                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 877                                     esc_html($name) . "</span>";
 878                 }
 879         }
 880
 881         if ($markers) {
 882                 return ' <span class="refs">'. $markers . '</span>';
 883         } else {
 884                 return "";
 885         }
 886 }
 887
 888 # format, perhaps shortened and with markers, title line
 889 sub format_subject_html {
 890         my ($long, $short, $href, $extra) = @_;
 891         $extra = '' unless defined($extra);
 892
 893         if (length($short) < length($long)) {
 894                 return $cgi->a({-href => $href, -class => "list subject",
 895                                 -title => to_utf8($long)},
 896                        esc_html($short) . $extra);
 897         } else {
 898                 return $cgi->a({-href => $href, -class => "list subject"},
 899                        esc_html($long)  . $extra);
 900         }
 901 }
 902
 903 # format patch (diff) line (rather not to be used for diff headers)
 904 sub format_diff_line {
 905         my $line = shift;
 906         my ($from, $to) = @_;
 907         my $char = substr($line, 0, 1);
 908         my $diff_class = "";
 909
 910         chomp $line;
 911
 912         if ($char eq '+') {
 913                 $diff_class = " add";
 914         } elsif ($char eq "-") {
 915                 $diff_class = " rem";
 916         } elsif ($char eq "@") {
 917                 $diff_class = " chunk_header";
 918         } elsif ($char eq "\\") {
 919                 $diff_class = " incomplete";
 920         }
 921         $line = untabify($line);
 922         if ($from && $to && $line =~ m/^\@{2} /) {
 923                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 924                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 925
 926                 $from_lines = 0 unless defined $from_lines;
 927                 $to_lines   = 0 unless defined $to_lines;
 928
 929                 if ($from->{'href'}) {
 930                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 931                                              -class=>"list"}, $from_text);
 932                 }
 933                 if ($to->{'href'}) {
 934                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 935                                              -class=>"list"}, $to_text);
 936                 }
 937                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 938                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 939                 return "<div class=\"diff$diff_class\">$line</div>\n";
 940         }
 941         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 942 }
 943
 944 ## ----------------------------------------------------------------------
 945 ## git utility subroutines, invoking git commands
 946
 947 # returns path to the core git executable and the --git-dir parameter as list
 948 sub git_cmd {
 949         return $GIT, '--git-dir='.$git_dir;
 950 }
 951
 952 # returns path to the core git executable and the --git-dir parameter as string
 953 sub git_cmd_str {
 954         return join(' ', git_cmd());
 955 }
 956
 957 # get HEAD ref of given project as hash
 958 sub git_get_head_hash {
 959         my $project = shift;
 960         my $o_git_dir = $git_dir;
 961         my $retval = undef;
 962         $git_dir = "$projectroot/$project";
 963         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 964                 my $head = <$fd>;
 965                 close $fd;
 966                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 967                         $retval = $1;
 968                 }
 969         }
 970         if (defined $o_git_dir) {
 971                 $git_dir = $o_git_dir;
 972         }
 973         return $retval;
 974 }
 975
 976 # get type of given object
 977 sub git_get_type {
 978         my $hash = shift;
 979
 980         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 981         my $type = <$fd>;
 982         close $fd or return;
 983         chomp $type;
 984         return $type;
 985 }
 986
 987 sub git_get_project_config {
 988         my ($key, $type) = @_;
 989
 990         return unless ($key);
 991         $key =~ s/^gitweb\.//;
 992         return if ($key =~ m/\W/);
 993
 994         my @x = (git_cmd(), 'config');
 995         if (defined $type) { push @x, $type; }
 996         push @x, "--get";
 997         push @x, "gitweb.$key";
 998         my $val = qx(@x);
 999         chomp $val;
1000         return ($val);
1001 }
1002
1003 # get hash of given path at given ref
1004 sub git_get_hash_by_path {
1005         my $base = shift;
1006         my $path = shift || return undef;
1007         my $type = shift;
1008
1009         $path =~ s,/+$,,;
1010
1011         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1012                 or die_error(undef, "Open git-ls-tree failed");
1013         my $line = <$fd>;
1014         close $fd or return undef;
1015
1016         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1017         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1018         if (defined $type && $type ne $2) {
1019                 # type doesn't match
1020                 return undef;
1021         }
1022         return $3;
1023 }
1024
1025 ## ......................................................................
1026 ## git utility functions, directly accessing git repository
1027
1028 sub git_get_project_description {
1029         my $path = shift;
1030
1031         open my $fd, "$projectroot/$path/description" or return undef;
1032         my $descr = <$fd>;
1033         close $fd;
1034         chomp $descr;
1035         return $descr;
1036 }
1037
1038 sub git_get_project_url_list {
1039         my $path = shift;
1040
1041         open my $fd, "$projectroot/$path/cloneurl" or return;
1042         my @git_project_url_list = map { chomp; $_ } <$fd>;
1043         close $fd;
1044
1045         return wantarray ? @git_project_url_list : \@git_project_url_list;
1046 }
1047
1048 sub git_get_projects_list {
1049         my ($filter) = @_;
1050         my @list;
1051
1052         $filter ||= '';
1053         $filter =~ s/\.git$//;
1054
1055         my ($check_forks) = gitweb_check_feature('forks');
1056
1057         if (-d $projects_list) {
1058                 # search in directory
1059                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1060                 # remove the trailing "/"
1061                 $dir =~ s!/+$!!;
1062                 my $pfxlen = length("$dir");
1063
1064                 File::Find::find({
1065                         follow_fast => 1, # follow symbolic links
1066                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1067                         wanted => sub {
1068                                 # skip project-list toplevel, if we get it.
1069                                 return if (m!^[/.]$!);
1070                                 # only directories can be git repositories
1071                                 return unless (-d $_);
1072
1073                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1074                                 # we check related file in $projectroot
1075                                 if ($check_forks and $subdir =~ m#/.#) {
1076                                         $File::Find::prune = 1;
1077                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1078                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1079                                         $File::Find::prune = 1;
1080                                 }
1081                         },
1082                 }, "$dir");
1083
1084         } elsif (-f $projects_list) {
1085                 # read from file(url-encoded):
1086                 # 'git%2Fgit.git Linus+Torvalds'
1087                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1088                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1089                 my %paths;
1090                 open my ($fd), $projects_list or return;
1091         PROJECT:
1092                 while (my $line = <$fd>) {
1093                         chomp $line;
1094                         my ($path, $owner) = split ' ', $line;
1095                         $path = unescape($path);
1096                         $owner = unescape($owner);
1097                         if (!defined $path) {
1098                                 next;
1099                         }
1100                         if ($filter ne '') {
1101                                 # looking for forks;
1102                                 my $pfx = substr($path, 0, length($filter));
1103                                 if ($pfx ne $filter) {
1104                                         next PROJECT;
1105                                 }
1106                                 my $sfx = substr($path, length($filter));
1107                                 if ($sfx !~ /^\/.*\.git$/) {
1108                                         next PROJECT;
1109                                 }
1110                         } elsif ($check_forks) {
1111                         PATH:
1112                                 foreach my $filter (keys %paths) {
1113                                         # looking for forks;
1114                                         my $pfx = substr($path, 0, length($filter));
1115                                         if ($pfx ne $filter) {
1116                                                 next PATH;
1117                                         }
1118                                         my $sfx = substr($path, length($filter));
1119                                         if ($sfx !~ /^\/.*\.git$/) {
1120                                                 next PATH;
1121                                         }
1122                                         # is a fork, don't include it in
1123                                         # the list
1124                                         next PROJECT;
1125                                 }
1126                         }
1127                         if (check_export_ok("$projectroot/$path")) {
1128                                 my $pr = {
1129                                         path => $path,
1130                                         owner => to_utf8($owner),
1131                                 };
1132                                 push @list, $pr;
1133                                 (my $forks_path = $path) =~ s/\.git$//;
1134                                 $paths{$forks_path}++;
1135                         }
1136                 }
1137                 close $fd;
1138         }
1139         return @list;
1140 }
1141
1142 sub git_get_project_owner {
1143         my $project = shift;
1144         my $owner;
1145
1146         return undef unless $project;
1147
1148         # read from file (url-encoded):
1149         # 'git%2Fgit.git Linus+Torvalds'
1150         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1151         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1152         if (-f $projects_list) {
1153                 open (my $fd , $projects_list);
1154                 while (my $line = <$fd>) {
1155                         chomp $line;
1156                         my ($pr, $ow) = split ' ', $line;
1157                         $pr = unescape($pr);
1158                         $ow = unescape($ow);
1159                         if ($pr eq $project) {
1160                                 $owner = to_utf8($ow);
1161                                 last;
1162                         }
1163                 }
1164                 close $fd;
1165         }
1166         if (!defined $owner) {
1167                 $owner = get_file_owner("$projectroot/$project");
1168         }
1169
1170         return $owner;
1171 }
1172
1173 sub git_get_last_activity {
1174         my ($path) = @_;
1175         my $fd;
1176
1177         $git_dir = "$projectroot/$path";
1178         open($fd, "-|", git_cmd(), 'for-each-ref',
1179              '--format=%(committer)',
1180              '--sort=-committerdate',
1181              '--count=1',
1182              'refs/heads') or return;
1183         my $most_recent = <$fd>;
1184         close $fd or return;
1185         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1186                 my $timestamp = $1;
1187                 my $age = time - $timestamp;
1188                 return ($age, age_string($age));
1189         }
1190 }
1191
1192 sub git_get_references {
1193         my $type = shift || "";
1194         my %refs;
1195         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1196         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1197         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1198                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1199                 or return;
1200
1201         while (my $line = <$fd>) {
1202                 chomp $line;
1203                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1204                         if (defined $refs{$1}) {
1205                                 push @{$refs{$1}}, $2;
1206                         } else {
1207                                 $refs{$1} = [ $2 ];
1208                         }
1209                 }
1210         }
1211         close $fd or return;
1212         return \%refs;
1213 }
1214
1215 sub git_get_rev_name_tags {
1216         my $hash = shift || return undef;
1217
1218         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1219                 or return;
1220         my $name_rev = <$fd>;
1221         close $fd;
1222
1223         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1224                 return $1;
1225         } else {
1226                 # catches also '$hash undefined' output
1227                 return undef;
1228         }
1229 }
1230
1231 ## ----------------------------------------------------------------------
1232 ## parse to hash functions
1233
1234 sub parse_date {
1235         my $epoch = shift;
1236         my $tz = shift || "-0000";
1237
1238         my %date;
1239         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1240         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1241         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1242         $date{'hour'} = $hour;
1243         $date{'minute'} = $min;
1244         $date{'mday'} = $mday;
1245         $date{'day'} = $days[$wday];
1246         $date{'month'} = $months[$mon];
1247         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1248                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1249         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1250                              $mday, $months[$mon], $hour ,$min;
1251         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1252                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1253
1254         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1255         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1256         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1257         $date{'hour_local'} = $hour;
1258         $date{'minute_local'} = $min;
1259         $date{'tz_local'} = $tz;
1260         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1261                                   1900+$year, $mon+1, $mday,
1262                                   $hour, $min, $sec, $tz);
1263         return %date;
1264 }
1265
1266 sub parse_tag {
1267         my $tag_id = shift;
1268         my %tag;
1269         my @comment;
1270
1271         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1272         $tag{'id'} = $tag_id;
1273         while (my $line = <$fd>) {
1274                 chomp $line;
1275                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1276                         $tag{'object'} = $1;
1277                 } elsif ($line =~ m/^type (.+)$/) {
1278                         $tag{'type'} = $1;
1279                 } elsif ($line =~ m/^tag (.+)$/) {
1280                         $tag{'name'} = $1;
1281                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1282                         $tag{'author'} = $1;
1283                         $tag{'epoch'} = $2;
1284                         $tag{'tz'} = $3;
1285                 } elsif ($line =~ m/--BEGIN/) {
1286                         push @comment, $line;
1287                         last;
1288                 } elsif ($line eq "") {
1289                         last;
1290                 }
1291         }
1292         push @comment, <$fd>;
1293         $tag{'comment'} = \@comment;
1294         close $fd or return;
1295         if (!defined $tag{'name'}) {
1296                 return
1297         };
1298         return %tag
1299 }
1300
1301 sub parse_commit_text {
1302         my ($commit_text, $withparents) = @_;
1303         my @commit_lines = split '\n', $commit_text;
1304         my %co;
1305
1306         pop @commit_lines; # Remove '\0'
1307
1308         my $header = shift @commit_lines;
1309         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1310                 return;
1311         }
1312         ($co{'id'}, my @parents) = split ' ', $header;
1313         while (my $line = shift @commit_lines) {
1314                 last if $line eq "\n";
1315                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1316                         $co{'tree'} = $1;
1317                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1318                         push @parents, $1;
1319                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1320                         $co{'author'} = $1;
1321                         $co{'author_epoch'} = $2;
1322                         $co{'author_tz'} = $3;
1323                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1324                                 $co{'author_name'}  = $1;
1325                                 $co{'author_email'} = $2;
1326                         } else {
1327                                 $co{'author_name'} = $co{'author'};
1328                         }
1329                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1330                         $co{'committer'} = $1;
1331                         $co{'committer_epoch'} = $2;
1332                         $co{'committer_tz'} = $3;
1333                         $co{'committer_name'} = $co{'committer'};
1334                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1335                                 $co{'committer_name'}  = $1;
1336                                 $co{'committer_email'} = $2;
1337                         } else {
1338                                 $co{'committer_name'} = $co{'committer'};
1339                         }
1340                 }
1341         }
1342         if (!defined $co{'tree'}) {
1343                 return;
1344         };
1345         $co{'parents'} = \@parents;
1346         $co{'parent'} = $parents[0];
1347
1348         foreach my $title (@commit_lines) {
1349                 $title =~ s/^    //;
1350                 if ($title ne "") {
1351                         $co{'title'} = chop_str($title, 80, 5);
1352                         # remove leading stuff of merges to make the interesting part visible
1353                         if (length($title) > 50) {
1354                                 $title =~ s/^Automatic //;
1355                                 $title =~ s/^merge (of|with) /Merge ... /i;
1356                                 if (length($title) > 50) {
1357                                         $title =~ s/(http|rsync):\/\///;
1358                                 }
1359                                 if (length($title) > 50) {
1360                                         $title =~ s/(master|www|rsync)\.//;
1361                                 }
1362                                 if (length($title) > 50) {
1363                                         $title =~ s/kernel.org:?//;
1364                                 }
1365                                 if (length($title) > 50) {
1366                                         $title =~ s/\/pub\/scm//;
1367                                 }
1368                         }
1369                         $co{'title_short'} = chop_str($title, 50, 5);
1370                         last;
1371                 }
1372         }
1373         if ($co{'title'} eq "") {
1374                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1375         }
1376         # remove added spaces
1377         foreach my $line (@commit_lines) {
1378                 $line =~ s/^    //;
1379         }
1380         $co{'comment'} = \@commit_lines;
1381
1382         my $age = time - $co{'committer_epoch'};
1383         $co{'age'} = $age;
1384         $co{'age_string'} = age_string($age);
1385         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1386         if ($age > 60*60*24*7*2) {
1387                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1388                 $co{'age_string_age'} = $co{'age_string'};
1389         } else {
1390                 $co{'age_string_date'} = $co{'age_string'};
1391                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1392         }
1393         return %co;
1394 }
1395
1396 sub parse_commit {
1397         my ($commit_id) = @_;
1398         my %co;
1399
1400         local $/ = "\0";
1401
1402         open my $fd, "-|", git_cmd(), "rev-list",
1403                 "--parents",
1404                 "--header",
1405                 "--max-count=1",
1406                 $commit_id,
1407                 "--",
1408                 or die_error(undef, "Open git-rev-list failed");
1409         %co = parse_commit_text(<$fd>, 1);
1410         close $fd;
1411
1412         return %co;
1413 }
1414
1415 sub parse_commits {
1416         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1417         my @cos;
1418
1419         $maxcount ||= 1;
1420         $skip ||= 0;
1421
1422         local $/ = "\0";
1423
1424         open my $fd, "-|", git_cmd(), "rev-list",
1425                 "--header",
1426                 ($arg ? ($arg) : ()),
1427                 ("--max-count=" . $maxcount),
1428                 ("--skip=" . $skip),
1429                 $commit_id,
1430                 "--",
1431                 ($filename ? ($filename) : ())
1432                 or die_error(undef, "Open git-rev-list failed");
1433         while (my $line = <$fd>) {
1434                 my %co = parse_commit_text($line);
1435                 push @cos, \%co;
1436         }
1437         close $fd;
1438
1439         return wantarray ? @cos : \@cos;
1440 }
1441
1442 # parse ref from ref_file, given by ref_id, with given type
1443 sub parse_ref {
1444         my $ref_file = shift;
1445         my $ref_id = shift;
1446         my $type = shift || git_get_type($ref_id);
1447         my %ref_item;
1448
1449         $ref_item{'type'} = $type;
1450         $ref_item{'id'} = $ref_id;
1451         $ref_item{'epoch'} = 0;
1452         $ref_item{'age'} = "unknown";
1453         if ($type eq "tag") {
1454                 my %tag = parse_tag($ref_id);
1455                 $ref_item{'comment'} = $tag{'comment'};
1456                 if ($tag{'type'} eq "commit") {
1457                         my %co = parse_commit($tag{'object'});
1458                         $ref_item{'epoch'} = $co{'committer_epoch'};
1459                         $ref_item{'age'} = $co{'age_string'};
1460                 } elsif (defined($tag{'epoch'})) {
1461                         my $age = time - $tag{'epoch'};
1462                         $ref_item{'epoch'} = $tag{'epoch'};
1463                         $ref_item{'age'} = age_string($age);
1464                 }
1465                 $ref_item{'reftype'} = $tag{'type'};
1466                 $ref_item{'name'} = $tag{'name'};
1467                 $ref_item{'refid'} = $tag{'object'};
1468         } elsif ($type eq "commit"){
1469                 my %co = parse_commit($ref_id);
1470                 $ref_item{'reftype'} = "commit";
1471                 $ref_item{'name'} = $ref_file;
1472                 $ref_item{'title'} = $co{'title'};
1473                 $ref_item{'refid'} = $ref_id;
1474                 $ref_item{'epoch'} = $co{'committer_epoch'};
1475                 $ref_item{'age'} = $co{'age_string'};
1476         } else {
1477                 $ref_item{'reftype'} = $type;
1478                 $ref_item{'name'} = $ref_file;
1479                 $ref_item{'refid'} = $ref_id;
1480         }
1481
1482         return %ref_item;
1483 }
1484
1485 # parse line of git-diff-tree "raw" output
1486 sub parse_difftree_raw_line {
1487         my $line = shift;
1488         my %res;
1489
1490         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1491         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1492         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1493                 $res{'from_mode'} = $1;
1494                 $res{'to_mode'} = $2;
1495                 $res{'from_id'} = $3;
1496                 $res{'to_id'} = $4;
1497                 $res{'status'} = $5;
1498                 $res{'similarity'} = $6;
1499                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1500                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1501                 } else {
1502                         $res{'file'} = unquote($7);
1503                 }
1504         }
1505         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1506         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1507                 $res{'commit'} = $1;
1508         }
1509
1510         return wantarray ? %res : \%res;
1511 }
1512
1513 # parse line of git-ls-tree output
1514 sub parse_ls_tree_line ($;%) {
1515         my $line = shift;
1516         my %opts = @_;
1517         my %res;
1518
1519         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1520         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1521
1522         $res{'mode'} = $1;
1523         $res{'type'} = $2;
1524         $res{'hash'} = $3;
1525         if ($opts{'-z'}) {
1526                 $res{'name'} = $4;
1527         } else {
1528                 $res{'name'} = unquote($4);
1529         }
1530
1531         return wantarray ? %res : \%res;
1532 }
1533
1534 ## ......................................................................
1535 ## parse to array of hashes functions
1536
1537 sub git_get_heads_list {
1538         my $limit = shift;
1539         my @headslist;
1540
1541         open my $fd, '-|', git_cmd(), 'for-each-ref',
1542                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1543                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1544                 'refs/heads'
1545                 or return;
1546         while (my $line = <$fd>) {
1547                 my %ref_item;
1548
1549                 chomp $line;
1550                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1551                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1552                 my ($committer, $epoch, $tz) =
1553                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1554                 $name =~ s!^refs/heads/!!;
1555
1556                 $ref_item{'name'}  = $name;
1557                 $ref_item{'id'}    = $hash;
1558                 $ref_item{'title'} = $title || '(no commit message)';
1559                 $ref_item{'epoch'} = $epoch;
1560                 if ($epoch) {
1561                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1562                 } else {
1563                         $ref_item{'age'} = "unknown";
1564                 }
1565
1566                 push @headslist, \%ref_item;
1567         }
1568         close $fd;
1569
1570         return wantarray ? @headslist : \@headslist;
1571 }
1572
1573 sub git_get_tags_list {
1574         my $limit = shift;
1575         my @tagslist;
1576
1577         open my $fd, '-|', git_cmd(), 'for-each-ref',
1578                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1579                 '--format=%(objectname) %(objecttype) %(refname) '.
1580                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1581                 'refs/tags'
1582                 or return;
1583         while (my $line = <$fd>) {
1584                 my %ref_item;
1585
1586                 chomp $line;
1587                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1588                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1589                 my ($creator, $epoch, $tz) =
1590                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1591                 $name =~ s!^refs/tags/!!;
1592
1593                 $ref_item{'type'} = $type;
1594                 $ref_item{'id'} = $id;
1595                 $ref_item{'name'} = $name;
1596                 if ($type eq "tag") {
1597                         $ref_item{'subject'} = $title;
1598                         $ref_item{'reftype'} = $reftype;
1599                         $ref_item{'refid'}   = $refid;
1600                 } else {
1601                         $ref_item{'reftype'} = $type;
1602                         $ref_item{'refid'}   = $id;
1603                 }
1604
1605                 if ($type eq "tag" || $type eq "commit") {
1606                         $ref_item{'epoch'} = $epoch;
1607                         if ($epoch) {
1608                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1609                         } else {
1610                                 $ref_item{'age'} = "unknown";
1611                         }
1612                 }
1613
1614                 push @tagslist, \%ref_item;
1615         }
1616         close $fd;
1617
1618         return wantarray ? @tagslist : \@tagslist;
1619 }
1620
1621 ## ----------------------------------------------------------------------
1622 ## filesystem-related functions
1623
1624 sub get_file_owner {
1625         my $path = shift;
1626
1627         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1628         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1629         if (!defined $gcos) {
1630                 return undef;
1631         }
1632         my $owner = $gcos;
1633         $owner =~ s/[,;].*$//;
1634         return to_utf8($owner);
1635 }
1636
1637 ## ......................................................................
1638 ## mimetype related functions
1639
1640 sub mimetype_guess_file {
1641         my $filename = shift;
1642         my $mimemap = shift;
1643         -r $mimemap or return undef;
1644
1645         my %mimemap;
1646         open(MIME, $mimemap) or return undef;
1647         while (<MIME>) {
1648                 next if m/^#/; # skip comments
1649                 my ($mime, $exts) = split(/\t+/);
1650                 if (defined $exts) {
1651                         my @exts = split(/\s+/, $exts);
1652                         foreach my $ext (@exts) {
1653                                 $mimemap{$ext} = $mime;
1654                         }
1655                 }
1656         }
1657         close(MIME);
1658
1659         $filename =~ /\.([^.]*)$/;
1660         return $mimemap{$1};
1661 }
1662
1663 sub mimetype_guess {
1664         my $filename = shift;
1665         my $mime;
1666         $filename =~ /\./ or return undef;
1667
1668         if ($mimetypes_file) {
1669                 my $file = $mimetypes_file;
1670                 if ($file !~ m!^/!) { # if it is relative path
1671                         # it is relative to project
1672                         $file = "$projectroot/$project/$file";
1673                 }
1674                 $mime = mimetype_guess_file($filename, $file);
1675         }
1676         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1677         return $mime;
1678 }
1679
1680 sub blob_mimetype {
1681         my $fd = shift;
1682         my $filename = shift;
1683
1684         if ($filename) {
1685                 my $mime = mimetype_guess($filename);
1686                 $mime and return $mime;
1687         }
1688
1689         # just in case
1690         return $default_blob_plain_mimetype unless $fd;
1691
1692         if (-T $fd) {
1693                 return 'text/plain' .
1694                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1695         } elsif (! $filename) {
1696                 return 'application/octet-stream';
1697         } elsif ($filename =~ m/\.png$/i) {
1698                 return 'image/png';
1699         } elsif ($filename =~ m/\.gif$/i) {
1700                 return 'image/gif';
1701         } elsif ($filename =~ m/\.jpe?g$/i) {
1702                 return 'image/jpeg';
1703         } else {
1704                 return 'application/octet-stream';
1705         }
1706 }
1707
1708 ## ======================================================================
1709 ## functions printing HTML: header, footer, error page
1710
1711 sub git_header_html {
1712         my $status = shift || "200 OK";
1713         my $expires = shift;
1714
1715         my $title = "$site_name";
1716         if (defined $project) {
1717                 $title .= " - " . to_utf8($project);
1718                 if (defined $action) {
1719                         $title .= "/$action";
1720                         if (defined $file_name) {
1721                                 $title .= " - " . esc_path($file_name);
1722                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1723                                         $title .= "/";
1724                                 }
1725                         }
1726                 }
1727         }
1728         my $content_type;
1729         # require explicit support from the UA if we are to send the page as
1730         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1731         # we have to do this because MSIE sometimes globs '*/*', pretending to
1732         # support xhtml+xml but choking when it gets what it asked for.
1733         if (defined $cgi->http('HTTP_ACCEPT') &&
1734             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1735             $cgi->Accept('application/xhtml+xml') != 0) {
1736                 $content_type = 'application/xhtml+xml';
1737         } else {
1738                 $content_type = 'text/html';
1739         }
1740         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1741                            -status=> $status, -expires => $expires);
1742         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1743         print <<EOF;
1744 <?xml version="1.0" encoding="utf-8"?>
1745 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1746 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1747 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1748 <!-- git core binaries version $git_version -->
1749 <head>
1750 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1751 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1752 <meta name="robots" content="index, nofollow"/>
1753 <title>$title</title>
1754 EOF
1755 # print out each stylesheet that exist
1756         if (defined $stylesheet) {
1757 #provides backwards capability for those people who define style sheet in a config file
1758                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1759         } else {
1760                 foreach my $stylesheet (@stylesheets) {
1761                         next unless $stylesheet;
1762                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1763                 }
1764         }
1765         if (defined $project) {
1766                 printf('<link rel="alternate" title="%s log RSS feed" '.
1767                        'href="%s" type="application/rss+xml" />'."\n",
1768                        esc_param($project), href(action=>"rss"));
1769                 printf('<link rel="alternate" title="%s log Atom feed" '.
1770                        'href="%s" type="application/atom+xml" />'."\n",
1771                        esc_param($project), href(action=>"atom"));
1772         } else {
1773                 printf('<link rel="alternate" title="%s projects list" '.
1774                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1775                        $site_name, href(project=>undef, action=>"project_index"));
1776                 printf('<link rel="alternate" title="%s projects feeds" '.
1777                        'href="%s" type="text/x-opml"/>'."\n",
1778                        $site_name, href(project=>undef, action=>"opml"));
1779         }
1780         if (defined $favicon) {
1781                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1782         }
1783
1784         print "</head>\n" .
1785               "<body>\n";
1786
1787         if (-f $site_header) {
1788                 open (my $fd, $site_header);
1789                 print <$fd>;
1790                 close $fd;
1791         }
1792
1793         print "<div class=\"page_header\">\n" .
1794               $cgi->a({-href => esc_url($logo_url),
1795                        -title => $logo_label},
1796                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1797         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1798         if (defined $project) {
1799                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1800                 if (defined $action) {
1801                         print " / $action";
1802                 }
1803                 print "\n";
1804         }
1805         my ($have_search) = gitweb_check_feature('search');
1806         if ((defined $project) && ($have_search)) {
1807                 if (!defined $searchtext) {
1808                         $searchtext = "";
1809                 }
1810                 my $search_hash;
1811                 if (defined $hash_base) {
1812                         $search_hash = $hash_base;
1813                 } elsif (defined $hash) {
1814                         $search_hash = $hash;
1815                 } else {
1816                         $search_hash = "HEAD";
1817                 }
1818                 $cgi->param("a", "search");
1819                 $cgi->param("h", $search_hash);
1820                 $cgi->param("p", $project);
1821                 print $cgi->startform(-method => "get", -action => $my_uri) .
1822                       "<div class=\"search\">\n" .
1823                       $cgi->hidden(-name => "p") . "\n" .
1824                       $cgi->hidden(-name => "a") . "\n" .
1825                       $cgi->hidden(-name => "h") . "\n" .
1826                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1827                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1828                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1829                       " search:\n",
1830                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1831                       "</div>" .
1832                       $cgi->end_form() . "\n";
1833         }
1834         print "</div>\n";
1835 }
1836
1837 sub git_footer_html {
1838         print "<div class=\"page_footer\">\n";
1839         if (defined $project) {
1840                 my $descr = git_get_project_description($project);
1841                 if (defined $descr) {
1842                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1843                 }
1844                 print $cgi->a({-href => href(action=>"rss"),
1845                               -class => "rss_logo"}, "RSS") . " ";
1846                 print $cgi->a({-href => href(action=>"atom"),
1847                               -class => "rss_logo"}, "Atom") . "\n";
1848         } else {
1849                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1850                               -class => "rss_logo"}, "OPML") . " ";
1851                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1852                               -class => "rss_logo"}, "TXT") . "\n";
1853         }
1854         print "</div>\n" ;
1855
1856         if (-f $site_footer) {
1857                 open (my $fd, $site_footer);
1858                 print <$fd>;
1859                 close $fd;
1860         }
1861
1862         print "</body>\n" .
1863               "</html>";
1864 }
1865
1866 sub die_error {
1867         my $status = shift || "403 Forbidden";
1868         my $error = shift || "Malformed query, file missing or permission denied";
1869
1870         git_header_html($status);
1871         print <<EOF;
1872 <div class="page_body">
1873 <br /><br />
1874 $status - $error
1875 <br />
1876 </div>
1877 EOF
1878         git_footer_html();
1879         exit;
1880 }
1881
1882 ## ----------------------------------------------------------------------
1883 ## functions printing or outputting HTML: navigation
1884
1885 sub git_print_page_nav {
1886         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1887         $extra = '' if !defined $extra; # pager or formats
1888
1889         my @navs = qw(summary shortlog log commit commitdiff tree);
1890         if ($suppress) {
1891                 @navs = grep { $_ ne $suppress } @navs;
1892         }
1893
1894         my %arg = map { $_ => {action=>$_} } @navs;
1895         if (defined $head) {
1896                 for (qw(commit commitdiff)) {
1897                         $arg{$_}{'hash'} = $head;
1898                 }
1899                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1900                         for (qw(shortlog log)) {
1901                                 $arg{$_}{'hash'} = $head;
1902                         }
1903                 }
1904         }
1905         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1906         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1907
1908         print "<div class=\"page_nav\">\n" .
1909                 (join " | ",
1910                  map { $_ eq $current ?
1911                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1912                  } @navs);
1913         print "<br/>\n$extra<br/>\n" .
1914               "</div>\n";
1915 }
1916
1917 sub format_paging_nav {
1918         my ($action, $hash, $head, $page, $nrevs) = @_;
1919         my $paging_nav;
1920
1921
1922         if ($hash ne $head || $page) {
1923                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1924         } else {
1925                 $paging_nav .= "HEAD";
1926         }
1927
1928         if ($page > 0) {
1929                 $paging_nav .= " &sdot; " .
1930                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1931                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1932         } else {
1933                 $paging_nav .= " &sdot; prev";
1934         }
1935
1936         if ($nrevs >= (100 * ($page+1)-1)) {
1937                 $paging_nav .= " &sdot; " .
1938                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1939                                  -accesskey => "n", -title => "Alt-n"}, "next");
1940         } else {
1941                 $paging_nav .= " &sdot; next";
1942         }
1943
1944         return $paging_nav;
1945 }
1946
1947 ## ......................................................................
1948 ## functions printing or outputting HTML: div
1949
1950 sub git_print_header_div {
1951         my ($action, $title, $hash, $hash_base) = @_;
1952         my %args = ();
1953
1954         $args{'action'} = $action;
1955         $args{'hash'} = $hash if $hash;
1956         $args{'hash_base'} = $hash_base if $hash_base;
1957
1958         print "<div class=\"header\">\n" .
1959               $cgi->a({-href => href(%args), -class => "title"},
1960               $title ? $title : $action) .
1961               "\n</div>\n";
1962 }
1963
1964 #sub git_print_authorship (\%) {
1965 sub git_print_authorship {
1966         my $co = shift;
1967
1968         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1969         print "<div class=\"author_date\">" .
1970               esc_html($co->{'author_name'}) .
1971               " [$ad{'rfc2822'}";
1972         if ($ad{'hour_local'} < 6) {
1973                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1974                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1975         } else {
1976                 printf(" (%02d:%02d %s)",
1977                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1978         }
1979         print "]</div>\n";
1980 }
1981
1982 sub git_print_page_path {
1983         my $name = shift;
1984         my $type = shift;
1985         my $hb = shift;
1986
1987
1988         print "<div class=\"page_path\">";
1989         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1990                       -title => 'tree root'}, to_utf8("[$project]"));
1991         print " / ";
1992         if (defined $name) {
1993                 my @dirname = split '/', $name;
1994                 my $basename = pop @dirname;
1995                 my $fullname = '';
1996
1997                 foreach my $dir (@dirname) {
1998                         $fullname .= ($fullname ? '/' : '') . $dir;
1999                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2000                                                      hash_base=>$hb),
2001                                       -title => $fullname}, esc_path($dir));
2002                         print " / ";
2003                 }
2004                 if (defined $type && $type eq 'blob') {
2005                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2006                                                      hash_base=>$hb),
2007                                       -title => $name}, esc_path($basename));
2008                 } elsif (defined $type && $type eq 'tree') {
2009                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2010                                                      hash_base=>$hb),
2011                                       -title => $name}, esc_path($basename));
2012                         print " / ";
2013                 } else {
2014                         print esc_path($basename);
2015                 }
2016         }
2017         print "<br/></div>\n";
2018 }
2019
2020 # sub git_print_log (\@;%) {
2021 sub git_print_log ($;%) {
2022         my $log = shift;
2023         my %opts = @_;
2024
2025         if ($opts{'-remove_title'}) {
2026                 # remove title, i.e. first line of log
2027                 shift @$log;
2028         }
2029         # remove leading empty lines
2030         while (defined $log->[0] && $log->[0] eq "") {
2031                 shift @$log;
2032         }
2033
2034         # print log
2035         my $signoff = 0;
2036         my $empty = 0;
2037         foreach my $line (@$log) {
2038                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2039                         $signoff = 1;
2040                         $empty = 0;
2041                         if (! $opts{'-remove_signoff'}) {
2042                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2043                                 next;
2044                         } else {
2045                                 # remove signoff lines
2046                                 next;
2047                         }
2048                 } else {
2049                         $signoff = 0;
2050                 }
2051
2052                 # print only one empty line
2053                 # do not print empty line after signoff
2054                 if ($line eq "") {
2055                         next if ($empty || $signoff);
2056                         $empty = 1;
2057                 } else {
2058                         $empty = 0;
2059                 }
2060
2061                 print format_log_line_html($line) . "<br/>\n";
2062         }
2063
2064         if ($opts{'-final_empty_line'}) {
2065                 # end with single empty line
2066                 print "<br/>\n" unless $empty;
2067         }
2068 }
2069
2070 # return link target (what link points to)
2071 sub git_get_link_target {
2072         my $hash = shift;
2073         my $link_target;
2074
2075         # read link
2076         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2077                 or return;
2078         {
2079                 local $/;
2080                 $link_target = <$fd>;
2081         }
2082         close $fd
2083                 or return;
2084
2085         return $link_target;
2086 }
2087
2088 # given link target, and the directory (basedir) the link is in,
2089 # return target of link relative to top directory (top tree);
2090 # return undef if it is not possible (including absolute links).
2091 sub normalize_link_target {
2092         my ($link_target, $basedir, $hash_base) = @_;
2093
2094         # we can normalize symlink target only if $hash_base is provided
2095         return unless $hash_base;
2096
2097         # absolute symlinks (beginning with '/') cannot be normalized
2098         return if (substr($link_target, 0, 1) eq '/');
2099
2100         # normalize link target to path from top (root) tree (dir)
2101         my $path;
2102         if ($basedir) {
2103                 $path = $basedir . '/' . $link_target;
2104         } else {
2105                 # we are in top (root) tree (dir)
2106                 $path = $link_target;
2107         }
2108
2109         # remove //, /./, and /../
2110         my @path_parts;
2111         foreach my $part (split('/', $path)) {
2112                 # discard '.' and ''
2113                 next if (!$part || $part eq '.');
2114                 # handle '..'
2115                 if ($part eq '..') {
2116                         if (@path_parts) {
2117                                 pop @path_parts;
2118                         } else {
2119                                 # link leads outside repository (outside top dir)
2120                                 return;
2121                         }
2122                 } else {
2123                         push @path_parts, $part;
2124                 }
2125         }
2126         $path = join('/', @path_parts);
2127
2128         return $path;
2129 }
2130
2131 # print tree entry (row of git_tree), but without encompassing <tr> element
2132 sub git_print_tree_entry {
2133         my ($t, $basedir, $hash_base, $have_blame) = @_;
2134
2135         my %base_key = ();
2136         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2137
2138         # The format of a table row is: mode list link.  Where mode is
2139         # the mode of the entry, list is the name of the entry, an href,
2140         # and link is the action links of the entry.
2141
2142         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2143         if ($t->{'type'} eq "blob") {
2144                 print "<td class=\"list\">" .
2145                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2146                                                file_name=>"$basedir$t->{'name'}", %base_key),
2147                                 -class => "list"}, esc_path($t->{'name'}));
2148                 if (S_ISLNK(oct $t->{'mode'})) {
2149                         my $link_target = git_get_link_target($t->{'hash'});
2150                         if ($link_target) {
2151                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2152                                 if (defined $norm_target) {
2153                                         print " -> " .
2154                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2155                                                                      file_name=>$norm_target),
2156                                                        -title => $norm_target}, esc_path($link_target));
2157                                 } else {
2158                                         print " -> " . esc_path($link_target);
2159                                 }
2160                         }
2161                 }
2162                 print "</td>\n";
2163                 print "<td class=\"link\">";
2164                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2165                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2166                               "blob");
2167                 if ($have_blame) {
2168                         print " | " .
2169                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2170                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2171                                       "blame");
2172                 }
2173                 if (defined $hash_base) {
2174                         print " | " .
2175                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2176                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2177                                       "history");
2178                 }
2179                 print " | " .
2180                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2181                                                file_name=>"$basedir$t->{'name'}")},
2182                                 "raw");
2183                 print "</td>\n";
2184
2185         } elsif ($t->{'type'} eq "tree") {
2186                 print "<td class=\"list\">";
2187                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2188                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2189                               esc_path($t->{'name'}));
2190                 print "</td>\n";
2191                 print "<td class=\"link\">";
2192                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2193                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2194                               "tree");
2195                 if (defined $hash_base) {
2196                         print " | " .
2197                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2198                                                      file_name=>"$basedir$t->{'name'}")},
2199                                       "history");
2200                 }
2201                 print "</td>\n";
2202         }
2203 }
2204
2205 ## ......................................................................
2206 ## functions printing large fragments of HTML
2207
2208 sub git_difftree_body {
2209         my ($difftree, $hash, $parent) = @_;
2210         my ($have_blame) = gitweb_check_feature('blame');
2211         print "<div class=\"list_head\">\n";
2212         if ($#{$difftree} > 10) {
2213                 print(($#{$difftree} + 1) . " files changed:\n");
2214         }
2215         print "</div>\n";
2216
2217         print "<table class=\"diff_tree\">\n";
2218         my $alternate = 1;
2219         my $patchno = 0;
2220         foreach my $line (@{$difftree}) {
2221                 my %diff = parse_difftree_raw_line($line);
2222
2223                 if ($alternate) {
2224                         print "<tr class=\"dark\">\n";
2225                 } else {
2226                         print "<tr class=\"light\">\n";
2227                 }
2228                 $alternate ^= 1;
2229
2230                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2231                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2232                 if ($diff{'to_mode'} ne ('0' x 6)) {
2233                         $to_mode_oct = oct $diff{'to_mode'};
2234                         if (S_ISREG($to_mode_oct)) { # only for regular file
2235                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2236                         }
2237                         $to_file_type = file_type($diff{'to_mode'});
2238                 }
2239                 if ($diff{'from_mode'} ne ('0' x 6)) {
2240                         $from_mode_oct = oct $diff{'from_mode'};
2241                         if (S_ISREG($to_mode_oct)) { # only for regular file
2242                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2243                         }
2244                         $from_file_type = file_type($diff{'from_mode'});
2245                 }
2246
2247                 if ($diff{'status'} eq "A") { # created
2248                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2249                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2250                         $mode_chng   .= "]</span>";
2251                         print "<td>";
2252                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2253                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2254                                       -class => "list"}, esc_path($diff{'file'}));
2255                         print "</td>\n";
2256                         print "<td>$mode_chng</td>\n";
2257                         print "<td class=\"link\">";
2258                         if ($action eq 'commitdiff') {
2259                                 # link to patch
2260                                 $patchno++;
2261                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2262                                 print " | ";
2263                         }
2264                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2265                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2266                                       "blob");
2267                         print "</td>\n";
2268
2269                 } elsif ($diff{'status'} eq "D") { # deleted
2270                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2271                         print "<td>";
2272                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2273                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2274                                        -class => "list"}, esc_path($diff{'file'}));
2275                         print "</td>\n";
2276                         print "<td>$mode_chng</td>\n";
2277                         print "<td class=\"link\">";
2278                         if ($action eq 'commitdiff') {
2279                                 # link to patch
2280                                 $patchno++;
2281                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2282                                 print " | ";
2283                         }
2284                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2285                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2286                                       "blob") . " | ";
2287                         if ($have_blame) {
2288                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2289                                                              file_name=>$diff{'file'})},
2290                                               "blame") . " | ";
2291                         }
2292                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2293                                                      file_name=>$diff{'file'})},
2294                                       "history");
2295                         print "</td>\n";
2296
2297                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2298                         my $mode_chnge = "";
2299                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2300                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2301                                 if ($from_file_type ne $to_file_type) {
2302                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2303                                 }
2304                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2305                                         if ($from_mode_str && $to_mode_str) {
2306                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2307                                         } elsif ($to_mode_str) {
2308                                                 $mode_chnge .= " mode: $to_mode_str";
2309                                         }
2310                                 }
2311                                 $mode_chnge .= "]</span>\n";
2312                         }
2313                         print "<td>";
2314                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2315                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2316                                       -class => "list"}, esc_path($diff{'file'}));
2317                         print "</td>\n";
2318                         print "<td>$mode_chnge</td>\n";
2319                         print "<td class=\"link\">";
2320                         if ($action eq 'commitdiff') {
2321                                 # link to patch
2322                                 $patchno++;
2323                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2324                                       " | ";
2325                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2326                                 # "commit" view and modified file (not onlu mode changed)
2327                                 print $cgi->a({-href => href(action=>"blobdiff",
2328                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2329                                                              hash_base=>$hash, hash_parent_base=>$parent,
2330                                                              file_name=>$diff{'file'})},
2331                                               "diff") .
2332                                       " | ";
2333                         }
2334                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2335                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2336                                        "blob") . " | ";
2337                         if ($have_blame) {
2338                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2339                                                              file_name=>$diff{'file'})},
2340                                               "blame") . " | ";
2341                         }
2342                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2343                                                      file_name=>$diff{'file'})},
2344                                       "history");
2345                         print "</td>\n";
2346
2347                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2348                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2349                         my $nstatus = $status_name{$diff{'status'}};
2350                         my $mode_chng = "";
2351                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2352                                 # mode also for directories, so we cannot use $to_mode_str
2353                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2354                         }
2355                         print "<td>" .
2356                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2357                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2358                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2359                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2360                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2361                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2362                                       -class => "list"}, esc_path($diff{'from_file'})) .
2363                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2364                               "<td class=\"link\">";
2365                         if ($action eq 'commitdiff') {
2366                                 # link to patch
2367                                 $patchno++;
2368                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2369                                       " | ";
2370                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2371                                 # "commit" view and modified file (not only pure rename or copy)
2372                                 print $cgi->a({-href => href(action=>"blobdiff",
2373                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2374                                                              hash_base=>$hash, hash_parent_base=>$parent,
2375                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2376                                               "diff") .
2377                                       " | ";
2378                         }
2379                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2380                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2381                                       "blob") . " | ";
2382                         if ($have_blame) {
2383                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2384                                                              file_name=>$diff{'to_file'})},
2385                                               "blame") . " | ";
2386                         }
2387                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2388                                                     file_name=>$diff{'to_file'})},
2389                                       "history");
2390                         print "</td>\n";
2391
2392                 } # we should not encounter Unmerged (U) or Unknown (X) status
2393                 print "</tr>\n";
2394         }
2395         print "</table>\n";
2396 }
2397
2398 sub git_patchset_body {
2399         my ($fd, $difftree, $hash, $hash_parent) = @_;
2400
2401         my $patch_idx = 0;
2402         my $patch_number = 0;
2403         my $patch_line;
2404         my $diffinfo;
2405         my (%from, %to);
2406
2407         print "<div class=\"patchset\">\n";
2408
2409         # skip to first patch
2410         while ($patch_line = <$fd>) {
2411                 chomp $patch_line;
2412
2413                 last if ($patch_line =~ m/^diff /);
2414         }
2415
2416  PATCH:
2417         while ($patch_line) {
2418                 my @diff_header;
2419                 my ($from_id, $to_id);
2420
2421                 # git diff header
2422                 #assert($patch_line =~ m/^diff /) if DEBUG;
2423                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2424                 $patch_number++;
2425                 push @diff_header, $patch_line;
2426
2427                 # extended diff header
2428         EXTENDED_HEADER:
2429                 while ($patch_line = <$fd>) {
2430                         chomp $patch_line;
2431
2432                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2433
2434                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2435                                 $from_id = $1;
2436                                 $to_id   = $2;
2437                         }
2438
2439                         push @diff_header, $patch_line;
2440                 }
2441                 my $last_patch_line = $patch_line;
2442
2443                 # check if current patch belong to current raw line
2444                 # and parse raw git-diff line if needed
2445                 if (defined $diffinfo &&
2446                     $diffinfo->{'from_id'} eq $from_id &&
2447                     $diffinfo->{'to_id'}   eq $to_id) {
2448                         # this is split patch
2449                         print "<div class=\"patch cont\">\n";
2450                 } else {
2451                         # advance raw git-diff output if needed
2452                         $patch_idx++ if defined $diffinfo;
2453
2454                         # read and prepare patch information
2455                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2456                                 # pre-parsed (or generated by hand)
2457                                 $diffinfo = $difftree->[$patch_idx];
2458                         } else {
2459                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2460                         }
2461                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2462                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2463                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2464                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2465                                                      hash=>$diffinfo->{'from_id'},
2466                                                      file_name=>$from{'file'});
2467                         } else {
2468                                 delete $from{'href'};
2469                         }
2470                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2471                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2472                                                    hash=>$diffinfo->{'to_id'},
2473                                                    file_name=>$to{'file'});
2474                         } else {
2475                                 delete $to{'href'};
2476                         }
2477                         # this is first patch for raw difftree line with $patch_idx index
2478                         # we index @$difftree array from 0, but number patches from 1
2479                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2480                 }
2481
2482                 # print "git diff" header
2483                 $patch_line = shift @diff_header;
2484                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2485                 if ($from{'href'}) {
2486                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2487                                                'a/' . esc_path($from{'file'}));
2488                 } else { # file was added
2489                         $patch_line .= 'a/' . esc_path($from{'file'});
2490                 }
2491                 $patch_line .= ' ';
2492                 if ($to{'href'}) {
2493                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2494                                                'b/' . esc_path($to{'file'}));
2495                 } else { # file was deleted
2496                         $patch_line .= 'b/' . esc_path($to{'file'});
2497                 }
2498                 print "<div class=\"diff header\">$patch_line</div>\n";
2499
2500                 # print extended diff header
2501                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2502         EXTENDED_HEADER:
2503                 foreach $patch_line (@diff_header) {
2504                         # match <path>
2505                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2506                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2507                                                        esc_path($from{'file'}));
2508                         }
2509                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2510                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2511                                                        esc_path($to{'file'}));
2512                         }
2513                         # match <mode>
2514                         if ($patch_line =~ m/\s(\d{6})$/) {
2515                                 $patch_line .= '<span class="info"> (' .
2516                                                file_type_long($1) .
2517                                                ')</span>';
2518                         }
2519                         # match <hash>
2520                         if ($patch_line =~ m/^index/) {
2521                                 my ($from_link, $to_link);
2522                                 if ($from{'href'}) {
2523                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2524                                                              substr($diffinfo->{'from_id'},0,7));
2525                                 } else {
2526                                         $from_link = '0' x 7;
2527                                 }
2528                                 if ($to{'href'}) {
2529                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2530                                                            substr($diffinfo->{'to_id'},0,7));
2531                                 } else {
2532                                         $to_link = '0' x 7;
2533                                 }
2534                                 #affirm {
2535                                 #       my ($from_hash, $to_hash) =
2536                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2537                                 #       my ($from_id, $to_id) =
2538                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2539                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2540                                 #} if DEBUG;
2541                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2542                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2543                         }
2544                         print $patch_line . "<br/>\n";
2545                 }
2546                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2547
2548                 # from-file/to-file diff header
2549                 $patch_line = $last_patch_line;
2550                 if (! $patch_line) {
2551                         print "</div>\n"; # class="patch"
2552                         last PATCH;
2553                 }
2554                 next PATCH if ($patch_line =~ m/^diff /);
2555                 #assert($patch_line =~ m/^---/) if DEBUG;
2556                 if ($from{'href'} && $patch_line =~ m!^--- "?a/!) {
2557                         $patch_line = '--- a/' .
2558                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2559                                               esc_path($from{'file'}));
2560                 }
2561                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2562
2563                 $patch_line = <$fd>;
2564                 chomp $patch_line;
2565
2566                 #assert($patch_line =~ m/^+++/) if DEBUG;
2567                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2568                         $patch_line = '+++ b/' .
2569                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2570                                               esc_path($to{'file'}));
2571                 }
2572                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2573
2574                 # the patch itself
2575         LINE:
2576                 while ($patch_line = <$fd>) {
2577                         chomp $patch_line;
2578
2579                         next PATCH if ($patch_line =~ m/^diff /);
2580
2581                         print format_diff_line($patch_line, \%from, \%to);
2582                 }
2583
2584         } continue {
2585                 print "</div>\n"; # class="patch"
2586         }
2587         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2588
2589         print "</div>\n"; # class="patchset"
2590 }
2591
2592 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2593
2594 sub git_project_list_body {
2595         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2596
2597         my ($check_forks) = gitweb_check_feature('forks');
2598
2599         my @projects;
2600         foreach my $pr (@$projlist) {
2601                 my (@aa) = git_get_last_activity($pr->{'path'});
2602                 unless (@aa) {
2603                         next;
2604                 }
2605                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2606                 if (!defined $pr->{'descr'}) {
2607                         my $descr = git_get_project_description($pr->{'path'}) || "";
2608                         $pr->{'descr_long'} = to_utf8($descr);
2609                         $pr->{'descr'} = chop_str($descr, 25, 5);
2610                 }
2611                 if (!defined $pr->{'owner'}) {
2612                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2613                 }
2614                 if ($check_forks) {
2615                         my $pname = $pr->{'path'};
2616                         if (($pname =~ s/\.git$//) &&
2617                             ($pname !~ /\/$/) &&
2618                             (-d "$projectroot/$pname")) {
2619                                 $pr->{'forks'} = "-d $projectroot/$pname";
2620                         }
2621                         else {
2622                                 $pr->{'forks'} = 0;
2623                         }
2624                 }
2625                 push @projects, $pr;
2626         }
2627
2628         $order ||= $default_projects_order;
2629         $from = 0 unless defined $from;
2630         $to = $#projects if (!defined $to || $#projects < $to);
2631
2632         print "<table class=\"project_list\">\n";
2633         unless ($no_header) {
2634                 print "<tr>\n";
2635                 if ($check_forks) {
2636                         print "<th></th>\n";
2637                 }
2638                 if ($order eq "project") {
2639                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2640                         print "<th>Project</th>\n";
2641                 } else {
2642                         print "<th>" .
2643                               $cgi->a({-href => href(project=>undef, order=>'project'),
2644                                        -class => "header"}, "Project") .
2645                               "</th>\n";
2646                 }
2647                 if ($order eq "descr") {
2648                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2649                         print "<th>Description</th>\n";
2650                 } else {
2651                         print "<th>" .
2652                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2653                                        -class => "header"}, "Description") .
2654                               "</th>\n";
2655                 }
2656                 if ($order eq "owner") {
2657                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2658                         print "<th>Owner</th>\n";
2659                 } else {
2660                         print "<th>" .
2661                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2662                                        -class => "header"}, "Owner") .
2663                               "</th>\n";
2664                 }
2665                 if ($order eq "age") {
2666                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2667                         print "<th>Last Change</th>\n";
2668                 } else {
2669                         print "<th>" .
2670                               $cgi->a({-href => href(project=>undef, order=>'age'),
2671                                        -class => "header"}, "Last Change") .
2672                               "</th>\n";
2673                 }
2674                 print "<th></th>\n" .
2675                       "</tr>\n";
2676         }
2677         my $alternate = 1;
2678         for (my $i = $from; $i <= $to; $i++) {
2679                 my $pr = $projects[$i];
2680                 if ($alternate) {
2681                         print "<tr class=\"dark\">\n";
2682                 } else {
2683                         print "<tr class=\"light\">\n";
2684                 }
2685                 $alternate ^= 1;
2686                 if ($check_forks) {
2687                         print "<td>";
2688                         if ($pr->{'forks'}) {
2689                                 print "<!-- $pr->{'forks'} -->\n";
2690                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2691                         }
2692                         print "</td>\n";
2693                 }
2694                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2695                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2696                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2697                                         -class => "list", -title => $pr->{'descr_long'}},
2698                                         esc_html($pr->{'descr'})) . "</td>\n" .
2699                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2700                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2701                       $pr->{'age_string'} . "</td>\n" .
2702                       "<td class=\"link\">" .
2703                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2704                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2705                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2706                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2707                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2708                       "</td>\n" .
2709                       "</tr>\n";
2710         }
2711         if (defined $extra) {
2712                 print "<tr>\n";
2713                 if ($check_forks) {
2714                         print "<td></td>\n";
2715                 }
2716                 print "<td colspan=\"5\">$extra</td>\n" .
2717                       "</tr>\n";
2718         }
2719         print "</table>\n";
2720 }
2721
2722 sub git_shortlog_body {
2723         # uses global variable $project
2724         my ($commitlist, $from, $to, $refs, $extra) = @_;
2725
2726         my $have_snapshot = gitweb_have_snapshot();
2727
2728         $from = 0 unless defined $from;
2729         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2730
2731         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2732         my $alternate = 1;
2733         for (my $i = $from; $i <= $to; $i++) {
2734                 my %co = %{$commitlist->[$i]};
2735                 my $commit = $co{'id'};
2736                 my $ref = format_ref_marker($refs, $commit);
2737                 if ($alternate) {
2738                         print "<tr class=\"dark\">\n";
2739                 } else {
2740                         print "<tr class=\"light\">\n";
2741                 }
2742                 $alternate ^= 1;
2743                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2744                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2745                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2746                       "<td>";
2747                 print format_subject_html($co{'title'}, $co{'title_short'},
2748                                           href(action=>"commit", hash=>$commit), $ref);
2749                 print "</td>\n" .
2750                       "<td class=\"link\">" .
2751                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2752                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2753                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2754                 if ($have_snapshot) {
2755                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2756                 }
2757                 print "</td>\n" .
2758                       "</tr>\n";
2759         }
2760         if (defined $extra) {
2761                 print "<tr>\n" .
2762                       "<td colspan=\"4\">$extra</td>\n" .
2763                       "</tr>\n";
2764         }
2765         print "</table>\n";
2766 }
2767
2768 sub git_history_body {
2769         # Warning: assumes constant type (blob or tree) during history
2770         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2771
2772         $from = 0 unless defined $from;
2773         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2774
2775         print "<table class=\"history\" cellspacing=\"0\">\n";
2776         my $alternate = 1;
2777         for (my $i = $from; $i <= $to; $i++) {
2778                 my %co = %{$commitlist->[$i]};
2779                 if (!%co) {
2780                         next;
2781                 }
2782                 my $commit = $co{'id'};
2783
2784                 my $ref = format_ref_marker($refs, $commit);
2785
2786                 if ($alternate) {
2787                         print "<tr class=\"dark\">\n";
2788                 } else {
2789                         print "<tr class=\"light\">\n";
2790                 }
2791                 $alternate ^= 1;
2792                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2793                       # shortlog uses      chop_str($co{'author_name'}, 10)
2794                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2795                       "<td>";
2796                 # originally git_history used chop_str($co{'title'}, 50)
2797                 print format_subject_html($co{'title'}, $co{'title_short'},
2798                                           href(action=>"commit", hash=>$commit), $ref);
2799                 print "</td>\n" .
2800                       "<td class=\"link\">" .
2801                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2802                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2803
2804                 if ($ftype eq 'blob') {
2805                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2806                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2807                         if (defined $blob_current && defined $blob_parent &&
2808                                         $blob_current ne $blob_parent) {
2809                                 print " | " .
2810                                         $cgi->a({-href => href(action=>"blobdiff",
2811                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2812                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2813                                                                file_name=>$file_name)},
2814                                                 "diff to current");
2815                         }
2816                 }
2817                 print "</td>\n" .
2818                       "</tr>\n";
2819         }
2820         if (defined $extra) {
2821                 print "<tr>\n" .
2822                       "<td colspan=\"4\">$extra</td>\n" .
2823                       "</tr>\n";
2824         }
2825         print "</table>\n";
2826 }
2827
2828 sub git_tags_body {
2829         # uses global variable $project
2830         my ($taglist, $from, $to, $extra) = @_;
2831         $from = 0 unless defined $from;
2832         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2833
2834         print "<table class=\"tags\" cellspacing=\"0\">\n";
2835         my $alternate = 1;
2836         for (my $i = $from; $i <= $to; $i++) {
2837                 my $entry = $taglist->[$i];
2838                 my %tag = %$entry;
2839                 my $comment = $tag{'subject'};
2840                 my $comment_short;
2841                 if (defined $comment) {
2842                         $comment_short = chop_str($comment, 30, 5);
2843                 }
2844                 if ($alternate) {
2845                         print "<tr class=\"dark\">\n";
2846                 } else {
2847                         print "<tr class=\"light\">\n";
2848                 }
2849                 $alternate ^= 1;
2850                 if (defined $tag{'age'}) {
2851                         print "<td><i>$tag{'age'}</i></td>\n";
2852                 } else {
2853                         print "<td></td>\n";
2854                 }
2855                 print "<td>" .
2856                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2857                                -class => "list name"}, esc_html($tag{'name'})) .
2858                       "</td>\n" .
2859                       "<td>";
2860                 if (defined $comment) {
2861                         print format_subject_html($comment, $comment_short,
2862                                                   href(action=>"tag", hash=>$tag{'id'}));
2863                 }
2864                 print "</td>\n" .
2865                       "<td class=\"selflink\">";
2866                 if ($tag{'type'} eq "tag") {
2867                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2868                 } else {
2869                         print "&nbsp;";
2870                 }
2871                 print "</td>\n" .
2872                       "<td class=\"link\">" . " | " .
2873                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2874                 if ($tag{'reftype'} eq "commit") {
2875                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2876                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2877                 } elsif ($tag{'reftype'} eq "blob") {
2878                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2879                 }
2880                 print "</td>\n" .
2881                       "</tr>";
2882         }
2883         if (defined $extra) {
2884                 print "<tr>\n" .
2885                       "<td colspan=\"5\">$extra</td>\n" .
2886                       "</tr>\n";
2887         }
2888         print "</table>\n";
2889 }
2890
2891 sub git_heads_body {
2892         # uses global variable $project
2893         my ($headlist, $head, $from, $to, $extra) = @_;
2894         $from = 0 unless defined $from;
2895         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2896
2897         print "<table class=\"heads\" cellspacing=\"0\">\n";
2898         my $alternate = 1;
2899         for (my $i = $from; $i <= $to; $i++) {
2900                 my $entry = $headlist->[$i];
2901                 my %ref = %$entry;
2902                 my $curr = $ref{'id'} eq $head;
2903                 if ($alternate) {
2904                         print "<tr class=\"dark\">\n";
2905                 } else {
2906                         print "<tr class=\"light\">\n";
2907                 }
2908                 $alternate ^= 1;
2909                 print "<td><i>$ref{'age'}</i></td>\n" .
2910                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2911                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2912                                -class => "list name"},esc_html($ref{'name'})) .
2913                       "</td>\n" .
2914                       "<td class=\"link\">" .
2915                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2916                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2917                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2918                       "</td>\n" .
2919                       "</tr>";
2920         }
2921         if (defined $extra) {
2922                 print "<tr>\n" .
2923                       "<td colspan=\"3\">$extra</td>\n" .
2924                       "</tr>\n";
2925         }
2926         print "</table>\n";
2927 }
2928
2929 sub git_search_grep_body {
2930         my ($commitlist, $from, $to, $extra) = @_;
2931         $from = 0 unless defined $from;
2932         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2933
2934         print "<table class=\"grep\" cellspacing=\"0\">\n";
2935         my $alternate = 1;
2936         for (my $i = $from; $i <= $to; $i++) {
2937                 my %co = %{$commitlist->[$i]};
2938                 if (!%co) {
2939                         next;
2940                 }
2941                 my $commit = $co{'id'};
2942                 if ($alternate) {
2943                         print "<tr class=\"dark\">\n";
2944                 } else {
2945                         print "<tr class=\"light\">\n";
2946                 }
2947                 $alternate ^= 1;
2948                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2949                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2950                       "<td>" .
2951                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2952                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2953                 my $comment = $co{'comment'};
2954                 foreach my $line (@$comment) {
2955                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2956                                 my $lead = esc_html($1) || "";
2957                                 $lead = chop_str($lead, 30, 10);
2958                                 my $match = esc_html($2) || "";
2959                                 my $trail = esc_html($3) || "";
2960                                 $trail = chop_str($trail, 30, 10);
2961                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2962                                 print chop_str($text, 80, 5) . "<br/>\n";
2963                         }
2964                 }
2965                 print "</td>\n" .
2966                       "<td class=\"link\">" .
2967                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2968                       " | " .
2969                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2970                 print "</td>\n" .
2971                       "</tr>\n";
2972         }
2973         if (defined $extra) {
2974                 print "<tr>\n" .
2975                       "<td colspan=\"3\">$extra</td>\n" .
2976                       "</tr>\n";
2977         }
2978         print "</table>\n";
2979 }
2980
2981 ## ======================================================================
2982 ## ======================================================================
2983 ## actions
2984
2985 sub git_project_list {
2986         my $order = $cgi->param('o');
2987         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
2988                 die_error(undef, "Unknown order parameter");
2989         }
2990
2991         my @list = git_get_projects_list();
2992         if (!@list) {
2993                 die_error(undef, "No projects found");
2994         }
2995
2996         git_header_html();
2997         if (-f $home_text) {
2998                 print "<div class=\"index_include\">\n";
2999                 open (my $fd, $home_text);
3000                 print <$fd>;
3001                 close $fd;
3002                 print "</div>\n";
3003         }
3004         git_project_list_body(\@list, $order);
3005         git_footer_html();
3006 }
3007
3008 sub git_forks {
3009         my $order = $cgi->param('o');
3010         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3011                 die_error(undef, "Unknown order parameter");
3012         }
3013
3014         my @list = git_get_projects_list($project);
3015         if (!@list) {
3016                 die_error(undef, "No forks found");
3017         }
3018
3019         git_header_html();
3020         git_print_page_nav('','');
3021         git_print_header_div('summary', "$project forks");
3022         git_project_list_body(\@list, $order);
3023         git_footer_html();
3024 }
3025
3026 sub git_project_index {
3027         my @projects = git_get_projects_list($project);
3028
3029         print $cgi->header(
3030                 -type => 'text/plain',
3031                 -charset => 'utf-8',
3032                 -content_disposition => 'inline; filename="index.aux"');
3033
3034         foreach my $pr (@projects) {
3035                 if (!exists $pr->{'owner'}) {
3036                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3037                 }
3038
3039                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3040                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3041                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3042                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3043                 $path  =~ s/ /\+/g;
3044                 $owner =~ s/ /\+/g;
3045
3046                 print "$path $owner\n";
3047         }
3048 }
3049
3050 sub git_summary {
3051         my $descr = git_get_project_description($project) || "none";
3052         my %co = parse_commit("HEAD");
3053         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3054         my $head = $co{'id'};
3055
3056         my $owner = git_get_project_owner($project);
3057
3058         my $refs = git_get_references();
3059         # These get_*_list functions return one more to allow us to see if
3060         # there are more ...
3061         my @taglist  = git_get_tags_list(16);
3062         my @headlist = git_get_heads_list(16);
3063         my @forklist;
3064         my ($check_forks) = gitweb_check_feature('forks');
3065
3066         if ($check_forks) {
3067                 @forklist = git_get_projects_list($project);
3068         }
3069
3070         git_header_html();
3071         git_print_page_nav('summary','', $head);
3072
3073         print "<div class=\"title\">&nbsp;</div>\n";
3074         print "<table cellspacing=\"0\">\n" .
3075               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3076               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3077               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3078         # use per project git URL list in $projectroot/$project/cloneurl
3079         # or make project git URL from git base URL and project name
3080         my $url_tag = "URL";
3081         my @url_list = git_get_project_url_list($project);
3082         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3083         foreach my $git_url (@url_list) {
3084                 next unless $git_url;
3085                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3086                 $url_tag = "";
3087         }
3088         print "</table>\n";
3089
3090         if (-s "$projectroot/$project/README.html") {
3091                 if (open my $fd, "$projectroot/$project/README.html") {
3092                         print "<div class=\"title\">readme</div>\n";
3093                         print $_ while (<$fd>);
3094                         close $fd;
3095                 }
3096         }
3097
3098         # we need to request one more than 16 (0..15) to check if
3099         # those 16 are all
3100         my @commitlist = parse_commits($head, 17);
3101         git_print_header_div('shortlog');
3102         git_shortlog_body(\@commitlist, 0, 15, $refs,
3103                           $#commitlist <=  15 ? undef :
3104                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3105
3106         if (@taglist) {
3107                 git_print_header_div('tags');
3108                 git_tags_body(\@taglist, 0, 15,
3109                               $#taglist <=  15 ? undef :
3110                               $cgi->a({-href => href(action=>"tags")}, "..."));
3111         }
3112
3113         if (@headlist) {
3114                 git_print_header_div('heads');
3115                 git_heads_body(\@headlist, $head, 0, 15,
3116                                $#headlist <= 15 ? undef :
3117                                $cgi->a({-href => href(action=>"heads")}, "..."));
3118         }
3119
3120         if (@forklist) {
3121                 git_print_header_div('forks');
3122                 git_project_list_body(\@forklist, undef, 0, 15,
3123                                       $#forklist <= 15 ? undef :
3124                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3125                                       'noheader');
3126         }
3127
3128         git_footer_html();
3129 }
3130
3131 sub git_tag {
3132         my $head = git_get_head_hash($project);
3133         git_header_html();
3134         git_print_page_nav('','', $head,undef,$head);
3135         my %tag = parse_tag($hash);
3136         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3137         print "<div class=\"title_text\">\n" .
3138               "<table cellspacing=\"0\">\n" .
3139               "<tr>\n" .
3140               "<td>object</td>\n" .
3141               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3142                                $tag{'object'}) . "</td>\n" .
3143               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3144                                               $tag{'type'}) . "</td>\n" .
3145               "</tr>\n";
3146         if (defined($tag{'author'})) {
3147                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3148                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3149                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3150                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3151                         "</td></tr>\n";
3152         }
3153         print "</table>\n\n" .
3154               "</div>\n";
3155         print "<div class=\"page_body\">";
3156         my $comment = $tag{'comment'};
3157         foreach my $line (@$comment) {
3158                 chomp $line;
3159                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3160         }
3161         print "</div>\n";
3162         git_footer_html();
3163 }
3164
3165 sub git_blame2 {
3166         my $fd;
3167         my $ftype;
3168
3169         my ($have_blame) = gitweb_check_feature('blame');
3170         if (!$have_blame) {
3171                 die_error('403 Permission denied', "Permission denied");
3172         }
3173         die_error('404 Not Found', "File name not defined") if (!$file_name);
3174         $hash_base ||= git_get_head_hash($project);
3175         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3176         my %co = parse_commit($hash_base)
3177                 or die_error(undef, "Reading commit failed");
3178         if (!defined $hash) {
3179                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3180                         or die_error(undef, "Error looking up file");
3181         }
3182         $ftype = git_get_type($hash);
3183         if ($ftype !~ "blob") {
3184                 die_error('400 Bad Request', "Object is not a blob");
3185         }
3186         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3187               $file_name, $hash_base)
3188                 or die_error(undef, "Open git-blame failed");
3189         git_header_html();
3190         my $formats_nav =
3191                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3192                         "blob") .
3193                 " | " .
3194                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3195                         "history") .
3196                 " | " .
3197                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3198                         "HEAD");
3199         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3200         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3201         git_print_page_path($file_name, $ftype, $hash_base);
3202         my @rev_color = (qw(light2 dark2));
3203         my $num_colors = scalar(@rev_color);
3204         my $current_color = 0;
3205         my $last_rev;
3206         print <<HTML;
3207 <div class="page_body">
3208 <table class="blame">
3209 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3210 HTML
3211         my %metainfo = ();
3212         while (1) {
3213                 $_ = <$fd>;
3214                 last unless defined $_;
3215                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3216                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3217                 if (!exists $metainfo{$full_rev}) {
3218                         $metainfo{$full_rev} = {};
3219                 }
3220                 my $meta = $metainfo{$full_rev};
3221                 while (<$fd>) {
3222                         last if (s/^\t//);
3223                         if (/^(\S+) (.*)$/) {
3224                                 $meta->{$1} = $2;
3225                         }
3226                 }
3227                 my $data = $_;
3228                 chomp $data;
3229                 my $rev = substr($full_rev, 0, 8);
3230                 my $author = $meta->{'author'};
3231                 my %date = parse_date($meta->{'author-time'},
3232                                       $meta->{'author-tz'});
3233                 my $date = $date{'iso-tz'};
3234                 if ($group_size) {
3235                         $current_color = ++$current_color % $num_colors;
3236                 }
3237                 print "<tr class=\"$rev_color[$current_color]\">\n";
3238                 if ($group_size) {
3239                         print "<td class=\"sha1\"";
3240                         print " title=\"". esc_html($author) . ", $date\"";
3241                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3242                         print ">";
3243                         print $cgi->a({-href => href(action=>"commit",
3244                                                      hash=>$full_rev,
3245                                                      file_name=>$file_name)},
3246                                       esc_html($rev));
3247                         print "</td>\n";
3248                 }
3249                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3250                         or die_error(undef, "Open git-rev-parse failed");
3251                 my $parent_commit = <$dd>;
3252                 close $dd;
3253                 chomp($parent_commit);
3254                 my $blamed = href(action => 'blame',
3255                                   file_name => $meta->{'filename'},
3256                                   hash_base => $parent_commit);
3257                 print "<td class=\"linenr\">";
3258                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3259                                 -id => "l$lineno",
3260                                 -class => "linenr" },
3261                               esc_html($lineno));
3262                 print "</td>";
3263                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3264                 print "</tr>\n";
3265         }
3266         print "</table>\n";
3267         print "</div>";
3268         close $fd
3269                 or print "Reading blob failed\n";
3270         git_footer_html();
3271 }
3272
3273 sub git_blame {
3274         my $fd;
3275
3276         my ($have_blame) = gitweb_check_feature('blame');
3277         if (!$have_blame) {
3278                 die_error('403 Permission denied', "Permission denied");
3279         }
3280         die_error('404 Not Found', "File name not defined") if (!$file_name);
3281         $hash_base ||= git_get_head_hash($project);
3282         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3283         my %co = parse_commit($hash_base)
3284                 or die_error(undef, "Reading commit failed");
3285         if (!defined $hash) {
3286                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3287                         or die_error(undef, "Error lookup file");
3288         }
3289         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3290                 or die_error(undef, "Open git-annotate failed");
3291         git_header_html();
3292         my $formats_nav =
3293                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3294                         "blob") .
3295                 " | " .
3296                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3297                         "history") .
3298                 " | " .
3299                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3300                         "HEAD");
3301         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3302         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3303         git_print_page_path($file_name, 'blob', $hash_base);
3304         print "<div class=\"page_body\">\n";
3305         print <<HTML;
3306 <table class="blame">
3307   <tr>
3308     <th>Commit</th>
3309     <th>Age</th>
3310     <th>Author</th>
3311     <th>Line</th>
3312     <th>Data</th>
3313   </tr>
3314 HTML
3315         my @line_class = (qw(light dark));
3316         my $line_class_len = scalar (@line_class);
3317         my $line_class_num = $#line_class;
3318         while (my $line = <$fd>) {
3319                 my $long_rev;
3320                 my $short_rev;
3321                 my $author;
3322                 my $time;
3323                 my $lineno;
3324                 my $data;
3325                 my $age;
3326                 my $age_str;
3327                 my $age_class;
3328
3329                 chomp $line;
3330                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3331
3332                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3333                         $long_rev = $1;
3334                         $author   = $2;
3335                         $time     = $3;
3336                         $lineno   = $4;
3337                         $data     = $5;
3338                 } else {
3339                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3340                         next;
3341                 }
3342                 $short_rev  = substr ($long_rev, 0, 8);
3343                 $age        = time () - $time;
3344                 $age_str    = age_string ($age);
3345                 $age_str    =~ s/ /&nbsp;/g;
3346                 $age_class  = age_class($age);
3347                 $author     = esc_html ($author);
3348                 $author     =~ s/ /&nbsp;/g;
3349
3350                 $data = untabify($data);
3351                 $data = esc_html ($data);
3352
3353                 print <<HTML;
3354   <tr class="$line_class[$line_class_num]">
3355     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3356     <td class="$age_class">$age_str</td>
3357     <td>$author</td>
3358     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3359     <td class="pre">$data</td>
3360   </tr>
3361 HTML
3362         } # while (my $line = <$fd>)
3363         print "</table>\n\n";
3364         close $fd
3365                 or print "Reading blob failed.\n";
3366         print "</div>";
3367         git_footer_html();
3368 }
3369
3370 sub git_tags {
3371         my $head = git_get_head_hash($project);
3372         git_header_html();
3373         git_print_page_nav('','', $head,undef,$head);
3374         git_print_header_div('summary', $project);
3375
3376         my @tagslist = git_get_tags_list();
3377         if (@tagslist) {
3378                 git_tags_body(\@tagslist);
3379         }
3380         git_footer_html();
3381 }
3382
3383 sub git_heads {
3384         my $head = git_get_head_hash($project);
3385         git_header_html();
3386         git_print_page_nav('','', $head,undef,$head);
3387         git_print_header_div('summary', $project);
3388
3389         my @headslist = git_get_heads_list();
3390         if (@headslist) {
3391                 git_heads_body(\@headslist, $head);
3392         }
3393         git_footer_html();
3394 }
3395
3396 sub git_blob_plain {
3397         my $expires;
3398
3399         if (!defined $hash) {
3400                 if (defined $file_name) {
3401                         my $base = $hash_base || git_get_head_hash($project);
3402                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3403                                 or die_error(undef, "Error lookup file");
3404                 } else {
3405                         die_error(undef, "No file name defined");
3406                 }
3407         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3408                 # blobs defined by non-textual hash id's can be cached
3409                 $expires = "+1d";
3410         }
3411
3412         my $type = shift;
3413         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3414                 or die_error(undef, "Couldn't cat $file_name, $hash");
3415
3416         $type ||= blob_mimetype($fd, $file_name);
3417
3418         # save as filename, even when no $file_name is given
3419         my $save_as = "$hash";
3420         if (defined $file_name) {
3421                 $save_as = $file_name;
3422         } elsif ($type =~ m/^text\//) {
3423                 $save_as .= '.txt';
3424         }
3425
3426         print $cgi->header(
3427                 -type => "$type",
3428                 -expires=>$expires,
3429                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3430         undef $/;
3431         binmode STDOUT, ':raw';
3432         print <$fd>;
3433         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3434         $/ = "\n";
3435         close $fd;
3436 }
3437
3438 sub git_blob {
3439         my $expires;
3440
3441         if (!defined $hash) {
3442                 if (defined $file_name) {
3443                         my $base = $hash_base || git_get_head_hash($project);
3444                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3445                                 or die_error(undef, "Error lookup file");
3446                 } else {
3447                         die_error(undef, "No file name defined");
3448                 }
3449         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3450                 # blobs defined by non-textual hash id's can be cached
3451                 $expires = "+1d";
3452         }
3453
3454         my ($have_blame) = gitweb_check_feature('blame');
3455         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3456                 or die_error(undef, "Couldn't cat $file_name, $hash");
3457         my $mimetype = blob_mimetype($fd, $file_name);
3458         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3459                 close $fd;
3460                 return git_blob_plain($mimetype);
3461         }
3462         # we can have blame only for text/* mimetype
3463         $have_blame &&= ($mimetype =~ m!^text/!);
3464
3465         git_header_html(undef, $expires);
3466         my $formats_nav = '';
3467         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3468                 if (defined $file_name) {
3469                         if ($have_blame) {
3470                                 $formats_nav .=
3471                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3472                                                                hash=>$hash, file_name=>$file_name)},
3473                                                 "blame") .
3474                                         " | ";
3475                         }
3476                         $formats_nav .=
3477                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3478                                                        hash=>$hash, file_name=>$file_name)},
3479                                         "history") .
3480                                 " | " .
3481                                 $cgi->a({-href => href(action=>"blob_plain",
3482                                                        hash=>$hash, file_name=>$file_name)},
3483                                         "raw") .
3484                                 " | " .
3485                                 $cgi->a({-href => href(action=>"blob",
3486                                                        hash_base=>"HEAD", file_name=>$file_name)},
3487                                         "HEAD");
3488                 } else {
3489                         $formats_nav .=
3490                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3491                 }
3492                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3493                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3494         } else {
3495                 print "<div class=\"page_nav\">\n" .
3496                       "<br/><br/></div>\n" .
3497                       "<div class=\"title\">$hash</div>\n";
3498         }
3499         git_print_page_path($file_name, "blob", $hash_base);
3500         print "<div class=\"page_body\">\n";
3501         if ($mimetype =~ m!^text/!) {
3502                 my $nr;
3503                 while (my $line = <$fd>) {
3504                         chomp $line;
3505                         $nr++;
3506                         $line = untabify($line);
3507                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3508                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3509                 }
3510         } elsif ($mimetype =~ m!^image/!) {
3511                 print qq!<img type="$mimetype"!;
3512                 if ($file_name) {
3513                         print qq! alt="$file_name" title="$file_name"!;
3514                 }
3515                 print qq! src="! .
3516                       href(action=>"blob_plain", hash=>$hash,
3517                            hash_base=>$hash_base, file_name=>$file_name) .
3518                       qq!" />\n!;
3519         }
3520         close $fd
3521                 or print "Reading blob failed.\n";
3522         print "</div>";
3523         git_footer_html();
3524 }
3525
3526 sub git_tree {
3527         my $have_snapshot = gitweb_have_snapshot();
3528
3529         if (!defined $hash_base) {
3530                 $hash_base = "HEAD";
3531         }
3532         if (!defined $hash) {
3533                 if (defined $file_name) {
3534                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3535                 } else {
3536                         $hash = $hash_base;
3537                 }
3538         }
3539         $/ = "\0";
3540         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3541                 or die_error(undef, "Open git-ls-tree failed");
3542         my @entries = map { chomp; $_ } <$fd>;
3543         close $fd or die_error(undef, "Reading tree failed");
3544         $/ = "\n";
3545
3546         my $refs = git_get_references();
3547         my $ref = format_ref_marker($refs, $hash_base);
3548         git_header_html();
3549         my $basedir = '';
3550         my ($have_blame) = gitweb_check_feature('blame');
3551         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3552                 my @views_nav = ();
3553                 if (defined $file_name) {
3554                         push @views_nav,
3555                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3556                                                        hash=>$hash, file_name=>$file_name)},
3557                                         "history"),
3558                                 $cgi->a({-href => href(action=>"tree",
3559                                                        hash_base=>"HEAD", file_name=>$file_name)},
3560                                         "HEAD"),
3561                 }
3562                 if ($have_snapshot) {
3563                         # FIXME: Should be available when we have no hash base as well.
3564                         push @views_nav,
3565                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3566                                         "snapshot");
3567                 }
3568                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3569                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3570         } else {
3571                 undef $hash_base;
3572                 print "<div class=\"page_nav\">\n";
3573                 print "<br/><br/></div>\n";
3574                 print "<div class=\"title\">$hash</div>\n";
3575         }
3576         if (defined $file_name) {
3577                 $basedir = $file_name;
3578                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3579                         $basedir .= '/';
3580                 }
3581         }
3582         git_print_page_path($file_name, 'tree', $hash_base);
3583         print "<div class=\"page_body\">\n";
3584         print "<table cellspacing=\"0\">\n";
3585         my $alternate = 1;
3586         # '..' (top directory) link if possible
3587         if (defined $hash_base &&
3588             defined $file_name && $file_name =~ m![^/]+$!) {
3589                 if ($alternate) {
3590                         print "<tr class=\"dark\">\n";
3591                 } else {
3592                         print "<tr class=\"light\">\n";
3593                 }
3594                 $alternate ^= 1;
3595
3596                 my $up = $file_name;
3597                 $up =~ s!/?[^/]+$!!;
3598                 undef $up unless $up;
3599                 # based on git_print_tree_entry
3600                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3601                 print '<td class="list">';
3602                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3603                                              file_name=>$up)},
3604                               "..");
3605                 print "</td>\n";
3606                 print "<td class=\"link\"></td>\n";
3607
3608                 print "</tr>\n";
3609         }
3610         foreach my $line (@entries) {
3611                 my %t = parse_ls_tree_line($line, -z => 1);
3612
3613                 if ($alternate) {
3614                         print "<tr class=\"dark\">\n";
3615                 } else {
3616                         print "<tr class=\"light\">\n";
3617                 }
3618                 $alternate ^= 1;
3619
3620                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3621
3622                 print "</tr>\n";
3623         }
3624         print "</table>\n" .
3625               "</div>";
3626         git_footer_html();
3627 }
3628
3629 sub git_snapshot {
3630         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3631         my $have_snapshot = (defined $ctype && defined $suffix);
3632         if (!$have_snapshot) {
3633                 die_error('403 Permission denied', "Permission denied");
3634         }
3635
3636         if (!defined $hash) {
3637                 $hash = git_get_head_hash($project);
3638         }
3639
3640         my $filename = to_utf8(basename($project)) . "-$hash.tar.$suffix";
3641
3642         print $cgi->header(
3643                 -type => "application/$ctype",
3644                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3645                 -status => '200 OK');
3646
3647         my $git = git_cmd_str();
3648         my $name = $project;
3649         $name =~ s/\047/\047\\\047\047/g;
3650         open my $fd, "-|",
3651                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3652                 or die_error(undef, "Execute git-tar-tree failed");
3653         binmode STDOUT, ':raw';
3654         print <$fd>;
3655         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3656         close $fd;
3657
3658 }
3659
3660 sub git_log {
3661         my $head = git_get_head_hash($project);
3662         if (!defined $hash) {
3663                 $hash = $head;
3664         }
3665         if (!defined $page) {
3666                 $page = 0;
3667         }
3668         my $refs = git_get_references();
3669
3670         my @commitlist = parse_commits($hash, 101, (100 * $page));
3671
3672         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3673
3674         git_header_html();
3675         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3676
3677         if (!@commitlist) {
3678                 my %co = parse_commit($hash);
3679
3680                 git_print_header_div('summary', $project);
3681                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3682         }
3683         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3684         for (my $i = 0; $i <= $to; $i++) {
3685                 my %co = %{$commitlist[$i]};
3686                 next if !%co;
3687                 my $commit = $co{'id'};
3688                 my $ref = format_ref_marker($refs, $commit);
3689                 my %ad = parse_date($co{'author_epoch'});
3690                 git_print_header_div('commit',
3691                                "<span class=\"age\">$co{'age_string'}</span>" .
3692                                esc_html($co{'title'}) . $ref,
3693                                $commit);
3694                 print "<div class=\"title_text\">\n" .
3695                       "<div class=\"log_link\">\n" .
3696                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3697                       " | " .
3698                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3699                       " | " .
3700                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3701                       "<br/>\n" .
3702                       "</div>\n" .
3703                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3704                       "</div>\n";
3705
3706                 print "<div class=\"log_body\">\n";
3707                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3708                 print "</div>\n";
3709         }
3710         if ($#commitlist >= 100) {
3711                 print "<div class=\"page_nav\">\n";
3712                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3713                                -accesskey => "n", -title => "Alt-n"}, "next");
3714                 print "</div>\n";
3715         }
3716         git_footer_html();
3717 }
3718
3719 sub git_commit {
3720         $hash ||= $hash_base || "HEAD";
3721         my %co = parse_commit($hash);
3722         if (!%co) {
3723                 die_error(undef, "Unknown commit object");
3724         }
3725         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3726         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3727
3728         my $parent  = $co{'parent'};
3729         my $parents = $co{'parents'}; # listref
3730
3731         # we need to prepare $formats_nav before any parameter munging
3732         my $formats_nav;
3733         if (!defined $parent) {
3734                 # --root commitdiff
3735                 $formats_nav .= '(initial)';
3736         } elsif (@$parents == 1) {
3737                 # single parent commit
3738                 $formats_nav .=
3739                         '(parent: ' .
3740                         $cgi->a({-href => href(action=>"commit",
3741                                                hash=>$parent)},
3742                                 esc_html(substr($parent, 0, 7))) .
3743                         ')';
3744         } else {
3745                 # merge commit
3746                 $formats_nav .=
3747                         '(merge: ' .
3748                         join(' ', map {
3749                                 $cgi->a({-href => href(action=>"commit",
3750                                                        hash=>$_)},
3751                                         esc_html(substr($_, 0, 7)));
3752                         } @$parents ) .
3753                         ')';
3754         }
3755
3756         if (!defined $parent) {
3757                 $parent = "--root";
3758         }
3759         my @difftree;
3760         if (@$parents <= 1) {
3761                 # difftree output is not printed for merges
3762                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3763                         @diff_opts, $parent, $hash, "--"
3764                         or die_error(undef, "Open git-diff-tree failed");
3765                 @difftree = map { chomp; $_ } <$fd>;
3766                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3767         }
3768
3769         # non-textual hash id's can be cached
3770         my $expires;
3771         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3772                 $expires = "+1d";
3773         }
3774         my $refs = git_get_references();
3775         my $ref = format_ref_marker($refs, $co{'id'});
3776
3777         my $have_snapshot = gitweb_have_snapshot();
3778
3779         git_header_html(undef, $expires);
3780         git_print_page_nav('commit', '',
3781                            $hash, $co{'tree'}, $hash,
3782                            $formats_nav);
3783
3784         if (defined $co{'parent'}) {
3785                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3786         } else {
3787                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3788         }
3789         print "<div class=\"title_text\">\n" .
3790               "<table cellspacing=\"0\">\n";
3791         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3792               "<tr>" .
3793               "<td></td><td> $ad{'rfc2822'}";
3794         if ($ad{'hour_local'} < 6) {
3795                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3796                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3797         } else {
3798                 printf(" (%02d:%02d %s)",
3799                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3800         }
3801         print "</td>" .
3802               "</tr>\n";
3803         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3804         print "<tr><td></td><td> $cd{'rfc2822'}" .
3805               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3806               "</td></tr>\n";
3807         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3808         print "<tr>" .
3809               "<td>tree</td>" .
3810               "<td class=\"sha1\">" .
3811               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3812                        class => "list"}, $co{'tree'}) .
3813               "</td>" .
3814               "<td class=\"link\">" .
3815               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3816                       "tree");
3817         if ($have_snapshot) {
3818                 print " | " .
3819                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3820         }
3821         print "</td>" .
3822               "</tr>\n";
3823
3824         foreach my $par (@$parents) {
3825                 print "<tr>" .
3826                       "<td>parent</td>" .
3827                       "<td class=\"sha1\">" .
3828                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3829                                class => "list"}, $par) .
3830                       "</td>" .
3831                       "<td class=\"link\">" .
3832                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3833                       " | " .
3834                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3835                       "</td>" .
3836                       "</tr>\n";
3837         }
3838         print "</table>".
3839               "</div>\n";
3840
3841         print "<div class=\"page_body\">\n";
3842         git_print_log($co{'comment'});
3843         print "</div>\n";
3844
3845         if (@$parents <= 1) {
3846                 # do not output difftree/whatchanged for merges
3847                 git_difftree_body(\@difftree, $hash, $parent);
3848         }
3849
3850         git_footer_html();
3851 }
3852
3853 sub git_object {
3854         # object is defined by:
3855         # - hash or hash_base alone
3856         # - hash_base and file_name
3857         my $type;
3858
3859         # - hash or hash_base alone
3860         if ($hash || ($hash_base && !defined $file_name)) {
3861                 my $object_id = $hash || $hash_base;
3862
3863                 my $git_command = git_cmd_str();
3864                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3865                         or die_error('404 Not Found', "Object does not exist");
3866                 $type = <$fd>;
3867                 chomp $type;
3868                 close $fd
3869                         or die_error('404 Not Found', "Object does not exist");
3870
3871         # - hash_base and file_name
3872         } elsif ($hash_base && defined $file_name) {
3873                 $file_name =~ s,/+$,,;
3874
3875                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3876                         or die_error('404 Not Found', "Base object does not exist");
3877
3878                 # here errors should not hapen
3879                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3880                         or die_error(undef, "Open git-ls-tree failed");
3881                 my $line = <$fd>;
3882                 close $fd;
3883
3884                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3885                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3886                         die_error('404 Not Found', "File or directory for given base does not exist");
3887                 }
3888                 $type = $2;
3889                 $hash = $3;
3890         } else {
3891                 die_error('404 Not Found', "Not enough information to find object");
3892         }
3893
3894         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3895                                           hash=>$hash, hash_base=>$hash_base,
3896                                           file_name=>$file_name),
3897                              -status => '302 Found');
3898 }
3899
3900 sub git_blobdiff {
3901         my $format = shift || 'html';
3902
3903         my $fd;
3904         my @difftree;
3905         my %diffinfo;
3906         my $expires;
3907
3908         # preparing $fd and %diffinfo for git_patchset_body
3909         # new style URI
3910         if (defined $hash_base && defined $hash_parent_base) {
3911                 if (defined $file_name) {
3912                         # read raw output
3913                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3914                                 $hash_parent_base, $hash_base,
3915                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
3916                                 or die_error(undef, "Open git-diff-tree failed");
3917                         @difftree = map { chomp; $_ } <$fd>;
3918                         close $fd
3919                                 or die_error(undef, "Reading git-diff-tree failed");
3920                         @difftree
3921                                 or die_error('404 Not Found', "Blob diff not found");
3922
3923                 } elsif (defined $hash &&
3924                          $hash =~ /[0-9a-fA-F]{40}/) {
3925                         # try to find filename from $hash
3926
3927                         # read filtered raw output
3928                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3929                                 $hash_parent_base, $hash_base, "--"
3930                                 or die_error(undef, "Open git-diff-tree failed");
3931                         @difftree =
3932                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3933                                 # $hash == to_id
3934                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3935                                 map { chomp; $_ } <$fd>;
3936                         close $fd
3937                                 or die_error(undef, "Reading git-diff-tree failed");
3938                         @difftree
3939                                 or die_error('404 Not Found', "Blob diff not found");
3940
3941                 } else {
3942                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3943                 }
3944
3945                 if (@difftree > 1) {
3946                         die_error('404 Not Found', "Ambiguous blob diff specification");
3947                 }
3948
3949                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3950                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3951                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3952
3953                 $hash_parent ||= $diffinfo{'from_id'};
3954                 $hash        ||= $diffinfo{'to_id'};
3955
3956                 # non-textual hash id's can be cached
3957                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3958                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3959                         $expires = '+1d';
3960                 }
3961
3962                 # open patch output
3963                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3964                         '-p', ($format eq 'html' ? "--full-index" : ()),
3965                         $hash_parent_base, $hash_base,
3966                         "--", (defined $file_parent ? $file_parent : ()), $file_name
3967                         or die_error(undef, "Open git-diff-tree failed");
3968         }
3969
3970         # old/legacy style URI
3971         if (!%diffinfo && # if new style URI failed
3972             defined $hash && defined $hash_parent) {
3973                 # fake git-diff-tree raw output
3974                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3975                 $diffinfo{'from_id'} = $hash_parent;
3976                 $diffinfo{'to_id'}   = $hash;
3977                 if (defined $file_name) {
3978                         if (defined $file_parent) {
3979                                 $diffinfo{'status'} = '2';
3980                                 $diffinfo{'from_file'} = $file_parent;
3981                                 $diffinfo{'to_file'}   = $file_name;
3982                         } else { # assume not renamed
3983                                 $diffinfo{'status'} = '1';
3984                                 $diffinfo{'from_file'} = $file_name;
3985                                 $diffinfo{'to_file'}   = $file_name;
3986                         }
3987                 } else { # no filename given
3988                         $diffinfo{'status'} = '2';
3989                         $diffinfo{'from_file'} = $hash_parent;
3990                         $diffinfo{'to_file'}   = $hash;
3991                 }
3992
3993                 # non-textual hash id's can be cached
3994                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3995                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3996                         $expires = '+1d';
3997                 }
3998
3999                 # open patch output
4000                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4001                         '-p', ($format eq 'html' ? "--full-index" : ()),
4002                         $hash_parent, $hash, "--"
4003                         or die_error(undef, "Open git-diff failed");
4004         } else  {
4005                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4006                         unless %diffinfo;
4007         }
4008
4009         # header
4010         if ($format eq 'html') {
4011                 my $formats_nav =
4012                         $cgi->a({-href => href(action=>"blobdiff_plain",
4013                                                hash=>$hash, hash_parent=>$hash_parent,
4014                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4015                                                file_name=>$file_name, file_parent=>$file_parent)},
4016                                 "raw");
4017                 git_header_html(undef, $expires);
4018                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4019                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4020                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4021                 } else {
4022                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4023                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4024                 }
4025                 if (defined $file_name) {
4026                         git_print_page_path($file_name, "blob", $hash_base);
4027                 } else {
4028                         print "<div class=\"page_path\"></div>\n";
4029                 }
4030
4031         } elsif ($format eq 'plain') {
4032                 print $cgi->header(
4033                         -type => 'text/plain',
4034                         -charset => 'utf-8',
4035                         -expires => $expires,
4036                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4037
4038                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4039
4040         } else {
4041                 die_error(undef, "Unknown blobdiff format");
4042         }
4043
4044         # patch
4045         if ($format eq 'html') {
4046                 print "<div class=\"page_body\">\n";
4047
4048                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4049                 close $fd;
4050
4051                 print "</div>\n"; # class="page_body"
4052                 git_footer_html();
4053
4054         } else {
4055                 while (my $line = <$fd>) {
4056                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4057                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4058
4059                         print $line;
4060
4061                         last if $line =~ m!^\+\+\+!;
4062                 }
4063                 local $/ = undef;
4064                 print <$fd>;
4065                 close $fd;
4066         }
4067 }
4068
4069 sub git_blobdiff_plain {
4070         git_blobdiff('plain');
4071 }
4072
4073 sub git_commitdiff {
4074         my $format = shift || 'html';
4075         $hash ||= $hash_base || "HEAD";
4076         my %co = parse_commit($hash);
4077         if (!%co) {
4078                 die_error(undef, "Unknown commit object");
4079         }
4080
4081         # we need to prepare $formats_nav before any parameter munging
4082         my $formats_nav;
4083         if ($format eq 'html') {
4084                 $formats_nav =
4085                         $cgi->a({-href => href(action=>"commitdiff_plain",
4086                                                hash=>$hash, hash_parent=>$hash_parent)},
4087                                 "raw");
4088
4089                 if (defined $hash_parent) {
4090                         # commitdiff with two commits given
4091                         my $hash_parent_short = $hash_parent;
4092                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4093                                 $hash_parent_short = substr($hash_parent, 0, 7);
4094                         }
4095                         $formats_nav .=
4096                                 ' (from: ' .
4097                                 $cgi->a({-href => href(action=>"commitdiff",
4098                                                        hash=>$hash_parent)},
4099                                         esc_html($hash_parent_short)) .
4100                                 ')';
4101                 } elsif (!$co{'parent'}) {
4102                         # --root commitdiff
4103                         $formats_nav .= ' (initial)';
4104                 } elsif (scalar @{$co{'parents'}} == 1) {
4105                         # single parent commit
4106                         $formats_nav .=
4107                                 ' (parent: ' .
4108                                 $cgi->a({-href => href(action=>"commitdiff",
4109                                                        hash=>$co{'parent'})},
4110                                         esc_html(substr($co{'parent'}, 0, 7))) .
4111                                 ')';
4112                 } else {
4113                         # merge commit
4114                         $formats_nav .=
4115                                 ' (merge: ' .
4116                                 join(' ', map {
4117                                         $cgi->a({-href => href(action=>"commitdiff",
4118                                                                hash=>$_)},
4119                                                 esc_html(substr($_, 0, 7)));
4120                                 } @{$co{'parents'}} ) .
4121                                 ')';
4122                 }
4123         }
4124
4125         if (!defined $hash_parent) {
4126                 $hash_parent = $co{'parent'} || '--root';
4127         }
4128
4129         # read commitdiff
4130         my $fd;
4131         my @difftree;
4132         if ($format eq 'html') {
4133                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4134                         "--no-commit-id", "--patch-with-raw", "--full-index",
4135                         $hash_parent, $hash, "--"
4136                         or die_error(undef, "Open git-diff-tree failed");
4137
4138                 while (my $line = <$fd>) {
4139                         chomp $line;
4140                         # empty line ends raw part of diff-tree output
4141                         last unless $line;
4142                         push @difftree, $line;
4143                 }
4144
4145         } elsif ($format eq 'plain') {
4146                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4147                         '-p', $hash_parent, $hash, "--"
4148                         or die_error(undef, "Open git-diff-tree failed");
4149
4150         } else {
4151                 die_error(undef, "Unknown commitdiff format");
4152         }
4153
4154         # non-textual hash id's can be cached
4155         my $expires;
4156         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4157                 $expires = "+1d";
4158         }
4159
4160         # write commit message
4161         if ($format eq 'html') {
4162                 my $refs = git_get_references();
4163                 my $ref = format_ref_marker($refs, $co{'id'});
4164
4165                 git_header_html(undef, $expires);
4166                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4167                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4168                 git_print_authorship(\%co);
4169                 print "<div class=\"page_body\">\n";
4170                 if (@{$co{'comment'}} > 1) {
4171                         print "<div class=\"log\">\n";
4172                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4173                         print "</div>\n"; # class="log"
4174                 }
4175
4176         } elsif ($format eq 'plain') {
4177                 my $refs = git_get_references("tags");
4178                 my $tagname = git_get_rev_name_tags($hash);
4179                 my $filename = basename($project) . "-$hash.patch";
4180
4181                 print $cgi->header(
4182                         -type => 'text/plain',
4183                         -charset => 'utf-8',
4184                         -expires => $expires,
4185                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4186                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4187                 print <<TEXT;
4188 From: $co{'author'}
4189 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4190 Subject: $co{'title'}
4191 TEXT
4192                 print "X-Git-Tag: $tagname\n" if $tagname;
4193                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4194
4195                 foreach my $line (@{$co{'comment'}}) {
4196                         print "$line\n";
4197                 }
4198                 print "---\n\n";
4199         }
4200
4201         # write patch
4202         if ($format eq 'html') {
4203                 git_difftree_body(\@difftree, $hash, $hash_parent);
4204                 print "<br/>\n";
4205
4206                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4207                 close $fd;
4208                 print "</div>\n"; # class="page_body"
4209                 git_footer_html();
4210
4211         } elsif ($format eq 'plain') {
4212                 local $/ = undef;
4213                 print <$fd>;
4214                 close $fd
4215                         or print "Reading git-diff-tree failed\n";
4216         }
4217 }
4218
4219 sub git_commitdiff_plain {
4220         git_commitdiff('plain');
4221 }
4222
4223 sub git_history {
4224         if (!defined $hash_base) {
4225                 $hash_base = git_get_head_hash($project);
4226         }
4227         if (!defined $page) {
4228                 $page = 0;
4229         }
4230         my $ftype;
4231         my %co = parse_commit($hash_base);
4232         if (!%co) {
4233                 die_error(undef, "Unknown commit object");
4234         }
4235
4236         my $refs = git_get_references();
4237         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4238
4239         if (!defined $hash && defined $file_name) {
4240                 $hash = git_get_hash_by_path($hash_base, $file_name);
4241         }
4242         if (defined $hash) {
4243                 $ftype = git_get_type($hash);
4244         }
4245
4246         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4247
4248         my $paging_nav = '';
4249         if ($page > 0) {
4250                 $paging_nav .=
4251                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4252                                                file_name=>$file_name)},
4253                                 "first");
4254                 $paging_nav .= " &sdot; " .
4255                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4256                                                file_name=>$file_name, page=>$page-1),
4257                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4258         } else {
4259                 $paging_nav .= "first";
4260                 $paging_nav .= " &sdot; prev";
4261         }
4262         if ($#commitlist >= 100) {
4263                 $paging_nav .= " &sdot; " .
4264                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4265                                                file_name=>$file_name, page=>$page+1),
4266                                  -accesskey => "n", -title => "Alt-n"}, "next");
4267         } else {
4268                 $paging_nav .= " &sdot; next";
4269         }
4270         my $next_link = '';
4271         if ($#commitlist >= 100) {
4272                 $next_link =
4273                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4274                                                file_name=>$file_name, page=>$page+1),
4275                                  -accesskey => "n", -title => "Alt-n"}, "next");
4276         }
4277
4278         git_header_html();
4279         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4280         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4281         git_print_page_path($file_name, $ftype, $hash_base);
4282
4283         git_history_body(\@commitlist, 0, 99,
4284                          $refs, $hash_base, $ftype, $next_link);
4285
4286         git_footer_html();
4287 }
4288
4289 sub git_search {
4290         my ($have_search) = gitweb_check_feature('search');
4291         if (!$have_search) {
4292                 die_error('403 Permission denied', "Permission denied");
4293         }
4294         if (!defined $searchtext) {
4295                 die_error(undef, "Text field empty");
4296         }
4297         if (!defined $hash) {
4298                 $hash = git_get_head_hash($project);
4299         }
4300         my %co = parse_commit($hash);
4301         if (!%co) {
4302                 die_error(undef, "Unknown commit object");
4303         }
4304         if (!defined $page) {
4305                 $page = 0;
4306         }
4307
4308         $searchtype ||= 'commit';
4309         if ($searchtype eq 'pickaxe') {
4310                 # pickaxe may take all resources of your box and run for several minutes
4311                 # with every query - so decide by yourself how public you make this feature
4312                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4313                 if (!$have_pickaxe) {
4314                         die_error('403 Permission denied', "Permission denied");
4315                 }
4316         }
4317
4318         git_header_html();
4319
4320         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4321                 my $greptype;
4322                 if ($searchtype eq 'commit') {
4323                         $greptype = "--grep=";
4324                 } elsif ($searchtype eq 'author') {
4325                         $greptype = "--author=";
4326                 } elsif ($searchtype eq 'committer') {
4327                         $greptype = "--committer=";
4328                 }
4329                 $greptype .= $searchtext;
4330                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4331
4332                 my $paging_nav = '';
4333                 if ($page > 0) {
4334                         $paging_nav .=
4335                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4336                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4337                                         "first");
4338                         $paging_nav .= " &sdot; " .
4339                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4340                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4341                                                        page=>$page-1),
4342                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4343                 } else {
4344                         $paging_nav .= "first";
4345                         $paging_nav .= " &sdot; prev";
4346                 }
4347                 if ($#commitlist >= 100) {
4348                         $paging_nav .= " &sdot; " .
4349                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4350                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4351                                                        page=>$page+1),
4352                                          -accesskey => "n", -title => "Alt-n"}, "next");
4353                 } else {
4354                         $paging_nav .= " &sdot; next";
4355                 }
4356                 my $next_link = '';
4357                 if ($#commitlist >= 100) {
4358                         $next_link =
4359                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4360                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4361                                                        page=>$page+1),
4362                                          -accesskey => "n", -title => "Alt-n"}, "next");
4363                 }
4364
4365                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4366                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4367                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4368         }
4369
4370         if ($searchtype eq 'pickaxe') {
4371                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4372                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4373
4374                 print "<table cellspacing=\"0\">\n";
4375                 my $alternate = 1;
4376                 $/ = "\n";
4377                 my $git_command = git_cmd_str();
4378                 open my $fd, "-|", "$git_command rev-list $hash | " .
4379                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4380                 undef %co;
4381                 my @files;
4382                 while (my $line = <$fd>) {
4383                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4384                                 my %set;
4385                                 $set{'file'} = $6;
4386                                 $set{'from_id'} = $3;
4387                                 $set{'to_id'} = $4;
4388                                 $set{'id'} = $set{'to_id'};
4389                                 if ($set{'id'} =~ m/0{40}/) {
4390                                         $set{'id'} = $set{'from_id'};
4391                                 }
4392                                 if ($set{'id'} =~ m/0{40}/) {
4393                                         next;
4394                                 }
4395                                 push @files, \%set;
4396                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4397                                 if (%co) {
4398                                         if ($alternate) {
4399                                                 print "<tr class=\"dark\">\n";
4400                                         } else {
4401                                                 print "<tr class=\"light\">\n";
4402                                         }
4403                                         $alternate ^= 1;
4404                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4405                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4406                                               "<td>" .
4407                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4408                                                       -class => "list subject"},
4409                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4410                                         while (my $setref = shift @files) {
4411                                                 my %set = %$setref;
4412                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4413                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4414                                                               -class => "list"},
4415                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4416                                                       "<br/>\n";
4417                                         }
4418                                         print "</td>\n" .
4419                                               "<td class=\"link\">" .
4420                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4421                                               " | " .
4422                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4423                                         print "</td>\n" .
4424                                               "</tr>\n";
4425                                 }
4426                                 %co = parse_commit($1);
4427                         }
4428                 }
4429                 close $fd;
4430
4431                 print "</table>\n";
4432         }
4433         git_footer_html();
4434 }
4435
4436 sub git_search_help {
4437         git_header_html();
4438         git_print_page_nav('','', $hash,$hash,$hash);
4439         print <<EOT;
4440 <dl>
4441 <dt><b>commit</b></dt>
4442 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4443 <dt><b>author</b></dt>
4444 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4445 <dt><b>committer</b></dt>
4446 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4447 EOT
4448         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4449         if ($have_pickaxe) {
4450                 print <<EOT;
4451 <dt><b>pickaxe</b></dt>
4452 <dd>All commits that caused the string to appear or disappear from any file (changes that
4453 added, removed or "modified" the string) will be listed. This search can take a while and
4454 takes a lot of strain on the server, so please use it wisely.</dd>
4455 EOT
4456         }
4457         print "</dl>\n";
4458         git_footer_html();
4459 }
4460
4461 sub git_shortlog {
4462         my $head = git_get_head_hash($project);
4463         if (!defined $hash) {
4464                 $hash = $head;
4465         }
4466         if (!defined $page) {
4467                 $page = 0;
4468         }
4469         my $refs = git_get_references();
4470
4471         my @commitlist = parse_commits($hash, 101, (100 * $page));
4472
4473         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4474         my $next_link = '';
4475         if ($#commitlist >= 100) {
4476                 $next_link =
4477                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4478                                  -accesskey => "n", -title => "Alt-n"}, "next");
4479         }
4480
4481         git_header_html();
4482         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4483         git_print_header_div('summary', $project);
4484
4485         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4486
4487         git_footer_html();
4488 }
4489
4490 ## ......................................................................
4491 ## feeds (RSS, Atom; OPML)
4492
4493 sub git_feed {
4494         my $format = shift || 'atom';
4495         my ($have_blame) = gitweb_check_feature('blame');
4496
4497         # Atom: http://www.atomenabled.org/developers/syndication/
4498         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4499         if ($format ne 'rss' && $format ne 'atom') {
4500                 die_error(undef, "Unknown web feed format");
4501         }
4502
4503         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4504         my $head = $hash || 'HEAD';
4505         my @commitlist = parse_commits($head, 150);
4506
4507         my %latest_commit;
4508         my %latest_date;
4509         my $content_type = "application/$format+xml";
4510         if (defined $cgi->http('HTTP_ACCEPT') &&
4511                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4512                 # browser (feed reader) prefers text/xml
4513                 $content_type = 'text/xml';
4514         }
4515         if (defined($commitlist[0])) {
4516                 %latest_commit = %{$commitlist[0]};
4517                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4518                 print $cgi->header(
4519                         -type => $content_type,
4520                         -charset => 'utf-8',
4521                         -last_modified => $latest_date{'rfc2822'});
4522         } else {
4523                 print $cgi->header(
4524                         -type => $content_type,
4525                         -charset => 'utf-8');
4526         }
4527
4528         # Optimization: skip generating the body if client asks only
4529         # for Last-Modified date.
4530         return if ($cgi->request_method() eq 'HEAD');
4531
4532         # header variables
4533         my $title = "$site_name - $project/$action";
4534         my $feed_type = 'log';
4535         if (defined $hash) {
4536                 $title .= " - '$hash'";
4537                 $feed_type = 'branch log';
4538                 if (defined $file_name) {
4539                         $title .= " :: $file_name";
4540                         $feed_type = 'history';
4541                 }
4542         } elsif (defined $file_name) {
4543                 $title .= " - $file_name";
4544                 $feed_type = 'history';
4545         }
4546         $title .= " $feed_type";
4547         my $descr = git_get_project_description($project);
4548         if (defined $descr) {
4549                 $descr = esc_html($descr);
4550         } else {
4551                 $descr = "$project " .
4552                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4553                          " feed";
4554         }
4555         my $owner = git_get_project_owner($project);
4556         $owner = esc_html($owner);
4557
4558         #header
4559         my $alt_url;
4560         if (defined $file_name) {
4561                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4562         } elsif (defined $hash) {
4563                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4564         } else {
4565                 $alt_url = href(-full=>1, action=>"summary");
4566         }
4567         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4568         if ($format eq 'rss') {
4569                 print <<XML;
4570 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4571 <channel>
4572 XML
4573                 print "<title>$title</title>\n" .
4574                       "<link>$alt_url</link>\n" .
4575                       "<description>$descr</description>\n" .
4576                       "<language>en</language>\n";
4577         } elsif ($format eq 'atom') {
4578                 print <<XML;
4579 <feed xmlns="http://www.w3.org/2005/Atom">
4580 XML
4581                 print "<title>$title</title>\n" .
4582                       "<subtitle>$descr</subtitle>\n" .
4583                       '<link rel="alternate" type="text/html" href="' .
4584                       $alt_url . '" />' . "\n" .
4585                       '<link rel="self" type="' . $content_type . '" href="' .
4586                       $cgi->self_url() . '" />' . "\n" .
4587                       "<id>" . href(-full=>1) . "</id>\n" .
4588                       # use project owner for feed author
4589                       "<author><name>$owner</name></author>\n";
4590                 if (defined $favicon) {
4591                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4592                 }
4593                 if (defined $logo_url) {
4594                         # not twice as wide as tall: 72 x 27 pixels
4595                         print "<logo>" . esc_url($logo) . "</logo>\n";
4596                 }
4597                 if (! %latest_date) {
4598                         # dummy date to keep the feed valid until commits trickle in:
4599                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4600                 } else {
4601                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4602                 }
4603         }
4604
4605         # contents
4606         for (my $i = 0; $i <= $#commitlist; $i++) {
4607                 my %co = %{$commitlist[$i]};
4608                 my $commit = $co{'id'};
4609                 # we read 150, we always show 30 and the ones more recent than 48 hours
4610                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4611                         last;
4612                 }
4613                 my %cd = parse_date($co{'author_epoch'});
4614
4615                 # get list of changed files
4616                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4617                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4618                         or next;
4619                 my @difftree = map { chomp; $_ } <$fd>;
4620                 close $fd
4621                         or next;
4622
4623                 # print element (entry, item)
4624                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4625                 if ($format eq 'rss') {
4626                         print "<item>\n" .
4627                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4628                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4629                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4630                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4631                               "<link>$co_url</link>\n" .
4632                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4633                               "<content:encoded>" .
4634                               "<![CDATA[\n";
4635                 } elsif ($format eq 'atom') {
4636                         print "<entry>\n" .
4637                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4638                               "<updated>$cd{'iso-8601'}</updated>\n" .
4639                               "<author>\n" .
4640                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4641                         if ($co{'author_email'}) {
4642                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4643                         }
4644                         print "</author>\n" .
4645                               # use committer for contributor
4646                               "<contributor>\n" .
4647                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4648                         if ($co{'committer_email'}) {
4649                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4650                         }
4651                         print "</contributor>\n" .
4652                               "<published>$cd{'iso-8601'}</published>\n" .
4653                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4654                               "<id>$co_url</id>\n" .
4655                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4656                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4657                 }
4658                 my $comment = $co{'comment'};
4659                 print "<pre>\n";
4660                 foreach my $line (@$comment) {
4661                         $line = esc_html($line);
4662                         print "$line\n";
4663                 }
4664                 print "</pre><ul>\n";
4665                 foreach my $difftree_line (@difftree) {
4666                         my %difftree = parse_difftree_raw_line($difftree_line);
4667                         next if !$difftree{'from_id'};
4668
4669                         my $file = $difftree{'file'} || $difftree{'to_file'};
4670
4671                         print "<li>" .
4672                               "[" .
4673                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4674                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4675                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4676                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4677                                       -title => "diff"}, 'D');
4678                         if ($have_blame) {
4679                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4680                                                              file_name=>$file, hash_base=>$commit),
4681                                               -title => "blame"}, 'B');
4682                         }
4683                         # if this is not a feed of a file history
4684                         if (!defined $file_name || $file_name ne $file) {
4685                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4686                                                              file_name=>$file, hash=>$commit),
4687                                               -title => "history"}, 'H');
4688                         }
4689                         $file = esc_path($file);
4690                         print "] ".
4691                               "$file</li>\n";
4692                 }
4693                 if ($format eq 'rss') {
4694                         print "</ul>]]>\n" .
4695                               "</content:encoded>\n" .
4696                               "</item>\n";
4697                 } elsif ($format eq 'atom') {
4698                         print "</ul>\n</div>\n" .
4699                               "</content>\n" .
4700                               "</entry>\n";
4701                 }
4702         }
4703
4704         # end of feed
4705         if ($format eq 'rss') {
4706                 print "</channel>\n</rss>\n";
4707         }       elsif ($format eq 'atom') {
4708                 print "</feed>\n";
4709         }
4710 }
4711
4712 sub git_rss {
4713         git_feed('rss');
4714 }
4715
4716 sub git_atom {
4717         git_feed('atom');
4718 }
4719
4720 sub git_opml {
4721         my @list = git_get_projects_list();
4722
4723         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4724         print <<XML;
4725 <?xml version="1.0" encoding="utf-8"?>
4726 <opml version="1.0">
4727 <head>
4728   <title>$site_name OPML Export</title>
4729 </head>
4730 <body>
4731 <outline text="git RSS feeds">
4732 XML
4733
4734         foreach my $pr (@list) {
4735                 my %proj = %$pr;
4736                 my $head = git_get_head_hash($proj{'path'});
4737                 if (!defined $head) {
4738                         next;
4739                 }
4740                 $git_dir = "$projectroot/$proj{'path'}";
4741                 my %co = parse_commit($head);
4742                 if (!%co) {
4743                         next;
4744                 }
4745
4746                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4747                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4748                 my $html = "$my_url?p=$proj{'path'};a=summary";
4749                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4750         }
4751         print <<XML;
4752 </outline>
4753 </body>
4754 </opml>
4755 XML
4756 }