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