gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # default order of projects list
  75 # valid values are none, project, descr, owner, and age
  76 our $default_projects_order = "project";
  77
  78 # show repository only if this file exists
  79 # (only effective if this variable evaluates to true)
  80 our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82 # only allow viewing of repositories also shown on the overview page
  83 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85 # list of git base URLs used for URL to where fetch project from,
  86 # i.e. full URL is "$git_base_url/$project"
  87 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89 # default blob_plain mimetype and default charset for text/plain blob
  90 our $default_blob_plain_mimetype = 'text/plain';
  91 our $default_text_plain_charset  = undef;
  92
  93 # file to use for guessing MIME types before trying /etc/mime.types
  94 # (relative to the current git repository)
  95 our $mimetypes_file = undef;
  96
  97 # You define site-wide feature defaults here; override them with
  98 # $GITWEB_CONFIG as necessary.
  99 our %feature = (
 100         # feature => {
 101         #       'sub' => feature-sub (subroutine),
 102         #       'override' => allow-override (boolean),
 103         #       'default' => [ default options...] (array reference)}
 104         #
 105         # if feature is overridable (it means that allow-override has true value,
 106         # then feature-sub will be called with default options as parameters;
 107         # return value of feature-sub indicates if to enable specified feature
 108         #
 109         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 110
 111         # Enable the 'blame' blob view, showing the last commit that modified
 112         # each line in the file. This can be very CPU-intensive.
 113
 114         # To enable system wide have in $GITWEB_CONFIG
 115         # $feature{'blame'}{'default'} = [1];
 116         # To have project specific config enable override in $GITWEB_CONFIG
 117         # $feature{'blame'}{'override'} = 1;
 118         # and in project config gitweb.blame = 0|1;
 119         'blame' => {
 120                 'sub' => \&feature_blame,
 121                 'override' => 0,
 122                 'default' => [0]},
 123
 124         # Enable the 'snapshot' link, providing a compressed tarball of any
 125         # tree. This can potentially generate high traffic if you have large
 126         # project.
 127
 128         # To disable system wide have in $GITWEB_CONFIG
 129         # $feature{'snapshot'}{'default'} = [undef];
 130         # To have project specific config enable override in $GITWEB_CONFIG
 131         # $feature{'snapshot'}{'override'} = 1;
 132         # and in project config gitweb.snapshot = none|gzip|bzip2;
 133         'snapshot' => {
 134                 'sub' => \&feature_snapshot,
 135                 'override' => 0,
 136                 #         => [content-encoding, suffix, program]
 137                 'default' => ['x-gzip', 'gz', 'gzip']},
 138
 139         # Enable text search, which will list the commits which match author,
 140         # committer or commit text to a given string.  Enabled by default.
 141         'search' => {
 142                 'override' => 0,
 143                 'default' => [1]},
 144
 145         # Enable the pickaxe search, which will list the commits that modified
 146         # a given string in a file. This can be practical and quite faster
 147         # alternative to 'blame', but still potentially CPU-intensive.
 148
 149         # To enable system wide have in $GITWEB_CONFIG
 150         # $feature{'pickaxe'}{'default'} = [1];
 151         # To have project specific config enable override in $GITWEB_CONFIG
 152         # $feature{'pickaxe'}{'override'} = 1;
 153         # and in project config gitweb.pickaxe = 0|1;
 154         'pickaxe' => {
 155                 'sub' => \&feature_pickaxe,
 156                 'override' => 0,
 157                 'default' => [1]},
 158
 159         # Make gitweb use an alternative format of the URLs which can be
 160         # more readable and natural-looking: project name is embedded
 161         # directly in the path and the query string contains other
 162         # auxiliary information. All gitweb installations recognize
 163         # URL in either format; this configures in which formats gitweb
 164         # generates links.
 165
 166         # To enable system wide have in $GITWEB_CONFIG
 167         # $feature{'pathinfo'}{'default'} = [1];
 168         # Project specific override is not supported.
 169
 170         # Note that you will need to change the default location of CSS,
 171         # favicon, logo and possibly other files to an absolute URL. Also,
 172         # if gitweb.cgi serves as your indexfile, you will need to force
 173         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 174         'pathinfo' => {
 175                 'override' => 0,
 176                 'default' => [0]},
 177
 178         # Make gitweb consider projects in project root subdirectories
 179         # to be forks of existing projects. Given project $projname.git,
 180         # projects matching $projname/*.git will not be shown in the main
 181         # projects list, instead a '+' mark will be added to $projname
 182         # there and a 'forks' view will be enabled for the project, listing
 183         # all the forks. If project list is taken from a file, forks have
 184         # to be listed after the main project.
 185
 186         # To enable system wide have in $GITWEB_CONFIG
 187         # $feature{'forks'}{'default'} = [1];
 188         # Project specific override is not supported.
 189         'forks' => {
 190                 'override' => 0,
 191                 'default' => [0]},
 192 );
 193
 194 sub gitweb_check_feature {
 195         my ($name) = @_;
 196         return unless exists $feature{$name};
 197         my ($sub, $override, @defaults) = (
 198                 $feature{$name}{'sub'},
 199                 $feature{$name}{'override'},
 200                 @{$feature{$name}{'default'}});
 201         if (!$override) { return @defaults; }
 202         if (!defined $sub) {
 203                 warn "feature $name is not overrideable";
 204                 return @defaults;
 205         }
 206         return $sub->(@defaults);
 207 }
 208
 209 sub feature_blame {
 210         my ($val) = git_get_project_config('blame', '--bool');
 211
 212         if ($val eq 'true') {
 213                 return 1;
 214         } elsif ($val eq 'false') {
 215                 return 0;
 216         }
 217
 218         return $_[0];
 219 }
 220
 221 sub feature_snapshot {
 222         my ($ctype, $suffix, $command) = @_;
 223
 224         my ($val) = git_get_project_config('snapshot');
 225
 226         if ($val eq 'gzip') {
 227                 return ('x-gzip', 'gz', 'gzip');
 228         } elsif ($val eq 'bzip2') {
 229                 return ('x-bzip2', 'bz2', 'bzip2');
 230         } elsif ($val eq 'none') {
 231                 return ();
 232         }
 233
 234         return ($ctype, $suffix, $command);
 235 }
 236
 237 sub gitweb_have_snapshot {
 238         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 239         my $have_snapshot = (defined $ctype && defined $suffix);
 240
 241         return $have_snapshot;
 242 }
 243
 244 sub feature_pickaxe {
 245         my ($val) = git_get_project_config('pickaxe', '--bool');
 246
 247         if ($val eq 'true') {
 248                 return (1);
 249         } elsif ($val eq 'false') {
 250                 return (0);
 251         }
 252
 253         return ($_[0]);
 254 }
 255
 256 # checking HEAD file with -e is fragile if the repository was
 257 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 258 # and then pruned.
 259 sub check_head_link {
 260         my ($dir) = @_;
 261         my $headfile = "$dir/HEAD";
 262         return ((-e $headfile) ||
 263                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 264 }
 265
 266 sub check_export_ok {
 267         my ($dir) = @_;
 268         return (check_head_link($dir) &&
 269                 (!$export_ok || -e "$dir/$export_ok"));
 270 }
 271
 272 # rename detection options for git-diff and git-diff-tree
 273 # - default is '-M', with the cost proportional to
 274 #   (number of removed files) * (number of new files).
 275 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 276 #   (number of changed files + number of removed files) * (number of new files)
 277 # - even more costly is '-C', '--find-copies-harder' with cost
 278 #   (number of files in the original tree) * (number of new files)
 279 # - one might want to include '-B' option, e.g. '-B', '-M'
 280 our @diff_opts = ('-M'); # taken from git_commit
 281
 282 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 283 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 284
 285 # version of the core git binary
 286 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 287
 288 $projects_list ||= $projectroot;
 289
 290 # ======================================================================
 291 # input validation and dispatch
 292 our $action = $cgi->param('a');
 293 if (defined $action) {
 294         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 295                 die_error(undef, "Invalid action parameter");
 296         }
 297 }
 298
 299 # parameters which are pathnames
 300 our $project = $cgi->param('p');
 301 if (defined $project) {
 302         if (!validate_pathname($project) ||
 303             !(-d "$projectroot/$project") ||
 304             !check_head_link("$projectroot/$project") ||
 305             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 306             ($strict_export && !project_in_list($project))) {
 307                 undef $project;
 308                 die_error(undef, "No such project");
 309         }
 310 }
 311
 312 our $file_name = $cgi->param('f');
 313 if (defined $file_name) {
 314         if (!validate_pathname($file_name)) {
 315                 die_error(undef, "Invalid file parameter");
 316         }
 317 }
 318
 319 our $file_parent = $cgi->param('fp');
 320 if (defined $file_parent) {
 321         if (!validate_pathname($file_parent)) {
 322                 die_error(undef, "Invalid file parent parameter");
 323         }
 324 }
 325
 326 # parameters which are refnames
 327 our $hash = $cgi->param('h');
 328 if (defined $hash) {
 329         if (!validate_refname($hash)) {
 330                 die_error(undef, "Invalid hash parameter");
 331         }
 332 }
 333
 334 our $hash_parent = $cgi->param('hp');
 335 if (defined $hash_parent) {
 336         if (!validate_refname($hash_parent)) {
 337                 die_error(undef, "Invalid hash parent parameter");
 338         }
 339 }
 340
 341 our $hash_base = $cgi->param('hb');
 342 if (defined $hash_base) {
 343         if (!validate_refname($hash_base)) {
 344                 die_error(undef, "Invalid hash base parameter");
 345         }
 346 }
 347
 348 our $hash_parent_base = $cgi->param('hpb');
 349 if (defined $hash_parent_base) {
 350         if (!validate_refname($hash_parent_base)) {
 351                 die_error(undef, "Invalid hash parent base parameter");
 352         }
 353 }
 354
 355 # other parameters
 356 our $page = $cgi->param('pg');
 357 if (defined $page) {
 358         if ($page =~ m/[^0-9]/) {
 359                 die_error(undef, "Invalid page parameter");
 360         }
 361 }
 362
 363 our $searchtext = $cgi->param('s');
 364 if (defined $searchtext) {
 365         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 366                 die_error(undef, "Invalid search parameter");
 367         }
 368         if (length($searchtext) < 2) {
 369                 die_error(undef, "At least two characters are required for search parameter");
 370         }
 371         $searchtext = quotemeta $searchtext;
 372 }
 373
 374 our $searchtype = $cgi->param('st');
 375 if (defined $searchtype) {
 376         if ($searchtype =~ m/[^a-z]/) {
 377                 die_error(undef, "Invalid searchtype parameter");
 378         }
 379 }
 380
 381 # now read PATH_INFO and use it as alternative to parameters
 382 sub evaluate_path_info {
 383         return if defined $project;
 384         my $path_info = $ENV{"PATH_INFO"};
 385         return if !$path_info;
 386         $path_info =~ s,^/+,,;
 387         return if !$path_info;
 388         # find which part of PATH_INFO is project
 389         $project = $path_info;
 390         $project =~ s,/+$,,;
 391         while ($project && !check_head_link("$projectroot/$project")) {
 392                 $project =~ s,/*[^/]*$,,;
 393         }
 394         # validate project
 395         $project = validate_pathname($project);
 396         if (!$project ||
 397             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 398             ($strict_export && !project_in_list($project))) {
 399                 undef $project;
 400                 return;
 401         }
 402         # do not change any parameters if an action is given using the query string
 403         return if $action;
 404         $path_info =~ s,^$project/*,,;
 405         my ($refname, $pathname) = split(/:/, $path_info, 2);
 406         if (defined $pathname) {
 407                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 408                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 409                 $pathname =~ s,^/+,,;
 410                 if (!$pathname || substr($pathname, -1) eq "/") {
 411                         $action  ||= "tree";
 412                         $pathname =~ s,/$,,;
 413                 } else {
 414                         $action  ||= "blob_plain";
 415                 }
 416                 $hash_base ||= validate_refname($refname);
 417                 $file_name ||= validate_pathname($pathname);
 418         } elsif (defined $refname) {
 419                 # we got "project.git/branch"
 420                 $action ||= "shortlog";
 421                 $hash   ||= validate_refname($refname);
 422         }
 423 }
 424 evaluate_path_info();
 425
 426 # path to the current git repository
 427 our $git_dir;
 428 $git_dir = "$projectroot/$project" if $project;
 429
 430 # dispatch
 431 my %actions = (
 432         "blame" => \&git_blame2,
 433         "blobdiff" => \&git_blobdiff,
 434         "blobdiff_plain" => \&git_blobdiff_plain,
 435         "blob" => \&git_blob,
 436         "blob_plain" => \&git_blob_plain,
 437         "commitdiff" => \&git_commitdiff,
 438         "commitdiff_plain" => \&git_commitdiff_plain,
 439         "commit" => \&git_commit,
 440         "forks" => \&git_forks,
 441         "heads" => \&git_heads,
 442         "history" => \&git_history,
 443         "log" => \&git_log,
 444         "rss" => \&git_rss,
 445         "atom" => \&git_atom,
 446         "search" => \&git_search,
 447         "search_help" => \&git_search_help,
 448         "shortlog" => \&git_shortlog,
 449         "summary" => \&git_summary,
 450         "tag" => \&git_tag,
 451         "tags" => \&git_tags,
 452         "tree" => \&git_tree,
 453         "snapshot" => \&git_snapshot,
 454         "object" => \&git_object,
 455         # those below don't need $project
 456         "opml" => \&git_opml,
 457         "project_list" => \&git_project_list,
 458         "project_index" => \&git_project_index,
 459 );
 460
 461 if (!defined $action) {
 462         if (defined $hash) {
 463                 $action = git_get_type($hash);
 464         } elsif (defined $hash_base && defined $file_name) {
 465                 $action = git_get_type("$hash_base:$file_name");
 466         } elsif (defined $project) {
 467                 $action = 'summary';
 468         } else {
 469                 $action = 'project_list';
 470         }
 471 }
 472 if (!defined($actions{$action})) {
 473         die_error(undef, "Unknown action");
 474 }
 475 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 476     !$project) {
 477         die_error(undef, "Project needed");
 478 }
 479 $actions{$action}->();
 480 exit;
 481
 482 ## ======================================================================
 483 ## action links
 484
 485 sub href(%) {
 486         my %params = @_;
 487         # default is to use -absolute url() i.e. $my_uri
 488         my $href = $params{-full} ? $my_url : $my_uri;
 489
 490         # XXX: Warning: If you touch this, check the search form for updating,
 491         # too.
 492
 493         my @mapping = (
 494                 project => "p",
 495                 action => "a",
 496                 file_name => "f",
 497                 file_parent => "fp",
 498                 hash => "h",
 499                 hash_parent => "hp",
 500                 hash_base => "hb",
 501                 hash_parent_base => "hpb",
 502                 page => "pg",
 503                 order => "o",
 504                 searchtext => "s",
 505                 searchtype => "st",
 506         );
 507         my %mapping = @mapping;
 508
 509         $params{'project'} = $project unless exists $params{'project'};
 510
 511         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 512         if ($use_pathinfo) {
 513                 # use PATH_INFO for project name
 514                 $href .= "/$params{'project'}" if defined $params{'project'};
 515                 delete $params{'project'};
 516
 517                 # Summary just uses the project path URL
 518                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 519                         delete $params{'action'};
 520                 }
 521         }
 522
 523         # now encode the parameters explicitly
 524         my @result = ();
 525         for (my $i = 0; $i < @mapping; $i += 2) {
 526                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 527                 if (defined $params{$name}) {
 528                         push @result, $symbol . "=" . esc_param($params{$name});
 529                 }
 530         }
 531         $href .= "?" . join(';', @result) if scalar @result;
 532
 533         return $href;
 534 }
 535
 536
 537 ## ======================================================================
 538 ## validation, quoting/unquoting and escaping
 539
 540 sub validate_pathname {
 541         my $input = shift || return undef;
 542
 543         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 544         # at the beginning, at the end, and between slashes.
 545         # also this catches doubled slashes
 546         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 547                 return undef;
 548         }
 549         # no null characters
 550         if ($input =~ m!\0!) {
 551                 return undef;
 552         }
 553         return $input;
 554 }
 555
 556 sub validate_refname {
 557         my $input = shift || return undef;
 558
 559         # textual hashes are O.K.
 560         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 561                 return $input;
 562         }
 563         # it must be correct pathname
 564         $input = validate_pathname($input)
 565                 or return undef;
 566         # restrictions on ref name according to git-check-ref-format
 567         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 568                 return undef;
 569         }
 570         return $input;
 571 }
 572
 573 # quote unsafe chars, but keep the slash, even when it's not
 574 # correct, but quoted slashes look too horrible in bookmarks
 575 sub esc_param {
 576         my $str = shift;
 577         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 578         $str =~ s/\+/%2B/g;
 579         $str =~ s/ /\+/g;
 580         return $str;
 581 }
 582
 583 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 584 sub esc_url {
 585         my $str = shift;
 586         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 587         $str =~ s/\+/%2B/g;
 588         $str =~ s/ /\+/g;
 589         return $str;
 590 }
 591
 592 # replace invalid utf8 character with SUBSTITUTION sequence
 593 sub esc_html ($;%) {
 594         my $str = shift;
 595         my %opts = @_;
 596
 597         $str = decode_utf8($str);
 598         $str = $cgi->escapeHTML($str);
 599         if ($opts{'-nbsp'}) {
 600                 $str =~ s/ /&nbsp;/g;
 601         }
 602         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 603         return $str;
 604 }
 605
 606 # quote control characters and escape filename to HTML
 607 sub esc_path {
 608         my $str = shift;
 609         my %opts = @_;
 610
 611         $str = decode_utf8($str);
 612         $str = $cgi->escapeHTML($str);
 613         if ($opts{'-nbsp'}) {
 614                 $str =~ s/ /&nbsp;/g;
 615         }
 616         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 617         return $str;
 618 }
 619
 620 # Make control characters "printable", using character escape codes (CEC)
 621 sub quot_cec {
 622         my $cntrl = shift;
 623         my %es = ( # character escape codes, aka escape sequences
 624                    "\t" => '\t',   # tab            (HT)
 625                    "\n" => '\n',   # line feed      (LF)
 626                    "\r" => '\r',   # carrige return (CR)
 627                    "\f" => '\f',   # form feed      (FF)
 628                    "\b" => '\b',   # backspace      (BS)
 629                    "\a" => '\a',   # alarm (bell)   (BEL)
 630                    "\e" => '\e',   # escape         (ESC)
 631                    "\013" => '\v', # vertical tab   (VT)
 632                    "\000" => '\0', # nul character  (NUL)
 633                    );
 634         my $chr = ( (exists $es{$cntrl})
 635                     ? $es{$cntrl}
 636                     : sprintf('\%03o', ord($cntrl)) );
 637         return "<span class=\"cntrl\">$chr</span>";
 638 }
 639
 640 # Alternatively use unicode control pictures codepoints,
 641 # Unicode "printable representation" (PR)
 642 sub quot_upr {
 643         my $cntrl = shift;
 644         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 645         return "<span class=\"cntrl\">$chr</span>";
 646 }
 647
 648 # git may return quoted and escaped filenames
 649 sub unquote {
 650         my $str = shift;
 651
 652         sub unq {
 653                 my $seq = shift;
 654                 my %es = ( # character escape codes, aka escape sequences
 655                         't' => "\t",   # tab            (HT, TAB)
 656                         'n' => "\n",   # newline        (NL)
 657                         'r' => "\r",   # return         (CR)
 658                         'f' => "\f",   # form feed      (FF)
 659                         'b' => "\b",   # backspace      (BS)
 660                         'a' => "\a",   # alarm (bell)   (BEL)
 661                         'e' => "\e",   # escape         (ESC)
 662                         'v' => "\013", # vertical tab   (VT)
 663                 );
 664
 665                 if ($seq =~ m/^[0-7]{1,3}$/) {
 666                         # octal char sequence
 667                         return chr(oct($seq));
 668                 } elsif (exists $es{$seq}) {
 669                         # C escape sequence, aka character escape code
 670                         return $es{$seq}
 671                 }
 672                 # quoted ordinary character
 673                 return $seq;
 674         }
 675
 676         if ($str =~ m/^"(.*)"$/) {
 677                 # needs unquoting
 678                 $str = $1;
 679                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 680         }
 681         return $str;
 682 }
 683
 684 # escape tabs (convert tabs to spaces)
 685 sub untabify {
 686         my $line = shift;
 687
 688         while ((my $pos = index($line, "\t")) != -1) {
 689                 if (my $count = (8 - ($pos % 8))) {
 690                         my $spaces = ' ' x $count;
 691                         $line =~ s/\t/$spaces/;
 692                 }
 693         }
 694
 695         return $line;
 696 }
 697
 698 sub project_in_list {
 699         my $project = shift;
 700         my @list = git_get_projects_list();
 701         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 702 }
 703
 704 ## ----------------------------------------------------------------------
 705 ## HTML aware string manipulation
 706
 707 sub chop_str {
 708         my $str = shift;
 709         my $len = shift;
 710         my $add_len = shift || 10;
 711
 712         # allow only $len chars, but don't cut a word if it would fit in $add_len
 713         # if it doesn't fit, cut it if it's still longer than the dots we would add
 714         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 715         my $body = $1;
 716         my $tail = $2;
 717         if (length($tail) > 4) {
 718                 $tail = " ...";
 719                 $body =~ s/&[^;]*$//; # remove chopped character entities
 720         }
 721         return "$body$tail";
 722 }
 723
 724 ## ----------------------------------------------------------------------
 725 ## functions returning short strings
 726
 727 # CSS class for given age value (in seconds)
 728 sub age_class {
 729         my $age = shift;
 730
 731         if ($age < 60*60*2) {
 732                 return "age0";
 733         } elsif ($age < 60*60*24*2) {
 734                 return "age1";
 735         } else {
 736                 return "age2";
 737         }
 738 }
 739
 740 # convert age in seconds to "nn units ago" string
 741 sub age_string {
 742         my $age = shift;
 743         my $age_str;
 744
 745         if ($age > 60*60*24*365*2) {
 746                 $age_str = (int $age/60/60/24/365);
 747                 $age_str .= " years ago";
 748         } elsif ($age > 60*60*24*(365/12)*2) {
 749                 $age_str = int $age/60/60/24/(365/12);
 750                 $age_str .= " months ago";
 751         } elsif ($age > 60*60*24*7*2) {
 752                 $age_str = int $age/60/60/24/7;
 753                 $age_str .= " weeks ago";
 754         } elsif ($age > 60*60*24*2) {
 755                 $age_str = int $age/60/60/24;
 756                 $age_str .= " days ago";
 757         } elsif ($age > 60*60*2) {
 758                 $age_str = int $age/60/60;
 759                 $age_str .= " hours ago";
 760         } elsif ($age > 60*2) {
 761                 $age_str = int $age/60;
 762                 $age_str .= " min ago";
 763         } elsif ($age > 2) {
 764                 $age_str = int $age;
 765                 $age_str .= " sec ago";
 766         } else {
 767                 $age_str .= " right now";
 768         }
 769         return $age_str;
 770 }
 771
 772 # convert file mode in octal to symbolic file mode string
 773 sub mode_str {
 774         my $mode = oct shift;
 775
 776         if (S_ISDIR($mode & S_IFMT)) {
 777                 return 'drwxr-xr-x';
 778         } elsif (S_ISLNK($mode)) {
 779                 return 'lrwxrwxrwx';
 780         } elsif (S_ISREG($mode)) {
 781                 # git cares only about the executable bit
 782                 if ($mode & S_IXUSR) {
 783                         return '-rwxr-xr-x';
 784                 } else {
 785                         return '-rw-r--r--';
 786                 };
 787         } else {
 788                 return '----------';
 789         }
 790 }
 791
 792 # convert file mode in octal to file type string
 793 sub file_type {
 794         my $mode = shift;
 795
 796         if ($mode !~ m/^[0-7]+$/) {
 797                 return $mode;
 798         } else {
 799                 $mode = oct $mode;
 800         }
 801
 802         if (S_ISDIR($mode & S_IFMT)) {
 803                 return "directory";
 804         } elsif (S_ISLNK($mode)) {
 805                 return "symlink";
 806         } elsif (S_ISREG($mode)) {
 807                 return "file";
 808         } else {
 809                 return "unknown";
 810         }
 811 }
 812
 813 # convert file mode in octal to file type description string
 814 sub file_type_long {
 815         my $mode = shift;
 816
 817         if ($mode !~ m/^[0-7]+$/) {
 818                 return $mode;
 819         } else {
 820                 $mode = oct $mode;
 821         }
 822
 823         if (S_ISDIR($mode & S_IFMT)) {
 824                 return "directory";
 825         } elsif (S_ISLNK($mode)) {
 826                 return "symlink";
 827         } elsif (S_ISREG($mode)) {
 828                 if ($mode & S_IXUSR) {
 829                         return "executable";
 830                 } else {
 831                         return "file";
 832                 };
 833         } else {
 834                 return "unknown";
 835         }
 836 }
 837
 838
 839 ## ----------------------------------------------------------------------
 840 ## functions returning short HTML fragments, or transforming HTML fragments
 841 ## which don't belong to other sections
 842
 843 # format line of commit message.
 844 sub format_log_line_html {
 845         my $line = shift;
 846
 847         $line = esc_html($line, -nbsp=>1);
 848         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 849                 my $hash_text = $1;
 850                 my $link =
 851                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 852                                 -class => "text"}, $hash_text);
 853                 $line =~ s/$hash_text/$link/;
 854         }
 855         return $line;
 856 }
 857
 858 # format marker of refs pointing to given object
 859 sub format_ref_marker {
 860         my ($refs, $id) = @_;
 861         my $markers = '';
 862
 863         if (defined $refs->{$id}) {
 864                 foreach my $ref (@{$refs->{$id}}) {
 865                         my ($type, $name) = qw();
 866                         # e.g. tags/v2.6.11 or heads/next
 867                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 868                                 $type = $1;
 869                                 $name = $2;
 870                         } else {
 871                                 $type = "ref";
 872                                 $name = $ref;
 873                         }
 874
 875                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 876                                     esc_html($name) . "</span>";
 877                 }
 878         }
 879
 880         if ($markers) {
 881                 return ' <span class="refs">'. $markers . '</span>';
 882         } else {
 883                 return "";
 884         }
 885 }
 886
 887 # format, perhaps shortened and with markers, title line
 888 sub format_subject_html {
 889         my ($long, $short, $href, $extra) = @_;
 890         $extra = '' unless defined($extra);
 891
 892         if (length($short) < length($long)) {
 893                 return $cgi->a({-href => $href, -class => "list subject",
 894                                 -title => decode_utf8($long)},
 895                        esc_html($short) . $extra);
 896         } else {
 897                 return $cgi->a({-href => $href, -class => "list subject"},
 898                        esc_html($long)  . $extra);
 899         }
 900 }
 901
 902 # format patch (diff) line (rather not to be used for diff headers)
 903 sub format_diff_line {
 904         my $line = shift;
 905         my ($from, $to) = @_;
 906         my $diff_class = "";
 907
 908         chomp $line;
 909
 910         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
 911                 # combined diff
 912                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
 913                 if ($line =~ m/^\@{3}/) {
 914                         $diff_class = " chunk_header";
 915                 } elsif ($line =~ m/^\\/) {
 916                         $diff_class = " incomplete";
 917                 } elsif ($prefix =~ tr/+/+/) {
 918                         $diff_class = " add";
 919                 } elsif ($prefix =~ tr/-/-/) {
 920                         $diff_class = " rem";
 921                 }
 922         } else {
 923                 # assume ordinary diff
 924                 my $char = substr($line, 0, 1);
 925                 if ($char eq '+') {
 926                         $diff_class = " add";
 927                 } elsif ($char eq '-') {
 928                         $diff_class = " rem";
 929                 } elsif ($char eq '@') {
 930                         $diff_class = " chunk_header";
 931                 } elsif ($char eq "\\") {
 932                         $diff_class = " incomplete";
 933                 }
 934         }
 935         $line = untabify($line);
 936         if ($from && $to && $line =~ m/^\@{2} /) {
 937                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 938                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 939
 940                 $from_lines = 0 unless defined $from_lines;
 941                 $to_lines   = 0 unless defined $to_lines;
 942
 943                 if ($from->{'href'}) {
 944                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 945                                              -class=>"list"}, $from_text);
 946                 }
 947                 if ($to->{'href'}) {
 948                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 949                                              -class=>"list"}, $to_text);
 950                 }
 951                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 952                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 953                 return "<div class=\"diff$diff_class\">$line</div>\n";
 954         } elsif ($from && $to && $line =~ m/^\@{3}/) {
 955                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
 956                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
 957
 958                 @from_text = split(' ', $ranges);
 959                 for (my $i = 0; $i < @from_text; ++$i) {
 960                         ($from_start[$i], $from_nlines[$i]) =
 961                                 (split(',', substr($from_text[$i], 1)), 0);
 962                 }
 963
 964                 $to_text   = pop @from_text;
 965                 $to_start  = pop @from_start;
 966                 $to_nlines = pop @from_nlines;
 967
 968                 $line = "<span class=\"chunk_info\">$prefix ";
 969                 for (my $i = 0; $i < @from_text; ++$i) {
 970                         if ($from->{'href'}[$i]) {
 971                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
 972                                                   -class=>"list"}, $from_text[$i]);
 973                         } else {
 974                                 $line .= $from_text[$i];
 975                         }
 976                         $line .= " ";
 977                 }
 978                 if ($to->{'href'}) {
 979                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
 980                                           -class=>"list"}, $to_text);
 981                 } else {
 982                         $line .= $to_text;
 983                 }
 984                 $line .= " $prefix</span>" .
 985                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 986                 return "<div class=\"diff$diff_class\">$line</div>\n";
 987         }
 988         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 989 }
 990
 991 ## ----------------------------------------------------------------------
 992 ## git utility subroutines, invoking git commands
 993
 994 # returns path to the core git executable and the --git-dir parameter as list
 995 sub git_cmd {
 996         return $GIT, '--git-dir='.$git_dir;
 997 }
 998
 999 # returns path to the core git executable and the --git-dir parameter as string
1000 sub git_cmd_str {
1001         return join(' ', git_cmd());
1002 }
1003
1004 # get HEAD ref of given project as hash
1005 sub git_get_head_hash {
1006         my $project = shift;
1007         my $o_git_dir = $git_dir;
1008         my $retval = undef;
1009         $git_dir = "$projectroot/$project";
1010         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1011                 my $head = <$fd>;
1012                 close $fd;
1013                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1014                         $retval = $1;
1015                 }
1016         }
1017         if (defined $o_git_dir) {
1018                 $git_dir = $o_git_dir;
1019         }
1020         return $retval;
1021 }
1022
1023 # get type of given object
1024 sub git_get_type {
1025         my $hash = shift;
1026
1027         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1028         my $type = <$fd>;
1029         close $fd or return;
1030         chomp $type;
1031         return $type;
1032 }
1033
1034 sub git_get_project_config {
1035         my ($key, $type) = @_;
1036
1037         return unless ($key);
1038         $key =~ s/^gitweb\.//;
1039         return if ($key =~ m/\W/);
1040
1041         my @x = (git_cmd(), 'config');
1042         if (defined $type) { push @x, $type; }
1043         push @x, "--get";
1044         push @x, "gitweb.$key";
1045         my $val = qx(@x);
1046         chomp $val;
1047         return ($val);
1048 }
1049
1050 # get hash of given path at given ref
1051 sub git_get_hash_by_path {
1052         my $base = shift;
1053         my $path = shift || return undef;
1054         my $type = shift;
1055
1056         $path =~ s,/+$,,;
1057
1058         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1059                 or die_error(undef, "Open git-ls-tree failed");
1060         my $line = <$fd>;
1061         close $fd or return undef;
1062
1063         if (!defined $line) {
1064                 # there is no tree or hash given by $path at $base
1065                 return undef;
1066         }
1067
1068         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1069         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1070         if (defined $type && $type ne $2) {
1071                 # type doesn't match
1072                 return undef;
1073         }
1074         return $3;
1075 }
1076
1077 # get path of entry with given hash at given tree-ish (ref)
1078 # used to get 'from' filename for combined diff (merge commit) for renames
1079 sub git_get_path_by_hash {
1080         my $base = shift || return;
1081         my $hash = shift || return;
1082
1083         local $/ = "\0";
1084
1085         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1086                 or return undef;
1087         while (my $line = <$fd>) {
1088                 chomp $line;
1089
1090                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1091                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1092                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1093                         close $fd;
1094                         return $1;
1095                 }
1096         }
1097         close $fd;
1098         return undef;
1099 }
1100
1101 ## ......................................................................
1102 ## git utility functions, directly accessing git repository
1103
1104 sub git_get_project_description {
1105         my $path = shift;
1106
1107         open my $fd, "$projectroot/$path/description" or return undef;
1108         my $descr = <$fd>;
1109         close $fd;
1110         chomp $descr;
1111         return $descr;
1112 }
1113
1114 sub git_get_project_url_list {
1115         my $path = shift;
1116
1117         open my $fd, "$projectroot/$path/cloneurl" or return;
1118         my @git_project_url_list = map { chomp; $_ } <$fd>;
1119         close $fd;
1120
1121         return wantarray ? @git_project_url_list : \@git_project_url_list;
1122 }
1123
1124 sub git_get_projects_list {
1125         my ($filter) = @_;
1126         my @list;
1127
1128         $filter ||= '';
1129         $filter =~ s/\.git$//;
1130
1131         my ($check_forks) = gitweb_check_feature('forks');
1132
1133         if (-d $projects_list) {
1134                 # search in directory
1135                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1136                 # remove the trailing "/"
1137                 $dir =~ s!/+$!!;
1138                 my $pfxlen = length("$dir");
1139
1140                 File::Find::find({
1141                         follow_fast => 1, # follow symbolic links
1142                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1143                         wanted => sub {
1144                                 # skip project-list toplevel, if we get it.
1145                                 return if (m!^[/.]$!);
1146                                 # only directories can be git repositories
1147                                 return unless (-d $_);
1148
1149                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1150                                 # we check related file in $projectroot
1151                                 if ($check_forks and $subdir =~ m#/.#) {
1152                                         $File::Find::prune = 1;
1153                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1154                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1155                                         $File::Find::prune = 1;
1156                                 }
1157                         },
1158                 }, "$dir");
1159
1160         } elsif (-f $projects_list) {
1161                 # read from file(url-encoded):
1162                 # 'git%2Fgit.git Linus+Torvalds'
1163                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1164                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1165                 my %paths;
1166                 open my ($fd), $projects_list or return;
1167         PROJECT:
1168                 while (my $line = <$fd>) {
1169                         chomp $line;
1170                         my ($path, $owner) = split ' ', $line;
1171                         $path = unescape($path);
1172                         $owner = unescape($owner);
1173                         if (!defined $path) {
1174                                 next;
1175                         }
1176                         if ($filter ne '') {
1177                                 # looking for forks;
1178                                 my $pfx = substr($path, 0, length($filter));
1179                                 if ($pfx ne $filter) {
1180                                         next PROJECT;
1181                                 }
1182                                 my $sfx = substr($path, length($filter));
1183                                 if ($sfx !~ /^\/.*\.git$/) {
1184                                         next PROJECT;
1185                                 }
1186                         } elsif ($check_forks) {
1187                         PATH:
1188                                 foreach my $filter (keys %paths) {
1189                                         # looking for forks;
1190                                         my $pfx = substr($path, 0, length($filter));
1191                                         if ($pfx ne $filter) {
1192                                                 next PATH;
1193                                         }
1194                                         my $sfx = substr($path, length($filter));
1195                                         if ($sfx !~ /^\/.*\.git$/) {
1196                                                 next PATH;
1197                                         }
1198                                         # is a fork, don't include it in
1199                                         # the list
1200                                         next PROJECT;
1201                                 }
1202                         }
1203                         if (check_export_ok("$projectroot/$path")) {
1204                                 my $pr = {
1205                                         path => $path,
1206                                         owner => decode_utf8($owner),
1207                                 };
1208                                 push @list, $pr;
1209                                 (my $forks_path = $path) =~ s/\.git$//;
1210                                 $paths{$forks_path}++;
1211                         }
1212                 }
1213                 close $fd;
1214         }
1215         return @list;
1216 }
1217
1218 sub git_get_project_owner {
1219         my $project = shift;
1220         my $owner;
1221
1222         return undef unless $project;
1223
1224         # read from file (url-encoded):
1225         # 'git%2Fgit.git Linus+Torvalds'
1226         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1227         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1228         if (-f $projects_list) {
1229                 open (my $fd , $projects_list);
1230                 while (my $line = <$fd>) {
1231                         chomp $line;
1232                         my ($pr, $ow) = split ' ', $line;
1233                         $pr = unescape($pr);
1234                         $ow = unescape($ow);
1235                         if ($pr eq $project) {
1236                                 $owner = decode_utf8($ow);
1237                                 last;
1238                         }
1239                 }
1240                 close $fd;
1241         }
1242         if (!defined $owner) {
1243                 $owner = get_file_owner("$projectroot/$project");
1244         }
1245
1246         return $owner;
1247 }
1248
1249 sub git_get_last_activity {
1250         my ($path) = @_;
1251         my $fd;
1252
1253         $git_dir = "$projectroot/$path";
1254         open($fd, "-|", git_cmd(), 'for-each-ref',
1255              '--format=%(committer)',
1256              '--sort=-committerdate',
1257              '--count=1',
1258              'refs/heads') or return;
1259         my $most_recent = <$fd>;
1260         close $fd or return;
1261         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1262                 my $timestamp = $1;
1263                 my $age = time - $timestamp;
1264                 return ($age, age_string($age));
1265         }
1266 }
1267
1268 sub git_get_references {
1269         my $type = shift || "";
1270         my %refs;
1271         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1272         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1273         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1274                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1275                 or return;
1276
1277         while (my $line = <$fd>) {
1278                 chomp $line;
1279                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1280                         if (defined $refs{$1}) {
1281                                 push @{$refs{$1}}, $2;
1282                         } else {
1283                                 $refs{$1} = [ $2 ];
1284                         }
1285                 }
1286         }
1287         close $fd or return;
1288         return \%refs;
1289 }
1290
1291 sub git_get_rev_name_tags {
1292         my $hash = shift || return undef;
1293
1294         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1295                 or return;
1296         my $name_rev = <$fd>;
1297         close $fd;
1298
1299         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1300                 return $1;
1301         } else {
1302                 # catches also '$hash undefined' output
1303                 return undef;
1304         }
1305 }
1306
1307 ## ----------------------------------------------------------------------
1308 ## parse to hash functions
1309
1310 sub parse_date {
1311         my $epoch = shift;
1312         my $tz = shift || "-0000";
1313
1314         my %date;
1315         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1316         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1317         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1318         $date{'hour'} = $hour;
1319         $date{'minute'} = $min;
1320         $date{'mday'} = $mday;
1321         $date{'day'} = $days[$wday];
1322         $date{'month'} = $months[$mon];
1323         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1324                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1325         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1326                              $mday, $months[$mon], $hour ,$min;
1327         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1328                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1329
1330         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1331         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1332         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1333         $date{'hour_local'} = $hour;
1334         $date{'minute_local'} = $min;
1335         $date{'tz_local'} = $tz;
1336         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1337                                   1900+$year, $mon+1, $mday,
1338                                   $hour, $min, $sec, $tz);
1339         return %date;
1340 }
1341
1342 sub parse_tag {
1343         my $tag_id = shift;
1344         my %tag;
1345         my @comment;
1346
1347         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1348         $tag{'id'} = $tag_id;
1349         while (my $line = <$fd>) {
1350                 chomp $line;
1351                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1352                         $tag{'object'} = $1;
1353                 } elsif ($line =~ m/^type (.+)$/) {
1354                         $tag{'type'} = $1;
1355                 } elsif ($line =~ m/^tag (.+)$/) {
1356                         $tag{'name'} = $1;
1357                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1358                         $tag{'author'} = $1;
1359                         $tag{'epoch'} = $2;
1360                         $tag{'tz'} = $3;
1361                 } elsif ($line =~ m/--BEGIN/) {
1362                         push @comment, $line;
1363                         last;
1364                 } elsif ($line eq "") {
1365                         last;
1366                 }
1367         }
1368         push @comment, <$fd>;
1369         $tag{'comment'} = \@comment;
1370         close $fd or return;
1371         if (!defined $tag{'name'}) {
1372                 return
1373         };
1374         return %tag
1375 }
1376
1377 sub parse_commit_text {
1378         my ($commit_text, $withparents) = @_;
1379         my @commit_lines = split '\n', $commit_text;
1380         my %co;
1381
1382         pop @commit_lines; # Remove '\0'
1383
1384         if (! @commit_lines) {
1385                 return;
1386         }
1387
1388         my $header = shift @commit_lines;
1389         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1390                 return;
1391         }
1392         ($co{'id'}, my @parents) = split ' ', $header;
1393         while (my $line = shift @commit_lines) {
1394                 last if $line eq "\n";
1395                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1396                         $co{'tree'} = $1;
1397                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1398                         push @parents, $1;
1399                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1400                         $co{'author'} = $1;
1401                         $co{'author_epoch'} = $2;
1402                         $co{'author_tz'} = $3;
1403                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1404                                 $co{'author_name'}  = $1;
1405                                 $co{'author_email'} = $2;
1406                         } else {
1407                                 $co{'author_name'} = $co{'author'};
1408                         }
1409                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1410                         $co{'committer'} = $1;
1411                         $co{'committer_epoch'} = $2;
1412                         $co{'committer_tz'} = $3;
1413                         $co{'committer_name'} = $co{'committer'};
1414                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1415                                 $co{'committer_name'}  = $1;
1416                                 $co{'committer_email'} = $2;
1417                         } else {
1418                                 $co{'committer_name'} = $co{'committer'};
1419                         }
1420                 }
1421         }
1422         if (!defined $co{'tree'}) {
1423                 return;
1424         };
1425         $co{'parents'} = \@parents;
1426         $co{'parent'} = $parents[0];
1427
1428         foreach my $title (@commit_lines) {
1429                 $title =~ s/^    //;
1430                 if ($title ne "") {
1431                         $co{'title'} = chop_str($title, 80, 5);
1432                         # remove leading stuff of merges to make the interesting part visible
1433                         if (length($title) > 50) {
1434                                 $title =~ s/^Automatic //;
1435                                 $title =~ s/^merge (of|with) /Merge ... /i;
1436                                 if (length($title) > 50) {
1437                                         $title =~ s/(http|rsync):\/\///;
1438                                 }
1439                                 if (length($title) > 50) {
1440                                         $title =~ s/(master|www|rsync)\.//;
1441                                 }
1442                                 if (length($title) > 50) {
1443                                         $title =~ s/kernel.org:?//;
1444                                 }
1445                                 if (length($title) > 50) {
1446                                         $title =~ s/\/pub\/scm//;
1447                                 }
1448                         }
1449                         $co{'title_short'} = chop_str($title, 50, 5);
1450                         last;
1451                 }
1452         }
1453         if ($co{'title'} eq "") {
1454                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1455         }
1456         # remove added spaces
1457         foreach my $line (@commit_lines) {
1458                 $line =~ s/^    //;
1459         }
1460         $co{'comment'} = \@commit_lines;
1461
1462         my $age = time - $co{'committer_epoch'};
1463         $co{'age'} = $age;
1464         $co{'age_string'} = age_string($age);
1465         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1466         if ($age > 60*60*24*7*2) {
1467                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1468                 $co{'age_string_age'} = $co{'age_string'};
1469         } else {
1470                 $co{'age_string_date'} = $co{'age_string'};
1471                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1472         }
1473         return %co;
1474 }
1475
1476 sub parse_commit {
1477         my ($commit_id) = @_;
1478         my %co;
1479
1480         local $/ = "\0";
1481
1482         open my $fd, "-|", git_cmd(), "rev-list",
1483                 "--parents",
1484                 "--header",
1485                 "--max-count=1",
1486                 $commit_id,
1487                 "--",
1488                 or die_error(undef, "Open git-rev-list failed");
1489         %co = parse_commit_text(<$fd>, 1);
1490         close $fd;
1491
1492         return %co;
1493 }
1494
1495 sub parse_commits {
1496         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1497         my @cos;
1498
1499         $maxcount ||= 1;
1500         $skip ||= 0;
1501
1502         local $/ = "\0";
1503
1504         open my $fd, "-|", git_cmd(), "rev-list",
1505                 "--header",
1506                 ($arg ? ($arg) : ()),
1507                 ("--max-count=" . $maxcount),
1508                 ("--skip=" . $skip),
1509                 $commit_id,
1510                 "--",
1511                 ($filename ? ($filename) : ())
1512                 or die_error(undef, "Open git-rev-list failed");
1513         while (my $line = <$fd>) {
1514                 my %co = parse_commit_text($line);
1515                 push @cos, \%co;
1516         }
1517         close $fd;
1518
1519         return wantarray ? @cos : \@cos;
1520 }
1521
1522 # parse ref from ref_file, given by ref_id, with given type
1523 sub parse_ref {
1524         my $ref_file = shift;
1525         my $ref_id = shift;
1526         my $type = shift || git_get_type($ref_id);
1527         my %ref_item;
1528
1529         $ref_item{'type'} = $type;
1530         $ref_item{'id'} = $ref_id;
1531         $ref_item{'epoch'} = 0;
1532         $ref_item{'age'} = "unknown";
1533         if ($type eq "tag") {
1534                 my %tag = parse_tag($ref_id);
1535                 $ref_item{'comment'} = $tag{'comment'};
1536                 if ($tag{'type'} eq "commit") {
1537                         my %co = parse_commit($tag{'object'});
1538                         $ref_item{'epoch'} = $co{'committer_epoch'};
1539                         $ref_item{'age'} = $co{'age_string'};
1540                 } elsif (defined($tag{'epoch'})) {
1541                         my $age = time - $tag{'epoch'};
1542                         $ref_item{'epoch'} = $tag{'epoch'};
1543                         $ref_item{'age'} = age_string($age);
1544                 }
1545                 $ref_item{'reftype'} = $tag{'type'};
1546                 $ref_item{'name'} = $tag{'name'};
1547                 $ref_item{'refid'} = $tag{'object'};
1548         } elsif ($type eq "commit"){
1549                 my %co = parse_commit($ref_id);
1550                 $ref_item{'reftype'} = "commit";
1551                 $ref_item{'name'} = $ref_file;
1552                 $ref_item{'title'} = $co{'title'};
1553                 $ref_item{'refid'} = $ref_id;
1554                 $ref_item{'epoch'} = $co{'committer_epoch'};
1555                 $ref_item{'age'} = $co{'age_string'};
1556         } else {
1557                 $ref_item{'reftype'} = $type;
1558                 $ref_item{'name'} = $ref_file;
1559                 $ref_item{'refid'} = $ref_id;
1560         }
1561
1562         return %ref_item;
1563 }
1564
1565 # parse line of git-diff-tree "raw" output
1566 sub parse_difftree_raw_line {
1567         my $line = shift;
1568         my %res;
1569
1570         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1571         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1572         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1573                 $res{'from_mode'} = $1;
1574                 $res{'to_mode'} = $2;
1575                 $res{'from_id'} = $3;
1576                 $res{'to_id'} = $4;
1577                 $res{'status'} = $5;
1578                 $res{'similarity'} = $6;
1579                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1580                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1581                 } else {
1582                         $res{'file'} = unquote($7);
1583                 }
1584         }
1585         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1586         # combined diff (for merge commit)
1587         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1588                 $res{'nparents'}  = length($1);
1589                 $res{'from_mode'} = [ split(' ', $2) ];
1590                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1591                 $res{'from_id'} = [ split(' ', $3) ];
1592                 $res{'to_id'} = pop @{$res{'from_id'}};
1593                 $res{'status'} = [ split('', $4) ];
1594                 $res{'to_file'} = unquote($5);
1595         }
1596         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1597         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1598                 $res{'commit'} = $1;
1599         }
1600
1601         return wantarray ? %res : \%res;
1602 }
1603
1604 # parse line of git-ls-tree output
1605 sub parse_ls_tree_line ($;%) {
1606         my $line = shift;
1607         my %opts = @_;
1608         my %res;
1609
1610         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1611         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1612
1613         $res{'mode'} = $1;
1614         $res{'type'} = $2;
1615         $res{'hash'} = $3;
1616         if ($opts{'-z'}) {
1617                 $res{'name'} = $4;
1618         } else {
1619                 $res{'name'} = unquote($4);
1620         }
1621
1622         return wantarray ? %res : \%res;
1623 }
1624
1625 ## ......................................................................
1626 ## parse to array of hashes functions
1627
1628 sub git_get_heads_list {
1629         my $limit = shift;
1630         my @headslist;
1631
1632         open my $fd, '-|', git_cmd(), 'for-each-ref',
1633                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1634                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1635                 'refs/heads'
1636                 or return;
1637         while (my $line = <$fd>) {
1638                 my %ref_item;
1639
1640                 chomp $line;
1641                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1642                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1643                 my ($committer, $epoch, $tz) =
1644                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1645                 $name =~ s!^refs/heads/!!;
1646
1647                 $ref_item{'name'}  = $name;
1648                 $ref_item{'id'}    = $hash;
1649                 $ref_item{'title'} = $title || '(no commit message)';
1650                 $ref_item{'epoch'} = $epoch;
1651                 if ($epoch) {
1652                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1653                 } else {
1654                         $ref_item{'age'} = "unknown";
1655                 }
1656
1657                 push @headslist, \%ref_item;
1658         }
1659         close $fd;
1660
1661         return wantarray ? @headslist : \@headslist;
1662 }
1663
1664 sub git_get_tags_list {
1665         my $limit = shift;
1666         my @tagslist;
1667
1668         open my $fd, '-|', git_cmd(), 'for-each-ref',
1669                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1670                 '--format=%(objectname) %(objecttype) %(refname) '.
1671                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1672                 'refs/tags'
1673                 or return;
1674         while (my $line = <$fd>) {
1675                 my %ref_item;
1676
1677                 chomp $line;
1678                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1679                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1680                 my ($creator, $epoch, $tz) =
1681                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1682                 $name =~ s!^refs/tags/!!;
1683
1684                 $ref_item{'type'} = $type;
1685                 $ref_item{'id'} = $id;
1686                 $ref_item{'name'} = $name;
1687                 if ($type eq "tag") {
1688                         $ref_item{'subject'} = $title;
1689                         $ref_item{'reftype'} = $reftype;
1690                         $ref_item{'refid'}   = $refid;
1691                 } else {
1692                         $ref_item{'reftype'} = $type;
1693                         $ref_item{'refid'}   = $id;
1694                 }
1695
1696                 if ($type eq "tag" || $type eq "commit") {
1697                         $ref_item{'epoch'} = $epoch;
1698                         if ($epoch) {
1699                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1700                         } else {
1701                                 $ref_item{'age'} = "unknown";
1702                         }
1703                 }
1704
1705                 push @tagslist, \%ref_item;
1706         }
1707         close $fd;
1708
1709         return wantarray ? @tagslist : \@tagslist;
1710 }
1711
1712 ## ----------------------------------------------------------------------
1713 ## filesystem-related functions
1714
1715 sub get_file_owner {
1716         my $path = shift;
1717
1718         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1719         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1720         if (!defined $gcos) {
1721                 return undef;
1722         }
1723         my $owner = $gcos;
1724         $owner =~ s/[,;].*$//;
1725         return decode_utf8($owner);
1726 }
1727
1728 ## ......................................................................
1729 ## mimetype related functions
1730
1731 sub mimetype_guess_file {
1732         my $filename = shift;
1733         my $mimemap = shift;
1734         -r $mimemap or return undef;
1735
1736         my %mimemap;
1737         open(MIME, $mimemap) or return undef;
1738         while (<MIME>) {
1739                 next if m/^#/; # skip comments
1740                 my ($mime, $exts) = split(/\t+/);
1741                 if (defined $exts) {
1742                         my @exts = split(/\s+/, $exts);
1743                         foreach my $ext (@exts) {
1744                                 $mimemap{$ext} = $mime;
1745                         }
1746                 }
1747         }
1748         close(MIME);
1749
1750         $filename =~ /\.([^.]*)$/;
1751         return $mimemap{$1};
1752 }
1753
1754 sub mimetype_guess {
1755         my $filename = shift;
1756         my $mime;
1757         $filename =~ /\./ or return undef;
1758
1759         if ($mimetypes_file) {
1760                 my $file = $mimetypes_file;
1761                 if ($file !~ m!^/!) { # if it is relative path
1762                         # it is relative to project
1763                         $file = "$projectroot/$project/$file";
1764                 }
1765                 $mime = mimetype_guess_file($filename, $file);
1766         }
1767         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1768         return $mime;
1769 }
1770
1771 sub blob_mimetype {
1772         my $fd = shift;
1773         my $filename = shift;
1774
1775         if ($filename) {
1776                 my $mime = mimetype_guess($filename);
1777                 $mime and return $mime;
1778         }
1779
1780         # just in case
1781         return $default_blob_plain_mimetype unless $fd;
1782
1783         if (-T $fd) {
1784                 return 'text/plain' .
1785                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1786         } elsif (! $filename) {
1787                 return 'application/octet-stream';
1788         } elsif ($filename =~ m/\.png$/i) {
1789                 return 'image/png';
1790         } elsif ($filename =~ m/\.gif$/i) {
1791                 return 'image/gif';
1792         } elsif ($filename =~ m/\.jpe?g$/i) {
1793                 return 'image/jpeg';
1794         } else {
1795                 return 'application/octet-stream';
1796         }
1797 }
1798
1799 ## ======================================================================
1800 ## functions printing HTML: header, footer, error page
1801
1802 sub git_header_html {
1803         my $status = shift || "200 OK";
1804         my $expires = shift;
1805
1806         my $title = "$site_name";
1807         if (defined $project) {
1808                 $title .= " - " . decode_utf8($project);
1809                 if (defined $action) {
1810                         $title .= "/$action";
1811                         if (defined $file_name) {
1812                                 $title .= " - " . esc_path($file_name);
1813                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1814                                         $title .= "/";
1815                                 }
1816                         }
1817                 }
1818         }
1819         my $content_type;
1820         # require explicit support from the UA if we are to send the page as
1821         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1822         # we have to do this because MSIE sometimes globs '*/*', pretending to
1823         # support xhtml+xml but choking when it gets what it asked for.
1824         if (defined $cgi->http('HTTP_ACCEPT') &&
1825             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1826             $cgi->Accept('application/xhtml+xml') != 0) {
1827                 $content_type = 'application/xhtml+xml';
1828         } else {
1829                 $content_type = 'text/html';
1830         }
1831         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1832                            -status=> $status, -expires => $expires);
1833         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1834         print <<EOF;
1835 <?xml version="1.0" encoding="utf-8"?>
1836 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1837 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1838 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1839 <!-- git core binaries version $git_version -->
1840 <head>
1841 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1842 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1843 <meta name="robots" content="index, nofollow"/>
1844 <title>$title</title>
1845 EOF
1846 # print out each stylesheet that exist
1847         if (defined $stylesheet) {
1848 #provides backwards capability for those people who define style sheet in a config file
1849                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1850         } else {
1851                 foreach my $stylesheet (@stylesheets) {
1852                         next unless $stylesheet;
1853                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1854                 }
1855         }
1856         if (defined $project) {
1857                 printf('<link rel="alternate" title="%s log RSS feed" '.
1858                        'href="%s" type="application/rss+xml" />'."\n",
1859                        esc_param($project), href(action=>"rss"));
1860                 printf('<link rel="alternate" title="%s log Atom feed" '.
1861                        'href="%s" type="application/atom+xml" />'."\n",
1862                        esc_param($project), href(action=>"atom"));
1863         } else {
1864                 printf('<link rel="alternate" title="%s projects list" '.
1865                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1866                        $site_name, href(project=>undef, action=>"project_index"));
1867                 printf('<link rel="alternate" title="%s projects feeds" '.
1868                        'href="%s" type="text/x-opml"/>'."\n",
1869                        $site_name, href(project=>undef, action=>"opml"));
1870         }
1871         if (defined $favicon) {
1872                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1873         }
1874
1875         print "</head>\n" .
1876               "<body>\n";
1877
1878         if (-f $site_header) {
1879                 open (my $fd, $site_header);
1880                 print <$fd>;
1881                 close $fd;
1882         }
1883
1884         print "<div class=\"page_header\">\n" .
1885               $cgi->a({-href => esc_url($logo_url),
1886                        -title => $logo_label},
1887                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1888         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1889         if (defined $project) {
1890                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1891                 if (defined $action) {
1892                         print " / $action";
1893                 }
1894                 print "\n";
1895         }
1896         my ($have_search) = gitweb_check_feature('search');
1897         if ((defined $project) && ($have_search)) {
1898                 if (!defined $searchtext) {
1899                         $searchtext = "";
1900                 }
1901                 my $search_hash;
1902                 if (defined $hash_base) {
1903                         $search_hash = $hash_base;
1904                 } elsif (defined $hash) {
1905                         $search_hash = $hash;
1906                 } else {
1907                         $search_hash = "HEAD";
1908                 }
1909                 $cgi->param("a", "search");
1910                 $cgi->param("h", $search_hash);
1911                 $cgi->param("p", $project);
1912                 print $cgi->startform(-method => "get", -action => $my_uri) .
1913                       "<div class=\"search\">\n" .
1914                       $cgi->hidden(-name => "p") . "\n" .
1915                       $cgi->hidden(-name => "a") . "\n" .
1916                       $cgi->hidden(-name => "h") . "\n" .
1917                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1918                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1919                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1920                       " search:\n",
1921                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1922                       "</div>" .
1923                       $cgi->end_form() . "\n";
1924         }
1925         print "</div>\n";
1926 }
1927
1928 sub git_footer_html {
1929         print "<div class=\"page_footer\">\n";
1930         if (defined $project) {
1931                 my $descr = git_get_project_description($project);
1932                 if (defined $descr) {
1933                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1934                 }
1935                 print $cgi->a({-href => href(action=>"rss"),
1936                               -class => "rss_logo"}, "RSS") . " ";
1937                 print $cgi->a({-href => href(action=>"atom"),
1938                               -class => "rss_logo"}, "Atom") . "\n";
1939         } else {
1940                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1941                               -class => "rss_logo"}, "OPML") . " ";
1942                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1943                               -class => "rss_logo"}, "TXT") . "\n";
1944         }
1945         print "</div>\n" ;
1946
1947         if (-f $site_footer) {
1948                 open (my $fd, $site_footer);
1949                 print <$fd>;
1950                 close $fd;
1951         }
1952
1953         print "</body>\n" .
1954               "</html>";
1955 }
1956
1957 sub die_error {
1958         my $status = shift || "403 Forbidden";
1959         my $error = shift || "Malformed query, file missing or permission denied";
1960
1961         git_header_html($status);
1962         print <<EOF;
1963 <div class="page_body">
1964 <br /><br />
1965 $status - $error
1966 <br />
1967 </div>
1968 EOF
1969         git_footer_html();
1970         exit;
1971 }
1972
1973 ## ----------------------------------------------------------------------
1974 ## functions printing or outputting HTML: navigation
1975
1976 sub git_print_page_nav {
1977         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1978         $extra = '' if !defined $extra; # pager or formats
1979
1980         my @navs = qw(summary shortlog log commit commitdiff tree);
1981         if ($suppress) {
1982                 @navs = grep { $_ ne $suppress } @navs;
1983         }
1984
1985         my %arg = map { $_ => {action=>$_} } @navs;
1986         if (defined $head) {
1987                 for (qw(commit commitdiff)) {
1988                         $arg{$_}{'hash'} = $head;
1989                 }
1990                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1991                         for (qw(shortlog log)) {
1992                                 $arg{$_}{'hash'} = $head;
1993                         }
1994                 }
1995         }
1996         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1997         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1998
1999         print "<div class=\"page_nav\">\n" .
2000                 (join " | ",
2001                  map { $_ eq $current ?
2002                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2003                  } @navs);
2004         print "<br/>\n$extra<br/>\n" .
2005               "</div>\n";
2006 }
2007
2008 sub format_paging_nav {
2009         my ($action, $hash, $head, $page, $nrevs) = @_;
2010         my $paging_nav;
2011
2012
2013         if ($hash ne $head || $page) {
2014                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2015         } else {
2016                 $paging_nav .= "HEAD";
2017         }
2018
2019         if ($page > 0) {
2020                 $paging_nav .= " &sdot; " .
2021                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2022                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2023         } else {
2024                 $paging_nav .= " &sdot; prev";
2025         }
2026
2027         if ($nrevs >= (100 * ($page+1)-1)) {
2028                 $paging_nav .= " &sdot; " .
2029                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2030                                  -accesskey => "n", -title => "Alt-n"}, "next");
2031         } else {
2032                 $paging_nav .= " &sdot; next";
2033         }
2034
2035         return $paging_nav;
2036 }
2037
2038 ## ......................................................................
2039 ## functions printing or outputting HTML: div
2040
2041 sub git_print_header_div {
2042         my ($action, $title, $hash, $hash_base) = @_;
2043         my %args = ();
2044
2045         $args{'action'} = $action;
2046         $args{'hash'} = $hash if $hash;
2047         $args{'hash_base'} = $hash_base if $hash_base;
2048
2049         print "<div class=\"header\">\n" .
2050               $cgi->a({-href => href(%args), -class => "title"},
2051               $title ? $title : $action) .
2052               "\n</div>\n";
2053 }
2054
2055 #sub git_print_authorship (\%) {
2056 sub git_print_authorship {
2057         my $co = shift;
2058
2059         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2060         print "<div class=\"author_date\">" .
2061               esc_html($co->{'author_name'}) .
2062               " [$ad{'rfc2822'}";
2063         if ($ad{'hour_local'} < 6) {
2064                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2065                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2066         } else {
2067                 printf(" (%02d:%02d %s)",
2068                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2069         }
2070         print "]</div>\n";
2071 }
2072
2073 sub git_print_page_path {
2074         my $name = shift;
2075         my $type = shift;
2076         my $hb = shift;
2077
2078
2079         print "<div class=\"page_path\">";
2080         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2081                       -title => 'tree root'}, decode_utf8("[$project]"));
2082         print " / ";
2083         if (defined $name) {
2084                 my @dirname = split '/', $name;
2085                 my $basename = pop @dirname;
2086                 my $fullname = '';
2087
2088                 foreach my $dir (@dirname) {
2089                         $fullname .= ($fullname ? '/' : '') . $dir;
2090                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2091                                                      hash_base=>$hb),
2092                                       -title => $fullname}, esc_path($dir));
2093                         print " / ";
2094                 }
2095                 if (defined $type && $type eq 'blob') {
2096                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2097                                                      hash_base=>$hb),
2098                                       -title => $name}, esc_path($basename));
2099                 } elsif (defined $type && $type eq 'tree') {
2100                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2101                                                      hash_base=>$hb),
2102                                       -title => $name}, esc_path($basename));
2103                         print " / ";
2104                 } else {
2105                         print esc_path($basename);
2106                 }
2107         }
2108         print "<br/></div>\n";
2109 }
2110
2111 # sub git_print_log (\@;%) {
2112 sub git_print_log ($;%) {
2113         my $log = shift;
2114         my %opts = @_;
2115
2116         if ($opts{'-remove_title'}) {
2117                 # remove title, i.e. first line of log
2118                 shift @$log;
2119         }
2120         # remove leading empty lines
2121         while (defined $log->[0] && $log->[0] eq "") {
2122                 shift @$log;
2123         }
2124
2125         # print log
2126         my $signoff = 0;
2127         my $empty = 0;
2128         foreach my $line (@$log) {
2129                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2130                         $signoff = 1;
2131                         $empty = 0;
2132                         if (! $opts{'-remove_signoff'}) {
2133                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2134                                 next;
2135                         } else {
2136                                 # remove signoff lines
2137                                 next;
2138                         }
2139                 } else {
2140                         $signoff = 0;
2141                 }
2142
2143                 # print only one empty line
2144                 # do not print empty line after signoff
2145                 if ($line eq "") {
2146                         next if ($empty || $signoff);
2147                         $empty = 1;
2148                 } else {
2149                         $empty = 0;
2150                 }
2151
2152                 print format_log_line_html($line) . "<br/>\n";
2153         }
2154
2155         if ($opts{'-final_empty_line'}) {
2156                 # end with single empty line
2157                 print "<br/>\n" unless $empty;
2158         }
2159 }
2160
2161 # return link target (what link points to)
2162 sub git_get_link_target {
2163         my $hash = shift;
2164         my $link_target;
2165
2166         # read link
2167         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2168                 or return;
2169         {
2170                 local $/;
2171                 $link_target = <$fd>;
2172         }
2173         close $fd
2174                 or return;
2175
2176         return $link_target;
2177 }
2178
2179 # given link target, and the directory (basedir) the link is in,
2180 # return target of link relative to top directory (top tree);
2181 # return undef if it is not possible (including absolute links).
2182 sub normalize_link_target {
2183         my ($link_target, $basedir, $hash_base) = @_;
2184
2185         # we can normalize symlink target only if $hash_base is provided
2186         return unless $hash_base;
2187
2188         # absolute symlinks (beginning with '/') cannot be normalized
2189         return if (substr($link_target, 0, 1) eq '/');
2190
2191         # normalize link target to path from top (root) tree (dir)
2192         my $path;
2193         if ($basedir) {
2194                 $path = $basedir . '/' . $link_target;
2195         } else {
2196                 # we are in top (root) tree (dir)
2197                 $path = $link_target;
2198         }
2199
2200         # remove //, /./, and /../
2201         my @path_parts;
2202         foreach my $part (split('/', $path)) {
2203                 # discard '.' and ''
2204                 next if (!$part || $part eq '.');
2205                 # handle '..'
2206                 if ($part eq '..') {
2207                         if (@path_parts) {
2208                                 pop @path_parts;
2209                         } else {
2210                                 # link leads outside repository (outside top dir)
2211                                 return;
2212                         }
2213                 } else {
2214                         push @path_parts, $part;
2215                 }
2216         }
2217         $path = join('/', @path_parts);
2218
2219         return $path;
2220 }
2221
2222 # print tree entry (row of git_tree), but without encompassing <tr> element
2223 sub git_print_tree_entry {
2224         my ($t, $basedir, $hash_base, $have_blame) = @_;
2225
2226         my %base_key = ();
2227         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2228
2229         # The format of a table row is: mode list link.  Where mode is
2230         # the mode of the entry, list is the name of the entry, an href,
2231         # and link is the action links of the entry.
2232
2233         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2234         if ($t->{'type'} eq "blob") {
2235                 print "<td class=\"list\">" .
2236                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2237                                                file_name=>"$basedir$t->{'name'}", %base_key),
2238                                 -class => "list"}, esc_path($t->{'name'}));
2239                 if (S_ISLNK(oct $t->{'mode'})) {
2240                         my $link_target = git_get_link_target($t->{'hash'});
2241                         if ($link_target) {
2242                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2243                                 if (defined $norm_target) {
2244                                         print " -> " .
2245                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2246                                                                      file_name=>$norm_target),
2247                                                        -title => $norm_target}, esc_path($link_target));
2248                                 } else {
2249                                         print " -> " . esc_path($link_target);
2250                                 }
2251                         }
2252                 }
2253                 print "</td>\n";
2254                 print "<td class=\"link\">";
2255                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2256                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2257                               "blob");
2258                 if ($have_blame) {
2259                         print " | " .
2260                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2261                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2262                                       "blame");
2263                 }
2264                 if (defined $hash_base) {
2265                         print " | " .
2266                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2267                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2268                                       "history");
2269                 }
2270                 print " | " .
2271                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2272                                                file_name=>"$basedir$t->{'name'}")},
2273                                 "raw");
2274                 print "</td>\n";
2275
2276         } elsif ($t->{'type'} eq "tree") {
2277                 print "<td class=\"list\">";
2278                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2279                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2280                               esc_path($t->{'name'}));
2281                 print "</td>\n";
2282                 print "<td class=\"link\">";
2283                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2284                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2285                               "tree");
2286                 if (defined $hash_base) {
2287                         print " | " .
2288                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2289                                                      file_name=>"$basedir$t->{'name'}")},
2290                                       "history");
2291                 }
2292                 print "</td>\n";
2293         }
2294 }
2295
2296 ## ......................................................................
2297 ## functions printing large fragments of HTML
2298
2299 sub fill_from_file_info {
2300         my ($diff, @parents) = @_;
2301
2302         $diff->{'from_file'} = [ ];
2303         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2304         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2305                 if ($diff->{'status'}[$i] eq 'R' ||
2306                     $diff->{'status'}[$i] eq 'C') {
2307                         $diff->{'from_file'}[$i] =
2308                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2309                 }
2310         }
2311
2312         return $diff;
2313 }
2314
2315 # parameters can be strings, or references to arrays of strings
2316 sub from_ids_eq {
2317         my ($a, $b) = @_;
2318
2319         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2320                 for (my $i = 0; $i < @$a; ++$i) {
2321                         return 0 unless ($a->[$i] eq $b->[$i]);
2322                 }
2323                 return 1;
2324         } elsif (!ref($a) && !ref($b)) {
2325                 return $a eq $b;
2326         } else {
2327                 return 0;
2328         }
2329 }
2330
2331
2332 sub git_difftree_body {
2333         my ($difftree, $hash, @parents) = @_;
2334         my ($parent) = $parents[0];
2335         my ($have_blame) = gitweb_check_feature('blame');
2336         print "<div class=\"list_head\">\n";
2337         if ($#{$difftree} > 10) {
2338                 print(($#{$difftree} + 1) . " files changed:\n");
2339         }
2340         print "</div>\n";
2341
2342         print "<table class=\"" .
2343               (@parents > 1 ? "combined " : "") .
2344               "diff_tree\">\n";
2345         my $alternate = 1;
2346         my $patchno = 0;
2347         foreach my $line (@{$difftree}) {
2348                 my $diff;
2349                 if (ref($line) eq "HASH") {
2350                         # pre-parsed (or generated by hand)
2351                         $diff = $line;
2352                 } else {
2353                         $diff = parse_difftree_raw_line($line);
2354                 }
2355
2356                 if ($alternate) {
2357                         print "<tr class=\"dark\">\n";
2358                 } else {
2359                         print "<tr class=\"light\">\n";
2360                 }
2361                 $alternate ^= 1;
2362
2363                 if (exists $diff->{'nparents'}) { # combined diff
2364
2365                         fill_from_file_info($diff, @parents)
2366                                 unless exists $diff->{'from_file'};
2367
2368                         if ($diff->{'to_id'} ne ('0' x 40)) {
2369                                 # file exists in the result (child) commit
2370                                 print "<td>" .
2371                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2372                                                              file_name=>$diff->{'to_file'},
2373                                                              hash_base=>$hash),
2374                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2375                                       "</td>\n";
2376                         } else {
2377                                 print "<td>" .
2378                                       esc_path($diff->{'to_file'}) .
2379                                       "</td>\n";
2380                         }
2381
2382                         if ($action eq 'commitdiff') {
2383                                 # link to patch
2384                                 $patchno++;
2385                                 print "<td class=\"link\">" .
2386                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2387                                       " | " .
2388                                       "</td>\n";
2389                         }
2390
2391                         my $has_history = 0;
2392                         my $not_deleted = 0;
2393                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2394                                 my $hash_parent = $parents[$i];
2395                                 my $from_hash = $diff->{'from_id'}[$i];
2396                                 my $from_path = $diff->{'from_file'}[$i];
2397                                 my $status = $diff->{'status'}[$i];
2398
2399                                 $has_history ||= ($status ne 'A');
2400                                 $not_deleted ||= ($status ne 'D');
2401
2402                                 if ($status eq 'A') {
2403                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2404                                 } elsif ($status eq 'D') {
2405                                         print "<td class=\"link\">" .
2406                                               $cgi->a({-href => href(action=>"blob",
2407                                                                      hash_base=>$hash,
2408                                                                      hash=>$from_hash,
2409                                                                      file_name=>$from_path)},
2410                                                       "blob" . ($i+1)) .
2411                                               " | </td>\n";
2412                                 } else {
2413                                         if ($diff->{'to_id'} eq $from_hash) {
2414                                                 print "<td class=\"link nochange\">";
2415                                         } else {
2416                                                 print "<td class=\"link\">";
2417                                         }
2418                                         print $cgi->a({-href => href(action=>"blobdiff",
2419                                                                      hash=>$diff->{'to_id'},
2420                                                                      hash_parent=>$from_hash,
2421                                                                      hash_base=>$hash,
2422                                                                      hash_parent_base=>$hash_parent,
2423                                                                      file_name=>$diff->{'to_file'},
2424                                                                      file_parent=>$from_path)},
2425                                                       "diff" . ($i+1)) .
2426                                               " | </td>\n";
2427                                 }
2428                         }
2429
2430                         print "<td class=\"link\">";
2431                         if ($not_deleted) {
2432                                 print $cgi->a({-href => href(action=>"blob",
2433                                                              hash=>$diff->{'to_id'},
2434                                                              file_name=>$diff->{'to_file'},
2435                                                              hash_base=>$hash)},
2436                                               "blob");
2437                                 print " | " if ($has_history);
2438                         }
2439                         if ($has_history) {
2440                                 print $cgi->a({-href => href(action=>"history",
2441                                                              file_name=>$diff->{'to_file'},
2442                                                              hash_base=>$hash)},
2443                                               "history");
2444                         }
2445                         print "</td>\n";
2446
2447                         print "</tr>\n";
2448                         next; # instead of 'else' clause, to avoid extra indent
2449                 }
2450                 # else ordinary diff
2451
2452                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2453                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2454                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2455                         $to_mode_oct = oct $diff->{'to_mode'};
2456                         if (S_ISREG($to_mode_oct)) { # only for regular file
2457                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2458                         }
2459                         $to_file_type = file_type($diff->{'to_mode'});
2460                 }
2461                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2462                         $from_mode_oct = oct $diff->{'from_mode'};
2463                         if (S_ISREG($to_mode_oct)) { # only for regular file
2464                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2465                         }
2466                         $from_file_type = file_type($diff->{'from_mode'});
2467                 }
2468
2469                 if ($diff->{'status'} eq "A") { # created
2470                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2471                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2472                         $mode_chng   .= "]</span>";
2473                         print "<td>";
2474                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2475                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2476                                       -class => "list"}, esc_path($diff->{'file'}));
2477                         print "</td>\n";
2478                         print "<td>$mode_chng</td>\n";
2479                         print "<td class=\"link\">";
2480                         if ($action eq 'commitdiff') {
2481                                 # link to patch
2482                                 $patchno++;
2483                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2484                                 print " | ";
2485                         }
2486                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2487                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2488                                       "blob");
2489                         print "</td>\n";
2490
2491                 } elsif ($diff->{'status'} eq "D") { # deleted
2492                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2493                         print "<td>";
2494                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2495                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2496                                        -class => "list"}, esc_path($diff->{'file'}));
2497                         print "</td>\n";
2498                         print "<td>$mode_chng</td>\n";
2499                         print "<td class=\"link\">";
2500                         if ($action eq 'commitdiff') {
2501                                 # link to patch
2502                                 $patchno++;
2503                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2504                                 print " | ";
2505                         }
2506                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2507                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2508                                       "blob") . " | ";
2509                         if ($have_blame) {
2510                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2511                                                              file_name=>$diff->{'file'})},
2512                                               "blame") . " | ";
2513                         }
2514                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2515                                                      file_name=>$diff->{'file'})},
2516                                       "history");
2517                         print "</td>\n";
2518
2519                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2520                         my $mode_chnge = "";
2521                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2522                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2523                                 if ($from_file_type ne $to_file_type) {
2524                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2525                                 }
2526                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2527                                         if ($from_mode_str && $to_mode_str) {
2528                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2529                                         } elsif ($to_mode_str) {
2530                                                 $mode_chnge .= " mode: $to_mode_str";
2531                                         }
2532                                 }
2533                                 $mode_chnge .= "]</span>\n";
2534                         }
2535                         print "<td>";
2536                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2537                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2538                                       -class => "list"}, esc_path($diff->{'file'}));
2539                         print "</td>\n";
2540                         print "<td>$mode_chnge</td>\n";
2541                         print "<td class=\"link\">";
2542                         if ($action eq 'commitdiff') {
2543                                 # link to patch
2544                                 $patchno++;
2545                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2546                                       " | ";
2547                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2548                                 # "commit" view and modified file (not onlu mode changed)
2549                                 print $cgi->a({-href => href(action=>"blobdiff",
2550                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2551                                                              hash_base=>$hash, hash_parent_base=>$parent,
2552                                                              file_name=>$diff->{'file'})},
2553                                               "diff") .
2554                                       " | ";
2555                         }
2556                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2557                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2558                                        "blob") . " | ";
2559                         if ($have_blame) {
2560                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2561                                                              file_name=>$diff->{'file'})},
2562                                               "blame") . " | ";
2563                         }
2564                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2565                                                      file_name=>$diff->{'file'})},
2566                                       "history");
2567                         print "</td>\n";
2568
2569                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2570                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2571                         my $nstatus = $status_name{$diff->{'status'}};
2572                         my $mode_chng = "";
2573                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2574                                 # mode also for directories, so we cannot use $to_mode_str
2575                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2576                         }
2577                         print "<td>" .
2578                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2579                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2580                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2581                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2582                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2583                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2584                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2585                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2586                               "<td class=\"link\">";
2587                         if ($action eq 'commitdiff') {
2588                                 # link to patch
2589                                 $patchno++;
2590                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2591                                       " | ";
2592                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2593                                 # "commit" view and modified file (not only pure rename or copy)
2594                                 print $cgi->a({-href => href(action=>"blobdiff",
2595                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2596                                                              hash_base=>$hash, hash_parent_base=>$parent,
2597                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2598                                               "diff") .
2599                                       " | ";
2600                         }
2601                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2602                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2603                                       "blob") . " | ";
2604                         if ($have_blame) {
2605                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2606                                                              file_name=>$diff->{'to_file'})},
2607                                               "blame") . " | ";
2608                         }
2609                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2610                                                     file_name=>$diff->{'to_file'})},
2611                                       "history");
2612                         print "</td>\n";
2613
2614                 } # we should not encounter Unmerged (U) or Unknown (X) status
2615                 print "</tr>\n";
2616         }
2617         print "</table>\n";
2618 }
2619
2620 sub git_patchset_body {
2621         my ($fd, $difftree, $hash, @hash_parents) = @_;
2622         my ($hash_parent) = $hash_parents[0];
2623
2624         my $patch_idx = 0;
2625         my $patch_number = 0;
2626         my $patch_line;
2627         my $diffinfo;
2628         my (%from, %to);
2629
2630         print "<div class=\"patchset\">\n";
2631
2632         # skip to first patch
2633         while ($patch_line = <$fd>) {
2634                 chomp $patch_line;
2635
2636                 last if ($patch_line =~ m/^diff /);
2637         }
2638
2639  PATCH:
2640         while ($patch_line) {
2641                 my @diff_header;
2642                 my ($from_id, $to_id);
2643
2644                 # git diff header
2645                 #assert($patch_line =~ m/^diff /) if DEBUG;
2646                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2647                 $patch_number++;
2648                 push @diff_header, $patch_line;
2649
2650                 # extended diff header
2651         EXTENDED_HEADER:
2652                 while ($patch_line = <$fd>) {
2653                         chomp $patch_line;
2654
2655                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2656
2657                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2658                                 $from_id = $1;
2659                                 $to_id   = $2;
2660                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2661                                 $from_id = [ split(',', $1) ];
2662                                 $to_id   = $2;
2663                         }
2664
2665                         push @diff_header, $patch_line;
2666                 }
2667                 my $last_patch_line = $patch_line;
2668
2669                 # check if current patch belong to current raw line
2670                 # and parse raw git-diff line if needed
2671                 if (defined $diffinfo &&
2672                     defined $from_id && defined $to_id &&
2673                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2674                     $diffinfo->{'to_id'} eq $to_id) {
2675                         # this is continuation of a split patch
2676                         print "<div class=\"patch cont\">\n";
2677                 } else {
2678                         # advance raw git-diff output if needed
2679                         $patch_idx++ if defined $diffinfo;
2680
2681                         # read and prepare patch information
2682                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2683                                 # pre-parsed (or generated by hand)
2684                                 $diffinfo = $difftree->[$patch_idx];
2685                         } else {
2686                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2687                         }
2688                         if ($diffinfo->{'nparents'}) {
2689                                 # combined diff
2690                                 $from{'file'} = [];
2691                                 $from{'href'} = [];
2692                                 fill_from_file_info($diffinfo, @hash_parents)
2693                                         unless exists $diffinfo->{'from_file'};
2694                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2695                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2696                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2697                                                 $from{'href'}[$i] = href(action=>"blob",
2698                                                                          hash_base=>$hash_parents[$i],
2699                                                                          hash=>$diffinfo->{'from_id'}[$i],
2700                                                                          file_name=>$from{'file'}[$i]);
2701                                         } else {
2702                                                 $from{'href'}[$i] = undef;
2703                                         }
2704                                 }
2705                         } else {
2706                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2707                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2708                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2709                                                              hash=>$diffinfo->{'from_id'},
2710                                                              file_name=>$from{'file'});
2711                                 } else {
2712                                         delete $from{'href'};
2713                                 }
2714                         }
2715                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2716                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2717                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2718                                                    hash=>$diffinfo->{'to_id'},
2719                                                    file_name=>$to{'file'});
2720                         } else {
2721                                 delete $to{'href'};
2722                         }
2723                         # this is first patch for raw difftree line with $patch_idx index
2724                         # we index @$difftree array from 0, but number patches from 1
2725                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2726                 }
2727
2728                 # print "git diff" header
2729                 $patch_line = shift @diff_header;
2730                 if ($diffinfo->{'nparents'}) {
2731
2732                         # combined diff
2733                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2734                         if ($to{'href'}) {
2735                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2736                                                        esc_path($to{'file'}));
2737                         } else { # file was deleted
2738                                 $patch_line .= esc_path($to{'file'});
2739                         }
2740
2741                 } else {
2742
2743                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2744                         if ($from{'href'}) {
2745                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2746                                                        'a/' . esc_path($from{'file'}));
2747                         } else { # file was added
2748                                 $patch_line .= 'a/' . esc_path($from{'file'});
2749                         }
2750                         $patch_line .= ' ';
2751                         if ($to{'href'}) {
2752                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2753                                                        'b/' . esc_path($to{'file'}));
2754                         } else { # file was deleted
2755                                 $patch_line .= 'b/' . esc_path($to{'file'});
2756                         }
2757
2758                 }
2759                 print "<div class=\"diff header\">$patch_line</div>\n";
2760
2761                 # print extended diff header
2762                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2763         EXTENDED_HEADER:
2764                 foreach $patch_line (@diff_header) {
2765                         # match <path>
2766                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2767                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2768                                                        esc_path($from{'file'}));
2769                         }
2770                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2771                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2772                                                        esc_path($to{'file'}));
2773                         }
2774                         # match single <mode>
2775                         if ($patch_line =~ m/\s(\d{6})$/) {
2776                                 $patch_line .= '<span class="info"> (' .
2777                                                file_type_long($1) .
2778                                                ')</span>';
2779                         }
2780                         # match <hash>
2781                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2782                                 # can match only for combined diff
2783                                 $patch_line = 'index ';
2784                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2785                                         if ($from{'href'}[$i]) {
2786                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2787                                                                         -class=>"hash"},
2788                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2789                                         } else {
2790                                                 $patch_line .= '0' x 7;
2791                                         }
2792                                         # separator
2793                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2794                                 }
2795                                 $patch_line .= '..';
2796                                 if ($to{'href'}) {
2797                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2798                                                                substr($diffinfo->{'to_id'},0,7));
2799                                 } else {
2800                                         $patch_line .= '0' x 7;
2801                                 }
2802
2803                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2804                                 # can match only for ordinary diff
2805                                 my ($from_link, $to_link);
2806                                 if ($from{'href'}) {
2807                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2808                                                              substr($diffinfo->{'from_id'},0,7));
2809                                 } else {
2810                                         $from_link = '0' x 7;
2811                                 }
2812                                 if ($to{'href'}) {
2813                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2814                                                            substr($diffinfo->{'to_id'},0,7));
2815                                 } else {
2816                                         $to_link = '0' x 7;
2817                                 }
2818                                 #affirm {
2819                                 #       my ($from_hash, $to_hash) =
2820                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2821                                 #       my ($from_id, $to_id) =
2822                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2823                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2824                                 #} if DEBUG;
2825                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2826                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2827                         }
2828                         print $patch_line . "<br/>\n";
2829                 }
2830                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2831
2832                 # from-file/to-file diff header
2833                 $patch_line = $last_patch_line;
2834                 if (! $patch_line) {
2835                         print "</div>\n"; # class="patch"
2836                         last PATCH;
2837                 }
2838                 next PATCH if ($patch_line =~ m/^diff /);
2839                 #assert($patch_line =~ m/^---/) if DEBUG;
2840                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2841                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2842                         $patch_line = '--- a/' .
2843                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2844                                               esc_path($from{'file'}));
2845                 }
2846                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2847
2848                 $patch_line = <$fd>;
2849                 chomp $patch_line;
2850
2851                 #assert($patch_line =~ m/^+++/) if DEBUG;
2852                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2853                         $patch_line = '+++ b/' .
2854                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2855                                               esc_path($to{'file'}));
2856                 }
2857                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2858
2859                 # the patch itself
2860         LINE:
2861                 while ($patch_line = <$fd>) {
2862                         chomp $patch_line;
2863
2864                         next PATCH if ($patch_line =~ m/^diff /);
2865
2866                         print format_diff_line($patch_line, \%from, \%to);
2867                 }
2868
2869         } continue {
2870                 print "</div>\n"; # class="patch"
2871         }
2872         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2873
2874         print "</div>\n"; # class="patchset"
2875 }
2876
2877 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2878
2879 sub git_project_list_body {
2880         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2881
2882         my ($check_forks) = gitweb_check_feature('forks');
2883
2884         my @projects;
2885         foreach my $pr (@$projlist) {
2886                 my (@aa) = git_get_last_activity($pr->{'path'});
2887                 unless (@aa) {
2888                         next;
2889                 }
2890                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2891                 if (!defined $pr->{'descr'}) {
2892                         my $descr = git_get_project_description($pr->{'path'}) || "";
2893                         $pr->{'descr_long'} = decode_utf8($descr);
2894                         $pr->{'descr'} = chop_str($descr, 25, 5);
2895                 }
2896                 if (!defined $pr->{'owner'}) {
2897                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2898                 }
2899                 if ($check_forks) {
2900                         my $pname = $pr->{'path'};
2901                         if (($pname =~ s/\.git$//) &&
2902                             ($pname !~ /\/$/) &&
2903                             (-d "$projectroot/$pname")) {
2904                                 $pr->{'forks'} = "-d $projectroot/$pname";
2905                         }
2906                         else {
2907                                 $pr->{'forks'} = 0;
2908                         }
2909                 }
2910                 push @projects, $pr;
2911         }
2912
2913         $order ||= $default_projects_order;
2914         $from = 0 unless defined $from;
2915         $to = $#projects if (!defined $to || $#projects < $to);
2916
2917         print "<table class=\"project_list\">\n";
2918         unless ($no_header) {
2919                 print "<tr>\n";
2920                 if ($check_forks) {
2921                         print "<th></th>\n";
2922                 }
2923                 if ($order eq "project") {
2924                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2925                         print "<th>Project</th>\n";
2926                 } else {
2927                         print "<th>" .
2928                               $cgi->a({-href => href(project=>undef, order=>'project'),
2929                                        -class => "header"}, "Project") .
2930                               "</th>\n";
2931                 }
2932                 if ($order eq "descr") {
2933                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2934                         print "<th>Description</th>\n";
2935                 } else {
2936                         print "<th>" .
2937                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2938                                        -class => "header"}, "Description") .
2939                               "</th>\n";
2940                 }
2941                 if ($order eq "owner") {
2942                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2943                         print "<th>Owner</th>\n";
2944                 } else {
2945                         print "<th>" .
2946                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2947                                        -class => "header"}, "Owner") .
2948                               "</th>\n";
2949                 }
2950                 if ($order eq "age") {
2951                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2952                         print "<th>Last Change</th>\n";
2953                 } else {
2954                         print "<th>" .
2955                               $cgi->a({-href => href(project=>undef, order=>'age'),
2956                                        -class => "header"}, "Last Change") .
2957                               "</th>\n";
2958                 }
2959                 print "<th></th>\n" .
2960                       "</tr>\n";
2961         }
2962         my $alternate = 1;
2963         for (my $i = $from; $i <= $to; $i++) {
2964                 my $pr = $projects[$i];
2965                 if ($alternate) {
2966                         print "<tr class=\"dark\">\n";
2967                 } else {
2968                         print "<tr class=\"light\">\n";
2969                 }
2970                 $alternate ^= 1;
2971                 if ($check_forks) {
2972                         print "<td>";
2973                         if ($pr->{'forks'}) {
2974                                 print "<!-- $pr->{'forks'} -->\n";
2975                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2976                         }
2977                         print "</td>\n";
2978                 }
2979                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2980                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2981                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2982                                         -class => "list", -title => $pr->{'descr_long'}},
2983                                         esc_html($pr->{'descr'})) . "</td>\n" .
2984                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2985                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2986                       $pr->{'age_string'} . "</td>\n" .
2987                       "<td class=\"link\">" .
2988                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2989                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2990                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2991                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2992                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2993                       "</td>\n" .
2994                       "</tr>\n";
2995         }
2996         if (defined $extra) {
2997                 print "<tr>\n";
2998                 if ($check_forks) {
2999                         print "<td></td>\n";
3000                 }
3001                 print "<td colspan=\"5\">$extra</td>\n" .
3002                       "</tr>\n";
3003         }
3004         print "</table>\n";
3005 }
3006
3007 sub git_shortlog_body {
3008         # uses global variable $project
3009         my ($commitlist, $from, $to, $refs, $extra) = @_;
3010
3011         my $have_snapshot = gitweb_have_snapshot();
3012
3013         $from = 0 unless defined $from;
3014         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3015
3016         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3017         my $alternate = 1;
3018         for (my $i = $from; $i <= $to; $i++) {
3019                 my %co = %{$commitlist->[$i]};
3020                 my $commit = $co{'id'};
3021                 my $ref = format_ref_marker($refs, $commit);
3022                 if ($alternate) {
3023                         print "<tr class=\"dark\">\n";
3024                 } else {
3025                         print "<tr class=\"light\">\n";
3026                 }
3027                 $alternate ^= 1;
3028                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3029                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3030                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3031                       "<td>";
3032                 print format_subject_html($co{'title'}, $co{'title_short'},
3033                                           href(action=>"commit", hash=>$commit), $ref);
3034                 print "</td>\n" .
3035                       "<td class=\"link\">" .
3036                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3037                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3038                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3039                 if ($have_snapshot) {
3040                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3041                 }
3042                 print "</td>\n" .
3043                       "</tr>\n";
3044         }
3045         if (defined $extra) {
3046                 print "<tr>\n" .
3047                       "<td colspan=\"4\">$extra</td>\n" .
3048                       "</tr>\n";
3049         }
3050         print "</table>\n";
3051 }
3052
3053 sub git_history_body {
3054         # Warning: assumes constant type (blob or tree) during history
3055         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3056
3057         $from = 0 unless defined $from;
3058         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3059
3060         print "<table class=\"history\" cellspacing=\"0\">\n";
3061         my $alternate = 1;
3062         for (my $i = $from; $i <= $to; $i++) {
3063                 my %co = %{$commitlist->[$i]};
3064                 if (!%co) {
3065                         next;
3066                 }
3067                 my $commit = $co{'id'};
3068
3069                 my $ref = format_ref_marker($refs, $commit);
3070
3071                 if ($alternate) {
3072                         print "<tr class=\"dark\">\n";
3073                 } else {
3074                         print "<tr class=\"light\">\n";
3075                 }
3076                 $alternate ^= 1;
3077                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3078                       # shortlog uses      chop_str($co{'author_name'}, 10)
3079                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3080                       "<td>";
3081                 # originally git_history used chop_str($co{'title'}, 50)
3082                 print format_subject_html($co{'title'}, $co{'title_short'},
3083                                           href(action=>"commit", hash=>$commit), $ref);
3084                 print "</td>\n" .
3085                       "<td class=\"link\">" .
3086                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3087                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3088
3089                 if ($ftype eq 'blob') {
3090                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3091                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3092                         if (defined $blob_current && defined $blob_parent &&
3093                                         $blob_current ne $blob_parent) {
3094                                 print " | " .
3095                                         $cgi->a({-href => href(action=>"blobdiff",
3096                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3097                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3098                                                                file_name=>$file_name)},
3099                                                 "diff to current");
3100                         }
3101                 }
3102                 print "</td>\n" .
3103                       "</tr>\n";
3104         }
3105         if (defined $extra) {
3106                 print "<tr>\n" .
3107                       "<td colspan=\"4\">$extra</td>\n" .
3108                       "</tr>\n";
3109         }
3110         print "</table>\n";
3111 }
3112
3113 sub git_tags_body {
3114         # uses global variable $project
3115         my ($taglist, $from, $to, $extra) = @_;
3116         $from = 0 unless defined $from;
3117         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3118
3119         print "<table class=\"tags\" cellspacing=\"0\">\n";
3120         my $alternate = 1;
3121         for (my $i = $from; $i <= $to; $i++) {
3122                 my $entry = $taglist->[$i];
3123                 my %tag = %$entry;
3124                 my $comment = $tag{'subject'};
3125                 my $comment_short;
3126                 if (defined $comment) {
3127                         $comment_short = chop_str($comment, 30, 5);
3128                 }
3129                 if ($alternate) {
3130                         print "<tr class=\"dark\">\n";
3131                 } else {
3132                         print "<tr class=\"light\">\n";
3133                 }
3134                 $alternate ^= 1;
3135                 if (defined $tag{'age'}) {
3136                         print "<td><i>$tag{'age'}</i></td>\n";
3137                 } else {
3138                         print "<td></td>\n";
3139                 }
3140                 print "<td>" .
3141                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3142                                -class => "list name"}, esc_html($tag{'name'})) .
3143                       "</td>\n" .
3144                       "<td>";
3145                 if (defined $comment) {
3146                         print format_subject_html($comment, $comment_short,
3147                                                   href(action=>"tag", hash=>$tag{'id'}));
3148                 }
3149                 print "</td>\n" .
3150                       "<td class=\"selflink\">";
3151                 if ($tag{'type'} eq "tag") {
3152                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3153                 } else {
3154                         print "&nbsp;";
3155                 }
3156                 print "</td>\n" .
3157                       "<td class=\"link\">" . " | " .
3158                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3159                 if ($tag{'reftype'} eq "commit") {
3160                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3161                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3162                 } elsif ($tag{'reftype'} eq "blob") {
3163                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3164                 }
3165                 print "</td>\n" .
3166                       "</tr>";
3167         }
3168         if (defined $extra) {
3169                 print "<tr>\n" .
3170                       "<td colspan=\"5\">$extra</td>\n" .
3171                       "</tr>\n";
3172         }
3173         print "</table>\n";
3174 }
3175
3176 sub git_heads_body {
3177         # uses global variable $project
3178         my ($headlist, $head, $from, $to, $extra) = @_;
3179         $from = 0 unless defined $from;
3180         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3181
3182         print "<table class=\"heads\" cellspacing=\"0\">\n";
3183         my $alternate = 1;
3184         for (my $i = $from; $i <= $to; $i++) {
3185                 my $entry = $headlist->[$i];
3186                 my %ref = %$entry;
3187                 my $curr = $ref{'id'} eq $head;
3188                 if ($alternate) {
3189                         print "<tr class=\"dark\">\n";
3190                 } else {
3191                         print "<tr class=\"light\">\n";
3192                 }
3193                 $alternate ^= 1;
3194                 print "<td><i>$ref{'age'}</i></td>\n" .
3195                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3196                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3197                                -class => "list name"},esc_html($ref{'name'})) .
3198                       "</td>\n" .
3199                       "<td class=\"link\">" .
3200                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3201                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3202                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3203                       "</td>\n" .
3204                       "</tr>";
3205         }
3206         if (defined $extra) {
3207                 print "<tr>\n" .
3208                       "<td colspan=\"3\">$extra</td>\n" .
3209                       "</tr>\n";
3210         }
3211         print "</table>\n";
3212 }
3213
3214 sub git_search_grep_body {
3215         my ($commitlist, $from, $to, $extra) = @_;
3216         $from = 0 unless defined $from;
3217         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3218
3219         print "<table class=\"grep\" cellspacing=\"0\">\n";
3220         my $alternate = 1;
3221         for (my $i = $from; $i <= $to; $i++) {
3222                 my %co = %{$commitlist->[$i]};
3223                 if (!%co) {
3224                         next;
3225                 }
3226                 my $commit = $co{'id'};
3227                 if ($alternate) {
3228                         print "<tr class=\"dark\">\n";
3229                 } else {
3230                         print "<tr class=\"light\">\n";
3231                 }
3232                 $alternate ^= 1;
3233                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3234                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3235                       "<td>" .
3236                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3237                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3238                 my $comment = $co{'comment'};
3239                 foreach my $line (@$comment) {
3240                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3241                                 my $lead = esc_html($1) || "";
3242                                 $lead = chop_str($lead, 30, 10);
3243                                 my $match = esc_html($2) || "";
3244                                 my $trail = esc_html($3) || "";
3245                                 $trail = chop_str($trail, 30, 10);
3246                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3247                                 print chop_str($text, 80, 5) . "<br/>\n";
3248                         }
3249                 }
3250                 print "</td>\n" .
3251                       "<td class=\"link\">" .
3252                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3253                       " | " .
3254                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3255                 print "</td>\n" .
3256                       "</tr>\n";
3257         }
3258         if (defined $extra) {
3259                 print "<tr>\n" .
3260                       "<td colspan=\"3\">$extra</td>\n" .
3261                       "</tr>\n";
3262         }
3263         print "</table>\n";
3264 }
3265
3266 ## ======================================================================
3267 ## ======================================================================
3268 ## actions
3269
3270 sub git_project_list {
3271         my $order = $cgi->param('o');
3272         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3273                 die_error(undef, "Unknown order parameter");
3274         }
3275
3276         my @list = git_get_projects_list();
3277         if (!@list) {
3278                 die_error(undef, "No projects found");
3279         }
3280
3281         git_header_html();
3282         if (-f $home_text) {
3283                 print "<div class=\"index_include\">\n";
3284                 open (my $fd, $home_text);
3285                 print <$fd>;
3286                 close $fd;
3287                 print "</div>\n";
3288         }
3289         git_project_list_body(\@list, $order);
3290         git_footer_html();
3291 }
3292
3293 sub git_forks {
3294         my $order = $cgi->param('o');
3295         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3296                 die_error(undef, "Unknown order parameter");
3297         }
3298
3299         my @list = git_get_projects_list($project);
3300         if (!@list) {
3301                 die_error(undef, "No forks found");
3302         }
3303
3304         git_header_html();
3305         git_print_page_nav('','');
3306         git_print_header_div('summary', "$project forks");
3307         git_project_list_body(\@list, $order);
3308         git_footer_html();
3309 }
3310
3311 sub git_project_index {
3312         my @projects = git_get_projects_list($project);
3313
3314         print $cgi->header(
3315                 -type => 'text/plain',
3316                 -charset => 'utf-8',
3317                 -content_disposition => 'inline; filename="index.aux"');
3318
3319         foreach my $pr (@projects) {
3320                 if (!exists $pr->{'owner'}) {
3321                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3322                 }
3323
3324                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3325                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3326                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3327                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3328                 $path  =~ s/ /\+/g;
3329                 $owner =~ s/ /\+/g;
3330
3331                 print "$path $owner\n";
3332         }
3333 }
3334
3335 sub git_summary {
3336         my $descr = git_get_project_description($project) || "none";
3337         my %co = parse_commit("HEAD");
3338         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3339         my $head = $co{'id'};
3340
3341         my $owner = git_get_project_owner($project);
3342
3343         my $refs = git_get_references();
3344         # These get_*_list functions return one more to allow us to see if
3345         # there are more ...
3346         my @taglist  = git_get_tags_list(16);
3347         my @headlist = git_get_heads_list(16);
3348         my @forklist;
3349         my ($check_forks) = gitweb_check_feature('forks');
3350
3351         if ($check_forks) {
3352                 @forklist = git_get_projects_list($project);
3353         }
3354
3355         git_header_html();
3356         git_print_page_nav('summary','', $head);
3357
3358         print "<div class=\"title\">&nbsp;</div>\n";
3359         print "<table cellspacing=\"0\">\n" .
3360               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3361               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3362               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3363         # use per project git URL list in $projectroot/$project/cloneurl
3364         # or make project git URL from git base URL and project name
3365         my $url_tag = "URL";
3366         my @url_list = git_get_project_url_list($project);
3367         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3368         foreach my $git_url (@url_list) {
3369                 next unless $git_url;
3370                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3371                 $url_tag = "";
3372         }
3373         print "</table>\n";
3374
3375         if (-s "$projectroot/$project/README.html") {
3376                 if (open my $fd, "$projectroot/$project/README.html") {
3377                         print "<div class=\"title\">readme</div>\n";
3378                         print $_ while (<$fd>);
3379                         close $fd;
3380                 }
3381         }
3382
3383         # we need to request one more than 16 (0..15) to check if
3384         # those 16 are all
3385         my @commitlist = parse_commits($head, 17);
3386         git_print_header_div('shortlog');
3387         git_shortlog_body(\@commitlist, 0, 15, $refs,
3388                           $#commitlist <=  15 ? undef :
3389                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3390
3391         if (@taglist) {
3392                 git_print_header_div('tags');
3393                 git_tags_body(\@taglist, 0, 15,
3394                               $#taglist <=  15 ? undef :
3395                               $cgi->a({-href => href(action=>"tags")}, "..."));
3396         }
3397
3398         if (@headlist) {
3399                 git_print_header_div('heads');
3400                 git_heads_body(\@headlist, $head, 0, 15,
3401                                $#headlist <= 15 ? undef :
3402                                $cgi->a({-href => href(action=>"heads")}, "..."));
3403         }
3404
3405         if (@forklist) {
3406                 git_print_header_div('forks');
3407                 git_project_list_body(\@forklist, undef, 0, 15,
3408                                       $#forklist <= 15 ? undef :
3409                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3410                                       'noheader');
3411         }
3412
3413         git_footer_html();
3414 }
3415
3416 sub git_tag {
3417         my $head = git_get_head_hash($project);
3418         git_header_html();
3419         git_print_page_nav('','', $head,undef,$head);
3420         my %tag = parse_tag($hash);
3421
3422         if (! %tag) {
3423                 die_error(undef, "Unknown tag object");
3424         }
3425
3426         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3427         print "<div class=\"title_text\">\n" .
3428               "<table cellspacing=\"0\">\n" .
3429               "<tr>\n" .
3430               "<td>object</td>\n" .
3431               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3432                                $tag{'object'}) . "</td>\n" .
3433               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3434                                               $tag{'type'}) . "</td>\n" .
3435               "</tr>\n";
3436         if (defined($tag{'author'})) {
3437                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3438                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3439                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3440                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3441                         "</td></tr>\n";
3442         }
3443         print "</table>\n\n" .
3444               "</div>\n";
3445         print "<div class=\"page_body\">";
3446         my $comment = $tag{'comment'};
3447         foreach my $line (@$comment) {
3448                 chomp $line;
3449                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3450         }
3451         print "</div>\n";
3452         git_footer_html();
3453 }
3454
3455 sub git_blame2 {
3456         my $fd;
3457         my $ftype;
3458
3459         my ($have_blame) = gitweb_check_feature('blame');
3460         if (!$have_blame) {
3461                 die_error('403 Permission denied', "Permission denied");
3462         }
3463         die_error('404 Not Found', "File name not defined") if (!$file_name);
3464         $hash_base ||= git_get_head_hash($project);
3465         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3466         my %co = parse_commit($hash_base)
3467                 or die_error(undef, "Reading commit failed");
3468         if (!defined $hash) {
3469                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3470                         or die_error(undef, "Error looking up file");
3471         }
3472         $ftype = git_get_type($hash);
3473         if ($ftype !~ "blob") {
3474                 die_error('400 Bad Request', "Object is not a blob");
3475         }
3476         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3477               $file_name, $hash_base)
3478                 or die_error(undef, "Open git-blame failed");
3479         git_header_html();
3480         my $formats_nav =
3481                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3482                         "blob") .
3483                 " | " .
3484                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3485                         "history") .
3486                 " | " .
3487                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3488                         "HEAD");
3489         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3490         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3491         git_print_page_path($file_name, $ftype, $hash_base);
3492         my @rev_color = (qw(light2 dark2));
3493         my $num_colors = scalar(@rev_color);
3494         my $current_color = 0;
3495         my $last_rev;
3496         print <<HTML;
3497 <div class="page_body">
3498 <table class="blame">
3499 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3500 HTML
3501         my %metainfo = ();
3502         while (1) {
3503                 $_ = <$fd>;
3504                 last unless defined $_;
3505                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3506                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3507                 if (!exists $metainfo{$full_rev}) {
3508                         $metainfo{$full_rev} = {};
3509                 }
3510                 my $meta = $metainfo{$full_rev};
3511                 while (<$fd>) {
3512                         last if (s/^\t//);
3513                         if (/^(\S+) (.*)$/) {
3514                                 $meta->{$1} = $2;
3515                         }
3516                 }
3517                 my $data = $_;
3518                 chomp $data;
3519                 my $rev = substr($full_rev, 0, 8);
3520                 my $author = $meta->{'author'};
3521                 my %date = parse_date($meta->{'author-time'},
3522                                       $meta->{'author-tz'});
3523                 my $date = $date{'iso-tz'};
3524                 if ($group_size) {
3525                         $current_color = ++$current_color % $num_colors;
3526                 }
3527                 print "<tr class=\"$rev_color[$current_color]\">\n";
3528                 if ($group_size) {
3529                         print "<td class=\"sha1\"";
3530                         print " title=\"". esc_html($author) . ", $date\"";
3531                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3532                         print ">";
3533                         print $cgi->a({-href => href(action=>"commit",
3534                                                      hash=>$full_rev,
3535                                                      file_name=>$file_name)},
3536                                       esc_html($rev));
3537                         print "</td>\n";
3538                 }
3539                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3540                         or die_error(undef, "Open git-rev-parse failed");
3541                 my $parent_commit = <$dd>;
3542                 close $dd;
3543                 chomp($parent_commit);
3544                 my $blamed = href(action => 'blame',
3545                                   file_name => $meta->{'filename'},
3546                                   hash_base => $parent_commit);
3547                 print "<td class=\"linenr\">";
3548                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3549                                 -id => "l$lineno",
3550                                 -class => "linenr" },
3551                               esc_html($lineno));
3552                 print "</td>";
3553                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3554                 print "</tr>\n";
3555         }
3556         print "</table>\n";
3557         print "</div>";
3558         close $fd
3559                 or print "Reading blob failed\n";
3560         git_footer_html();
3561 }
3562
3563 sub git_blame {
3564         my $fd;
3565
3566         my ($have_blame) = gitweb_check_feature('blame');
3567         if (!$have_blame) {
3568                 die_error('403 Permission denied', "Permission denied");
3569         }
3570         die_error('404 Not Found', "File name not defined") if (!$file_name);
3571         $hash_base ||= git_get_head_hash($project);
3572         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3573         my %co = parse_commit($hash_base)
3574                 or die_error(undef, "Reading commit failed");
3575         if (!defined $hash) {
3576                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3577                         or die_error(undef, "Error lookup file");
3578         }
3579         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3580                 or die_error(undef, "Open git-annotate failed");
3581         git_header_html();
3582         my $formats_nav =
3583                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3584                         "blob") .
3585                 " | " .
3586                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3587                         "history") .
3588                 " | " .
3589                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3590                         "HEAD");
3591         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3592         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3593         git_print_page_path($file_name, 'blob', $hash_base);
3594         print "<div class=\"page_body\">\n";
3595         print <<HTML;
3596 <table class="blame">
3597   <tr>
3598     <th>Commit</th>
3599     <th>Age</th>
3600     <th>Author</th>
3601     <th>Line</th>
3602     <th>Data</th>
3603   </tr>
3604 HTML
3605         my @line_class = (qw(light dark));
3606         my $line_class_len = scalar (@line_class);
3607         my $line_class_num = $#line_class;
3608         while (my $line = <$fd>) {
3609                 my $long_rev;
3610                 my $short_rev;
3611                 my $author;
3612                 my $time;
3613                 my $lineno;
3614                 my $data;
3615                 my $age;
3616                 my $age_str;
3617                 my $age_class;
3618
3619                 chomp $line;
3620                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3621
3622                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3623                         $long_rev = $1;
3624                         $author   = $2;
3625                         $time     = $3;
3626                         $lineno   = $4;
3627                         $data     = $5;
3628                 } else {
3629                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3630                         next;
3631                 }
3632                 $short_rev  = substr ($long_rev, 0, 8);
3633                 $age        = time () - $time;
3634                 $age_str    = age_string ($age);
3635                 $age_str    =~ s/ /&nbsp;/g;
3636                 $age_class  = age_class($age);
3637                 $author     = esc_html ($author);
3638                 $author     =~ s/ /&nbsp;/g;
3639
3640                 $data = untabify($data);
3641                 $data = esc_html ($data);
3642
3643                 print <<HTML;
3644   <tr class="$line_class[$line_class_num]">
3645     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3646     <td class="$age_class">$age_str</td>
3647     <td>$author</td>
3648     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3649     <td class="pre">$data</td>
3650   </tr>
3651 HTML
3652         } # while (my $line = <$fd>)
3653         print "</table>\n\n";
3654         close $fd
3655                 or print "Reading blob failed.\n";
3656         print "</div>";
3657         git_footer_html();
3658 }
3659
3660 sub git_tags {
3661         my $head = git_get_head_hash($project);
3662         git_header_html();
3663         git_print_page_nav('','', $head,undef,$head);
3664         git_print_header_div('summary', $project);
3665
3666         my @tagslist = git_get_tags_list();
3667         if (@tagslist) {
3668                 git_tags_body(\@tagslist);
3669         }
3670         git_footer_html();
3671 }
3672
3673 sub git_heads {
3674         my $head = git_get_head_hash($project);
3675         git_header_html();
3676         git_print_page_nav('','', $head,undef,$head);
3677         git_print_header_div('summary', $project);
3678
3679         my @headslist = git_get_heads_list();
3680         if (@headslist) {
3681                 git_heads_body(\@headslist, $head);
3682         }
3683         git_footer_html();
3684 }
3685
3686 sub git_blob_plain {
3687         my $expires;
3688
3689         if (!defined $hash) {
3690                 if (defined $file_name) {
3691                         my $base = $hash_base || git_get_head_hash($project);
3692                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3693                                 or die_error(undef, "Error lookup file");
3694                 } else {
3695                         die_error(undef, "No file name defined");
3696                 }
3697         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3698                 # blobs defined by non-textual hash id's can be cached
3699                 $expires = "+1d";
3700         }
3701
3702         my $type = shift;
3703         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3704                 or die_error(undef, "Couldn't cat $file_name, $hash");
3705
3706         $type ||= blob_mimetype($fd, $file_name);
3707
3708         # save as filename, even when no $file_name is given
3709         my $save_as = "$hash";
3710         if (defined $file_name) {
3711                 $save_as = $file_name;
3712         } elsif ($type =~ m/^text\//) {
3713                 $save_as .= '.txt';
3714         }
3715
3716         print $cgi->header(
3717                 -type => "$type",
3718                 -expires=>$expires,
3719                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3720         undef $/;
3721         binmode STDOUT, ':raw';
3722         print <$fd>;
3723         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3724         $/ = "\n";
3725         close $fd;
3726 }
3727
3728 sub git_blob {
3729         my $expires;
3730
3731         if (!defined $hash) {
3732                 if (defined $file_name) {
3733                         my $base = $hash_base || git_get_head_hash($project);
3734                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3735                                 or die_error(undef, "Error lookup file");
3736                 } else {
3737                         die_error(undef, "No file name defined");
3738                 }
3739         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3740                 # blobs defined by non-textual hash id's can be cached
3741                 $expires = "+1d";
3742         }
3743
3744         my ($have_blame) = gitweb_check_feature('blame');
3745         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3746                 or die_error(undef, "Couldn't cat $file_name, $hash");
3747         my $mimetype = blob_mimetype($fd, $file_name);
3748         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3749                 close $fd;
3750                 return git_blob_plain($mimetype);
3751         }
3752         # we can have blame only for text/* mimetype
3753         $have_blame &&= ($mimetype =~ m!^text/!);
3754
3755         git_header_html(undef, $expires);
3756         my $formats_nav = '';
3757         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3758                 if (defined $file_name) {
3759                         if ($have_blame) {
3760                                 $formats_nav .=
3761                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3762                                                                hash=>$hash, file_name=>$file_name)},
3763                                                 "blame") .
3764                                         " | ";
3765                         }
3766                         $formats_nav .=
3767                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3768                                                        hash=>$hash, file_name=>$file_name)},
3769                                         "history") .
3770                                 " | " .
3771                                 $cgi->a({-href => href(action=>"blob_plain",
3772                                                        hash=>$hash, file_name=>$file_name)},
3773                                         "raw") .
3774                                 " | " .
3775                                 $cgi->a({-href => href(action=>"blob",
3776                                                        hash_base=>"HEAD", file_name=>$file_name)},
3777                                         "HEAD");
3778                 } else {
3779                         $formats_nav .=
3780                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3781                 }
3782                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3783                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3784         } else {
3785                 print "<div class=\"page_nav\">\n" .
3786                       "<br/><br/></div>\n" .
3787                       "<div class=\"title\">$hash</div>\n";
3788         }
3789         git_print_page_path($file_name, "blob", $hash_base);
3790         print "<div class=\"page_body\">\n";
3791         if ($mimetype =~ m!^text/!) {
3792                 my $nr;
3793                 while (my $line = <$fd>) {
3794                         chomp $line;
3795                         $nr++;
3796                         $line = untabify($line);
3797                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3798                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3799                 }
3800         } elsif ($mimetype =~ m!^image/!) {
3801                 print qq!<img type="$mimetype"!;
3802                 if ($file_name) {
3803                         print qq! alt="$file_name" title="$file_name"!;
3804                 }
3805                 print qq! src="! .
3806                       href(action=>"blob_plain", hash=>$hash,
3807                            hash_base=>$hash_base, file_name=>$file_name) .
3808                       qq!" />\n!;
3809         }
3810         close $fd
3811                 or print "Reading blob failed.\n";
3812         print "</div>";
3813         git_footer_html();
3814 }
3815
3816 sub git_tree {
3817         my $have_snapshot = gitweb_have_snapshot();
3818
3819         if (!defined $hash_base) {
3820                 $hash_base = "HEAD";
3821         }
3822         if (!defined $hash) {
3823                 if (defined $file_name) {
3824                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3825                 } else {
3826                         $hash = $hash_base;
3827                 }
3828         }
3829         $/ = "\0";
3830         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3831                 or die_error(undef, "Open git-ls-tree failed");
3832         my @entries = map { chomp; $_ } <$fd>;
3833         close $fd or die_error(undef, "Reading tree failed");
3834         $/ = "\n";
3835
3836         my $refs = git_get_references();
3837         my $ref = format_ref_marker($refs, $hash_base);
3838         git_header_html();
3839         my $basedir = '';
3840         my ($have_blame) = gitweb_check_feature('blame');
3841         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3842                 my @views_nav = ();
3843                 if (defined $file_name) {
3844                         push @views_nav,
3845                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3846                                                        hash=>$hash, file_name=>$file_name)},
3847                                         "history"),
3848                                 $cgi->a({-href => href(action=>"tree",
3849                                                        hash_base=>"HEAD", file_name=>$file_name)},
3850                                         "HEAD"),
3851                 }
3852                 if ($have_snapshot) {
3853                         # FIXME: Should be available when we have no hash base as well.
3854                         push @views_nav,
3855                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3856                                         "snapshot");
3857                 }
3858                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3859                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3860         } else {
3861                 undef $hash_base;
3862                 print "<div class=\"page_nav\">\n";
3863                 print "<br/><br/></div>\n";
3864                 print "<div class=\"title\">$hash</div>\n";
3865         }
3866         if (defined $file_name) {
3867                 $basedir = $file_name;
3868                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3869                         $basedir .= '/';
3870                 }
3871         }
3872         git_print_page_path($file_name, 'tree', $hash_base);
3873         print "<div class=\"page_body\">\n";
3874         print "<table cellspacing=\"0\">\n";
3875         my $alternate = 1;
3876         # '..' (top directory) link if possible
3877         if (defined $hash_base &&
3878             defined $file_name && $file_name =~ m![^/]+$!) {
3879                 if ($alternate) {
3880                         print "<tr class=\"dark\">\n";
3881                 } else {
3882                         print "<tr class=\"light\">\n";
3883                 }
3884                 $alternate ^= 1;
3885
3886                 my $up = $file_name;
3887                 $up =~ s!/?[^/]+$!!;
3888                 undef $up unless $up;
3889                 # based on git_print_tree_entry
3890                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3891                 print '<td class="list">';
3892                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3893                                              file_name=>$up)},
3894                               "..");
3895                 print "</td>\n";
3896                 print "<td class=\"link\"></td>\n";
3897
3898                 print "</tr>\n";
3899         }
3900         foreach my $line (@entries) {
3901                 my %t = parse_ls_tree_line($line, -z => 1);
3902
3903                 if ($alternate) {
3904                         print "<tr class=\"dark\">\n";
3905                 } else {
3906                         print "<tr class=\"light\">\n";
3907                 }
3908                 $alternate ^= 1;
3909
3910                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3911
3912                 print "</tr>\n";
3913         }
3914         print "</table>\n" .
3915               "</div>";
3916         git_footer_html();
3917 }
3918
3919 sub git_snapshot {
3920         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3921         my $have_snapshot = (defined $ctype && defined $suffix);
3922         if (!$have_snapshot) {
3923                 die_error('403 Permission denied', "Permission denied");
3924         }
3925
3926         if (!defined $hash) {
3927                 $hash = git_get_head_hash($project);
3928         }
3929
3930         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3931
3932         print $cgi->header(
3933                 -type => "application/$ctype",
3934                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3935                 -status => '200 OK');
3936
3937         my $git = git_cmd_str();
3938         my $name = $project;
3939         $name =~ s/\047/\047\\\047\047/g;
3940         open my $fd, "-|",
3941                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3942                 or die_error(undef, "Execute git-tar-tree failed");
3943         binmode STDOUT, ':raw';
3944         print <$fd>;
3945         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3946         close $fd;
3947
3948 }
3949
3950 sub git_log {
3951         my $head = git_get_head_hash($project);
3952         if (!defined $hash) {
3953                 $hash = $head;
3954         }
3955         if (!defined $page) {
3956                 $page = 0;
3957         }
3958         my $refs = git_get_references();
3959
3960         my @commitlist = parse_commits($hash, 101, (100 * $page));
3961
3962         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3963
3964         git_header_html();
3965         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3966
3967         if (!@commitlist) {
3968                 my %co = parse_commit($hash);
3969
3970                 git_print_header_div('summary', $project);
3971                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3972         }
3973         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3974         for (my $i = 0; $i <= $to; $i++) {
3975                 my %co = %{$commitlist[$i]};
3976                 next if !%co;
3977                 my $commit = $co{'id'};
3978                 my $ref = format_ref_marker($refs, $commit);
3979                 my %ad = parse_date($co{'author_epoch'});
3980                 git_print_header_div('commit',
3981                                "<span class=\"age\">$co{'age_string'}</span>" .
3982                                esc_html($co{'title'}) . $ref,
3983                                $commit);
3984                 print "<div class=\"title_text\">\n" .
3985                       "<div class=\"log_link\">\n" .
3986                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3987                       " | " .
3988                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3989                       " | " .
3990                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3991                       "<br/>\n" .
3992                       "</div>\n" .
3993                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3994                       "</div>\n";
3995
3996                 print "<div class=\"log_body\">\n";
3997                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3998                 print "</div>\n";
3999         }
4000         if ($#commitlist >= 100) {
4001                 print "<div class=\"page_nav\">\n";
4002                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4003                                -accesskey => "n", -title => "Alt-n"}, "next");
4004                 print "</div>\n";
4005         }
4006         git_footer_html();
4007 }
4008
4009 sub git_commit {
4010         $hash ||= $hash_base || "HEAD";
4011         my %co = parse_commit($hash);
4012         if (!%co) {
4013                 die_error(undef, "Unknown commit object");
4014         }
4015         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4016         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4017
4018         my $parent  = $co{'parent'};
4019         my $parents = $co{'parents'}; # listref
4020
4021         # we need to prepare $formats_nav before any parameter munging
4022         my $formats_nav;
4023         if (!defined $parent) {
4024                 # --root commitdiff
4025                 $formats_nav .= '(initial)';
4026         } elsif (@$parents == 1) {
4027                 # single parent commit
4028                 $formats_nav .=
4029                         '(parent: ' .
4030                         $cgi->a({-href => href(action=>"commit",
4031                                                hash=>$parent)},
4032                                 esc_html(substr($parent, 0, 7))) .
4033                         ')';
4034         } else {
4035                 # merge commit
4036                 $formats_nav .=
4037                         '(merge: ' .
4038                         join(' ', map {
4039                                 $cgi->a({-href => href(action=>"commit",
4040                                                        hash=>$_)},
4041                                         esc_html(substr($_, 0, 7)));
4042                         } @$parents ) .
4043                         ')';
4044         }
4045
4046         if (!defined $parent) {
4047                 $parent = "--root";
4048         }
4049         my @difftree;
4050         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4051                 @diff_opts,
4052                 (@$parents <= 1 ? $parent : '-c'),
4053                 $hash, "--"
4054                 or die_error(undef, "Open git-diff-tree failed");
4055         @difftree = map { chomp; $_ } <$fd>;
4056         close $fd or die_error(undef, "Reading git-diff-tree failed");
4057
4058         # non-textual hash id's can be cached
4059         my $expires;
4060         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4061                 $expires = "+1d";
4062         }
4063         my $refs = git_get_references();
4064         my $ref = format_ref_marker($refs, $co{'id'});
4065
4066         my $have_snapshot = gitweb_have_snapshot();
4067
4068         git_header_html(undef, $expires);
4069         git_print_page_nav('commit', '',
4070                            $hash, $co{'tree'}, $hash,
4071                            $formats_nav);
4072
4073         if (defined $co{'parent'}) {
4074                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4075         } else {
4076                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4077         }
4078         print "<div class=\"title_text\">\n" .
4079               "<table cellspacing=\"0\">\n";
4080         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4081               "<tr>" .
4082               "<td></td><td> $ad{'rfc2822'}";
4083         if ($ad{'hour_local'} < 6) {
4084                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4085                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4086         } else {
4087                 printf(" (%02d:%02d %s)",
4088                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4089         }
4090         print "</td>" .
4091               "</tr>\n";
4092         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4093         print "<tr><td></td><td> $cd{'rfc2822'}" .
4094               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4095               "</td></tr>\n";
4096         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4097         print "<tr>" .
4098               "<td>tree</td>" .
4099               "<td class=\"sha1\">" .
4100               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4101                        class => "list"}, $co{'tree'}) .
4102               "</td>" .
4103               "<td class=\"link\">" .
4104               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4105                       "tree");
4106         if ($have_snapshot) {
4107                 print " | " .
4108                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4109         }
4110         print "</td>" .
4111               "</tr>\n";
4112
4113         foreach my $par (@$parents) {
4114                 print "<tr>" .
4115                       "<td>parent</td>" .
4116                       "<td class=\"sha1\">" .
4117                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4118                                class => "list"}, $par) .
4119                       "</td>" .
4120                       "<td class=\"link\">" .
4121                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4122                       " | " .
4123                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4124                       "</td>" .
4125                       "</tr>\n";
4126         }
4127         print "</table>".
4128               "</div>\n";
4129
4130         print "<div class=\"page_body\">\n";
4131         git_print_log($co{'comment'});
4132         print "</div>\n";
4133
4134         git_difftree_body(\@difftree, $hash, @$parents);
4135
4136         git_footer_html();
4137 }
4138
4139 sub git_object {
4140         # object is defined by:
4141         # - hash or hash_base alone
4142         # - hash_base and file_name
4143         my $type;
4144
4145         # - hash or hash_base alone
4146         if ($hash || ($hash_base && !defined $file_name)) {
4147                 my $object_id = $hash || $hash_base;
4148
4149                 my $git_command = git_cmd_str();
4150                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4151                         or die_error('404 Not Found', "Object does not exist");
4152                 $type = <$fd>;
4153                 chomp $type;
4154                 close $fd
4155                         or die_error('404 Not Found', "Object does not exist");
4156
4157         # - hash_base and file_name
4158         } elsif ($hash_base && defined $file_name) {
4159                 $file_name =~ s,/+$,,;
4160
4161                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4162                         or die_error('404 Not Found', "Base object does not exist");
4163
4164                 # here errors should not hapen
4165                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4166                         or die_error(undef, "Open git-ls-tree failed");
4167                 my $line = <$fd>;
4168                 close $fd;
4169
4170                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4171                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4172                         die_error('404 Not Found', "File or directory for given base does not exist");
4173                 }
4174                 $type = $2;
4175                 $hash = $3;
4176         } else {
4177                 die_error('404 Not Found', "Not enough information to find object");
4178         }
4179
4180         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4181                                           hash=>$hash, hash_base=>$hash_base,
4182                                           file_name=>$file_name),
4183                              -status => '302 Found');
4184 }
4185
4186 sub git_blobdiff {
4187         my $format = shift || 'html';
4188
4189         my $fd;
4190         my @difftree;
4191         my %diffinfo;
4192         my $expires;
4193
4194         # preparing $fd and %diffinfo for git_patchset_body
4195         # new style URI
4196         if (defined $hash_base && defined $hash_parent_base) {
4197                 if (defined $file_name) {
4198                         # read raw output
4199                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4200                                 $hash_parent_base, $hash_base,
4201                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4202                                 or die_error(undef, "Open git-diff-tree failed");
4203                         @difftree = map { chomp; $_ } <$fd>;
4204                         close $fd
4205                                 or die_error(undef, "Reading git-diff-tree failed");
4206                         @difftree
4207                                 or die_error('404 Not Found', "Blob diff not found");
4208
4209                 } elsif (defined $hash &&
4210                          $hash =~ /[0-9a-fA-F]{40}/) {
4211                         # try to find filename from $hash
4212
4213                         # read filtered raw output
4214                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4215                                 $hash_parent_base, $hash_base, "--"
4216                                 or die_error(undef, "Open git-diff-tree failed");
4217                         @difftree =
4218                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4219                                 # $hash == to_id
4220                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4221                                 map { chomp; $_ } <$fd>;
4222                         close $fd
4223                                 or die_error(undef, "Reading git-diff-tree failed");
4224                         @difftree
4225                                 or die_error('404 Not Found', "Blob diff not found");
4226
4227                 } else {
4228                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4229                 }
4230
4231                 if (@difftree > 1) {
4232                         die_error('404 Not Found', "Ambiguous blob diff specification");
4233                 }
4234
4235                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4236                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4237                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4238
4239                 $hash_parent ||= $diffinfo{'from_id'};
4240                 $hash        ||= $diffinfo{'to_id'};
4241
4242                 # non-textual hash id's can be cached
4243                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4244                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4245                         $expires = '+1d';
4246                 }
4247
4248                 # open patch output
4249                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4250                         '-p', ($format eq 'html' ? "--full-index" : ()),
4251                         $hash_parent_base, $hash_base,
4252                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4253                         or die_error(undef, "Open git-diff-tree failed");
4254         }
4255
4256         # old/legacy style URI
4257         if (!%diffinfo && # if new style URI failed
4258             defined $hash && defined $hash_parent) {
4259                 # fake git-diff-tree raw output
4260                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4261                 $diffinfo{'from_id'} = $hash_parent;
4262                 $diffinfo{'to_id'}   = $hash;
4263                 if (defined $file_name) {
4264                         if (defined $file_parent) {
4265                                 $diffinfo{'status'} = '2';
4266                                 $diffinfo{'from_file'} = $file_parent;
4267                                 $diffinfo{'to_file'}   = $file_name;
4268                         } else { # assume not renamed
4269                                 $diffinfo{'status'} = '1';
4270                                 $diffinfo{'from_file'} = $file_name;
4271                                 $diffinfo{'to_file'}   = $file_name;
4272                         }
4273                 } else { # no filename given
4274                         $diffinfo{'status'} = '2';
4275                         $diffinfo{'from_file'} = $hash_parent;
4276                         $diffinfo{'to_file'}   = $hash;
4277                 }
4278
4279                 # non-textual hash id's can be cached
4280                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4281                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4282                         $expires = '+1d';
4283                 }
4284
4285                 # open patch output
4286                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4287                         '-p', ($format eq 'html' ? "--full-index" : ()),
4288                         $hash_parent, $hash, "--"
4289                         or die_error(undef, "Open git-diff failed");
4290         } else  {
4291                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4292                         unless %diffinfo;
4293         }
4294
4295         # header
4296         if ($format eq 'html') {
4297                 my $formats_nav =
4298                         $cgi->a({-href => href(action=>"blobdiff_plain",
4299                                                hash=>$hash, hash_parent=>$hash_parent,
4300                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4301                                                file_name=>$file_name, file_parent=>$file_parent)},
4302                                 "raw");
4303                 git_header_html(undef, $expires);
4304                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4305                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4306                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4307                 } else {
4308                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4309                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4310                 }
4311                 if (defined $file_name) {
4312                         git_print_page_path($file_name, "blob", $hash_base);
4313                 } else {
4314                         print "<div class=\"page_path\"></div>\n";
4315                 }
4316
4317         } elsif ($format eq 'plain') {
4318                 print $cgi->header(
4319                         -type => 'text/plain',
4320                         -charset => 'utf-8',
4321                         -expires => $expires,
4322                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4323
4324                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4325
4326         } else {
4327                 die_error(undef, "Unknown blobdiff format");
4328         }
4329
4330         # patch
4331         if ($format eq 'html') {
4332                 print "<div class=\"page_body\">\n";
4333
4334                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4335                 close $fd;
4336
4337                 print "</div>\n"; # class="page_body"
4338                 git_footer_html();
4339
4340         } else {
4341                 while (my $line = <$fd>) {
4342                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4343                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4344
4345                         print $line;
4346
4347                         last if $line =~ m!^\+\+\+!;
4348                 }
4349                 local $/ = undef;
4350                 print <$fd>;
4351                 close $fd;
4352         }
4353 }
4354
4355 sub git_blobdiff_plain {
4356         git_blobdiff('plain');
4357 }
4358
4359 sub git_commitdiff {
4360         my $format = shift || 'html';
4361         $hash ||= $hash_base || "HEAD";
4362         my %co = parse_commit($hash);
4363         if (!%co) {
4364                 die_error(undef, "Unknown commit object");
4365         }
4366
4367         # we need to prepare $formats_nav before any parameter munging
4368         my $formats_nav;
4369         if ($format eq 'html') {
4370                 $formats_nav =
4371                         $cgi->a({-href => href(action=>"commitdiff_plain",
4372                                                hash=>$hash, hash_parent=>$hash_parent)},
4373                                 "raw");
4374
4375                 if (defined $hash_parent) {
4376                         # commitdiff with two commits given
4377                         my $hash_parent_short = $hash_parent;
4378                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4379                                 $hash_parent_short = substr($hash_parent, 0, 7);
4380                         }
4381                         $formats_nav .=
4382                                 ' (from: ' .
4383                                 $cgi->a({-href => href(action=>"commitdiff",
4384                                                        hash=>$hash_parent)},
4385                                         esc_html($hash_parent_short)) .
4386                                 ')';
4387                 } elsif (!$co{'parent'}) {
4388                         # --root commitdiff
4389                         $formats_nav .= ' (initial)';
4390                 } elsif (scalar @{$co{'parents'}} == 1) {
4391                         # single parent commit
4392                         $formats_nav .=
4393                                 ' (parent: ' .
4394                                 $cgi->a({-href => href(action=>"commitdiff",
4395                                                        hash=>$co{'parent'})},
4396                                         esc_html(substr($co{'parent'}, 0, 7))) .
4397                                 ')';
4398                 } else {
4399                         # merge commit
4400                         $formats_nav .=
4401                                 ' (merge: ' .
4402                                 join(' ', map {
4403                                         $cgi->a({-href => href(action=>"commitdiff",
4404                                                                hash=>$_)},
4405                                                 esc_html(substr($_, 0, 7)));
4406                                 } @{$co{'parents'}} ) .
4407                                 ')';
4408                 }
4409         }
4410
4411         my $hash_parent_param = $hash_parent;
4412         if (!defined $hash_parent) {
4413                 $hash_parent_param =
4414                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4415         }
4416
4417         # read commitdiff
4418         my $fd;
4419         my @difftree;
4420         if ($format eq 'html') {
4421                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4422                         "--no-commit-id", "--patch-with-raw", "--full-index",
4423                         $hash_parent_param, $hash, "--"
4424                         or die_error(undef, "Open git-diff-tree failed");
4425
4426                 while (my $line = <$fd>) {
4427                         chomp $line;
4428                         # empty line ends raw part of diff-tree output
4429                         last unless $line;
4430                         push @difftree, scalar parse_difftree_raw_line($line);
4431                 }
4432
4433         } elsif ($format eq 'plain') {
4434                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4435                         '-p', $hash_parent_param, $hash, "--"
4436                         or die_error(undef, "Open git-diff-tree failed");
4437
4438         } else {
4439                 die_error(undef, "Unknown commitdiff format");
4440         }
4441
4442         # non-textual hash id's can be cached
4443         my $expires;
4444         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4445                 $expires = "+1d";
4446         }
4447
4448         # write commit message
4449         if ($format eq 'html') {
4450                 my $refs = git_get_references();
4451                 my $ref = format_ref_marker($refs, $co{'id'});
4452
4453                 git_header_html(undef, $expires);
4454                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4455                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4456                 git_print_authorship(\%co);
4457                 print "<div class=\"page_body\">\n";
4458                 if (@{$co{'comment'}} > 1) {
4459                         print "<div class=\"log\">\n";
4460                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4461                         print "</div>\n"; # class="log"
4462                 }
4463
4464         } elsif ($format eq 'plain') {
4465                 my $refs = git_get_references("tags");
4466                 my $tagname = git_get_rev_name_tags($hash);
4467                 my $filename = basename($project) . "-$hash.patch";
4468
4469                 print $cgi->header(
4470                         -type => 'text/plain',
4471                         -charset => 'utf-8',
4472                         -expires => $expires,
4473                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4474                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4475                 print <<TEXT;
4476 From: $co{'author'}
4477 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4478 Subject: $co{'title'}
4479 TEXT
4480                 print "X-Git-Tag: $tagname\n" if $tagname;
4481                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4482
4483                 foreach my $line (@{$co{'comment'}}) {
4484                         print "$line\n";
4485                 }
4486                 print "---\n\n";
4487         }
4488
4489         # write patch
4490         if ($format eq 'html') {
4491                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4492                 print "<br/>\n";
4493
4494                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4495                 close $fd;
4496                 print "</div>\n"; # class="page_body"
4497                 git_footer_html();
4498
4499         } elsif ($format eq 'plain') {
4500                 local $/ = undef;
4501                 print <$fd>;
4502                 close $fd
4503                         or print "Reading git-diff-tree failed\n";
4504         }
4505 }
4506
4507 sub git_commitdiff_plain {
4508         git_commitdiff('plain');
4509 }
4510
4511 sub git_history {
4512         if (!defined $hash_base) {
4513                 $hash_base = git_get_head_hash($project);
4514         }
4515         if (!defined $page) {
4516                 $page = 0;
4517         }
4518         my $ftype;
4519         my %co = parse_commit($hash_base);
4520         if (!%co) {
4521                 die_error(undef, "Unknown commit object");
4522         }
4523
4524         my $refs = git_get_references();
4525         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4526
4527         if (!defined $hash && defined $file_name) {
4528                 $hash = git_get_hash_by_path($hash_base, $file_name);
4529         }
4530         if (defined $hash) {
4531                 $ftype = git_get_type($hash);
4532         }
4533
4534         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4535
4536         my $paging_nav = '';
4537         if ($page > 0) {
4538                 $paging_nav .=
4539                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4540                                                file_name=>$file_name)},
4541                                 "first");
4542                 $paging_nav .= " &sdot; " .
4543                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4544                                                file_name=>$file_name, page=>$page-1),
4545                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4546         } else {
4547                 $paging_nav .= "first";
4548                 $paging_nav .= " &sdot; prev";
4549         }
4550         if ($#commitlist >= 100) {
4551                 $paging_nav .= " &sdot; " .
4552                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4553                                                file_name=>$file_name, page=>$page+1),
4554                                  -accesskey => "n", -title => "Alt-n"}, "next");
4555         } else {
4556                 $paging_nav .= " &sdot; next";
4557         }
4558         my $next_link = '';
4559         if ($#commitlist >= 100) {
4560                 $next_link =
4561                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4562                                                file_name=>$file_name, page=>$page+1),
4563                                  -accesskey => "n", -title => "Alt-n"}, "next");
4564         }
4565
4566         git_header_html();
4567         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4568         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4569         git_print_page_path($file_name, $ftype, $hash_base);
4570
4571         git_history_body(\@commitlist, 0, 99,
4572                          $refs, $hash_base, $ftype, $next_link);
4573
4574         git_footer_html();
4575 }
4576
4577 sub git_search {
4578         my ($have_search) = gitweb_check_feature('search');
4579         if (!$have_search) {
4580                 die_error('403 Permission denied', "Permission denied");
4581         }
4582         if (!defined $searchtext) {
4583                 die_error(undef, "Text field empty");
4584         }
4585         if (!defined $hash) {
4586                 $hash = git_get_head_hash($project);
4587         }
4588         my %co = parse_commit($hash);
4589         if (!%co) {
4590                 die_error(undef, "Unknown commit object");
4591         }
4592         if (!defined $page) {
4593                 $page = 0;
4594         }
4595
4596         $searchtype ||= 'commit';
4597         if ($searchtype eq 'pickaxe') {
4598                 # pickaxe may take all resources of your box and run for several minutes
4599                 # with every query - so decide by yourself how public you make this feature
4600                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4601                 if (!$have_pickaxe) {
4602                         die_error('403 Permission denied', "Permission denied");
4603                 }
4604         }
4605
4606         git_header_html();
4607
4608         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4609                 my $greptype;
4610                 if ($searchtype eq 'commit') {
4611                         $greptype = "--grep=";
4612                 } elsif ($searchtype eq 'author') {
4613                         $greptype = "--author=";
4614                 } elsif ($searchtype eq 'committer') {
4615                         $greptype = "--committer=";
4616                 }
4617                 $greptype .= $searchtext;
4618                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4619
4620                 my $paging_nav = '';
4621                 if ($page > 0) {
4622                         $paging_nav .=
4623                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4624                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4625                                         "first");
4626                         $paging_nav .= " &sdot; " .
4627                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4628                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4629                                                        page=>$page-1),
4630                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4631                 } else {
4632                         $paging_nav .= "first";
4633                         $paging_nav .= " &sdot; prev";
4634                 }
4635                 if ($#commitlist >= 100) {
4636                         $paging_nav .= " &sdot; " .
4637                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4638                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4639                                                        page=>$page+1),
4640                                          -accesskey => "n", -title => "Alt-n"}, "next");
4641                 } else {
4642                         $paging_nav .= " &sdot; next";
4643                 }
4644                 my $next_link = '';
4645                 if ($#commitlist >= 100) {
4646                         $next_link =
4647                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4648                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4649                                                        page=>$page+1),
4650                                          -accesskey => "n", -title => "Alt-n"}, "next");
4651                 }
4652
4653                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4654                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4655                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4656         }
4657
4658         if ($searchtype eq 'pickaxe') {
4659                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4660                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4661
4662                 print "<table cellspacing=\"0\">\n";
4663                 my $alternate = 1;
4664                 $/ = "\n";
4665                 my $git_command = git_cmd_str();
4666                 open my $fd, "-|", "$git_command rev-list $hash | " .
4667                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4668                 undef %co;
4669                 my @files;
4670                 while (my $line = <$fd>) {
4671                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4672                                 my %set;
4673                                 $set{'file'} = $6;
4674                                 $set{'from_id'} = $3;
4675                                 $set{'to_id'} = $4;
4676                                 $set{'id'} = $set{'to_id'};
4677                                 if ($set{'id'} =~ m/0{40}/) {
4678                                         $set{'id'} = $set{'from_id'};
4679                                 }
4680                                 if ($set{'id'} =~ m/0{40}/) {
4681                                         next;
4682                                 }
4683                                 push @files, \%set;
4684                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4685                                 if (%co) {
4686                                         if ($alternate) {
4687                                                 print "<tr class=\"dark\">\n";
4688                                         } else {
4689                                                 print "<tr class=\"light\">\n";
4690                                         }
4691                                         $alternate ^= 1;
4692                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4693                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4694                                               "<td>" .
4695                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4696                                                       -class => "list subject"},
4697                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4698                                         while (my $setref = shift @files) {
4699                                                 my %set = %$setref;
4700                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4701                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4702                                                               -class => "list"},
4703                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4704                                                       "<br/>\n";
4705                                         }
4706                                         print "</td>\n" .
4707                                               "<td class=\"link\">" .
4708                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4709                                               " | " .
4710                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4711                                         print "</td>\n" .
4712                                               "</tr>\n";
4713                                 }
4714                                 %co = parse_commit($1);
4715                         }
4716                 }
4717                 close $fd;
4718
4719                 print "</table>\n";
4720         }
4721         git_footer_html();
4722 }
4723
4724 sub git_search_help {
4725         git_header_html();
4726         git_print_page_nav('','', $hash,$hash,$hash);
4727         print <<EOT;
4728 <dl>
4729 <dt><b>commit</b></dt>
4730 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4731 <dt><b>author</b></dt>
4732 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4733 <dt><b>committer</b></dt>
4734 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4735 EOT
4736         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4737         if ($have_pickaxe) {
4738                 print <<EOT;
4739 <dt><b>pickaxe</b></dt>
4740 <dd>All commits that caused the string to appear or disappear from any file (changes that
4741 added, removed or "modified" the string) will be listed. This search can take a while and
4742 takes a lot of strain on the server, so please use it wisely.</dd>
4743 EOT
4744         }
4745         print "</dl>\n";
4746         git_footer_html();
4747 }
4748
4749 sub git_shortlog {
4750         my $head = git_get_head_hash($project);
4751         if (!defined $hash) {
4752                 $hash = $head;
4753         }
4754         if (!defined $page) {
4755                 $page = 0;
4756         }
4757         my $refs = git_get_references();
4758
4759         my @commitlist = parse_commits($hash, 101, (100 * $page));
4760
4761         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4762         my $next_link = '';
4763         if ($#commitlist >= 100) {
4764                 $next_link =
4765                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4766                                  -accesskey => "n", -title => "Alt-n"}, "next");
4767         }
4768
4769         git_header_html();
4770         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4771         git_print_header_div('summary', $project);
4772
4773         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4774
4775         git_footer_html();
4776 }
4777
4778 ## ......................................................................
4779 ## feeds (RSS, Atom; OPML)
4780
4781 sub git_feed {
4782         my $format = shift || 'atom';
4783         my ($have_blame) = gitweb_check_feature('blame');
4784
4785         # Atom: http://www.atomenabled.org/developers/syndication/
4786         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4787         if ($format ne 'rss' && $format ne 'atom') {
4788                 die_error(undef, "Unknown web feed format");
4789         }
4790
4791         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4792         my $head = $hash || 'HEAD';
4793         my @commitlist = parse_commits($head, 150);
4794
4795         my %latest_commit;
4796         my %latest_date;
4797         my $content_type = "application/$format+xml";
4798         if (defined $cgi->http('HTTP_ACCEPT') &&
4799                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4800                 # browser (feed reader) prefers text/xml
4801                 $content_type = 'text/xml';
4802         }
4803         if (defined($commitlist[0])) {
4804                 %latest_commit = %{$commitlist[0]};
4805                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4806                 print $cgi->header(
4807                         -type => $content_type,
4808                         -charset => 'utf-8',
4809                         -last_modified => $latest_date{'rfc2822'});
4810         } else {
4811                 print $cgi->header(
4812                         -type => $content_type,
4813                         -charset => 'utf-8');
4814         }
4815
4816         # Optimization: skip generating the body if client asks only
4817         # for Last-Modified date.
4818         return if ($cgi->request_method() eq 'HEAD');
4819
4820         # header variables
4821         my $title = "$site_name - $project/$action";
4822         my $feed_type = 'log';
4823         if (defined $hash) {
4824                 $title .= " - '$hash'";
4825                 $feed_type = 'branch log';
4826                 if (defined $file_name) {
4827                         $title .= " :: $file_name";
4828                         $feed_type = 'history';
4829                 }
4830         } elsif (defined $file_name) {
4831                 $title .= " - $file_name";
4832                 $feed_type = 'history';
4833         }
4834         $title .= " $feed_type";
4835         my $descr = git_get_project_description($project);
4836         if (defined $descr) {
4837                 $descr = esc_html($descr);
4838         } else {
4839                 $descr = "$project " .
4840                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4841                          " feed";
4842         }
4843         my $owner = git_get_project_owner($project);
4844         $owner = esc_html($owner);
4845
4846         #header
4847         my $alt_url;
4848         if (defined $file_name) {
4849                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4850         } elsif (defined $hash) {
4851                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4852         } else {
4853                 $alt_url = href(-full=>1, action=>"summary");
4854         }
4855         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4856         if ($format eq 'rss') {
4857                 print <<XML;
4858 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4859 <channel>
4860 XML
4861                 print "<title>$title</title>\n" .
4862                       "<link>$alt_url</link>\n" .
4863                       "<description>$descr</description>\n" .
4864                       "<language>en</language>\n";
4865         } elsif ($format eq 'atom') {
4866                 print <<XML;
4867 <feed xmlns="http://www.w3.org/2005/Atom">
4868 XML
4869                 print "<title>$title</title>\n" .
4870                       "<subtitle>$descr</subtitle>\n" .
4871                       '<link rel="alternate" type="text/html" href="' .
4872                       $alt_url . '" />' . "\n" .
4873                       '<link rel="self" type="' . $content_type . '" href="' .
4874                       $cgi->self_url() . '" />' . "\n" .
4875                       "<id>" . href(-full=>1) . "</id>\n" .
4876                       # use project owner for feed author
4877                       "<author><name>$owner</name></author>\n";
4878                 if (defined $favicon) {
4879                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4880                 }
4881                 if (defined $logo_url) {
4882                         # not twice as wide as tall: 72 x 27 pixels
4883                         print "<logo>" . esc_url($logo) . "</logo>\n";
4884                 }
4885                 if (! %latest_date) {
4886                         # dummy date to keep the feed valid until commits trickle in:
4887                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4888                 } else {
4889                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4890                 }
4891         }
4892
4893         # contents
4894         for (my $i = 0; $i <= $#commitlist; $i++) {
4895                 my %co = %{$commitlist[$i]};
4896                 my $commit = $co{'id'};
4897                 # we read 150, we always show 30 and the ones more recent than 48 hours
4898                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4899                         last;
4900                 }
4901                 my %cd = parse_date($co{'author_epoch'});
4902
4903                 # get list of changed files
4904                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4905                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4906                         or next;
4907                 my @difftree = map { chomp; $_ } <$fd>;
4908                 close $fd
4909                         or next;
4910
4911                 # print element (entry, item)
4912                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4913                 if ($format eq 'rss') {
4914                         print "<item>\n" .
4915                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4916                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4917                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4918                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4919                               "<link>$co_url</link>\n" .
4920                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4921                               "<content:encoded>" .
4922                               "<![CDATA[\n";
4923                 } elsif ($format eq 'atom') {
4924                         print "<entry>\n" .
4925                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4926                               "<updated>$cd{'iso-8601'}</updated>\n" .
4927                               "<author>\n" .
4928                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4929                         if ($co{'author_email'}) {
4930                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4931                         }
4932                         print "</author>\n" .
4933                               # use committer for contributor
4934                               "<contributor>\n" .
4935                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4936                         if ($co{'committer_email'}) {
4937                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4938                         }
4939                         print "</contributor>\n" .
4940                               "<published>$cd{'iso-8601'}</published>\n" .
4941                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4942                               "<id>$co_url</id>\n" .
4943                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4944                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4945                 }
4946                 my $comment = $co{'comment'};
4947                 print "<pre>\n";
4948                 foreach my $line (@$comment) {
4949                         $line = esc_html($line);
4950                         print "$line\n";
4951                 }
4952                 print "</pre><ul>\n";
4953                 foreach my $difftree_line (@difftree) {
4954                         my %difftree = parse_difftree_raw_line($difftree_line);
4955                         next if !$difftree{'from_id'};
4956
4957                         my $file = $difftree{'file'} || $difftree{'to_file'};
4958
4959                         print "<li>" .
4960                               "[" .
4961                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4962                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4963                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4964                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4965                                       -title => "diff"}, 'D');
4966                         if ($have_blame) {
4967                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4968                                                              file_name=>$file, hash_base=>$commit),
4969                                               -title => "blame"}, 'B');
4970                         }
4971                         # if this is not a feed of a file history
4972                         if (!defined $file_name || $file_name ne $file) {
4973                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4974                                                              file_name=>$file, hash=>$commit),
4975                                               -title => "history"}, 'H');
4976                         }
4977                         $file = esc_path($file);
4978                         print "] ".
4979                               "$file</li>\n";
4980                 }
4981                 if ($format eq 'rss') {
4982                         print "</ul>]]>\n" .
4983                               "</content:encoded>\n" .
4984                               "</item>\n";
4985                 } elsif ($format eq 'atom') {
4986                         print "</ul>\n</div>\n" .
4987                               "</content>\n" .
4988                               "</entry>\n";
4989                 }
4990         }
4991
4992         # end of feed
4993         if ($format eq 'rss') {
4994                 print "</channel>\n</rss>\n";
4995         }       elsif ($format eq 'atom') {
4996                 print "</feed>\n";
4997         }
4998 }
4999
5000 sub git_rss {
5001         git_feed('rss');
5002 }
5003
5004 sub git_atom {
5005         git_feed('atom');
5006 }
5007
5008 sub git_opml {
5009         my @list = git_get_projects_list();
5010
5011         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5012         print <<XML;
5013 <?xml version="1.0" encoding="utf-8"?>
5014 <opml version="1.0">
5015 <head>
5016   <title>$site_name OPML Export</title>
5017 </head>
5018 <body>
5019 <outline text="git RSS feeds">
5020 XML
5021
5022         foreach my $pr (@list) {
5023                 my %proj = %$pr;
5024                 my $head = git_get_head_hash($proj{'path'});
5025                 if (!defined $head) {
5026                         next;
5027                 }
5028                 $git_dir = "$projectroot/$proj{'path'}";
5029                 my %co = parse_commit($head);
5030                 if (!%co) {
5031                         next;
5032                 }
5033
5034                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5035                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5036                 my $html = "$my_url?p=$proj{'path'};a=summary";
5037                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5038         }
5039         print <<XML;
5040 </outline>
5041 </body>
5042 </opml>
5043 XML
5044 }