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         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1064         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1065         if (defined $type && $type ne $2) {
1066                 # type doesn't match
1067                 return undef;
1068         }
1069         return $3;
1070 }
1071
1072 # get path of entry with given hash at given tree-ish (ref)
1073 # used to get 'from' filename for combined diff (merge commit) for renames
1074 sub git_get_path_by_hash {
1075         my $base = shift || return;
1076         my $hash = shift || return;
1077
1078         local $/ = "\0";
1079
1080         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1081                 or return undef;
1082         while (my $line = <$fd>) {
1083                 chomp $line;
1084
1085                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1086                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1087                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1088                         close $fd;
1089                         return $1;
1090                 }
1091         }
1092         close $fd;
1093         return undef;
1094 }
1095
1096 ## ......................................................................
1097 ## git utility functions, directly accessing git repository
1098
1099 sub git_get_project_description {
1100         my $path = shift;
1101
1102         open my $fd, "$projectroot/$path/description" or return undef;
1103         my $descr = <$fd>;
1104         close $fd;
1105         chomp $descr;
1106         return $descr;
1107 }
1108
1109 sub git_get_project_url_list {
1110         my $path = shift;
1111
1112         open my $fd, "$projectroot/$path/cloneurl" or return;
1113         my @git_project_url_list = map { chomp; $_ } <$fd>;
1114         close $fd;
1115
1116         return wantarray ? @git_project_url_list : \@git_project_url_list;
1117 }
1118
1119 sub git_get_projects_list {
1120         my ($filter) = @_;
1121         my @list;
1122
1123         $filter ||= '';
1124         $filter =~ s/\.git$//;
1125
1126         my ($check_forks) = gitweb_check_feature('forks');
1127
1128         if (-d $projects_list) {
1129                 # search in directory
1130                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1131                 # remove the trailing "/"
1132                 $dir =~ s!/+$!!;
1133                 my $pfxlen = length("$dir");
1134
1135                 File::Find::find({
1136                         follow_fast => 1, # follow symbolic links
1137                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1138                         wanted => sub {
1139                                 # skip project-list toplevel, if we get it.
1140                                 return if (m!^[/.]$!);
1141                                 # only directories can be git repositories
1142                                 return unless (-d $_);
1143
1144                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1145                                 # we check related file in $projectroot
1146                                 if ($check_forks and $subdir =~ m#/.#) {
1147                                         $File::Find::prune = 1;
1148                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1149                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1150                                         $File::Find::prune = 1;
1151                                 }
1152                         },
1153                 }, "$dir");
1154
1155         } elsif (-f $projects_list) {
1156                 # read from file(url-encoded):
1157                 # 'git%2Fgit.git Linus+Torvalds'
1158                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1159                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1160                 my %paths;
1161                 open my ($fd), $projects_list or return;
1162         PROJECT:
1163                 while (my $line = <$fd>) {
1164                         chomp $line;
1165                         my ($path, $owner) = split ' ', $line;
1166                         $path = unescape($path);
1167                         $owner = unescape($owner);
1168                         if (!defined $path) {
1169                                 next;
1170                         }
1171                         if ($filter ne '') {
1172                                 # looking for forks;
1173                                 my $pfx = substr($path, 0, length($filter));
1174                                 if ($pfx ne $filter) {
1175                                         next PROJECT;
1176                                 }
1177                                 my $sfx = substr($path, length($filter));
1178                                 if ($sfx !~ /^\/.*\.git$/) {
1179                                         next PROJECT;
1180                                 }
1181                         } elsif ($check_forks) {
1182                         PATH:
1183                                 foreach my $filter (keys %paths) {
1184                                         # looking for forks;
1185                                         my $pfx = substr($path, 0, length($filter));
1186                                         if ($pfx ne $filter) {
1187                                                 next PATH;
1188                                         }
1189                                         my $sfx = substr($path, length($filter));
1190                                         if ($sfx !~ /^\/.*\.git$/) {
1191                                                 next PATH;
1192                                         }
1193                                         # is a fork, don't include it in
1194                                         # the list
1195                                         next PROJECT;
1196                                 }
1197                         }
1198                         if (check_export_ok("$projectroot/$path")) {
1199                                 my $pr = {
1200                                         path => $path,
1201                                         owner => decode_utf8($owner),
1202                                 };
1203                                 push @list, $pr;
1204                                 (my $forks_path = $path) =~ s/\.git$//;
1205                                 $paths{$forks_path}++;
1206                         }
1207                 }
1208                 close $fd;
1209         }
1210         return @list;
1211 }
1212
1213 sub git_get_project_owner {
1214         my $project = shift;
1215         my $owner;
1216
1217         return undef unless $project;
1218
1219         # read from file (url-encoded):
1220         # 'git%2Fgit.git Linus+Torvalds'
1221         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1222         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1223         if (-f $projects_list) {
1224                 open (my $fd , $projects_list);
1225                 while (my $line = <$fd>) {
1226                         chomp $line;
1227                         my ($pr, $ow) = split ' ', $line;
1228                         $pr = unescape($pr);
1229                         $ow = unescape($ow);
1230                         if ($pr eq $project) {
1231                                 $owner = decode_utf8($ow);
1232                                 last;
1233                         }
1234                 }
1235                 close $fd;
1236         }
1237         if (!defined $owner) {
1238                 $owner = get_file_owner("$projectroot/$project");
1239         }
1240
1241         return $owner;
1242 }
1243
1244 sub git_get_last_activity {
1245         my ($path) = @_;
1246         my $fd;
1247
1248         $git_dir = "$projectroot/$path";
1249         open($fd, "-|", git_cmd(), 'for-each-ref',
1250              '--format=%(committer)',
1251              '--sort=-committerdate',
1252              '--count=1',
1253              'refs/heads') or return;
1254         my $most_recent = <$fd>;
1255         close $fd or return;
1256         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1257                 my $timestamp = $1;
1258                 my $age = time - $timestamp;
1259                 return ($age, age_string($age));
1260         }
1261 }
1262
1263 sub git_get_references {
1264         my $type = shift || "";
1265         my %refs;
1266         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1267         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1268         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1269                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1270                 or return;
1271
1272         while (my $line = <$fd>) {
1273                 chomp $line;
1274                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1275                         if (defined $refs{$1}) {
1276                                 push @{$refs{$1}}, $2;
1277                         } else {
1278                                 $refs{$1} = [ $2 ];
1279                         }
1280                 }
1281         }
1282         close $fd or return;
1283         return \%refs;
1284 }
1285
1286 sub git_get_rev_name_tags {
1287         my $hash = shift || return undef;
1288
1289         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1290                 or return;
1291         my $name_rev = <$fd>;
1292         close $fd;
1293
1294         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1295                 return $1;
1296         } else {
1297                 # catches also '$hash undefined' output
1298                 return undef;
1299         }
1300 }
1301
1302 ## ----------------------------------------------------------------------
1303 ## parse to hash functions
1304
1305 sub parse_date {
1306         my $epoch = shift;
1307         my $tz = shift || "-0000";
1308
1309         my %date;
1310         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1311         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1312         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1313         $date{'hour'} = $hour;
1314         $date{'minute'} = $min;
1315         $date{'mday'} = $mday;
1316         $date{'day'} = $days[$wday];
1317         $date{'month'} = $months[$mon];
1318         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1319                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1320         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1321                              $mday, $months[$mon], $hour ,$min;
1322         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1323                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1324
1325         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1326         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1327         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1328         $date{'hour_local'} = $hour;
1329         $date{'minute_local'} = $min;
1330         $date{'tz_local'} = $tz;
1331         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1332                                   1900+$year, $mon+1, $mday,
1333                                   $hour, $min, $sec, $tz);
1334         return %date;
1335 }
1336
1337 sub parse_tag {
1338         my $tag_id = shift;
1339         my %tag;
1340         my @comment;
1341
1342         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1343         $tag{'id'} = $tag_id;
1344         while (my $line = <$fd>) {
1345                 chomp $line;
1346                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1347                         $tag{'object'} = $1;
1348                 } elsif ($line =~ m/^type (.+)$/) {
1349                         $tag{'type'} = $1;
1350                 } elsif ($line =~ m/^tag (.+)$/) {
1351                         $tag{'name'} = $1;
1352                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1353                         $tag{'author'} = $1;
1354                         $tag{'epoch'} = $2;
1355                         $tag{'tz'} = $3;
1356                 } elsif ($line =~ m/--BEGIN/) {
1357                         push @comment, $line;
1358                         last;
1359                 } elsif ($line eq "") {
1360                         last;
1361                 }
1362         }
1363         push @comment, <$fd>;
1364         $tag{'comment'} = \@comment;
1365         close $fd or return;
1366         if (!defined $tag{'name'}) {
1367                 return
1368         };
1369         return %tag
1370 }
1371
1372 sub parse_commit_text {
1373         my ($commit_text, $withparents) = @_;
1374         my @commit_lines = split '\n', $commit_text;
1375         my %co;
1376
1377         pop @commit_lines; # Remove '\0'
1378
1379         my $header = shift @commit_lines;
1380         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1381                 return;
1382         }
1383         ($co{'id'}, my @parents) = split ' ', $header;
1384         while (my $line = shift @commit_lines) {
1385                 last if $line eq "\n";
1386                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1387                         $co{'tree'} = $1;
1388                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1389                         push @parents, $1;
1390                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1391                         $co{'author'} = $1;
1392                         $co{'author_epoch'} = $2;
1393                         $co{'author_tz'} = $3;
1394                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1395                                 $co{'author_name'}  = $1;
1396                                 $co{'author_email'} = $2;
1397                         } else {
1398                                 $co{'author_name'} = $co{'author'};
1399                         }
1400                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1401                         $co{'committer'} = $1;
1402                         $co{'committer_epoch'} = $2;
1403                         $co{'committer_tz'} = $3;
1404                         $co{'committer_name'} = $co{'committer'};
1405                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1406                                 $co{'committer_name'}  = $1;
1407                                 $co{'committer_email'} = $2;
1408                         } else {
1409                                 $co{'committer_name'} = $co{'committer'};
1410                         }
1411                 }
1412         }
1413         if (!defined $co{'tree'}) {
1414                 return;
1415         };
1416         $co{'parents'} = \@parents;
1417         $co{'parent'} = $parents[0];
1418
1419         foreach my $title (@commit_lines) {
1420                 $title =~ s/^    //;
1421                 if ($title ne "") {
1422                         $co{'title'} = chop_str($title, 80, 5);
1423                         # remove leading stuff of merges to make the interesting part visible
1424                         if (length($title) > 50) {
1425                                 $title =~ s/^Automatic //;
1426                                 $title =~ s/^merge (of|with) /Merge ... /i;
1427                                 if (length($title) > 50) {
1428                                         $title =~ s/(http|rsync):\/\///;
1429                                 }
1430                                 if (length($title) > 50) {
1431                                         $title =~ s/(master|www|rsync)\.//;
1432                                 }
1433                                 if (length($title) > 50) {
1434                                         $title =~ s/kernel.org:?//;
1435                                 }
1436                                 if (length($title) > 50) {
1437                                         $title =~ s/\/pub\/scm//;
1438                                 }
1439                         }
1440                         $co{'title_short'} = chop_str($title, 50, 5);
1441                         last;
1442                 }
1443         }
1444         if ($co{'title'} eq "") {
1445                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1446         }
1447         # remove added spaces
1448         foreach my $line (@commit_lines) {
1449                 $line =~ s/^    //;
1450         }
1451         $co{'comment'} = \@commit_lines;
1452
1453         my $age = time - $co{'committer_epoch'};
1454         $co{'age'} = $age;
1455         $co{'age_string'} = age_string($age);
1456         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1457         if ($age > 60*60*24*7*2) {
1458                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1459                 $co{'age_string_age'} = $co{'age_string'};
1460         } else {
1461                 $co{'age_string_date'} = $co{'age_string'};
1462                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1463         }
1464         return %co;
1465 }
1466
1467 sub parse_commit {
1468         my ($commit_id) = @_;
1469         my %co;
1470
1471         local $/ = "\0";
1472
1473         open my $fd, "-|", git_cmd(), "rev-list",
1474                 "--parents",
1475                 "--header",
1476                 "--max-count=1",
1477                 $commit_id,
1478                 "--",
1479                 or die_error(undef, "Open git-rev-list failed");
1480         %co = parse_commit_text(<$fd>, 1);
1481         close $fd;
1482
1483         return %co;
1484 }
1485
1486 sub parse_commits {
1487         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1488         my @cos;
1489
1490         $maxcount ||= 1;
1491         $skip ||= 0;
1492
1493         local $/ = "\0";
1494
1495         open my $fd, "-|", git_cmd(), "rev-list",
1496                 "--header",
1497                 ($arg ? ($arg) : ()),
1498                 ("--max-count=" . $maxcount),
1499                 ("--skip=" . $skip),
1500                 $commit_id,
1501                 "--",
1502                 ($filename ? ($filename) : ())
1503                 or die_error(undef, "Open git-rev-list failed");
1504         while (my $line = <$fd>) {
1505                 my %co = parse_commit_text($line);
1506                 push @cos, \%co;
1507         }
1508         close $fd;
1509
1510         return wantarray ? @cos : \@cos;
1511 }
1512
1513 # parse ref from ref_file, given by ref_id, with given type
1514 sub parse_ref {
1515         my $ref_file = shift;
1516         my $ref_id = shift;
1517         my $type = shift || git_get_type($ref_id);
1518         my %ref_item;
1519
1520         $ref_item{'type'} = $type;
1521         $ref_item{'id'} = $ref_id;
1522         $ref_item{'epoch'} = 0;
1523         $ref_item{'age'} = "unknown";
1524         if ($type eq "tag") {
1525                 my %tag = parse_tag($ref_id);
1526                 $ref_item{'comment'} = $tag{'comment'};
1527                 if ($tag{'type'} eq "commit") {
1528                         my %co = parse_commit($tag{'object'});
1529                         $ref_item{'epoch'} = $co{'committer_epoch'};
1530                         $ref_item{'age'} = $co{'age_string'};
1531                 } elsif (defined($tag{'epoch'})) {
1532                         my $age = time - $tag{'epoch'};
1533                         $ref_item{'epoch'} = $tag{'epoch'};
1534                         $ref_item{'age'} = age_string($age);
1535                 }
1536                 $ref_item{'reftype'} = $tag{'type'};
1537                 $ref_item{'name'} = $tag{'name'};
1538                 $ref_item{'refid'} = $tag{'object'};
1539         } elsif ($type eq "commit"){
1540                 my %co = parse_commit($ref_id);
1541                 $ref_item{'reftype'} = "commit";
1542                 $ref_item{'name'} = $ref_file;
1543                 $ref_item{'title'} = $co{'title'};
1544                 $ref_item{'refid'} = $ref_id;
1545                 $ref_item{'epoch'} = $co{'committer_epoch'};
1546                 $ref_item{'age'} = $co{'age_string'};
1547         } else {
1548                 $ref_item{'reftype'} = $type;
1549                 $ref_item{'name'} = $ref_file;
1550                 $ref_item{'refid'} = $ref_id;
1551         }
1552
1553         return %ref_item;
1554 }
1555
1556 # parse line of git-diff-tree "raw" output
1557 sub parse_difftree_raw_line {
1558         my $line = shift;
1559         my %res;
1560
1561         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1562         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1563         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1564                 $res{'from_mode'} = $1;
1565                 $res{'to_mode'} = $2;
1566                 $res{'from_id'} = $3;
1567                 $res{'to_id'} = $4;
1568                 $res{'status'} = $5;
1569                 $res{'similarity'} = $6;
1570                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1571                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1572                 } else {
1573                         $res{'file'} = unquote($7);
1574                 }
1575         }
1576         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1577         # combined diff (for merge commit)
1578         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1579                 $res{'nparents'}  = length($1);
1580                 $res{'from_mode'} = [ split(' ', $2) ];
1581                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1582                 $res{'from_id'} = [ split(' ', $3) ];
1583                 $res{'to_id'} = pop @{$res{'from_id'}};
1584                 $res{'status'} = [ split('', $4) ];
1585                 $res{'to_file'} = unquote($5);
1586         }
1587         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1588         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1589                 $res{'commit'} = $1;
1590         }
1591
1592         return wantarray ? %res : \%res;
1593 }
1594
1595 # parse line of git-ls-tree output
1596 sub parse_ls_tree_line ($;%) {
1597         my $line = shift;
1598         my %opts = @_;
1599         my %res;
1600
1601         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1602         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1603
1604         $res{'mode'} = $1;
1605         $res{'type'} = $2;
1606         $res{'hash'} = $3;
1607         if ($opts{'-z'}) {
1608                 $res{'name'} = $4;
1609         } else {
1610                 $res{'name'} = unquote($4);
1611         }
1612
1613         return wantarray ? %res : \%res;
1614 }
1615
1616 ## ......................................................................
1617 ## parse to array of hashes functions
1618
1619 sub git_get_heads_list {
1620         my $limit = shift;
1621         my @headslist;
1622
1623         open my $fd, '-|', git_cmd(), 'for-each-ref',
1624                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1625                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1626                 'refs/heads'
1627                 or return;
1628         while (my $line = <$fd>) {
1629                 my %ref_item;
1630
1631                 chomp $line;
1632                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1633                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1634                 my ($committer, $epoch, $tz) =
1635                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1636                 $name =~ s!^refs/heads/!!;
1637
1638                 $ref_item{'name'}  = $name;
1639                 $ref_item{'id'}    = $hash;
1640                 $ref_item{'title'} = $title || '(no commit message)';
1641                 $ref_item{'epoch'} = $epoch;
1642                 if ($epoch) {
1643                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1644                 } else {
1645                         $ref_item{'age'} = "unknown";
1646                 }
1647
1648                 push @headslist, \%ref_item;
1649         }
1650         close $fd;
1651
1652         return wantarray ? @headslist : \@headslist;
1653 }
1654
1655 sub git_get_tags_list {
1656         my $limit = shift;
1657         my @tagslist;
1658
1659         open my $fd, '-|', git_cmd(), 'for-each-ref',
1660                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1661                 '--format=%(objectname) %(objecttype) %(refname) '.
1662                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1663                 'refs/tags'
1664                 or return;
1665         while (my $line = <$fd>) {
1666                 my %ref_item;
1667
1668                 chomp $line;
1669                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1670                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1671                 my ($creator, $epoch, $tz) =
1672                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1673                 $name =~ s!^refs/tags/!!;
1674
1675                 $ref_item{'type'} = $type;
1676                 $ref_item{'id'} = $id;
1677                 $ref_item{'name'} = $name;
1678                 if ($type eq "tag") {
1679                         $ref_item{'subject'} = $title;
1680                         $ref_item{'reftype'} = $reftype;
1681                         $ref_item{'refid'}   = $refid;
1682                 } else {
1683                         $ref_item{'reftype'} = $type;
1684                         $ref_item{'refid'}   = $id;
1685                 }
1686
1687                 if ($type eq "tag" || $type eq "commit") {
1688                         $ref_item{'epoch'} = $epoch;
1689                         if ($epoch) {
1690                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1691                         } else {
1692                                 $ref_item{'age'} = "unknown";
1693                         }
1694                 }
1695
1696                 push @tagslist, \%ref_item;
1697         }
1698         close $fd;
1699
1700         return wantarray ? @tagslist : \@tagslist;
1701 }
1702
1703 ## ----------------------------------------------------------------------
1704 ## filesystem-related functions
1705
1706 sub get_file_owner {
1707         my $path = shift;
1708
1709         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1710         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1711         if (!defined $gcos) {
1712                 return undef;
1713         }
1714         my $owner = $gcos;
1715         $owner =~ s/[,;].*$//;
1716         return decode_utf8($owner);
1717 }
1718
1719 ## ......................................................................
1720 ## mimetype related functions
1721
1722 sub mimetype_guess_file {
1723         my $filename = shift;
1724         my $mimemap = shift;
1725         -r $mimemap or return undef;
1726
1727         my %mimemap;
1728         open(MIME, $mimemap) or return undef;
1729         while (<MIME>) {
1730                 next if m/^#/; # skip comments
1731                 my ($mime, $exts) = split(/\t+/);
1732                 if (defined $exts) {
1733                         my @exts = split(/\s+/, $exts);
1734                         foreach my $ext (@exts) {
1735                                 $mimemap{$ext} = $mime;
1736                         }
1737                 }
1738         }
1739         close(MIME);
1740
1741         $filename =~ /\.([^.]*)$/;
1742         return $mimemap{$1};
1743 }
1744
1745 sub mimetype_guess {
1746         my $filename = shift;
1747         my $mime;
1748         $filename =~ /\./ or return undef;
1749
1750         if ($mimetypes_file) {
1751                 my $file = $mimetypes_file;
1752                 if ($file !~ m!^/!) { # if it is relative path
1753                         # it is relative to project
1754                         $file = "$projectroot/$project/$file";
1755                 }
1756                 $mime = mimetype_guess_file($filename, $file);
1757         }
1758         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1759         return $mime;
1760 }
1761
1762 sub blob_mimetype {
1763         my $fd = shift;
1764         my $filename = shift;
1765
1766         if ($filename) {
1767                 my $mime = mimetype_guess($filename);
1768                 $mime and return $mime;
1769         }
1770
1771         # just in case
1772         return $default_blob_plain_mimetype unless $fd;
1773
1774         if (-T $fd) {
1775                 return 'text/plain' .
1776                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1777         } elsif (! $filename) {
1778                 return 'application/octet-stream';
1779         } elsif ($filename =~ m/\.png$/i) {
1780                 return 'image/png';
1781         } elsif ($filename =~ m/\.gif$/i) {
1782                 return 'image/gif';
1783         } elsif ($filename =~ m/\.jpe?g$/i) {
1784                 return 'image/jpeg';
1785         } else {
1786                 return 'application/octet-stream';
1787         }
1788 }
1789
1790 ## ======================================================================
1791 ## functions printing HTML: header, footer, error page
1792
1793 sub git_header_html {
1794         my $status = shift || "200 OK";
1795         my $expires = shift;
1796
1797         my $title = "$site_name";
1798         if (defined $project) {
1799                 $title .= " - " . decode_utf8($project);
1800                 if (defined $action) {
1801                         $title .= "/$action";
1802                         if (defined $file_name) {
1803                                 $title .= " - " . esc_path($file_name);
1804                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1805                                         $title .= "/";
1806                                 }
1807                         }
1808                 }
1809         }
1810         my $content_type;
1811         # require explicit support from the UA if we are to send the page as
1812         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1813         # we have to do this because MSIE sometimes globs '*/*', pretending to
1814         # support xhtml+xml but choking when it gets what it asked for.
1815         if (defined $cgi->http('HTTP_ACCEPT') &&
1816             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1817             $cgi->Accept('application/xhtml+xml') != 0) {
1818                 $content_type = 'application/xhtml+xml';
1819         } else {
1820                 $content_type = 'text/html';
1821         }
1822         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1823                            -status=> $status, -expires => $expires);
1824         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1825         print <<EOF;
1826 <?xml version="1.0" encoding="utf-8"?>
1827 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1828 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1829 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1830 <!-- git core binaries version $git_version -->
1831 <head>
1832 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1833 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1834 <meta name="robots" content="index, nofollow"/>
1835 <title>$title</title>
1836 EOF
1837 # print out each stylesheet that exist
1838         if (defined $stylesheet) {
1839 #provides backwards capability for those people who define style sheet in a config file
1840                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1841         } else {
1842                 foreach my $stylesheet (@stylesheets) {
1843                         next unless $stylesheet;
1844                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1845                 }
1846         }
1847         if (defined $project) {
1848                 printf('<link rel="alternate" title="%s log RSS feed" '.
1849                        'href="%s" type="application/rss+xml" />'."\n",
1850                        esc_param($project), href(action=>"rss"));
1851                 printf('<link rel="alternate" title="%s log Atom feed" '.
1852                        'href="%s" type="application/atom+xml" />'."\n",
1853                        esc_param($project), href(action=>"atom"));
1854         } else {
1855                 printf('<link rel="alternate" title="%s projects list" '.
1856                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1857                        $site_name, href(project=>undef, action=>"project_index"));
1858                 printf('<link rel="alternate" title="%s projects feeds" '.
1859                        'href="%s" type="text/x-opml"/>'."\n",
1860                        $site_name, href(project=>undef, action=>"opml"));
1861         }
1862         if (defined $favicon) {
1863                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1864         }
1865
1866         print "</head>\n" .
1867               "<body>\n";
1868
1869         if (-f $site_header) {
1870                 open (my $fd, $site_header);
1871                 print <$fd>;
1872                 close $fd;
1873         }
1874
1875         print "<div class=\"page_header\">\n" .
1876               $cgi->a({-href => esc_url($logo_url),
1877                        -title => $logo_label},
1878                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1879         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1880         if (defined $project) {
1881                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1882                 if (defined $action) {
1883                         print " / $action";
1884                 }
1885                 print "\n";
1886         }
1887         my ($have_search) = gitweb_check_feature('search');
1888         if ((defined $project) && ($have_search)) {
1889                 if (!defined $searchtext) {
1890                         $searchtext = "";
1891                 }
1892                 my $search_hash;
1893                 if (defined $hash_base) {
1894                         $search_hash = $hash_base;
1895                 } elsif (defined $hash) {
1896                         $search_hash = $hash;
1897                 } else {
1898                         $search_hash = "HEAD";
1899                 }
1900                 $cgi->param("a", "search");
1901                 $cgi->param("h", $search_hash);
1902                 $cgi->param("p", $project);
1903                 print $cgi->startform(-method => "get", -action => $my_uri) .
1904                       "<div class=\"search\">\n" .
1905                       $cgi->hidden(-name => "p") . "\n" .
1906                       $cgi->hidden(-name => "a") . "\n" .
1907                       $cgi->hidden(-name => "h") . "\n" .
1908                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1909                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1910                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1911                       " search:\n",
1912                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1913                       "</div>" .
1914                       $cgi->end_form() . "\n";
1915         }
1916         print "</div>\n";
1917 }
1918
1919 sub git_footer_html {
1920         print "<div class=\"page_footer\">\n";
1921         if (defined $project) {
1922                 my $descr = git_get_project_description($project);
1923                 if (defined $descr) {
1924                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1925                 }
1926                 print $cgi->a({-href => href(action=>"rss"),
1927                               -class => "rss_logo"}, "RSS") . " ";
1928                 print $cgi->a({-href => href(action=>"atom"),
1929                               -class => "rss_logo"}, "Atom") . "\n";
1930         } else {
1931                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1932                               -class => "rss_logo"}, "OPML") . " ";
1933                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1934                               -class => "rss_logo"}, "TXT") . "\n";
1935         }
1936         print "</div>\n" ;
1937
1938         if (-f $site_footer) {
1939                 open (my $fd, $site_footer);
1940                 print <$fd>;
1941                 close $fd;
1942         }
1943
1944         print "</body>\n" .
1945               "</html>";
1946 }
1947
1948 sub die_error {
1949         my $status = shift || "403 Forbidden";
1950         my $error = shift || "Malformed query, file missing or permission denied";
1951
1952         git_header_html($status);
1953         print <<EOF;
1954 <div class="page_body">
1955 <br /><br />
1956 $status - $error
1957 <br />
1958 </div>
1959 EOF
1960         git_footer_html();
1961         exit;
1962 }
1963
1964 ## ----------------------------------------------------------------------
1965 ## functions printing or outputting HTML: navigation
1966
1967 sub git_print_page_nav {
1968         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1969         $extra = '' if !defined $extra; # pager or formats
1970
1971         my @navs = qw(summary shortlog log commit commitdiff tree);
1972         if ($suppress) {
1973                 @navs = grep { $_ ne $suppress } @navs;
1974         }
1975
1976         my %arg = map { $_ => {action=>$_} } @navs;
1977         if (defined $head) {
1978                 for (qw(commit commitdiff)) {
1979                         $arg{$_}{'hash'} = $head;
1980                 }
1981                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1982                         for (qw(shortlog log)) {
1983                                 $arg{$_}{'hash'} = $head;
1984                         }
1985                 }
1986         }
1987         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1988         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1989
1990         print "<div class=\"page_nav\">\n" .
1991                 (join " | ",
1992                  map { $_ eq $current ?
1993                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1994                  } @navs);
1995         print "<br/>\n$extra<br/>\n" .
1996               "</div>\n";
1997 }
1998
1999 sub format_paging_nav {
2000         my ($action, $hash, $head, $page, $nrevs) = @_;
2001         my $paging_nav;
2002
2003
2004         if ($hash ne $head || $page) {
2005                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2006         } else {
2007                 $paging_nav .= "HEAD";
2008         }
2009
2010         if ($page > 0) {
2011                 $paging_nav .= " &sdot; " .
2012                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2013                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2014         } else {
2015                 $paging_nav .= " &sdot; prev";
2016         }
2017
2018         if ($nrevs >= (100 * ($page+1)-1)) {
2019                 $paging_nav .= " &sdot; " .
2020                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2021                                  -accesskey => "n", -title => "Alt-n"}, "next");
2022         } else {
2023                 $paging_nav .= " &sdot; next";
2024         }
2025
2026         return $paging_nav;
2027 }
2028
2029 ## ......................................................................
2030 ## functions printing or outputting HTML: div
2031
2032 sub git_print_header_div {
2033         my ($action, $title, $hash, $hash_base) = @_;
2034         my %args = ();
2035
2036         $args{'action'} = $action;
2037         $args{'hash'} = $hash if $hash;
2038         $args{'hash_base'} = $hash_base if $hash_base;
2039
2040         print "<div class=\"header\">\n" .
2041               $cgi->a({-href => href(%args), -class => "title"},
2042               $title ? $title : $action) .
2043               "\n</div>\n";
2044 }
2045
2046 #sub git_print_authorship (\%) {
2047 sub git_print_authorship {
2048         my $co = shift;
2049
2050         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2051         print "<div class=\"author_date\">" .
2052               esc_html($co->{'author_name'}) .
2053               " [$ad{'rfc2822'}";
2054         if ($ad{'hour_local'} < 6) {
2055                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2056                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2057         } else {
2058                 printf(" (%02d:%02d %s)",
2059                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2060         }
2061         print "]</div>\n";
2062 }
2063
2064 sub git_print_page_path {
2065         my $name = shift;
2066         my $type = shift;
2067         my $hb = shift;
2068
2069
2070         print "<div class=\"page_path\">";
2071         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2072                       -title => 'tree root'}, decode_utf8("[$project]"));
2073         print " / ";
2074         if (defined $name) {
2075                 my @dirname = split '/', $name;
2076                 my $basename = pop @dirname;
2077                 my $fullname = '';
2078
2079                 foreach my $dir (@dirname) {
2080                         $fullname .= ($fullname ? '/' : '') . $dir;
2081                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2082                                                      hash_base=>$hb),
2083                                       -title => $fullname}, esc_path($dir));
2084                         print " / ";
2085                 }
2086                 if (defined $type && $type eq 'blob') {
2087                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2088                                                      hash_base=>$hb),
2089                                       -title => $name}, esc_path($basename));
2090                 } elsif (defined $type && $type eq 'tree') {
2091                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2092                                                      hash_base=>$hb),
2093                                       -title => $name}, esc_path($basename));
2094                         print " / ";
2095                 } else {
2096                         print esc_path($basename);
2097                 }
2098         }
2099         print "<br/></div>\n";
2100 }
2101
2102 # sub git_print_log (\@;%) {
2103 sub git_print_log ($;%) {
2104         my $log = shift;
2105         my %opts = @_;
2106
2107         if ($opts{'-remove_title'}) {
2108                 # remove title, i.e. first line of log
2109                 shift @$log;
2110         }
2111         # remove leading empty lines
2112         while (defined $log->[0] && $log->[0] eq "") {
2113                 shift @$log;
2114         }
2115
2116         # print log
2117         my $signoff = 0;
2118         my $empty = 0;
2119         foreach my $line (@$log) {
2120                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2121                         $signoff = 1;
2122                         $empty = 0;
2123                         if (! $opts{'-remove_signoff'}) {
2124                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2125                                 next;
2126                         } else {
2127                                 # remove signoff lines
2128                                 next;
2129                         }
2130                 } else {
2131                         $signoff = 0;
2132                 }
2133
2134                 # print only one empty line
2135                 # do not print empty line after signoff
2136                 if ($line eq "") {
2137                         next if ($empty || $signoff);
2138                         $empty = 1;
2139                 } else {
2140                         $empty = 0;
2141                 }
2142
2143                 print format_log_line_html($line) . "<br/>\n";
2144         }
2145
2146         if ($opts{'-final_empty_line'}) {
2147                 # end with single empty line
2148                 print "<br/>\n" unless $empty;
2149         }
2150 }
2151
2152 # return link target (what link points to)
2153 sub git_get_link_target {
2154         my $hash = shift;
2155         my $link_target;
2156
2157         # read link
2158         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2159                 or return;
2160         {
2161                 local $/;
2162                 $link_target = <$fd>;
2163         }
2164         close $fd
2165                 or return;
2166
2167         return $link_target;
2168 }
2169
2170 # given link target, and the directory (basedir) the link is in,
2171 # return target of link relative to top directory (top tree);
2172 # return undef if it is not possible (including absolute links).
2173 sub normalize_link_target {
2174         my ($link_target, $basedir, $hash_base) = @_;
2175
2176         # we can normalize symlink target only if $hash_base is provided
2177         return unless $hash_base;
2178
2179         # absolute symlinks (beginning with '/') cannot be normalized
2180         return if (substr($link_target, 0, 1) eq '/');
2181
2182         # normalize link target to path from top (root) tree (dir)
2183         my $path;
2184         if ($basedir) {
2185                 $path = $basedir . '/' . $link_target;
2186         } else {
2187                 # we are in top (root) tree (dir)
2188                 $path = $link_target;
2189         }
2190
2191         # remove //, /./, and /../
2192         my @path_parts;
2193         foreach my $part (split('/', $path)) {
2194                 # discard '.' and ''
2195                 next if (!$part || $part eq '.');
2196                 # handle '..'
2197                 if ($part eq '..') {
2198                         if (@path_parts) {
2199                                 pop @path_parts;
2200                         } else {
2201                                 # link leads outside repository (outside top dir)
2202                                 return;
2203                         }
2204                 } else {
2205                         push @path_parts, $part;
2206                 }
2207         }
2208         $path = join('/', @path_parts);
2209
2210         return $path;
2211 }
2212
2213 # print tree entry (row of git_tree), but without encompassing <tr> element
2214 sub git_print_tree_entry {
2215         my ($t, $basedir, $hash_base, $have_blame) = @_;
2216
2217         my %base_key = ();
2218         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2219
2220         # The format of a table row is: mode list link.  Where mode is
2221         # the mode of the entry, list is the name of the entry, an href,
2222         # and link is the action links of the entry.
2223
2224         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2225         if ($t->{'type'} eq "blob") {
2226                 print "<td class=\"list\">" .
2227                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2228                                                file_name=>"$basedir$t->{'name'}", %base_key),
2229                                 -class => "list"}, esc_path($t->{'name'}));
2230                 if (S_ISLNK(oct $t->{'mode'})) {
2231                         my $link_target = git_get_link_target($t->{'hash'});
2232                         if ($link_target) {
2233                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2234                                 if (defined $norm_target) {
2235                                         print " -> " .
2236                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2237                                                                      file_name=>$norm_target),
2238                                                        -title => $norm_target}, esc_path($link_target));
2239                                 } else {
2240                                         print " -> " . esc_path($link_target);
2241                                 }
2242                         }
2243                 }
2244                 print "</td>\n";
2245                 print "<td class=\"link\">";
2246                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2247                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2248                               "blob");
2249                 if ($have_blame) {
2250                         print " | " .
2251                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2252                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2253                                       "blame");
2254                 }
2255                 if (defined $hash_base) {
2256                         print " | " .
2257                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2258                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2259                                       "history");
2260                 }
2261                 print " | " .
2262                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2263                                                file_name=>"$basedir$t->{'name'}")},
2264                                 "raw");
2265                 print "</td>\n";
2266
2267         } elsif ($t->{'type'} eq "tree") {
2268                 print "<td class=\"list\">";
2269                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2270                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2271                               esc_path($t->{'name'}));
2272                 print "</td>\n";
2273                 print "<td class=\"link\">";
2274                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2275                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2276                               "tree");
2277                 if (defined $hash_base) {
2278                         print " | " .
2279                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2280                                                      file_name=>"$basedir$t->{'name'}")},
2281                                       "history");
2282                 }
2283                 print "</td>\n";
2284         }
2285 }
2286
2287 ## ......................................................................
2288 ## functions printing large fragments of HTML
2289
2290 sub fill_from_file_info {
2291         my ($diff, @parents) = @_;
2292
2293         $diff->{'from_file'} = [ ];
2294         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2295         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2296                 if ($diff->{'status'}[$i] eq 'R' ||
2297                     $diff->{'status'}[$i] eq 'C') {
2298                         $diff->{'from_file'}[$i] =
2299                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2300                 }
2301         }
2302
2303         return $diff;
2304 }
2305
2306 # parameters can be strings, or references to arrays of strings
2307 sub from_ids_eq {
2308         my ($a, $b) = @_;
2309
2310         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2311                 for (my $i = 0; $i < @$a; ++$i) {
2312                         return 0 unless ($a->[$i] eq $b->[$i]);
2313                 }
2314                 return 1;
2315         } elsif (!ref($a) && !ref($b)) {
2316                 return $a eq $b;
2317         } else {
2318                 return 0;
2319         }
2320 }
2321
2322
2323 sub git_difftree_body {
2324         my ($difftree, $hash, @parents) = @_;
2325         my ($parent) = $parents[0];
2326         my ($have_blame) = gitweb_check_feature('blame');
2327         print "<div class=\"list_head\">\n";
2328         if ($#{$difftree} > 10) {
2329                 print(($#{$difftree} + 1) . " files changed:\n");
2330         }
2331         print "</div>\n";
2332
2333         print "<table class=\"" .
2334               (@parents > 1 ? "combined " : "") .
2335               "diff_tree\">\n";
2336         my $alternate = 1;
2337         my $patchno = 0;
2338         foreach my $line (@{$difftree}) {
2339                 my $diff;
2340                 if (ref($line) eq "HASH") {
2341                         # pre-parsed (or generated by hand)
2342                         $diff = $line;
2343                 } else {
2344                         $diff = parse_difftree_raw_line($line);
2345                 }
2346
2347                 if ($alternate) {
2348                         print "<tr class=\"dark\">\n";
2349                 } else {
2350                         print "<tr class=\"light\">\n";
2351                 }
2352                 $alternate ^= 1;
2353
2354                 if (exists $diff->{'nparents'}) { # combined diff
2355
2356                         fill_from_file_info($diff, @parents)
2357                                 unless exists $diff->{'from_file'};
2358
2359                         if ($diff->{'to_id'} ne ('0' x 40)) {
2360                                 # file exists in the result (child) commit
2361                                 print "<td>" .
2362                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2363                                                              file_name=>$diff->{'to_file'},
2364                                                              hash_base=>$hash),
2365                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2366                                       "</td>\n";
2367                         } else {
2368                                 print "<td>" .
2369                                       esc_path($diff->{'to_file'}) .
2370                                       "</td>\n";
2371                         }
2372
2373                         if ($action eq 'commitdiff') {
2374                                 # link to patch
2375                                 $patchno++;
2376                                 print "<td class=\"link\">" .
2377                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2378                                       " | " .
2379                                       "</td>\n";
2380                         }
2381
2382                         my $has_history = 0;
2383                         my $not_deleted = 0;
2384                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2385                                 my $hash_parent = $parents[$i];
2386                                 my $from_hash = $diff->{'from_id'}[$i];
2387                                 my $from_path = $diff->{'from_file'}[$i];
2388                                 my $status = $diff->{'status'}[$i];
2389
2390                                 $has_history ||= ($status ne 'A');
2391                                 $not_deleted ||= ($status ne 'D');
2392
2393                                 if ($status eq 'A') {
2394                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2395                                 } elsif ($status eq 'D') {
2396                                         print "<td class=\"link\">" .
2397                                               $cgi->a({-href => href(action=>"blob",
2398                                                                      hash_base=>$hash,
2399                                                                      hash=>$from_hash,
2400                                                                      file_name=>$from_path)},
2401                                                       "blob" . ($i+1)) .
2402                                               " | </td>\n";
2403                                 } else {
2404                                         if ($diff->{'to_id'} eq $from_hash) {
2405                                                 print "<td class=\"link nochange\">";
2406                                         } else {
2407                                                 print "<td class=\"link\">";
2408                                         }
2409                                         print $cgi->a({-href => href(action=>"blobdiff",
2410                                                                      hash=>$diff->{'to_id'},
2411                                                                      hash_parent=>$from_hash,
2412                                                                      hash_base=>$hash,
2413                                                                      hash_parent_base=>$hash_parent,
2414                                                                      file_name=>$diff->{'to_file'},
2415                                                                      file_parent=>$from_path)},
2416                                                       "diff" . ($i+1)) .
2417                                               " | </td>\n";
2418                                 }
2419                         }
2420
2421                         print "<td class=\"link\">";
2422                         if ($not_deleted) {
2423                                 print $cgi->a({-href => href(action=>"blob",
2424                                                              hash=>$diff->{'to_id'},
2425                                                              file_name=>$diff->{'to_file'},
2426                                                              hash_base=>$hash)},
2427                                               "blob");
2428                                 print " | " if ($has_history);
2429                         }
2430                         if ($has_history) {
2431                                 print $cgi->a({-href => href(action=>"history",
2432                                                              file_name=>$diff->{'to_file'},
2433                                                              hash_base=>$hash)},
2434                                               "history");
2435                         }
2436                         print "</td>\n";
2437
2438                         print "</tr>\n";
2439                         next; # instead of 'else' clause, to avoid extra indent
2440                 }
2441                 # else ordinary diff
2442
2443                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2444                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2445                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2446                         $to_mode_oct = oct $diff->{'to_mode'};
2447                         if (S_ISREG($to_mode_oct)) { # only for regular file
2448                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2449                         }
2450                         $to_file_type = file_type($diff->{'to_mode'});
2451                 }
2452                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2453                         $from_mode_oct = oct $diff->{'from_mode'};
2454                         if (S_ISREG($to_mode_oct)) { # only for regular file
2455                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2456                         }
2457                         $from_file_type = file_type($diff->{'from_mode'});
2458                 }
2459
2460                 if ($diff->{'status'} eq "A") { # created
2461                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2462                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2463                         $mode_chng   .= "]</span>";
2464                         print "<td>";
2465                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2466                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2467                                       -class => "list"}, esc_path($diff->{'file'}));
2468                         print "</td>\n";
2469                         print "<td>$mode_chng</td>\n";
2470                         print "<td class=\"link\">";
2471                         if ($action eq 'commitdiff') {
2472                                 # link to patch
2473                                 $patchno++;
2474                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2475                                 print " | ";
2476                         }
2477                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2478                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2479                                       "blob");
2480                         print "</td>\n";
2481
2482                 } elsif ($diff->{'status'} eq "D") { # deleted
2483                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2484                         print "<td>";
2485                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2486                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2487                                        -class => "list"}, esc_path($diff->{'file'}));
2488                         print "</td>\n";
2489                         print "<td>$mode_chng</td>\n";
2490                         print "<td class=\"link\">";
2491                         if ($action eq 'commitdiff') {
2492                                 # link to patch
2493                                 $patchno++;
2494                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2495                                 print " | ";
2496                         }
2497                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2498                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2499                                       "blob") . " | ";
2500                         if ($have_blame) {
2501                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2502                                                              file_name=>$diff->{'file'})},
2503                                               "blame") . " | ";
2504                         }
2505                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2506                                                      file_name=>$diff->{'file'})},
2507                                       "history");
2508                         print "</td>\n";
2509
2510                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2511                         my $mode_chnge = "";
2512                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2513                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2514                                 if ($from_file_type ne $to_file_type) {
2515                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2516                                 }
2517                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2518                                         if ($from_mode_str && $to_mode_str) {
2519                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2520                                         } elsif ($to_mode_str) {
2521                                                 $mode_chnge .= " mode: $to_mode_str";
2522                                         }
2523                                 }
2524                                 $mode_chnge .= "]</span>\n";
2525                         }
2526                         print "<td>";
2527                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2528                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2529                                       -class => "list"}, esc_path($diff->{'file'}));
2530                         print "</td>\n";
2531                         print "<td>$mode_chnge</td>\n";
2532                         print "<td class=\"link\">";
2533                         if ($action eq 'commitdiff') {
2534                                 # link to patch
2535                                 $patchno++;
2536                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2537                                       " | ";
2538                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2539                                 # "commit" view and modified file (not onlu mode changed)
2540                                 print $cgi->a({-href => href(action=>"blobdiff",
2541                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2542                                                              hash_base=>$hash, hash_parent_base=>$parent,
2543                                                              file_name=>$diff->{'file'})},
2544                                               "diff") .
2545                                       " | ";
2546                         }
2547                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2548                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2549                                        "blob") . " | ";
2550                         if ($have_blame) {
2551                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2552                                                              file_name=>$diff->{'file'})},
2553                                               "blame") . " | ";
2554                         }
2555                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2556                                                      file_name=>$diff->{'file'})},
2557                                       "history");
2558                         print "</td>\n";
2559
2560                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2561                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2562                         my $nstatus = $status_name{$diff->{'status'}};
2563                         my $mode_chng = "";
2564                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2565                                 # mode also for directories, so we cannot use $to_mode_str
2566                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2567                         }
2568                         print "<td>" .
2569                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2570                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2571                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2572                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2573                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2574                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2575                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2576                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2577                               "<td class=\"link\">";
2578                         if ($action eq 'commitdiff') {
2579                                 # link to patch
2580                                 $patchno++;
2581                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2582                                       " | ";
2583                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2584                                 # "commit" view and modified file (not only pure rename or copy)
2585                                 print $cgi->a({-href => href(action=>"blobdiff",
2586                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2587                                                              hash_base=>$hash, hash_parent_base=>$parent,
2588                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2589                                               "diff") .
2590                                       " | ";
2591                         }
2592                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2593                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2594                                       "blob") . " | ";
2595                         if ($have_blame) {
2596                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2597                                                              file_name=>$diff->{'to_file'})},
2598                                               "blame") . " | ";
2599                         }
2600                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2601                                                     file_name=>$diff->{'to_file'})},
2602                                       "history");
2603                         print "</td>\n";
2604
2605                 } # we should not encounter Unmerged (U) or Unknown (X) status
2606                 print "</tr>\n";
2607         }
2608         print "</table>\n";
2609 }
2610
2611 sub git_patchset_body {
2612         my ($fd, $difftree, $hash, @hash_parents) = @_;
2613         my ($hash_parent) = $hash_parents[0];
2614
2615         my $patch_idx = 0;
2616         my $patch_number = 0;
2617         my $patch_line;
2618         my $diffinfo;
2619         my (%from, %to);
2620
2621         print "<div class=\"patchset\">\n";
2622
2623         # skip to first patch
2624         while ($patch_line = <$fd>) {
2625                 chomp $patch_line;
2626
2627                 last if ($patch_line =~ m/^diff /);
2628         }
2629
2630  PATCH:
2631         while ($patch_line) {
2632                 my @diff_header;
2633                 my ($from_id, $to_id);
2634
2635                 # git diff header
2636                 #assert($patch_line =~ m/^diff /) if DEBUG;
2637                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2638                 $patch_number++;
2639                 push @diff_header, $patch_line;
2640
2641                 # extended diff header
2642         EXTENDED_HEADER:
2643                 while ($patch_line = <$fd>) {
2644                         chomp $patch_line;
2645
2646                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2647
2648                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2649                                 $from_id = $1;
2650                                 $to_id   = $2;
2651                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2652                                 $from_id = [ split(',', $1) ];
2653                                 $to_id   = $2;
2654                         }
2655
2656                         push @diff_header, $patch_line;
2657                 }
2658                 my $last_patch_line = $patch_line;
2659
2660                 # check if current patch belong to current raw line
2661                 # and parse raw git-diff line if needed
2662                 if (defined $diffinfo &&
2663                     defined $from_id && defined $to_id &&
2664                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2665                     $diffinfo->{'to_id'} eq $to_id) {
2666                         # this is continuation of a split patch
2667                         print "<div class=\"patch cont\">\n";
2668                 } else {
2669                         # advance raw git-diff output if needed
2670                         $patch_idx++ if defined $diffinfo;
2671
2672                         # read and prepare patch information
2673                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2674                                 # pre-parsed (or generated by hand)
2675                                 $diffinfo = $difftree->[$patch_idx];
2676                         } else {
2677                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2678                         }
2679                         if ($diffinfo->{'nparents'}) {
2680                                 # combined diff
2681                                 $from{'file'} = [];
2682                                 $from{'href'} = [];
2683                                 fill_from_file_info($diffinfo, @hash_parents)
2684                                         unless exists $diffinfo->{'from_file'};
2685                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2686                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2687                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2688                                                 $from{'href'}[$i] = href(action=>"blob",
2689                                                                          hash_base=>$hash_parents[$i],
2690                                                                          hash=>$diffinfo->{'from_id'}[$i],
2691                                                                          file_name=>$from{'file'}[$i]);
2692                                         } else {
2693                                                 $from{'href'}[$i] = undef;
2694                                         }
2695                                 }
2696                         } else {
2697                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2698                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2699                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2700                                                              hash=>$diffinfo->{'from_id'},
2701                                                              file_name=>$from{'file'});
2702                                 } else {
2703                                         delete $from{'href'};
2704                                 }
2705                         }
2706                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2707                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2708                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2709                                                    hash=>$diffinfo->{'to_id'},
2710                                                    file_name=>$to{'file'});
2711                         } else {
2712                                 delete $to{'href'};
2713                         }
2714                         # this is first patch for raw difftree line with $patch_idx index
2715                         # we index @$difftree array from 0, but number patches from 1
2716                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2717                 }
2718
2719                 # print "git diff" header
2720                 $patch_line = shift @diff_header;
2721                 if ($diffinfo->{'nparents'}) {
2722
2723                         # combined diff
2724                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2725                         if ($to{'href'}) {
2726                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2727                                                        esc_path($to{'file'}));
2728                         } else { # file was deleted
2729                                 $patch_line .= esc_path($to{'file'});
2730                         }
2731
2732                 } else {
2733
2734                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2735                         if ($from{'href'}) {
2736                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2737                                                        'a/' . esc_path($from{'file'}));
2738                         } else { # file was added
2739                                 $patch_line .= 'a/' . esc_path($from{'file'});
2740                         }
2741                         $patch_line .= ' ';
2742                         if ($to{'href'}) {
2743                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2744                                                        'b/' . esc_path($to{'file'}));
2745                         } else { # file was deleted
2746                                 $patch_line .= 'b/' . esc_path($to{'file'});
2747                         }
2748
2749                 }
2750                 print "<div class=\"diff header\">$patch_line</div>\n";
2751
2752                 # print extended diff header
2753                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2754         EXTENDED_HEADER:
2755                 foreach $patch_line (@diff_header) {
2756                         # match <path>
2757                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2758                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2759                                                        esc_path($from{'file'}));
2760                         }
2761                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2762                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2763                                                        esc_path($to{'file'}));
2764                         }
2765                         # match single <mode>
2766                         if ($patch_line =~ m/\s(\d{6})$/) {
2767                                 $patch_line .= '<span class="info"> (' .
2768                                                file_type_long($1) .
2769                                                ')</span>';
2770                         }
2771                         # match <hash>
2772                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2773                                 # can match only for combined diff
2774                                 $patch_line = 'index ';
2775                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2776                                         if ($from{'href'}[$i]) {
2777                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2778                                                                         -class=>"hash"},
2779                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2780                                         } else {
2781                                                 $patch_line .= '0' x 7;
2782                                         }
2783                                         # separator
2784                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2785                                 }
2786                                 $patch_line .= '..';
2787                                 if ($to{'href'}) {
2788                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2789                                                                substr($diffinfo->{'to_id'},0,7));
2790                                 } else {
2791                                         $patch_line .= '0' x 7;
2792                                 }
2793
2794                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2795                                 # can match only for ordinary diff
2796                                 my ($from_link, $to_link);
2797                                 if ($from{'href'}) {
2798                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2799                                                              substr($diffinfo->{'from_id'},0,7));
2800                                 } else {
2801                                         $from_link = '0' x 7;
2802                                 }
2803                                 if ($to{'href'}) {
2804                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2805                                                            substr($diffinfo->{'to_id'},0,7));
2806                                 } else {
2807                                         $to_link = '0' x 7;
2808                                 }
2809                                 #affirm {
2810                                 #       my ($from_hash, $to_hash) =
2811                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2812                                 #       my ($from_id, $to_id) =
2813                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2814                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2815                                 #} if DEBUG;
2816                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2817                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2818                         }
2819                         print $patch_line . "<br/>\n";
2820                 }
2821                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2822
2823                 # from-file/to-file diff header
2824                 $patch_line = $last_patch_line;
2825                 if (! $patch_line) {
2826                         print "</div>\n"; # class="patch"
2827                         last PATCH;
2828                 }
2829                 next PATCH if ($patch_line =~ m/^diff /);
2830                 #assert($patch_line =~ m/^---/) if DEBUG;
2831                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2832                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2833                         $patch_line = '--- a/' .
2834                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2835                                               esc_path($from{'file'}));
2836                 }
2837                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2838
2839                 $patch_line = <$fd>;
2840                 chomp $patch_line;
2841
2842                 #assert($patch_line =~ m/^+++/) if DEBUG;
2843                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2844                         $patch_line = '+++ b/' .
2845                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2846                                               esc_path($to{'file'}));
2847                 }
2848                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2849
2850                 # the patch itself
2851         LINE:
2852                 while ($patch_line = <$fd>) {
2853                         chomp $patch_line;
2854
2855                         next PATCH if ($patch_line =~ m/^diff /);
2856
2857                         print format_diff_line($patch_line, \%from, \%to);
2858                 }
2859
2860         } continue {
2861                 print "</div>\n"; # class="patch"
2862         }
2863         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2864
2865         print "</div>\n"; # class="patchset"
2866 }
2867
2868 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2869
2870 sub git_project_list_body {
2871         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2872
2873         my ($check_forks) = gitweb_check_feature('forks');
2874
2875         my @projects;
2876         foreach my $pr (@$projlist) {
2877                 my (@aa) = git_get_last_activity($pr->{'path'});
2878                 unless (@aa) {
2879                         next;
2880                 }
2881                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2882                 if (!defined $pr->{'descr'}) {
2883                         my $descr = git_get_project_description($pr->{'path'}) || "";
2884                         $pr->{'descr_long'} = decode_utf8($descr);
2885                         $pr->{'descr'} = chop_str($descr, 25, 5);
2886                 }
2887                 if (!defined $pr->{'owner'}) {
2888                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2889                 }
2890                 if ($check_forks) {
2891                         my $pname = $pr->{'path'};
2892                         if (($pname =~ s/\.git$//) &&
2893                             ($pname !~ /\/$/) &&
2894                             (-d "$projectroot/$pname")) {
2895                                 $pr->{'forks'} = "-d $projectroot/$pname";
2896                         }
2897                         else {
2898                                 $pr->{'forks'} = 0;
2899                         }
2900                 }
2901                 push @projects, $pr;
2902         }
2903
2904         $order ||= $default_projects_order;
2905         $from = 0 unless defined $from;
2906         $to = $#projects if (!defined $to || $#projects < $to);
2907
2908         print "<table class=\"project_list\">\n";
2909         unless ($no_header) {
2910                 print "<tr>\n";
2911                 if ($check_forks) {
2912                         print "<th></th>\n";
2913                 }
2914                 if ($order eq "project") {
2915                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2916                         print "<th>Project</th>\n";
2917                 } else {
2918                         print "<th>" .
2919                               $cgi->a({-href => href(project=>undef, order=>'project'),
2920                                        -class => "header"}, "Project") .
2921                               "</th>\n";
2922                 }
2923                 if ($order eq "descr") {
2924                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2925                         print "<th>Description</th>\n";
2926                 } else {
2927                         print "<th>" .
2928                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2929                                        -class => "header"}, "Description") .
2930                               "</th>\n";
2931                 }
2932                 if ($order eq "owner") {
2933                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2934                         print "<th>Owner</th>\n";
2935                 } else {
2936                         print "<th>" .
2937                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2938                                        -class => "header"}, "Owner") .
2939                               "</th>\n";
2940                 }
2941                 if ($order eq "age") {
2942                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2943                         print "<th>Last Change</th>\n";
2944                 } else {
2945                         print "<th>" .
2946                               $cgi->a({-href => href(project=>undef, order=>'age'),
2947                                        -class => "header"}, "Last Change") .
2948                               "</th>\n";
2949                 }
2950                 print "<th></th>\n" .
2951                       "</tr>\n";
2952         }
2953         my $alternate = 1;
2954         for (my $i = $from; $i <= $to; $i++) {
2955                 my $pr = $projects[$i];
2956                 if ($alternate) {
2957                         print "<tr class=\"dark\">\n";
2958                 } else {
2959                         print "<tr class=\"light\">\n";
2960                 }
2961                 $alternate ^= 1;
2962                 if ($check_forks) {
2963                         print "<td>";
2964                         if ($pr->{'forks'}) {
2965                                 print "<!-- $pr->{'forks'} -->\n";
2966                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2967                         }
2968                         print "</td>\n";
2969                 }
2970                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2971                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2972                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2973                                         -class => "list", -title => $pr->{'descr_long'}},
2974                                         esc_html($pr->{'descr'})) . "</td>\n" .
2975                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2976                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2977                       $pr->{'age_string'} . "</td>\n" .
2978                       "<td class=\"link\">" .
2979                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2980                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2981                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2982                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2983                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2984                       "</td>\n" .
2985                       "</tr>\n";
2986         }
2987         if (defined $extra) {
2988                 print "<tr>\n";
2989                 if ($check_forks) {
2990                         print "<td></td>\n";
2991                 }
2992                 print "<td colspan=\"5\">$extra</td>\n" .
2993                       "</tr>\n";
2994         }
2995         print "</table>\n";
2996 }
2997
2998 sub git_shortlog_body {
2999         # uses global variable $project
3000         my ($commitlist, $from, $to, $refs, $extra) = @_;
3001
3002         my $have_snapshot = gitweb_have_snapshot();
3003
3004         $from = 0 unless defined $from;
3005         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3006
3007         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3008         my $alternate = 1;
3009         for (my $i = $from; $i <= $to; $i++) {
3010                 my %co = %{$commitlist->[$i]};
3011                 my $commit = $co{'id'};
3012                 my $ref = format_ref_marker($refs, $commit);
3013                 if ($alternate) {
3014                         print "<tr class=\"dark\">\n";
3015                 } else {
3016                         print "<tr class=\"light\">\n";
3017                 }
3018                 $alternate ^= 1;
3019                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3020                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3021                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3022                       "<td>";
3023                 print format_subject_html($co{'title'}, $co{'title_short'},
3024                                           href(action=>"commit", hash=>$commit), $ref);
3025                 print "</td>\n" .
3026                       "<td class=\"link\">" .
3027                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3028                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3029                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3030                 if ($have_snapshot) {
3031                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3032                 }
3033                 print "</td>\n" .
3034                       "</tr>\n";
3035         }
3036         if (defined $extra) {
3037                 print "<tr>\n" .
3038                       "<td colspan=\"4\">$extra</td>\n" .
3039                       "</tr>\n";
3040         }
3041         print "</table>\n";
3042 }
3043
3044 sub git_history_body {
3045         # Warning: assumes constant type (blob or tree) during history
3046         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3047
3048         $from = 0 unless defined $from;
3049         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3050
3051         print "<table class=\"history\" cellspacing=\"0\">\n";
3052         my $alternate = 1;
3053         for (my $i = $from; $i <= $to; $i++) {
3054                 my %co = %{$commitlist->[$i]};
3055                 if (!%co) {
3056                         next;
3057                 }
3058                 my $commit = $co{'id'};
3059
3060                 my $ref = format_ref_marker($refs, $commit);
3061
3062                 if ($alternate) {
3063                         print "<tr class=\"dark\">\n";
3064                 } else {
3065                         print "<tr class=\"light\">\n";
3066                 }
3067                 $alternate ^= 1;
3068                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3069                       # shortlog uses      chop_str($co{'author_name'}, 10)
3070                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3071                       "<td>";
3072                 # originally git_history used chop_str($co{'title'}, 50)
3073                 print format_subject_html($co{'title'}, $co{'title_short'},
3074                                           href(action=>"commit", hash=>$commit), $ref);
3075                 print "</td>\n" .
3076                       "<td class=\"link\">" .
3077                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3078                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3079
3080                 if ($ftype eq 'blob') {
3081                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3082                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3083                         if (defined $blob_current && defined $blob_parent &&
3084                                         $blob_current ne $blob_parent) {
3085                                 print " | " .
3086                                         $cgi->a({-href => href(action=>"blobdiff",
3087                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3088                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3089                                                                file_name=>$file_name)},
3090                                                 "diff to current");
3091                         }
3092                 }
3093                 print "</td>\n" .
3094                       "</tr>\n";
3095         }
3096         if (defined $extra) {
3097                 print "<tr>\n" .
3098                       "<td colspan=\"4\">$extra</td>\n" .
3099                       "</tr>\n";
3100         }
3101         print "</table>\n";
3102 }
3103
3104 sub git_tags_body {
3105         # uses global variable $project
3106         my ($taglist, $from, $to, $extra) = @_;
3107         $from = 0 unless defined $from;
3108         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3109
3110         print "<table class=\"tags\" cellspacing=\"0\">\n";
3111         my $alternate = 1;
3112         for (my $i = $from; $i <= $to; $i++) {
3113                 my $entry = $taglist->[$i];
3114                 my %tag = %$entry;
3115                 my $comment = $tag{'subject'};
3116                 my $comment_short;
3117                 if (defined $comment) {
3118                         $comment_short = chop_str($comment, 30, 5);
3119                 }
3120                 if ($alternate) {
3121                         print "<tr class=\"dark\">\n";
3122                 } else {
3123                         print "<tr class=\"light\">\n";
3124                 }
3125                 $alternate ^= 1;
3126                 if (defined $tag{'age'}) {
3127                         print "<td><i>$tag{'age'}</i></td>\n";
3128                 } else {
3129                         print "<td></td>\n";
3130                 }
3131                 print "<td>" .
3132                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3133                                -class => "list name"}, esc_html($tag{'name'})) .
3134                       "</td>\n" .
3135                       "<td>";
3136                 if (defined $comment) {
3137                         print format_subject_html($comment, $comment_short,
3138                                                   href(action=>"tag", hash=>$tag{'id'}));
3139                 }
3140                 print "</td>\n" .
3141                       "<td class=\"selflink\">";
3142                 if ($tag{'type'} eq "tag") {
3143                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3144                 } else {
3145                         print "&nbsp;";
3146                 }
3147                 print "</td>\n" .
3148                       "<td class=\"link\">" . " | " .
3149                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3150                 if ($tag{'reftype'} eq "commit") {
3151                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3152                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3153                 } elsif ($tag{'reftype'} eq "blob") {
3154                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3155                 }
3156                 print "</td>\n" .
3157                       "</tr>";
3158         }
3159         if (defined $extra) {
3160                 print "<tr>\n" .
3161                       "<td colspan=\"5\">$extra</td>\n" .
3162                       "</tr>\n";
3163         }
3164         print "</table>\n";
3165 }
3166
3167 sub git_heads_body {
3168         # uses global variable $project
3169         my ($headlist, $head, $from, $to, $extra) = @_;
3170         $from = 0 unless defined $from;
3171         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3172
3173         print "<table class=\"heads\" cellspacing=\"0\">\n";
3174         my $alternate = 1;
3175         for (my $i = $from; $i <= $to; $i++) {
3176                 my $entry = $headlist->[$i];
3177                 my %ref = %$entry;
3178                 my $curr = $ref{'id'} eq $head;
3179                 if ($alternate) {
3180                         print "<tr class=\"dark\">\n";
3181                 } else {
3182                         print "<tr class=\"light\">\n";
3183                 }
3184                 $alternate ^= 1;
3185                 print "<td><i>$ref{'age'}</i></td>\n" .
3186                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3187                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3188                                -class => "list name"},esc_html($ref{'name'})) .
3189                       "</td>\n" .
3190                       "<td class=\"link\">" .
3191                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3192                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3193                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3194                       "</td>\n" .
3195                       "</tr>";
3196         }
3197         if (defined $extra) {
3198                 print "<tr>\n" .
3199                       "<td colspan=\"3\">$extra</td>\n" .
3200                       "</tr>\n";
3201         }
3202         print "</table>\n";
3203 }
3204
3205 sub git_search_grep_body {
3206         my ($commitlist, $from, $to, $extra) = @_;
3207         $from = 0 unless defined $from;
3208         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3209
3210         print "<table class=\"grep\" cellspacing=\"0\">\n";
3211         my $alternate = 1;
3212         for (my $i = $from; $i <= $to; $i++) {
3213                 my %co = %{$commitlist->[$i]};
3214                 if (!%co) {
3215                         next;
3216                 }
3217                 my $commit = $co{'id'};
3218                 if ($alternate) {
3219                         print "<tr class=\"dark\">\n";
3220                 } else {
3221                         print "<tr class=\"light\">\n";
3222                 }
3223                 $alternate ^= 1;
3224                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3225                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3226                       "<td>" .
3227                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3228                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3229                 my $comment = $co{'comment'};
3230                 foreach my $line (@$comment) {
3231                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3232                                 my $lead = esc_html($1) || "";
3233                                 $lead = chop_str($lead, 30, 10);
3234                                 my $match = esc_html($2) || "";
3235                                 my $trail = esc_html($3) || "";
3236                                 $trail = chop_str($trail, 30, 10);
3237                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3238                                 print chop_str($text, 80, 5) . "<br/>\n";
3239                         }
3240                 }
3241                 print "</td>\n" .
3242                       "<td class=\"link\">" .
3243                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3244                       " | " .
3245                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3246                 print "</td>\n" .
3247                       "</tr>\n";
3248         }
3249         if (defined $extra) {
3250                 print "<tr>\n" .
3251                       "<td colspan=\"3\">$extra</td>\n" .
3252                       "</tr>\n";
3253         }
3254         print "</table>\n";
3255 }
3256
3257 ## ======================================================================
3258 ## ======================================================================
3259 ## actions
3260
3261 sub git_project_list {
3262         my $order = $cgi->param('o');
3263         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3264                 die_error(undef, "Unknown order parameter");
3265         }
3266
3267         my @list = git_get_projects_list();
3268         if (!@list) {
3269                 die_error(undef, "No projects found");
3270         }
3271
3272         git_header_html();
3273         if (-f $home_text) {
3274                 print "<div class=\"index_include\">\n";
3275                 open (my $fd, $home_text);
3276                 print <$fd>;
3277                 close $fd;
3278                 print "</div>\n";
3279         }
3280         git_project_list_body(\@list, $order);
3281         git_footer_html();
3282 }
3283
3284 sub git_forks {
3285         my $order = $cgi->param('o');
3286         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3287                 die_error(undef, "Unknown order parameter");
3288         }
3289
3290         my @list = git_get_projects_list($project);
3291         if (!@list) {
3292                 die_error(undef, "No forks found");
3293         }
3294
3295         git_header_html();
3296         git_print_page_nav('','');
3297         git_print_header_div('summary', "$project forks");
3298         git_project_list_body(\@list, $order);
3299         git_footer_html();
3300 }
3301
3302 sub git_project_index {
3303         my @projects = git_get_projects_list($project);
3304
3305         print $cgi->header(
3306                 -type => 'text/plain',
3307                 -charset => 'utf-8',
3308                 -content_disposition => 'inline; filename="index.aux"');
3309
3310         foreach my $pr (@projects) {
3311                 if (!exists $pr->{'owner'}) {
3312                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3313                 }
3314
3315                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3316                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3317                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3318                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3319                 $path  =~ s/ /\+/g;
3320                 $owner =~ s/ /\+/g;
3321
3322                 print "$path $owner\n";
3323         }
3324 }
3325
3326 sub git_summary {
3327         my $descr = git_get_project_description($project) || "none";
3328         my %co = parse_commit("HEAD");
3329         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3330         my $head = $co{'id'};
3331
3332         my $owner = git_get_project_owner($project);
3333
3334         my $refs = git_get_references();
3335         # These get_*_list functions return one more to allow us to see if
3336         # there are more ...
3337         my @taglist  = git_get_tags_list(16);
3338         my @headlist = git_get_heads_list(16);
3339         my @forklist;
3340         my ($check_forks) = gitweb_check_feature('forks');
3341
3342         if ($check_forks) {
3343                 @forklist = git_get_projects_list($project);
3344         }
3345
3346         git_header_html();
3347         git_print_page_nav('summary','', $head);
3348
3349         print "<div class=\"title\">&nbsp;</div>\n";
3350         print "<table cellspacing=\"0\">\n" .
3351               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3352               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3353               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3354         # use per project git URL list in $projectroot/$project/cloneurl
3355         # or make project git URL from git base URL and project name
3356         my $url_tag = "URL";
3357         my @url_list = git_get_project_url_list($project);
3358         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3359         foreach my $git_url (@url_list) {
3360                 next unless $git_url;
3361                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3362                 $url_tag = "";
3363         }
3364         print "</table>\n";
3365
3366         if (-s "$projectroot/$project/README.html") {
3367                 if (open my $fd, "$projectroot/$project/README.html") {
3368                         print "<div class=\"title\">readme</div>\n";
3369                         print $_ while (<$fd>);
3370                         close $fd;
3371                 }
3372         }
3373
3374         # we need to request one more than 16 (0..15) to check if
3375         # those 16 are all
3376         my @commitlist = parse_commits($head, 17);
3377         git_print_header_div('shortlog');
3378         git_shortlog_body(\@commitlist, 0, 15, $refs,
3379                           $#commitlist <=  15 ? undef :
3380                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3381
3382         if (@taglist) {
3383                 git_print_header_div('tags');
3384                 git_tags_body(\@taglist, 0, 15,
3385                               $#taglist <=  15 ? undef :
3386                               $cgi->a({-href => href(action=>"tags")}, "..."));
3387         }
3388
3389         if (@headlist) {
3390                 git_print_header_div('heads');
3391                 git_heads_body(\@headlist, $head, 0, 15,
3392                                $#headlist <= 15 ? undef :
3393                                $cgi->a({-href => href(action=>"heads")}, "..."));
3394         }
3395
3396         if (@forklist) {
3397                 git_print_header_div('forks');
3398                 git_project_list_body(\@forklist, undef, 0, 15,
3399                                       $#forklist <= 15 ? undef :
3400                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3401                                       'noheader');
3402         }
3403
3404         git_footer_html();
3405 }
3406
3407 sub git_tag {
3408         my $head = git_get_head_hash($project);
3409         git_header_html();
3410         git_print_page_nav('','', $head,undef,$head);
3411         my %tag = parse_tag($hash);
3412         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3413         print "<div class=\"title_text\">\n" .
3414               "<table cellspacing=\"0\">\n" .
3415               "<tr>\n" .
3416               "<td>object</td>\n" .
3417               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3418                                $tag{'object'}) . "</td>\n" .
3419               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3420                                               $tag{'type'}) . "</td>\n" .
3421               "</tr>\n";
3422         if (defined($tag{'author'})) {
3423                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3424                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3425                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3426                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3427                         "</td></tr>\n";
3428         }
3429         print "</table>\n\n" .
3430               "</div>\n";
3431         print "<div class=\"page_body\">";
3432         my $comment = $tag{'comment'};
3433         foreach my $line (@$comment) {
3434                 chomp $line;
3435                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3436         }
3437         print "</div>\n";
3438         git_footer_html();
3439 }
3440
3441 sub git_blame2 {
3442         my $fd;
3443         my $ftype;
3444
3445         my ($have_blame) = gitweb_check_feature('blame');
3446         if (!$have_blame) {
3447                 die_error('403 Permission denied', "Permission denied");
3448         }
3449         die_error('404 Not Found', "File name not defined") if (!$file_name);
3450         $hash_base ||= git_get_head_hash($project);
3451         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3452         my %co = parse_commit($hash_base)
3453                 or die_error(undef, "Reading commit failed");
3454         if (!defined $hash) {
3455                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3456                         or die_error(undef, "Error looking up file");
3457         }
3458         $ftype = git_get_type($hash);
3459         if ($ftype !~ "blob") {
3460                 die_error('400 Bad Request', "Object is not a blob");
3461         }
3462         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3463               $file_name, $hash_base)
3464                 or die_error(undef, "Open git-blame failed");
3465         git_header_html();
3466         my $formats_nav =
3467                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3468                         "blob") .
3469                 " | " .
3470                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3471                         "history") .
3472                 " | " .
3473                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3474                         "HEAD");
3475         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3476         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3477         git_print_page_path($file_name, $ftype, $hash_base);
3478         my @rev_color = (qw(light2 dark2));
3479         my $num_colors = scalar(@rev_color);
3480         my $current_color = 0;
3481         my $last_rev;
3482         print <<HTML;
3483 <div class="page_body">
3484 <table class="blame">
3485 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3486 HTML
3487         my %metainfo = ();
3488         while (1) {
3489                 $_ = <$fd>;
3490                 last unless defined $_;
3491                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3492                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3493                 if (!exists $metainfo{$full_rev}) {
3494                         $metainfo{$full_rev} = {};
3495                 }
3496                 my $meta = $metainfo{$full_rev};
3497                 while (<$fd>) {
3498                         last if (s/^\t//);
3499                         if (/^(\S+) (.*)$/) {
3500                                 $meta->{$1} = $2;
3501                         }
3502                 }
3503                 my $data = $_;
3504                 chomp $data;
3505                 my $rev = substr($full_rev, 0, 8);
3506                 my $author = $meta->{'author'};
3507                 my %date = parse_date($meta->{'author-time'},
3508                                       $meta->{'author-tz'});
3509                 my $date = $date{'iso-tz'};
3510                 if ($group_size) {
3511                         $current_color = ++$current_color % $num_colors;
3512                 }
3513                 print "<tr class=\"$rev_color[$current_color]\">\n";
3514                 if ($group_size) {
3515                         print "<td class=\"sha1\"";
3516                         print " title=\"". esc_html($author) . ", $date\"";
3517                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3518                         print ">";
3519                         print $cgi->a({-href => href(action=>"commit",
3520                                                      hash=>$full_rev,
3521                                                      file_name=>$file_name)},
3522                                       esc_html($rev));
3523                         print "</td>\n";
3524                 }
3525                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3526                         or die_error(undef, "Open git-rev-parse failed");
3527                 my $parent_commit = <$dd>;
3528                 close $dd;
3529                 chomp($parent_commit);
3530                 my $blamed = href(action => 'blame',
3531                                   file_name => $meta->{'filename'},
3532                                   hash_base => $parent_commit);
3533                 print "<td class=\"linenr\">";
3534                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3535                                 -id => "l$lineno",
3536                                 -class => "linenr" },
3537                               esc_html($lineno));
3538                 print "</td>";
3539                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3540                 print "</tr>\n";
3541         }
3542         print "</table>\n";
3543         print "</div>";
3544         close $fd
3545                 or print "Reading blob failed\n";
3546         git_footer_html();
3547 }
3548
3549 sub git_blame {
3550         my $fd;
3551
3552         my ($have_blame) = gitweb_check_feature('blame');
3553         if (!$have_blame) {
3554                 die_error('403 Permission denied', "Permission denied");
3555         }
3556         die_error('404 Not Found', "File name not defined") if (!$file_name);
3557         $hash_base ||= git_get_head_hash($project);
3558         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3559         my %co = parse_commit($hash_base)
3560                 or die_error(undef, "Reading commit failed");
3561         if (!defined $hash) {
3562                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3563                         or die_error(undef, "Error lookup file");
3564         }
3565         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3566                 or die_error(undef, "Open git-annotate failed");
3567         git_header_html();
3568         my $formats_nav =
3569                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3570                         "blob") .
3571                 " | " .
3572                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3573                         "history") .
3574                 " | " .
3575                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3576                         "HEAD");
3577         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3578         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3579         git_print_page_path($file_name, 'blob', $hash_base);
3580         print "<div class=\"page_body\">\n";
3581         print <<HTML;
3582 <table class="blame">
3583   <tr>
3584     <th>Commit</th>
3585     <th>Age</th>
3586     <th>Author</th>
3587     <th>Line</th>
3588     <th>Data</th>
3589   </tr>
3590 HTML
3591         my @line_class = (qw(light dark));
3592         my $line_class_len = scalar (@line_class);
3593         my $line_class_num = $#line_class;
3594         while (my $line = <$fd>) {
3595                 my $long_rev;
3596                 my $short_rev;
3597                 my $author;
3598                 my $time;
3599                 my $lineno;
3600                 my $data;
3601                 my $age;
3602                 my $age_str;
3603                 my $age_class;
3604
3605                 chomp $line;
3606                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3607
3608                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3609                         $long_rev = $1;
3610                         $author   = $2;
3611                         $time     = $3;
3612                         $lineno   = $4;
3613                         $data     = $5;
3614                 } else {
3615                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3616                         next;
3617                 }
3618                 $short_rev  = substr ($long_rev, 0, 8);
3619                 $age        = time () - $time;
3620                 $age_str    = age_string ($age);
3621                 $age_str    =~ s/ /&nbsp;/g;
3622                 $age_class  = age_class($age);
3623                 $author     = esc_html ($author);
3624                 $author     =~ s/ /&nbsp;/g;
3625
3626                 $data = untabify($data);
3627                 $data = esc_html ($data);
3628
3629                 print <<HTML;
3630   <tr class="$line_class[$line_class_num]">
3631     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3632     <td class="$age_class">$age_str</td>
3633     <td>$author</td>
3634     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3635     <td class="pre">$data</td>
3636   </tr>
3637 HTML
3638         } # while (my $line = <$fd>)
3639         print "</table>\n\n";
3640         close $fd
3641                 or print "Reading blob failed.\n";
3642         print "</div>";
3643         git_footer_html();
3644 }
3645
3646 sub git_tags {
3647         my $head = git_get_head_hash($project);
3648         git_header_html();
3649         git_print_page_nav('','', $head,undef,$head);
3650         git_print_header_div('summary', $project);
3651
3652         my @tagslist = git_get_tags_list();
3653         if (@tagslist) {
3654                 git_tags_body(\@tagslist);
3655         }
3656         git_footer_html();
3657 }
3658
3659 sub git_heads {
3660         my $head = git_get_head_hash($project);
3661         git_header_html();
3662         git_print_page_nav('','', $head,undef,$head);
3663         git_print_header_div('summary', $project);
3664
3665         my @headslist = git_get_heads_list();
3666         if (@headslist) {
3667                 git_heads_body(\@headslist, $head);
3668         }
3669         git_footer_html();
3670 }
3671
3672 sub git_blob_plain {
3673         my $expires;
3674
3675         if (!defined $hash) {
3676                 if (defined $file_name) {
3677                         my $base = $hash_base || git_get_head_hash($project);
3678                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3679                                 or die_error(undef, "Error lookup file");
3680                 } else {
3681                         die_error(undef, "No file name defined");
3682                 }
3683         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3684                 # blobs defined by non-textual hash id's can be cached
3685                 $expires = "+1d";
3686         }
3687
3688         my $type = shift;
3689         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3690                 or die_error(undef, "Couldn't cat $file_name, $hash");
3691
3692         $type ||= blob_mimetype($fd, $file_name);
3693
3694         # save as filename, even when no $file_name is given
3695         my $save_as = "$hash";
3696         if (defined $file_name) {
3697                 $save_as = $file_name;
3698         } elsif ($type =~ m/^text\//) {
3699                 $save_as .= '.txt';
3700         }
3701
3702         print $cgi->header(
3703                 -type => "$type",
3704                 -expires=>$expires,
3705                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3706         undef $/;
3707         binmode STDOUT, ':raw';
3708         print <$fd>;
3709         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3710         $/ = "\n";
3711         close $fd;
3712 }
3713
3714 sub git_blob {
3715         my $expires;
3716
3717         if (!defined $hash) {
3718                 if (defined $file_name) {
3719                         my $base = $hash_base || git_get_head_hash($project);
3720                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3721                                 or die_error(undef, "Error lookup file");
3722                 } else {
3723                         die_error(undef, "No file name defined");
3724                 }
3725         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3726                 # blobs defined by non-textual hash id's can be cached
3727                 $expires = "+1d";
3728         }
3729
3730         my ($have_blame) = gitweb_check_feature('blame');
3731         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3732                 or die_error(undef, "Couldn't cat $file_name, $hash");
3733         my $mimetype = blob_mimetype($fd, $file_name);
3734         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3735                 close $fd;
3736                 return git_blob_plain($mimetype);
3737         }
3738         # we can have blame only for text/* mimetype
3739         $have_blame &&= ($mimetype =~ m!^text/!);
3740
3741         git_header_html(undef, $expires);
3742         my $formats_nav = '';
3743         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3744                 if (defined $file_name) {
3745                         if ($have_blame) {
3746                                 $formats_nav .=
3747                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3748                                                                hash=>$hash, file_name=>$file_name)},
3749                                                 "blame") .
3750                                         " | ";
3751                         }
3752                         $formats_nav .=
3753                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3754                                                        hash=>$hash, file_name=>$file_name)},
3755                                         "history") .
3756                                 " | " .
3757                                 $cgi->a({-href => href(action=>"blob_plain",
3758                                                        hash=>$hash, file_name=>$file_name)},
3759                                         "raw") .
3760                                 " | " .
3761                                 $cgi->a({-href => href(action=>"blob",
3762                                                        hash_base=>"HEAD", file_name=>$file_name)},
3763                                         "HEAD");
3764                 } else {
3765                         $formats_nav .=
3766                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3767                 }
3768                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3769                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3770         } else {
3771                 print "<div class=\"page_nav\">\n" .
3772                       "<br/><br/></div>\n" .
3773                       "<div class=\"title\">$hash</div>\n";
3774         }
3775         git_print_page_path($file_name, "blob", $hash_base);
3776         print "<div class=\"page_body\">\n";
3777         if ($mimetype =~ m!^text/!) {
3778                 my $nr;
3779                 while (my $line = <$fd>) {
3780                         chomp $line;
3781                         $nr++;
3782                         $line = untabify($line);
3783                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3784                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3785                 }
3786         } elsif ($mimetype =~ m!^image/!) {
3787                 print qq!<img type="$mimetype"!;
3788                 if ($file_name) {
3789                         print qq! alt="$file_name" title="$file_name"!;
3790                 }
3791                 print qq! src="! .
3792                       href(action=>"blob_plain", hash=>$hash,
3793                            hash_base=>$hash_base, file_name=>$file_name) .
3794                       qq!" />\n!;
3795         }
3796         close $fd
3797                 or print "Reading blob failed.\n";
3798         print "</div>";
3799         git_footer_html();
3800 }
3801
3802 sub git_tree {
3803         my $have_snapshot = gitweb_have_snapshot();
3804
3805         if (!defined $hash_base) {
3806                 $hash_base = "HEAD";
3807         }
3808         if (!defined $hash) {
3809                 if (defined $file_name) {
3810                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3811                 } else {
3812                         $hash = $hash_base;
3813                 }
3814         }
3815         $/ = "\0";
3816         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3817                 or die_error(undef, "Open git-ls-tree failed");
3818         my @entries = map { chomp; $_ } <$fd>;
3819         close $fd or die_error(undef, "Reading tree failed");
3820         $/ = "\n";
3821
3822         my $refs = git_get_references();
3823         my $ref = format_ref_marker($refs, $hash_base);
3824         git_header_html();
3825         my $basedir = '';
3826         my ($have_blame) = gitweb_check_feature('blame');
3827         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3828                 my @views_nav = ();
3829                 if (defined $file_name) {
3830                         push @views_nav,
3831                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3832                                                        hash=>$hash, file_name=>$file_name)},
3833                                         "history"),
3834                                 $cgi->a({-href => href(action=>"tree",
3835                                                        hash_base=>"HEAD", file_name=>$file_name)},
3836                                         "HEAD"),
3837                 }
3838                 if ($have_snapshot) {
3839                         # FIXME: Should be available when we have no hash base as well.
3840                         push @views_nav,
3841                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3842                                         "snapshot");
3843                 }
3844                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3845                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3846         } else {
3847                 undef $hash_base;
3848                 print "<div class=\"page_nav\">\n";
3849                 print "<br/><br/></div>\n";
3850                 print "<div class=\"title\">$hash</div>\n";
3851         }
3852         if (defined $file_name) {
3853                 $basedir = $file_name;
3854                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3855                         $basedir .= '/';
3856                 }
3857         }
3858         git_print_page_path($file_name, 'tree', $hash_base);
3859         print "<div class=\"page_body\">\n";
3860         print "<table cellspacing=\"0\">\n";
3861         my $alternate = 1;
3862         # '..' (top directory) link if possible
3863         if (defined $hash_base &&
3864             defined $file_name && $file_name =~ m![^/]+$!) {
3865                 if ($alternate) {
3866                         print "<tr class=\"dark\">\n";
3867                 } else {
3868                         print "<tr class=\"light\">\n";
3869                 }
3870                 $alternate ^= 1;
3871
3872                 my $up = $file_name;
3873                 $up =~ s!/?[^/]+$!!;
3874                 undef $up unless $up;
3875                 # based on git_print_tree_entry
3876                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3877                 print '<td class="list">';
3878                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3879                                              file_name=>$up)},
3880                               "..");
3881                 print "</td>\n";
3882                 print "<td class=\"link\"></td>\n";
3883
3884                 print "</tr>\n";
3885         }
3886         foreach my $line (@entries) {
3887                 my %t = parse_ls_tree_line($line, -z => 1);
3888
3889                 if ($alternate) {
3890                         print "<tr class=\"dark\">\n";
3891                 } else {
3892                         print "<tr class=\"light\">\n";
3893                 }
3894                 $alternate ^= 1;
3895
3896                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3897
3898                 print "</tr>\n";
3899         }
3900         print "</table>\n" .
3901               "</div>";
3902         git_footer_html();
3903 }
3904
3905 sub git_snapshot {
3906         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3907         my $have_snapshot = (defined $ctype && defined $suffix);
3908         if (!$have_snapshot) {
3909                 die_error('403 Permission denied', "Permission denied");
3910         }
3911
3912         if (!defined $hash) {
3913                 $hash = git_get_head_hash($project);
3914         }
3915
3916         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3917
3918         print $cgi->header(
3919                 -type => "application/$ctype",
3920                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3921                 -status => '200 OK');
3922
3923         my $git = git_cmd_str();
3924         my $name = $project;
3925         $name =~ s/\047/\047\\\047\047/g;
3926         open my $fd, "-|",
3927                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3928                 or die_error(undef, "Execute git-tar-tree failed");
3929         binmode STDOUT, ':raw';
3930         print <$fd>;
3931         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3932         close $fd;
3933
3934 }
3935
3936 sub git_log {
3937         my $head = git_get_head_hash($project);
3938         if (!defined $hash) {
3939                 $hash = $head;
3940         }
3941         if (!defined $page) {
3942                 $page = 0;
3943         }
3944         my $refs = git_get_references();
3945
3946         my @commitlist = parse_commits($hash, 101, (100 * $page));
3947
3948         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3949
3950         git_header_html();
3951         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3952
3953         if (!@commitlist) {
3954                 my %co = parse_commit($hash);
3955
3956                 git_print_header_div('summary', $project);
3957                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3958         }
3959         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3960         for (my $i = 0; $i <= $to; $i++) {
3961                 my %co = %{$commitlist[$i]};
3962                 next if !%co;
3963                 my $commit = $co{'id'};
3964                 my $ref = format_ref_marker($refs, $commit);
3965                 my %ad = parse_date($co{'author_epoch'});
3966                 git_print_header_div('commit',
3967                                "<span class=\"age\">$co{'age_string'}</span>" .
3968                                esc_html($co{'title'}) . $ref,
3969                                $commit);
3970                 print "<div class=\"title_text\">\n" .
3971                       "<div class=\"log_link\">\n" .
3972                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3973                       " | " .
3974                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3975                       " | " .
3976                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3977                       "<br/>\n" .
3978                       "</div>\n" .
3979                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3980                       "</div>\n";
3981
3982                 print "<div class=\"log_body\">\n";
3983                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3984                 print "</div>\n";
3985         }
3986         if ($#commitlist >= 100) {
3987                 print "<div class=\"page_nav\">\n";
3988                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3989                                -accesskey => "n", -title => "Alt-n"}, "next");
3990                 print "</div>\n";
3991         }
3992         git_footer_html();
3993 }
3994
3995 sub git_commit {
3996         $hash ||= $hash_base || "HEAD";
3997         my %co = parse_commit($hash);
3998         if (!%co) {
3999                 die_error(undef, "Unknown commit object");
4000         }
4001         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4002         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4003
4004         my $parent  = $co{'parent'};
4005         my $parents = $co{'parents'}; # listref
4006
4007         # we need to prepare $formats_nav before any parameter munging
4008         my $formats_nav;
4009         if (!defined $parent) {
4010                 # --root commitdiff
4011                 $formats_nav .= '(initial)';
4012         } elsif (@$parents == 1) {
4013                 # single parent commit
4014                 $formats_nav .=
4015                         '(parent: ' .
4016                         $cgi->a({-href => href(action=>"commit",
4017                                                hash=>$parent)},
4018                                 esc_html(substr($parent, 0, 7))) .
4019                         ')';
4020         } else {
4021                 # merge commit
4022                 $formats_nav .=
4023                         '(merge: ' .
4024                         join(' ', map {
4025                                 $cgi->a({-href => href(action=>"commit",
4026                                                        hash=>$_)},
4027                                         esc_html(substr($_, 0, 7)));
4028                         } @$parents ) .
4029                         ')';
4030         }
4031
4032         if (!defined $parent) {
4033                 $parent = "--root";
4034         }
4035         my @difftree;
4036         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4037                 @diff_opts,
4038                 (@$parents <= 1 ? $parent : '-c'),
4039                 $hash, "--"
4040                 or die_error(undef, "Open git-diff-tree failed");
4041         @difftree = map { chomp; $_ } <$fd>;
4042         close $fd or die_error(undef, "Reading git-diff-tree failed");
4043
4044         # non-textual hash id's can be cached
4045         my $expires;
4046         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4047                 $expires = "+1d";
4048         }
4049         my $refs = git_get_references();
4050         my $ref = format_ref_marker($refs, $co{'id'});
4051
4052         my $have_snapshot = gitweb_have_snapshot();
4053
4054         git_header_html(undef, $expires);
4055         git_print_page_nav('commit', '',
4056                            $hash, $co{'tree'}, $hash,
4057                            $formats_nav);
4058
4059         if (defined $co{'parent'}) {
4060                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4061         } else {
4062                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4063         }
4064         print "<div class=\"title_text\">\n" .
4065               "<table cellspacing=\"0\">\n";
4066         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4067               "<tr>" .
4068               "<td></td><td> $ad{'rfc2822'}";
4069         if ($ad{'hour_local'} < 6) {
4070                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4071                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4072         } else {
4073                 printf(" (%02d:%02d %s)",
4074                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4075         }
4076         print "</td>" .
4077               "</tr>\n";
4078         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4079         print "<tr><td></td><td> $cd{'rfc2822'}" .
4080               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4081               "</td></tr>\n";
4082         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4083         print "<tr>" .
4084               "<td>tree</td>" .
4085               "<td class=\"sha1\">" .
4086               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4087                        class => "list"}, $co{'tree'}) .
4088               "</td>" .
4089               "<td class=\"link\">" .
4090               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4091                       "tree");
4092         if ($have_snapshot) {
4093                 print " | " .
4094                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4095         }
4096         print "</td>" .
4097               "</tr>\n";
4098
4099         foreach my $par (@$parents) {
4100                 print "<tr>" .
4101                       "<td>parent</td>" .
4102                       "<td class=\"sha1\">" .
4103                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4104                                class => "list"}, $par) .
4105                       "</td>" .
4106                       "<td class=\"link\">" .
4107                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4108                       " | " .
4109                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4110                       "</td>" .
4111                       "</tr>\n";
4112         }
4113         print "</table>".
4114               "</div>\n";
4115
4116         print "<div class=\"page_body\">\n";
4117         git_print_log($co{'comment'});
4118         print "</div>\n";
4119
4120         git_difftree_body(\@difftree, $hash, @$parents);
4121
4122         git_footer_html();
4123 }
4124
4125 sub git_object {
4126         # object is defined by:
4127         # - hash or hash_base alone
4128         # - hash_base and file_name
4129         my $type;
4130
4131         # - hash or hash_base alone
4132         if ($hash || ($hash_base && !defined $file_name)) {
4133                 my $object_id = $hash || $hash_base;
4134
4135                 my $git_command = git_cmd_str();
4136                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4137                         or die_error('404 Not Found', "Object does not exist");
4138                 $type = <$fd>;
4139                 chomp $type;
4140                 close $fd
4141                         or die_error('404 Not Found', "Object does not exist");
4142
4143         # - hash_base and file_name
4144         } elsif ($hash_base && defined $file_name) {
4145                 $file_name =~ s,/+$,,;
4146
4147                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4148                         or die_error('404 Not Found', "Base object does not exist");
4149
4150                 # here errors should not hapen
4151                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4152                         or die_error(undef, "Open git-ls-tree failed");
4153                 my $line = <$fd>;
4154                 close $fd;
4155
4156                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4157                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4158                         die_error('404 Not Found', "File or directory for given base does not exist");
4159                 }
4160                 $type = $2;
4161                 $hash = $3;
4162         } else {
4163                 die_error('404 Not Found', "Not enough information to find object");
4164         }
4165
4166         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4167                                           hash=>$hash, hash_base=>$hash_base,
4168                                           file_name=>$file_name),
4169                              -status => '302 Found');
4170 }
4171
4172 sub git_blobdiff {
4173         my $format = shift || 'html';
4174
4175         my $fd;
4176         my @difftree;
4177         my %diffinfo;
4178         my $expires;
4179
4180         # preparing $fd and %diffinfo for git_patchset_body
4181         # new style URI
4182         if (defined $hash_base && defined $hash_parent_base) {
4183                 if (defined $file_name) {
4184                         # read raw output
4185                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4186                                 $hash_parent_base, $hash_base,
4187                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4188                                 or die_error(undef, "Open git-diff-tree failed");
4189                         @difftree = map { chomp; $_ } <$fd>;
4190                         close $fd
4191                                 or die_error(undef, "Reading git-diff-tree failed");
4192                         @difftree
4193                                 or die_error('404 Not Found', "Blob diff not found");
4194
4195                 } elsif (defined $hash &&
4196                          $hash =~ /[0-9a-fA-F]{40}/) {
4197                         # try to find filename from $hash
4198
4199                         # read filtered raw output
4200                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4201                                 $hash_parent_base, $hash_base, "--"
4202                                 or die_error(undef, "Open git-diff-tree failed");
4203                         @difftree =
4204                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4205                                 # $hash == to_id
4206                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4207                                 map { chomp; $_ } <$fd>;
4208                         close $fd
4209                                 or die_error(undef, "Reading git-diff-tree failed");
4210                         @difftree
4211                                 or die_error('404 Not Found', "Blob diff not found");
4212
4213                 } else {
4214                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4215                 }
4216
4217                 if (@difftree > 1) {
4218                         die_error('404 Not Found', "Ambiguous blob diff specification");
4219                 }
4220
4221                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4222                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4223                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4224
4225                 $hash_parent ||= $diffinfo{'from_id'};
4226                 $hash        ||= $diffinfo{'to_id'};
4227
4228                 # non-textual hash id's can be cached
4229                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4230                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4231                         $expires = '+1d';
4232                 }
4233
4234                 # open patch output
4235                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4236                         '-p', ($format eq 'html' ? "--full-index" : ()),
4237                         $hash_parent_base, $hash_base,
4238                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4239                         or die_error(undef, "Open git-diff-tree failed");
4240         }
4241
4242         # old/legacy style URI
4243         if (!%diffinfo && # if new style URI failed
4244             defined $hash && defined $hash_parent) {
4245                 # fake git-diff-tree raw output
4246                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4247                 $diffinfo{'from_id'} = $hash_parent;
4248                 $diffinfo{'to_id'}   = $hash;
4249                 if (defined $file_name) {
4250                         if (defined $file_parent) {
4251                                 $diffinfo{'status'} = '2';
4252                                 $diffinfo{'from_file'} = $file_parent;
4253                                 $diffinfo{'to_file'}   = $file_name;
4254                         } else { # assume not renamed
4255                                 $diffinfo{'status'} = '1';
4256                                 $diffinfo{'from_file'} = $file_name;
4257                                 $diffinfo{'to_file'}   = $file_name;
4258                         }
4259                 } else { # no filename given
4260                         $diffinfo{'status'} = '2';
4261                         $diffinfo{'from_file'} = $hash_parent;
4262                         $diffinfo{'to_file'}   = $hash;
4263                 }
4264
4265                 # non-textual hash id's can be cached
4266                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4267                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4268                         $expires = '+1d';
4269                 }
4270
4271                 # open patch output
4272                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4273                         '-p', ($format eq 'html' ? "--full-index" : ()),
4274                         $hash_parent, $hash, "--"
4275                         or die_error(undef, "Open git-diff failed");
4276         } else  {
4277                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4278                         unless %diffinfo;
4279         }
4280
4281         # header
4282         if ($format eq 'html') {
4283                 my $formats_nav =
4284                         $cgi->a({-href => href(action=>"blobdiff_plain",
4285                                                hash=>$hash, hash_parent=>$hash_parent,
4286                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4287                                                file_name=>$file_name, file_parent=>$file_parent)},
4288                                 "raw");
4289                 git_header_html(undef, $expires);
4290                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4291                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4292                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4293                 } else {
4294                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4295                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4296                 }
4297                 if (defined $file_name) {
4298                         git_print_page_path($file_name, "blob", $hash_base);
4299                 } else {
4300                         print "<div class=\"page_path\"></div>\n";
4301                 }
4302
4303         } elsif ($format eq 'plain') {
4304                 print $cgi->header(
4305                         -type => 'text/plain',
4306                         -charset => 'utf-8',
4307                         -expires => $expires,
4308                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4309
4310                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4311
4312         } else {
4313                 die_error(undef, "Unknown blobdiff format");
4314         }
4315
4316         # patch
4317         if ($format eq 'html') {
4318                 print "<div class=\"page_body\">\n";
4319
4320                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4321                 close $fd;
4322
4323                 print "</div>\n"; # class="page_body"
4324                 git_footer_html();
4325
4326         } else {
4327                 while (my $line = <$fd>) {
4328                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4329                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4330
4331                         print $line;
4332
4333                         last if $line =~ m!^\+\+\+!;
4334                 }
4335                 local $/ = undef;
4336                 print <$fd>;
4337                 close $fd;
4338         }
4339 }
4340
4341 sub git_blobdiff_plain {
4342         git_blobdiff('plain');
4343 }
4344
4345 sub git_commitdiff {
4346         my $format = shift || 'html';
4347         $hash ||= $hash_base || "HEAD";
4348         my %co = parse_commit($hash);
4349         if (!%co) {
4350                 die_error(undef, "Unknown commit object");
4351         }
4352
4353         # we need to prepare $formats_nav before any parameter munging
4354         my $formats_nav;
4355         if ($format eq 'html') {
4356                 $formats_nav =
4357                         $cgi->a({-href => href(action=>"commitdiff_plain",
4358                                                hash=>$hash, hash_parent=>$hash_parent)},
4359                                 "raw");
4360
4361                 if (defined $hash_parent) {
4362                         # commitdiff with two commits given
4363                         my $hash_parent_short = $hash_parent;
4364                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4365                                 $hash_parent_short = substr($hash_parent, 0, 7);
4366                         }
4367                         $formats_nav .=
4368                                 ' (from: ' .
4369                                 $cgi->a({-href => href(action=>"commitdiff",
4370                                                        hash=>$hash_parent)},
4371                                         esc_html($hash_parent_short)) .
4372                                 ')';
4373                 } elsif (!$co{'parent'}) {
4374                         # --root commitdiff
4375                         $formats_nav .= ' (initial)';
4376                 } elsif (scalar @{$co{'parents'}} == 1) {
4377                         # single parent commit
4378                         $formats_nav .=
4379                                 ' (parent: ' .
4380                                 $cgi->a({-href => href(action=>"commitdiff",
4381                                                        hash=>$co{'parent'})},
4382                                         esc_html(substr($co{'parent'}, 0, 7))) .
4383                                 ')';
4384                 } else {
4385                         # merge commit
4386                         $formats_nav .=
4387                                 ' (merge: ' .
4388                                 join(' ', map {
4389                                         $cgi->a({-href => href(action=>"commitdiff",
4390                                                                hash=>$_)},
4391                                                 esc_html(substr($_, 0, 7)));
4392                                 } @{$co{'parents'}} ) .
4393                                 ')';
4394                 }
4395         }
4396
4397         my $hash_parent_param = $hash_parent;
4398         if (!defined $hash_parent) {
4399                 $hash_parent_param =
4400                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4401         }
4402
4403         # read commitdiff
4404         my $fd;
4405         my @difftree;
4406         if ($format eq 'html') {
4407                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4408                         "--no-commit-id", "--patch-with-raw", "--full-index",
4409                         $hash_parent_param, $hash, "--"
4410                         or die_error(undef, "Open git-diff-tree failed");
4411
4412                 while (my $line = <$fd>) {
4413                         chomp $line;
4414                         # empty line ends raw part of diff-tree output
4415                         last unless $line;
4416                         push @difftree, scalar parse_difftree_raw_line($line);
4417                 }
4418
4419         } elsif ($format eq 'plain') {
4420                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4421                         '-p', $hash_parent_param, $hash, "--"
4422                         or die_error(undef, "Open git-diff-tree failed");
4423
4424         } else {
4425                 die_error(undef, "Unknown commitdiff format");
4426         }
4427
4428         # non-textual hash id's can be cached
4429         my $expires;
4430         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4431                 $expires = "+1d";
4432         }
4433
4434         # write commit message
4435         if ($format eq 'html') {
4436                 my $refs = git_get_references();
4437                 my $ref = format_ref_marker($refs, $co{'id'});
4438
4439                 git_header_html(undef, $expires);
4440                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4441                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4442                 git_print_authorship(\%co);
4443                 print "<div class=\"page_body\">\n";
4444                 if (@{$co{'comment'}} > 1) {
4445                         print "<div class=\"log\">\n";
4446                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4447                         print "</div>\n"; # class="log"
4448                 }
4449
4450         } elsif ($format eq 'plain') {
4451                 my $refs = git_get_references("tags");
4452                 my $tagname = git_get_rev_name_tags($hash);
4453                 my $filename = basename($project) . "-$hash.patch";
4454
4455                 print $cgi->header(
4456                         -type => 'text/plain',
4457                         -charset => 'utf-8',
4458                         -expires => $expires,
4459                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4460                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4461                 print <<TEXT;
4462 From: $co{'author'}
4463 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4464 Subject: $co{'title'}
4465 TEXT
4466                 print "X-Git-Tag: $tagname\n" if $tagname;
4467                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4468
4469                 foreach my $line (@{$co{'comment'}}) {
4470                         print "$line\n";
4471                 }
4472                 print "---\n\n";
4473         }
4474
4475         # write patch
4476         if ($format eq 'html') {
4477                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4478                 print "<br/>\n";
4479
4480                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4481                 close $fd;
4482                 print "</div>\n"; # class="page_body"
4483                 git_footer_html();
4484
4485         } elsif ($format eq 'plain') {
4486                 local $/ = undef;
4487                 print <$fd>;
4488                 close $fd
4489                         or print "Reading git-diff-tree failed\n";
4490         }
4491 }
4492
4493 sub git_commitdiff_plain {
4494         git_commitdiff('plain');
4495 }
4496
4497 sub git_history {
4498         if (!defined $hash_base) {
4499                 $hash_base = git_get_head_hash($project);
4500         }
4501         if (!defined $page) {
4502                 $page = 0;
4503         }
4504         my $ftype;
4505         my %co = parse_commit($hash_base);
4506         if (!%co) {
4507                 die_error(undef, "Unknown commit object");
4508         }
4509
4510         my $refs = git_get_references();
4511         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4512
4513         if (!defined $hash && defined $file_name) {
4514                 $hash = git_get_hash_by_path($hash_base, $file_name);
4515         }
4516         if (defined $hash) {
4517                 $ftype = git_get_type($hash);
4518         }
4519
4520         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4521
4522         my $paging_nav = '';
4523         if ($page > 0) {
4524                 $paging_nav .=
4525                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4526                                                file_name=>$file_name)},
4527                                 "first");
4528                 $paging_nav .= " &sdot; " .
4529                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4530                                                file_name=>$file_name, page=>$page-1),
4531                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4532         } else {
4533                 $paging_nav .= "first";
4534                 $paging_nav .= " &sdot; prev";
4535         }
4536         if ($#commitlist >= 100) {
4537                 $paging_nav .= " &sdot; " .
4538                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4539                                                file_name=>$file_name, page=>$page+1),
4540                                  -accesskey => "n", -title => "Alt-n"}, "next");
4541         } else {
4542                 $paging_nav .= " &sdot; next";
4543         }
4544         my $next_link = '';
4545         if ($#commitlist >= 100) {
4546                 $next_link =
4547                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4548                                                file_name=>$file_name, page=>$page+1),
4549                                  -accesskey => "n", -title => "Alt-n"}, "next");
4550         }
4551
4552         git_header_html();
4553         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4554         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4555         git_print_page_path($file_name, $ftype, $hash_base);
4556
4557         git_history_body(\@commitlist, 0, 99,
4558                          $refs, $hash_base, $ftype, $next_link);
4559
4560         git_footer_html();
4561 }
4562
4563 sub git_search {
4564         my ($have_search) = gitweb_check_feature('search');
4565         if (!$have_search) {
4566                 die_error('403 Permission denied', "Permission denied");
4567         }
4568         if (!defined $searchtext) {
4569                 die_error(undef, "Text field empty");
4570         }
4571         if (!defined $hash) {
4572                 $hash = git_get_head_hash($project);
4573         }
4574         my %co = parse_commit($hash);
4575         if (!%co) {
4576                 die_error(undef, "Unknown commit object");
4577         }
4578         if (!defined $page) {
4579                 $page = 0;
4580         }
4581
4582         $searchtype ||= 'commit';
4583         if ($searchtype eq 'pickaxe') {
4584                 # pickaxe may take all resources of your box and run for several minutes
4585                 # with every query - so decide by yourself how public you make this feature
4586                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4587                 if (!$have_pickaxe) {
4588                         die_error('403 Permission denied', "Permission denied");
4589                 }
4590         }
4591
4592         git_header_html();
4593
4594         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4595                 my $greptype;
4596                 if ($searchtype eq 'commit') {
4597                         $greptype = "--grep=";
4598                 } elsif ($searchtype eq 'author') {
4599                         $greptype = "--author=";
4600                 } elsif ($searchtype eq 'committer') {
4601                         $greptype = "--committer=";
4602                 }
4603                 $greptype .= $searchtext;
4604                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4605
4606                 my $paging_nav = '';
4607                 if ($page > 0) {
4608                         $paging_nav .=
4609                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4610                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4611                                         "first");
4612                         $paging_nav .= " &sdot; " .
4613                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4614                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4615                                                        page=>$page-1),
4616                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4617                 } else {
4618                         $paging_nav .= "first";
4619                         $paging_nav .= " &sdot; prev";
4620                 }
4621                 if ($#commitlist >= 100) {
4622                         $paging_nav .= " &sdot; " .
4623                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4624                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4625                                                        page=>$page+1),
4626                                          -accesskey => "n", -title => "Alt-n"}, "next");
4627                 } else {
4628                         $paging_nav .= " &sdot; next";
4629                 }
4630                 my $next_link = '';
4631                 if ($#commitlist >= 100) {
4632                         $next_link =
4633                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4634                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4635                                                        page=>$page+1),
4636                                          -accesskey => "n", -title => "Alt-n"}, "next");
4637                 }
4638
4639                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4640                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4641                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4642         }
4643
4644         if ($searchtype eq 'pickaxe') {
4645                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4646                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4647
4648                 print "<table cellspacing=\"0\">\n";
4649                 my $alternate = 1;
4650                 $/ = "\n";
4651                 my $git_command = git_cmd_str();
4652                 open my $fd, "-|", "$git_command rev-list $hash | " .
4653                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4654                 undef %co;
4655                 my @files;
4656                 while (my $line = <$fd>) {
4657                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4658                                 my %set;
4659                                 $set{'file'} = $6;
4660                                 $set{'from_id'} = $3;
4661                                 $set{'to_id'} = $4;
4662                                 $set{'id'} = $set{'to_id'};
4663                                 if ($set{'id'} =~ m/0{40}/) {
4664                                         $set{'id'} = $set{'from_id'};
4665                                 }
4666                                 if ($set{'id'} =~ m/0{40}/) {
4667                                         next;
4668                                 }
4669                                 push @files, \%set;
4670                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4671                                 if (%co) {
4672                                         if ($alternate) {
4673                                                 print "<tr class=\"dark\">\n";
4674                                         } else {
4675                                                 print "<tr class=\"light\">\n";
4676                                         }
4677                                         $alternate ^= 1;
4678                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4679                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4680                                               "<td>" .
4681                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4682                                                       -class => "list subject"},
4683                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4684                                         while (my $setref = shift @files) {
4685                                                 my %set = %$setref;
4686                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4687                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4688                                                               -class => "list"},
4689                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4690                                                       "<br/>\n";
4691                                         }
4692                                         print "</td>\n" .
4693                                               "<td class=\"link\">" .
4694                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4695                                               " | " .
4696                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4697                                         print "</td>\n" .
4698                                               "</tr>\n";
4699                                 }
4700                                 %co = parse_commit($1);
4701                         }
4702                 }
4703                 close $fd;
4704
4705                 print "</table>\n";
4706         }
4707         git_footer_html();
4708 }
4709
4710 sub git_search_help {
4711         git_header_html();
4712         git_print_page_nav('','', $hash,$hash,$hash);
4713         print <<EOT;
4714 <dl>
4715 <dt><b>commit</b></dt>
4716 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4717 <dt><b>author</b></dt>
4718 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4719 <dt><b>committer</b></dt>
4720 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4721 EOT
4722         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4723         if ($have_pickaxe) {
4724                 print <<EOT;
4725 <dt><b>pickaxe</b></dt>
4726 <dd>All commits that caused the string to appear or disappear from any file (changes that
4727 added, removed or "modified" the string) will be listed. This search can take a while and
4728 takes a lot of strain on the server, so please use it wisely.</dd>
4729 EOT
4730         }
4731         print "</dl>\n";
4732         git_footer_html();
4733 }
4734
4735 sub git_shortlog {
4736         my $head = git_get_head_hash($project);
4737         if (!defined $hash) {
4738                 $hash = $head;
4739         }
4740         if (!defined $page) {
4741                 $page = 0;
4742         }
4743         my $refs = git_get_references();
4744
4745         my @commitlist = parse_commits($hash, 101, (100 * $page));
4746
4747         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4748         my $next_link = '';
4749         if ($#commitlist >= 100) {
4750                 $next_link =
4751                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4752                                  -accesskey => "n", -title => "Alt-n"}, "next");
4753         }
4754
4755         git_header_html();
4756         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4757         git_print_header_div('summary', $project);
4758
4759         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4760
4761         git_footer_html();
4762 }
4763
4764 ## ......................................................................
4765 ## feeds (RSS, Atom; OPML)
4766
4767 sub git_feed {
4768         my $format = shift || 'atom';
4769         my ($have_blame) = gitweb_check_feature('blame');
4770
4771         # Atom: http://www.atomenabled.org/developers/syndication/
4772         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4773         if ($format ne 'rss' && $format ne 'atom') {
4774                 die_error(undef, "Unknown web feed format");
4775         }
4776
4777         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4778         my $head = $hash || 'HEAD';
4779         my @commitlist = parse_commits($head, 150);
4780
4781         my %latest_commit;
4782         my %latest_date;
4783         my $content_type = "application/$format+xml";
4784         if (defined $cgi->http('HTTP_ACCEPT') &&
4785                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4786                 # browser (feed reader) prefers text/xml
4787                 $content_type = 'text/xml';
4788         }
4789         if (defined($commitlist[0])) {
4790                 %latest_commit = %{$commitlist[0]};
4791                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4792                 print $cgi->header(
4793                         -type => $content_type,
4794                         -charset => 'utf-8',
4795                         -last_modified => $latest_date{'rfc2822'});
4796         } else {
4797                 print $cgi->header(
4798                         -type => $content_type,
4799                         -charset => 'utf-8');
4800         }
4801
4802         # Optimization: skip generating the body if client asks only
4803         # for Last-Modified date.
4804         return if ($cgi->request_method() eq 'HEAD');
4805
4806         # header variables
4807         my $title = "$site_name - $project/$action";
4808         my $feed_type = 'log';
4809         if (defined $hash) {
4810                 $title .= " - '$hash'";
4811                 $feed_type = 'branch log';
4812                 if (defined $file_name) {
4813                         $title .= " :: $file_name";
4814                         $feed_type = 'history';
4815                 }
4816         } elsif (defined $file_name) {
4817                 $title .= " - $file_name";
4818                 $feed_type = 'history';
4819         }
4820         $title .= " $feed_type";
4821         my $descr = git_get_project_description($project);
4822         if (defined $descr) {
4823                 $descr = esc_html($descr);
4824         } else {
4825                 $descr = "$project " .
4826                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4827                          " feed";
4828         }
4829         my $owner = git_get_project_owner($project);
4830         $owner = esc_html($owner);
4831
4832         #header
4833         my $alt_url;
4834         if (defined $file_name) {
4835                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4836         } elsif (defined $hash) {
4837                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4838         } else {
4839                 $alt_url = href(-full=>1, action=>"summary");
4840         }
4841         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4842         if ($format eq 'rss') {
4843                 print <<XML;
4844 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4845 <channel>
4846 XML
4847                 print "<title>$title</title>\n" .
4848                       "<link>$alt_url</link>\n" .
4849                       "<description>$descr</description>\n" .
4850                       "<language>en</language>\n";
4851         } elsif ($format eq 'atom') {
4852                 print <<XML;
4853 <feed xmlns="http://www.w3.org/2005/Atom">
4854 XML
4855                 print "<title>$title</title>\n" .
4856                       "<subtitle>$descr</subtitle>\n" .
4857                       '<link rel="alternate" type="text/html" href="' .
4858                       $alt_url . '" />' . "\n" .
4859                       '<link rel="self" type="' . $content_type . '" href="' .
4860                       $cgi->self_url() . '" />' . "\n" .
4861                       "<id>" . href(-full=>1) . "</id>\n" .
4862                       # use project owner for feed author
4863                       "<author><name>$owner</name></author>\n";
4864                 if (defined $favicon) {
4865                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4866                 }
4867                 if (defined $logo_url) {
4868                         # not twice as wide as tall: 72 x 27 pixels
4869                         print "<logo>" . esc_url($logo) . "</logo>\n";
4870                 }
4871                 if (! %latest_date) {
4872                         # dummy date to keep the feed valid until commits trickle in:
4873                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4874                 } else {
4875                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4876                 }
4877         }
4878
4879         # contents
4880         for (my $i = 0; $i <= $#commitlist; $i++) {
4881                 my %co = %{$commitlist[$i]};
4882                 my $commit = $co{'id'};
4883                 # we read 150, we always show 30 and the ones more recent than 48 hours
4884                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4885                         last;
4886                 }
4887                 my %cd = parse_date($co{'author_epoch'});
4888
4889                 # get list of changed files
4890                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4891                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4892                         or next;
4893                 my @difftree = map { chomp; $_ } <$fd>;
4894                 close $fd
4895                         or next;
4896
4897                 # print element (entry, item)
4898                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4899                 if ($format eq 'rss') {
4900                         print "<item>\n" .
4901                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4902                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4903                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4904                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4905                               "<link>$co_url</link>\n" .
4906                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4907                               "<content:encoded>" .
4908                               "<![CDATA[\n";
4909                 } elsif ($format eq 'atom') {
4910                         print "<entry>\n" .
4911                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4912                               "<updated>$cd{'iso-8601'}</updated>\n" .
4913                               "<author>\n" .
4914                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4915                         if ($co{'author_email'}) {
4916                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4917                         }
4918                         print "</author>\n" .
4919                               # use committer for contributor
4920                               "<contributor>\n" .
4921                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4922                         if ($co{'committer_email'}) {
4923                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4924                         }
4925                         print "</contributor>\n" .
4926                               "<published>$cd{'iso-8601'}</published>\n" .
4927                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4928                               "<id>$co_url</id>\n" .
4929                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4930                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4931                 }
4932                 my $comment = $co{'comment'};
4933                 print "<pre>\n";
4934                 foreach my $line (@$comment) {
4935                         $line = esc_html($line);
4936                         print "$line\n";
4937                 }
4938                 print "</pre><ul>\n";
4939                 foreach my $difftree_line (@difftree) {
4940                         my %difftree = parse_difftree_raw_line($difftree_line);
4941                         next if !$difftree{'from_id'};
4942
4943                         my $file = $difftree{'file'} || $difftree{'to_file'};
4944
4945                         print "<li>" .
4946                               "[" .
4947                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4948                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4949                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4950                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4951                                       -title => "diff"}, 'D');
4952                         if ($have_blame) {
4953                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4954                                                              file_name=>$file, hash_base=>$commit),
4955                                               -title => "blame"}, 'B');
4956                         }
4957                         # if this is not a feed of a file history
4958                         if (!defined $file_name || $file_name ne $file) {
4959                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4960                                                              file_name=>$file, hash=>$commit),
4961                                               -title => "history"}, 'H');
4962                         }
4963                         $file = esc_path($file);
4964                         print "] ".
4965                               "$file</li>\n";
4966                 }
4967                 if ($format eq 'rss') {
4968                         print "</ul>]]>\n" .
4969                               "</content:encoded>\n" .
4970                               "</item>\n";
4971                 } elsif ($format eq 'atom') {
4972                         print "</ul>\n</div>\n" .
4973                               "</content>\n" .
4974                               "</entry>\n";
4975                 }
4976         }
4977
4978         # end of feed
4979         if ($format eq 'rss') {
4980                 print "</channel>\n</rss>\n";
4981         }       elsif ($format eq 'atom') {
4982                 print "</feed>\n";
4983         }
4984 }
4985
4986 sub git_rss {
4987         git_feed('rss');
4988 }
4989
4990 sub git_atom {
4991         git_feed('atom');
4992 }
4993
4994 sub git_opml {
4995         my @list = git_get_projects_list();
4996
4997         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4998         print <<XML;
4999 <?xml version="1.0" encoding="utf-8"?>
5000 <opml version="1.0">
5001 <head>
5002   <title>$site_name OPML Export</title>
5003 </head>
5004 <body>
5005 <outline text="git RSS feeds">
5006 XML
5007
5008         foreach my $pr (@list) {
5009                 my %proj = %$pr;
5010                 my $head = git_get_head_hash($proj{'path'});
5011                 if (!defined $head) {
5012                         next;
5013                 }
5014                 $git_dir = "$projectroot/$proj{'path'}";
5015                 my %co = parse_commit($head);
5016                 if (!%co) {
5017                         next;
5018                 }
5019
5020                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5021                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5022                 my $html = "$my_url?p=$proj{'path'};a=summary";
5023                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5024         }
5025         print <<XML;
5026 </outline>
5027 </body>
5028 </opml>
5029 XML
5030 }