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 $diffinfo &&
2663                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2664                     $diffinfo->{'to_id'} eq $to_id) {
2665                         # this is split patch
2666                         print "<div class=\"patch cont\">\n";
2667                 } else {
2668                         # advance raw git-diff output if needed
2669                         $patch_idx++ if defined $diffinfo;
2670
2671                         # read and prepare patch information
2672                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2673                                 # pre-parsed (or generated by hand)
2674                                 $diffinfo = $difftree->[$patch_idx];
2675                         } else {
2676                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2677                         }
2678                         if ($diffinfo->{'nparents'}) {
2679                                 # combined diff
2680                                 $from{'file'} = [];
2681                                 $from{'href'} = [];
2682                                 fill_from_file_info($diffinfo, @hash_parents)
2683                                         unless exists $diffinfo->{'from_file'};
2684                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2685                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2686                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2687                                                 $from{'href'}[$i] = href(action=>"blob",
2688                                                                          hash_base=>$hash_parents[$i],
2689                                                                          hash=>$diffinfo->{'from_id'}[$i],
2690                                                                          file_name=>$from{'file'}[$i]);
2691                                         } else {
2692                                                 $from{'href'}[$i] = undef;
2693                                         }
2694                                 }
2695                         } else {
2696                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2697                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2698                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2699                                                              hash=>$diffinfo->{'from_id'},
2700                                                              file_name=>$from{'file'});
2701                                 } else {
2702                                         delete $from{'href'};
2703                                 }
2704                         }
2705                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2706                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2707                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2708                                                    hash=>$diffinfo->{'to_id'},
2709                                                    file_name=>$to{'file'});
2710                         } else {
2711                                 delete $to{'href'};
2712                         }
2713                         # this is first patch for raw difftree line with $patch_idx index
2714                         # we index @$difftree array from 0, but number patches from 1
2715                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2716                 }
2717
2718                 # print "git diff" header
2719                 $patch_line = shift @diff_header;
2720                 if ($diffinfo->{'nparents'}) {
2721
2722                         # combined diff
2723                         $patch_line =~ s!^(diff (.*?) )"?.*$!$1!;
2724                         if ($to{'href'}) {
2725                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2726                                                        esc_path($to{'file'}));
2727                         } else { # file was deleted
2728                                 $patch_line .= esc_path($to{'file'});
2729                         }
2730
2731                 } else {
2732
2733                         $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2734                         if ($from{'href'}) {
2735                                 $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2736                                                        'a/' . esc_path($from{'file'}));
2737                         } else { # file was added
2738                                 $patch_line .= 'a/' . esc_path($from{'file'});
2739                         }
2740                         $patch_line .= ' ';
2741                         if ($to{'href'}) {
2742                                 $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2743                                                        'b/' . esc_path($to{'file'}));
2744                         } else { # file was deleted
2745                                 $patch_line .= 'b/' . esc_path($to{'file'});
2746                         }
2747
2748                 }
2749                 print "<div class=\"diff header\">$patch_line</div>\n";
2750
2751                 # print extended diff header
2752                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2753         EXTENDED_HEADER:
2754                 foreach $patch_line (@diff_header) {
2755                         # match <path>
2756                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2757                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2758                                                        esc_path($from{'file'}));
2759                         }
2760                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2761                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2762                                                        esc_path($to{'file'}));
2763                         }
2764                         # match single <mode>
2765                         if ($patch_line =~ m/\s(\d{6})$/) {
2766                                 $patch_line .= '<span class="info"> (' .
2767                                                file_type_long($1) .
2768                                                ')</span>';
2769                         }
2770                         # match <hash>
2771                         if ($patch_line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
2772                                 # can match only for combined diff
2773                                 $patch_line = 'index ';
2774                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2775                                         if ($from{'href'}[$i]) {
2776                                                 $patch_line .= $cgi->a({-href=>$from{'href'}[$i],
2777                                                                         -class=>"hash"},
2778                                                                        substr($diffinfo->{'from_id'}[$i],0,7));
2779                                         } else {
2780                                                 $patch_line .= '0' x 7;
2781                                         }
2782                                         # separator
2783                                         $patch_line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
2784                                 }
2785                                 $patch_line .= '..';
2786                                 if ($to{'href'}) {
2787                                         $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2788                                                                substr($diffinfo->{'to_id'},0,7));
2789                                 } else {
2790                                         $patch_line .= '0' x 7;
2791                                 }
2792
2793                         } elsif ($patch_line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
2794                                 # can match only for ordinary diff
2795                                 my ($from_link, $to_link);
2796                                 if ($from{'href'}) {
2797                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2798                                                              substr($diffinfo->{'from_id'},0,7));
2799                                 } else {
2800                                         $from_link = '0' x 7;
2801                                 }
2802                                 if ($to{'href'}) {
2803                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2804                                                            substr($diffinfo->{'to_id'},0,7));
2805                                 } else {
2806                                         $to_link = '0' x 7;
2807                                 }
2808                                 #affirm {
2809                                 #       my ($from_hash, $to_hash) =
2810                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2811                                 #       my ($from_id, $to_id) =
2812                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2813                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2814                                 #} if DEBUG;
2815                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2816                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2817                         }
2818                         print $patch_line . "<br/>\n";
2819                 }
2820                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2821
2822                 # from-file/to-file diff header
2823                 $patch_line = $last_patch_line;
2824                 if (! $patch_line) {
2825                         print "</div>\n"; # class="patch"
2826                         last PATCH;
2827                 }
2828                 next PATCH if ($patch_line =~ m/^diff /);
2829                 #assert($patch_line =~ m/^---/) if DEBUG;
2830                 if (!$diffinfo->{'nparents'} && # not from-file line for combined diff
2831                     $from{'href'} && $patch_line =~ m!^--- "?a/!) {
2832                         $patch_line = '--- a/' .
2833                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2834                                               esc_path($from{'file'}));
2835                 }
2836                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2837
2838                 $patch_line = <$fd>;
2839                 chomp $patch_line;
2840
2841                 #assert($patch_line =~ m/^+++/) if DEBUG;
2842                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2843                         $patch_line = '+++ b/' .
2844                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2845                                               esc_path($to{'file'}));
2846                 }
2847                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2848
2849                 # the patch itself
2850         LINE:
2851                 while ($patch_line = <$fd>) {
2852                         chomp $patch_line;
2853
2854                         next PATCH if ($patch_line =~ m/^diff /);
2855
2856                         print format_diff_line($patch_line, \%from, \%to);
2857                 }
2858
2859         } continue {
2860                 print "</div>\n"; # class="patch"
2861         }
2862         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2863
2864         print "</div>\n"; # class="patchset"
2865 }
2866
2867 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2868
2869 sub git_project_list_body {
2870         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2871
2872         my ($check_forks) = gitweb_check_feature('forks');
2873
2874         my @projects;
2875         foreach my $pr (@$projlist) {
2876                 my (@aa) = git_get_last_activity($pr->{'path'});
2877                 unless (@aa) {
2878                         next;
2879                 }
2880                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2881                 if (!defined $pr->{'descr'}) {
2882                         my $descr = git_get_project_description($pr->{'path'}) || "";
2883                         $pr->{'descr_long'} = decode_utf8($descr);
2884                         $pr->{'descr'} = chop_str($descr, 25, 5);
2885                 }
2886                 if (!defined $pr->{'owner'}) {
2887                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2888                 }
2889                 if ($check_forks) {
2890                         my $pname = $pr->{'path'};
2891                         if (($pname =~ s/\.git$//) &&
2892                             ($pname !~ /\/$/) &&
2893                             (-d "$projectroot/$pname")) {
2894                                 $pr->{'forks'} = "-d $projectroot/$pname";
2895                         }
2896                         else {
2897                                 $pr->{'forks'} = 0;
2898                         }
2899                 }
2900                 push @projects, $pr;
2901         }
2902
2903         $order ||= $default_projects_order;
2904         $from = 0 unless defined $from;
2905         $to = $#projects if (!defined $to || $#projects < $to);
2906
2907         print "<table class=\"project_list\">\n";
2908         unless ($no_header) {
2909                 print "<tr>\n";
2910                 if ($check_forks) {
2911                         print "<th></th>\n";
2912                 }
2913                 if ($order eq "project") {
2914                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2915                         print "<th>Project</th>\n";
2916                 } else {
2917                         print "<th>" .
2918                               $cgi->a({-href => href(project=>undef, order=>'project'),
2919                                        -class => "header"}, "Project") .
2920                               "</th>\n";
2921                 }
2922                 if ($order eq "descr") {
2923                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2924                         print "<th>Description</th>\n";
2925                 } else {
2926                         print "<th>" .
2927                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2928                                        -class => "header"}, "Description") .
2929                               "</th>\n";
2930                 }
2931                 if ($order eq "owner") {
2932                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2933                         print "<th>Owner</th>\n";
2934                 } else {
2935                         print "<th>" .
2936                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2937                                        -class => "header"}, "Owner") .
2938                               "</th>\n";
2939                 }
2940                 if ($order eq "age") {
2941                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2942                         print "<th>Last Change</th>\n";
2943                 } else {
2944                         print "<th>" .
2945                               $cgi->a({-href => href(project=>undef, order=>'age'),
2946                                        -class => "header"}, "Last Change") .
2947                               "</th>\n";
2948                 }
2949                 print "<th></th>\n" .
2950                       "</tr>\n";
2951         }
2952         my $alternate = 1;
2953         for (my $i = $from; $i <= $to; $i++) {
2954                 my $pr = $projects[$i];
2955                 if ($alternate) {
2956                         print "<tr class=\"dark\">\n";
2957                 } else {
2958                         print "<tr class=\"light\">\n";
2959                 }
2960                 $alternate ^= 1;
2961                 if ($check_forks) {
2962                         print "<td>";
2963                         if ($pr->{'forks'}) {
2964                                 print "<!-- $pr->{'forks'} -->\n";
2965                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2966                         }
2967                         print "</td>\n";
2968                 }
2969                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2970                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2971                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2972                                         -class => "list", -title => $pr->{'descr_long'}},
2973                                         esc_html($pr->{'descr'})) . "</td>\n" .
2974                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2975                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2976                       $pr->{'age_string'} . "</td>\n" .
2977                       "<td class=\"link\">" .
2978                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2979                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2980                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2981                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2982                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2983                       "</td>\n" .
2984                       "</tr>\n";
2985         }
2986         if (defined $extra) {
2987                 print "<tr>\n";
2988                 if ($check_forks) {
2989                         print "<td></td>\n";
2990                 }
2991                 print "<td colspan=\"5\">$extra</td>\n" .
2992                       "</tr>\n";
2993         }
2994         print "</table>\n";
2995 }
2996
2997 sub git_shortlog_body {
2998         # uses global variable $project
2999         my ($commitlist, $from, $to, $refs, $extra) = @_;
3000
3001         my $have_snapshot = gitweb_have_snapshot();
3002
3003         $from = 0 unless defined $from;
3004         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3005
3006         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3007         my $alternate = 1;
3008         for (my $i = $from; $i <= $to; $i++) {
3009                 my %co = %{$commitlist->[$i]};
3010                 my $commit = $co{'id'};
3011                 my $ref = format_ref_marker($refs, $commit);
3012                 if ($alternate) {
3013                         print "<tr class=\"dark\">\n";
3014                 } else {
3015                         print "<tr class=\"light\">\n";
3016                 }
3017                 $alternate ^= 1;
3018                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3019                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3020                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3021                       "<td>";
3022                 print format_subject_html($co{'title'}, $co{'title_short'},
3023                                           href(action=>"commit", hash=>$commit), $ref);
3024                 print "</td>\n" .
3025                       "<td class=\"link\">" .
3026                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3027                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3028                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3029                 if ($have_snapshot) {
3030                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3031                 }
3032                 print "</td>\n" .
3033                       "</tr>\n";
3034         }
3035         if (defined $extra) {
3036                 print "<tr>\n" .
3037                       "<td colspan=\"4\">$extra</td>\n" .
3038                       "</tr>\n";
3039         }
3040         print "</table>\n";
3041 }
3042
3043 sub git_history_body {
3044         # Warning: assumes constant type (blob or tree) during history
3045         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3046
3047         $from = 0 unless defined $from;
3048         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3049
3050         print "<table class=\"history\" cellspacing=\"0\">\n";
3051         my $alternate = 1;
3052         for (my $i = $from; $i <= $to; $i++) {
3053                 my %co = %{$commitlist->[$i]};
3054                 if (!%co) {
3055                         next;
3056                 }
3057                 my $commit = $co{'id'};
3058
3059                 my $ref = format_ref_marker($refs, $commit);
3060
3061                 if ($alternate) {
3062                         print "<tr class=\"dark\">\n";
3063                 } else {
3064                         print "<tr class=\"light\">\n";
3065                 }
3066                 $alternate ^= 1;
3067                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3068                       # shortlog uses      chop_str($co{'author_name'}, 10)
3069                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3070                       "<td>";
3071                 # originally git_history used chop_str($co{'title'}, 50)
3072                 print format_subject_html($co{'title'}, $co{'title_short'},
3073                                           href(action=>"commit", hash=>$commit), $ref);
3074                 print "</td>\n" .
3075                       "<td class=\"link\">" .
3076                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3077                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3078
3079                 if ($ftype eq 'blob') {
3080                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3081                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3082                         if (defined $blob_current && defined $blob_parent &&
3083                                         $blob_current ne $blob_parent) {
3084                                 print " | " .
3085                                         $cgi->a({-href => href(action=>"blobdiff",
3086                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3087                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3088                                                                file_name=>$file_name)},
3089                                                 "diff to current");
3090                         }
3091                 }
3092                 print "</td>\n" .
3093                       "</tr>\n";
3094         }
3095         if (defined $extra) {
3096                 print "<tr>\n" .
3097                       "<td colspan=\"4\">$extra</td>\n" .
3098                       "</tr>\n";
3099         }
3100         print "</table>\n";
3101 }
3102
3103 sub git_tags_body {
3104         # uses global variable $project
3105         my ($taglist, $from, $to, $extra) = @_;
3106         $from = 0 unless defined $from;
3107         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3108
3109         print "<table class=\"tags\" cellspacing=\"0\">\n";
3110         my $alternate = 1;
3111         for (my $i = $from; $i <= $to; $i++) {
3112                 my $entry = $taglist->[$i];
3113                 my %tag = %$entry;
3114                 my $comment = $tag{'subject'};
3115                 my $comment_short;
3116                 if (defined $comment) {
3117                         $comment_short = chop_str($comment, 30, 5);
3118                 }
3119                 if ($alternate) {
3120                         print "<tr class=\"dark\">\n";
3121                 } else {
3122                         print "<tr class=\"light\">\n";
3123                 }
3124                 $alternate ^= 1;
3125                 if (defined $tag{'age'}) {
3126                         print "<td><i>$tag{'age'}</i></td>\n";
3127                 } else {
3128                         print "<td></td>\n";
3129                 }
3130                 print "<td>" .
3131                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3132                                -class => "list name"}, esc_html($tag{'name'})) .
3133                       "</td>\n" .
3134                       "<td>";
3135                 if (defined $comment) {
3136                         print format_subject_html($comment, $comment_short,
3137                                                   href(action=>"tag", hash=>$tag{'id'}));
3138                 }
3139                 print "</td>\n" .
3140                       "<td class=\"selflink\">";
3141                 if ($tag{'type'} eq "tag") {
3142                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3143                 } else {
3144                         print "&nbsp;";
3145                 }
3146                 print "</td>\n" .
3147                       "<td class=\"link\">" . " | " .
3148                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3149                 if ($tag{'reftype'} eq "commit") {
3150                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3151                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3152                 } elsif ($tag{'reftype'} eq "blob") {
3153                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3154                 }
3155                 print "</td>\n" .
3156                       "</tr>";
3157         }
3158         if (defined $extra) {
3159                 print "<tr>\n" .
3160                       "<td colspan=\"5\">$extra</td>\n" .
3161                       "</tr>\n";
3162         }
3163         print "</table>\n";
3164 }
3165
3166 sub git_heads_body {
3167         # uses global variable $project
3168         my ($headlist, $head, $from, $to, $extra) = @_;
3169         $from = 0 unless defined $from;
3170         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3171
3172         print "<table class=\"heads\" cellspacing=\"0\">\n";
3173         my $alternate = 1;
3174         for (my $i = $from; $i <= $to; $i++) {
3175                 my $entry = $headlist->[$i];
3176                 my %ref = %$entry;
3177                 my $curr = $ref{'id'} eq $head;
3178                 if ($alternate) {
3179                         print "<tr class=\"dark\">\n";
3180                 } else {
3181                         print "<tr class=\"light\">\n";
3182                 }
3183                 $alternate ^= 1;
3184                 print "<td><i>$ref{'age'}</i></td>\n" .
3185                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3186                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3187                                -class => "list name"},esc_html($ref{'name'})) .
3188                       "</td>\n" .
3189                       "<td class=\"link\">" .
3190                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3191                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3192                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3193                       "</td>\n" .
3194                       "</tr>";
3195         }
3196         if (defined $extra) {
3197                 print "<tr>\n" .
3198                       "<td colspan=\"3\">$extra</td>\n" .
3199                       "</tr>\n";
3200         }
3201         print "</table>\n";
3202 }
3203
3204 sub git_search_grep_body {
3205         my ($commitlist, $from, $to, $extra) = @_;
3206         $from = 0 unless defined $from;
3207         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3208
3209         print "<table class=\"grep\" cellspacing=\"0\">\n";
3210         my $alternate = 1;
3211         for (my $i = $from; $i <= $to; $i++) {
3212                 my %co = %{$commitlist->[$i]};
3213                 if (!%co) {
3214                         next;
3215                 }
3216                 my $commit = $co{'id'};
3217                 if ($alternate) {
3218                         print "<tr class=\"dark\">\n";
3219                 } else {
3220                         print "<tr class=\"light\">\n";
3221                 }
3222                 $alternate ^= 1;
3223                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3224                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3225                       "<td>" .
3226                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3227                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3228                 my $comment = $co{'comment'};
3229                 foreach my $line (@$comment) {
3230                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3231                                 my $lead = esc_html($1) || "";
3232                                 $lead = chop_str($lead, 30, 10);
3233                                 my $match = esc_html($2) || "";
3234                                 my $trail = esc_html($3) || "";
3235                                 $trail = chop_str($trail, 30, 10);
3236                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3237                                 print chop_str($text, 80, 5) . "<br/>\n";
3238                         }
3239                 }
3240                 print "</td>\n" .
3241                       "<td class=\"link\">" .
3242                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3243                       " | " .
3244                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3245                 print "</td>\n" .
3246                       "</tr>\n";
3247         }
3248         if (defined $extra) {
3249                 print "<tr>\n" .
3250                       "<td colspan=\"3\">$extra</td>\n" .
3251                       "</tr>\n";
3252         }
3253         print "</table>\n";
3254 }
3255
3256 ## ======================================================================
3257 ## ======================================================================
3258 ## actions
3259
3260 sub git_project_list {
3261         my $order = $cgi->param('o');
3262         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3263                 die_error(undef, "Unknown order parameter");
3264         }
3265
3266         my @list = git_get_projects_list();
3267         if (!@list) {
3268                 die_error(undef, "No projects found");
3269         }
3270
3271         git_header_html();
3272         if (-f $home_text) {
3273                 print "<div class=\"index_include\">\n";
3274                 open (my $fd, $home_text);
3275                 print <$fd>;
3276                 close $fd;
3277                 print "</div>\n";
3278         }
3279         git_project_list_body(\@list, $order);
3280         git_footer_html();
3281 }
3282
3283 sub git_forks {
3284         my $order = $cgi->param('o');
3285         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3286                 die_error(undef, "Unknown order parameter");
3287         }
3288
3289         my @list = git_get_projects_list($project);
3290         if (!@list) {
3291                 die_error(undef, "No forks found");
3292         }
3293
3294         git_header_html();
3295         git_print_page_nav('','');
3296         git_print_header_div('summary', "$project forks");
3297         git_project_list_body(\@list, $order);
3298         git_footer_html();
3299 }
3300
3301 sub git_project_index {
3302         my @projects = git_get_projects_list($project);
3303
3304         print $cgi->header(
3305                 -type => 'text/plain',
3306                 -charset => 'utf-8',
3307                 -content_disposition => 'inline; filename="index.aux"');
3308
3309         foreach my $pr (@projects) {
3310                 if (!exists $pr->{'owner'}) {
3311                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3312                 }
3313
3314                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3315                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3316                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3317                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3318                 $path  =~ s/ /\+/g;
3319                 $owner =~ s/ /\+/g;
3320
3321                 print "$path $owner\n";
3322         }
3323 }
3324
3325 sub git_summary {
3326         my $descr = git_get_project_description($project) || "none";
3327         my %co = parse_commit("HEAD");
3328         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3329         my $head = $co{'id'};
3330
3331         my $owner = git_get_project_owner($project);
3332
3333         my $refs = git_get_references();
3334         # These get_*_list functions return one more to allow us to see if
3335         # there are more ...
3336         my @taglist  = git_get_tags_list(16);
3337         my @headlist = git_get_heads_list(16);
3338         my @forklist;
3339         my ($check_forks) = gitweb_check_feature('forks');
3340
3341         if ($check_forks) {
3342                 @forklist = git_get_projects_list($project);
3343         }
3344
3345         git_header_html();
3346         git_print_page_nav('summary','', $head);
3347
3348         print "<div class=\"title\">&nbsp;</div>\n";
3349         print "<table cellspacing=\"0\">\n" .
3350               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3351               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3352               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3353         # use per project git URL list in $projectroot/$project/cloneurl
3354         # or make project git URL from git base URL and project name
3355         my $url_tag = "URL";
3356         my @url_list = git_get_project_url_list($project);
3357         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3358         foreach my $git_url (@url_list) {
3359                 next unless $git_url;
3360                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3361                 $url_tag = "";
3362         }
3363         print "</table>\n";
3364
3365         if (-s "$projectroot/$project/README.html") {
3366                 if (open my $fd, "$projectroot/$project/README.html") {
3367                         print "<div class=\"title\">readme</div>\n";
3368                         print $_ while (<$fd>);
3369                         close $fd;
3370                 }
3371         }
3372
3373         # we need to request one more than 16 (0..15) to check if
3374         # those 16 are all
3375         my @commitlist = parse_commits($head, 17);
3376         git_print_header_div('shortlog');
3377         git_shortlog_body(\@commitlist, 0, 15, $refs,
3378                           $#commitlist <=  15 ? undef :
3379                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3380
3381         if (@taglist) {
3382                 git_print_header_div('tags');
3383                 git_tags_body(\@taglist, 0, 15,
3384                               $#taglist <=  15 ? undef :
3385                               $cgi->a({-href => href(action=>"tags")}, "..."));
3386         }
3387
3388         if (@headlist) {
3389                 git_print_header_div('heads');
3390                 git_heads_body(\@headlist, $head, 0, 15,
3391                                $#headlist <= 15 ? undef :
3392                                $cgi->a({-href => href(action=>"heads")}, "..."));
3393         }
3394
3395         if (@forklist) {
3396                 git_print_header_div('forks');
3397                 git_project_list_body(\@forklist, undef, 0, 15,
3398                                       $#forklist <= 15 ? undef :
3399                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3400                                       'noheader');
3401         }
3402
3403         git_footer_html();
3404 }
3405
3406 sub git_tag {
3407         my $head = git_get_head_hash($project);
3408         git_header_html();
3409         git_print_page_nav('','', $head,undef,$head);
3410         my %tag = parse_tag($hash);
3411         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3412         print "<div class=\"title_text\">\n" .
3413               "<table cellspacing=\"0\">\n" .
3414               "<tr>\n" .
3415               "<td>object</td>\n" .
3416               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3417                                $tag{'object'}) . "</td>\n" .
3418               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3419                                               $tag{'type'}) . "</td>\n" .
3420               "</tr>\n";
3421         if (defined($tag{'author'})) {
3422                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3423                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3424                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3425                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3426                         "</td></tr>\n";
3427         }
3428         print "</table>\n\n" .
3429               "</div>\n";
3430         print "<div class=\"page_body\">";
3431         my $comment = $tag{'comment'};
3432         foreach my $line (@$comment) {
3433                 chomp $line;
3434                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3435         }
3436         print "</div>\n";
3437         git_footer_html();
3438 }
3439
3440 sub git_blame2 {
3441         my $fd;
3442         my $ftype;
3443
3444         my ($have_blame) = gitweb_check_feature('blame');
3445         if (!$have_blame) {
3446                 die_error('403 Permission denied', "Permission denied");
3447         }
3448         die_error('404 Not Found', "File name not defined") if (!$file_name);
3449         $hash_base ||= git_get_head_hash($project);
3450         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3451         my %co = parse_commit($hash_base)
3452                 or die_error(undef, "Reading commit failed");
3453         if (!defined $hash) {
3454                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3455                         or die_error(undef, "Error looking up file");
3456         }
3457         $ftype = git_get_type($hash);
3458         if ($ftype !~ "blob") {
3459                 die_error('400 Bad Request', "Object is not a blob");
3460         }
3461         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3462               $file_name, $hash_base)
3463                 or die_error(undef, "Open git-blame failed");
3464         git_header_html();
3465         my $formats_nav =
3466                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3467                         "blob") .
3468                 " | " .
3469                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3470                         "history") .
3471                 " | " .
3472                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3473                         "HEAD");
3474         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3475         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3476         git_print_page_path($file_name, $ftype, $hash_base);
3477         my @rev_color = (qw(light2 dark2));
3478         my $num_colors = scalar(@rev_color);
3479         my $current_color = 0;
3480         my $last_rev;
3481         print <<HTML;
3482 <div class="page_body">
3483 <table class="blame">
3484 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3485 HTML
3486         my %metainfo = ();
3487         while (1) {
3488                 $_ = <$fd>;
3489                 last unless defined $_;
3490                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3491                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3492                 if (!exists $metainfo{$full_rev}) {
3493                         $metainfo{$full_rev} = {};
3494                 }
3495                 my $meta = $metainfo{$full_rev};
3496                 while (<$fd>) {
3497                         last if (s/^\t//);
3498                         if (/^(\S+) (.*)$/) {
3499                                 $meta->{$1} = $2;
3500                         }
3501                 }
3502                 my $data = $_;
3503                 chomp $data;
3504                 my $rev = substr($full_rev, 0, 8);
3505                 my $author = $meta->{'author'};
3506                 my %date = parse_date($meta->{'author-time'},
3507                                       $meta->{'author-tz'});
3508                 my $date = $date{'iso-tz'};
3509                 if ($group_size) {
3510                         $current_color = ++$current_color % $num_colors;
3511                 }
3512                 print "<tr class=\"$rev_color[$current_color]\">\n";
3513                 if ($group_size) {
3514                         print "<td class=\"sha1\"";
3515                         print " title=\"". esc_html($author) . ", $date\"";
3516                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3517                         print ">";
3518                         print $cgi->a({-href => href(action=>"commit",
3519                                                      hash=>$full_rev,
3520                                                      file_name=>$file_name)},
3521                                       esc_html($rev));
3522                         print "</td>\n";
3523                 }
3524                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3525                         or die_error(undef, "Open git-rev-parse failed");
3526                 my $parent_commit = <$dd>;
3527                 close $dd;
3528                 chomp($parent_commit);
3529                 my $blamed = href(action => 'blame',
3530                                   file_name => $meta->{'filename'},
3531                                   hash_base => $parent_commit);
3532                 print "<td class=\"linenr\">";
3533                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3534                                 -id => "l$lineno",
3535                                 -class => "linenr" },
3536                               esc_html($lineno));
3537                 print "</td>";
3538                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3539                 print "</tr>\n";
3540         }
3541         print "</table>\n";
3542         print "</div>";
3543         close $fd
3544                 or print "Reading blob failed\n";
3545         git_footer_html();
3546 }
3547
3548 sub git_blame {
3549         my $fd;
3550
3551         my ($have_blame) = gitweb_check_feature('blame');
3552         if (!$have_blame) {
3553                 die_error('403 Permission denied', "Permission denied");
3554         }
3555         die_error('404 Not Found', "File name not defined") if (!$file_name);
3556         $hash_base ||= git_get_head_hash($project);
3557         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3558         my %co = parse_commit($hash_base)
3559                 or die_error(undef, "Reading commit failed");
3560         if (!defined $hash) {
3561                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3562                         or die_error(undef, "Error lookup file");
3563         }
3564         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3565                 or die_error(undef, "Open git-annotate failed");
3566         git_header_html();
3567         my $formats_nav =
3568                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3569                         "blob") .
3570                 " | " .
3571                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3572                         "history") .
3573                 " | " .
3574                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3575                         "HEAD");
3576         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3577         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3578         git_print_page_path($file_name, 'blob', $hash_base);
3579         print "<div class=\"page_body\">\n";
3580         print <<HTML;
3581 <table class="blame">
3582   <tr>
3583     <th>Commit</th>
3584     <th>Age</th>
3585     <th>Author</th>
3586     <th>Line</th>
3587     <th>Data</th>
3588   </tr>
3589 HTML
3590         my @line_class = (qw(light dark));
3591         my $line_class_len = scalar (@line_class);
3592         my $line_class_num = $#line_class;
3593         while (my $line = <$fd>) {
3594                 my $long_rev;
3595                 my $short_rev;
3596                 my $author;
3597                 my $time;
3598                 my $lineno;
3599                 my $data;
3600                 my $age;
3601                 my $age_str;
3602                 my $age_class;
3603
3604                 chomp $line;
3605                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3606
3607                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3608                         $long_rev = $1;
3609                         $author   = $2;
3610                         $time     = $3;
3611                         $lineno   = $4;
3612                         $data     = $5;
3613                 } else {
3614                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3615                         next;
3616                 }
3617                 $short_rev  = substr ($long_rev, 0, 8);
3618                 $age        = time () - $time;
3619                 $age_str    = age_string ($age);
3620                 $age_str    =~ s/ /&nbsp;/g;
3621                 $age_class  = age_class($age);
3622                 $author     = esc_html ($author);
3623                 $author     =~ s/ /&nbsp;/g;
3624
3625                 $data = untabify($data);
3626                 $data = esc_html ($data);
3627
3628                 print <<HTML;
3629   <tr class="$line_class[$line_class_num]">
3630     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3631     <td class="$age_class">$age_str</td>
3632     <td>$author</td>
3633     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3634     <td class="pre">$data</td>
3635   </tr>
3636 HTML
3637         } # while (my $line = <$fd>)
3638         print "</table>\n\n";
3639         close $fd
3640                 or print "Reading blob failed.\n";
3641         print "</div>";
3642         git_footer_html();
3643 }
3644
3645 sub git_tags {
3646         my $head = git_get_head_hash($project);
3647         git_header_html();
3648         git_print_page_nav('','', $head,undef,$head);
3649         git_print_header_div('summary', $project);
3650
3651         my @tagslist = git_get_tags_list();
3652         if (@tagslist) {
3653                 git_tags_body(\@tagslist);
3654         }
3655         git_footer_html();
3656 }
3657
3658 sub git_heads {
3659         my $head = git_get_head_hash($project);
3660         git_header_html();
3661         git_print_page_nav('','', $head,undef,$head);
3662         git_print_header_div('summary', $project);
3663
3664         my @headslist = git_get_heads_list();
3665         if (@headslist) {
3666                 git_heads_body(\@headslist, $head);
3667         }
3668         git_footer_html();
3669 }
3670
3671 sub git_blob_plain {
3672         my $expires;
3673
3674         if (!defined $hash) {
3675                 if (defined $file_name) {
3676                         my $base = $hash_base || git_get_head_hash($project);
3677                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3678                                 or die_error(undef, "Error lookup file");
3679                 } else {
3680                         die_error(undef, "No file name defined");
3681                 }
3682         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3683                 # blobs defined by non-textual hash id's can be cached
3684                 $expires = "+1d";
3685         }
3686
3687         my $type = shift;
3688         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3689                 or die_error(undef, "Couldn't cat $file_name, $hash");
3690
3691         $type ||= blob_mimetype($fd, $file_name);
3692
3693         # save as filename, even when no $file_name is given
3694         my $save_as = "$hash";
3695         if (defined $file_name) {
3696                 $save_as = $file_name;
3697         } elsif ($type =~ m/^text\//) {
3698                 $save_as .= '.txt';
3699         }
3700
3701         print $cgi->header(
3702                 -type => "$type",
3703                 -expires=>$expires,
3704                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3705         undef $/;
3706         binmode STDOUT, ':raw';
3707         print <$fd>;
3708         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3709         $/ = "\n";
3710         close $fd;
3711 }
3712
3713 sub git_blob {
3714         my $expires;
3715
3716         if (!defined $hash) {
3717                 if (defined $file_name) {
3718                         my $base = $hash_base || git_get_head_hash($project);
3719                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3720                                 or die_error(undef, "Error lookup file");
3721                 } else {
3722                         die_error(undef, "No file name defined");
3723                 }
3724         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3725                 # blobs defined by non-textual hash id's can be cached
3726                 $expires = "+1d";
3727         }
3728
3729         my ($have_blame) = gitweb_check_feature('blame');
3730         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3731                 or die_error(undef, "Couldn't cat $file_name, $hash");
3732         my $mimetype = blob_mimetype($fd, $file_name);
3733         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3734                 close $fd;
3735                 return git_blob_plain($mimetype);
3736         }
3737         # we can have blame only for text/* mimetype
3738         $have_blame &&= ($mimetype =~ m!^text/!);
3739
3740         git_header_html(undef, $expires);
3741         my $formats_nav = '';
3742         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3743                 if (defined $file_name) {
3744                         if ($have_blame) {
3745                                 $formats_nav .=
3746                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3747                                                                hash=>$hash, file_name=>$file_name)},
3748                                                 "blame") .
3749                                         " | ";
3750                         }
3751                         $formats_nav .=
3752                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3753                                                        hash=>$hash, file_name=>$file_name)},
3754                                         "history") .
3755                                 " | " .
3756                                 $cgi->a({-href => href(action=>"blob_plain",
3757                                                        hash=>$hash, file_name=>$file_name)},
3758                                         "raw") .
3759                                 " | " .
3760                                 $cgi->a({-href => href(action=>"blob",
3761                                                        hash_base=>"HEAD", file_name=>$file_name)},
3762                                         "HEAD");
3763                 } else {
3764                         $formats_nav .=
3765                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3766                 }
3767                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3768                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3769         } else {
3770                 print "<div class=\"page_nav\">\n" .
3771                       "<br/><br/></div>\n" .
3772                       "<div class=\"title\">$hash</div>\n";
3773         }
3774         git_print_page_path($file_name, "blob", $hash_base);
3775         print "<div class=\"page_body\">\n";
3776         if ($mimetype =~ m!^text/!) {
3777                 my $nr;
3778                 while (my $line = <$fd>) {
3779                         chomp $line;
3780                         $nr++;
3781                         $line = untabify($line);
3782                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3783                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3784                 }
3785         } elsif ($mimetype =~ m!^image/!) {
3786                 print qq!<img type="$mimetype"!;
3787                 if ($file_name) {
3788                         print qq! alt="$file_name" title="$file_name"!;
3789                 }
3790                 print qq! src="! .
3791                       href(action=>"blob_plain", hash=>$hash,
3792                            hash_base=>$hash_base, file_name=>$file_name) .
3793                       qq!" />\n!;
3794         }
3795         close $fd
3796                 or print "Reading blob failed.\n";
3797         print "</div>";
3798         git_footer_html();
3799 }
3800
3801 sub git_tree {
3802         my $have_snapshot = gitweb_have_snapshot();
3803
3804         if (!defined $hash_base) {
3805                 $hash_base = "HEAD";
3806         }
3807         if (!defined $hash) {
3808                 if (defined $file_name) {
3809                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3810                 } else {
3811                         $hash = $hash_base;
3812                 }
3813         }
3814         $/ = "\0";
3815         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3816                 or die_error(undef, "Open git-ls-tree failed");
3817         my @entries = map { chomp; $_ } <$fd>;
3818         close $fd or die_error(undef, "Reading tree failed");
3819         $/ = "\n";
3820
3821         my $refs = git_get_references();
3822         my $ref = format_ref_marker($refs, $hash_base);
3823         git_header_html();
3824         my $basedir = '';
3825         my ($have_blame) = gitweb_check_feature('blame');
3826         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3827                 my @views_nav = ();
3828                 if (defined $file_name) {
3829                         push @views_nav,
3830                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3831                                                        hash=>$hash, file_name=>$file_name)},
3832                                         "history"),
3833                                 $cgi->a({-href => href(action=>"tree",
3834                                                        hash_base=>"HEAD", file_name=>$file_name)},
3835                                         "HEAD"),
3836                 }
3837                 if ($have_snapshot) {
3838                         # FIXME: Should be available when we have no hash base as well.
3839                         push @views_nav,
3840                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3841                                         "snapshot");
3842                 }
3843                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3844                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3845         } else {
3846                 undef $hash_base;
3847                 print "<div class=\"page_nav\">\n";
3848                 print "<br/><br/></div>\n";
3849                 print "<div class=\"title\">$hash</div>\n";
3850         }
3851         if (defined $file_name) {
3852                 $basedir = $file_name;
3853                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3854                         $basedir .= '/';
3855                 }
3856         }
3857         git_print_page_path($file_name, 'tree', $hash_base);
3858         print "<div class=\"page_body\">\n";
3859         print "<table cellspacing=\"0\">\n";
3860         my $alternate = 1;
3861         # '..' (top directory) link if possible
3862         if (defined $hash_base &&
3863             defined $file_name && $file_name =~ m![^/]+$!) {
3864                 if ($alternate) {
3865                         print "<tr class=\"dark\">\n";
3866                 } else {
3867                         print "<tr class=\"light\">\n";
3868                 }
3869                 $alternate ^= 1;
3870
3871                 my $up = $file_name;
3872                 $up =~ s!/?[^/]+$!!;
3873                 undef $up unless $up;
3874                 # based on git_print_tree_entry
3875                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3876                 print '<td class="list">';
3877                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3878                                              file_name=>$up)},
3879                               "..");
3880                 print "</td>\n";
3881                 print "<td class=\"link\"></td>\n";
3882
3883                 print "</tr>\n";
3884         }
3885         foreach my $line (@entries) {
3886                 my %t = parse_ls_tree_line($line, -z => 1);
3887
3888                 if ($alternate) {
3889                         print "<tr class=\"dark\">\n";
3890                 } else {
3891                         print "<tr class=\"light\">\n";
3892                 }
3893                 $alternate ^= 1;
3894
3895                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3896
3897                 print "</tr>\n";
3898         }
3899         print "</table>\n" .
3900               "</div>";
3901         git_footer_html();
3902 }
3903
3904 sub git_snapshot {
3905         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3906         my $have_snapshot = (defined $ctype && defined $suffix);
3907         if (!$have_snapshot) {
3908                 die_error('403 Permission denied', "Permission denied");
3909         }
3910
3911         if (!defined $hash) {
3912                 $hash = git_get_head_hash($project);
3913         }
3914
3915         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3916
3917         print $cgi->header(
3918                 -type => "application/$ctype",
3919                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3920                 -status => '200 OK');
3921
3922         my $git = git_cmd_str();
3923         my $name = $project;
3924         $name =~ s/\047/\047\\\047\047/g;
3925         open my $fd, "-|",
3926                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3927                 or die_error(undef, "Execute git-tar-tree failed");
3928         binmode STDOUT, ':raw';
3929         print <$fd>;
3930         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3931         close $fd;
3932
3933 }
3934
3935 sub git_log {
3936         my $head = git_get_head_hash($project);
3937         if (!defined $hash) {
3938                 $hash = $head;
3939         }
3940         if (!defined $page) {
3941                 $page = 0;
3942         }
3943         my $refs = git_get_references();
3944
3945         my @commitlist = parse_commits($hash, 101, (100 * $page));
3946
3947         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3948
3949         git_header_html();
3950         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3951
3952         if (!@commitlist) {
3953                 my %co = parse_commit($hash);
3954
3955                 git_print_header_div('summary', $project);
3956                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3957         }
3958         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3959         for (my $i = 0; $i <= $to; $i++) {
3960                 my %co = %{$commitlist[$i]};
3961                 next if !%co;
3962                 my $commit = $co{'id'};
3963                 my $ref = format_ref_marker($refs, $commit);
3964                 my %ad = parse_date($co{'author_epoch'});
3965                 git_print_header_div('commit',
3966                                "<span class=\"age\">$co{'age_string'}</span>" .
3967                                esc_html($co{'title'}) . $ref,
3968                                $commit);
3969                 print "<div class=\"title_text\">\n" .
3970                       "<div class=\"log_link\">\n" .
3971                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3972                       " | " .
3973                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3974                       " | " .
3975                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3976                       "<br/>\n" .
3977                       "</div>\n" .
3978                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3979                       "</div>\n";
3980
3981                 print "<div class=\"log_body\">\n";
3982                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3983                 print "</div>\n";
3984         }
3985         if ($#commitlist >= 100) {
3986                 print "<div class=\"page_nav\">\n";
3987                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3988                                -accesskey => "n", -title => "Alt-n"}, "next");
3989                 print "</div>\n";
3990         }
3991         git_footer_html();
3992 }
3993
3994 sub git_commit {
3995         $hash ||= $hash_base || "HEAD";
3996         my %co = parse_commit($hash);
3997         if (!%co) {
3998                 die_error(undef, "Unknown commit object");
3999         }
4000         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4001         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4002
4003         my $parent  = $co{'parent'};
4004         my $parents = $co{'parents'}; # listref
4005
4006         # we need to prepare $formats_nav before any parameter munging
4007         my $formats_nav;
4008         if (!defined $parent) {
4009                 # --root commitdiff
4010                 $formats_nav .= '(initial)';
4011         } elsif (@$parents == 1) {
4012                 # single parent commit
4013                 $formats_nav .=
4014                         '(parent: ' .
4015                         $cgi->a({-href => href(action=>"commit",
4016                                                hash=>$parent)},
4017                                 esc_html(substr($parent, 0, 7))) .
4018                         ')';
4019         } else {
4020                 # merge commit
4021                 $formats_nav .=
4022                         '(merge: ' .
4023                         join(' ', map {
4024                                 $cgi->a({-href => href(action=>"commit",
4025                                                        hash=>$_)},
4026                                         esc_html(substr($_, 0, 7)));
4027                         } @$parents ) .
4028                         ')';
4029         }
4030
4031         if (!defined $parent) {
4032                 $parent = "--root";
4033         }
4034         my @difftree;
4035         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4036                 @diff_opts,
4037                 (@$parents <= 1 ? $parent : '-c'),
4038                 $hash, "--"
4039                 or die_error(undef, "Open git-diff-tree failed");
4040         @difftree = map { chomp; $_ } <$fd>;
4041         close $fd or die_error(undef, "Reading git-diff-tree failed");
4042
4043         # non-textual hash id's can be cached
4044         my $expires;
4045         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4046                 $expires = "+1d";
4047         }
4048         my $refs = git_get_references();
4049         my $ref = format_ref_marker($refs, $co{'id'});
4050
4051         my $have_snapshot = gitweb_have_snapshot();
4052
4053         git_header_html(undef, $expires);
4054         git_print_page_nav('commit', '',
4055                            $hash, $co{'tree'}, $hash,
4056                            $formats_nav);
4057
4058         if (defined $co{'parent'}) {
4059                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4060         } else {
4061                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4062         }
4063         print "<div class=\"title_text\">\n" .
4064               "<table cellspacing=\"0\">\n";
4065         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4066               "<tr>" .
4067               "<td></td><td> $ad{'rfc2822'}";
4068         if ($ad{'hour_local'} < 6) {
4069                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4070                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4071         } else {
4072                 printf(" (%02d:%02d %s)",
4073                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4074         }
4075         print "</td>" .
4076               "</tr>\n";
4077         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4078         print "<tr><td></td><td> $cd{'rfc2822'}" .
4079               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4080               "</td></tr>\n";
4081         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4082         print "<tr>" .
4083               "<td>tree</td>" .
4084               "<td class=\"sha1\">" .
4085               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4086                        class => "list"}, $co{'tree'}) .
4087               "</td>" .
4088               "<td class=\"link\">" .
4089               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4090                       "tree");
4091         if ($have_snapshot) {
4092                 print " | " .
4093                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4094         }
4095         print "</td>" .
4096               "</tr>\n";
4097
4098         foreach my $par (@$parents) {
4099                 print "<tr>" .
4100                       "<td>parent</td>" .
4101                       "<td class=\"sha1\">" .
4102                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4103                                class => "list"}, $par) .
4104                       "</td>" .
4105                       "<td class=\"link\">" .
4106                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4107                       " | " .
4108                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4109                       "</td>" .
4110                       "</tr>\n";
4111         }
4112         print "</table>".
4113               "</div>\n";
4114
4115         print "<div class=\"page_body\">\n";
4116         git_print_log($co{'comment'});
4117         print "</div>\n";
4118
4119         git_difftree_body(\@difftree, $hash, @$parents);
4120
4121         git_footer_html();
4122 }
4123
4124 sub git_object {
4125         # object is defined by:
4126         # - hash or hash_base alone
4127         # - hash_base and file_name
4128         my $type;
4129
4130         # - hash or hash_base alone
4131         if ($hash || ($hash_base && !defined $file_name)) {
4132                 my $object_id = $hash || $hash_base;
4133
4134                 my $git_command = git_cmd_str();
4135                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4136                         or die_error('404 Not Found', "Object does not exist");
4137                 $type = <$fd>;
4138                 chomp $type;
4139                 close $fd
4140                         or die_error('404 Not Found', "Object does not exist");
4141
4142         # - hash_base and file_name
4143         } elsif ($hash_base && defined $file_name) {
4144                 $file_name =~ s,/+$,,;
4145
4146                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4147                         or die_error('404 Not Found', "Base object does not exist");
4148
4149                 # here errors should not hapen
4150                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4151                         or die_error(undef, "Open git-ls-tree failed");
4152                 my $line = <$fd>;
4153                 close $fd;
4154
4155                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4156                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4157                         die_error('404 Not Found', "File or directory for given base does not exist");
4158                 }
4159                 $type = $2;
4160                 $hash = $3;
4161         } else {
4162                 die_error('404 Not Found', "Not enough information to find object");
4163         }
4164
4165         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4166                                           hash=>$hash, hash_base=>$hash_base,
4167                                           file_name=>$file_name),
4168                              -status => '302 Found');
4169 }
4170
4171 sub git_blobdiff {
4172         my $format = shift || 'html';
4173
4174         my $fd;
4175         my @difftree;
4176         my %diffinfo;
4177         my $expires;
4178
4179         # preparing $fd and %diffinfo for git_patchset_body
4180         # new style URI
4181         if (defined $hash_base && defined $hash_parent_base) {
4182                 if (defined $file_name) {
4183                         # read raw output
4184                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4185                                 $hash_parent_base, $hash_base,
4186                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4187                                 or die_error(undef, "Open git-diff-tree failed");
4188                         @difftree = map { chomp; $_ } <$fd>;
4189                         close $fd
4190                                 or die_error(undef, "Reading git-diff-tree failed");
4191                         @difftree
4192                                 or die_error('404 Not Found', "Blob diff not found");
4193
4194                 } elsif (defined $hash &&
4195                          $hash =~ /[0-9a-fA-F]{40}/) {
4196                         # try to find filename from $hash
4197
4198                         # read filtered raw output
4199                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4200                                 $hash_parent_base, $hash_base, "--"
4201                                 or die_error(undef, "Open git-diff-tree failed");
4202                         @difftree =
4203                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4204                                 # $hash == to_id
4205                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4206                                 map { chomp; $_ } <$fd>;
4207                         close $fd
4208                                 or die_error(undef, "Reading git-diff-tree failed");
4209                         @difftree
4210                                 or die_error('404 Not Found', "Blob diff not found");
4211
4212                 } else {
4213                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4214                 }
4215
4216                 if (@difftree > 1) {
4217                         die_error('404 Not Found', "Ambiguous blob diff specification");
4218                 }
4219
4220                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4221                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4222                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4223
4224                 $hash_parent ||= $diffinfo{'from_id'};
4225                 $hash        ||= $diffinfo{'to_id'};
4226
4227                 # non-textual hash id's can be cached
4228                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4229                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4230                         $expires = '+1d';
4231                 }
4232
4233                 # open patch output
4234                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4235                         '-p', ($format eq 'html' ? "--full-index" : ()),
4236                         $hash_parent_base, $hash_base,
4237                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4238                         or die_error(undef, "Open git-diff-tree failed");
4239         }
4240
4241         # old/legacy style URI
4242         if (!%diffinfo && # if new style URI failed
4243             defined $hash && defined $hash_parent) {
4244                 # fake git-diff-tree raw output
4245                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4246                 $diffinfo{'from_id'} = $hash_parent;
4247                 $diffinfo{'to_id'}   = $hash;
4248                 if (defined $file_name) {
4249                         if (defined $file_parent) {
4250                                 $diffinfo{'status'} = '2';
4251                                 $diffinfo{'from_file'} = $file_parent;
4252                                 $diffinfo{'to_file'}   = $file_name;
4253                         } else { # assume not renamed
4254                                 $diffinfo{'status'} = '1';
4255                                 $diffinfo{'from_file'} = $file_name;
4256                                 $diffinfo{'to_file'}   = $file_name;
4257                         }
4258                 } else { # no filename given
4259                         $diffinfo{'status'} = '2';
4260                         $diffinfo{'from_file'} = $hash_parent;
4261                         $diffinfo{'to_file'}   = $hash;
4262                 }
4263
4264                 # non-textual hash id's can be cached
4265                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4266                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4267                         $expires = '+1d';
4268                 }
4269
4270                 # open patch output
4271                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4272                         '-p', ($format eq 'html' ? "--full-index" : ()),
4273                         $hash_parent, $hash, "--"
4274                         or die_error(undef, "Open git-diff failed");
4275         } else  {
4276                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4277                         unless %diffinfo;
4278         }
4279
4280         # header
4281         if ($format eq 'html') {
4282                 my $formats_nav =
4283                         $cgi->a({-href => href(action=>"blobdiff_plain",
4284                                                hash=>$hash, hash_parent=>$hash_parent,
4285                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4286                                                file_name=>$file_name, file_parent=>$file_parent)},
4287                                 "raw");
4288                 git_header_html(undef, $expires);
4289                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4290                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4291                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4292                 } else {
4293                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4294                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4295                 }
4296                 if (defined $file_name) {
4297                         git_print_page_path($file_name, "blob", $hash_base);
4298                 } else {
4299                         print "<div class=\"page_path\"></div>\n";
4300                 }
4301
4302         } elsif ($format eq 'plain') {
4303                 print $cgi->header(
4304                         -type => 'text/plain',
4305                         -charset => 'utf-8',
4306                         -expires => $expires,
4307                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4308
4309                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4310
4311         } else {
4312                 die_error(undef, "Unknown blobdiff format");
4313         }
4314
4315         # patch
4316         if ($format eq 'html') {
4317                 print "<div class=\"page_body\">\n";
4318
4319                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4320                 close $fd;
4321
4322                 print "</div>\n"; # class="page_body"
4323                 git_footer_html();
4324
4325         } else {
4326                 while (my $line = <$fd>) {
4327                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4328                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4329
4330                         print $line;
4331
4332                         last if $line =~ m!^\+\+\+!;
4333                 }
4334                 local $/ = undef;
4335                 print <$fd>;
4336                 close $fd;
4337         }
4338 }
4339
4340 sub git_blobdiff_plain {
4341         git_blobdiff('plain');
4342 }
4343
4344 sub git_commitdiff {
4345         my $format = shift || 'html';
4346         $hash ||= $hash_base || "HEAD";
4347         my %co = parse_commit($hash);
4348         if (!%co) {
4349                 die_error(undef, "Unknown commit object");
4350         }
4351
4352         # we need to prepare $formats_nav before any parameter munging
4353         my $formats_nav;
4354         if ($format eq 'html') {
4355                 $formats_nav =
4356                         $cgi->a({-href => href(action=>"commitdiff_plain",
4357                                                hash=>$hash, hash_parent=>$hash_parent)},
4358                                 "raw");
4359
4360                 if (defined $hash_parent) {
4361                         # commitdiff with two commits given
4362                         my $hash_parent_short = $hash_parent;
4363                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4364                                 $hash_parent_short = substr($hash_parent, 0, 7);
4365                         }
4366                         $formats_nav .=
4367                                 ' (from: ' .
4368                                 $cgi->a({-href => href(action=>"commitdiff",
4369                                                        hash=>$hash_parent)},
4370                                         esc_html($hash_parent_short)) .
4371                                 ')';
4372                 } elsif (!$co{'parent'}) {
4373                         # --root commitdiff
4374                         $formats_nav .= ' (initial)';
4375                 } elsif (scalar @{$co{'parents'}} == 1) {
4376                         # single parent commit
4377                         $formats_nav .=
4378                                 ' (parent: ' .
4379                                 $cgi->a({-href => href(action=>"commitdiff",
4380                                                        hash=>$co{'parent'})},
4381                                         esc_html(substr($co{'parent'}, 0, 7))) .
4382                                 ')';
4383                 } else {
4384                         # merge commit
4385                         $formats_nav .=
4386                                 ' (merge: ' .
4387                                 join(' ', map {
4388                                         $cgi->a({-href => href(action=>"commitdiff",
4389                                                                hash=>$_)},
4390                                                 esc_html(substr($_, 0, 7)));
4391                                 } @{$co{'parents'}} ) .
4392                                 ')';
4393                 }
4394         }
4395
4396         my $hash_parent_param = $hash_parent;
4397         if (!defined $hash_parent) {
4398                 $hash_parent_param =
4399                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4400         }
4401
4402         # read commitdiff
4403         my $fd;
4404         my @difftree;
4405         if ($format eq 'html') {
4406                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4407                         "--no-commit-id", "--patch-with-raw", "--full-index",
4408                         $hash_parent_param, $hash, "--"
4409                         or die_error(undef, "Open git-diff-tree failed");
4410
4411                 while (my $line = <$fd>) {
4412                         chomp $line;
4413                         # empty line ends raw part of diff-tree output
4414                         last unless $line;
4415                         push @difftree, scalar parse_difftree_raw_line($line);
4416                 }
4417
4418         } elsif ($format eq 'plain') {
4419                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4420                         '-p', $hash_parent_param, $hash, "--"
4421                         or die_error(undef, "Open git-diff-tree failed");
4422
4423         } else {
4424                 die_error(undef, "Unknown commitdiff format");
4425         }
4426
4427         # non-textual hash id's can be cached
4428         my $expires;
4429         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4430                 $expires = "+1d";
4431         }
4432
4433         # write commit message
4434         if ($format eq 'html') {
4435                 my $refs = git_get_references();
4436                 my $ref = format_ref_marker($refs, $co{'id'});
4437
4438                 git_header_html(undef, $expires);
4439                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4440                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4441                 git_print_authorship(\%co);
4442                 print "<div class=\"page_body\">\n";
4443                 if (@{$co{'comment'}} > 1) {
4444                         print "<div class=\"log\">\n";
4445                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4446                         print "</div>\n"; # class="log"
4447                 }
4448
4449         } elsif ($format eq 'plain') {
4450                 my $refs = git_get_references("tags");
4451                 my $tagname = git_get_rev_name_tags($hash);
4452                 my $filename = basename($project) . "-$hash.patch";
4453
4454                 print $cgi->header(
4455                         -type => 'text/plain',
4456                         -charset => 'utf-8',
4457                         -expires => $expires,
4458                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4459                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4460                 print <<TEXT;
4461 From: $co{'author'}
4462 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4463 Subject: $co{'title'}
4464 TEXT
4465                 print "X-Git-Tag: $tagname\n" if $tagname;
4466                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4467
4468                 foreach my $line (@{$co{'comment'}}) {
4469                         print "$line\n";
4470                 }
4471                 print "---\n\n";
4472         }
4473
4474         # write patch
4475         if ($format eq 'html') {
4476                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4477                 print "<br/>\n";
4478
4479                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4480                 close $fd;
4481                 print "</div>\n"; # class="page_body"
4482                 git_footer_html();
4483
4484         } elsif ($format eq 'plain') {
4485                 local $/ = undef;
4486                 print <$fd>;
4487                 close $fd
4488                         or print "Reading git-diff-tree failed\n";
4489         }
4490 }
4491
4492 sub git_commitdiff_plain {
4493         git_commitdiff('plain');
4494 }
4495
4496 sub git_history {
4497         if (!defined $hash_base) {
4498                 $hash_base = git_get_head_hash($project);
4499         }
4500         if (!defined $page) {
4501                 $page = 0;
4502         }
4503         my $ftype;
4504         my %co = parse_commit($hash_base);
4505         if (!%co) {
4506                 die_error(undef, "Unknown commit object");
4507         }
4508
4509         my $refs = git_get_references();
4510         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4511
4512         if (!defined $hash && defined $file_name) {
4513                 $hash = git_get_hash_by_path($hash_base, $file_name);
4514         }
4515         if (defined $hash) {
4516                 $ftype = git_get_type($hash);
4517         }
4518
4519         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4520
4521         my $paging_nav = '';
4522         if ($page > 0) {
4523                 $paging_nav .=
4524                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4525                                                file_name=>$file_name)},
4526                                 "first");
4527                 $paging_nav .= " &sdot; " .
4528                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4529                                                file_name=>$file_name, page=>$page-1),
4530                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4531         } else {
4532                 $paging_nav .= "first";
4533                 $paging_nav .= " &sdot; prev";
4534         }
4535         if ($#commitlist >= 100) {
4536                 $paging_nav .= " &sdot; " .
4537                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4538                                                file_name=>$file_name, page=>$page+1),
4539                                  -accesskey => "n", -title => "Alt-n"}, "next");
4540         } else {
4541                 $paging_nav .= " &sdot; next";
4542         }
4543         my $next_link = '';
4544         if ($#commitlist >= 100) {
4545                 $next_link =
4546                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4547                                                file_name=>$file_name, page=>$page+1),
4548                                  -accesskey => "n", -title => "Alt-n"}, "next");
4549         }
4550
4551         git_header_html();
4552         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4553         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4554         git_print_page_path($file_name, $ftype, $hash_base);
4555
4556         git_history_body(\@commitlist, 0, 99,
4557                          $refs, $hash_base, $ftype, $next_link);
4558
4559         git_footer_html();
4560 }
4561
4562 sub git_search {
4563         my ($have_search) = gitweb_check_feature('search');
4564         if (!$have_search) {
4565                 die_error('403 Permission denied', "Permission denied");
4566         }
4567         if (!defined $searchtext) {
4568                 die_error(undef, "Text field empty");
4569         }
4570         if (!defined $hash) {
4571                 $hash = git_get_head_hash($project);
4572         }
4573         my %co = parse_commit($hash);
4574         if (!%co) {
4575                 die_error(undef, "Unknown commit object");
4576         }
4577         if (!defined $page) {
4578                 $page = 0;
4579         }
4580
4581         $searchtype ||= 'commit';
4582         if ($searchtype eq 'pickaxe') {
4583                 # pickaxe may take all resources of your box and run for several minutes
4584                 # with every query - so decide by yourself how public you make this feature
4585                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4586                 if (!$have_pickaxe) {
4587                         die_error('403 Permission denied', "Permission denied");
4588                 }
4589         }
4590
4591         git_header_html();
4592
4593         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4594                 my $greptype;
4595                 if ($searchtype eq 'commit') {
4596                         $greptype = "--grep=";
4597                 } elsif ($searchtype eq 'author') {
4598                         $greptype = "--author=";
4599                 } elsif ($searchtype eq 'committer') {
4600                         $greptype = "--committer=";
4601                 }
4602                 $greptype .= $searchtext;
4603                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4604
4605                 my $paging_nav = '';
4606                 if ($page > 0) {
4607                         $paging_nav .=
4608                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4609                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4610                                         "first");
4611                         $paging_nav .= " &sdot; " .
4612                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4613                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4614                                                        page=>$page-1),
4615                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4616                 } else {
4617                         $paging_nav .= "first";
4618                         $paging_nav .= " &sdot; prev";
4619                 }
4620                 if ($#commitlist >= 100) {
4621                         $paging_nav .= " &sdot; " .
4622                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4623                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4624                                                        page=>$page+1),
4625                                          -accesskey => "n", -title => "Alt-n"}, "next");
4626                 } else {
4627                         $paging_nav .= " &sdot; next";
4628                 }
4629                 my $next_link = '';
4630                 if ($#commitlist >= 100) {
4631                         $next_link =
4632                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4633                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4634                                                        page=>$page+1),
4635                                          -accesskey => "n", -title => "Alt-n"}, "next");
4636                 }
4637
4638                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4639                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4640                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4641         }
4642
4643         if ($searchtype eq 'pickaxe') {
4644                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4645                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4646
4647                 print "<table cellspacing=\"0\">\n";
4648                 my $alternate = 1;
4649                 $/ = "\n";
4650                 my $git_command = git_cmd_str();
4651                 open my $fd, "-|", "$git_command rev-list $hash | " .
4652                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4653                 undef %co;
4654                 my @files;
4655                 while (my $line = <$fd>) {
4656                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4657                                 my %set;
4658                                 $set{'file'} = $6;
4659                                 $set{'from_id'} = $3;
4660                                 $set{'to_id'} = $4;
4661                                 $set{'id'} = $set{'to_id'};
4662                                 if ($set{'id'} =~ m/0{40}/) {
4663                                         $set{'id'} = $set{'from_id'};
4664                                 }
4665                                 if ($set{'id'} =~ m/0{40}/) {
4666                                         next;
4667                                 }
4668                                 push @files, \%set;
4669                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4670                                 if (%co) {
4671                                         if ($alternate) {
4672                                                 print "<tr class=\"dark\">\n";
4673                                         } else {
4674                                                 print "<tr class=\"light\">\n";
4675                                         }
4676                                         $alternate ^= 1;
4677                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4678                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4679                                               "<td>" .
4680                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4681                                                       -class => "list subject"},
4682                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4683                                         while (my $setref = shift @files) {
4684                                                 my %set = %$setref;
4685                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4686                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4687                                                               -class => "list"},
4688                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4689                                                       "<br/>\n";
4690                                         }
4691                                         print "</td>\n" .
4692                                               "<td class=\"link\">" .
4693                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4694                                               " | " .
4695                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4696                                         print "</td>\n" .
4697                                               "</tr>\n";
4698                                 }
4699                                 %co = parse_commit($1);
4700                         }
4701                 }
4702                 close $fd;
4703
4704                 print "</table>\n";
4705         }
4706         git_footer_html();
4707 }
4708
4709 sub git_search_help {
4710         git_header_html();
4711         git_print_page_nav('','', $hash,$hash,$hash);
4712         print <<EOT;
4713 <dl>
4714 <dt><b>commit</b></dt>
4715 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4716 <dt><b>author</b></dt>
4717 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4718 <dt><b>committer</b></dt>
4719 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4720 EOT
4721         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4722         if ($have_pickaxe) {
4723                 print <<EOT;
4724 <dt><b>pickaxe</b></dt>
4725 <dd>All commits that caused the string to appear or disappear from any file (changes that
4726 added, removed or "modified" the string) will be listed. This search can take a while and
4727 takes a lot of strain on the server, so please use it wisely.</dd>
4728 EOT
4729         }
4730         print "</dl>\n";
4731         git_footer_html();
4732 }
4733
4734 sub git_shortlog {
4735         my $head = git_get_head_hash($project);
4736         if (!defined $hash) {
4737                 $hash = $head;
4738         }
4739         if (!defined $page) {
4740                 $page = 0;
4741         }
4742         my $refs = git_get_references();
4743
4744         my @commitlist = parse_commits($hash, 101, (100 * $page));
4745
4746         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4747         my $next_link = '';
4748         if ($#commitlist >= 100) {
4749                 $next_link =
4750                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4751                                  -accesskey => "n", -title => "Alt-n"}, "next");
4752         }
4753
4754         git_header_html();
4755         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4756         git_print_header_div('summary', $project);
4757
4758         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4759
4760         git_footer_html();
4761 }
4762
4763 ## ......................................................................
4764 ## feeds (RSS, Atom; OPML)
4765
4766 sub git_feed {
4767         my $format = shift || 'atom';
4768         my ($have_blame) = gitweb_check_feature('blame');
4769
4770         # Atom: http://www.atomenabled.org/developers/syndication/
4771         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4772         if ($format ne 'rss' && $format ne 'atom') {
4773                 die_error(undef, "Unknown web feed format");
4774         }
4775
4776         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4777         my $head = $hash || 'HEAD';
4778         my @commitlist = parse_commits($head, 150);
4779
4780         my %latest_commit;
4781         my %latest_date;
4782         my $content_type = "application/$format+xml";
4783         if (defined $cgi->http('HTTP_ACCEPT') &&
4784                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4785                 # browser (feed reader) prefers text/xml
4786                 $content_type = 'text/xml';
4787         }
4788         if (defined($commitlist[0])) {
4789                 %latest_commit = %{$commitlist[0]};
4790                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4791                 print $cgi->header(
4792                         -type => $content_type,
4793                         -charset => 'utf-8',
4794                         -last_modified => $latest_date{'rfc2822'});
4795         } else {
4796                 print $cgi->header(
4797                         -type => $content_type,
4798                         -charset => 'utf-8');
4799         }
4800
4801         # Optimization: skip generating the body if client asks only
4802         # for Last-Modified date.
4803         return if ($cgi->request_method() eq 'HEAD');
4804
4805         # header variables
4806         my $title = "$site_name - $project/$action";
4807         my $feed_type = 'log';
4808         if (defined $hash) {
4809                 $title .= " - '$hash'";
4810                 $feed_type = 'branch log';
4811                 if (defined $file_name) {
4812                         $title .= " :: $file_name";
4813                         $feed_type = 'history';
4814                 }
4815         } elsif (defined $file_name) {
4816                 $title .= " - $file_name";
4817                 $feed_type = 'history';
4818         }
4819         $title .= " $feed_type";
4820         my $descr = git_get_project_description($project);
4821         if (defined $descr) {
4822                 $descr = esc_html($descr);
4823         } else {
4824                 $descr = "$project " .
4825                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4826                          " feed";
4827         }
4828         my $owner = git_get_project_owner($project);
4829         $owner = esc_html($owner);
4830
4831         #header
4832         my $alt_url;
4833         if (defined $file_name) {
4834                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4835         } elsif (defined $hash) {
4836                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4837         } else {
4838                 $alt_url = href(-full=>1, action=>"summary");
4839         }
4840         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4841         if ($format eq 'rss') {
4842                 print <<XML;
4843 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4844 <channel>
4845 XML
4846                 print "<title>$title</title>\n" .
4847                       "<link>$alt_url</link>\n" .
4848                       "<description>$descr</description>\n" .
4849                       "<language>en</language>\n";
4850         } elsif ($format eq 'atom') {
4851                 print <<XML;
4852 <feed xmlns="http://www.w3.org/2005/Atom">
4853 XML
4854                 print "<title>$title</title>\n" .
4855                       "<subtitle>$descr</subtitle>\n" .
4856                       '<link rel="alternate" type="text/html" href="' .
4857                       $alt_url . '" />' . "\n" .
4858                       '<link rel="self" type="' . $content_type . '" href="' .
4859                       $cgi->self_url() . '" />' . "\n" .
4860                       "<id>" . href(-full=>1) . "</id>\n" .
4861                       # use project owner for feed author
4862                       "<author><name>$owner</name></author>\n";
4863                 if (defined $favicon) {
4864                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4865                 }
4866                 if (defined $logo_url) {
4867                         # not twice as wide as tall: 72 x 27 pixels
4868                         print "<logo>" . esc_url($logo) . "</logo>\n";
4869                 }
4870                 if (! %latest_date) {
4871                         # dummy date to keep the feed valid until commits trickle in:
4872                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4873                 } else {
4874                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4875                 }
4876         }
4877
4878         # contents
4879         for (my $i = 0; $i <= $#commitlist; $i++) {
4880                 my %co = %{$commitlist[$i]};
4881                 my $commit = $co{'id'};
4882                 # we read 150, we always show 30 and the ones more recent than 48 hours
4883                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4884                         last;
4885                 }
4886                 my %cd = parse_date($co{'author_epoch'});
4887
4888                 # get list of changed files
4889                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4890                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4891                         or next;
4892                 my @difftree = map { chomp; $_ } <$fd>;
4893                 close $fd
4894                         or next;
4895
4896                 # print element (entry, item)
4897                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4898                 if ($format eq 'rss') {
4899                         print "<item>\n" .
4900                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4901                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4902                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4903                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4904                               "<link>$co_url</link>\n" .
4905                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4906                               "<content:encoded>" .
4907                               "<![CDATA[\n";
4908                 } elsif ($format eq 'atom') {
4909                         print "<entry>\n" .
4910                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4911                               "<updated>$cd{'iso-8601'}</updated>\n" .
4912                               "<author>\n" .
4913                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4914                         if ($co{'author_email'}) {
4915                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4916                         }
4917                         print "</author>\n" .
4918                               # use committer for contributor
4919                               "<contributor>\n" .
4920                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4921                         if ($co{'committer_email'}) {
4922                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4923                         }
4924                         print "</contributor>\n" .
4925                               "<published>$cd{'iso-8601'}</published>\n" .
4926                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4927                               "<id>$co_url</id>\n" .
4928                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4929                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4930                 }
4931                 my $comment = $co{'comment'};
4932                 print "<pre>\n";
4933                 foreach my $line (@$comment) {
4934                         $line = esc_html($line);
4935                         print "$line\n";
4936                 }
4937                 print "</pre><ul>\n";
4938                 foreach my $difftree_line (@difftree) {
4939                         my %difftree = parse_difftree_raw_line($difftree_line);
4940                         next if !$difftree{'from_id'};
4941
4942                         my $file = $difftree{'file'} || $difftree{'to_file'};
4943
4944                         print "<li>" .
4945                               "[" .
4946                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4947                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4948                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4949                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4950                                       -title => "diff"}, 'D');
4951                         if ($have_blame) {
4952                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4953                                                              file_name=>$file, hash_base=>$commit),
4954                                               -title => "blame"}, 'B');
4955                         }
4956                         # if this is not a feed of a file history
4957                         if (!defined $file_name || $file_name ne $file) {
4958                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4959                                                              file_name=>$file, hash=>$commit),
4960                                               -title => "history"}, 'H');
4961                         }
4962                         $file = esc_path($file);
4963                         print "] ".
4964                               "$file</li>\n";
4965                 }
4966                 if ($format eq 'rss') {
4967                         print "</ul>]]>\n" .
4968                               "</content:encoded>\n" .
4969                               "</item>\n";
4970                 } elsif ($format eq 'atom') {
4971                         print "</ul>\n</div>\n" .
4972                               "</content>\n" .
4973                               "</entry>\n";
4974                 }
4975         }
4976
4977         # end of feed
4978         if ($format eq 'rss') {
4979                 print "</channel>\n</rss>\n";
4980         }       elsif ($format eq 'atom') {
4981                 print "</feed>\n";
4982         }
4983 }
4984
4985 sub git_rss {
4986         git_feed('rss');
4987 }
4988
4989 sub git_atom {
4990         git_feed('atom');
4991 }
4992
4993 sub git_opml {
4994         my @list = git_get_projects_list();
4995
4996         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4997         print <<XML;
4998 <?xml version="1.0" encoding="utf-8"?>
4999 <opml version="1.0">
5000 <head>
5001   <title>$site_name OPML Export</title>
5002 </head>
5003 <body>
5004 <outline text="git RSS feeds">
5005 XML
5006
5007         foreach my $pr (@list) {
5008                 my %proj = %$pr;
5009                 my $head = git_get_head_hash($proj{'path'});
5010                 if (!defined $head) {
5011                         next;
5012                 }
5013                 $git_dir = "$projectroot/$proj{'path'}";
5014                 my %co = parse_commit($head);
5015                 if (!%co) {
5016                         next;
5017                 }
5018
5019                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5020                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5021                 my $html = "$my_url?p=$proj{'path'};a=summary";
5022                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5023         }
5024         print <<XML;
5025 </outline>
5026 </body>
5027 </opml>
5028 XML
5029 }