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