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 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  43
  44 # html text to include at home page
  45 our $home_text = "++GITWEB_HOMETEXT++";
  46
  47 # URI of default stylesheet
  48 our $stylesheet = "++GITWEB_CSS++";
  49 # URI of GIT logo
  50 our $logo = "++GITWEB_LOGO++";
  51 # URI of GIT favicon, assumed to be image/png type
  52 our $favicon = "++GITWEB_FAVICON++";
  53
  54 # source of projects list
  55 our $projects_list = "++GITWEB_LIST++";
  56
  57 # show repository only if this file exists
  58 # (only effective if this variable evaluates to true)
  59 our $export_ok = "++GITWEB_EXPORT_OK++";
  60
  61 # only allow viewing of repositories also shown on the overview page
  62 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  63
  64 # list of git base URLs used for URL to where fetch project from,
  65 # i.e. full URL is "$git_base_url/$project"
  66 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  67
  68 # default blob_plain mimetype and default charset for text/plain blob
  69 our $default_blob_plain_mimetype = 'text/plain';
  70 our $default_text_plain_charset  = undef;
  71
  72 # file to use for guessing MIME types before trying /etc/mime.types
  73 # (relative to the current git repository)
  74 our $mimetypes_file = undef;
  75
  76 # You define site-wide feature defaults here; override them with
  77 # $GITWEB_CONFIG as necessary.
  78 our %feature = (
  79         # feature => {
  80         #       'sub' => feature-sub (subroutine),
  81         #       'override' => allow-override (boolean),
  82         #       'default' => [ default options...] (array reference)}
  83         #
  84         # if feature is overridable (it means that allow-override has true value,
  85         # then feature-sub will be called with default options as parameters;
  86         # return value of feature-sub indicates if to enable specified feature
  87         #
  88         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  89
  90         'blame' => {
  91                 'sub' => \&feature_blame,
  92                 'override' => 0,
  93                 'default' => [0]},
  94
  95         'snapshot' => {
  96                 'sub' => \&feature_snapshot,
  97                 'override' => 0,
  98                 #         => [content-encoding, suffix, program]
  99                 'default' => ['x-gzip', 'gz', 'gzip']},
 100
 101         'pickaxe' => {
 102                 'sub' => \&feature_pickaxe,
 103                 'override' => 0,
 104                 'default' => [1]},
 105 );
 106
 107 sub gitweb_check_feature {
 108         my ($name) = @_;
 109         return unless exists $feature{$name};
 110         my ($sub, $override, @defaults) = (
 111                 $feature{$name}{'sub'},
 112                 $feature{$name}{'override'},
 113                 @{$feature{$name}{'default'}});
 114         if (!$override) { return @defaults; }
 115         return $sub->(@defaults);
 116 }
 117
 118 # To enable system wide have in $GITWEB_CONFIG
 119 # $feature{'blame'}{'default'} = [1];
 120 # To have project specific config enable override in $GITWEB_CONFIG
 121 # $feature{'blame'}{'override'} = 1;
 122 # and in project config gitweb.blame = 0|1;
 123
 124 sub feature_blame {
 125         my ($val) = git_get_project_config('blame', '--bool');
 126
 127         if ($val eq 'true') {
 128                 return 1;
 129         } elsif ($val eq 'false') {
 130                 return 0;
 131         }
 132
 133         return $_[0];
 134 }
 135
 136 # To disable system wide have in $GITWEB_CONFIG
 137 # $feature{'snapshot'}{'default'} = [undef];
 138 # To have project specific config enable override in $GITWEB_CONFIG
 139 # $feature{'blame'}{'override'} = 1;
 140 # and in project config  gitweb.snapshot = none|gzip|bzip2
 141
 142 sub feature_snapshot {
 143         my ($ctype, $suffix, $command) = @_;
 144
 145         my ($val) = git_get_project_config('snapshot');
 146
 147         if ($val eq 'gzip') {
 148                 return ('x-gzip', 'gz', 'gzip');
 149         } elsif ($val eq 'bzip2') {
 150                 return ('x-bzip2', 'bz2', 'bzip2');
 151         } elsif ($val eq 'none') {
 152                 return ();
 153         }
 154
 155         return ($ctype, $suffix, $command);
 156 }
 157
 158 sub gitweb_have_snapshot {
 159         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 160         my $have_snapshot = (defined $ctype && defined $suffix);
 161
 162         return $have_snapshot;
 163 }
 164
 165 # To enable system wide have in $GITWEB_CONFIG
 166 # $feature{'pickaxe'}{'default'} = [1];
 167 # To have project specific config enable override in $GITWEB_CONFIG
 168 # $feature{'pickaxe'}{'override'} = 1;
 169 # and in project config gitweb.pickaxe = 0|1;
 170
 171 sub feature_pickaxe {
 172         my ($val) = git_get_project_config('pickaxe', '--bool');
 173
 174         if ($val eq 'true') {
 175                 return (1);
 176         } elsif ($val eq 'false') {
 177                 return (0);
 178         }
 179
 180         return ($_[0]);
 181 }
 182
 183 # rename detection options for git-diff and git-diff-tree
 184 # - default is '-M', with the cost proportional to
 185 #   (number of removed files) * (number of new files).
 186 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 187 #   (number of changed files + number of removed files) * (number of new files)
 188 # - even more costly is '-C', '--find-copies-harder' with cost
 189 #   (number of files in the original tree) * (number of new files)
 190 # - one might want to include '-B' option, e.g. '-B', '-M'
 191 our @diff_opts = ('-M'); # taken from git_commit
 192
 193 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 194 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 195
 196 # version of the core git binary
 197 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 198
 199 $projects_list ||= $projectroot;
 200
 201 # ======================================================================
 202 # input validation and dispatch
 203 our $action = $cgi->param('a');
 204 if (defined $action) {
 205         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 206                 die_error(undef, "Invalid action parameter");
 207         }
 208 }
 209
 210 # parameters which are pathnames
 211 our $project = $cgi->param('p');
 212 if (defined $project) {
 213         if (!validate_pathname($project) ||
 214             !(-d "$projectroot/$project") ||
 215             !(-e "$projectroot/$project/HEAD") ||
 216             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 217             ($strict_export && !project_in_list($project))) {
 218                 undef $project;
 219                 die_error(undef, "No such project");
 220         }
 221 }
 222
 223 our $file_name = $cgi->param('f');
 224 if (defined $file_name) {
 225         if (!validate_pathname($file_name)) {
 226                 die_error(undef, "Invalid file parameter");
 227         }
 228 }
 229
 230 our $file_parent = $cgi->param('fp');
 231 if (defined $file_parent) {
 232         if (!validate_pathname($file_parent)) {
 233                 die_error(undef, "Invalid file parent parameter");
 234         }
 235 }
 236
 237 # parameters which are refnames
 238 our $hash = $cgi->param('h');
 239 if (defined $hash) {
 240         if (!validate_refname($hash)) {
 241                 die_error(undef, "Invalid hash parameter");
 242         }
 243 }
 244
 245 our $hash_parent = $cgi->param('hp');
 246 if (defined $hash_parent) {
 247         if (!validate_refname($hash_parent)) {
 248                 die_error(undef, "Invalid hash parent parameter");
 249         }
 250 }
 251
 252 our $hash_base = $cgi->param('hb');
 253 if (defined $hash_base) {
 254         if (!validate_refname($hash_base)) {
 255                 die_error(undef, "Invalid hash base parameter");
 256         }
 257 }
 258
 259 our $hash_parent_base = $cgi->param('hpb');
 260 if (defined $hash_parent_base) {
 261         if (!validate_refname($hash_parent_base)) {
 262                 die_error(undef, "Invalid hash parent base parameter");
 263         }
 264 }
 265
 266 # other parameters
 267 our $page = $cgi->param('pg');
 268 if (defined $page) {
 269         if ($page =~ m/[^0-9]/) {
 270                 die_error(undef, "Invalid page parameter");
 271         }
 272 }
 273
 274 our $searchtext = $cgi->param('s');
 275 if (defined $searchtext) {
 276         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 277                 die_error(undef, "Invalid search parameter");
 278         }
 279         $searchtext = quotemeta $searchtext;
 280 }
 281
 282 # now read PATH_INFO and use it as alternative to parameters
 283 sub evaluate_path_info {
 284         return if defined $project;
 285         my $path_info = $ENV{"PATH_INFO"};
 286         return if !$path_info;
 287         $path_info =~ s,^/+,,;
 288         return if !$path_info;
 289         # find which part of PATH_INFO is project
 290         $project = $path_info;
 291         $project =~ s,/+$,,;
 292         while ($project && !-e "$projectroot/$project/HEAD") {
 293                 $project =~ s,/*[^/]*$,,;
 294         }
 295         # validate project
 296         $project = validate_pathname($project);
 297         if (!$project ||
 298             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 299             ($strict_export && !project_in_list($project))) {
 300                 undef $project;
 301                 return;
 302         }
 303         # do not change any parameters if an action is given using the query string
 304         return if $action;
 305         $path_info =~ s,^$project/*,,;
 306         my ($refname, $pathname) = split(/:/, $path_info, 2);
 307         if (defined $pathname) {
 308                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 309                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 310                 $pathname =~ s,^/+,,;
 311                 if (!$pathname || substr($pathname, -1) eq "/") {
 312                         $action  ||= "tree";
 313                         $pathname =~ s,/$,,;
 314                 } else {
 315                         $action  ||= "blob_plain";
 316                 }
 317                 $hash_base ||= validate_refname($refname);
 318                 $file_name ||= validate_pathname($pathname);
 319         } elsif (defined $refname) {
 320                 # we got "project.git/branch"
 321                 $action ||= "shortlog";
 322                 $hash   ||= validate_refname($refname);
 323         }
 324 }
 325 evaluate_path_info();
 326
 327 # path to the current git repository
 328 our $git_dir;
 329 $git_dir = "$projectroot/$project" if $project;
 330
 331 # dispatch
 332 my %actions = (
 333         "blame" => \&git_blame2,
 334         "blobdiff" => \&git_blobdiff,
 335         "blobdiff_plain" => \&git_blobdiff_plain,
 336         "blob" => \&git_blob,
 337         "blob_plain" => \&git_blob_plain,
 338         "commitdiff" => \&git_commitdiff,
 339         "commitdiff_plain" => \&git_commitdiff_plain,
 340         "commit" => \&git_commit,
 341         "heads" => \&git_heads,
 342         "history" => \&git_history,
 343         "log" => \&git_log,
 344         "rss" => \&git_rss,
 345         "search" => \&git_search,
 346         "shortlog" => \&git_shortlog,
 347         "summary" => \&git_summary,
 348         "tag" => \&git_tag,
 349         "tags" => \&git_tags,
 350         "tree" => \&git_tree,
 351         "snapshot" => \&git_snapshot,
 352         # those below don't need $project
 353         "opml" => \&git_opml,
 354         "project_list" => \&git_project_list,
 355         "project_index" => \&git_project_index,
 356 );
 357
 358 if (defined $project) {
 359         $action ||= 'summary';
 360 } else {
 361         $action ||= 'project_list';
 362 }
 363 if (!defined($actions{$action})) {
 364         die_error(undef, "Unknown action");
 365 }
 366 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 367     !$project) {
 368         die_error(undef, "Project needed");
 369 }
 370 $actions{$action}->();
 371 exit;
 372
 373 ## ======================================================================
 374 ## action links
 375
 376 sub href(%) {
 377         my %params = @_;
 378
 379         my @mapping = (
 380                 project => "p",
 381                 action => "a",
 382                 file_name => "f",
 383                 file_parent => "fp",
 384                 hash => "h",
 385                 hash_parent => "hp",
 386                 hash_base => "hb",
 387                 hash_parent_base => "hpb",
 388                 page => "pg",
 389                 order => "o",
 390                 searchtext => "s",
 391         );
 392         my %mapping = @mapping;
 393
 394         $params{'project'} = $project unless exists $params{'project'};
 395
 396         my @result = ();
 397         for (my $i = 0; $i < @mapping; $i += 2) {
 398                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 399                 if (defined $params{$name}) {
 400                         push @result, $symbol . "=" . esc_param($params{$name});
 401                 }
 402         }
 403         return "$my_uri?" . join(';', @result);
 404 }
 405
 406
 407 ## ======================================================================
 408 ## validation, quoting/unquoting and escaping
 409
 410 sub validate_pathname {
 411         my $input = shift || return undef;
 412
 413         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 414         # at the beginning, at the end, and between slashes.
 415         # also this catches doubled slashes
 416         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 417                 return undef;
 418         }
 419         # no null characters
 420         if ($input =~ m!\0!) {
 421                 return undef;
 422         }
 423         return $input;
 424 }
 425
 426 sub validate_refname {
 427         my $input = shift || return undef;
 428
 429         # textual hashes are O.K.
 430         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 431                 return $input;
 432         }
 433         # it must be correct pathname
 434         $input = validate_pathname($input)
 435                 or return undef;
 436         # restrictions on ref name according to git-check-ref-format
 437         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 438                 return undef;
 439         }
 440         return $input;
 441 }
 442
 443 # quote unsafe chars, but keep the slash, even when it's not
 444 # correct, but quoted slashes look too horrible in bookmarks
 445 sub esc_param {
 446         my $str = shift;
 447         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 448         $str =~ s/\+/%2B/g;
 449         $str =~ s/ /\+/g;
 450         return $str;
 451 }
 452
 453 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 454 sub esc_url {
 455         my $str = shift;
 456         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 457         $str =~ s/\+/%2B/g;
 458         $str =~ s/ /\+/g;
 459         return $str;
 460 }
 461
 462 # replace invalid utf8 character with SUBSTITUTION sequence
 463 sub esc_html {
 464         my $str = shift;
 465         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 466         $str = escapeHTML($str);
 467         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 468         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 469         return $str;
 470 }
 471
 472 # git may return quoted and escaped filenames
 473 sub unquote {
 474         my $str = shift;
 475         if ($str =~ m/^"(.*)"$/) {
 476                 $str = $1;
 477                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 478         }
 479         return $str;
 480 }
 481
 482 # escape tabs (convert tabs to spaces)
 483 sub untabify {
 484         my $line = shift;
 485
 486         while ((my $pos = index($line, "\t")) != -1) {
 487                 if (my $count = (8 - ($pos % 8))) {
 488                         my $spaces = ' ' x $count;
 489                         $line =~ s/\t/$spaces/;
 490                 }
 491         }
 492
 493         return $line;
 494 }
 495
 496 sub project_in_list {
 497         my $project = shift;
 498         my @list = git_get_projects_list();
 499         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 500 }
 501
 502 ## ----------------------------------------------------------------------
 503 ## HTML aware string manipulation
 504
 505 sub chop_str {
 506         my $str = shift;
 507         my $len = shift;
 508         my $add_len = shift || 10;
 509
 510         # allow only $len chars, but don't cut a word if it would fit in $add_len
 511         # if it doesn't fit, cut it if it's still longer than the dots we would add
 512         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 513         my $body = $1;
 514         my $tail = $2;
 515         if (length($tail) > 4) {
 516                 $tail = " ...";
 517                 $body =~ s/&[^;]*$//; # remove chopped character entities
 518         }
 519         return "$body$tail";
 520 }
 521
 522 ## ----------------------------------------------------------------------
 523 ## functions returning short strings
 524
 525 # CSS class for given age value (in seconds)
 526 sub age_class {
 527         my $age = shift;
 528
 529         if ($age < 60*60*2) {
 530                 return "age0";
 531         } elsif ($age < 60*60*24*2) {
 532                 return "age1";
 533         } else {
 534                 return "age2";
 535         }
 536 }
 537
 538 # convert age in seconds to "nn units ago" string
 539 sub age_string {
 540         my $age = shift;
 541         my $age_str;
 542
 543         if ($age > 60*60*24*365*2) {
 544                 $age_str = (int $age/60/60/24/365);
 545                 $age_str .= " years ago";
 546         } elsif ($age > 60*60*24*(365/12)*2) {
 547                 $age_str = int $age/60/60/24/(365/12);
 548                 $age_str .= " months ago";
 549         } elsif ($age > 60*60*24*7*2) {
 550                 $age_str = int $age/60/60/24/7;
 551                 $age_str .= " weeks ago";
 552         } elsif ($age > 60*60*24*2) {
 553                 $age_str = int $age/60/60/24;
 554                 $age_str .= " days ago";
 555         } elsif ($age > 60*60*2) {
 556                 $age_str = int $age/60/60;
 557                 $age_str .= " hours ago";
 558         } elsif ($age > 60*2) {
 559                 $age_str = int $age/60;
 560                 $age_str .= " min ago";
 561         } elsif ($age > 2) {
 562                 $age_str = int $age;
 563                 $age_str .= " sec ago";
 564         } else {
 565                 $age_str .= " right now";
 566         }
 567         return $age_str;
 568 }
 569
 570 # convert file mode in octal to symbolic file mode string
 571 sub mode_str {
 572         my $mode = oct shift;
 573
 574         if (S_ISDIR($mode & S_IFMT)) {
 575                 return 'drwxr-xr-x';
 576         } elsif (S_ISLNK($mode)) {
 577                 return 'lrwxrwxrwx';
 578         } elsif (S_ISREG($mode)) {
 579                 # git cares only about the executable bit
 580                 if ($mode & S_IXUSR) {
 581                         return '-rwxr-xr-x';
 582                 } else {
 583                         return '-rw-r--r--';
 584                 };
 585         } else {
 586                 return '----------';
 587         }
 588 }
 589
 590 # convert file mode in octal to file type string
 591 sub file_type {
 592         my $mode = shift;
 593
 594         if ($mode !~ m/^[0-7]+$/) {
 595                 return $mode;
 596         } else {
 597                 $mode = oct $mode;
 598         }
 599
 600         if (S_ISDIR($mode & S_IFMT)) {
 601                 return "directory";
 602         } elsif (S_ISLNK($mode)) {
 603                 return "symlink";
 604         } elsif (S_ISREG($mode)) {
 605                 return "file";
 606         } else {
 607                 return "unknown";
 608         }
 609 }
 610
 611 ## ----------------------------------------------------------------------
 612 ## functions returning short HTML fragments, or transforming HTML fragments
 613 ## which don't beling to other sections
 614
 615 # format line of commit message or tag comment
 616 sub format_log_line_html {
 617         my $line = shift;
 618
 619         $line = esc_html($line);
 620         $line =~ s/ /&nbsp;/g;
 621         if ($line =~ m/([0-9a-fA-F]{40})/) {
 622                 my $hash_text = $1;
 623                 if (git_get_type($hash_text) eq "commit") {
 624                         my $link =
 625                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 626                                         -class => "text"}, $hash_text);
 627                         $line =~ s/$hash_text/$link/;
 628                 }
 629         }
 630         return $line;
 631 }
 632
 633 # format marker of refs pointing to given object
 634 sub format_ref_marker {
 635         my ($refs, $id) = @_;
 636         my $markers = '';
 637
 638         if (defined $refs->{$id}) {
 639                 foreach my $ref (@{$refs->{$id}}) {
 640                         my ($type, $name) = qw();
 641                         # e.g. tags/v2.6.11 or heads/next
 642                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 643                                 $type = $1;
 644                                 $name = $2;
 645                         } else {
 646                                 $type = "ref";
 647                                 $name = $ref;
 648                         }
 649
 650                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 651                 }
 652         }
 653
 654         if ($markers) {
 655                 return ' <span class="refs">'. $markers . '</span>';
 656         } else {
 657                 return "";
 658         }
 659 }
 660
 661 # format, perhaps shortened and with markers, title line
 662 sub format_subject_html {
 663         my ($long, $short, $href, $extra) = @_;
 664         $extra = '' unless defined($extra);
 665
 666         if (length($short) < length($long)) {
 667                 return $cgi->a({-href => $href, -class => "list subject",
 668                                 -title => decode("utf8", $long, Encode::FB_DEFAULT)},
 669                        esc_html($short) . $extra);
 670         } else {
 671                 return $cgi->a({-href => $href, -class => "list subject"},
 672                        esc_html($long)  . $extra);
 673         }
 674 }
 675
 676 sub format_diff_line {
 677         my $line = shift;
 678         my $char = substr($line, 0, 1);
 679         my $diff_class = "";
 680
 681         chomp $line;
 682
 683         if ($char eq '+') {
 684                 $diff_class = " add";
 685         } elsif ($char eq "-") {
 686                 $diff_class = " rem";
 687         } elsif ($char eq "@") {
 688                 $diff_class = " chunk_header";
 689         } elsif ($char eq "\\") {
 690                 $diff_class = " incomplete";
 691         }
 692         $line = untabify($line);
 693         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 694 }
 695
 696 ## ----------------------------------------------------------------------
 697 ## git utility subroutines, invoking git commands
 698
 699 # returns path to the core git executable and the --git-dir parameter as list
 700 sub git_cmd {
 701         return $GIT, '--git-dir='.$git_dir;
 702 }
 703
 704 # returns path to the core git executable and the --git-dir parameter as string
 705 sub git_cmd_str {
 706         return join(' ', git_cmd());
 707 }
 708
 709 # get HEAD ref of given project as hash
 710 sub git_get_head_hash {
 711         my $project = shift;
 712         my $o_git_dir = $git_dir;
 713         my $retval = undef;
 714         $git_dir = "$projectroot/$project";
 715         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 716                 my $head = <$fd>;
 717                 close $fd;
 718                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 719                         $retval = $1;
 720                 }
 721         }
 722         if (defined $o_git_dir) {
 723                 $git_dir = $o_git_dir;
 724         }
 725         return $retval;
 726 }
 727
 728 # get type of given object
 729 sub git_get_type {
 730         my $hash = shift;
 731
 732         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 733         my $type = <$fd>;
 734         close $fd or return;
 735         chomp $type;
 736         return $type;
 737 }
 738
 739 sub git_get_project_config {
 740         my ($key, $type) = @_;
 741
 742         return unless ($key);
 743         $key =~ s/^gitweb\.//;
 744         return if ($key =~ m/\W/);
 745
 746         my @x = (git_cmd(), 'repo-config');
 747         if (defined $type) { push @x, $type; }
 748         push @x, "--get";
 749         push @x, "gitweb.$key";
 750         my $val = qx(@x);
 751         chomp $val;
 752         return ($val);
 753 }
 754
 755 # get hash of given path at given ref
 756 sub git_get_hash_by_path {
 757         my $base = shift;
 758         my $path = shift || return undef;
 759         my $type = shift;
 760
 761         $path =~ s,/+$,,;
 762
 763         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 764                 or die_error(undef, "Open git-ls-tree failed");
 765         my $line = <$fd>;
 766         close $fd or return undef;
 767
 768         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 769         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 770         if (defined $type && $type ne $2) {
 771                 # type doesn't match
 772                 return undef;
 773         }
 774         return $3;
 775 }
 776
 777 ## ......................................................................
 778 ## git utility functions, directly accessing git repository
 779
 780 sub git_get_project_description {
 781         my $path = shift;
 782
 783         open my $fd, "$projectroot/$path/description" or return undef;
 784         my $descr = <$fd>;
 785         close $fd;
 786         chomp $descr;
 787         return $descr;
 788 }
 789
 790 sub git_get_project_url_list {
 791         my $path = shift;
 792
 793         open my $fd, "$projectroot/$path/cloneurl" or return;
 794         my @git_project_url_list = map { chomp; $_ } <$fd>;
 795         close $fd;
 796
 797         return wantarray ? @git_project_url_list : \@git_project_url_list;
 798 }
 799
 800 sub git_get_projects_list {
 801         my @list;
 802
 803         if (-d $projects_list) {
 804                 # search in directory
 805                 my $dir = $projects_list;
 806                 my $pfxlen = length("$dir");
 807
 808                 File::Find::find({
 809                         follow_fast => 1, # follow symbolic links
 810                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 811                         wanted => sub {
 812                                 # skip project-list toplevel, if we get it.
 813                                 return if (m!^[/.]$!);
 814                                 # only directories can be git repositories
 815                                 return unless (-d $_);
 816
 817                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 818                                 # we check related file in $projectroot
 819                                 if (-e "$projectroot/$subdir/HEAD" && (!$export_ok ||
 820                                     -e "$projectroot/$subdir/$export_ok")) {
 821                                         push @list, { path => $subdir };
 822                                         $File::Find::prune = 1;
 823                                 }
 824                         },
 825                 }, "$dir");
 826
 827         } elsif (-f $projects_list) {
 828                 # read from file(url-encoded):
 829                 # 'git%2Fgit.git Linus+Torvalds'
 830                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 831                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 832                 open my ($fd), $projects_list or return;
 833                 while (my $line = <$fd>) {
 834                         chomp $line;
 835                         my ($path, $owner) = split ' ', $line;
 836                         $path = unescape($path);
 837                         $owner = unescape($owner);
 838                         if (!defined $path) {
 839                                 next;
 840                         }
 841                         if (-e "$projectroot/$path/HEAD" && (!$export_ok ||
 842                             -e "$projectroot/$path/$export_ok")) {
 843                                 my $pr = {
 844                                         path => $path,
 845                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 846                                 };
 847                                 push @list, $pr
 848                         }
 849                 }
 850                 close $fd;
 851         }
 852         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 853         return @list;
 854 }
 855
 856 sub git_get_project_owner {
 857         my $project = shift;
 858         my $owner;
 859
 860         return undef unless $project;
 861
 862         # read from file (url-encoded):
 863         # 'git%2Fgit.git Linus+Torvalds'
 864         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 865         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 866         if (-f $projects_list) {
 867                 open (my $fd , $projects_list);
 868                 while (my $line = <$fd>) {
 869                         chomp $line;
 870                         my ($pr, $ow) = split ' ', $line;
 871                         $pr = unescape($pr);
 872                         $ow = unescape($ow);
 873                         if ($pr eq $project) {
 874                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 875                                 last;
 876                         }
 877                 }
 878                 close $fd;
 879         }
 880         if (!defined $owner) {
 881                 $owner = get_file_owner("$projectroot/$project");
 882         }
 883
 884         return $owner;
 885 }
 886
 887 sub git_get_references {
 888         my $type = shift || "";
 889         my %refs;
 890         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 891         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 892         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
 893                 or return;
 894
 895         while (my $line = <$fd>) {
 896                 chomp $line;
 897                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 898                         if (defined $refs{$1}) {
 899                                 push @{$refs{$1}}, $2;
 900                         } else {
 901                                 $refs{$1} = [ $2 ];
 902                         }
 903                 }
 904         }
 905         close $fd or return;
 906         return \%refs;
 907 }
 908
 909 sub git_get_rev_name_tags {
 910         my $hash = shift || return undef;
 911
 912         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 913                 or return;
 914         my $name_rev = <$fd>;
 915         close $fd;
 916
 917         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 918                 return $1;
 919         } else {
 920                 # catches also '$hash undefined' output
 921                 return undef;
 922         }
 923 }
 924
 925 ## ----------------------------------------------------------------------
 926 ## parse to hash functions
 927
 928 sub parse_date {
 929         my $epoch = shift;
 930         my $tz = shift || "-0000";
 931
 932         my %date;
 933         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 934         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 935         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 936         $date{'hour'} = $hour;
 937         $date{'minute'} = $min;
 938         $date{'mday'} = $mday;
 939         $date{'day'} = $days[$wday];
 940         $date{'month'} = $months[$mon];
 941         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 942                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 943         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 944                              $mday, $months[$mon], $hour ,$min;
 945
 946         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 947         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 948         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 949         $date{'hour_local'} = $hour;
 950         $date{'minute_local'} = $min;
 951         $date{'tz_local'} = $tz;
 952         return %date;
 953 }
 954
 955 sub parse_tag {
 956         my $tag_id = shift;
 957         my %tag;
 958         my @comment;
 959
 960         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 961         $tag{'id'} = $tag_id;
 962         while (my $line = <$fd>) {
 963                 chomp $line;
 964                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 965                         $tag{'object'} = $1;
 966                 } elsif ($line =~ m/^type (.+)$/) {
 967                         $tag{'type'} = $1;
 968                 } elsif ($line =~ m/^tag (.+)$/) {
 969                         $tag{'name'} = $1;
 970                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 971                         $tag{'author'} = $1;
 972                         $tag{'epoch'} = $2;
 973                         $tag{'tz'} = $3;
 974                 } elsif ($line =~ m/--BEGIN/) {
 975                         push @comment, $line;
 976                         last;
 977                 } elsif ($line eq "") {
 978                         last;
 979                 }
 980         }
 981         push @comment, <$fd>;
 982         $tag{'comment'} = \@comment;
 983         close $fd or return;
 984         if (!defined $tag{'name'}) {
 985                 return
 986         };
 987         return %tag
 988 }
 989
 990 sub parse_commit {
 991         my $commit_id = shift;
 992         my $commit_text = shift;
 993
 994         my @commit_lines;
 995         my %co;
 996
 997         if (defined $commit_text) {
 998                 @commit_lines = @$commit_text;
 999         } else {
1000                 $/ = "\0";
1001                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
1002                         or return;
1003                 @commit_lines = split '\n', <$fd>;
1004                 close $fd or return;
1005                 $/ = "\n";
1006                 pop @commit_lines;
1007         }
1008         my $header = shift @commit_lines;
1009         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1010                 return;
1011         }
1012         ($co{'id'}, my @parents) = split ' ', $header;
1013         $co{'parents'} = \@parents;
1014         $co{'parent'} = $parents[0];
1015         while (my $line = shift @commit_lines) {
1016                 last if $line eq "\n";
1017                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1018                         $co{'tree'} = $1;
1019                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1020                         $co{'author'} = $1;
1021                         $co{'author_epoch'} = $2;
1022                         $co{'author_tz'} = $3;
1023                         if ($co{'author'} =~ m/^([^<]+) </) {
1024                                 $co{'author_name'} = $1;
1025                         } else {
1026                                 $co{'author_name'} = $co{'author'};
1027                         }
1028                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1029                         $co{'committer'} = $1;
1030                         $co{'committer_epoch'} = $2;
1031                         $co{'committer_tz'} = $3;
1032                         $co{'committer_name'} = $co{'committer'};
1033                         $co{'committer_name'} =~ s/ <.*//;
1034                 }
1035         }
1036         if (!defined $co{'tree'}) {
1037                 return;
1038         };
1039
1040         foreach my $title (@commit_lines) {
1041                 $title =~ s/^    //;
1042                 if ($title ne "") {
1043                         $co{'title'} = chop_str($title, 80, 5);
1044                         # remove leading stuff of merges to make the interesting part visible
1045                         if (length($title) > 50) {
1046                                 $title =~ s/^Automatic //;
1047                                 $title =~ s/^merge (of|with) /Merge ... /i;
1048                                 if (length($title) > 50) {
1049                                         $title =~ s/(http|rsync):\/\///;
1050                                 }
1051                                 if (length($title) > 50) {
1052                                         $title =~ s/(master|www|rsync)\.//;
1053                                 }
1054                                 if (length($title) > 50) {
1055                                         $title =~ s/kernel.org:?//;
1056                                 }
1057                                 if (length($title) > 50) {
1058                                         $title =~ s/\/pub\/scm//;
1059                                 }
1060                         }
1061                         $co{'title_short'} = chop_str($title, 50, 5);
1062                         last;
1063                 }
1064         }
1065         # remove added spaces
1066         foreach my $line (@commit_lines) {
1067                 $line =~ s/^    //;
1068         }
1069         $co{'comment'} = \@commit_lines;
1070
1071         my $age = time - $co{'committer_epoch'};
1072         $co{'age'} = $age;
1073         $co{'age_string'} = age_string($age);
1074         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1075         if ($age > 60*60*24*7*2) {
1076                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1077                 $co{'age_string_age'} = $co{'age_string'};
1078         } else {
1079                 $co{'age_string_date'} = $co{'age_string'};
1080                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1081         }
1082         return %co;
1083 }
1084
1085 # parse ref from ref_file, given by ref_id, with given type
1086 sub parse_ref {
1087         my $ref_file = shift;
1088         my $ref_id = shift;
1089         my $type = shift || git_get_type($ref_id);
1090         my %ref_item;
1091
1092         $ref_item{'type'} = $type;
1093         $ref_item{'id'} = $ref_id;
1094         $ref_item{'epoch'} = 0;
1095         $ref_item{'age'} = "unknown";
1096         if ($type eq "tag") {
1097                 my %tag = parse_tag($ref_id);
1098                 $ref_item{'comment'} = $tag{'comment'};
1099                 if ($tag{'type'} eq "commit") {
1100                         my %co = parse_commit($tag{'object'});
1101                         $ref_item{'epoch'} = $co{'committer_epoch'};
1102                         $ref_item{'age'} = $co{'age_string'};
1103                 } elsif (defined($tag{'epoch'})) {
1104                         my $age = time - $tag{'epoch'};
1105                         $ref_item{'epoch'} = $tag{'epoch'};
1106                         $ref_item{'age'} = age_string($age);
1107                 }
1108                 $ref_item{'reftype'} = $tag{'type'};
1109                 $ref_item{'name'} = $tag{'name'};
1110                 $ref_item{'refid'} = $tag{'object'};
1111         } elsif ($type eq "commit"){
1112                 my %co = parse_commit($ref_id);
1113                 $ref_item{'reftype'} = "commit";
1114                 $ref_item{'name'} = $ref_file;
1115                 $ref_item{'title'} = $co{'title'};
1116                 $ref_item{'refid'} = $ref_id;
1117                 $ref_item{'epoch'} = $co{'committer_epoch'};
1118                 $ref_item{'age'} = $co{'age_string'};
1119         } else {
1120                 $ref_item{'reftype'} = $type;
1121                 $ref_item{'name'} = $ref_file;
1122                 $ref_item{'refid'} = $ref_id;
1123         }
1124
1125         return %ref_item;
1126 }
1127
1128 # parse line of git-diff-tree "raw" output
1129 sub parse_difftree_raw_line {
1130         my $line = shift;
1131         my %res;
1132
1133         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1134         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1135         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1136                 $res{'from_mode'} = $1;
1137                 $res{'to_mode'} = $2;
1138                 $res{'from_id'} = $3;
1139                 $res{'to_id'} = $4;
1140                 $res{'status'} = $5;
1141                 $res{'similarity'} = $6;
1142                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1143                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1144                 } else {
1145                         $res{'file'} = unquote($7);
1146                 }
1147         }
1148         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1149         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1150                 $res{'commit'} = $1;
1151         }
1152
1153         return wantarray ? %res : \%res;
1154 }
1155
1156 # parse line of git-ls-tree output
1157 sub parse_ls_tree_line ($;%) {
1158         my $line = shift;
1159         my %opts = @_;
1160         my %res;
1161
1162         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1163         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1164
1165         $res{'mode'} = $1;
1166         $res{'type'} = $2;
1167         $res{'hash'} = $3;
1168         if ($opts{'-z'}) {
1169                 $res{'name'} = $4;
1170         } else {
1171                 $res{'name'} = unquote($4);
1172         }
1173
1174         return wantarray ? %res : \%res;
1175 }
1176
1177 ## ......................................................................
1178 ## parse to array of hashes functions
1179
1180 sub git_get_refs_list {
1181         my $type = shift || "";
1182         my %refs;
1183         my @reflist;
1184
1185         my @refs;
1186         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1187                 or return;
1188         while (my $line = <$fd>) {
1189                 chomp $line;
1190                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?([^\^]+))(\^\{\})?$/) {
1191                         if (defined $refs{$1}) {
1192                                 push @{$refs{$1}}, $2;
1193                         } else {
1194                                 $refs{$1} = [ $2 ];
1195                         }
1196
1197                         if (! $4) { # unpeeled, direct reference
1198                                 push @refs, { hash => $1, name => $3 }; # without type
1199                         } elsif ($3 eq $refs[-1]{'name'}) {
1200                                 # most likely a tag is followed by its peeled
1201                                 # (deref) one, and when that happens we know the
1202                                 # previous one was of type 'tag'.
1203                                 $refs[-1]{'type'} = "tag";
1204                         }
1205                 }
1206         }
1207         close $fd;
1208
1209         foreach my $ref (@refs) {
1210                 my $ref_file = $ref->{'name'};
1211                 my $ref_id   = $ref->{'hash'};
1212
1213                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1214                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1215
1216                 push @reflist, \%ref_item;
1217         }
1218         # sort refs by age
1219         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1220         return (\@reflist, \%refs);
1221 }
1222
1223 ## ----------------------------------------------------------------------
1224 ## filesystem-related functions
1225
1226 sub get_file_owner {
1227         my $path = shift;
1228
1229         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1230         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1231         if (!defined $gcos) {
1232                 return undef;
1233         }
1234         my $owner = $gcos;
1235         $owner =~ s/[,;].*$//;
1236         return decode("utf8", $owner, Encode::FB_DEFAULT);
1237 }
1238
1239 ## ......................................................................
1240 ## mimetype related functions
1241
1242 sub mimetype_guess_file {
1243         my $filename = shift;
1244         my $mimemap = shift;
1245         -r $mimemap or return undef;
1246
1247         my %mimemap;
1248         open(MIME, $mimemap) or return undef;
1249         while (<MIME>) {
1250                 next if m/^#/; # skip comments
1251                 my ($mime, $exts) = split(/\t+/);
1252                 if (defined $exts) {
1253                         my @exts = split(/\s+/, $exts);
1254                         foreach my $ext (@exts) {
1255                                 $mimemap{$ext} = $mime;
1256                         }
1257                 }
1258         }
1259         close(MIME);
1260
1261         $filename =~ /\.([^.]*)$/;
1262         return $mimemap{$1};
1263 }
1264
1265 sub mimetype_guess {
1266         my $filename = shift;
1267         my $mime;
1268         $filename =~ /\./ or return undef;
1269
1270         if ($mimetypes_file) {
1271                 my $file = $mimetypes_file;
1272                 if ($file !~ m!^/!) { # if it is relative path
1273                         # it is relative to project
1274                         $file = "$projectroot/$project/$file";
1275                 }
1276                 $mime = mimetype_guess_file($filename, $file);
1277         }
1278         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1279         return $mime;
1280 }
1281
1282 sub blob_mimetype {
1283         my $fd = shift;
1284         my $filename = shift;
1285
1286         if ($filename) {
1287                 my $mime = mimetype_guess($filename);
1288                 $mime and return $mime;
1289         }
1290
1291         # just in case
1292         return $default_blob_plain_mimetype unless $fd;
1293
1294         if (-T $fd) {
1295                 return 'text/plain' .
1296                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1297         } elsif (! $filename) {
1298                 return 'application/octet-stream';
1299         } elsif ($filename =~ m/\.png$/i) {
1300                 return 'image/png';
1301         } elsif ($filename =~ m/\.gif$/i) {
1302                 return 'image/gif';
1303         } elsif ($filename =~ m/\.jpe?g$/i) {
1304                 return 'image/jpeg';
1305         } else {
1306                 return 'application/octet-stream';
1307         }
1308 }
1309
1310 ## ======================================================================
1311 ## functions printing HTML: header, footer, error page
1312
1313 sub git_header_html {
1314         my $status = shift || "200 OK";
1315         my $expires = shift;
1316
1317         my $title = "$site_name git";
1318         if (defined $project) {
1319                 $title .= " - $project";
1320                 if (defined $action) {
1321                         $title .= "/$action";
1322                         if (defined $file_name) {
1323                                 $title .= " - " . esc_html($file_name);
1324                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1325                                         $title .= "/";
1326                                 }
1327                         }
1328                 }
1329         }
1330         my $content_type;
1331         # require explicit support from the UA if we are to send the page as
1332         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1333         # we have to do this because MSIE sometimes globs '*/*', pretending to
1334         # support xhtml+xml but choking when it gets what it asked for.
1335         if (defined $cgi->http('HTTP_ACCEPT') &&
1336             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1337             $cgi->Accept('application/xhtml+xml') != 0) {
1338                 $content_type = 'application/xhtml+xml';
1339         } else {
1340                 $content_type = 'text/html';
1341         }
1342         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1343                            -status=> $status, -expires => $expires);
1344         print <<EOF;
1345 <?xml version="1.0" encoding="utf-8"?>
1346 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1347 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1348 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1349 <!-- git core binaries version $git_version -->
1350 <head>
1351 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1352 <meta name="generator" content="gitweb/$version git/$git_version"/>
1353 <meta name="robots" content="index, nofollow"/>
1354 <title>$title</title>
1355 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1356 EOF
1357         if (defined $project) {
1358                 printf('<link rel="alternate" title="%s log" '.
1359                        'href="%s" type="application/rss+xml"/>'."\n",
1360                        esc_param($project), href(action=>"rss"));
1361         } else {
1362                 printf('<link rel="alternate" title="%s projects list" '.
1363                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1364                        $site_name, href(project=>undef, action=>"project_index"));
1365                 printf('<link rel="alternate" title="%s projects logs" '.
1366                        'href="%s" type="text/x-opml"/>'."\n",
1367                        $site_name, href(project=>undef, action=>"opml"));
1368         }
1369         if (defined $favicon) {
1370                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1371         }
1372
1373         print "</head>\n" .
1374               "<body>\n" .
1375               "<div class=\"page_header\">\n" .
1376               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1377               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1378               "</a>\n";
1379         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1380         if (defined $project) {
1381                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1382                 if (defined $action) {
1383                         print " / $action";
1384                 }
1385                 print "\n";
1386                 if (!defined $searchtext) {
1387                         $searchtext = "";
1388                 }
1389                 my $search_hash;
1390                 if (defined $hash_base) {
1391                         $search_hash = $hash_base;
1392                 } elsif (defined $hash) {
1393                         $search_hash = $hash;
1394                 } else {
1395                         $search_hash = "HEAD";
1396                 }
1397                 $cgi->param("a", "search");
1398                 $cgi->param("h", $search_hash);
1399                 print $cgi->startform(-method => "get", -action => $my_uri) .
1400                       "<div class=\"search\">\n" .
1401                       $cgi->hidden(-name => "p") . "\n" .
1402                       $cgi->hidden(-name => "a") . "\n" .
1403                       $cgi->hidden(-name => "h") . "\n" .
1404                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1405                       "</div>" .
1406                       $cgi->end_form() . "\n";
1407         }
1408         print "</div>\n";
1409 }
1410
1411 sub git_footer_html {
1412         print "<div class=\"page_footer\">\n";
1413         if (defined $project) {
1414                 my $descr = git_get_project_description($project);
1415                 if (defined $descr) {
1416                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1417                 }
1418                 print $cgi->a({-href => href(action=>"rss"),
1419                               -class => "rss_logo"}, "RSS") . "\n";
1420         } else {
1421                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1422                               -class => "rss_logo"}, "OPML") . " ";
1423                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1424                               -class => "rss_logo"}, "TXT") . "\n";
1425         }
1426         print "</div>\n" .
1427               "</body>\n" .
1428               "</html>";
1429 }
1430
1431 sub die_error {
1432         my $status = shift || "403 Forbidden";
1433         my $error = shift || "Malformed query, file missing or permission denied";
1434
1435         git_header_html($status);
1436         print <<EOF;
1437 <div class="page_body">
1438 <br /><br />
1439 $status - $error
1440 <br />
1441 </div>
1442 EOF
1443         git_footer_html();
1444         exit;
1445 }
1446
1447 ## ----------------------------------------------------------------------
1448 ## functions printing or outputting HTML: navigation
1449
1450 sub git_print_page_nav {
1451         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1452         $extra = '' if !defined $extra; # pager or formats
1453
1454         my @navs = qw(summary shortlog log commit commitdiff tree);
1455         if ($suppress) {
1456                 @navs = grep { $_ ne $suppress } @navs;
1457         }
1458
1459         my %arg = map { $_ => {action=>$_} } @navs;
1460         if (defined $head) {
1461                 for (qw(commit commitdiff)) {
1462                         $arg{$_}{hash} = $head;
1463                 }
1464                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1465                         for (qw(shortlog log)) {
1466                                 $arg{$_}{hash} = $head;
1467                         }
1468                 }
1469         }
1470         $arg{tree}{hash} = $treehead if defined $treehead;
1471         $arg{tree}{hash_base} = $treebase if defined $treebase;
1472
1473         print "<div class=\"page_nav\">\n" .
1474                 (join " | ",
1475                  map { $_ eq $current ?
1476                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1477                  } @navs);
1478         print "<br/>\n$extra<br/>\n" .
1479               "</div>\n";
1480 }
1481
1482 sub format_paging_nav {
1483         my ($action, $hash, $head, $page, $nrevs) = @_;
1484         my $paging_nav;
1485
1486
1487         if ($hash ne $head || $page) {
1488                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1489         } else {
1490                 $paging_nav .= "HEAD";
1491         }
1492
1493         if ($page > 0) {
1494                 $paging_nav .= " &sdot; " .
1495                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1496                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1497         } else {
1498                 $paging_nav .= " &sdot; prev";
1499         }
1500
1501         if ($nrevs >= (100 * ($page+1)-1)) {
1502                 $paging_nav .= " &sdot; " .
1503                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1504                                  -accesskey => "n", -title => "Alt-n"}, "next");
1505         } else {
1506                 $paging_nav .= " &sdot; next";
1507         }
1508
1509         return $paging_nav;
1510 }
1511
1512 ## ......................................................................
1513 ## functions printing or outputting HTML: div
1514
1515 sub git_print_header_div {
1516         my ($action, $title, $hash, $hash_base) = @_;
1517         my %args = ();
1518
1519         $args{action} = $action;
1520         $args{hash} = $hash if $hash;
1521         $args{hash_base} = $hash_base if $hash_base;
1522
1523         print "<div class=\"header\">\n" .
1524               $cgi->a({-href => href(%args), -class => "title"},
1525               $title ? $title : $action) .
1526               "\n</div>\n";
1527 }
1528
1529 #sub git_print_authorship (\%) {
1530 sub git_print_authorship {
1531         my $co = shift;
1532
1533         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1534         print "<div class=\"author_date\">" .
1535               esc_html($co->{'author_name'}) .
1536               " [$ad{'rfc2822'}";
1537         if ($ad{'hour_local'} < 6) {
1538                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1539                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1540         } else {
1541                 printf(" (%02d:%02d %s)",
1542                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1543         }
1544         print "]</div>\n";
1545 }
1546
1547 sub git_print_page_path {
1548         my $name = shift;
1549         my $type = shift;
1550         my $hb = shift;
1551
1552         if (!defined $name) {
1553                 print "<div class=\"page_path\">/</div>\n";
1554         } else {
1555                 my @dirname = split '/', $name;
1556                 my $basename = pop @dirname;
1557                 my $fullname = '';
1558
1559                 print "<div class=\"page_path\">";
1560                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1561                               -title => 'tree root'}, "[$project]");
1562                 print " / ";
1563                 foreach my $dir (@dirname) {
1564                         $fullname .= ($fullname ? '/' : '') . $dir;
1565                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1566                                                      hash_base=>$hb),
1567                                       -title => $fullname}, esc_html($dir));
1568                         print " / ";
1569                 }
1570                 if (defined $type && $type eq 'blob') {
1571                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1572                                                      hash_base=>$hb),
1573                                       -title => $name}, esc_html($basename));
1574                 } elsif (defined $type && $type eq 'tree') {
1575                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1576                                                      hash_base=>$hb),
1577                                       -title => $name}, esc_html($basename));
1578                 } else {
1579                         print esc_html($basename);
1580                 }
1581                 print "<br/></div>\n";
1582         }
1583 }
1584
1585 # sub git_print_log (\@;%) {
1586 sub git_print_log ($;%) {
1587         my $log = shift;
1588         my %opts = @_;
1589
1590         if ($opts{'-remove_title'}) {
1591                 # remove title, i.e. first line of log
1592                 shift @$log;
1593         }
1594         # remove leading empty lines
1595         while (defined $log->[0] && $log->[0] eq "") {
1596                 shift @$log;
1597         }
1598
1599         # print log
1600         my $signoff = 0;
1601         my $empty = 0;
1602         foreach my $line (@$log) {
1603                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1604                         $signoff = 1;
1605                         $empty = 0;
1606                         if (! $opts{'-remove_signoff'}) {
1607                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1608                                 next;
1609                         } else {
1610                                 # remove signoff lines
1611                                 next;
1612                         }
1613                 } else {
1614                         $signoff = 0;
1615                 }
1616
1617                 # print only one empty line
1618                 # do not print empty line after signoff
1619                 if ($line eq "") {
1620                         next if ($empty || $signoff);
1621                         $empty = 1;
1622                 } else {
1623                         $empty = 0;
1624                 }
1625
1626                 print format_log_line_html($line) . "<br/>\n";
1627         }
1628
1629         if ($opts{'-final_empty_line'}) {
1630                 # end with single empty line
1631                 print "<br/>\n" unless $empty;
1632         }
1633 }
1634
1635 sub git_print_simplified_log {
1636         my $log = shift;
1637         my $remove_title = shift;
1638
1639         git_print_log($log,
1640                 -final_empty_line=> 1,
1641                 -remove_title => $remove_title);
1642 }
1643
1644 # print tree entry (row of git_tree), but without encompassing <tr> element
1645 sub git_print_tree_entry {
1646         my ($t, $basedir, $hash_base, $have_blame) = @_;
1647
1648         my %base_key = ();
1649         $base_key{hash_base} = $hash_base if defined $hash_base;
1650
1651         # The format of a table row is: mode list link.  Where mode is
1652         # the mode of the entry, list is the name of the entry, an href,
1653         # and link is the action links of the entry.
1654
1655         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1656         if ($t->{'type'} eq "blob") {
1657                 print "<td class=\"list\">" .
1658                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1659                                                file_name=>"$basedir$t->{'name'}", %base_key),
1660                                  -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1661                 print "<td class=\"link\">";
1662                 if ($have_blame) {
1663                         print $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1664                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
1665                                       "blame");
1666                 }
1667                 if (defined $hash_base) {
1668                         if ($have_blame) {
1669                                 print " | ";
1670                         }
1671                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1672                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1673                                       "history");
1674                 }
1675                 print " | " .
1676                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1677                                                file_name=>"$basedir$t->{'name'}")},
1678                                 "raw");
1679                 print "</td>\n";
1680
1681         } elsif ($t->{'type'} eq "tree") {
1682                 print "<td class=\"list\">";
1683                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1684                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1685                               esc_html($t->{'name'}));
1686                 print "</td>\n";
1687                 print "<td class=\"link\">";
1688                 if (defined $hash_base) {
1689                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1690                                                      file_name=>"$basedir$t->{'name'}")},
1691                                       "history");
1692                 }
1693                 print "</td>\n";
1694         }
1695 }
1696
1697 ## ......................................................................
1698 ## functions printing large fragments of HTML
1699
1700 sub git_difftree_body {
1701         my ($difftree, $hash, $parent) = @_;
1702
1703         print "<div class=\"list_head\">\n";
1704         if ($#{$difftree} > 10) {
1705                 print(($#{$difftree} + 1) . " files changed:\n");
1706         }
1707         print "</div>\n";
1708
1709         print "<table class=\"diff_tree\">\n";
1710         my $alternate = 1;
1711         my $patchno = 0;
1712         foreach my $line (@{$difftree}) {
1713                 my %diff = parse_difftree_raw_line($line);
1714
1715                 if ($alternate) {
1716                         print "<tr class=\"dark\">\n";
1717                 } else {
1718                         print "<tr class=\"light\">\n";
1719                 }
1720                 $alternate ^= 1;
1721
1722                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1723                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1724                 if ($diff{'to_mode'} ne ('0' x 6)) {
1725                         $to_mode_oct = oct $diff{'to_mode'};
1726                         if (S_ISREG($to_mode_oct)) { # only for regular file
1727                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1728                         }
1729                         $to_file_type = file_type($diff{'to_mode'});
1730                 }
1731                 if ($diff{'from_mode'} ne ('0' x 6)) {
1732                         $from_mode_oct = oct $diff{'from_mode'};
1733                         if (S_ISREG($to_mode_oct)) { # only for regular file
1734                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1735                         }
1736                         $from_file_type = file_type($diff{'from_mode'});
1737                 }
1738
1739                 if ($diff{'status'} eq "A") { # created
1740                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1741                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1742                         $mode_chng   .= "]</span>";
1743                         print "<td>";
1744                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1745                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1746                                        -class => "list"}, esc_html($diff{'file'}));
1747                         print "</td>\n";
1748                         print "<td>$mode_chng</td>\n";
1749                         print "<td class=\"link\">";
1750                         if ($action eq 'commitdiff') {
1751                                 # link to patch
1752                                 $patchno++;
1753                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1754                         }
1755                         print "</td>\n";
1756
1757                 } elsif ($diff{'status'} eq "D") { # deleted
1758                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1759                         print "<td>";
1760                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1761                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1762                                        -class => "list"}, esc_html($diff{'file'}));
1763                         print "</td>\n";
1764                         print "<td>$mode_chng</td>\n";
1765                         print "<td class=\"link\">";
1766                         if ($action eq 'commitdiff') {
1767                                 # link to patch
1768                                 $patchno++;
1769                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1770                                 print " | ";
1771                         }
1772                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1773                                                      file_name=>$diff{'file'})},
1774                                       "blame") . " | ";
1775                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1776                                                      file_name=>$diff{'file'})},
1777                                       "history");
1778                         print "</td>\n";
1779
1780                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1781                         my $mode_chnge = "";
1782                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1783                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1784                                 if ($from_file_type != $to_file_type) {
1785                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1786                                 }
1787                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1788                                         if ($from_mode_str && $to_mode_str) {
1789                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1790                                         } elsif ($to_mode_str) {
1791                                                 $mode_chnge .= " mode: $to_mode_str";
1792                                         }
1793                                 }
1794                                 $mode_chnge .= "]</span>\n";
1795                         }
1796                         print "<td>";
1797                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1798                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1799                                        -class => "list"}, esc_html($diff{'file'}));
1800                         print "</td>\n";
1801                         print "<td>$mode_chnge</td>\n";
1802                         print "<td class=\"link\">";
1803                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1804                                 if ($action eq 'commitdiff') {
1805                                         # link to patch
1806                                         $patchno++;
1807                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1808                                 } else {
1809                                         print $cgi->a({-href => href(action=>"blobdiff",
1810                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1811                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1812                                                                      file_name=>$diff{'file'})},
1813                                                       "diff");
1814                                 }
1815                                 print " | ";
1816                         }
1817                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
1818                                                      file_name=>$diff{'file'})},
1819                                       "blame") . " | ";
1820                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
1821                                                      file_name=>$diff{'file'})},
1822                                       "history");
1823                         print "</td>\n";
1824
1825                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1826                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1827                         my $nstatus = $status_name{$diff{'status'}};
1828                         my $mode_chng = "";
1829                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1830                                 # mode also for directories, so we cannot use $to_mode_str
1831                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1832                         }
1833                         print "<td>" .
1834                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1835                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1836                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1837                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1838                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1839                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1840                                       -class => "list"}, esc_html($diff{'from_file'})) .
1841                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1842                               "<td class=\"link\">";
1843                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1844                                 if ($action eq 'commitdiff') {
1845                                         # link to patch
1846                                         $patchno++;
1847                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1848                                 } else {
1849                                         print $cgi->a({-href => href(action=>"blobdiff",
1850                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1851                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1852                                                                      file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1853                                                       "diff");
1854                                 }
1855                                 print " | ";
1856                         }
1857                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1858                                                      file_name=>$diff{'from_file'})},
1859                                       "blame") . " | ";
1860                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1861                                                      file_name=>$diff{'from_file'})},
1862                                       "history");
1863                         print "</td>\n";
1864
1865                 } # we should not encounter Unmerged (U) or Unknown (X) status
1866                 print "</tr>\n";
1867         }
1868         print "</table>\n";
1869 }
1870
1871 sub git_patchset_body {
1872         my ($fd, $difftree, $hash, $hash_parent) = @_;
1873
1874         my $patch_idx = 0;
1875         my $in_header = 0;
1876         my $patch_found = 0;
1877         my $diffinfo;
1878
1879         print "<div class=\"patchset\">\n";
1880
1881         LINE:
1882         while (my $patch_line = <$fd>) {
1883                 chomp $patch_line;
1884
1885                 if ($patch_line =~ m/^diff /) { # "git diff" header
1886                         # beginning of patch (in patchset)
1887                         if ($patch_found) {
1888                                 # close previous patch
1889                                 print "</div>\n"; # class="patch"
1890                         } else {
1891                                 # first patch in patchset
1892                                 $patch_found = 1;
1893                         }
1894                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1895
1896                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1897                                 $diffinfo = $difftree->[$patch_idx];
1898                         } else {
1899                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1900                         }
1901                         $patch_idx++;
1902
1903                         # for now, no extended header, hence we skip empty patches
1904                         # companion to  next LINE if $in_header;
1905                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1906                                 $in_header = 1;
1907                                 next LINE;
1908                         }
1909
1910                         if ($diffinfo->{'status'} eq "A") { # added
1911                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1912                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1913                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1914                                               $diffinfo->{'to_id'}) . "(new)" .
1915                                       "</div>\n"; # class="diff_info"
1916
1917                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1918                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1919                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1920                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1921                                               $diffinfo->{'from_id'}) . "(deleted)" .
1922                                       "</div>\n"; # class="diff_info"
1923
1924                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1925                                  $diffinfo->{'status'} eq "C" || # copied
1926                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1927                                 print "<div class=\"diff_info\">" .
1928                                       file_type($diffinfo->{'from_mode'}) . ":" .
1929                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1930                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1931                                               $diffinfo->{'from_id'}) .
1932                                       " -> " .
1933                                       file_type($diffinfo->{'to_mode'}) . ":" .
1934                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1935                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1936                                               $diffinfo->{'to_id'});
1937                                 print "</div>\n"; # class="diff_info"
1938
1939                         } else { # modified, mode changed, ...
1940                                 print "<div class=\"diff_info\">" .
1941                                       file_type($diffinfo->{'from_mode'}) . ":" .
1942                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1943                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1944                                               $diffinfo->{'from_id'}) .
1945                                       " -> " .
1946                                       file_type($diffinfo->{'to_mode'}) . ":" .
1947                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1948                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1949                                               $diffinfo->{'to_id'});
1950                                 print "</div>\n"; # class="diff_info"
1951                         }
1952
1953                         #print "<div class=\"diff extended_header\">\n";
1954                         $in_header = 1;
1955                         next LINE;
1956                 } # start of patch in patchset
1957
1958
1959                 if ($in_header && $patch_line =~ m/^---/) {
1960                         #print "</div>\n"; # class="diff extended_header"
1961                         $in_header = 0;
1962
1963                         my $file = $diffinfo->{'from_file'};
1964                         $file  ||= $diffinfo->{'file'};
1965                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1966                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1967                                         -class => "list"}, esc_html($file));
1968                         $patch_line =~ s|a/.*$|a/$file|g;
1969                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1970
1971                         $patch_line = <$fd>;
1972                         chomp $patch_line;
1973
1974                         #$patch_line =~ m/^+++/;
1975                         $file    = $diffinfo->{'to_file'};
1976                         $file  ||= $diffinfo->{'file'};
1977                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1978                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1979                                         -class => "list"}, esc_html($file));
1980                         $patch_line =~ s|b/.*|b/$file|g;
1981                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1982
1983                         next LINE;
1984                 }
1985                 next LINE if $in_header;
1986
1987                 print format_diff_line($patch_line);
1988         }
1989         print "</div>\n" if $patch_found; # class="patch"
1990
1991         print "</div>\n"; # class="patchset"
1992 }
1993
1994 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1995
1996 sub git_shortlog_body {
1997         # uses global variable $project
1998         my ($revlist, $from, $to, $refs, $extra) = @_;
1999
2000         $from = 0 unless defined $from;
2001         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2002
2003         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2004         my $alternate = 1;
2005         for (my $i = $from; $i <= $to; $i++) {
2006                 my $commit = $revlist->[$i];
2007                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2008                 my $ref = format_ref_marker($refs, $commit);
2009                 my %co = parse_commit($commit);
2010                 if ($alternate) {
2011                         print "<tr class=\"dark\">\n";
2012                 } else {
2013                         print "<tr class=\"light\">\n";
2014                 }
2015                 $alternate ^= 1;
2016                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2017                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2018                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2019                       "<td>";
2020                 print format_subject_html($co{'title'}, $co{'title_short'},
2021                                           href(action=>"commit", hash=>$commit), $ref);
2022                 print "</td>\n" .
2023                       "<td class=\"link\">" .
2024                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2025                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") . " | " .
2026                       $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2027                 print "</td>\n" .
2028                       "</tr>\n";
2029         }
2030         if (defined $extra) {
2031                 print "<tr>\n" .
2032                       "<td colspan=\"4\">$extra</td>\n" .
2033                       "</tr>\n";
2034         }
2035         print "</table>\n";
2036 }
2037
2038 sub git_history_body {
2039         # Warning: assumes constant type (blob or tree) during history
2040         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2041
2042         $from = 0 unless defined $from;
2043         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2044
2045         print "<table class=\"history\" cellspacing=\"0\">\n";
2046         my $alternate = 1;
2047         for (my $i = $from; $i <= $to; $i++) {
2048                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2049                         next;
2050                 }
2051
2052                 my $commit = $1;
2053                 my %co = parse_commit($commit);
2054                 if (!%co) {
2055                         next;
2056                 }
2057
2058                 my $ref = format_ref_marker($refs, $commit);
2059
2060                 if ($alternate) {
2061                         print "<tr class=\"dark\">\n";
2062                 } else {
2063                         print "<tr class=\"light\">\n";
2064                 }
2065                 $alternate ^= 1;
2066                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2067                       # shortlog uses      chop_str($co{'author_name'}, 10)
2068                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2069                       "<td>";
2070                 # originally git_history used chop_str($co{'title'}, 50)
2071                 print format_subject_html($co{'title'}, $co{'title_short'},
2072                                           href(action=>"commit", hash=>$commit), $ref);
2073                 print "</td>\n" .
2074                       "<td class=\"link\">" .
2075                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2076                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2077
2078                 if ($ftype eq 'blob') {
2079                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2080                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2081                         if (defined $blob_current && defined $blob_parent &&
2082                                         $blob_current ne $blob_parent) {
2083                                 print " | " .
2084                                         $cgi->a({-href => href(action=>"blobdiff",
2085                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2086                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2087                                                                file_name=>$file_name)},
2088                                                 "diff to current");
2089                         }
2090                 }
2091                 print "</td>\n" .
2092                       "</tr>\n";
2093         }
2094         if (defined $extra) {
2095                 print "<tr>\n" .
2096                       "<td colspan=\"4\">$extra</td>\n" .
2097                       "</tr>\n";
2098         }
2099         print "</table>\n";
2100 }
2101
2102 sub git_tags_body {
2103         # uses global variable $project
2104         my ($taglist, $from, $to, $extra) = @_;
2105         $from = 0 unless defined $from;
2106         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2107
2108         print "<table class=\"tags\" cellspacing=\"0\">\n";
2109         my $alternate = 1;
2110         for (my $i = $from; $i <= $to; $i++) {
2111                 my $entry = $taglist->[$i];
2112                 my %tag = %$entry;
2113                 my $comment_lines = $tag{'comment'};
2114                 my $comment = shift @$comment_lines;
2115                 my $comment_short;
2116                 if (defined $comment) {
2117                         $comment_short = chop_str($comment, 30, 5);
2118                 }
2119                 if ($alternate) {
2120                         print "<tr class=\"dark\">\n";
2121                 } else {
2122                         print "<tr class=\"light\">\n";
2123                 }
2124                 $alternate ^= 1;
2125                 print "<td><i>$tag{'age'}</i></td>\n" .
2126                       "<td>" .
2127                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2128                                -class => "list name"}, esc_html($tag{'name'})) .
2129                       "</td>\n" .
2130                       "<td>";
2131                 if (defined $comment) {
2132                         print format_subject_html($comment, $comment_short,
2133                                                   href(action=>"tag", hash=>$tag{'id'}));
2134                 }
2135                 print "</td>\n" .
2136                       "<td class=\"selflink\">";
2137                 if ($tag{'type'} eq "tag") {
2138                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2139                 } else {
2140                         print "&nbsp;";
2141                 }
2142                 print "</td>\n" .
2143                       "<td class=\"link\">" . " | " .
2144                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2145                 if ($tag{'reftype'} eq "commit") {
2146                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2147                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2148                 } elsif ($tag{'reftype'} eq "blob") {
2149                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2150                 }
2151                 print "</td>\n" .
2152                       "</tr>";
2153         }
2154         if (defined $extra) {
2155                 print "<tr>\n" .
2156                       "<td colspan=\"5\">$extra</td>\n" .
2157                       "</tr>\n";
2158         }
2159         print "</table>\n";
2160 }
2161
2162 sub git_heads_body {
2163         # uses global variable $project
2164         my ($headlist, $head, $from, $to, $extra) = @_;
2165         $from = 0 unless defined $from;
2166         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2167
2168         print "<table class=\"heads\" cellspacing=\"0\">\n";
2169         my $alternate = 1;
2170         for (my $i = $from; $i <= $to; $i++) {
2171                 my $entry = $headlist->[$i];
2172                 my %tag = %$entry;
2173                 my $curr = $tag{'id'} eq $head;
2174                 if ($alternate) {
2175                         print "<tr class=\"dark\">\n";
2176                 } else {
2177                         print "<tr class=\"light\">\n";
2178                 }
2179                 $alternate ^= 1;
2180                 print "<td><i>$tag{'age'}</i></td>\n" .
2181                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2182                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2183                                -class => "list name"},esc_html($tag{'name'})) .
2184                       "</td>\n" .
2185                       "<td class=\"link\">" .
2186                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2187                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") . " | " .
2188                       $cgi->a({-href => href(action=>"tree", hash=>$tag{'name'}, hash_base=>$tag{'name'})}, "tree") .
2189                       "</td>\n" .
2190                       "</tr>";
2191         }
2192         if (defined $extra) {
2193                 print "<tr>\n" .
2194                       "<td colspan=\"3\">$extra</td>\n" .
2195                       "</tr>\n";
2196         }
2197         print "</table>\n";
2198 }
2199
2200 ## ======================================================================
2201 ## ======================================================================
2202 ## actions
2203
2204 sub git_project_list {
2205         my $order = $cgi->param('o');
2206         if (defined $order && $order !~ m/project|descr|owner|age/) {
2207                 die_error(undef, "Unknown order parameter");
2208         }
2209
2210         my @list = git_get_projects_list();
2211         my @projects;
2212         if (!@list) {
2213                 die_error(undef, "No projects found");
2214         }
2215         foreach my $pr (@list) {
2216                 my $head = git_get_head_hash($pr->{'path'});
2217                 if (!defined $head) {
2218                         next;
2219                 }
2220                 $git_dir = "$projectroot/$pr->{'path'}";
2221                 my %co = parse_commit($head);
2222                 if (!%co) {
2223                         next;
2224                 }
2225                 $pr->{'commit'} = \%co;
2226                 if (!defined $pr->{'descr'}) {
2227                         my $descr = git_get_project_description($pr->{'path'}) || "";
2228                         $pr->{'descr'} = chop_str($descr, 25, 5);
2229                 }
2230                 if (!defined $pr->{'owner'}) {
2231                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2232                 }
2233                 push @projects, $pr;
2234         }
2235
2236         git_header_html();
2237         if (-f $home_text) {
2238                 print "<div class=\"index_include\">\n";
2239                 open (my $fd, $home_text);
2240                 print <$fd>;
2241                 close $fd;
2242                 print "</div>\n";
2243         }
2244         print "<table class=\"project_list\">\n" .
2245               "<tr>\n";
2246         $order ||= "project";
2247         if ($order eq "project") {
2248                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2249                 print "<th>Project</th>\n";
2250         } else {
2251                 print "<th>" .
2252                       $cgi->a({-href => href(project=>undef, order=>'project'),
2253                                -class => "header"}, "Project") .
2254                       "</th>\n";
2255         }
2256         if ($order eq "descr") {
2257                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2258                 print "<th>Description</th>\n";
2259         } else {
2260                 print "<th>" .
2261                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2262                                -class => "header"}, "Description") .
2263                       "</th>\n";
2264         }
2265         if ($order eq "owner") {
2266                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2267                 print "<th>Owner</th>\n";
2268         } else {
2269                 print "<th>" .
2270                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2271                                -class => "header"}, "Owner") .
2272                       "</th>\n";
2273         }
2274         if ($order eq "age") {
2275                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2276                 print "<th>Last Change</th>\n";
2277         } else {
2278                 print "<th>" .
2279                       $cgi->a({-href => href(project=>undef, order=>'age'),
2280                                -class => "header"}, "Last Change") .
2281                       "</th>\n";
2282         }
2283         print "<th></th>\n" .
2284               "</tr>\n";
2285         my $alternate = 1;
2286         foreach my $pr (@projects) {
2287                 if ($alternate) {
2288                         print "<tr class=\"dark\">\n";
2289                 } else {
2290                         print "<tr class=\"light\">\n";
2291                 }
2292                 $alternate ^= 1;
2293                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2294                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2295                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2296                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2297                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2298                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2299                       "<td class=\"link\">" .
2300                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2301                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2302                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2303                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2304                       "</td>\n" .
2305                       "</tr>\n";
2306         }
2307         print "</table>\n";
2308         git_footer_html();
2309 }
2310
2311 sub git_project_index {
2312         my @projects = git_get_projects_list();
2313
2314         print $cgi->header(
2315                 -type => 'text/plain',
2316                 -charset => 'utf-8',
2317                 -content_disposition => 'inline; filename="index.aux"');
2318
2319         foreach my $pr (@projects) {
2320                 if (!exists $pr->{'owner'}) {
2321                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2322                 }
2323
2324                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2325                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2326                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2327                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2328                 $path  =~ s/ /\+/g;
2329                 $owner =~ s/ /\+/g;
2330
2331                 print "$path $owner\n";
2332         }
2333 }
2334
2335 sub git_summary {
2336         my $descr = git_get_project_description($project) || "none";
2337         my $head = git_get_head_hash($project);
2338         my %co = parse_commit($head);
2339         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2340
2341         my $owner = git_get_project_owner($project);
2342
2343         my ($reflist, $refs) = git_get_refs_list();
2344
2345         my @taglist;
2346         my @headlist;
2347         foreach my $ref (@$reflist) {
2348                 if ($ref->{'name'} =~ s!^heads/!!) {
2349                         push @headlist, $ref;
2350                 } else {
2351                         $ref->{'name'} =~ s!^tags/!!;
2352                         push @taglist, $ref;
2353                 }
2354         }
2355
2356         git_header_html();
2357         git_print_page_nav('summary','', $head);
2358
2359         print "<div class=\"title\">&nbsp;</div>\n";
2360         print "<table cellspacing=\"0\">\n" .
2361               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2362               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2363               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2364         # use per project git URL list in $projectroot/$project/cloneurl
2365         # or make project git URL from git base URL and project name
2366         my $url_tag = "URL";
2367         my @url_list = git_get_project_url_list($project);
2368         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2369         foreach my $git_url (@url_list) {
2370                 next unless $git_url;
2371                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2372                 $url_tag = "";
2373         }
2374         print "</table>\n";
2375
2376         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2377                 git_get_head_hash($project)
2378                 or die_error(undef, "Open git-rev-list failed");
2379         my @revlist = map { chomp; $_ } <$fd>;
2380         close $fd;
2381         git_print_header_div('shortlog');
2382         git_shortlog_body(\@revlist, 0, 15, $refs,
2383                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2384
2385         if (@taglist) {
2386                 git_print_header_div('tags');
2387                 git_tags_body(\@taglist, 0, 15,
2388                               $cgi->a({-href => href(action=>"tags")}, "..."));
2389         }
2390
2391         if (@headlist) {
2392                 git_print_header_div('heads');
2393                 git_heads_body(\@headlist, $head, 0, 15,
2394                                $cgi->a({-href => href(action=>"heads")}, "..."));
2395         }
2396
2397         git_footer_html();
2398 }
2399
2400 sub git_tag {
2401         my $head = git_get_head_hash($project);
2402         git_header_html();
2403         git_print_page_nav('','', $head,undef,$head);
2404         my %tag = parse_tag($hash);
2405         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2406         print "<div class=\"title_text\">\n" .
2407               "<table cellspacing=\"0\">\n" .
2408               "<tr>\n" .
2409               "<td>object</td>\n" .
2410               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2411                                $tag{'object'}) . "</td>\n" .
2412               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2413                                               $tag{'type'}) . "</td>\n" .
2414               "</tr>\n";
2415         if (defined($tag{'author'})) {
2416                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2417                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2418                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2419                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2420                         "</td></tr>\n";
2421         }
2422         print "</table>\n\n" .
2423               "</div>\n";
2424         print "<div class=\"page_body\">";
2425         my $comment = $tag{'comment'};
2426         foreach my $line (@$comment) {
2427                 print esc_html($line) . "<br/>\n";
2428         }
2429         print "</div>\n";
2430         git_footer_html();
2431 }
2432
2433 sub git_blame2 {
2434         my $fd;
2435         my $ftype;
2436
2437         my ($have_blame) = gitweb_check_feature('blame');
2438         if (!$have_blame) {
2439                 die_error('403 Permission denied', "Permission denied");
2440         }
2441         die_error('404 Not Found', "File name not defined") if (!$file_name);
2442         $hash_base ||= git_get_head_hash($project);
2443         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2444         my %co = parse_commit($hash_base)
2445                 or die_error(undef, "Reading commit failed");
2446         if (!defined $hash) {
2447                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2448                         or die_error(undef, "Error looking up file");
2449         }
2450         $ftype = git_get_type($hash);
2451         if ($ftype !~ "blob") {
2452                 die_error("400 Bad Request", "Object is not a blob");
2453         }
2454         open ($fd, "-|", git_cmd(), "blame", '-l', '--', $file_name, $hash_base)
2455                 or die_error(undef, "Open git-blame failed");
2456         git_header_html();
2457         my $formats_nav =
2458                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2459                         "blob") .
2460                 " | " .
2461                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2462                         "history") .
2463                 " | " .
2464                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2465                         "HEAD");
2466         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2467         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2468         git_print_page_path($file_name, $ftype, $hash_base);
2469         my @rev_color = (qw(light2 dark2));
2470         my $num_colors = scalar(@rev_color);
2471         my $current_color = 0;
2472         my $last_rev;
2473         print <<HTML;
2474 <div class="page_body">
2475 <table class="blame">
2476 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2477 HTML
2478         while (<$fd>) {
2479                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2480                 my $full_rev = $1;
2481                 my $rev = substr($full_rev, 0, 8);
2482                 my $lineno = $2;
2483                 my $data = $3;
2484
2485                 if (!defined $last_rev) {
2486                         $last_rev = $full_rev;
2487                 } elsif ($last_rev ne $full_rev) {
2488                         $last_rev = $full_rev;
2489                         $current_color = ++$current_color % $num_colors;
2490                 }
2491                 print "<tr class=\"$rev_color[$current_color]\">\n";
2492                 print "<td class=\"sha1\">" .
2493                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2494                                 esc_html($rev)) . "</td>\n";
2495                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2496                       esc_html($lineno) . "</a></td>\n";
2497                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2498                 print "</tr>\n";
2499         }
2500         print "</table>\n";
2501         print "</div>";
2502         close $fd
2503                 or print "Reading blob failed\n";
2504         git_footer_html();
2505 }
2506
2507 sub git_blame {
2508         my $fd;
2509
2510         my ($have_blame) = gitweb_check_feature('blame');
2511         if (!$have_blame) {
2512                 die_error('403 Permission denied', "Permission denied");
2513         }
2514         die_error('404 Not Found', "File name not defined") if (!$file_name);
2515         $hash_base ||= git_get_head_hash($project);
2516         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2517         my %co = parse_commit($hash_base)
2518                 or die_error(undef, "Reading commit failed");
2519         if (!defined $hash) {
2520                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2521                         or die_error(undef, "Error lookup file");
2522         }
2523         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2524                 or die_error(undef, "Open git-annotate failed");
2525         git_header_html();
2526         my $formats_nav =
2527                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2528                         "blob") .
2529                 " | " .
2530                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2531                         "history") .
2532                 " | " .
2533                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2534                         "HEAD");
2535         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2536         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2537         git_print_page_path($file_name, 'blob', $hash_base);
2538         print "<div class=\"page_body\">\n";
2539         print <<HTML;
2540 <table class="blame">
2541   <tr>
2542     <th>Commit</th>
2543     <th>Age</th>
2544     <th>Author</th>
2545     <th>Line</th>
2546     <th>Data</th>
2547   </tr>
2548 HTML
2549         my @line_class = (qw(light dark));
2550         my $line_class_len = scalar (@line_class);
2551         my $line_class_num = $#line_class;
2552         while (my $line = <$fd>) {
2553                 my $long_rev;
2554                 my $short_rev;
2555                 my $author;
2556                 my $time;
2557                 my $lineno;
2558                 my $data;
2559                 my $age;
2560                 my $age_str;
2561                 my $age_class;
2562
2563                 chomp $line;
2564                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2565
2566                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2567                         $long_rev = $1;
2568                         $author   = $2;
2569                         $time     = $3;
2570                         $lineno   = $4;
2571                         $data     = $5;
2572                 } else {
2573                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2574                         next;
2575                 }
2576                 $short_rev  = substr ($long_rev, 0, 8);
2577                 $age        = time () - $time;
2578                 $age_str    = age_string ($age);
2579                 $age_str    =~ s/ /&nbsp;/g;
2580                 $age_class  = age_class($age);
2581                 $author     = esc_html ($author);
2582                 $author     =~ s/ /&nbsp;/g;
2583
2584                 $data = untabify($data);
2585                 $data = esc_html ($data);
2586
2587                 print <<HTML;
2588   <tr class="$line_class[$line_class_num]">
2589     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2590     <td class="$age_class">$age_str</td>
2591     <td>$author</td>
2592     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2593     <td class="pre">$data</td>
2594   </tr>
2595 HTML
2596         } # while (my $line = <$fd>)
2597         print "</table>\n\n";
2598         close $fd
2599                 or print "Reading blob failed.\n";
2600         print "</div>";
2601         git_footer_html();
2602 }
2603
2604 sub git_tags {
2605         my $head = git_get_head_hash($project);
2606         git_header_html();
2607         git_print_page_nav('','', $head,undef,$head);
2608         git_print_header_div('summary', $project);
2609
2610         my ($taglist) = git_get_refs_list("tags");
2611         if (@$taglist) {
2612                 git_tags_body($taglist);
2613         }
2614         git_footer_html();
2615 }
2616
2617 sub git_heads {
2618         my $head = git_get_head_hash($project);
2619         git_header_html();
2620         git_print_page_nav('','', $head,undef,$head);
2621         git_print_header_div('summary', $project);
2622
2623         my ($headlist) = git_get_refs_list("heads");
2624         if (@$headlist) {
2625                 git_heads_body($headlist, $head);
2626         }
2627         git_footer_html();
2628 }
2629
2630 sub git_blob_plain {
2631         my $expires;
2632
2633         if (!defined $hash) {
2634                 if (defined $file_name) {
2635                         my $base = $hash_base || git_get_head_hash($project);
2636                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2637                                 or die_error(undef, "Error lookup file");
2638                 } else {
2639                         die_error(undef, "No file name defined");
2640                 }
2641         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2642                 # blobs defined by non-textual hash id's can be cached
2643                 $expires = "+1d";
2644         }
2645
2646         my $type = shift;
2647         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2648                 or die_error(undef, "Couldn't cat $file_name, $hash");
2649
2650         $type ||= blob_mimetype($fd, $file_name);
2651
2652         # save as filename, even when no $file_name is given
2653         my $save_as = "$hash";
2654         if (defined $file_name) {
2655                 $save_as = $file_name;
2656         } elsif ($type =~ m/^text\//) {
2657                 $save_as .= '.txt';
2658         }
2659
2660         print $cgi->header(
2661                 -type => "$type",
2662                 -expires=>$expires,
2663                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2664         undef $/;
2665         binmode STDOUT, ':raw';
2666         print <$fd>;
2667         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2668         $/ = "\n";
2669         close $fd;
2670 }
2671
2672 sub git_blob {
2673         my $expires;
2674
2675         if (!defined $hash) {
2676                 if (defined $file_name) {
2677                         my $base = $hash_base || git_get_head_hash($project);
2678                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2679                                 or die_error(undef, "Error lookup file");
2680                 } else {
2681                         die_error(undef, "No file name defined");
2682                 }
2683         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2684                 # blobs defined by non-textual hash id's can be cached
2685                 $expires = "+1d";
2686         }
2687
2688         my ($have_blame) = gitweb_check_feature('blame');
2689         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2690                 or die_error(undef, "Couldn't cat $file_name, $hash");
2691         my $mimetype = blob_mimetype($fd, $file_name);
2692         if ($mimetype !~ m/^text\//) {
2693                 close $fd;
2694                 return git_blob_plain($mimetype);
2695         }
2696         git_header_html(undef, $expires);
2697         my $formats_nav = '';
2698         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2699                 if (defined $file_name) {
2700                         if ($have_blame) {
2701                                 $formats_nav .=
2702                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2703                                                                hash=>$hash, file_name=>$file_name)},
2704                                                 "blame") .
2705                                         " | ";
2706                         }
2707                         $formats_nav .=
2708                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2709                                                        hash=>$hash, file_name=>$file_name)},
2710                                         "history") .
2711                                 " | " .
2712                                 $cgi->a({-href => href(action=>"blob_plain",
2713                                                        hash=>$hash, file_name=>$file_name)},
2714                                         "raw") .
2715                                 " | " .
2716                                 $cgi->a({-href => href(action=>"blob",
2717                                                        hash_base=>"HEAD", file_name=>$file_name)},
2718                                         "HEAD");
2719                 } else {
2720                         $formats_nav .=
2721                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2722                 }
2723                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2724                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2725         } else {
2726                 print "<div class=\"page_nav\">\n" .
2727                       "<br/><br/></div>\n" .
2728                       "<div class=\"title\">$hash</div>\n";
2729         }
2730         git_print_page_path($file_name, "blob", $hash_base);
2731         print "<div class=\"page_body\">\n";
2732         my $nr;
2733         while (my $line = <$fd>) {
2734                 chomp $line;
2735                 $nr++;
2736                 $line = untabify($line);
2737                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2738                        $nr, $nr, $nr, esc_html($line);
2739         }
2740         close $fd
2741                 or print "Reading blob failed.\n";
2742         print "</div>";
2743         git_footer_html();
2744 }
2745
2746 sub git_tree {
2747         my $have_snapshot = gitweb_have_snapshot();
2748
2749         if (!defined $hash_base) {
2750                 $hash_base = "HEAD";
2751         }
2752         if (!defined $hash) {
2753                 if (defined $file_name) {
2754                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
2755                 } else {
2756                         $hash = $hash_base;
2757                 }
2758         }
2759         $/ = "\0";
2760         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2761                 or die_error(undef, "Open git-ls-tree failed");
2762         my @entries = map { chomp; $_ } <$fd>;
2763         close $fd or die_error(undef, "Reading tree failed");
2764         $/ = "\n";
2765
2766         my $refs = git_get_references();
2767         my $ref = format_ref_marker($refs, $hash_base);
2768         git_header_html();
2769         my $base = "";
2770         my ($have_blame) = gitweb_check_feature('blame');
2771         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2772                 my @views_nav = ();
2773                 if (defined $file_name) {
2774                         push @views_nav,
2775                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2776                                                        hash=>$hash, file_name=>$file_name)},
2777                                         "history"),
2778                                 $cgi->a({-href => href(action=>"tree",
2779                                                        hash_base=>"HEAD", file_name=>$file_name)},
2780                                         "HEAD"),
2781                 }
2782                 if ($have_snapshot) {
2783                         # FIXME: Should be available when we have no hash base as well.
2784                         push @views_nav,
2785                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
2786                                         "snapshot");
2787                 }
2788                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
2789                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2790         } else {
2791                 undef $hash_base;
2792                 print "<div class=\"page_nav\">\n";
2793                 print "<br/><br/></div>\n";
2794                 print "<div class=\"title\">$hash</div>\n";
2795         }
2796         if (defined $file_name) {
2797                 $base = esc_html("$file_name/");
2798         }
2799         git_print_page_path($file_name, 'tree', $hash_base);
2800         print "<div class=\"page_body\">\n";
2801         print "<table cellspacing=\"0\">\n";
2802         my $alternate = 1;
2803         foreach my $line (@entries) {
2804                 my %t = parse_ls_tree_line($line, -z => 1);
2805
2806                 if ($alternate) {
2807                         print "<tr class=\"dark\">\n";
2808                 } else {
2809                         print "<tr class=\"light\">\n";
2810                 }
2811                 $alternate ^= 1;
2812
2813                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2814
2815                 print "</tr>\n";
2816         }
2817         print "</table>\n" .
2818               "</div>";
2819         git_footer_html();
2820 }
2821
2822 sub git_snapshot {
2823         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2824         my $have_snapshot = (defined $ctype && defined $suffix);
2825         if (!$have_snapshot) {
2826                 die_error('403 Permission denied', "Permission denied");
2827         }
2828
2829         if (!defined $hash) {
2830                 $hash = git_get_head_hash($project);
2831         }
2832
2833         my $filename = basename($project) . "-$hash.tar.$suffix";
2834
2835         print $cgi->header(
2836                 -type => 'application/x-tar',
2837                 -content_encoding => $ctype,
2838                 -content_disposition => 'inline; filename="' . "$filename" . '"',
2839                 -status => '200 OK');
2840
2841         my $git_command = git_cmd_str();
2842         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2843                 die_error(undef, "Execute git-tar-tree failed.");
2844         binmode STDOUT, ':raw';
2845         print <$fd>;
2846         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2847         close $fd;
2848
2849 }
2850
2851 sub git_log {
2852         my $head = git_get_head_hash($project);
2853         if (!defined $hash) {
2854                 $hash = $head;
2855         }
2856         if (!defined $page) {
2857                 $page = 0;
2858         }
2859         my $refs = git_get_references();
2860
2861         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2862         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2863                 or die_error(undef, "Open git-rev-list failed");
2864         my @revlist = map { chomp; $_ } <$fd>;
2865         close $fd;
2866
2867         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2868
2869         git_header_html();
2870         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2871
2872         if (!@revlist) {
2873                 my %co = parse_commit($hash);
2874
2875                 git_print_header_div('summary', $project);
2876                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2877         }
2878         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2879                 my $commit = $revlist[$i];
2880                 my $ref = format_ref_marker($refs, $commit);
2881                 my %co = parse_commit($commit);
2882                 next if !%co;
2883                 my %ad = parse_date($co{'author_epoch'});
2884                 git_print_header_div('commit',
2885                                "<span class=\"age\">$co{'age_string'}</span>" .
2886                                esc_html($co{'title'}) . $ref,
2887                                $commit);
2888                 print "<div class=\"title_text\">\n" .
2889                       "<div class=\"log_link\">\n" .
2890                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2891                       " | " .
2892                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2893                       " | " .
2894                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
2895                       "<br/>\n" .
2896                       "</div>\n" .
2897                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2898                       "</div>\n";
2899
2900                 print "<div class=\"log_body\">\n";
2901                 git_print_simplified_log($co{'comment'});
2902                 print "</div>\n";
2903         }
2904         git_footer_html();
2905 }
2906
2907 sub git_commit {
2908         my %co = parse_commit($hash);
2909         if (!%co) {
2910                 die_error(undef, "Unknown commit object");
2911         }
2912         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2913         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2914
2915         my $parent = $co{'parent'};
2916         if (!defined $parent) {
2917                 $parent = "--root";
2918         }
2919         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2920                 or die_error(undef, "Open git-diff-tree failed");
2921         my @difftree = map { chomp; $_ } <$fd>;
2922         close $fd or die_error(undef, "Reading git-diff-tree failed");
2923
2924         # non-textual hash id's can be cached
2925         my $expires;
2926         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2927                 $expires = "+1d";
2928         }
2929         my $refs = git_get_references();
2930         my $ref = format_ref_marker($refs, $co{'id'});
2931
2932         my $have_snapshot = gitweb_have_snapshot();
2933
2934         my @views_nav = ();
2935         if (defined $file_name && defined $co{'parent'}) {
2936                 push @views_nav,
2937                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2938                                 "blame");
2939         }
2940         if (defined $co{'parent'}) {
2941                 push @views_nav,
2942                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash)}, "shortlog"),
2943                         $cgi->a({-href => href(action=>"log", hash=>$hash)}, "log");
2944         }
2945         git_header_html(undef, $expires);
2946         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2947                            $hash, $co{'tree'}, $hash,
2948                            join (' | ', @views_nav));
2949
2950         if (defined $co{'parent'}) {
2951                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2952         } else {
2953                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2954         }
2955         print "<div class=\"title_text\">\n" .
2956               "<table cellspacing=\"0\">\n";
2957         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2958               "<tr>" .
2959               "<td></td><td> $ad{'rfc2822'}";
2960         if ($ad{'hour_local'} < 6) {
2961                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2962                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2963         } else {
2964                 printf(" (%02d:%02d %s)",
2965                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2966         }
2967         print "</td>" .
2968               "</tr>\n";
2969         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2970         print "<tr><td></td><td> $cd{'rfc2822'}" .
2971               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2972               "</td></tr>\n";
2973         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2974         print "<tr>" .
2975               "<td>tree</td>" .
2976               "<td class=\"sha1\">" .
2977               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2978                        class => "list"}, $co{'tree'}) .
2979               "</td>" .
2980               "<td class=\"link\">" .
2981               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2982                       "tree");
2983         if ($have_snapshot) {
2984                 print " | " .
2985                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2986         }
2987         print "</td>" .
2988               "</tr>\n";
2989         my $parents = $co{'parents'};
2990         foreach my $par (@$parents) {
2991                 print "<tr>" .
2992                       "<td>parent</td>" .
2993                       "<td class=\"sha1\">" .
2994                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2995                                class => "list"}, $par) .
2996                       "</td>" .
2997                       "<td class=\"link\">" .
2998                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2999                       " | " .
3000                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3001                       "</td>" .
3002                       "</tr>\n";
3003         }
3004         print "</table>".
3005               "</div>\n";
3006
3007         print "<div class=\"page_body\">\n";
3008         git_print_log($co{'comment'});
3009         print "</div>\n";
3010
3011         git_difftree_body(\@difftree, $hash, $parent);
3012
3013         git_footer_html();
3014 }
3015
3016 sub git_blobdiff {
3017         my $format = shift || 'html';
3018
3019         my $fd;
3020         my @difftree;
3021         my %diffinfo;
3022         my $expires;
3023
3024         # preparing $fd and %diffinfo for git_patchset_body
3025         # new style URI
3026         if (defined $hash_base && defined $hash_parent_base) {
3027                 if (defined $file_name) {
3028                         # read raw output
3029                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
3030                                 "--", $file_name
3031                                 or die_error(undef, "Open git-diff-tree failed");
3032                         @difftree = map { chomp; $_ } <$fd>;
3033                         close $fd
3034                                 or die_error(undef, "Reading git-diff-tree failed");
3035                         @difftree
3036                                 or die_error('404 Not Found', "Blob diff not found");
3037
3038                 } elsif (defined $hash &&
3039                          $hash =~ /[0-9a-fA-F]{40}/) {
3040                         # try to find filename from $hash
3041
3042                         # read filtered raw output
3043                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
3044                                 or die_error(undef, "Open git-diff-tree failed");
3045                         @difftree =
3046                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3047                                 # $hash == to_id
3048                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3049                                 map { chomp; $_ } <$fd>;
3050                         close $fd
3051                                 or die_error(undef, "Reading git-diff-tree failed");
3052                         @difftree
3053                                 or die_error('404 Not Found', "Blob diff not found");
3054
3055                 } else {
3056                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3057                 }
3058
3059                 if (@difftree > 1) {
3060                         die_error('404 Not Found', "Ambiguous blob diff specification");
3061                 }
3062
3063                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3064                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3065                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3066
3067                 $hash_parent ||= $diffinfo{'from_id'};
3068                 $hash        ||= $diffinfo{'to_id'};
3069
3070                 # non-textual hash id's can be cached
3071                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3072                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3073                         $expires = '+1d';
3074                 }
3075
3076                 # open patch output
3077                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3078                         '-p', $hash_parent_base, $hash_base,
3079                         "--", $file_name
3080                         or die_error(undef, "Open git-diff-tree failed");
3081         }
3082
3083         # old/legacy style URI
3084         if (!%diffinfo && # if new style URI failed
3085             defined $hash && defined $hash_parent) {
3086                 # fake git-diff-tree raw output
3087                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3088                 $diffinfo{'from_id'} = $hash_parent;
3089                 $diffinfo{'to_id'}   = $hash;
3090                 if (defined $file_name) {
3091                         if (defined $file_parent) {
3092                                 $diffinfo{'status'} = '2';
3093                                 $diffinfo{'from_file'} = $file_parent;
3094                                 $diffinfo{'to_file'}   = $file_name;
3095                         } else { # assume not renamed
3096                                 $diffinfo{'status'} = '1';
3097                                 $diffinfo{'from_file'} = $file_name;
3098                                 $diffinfo{'to_file'}   = $file_name;
3099                         }
3100                 } else { # no filename given
3101                         $diffinfo{'status'} = '2';
3102                         $diffinfo{'from_file'} = $hash_parent;
3103                         $diffinfo{'to_file'}   = $hash;
3104                 }
3105
3106                 # non-textual hash id's can be cached
3107                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3108                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3109                         $expires = '+1d';
3110                 }
3111
3112                 # open patch output
3113                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3114                         or die_error(undef, "Open git-diff failed");
3115         } else  {
3116                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3117                         unless %diffinfo;
3118         }
3119
3120         # header
3121         if ($format eq 'html') {
3122                 my $formats_nav =
3123                         $cgi->a({-href => href(action=>"blobdiff_plain",
3124                                                hash=>$hash, hash_parent=>$hash_parent,
3125                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3126                                                file_name=>$file_name, file_parent=>$file_parent)},
3127                                 "raw");
3128                 git_header_html(undef, $expires);
3129                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3130                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3131                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3132                 } else {
3133                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3134                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3135                 }
3136                 if (defined $file_name) {
3137                         git_print_page_path($file_name, "blob", $hash_base);
3138                 } else {
3139                         print "<div class=\"page_path\"></div>\n";
3140                 }
3141
3142         } elsif ($format eq 'plain') {
3143                 print $cgi->header(
3144                         -type => 'text/plain',
3145                         -charset => 'utf-8',
3146                         -expires => $expires,
3147                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3148
3149                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3150
3151         } else {
3152                 die_error(undef, "Unknown blobdiff format");
3153         }
3154
3155         # patch
3156         if ($format eq 'html') {
3157                 print "<div class=\"page_body\">\n";
3158
3159                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3160                 close $fd;
3161
3162                 print "</div>\n"; # class="page_body"
3163                 git_footer_html();
3164
3165         } else {
3166                 while (my $line = <$fd>) {
3167                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3168                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3169
3170                         print $line;
3171
3172                         last if $line =~ m!^\+\+\+!;
3173                 }
3174                 local $/ = undef;
3175                 print <$fd>;
3176                 close $fd;
3177         }
3178 }
3179
3180 sub git_blobdiff_plain {
3181         git_blobdiff('plain');
3182 }
3183
3184 sub git_commitdiff {
3185         my $format = shift || 'html';
3186         my %co = parse_commit($hash);
3187         if (!%co) {
3188                 die_error(undef, "Unknown commit object");
3189         }
3190         if (!defined $hash_parent) {
3191                 $hash_parent = $co{'parent'} || '--root';
3192         }
3193
3194         # read commitdiff
3195         my $fd;
3196         my @difftree;
3197         if ($format eq 'html') {
3198                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3199                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3200                         or die_error(undef, "Open git-diff-tree failed");
3201
3202                 while (chomp(my $line = <$fd>)) {
3203                         # empty line ends raw part of diff-tree output
3204                         last unless $line;
3205                         push @difftree, $line;
3206                 }
3207
3208         } elsif ($format eq 'plain') {
3209                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3210                         '-p', $hash_parent, $hash
3211                         or die_error(undef, "Open git-diff-tree failed");
3212
3213         } else {
3214                 die_error(undef, "Unknown commitdiff format");
3215         }
3216
3217         # non-textual hash id's can be cached
3218         my $expires;
3219         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3220                 $expires = "+1d";
3221         }
3222
3223         # write commit message
3224         if ($format eq 'html') {
3225                 my $refs = git_get_references();
3226                 my $ref = format_ref_marker($refs, $co{'id'});
3227                 my $formats_nav =
3228                         $cgi->a({-href => href(action=>"commitdiff_plain",
3229                                                hash=>$hash, hash_parent=>$hash_parent)},
3230                                 "raw");
3231
3232                 git_header_html(undef, $expires);
3233                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3234                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3235                 git_print_authorship(\%co);
3236                 print "<div class=\"page_body\">\n";
3237                 print "<div class=\"log\">\n";
3238                 git_print_simplified_log($co{'comment'}, 1); # skip title
3239                 print "</div>\n"; # class="log"
3240
3241         } elsif ($format eq 'plain') {
3242                 my $refs = git_get_references("tags");
3243                 my $tagname = git_get_rev_name_tags($hash);
3244                 my $filename = basename($project) . "-$hash.patch";
3245
3246                 print $cgi->header(
3247                         -type => 'text/plain',
3248                         -charset => 'utf-8',
3249                         -expires => $expires,
3250                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3251                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3252                 print <<TEXT;
3253 From: $co{'author'}
3254 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3255 Subject: $co{'title'}
3256 TEXT
3257                 print "X-Git-Tag: $tagname\n" if $tagname;
3258                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3259
3260                 foreach my $line (@{$co{'comment'}}) {
3261                         print "$line\n";
3262                 }
3263                 print "---\n\n";
3264         }
3265
3266         # write patch
3267         if ($format eq 'html') {
3268                 git_difftree_body(\@difftree, $hash, $hash_parent);
3269                 print "<br/>\n";
3270
3271                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3272                 close $fd;
3273                 print "</div>\n"; # class="page_body"
3274                 git_footer_html();
3275
3276         } elsif ($format eq 'plain') {
3277                 local $/ = undef;
3278                 print <$fd>;
3279                 close $fd
3280                         or print "Reading git-diff-tree failed\n";
3281         }
3282 }
3283
3284 sub git_commitdiff_plain {
3285         git_commitdiff('plain');
3286 }
3287
3288 sub git_history {
3289         if (!defined $hash_base) {
3290                 $hash_base = git_get_head_hash($project);
3291         }
3292         if (!defined $page) {
3293                 $page = 0;
3294         }
3295         my $ftype;
3296         my %co = parse_commit($hash_base);
3297         if (!%co) {
3298                 die_error(undef, "Unknown commit object");
3299         }
3300
3301         my $refs = git_get_references();
3302         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3303
3304         if (!defined $hash && defined $file_name) {
3305                 $hash = git_get_hash_by_path($hash_base, $file_name);
3306         }
3307         if (defined $hash) {
3308                 $ftype = git_get_type($hash);
3309         }
3310
3311         open my $fd, "-|",
3312                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3313                         or die_error(undef, "Open git-rev-list-failed");
3314         my @revlist = map { chomp; $_ } <$fd>;
3315         close $fd
3316                 or die_error(undef, "Reading git-rev-list failed");
3317
3318         my $paging_nav = '';
3319         if ($page > 0) {
3320                 $paging_nav .=
3321                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3322                                                file_name=>$file_name)},
3323                                 "first");
3324                 $paging_nav .= " &sdot; " .
3325                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3326                                                file_name=>$file_name, page=>$page-1),
3327                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3328         } else {
3329                 $paging_nav .= "first";
3330                 $paging_nav .= " &sdot; prev";
3331         }
3332         if ($#revlist >= (100 * ($page+1)-1)) {
3333                 $paging_nav .= " &sdot; " .
3334                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3335                                                file_name=>$file_name, page=>$page+1),
3336                                  -accesskey => "n", -title => "Alt-n"}, "next");
3337         } else {
3338                 $paging_nav .= " &sdot; next";
3339         }
3340         my $next_link = '';
3341         if ($#revlist >= (100 * ($page+1)-1)) {
3342                 $next_link =
3343                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3344                                                file_name=>$file_name, page=>$page+1),
3345                                  -title => "Alt-n"}, "next");
3346         }
3347
3348         git_header_html();
3349         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3350         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3351         git_print_page_path($file_name, $ftype, $hash_base);
3352
3353         git_history_body(\@revlist, ($page * 100), $#revlist,
3354                          $refs, $hash_base, $ftype, $next_link);
3355
3356         git_footer_html();
3357 }
3358
3359 sub git_search {
3360         if (!defined $searchtext) {
3361                 die_error(undef, "Text field empty");
3362         }
3363         if (!defined $hash) {
3364                 $hash = git_get_head_hash($project);
3365         }
3366         my %co = parse_commit($hash);
3367         if (!%co) {
3368                 die_error(undef, "Unknown commit object");
3369         }
3370
3371         my $commit_search = 1;
3372         my $author_search = 0;
3373         my $committer_search = 0;
3374         my $pickaxe_search = 0;
3375         if ($searchtext =~ s/^author\\://i) {
3376                 $author_search = 1;
3377         } elsif ($searchtext =~ s/^committer\\://i) {
3378                 $committer_search = 1;
3379         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3380                 $commit_search = 0;
3381                 $pickaxe_search = 1;
3382
3383                 # pickaxe may take all resources of your box and run for several minutes
3384                 # with every query - so decide by yourself how public you make this feature
3385                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3386                 if (!$have_pickaxe) {
3387                         die_error('403 Permission denied', "Permission denied");
3388                 }
3389         }
3390         git_header_html();
3391         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3392         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3393
3394         print "<table cellspacing=\"0\">\n";
3395         my $alternate = 1;
3396         if ($commit_search) {
3397                 $/ = "\0";
3398                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3399                 while (my $commit_text = <$fd>) {
3400                         if (!grep m/$searchtext/i, $commit_text) {
3401                                 next;
3402                         }
3403                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3404                                 next;
3405                         }
3406                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3407                                 next;
3408                         }
3409                         my @commit_lines = split "\n", $commit_text;
3410                         my %co = parse_commit(undef, \@commit_lines);
3411                         if (!%co) {
3412                                 next;
3413                         }
3414                         if ($alternate) {
3415                                 print "<tr class=\"dark\">\n";
3416                         } else {
3417                                 print "<tr class=\"light\">\n";
3418                         }
3419                         $alternate ^= 1;
3420                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3421                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3422                               "<td>" .
3423                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3424                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3425                         my $comment = $co{'comment'};
3426                         foreach my $line (@$comment) {
3427                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3428                                         my $lead = esc_html($1) || "";
3429                                         $lead = chop_str($lead, 30, 10);
3430                                         my $match = esc_html($2) || "";
3431                                         my $trail = esc_html($3) || "";
3432                                         $trail = chop_str($trail, 30, 10);
3433                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3434                                         print chop_str($text, 80, 5) . "<br/>\n";
3435                                 }
3436                         }
3437                         print "</td>\n" .
3438                               "<td class=\"link\">" .
3439                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3440                               " | " .
3441                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3442                         print "</td>\n" .
3443                               "</tr>\n";
3444                 }
3445                 close $fd;
3446         }
3447
3448         if ($pickaxe_search) {
3449                 $/ = "\n";
3450                 my $git_command = git_cmd_str();
3451                 open my $fd, "-|", "$git_command rev-list $hash | " .
3452                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3453                 undef %co;
3454                 my @files;
3455                 while (my $line = <$fd>) {
3456                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3457                                 my %set;
3458                                 $set{'file'} = $6;
3459                                 $set{'from_id'} = $3;
3460                                 $set{'to_id'} = $4;
3461                                 $set{'id'} = $set{'to_id'};
3462                                 if ($set{'id'} =~ m/0{40}/) {
3463                                         $set{'id'} = $set{'from_id'};
3464                                 }
3465                                 if ($set{'id'} =~ m/0{40}/) {
3466                                         next;
3467                                 }
3468                                 push @files, \%set;
3469                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3470                                 if (%co) {
3471                                         if ($alternate) {
3472                                                 print "<tr class=\"dark\">\n";
3473                                         } else {
3474                                                 print "<tr class=\"light\">\n";
3475                                         }
3476                                         $alternate ^= 1;
3477                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3478                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3479                                               "<td>" .
3480                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3481                                                       -class => "list subject"},
3482                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3483                                         while (my $setref = shift @files) {
3484                                                 my %set = %$setref;
3485                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3486                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3487                                                               -class => "list"},
3488                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3489                                                       "<br/>\n";
3490                                         }
3491                                         print "</td>\n" .
3492                                               "<td class=\"link\">" .
3493                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3494                                               " | " .
3495                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3496                                         print "</td>\n" .
3497                                               "</tr>\n";
3498                                 }
3499                                 %co = parse_commit($1);
3500                         }
3501                 }
3502                 close $fd;
3503         }
3504         print "</table>\n";
3505         git_footer_html();
3506 }
3507
3508 sub git_shortlog {
3509         my $head = git_get_head_hash($project);
3510         if (!defined $hash) {
3511                 $hash = $head;
3512         }
3513         if (!defined $page) {
3514                 $page = 0;
3515         }
3516         my $refs = git_get_references();
3517
3518         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3519         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3520                 or die_error(undef, "Open git-rev-list failed");
3521         my @revlist = map { chomp; $_ } <$fd>;
3522         close $fd;
3523
3524         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3525         my $next_link = '';
3526         if ($#revlist >= (100 * ($page+1)-1)) {
3527                 $next_link =
3528                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3529                                  -title => "Alt-n"}, "next");
3530         }
3531
3532
3533         git_header_html();
3534         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3535         git_print_header_div('summary', $project);
3536
3537         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3538
3539         git_footer_html();
3540 }
3541
3542 ## ......................................................................
3543 ## feeds (RSS, OPML)
3544
3545 sub git_rss {
3546         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3547         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3548                 or die_error(undef, "Open git-rev-list failed");
3549         my @revlist = map { chomp; $_ } <$fd>;
3550         close $fd or die_error(undef, "Reading git-rev-list failed");
3551         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3552         print <<XML;
3553 <?xml version="1.0" encoding="utf-8"?>
3554 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3555 <channel>
3556 <title>$project $my_uri $my_url</title>
3557 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3558 <description>$project log</description>
3559 <language>en</language>
3560 XML
3561
3562         for (my $i = 0; $i <= $#revlist; $i++) {
3563                 my $commit = $revlist[$i];
3564                 my %co = parse_commit($commit);
3565                 # we read 150, we always show 30 and the ones more recent than 48 hours
3566                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3567                         last;
3568                 }
3569                 my %cd = parse_date($co{'committer_epoch'});
3570                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3571                         $co{'parent'}, $co{'id'}
3572                         or next;
3573                 my @difftree = map { chomp; $_ } <$fd>;
3574                 close $fd
3575                         or next;
3576                 print "<item>\n" .
3577                       "<title>" .
3578                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3579                       "</title>\n" .
3580                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3581                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3582                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3583                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3584                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3585                       "<content:encoded>" .
3586                       "<![CDATA[\n";
3587                 my $comment = $co{'comment'};
3588                 foreach my $line (@$comment) {
3589                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3590                         print "$line<br/>\n";
3591                 }
3592                 print "<br/>\n";
3593                 foreach my $line (@difftree) {
3594                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3595                                 next;
3596                         }
3597                         my $file = esc_html(unquote($7));
3598                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3599                         print "$file<br/>\n";
3600                 }
3601                 print "]]>\n" .
3602                       "</content:encoded>\n" .
3603                       "</item>\n";
3604         }
3605         print "</channel></rss>";
3606 }
3607
3608 sub git_opml {
3609         my @list = git_get_projects_list();
3610
3611         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3612         print <<XML;
3613 <?xml version="1.0" encoding="utf-8"?>
3614 <opml version="1.0">
3615 <head>
3616   <title>$site_name Git OPML Export</title>
3617 </head>
3618 <body>
3619 <outline text="git RSS feeds">
3620 XML
3621
3622         foreach my $pr (@list) {
3623                 my %proj = %$pr;
3624                 my $head = git_get_head_hash($proj{'path'});
3625                 if (!defined $head) {
3626                         next;
3627                 }
3628                 $git_dir = "$projectroot/$proj{'path'}";
3629                 my %co = parse_commit($head);
3630                 if (!%co) {
3631                         next;
3632                 }
3633
3634                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3635                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3636                 my $html = "$my_url?p=$proj{'path'};a=summary";
3637                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3638         }
3639         print <<XML;
3640 </outline>
3641 </body>
3642 </opml>
3643 XML
3644 }