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 our $githelp_url = "http://git.or.cz/";
  55 our $githelp_label = "git homepage";
  56
  57 # source of projects list
  58 our $projects_list = "++GITWEB_LIST++";
  59
  60 # show repository only if this file exists
  61 # (only effective if this variable evaluates to true)
  62 our $export_ok = "++GITWEB_EXPORT_OK++";
  63
  64 # only allow viewing of repositories also shown on the overview page
  65 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  66
  67 # list of git base URLs used for URL to where fetch project from,
  68 # i.e. full URL is "$git_base_url/$project"
  69 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  70
  71 # default blob_plain mimetype and default charset for text/plain blob
  72 our $default_blob_plain_mimetype = 'text/plain';
  73 our $default_text_plain_charset  = undef;
  74
  75 # file to use for guessing MIME types before trying /etc/mime.types
  76 # (relative to the current git repository)
  77 our $mimetypes_file = undef;
  78
  79 # You define site-wide feature defaults here; override them with
  80 # $GITWEB_CONFIG as necessary.
  81 our %feature = (
  82         # feature => {
  83         #       'sub' => feature-sub (subroutine),
  84         #       'override' => allow-override (boolean),
  85         #       'default' => [ default options...] (array reference)}
  86         #
  87         # if feature is overridable (it means that allow-override has true value,
  88         # then feature-sub will be called with default options as parameters;
  89         # return value of feature-sub indicates if to enable specified feature
  90         #
  91         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  92
  93         'blame' => {
  94                 'sub' => \&feature_blame,
  95                 'override' => 0,
  96                 'default' => [0]},
  97
  98         'snapshot' => {
  99                 'sub' => \&feature_snapshot,
 100                 'override' => 0,
 101                 #         => [content-encoding, suffix, program]
 102                 'default' => ['x-gzip', 'gz', 'gzip']},
 103
 104         'pickaxe' => {
 105                 'sub' => \&feature_pickaxe,
 106                 'override' => 0,
 107                 'default' => [1]},
 108 );
 109
 110 sub gitweb_check_feature {
 111         my ($name) = @_;
 112         return unless exists $feature{$name};
 113         my ($sub, $override, @defaults) = (
 114                 $feature{$name}{'sub'},
 115                 $feature{$name}{'override'},
 116                 @{$feature{$name}{'default'}});
 117         if (!$override) { return @defaults; }
 118         return $sub->(@defaults);
 119 }
 120
 121 # To enable system wide have in $GITWEB_CONFIG
 122 # $feature{'blame'}{'default'} = [1];
 123 # To have project specific config enable override in $GITWEB_CONFIG
 124 # $feature{'blame'}{'override'} = 1;
 125 # and in project config gitweb.blame = 0|1;
 126
 127 sub feature_blame {
 128         my ($val) = git_get_project_config('blame', '--bool');
 129
 130         if ($val eq 'true') {
 131                 return 1;
 132         } elsif ($val eq 'false') {
 133                 return 0;
 134         }
 135
 136         return $_[0];
 137 }
 138
 139 # To disable system wide have in $GITWEB_CONFIG
 140 # $feature{'snapshot'}{'default'} = [undef];
 141 # To have project specific config enable override in $GITWEB_CONFIG
 142 # $feature{'blame'}{'override'} = 1;
 143 # and in project config  gitweb.snapshot = none|gzip|bzip2
 144
 145 sub feature_snapshot {
 146         my ($ctype, $suffix, $command) = @_;
 147
 148         my ($val) = git_get_project_config('snapshot');
 149
 150         if ($val eq 'gzip') {
 151                 return ('x-gzip', 'gz', 'gzip');
 152         } elsif ($val eq 'bzip2') {
 153                 return ('x-bzip2', 'bz2', 'bzip2');
 154         } elsif ($val eq 'none') {
 155                 return ();
 156         }
 157
 158         return ($ctype, $suffix, $command);
 159 }
 160
 161 sub gitweb_have_snapshot {
 162         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 163         my $have_snapshot = (defined $ctype && defined $suffix);
 164
 165         return $have_snapshot;
 166 }
 167
 168 # To enable system wide have in $GITWEB_CONFIG
 169 # $feature{'pickaxe'}{'default'} = [1];
 170 # To have project specific config enable override in $GITWEB_CONFIG
 171 # $feature{'pickaxe'}{'override'} = 1;
 172 # and in project config gitweb.pickaxe = 0|1;
 173
 174 sub feature_pickaxe {
 175         my ($val) = git_get_project_config('pickaxe', '--bool');
 176
 177         if ($val eq 'true') {
 178                 return (1);
 179         } elsif ($val eq 'false') {
 180                 return (0);
 181         }
 182
 183         return ($_[0]);
 184 }
 185
 186 # rename detection options for git-diff and git-diff-tree
 187 # - default is '-M', with the cost proportional to
 188 #   (number of removed files) * (number of new files).
 189 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 190 #   (number of changed files + number of removed files) * (number of new files)
 191 # - even more costly is '-C', '--find-copies-harder' with cost
 192 #   (number of files in the original tree) * (number of new files)
 193 # - one might want to include '-B' option, e.g. '-B', '-M'
 194 our @diff_opts = ('-M'); # taken from git_commit
 195
 196 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 197 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 198
 199 # version of the core git binary
 200 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 201
 202 $projects_list ||= $projectroot;
 203
 204 # ======================================================================
 205 # input validation and dispatch
 206 our $action = $cgi->param('a');
 207 if (defined $action) {
 208         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 209                 die_error(undef, "Invalid action parameter");
 210         }
 211 }
 212
 213 # parameters which are pathnames
 214 our $project = $cgi->param('p');
 215 if (defined $project) {
 216         if (!validate_pathname($project) ||
 217             !(-d "$projectroot/$project") ||
 218             !(-e "$projectroot/$project/HEAD") ||
 219             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 220             ($strict_export && !project_in_list($project))) {
 221                 undef $project;
 222                 die_error(undef, "No such project");
 223         }
 224 }
 225
 226 our $file_name = $cgi->param('f');
 227 if (defined $file_name) {
 228         if (!validate_pathname($file_name)) {
 229                 die_error(undef, "Invalid file parameter");
 230         }
 231 }
 232
 233 our $file_parent = $cgi->param('fp');
 234 if (defined $file_parent) {
 235         if (!validate_pathname($file_parent)) {
 236                 die_error(undef, "Invalid file parent parameter");
 237         }
 238 }
 239
 240 # parameters which are refnames
 241 our $hash = $cgi->param('h');
 242 if (defined $hash) {
 243         if (!validate_refname($hash)) {
 244                 die_error(undef, "Invalid hash parameter");
 245         }
 246 }
 247
 248 our $hash_parent = $cgi->param('hp');
 249 if (defined $hash_parent) {
 250         if (!validate_refname($hash_parent)) {
 251                 die_error(undef, "Invalid hash parent parameter");
 252         }
 253 }
 254
 255 our $hash_base = $cgi->param('hb');
 256 if (defined $hash_base) {
 257         if (!validate_refname($hash_base)) {
 258                 die_error(undef, "Invalid hash base parameter");
 259         }
 260 }
 261
 262 our $hash_parent_base = $cgi->param('hpb');
 263 if (defined $hash_parent_base) {
 264         if (!validate_refname($hash_parent_base)) {
 265                 die_error(undef, "Invalid hash parent base parameter");
 266         }
 267 }
 268
 269 # other parameters
 270 our $page = $cgi->param('pg');
 271 if (defined $page) {
 272         if ($page =~ m/[^0-9]/) {
 273                 die_error(undef, "Invalid page parameter");
 274         }
 275 }
 276
 277 our $searchtext = $cgi->param('s');
 278 if (defined $searchtext) {
 279         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 280                 die_error(undef, "Invalid search parameter");
 281         }
 282         $searchtext = quotemeta $searchtext;
 283 }
 284
 285 # now read PATH_INFO and use it as alternative to parameters
 286 sub evaluate_path_info {
 287         return if defined $project;
 288         my $path_info = $ENV{"PATH_INFO"};
 289         return if !$path_info;
 290         $path_info =~ s,^/+,,;
 291         return if !$path_info;
 292         # find which part of PATH_INFO is project
 293         $project = $path_info;
 294         $project =~ s,/+$,,;
 295         while ($project && !-e "$projectroot/$project/HEAD") {
 296                 $project =~ s,/*[^/]*$,,;
 297         }
 298         # validate project
 299         $project = validate_pathname($project);
 300         if (!$project ||
 301             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 302             ($strict_export && !project_in_list($project))) {
 303                 undef $project;
 304                 return;
 305         }
 306         # do not change any parameters if an action is given using the query string
 307         return if $action;
 308         $path_info =~ s,^$project/*,,;
 309         my ($refname, $pathname) = split(/:/, $path_info, 2);
 310         if (defined $pathname) {
 311                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 312                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 313                 $pathname =~ s,^/+,,;
 314                 if (!$pathname || substr($pathname, -1) eq "/") {
 315                         $action  ||= "tree";
 316                         $pathname =~ s,/$,,;
 317                 } else {
 318                         $action  ||= "blob_plain";
 319                 }
 320                 $hash_base ||= validate_refname($refname);
 321                 $file_name ||= validate_pathname($pathname);
 322         } elsif (defined $refname) {
 323                 # we got "project.git/branch"
 324                 $action ||= "shortlog";
 325                 $hash   ||= validate_refname($refname);
 326         }
 327 }
 328 evaluate_path_info();
 329
 330 # path to the current git repository
 331 our $git_dir;
 332 $git_dir = "$projectroot/$project" if $project;
 333
 334 # dispatch
 335 my %actions = (
 336         "blame" => \&git_blame2,
 337         "blobdiff" => \&git_blobdiff,
 338         "blobdiff_plain" => \&git_blobdiff_plain,
 339         "blob" => \&git_blob,
 340         "blob_plain" => \&git_blob_plain,
 341         "commitdiff" => \&git_commitdiff,
 342         "commitdiff_plain" => \&git_commitdiff_plain,
 343         "commit" => \&git_commit,
 344         "heads" => \&git_heads,
 345         "history" => \&git_history,
 346         "log" => \&git_log,
 347         "rss" => \&git_rss,
 348         "search" => \&git_search,
 349         "shortlog" => \&git_shortlog,
 350         "summary" => \&git_summary,
 351         "tag" => \&git_tag,
 352         "tags" => \&git_tags,
 353         "tree" => \&git_tree,
 354         "snapshot" => \&git_snapshot,
 355         # those below don't need $project
 356         "opml" => \&git_opml,
 357         "project_list" => \&git_project_list,
 358         "project_index" => \&git_project_index,
 359 );
 360
 361 if (defined $project) {
 362         $action ||= 'summary';
 363 } else {
 364         $action ||= 'project_list';
 365 }
 366 if (!defined($actions{$action})) {
 367         die_error(undef, "Unknown action");
 368 }
 369 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 370     !$project) {
 371         die_error(undef, "Project needed");
 372 }
 373 $actions{$action}->();
 374 exit;
 375
 376 ## ======================================================================
 377 ## action links
 378
 379 sub href(%) {
 380         my %params = @_;
 381
 382         my @mapping = (
 383                 project => "p",
 384                 action => "a",
 385                 file_name => "f",
 386                 file_parent => "fp",
 387                 hash => "h",
 388                 hash_parent => "hp",
 389                 hash_base => "hb",
 390                 hash_parent_base => "hpb",
 391                 page => "pg",
 392                 order => "o",
 393                 searchtext => "s",
 394         );
 395         my %mapping = @mapping;
 396
 397         $params{'project'} = $project unless exists $params{'project'};
 398
 399         my @result = ();
 400         for (my $i = 0; $i < @mapping; $i += 2) {
 401                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 402                 if (defined $params{$name}) {
 403                         push @result, $symbol . "=" . esc_param($params{$name});
 404                 }
 405         }
 406         return "$my_uri?" . join(';', @result);
 407 }
 408
 409
 410 ## ======================================================================
 411 ## validation, quoting/unquoting and escaping
 412
 413 sub validate_pathname {
 414         my $input = shift || return undef;
 415
 416         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 417         # at the beginning, at the end, and between slashes.
 418         # also this catches doubled slashes
 419         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 420                 return undef;
 421         }
 422         # no null characters
 423         if ($input =~ m!\0!) {
 424                 return undef;
 425         }
 426         return $input;
 427 }
 428
 429 sub validate_refname {
 430         my $input = shift || return undef;
 431
 432         # textual hashes are O.K.
 433         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 434                 return $input;
 435         }
 436         # it must be correct pathname
 437         $input = validate_pathname($input)
 438                 or return undef;
 439         # restrictions on ref name according to git-check-ref-format
 440         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 441                 return undef;
 442         }
 443         return $input;
 444 }
 445
 446 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 447 sub to_utf8 {
 448         my $str = shift;
 449         return decode("utf8", $str, Encode::FB_DEFAULT);
 450 }
 451
 452 # quote unsafe chars, but keep the slash, even when it's not
 453 # correct, but quoted slashes look too horrible in bookmarks
 454 sub esc_param {
 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 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 463 sub esc_url {
 464         my $str = shift;
 465         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 466         $str =~ s/\+/%2B/g;
 467         $str =~ s/ /\+/g;
 468         return $str;
 469 }
 470
 471 # replace invalid utf8 character with SUBSTITUTION sequence
 472 sub esc_html {
 473         my $str = shift;
 474         $str = to_utf8($str);
 475         $str = escapeHTML($str);
 476         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 477         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 478         return $str;
 479 }
 480
 481 # git may return quoted and escaped filenames
 482 sub unquote {
 483         my $str = shift;
 484         if ($str =~ m/^"(.*)"$/) {
 485                 $str = $1;
 486                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 487         }
 488         return $str;
 489 }
 490
 491 # escape tabs (convert tabs to spaces)
 492 sub untabify {
 493         my $line = shift;
 494
 495         while ((my $pos = index($line, "\t")) != -1) {
 496                 if (my $count = (8 - ($pos % 8))) {
 497                         my $spaces = ' ' x $count;
 498                         $line =~ s/\t/$spaces/;
 499                 }
 500         }
 501
 502         return $line;
 503 }
 504
 505 sub project_in_list {
 506         my $project = shift;
 507         my @list = git_get_projects_list();
 508         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 509 }
 510
 511 ## ----------------------------------------------------------------------
 512 ## HTML aware string manipulation
 513
 514 sub chop_str {
 515         my $str = shift;
 516         my $len = shift;
 517         my $add_len = shift || 10;
 518
 519         # allow only $len chars, but don't cut a word if it would fit in $add_len
 520         # if it doesn't fit, cut it if it's still longer than the dots we would add
 521         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 522         my $body = $1;
 523         my $tail = $2;
 524         if (length($tail) > 4) {
 525                 $tail = " ...";
 526                 $body =~ s/&[^;]*$//; # remove chopped character entities
 527         }
 528         return "$body$tail";
 529 }
 530
 531 ## ----------------------------------------------------------------------
 532 ## functions returning short strings
 533
 534 # CSS class for given age value (in seconds)
 535 sub age_class {
 536         my $age = shift;
 537
 538         if ($age < 60*60*2) {
 539                 return "age0";
 540         } elsif ($age < 60*60*24*2) {
 541                 return "age1";
 542         } else {
 543                 return "age2";
 544         }
 545 }
 546
 547 # convert age in seconds to "nn units ago" string
 548 sub age_string {
 549         my $age = shift;
 550         my $age_str;
 551
 552         if ($age > 60*60*24*365*2) {
 553                 $age_str = (int $age/60/60/24/365);
 554                 $age_str .= " years ago";
 555         } elsif ($age > 60*60*24*(365/12)*2) {
 556                 $age_str = int $age/60/60/24/(365/12);
 557                 $age_str .= " months ago";
 558         } elsif ($age > 60*60*24*7*2) {
 559                 $age_str = int $age/60/60/24/7;
 560                 $age_str .= " weeks ago";
 561         } elsif ($age > 60*60*24*2) {
 562                 $age_str = int $age/60/60/24;
 563                 $age_str .= " days ago";
 564         } elsif ($age > 60*60*2) {
 565                 $age_str = int $age/60/60;
 566                 $age_str .= " hours ago";
 567         } elsif ($age > 60*2) {
 568                 $age_str = int $age/60;
 569                 $age_str .= " min ago";
 570         } elsif ($age > 2) {
 571                 $age_str = int $age;
 572                 $age_str .= " sec ago";
 573         } else {
 574                 $age_str .= " right now";
 575         }
 576         return $age_str;
 577 }
 578
 579 # convert file mode in octal to symbolic file mode string
 580 sub mode_str {
 581         my $mode = oct shift;
 582
 583         if (S_ISDIR($mode & S_IFMT)) {
 584                 return 'drwxr-xr-x';
 585         } elsif (S_ISLNK($mode)) {
 586                 return 'lrwxrwxrwx';
 587         } elsif (S_ISREG($mode)) {
 588                 # git cares only about the executable bit
 589                 if ($mode & S_IXUSR) {
 590                         return '-rwxr-xr-x';
 591                 } else {
 592                         return '-rw-r--r--';
 593                 };
 594         } else {
 595                 return '----------';
 596         }
 597 }
 598
 599 # convert file mode in octal to file type string
 600 sub file_type {
 601         my $mode = shift;
 602
 603         if ($mode !~ m/^[0-7]+$/) {
 604                 return $mode;
 605         } else {
 606                 $mode = oct $mode;
 607         }
 608
 609         if (S_ISDIR($mode & S_IFMT)) {
 610                 return "directory";
 611         } elsif (S_ISLNK($mode)) {
 612                 return "symlink";
 613         } elsif (S_ISREG($mode)) {
 614                 return "file";
 615         } else {
 616                 return "unknown";
 617         }
 618 }
 619
 620 ## ----------------------------------------------------------------------
 621 ## functions returning short HTML fragments, or transforming HTML fragments
 622 ## which don't beling to other sections
 623
 624 # format line of commit message or tag comment
 625 sub format_log_line_html {
 626         my $line = shift;
 627
 628         $line = esc_html($line);
 629         $line =~ s/ /&nbsp;/g;
 630         if ($line =~ m/([0-9a-fA-F]{40})/) {
 631                 my $hash_text = $1;
 632                 if (git_get_type($hash_text) eq "commit") {
 633                         my $link =
 634                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 635                                         -class => "text"}, $hash_text);
 636                         $line =~ s/$hash_text/$link/;
 637                 }
 638         }
 639         return $line;
 640 }
 641
 642 # format marker of refs pointing to given object
 643 sub format_ref_marker {
 644         my ($refs, $id) = @_;
 645         my $markers = '';
 646
 647         if (defined $refs->{$id}) {
 648                 foreach my $ref (@{$refs->{$id}}) {
 649                         my ($type, $name) = qw();
 650                         # e.g. tags/v2.6.11 or heads/next
 651                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 652                                 $type = $1;
 653                                 $name = $2;
 654                         } else {
 655                                 $type = "ref";
 656                                 $name = $ref;
 657                         }
 658
 659                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 660                 }
 661         }
 662
 663         if ($markers) {
 664                 return ' <span class="refs">'. $markers . '</span>';
 665         } else {
 666                 return "";
 667         }
 668 }
 669
 670 # format, perhaps shortened and with markers, title line
 671 sub format_subject_html {
 672         my ($long, $short, $href, $extra) = @_;
 673         $extra = '' unless defined($extra);
 674
 675         if (length($short) < length($long)) {
 676                 return $cgi->a({-href => $href, -class => "list subject",
 677                                 -title => to_utf8($long)},
 678                        esc_html($short) . $extra);
 679         } else {
 680                 return $cgi->a({-href => $href, -class => "list subject"},
 681                        esc_html($long)  . $extra);
 682         }
 683 }
 684
 685 sub format_diff_line {
 686         my $line = shift;
 687         my $char = substr($line, 0, 1);
 688         my $diff_class = "";
 689
 690         chomp $line;
 691
 692         if ($char eq '+') {
 693                 $diff_class = " add";
 694         } elsif ($char eq "-") {
 695                 $diff_class = " rem";
 696         } elsif ($char eq "@") {
 697                 $diff_class = " chunk_header";
 698         } elsif ($char eq "\\") {
 699                 $diff_class = " incomplete";
 700         }
 701         $line = untabify($line);
 702         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 703 }
 704
 705 ## ----------------------------------------------------------------------
 706 ## git utility subroutines, invoking git commands
 707
 708 # returns path to the core git executable and the --git-dir parameter as list
 709 sub git_cmd {
 710         return $GIT, '--git-dir='.$git_dir;
 711 }
 712
 713 # returns path to the core git executable and the --git-dir parameter as string
 714 sub git_cmd_str {
 715         return join(' ', git_cmd());
 716 }
 717
 718 # get HEAD ref of given project as hash
 719 sub git_get_head_hash {
 720         my $project = shift;
 721         my $o_git_dir = $git_dir;
 722         my $retval = undef;
 723         $git_dir = "$projectroot/$project";
 724         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 725                 my $head = <$fd>;
 726                 close $fd;
 727                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 728                         $retval = $1;
 729                 }
 730         }
 731         if (defined $o_git_dir) {
 732                 $git_dir = $o_git_dir;
 733         }
 734         return $retval;
 735 }
 736
 737 # get type of given object
 738 sub git_get_type {
 739         my $hash = shift;
 740
 741         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 742         my $type = <$fd>;
 743         close $fd or return;
 744         chomp $type;
 745         return $type;
 746 }
 747
 748 sub git_get_project_config {
 749         my ($key, $type) = @_;
 750
 751         return unless ($key);
 752         $key =~ s/^gitweb\.//;
 753         return if ($key =~ m/\W/);
 754
 755         my @x = (git_cmd(), 'repo-config');
 756         if (defined $type) { push @x, $type; }
 757         push @x, "--get";
 758         push @x, "gitweb.$key";
 759         my $val = qx(@x);
 760         chomp $val;
 761         return ($val);
 762 }
 763
 764 # get hash of given path at given ref
 765 sub git_get_hash_by_path {
 766         my $base = shift;
 767         my $path = shift || return undef;
 768         my $type = shift;
 769
 770         $path =~ s,/+$,,;
 771
 772         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 773                 or die_error(undef, "Open git-ls-tree failed");
 774         my $line = <$fd>;
 775         close $fd or return undef;
 776
 777         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 778         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 779         if (defined $type && $type ne $2) {
 780                 # type doesn't match
 781                 return undef;
 782         }
 783         return $3;
 784 }
 785
 786 ## ......................................................................
 787 ## git utility functions, directly accessing git repository
 788
 789 sub git_get_project_description {
 790         my $path = shift;
 791
 792         open my $fd, "$projectroot/$path/description" or return undef;
 793         my $descr = <$fd>;
 794         close $fd;
 795         chomp $descr;
 796         return $descr;
 797 }
 798
 799 sub git_get_project_url_list {
 800         my $path = shift;
 801
 802         open my $fd, "$projectroot/$path/cloneurl" or return;
 803         my @git_project_url_list = map { chomp; $_ } <$fd>;
 804         close $fd;
 805
 806         return wantarray ? @git_project_url_list : \@git_project_url_list;
 807 }
 808
 809 sub git_get_projects_list {
 810         my @list;
 811
 812         if (-d $projects_list) {
 813                 # search in directory
 814                 my $dir = $projects_list;
 815                 my $pfxlen = length("$dir");
 816
 817                 File::Find::find({
 818                         follow_fast => 1, # follow symbolic links
 819                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 820                         wanted => sub {
 821                                 # skip project-list toplevel, if we get it.
 822                                 return if (m!^[/.]$!);
 823                                 # only directories can be git repositories
 824                                 return unless (-d $_);
 825
 826                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 827                                 # we check related file in $projectroot
 828                                 if (-e "$projectroot/$subdir/HEAD" && (!$export_ok ||
 829                                     -e "$projectroot/$subdir/$export_ok")) {
 830                                         push @list, { path => $subdir };
 831                                         $File::Find::prune = 1;
 832                                 }
 833                         },
 834                 }, "$dir");
 835
 836         } elsif (-f $projects_list) {
 837                 # read from file(url-encoded):
 838                 # 'git%2Fgit.git Linus+Torvalds'
 839                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 840                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 841                 open my ($fd), $projects_list or return;
 842                 while (my $line = <$fd>) {
 843                         chomp $line;
 844                         my ($path, $owner) = split ' ', $line;
 845                         $path = unescape($path);
 846                         $owner = unescape($owner);
 847                         if (!defined $path) {
 848                                 next;
 849                         }
 850                         if (-e "$projectroot/$path/HEAD" && (!$export_ok ||
 851                             -e "$projectroot/$path/$export_ok")) {
 852                                 my $pr = {
 853                                         path => $path,
 854                                         owner => to_utf8($owner),
 855                                 };
 856                                 push @list, $pr
 857                         }
 858                 }
 859                 close $fd;
 860         }
 861         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 862         return @list;
 863 }
 864
 865 sub git_get_project_owner {
 866         my $project = shift;
 867         my $owner;
 868
 869         return undef unless $project;
 870
 871         # read from file (url-encoded):
 872         # 'git%2Fgit.git Linus+Torvalds'
 873         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 874         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 875         if (-f $projects_list) {
 876                 open (my $fd , $projects_list);
 877                 while (my $line = <$fd>) {
 878                         chomp $line;
 879                         my ($pr, $ow) = split ' ', $line;
 880                         $pr = unescape($pr);
 881                         $ow = unescape($ow);
 882                         if ($pr eq $project) {
 883                                 $owner = to_utf8($ow);
 884                                 last;
 885                         }
 886                 }
 887                 close $fd;
 888         }
 889         if (!defined $owner) {
 890                 $owner = get_file_owner("$projectroot/$project");
 891         }
 892
 893         return $owner;
 894 }
 895
 896 sub git_get_references {
 897         my $type = shift || "";
 898         my %refs;
 899         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 900         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 901         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
 902                 or return;
 903
 904         while (my $line = <$fd>) {
 905                 chomp $line;
 906                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 907                         if (defined $refs{$1}) {
 908                                 push @{$refs{$1}}, $2;
 909                         } else {
 910                                 $refs{$1} = [ $2 ];
 911                         }
 912                 }
 913         }
 914         close $fd or return;
 915         return \%refs;
 916 }
 917
 918 sub git_get_rev_name_tags {
 919         my $hash = shift || return undef;
 920
 921         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 922                 or return;
 923         my $name_rev = <$fd>;
 924         close $fd;
 925
 926         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 927                 return $1;
 928         } else {
 929                 # catches also '$hash undefined' output
 930                 return undef;
 931         }
 932 }
 933
 934 ## ----------------------------------------------------------------------
 935 ## parse to hash functions
 936
 937 sub parse_date {
 938         my $epoch = shift;
 939         my $tz = shift || "-0000";
 940
 941         my %date;
 942         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 943         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 944         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 945         $date{'hour'} = $hour;
 946         $date{'minute'} = $min;
 947         $date{'mday'} = $mday;
 948         $date{'day'} = $days[$wday];
 949         $date{'month'} = $months[$mon];
 950         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 951                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 952         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 953                              $mday, $months[$mon], $hour ,$min;
 954
 955         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 956         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 957         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 958         $date{'hour_local'} = $hour;
 959         $date{'minute_local'} = $min;
 960         $date{'tz_local'} = $tz;
 961         return %date;
 962 }
 963
 964 sub parse_tag {
 965         my $tag_id = shift;
 966         my %tag;
 967         my @comment;
 968
 969         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 970         $tag{'id'} = $tag_id;
 971         while (my $line = <$fd>) {
 972                 chomp $line;
 973                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 974                         $tag{'object'} = $1;
 975                 } elsif ($line =~ m/^type (.+)$/) {
 976                         $tag{'type'} = $1;
 977                 } elsif ($line =~ m/^tag (.+)$/) {
 978                         $tag{'name'} = $1;
 979                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 980                         $tag{'author'} = $1;
 981                         $tag{'epoch'} = $2;
 982                         $tag{'tz'} = $3;
 983                 } elsif ($line =~ m/--BEGIN/) {
 984                         push @comment, $line;
 985                         last;
 986                 } elsif ($line eq "") {
 987                         last;
 988                 }
 989         }
 990         push @comment, <$fd>;
 991         $tag{'comment'} = \@comment;
 992         close $fd or return;
 993         if (!defined $tag{'name'}) {
 994                 return
 995         };
 996         return %tag
 997 }
 998
 999 sub parse_commit {
1000         my $commit_id = shift;
1001         my $commit_text = shift;
1002
1003         my @commit_lines;
1004         my %co;
1005
1006         if (defined $commit_text) {
1007                 @commit_lines = @$commit_text;
1008         } else {
1009                 $/ = "\0";
1010                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
1011                         or return;
1012                 @commit_lines = split '\n', <$fd>;
1013                 close $fd or return;
1014                 $/ = "\n";
1015                 pop @commit_lines;
1016         }
1017         my $header = shift @commit_lines;
1018         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1019                 return;
1020         }
1021         ($co{'id'}, my @parents) = split ' ', $header;
1022         $co{'parents'} = \@parents;
1023         $co{'parent'} = $parents[0];
1024         while (my $line = shift @commit_lines) {
1025                 last if $line eq "\n";
1026                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1027                         $co{'tree'} = $1;
1028                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1029                         $co{'author'} = $1;
1030                         $co{'author_epoch'} = $2;
1031                         $co{'author_tz'} = $3;
1032                         if ($co{'author'} =~ m/^([^<]+) </) {
1033                                 $co{'author_name'} = $1;
1034                         } else {
1035                                 $co{'author_name'} = $co{'author'};
1036                         }
1037                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1038                         $co{'committer'} = $1;
1039                         $co{'committer_epoch'} = $2;
1040                         $co{'committer_tz'} = $3;
1041                         $co{'committer_name'} = $co{'committer'};
1042                         $co{'committer_name'} =~ s/ <.*//;
1043                 }
1044         }
1045         if (!defined $co{'tree'}) {
1046                 return;
1047         };
1048
1049         foreach my $title (@commit_lines) {
1050                 $title =~ s/^    //;
1051                 if ($title ne "") {
1052                         $co{'title'} = chop_str($title, 80, 5);
1053                         # remove leading stuff of merges to make the interesting part visible
1054                         if (length($title) > 50) {
1055                                 $title =~ s/^Automatic //;
1056                                 $title =~ s/^merge (of|with) /Merge ... /i;
1057                                 if (length($title) > 50) {
1058                                         $title =~ s/(http|rsync):\/\///;
1059                                 }
1060                                 if (length($title) > 50) {
1061                                         $title =~ s/(master|www|rsync)\.//;
1062                                 }
1063                                 if (length($title) > 50) {
1064                                         $title =~ s/kernel.org:?//;
1065                                 }
1066                                 if (length($title) > 50) {
1067                                         $title =~ s/\/pub\/scm//;
1068                                 }
1069                         }
1070                         $co{'title_short'} = chop_str($title, 50, 5);
1071                         last;
1072                 }
1073         }
1074         # remove added spaces
1075         foreach my $line (@commit_lines) {
1076                 $line =~ s/^    //;
1077         }
1078         $co{'comment'} = \@commit_lines;
1079
1080         my $age = time - $co{'committer_epoch'};
1081         $co{'age'} = $age;
1082         $co{'age_string'} = age_string($age);
1083         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1084         if ($age > 60*60*24*7*2) {
1085                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1086                 $co{'age_string_age'} = $co{'age_string'};
1087         } else {
1088                 $co{'age_string_date'} = $co{'age_string'};
1089                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1090         }
1091         return %co;
1092 }
1093
1094 # parse ref from ref_file, given by ref_id, with given type
1095 sub parse_ref {
1096         my $ref_file = shift;
1097         my $ref_id = shift;
1098         my $type = shift || git_get_type($ref_id);
1099         my %ref_item;
1100
1101         $ref_item{'type'} = $type;
1102         $ref_item{'id'} = $ref_id;
1103         $ref_item{'epoch'} = 0;
1104         $ref_item{'age'} = "unknown";
1105         if ($type eq "tag") {
1106                 my %tag = parse_tag($ref_id);
1107                 $ref_item{'comment'} = $tag{'comment'};
1108                 if ($tag{'type'} eq "commit") {
1109                         my %co = parse_commit($tag{'object'});
1110                         $ref_item{'epoch'} = $co{'committer_epoch'};
1111                         $ref_item{'age'} = $co{'age_string'};
1112                 } elsif (defined($tag{'epoch'})) {
1113                         my $age = time - $tag{'epoch'};
1114                         $ref_item{'epoch'} = $tag{'epoch'};
1115                         $ref_item{'age'} = age_string($age);
1116                 }
1117                 $ref_item{'reftype'} = $tag{'type'};
1118                 $ref_item{'name'} = $tag{'name'};
1119                 $ref_item{'refid'} = $tag{'object'};
1120         } elsif ($type eq "commit"){
1121                 my %co = parse_commit($ref_id);
1122                 $ref_item{'reftype'} = "commit";
1123                 $ref_item{'name'} = $ref_file;
1124                 $ref_item{'title'} = $co{'title'};
1125                 $ref_item{'refid'} = $ref_id;
1126                 $ref_item{'epoch'} = $co{'committer_epoch'};
1127                 $ref_item{'age'} = $co{'age_string'};
1128         } else {
1129                 $ref_item{'reftype'} = $type;
1130                 $ref_item{'name'} = $ref_file;
1131                 $ref_item{'refid'} = $ref_id;
1132         }
1133
1134         return %ref_item;
1135 }
1136
1137 # parse line of git-diff-tree "raw" output
1138 sub parse_difftree_raw_line {
1139         my $line = shift;
1140         my %res;
1141
1142         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1143         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1144         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1145                 $res{'from_mode'} = $1;
1146                 $res{'to_mode'} = $2;
1147                 $res{'from_id'} = $3;
1148                 $res{'to_id'} = $4;
1149                 $res{'status'} = $5;
1150                 $res{'similarity'} = $6;
1151                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1152                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1153                 } else {
1154                         $res{'file'} = unquote($7);
1155                 }
1156         }
1157         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1158         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1159                 $res{'commit'} = $1;
1160         }
1161
1162         return wantarray ? %res : \%res;
1163 }
1164
1165 # parse line of git-ls-tree output
1166 sub parse_ls_tree_line ($;%) {
1167         my $line = shift;
1168         my %opts = @_;
1169         my %res;
1170
1171         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1172         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1173
1174         $res{'mode'} = $1;
1175         $res{'type'} = $2;
1176         $res{'hash'} = $3;
1177         if ($opts{'-z'}) {
1178                 $res{'name'} = $4;
1179         } else {
1180                 $res{'name'} = unquote($4);
1181         }
1182
1183         return wantarray ? %res : \%res;
1184 }
1185
1186 ## ......................................................................
1187 ## parse to array of hashes functions
1188
1189 sub git_get_refs_list {
1190         my $type = shift || "";
1191         my %refs;
1192         my @reflist;
1193
1194         my @refs;
1195         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1196                 or return;
1197         while (my $line = <$fd>) {
1198                 chomp $line;
1199                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?([^\^]+))(\^\{\})?$/) {
1200                         if (defined $refs{$1}) {
1201                                 push @{$refs{$1}}, $2;
1202                         } else {
1203                                 $refs{$1} = [ $2 ];
1204                         }
1205
1206                         if (! $4) { # unpeeled, direct reference
1207                                 push @refs, { hash => $1, name => $3 }; # without type
1208                         } elsif ($3 eq $refs[-1]{'name'}) {
1209                                 # most likely a tag is followed by its peeled
1210                                 # (deref) one, and when that happens we know the
1211                                 # previous one was of type 'tag'.
1212                                 $refs[-1]{'type'} = "tag";
1213                         }
1214                 }
1215         }
1216         close $fd;
1217
1218         foreach my $ref (@refs) {
1219                 my $ref_file = $ref->{'name'};
1220                 my $ref_id   = $ref->{'hash'};
1221
1222                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1223                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1224
1225                 push @reflist, \%ref_item;
1226         }
1227         # sort refs by age
1228         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1229         return (\@reflist, \%refs);
1230 }
1231
1232 ## ----------------------------------------------------------------------
1233 ## filesystem-related functions
1234
1235 sub get_file_owner {
1236         my $path = shift;
1237
1238         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1239         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1240         if (!defined $gcos) {
1241                 return undef;
1242         }
1243         my $owner = $gcos;
1244         $owner =~ s/[,;].*$//;
1245         return to_utf8($owner);
1246 }
1247
1248 ## ......................................................................
1249 ## mimetype related functions
1250
1251 sub mimetype_guess_file {
1252         my $filename = shift;
1253         my $mimemap = shift;
1254         -r $mimemap or return undef;
1255
1256         my %mimemap;
1257         open(MIME, $mimemap) or return undef;
1258         while (<MIME>) {
1259                 next if m/^#/; # skip comments
1260                 my ($mime, $exts) = split(/\t+/);
1261                 if (defined $exts) {
1262                         my @exts = split(/\s+/, $exts);
1263                         foreach my $ext (@exts) {
1264                                 $mimemap{$ext} = $mime;
1265                         }
1266                 }
1267         }
1268         close(MIME);
1269
1270         $filename =~ /\.([^.]*)$/;
1271         return $mimemap{$1};
1272 }
1273
1274 sub mimetype_guess {
1275         my $filename = shift;
1276         my $mime;
1277         $filename =~ /\./ or return undef;
1278
1279         if ($mimetypes_file) {
1280                 my $file = $mimetypes_file;
1281                 if ($file !~ m!^/!) { # if it is relative path
1282                         # it is relative to project
1283                         $file = "$projectroot/$project/$file";
1284                 }
1285                 $mime = mimetype_guess_file($filename, $file);
1286         }
1287         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1288         return $mime;
1289 }
1290
1291 sub blob_mimetype {
1292         my $fd = shift;
1293         my $filename = shift;
1294
1295         if ($filename) {
1296                 my $mime = mimetype_guess($filename);
1297                 $mime and return $mime;
1298         }
1299
1300         # just in case
1301         return $default_blob_plain_mimetype unless $fd;
1302
1303         if (-T $fd) {
1304                 return 'text/plain' .
1305                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1306         } elsif (! $filename) {
1307                 return 'application/octet-stream';
1308         } elsif ($filename =~ m/\.png$/i) {
1309                 return 'image/png';
1310         } elsif ($filename =~ m/\.gif$/i) {
1311                 return 'image/gif';
1312         } elsif ($filename =~ m/\.jpe?g$/i) {
1313                 return 'image/jpeg';
1314         } else {
1315                 return 'application/octet-stream';
1316         }
1317 }
1318
1319 ## ======================================================================
1320 ## functions printing HTML: header, footer, error page
1321
1322 sub git_header_html {
1323         my $status = shift || "200 OK";
1324         my $expires = shift;
1325
1326         my $title = "$site_name git";
1327         if (defined $project) {
1328                 $title .= " - $project";
1329                 if (defined $action) {
1330                         $title .= "/$action";
1331                         if (defined $file_name) {
1332                                 $title .= " - " . esc_html($file_name);
1333                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1334                                         $title .= "/";
1335                                 }
1336                         }
1337                 }
1338         }
1339         my $content_type;
1340         # require explicit support from the UA if we are to send the page as
1341         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1342         # we have to do this because MSIE sometimes globs '*/*', pretending to
1343         # support xhtml+xml but choking when it gets what it asked for.
1344         if (defined $cgi->http('HTTP_ACCEPT') &&
1345             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1346             $cgi->Accept('application/xhtml+xml') != 0) {
1347                 $content_type = 'application/xhtml+xml';
1348         } else {
1349                 $content_type = 'text/html';
1350         }
1351         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1352                            -status=> $status, -expires => $expires);
1353         print <<EOF;
1354 <?xml version="1.0" encoding="utf-8"?>
1355 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1356 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1357 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1358 <!-- git core binaries version $git_version -->
1359 <head>
1360 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1361 <meta name="generator" content="gitweb/$version git/$git_version"/>
1362 <meta name="robots" content="index, nofollow"/>
1363 <title>$title</title>
1364 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1365 EOF
1366         if (defined $project) {
1367                 printf('<link rel="alternate" title="%s log" '.
1368                        'href="%s" type="application/rss+xml"/>'."\n",
1369                        esc_param($project), href(action=>"rss"));
1370         } else {
1371                 printf('<link rel="alternate" title="%s projects list" '.
1372                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1373                        $site_name, href(project=>undef, action=>"project_index"));
1374                 printf('<link rel="alternate" title="%s projects logs" '.
1375                        'href="%s" type="text/x-opml"/>'."\n",
1376                        $site_name, href(project=>undef, action=>"opml"));
1377         }
1378         if (defined $favicon) {
1379                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1380         }
1381
1382         print "</head>\n" .
1383               "<body>\n" .
1384               "<div class=\"page_header\">\n" .
1385               "<a href=\"" . esc_html($githelp_url) .
1386               "\" title=\"" . esc_html($githelp_label) .
1387               "\">" .
1388               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1389               "</a>\n";
1390         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1391         if (defined $project) {
1392                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1393                 if (defined $action) {
1394                         print " / $action";
1395                 }
1396                 print "\n";
1397                 if (!defined $searchtext) {
1398                         $searchtext = "";
1399                 }
1400                 my $search_hash;
1401                 if (defined $hash_base) {
1402                         $search_hash = $hash_base;
1403                 } elsif (defined $hash) {
1404                         $search_hash = $hash;
1405                 } else {
1406                         $search_hash = "HEAD";
1407                 }
1408                 $cgi->param("a", "search");
1409                 $cgi->param("h", $search_hash);
1410                 print $cgi->startform(-method => "get", -action => $my_uri) .
1411                       "<div class=\"search\">\n" .
1412                       $cgi->hidden(-name => "p") . "\n" .
1413                       $cgi->hidden(-name => "a") . "\n" .
1414                       $cgi->hidden(-name => "h") . "\n" .
1415                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1416                       "</div>" .
1417                       $cgi->end_form() . "\n";
1418         }
1419         print "</div>\n";
1420 }
1421
1422 sub git_footer_html {
1423         print "<div class=\"page_footer\">\n";
1424         if (defined $project) {
1425                 my $descr = git_get_project_description($project);
1426                 if (defined $descr) {
1427                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1428                 }
1429                 print $cgi->a({-href => href(action=>"rss"),
1430                               -class => "rss_logo"}, "RSS") . "\n";
1431         } else {
1432                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1433                               -class => "rss_logo"}, "OPML") . " ";
1434                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1435                               -class => "rss_logo"}, "TXT") . "\n";
1436         }
1437         print "</div>\n" .
1438               "</body>\n" .
1439               "</html>";
1440 }
1441
1442 sub die_error {
1443         my $status = shift || "403 Forbidden";
1444         my $error = shift || "Malformed query, file missing or permission denied";
1445
1446         git_header_html($status);
1447         print <<EOF;
1448 <div class="page_body">
1449 <br /><br />
1450 $status - $error
1451 <br />
1452 </div>
1453 EOF
1454         git_footer_html();
1455         exit;
1456 }
1457
1458 ## ----------------------------------------------------------------------
1459 ## functions printing or outputting HTML: navigation
1460
1461 sub git_print_page_nav {
1462         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1463         $extra = '' if !defined $extra; # pager or formats
1464
1465         my @navs = qw(summary shortlog log commit commitdiff tree);
1466         if ($suppress) {
1467                 @navs = grep { $_ ne $suppress } @navs;
1468         }
1469
1470         my %arg = map { $_ => {action=>$_} } @navs;
1471         if (defined $head) {
1472                 for (qw(commit commitdiff)) {
1473                         $arg{$_}{hash} = $head;
1474                 }
1475                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1476                         for (qw(shortlog log)) {
1477                                 $arg{$_}{hash} = $head;
1478                         }
1479                 }
1480         }
1481         $arg{tree}{hash} = $treehead if defined $treehead;
1482         $arg{tree}{hash_base} = $treebase if defined $treebase;
1483
1484         print "<div class=\"page_nav\">\n" .
1485                 (join " | ",
1486                  map { $_ eq $current ?
1487                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1488                  } @navs);
1489         print "<br/>\n$extra<br/>\n" .
1490               "</div>\n";
1491 }
1492
1493 sub format_paging_nav {
1494         my ($action, $hash, $head, $page, $nrevs) = @_;
1495         my $paging_nav;
1496
1497
1498         if ($hash ne $head || $page) {
1499                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1500         } else {
1501                 $paging_nav .= "HEAD";
1502         }
1503
1504         if ($page > 0) {
1505                 $paging_nav .= " &sdot; " .
1506                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1507                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1508         } else {
1509                 $paging_nav .= " &sdot; prev";
1510         }
1511
1512         if ($nrevs >= (100 * ($page+1)-1)) {
1513                 $paging_nav .= " &sdot; " .
1514                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1515                                  -accesskey => "n", -title => "Alt-n"}, "next");
1516         } else {
1517                 $paging_nav .= " &sdot; next";
1518         }
1519
1520         return $paging_nav;
1521 }
1522
1523 ## ......................................................................
1524 ## functions printing or outputting HTML: div
1525
1526 sub git_print_header_div {
1527         my ($action, $title, $hash, $hash_base) = @_;
1528         my %args = ();
1529
1530         $args{action} = $action;
1531         $args{hash} = $hash if $hash;
1532         $args{hash_base} = $hash_base if $hash_base;
1533
1534         print "<div class=\"header\">\n" .
1535               $cgi->a({-href => href(%args), -class => "title"},
1536               $title ? $title : $action) .
1537               "\n</div>\n";
1538 }
1539
1540 #sub git_print_authorship (\%) {
1541 sub git_print_authorship {
1542         my $co = shift;
1543
1544         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1545         print "<div class=\"author_date\">" .
1546               esc_html($co->{'author_name'}) .
1547               " [$ad{'rfc2822'}";
1548         if ($ad{'hour_local'} < 6) {
1549                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1550                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1551         } else {
1552                 printf(" (%02d:%02d %s)",
1553                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1554         }
1555         print "]</div>\n";
1556 }
1557
1558 sub git_print_page_path {
1559         my $name = shift;
1560         my $type = shift;
1561         my $hb = shift;
1562
1563         if (!defined $name) {
1564                 print "<div class=\"page_path\">/</div>\n";
1565         } else {
1566                 my @dirname = split '/', $name;
1567                 my $basename = pop @dirname;
1568                 my $fullname = '';
1569
1570                 print "<div class=\"page_path\">";
1571                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1572                               -title => 'tree root'}, "[$project]");
1573                 print " / ";
1574                 foreach my $dir (@dirname) {
1575                         $fullname .= ($fullname ? '/' : '') . $dir;
1576                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1577                                                      hash_base=>$hb),
1578                                       -title => $fullname}, esc_html($dir));
1579                         print " / ";
1580                 }
1581                 if (defined $type && $type eq 'blob') {
1582                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1583                                                      hash_base=>$hb),
1584                                       -title => $name}, esc_html($basename));
1585                 } elsif (defined $type && $type eq 'tree') {
1586                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1587                                                      hash_base=>$hb),
1588                                       -title => $name}, esc_html($basename));
1589                 } else {
1590                         print esc_html($basename);
1591                 }
1592                 print "<br/></div>\n";
1593         }
1594 }
1595
1596 # sub git_print_log (\@;%) {
1597 sub git_print_log ($;%) {
1598         my $log = shift;
1599         my %opts = @_;
1600
1601         if ($opts{'-remove_title'}) {
1602                 # remove title, i.e. first line of log
1603                 shift @$log;
1604         }
1605         # remove leading empty lines
1606         while (defined $log->[0] && $log->[0] eq "") {
1607                 shift @$log;
1608         }
1609
1610         # print log
1611         my $signoff = 0;
1612         my $empty = 0;
1613         foreach my $line (@$log) {
1614                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1615                         $signoff = 1;
1616                         $empty = 0;
1617                         if (! $opts{'-remove_signoff'}) {
1618                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1619                                 next;
1620                         } else {
1621                                 # remove signoff lines
1622                                 next;
1623                         }
1624                 } else {
1625                         $signoff = 0;
1626                 }
1627
1628                 # print only one empty line
1629                 # do not print empty line after signoff
1630                 if ($line eq "") {
1631                         next if ($empty || $signoff);
1632                         $empty = 1;
1633                 } else {
1634                         $empty = 0;
1635                 }
1636
1637                 print format_log_line_html($line) . "<br/>\n";
1638         }
1639
1640         if ($opts{'-final_empty_line'}) {
1641                 # end with single empty line
1642                 print "<br/>\n" unless $empty;
1643         }
1644 }
1645
1646 sub git_print_simplified_log {
1647         my $log = shift;
1648         my $remove_title = shift;
1649
1650         git_print_log($log,
1651                 -final_empty_line=> 1,
1652                 -remove_title => $remove_title);
1653 }
1654
1655 # print tree entry (row of git_tree), but without encompassing <tr> element
1656 sub git_print_tree_entry {
1657         my ($t, $basedir, $hash_base, $have_blame) = @_;
1658
1659         my %base_key = ();
1660         $base_key{hash_base} = $hash_base if defined $hash_base;
1661
1662         # The format of a table row is: mode list link.  Where mode is
1663         # the mode of the entry, list is the name of the entry, an href,
1664         # and link is the action links of the entry.
1665
1666         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1667         if ($t->{'type'} eq "blob") {
1668                 print "<td class=\"list\">" .
1669                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1670                                                file_name=>"$basedir$t->{'name'}", %base_key),
1671                                  -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1672                 print "<td class=\"link\">";
1673                 if ($have_blame) {
1674                         print $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1675                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
1676                                       "blame");
1677                 }
1678                 if (defined $hash_base) {
1679                         if ($have_blame) {
1680                                 print " | ";
1681                         }
1682                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1683                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1684                                       "history");
1685                 }
1686                 print " | " .
1687                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1688                                                file_name=>"$basedir$t->{'name'}")},
1689                                 "raw");
1690                 print "</td>\n";
1691
1692         } elsif ($t->{'type'} eq "tree") {
1693                 print "<td class=\"list\">";
1694                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1695                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1696                               esc_html($t->{'name'}));
1697                 print "</td>\n";
1698                 print "<td class=\"link\">";
1699                 if (defined $hash_base) {
1700                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1701                                                      file_name=>"$basedir$t->{'name'}")},
1702                                       "history");
1703                 }
1704                 print "</td>\n";
1705         }
1706 }
1707
1708 ## ......................................................................
1709 ## functions printing large fragments of HTML
1710
1711 sub git_difftree_body {
1712         my ($difftree, $hash, $parent) = @_;
1713
1714         print "<div class=\"list_head\">\n";
1715         if ($#{$difftree} > 10) {
1716                 print(($#{$difftree} + 1) . " files changed:\n");
1717         }
1718         print "</div>\n";
1719
1720         print "<table class=\"diff_tree\">\n";
1721         my $alternate = 1;
1722         my $patchno = 0;
1723         foreach my $line (@{$difftree}) {
1724                 my %diff = parse_difftree_raw_line($line);
1725
1726                 if ($alternate) {
1727                         print "<tr class=\"dark\">\n";
1728                 } else {
1729                         print "<tr class=\"light\">\n";
1730                 }
1731                 $alternate ^= 1;
1732
1733                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1734                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1735                 if ($diff{'to_mode'} ne ('0' x 6)) {
1736                         $to_mode_oct = oct $diff{'to_mode'};
1737                         if (S_ISREG($to_mode_oct)) { # only for regular file
1738                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1739                         }
1740                         $to_file_type = file_type($diff{'to_mode'});
1741                 }
1742                 if ($diff{'from_mode'} ne ('0' x 6)) {
1743                         $from_mode_oct = oct $diff{'from_mode'};
1744                         if (S_ISREG($to_mode_oct)) { # only for regular file
1745                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1746                         }
1747                         $from_file_type = file_type($diff{'from_mode'});
1748                 }
1749
1750                 if ($diff{'status'} eq "A") { # created
1751                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1752                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1753                         $mode_chng   .= "]</span>";
1754                         print "<td>";
1755                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1756                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1757                                        -class => "list"}, esc_html($diff{'file'}));
1758                         print "</td>\n";
1759                         print "<td>$mode_chng</td>\n";
1760                         print "<td class=\"link\">";
1761                         if ($action eq 'commitdiff') {
1762                                 # link to patch
1763                                 $patchno++;
1764                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1765                         }
1766                         print "</td>\n";
1767
1768                 } elsif ($diff{'status'} eq "D") { # deleted
1769                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1770                         print "<td>";
1771                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1772                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1773                                        -class => "list"}, esc_html($diff{'file'}));
1774                         print "</td>\n";
1775                         print "<td>$mode_chng</td>\n";
1776                         print "<td class=\"link\">";
1777                         if ($action eq 'commitdiff') {
1778                                 # link to patch
1779                                 $patchno++;
1780                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1781                                 print " | ";
1782                         }
1783                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1784                                                      file_name=>$diff{'file'})},
1785                                       "blame") . " | ";
1786                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1787                                                      file_name=>$diff{'file'})},
1788                                       "history");
1789                         print "</td>\n";
1790
1791                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1792                         my $mode_chnge = "";
1793                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1794                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1795                                 if ($from_file_type != $to_file_type) {
1796                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1797                                 }
1798                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1799                                         if ($from_mode_str && $to_mode_str) {
1800                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1801                                         } elsif ($to_mode_str) {
1802                                                 $mode_chnge .= " mode: $to_mode_str";
1803                                         }
1804                                 }
1805                                 $mode_chnge .= "]</span>\n";
1806                         }
1807                         print "<td>";
1808                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1809                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1810                                        -class => "list"}, esc_html($diff{'file'}));
1811                         print "</td>\n";
1812                         print "<td>$mode_chnge</td>\n";
1813                         print "<td class=\"link\">";
1814                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1815                                 if ($action eq 'commitdiff') {
1816                                         # link to patch
1817                                         $patchno++;
1818                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1819                                 } else {
1820                                         print $cgi->a({-href => href(action=>"blobdiff",
1821                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1822                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1823                                                                      file_name=>$diff{'file'})},
1824                                                       "diff");
1825                                 }
1826                                 print " | ";
1827                         }
1828                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
1829                                                      file_name=>$diff{'file'})},
1830                                       "blame") . " | ";
1831                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
1832                                                      file_name=>$diff{'file'})},
1833                                       "history");
1834                         print "</td>\n";
1835
1836                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1837                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1838                         my $nstatus = $status_name{$diff{'status'}};
1839                         my $mode_chng = "";
1840                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1841                                 # mode also for directories, so we cannot use $to_mode_str
1842                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1843                         }
1844                         print "<td>" .
1845                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1846                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1847                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1848                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1849                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1850                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1851                                       -class => "list"}, esc_html($diff{'from_file'})) .
1852                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1853                               "<td class=\"link\">";
1854                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1855                                 if ($action eq 'commitdiff') {
1856                                         # link to patch
1857                                         $patchno++;
1858                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1859                                 } else {
1860                                         print $cgi->a({-href => href(action=>"blobdiff",
1861                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1862                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1863                                                                      file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1864                                                       "diff");
1865                                 }
1866                                 print " | ";
1867                         }
1868                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1869                                                      file_name=>$diff{'from_file'})},
1870                                       "blame") . " | ";
1871                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1872                                                      file_name=>$diff{'from_file'})},
1873                                       "history");
1874                         print "</td>\n";
1875
1876                 } # we should not encounter Unmerged (U) or Unknown (X) status
1877                 print "</tr>\n";
1878         }
1879         print "</table>\n";
1880 }
1881
1882 sub git_patchset_body {
1883         my ($fd, $difftree, $hash, $hash_parent) = @_;
1884
1885         my $patch_idx = 0;
1886         my $in_header = 0;
1887         my $patch_found = 0;
1888         my $diffinfo;
1889
1890         print "<div class=\"patchset\">\n";
1891
1892         LINE:
1893         while (my $patch_line = <$fd>) {
1894                 chomp $patch_line;
1895
1896                 if ($patch_line =~ m/^diff /) { # "git diff" header
1897                         # beginning of patch (in patchset)
1898                         if ($patch_found) {
1899                                 # close previous patch
1900                                 print "</div>\n"; # class="patch"
1901                         } else {
1902                                 # first patch in patchset
1903                                 $patch_found = 1;
1904                         }
1905                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1906
1907                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1908                                 $diffinfo = $difftree->[$patch_idx];
1909                         } else {
1910                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1911                         }
1912                         $patch_idx++;
1913
1914                         # for now, no extended header, hence we skip empty patches
1915                         # companion to  next LINE if $in_header;
1916                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1917                                 $in_header = 1;
1918                                 next LINE;
1919                         }
1920
1921                         if ($diffinfo->{'status'} eq "A") { # added
1922                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1923                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1924                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1925                                               $diffinfo->{'to_id'}) . "(new)" .
1926                                       "</div>\n"; # class="diff_info"
1927
1928                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1929                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1930                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1931                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1932                                               $diffinfo->{'from_id'}) . "(deleted)" .
1933                                       "</div>\n"; # class="diff_info"
1934
1935                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1936                                  $diffinfo->{'status'} eq "C" || # copied
1937                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1938                                 print "<div class=\"diff_info\">" .
1939                                       file_type($diffinfo->{'from_mode'}) . ":" .
1940                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1941                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1942                                               $diffinfo->{'from_id'}) .
1943                                       " -> " .
1944                                       file_type($diffinfo->{'to_mode'}) . ":" .
1945                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1946                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1947                                               $diffinfo->{'to_id'});
1948                                 print "</div>\n"; # class="diff_info"
1949
1950                         } else { # modified, mode changed, ...
1951                                 print "<div class=\"diff_info\">" .
1952                                       file_type($diffinfo->{'from_mode'}) . ":" .
1953                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1954                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1955                                               $diffinfo->{'from_id'}) .
1956                                       " -> " .
1957                                       file_type($diffinfo->{'to_mode'}) . ":" .
1958                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1959                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1960                                               $diffinfo->{'to_id'});
1961                                 print "</div>\n"; # class="diff_info"
1962                         }
1963
1964                         #print "<div class=\"diff extended_header\">\n";
1965                         $in_header = 1;
1966                         next LINE;
1967                 } # start of patch in patchset
1968
1969
1970                 if ($in_header && $patch_line =~ m/^---/) {
1971                         #print "</div>\n"; # class="diff extended_header"
1972                         $in_header = 0;
1973
1974                         my $file = $diffinfo->{'from_file'};
1975                         $file  ||= $diffinfo->{'file'};
1976                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1977                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1978                                         -class => "list"}, esc_html($file));
1979                         $patch_line =~ s|a/.*$|a/$file|g;
1980                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1981
1982                         $patch_line = <$fd>;
1983                         chomp $patch_line;
1984
1985                         #$patch_line =~ m/^+++/;
1986                         $file    = $diffinfo->{'to_file'};
1987                         $file  ||= $diffinfo->{'file'};
1988                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1989                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1990                                         -class => "list"}, esc_html($file));
1991                         $patch_line =~ s|b/.*|b/$file|g;
1992                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1993
1994                         next LINE;
1995                 }
1996                 next LINE if $in_header;
1997
1998                 print format_diff_line($patch_line);
1999         }
2000         print "</div>\n" if $patch_found; # class="patch"
2001
2002         print "</div>\n"; # class="patchset"
2003 }
2004
2005 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2006
2007 sub git_shortlog_body {
2008         # uses global variable $project
2009         my ($revlist, $from, $to, $refs, $extra) = @_;
2010
2011         $from = 0 unless defined $from;
2012         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2013
2014         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2015         my $alternate = 1;
2016         for (my $i = $from; $i <= $to; $i++) {
2017                 my $commit = $revlist->[$i];
2018                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2019                 my $ref = format_ref_marker($refs, $commit);
2020                 my %co = parse_commit($commit);
2021                 if ($alternate) {
2022                         print "<tr class=\"dark\">\n";
2023                 } else {
2024                         print "<tr class=\"light\">\n";
2025                 }
2026                 $alternate ^= 1;
2027                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2028                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2029                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2030                       "<td>";
2031                 print format_subject_html($co{'title'}, $co{'title_short'},
2032                                           href(action=>"commit", hash=>$commit), $ref);
2033                 print "</td>\n" .
2034                       "<td class=\"link\">" .
2035                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2036                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2037                 if (gitweb_have_snapshot()) {
2038                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2039                 }
2040                 print "</td>\n" .
2041                       "</tr>\n";
2042         }
2043         if (defined $extra) {
2044                 print "<tr>\n" .
2045                       "<td colspan=\"4\">$extra</td>\n" .
2046                       "</tr>\n";
2047         }
2048         print "</table>\n";
2049 }
2050
2051 sub git_history_body {
2052         # Warning: assumes constant type (blob or tree) during history
2053         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2054
2055         $from = 0 unless defined $from;
2056         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2057
2058         print "<table class=\"history\" cellspacing=\"0\">\n";
2059         my $alternate = 1;
2060         for (my $i = $from; $i <= $to; $i++) {
2061                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2062                         next;
2063                 }
2064
2065                 my $commit = $1;
2066                 my %co = parse_commit($commit);
2067                 if (!%co) {
2068                         next;
2069                 }
2070
2071                 my $ref = format_ref_marker($refs, $commit);
2072
2073                 if ($alternate) {
2074                         print "<tr class=\"dark\">\n";
2075                 } else {
2076                         print "<tr class=\"light\">\n";
2077                 }
2078                 $alternate ^= 1;
2079                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2080                       # shortlog uses      chop_str($co{'author_name'}, 10)
2081                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2082                       "<td>";
2083                 # originally git_history used chop_str($co{'title'}, 50)
2084                 print format_subject_html($co{'title'}, $co{'title_short'},
2085                                           href(action=>"commit", hash=>$commit), $ref);
2086                 print "</td>\n" .
2087                       "<td class=\"link\">" .
2088                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2089                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2090
2091                 if ($ftype eq 'blob') {
2092                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2093                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2094                         if (defined $blob_current && defined $blob_parent &&
2095                                         $blob_current ne $blob_parent) {
2096                                 print " | " .
2097                                         $cgi->a({-href => href(action=>"blobdiff",
2098                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2099                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2100                                                                file_name=>$file_name)},
2101                                                 "diff to current");
2102                         }
2103                 }
2104                 print "</td>\n" .
2105                       "</tr>\n";
2106         }
2107         if (defined $extra) {
2108                 print "<tr>\n" .
2109                       "<td colspan=\"4\">$extra</td>\n" .
2110                       "</tr>\n";
2111         }
2112         print "</table>\n";
2113 }
2114
2115 sub git_tags_body {
2116         # uses global variable $project
2117         my ($taglist, $from, $to, $extra) = @_;
2118         $from = 0 unless defined $from;
2119         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2120
2121         print "<table class=\"tags\" cellspacing=\"0\">\n";
2122         my $alternate = 1;
2123         for (my $i = $from; $i <= $to; $i++) {
2124                 my $entry = $taglist->[$i];
2125                 my %tag = %$entry;
2126                 my $comment_lines = $tag{'comment'};
2127                 my $comment = shift @$comment_lines;
2128                 my $comment_short;
2129                 if (defined $comment) {
2130                         $comment_short = chop_str($comment, 30, 5);
2131                 }
2132                 if ($alternate) {
2133                         print "<tr class=\"dark\">\n";
2134                 } else {
2135                         print "<tr class=\"light\">\n";
2136                 }
2137                 $alternate ^= 1;
2138                 print "<td><i>$tag{'age'}</i></td>\n" .
2139                       "<td>" .
2140                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2141                                -class => "list name"}, esc_html($tag{'name'})) .
2142                       "</td>\n" .
2143                       "<td>";
2144                 if (defined $comment) {
2145                         print format_subject_html($comment, $comment_short,
2146                                                   href(action=>"tag", hash=>$tag{'id'}));
2147                 }
2148                 print "</td>\n" .
2149                       "<td class=\"selflink\">";
2150                 if ($tag{'type'} eq "tag") {
2151                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2152                 } else {
2153                         print "&nbsp;";
2154                 }
2155                 print "</td>\n" .
2156                       "<td class=\"link\">" . " | " .
2157                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2158                 if ($tag{'reftype'} eq "commit") {
2159                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2160                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2161                 } elsif ($tag{'reftype'} eq "blob") {
2162                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2163                 }
2164                 print "</td>\n" .
2165                       "</tr>";
2166         }
2167         if (defined $extra) {
2168                 print "<tr>\n" .
2169                       "<td colspan=\"5\">$extra</td>\n" .
2170                       "</tr>\n";
2171         }
2172         print "</table>\n";
2173 }
2174
2175 sub git_heads_body {
2176         # uses global variable $project
2177         my ($headlist, $head, $from, $to, $extra) = @_;
2178         $from = 0 unless defined $from;
2179         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2180
2181         print "<table class=\"heads\" cellspacing=\"0\">\n";
2182         my $alternate = 1;
2183         for (my $i = $from; $i <= $to; $i++) {
2184                 my $entry = $headlist->[$i];
2185                 my %tag = %$entry;
2186                 my $curr = $tag{'id'} eq $head;
2187                 if ($alternate) {
2188                         print "<tr class=\"dark\">\n";
2189                 } else {
2190                         print "<tr class=\"light\">\n";
2191                 }
2192                 $alternate ^= 1;
2193                 print "<td><i>$tag{'age'}</i></td>\n" .
2194                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2195                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2196                                -class => "list name"},esc_html($tag{'name'})) .
2197                       "</td>\n" .
2198                       "<td class=\"link\">" .
2199                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2200                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") . " | " .
2201                       $cgi->a({-href => href(action=>"tree", hash=>$tag{'name'}, hash_base=>$tag{'name'})}, "tree") .
2202                       "</td>\n" .
2203                       "</tr>";
2204         }
2205         if (defined $extra) {
2206                 print "<tr>\n" .
2207                       "<td colspan=\"3\">$extra</td>\n" .
2208                       "</tr>\n";
2209         }
2210         print "</table>\n";
2211 }
2212
2213 ## ======================================================================
2214 ## ======================================================================
2215 ## actions
2216
2217 sub git_project_list {
2218         my $order = $cgi->param('o');
2219         if (defined $order && $order !~ m/project|descr|owner|age/) {
2220                 die_error(undef, "Unknown order parameter");
2221         }
2222
2223         my @list = git_get_projects_list();
2224         my @projects;
2225         if (!@list) {
2226                 die_error(undef, "No projects found");
2227         }
2228         foreach my $pr (@list) {
2229                 my $head = git_get_head_hash($pr->{'path'});
2230                 if (!defined $head) {
2231                         next;
2232                 }
2233                 $git_dir = "$projectroot/$pr->{'path'}";
2234                 my %co = parse_commit($head);
2235                 if (!%co) {
2236                         next;
2237                 }
2238                 $pr->{'commit'} = \%co;
2239                 if (!defined $pr->{'descr'}) {
2240                         my $descr = git_get_project_description($pr->{'path'}) || "";
2241                         $pr->{'descr'} = chop_str($descr, 25, 5);
2242                 }
2243                 if (!defined $pr->{'owner'}) {
2244                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2245                 }
2246                 push @projects, $pr;
2247         }
2248
2249         git_header_html();
2250         if (-f $home_text) {
2251                 print "<div class=\"index_include\">\n";
2252                 open (my $fd, $home_text);
2253                 print <$fd>;
2254                 close $fd;
2255                 print "</div>\n";
2256         }
2257         print "<table class=\"project_list\">\n" .
2258               "<tr>\n";
2259         $order ||= "project";
2260         if ($order eq "project") {
2261                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2262                 print "<th>Project</th>\n";
2263         } else {
2264                 print "<th>" .
2265                       $cgi->a({-href => href(project=>undef, order=>'project'),
2266                                -class => "header"}, "Project") .
2267                       "</th>\n";
2268         }
2269         if ($order eq "descr") {
2270                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2271                 print "<th>Description</th>\n";
2272         } else {
2273                 print "<th>" .
2274                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2275                                -class => "header"}, "Description") .
2276                       "</th>\n";
2277         }
2278         if ($order eq "owner") {
2279                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2280                 print "<th>Owner</th>\n";
2281         } else {
2282                 print "<th>" .
2283                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2284                                -class => "header"}, "Owner") .
2285                       "</th>\n";
2286         }
2287         if ($order eq "age") {
2288                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2289                 print "<th>Last Change</th>\n";
2290         } else {
2291                 print "<th>" .
2292                       $cgi->a({-href => href(project=>undef, order=>'age'),
2293                                -class => "header"}, "Last Change") .
2294                       "</th>\n";
2295         }
2296         print "<th></th>\n" .
2297               "</tr>\n";
2298         my $alternate = 1;
2299         foreach my $pr (@projects) {
2300                 if ($alternate) {
2301                         print "<tr class=\"dark\">\n";
2302                 } else {
2303                         print "<tr class=\"light\">\n";
2304                 }
2305                 $alternate ^= 1;
2306                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2307                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2308                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2309                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2310                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2311                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2312                       "<td class=\"link\">" .
2313                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2314                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2315                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2316                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2317                       "</td>\n" .
2318                       "</tr>\n";
2319         }
2320         print "</table>\n";
2321         git_footer_html();
2322 }
2323
2324 sub git_project_index {
2325         my @projects = git_get_projects_list();
2326
2327         print $cgi->header(
2328                 -type => 'text/plain',
2329                 -charset => 'utf-8',
2330                 -content_disposition => 'inline; filename="index.aux"');
2331
2332         foreach my $pr (@projects) {
2333                 if (!exists $pr->{'owner'}) {
2334                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2335                 }
2336
2337                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2338                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2339                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2340                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2341                 $path  =~ s/ /\+/g;
2342                 $owner =~ s/ /\+/g;
2343
2344                 print "$path $owner\n";
2345         }
2346 }
2347
2348 sub git_summary {
2349         my $descr = git_get_project_description($project) || "none";
2350         my $head = git_get_head_hash($project);
2351         my %co = parse_commit($head);
2352         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2353
2354         my $owner = git_get_project_owner($project);
2355
2356         my ($reflist, $refs) = git_get_refs_list();
2357
2358         my @taglist;
2359         my @headlist;
2360         foreach my $ref (@$reflist) {
2361                 if ($ref->{'name'} =~ s!^heads/!!) {
2362                         push @headlist, $ref;
2363                 } else {
2364                         $ref->{'name'} =~ s!^tags/!!;
2365                         push @taglist, $ref;
2366                 }
2367         }
2368
2369         git_header_html();
2370         git_print_page_nav('summary','', $head);
2371
2372         print "<div class=\"title\">&nbsp;</div>\n";
2373         print "<table cellspacing=\"0\">\n" .
2374               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2375               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2376               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2377         # use per project git URL list in $projectroot/$project/cloneurl
2378         # or make project git URL from git base URL and project name
2379         my $url_tag = "URL";
2380         my @url_list = git_get_project_url_list($project);
2381         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2382         foreach my $git_url (@url_list) {
2383                 next unless $git_url;
2384                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2385                 $url_tag = "";
2386         }
2387         print "</table>\n";
2388
2389         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2390                 git_get_head_hash($project)
2391                 or die_error(undef, "Open git-rev-list failed");
2392         my @revlist = map { chomp; $_ } <$fd>;
2393         close $fd;
2394         git_print_header_div('shortlog');
2395         git_shortlog_body(\@revlist, 0, 15, $refs,
2396                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2397
2398         if (@taglist) {
2399                 git_print_header_div('tags');
2400                 git_tags_body(\@taglist, 0, 15,
2401                               $cgi->a({-href => href(action=>"tags")}, "..."));
2402         }
2403
2404         if (@headlist) {
2405                 git_print_header_div('heads');
2406                 git_heads_body(\@headlist, $head, 0, 15,
2407                                $cgi->a({-href => href(action=>"heads")}, "..."));
2408         }
2409
2410         git_footer_html();
2411 }
2412
2413 sub git_tag {
2414         my $head = git_get_head_hash($project);
2415         git_header_html();
2416         git_print_page_nav('','', $head,undef,$head);
2417         my %tag = parse_tag($hash);
2418         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2419         print "<div class=\"title_text\">\n" .
2420               "<table cellspacing=\"0\">\n" .
2421               "<tr>\n" .
2422               "<td>object</td>\n" .
2423               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2424                                $tag{'object'}) . "</td>\n" .
2425               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2426                                               $tag{'type'}) . "</td>\n" .
2427               "</tr>\n";
2428         if (defined($tag{'author'})) {
2429                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2430                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2431                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2432                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2433                         "</td></tr>\n";
2434         }
2435         print "</table>\n\n" .
2436               "</div>\n";
2437         print "<div class=\"page_body\">";
2438         my $comment = $tag{'comment'};
2439         foreach my $line (@$comment) {
2440                 print esc_html($line) . "<br/>\n";
2441         }
2442         print "</div>\n";
2443         git_footer_html();
2444 }
2445
2446 sub git_blame2 {
2447         my $fd;
2448         my $ftype;
2449
2450         my ($have_blame) = gitweb_check_feature('blame');
2451         if (!$have_blame) {
2452                 die_error('403 Permission denied', "Permission denied");
2453         }
2454         die_error('404 Not Found', "File name not defined") if (!$file_name);
2455         $hash_base ||= git_get_head_hash($project);
2456         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2457         my %co = parse_commit($hash_base)
2458                 or die_error(undef, "Reading commit failed");
2459         if (!defined $hash) {
2460                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2461                         or die_error(undef, "Error looking up file");
2462         }
2463         $ftype = git_get_type($hash);
2464         if ($ftype !~ "blob") {
2465                 die_error("400 Bad Request", "Object is not a blob");
2466         }
2467         open ($fd, "-|", git_cmd(), "blame", '-l', '--', $file_name, $hash_base)
2468                 or die_error(undef, "Open git-blame failed");
2469         git_header_html();
2470         my $formats_nav =
2471                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2472                         "blob") .
2473                 " | " .
2474                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2475                         "history") .
2476                 " | " .
2477                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2478                         "HEAD");
2479         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2480         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2481         git_print_page_path($file_name, $ftype, $hash_base);
2482         my @rev_color = (qw(light2 dark2));
2483         my $num_colors = scalar(@rev_color);
2484         my $current_color = 0;
2485         my $last_rev;
2486         print <<HTML;
2487 <div class="page_body">
2488 <table class="blame">
2489 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2490 HTML
2491         while (<$fd>) {
2492                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2493                 my $full_rev = $1;
2494                 my $rev = substr($full_rev, 0, 8);
2495                 my $lineno = $2;
2496                 my $data = $3;
2497
2498                 if (!defined $last_rev) {
2499                         $last_rev = $full_rev;
2500                 } elsif ($last_rev ne $full_rev) {
2501                         $last_rev = $full_rev;
2502                         $current_color = ++$current_color % $num_colors;
2503                 }
2504                 print "<tr class=\"$rev_color[$current_color]\">\n";
2505                 print "<td class=\"sha1\">" .
2506                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2507                                 esc_html($rev)) . "</td>\n";
2508                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2509                       esc_html($lineno) . "</a></td>\n";
2510                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2511                 print "</tr>\n";
2512         }
2513         print "</table>\n";
2514         print "</div>";
2515         close $fd
2516                 or print "Reading blob failed\n";
2517         git_footer_html();
2518 }
2519
2520 sub git_blame {
2521         my $fd;
2522
2523         my ($have_blame) = gitweb_check_feature('blame');
2524         if (!$have_blame) {
2525                 die_error('403 Permission denied', "Permission denied");
2526         }
2527         die_error('404 Not Found', "File name not defined") if (!$file_name);
2528         $hash_base ||= git_get_head_hash($project);
2529         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2530         my %co = parse_commit($hash_base)
2531                 or die_error(undef, "Reading commit failed");
2532         if (!defined $hash) {
2533                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2534                         or die_error(undef, "Error lookup file");
2535         }
2536         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2537                 or die_error(undef, "Open git-annotate failed");
2538         git_header_html();
2539         my $formats_nav =
2540                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2541                         "blob") .
2542                 " | " .
2543                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2544                         "history") .
2545                 " | " .
2546                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2547                         "HEAD");
2548         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2549         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2550         git_print_page_path($file_name, 'blob', $hash_base);
2551         print "<div class=\"page_body\">\n";
2552         print <<HTML;
2553 <table class="blame">
2554   <tr>
2555     <th>Commit</th>
2556     <th>Age</th>
2557     <th>Author</th>
2558     <th>Line</th>
2559     <th>Data</th>
2560   </tr>
2561 HTML
2562         my @line_class = (qw(light dark));
2563         my $line_class_len = scalar (@line_class);
2564         my $line_class_num = $#line_class;
2565         while (my $line = <$fd>) {
2566                 my $long_rev;
2567                 my $short_rev;
2568                 my $author;
2569                 my $time;
2570                 my $lineno;
2571                 my $data;
2572                 my $age;
2573                 my $age_str;
2574                 my $age_class;
2575
2576                 chomp $line;
2577                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2578
2579                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2580                         $long_rev = $1;
2581                         $author   = $2;
2582                         $time     = $3;
2583                         $lineno   = $4;
2584                         $data     = $5;
2585                 } else {
2586                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2587                         next;
2588                 }
2589                 $short_rev  = substr ($long_rev, 0, 8);
2590                 $age        = time () - $time;
2591                 $age_str    = age_string ($age);
2592                 $age_str    =~ s/ /&nbsp;/g;
2593                 $age_class  = age_class($age);
2594                 $author     = esc_html ($author);
2595                 $author     =~ s/ /&nbsp;/g;
2596
2597                 $data = untabify($data);
2598                 $data = esc_html ($data);
2599
2600                 print <<HTML;
2601   <tr class="$line_class[$line_class_num]">
2602     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2603     <td class="$age_class">$age_str</td>
2604     <td>$author</td>
2605     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2606     <td class="pre">$data</td>
2607   </tr>
2608 HTML
2609         } # while (my $line = <$fd>)
2610         print "</table>\n\n";
2611         close $fd
2612                 or print "Reading blob failed.\n";
2613         print "</div>";
2614         git_footer_html();
2615 }
2616
2617 sub git_tags {
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', $project);
2622
2623         my ($taglist) = git_get_refs_list("tags");
2624         if (@$taglist) {
2625                 git_tags_body($taglist);
2626         }
2627         git_footer_html();
2628 }
2629
2630 sub git_heads {
2631         my $head = git_get_head_hash($project);
2632         git_header_html();
2633         git_print_page_nav('','', $head,undef,$head);
2634         git_print_header_div('summary', $project);
2635
2636         my ($headlist) = git_get_refs_list("heads");
2637         if (@$headlist) {
2638                 git_heads_body($headlist, $head);
2639         }
2640         git_footer_html();
2641 }
2642
2643 sub git_blob_plain {
2644         my $expires;
2645
2646         if (!defined $hash) {
2647                 if (defined $file_name) {
2648                         my $base = $hash_base || git_get_head_hash($project);
2649                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2650                                 or die_error(undef, "Error lookup file");
2651                 } else {
2652                         die_error(undef, "No file name defined");
2653                 }
2654         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2655                 # blobs defined by non-textual hash id's can be cached
2656                 $expires = "+1d";
2657         }
2658
2659         my $type = shift;
2660         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2661                 or die_error(undef, "Couldn't cat $file_name, $hash");
2662
2663         $type ||= blob_mimetype($fd, $file_name);
2664
2665         # save as filename, even when no $file_name is given
2666         my $save_as = "$hash";
2667         if (defined $file_name) {
2668                 $save_as = $file_name;
2669         } elsif ($type =~ m/^text\//) {
2670                 $save_as .= '.txt';
2671         }
2672
2673         print $cgi->header(
2674                 -type => "$type",
2675                 -expires=>$expires,
2676                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2677         undef $/;
2678         binmode STDOUT, ':raw';
2679         print <$fd>;
2680         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2681         $/ = "\n";
2682         close $fd;
2683 }
2684
2685 sub git_blob {
2686         my $expires;
2687
2688         if (!defined $hash) {
2689                 if (defined $file_name) {
2690                         my $base = $hash_base || git_get_head_hash($project);
2691                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2692                                 or die_error(undef, "Error lookup file");
2693                 } else {
2694                         die_error(undef, "No file name defined");
2695                 }
2696         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2697                 # blobs defined by non-textual hash id's can be cached
2698                 $expires = "+1d";
2699         }
2700
2701         my ($have_blame) = gitweb_check_feature('blame');
2702         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2703                 or die_error(undef, "Couldn't cat $file_name, $hash");
2704         my $mimetype = blob_mimetype($fd, $file_name);
2705         if ($mimetype !~ m/^text\//) {
2706                 close $fd;
2707                 return git_blob_plain($mimetype);
2708         }
2709         git_header_html(undef, $expires);
2710         my $formats_nav = '';
2711         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2712                 if (defined $file_name) {
2713                         if ($have_blame) {
2714                                 $formats_nav .=
2715                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2716                                                                hash=>$hash, file_name=>$file_name)},
2717                                                 "blame") .
2718                                         " | ";
2719                         }
2720                         $formats_nav .=
2721                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2722                                                        hash=>$hash, file_name=>$file_name)},
2723                                         "history") .
2724                                 " | " .
2725                                 $cgi->a({-href => href(action=>"blob_plain",
2726                                                        hash=>$hash, file_name=>$file_name)},
2727                                         "raw") .
2728                                 " | " .
2729                                 $cgi->a({-href => href(action=>"blob",
2730                                                        hash_base=>"HEAD", file_name=>$file_name)},
2731                                         "HEAD");
2732                 } else {
2733                         $formats_nav .=
2734                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2735                 }
2736                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2737                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2738         } else {
2739                 print "<div class=\"page_nav\">\n" .
2740                       "<br/><br/></div>\n" .
2741                       "<div class=\"title\">$hash</div>\n";
2742         }
2743         git_print_page_path($file_name, "blob", $hash_base);
2744         print "<div class=\"page_body\">\n";
2745         my $nr;
2746         while (my $line = <$fd>) {
2747                 chomp $line;
2748                 $nr++;
2749                 $line = untabify($line);
2750                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2751                        $nr, $nr, $nr, esc_html($line);
2752         }
2753         close $fd
2754                 or print "Reading blob failed.\n";
2755         print "</div>";
2756         git_footer_html();
2757 }
2758
2759 sub git_tree {
2760         my $have_snapshot = gitweb_have_snapshot();
2761
2762         if (!defined $hash_base) {
2763                 $hash_base = "HEAD";
2764         }
2765         if (!defined $hash) {
2766                 if (defined $file_name) {
2767                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
2768                 } else {
2769                         $hash = $hash_base;
2770                 }
2771         }
2772         $/ = "\0";
2773         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2774                 or die_error(undef, "Open git-ls-tree failed");
2775         my @entries = map { chomp; $_ } <$fd>;
2776         close $fd or die_error(undef, "Reading tree failed");
2777         $/ = "\n";
2778
2779         my $refs = git_get_references();
2780         my $ref = format_ref_marker($refs, $hash_base);
2781         git_header_html();
2782         my $base = "";
2783         my ($have_blame) = gitweb_check_feature('blame');
2784         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2785                 my @views_nav = ();
2786                 if (defined $file_name) {
2787                         push @views_nav,
2788                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2789                                                        hash=>$hash, file_name=>$file_name)},
2790                                         "history"),
2791                                 $cgi->a({-href => href(action=>"tree",
2792                                                        hash_base=>"HEAD", file_name=>$file_name)},
2793                                         "HEAD"),
2794                 }
2795                 if ($have_snapshot) {
2796                         # FIXME: Should be available when we have no hash base as well.
2797                         push @views_nav,
2798                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
2799                                         "snapshot");
2800                 }
2801                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
2802                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2803         } else {
2804                 undef $hash_base;
2805                 print "<div class=\"page_nav\">\n";
2806                 print "<br/><br/></div>\n";
2807                 print "<div class=\"title\">$hash</div>\n";
2808         }
2809         if (defined $file_name) {
2810                 $base = esc_html("$file_name/");
2811         }
2812         git_print_page_path($file_name, 'tree', $hash_base);
2813         print "<div class=\"page_body\">\n";
2814         print "<table cellspacing=\"0\">\n";
2815         my $alternate = 1;
2816         foreach my $line (@entries) {
2817                 my %t = parse_ls_tree_line($line, -z => 1);
2818
2819                 if ($alternate) {
2820                         print "<tr class=\"dark\">\n";
2821                 } else {
2822                         print "<tr class=\"light\">\n";
2823                 }
2824                 $alternate ^= 1;
2825
2826                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2827
2828                 print "</tr>\n";
2829         }
2830         print "</table>\n" .
2831               "</div>";
2832         git_footer_html();
2833 }
2834
2835 sub git_snapshot {
2836         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2837         my $have_snapshot = (defined $ctype && defined $suffix);
2838         if (!$have_snapshot) {
2839                 die_error('403 Permission denied', "Permission denied");
2840         }
2841
2842         if (!defined $hash) {
2843                 $hash = git_get_head_hash($project);
2844         }
2845
2846         my $filename = basename($project) . "-$hash.tar.$suffix";
2847
2848         print $cgi->header(
2849                 -type => 'application/x-tar',
2850                 -content_encoding => $ctype,
2851                 -content_disposition => 'inline; filename="' . "$filename" . '"',
2852                 -status => '200 OK');
2853
2854         my $git = git_cmd_str();
2855         my $name = $project;
2856         $name =~ s/\047/\047\\\047\047/g;
2857         open my $fd, "-|",
2858         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
2859                 or die_error(undef, "Execute git-tar-tree failed.");
2860         binmode STDOUT, ':raw';
2861         print <$fd>;
2862         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2863         close $fd;
2864
2865 }
2866
2867 sub git_log {
2868         my $head = git_get_head_hash($project);
2869         if (!defined $hash) {
2870                 $hash = $head;
2871         }
2872         if (!defined $page) {
2873                 $page = 0;
2874         }
2875         my $refs = git_get_references();
2876
2877         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2878         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2879                 or die_error(undef, "Open git-rev-list failed");
2880         my @revlist = map { chomp; $_ } <$fd>;
2881         close $fd;
2882
2883         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2884
2885         git_header_html();
2886         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2887
2888         if (!@revlist) {
2889                 my %co = parse_commit($hash);
2890
2891                 git_print_header_div('summary', $project);
2892                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2893         }
2894         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2895                 my $commit = $revlist[$i];
2896                 my $ref = format_ref_marker($refs, $commit);
2897                 my %co = parse_commit($commit);
2898                 next if !%co;
2899                 my %ad = parse_date($co{'author_epoch'});
2900                 git_print_header_div('commit',
2901                                "<span class=\"age\">$co{'age_string'}</span>" .
2902                                esc_html($co{'title'}) . $ref,
2903                                $commit);
2904                 print "<div class=\"title_text\">\n" .
2905                       "<div class=\"log_link\">\n" .
2906                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2907                       " | " .
2908                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2909                       " | " .
2910                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
2911                       "<br/>\n" .
2912                       "</div>\n" .
2913                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2914                       "</div>\n";
2915
2916                 print "<div class=\"log_body\">\n";
2917                 git_print_simplified_log($co{'comment'});
2918                 print "</div>\n";
2919         }
2920         git_footer_html();
2921 }
2922
2923 sub git_commit {
2924         my %co = parse_commit($hash);
2925         if (!%co) {
2926                 die_error(undef, "Unknown commit object");
2927         }
2928         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2929         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2930
2931         my $parent = $co{'parent'};
2932         if (!defined $parent) {
2933                 $parent = "--root";
2934         }
2935         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2936                 or die_error(undef, "Open git-diff-tree failed");
2937         my @difftree = map { chomp; $_ } <$fd>;
2938         close $fd or die_error(undef, "Reading git-diff-tree failed");
2939
2940         # non-textual hash id's can be cached
2941         my $expires;
2942         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2943                 $expires = "+1d";
2944         }
2945         my $refs = git_get_references();
2946         my $ref = format_ref_marker($refs, $co{'id'});
2947
2948         my $have_snapshot = gitweb_have_snapshot();
2949
2950         my @views_nav = ();
2951         if (defined $file_name && defined $co{'parent'}) {
2952                 push @views_nav,
2953                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2954                                 "blame");
2955         }
2956         git_header_html(undef, $expires);
2957         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2958                            $hash, $co{'tree'}, $hash,
2959                            join (' | ', @views_nav));
2960
2961         if (defined $co{'parent'}) {
2962                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2963         } else {
2964                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2965         }
2966         print "<div class=\"title_text\">\n" .
2967               "<table cellspacing=\"0\">\n";
2968         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2969               "<tr>" .
2970               "<td></td><td> $ad{'rfc2822'}";
2971         if ($ad{'hour_local'} < 6) {
2972                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2973                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2974         } else {
2975                 printf(" (%02d:%02d %s)",
2976                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2977         }
2978         print "</td>" .
2979               "</tr>\n";
2980         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2981         print "<tr><td></td><td> $cd{'rfc2822'}" .
2982               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2983               "</td></tr>\n";
2984         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2985         print "<tr>" .
2986               "<td>tree</td>" .
2987               "<td class=\"sha1\">" .
2988               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2989                        class => "list"}, $co{'tree'}) .
2990               "</td>" .
2991               "<td class=\"link\">" .
2992               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2993                       "tree");
2994         if ($have_snapshot) {
2995                 print " | " .
2996                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2997         }
2998         print "</td>" .
2999               "</tr>\n";
3000         my $parents = $co{'parents'};
3001         foreach my $par (@$parents) {
3002                 print "<tr>" .
3003                       "<td>parent</td>" .
3004                       "<td class=\"sha1\">" .
3005                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3006                                class => "list"}, $par) .
3007                       "</td>" .
3008                       "<td class=\"link\">" .
3009                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3010                       " | " .
3011                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3012                       "</td>" .
3013                       "</tr>\n";
3014         }
3015         print "</table>".
3016               "</div>\n";
3017
3018         print "<div class=\"page_body\">\n";
3019         git_print_log($co{'comment'});
3020         print "</div>\n";
3021
3022         git_difftree_body(\@difftree, $hash, $parent);
3023
3024         git_footer_html();
3025 }
3026
3027 sub git_blobdiff {
3028         my $format = shift || 'html';
3029
3030         my $fd;
3031         my @difftree;
3032         my %diffinfo;
3033         my $expires;
3034
3035         # preparing $fd and %diffinfo for git_patchset_body
3036         # new style URI
3037         if (defined $hash_base && defined $hash_parent_base) {
3038                 if (defined $file_name) {
3039                         # read raw output
3040                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
3041                                 "--", $file_name
3042                                 or die_error(undef, "Open git-diff-tree failed");
3043                         @difftree = map { chomp; $_ } <$fd>;
3044                         close $fd
3045                                 or die_error(undef, "Reading git-diff-tree failed");
3046                         @difftree
3047                                 or die_error('404 Not Found', "Blob diff not found");
3048
3049                 } elsif (defined $hash &&
3050                          $hash =~ /[0-9a-fA-F]{40}/) {
3051                         # try to find filename from $hash
3052
3053                         # read filtered raw output
3054                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
3055                                 or die_error(undef, "Open git-diff-tree failed");
3056                         @difftree =
3057                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3058                                 # $hash == to_id
3059                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3060                                 map { chomp; $_ } <$fd>;
3061                         close $fd
3062                                 or die_error(undef, "Reading git-diff-tree failed");
3063                         @difftree
3064                                 or die_error('404 Not Found', "Blob diff not found");
3065
3066                 } else {
3067                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3068                 }
3069
3070                 if (@difftree > 1) {
3071                         die_error('404 Not Found', "Ambiguous blob diff specification");
3072                 }
3073
3074                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3075                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3076                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3077
3078                 $hash_parent ||= $diffinfo{'from_id'};
3079                 $hash        ||= $diffinfo{'to_id'};
3080
3081                 # non-textual hash id's can be cached
3082                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3083                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3084                         $expires = '+1d';
3085                 }
3086
3087                 # open patch output
3088                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3089                         '-p', $hash_parent_base, $hash_base,
3090                         "--", $file_name
3091                         or die_error(undef, "Open git-diff-tree failed");
3092         }
3093
3094         # old/legacy style URI
3095         if (!%diffinfo && # if new style URI failed
3096             defined $hash && defined $hash_parent) {
3097                 # fake git-diff-tree raw output
3098                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3099                 $diffinfo{'from_id'} = $hash_parent;
3100                 $diffinfo{'to_id'}   = $hash;
3101                 if (defined $file_name) {
3102                         if (defined $file_parent) {
3103                                 $diffinfo{'status'} = '2';
3104                                 $diffinfo{'from_file'} = $file_parent;
3105                                 $diffinfo{'to_file'}   = $file_name;
3106                         } else { # assume not renamed
3107                                 $diffinfo{'status'} = '1';
3108                                 $diffinfo{'from_file'} = $file_name;
3109                                 $diffinfo{'to_file'}   = $file_name;
3110                         }
3111                 } else { # no filename given
3112                         $diffinfo{'status'} = '2';
3113                         $diffinfo{'from_file'} = $hash_parent;
3114                         $diffinfo{'to_file'}   = $hash;
3115                 }
3116
3117                 # non-textual hash id's can be cached
3118                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3119                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3120                         $expires = '+1d';
3121                 }
3122
3123                 # open patch output
3124                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3125                         or die_error(undef, "Open git-diff failed");
3126         } else  {
3127                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3128                         unless %diffinfo;
3129         }
3130
3131         # header
3132         if ($format eq 'html') {
3133                 my $formats_nav =
3134                         $cgi->a({-href => href(action=>"blobdiff_plain",
3135                                                hash=>$hash, hash_parent=>$hash_parent,
3136                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3137                                                file_name=>$file_name, file_parent=>$file_parent)},
3138                                 "raw");
3139                 git_header_html(undef, $expires);
3140                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3141                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3142                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3143                 } else {
3144                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3145                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3146                 }
3147                 if (defined $file_name) {
3148                         git_print_page_path($file_name, "blob", $hash_base);
3149                 } else {
3150                         print "<div class=\"page_path\"></div>\n";
3151                 }
3152
3153         } elsif ($format eq 'plain') {
3154                 print $cgi->header(
3155                         -type => 'text/plain',
3156                         -charset => 'utf-8',
3157                         -expires => $expires,
3158                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3159
3160                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3161
3162         } else {
3163                 die_error(undef, "Unknown blobdiff format");
3164         }
3165
3166         # patch
3167         if ($format eq 'html') {
3168                 print "<div class=\"page_body\">\n";
3169
3170                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3171                 close $fd;
3172
3173                 print "</div>\n"; # class="page_body"
3174                 git_footer_html();
3175
3176         } else {
3177                 while (my $line = <$fd>) {
3178                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3179                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3180
3181                         print $line;
3182
3183                         last if $line =~ m!^\+\+\+!;
3184                 }
3185                 local $/ = undef;
3186                 print <$fd>;
3187                 close $fd;
3188         }
3189 }
3190
3191 sub git_blobdiff_plain {
3192         git_blobdiff('plain');
3193 }
3194
3195 sub git_commitdiff {
3196         my $format = shift || 'html';
3197         my %co = parse_commit($hash);
3198         if (!%co) {
3199                 die_error(undef, "Unknown commit object");
3200         }
3201         if (!defined $hash_parent) {
3202                 $hash_parent = $co{'parent'} || '--root';
3203         }
3204
3205         # read commitdiff
3206         my $fd;
3207         my @difftree;
3208         if ($format eq 'html') {
3209                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3210                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3211                         or die_error(undef, "Open git-diff-tree failed");
3212
3213                 while (chomp(my $line = <$fd>)) {
3214                         # empty line ends raw part of diff-tree output
3215                         last unless $line;
3216                         push @difftree, $line;
3217                 }
3218
3219         } elsif ($format eq 'plain') {
3220                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3221                         '-p', $hash_parent, $hash
3222                         or die_error(undef, "Open git-diff-tree failed");
3223
3224         } else {
3225                 die_error(undef, "Unknown commitdiff format");
3226         }
3227
3228         # non-textual hash id's can be cached
3229         my $expires;
3230         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3231                 $expires = "+1d";
3232         }
3233
3234         # write commit message
3235         if ($format eq 'html') {
3236                 my $refs = git_get_references();
3237                 my $ref = format_ref_marker($refs, $co{'id'});
3238                 my $formats_nav =
3239                         $cgi->a({-href => href(action=>"commitdiff_plain",
3240                                                hash=>$hash, hash_parent=>$hash_parent)},
3241                                 "raw");
3242
3243                 git_header_html(undef, $expires);
3244                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3245                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3246                 git_print_authorship(\%co);
3247                 print "<div class=\"page_body\">\n";
3248                 print "<div class=\"log\">\n";
3249                 git_print_simplified_log($co{'comment'}, 1); # skip title
3250                 print "</div>\n"; # class="log"
3251
3252         } elsif ($format eq 'plain') {
3253                 my $refs = git_get_references("tags");
3254                 my $tagname = git_get_rev_name_tags($hash);
3255                 my $filename = basename($project) . "-$hash.patch";
3256
3257                 print $cgi->header(
3258                         -type => 'text/plain',
3259                         -charset => 'utf-8',
3260                         -expires => $expires,
3261                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3262                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3263                 print <<TEXT;
3264 From: $co{'author'}
3265 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3266 Subject: $co{'title'}
3267 TEXT
3268                 print "X-Git-Tag: $tagname\n" if $tagname;
3269                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3270
3271                 foreach my $line (@{$co{'comment'}}) {
3272                         print "$line\n";
3273                 }
3274                 print "---\n\n";
3275         }
3276
3277         # write patch
3278         if ($format eq 'html') {
3279                 git_difftree_body(\@difftree, $hash, $hash_parent);
3280                 print "<br/>\n";
3281
3282                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3283                 close $fd;
3284                 print "</div>\n"; # class="page_body"
3285                 git_footer_html();
3286
3287         } elsif ($format eq 'plain') {
3288                 local $/ = undef;
3289                 print <$fd>;
3290                 close $fd
3291                         or print "Reading git-diff-tree failed\n";
3292         }
3293 }
3294
3295 sub git_commitdiff_plain {
3296         git_commitdiff('plain');
3297 }
3298
3299 sub git_history {
3300         if (!defined $hash_base) {
3301                 $hash_base = git_get_head_hash($project);
3302         }
3303         if (!defined $page) {
3304                 $page = 0;
3305         }
3306         my $ftype;
3307         my %co = parse_commit($hash_base);
3308         if (!%co) {
3309                 die_error(undef, "Unknown commit object");
3310         }
3311
3312         my $refs = git_get_references();
3313         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3314
3315         if (!defined $hash && defined $file_name) {
3316                 $hash = git_get_hash_by_path($hash_base, $file_name);
3317         }
3318         if (defined $hash) {
3319                 $ftype = git_get_type($hash);
3320         }
3321
3322         open my $fd, "-|",
3323                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3324                         or die_error(undef, "Open git-rev-list-failed");
3325         my @revlist = map { chomp; $_ } <$fd>;
3326         close $fd
3327                 or die_error(undef, "Reading git-rev-list failed");
3328
3329         my $paging_nav = '';
3330         if ($page > 0) {
3331                 $paging_nav .=
3332                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3333                                                file_name=>$file_name)},
3334                                 "first");
3335                 $paging_nav .= " &sdot; " .
3336                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3337                                                file_name=>$file_name, page=>$page-1),
3338                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3339         } else {
3340                 $paging_nav .= "first";
3341                 $paging_nav .= " &sdot; prev";
3342         }
3343         if ($#revlist >= (100 * ($page+1)-1)) {
3344                 $paging_nav .= " &sdot; " .
3345                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3346                                                file_name=>$file_name, page=>$page+1),
3347                                  -accesskey => "n", -title => "Alt-n"}, "next");
3348         } else {
3349                 $paging_nav .= " &sdot; next";
3350         }
3351         my $next_link = '';
3352         if ($#revlist >= (100 * ($page+1)-1)) {
3353                 $next_link =
3354                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3355                                                file_name=>$file_name, page=>$page+1),
3356                                  -title => "Alt-n"}, "next");
3357         }
3358
3359         git_header_html();
3360         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3361         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3362         git_print_page_path($file_name, $ftype, $hash_base);
3363
3364         git_history_body(\@revlist, ($page * 100), $#revlist,
3365                          $refs, $hash_base, $ftype, $next_link);
3366
3367         git_footer_html();
3368 }
3369
3370 sub git_search {
3371         if (!defined $searchtext) {
3372                 die_error(undef, "Text field empty");
3373         }
3374         if (!defined $hash) {
3375                 $hash = git_get_head_hash($project);
3376         }
3377         my %co = parse_commit($hash);
3378         if (!%co) {
3379                 die_error(undef, "Unknown commit object");
3380         }
3381
3382         my $commit_search = 1;
3383         my $author_search = 0;
3384         my $committer_search = 0;
3385         my $pickaxe_search = 0;
3386         if ($searchtext =~ s/^author\\://i) {
3387                 $author_search = 1;
3388         } elsif ($searchtext =~ s/^committer\\://i) {
3389                 $committer_search = 1;
3390         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3391                 $commit_search = 0;
3392                 $pickaxe_search = 1;
3393
3394                 # pickaxe may take all resources of your box and run for several minutes
3395                 # with every query - so decide by yourself how public you make this feature
3396                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3397                 if (!$have_pickaxe) {
3398                         die_error('403 Permission denied', "Permission denied");
3399                 }
3400         }
3401         git_header_html();
3402         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3403         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3404
3405         print "<table cellspacing=\"0\">\n";
3406         my $alternate = 1;
3407         if ($commit_search) {
3408                 $/ = "\0";
3409                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3410                 while (my $commit_text = <$fd>) {
3411                         if (!grep m/$searchtext/i, $commit_text) {
3412                                 next;
3413                         }
3414                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3415                                 next;
3416                         }
3417                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3418                                 next;
3419                         }
3420                         my @commit_lines = split "\n", $commit_text;
3421                         my %co = parse_commit(undef, \@commit_lines);
3422                         if (!%co) {
3423                                 next;
3424                         }
3425                         if ($alternate) {
3426                                 print "<tr class=\"dark\">\n";
3427                         } else {
3428                                 print "<tr class=\"light\">\n";
3429                         }
3430                         $alternate ^= 1;
3431                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3432                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3433                               "<td>" .
3434                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3435                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3436                         my $comment = $co{'comment'};
3437                         foreach my $line (@$comment) {
3438                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3439                                         my $lead = esc_html($1) || "";
3440                                         $lead = chop_str($lead, 30, 10);
3441                                         my $match = esc_html($2) || "";
3442                                         my $trail = esc_html($3) || "";
3443                                         $trail = chop_str($trail, 30, 10);
3444                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3445                                         print chop_str($text, 80, 5) . "<br/>\n";
3446                                 }
3447                         }
3448                         print "</td>\n" .
3449                               "<td class=\"link\">" .
3450                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3451                               " | " .
3452                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3453                         print "</td>\n" .
3454                               "</tr>\n";
3455                 }
3456                 close $fd;
3457         }
3458
3459         if ($pickaxe_search) {
3460                 $/ = "\n";
3461                 my $git_command = git_cmd_str();
3462                 open my $fd, "-|", "$git_command rev-list $hash | " .
3463                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3464                 undef %co;
3465                 my @files;
3466                 while (my $line = <$fd>) {
3467                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3468                                 my %set;
3469                                 $set{'file'} = $6;
3470                                 $set{'from_id'} = $3;
3471                                 $set{'to_id'} = $4;
3472                                 $set{'id'} = $set{'to_id'};
3473                                 if ($set{'id'} =~ m/0{40}/) {
3474                                         $set{'id'} = $set{'from_id'};
3475                                 }
3476                                 if ($set{'id'} =~ m/0{40}/) {
3477                                         next;
3478                                 }
3479                                 push @files, \%set;
3480                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3481                                 if (%co) {
3482                                         if ($alternate) {
3483                                                 print "<tr class=\"dark\">\n";
3484                                         } else {
3485                                                 print "<tr class=\"light\">\n";
3486                                         }
3487                                         $alternate ^= 1;
3488                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3489                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3490                                               "<td>" .
3491                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3492                                                       -class => "list subject"},
3493                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3494                                         while (my $setref = shift @files) {
3495                                                 my %set = %$setref;
3496                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3497                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3498                                                               -class => "list"},
3499                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3500                                                       "<br/>\n";
3501                                         }
3502                                         print "</td>\n" .
3503                                               "<td class=\"link\">" .
3504                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3505                                               " | " .
3506                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3507                                         print "</td>\n" .
3508                                               "</tr>\n";
3509                                 }
3510                                 %co = parse_commit($1);
3511                         }
3512                 }
3513                 close $fd;
3514         }
3515         print "</table>\n";
3516         git_footer_html();
3517 }
3518
3519 sub git_shortlog {
3520         my $head = git_get_head_hash($project);
3521         if (!defined $hash) {
3522                 $hash = $head;
3523         }
3524         if (!defined $page) {
3525                 $page = 0;
3526         }
3527         my $refs = git_get_references();
3528
3529         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3530         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3531                 or die_error(undef, "Open git-rev-list failed");
3532         my @revlist = map { chomp; $_ } <$fd>;
3533         close $fd;
3534
3535         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3536         my $next_link = '';
3537         if ($#revlist >= (100 * ($page+1)-1)) {
3538                 $next_link =
3539                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3540                                  -title => "Alt-n"}, "next");
3541         }
3542
3543
3544         git_header_html();
3545         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3546         git_print_header_div('summary', $project);
3547
3548         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3549
3550         git_footer_html();
3551 }
3552
3553 ## ......................................................................
3554 ## feeds (RSS, OPML)
3555
3556 sub git_rss {
3557         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3558         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3559                 or die_error(undef, "Open git-rev-list failed");
3560         my @revlist = map { chomp; $_ } <$fd>;
3561         close $fd or die_error(undef, "Reading git-rev-list failed");
3562         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3563         print <<XML;
3564 <?xml version="1.0" encoding="utf-8"?>
3565 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3566 <channel>
3567 <title>$project $my_uri $my_url</title>
3568 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3569 <description>$project log</description>
3570 <language>en</language>
3571 XML
3572
3573         for (my $i = 0; $i <= $#revlist; $i++) {
3574                 my $commit = $revlist[$i];
3575                 my %co = parse_commit($commit);
3576                 # we read 150, we always show 30 and the ones more recent than 48 hours
3577                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3578                         last;
3579                 }
3580                 my %cd = parse_date($co{'committer_epoch'});
3581                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3582                         $co{'parent'}, $co{'id'}
3583                         or next;
3584                 my @difftree = map { chomp; $_ } <$fd>;
3585                 close $fd
3586                         or next;
3587                 print "<item>\n" .
3588                       "<title>" .
3589                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3590                       "</title>\n" .
3591                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3592                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3593                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3594                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3595                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3596                       "<content:encoded>" .
3597                       "<![CDATA[\n";
3598                 my $comment = $co{'comment'};
3599                 foreach my $line (@$comment) {
3600                         $line = to_utf8($line);
3601                         print "$line<br/>\n";
3602                 }
3603                 print "<br/>\n";
3604                 foreach my $line (@difftree) {
3605                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3606                                 next;
3607                         }
3608                         my $file = esc_html(unquote($7));
3609                         $file = to_utf8($file);
3610                         print "$file<br/>\n";
3611                 }
3612                 print "]]>\n" .
3613                       "</content:encoded>\n" .
3614                       "</item>\n";
3615         }
3616         print "</channel></rss>";
3617 }
3618
3619 sub git_opml {
3620         my @list = git_get_projects_list();
3621
3622         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3623         print <<XML;
3624 <?xml version="1.0" encoding="utf-8"?>
3625 <opml version="1.0">
3626 <head>
3627   <title>$site_name Git OPML Export</title>
3628 </head>
3629 <body>
3630 <outline text="git RSS feeds">
3631 XML
3632
3633         foreach my $pr (@list) {
3634                 my %proj = %$pr;
3635                 my $head = git_get_head_hash($proj{'path'});
3636                 if (!defined $head) {
3637                         next;
3638                 }
3639                 $git_dir = "$projectroot/$proj{'path'}";
3640                 my %co = parse_commit($head);
3641                 if (!%co) {
3642                         next;
3643                 }
3644
3645                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3646                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3647                 my $html = "$my_url?p=$proj{'path'};a=summary";
3648                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3649         }
3650         print <<XML;
3651 </outline>
3652 </body>
3653 </opml>
3654 XML
3655 }