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         if ($co{'title'} eq "") {
1075                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1076         }
1077         # remove added spaces
1078         foreach my $line (@commit_lines) {
1079                 $line =~ s/^    //;
1080         }
1081         $co{'comment'} = \@commit_lines;
1082
1083         my $age = time - $co{'committer_epoch'};
1084         $co{'age'} = $age;
1085         $co{'age_string'} = age_string($age);
1086         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1087         if ($age > 60*60*24*7*2) {
1088                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1089                 $co{'age_string_age'} = $co{'age_string'};
1090         } else {
1091                 $co{'age_string_date'} = $co{'age_string'};
1092                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1093         }
1094         return %co;
1095 }
1096
1097 # parse ref from ref_file, given by ref_id, with given type
1098 sub parse_ref {
1099         my $ref_file = shift;
1100         my $ref_id = shift;
1101         my $type = shift || git_get_type($ref_id);
1102         my %ref_item;
1103
1104         $ref_item{'type'} = $type;
1105         $ref_item{'id'} = $ref_id;
1106         $ref_item{'epoch'} = 0;
1107         $ref_item{'age'} = "unknown";
1108         if ($type eq "tag") {
1109                 my %tag = parse_tag($ref_id);
1110                 $ref_item{'comment'} = $tag{'comment'};
1111                 if ($tag{'type'} eq "commit") {
1112                         my %co = parse_commit($tag{'object'});
1113                         $ref_item{'epoch'} = $co{'committer_epoch'};
1114                         $ref_item{'age'} = $co{'age_string'};
1115                 } elsif (defined($tag{'epoch'})) {
1116                         my $age = time - $tag{'epoch'};
1117                         $ref_item{'epoch'} = $tag{'epoch'};
1118                         $ref_item{'age'} = age_string($age);
1119                 }
1120                 $ref_item{'reftype'} = $tag{'type'};
1121                 $ref_item{'name'} = $tag{'name'};
1122                 $ref_item{'refid'} = $tag{'object'};
1123         } elsif ($type eq "commit"){
1124                 my %co = parse_commit($ref_id);
1125                 $ref_item{'reftype'} = "commit";
1126                 $ref_item{'name'} = $ref_file;
1127                 $ref_item{'title'} = $co{'title'};
1128                 $ref_item{'refid'} = $ref_id;
1129                 $ref_item{'epoch'} = $co{'committer_epoch'};
1130                 $ref_item{'age'} = $co{'age_string'};
1131         } else {
1132                 $ref_item{'reftype'} = $type;
1133                 $ref_item{'name'} = $ref_file;
1134                 $ref_item{'refid'} = $ref_id;
1135         }
1136
1137         return %ref_item;
1138 }
1139
1140 # parse line of git-diff-tree "raw" output
1141 sub parse_difftree_raw_line {
1142         my $line = shift;
1143         my %res;
1144
1145         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1146         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1147         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1148                 $res{'from_mode'} = $1;
1149                 $res{'to_mode'} = $2;
1150                 $res{'from_id'} = $3;
1151                 $res{'to_id'} = $4;
1152                 $res{'status'} = $5;
1153                 $res{'similarity'} = $6;
1154                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1155                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1156                 } else {
1157                         $res{'file'} = unquote($7);
1158                 }
1159         }
1160         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1161         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1162                 $res{'commit'} = $1;
1163         }
1164
1165         return wantarray ? %res : \%res;
1166 }
1167
1168 # parse line of git-ls-tree output
1169 sub parse_ls_tree_line ($;%) {
1170         my $line = shift;
1171         my %opts = @_;
1172         my %res;
1173
1174         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1175         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1176
1177         $res{'mode'} = $1;
1178         $res{'type'} = $2;
1179         $res{'hash'} = $3;
1180         if ($opts{'-z'}) {
1181                 $res{'name'} = $4;
1182         } else {
1183                 $res{'name'} = unquote($4);
1184         }
1185
1186         return wantarray ? %res : \%res;
1187 }
1188
1189 ## ......................................................................
1190 ## parse to array of hashes functions
1191
1192 sub git_get_refs_list {
1193         my $type = shift || "";
1194         my %refs;
1195         my @reflist;
1196
1197         my @refs;
1198         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1199                 or return;
1200         while (my $line = <$fd>) {
1201                 chomp $line;
1202                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?([^\^]+))(\^\{\})?$/) {
1203                         if (defined $refs{$1}) {
1204                                 push @{$refs{$1}}, $2;
1205                         } else {
1206                                 $refs{$1} = [ $2 ];
1207                         }
1208
1209                         if (! $4) { # unpeeled, direct reference
1210                                 push @refs, { hash => $1, name => $3 }; # without type
1211                         } elsif ($3 eq $refs[-1]{'name'}) {
1212                                 # most likely a tag is followed by its peeled
1213                                 # (deref) one, and when that happens we know the
1214                                 # previous one was of type 'tag'.
1215                                 $refs[-1]{'type'} = "tag";
1216                         }
1217                 }
1218         }
1219         close $fd;
1220
1221         foreach my $ref (@refs) {
1222                 my $ref_file = $ref->{'name'};
1223                 my $ref_id   = $ref->{'hash'};
1224
1225                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1226                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1227
1228                 push @reflist, \%ref_item;
1229         }
1230         # sort refs by age
1231         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1232         return (\@reflist, \%refs);
1233 }
1234
1235 ## ----------------------------------------------------------------------
1236 ## filesystem-related functions
1237
1238 sub get_file_owner {
1239         my $path = shift;
1240
1241         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1242         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1243         if (!defined $gcos) {
1244                 return undef;
1245         }
1246         my $owner = $gcos;
1247         $owner =~ s/[,;].*$//;
1248         return to_utf8($owner);
1249 }
1250
1251 ## ......................................................................
1252 ## mimetype related functions
1253
1254 sub mimetype_guess_file {
1255         my $filename = shift;
1256         my $mimemap = shift;
1257         -r $mimemap or return undef;
1258
1259         my %mimemap;
1260         open(MIME, $mimemap) or return undef;
1261         while (<MIME>) {
1262                 next if m/^#/; # skip comments
1263                 my ($mime, $exts) = split(/\t+/);
1264                 if (defined $exts) {
1265                         my @exts = split(/\s+/, $exts);
1266                         foreach my $ext (@exts) {
1267                                 $mimemap{$ext} = $mime;
1268                         }
1269                 }
1270         }
1271         close(MIME);
1272
1273         $filename =~ /\.([^.]*)$/;
1274         return $mimemap{$1};
1275 }
1276
1277 sub mimetype_guess {
1278         my $filename = shift;
1279         my $mime;
1280         $filename =~ /\./ or return undef;
1281
1282         if ($mimetypes_file) {
1283                 my $file = $mimetypes_file;
1284                 if ($file !~ m!^/!) { # if it is relative path
1285                         # it is relative to project
1286                         $file = "$projectroot/$project/$file";
1287                 }
1288                 $mime = mimetype_guess_file($filename, $file);
1289         }
1290         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1291         return $mime;
1292 }
1293
1294 sub blob_mimetype {
1295         my $fd = shift;
1296         my $filename = shift;
1297
1298         if ($filename) {
1299                 my $mime = mimetype_guess($filename);
1300                 $mime and return $mime;
1301         }
1302
1303         # just in case
1304         return $default_blob_plain_mimetype unless $fd;
1305
1306         if (-T $fd) {
1307                 return 'text/plain' .
1308                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1309         } elsif (! $filename) {
1310                 return 'application/octet-stream';
1311         } elsif ($filename =~ m/\.png$/i) {
1312                 return 'image/png';
1313         } elsif ($filename =~ m/\.gif$/i) {
1314                 return 'image/gif';
1315         } elsif ($filename =~ m/\.jpe?g$/i) {
1316                 return 'image/jpeg';
1317         } else {
1318                 return 'application/octet-stream';
1319         }
1320 }
1321
1322 ## ======================================================================
1323 ## functions printing HTML: header, footer, error page
1324
1325 sub git_header_html {
1326         my $status = shift || "200 OK";
1327         my $expires = shift;
1328
1329         my $title = "$site_name git";
1330         if (defined $project) {
1331                 $title .= " - $project";
1332                 if (defined $action) {
1333                         $title .= "/$action";
1334                         if (defined $file_name) {
1335                                 $title .= " - " . esc_html($file_name);
1336                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1337                                         $title .= "/";
1338                                 }
1339                         }
1340                 }
1341         }
1342         my $content_type;
1343         # require explicit support from the UA if we are to send the page as
1344         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1345         # we have to do this because MSIE sometimes globs '*/*', pretending to
1346         # support xhtml+xml but choking when it gets what it asked for.
1347         if (defined $cgi->http('HTTP_ACCEPT') &&
1348             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1349             $cgi->Accept('application/xhtml+xml') != 0) {
1350                 $content_type = 'application/xhtml+xml';
1351         } else {
1352                 $content_type = 'text/html';
1353         }
1354         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1355                            -status=> $status, -expires => $expires);
1356         print <<EOF;
1357 <?xml version="1.0" encoding="utf-8"?>
1358 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1359 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1360 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1361 <!-- git core binaries version $git_version -->
1362 <head>
1363 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1364 <meta name="generator" content="gitweb/$version git/$git_version"/>
1365 <meta name="robots" content="index, nofollow"/>
1366 <title>$title</title>
1367 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1368 EOF
1369         if (defined $project) {
1370                 printf('<link rel="alternate" title="%s log" '.
1371                        'href="%s" type="application/rss+xml"/>'."\n",
1372                        esc_param($project), href(action=>"rss"));
1373         } else {
1374                 printf('<link rel="alternate" title="%s projects list" '.
1375                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1376                        $site_name, href(project=>undef, action=>"project_index"));
1377                 printf('<link rel="alternate" title="%s projects logs" '.
1378                        'href="%s" type="text/x-opml"/>'."\n",
1379                        $site_name, href(project=>undef, action=>"opml"));
1380         }
1381         if (defined $favicon) {
1382                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1383         }
1384
1385         print "</head>\n" .
1386               "<body>\n" .
1387               "<div class=\"page_header\">\n" .
1388               "<a href=\"" . esc_html($githelp_url) .
1389               "\" title=\"" . esc_html($githelp_label) .
1390               "\">" .
1391               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1392               "</a>\n";
1393         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1394         if (defined $project) {
1395                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1396                 if (defined $action) {
1397                         print " / $action";
1398                 }
1399                 print "\n";
1400                 if (!defined $searchtext) {
1401                         $searchtext = "";
1402                 }
1403                 my $search_hash;
1404                 if (defined $hash_base) {
1405                         $search_hash = $hash_base;
1406                 } elsif (defined $hash) {
1407                         $search_hash = $hash;
1408                 } else {
1409                         $search_hash = "HEAD";
1410                 }
1411                 $cgi->param("a", "search");
1412                 $cgi->param("h", $search_hash);
1413                 print $cgi->startform(-method => "get", -action => $my_uri) .
1414                       "<div class=\"search\">\n" .
1415                       $cgi->hidden(-name => "p") . "\n" .
1416                       $cgi->hidden(-name => "a") . "\n" .
1417                       $cgi->hidden(-name => "h") . "\n" .
1418                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1419                       "</div>" .
1420                       $cgi->end_form() . "\n";
1421         }
1422         print "</div>\n";
1423 }
1424
1425 sub git_footer_html {
1426         print "<div class=\"page_footer\">\n";
1427         if (defined $project) {
1428                 my $descr = git_get_project_description($project);
1429                 if (defined $descr) {
1430                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1431                 }
1432                 print $cgi->a({-href => href(action=>"rss"),
1433                               -class => "rss_logo"}, "RSS") . "\n";
1434         } else {
1435                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1436                               -class => "rss_logo"}, "OPML") . " ";
1437                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1438                               -class => "rss_logo"}, "TXT") . "\n";
1439         }
1440         print "</div>\n" .
1441               "</body>\n" .
1442               "</html>";
1443 }
1444
1445 sub die_error {
1446         my $status = shift || "403 Forbidden";
1447         my $error = shift || "Malformed query, file missing or permission denied";
1448
1449         git_header_html($status);
1450         print <<EOF;
1451 <div class="page_body">
1452 <br /><br />
1453 $status - $error
1454 <br />
1455 </div>
1456 EOF
1457         git_footer_html();
1458         exit;
1459 }
1460
1461 ## ----------------------------------------------------------------------
1462 ## functions printing or outputting HTML: navigation
1463
1464 sub git_print_page_nav {
1465         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1466         $extra = '' if !defined $extra; # pager or formats
1467
1468         my @navs = qw(summary shortlog log commit commitdiff tree);
1469         if ($suppress) {
1470                 @navs = grep { $_ ne $suppress } @navs;
1471         }
1472
1473         my %arg = map { $_ => {action=>$_} } @navs;
1474         if (defined $head) {
1475                 for (qw(commit commitdiff)) {
1476                         $arg{$_}{hash} = $head;
1477                 }
1478                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1479                         for (qw(shortlog log)) {
1480                                 $arg{$_}{hash} = $head;
1481                         }
1482                 }
1483         }
1484         $arg{tree}{hash} = $treehead if defined $treehead;
1485         $arg{tree}{hash_base} = $treebase if defined $treebase;
1486
1487         print "<div class=\"page_nav\">\n" .
1488                 (join " | ",
1489                  map { $_ eq $current ?
1490                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1491                  } @navs);
1492         print "<br/>\n$extra<br/>\n" .
1493               "</div>\n";
1494 }
1495
1496 sub format_paging_nav {
1497         my ($action, $hash, $head, $page, $nrevs) = @_;
1498         my $paging_nav;
1499
1500
1501         if ($hash ne $head || $page) {
1502                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1503         } else {
1504                 $paging_nav .= "HEAD";
1505         }
1506
1507         if ($page > 0) {
1508                 $paging_nav .= " &sdot; " .
1509                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1510                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1511         } else {
1512                 $paging_nav .= " &sdot; prev";
1513         }
1514
1515         if ($nrevs >= (100 * ($page+1)-1)) {
1516                 $paging_nav .= " &sdot; " .
1517                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1518                                  -accesskey => "n", -title => "Alt-n"}, "next");
1519         } else {
1520                 $paging_nav .= " &sdot; next";
1521         }
1522
1523         return $paging_nav;
1524 }
1525
1526 ## ......................................................................
1527 ## functions printing or outputting HTML: div
1528
1529 sub git_print_header_div {
1530         my ($action, $title, $hash, $hash_base) = @_;
1531         my %args = ();
1532
1533         $args{action} = $action;
1534         $args{hash} = $hash if $hash;
1535         $args{hash_base} = $hash_base if $hash_base;
1536
1537         print "<div class=\"header\">\n" .
1538               $cgi->a({-href => href(%args), -class => "title"},
1539               $title ? $title : $action) .
1540               "\n</div>\n";
1541 }
1542
1543 #sub git_print_authorship (\%) {
1544 sub git_print_authorship {
1545         my $co = shift;
1546
1547         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1548         print "<div class=\"author_date\">" .
1549               esc_html($co->{'author_name'}) .
1550               " [$ad{'rfc2822'}";
1551         if ($ad{'hour_local'} < 6) {
1552                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1553                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1554         } else {
1555                 printf(" (%02d:%02d %s)",
1556                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1557         }
1558         print "]</div>\n";
1559 }
1560
1561 sub git_print_page_path {
1562         my $name = shift;
1563         my $type = shift;
1564         my $hb = shift;
1565
1566         if (!defined $name) {
1567                 print "<div class=\"page_path\">/</div>\n";
1568         } else {
1569                 my @dirname = split '/', $name;
1570                 my $basename = pop @dirname;
1571                 my $fullname = '';
1572
1573                 print "<div class=\"page_path\">";
1574                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1575                               -title => 'tree root'}, "[$project]");
1576                 print " / ";
1577                 foreach my $dir (@dirname) {
1578                         $fullname .= ($fullname ? '/' : '') . $dir;
1579                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1580                                                      hash_base=>$hb),
1581                                       -title => $fullname}, esc_html($dir));
1582                         print " / ";
1583                 }
1584                 if (defined $type && $type eq 'blob') {
1585                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1586                                                      hash_base=>$hb),
1587                                       -title => $name}, esc_html($basename));
1588                 } elsif (defined $type && $type eq 'tree') {
1589                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1590                                                      hash_base=>$hb),
1591                                       -title => $name}, esc_html($basename));
1592                 } else {
1593                         print esc_html($basename);
1594                 }
1595                 print "<br/></div>\n";
1596         }
1597 }
1598
1599 # sub git_print_log (\@;%) {
1600 sub git_print_log ($;%) {
1601         my $log = shift;
1602         my %opts = @_;
1603
1604         if ($opts{'-remove_title'}) {
1605                 # remove title, i.e. first line of log
1606                 shift @$log;
1607         }
1608         # remove leading empty lines
1609         while (defined $log->[0] && $log->[0] eq "") {
1610                 shift @$log;
1611         }
1612
1613         # print log
1614         my $signoff = 0;
1615         my $empty = 0;
1616         foreach my $line (@$log) {
1617                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1618                         $signoff = 1;
1619                         $empty = 0;
1620                         if (! $opts{'-remove_signoff'}) {
1621                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1622                                 next;
1623                         } else {
1624                                 # remove signoff lines
1625                                 next;
1626                         }
1627                 } else {
1628                         $signoff = 0;
1629                 }
1630
1631                 # print only one empty line
1632                 # do not print empty line after signoff
1633                 if ($line eq "") {
1634                         next if ($empty || $signoff);
1635                         $empty = 1;
1636                 } else {
1637                         $empty = 0;
1638                 }
1639
1640                 print format_log_line_html($line) . "<br/>\n";
1641         }
1642
1643         if ($opts{'-final_empty_line'}) {
1644                 # end with single empty line
1645                 print "<br/>\n" unless $empty;
1646         }
1647 }
1648
1649 sub git_print_simplified_log {
1650         my $log = shift;
1651         my $remove_title = shift;
1652
1653         git_print_log($log,
1654                 -final_empty_line=> 1,
1655                 -remove_title => $remove_title);
1656 }
1657
1658 # print tree entry (row of git_tree), but without encompassing <tr> element
1659 sub git_print_tree_entry {
1660         my ($t, $basedir, $hash_base, $have_blame) = @_;
1661
1662         my %base_key = ();
1663         $base_key{hash_base} = $hash_base if defined $hash_base;
1664
1665         # The format of a table row is: mode list link.  Where mode is
1666         # the mode of the entry, list is the name of the entry, an href,
1667         # and link is the action links of the entry.
1668
1669         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1670         if ($t->{'type'} eq "blob") {
1671                 print "<td class=\"list\">" .
1672                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1673                                                file_name=>"$basedir$t->{'name'}", %base_key),
1674                                  -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1675                 print "<td class=\"link\">";
1676                 if ($have_blame) {
1677                         print $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1678                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
1679                                       "blame");
1680                 }
1681                 if (defined $hash_base) {
1682                         if ($have_blame) {
1683                                 print " | ";
1684                         }
1685                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1686                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1687                                       "history");
1688                 }
1689                 print " | " .
1690                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1691                                                file_name=>"$basedir$t->{'name'}")},
1692                                 "raw");
1693                 print "</td>\n";
1694
1695         } elsif ($t->{'type'} eq "tree") {
1696                 print "<td class=\"list\">";
1697                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1698                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1699                               esc_html($t->{'name'}));
1700                 print "</td>\n";
1701                 print "<td class=\"link\">";
1702                 if (defined $hash_base) {
1703                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1704                                                      file_name=>"$basedir$t->{'name'}")},
1705                                       "history");
1706                 }
1707                 print "</td>\n";
1708         }
1709 }
1710
1711 ## ......................................................................
1712 ## functions printing large fragments of HTML
1713
1714 sub git_difftree_body {
1715         my ($difftree, $hash, $parent) = @_;
1716
1717         print "<div class=\"list_head\">\n";
1718         if ($#{$difftree} > 10) {
1719                 print(($#{$difftree} + 1) . " files changed:\n");
1720         }
1721         print "</div>\n";
1722
1723         print "<table class=\"diff_tree\">\n";
1724         my $alternate = 1;
1725         my $patchno = 0;
1726         foreach my $line (@{$difftree}) {
1727                 my %diff = parse_difftree_raw_line($line);
1728
1729                 if ($alternate) {
1730                         print "<tr class=\"dark\">\n";
1731                 } else {
1732                         print "<tr class=\"light\">\n";
1733                 }
1734                 $alternate ^= 1;
1735
1736                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1737                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1738                 if ($diff{'to_mode'} ne ('0' x 6)) {
1739                         $to_mode_oct = oct $diff{'to_mode'};
1740                         if (S_ISREG($to_mode_oct)) { # only for regular file
1741                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1742                         }
1743                         $to_file_type = file_type($diff{'to_mode'});
1744                 }
1745                 if ($diff{'from_mode'} ne ('0' x 6)) {
1746                         $from_mode_oct = oct $diff{'from_mode'};
1747                         if (S_ISREG($to_mode_oct)) { # only for regular file
1748                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1749                         }
1750                         $from_file_type = file_type($diff{'from_mode'});
1751                 }
1752
1753                 if ($diff{'status'} eq "A") { # created
1754                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1755                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1756                         $mode_chng   .= "]</span>";
1757                         print "<td>";
1758                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1759                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1760                                        -class => "list"}, esc_html($diff{'file'}));
1761                         print "</td>\n";
1762                         print "<td>$mode_chng</td>\n";
1763                         print "<td class=\"link\">";
1764                         if ($action eq 'commitdiff') {
1765                                 # link to patch
1766                                 $patchno++;
1767                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1768                         }
1769                         print "</td>\n";
1770
1771                 } elsif ($diff{'status'} eq "D") { # deleted
1772                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1773                         print "<td>";
1774                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1775                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1776                                        -class => "list"}, esc_html($diff{'file'}));
1777                         print "</td>\n";
1778                         print "<td>$mode_chng</td>\n";
1779                         print "<td class=\"link\">";
1780                         if ($action eq 'commitdiff') {
1781                                 # link to patch
1782                                 $patchno++;
1783                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1784                                 print " | ";
1785                         }
1786                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1787                                                      file_name=>$diff{'file'})},
1788                                       "blame") . " | ";
1789                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1790                                                      file_name=>$diff{'file'})},
1791                                       "history");
1792                         print "</td>\n";
1793
1794                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1795                         my $mode_chnge = "";
1796                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1797                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1798                                 if ($from_file_type != $to_file_type) {
1799                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1800                                 }
1801                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1802                                         if ($from_mode_str && $to_mode_str) {
1803                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1804                                         } elsif ($to_mode_str) {
1805                                                 $mode_chnge .= " mode: $to_mode_str";
1806                                         }
1807                                 }
1808                                 $mode_chnge .= "]</span>\n";
1809                         }
1810                         print "<td>";
1811                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1812                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1813                                        -class => "list"}, esc_html($diff{'file'}));
1814                         print "</td>\n";
1815                         print "<td>$mode_chnge</td>\n";
1816                         print "<td class=\"link\">";
1817                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1818                                 if ($action eq 'commitdiff') {
1819                                         # link to patch
1820                                         $patchno++;
1821                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1822                                 } else {
1823                                         print $cgi->a({-href => href(action=>"blobdiff",
1824                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1825                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1826                                                                      file_name=>$diff{'file'})},
1827                                                       "diff");
1828                                 }
1829                                 print " | ";
1830                         }
1831                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
1832                                                      file_name=>$diff{'file'})},
1833                                       "blame") . " | ";
1834                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
1835                                                      file_name=>$diff{'file'})},
1836                                       "history");
1837                         print "</td>\n";
1838
1839                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1840                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1841                         my $nstatus = $status_name{$diff{'status'}};
1842                         my $mode_chng = "";
1843                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1844                                 # mode also for directories, so we cannot use $to_mode_str
1845                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1846                         }
1847                         print "<td>" .
1848                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1849                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1850                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1851                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1852                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1853                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1854                                       -class => "list"}, esc_html($diff{'from_file'})) .
1855                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1856                               "<td class=\"link\">";
1857                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1858                                 if ($action eq 'commitdiff') {
1859                                         # link to patch
1860                                         $patchno++;
1861                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1862                                 } else {
1863                                         print $cgi->a({-href => href(action=>"blobdiff",
1864                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1865                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1866                                                                      file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1867                                                       "diff");
1868                                 }
1869                                 print " | ";
1870                         }
1871                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1872                                                      file_name=>$diff{'from_file'})},
1873                                       "blame") . " | ";
1874                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1875                                                      file_name=>$diff{'from_file'})},
1876                                       "history");
1877                         print "</td>\n";
1878
1879                 } # we should not encounter Unmerged (U) or Unknown (X) status
1880                 print "</tr>\n";
1881         }
1882         print "</table>\n";
1883 }
1884
1885 sub git_patchset_body {
1886         my ($fd, $difftree, $hash, $hash_parent) = @_;
1887
1888         my $patch_idx = 0;
1889         my $in_header = 0;
1890         my $patch_found = 0;
1891         my $diffinfo;
1892
1893         print "<div class=\"patchset\">\n";
1894
1895         LINE:
1896         while (my $patch_line = <$fd>) {
1897                 chomp $patch_line;
1898
1899                 if ($patch_line =~ m/^diff /) { # "git diff" header
1900                         # beginning of patch (in patchset)
1901                         if ($patch_found) {
1902                                 # close previous patch
1903                                 print "</div>\n"; # class="patch"
1904                         } else {
1905                                 # first patch in patchset
1906                                 $patch_found = 1;
1907                         }
1908                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1909
1910                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1911                                 $diffinfo = $difftree->[$patch_idx];
1912                         } else {
1913                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1914                         }
1915                         $patch_idx++;
1916
1917                         # for now, no extended header, hence we skip empty patches
1918                         # companion to  next LINE if $in_header;
1919                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1920                                 $in_header = 1;
1921                                 next LINE;
1922                         }
1923
1924                         if ($diffinfo->{'status'} eq "A") { # added
1925                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1926                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1927                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1928                                               $diffinfo->{'to_id'}) . " (new)" .
1929                                       "</div>\n"; # class="diff_info"
1930
1931                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1932                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1933                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1934                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1935                                               $diffinfo->{'from_id'}) . " (deleted)" .
1936                                       "</div>\n"; # class="diff_info"
1937
1938                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1939                                  $diffinfo->{'status'} eq "C" || # copied
1940                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1941                                 print "<div class=\"diff_info\">" .
1942                                       file_type($diffinfo->{'from_mode'}) . ":" .
1943                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1944                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1945                                               $diffinfo->{'from_id'}) .
1946                                       " -> " .
1947                                       file_type($diffinfo->{'to_mode'}) . ":" .
1948                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1949                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1950                                               $diffinfo->{'to_id'});
1951                                 print "</div>\n"; # class="diff_info"
1952
1953                         } else { # modified, mode changed, ...
1954                                 print "<div class=\"diff_info\">" .
1955                                       file_type($diffinfo->{'from_mode'}) . ":" .
1956                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1957                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1958                                               $diffinfo->{'from_id'}) .
1959                                       " -> " .
1960                                       file_type($diffinfo->{'to_mode'}) . ":" .
1961                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1962                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1963                                               $diffinfo->{'to_id'});
1964                                 print "</div>\n"; # class="diff_info"
1965                         }
1966
1967                         #print "<div class=\"diff extended_header\">\n";
1968                         $in_header = 1;
1969                         next LINE;
1970                 } # start of patch in patchset
1971
1972
1973                 if ($in_header && $patch_line =~ m/^---/) {
1974                         #print "</div>\n"; # class="diff extended_header"
1975                         $in_header = 0;
1976
1977                         my $file = $diffinfo->{'from_file'};
1978                         $file  ||= $diffinfo->{'file'};
1979                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1980                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1981                                         -class => "list"}, esc_html($file));
1982                         $patch_line =~ s|a/.*$|a/$file|g;
1983                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1984
1985                         $patch_line = <$fd>;
1986                         chomp $patch_line;
1987
1988                         #$patch_line =~ m/^+++/;
1989                         $file    = $diffinfo->{'to_file'};
1990                         $file  ||= $diffinfo->{'file'};
1991                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1992                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1993                                         -class => "list"}, esc_html($file));
1994                         $patch_line =~ s|b/.*|b/$file|g;
1995                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1996
1997                         next LINE;
1998                 }
1999                 next LINE if $in_header;
2000
2001                 print format_diff_line($patch_line);
2002         }
2003         print "</div>\n" if $patch_found; # class="patch"
2004
2005         print "</div>\n"; # class="patchset"
2006 }
2007
2008 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2009
2010 sub git_shortlog_body {
2011         # uses global variable $project
2012         my ($revlist, $from, $to, $refs, $extra) = @_;
2013
2014         $from = 0 unless defined $from;
2015         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2016
2017         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2018         my $alternate = 1;
2019         for (my $i = $from; $i <= $to; $i++) {
2020                 my $commit = $revlist->[$i];
2021                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2022                 my $ref = format_ref_marker($refs, $commit);
2023                 my %co = parse_commit($commit);
2024                 if ($alternate) {
2025                         print "<tr class=\"dark\">\n";
2026                 } else {
2027                         print "<tr class=\"light\">\n";
2028                 }
2029                 $alternate ^= 1;
2030                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2031                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2032                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2033                       "<td>";
2034                 print format_subject_html($co{'title'}, $co{'title_short'},
2035                                           href(action=>"commit", hash=>$commit), $ref);
2036                 print "</td>\n" .
2037                       "<td class=\"link\">" .
2038                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2039                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2040                 if (gitweb_have_snapshot()) {
2041                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2042                 }
2043                 print "</td>\n" .
2044                       "</tr>\n";
2045         }
2046         if (defined $extra) {
2047                 print "<tr>\n" .
2048                       "<td colspan=\"4\">$extra</td>\n" .
2049                       "</tr>\n";
2050         }
2051         print "</table>\n";
2052 }
2053
2054 sub git_history_body {
2055         # Warning: assumes constant type (blob or tree) during history
2056         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2057
2058         $from = 0 unless defined $from;
2059         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2060
2061         print "<table class=\"history\" cellspacing=\"0\">\n";
2062         my $alternate = 1;
2063         for (my $i = $from; $i <= $to; $i++) {
2064                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2065                         next;
2066                 }
2067
2068                 my $commit = $1;
2069                 my %co = parse_commit($commit);
2070                 if (!%co) {
2071                         next;
2072                 }
2073
2074                 my $ref = format_ref_marker($refs, $commit);
2075
2076                 if ($alternate) {
2077                         print "<tr class=\"dark\">\n";
2078                 } else {
2079                         print "<tr class=\"light\">\n";
2080                 }
2081                 $alternate ^= 1;
2082                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2083                       # shortlog uses      chop_str($co{'author_name'}, 10)
2084                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2085                       "<td>";
2086                 # originally git_history used chop_str($co{'title'}, 50)
2087                 print format_subject_html($co{'title'}, $co{'title_short'},
2088                                           href(action=>"commit", hash=>$commit), $ref);
2089                 print "</td>\n" .
2090                       "<td class=\"link\">" .
2091                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2092                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2093
2094                 if ($ftype eq 'blob') {
2095                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2096                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2097                         if (defined $blob_current && defined $blob_parent &&
2098                                         $blob_current ne $blob_parent) {
2099                                 print " | " .
2100                                         $cgi->a({-href => href(action=>"blobdiff",
2101                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2102                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2103                                                                file_name=>$file_name)},
2104                                                 "diff to current");
2105                         }
2106                 }
2107                 print "</td>\n" .
2108                       "</tr>\n";
2109         }
2110         if (defined $extra) {
2111                 print "<tr>\n" .
2112                       "<td colspan=\"4\">$extra</td>\n" .
2113                       "</tr>\n";
2114         }
2115         print "</table>\n";
2116 }
2117
2118 sub git_tags_body {
2119         # uses global variable $project
2120         my ($taglist, $from, $to, $extra) = @_;
2121         $from = 0 unless defined $from;
2122         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2123
2124         print "<table class=\"tags\" cellspacing=\"0\">\n";
2125         my $alternate = 1;
2126         for (my $i = $from; $i <= $to; $i++) {
2127                 my $entry = $taglist->[$i];
2128                 my %tag = %$entry;
2129                 my $comment_lines = $tag{'comment'};
2130                 my $comment = shift @$comment_lines;
2131                 my $comment_short;
2132                 if (defined $comment) {
2133                         $comment_short = chop_str($comment, 30, 5);
2134                 }
2135                 if ($alternate) {
2136                         print "<tr class=\"dark\">\n";
2137                 } else {
2138                         print "<tr class=\"light\">\n";
2139                 }
2140                 $alternate ^= 1;
2141                 print "<td><i>$tag{'age'}</i></td>\n" .
2142                       "<td>" .
2143                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2144                                -class => "list name"}, esc_html($tag{'name'})) .
2145                       "</td>\n" .
2146                       "<td>";
2147                 if (defined $comment) {
2148                         print format_subject_html($comment, $comment_short,
2149                                                   href(action=>"tag", hash=>$tag{'id'}));
2150                 }
2151                 print "</td>\n" .
2152                       "<td class=\"selflink\">";
2153                 if ($tag{'type'} eq "tag") {
2154                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2155                 } else {
2156                         print "&nbsp;";
2157                 }
2158                 print "</td>\n" .
2159                       "<td class=\"link\">" . " | " .
2160                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2161                 if ($tag{'reftype'} eq "commit") {
2162                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2163                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2164                 } elsif ($tag{'reftype'} eq "blob") {
2165                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2166                 }
2167                 print "</td>\n" .
2168                       "</tr>";
2169         }
2170         if (defined $extra) {
2171                 print "<tr>\n" .
2172                       "<td colspan=\"5\">$extra</td>\n" .
2173                       "</tr>\n";
2174         }
2175         print "</table>\n";
2176 }
2177
2178 sub git_heads_body {
2179         # uses global variable $project
2180         my ($headlist, $head, $from, $to, $extra) = @_;
2181         $from = 0 unless defined $from;
2182         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2183
2184         print "<table class=\"heads\" cellspacing=\"0\">\n";
2185         my $alternate = 1;
2186         for (my $i = $from; $i <= $to; $i++) {
2187                 my $entry = $headlist->[$i];
2188                 my %tag = %$entry;
2189                 my $curr = $tag{'id'} eq $head;
2190                 if ($alternate) {
2191                         print "<tr class=\"dark\">\n";
2192                 } else {
2193                         print "<tr class=\"light\">\n";
2194                 }
2195                 $alternate ^= 1;
2196                 print "<td><i>$tag{'age'}</i></td>\n" .
2197                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2198                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2199                                -class => "list name"},esc_html($tag{'name'})) .
2200                       "</td>\n" .
2201                       "<td class=\"link\">" .
2202                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2203                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") . " | " .
2204                       $cgi->a({-href => href(action=>"tree", hash=>$tag{'name'}, hash_base=>$tag{'name'})}, "tree") .
2205                       "</td>\n" .
2206                       "</tr>";
2207         }
2208         if (defined $extra) {
2209                 print "<tr>\n" .
2210                       "<td colspan=\"3\">$extra</td>\n" .
2211                       "</tr>\n";
2212         }
2213         print "</table>\n";
2214 }
2215
2216 ## ======================================================================
2217 ## ======================================================================
2218 ## actions
2219
2220 sub git_project_list {
2221         my $order = $cgi->param('o');
2222         if (defined $order && $order !~ m/project|descr|owner|age/) {
2223                 die_error(undef, "Unknown order parameter");
2224         }
2225
2226         my @list = git_get_projects_list();
2227         my @projects;
2228         if (!@list) {
2229                 die_error(undef, "No projects found");
2230         }
2231         foreach my $pr (@list) {
2232                 my $head = git_get_head_hash($pr->{'path'});
2233                 if (!defined $head) {
2234                         next;
2235                 }
2236                 $git_dir = "$projectroot/$pr->{'path'}";
2237                 my %co = parse_commit($head);
2238                 if (!%co) {
2239                         next;
2240                 }
2241                 $pr->{'commit'} = \%co;
2242                 if (!defined $pr->{'descr'}) {
2243                         my $descr = git_get_project_description($pr->{'path'}) || "";
2244                         $pr->{'descr'} = chop_str($descr, 25, 5);
2245                 }
2246                 if (!defined $pr->{'owner'}) {
2247                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2248                 }
2249                 push @projects, $pr;
2250         }
2251
2252         git_header_html();
2253         if (-f $home_text) {
2254                 print "<div class=\"index_include\">\n";
2255                 open (my $fd, $home_text);
2256                 print <$fd>;
2257                 close $fd;
2258                 print "</div>\n";
2259         }
2260         print "<table class=\"project_list\">\n" .
2261               "<tr>\n";
2262         $order ||= "project";
2263         if ($order eq "project") {
2264                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2265                 print "<th>Project</th>\n";
2266         } else {
2267                 print "<th>" .
2268                       $cgi->a({-href => href(project=>undef, order=>'project'),
2269                                -class => "header"}, "Project") .
2270                       "</th>\n";
2271         }
2272         if ($order eq "descr") {
2273                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2274                 print "<th>Description</th>\n";
2275         } else {
2276                 print "<th>" .
2277                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2278                                -class => "header"}, "Description") .
2279                       "</th>\n";
2280         }
2281         if ($order eq "owner") {
2282                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2283                 print "<th>Owner</th>\n";
2284         } else {
2285                 print "<th>" .
2286                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2287                                -class => "header"}, "Owner") .
2288                       "</th>\n";
2289         }
2290         if ($order eq "age") {
2291                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2292                 print "<th>Last Change</th>\n";
2293         } else {
2294                 print "<th>" .
2295                       $cgi->a({-href => href(project=>undef, order=>'age'),
2296                                -class => "header"}, "Last Change") .
2297                       "</th>\n";
2298         }
2299         print "<th></th>\n" .
2300               "</tr>\n";
2301         my $alternate = 1;
2302         foreach my $pr (@projects) {
2303                 if ($alternate) {
2304                         print "<tr class=\"dark\">\n";
2305                 } else {
2306                         print "<tr class=\"light\">\n";
2307                 }
2308                 $alternate ^= 1;
2309                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2310                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2311                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2312                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2313                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2314                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2315                       "<td class=\"link\">" .
2316                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2317                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2318                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2319                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2320                       "</td>\n" .
2321                       "</tr>\n";
2322         }
2323         print "</table>\n";
2324         git_footer_html();
2325 }
2326
2327 sub git_project_index {
2328         my @projects = git_get_projects_list();
2329
2330         print $cgi->header(
2331                 -type => 'text/plain',
2332                 -charset => 'utf-8',
2333                 -content_disposition => 'inline; filename="index.aux"');
2334
2335         foreach my $pr (@projects) {
2336                 if (!exists $pr->{'owner'}) {
2337                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2338                 }
2339
2340                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2341                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2342                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2343                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2344                 $path  =~ s/ /\+/g;
2345                 $owner =~ s/ /\+/g;
2346
2347                 print "$path $owner\n";
2348         }
2349 }
2350
2351 sub git_summary {
2352         my $descr = git_get_project_description($project) || "none";
2353         my $head = git_get_head_hash($project);
2354         my %co = parse_commit($head);
2355         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2356
2357         my $owner = git_get_project_owner($project);
2358
2359         my ($reflist, $refs) = git_get_refs_list();
2360
2361         my @taglist;
2362         my @headlist;
2363         foreach my $ref (@$reflist) {
2364                 if ($ref->{'name'} =~ s!^heads/!!) {
2365                         push @headlist, $ref;
2366                 } else {
2367                         $ref->{'name'} =~ s!^tags/!!;
2368                         push @taglist, $ref;
2369                 }
2370         }
2371
2372         git_header_html();
2373         git_print_page_nav('summary','', $head);
2374
2375         print "<div class=\"title\">&nbsp;</div>\n";
2376         print "<table cellspacing=\"0\">\n" .
2377               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2378               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2379               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2380         # use per project git URL list in $projectroot/$project/cloneurl
2381         # or make project git URL from git base URL and project name
2382         my $url_tag = "URL";
2383         my @url_list = git_get_project_url_list($project);
2384         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2385         foreach my $git_url (@url_list) {
2386                 next unless $git_url;
2387                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2388                 $url_tag = "";
2389         }
2390         print "</table>\n";
2391
2392         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2393                 git_get_head_hash($project)
2394                 or die_error(undef, "Open git-rev-list failed");
2395         my @revlist = map { chomp; $_ } <$fd>;
2396         close $fd;
2397         git_print_header_div('shortlog');
2398         git_shortlog_body(\@revlist, 0, 15, $refs,
2399                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2400
2401         if (@taglist) {
2402                 git_print_header_div('tags');
2403                 git_tags_body(\@taglist, 0, 15,
2404                               $cgi->a({-href => href(action=>"tags")}, "..."));
2405         }
2406
2407         if (@headlist) {
2408                 git_print_header_div('heads');
2409                 git_heads_body(\@headlist, $head, 0, 15,
2410                                $cgi->a({-href => href(action=>"heads")}, "..."));
2411         }
2412
2413         git_footer_html();
2414 }
2415
2416 sub git_tag {
2417         my $head = git_get_head_hash($project);
2418         git_header_html();
2419         git_print_page_nav('','', $head,undef,$head);
2420         my %tag = parse_tag($hash);
2421         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2422         print "<div class=\"title_text\">\n" .
2423               "<table cellspacing=\"0\">\n" .
2424               "<tr>\n" .
2425               "<td>object</td>\n" .
2426               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2427                                $tag{'object'}) . "</td>\n" .
2428               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2429                                               $tag{'type'}) . "</td>\n" .
2430               "</tr>\n";
2431         if (defined($tag{'author'})) {
2432                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2433                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2434                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2435                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2436                         "</td></tr>\n";
2437         }
2438         print "</table>\n\n" .
2439               "</div>\n";
2440         print "<div class=\"page_body\">";
2441         my $comment = $tag{'comment'};
2442         foreach my $line (@$comment) {
2443                 print esc_html($line) . "<br/>\n";
2444         }
2445         print "</div>\n";
2446         git_footer_html();
2447 }
2448
2449 sub git_blame2 {
2450         my $fd;
2451         my $ftype;
2452
2453         my ($have_blame) = gitweb_check_feature('blame');
2454         if (!$have_blame) {
2455                 die_error('403 Permission denied', "Permission denied");
2456         }
2457         die_error('404 Not Found', "File name not defined") if (!$file_name);
2458         $hash_base ||= git_get_head_hash($project);
2459         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2460         my %co = parse_commit($hash_base)
2461                 or die_error(undef, "Reading commit failed");
2462         if (!defined $hash) {
2463                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2464                         or die_error(undef, "Error looking up file");
2465         }
2466         $ftype = git_get_type($hash);
2467         if ($ftype !~ "blob") {
2468                 die_error("400 Bad Request", "Object is not a blob");
2469         }
2470         open ($fd, "-|", git_cmd(), "blame", '-l', '--', $file_name, $hash_base)
2471                 or die_error(undef, "Open git-blame failed");
2472         git_header_html();
2473         my $formats_nav =
2474                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2475                         "blob") .
2476                 " | " .
2477                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2478                         "history") .
2479                 " | " .
2480                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2481                         "HEAD");
2482         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2483         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2484         git_print_page_path($file_name, $ftype, $hash_base);
2485         my @rev_color = (qw(light2 dark2));
2486         my $num_colors = scalar(@rev_color);
2487         my $current_color = 0;
2488         my $last_rev;
2489         print <<HTML;
2490 <div class="page_body">
2491 <table class="blame">
2492 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2493 HTML
2494         while (<$fd>) {
2495                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2496                 my $full_rev = $1;
2497                 my $rev = substr($full_rev, 0, 8);
2498                 my $lineno = $2;
2499                 my $data = $3;
2500
2501                 if (!defined $last_rev) {
2502                         $last_rev = $full_rev;
2503                 } elsif ($last_rev ne $full_rev) {
2504                         $last_rev = $full_rev;
2505                         $current_color = ++$current_color % $num_colors;
2506                 }
2507                 print "<tr class=\"$rev_color[$current_color]\">\n";
2508                 print "<td class=\"sha1\">" .
2509                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2510                                 esc_html($rev)) . "</td>\n";
2511                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2512                       esc_html($lineno) . "</a></td>\n";
2513                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2514                 print "</tr>\n";
2515         }
2516         print "</table>\n";
2517         print "</div>";
2518         close $fd
2519                 or print "Reading blob failed\n";
2520         git_footer_html();
2521 }
2522
2523 sub git_blame {
2524         my $fd;
2525
2526         my ($have_blame) = gitweb_check_feature('blame');
2527         if (!$have_blame) {
2528                 die_error('403 Permission denied', "Permission denied");
2529         }
2530         die_error('404 Not Found', "File name not defined") if (!$file_name);
2531         $hash_base ||= git_get_head_hash($project);
2532         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2533         my %co = parse_commit($hash_base)
2534                 or die_error(undef, "Reading commit failed");
2535         if (!defined $hash) {
2536                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2537                         or die_error(undef, "Error lookup file");
2538         }
2539         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2540                 or die_error(undef, "Open git-annotate failed");
2541         git_header_html();
2542         my $formats_nav =
2543                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2544                         "blob") .
2545                 " | " .
2546                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2547                         "history") .
2548                 " | " .
2549                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2550                         "HEAD");
2551         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2552         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2553         git_print_page_path($file_name, 'blob', $hash_base);
2554         print "<div class=\"page_body\">\n";
2555         print <<HTML;
2556 <table class="blame">
2557   <tr>
2558     <th>Commit</th>
2559     <th>Age</th>
2560     <th>Author</th>
2561     <th>Line</th>
2562     <th>Data</th>
2563   </tr>
2564 HTML
2565         my @line_class = (qw(light dark));
2566         my $line_class_len = scalar (@line_class);
2567         my $line_class_num = $#line_class;
2568         while (my $line = <$fd>) {
2569                 my $long_rev;
2570                 my $short_rev;
2571                 my $author;
2572                 my $time;
2573                 my $lineno;
2574                 my $data;
2575                 my $age;
2576                 my $age_str;
2577                 my $age_class;
2578
2579                 chomp $line;
2580                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2581
2582                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2583                         $long_rev = $1;
2584                         $author   = $2;
2585                         $time     = $3;
2586                         $lineno   = $4;
2587                         $data     = $5;
2588                 } else {
2589                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2590                         next;
2591                 }
2592                 $short_rev  = substr ($long_rev, 0, 8);
2593                 $age        = time () - $time;
2594                 $age_str    = age_string ($age);
2595                 $age_str    =~ s/ /&nbsp;/g;
2596                 $age_class  = age_class($age);
2597                 $author     = esc_html ($author);
2598                 $author     =~ s/ /&nbsp;/g;
2599
2600                 $data = untabify($data);
2601                 $data = esc_html ($data);
2602
2603                 print <<HTML;
2604   <tr class="$line_class[$line_class_num]">
2605     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2606     <td class="$age_class">$age_str</td>
2607     <td>$author</td>
2608     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2609     <td class="pre">$data</td>
2610   </tr>
2611 HTML
2612         } # while (my $line = <$fd>)
2613         print "</table>\n\n";
2614         close $fd
2615                 or print "Reading blob failed.\n";
2616         print "</div>";
2617         git_footer_html();
2618 }
2619
2620 sub git_tags {
2621         my $head = git_get_head_hash($project);
2622         git_header_html();
2623         git_print_page_nav('','', $head,undef,$head);
2624         git_print_header_div('summary', $project);
2625
2626         my ($taglist) = git_get_refs_list("tags");
2627         if (@$taglist) {
2628                 git_tags_body($taglist);
2629         }
2630         git_footer_html();
2631 }
2632
2633 sub git_heads {
2634         my $head = git_get_head_hash($project);
2635         git_header_html();
2636         git_print_page_nav('','', $head,undef,$head);
2637         git_print_header_div('summary', $project);
2638
2639         my ($headlist) = git_get_refs_list("heads");
2640         if (@$headlist) {
2641                 git_heads_body($headlist, $head);
2642         }
2643         git_footer_html();
2644 }
2645
2646 sub git_blob_plain {
2647         my $expires;
2648
2649         if (!defined $hash) {
2650                 if (defined $file_name) {
2651                         my $base = $hash_base || git_get_head_hash($project);
2652                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2653                                 or die_error(undef, "Error lookup file");
2654                 } else {
2655                         die_error(undef, "No file name defined");
2656                 }
2657         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2658                 # blobs defined by non-textual hash id's can be cached
2659                 $expires = "+1d";
2660         }
2661
2662         my $type = shift;
2663         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2664                 or die_error(undef, "Couldn't cat $file_name, $hash");
2665
2666         $type ||= blob_mimetype($fd, $file_name);
2667
2668         # save as filename, even when no $file_name is given
2669         my $save_as = "$hash";
2670         if (defined $file_name) {
2671                 $save_as = $file_name;
2672         } elsif ($type =~ m/^text\//) {
2673                 $save_as .= '.txt';
2674         }
2675
2676         print $cgi->header(
2677                 -type => "$type",
2678                 -expires=>$expires,
2679                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2680         undef $/;
2681         binmode STDOUT, ':raw';
2682         print <$fd>;
2683         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2684         $/ = "\n";
2685         close $fd;
2686 }
2687
2688 sub git_blob {
2689         my $expires;
2690
2691         if (!defined $hash) {
2692                 if (defined $file_name) {
2693                         my $base = $hash_base || git_get_head_hash($project);
2694                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2695                                 or die_error(undef, "Error lookup file");
2696                 } else {
2697                         die_error(undef, "No file name defined");
2698                 }
2699         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2700                 # blobs defined by non-textual hash id's can be cached
2701                 $expires = "+1d";
2702         }
2703
2704         my ($have_blame) = gitweb_check_feature('blame');
2705         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2706                 or die_error(undef, "Couldn't cat $file_name, $hash");
2707         my $mimetype = blob_mimetype($fd, $file_name);
2708         if ($mimetype !~ m/^text\//) {
2709                 close $fd;
2710                 return git_blob_plain($mimetype);
2711         }
2712         git_header_html(undef, $expires);
2713         my $formats_nav = '';
2714         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2715                 if (defined $file_name) {
2716                         if ($have_blame) {
2717                                 $formats_nav .=
2718                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2719                                                                hash=>$hash, file_name=>$file_name)},
2720                                                 "blame") .
2721                                         " | ";
2722                         }
2723                         $formats_nav .=
2724                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2725                                                        hash=>$hash, file_name=>$file_name)},
2726                                         "history") .
2727                                 " | " .
2728                                 $cgi->a({-href => href(action=>"blob_plain",
2729                                                        hash=>$hash, file_name=>$file_name)},
2730                                         "raw") .
2731                                 " | " .
2732                                 $cgi->a({-href => href(action=>"blob",
2733                                                        hash_base=>"HEAD", file_name=>$file_name)},
2734                                         "HEAD");
2735                 } else {
2736                         $formats_nav .=
2737                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2738                 }
2739                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2740                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2741         } else {
2742                 print "<div class=\"page_nav\">\n" .
2743                       "<br/><br/></div>\n" .
2744                       "<div class=\"title\">$hash</div>\n";
2745         }
2746         git_print_page_path($file_name, "blob", $hash_base);
2747         print "<div class=\"page_body\">\n";
2748         my $nr;
2749         while (my $line = <$fd>) {
2750                 chomp $line;
2751                 $nr++;
2752                 $line = untabify($line);
2753                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2754                        $nr, $nr, $nr, esc_html($line);
2755         }
2756         close $fd
2757                 or print "Reading blob failed.\n";
2758         print "</div>";
2759         git_footer_html();
2760 }
2761
2762 sub git_tree {
2763         my $have_snapshot = gitweb_have_snapshot();
2764
2765         if (!defined $hash_base) {
2766                 $hash_base = "HEAD";
2767         }
2768         if (!defined $hash) {
2769                 if (defined $file_name) {
2770                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
2771                 } else {
2772                         $hash = $hash_base;
2773                 }
2774         }
2775         $/ = "\0";
2776         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2777                 or die_error(undef, "Open git-ls-tree failed");
2778         my @entries = map { chomp; $_ } <$fd>;
2779         close $fd or die_error(undef, "Reading tree failed");
2780         $/ = "\n";
2781
2782         my $refs = git_get_references();
2783         my $ref = format_ref_marker($refs, $hash_base);
2784         git_header_html();
2785         my $base = "";
2786         my ($have_blame) = gitweb_check_feature('blame');
2787         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2788                 my @views_nav = ();
2789                 if (defined $file_name) {
2790                         push @views_nav,
2791                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2792                                                        hash=>$hash, file_name=>$file_name)},
2793                                         "history"),
2794                                 $cgi->a({-href => href(action=>"tree",
2795                                                        hash_base=>"HEAD", file_name=>$file_name)},
2796                                         "HEAD"),
2797                 }
2798                 if ($have_snapshot) {
2799                         # FIXME: Should be available when we have no hash base as well.
2800                         push @views_nav,
2801                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
2802                                         "snapshot");
2803                 }
2804                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
2805                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2806         } else {
2807                 undef $hash_base;
2808                 print "<div class=\"page_nav\">\n";
2809                 print "<br/><br/></div>\n";
2810                 print "<div class=\"title\">$hash</div>\n";
2811         }
2812         if (defined $file_name) {
2813                 $base = esc_html("$file_name/");
2814         }
2815         git_print_page_path($file_name, 'tree', $hash_base);
2816         print "<div class=\"page_body\">\n";
2817         print "<table cellspacing=\"0\">\n";
2818         my $alternate = 1;
2819         foreach my $line (@entries) {
2820                 my %t = parse_ls_tree_line($line, -z => 1);
2821
2822                 if ($alternate) {
2823                         print "<tr class=\"dark\">\n";
2824                 } else {
2825                         print "<tr class=\"light\">\n";
2826                 }
2827                 $alternate ^= 1;
2828
2829                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2830
2831                 print "</tr>\n";
2832         }
2833         print "</table>\n" .
2834               "</div>";
2835         git_footer_html();
2836 }
2837
2838 sub git_snapshot {
2839         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2840         my $have_snapshot = (defined $ctype && defined $suffix);
2841         if (!$have_snapshot) {
2842                 die_error('403 Permission denied', "Permission denied");
2843         }
2844
2845         if (!defined $hash) {
2846                 $hash = git_get_head_hash($project);
2847         }
2848
2849         my $filename = basename($project) . "-$hash.tar.$suffix";
2850
2851         print $cgi->header(
2852                 -type => 'application/x-tar',
2853                 -content_encoding => $ctype,
2854                 -content_disposition => 'inline; filename="' . "$filename" . '"',
2855                 -status => '200 OK');
2856
2857         my $git = git_cmd_str();
2858         my $name = $project;
2859         $name =~ s/\047/\047\\\047\047/g;
2860         open my $fd, "-|",
2861         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
2862                 or die_error(undef, "Execute git-tar-tree failed.");
2863         binmode STDOUT, ':raw';
2864         print <$fd>;
2865         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2866         close $fd;
2867
2868 }
2869
2870 sub git_log {
2871         my $head = git_get_head_hash($project);
2872         if (!defined $hash) {
2873                 $hash = $head;
2874         }
2875         if (!defined $page) {
2876                 $page = 0;
2877         }
2878         my $refs = git_get_references();
2879
2880         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2881         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2882                 or die_error(undef, "Open git-rev-list failed");
2883         my @revlist = map { chomp; $_ } <$fd>;
2884         close $fd;
2885
2886         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2887
2888         git_header_html();
2889         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2890
2891         if (!@revlist) {
2892                 my %co = parse_commit($hash);
2893
2894                 git_print_header_div('summary', $project);
2895                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2896         }
2897         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2898                 my $commit = $revlist[$i];
2899                 my $ref = format_ref_marker($refs, $commit);
2900                 my %co = parse_commit($commit);
2901                 next if !%co;
2902                 my %ad = parse_date($co{'author_epoch'});
2903                 git_print_header_div('commit',
2904                                "<span class=\"age\">$co{'age_string'}</span>" .
2905                                esc_html($co{'title'}) . $ref,
2906                                $commit);
2907                 print "<div class=\"title_text\">\n" .
2908                       "<div class=\"log_link\">\n" .
2909                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2910                       " | " .
2911                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2912                       " | " .
2913                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
2914                       "<br/>\n" .
2915                       "</div>\n" .
2916                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2917                       "</div>\n";
2918
2919                 print "<div class=\"log_body\">\n";
2920                 git_print_simplified_log($co{'comment'});
2921                 print "</div>\n";
2922         }
2923         git_footer_html();
2924 }
2925
2926 sub git_commit {
2927         my %co = parse_commit($hash);
2928         if (!%co) {
2929                 die_error(undef, "Unknown commit object");
2930         }
2931         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2932         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2933
2934         my $parent = $co{'parent'};
2935         if (!defined $parent) {
2936                 $parent = "--root";
2937         }
2938         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2939                 or die_error(undef, "Open git-diff-tree failed");
2940         my @difftree = map { chomp; $_ } <$fd>;
2941         close $fd or die_error(undef, "Reading git-diff-tree failed");
2942
2943         # non-textual hash id's can be cached
2944         my $expires;
2945         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2946                 $expires = "+1d";
2947         }
2948         my $refs = git_get_references();
2949         my $ref = format_ref_marker($refs, $co{'id'});
2950
2951         my $have_snapshot = gitweb_have_snapshot();
2952
2953         my @views_nav = ();
2954         if (defined $file_name && defined $co{'parent'}) {
2955                 push @views_nav,
2956                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2957                                 "blame");
2958         }
2959         git_header_html(undef, $expires);
2960         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2961                            $hash, $co{'tree'}, $hash,
2962                            join (' | ', @views_nav));
2963
2964         if (defined $co{'parent'}) {
2965                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2966         } else {
2967                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2968         }
2969         print "<div class=\"title_text\">\n" .
2970               "<table cellspacing=\"0\">\n";
2971         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2972               "<tr>" .
2973               "<td></td><td> $ad{'rfc2822'}";
2974         if ($ad{'hour_local'} < 6) {
2975                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2976                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2977         } else {
2978                 printf(" (%02d:%02d %s)",
2979                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2980         }
2981         print "</td>" .
2982               "</tr>\n";
2983         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2984         print "<tr><td></td><td> $cd{'rfc2822'}" .
2985               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2986               "</td></tr>\n";
2987         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2988         print "<tr>" .
2989               "<td>tree</td>" .
2990               "<td class=\"sha1\">" .
2991               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2992                        class => "list"}, $co{'tree'}) .
2993               "</td>" .
2994               "<td class=\"link\">" .
2995               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2996                       "tree");
2997         if ($have_snapshot) {
2998                 print " | " .
2999                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3000         }
3001         print "</td>" .
3002               "</tr>\n";
3003         my $parents = $co{'parents'};
3004         foreach my $par (@$parents) {
3005                 print "<tr>" .
3006                       "<td>parent</td>" .
3007                       "<td class=\"sha1\">" .
3008                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3009                                class => "list"}, $par) .
3010                       "</td>" .
3011                       "<td class=\"link\">" .
3012                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3013                       " | " .
3014                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3015                       "</td>" .
3016                       "</tr>\n";
3017         }
3018         print "</table>".
3019               "</div>\n";
3020
3021         print "<div class=\"page_body\">\n";
3022         git_print_log($co{'comment'});
3023         print "</div>\n";
3024
3025         git_difftree_body(\@difftree, $hash, $parent);
3026
3027         git_footer_html();
3028 }
3029
3030 sub git_blobdiff {
3031         my $format = shift || 'html';
3032
3033         my $fd;
3034         my @difftree;
3035         my %diffinfo;
3036         my $expires;
3037
3038         # preparing $fd and %diffinfo for git_patchset_body
3039         # new style URI
3040         if (defined $hash_base && defined $hash_parent_base) {
3041                 if (defined $file_name) {
3042                         # read raw output
3043                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
3044                                 "--", $file_name
3045                                 or die_error(undef, "Open git-diff-tree failed");
3046                         @difftree = map { chomp; $_ } <$fd>;
3047                         close $fd
3048                                 or die_error(undef, "Reading git-diff-tree failed");
3049                         @difftree
3050                                 or die_error('404 Not Found', "Blob diff not found");
3051
3052                 } elsif (defined $hash &&
3053                          $hash =~ /[0-9a-fA-F]{40}/) {
3054                         # try to find filename from $hash
3055
3056                         # read filtered raw output
3057                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
3058                                 or die_error(undef, "Open git-diff-tree failed");
3059                         @difftree =
3060                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3061                                 # $hash == to_id
3062                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3063                                 map { chomp; $_ } <$fd>;
3064                         close $fd
3065                                 or die_error(undef, "Reading git-diff-tree failed");
3066                         @difftree
3067                                 or die_error('404 Not Found', "Blob diff not found");
3068
3069                 } else {
3070                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3071                 }
3072
3073                 if (@difftree > 1) {
3074                         die_error('404 Not Found', "Ambiguous blob diff specification");
3075                 }
3076
3077                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3078                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3079                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3080
3081                 $hash_parent ||= $diffinfo{'from_id'};
3082                 $hash        ||= $diffinfo{'to_id'};
3083
3084                 # non-textual hash id's can be cached
3085                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3086                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3087                         $expires = '+1d';
3088                 }
3089
3090                 # open patch output
3091                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3092                         '-p', $hash_parent_base, $hash_base,
3093                         "--", $file_name
3094                         or die_error(undef, "Open git-diff-tree failed");
3095         }
3096
3097         # old/legacy style URI
3098         if (!%diffinfo && # if new style URI failed
3099             defined $hash && defined $hash_parent) {
3100                 # fake git-diff-tree raw output
3101                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3102                 $diffinfo{'from_id'} = $hash_parent;
3103                 $diffinfo{'to_id'}   = $hash;
3104                 if (defined $file_name) {
3105                         if (defined $file_parent) {
3106                                 $diffinfo{'status'} = '2';
3107                                 $diffinfo{'from_file'} = $file_parent;
3108                                 $diffinfo{'to_file'}   = $file_name;
3109                         } else { # assume not renamed
3110                                 $diffinfo{'status'} = '1';
3111                                 $diffinfo{'from_file'} = $file_name;
3112                                 $diffinfo{'to_file'}   = $file_name;
3113                         }
3114                 } else { # no filename given
3115                         $diffinfo{'status'} = '2';
3116                         $diffinfo{'from_file'} = $hash_parent;
3117                         $diffinfo{'to_file'}   = $hash;
3118                 }
3119
3120                 # non-textual hash id's can be cached
3121                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3122                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3123                         $expires = '+1d';
3124                 }
3125
3126                 # open patch output
3127                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3128                         or die_error(undef, "Open git-diff failed");
3129         } else  {
3130                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3131                         unless %diffinfo;
3132         }
3133
3134         # header
3135         if ($format eq 'html') {
3136                 my $formats_nav =
3137                         $cgi->a({-href => href(action=>"blobdiff_plain",
3138                                                hash=>$hash, hash_parent=>$hash_parent,
3139                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3140                                                file_name=>$file_name, file_parent=>$file_parent)},
3141                                 "raw");
3142                 git_header_html(undef, $expires);
3143                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3144                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3145                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3146                 } else {
3147                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3148                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3149                 }
3150                 if (defined $file_name) {
3151                         git_print_page_path($file_name, "blob", $hash_base);
3152                 } else {
3153                         print "<div class=\"page_path\"></div>\n";
3154                 }
3155
3156         } elsif ($format eq 'plain') {
3157                 print $cgi->header(
3158                         -type => 'text/plain',
3159                         -charset => 'utf-8',
3160                         -expires => $expires,
3161                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3162
3163                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3164
3165         } else {
3166                 die_error(undef, "Unknown blobdiff format");
3167         }
3168
3169         # patch
3170         if ($format eq 'html') {
3171                 print "<div class=\"page_body\">\n";
3172
3173                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3174                 close $fd;
3175
3176                 print "</div>\n"; # class="page_body"
3177                 git_footer_html();
3178
3179         } else {
3180                 while (my $line = <$fd>) {
3181                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3182                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3183
3184                         print $line;
3185
3186                         last if $line =~ m!^\+\+\+!;
3187                 }
3188                 local $/ = undef;
3189                 print <$fd>;
3190                 close $fd;
3191         }
3192 }
3193
3194 sub git_blobdiff_plain {
3195         git_blobdiff('plain');
3196 }
3197
3198 sub git_commitdiff {
3199         my $format = shift || 'html';
3200         my %co = parse_commit($hash);
3201         if (!%co) {
3202                 die_error(undef, "Unknown commit object");
3203         }
3204         if (!defined $hash_parent) {
3205                 $hash_parent = $co{'parent'} || '--root';
3206         }
3207
3208         # read commitdiff
3209         my $fd;
3210         my @difftree;
3211         if ($format eq 'html') {
3212                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3213                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3214                         or die_error(undef, "Open git-diff-tree failed");
3215
3216                 while (chomp(my $line = <$fd>)) {
3217                         # empty line ends raw part of diff-tree output
3218                         last unless $line;
3219                         push @difftree, $line;
3220                 }
3221
3222         } elsif ($format eq 'plain') {
3223                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3224                         '-p', $hash_parent, $hash
3225                         or die_error(undef, "Open git-diff-tree failed");
3226
3227         } else {
3228                 die_error(undef, "Unknown commitdiff format");
3229         }
3230
3231         # non-textual hash id's can be cached
3232         my $expires;
3233         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3234                 $expires = "+1d";
3235         }
3236
3237         # write commit message
3238         if ($format eq 'html') {
3239                 my $refs = git_get_references();
3240                 my $ref = format_ref_marker($refs, $co{'id'});
3241                 my $formats_nav =
3242                         $cgi->a({-href => href(action=>"commitdiff_plain",
3243                                                hash=>$hash, hash_parent=>$hash_parent)},
3244                                 "raw");
3245
3246                 git_header_html(undef, $expires);
3247                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3248                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3249                 git_print_authorship(\%co);
3250                 print "<div class=\"page_body\">\n";
3251                 print "<div class=\"log\">\n";
3252                 git_print_simplified_log($co{'comment'}, 1); # skip title
3253                 print "</div>\n"; # class="log"
3254
3255         } elsif ($format eq 'plain') {
3256                 my $refs = git_get_references("tags");
3257                 my $tagname = git_get_rev_name_tags($hash);
3258                 my $filename = basename($project) . "-$hash.patch";
3259
3260                 print $cgi->header(
3261                         -type => 'text/plain',
3262                         -charset => 'utf-8',
3263                         -expires => $expires,
3264                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3265                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3266                 print <<TEXT;
3267 From: $co{'author'}
3268 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3269 Subject: $co{'title'}
3270 TEXT
3271                 print "X-Git-Tag: $tagname\n" if $tagname;
3272                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3273
3274                 foreach my $line (@{$co{'comment'}}) {
3275                         print "$line\n";
3276                 }
3277                 print "---\n\n";
3278         }
3279
3280         # write patch
3281         if ($format eq 'html') {
3282                 git_difftree_body(\@difftree, $hash, $hash_parent);
3283                 print "<br/>\n";
3284
3285                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3286                 close $fd;
3287                 print "</div>\n"; # class="page_body"
3288                 git_footer_html();
3289
3290         } elsif ($format eq 'plain') {
3291                 local $/ = undef;
3292                 print <$fd>;
3293                 close $fd
3294                         or print "Reading git-diff-tree failed\n";
3295         }
3296 }
3297
3298 sub git_commitdiff_plain {
3299         git_commitdiff('plain');
3300 }
3301
3302 sub git_history {
3303         if (!defined $hash_base) {
3304                 $hash_base = git_get_head_hash($project);
3305         }
3306         if (!defined $page) {
3307                 $page = 0;
3308         }
3309         my $ftype;
3310         my %co = parse_commit($hash_base);
3311         if (!%co) {
3312                 die_error(undef, "Unknown commit object");
3313         }
3314
3315         my $refs = git_get_references();
3316         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3317
3318         if (!defined $hash && defined $file_name) {
3319                 $hash = git_get_hash_by_path($hash_base, $file_name);
3320         }
3321         if (defined $hash) {
3322                 $ftype = git_get_type($hash);
3323         }
3324
3325         open my $fd, "-|",
3326                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3327                         or die_error(undef, "Open git-rev-list-failed");
3328         my @revlist = map { chomp; $_ } <$fd>;
3329         close $fd
3330                 or die_error(undef, "Reading git-rev-list failed");
3331
3332         my $paging_nav = '';
3333         if ($page > 0) {
3334                 $paging_nav .=
3335                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3336                                                file_name=>$file_name)},
3337                                 "first");
3338                 $paging_nav .= " &sdot; " .
3339                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3340                                                file_name=>$file_name, page=>$page-1),
3341                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3342         } else {
3343                 $paging_nav .= "first";
3344                 $paging_nav .= " &sdot; prev";
3345         }
3346         if ($#revlist >= (100 * ($page+1)-1)) {
3347                 $paging_nav .= " &sdot; " .
3348                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3349                                                file_name=>$file_name, page=>$page+1),
3350                                  -accesskey => "n", -title => "Alt-n"}, "next");
3351         } else {
3352                 $paging_nav .= " &sdot; next";
3353         }
3354         my $next_link = '';
3355         if ($#revlist >= (100 * ($page+1)-1)) {
3356                 $next_link =
3357                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3358                                                file_name=>$file_name, page=>$page+1),
3359                                  -title => "Alt-n"}, "next");
3360         }
3361
3362         git_header_html();
3363         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3364         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3365         git_print_page_path($file_name, $ftype, $hash_base);
3366
3367         git_history_body(\@revlist, ($page * 100), $#revlist,
3368                          $refs, $hash_base, $ftype, $next_link);
3369
3370         git_footer_html();
3371 }
3372
3373 sub git_search {
3374         if (!defined $searchtext) {
3375                 die_error(undef, "Text field empty");
3376         }
3377         if (!defined $hash) {
3378                 $hash = git_get_head_hash($project);
3379         }
3380         my %co = parse_commit($hash);
3381         if (!%co) {
3382                 die_error(undef, "Unknown commit object");
3383         }
3384
3385         my $commit_search = 1;
3386         my $author_search = 0;
3387         my $committer_search = 0;
3388         my $pickaxe_search = 0;
3389         if ($searchtext =~ s/^author\\://i) {
3390                 $author_search = 1;
3391         } elsif ($searchtext =~ s/^committer\\://i) {
3392                 $committer_search = 1;
3393         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3394                 $commit_search = 0;
3395                 $pickaxe_search = 1;
3396
3397                 # pickaxe may take all resources of your box and run for several minutes
3398                 # with every query - so decide by yourself how public you make this feature
3399                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3400                 if (!$have_pickaxe) {
3401                         die_error('403 Permission denied', "Permission denied");
3402                 }
3403         }
3404         git_header_html();
3405         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3406         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3407
3408         print "<table cellspacing=\"0\">\n";
3409         my $alternate = 1;
3410         if ($commit_search) {
3411                 $/ = "\0";
3412                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3413                 while (my $commit_text = <$fd>) {
3414                         if (!grep m/$searchtext/i, $commit_text) {
3415                                 next;
3416                         }
3417                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3418                                 next;
3419                         }
3420                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3421                                 next;
3422                         }
3423                         my @commit_lines = split "\n", $commit_text;
3424                         my %co = parse_commit(undef, \@commit_lines);
3425                         if (!%co) {
3426                                 next;
3427                         }
3428                         if ($alternate) {
3429                                 print "<tr class=\"dark\">\n";
3430                         } else {
3431                                 print "<tr class=\"light\">\n";
3432                         }
3433                         $alternate ^= 1;
3434                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3435                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3436                               "<td>" .
3437                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3438                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3439                         my $comment = $co{'comment'};
3440                         foreach my $line (@$comment) {
3441                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3442                                         my $lead = esc_html($1) || "";
3443                                         $lead = chop_str($lead, 30, 10);
3444                                         my $match = esc_html($2) || "";
3445                                         my $trail = esc_html($3) || "";
3446                                         $trail = chop_str($trail, 30, 10);
3447                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3448                                         print chop_str($text, 80, 5) . "<br/>\n";
3449                                 }
3450                         }
3451                         print "</td>\n" .
3452                               "<td class=\"link\">" .
3453                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3454                               " | " .
3455                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3456                         print "</td>\n" .
3457                               "</tr>\n";
3458                 }
3459                 close $fd;
3460         }
3461
3462         if ($pickaxe_search) {
3463                 $/ = "\n";
3464                 my $git_command = git_cmd_str();
3465                 open my $fd, "-|", "$git_command rev-list $hash | " .
3466                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3467                 undef %co;
3468                 my @files;
3469                 while (my $line = <$fd>) {
3470                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3471                                 my %set;
3472                                 $set{'file'} = $6;
3473                                 $set{'from_id'} = $3;
3474                                 $set{'to_id'} = $4;
3475                                 $set{'id'} = $set{'to_id'};
3476                                 if ($set{'id'} =~ m/0{40}/) {
3477                                         $set{'id'} = $set{'from_id'};
3478                                 }
3479                                 if ($set{'id'} =~ m/0{40}/) {
3480                                         next;
3481                                 }
3482                                 push @files, \%set;
3483                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3484                                 if (%co) {
3485                                         if ($alternate) {
3486                                                 print "<tr class=\"dark\">\n";
3487                                         } else {
3488                                                 print "<tr class=\"light\">\n";
3489                                         }
3490                                         $alternate ^= 1;
3491                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3492                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3493                                               "<td>" .
3494                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3495                                                       -class => "list subject"},
3496                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3497                                         while (my $setref = shift @files) {
3498                                                 my %set = %$setref;
3499                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3500                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3501                                                               -class => "list"},
3502                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3503                                                       "<br/>\n";
3504                                         }
3505                                         print "</td>\n" .
3506                                               "<td class=\"link\">" .
3507                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3508                                               " | " .
3509                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3510                                         print "</td>\n" .
3511                                               "</tr>\n";
3512                                 }
3513                                 %co = parse_commit($1);
3514                         }
3515                 }
3516                 close $fd;
3517         }
3518         print "</table>\n";
3519         git_footer_html();
3520 }
3521
3522 sub git_shortlog {
3523         my $head = git_get_head_hash($project);
3524         if (!defined $hash) {
3525                 $hash = $head;
3526         }
3527         if (!defined $page) {
3528                 $page = 0;
3529         }
3530         my $refs = git_get_references();
3531
3532         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3533         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3534                 or die_error(undef, "Open git-rev-list failed");
3535         my @revlist = map { chomp; $_ } <$fd>;
3536         close $fd;
3537
3538         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3539         my $next_link = '';
3540         if ($#revlist >= (100 * ($page+1)-1)) {
3541                 $next_link =
3542                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3543                                  -title => "Alt-n"}, "next");
3544         }
3545
3546
3547         git_header_html();
3548         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3549         git_print_header_div('summary', $project);
3550
3551         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3552
3553         git_footer_html();
3554 }
3555
3556 ## ......................................................................
3557 ## feeds (RSS, OPML)
3558
3559 sub git_rss {
3560         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3561         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3562                 or die_error(undef, "Open git-rev-list failed");
3563         my @revlist = map { chomp; $_ } <$fd>;
3564         close $fd or die_error(undef, "Reading git-rev-list failed");
3565         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3566         print <<XML;
3567 <?xml version="1.0" encoding="utf-8"?>
3568 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3569 <channel>
3570 <title>$project $my_uri $my_url</title>
3571 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3572 <description>$project log</description>
3573 <language>en</language>
3574 XML
3575
3576         for (my $i = 0; $i <= $#revlist; $i++) {
3577                 my $commit = $revlist[$i];
3578                 my %co = parse_commit($commit);
3579                 # we read 150, we always show 30 and the ones more recent than 48 hours
3580                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3581                         last;
3582                 }
3583                 my %cd = parse_date($co{'committer_epoch'});
3584                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3585                         $co{'parent'}, $co{'id'}
3586                         or next;
3587                 my @difftree = map { chomp; $_ } <$fd>;
3588                 close $fd
3589                         or next;
3590                 print "<item>\n" .
3591                       "<title>" .
3592                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3593                       "</title>\n" .
3594                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3595                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3596                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3597                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3598                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3599                       "<content:encoded>" .
3600                       "<![CDATA[\n";
3601                 my $comment = $co{'comment'};
3602                 foreach my $line (@$comment) {
3603                         $line = to_utf8($line);
3604                         print "$line<br/>\n";
3605                 }
3606                 print "<br/>\n";
3607                 foreach my $line (@difftree) {
3608                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3609                                 next;
3610                         }
3611                         my $file = esc_html(unquote($7));
3612                         $file = to_utf8($file);
3613                         print "$file<br/>\n";
3614                 }
3615                 print "]]>\n" .
3616                       "</content:encoded>\n" .
3617                       "</item>\n";
3618         }
3619         print "</channel></rss>";
3620 }
3621
3622 sub git_opml {
3623         my @list = git_get_projects_list();
3624
3625         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3626         print <<XML;
3627 <?xml version="1.0" encoding="utf-8"?>
3628 <opml version="1.0">
3629 <head>
3630   <title>$site_name Git OPML Export</title>
3631 </head>
3632 <body>
3633 <outline text="git RSS feeds">
3634 XML
3635
3636         foreach my $pr (@list) {
3637                 my %proj = %$pr;
3638                 my $head = git_get_head_hash($proj{'path'});
3639                 if (!defined $head) {
3640                         next;
3641                 }
3642                 $git_dir = "$projectroot/$proj{'path'}";
3643                 my %co = parse_commit($head);
3644                 if (!%co) {
3645                         next;
3646                 }
3647
3648                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3649                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3650                 my $html = "$my_url?p=$proj{'path'};a=summary";
3651                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3652         }
3653         print <<XML;
3654 </outline>
3655 </body>
3656 </opml>
3657 XML
3658 }