gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  43
  44 # html text to include at home page
  45 our $home_text = "++GITWEB_HOMETEXT++";
  46
  47 # URI of default stylesheet
  48 our $stylesheet = "++GITWEB_CSS++";
  49 # URI of GIT logo
  50 our $logo = "++GITWEB_LOGO++";
  51 # URI of GIT favicon, assumed to be image/png type
  52 our $favicon = "++GITWEB_FAVICON++";
  53
  54 # source of projects list
  55 our $projects_list = "++GITWEB_LIST++";
  56
  57 # show repository only if this file exists
  58 # (only effective if this variable evaluates to true)
  59 our $export_ok = "++GITWEB_EXPORT_OK++";
  60
  61 # only allow viewing of repositories also shown on the overview page
  62 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  63
  64 # list of git base URLs used for URL to where fetch project from,
  65 # i.e. full URL is "$git_base_url/$project"
  66 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  67
  68 # default blob_plain mimetype and default charset for text/plain blob
  69 our $default_blob_plain_mimetype = 'text/plain';
  70 our $default_text_plain_charset  = undef;
  71
  72 # file to use for guessing MIME types before trying /etc/mime.types
  73 # (relative to the current git repository)
  74 our $mimetypes_file = undef;
  75
  76 # You define site-wide feature defaults here; override them with
  77 # $GITWEB_CONFIG as necessary.
  78 our %feature = (
  79         # feature => {
  80         #       'sub' => feature-sub (subroutine),
  81         #       'override' => allow-override (boolean),
  82         #       'default' => [ default options...] (array reference)}
  83         #
  84         # if feature is overridable (it means that allow-override has true value,
  85         # then feature-sub will be called with default options as parameters;
  86         # return value of feature-sub indicates if to enable specified feature
  87         #
  88         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  89
  90         'blame' => {
  91                 'sub' => \&feature_blame,
  92                 'override' => 0,
  93                 'default' => [0]},
  94
  95         'snapshot' => {
  96                 'sub' => \&feature_snapshot,
  97                 'override' => 0,
  98                 #         => [content-encoding, suffix, program]
  99                 'default' => ['x-gzip', 'gz', 'gzip']},
 100
 101         'pickaxe' => {
 102                 'sub' => \&feature_pickaxe,
 103                 'override' => 0,
 104                 'default' => [1]},
 105 );
 106
 107 sub gitweb_check_feature {
 108         my ($name) = @_;
 109         return unless exists $feature{$name};
 110         my ($sub, $override, @defaults) = (
 111                 $feature{$name}{'sub'},
 112                 $feature{$name}{'override'},
 113                 @{$feature{$name}{'default'}});
 114         if (!$override) { return @defaults; }
 115         return $sub->(@defaults);
 116 }
 117
 118 # To enable system wide have in $GITWEB_CONFIG
 119 # $feature{'blame'}{'default'} = [1];
 120 # To have project specific config enable override in $GITWEB_CONFIG
 121 # $feature{'blame'}{'override'} = 1;
 122 # and in project config gitweb.blame = 0|1;
 123
 124 sub feature_blame {
 125         my ($val) = git_get_project_config('blame', '--bool');
 126
 127         if ($val eq 'true') {
 128                 return 1;
 129         } elsif ($val eq 'false') {
 130                 return 0;
 131         }
 132
 133         return $_[0];
 134 }
 135
 136 # To disable system wide have in $GITWEB_CONFIG
 137 # $feature{'snapshot'}{'default'} = [undef];
 138 # To have project specific config enable override in $GITWEB_CONFIG
 139 # $feature{'blame'}{'override'} = 1;
 140 # and in project config  gitweb.snapshot = none|gzip|bzip2
 141
 142 sub feature_snapshot {
 143         my ($ctype, $suffix, $command) = @_;
 144
 145         my ($val) = git_get_project_config('snapshot');
 146
 147         if ($val eq 'gzip') {
 148                 return ('x-gzip', 'gz', 'gzip');
 149         } elsif ($val eq 'bzip2') {
 150                 return ('x-bzip2', 'bz2', 'bzip2');
 151         } elsif ($val eq 'none') {
 152                 return ();
 153         }
 154
 155         return ($ctype, $suffix, $command);
 156 }
 157
 158 sub gitweb_have_snapshot {
 159         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 160         my $have_snapshot = (defined $ctype && defined $suffix);
 161
 162         return $have_snapshot;
 163 }
 164
 165 # To enable system wide have in $GITWEB_CONFIG
 166 # $feature{'pickaxe'}{'default'} = [1];
 167 # To have project specific config enable override in $GITWEB_CONFIG
 168 # $feature{'pickaxe'}{'override'} = 1;
 169 # and in project config gitweb.pickaxe = 0|1;
 170
 171 sub feature_pickaxe {
 172         my ($val) = git_get_project_config('pickaxe', '--bool');
 173
 174         if ($val eq 'true') {
 175                 return (1);
 176         } elsif ($val eq 'false') {
 177                 return (0);
 178         }
 179
 180         return ($_[0]);
 181 }
 182
 183 # rename detection options for git-diff and git-diff-tree
 184 # - default is '-M', with the cost proportional to
 185 #   (number of removed files) * (number of new files).
 186 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 187 #   (number of changed files + number of removed files) * (number of new files)
 188 # - even more costly is '-C', '--find-copies-harder' with cost
 189 #   (number of files in the original tree) * (number of new files)
 190 # - one might want to include '-B' option, e.g. '-B', '-M'
 191 our @diff_opts = ('-M'); # taken from git_commit
 192
 193 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 194 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 195
 196 # version of the core git binary
 197 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 198
 199 $projects_list ||= $projectroot;
 200
 201 # ======================================================================
 202 # input validation and dispatch
 203 our $action = $cgi->param('a');
 204 if (defined $action) {
 205         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 206                 die_error(undef, "Invalid action parameter");
 207         }
 208 }
 209
 210 # parameters which are pathnames
 211 our $project = $cgi->param('p');
 212 if (defined $project) {
 213         if (!validate_pathname($project) ||
 214             !(-d "$projectroot/$project") ||
 215             !(-e "$projectroot/$project/HEAD") ||
 216             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 217             ($strict_export && !project_in_list($project))) {
 218                 undef $project;
 219                 die_error(undef, "No such project");
 220         }
 221 }
 222
 223 our $file_name = $cgi->param('f');
 224 if (defined $file_name) {
 225         if (!validate_pathname($file_name)) {
 226                 die_error(undef, "Invalid file parameter");
 227         }
 228 }
 229
 230 our $file_parent = $cgi->param('fp');
 231 if (defined $file_parent) {
 232         if (!validate_pathname($file_parent)) {
 233                 die_error(undef, "Invalid file parent parameter");
 234         }
 235 }
 236
 237 # parameters which are refnames
 238 our $hash = $cgi->param('h');
 239 if (defined $hash) {
 240         if (!validate_refname($hash)) {
 241                 die_error(undef, "Invalid hash parameter");
 242         }
 243 }
 244
 245 our $hash_parent = $cgi->param('hp');
 246 if (defined $hash_parent) {
 247         if (!validate_refname($hash_parent)) {
 248                 die_error(undef, "Invalid hash parent parameter");
 249         }
 250 }
 251
 252 our $hash_base = $cgi->param('hb');
 253 if (defined $hash_base) {
 254         if (!validate_refname($hash_base)) {
 255                 die_error(undef, "Invalid hash base parameter");
 256         }
 257 }
 258
 259 our $hash_parent_base = $cgi->param('hpb');
 260 if (defined $hash_parent_base) {
 261         if (!validate_refname($hash_parent_base)) {
 262                 die_error(undef, "Invalid hash parent base parameter");
 263         }
 264 }
 265
 266 # other parameters
 267 our $page = $cgi->param('pg');
 268 if (defined $page) {
 269         if ($page =~ m/[^0-9]/) {
 270                 die_error(undef, "Invalid page parameter");
 271         }
 272 }
 273
 274 our $searchtext = $cgi->param('s');
 275 if (defined $searchtext) {
 276         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 277                 die_error(undef, "Invalid search parameter");
 278         }
 279         $searchtext = quotemeta $searchtext;
 280 }
 281
 282 # now read PATH_INFO and use it as alternative to parameters
 283 sub evaluate_path_info {
 284         return if defined $project;
 285         my $path_info = $ENV{"PATH_INFO"};
 286         return if !$path_info;
 287         $path_info =~ s,^/+,,;
 288         return if !$path_info;
 289         # find which part of PATH_INFO is project
 290         $project = $path_info;
 291         $project =~ s,/+$,,;
 292         while ($project && !-e "$projectroot/$project/HEAD") {
 293                 $project =~ s,/*[^/]*$,,;
 294         }
 295         # validate project
 296         $project = validate_pathname($project);
 297         if (!$project ||
 298             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 299             ($strict_export && !project_in_list($project))) {
 300                 undef $project;
 301                 return;
 302         }
 303         # do not change any parameters if an action is given using the query string
 304         return if $action;
 305         $path_info =~ s,^$project/*,,;
 306         my ($refname, $pathname) = split(/:/, $path_info, 2);
 307         if (defined $pathname) {
 308                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 309                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 310                 $pathname =~ s,^/+,,;
 311                 if (!$pathname || substr($pathname, -1) eq "/") {
 312                         $action  ||= "tree";
 313                         $pathname =~ s,/$,,;
 314                 } else {
 315                         $action  ||= "blob_plain";
 316                 }
 317                 $hash_base ||= validate_refname($refname);
 318                 $file_name ||= validate_pathname($pathname);
 319         } elsif (defined $refname) {
 320                 # we got "project.git/branch"
 321                 $action ||= "shortlog";
 322                 $hash   ||= validate_refname($refname);
 323         }
 324 }
 325 evaluate_path_info();
 326
 327 # path to the current git repository
 328 our $git_dir;
 329 $git_dir = "$projectroot/$project" if $project;
 330
 331 # dispatch
 332 my %actions = (
 333         "blame" => \&git_blame2,
 334         "blobdiff" => \&git_blobdiff,
 335         "blobdiff_plain" => \&git_blobdiff_plain,
 336         "blob" => \&git_blob,
 337         "blob_plain" => \&git_blob_plain,
 338         "commitdiff" => \&git_commitdiff,
 339         "commitdiff_plain" => \&git_commitdiff_plain,
 340         "commit" => \&git_commit,
 341         "heads" => \&git_heads,
 342         "history" => \&git_history,
 343         "log" => \&git_log,
 344         "rss" => \&git_rss,
 345         "search" => \&git_search,
 346         "shortlog" => \&git_shortlog,
 347         "summary" => \&git_summary,
 348         "tag" => \&git_tag,
 349         "tags" => \&git_tags,
 350         "tree" => \&git_tree,
 351         "snapshot" => \&git_snapshot,
 352         # those below don't need $project
 353         "opml" => \&git_opml,
 354         "project_list" => \&git_project_list,
 355         "project_index" => \&git_project_index,
 356 );
 357
 358 if (defined $project) {
 359         $action ||= 'summary';
 360 } else {
 361         $action ||= 'project_list';
 362 }
 363 if (!defined($actions{$action})) {
 364         die_error(undef, "Unknown action");
 365 }
 366 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 367     !$project) {
 368         die_error(undef, "Project needed");
 369 }
 370 $actions{$action}->();
 371 exit;
 372
 373 ## ======================================================================
 374 ## action links
 375
 376 sub href(%) {
 377         my %params = @_;
 378
 379         my @mapping = (
 380                 project => "p",
 381                 action => "a",
 382                 file_name => "f",
 383                 file_parent => "fp",
 384                 hash => "h",
 385                 hash_parent => "hp",
 386                 hash_base => "hb",
 387                 hash_parent_base => "hpb",
 388                 page => "pg",
 389                 order => "o",
 390                 searchtext => "s",
 391         );
 392         my %mapping = @mapping;
 393
 394         $params{'project'} = $project unless exists $params{'project'};
 395
 396         my @result = ();
 397         for (my $i = 0; $i < @mapping; $i += 2) {
 398                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 399                 if (defined $params{$name}) {
 400                         push @result, $symbol . "=" . esc_param($params{$name});
 401                 }
 402         }
 403         return "$my_uri?" . join(';', @result);
 404 }
 405
 406
 407 ## ======================================================================
 408 ## validation, quoting/unquoting and escaping
 409
 410 sub validate_pathname {
 411         my $input = shift || return undef;
 412
 413         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 414         # at the beginning, at the end, and between slashes.
 415         # also this catches doubled slashes
 416         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 417                 return undef;
 418         }
 419         # no null characters
 420         if ($input =~ m!\0!) {
 421                 return undef;
 422         }
 423         return $input;
 424 }
 425
 426 sub validate_refname {
 427         my $input = shift || return undef;
 428
 429         # textual hashes are O.K.
 430         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 431                 return $input;
 432         }
 433         # it must be correct pathname
 434         $input = validate_pathname($input)
 435                 or return undef;
 436         # restrictions on ref name according to git-check-ref-format
 437         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 438                 return undef;
 439         }
 440         return $input;
 441 }
 442
 443 # quote unsafe chars, but keep the slash, even when it's not
 444 # correct, but quoted slashes look too horrible in bookmarks
 445 sub esc_param {
 446         my $str = shift;
 447         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 448         $str =~ s/\+/%2B/g;
 449         $str =~ s/ /\+/g;
 450         return $str;
 451 }
 452
 453 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 454 sub esc_url {
 455         my $str = shift;
 456         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 457         $str =~ s/\+/%2B/g;
 458         $str =~ s/ /\+/g;
 459         return $str;
 460 }
 461
 462 # replace invalid utf8 character with SUBSTITUTION sequence
 463 sub esc_html {
 464         my $str = shift;
 465         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 466         $str = escapeHTML($str);
 467         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 468         return $str;
 469 }
 470
 471 # git may return quoted and escaped filenames
 472 sub unquote {
 473         my $str = shift;
 474         if ($str =~ m/^"(.*)"$/) {
 475                 $str = $1;
 476                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 477         }
 478         return $str;
 479 }
 480
 481 # escape tabs (convert tabs to spaces)
 482 sub untabify {
 483         my $line = shift;
 484
 485         while ((my $pos = index($line, "\t")) != -1) {
 486                 if (my $count = (8 - ($pos % 8))) {
 487                         my $spaces = ' ' x $count;
 488                         $line =~ s/\t/$spaces/;
 489                 }
 490         }
 491
 492         return $line;
 493 }
 494
 495 sub project_in_list {
 496         my $project = shift;
 497         my @list = git_get_projects_list();
 498         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 499 }
 500
 501 ## ----------------------------------------------------------------------
 502 ## HTML aware string manipulation
 503
 504 sub chop_str {
 505         my $str = shift;
 506         my $len = shift;
 507         my $add_len = shift || 10;
 508
 509         # allow only $len chars, but don't cut a word if it would fit in $add_len
 510         # if it doesn't fit, cut it if it's still longer than the dots we would add
 511         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 512         my $body = $1;
 513         my $tail = $2;
 514         if (length($tail) > 4) {
 515                 $tail = " ...";
 516                 $body =~ s/&[^;]*$//; # remove chopped character entities
 517         }
 518         return "$body$tail";
 519 }
 520
 521 ## ----------------------------------------------------------------------
 522 ## functions returning short strings
 523
 524 # CSS class for given age value (in seconds)
 525 sub age_class {
 526         my $age = shift;
 527
 528         if ($age < 60*60*2) {
 529                 return "age0";
 530         } elsif ($age < 60*60*24*2) {
 531                 return "age1";
 532         } else {
 533                 return "age2";
 534         }
 535 }
 536
 537 # convert age in seconds to "nn units ago" string
 538 sub age_string {
 539         my $age = shift;
 540         my $age_str;
 541
 542         if ($age > 60*60*24*365*2) {
 543                 $age_str = (int $age/60/60/24/365);
 544                 $age_str .= " years ago";
 545         } elsif ($age > 60*60*24*(365/12)*2) {
 546                 $age_str = int $age/60/60/24/(365/12);
 547                 $age_str .= " months ago";
 548         } elsif ($age > 60*60*24*7*2) {
 549                 $age_str = int $age/60/60/24/7;
 550                 $age_str .= " weeks ago";
 551         } elsif ($age > 60*60*24*2) {
 552                 $age_str = int $age/60/60/24;
 553                 $age_str .= " days ago";
 554         } elsif ($age > 60*60*2) {
 555                 $age_str = int $age/60/60;
 556                 $age_str .= " hours ago";
 557         } elsif ($age > 60*2) {
 558                 $age_str = int $age/60;
 559                 $age_str .= " min ago";
 560         } elsif ($age > 2) {
 561                 $age_str = int $age;
 562                 $age_str .= " sec ago";
 563         } else {
 564                 $age_str .= " right now";
 565         }
 566         return $age_str;
 567 }
 568
 569 # convert file mode in octal to symbolic file mode string
 570 sub mode_str {
 571         my $mode = oct shift;
 572
 573         if (S_ISDIR($mode & S_IFMT)) {
 574                 return 'drwxr-xr-x';
 575         } elsif (S_ISLNK($mode)) {
 576                 return 'lrwxrwxrwx';
 577         } elsif (S_ISREG($mode)) {
 578                 # git cares only about the executable bit
 579                 if ($mode & S_IXUSR) {
 580                         return '-rwxr-xr-x';
 581                 } else {
 582                         return '-rw-r--r--';
 583                 };
 584         } else {
 585                 return '----------';
 586         }
 587 }
 588
 589 # convert file mode in octal to file type string
 590 sub file_type {
 591         my $mode = shift;
 592
 593         if ($mode !~ m/^[0-7]+$/) {
 594                 return $mode;
 595         } else {
 596                 $mode = oct $mode;
 597         }
 598
 599         if (S_ISDIR($mode & S_IFMT)) {
 600                 return "directory";
 601         } elsif (S_ISLNK($mode)) {
 602                 return "symlink";
 603         } elsif (S_ISREG($mode)) {
 604                 return "file";
 605         } else {
 606                 return "unknown";
 607         }
 608 }
 609
 610 ## ----------------------------------------------------------------------
 611 ## functions returning short HTML fragments, or transforming HTML fragments
 612 ## which don't beling to other sections
 613
 614 # format line of commit message or tag comment
 615 sub format_log_line_html {
 616         my $line = shift;
 617
 618         $line = esc_html($line);
 619         $line =~ s/ /&nbsp;/g;
 620         if ($line =~ m/([0-9a-fA-F]{40})/) {
 621                 my $hash_text = $1;
 622                 if (git_get_type($hash_text) eq "commit") {
 623                         my $link =
 624                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 625                                         -class => "text"}, $hash_text);
 626                         $line =~ s/$hash_text/$link/;
 627                 }
 628         }
 629         return $line;
 630 }
 631
 632 # format marker of refs pointing to given object
 633 sub format_ref_marker {
 634         my ($refs, $id) = @_;
 635         my $markers = '';
 636
 637         if (defined $refs->{$id}) {
 638                 foreach my $ref (@{$refs->{$id}}) {
 639                         my ($type, $name) = qw();
 640                         # e.g. tags/v2.6.11 or heads/next
 641                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 642                                 $type = $1;
 643                                 $name = $2;
 644                         } else {
 645                                 $type = "ref";
 646                                 $name = $ref;
 647                         }
 648
 649                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 650                 }
 651         }
 652
 653         if ($markers) {
 654                 return ' <span class="refs">'. $markers . '</span>';
 655         } else {
 656                 return "";
 657         }
 658 }
 659
 660 # format, perhaps shortened and with markers, title line
 661 sub format_subject_html {
 662         my ($long, $short, $href, $extra) = @_;
 663         $extra = '' unless defined($extra);
 664
 665         if (length($short) < length($long)) {
 666                 return $cgi->a({-href => $href, -class => "list subject",
 667                                 -title => decode("utf8", $long, Encode::FB_DEFAULT)},
 668                        esc_html($short) . $extra);
 669         } else {
 670                 return $cgi->a({-href => $href, -class => "list subject"},
 671                        esc_html($long)  . $extra);
 672         }
 673 }
 674
 675 sub format_diff_line {
 676         my $line = shift;
 677         my $char = substr($line, 0, 1);
 678         my $diff_class = "";
 679
 680         chomp $line;
 681
 682         if ($char eq '+') {
 683                 $diff_class = " add";
 684         } elsif ($char eq "-") {
 685                 $diff_class = " rem";
 686         } elsif ($char eq "@") {
 687                 $diff_class = " chunk_header";
 688         } elsif ($char eq "\\") {
 689                 $diff_class = " incomplete";
 690         }
 691         $line = untabify($line);
 692         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 693 }
 694
 695 ## ----------------------------------------------------------------------
 696 ## git utility subroutines, invoking git commands
 697
 698 # returns path to the core git executable and the --git-dir parameter as list
 699 sub git_cmd {
 700         return $GIT, '--git-dir='.$git_dir;
 701 }
 702
 703 # returns path to the core git executable and the --git-dir parameter as string
 704 sub git_cmd_str {
 705         return join(' ', git_cmd());
 706 }
 707
 708 # get HEAD ref of given project as hash
 709 sub git_get_head_hash {
 710         my $project = shift;
 711         my $o_git_dir = $git_dir;
 712         my $retval = undef;
 713         $git_dir = "$projectroot/$project";
 714         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 715                 my $head = <$fd>;
 716                 close $fd;
 717                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 718                         $retval = $1;
 719                 }
 720         }
 721         if (defined $o_git_dir) {
 722                 $git_dir = $o_git_dir;
 723         }
 724         return $retval;
 725 }
 726
 727 # get type of given object
 728 sub git_get_type {
 729         my $hash = shift;
 730
 731         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 732         my $type = <$fd>;
 733         close $fd or return;
 734         chomp $type;
 735         return $type;
 736 }
 737
 738 sub git_get_project_config {
 739         my ($key, $type) = @_;
 740
 741         return unless ($key);
 742         $key =~ s/^gitweb\.//;
 743         return if ($key =~ m/\W/);
 744
 745         my @x = (git_cmd(), 'repo-config');
 746         if (defined $type) { push @x, $type; }
 747         push @x, "--get";
 748         push @x, "gitweb.$key";
 749         my $val = qx(@x);
 750         chomp $val;
 751         return ($val);
 752 }
 753
 754 # get hash of given path at given ref
 755 sub git_get_hash_by_path {
 756         my $base = shift;
 757         my $path = shift || return undef;
 758         my $type = shift;
 759
 760         $path =~ s,/+$,,;
 761
 762         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 763                 or die_error(undef, "Open git-ls-tree failed");
 764         my $line = <$fd>;
 765         close $fd or return undef;
 766
 767         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 768         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 769         if (defined $type && $type ne $2) {
 770                 # type doesn't match
 771                 return undef;
 772         }
 773         return $3;
 774 }
 775
 776 ## ......................................................................
 777 ## git utility functions, directly accessing git repository
 778
 779 sub git_get_project_description {
 780         my $path = shift;
 781
 782         open my $fd, "$projectroot/$path/description" or return undef;
 783         my $descr = <$fd>;
 784         close $fd;
 785         chomp $descr;
 786         return $descr;
 787 }
 788
 789 sub git_get_project_url_list {
 790         my $path = shift;
 791
 792         open my $fd, "$projectroot/$path/cloneurl" or return;
 793         my @git_project_url_list = map { chomp; $_ } <$fd>;
 794         close $fd;
 795
 796         return wantarray ? @git_project_url_list : \@git_project_url_list;
 797 }
 798
 799 sub git_get_projects_list {
 800         my @list;
 801
 802         if (-d $projects_list) {
 803                 # search in directory
 804                 my $dir = $projects_list;
 805                 my $pfxlen = length("$dir");
 806
 807                 File::Find::find({
 808                         follow_fast => 1, # follow symbolic links
 809                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 810                         wanted => sub {
 811                                 # skip project-list toplevel, if we get it.
 812                                 return if (m!^[/.]$!);
 813                                 # only directories can be git repositories
 814                                 return unless (-d $_);
 815
 816                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 817                                 # we check related file in $projectroot
 818                                 if (-e "$projectroot/$subdir/HEAD" && (!$export_ok ||
 819                                     -e "$projectroot/$subdir/$export_ok")) {
 820                                         push @list, { path => $subdir };
 821                                         $File::Find::prune = 1;
 822                                 }
 823                         },
 824                 }, "$dir");
 825
 826         } elsif (-f $projects_list) {
 827                 # read from file(url-encoded):
 828                 # 'git%2Fgit.git Linus+Torvalds'
 829                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 830                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 831                 open my ($fd), $projects_list or return;
 832                 while (my $line = <$fd>) {
 833                         chomp $line;
 834                         my ($path, $owner) = split ' ', $line;
 835                         $path = unescape($path);
 836                         $owner = unescape($owner);
 837                         if (!defined $path) {
 838                                 next;
 839                         }
 840                         if (-e "$projectroot/$path/HEAD" && (!$export_ok ||
 841                             -e "$projectroot/$path/$export_ok")) {
 842                                 my $pr = {
 843                                         path => $path,
 844                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 845                                 };
 846                                 push @list, $pr
 847                         }
 848                 }
 849                 close $fd;
 850         }
 851         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 852         return @list;
 853 }
 854
 855 sub git_get_project_owner {
 856         my $project = shift;
 857         my $owner;
 858
 859         return undef unless $project;
 860
 861         # read from file (url-encoded):
 862         # 'git%2Fgit.git Linus+Torvalds'
 863         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 864         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 865         if (-f $projects_list) {
 866                 open (my $fd , $projects_list);
 867                 while (my $line = <$fd>) {
 868                         chomp $line;
 869                         my ($pr, $ow) = split ' ', $line;
 870                         $pr = unescape($pr);
 871                         $ow = unescape($ow);
 872                         if ($pr eq $project) {
 873                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 874                                 last;
 875                         }
 876                 }
 877                 close $fd;
 878         }
 879         if (!defined $owner) {
 880                 $owner = get_file_owner("$projectroot/$project");
 881         }
 882
 883         return $owner;
 884 }
 885
 886 sub git_get_references {
 887         my $type = shift || "";
 888         my %refs;
 889         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 890         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 891         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
 892                 or return;
 893
 894         while (my $line = <$fd>) {
 895                 chomp $line;
 896                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 897                         if (defined $refs{$1}) {
 898                                 push @{$refs{$1}}, $2;
 899                         } else {
 900                                 $refs{$1} = [ $2 ];
 901                         }
 902                 }
 903         }
 904         close $fd or return;
 905         return \%refs;
 906 }
 907
 908 sub git_get_rev_name_tags {
 909         my $hash = shift || return undef;
 910
 911         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 912                 or return;
 913         my $name_rev = <$fd>;
 914         close $fd;
 915
 916         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 917                 return $1;
 918         } else {
 919                 # catches also '$hash undefined' output
 920                 return undef;
 921         }
 922 }
 923
 924 ## ----------------------------------------------------------------------
 925 ## parse to hash functions
 926
 927 sub parse_date {
 928         my $epoch = shift;
 929         my $tz = shift || "-0000";
 930
 931         my %date;
 932         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 933         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 934         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 935         $date{'hour'} = $hour;
 936         $date{'minute'} = $min;
 937         $date{'mday'} = $mday;
 938         $date{'day'} = $days[$wday];
 939         $date{'month'} = $months[$mon];
 940         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 941                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 942         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 943                              $mday, $months[$mon], $hour ,$min;
 944
 945         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 946         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 947         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 948         $date{'hour_local'} = $hour;
 949         $date{'minute_local'} = $min;
 950         $date{'tz_local'} = $tz;
 951         return %date;
 952 }
 953
 954 sub parse_tag {
 955         my $tag_id = shift;
 956         my %tag;
 957         my @comment;
 958
 959         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 960         $tag{'id'} = $tag_id;
 961         while (my $line = <$fd>) {
 962                 chomp $line;
 963                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 964                         $tag{'object'} = $1;
 965                 } elsif ($line =~ m/^type (.+)$/) {
 966                         $tag{'type'} = $1;
 967                 } elsif ($line =~ m/^tag (.+)$/) {
 968                         $tag{'name'} = $1;
 969                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 970                         $tag{'author'} = $1;
 971                         $tag{'epoch'} = $2;
 972                         $tag{'tz'} = $3;
 973                 } elsif ($line =~ m/--BEGIN/) {
 974                         push @comment, $line;
 975                         last;
 976                 } elsif ($line eq "") {
 977                         last;
 978                 }
 979         }
 980         push @comment, <$fd>;
 981         $tag{'comment'} = \@comment;
 982         close $fd or return;
 983         if (!defined $tag{'name'}) {
 984                 return
 985         };
 986         return %tag
 987 }
 988
 989 sub parse_commit {
 990         my $commit_id = shift;
 991         my $commit_text = shift;
 992
 993         my @commit_lines;
 994         my %co;
 995
 996         if (defined $commit_text) {
 997                 @commit_lines = @$commit_text;
 998         } else {
 999                 $/ = "\0";
1000                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
1001                         or return;
1002                 @commit_lines = split '\n', <$fd>;
1003                 close $fd or return;
1004                 $/ = "\n";
1005                 pop @commit_lines;
1006         }
1007         my $header = shift @commit_lines;
1008         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1009                 return;
1010         }
1011         ($co{'id'}, my @parents) = split ' ', $header;
1012         $co{'parents'} = \@parents;
1013         $co{'parent'} = $parents[0];
1014         while (my $line = shift @commit_lines) {
1015                 last if $line eq "\n";
1016                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1017                         $co{'tree'} = $1;
1018                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1019                         $co{'author'} = $1;
1020                         $co{'author_epoch'} = $2;
1021                         $co{'author_tz'} = $3;
1022                         if ($co{'author'} =~ m/^([^<]+) </) {
1023                                 $co{'author_name'} = $1;
1024                         } else {
1025                                 $co{'author_name'} = $co{'author'};
1026                         }
1027                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1028                         $co{'committer'} = $1;
1029                         $co{'committer_epoch'} = $2;
1030                         $co{'committer_tz'} = $3;
1031                         $co{'committer_name'} = $co{'committer'};
1032                         $co{'committer_name'} =~ s/ <.*//;
1033                 }
1034         }
1035         if (!defined $co{'tree'}) {
1036                 return;
1037         };
1038
1039         foreach my $title (@commit_lines) {
1040                 $title =~ s/^    //;
1041                 if ($title ne "") {
1042                         $co{'title'} = chop_str($title, 80, 5);
1043                         # remove leading stuff of merges to make the interesting part visible
1044                         if (length($title) > 50) {
1045                                 $title =~ s/^Automatic //;
1046                                 $title =~ s/^merge (of|with) /Merge ... /i;
1047                                 if (length($title) > 50) {
1048                                         $title =~ s/(http|rsync):\/\///;
1049                                 }
1050                                 if (length($title) > 50) {
1051                                         $title =~ s/(master|www|rsync)\.//;
1052                                 }
1053                                 if (length($title) > 50) {
1054                                         $title =~ s/kernel.org:?//;
1055                                 }
1056                                 if (length($title) > 50) {
1057                                         $title =~ s/\/pub\/scm//;
1058                                 }
1059                         }
1060                         $co{'title_short'} = chop_str($title, 50, 5);
1061                         last;
1062                 }
1063         }
1064         # remove added spaces
1065         foreach my $line (@commit_lines) {
1066                 $line =~ s/^    //;
1067         }
1068         $co{'comment'} = \@commit_lines;
1069
1070         my $age = time - $co{'committer_epoch'};
1071         $co{'age'} = $age;
1072         $co{'age_string'} = age_string($age);
1073         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1074         if ($age > 60*60*24*7*2) {
1075                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1076                 $co{'age_string_age'} = $co{'age_string'};
1077         } else {
1078                 $co{'age_string_date'} = $co{'age_string'};
1079                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1080         }
1081         return %co;
1082 }
1083
1084 # parse ref from ref_file, given by ref_id, with given type
1085 sub parse_ref {
1086         my $ref_file = shift;
1087         my $ref_id = shift;
1088         my $type = shift || git_get_type($ref_id);
1089         my %ref_item;
1090
1091         $ref_item{'type'} = $type;
1092         $ref_item{'id'} = $ref_id;
1093         $ref_item{'epoch'} = 0;
1094         $ref_item{'age'} = "unknown";
1095         if ($type eq "tag") {
1096                 my %tag = parse_tag($ref_id);
1097                 $ref_item{'comment'} = $tag{'comment'};
1098                 if ($tag{'type'} eq "commit") {
1099                         my %co = parse_commit($tag{'object'});
1100                         $ref_item{'epoch'} = $co{'committer_epoch'};
1101                         $ref_item{'age'} = $co{'age_string'};
1102                 } elsif (defined($tag{'epoch'})) {
1103                         my $age = time - $tag{'epoch'};
1104                         $ref_item{'epoch'} = $tag{'epoch'};
1105                         $ref_item{'age'} = age_string($age);
1106                 }
1107                 $ref_item{'reftype'} = $tag{'type'};
1108                 $ref_item{'name'} = $tag{'name'};
1109                 $ref_item{'refid'} = $tag{'object'};
1110         } elsif ($type eq "commit"){
1111                 my %co = parse_commit($ref_id);
1112                 $ref_item{'reftype'} = "commit";
1113                 $ref_item{'name'} = $ref_file;
1114                 $ref_item{'title'} = $co{'title'};
1115                 $ref_item{'refid'} = $ref_id;
1116                 $ref_item{'epoch'} = $co{'committer_epoch'};
1117                 $ref_item{'age'} = $co{'age_string'};
1118         } else {
1119                 $ref_item{'reftype'} = $type;
1120                 $ref_item{'name'} = $ref_file;
1121                 $ref_item{'refid'} = $ref_id;
1122         }
1123
1124         return %ref_item;
1125 }
1126
1127 # parse line of git-diff-tree "raw" output
1128 sub parse_difftree_raw_line {
1129         my $line = shift;
1130         my %res;
1131
1132         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1133         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1134         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1135                 $res{'from_mode'} = $1;
1136                 $res{'to_mode'} = $2;
1137                 $res{'from_id'} = $3;
1138                 $res{'to_id'} = $4;
1139                 $res{'status'} = $5;
1140                 $res{'similarity'} = $6;
1141                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1142                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1143                 } else {
1144                         $res{'file'} = unquote($7);
1145                 }
1146         }
1147         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1148         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1149                 $res{'commit'} = $1;
1150         }
1151
1152         return wantarray ? %res : \%res;
1153 }
1154
1155 # parse line of git-ls-tree output
1156 sub parse_ls_tree_line ($;%) {
1157         my $line = shift;
1158         my %opts = @_;
1159         my %res;
1160
1161         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1162         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1163
1164         $res{'mode'} = $1;
1165         $res{'type'} = $2;
1166         $res{'hash'} = $3;
1167         if ($opts{'-z'}) {
1168                 $res{'name'} = $4;
1169         } else {
1170                 $res{'name'} = unquote($4);
1171         }
1172
1173         return wantarray ? %res : \%res;
1174 }
1175
1176 ## ......................................................................
1177 ## parse to array of hashes functions
1178
1179 sub git_get_refs_list {
1180         my $type = shift || "";
1181         my %refs;
1182         my @reflist;
1183
1184         my @refs;
1185         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1186                 or return;
1187         while (my $line = <$fd>) {
1188                 chomp $line;
1189                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?([^\^]+))(\^\{\})?$/) {
1190                         if (defined $refs{$1}) {
1191                                 push @{$refs{$1}}, $2;
1192                         } else {
1193                                 $refs{$1} = [ $2 ];
1194                         }
1195
1196                         if (! $4) { # unpeeled, direct reference
1197                                 push @refs, { hash => $1, name => $3 }; # without type
1198                         } elsif ($3 eq $refs[-1]{'name'}) {
1199                                 # most likely a tag is followed by its peeled
1200                                 # (deref) one, and when that happens we know the
1201                                 # previous one was of type 'tag'.
1202                                 $refs[-1]{'type'} = "tag";
1203                         }
1204                 }
1205         }
1206         close $fd;
1207
1208         foreach my $ref (@refs) {
1209                 my $ref_file = $ref->{'name'};
1210                 my $ref_id   = $ref->{'hash'};
1211
1212                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1213                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1214
1215                 push @reflist, \%ref_item;
1216         }
1217         # sort refs by age
1218         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1219         return (\@reflist, \%refs);
1220 }
1221
1222 ## ----------------------------------------------------------------------
1223 ## filesystem-related functions
1224
1225 sub get_file_owner {
1226         my $path = shift;
1227
1228         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1229         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1230         if (!defined $gcos) {
1231                 return undef;
1232         }
1233         my $owner = $gcos;
1234         $owner =~ s/[,;].*$//;
1235         return decode("utf8", $owner, Encode::FB_DEFAULT);
1236 }
1237
1238 ## ......................................................................
1239 ## mimetype related functions
1240
1241 sub mimetype_guess_file {
1242         my $filename = shift;
1243         my $mimemap = shift;
1244         -r $mimemap or return undef;
1245
1246         my %mimemap;
1247         open(MIME, $mimemap) or return undef;
1248         while (<MIME>) {
1249                 next if m/^#/; # skip comments
1250                 my ($mime, $exts) = split(/\t+/);
1251                 if (defined $exts) {
1252                         my @exts = split(/\s+/, $exts);
1253                         foreach my $ext (@exts) {
1254                                 $mimemap{$ext} = $mime;
1255                         }
1256                 }
1257         }
1258         close(MIME);
1259
1260         $filename =~ /\.([^.]*)$/;
1261         return $mimemap{$1};
1262 }
1263
1264 sub mimetype_guess {
1265         my $filename = shift;
1266         my $mime;
1267         $filename =~ /\./ or return undef;
1268
1269         if ($mimetypes_file) {
1270                 my $file = $mimetypes_file;
1271                 if ($file !~ m!^/!) { # if it is relative path
1272                         # it is relative to project
1273                         $file = "$projectroot/$project/$file";
1274                 }
1275                 $mime = mimetype_guess_file($filename, $file);
1276         }
1277         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1278         return $mime;
1279 }
1280
1281 sub blob_mimetype {
1282         my $fd = shift;
1283         my $filename = shift;
1284
1285         if ($filename) {
1286                 my $mime = mimetype_guess($filename);
1287                 $mime and return $mime;
1288         }
1289
1290         # just in case
1291         return $default_blob_plain_mimetype unless $fd;
1292
1293         if (-T $fd) {
1294                 return 'text/plain' .
1295                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1296         } elsif (! $filename) {
1297                 return 'application/octet-stream';
1298         } elsif ($filename =~ m/\.png$/i) {
1299                 return 'image/png';
1300         } elsif ($filename =~ m/\.gif$/i) {
1301                 return 'image/gif';
1302         } elsif ($filename =~ m/\.jpe?g$/i) {
1303                 return 'image/jpeg';
1304         } else {
1305                 return 'application/octet-stream';
1306         }
1307 }
1308
1309 ## ======================================================================
1310 ## functions printing HTML: header, footer, error page
1311
1312 sub git_header_html {
1313         my $status = shift || "200 OK";
1314         my $expires = shift;
1315
1316         my $title = "$site_name git";
1317         if (defined $project) {
1318                 $title .= " - $project";
1319                 if (defined $action) {
1320                         $title .= "/$action";
1321                         if (defined $file_name) {
1322                                 $title .= " - " . esc_html($file_name);
1323                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1324                                         $title .= "/";
1325                                 }
1326                         }
1327                 }
1328         }
1329         my $content_type;
1330         # require explicit support from the UA if we are to send the page as
1331         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1332         # we have to do this because MSIE sometimes globs '*/*', pretending to
1333         # support xhtml+xml but choking when it gets what it asked for.
1334         if (defined $cgi->http('HTTP_ACCEPT') &&
1335             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1336             $cgi->Accept('application/xhtml+xml') != 0) {
1337                 $content_type = 'application/xhtml+xml';
1338         } else {
1339                 $content_type = 'text/html';
1340         }
1341         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1342                            -status=> $status, -expires => $expires);
1343         print <<EOF;
1344 <?xml version="1.0" encoding="utf-8"?>
1345 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1346 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1347 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1348 <!-- git core binaries version $git_version -->
1349 <head>
1350 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1351 <meta name="generator" content="gitweb/$version git/$git_version"/>
1352 <meta name="robots" content="index, nofollow"/>
1353 <title>$title</title>
1354 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1355 EOF
1356         if (defined $project) {
1357                 printf('<link rel="alternate" title="%s log" '.
1358                        'href="%s" type="application/rss+xml"/>'."\n",
1359                        esc_param($project), href(action=>"rss"));
1360         } else {
1361                 printf('<link rel="alternate" title="%s projects list" '.
1362                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1363                        $site_name, href(project=>undef, action=>"project_index"));
1364                 printf('<link rel="alternate" title="%s projects logs" '.
1365                        'href="%s" type="text/x-opml"/>'."\n",
1366                        $site_name, href(project=>undef, action=>"opml"));
1367         }
1368         if (defined $favicon) {
1369                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1370         }
1371
1372         print "</head>\n" .
1373               "<body>\n" .
1374               "<div class=\"page_header\">\n" .
1375               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1376               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1377               "</a>\n";
1378         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1379         if (defined $project) {
1380                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1381                 if (defined $action) {
1382                         print " / $action";
1383                 }
1384                 print "\n";
1385                 if (!defined $searchtext) {
1386                         $searchtext = "";
1387                 }
1388                 my $search_hash;
1389                 if (defined $hash_base) {
1390                         $search_hash = $hash_base;
1391                 } elsif (defined $hash) {
1392                         $search_hash = $hash;
1393                 } else {
1394                         $search_hash = "HEAD";
1395                 }
1396                 $cgi->param("a", "search");
1397                 $cgi->param("h", $search_hash);
1398                 print $cgi->startform(-method => "get", -action => $my_uri) .
1399                       "<div class=\"search\">\n" .
1400                       $cgi->hidden(-name => "p") . "\n" .
1401                       $cgi->hidden(-name => "a") . "\n" .
1402                       $cgi->hidden(-name => "h") . "\n" .
1403                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1404                       "</div>" .
1405                       $cgi->end_form() . "\n";
1406         }
1407         print "</div>\n";
1408 }
1409
1410 sub git_footer_html {
1411         print "<div class=\"page_footer\">\n";
1412         if (defined $project) {
1413                 my $descr = git_get_project_description($project);
1414                 if (defined $descr) {
1415                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1416                 }
1417                 print $cgi->a({-href => href(action=>"rss"),
1418                               -class => "rss_logo"}, "RSS") . "\n";
1419         } else {
1420                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1421                               -class => "rss_logo"}, "OPML") . " ";
1422                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1423                               -class => "rss_logo"}, "TXT") . "\n";
1424         }
1425         print "</div>\n" .
1426               "</body>\n" .
1427               "</html>";
1428 }
1429
1430 sub die_error {
1431         my $status = shift || "403 Forbidden";
1432         my $error = shift || "Malformed query, file missing or permission denied";
1433
1434         git_header_html($status);
1435         print <<EOF;
1436 <div class="page_body">
1437 <br /><br />
1438 $status - $error
1439 <br />
1440 </div>
1441 EOF
1442         git_footer_html();
1443         exit;
1444 }
1445
1446 ## ----------------------------------------------------------------------
1447 ## functions printing or outputting HTML: navigation
1448
1449 sub git_print_page_nav {
1450         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1451         $extra = '' if !defined $extra; # pager or formats
1452
1453         my @navs = qw(summary shortlog log commit commitdiff tree);
1454         if ($suppress) {
1455                 @navs = grep { $_ ne $suppress } @navs;
1456         }
1457
1458         my %arg = map { $_ => {action=>$_} } @navs;
1459         if (defined $head) {
1460                 for (qw(commit commitdiff)) {
1461                         $arg{$_}{hash} = $head;
1462                 }
1463                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1464                         for (qw(shortlog log)) {
1465                                 $arg{$_}{hash} = $head;
1466                         }
1467                 }
1468         }
1469         $arg{tree}{hash} = $treehead if defined $treehead;
1470         $arg{tree}{hash_base} = $treebase if defined $treebase;
1471
1472         print "<div class=\"page_nav\">\n" .
1473                 (join " | ",
1474                  map { $_ eq $current ?
1475                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1476                  } @navs);
1477         print "<br/>\n$extra<br/>\n" .
1478               "</div>\n";
1479 }
1480
1481 sub format_paging_nav {
1482         my ($action, $hash, $head, $page, $nrevs) = @_;
1483         my $paging_nav;
1484
1485
1486         if ($hash ne $head || $page) {
1487                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1488         } else {
1489                 $paging_nav .= "HEAD";
1490         }
1491
1492         if ($page > 0) {
1493                 $paging_nav .= " &sdot; " .
1494                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1495                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1496         } else {
1497                 $paging_nav .= " &sdot; prev";
1498         }
1499
1500         if ($nrevs >= (100 * ($page+1)-1)) {
1501                 $paging_nav .= " &sdot; " .
1502                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1503                                  -accesskey => "n", -title => "Alt-n"}, "next");
1504         } else {
1505                 $paging_nav .= " &sdot; next";
1506         }
1507
1508         return $paging_nav;
1509 }
1510
1511 ## ......................................................................
1512 ## functions printing or outputting HTML: div
1513
1514 sub git_print_header_div {
1515         my ($action, $title, $hash, $hash_base) = @_;
1516         my %args = ();
1517
1518         $args{action} = $action;
1519         $args{hash} = $hash if $hash;
1520         $args{hash_base} = $hash_base if $hash_base;
1521
1522         print "<div class=\"header\">\n" .
1523               $cgi->a({-href => href(%args), -class => "title"},
1524               $title ? $title : $action) .
1525               "\n</div>\n";
1526 }
1527
1528 #sub git_print_authorship (\%) {
1529 sub git_print_authorship {
1530         my $co = shift;
1531
1532         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1533         print "<div class=\"author_date\">" .
1534               esc_html($co->{'author_name'}) .
1535               " [$ad{'rfc2822'}";
1536         if ($ad{'hour_local'} < 6) {
1537                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1538                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1539         } else {
1540                 printf(" (%02d:%02d %s)",
1541                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1542         }
1543         print "]</div>\n";
1544 }
1545
1546 sub git_print_page_path {
1547         my $name = shift;
1548         my $type = shift;
1549         my $hb = shift;
1550
1551         if (!defined $name) {
1552                 print "<div class=\"page_path\">/</div>\n";
1553         } else {
1554                 my @dirname = split '/', $name;
1555                 my $basename = pop @dirname;
1556                 my $fullname = '';
1557
1558                 print "<div class=\"page_path\">";
1559                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1560                               -title => 'tree root'}, "[$project]");
1561                 print " / ";
1562                 foreach my $dir (@dirname) {
1563                         $fullname .= ($fullname ? '/' : '') . $dir;
1564                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1565                                                      hash_base=>$hb),
1566                                       -title => $fullname}, esc_html($dir));
1567                         print " / ";
1568                 }
1569                 if (defined $type && $type eq 'blob') {
1570                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1571                                                      hash_base=>$hb),
1572                                       -title => $name}, esc_html($basename));
1573                 } elsif (defined $type && $type eq 'tree') {
1574                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1575                                                      hash_base=>$hb),
1576                                       -title => $name}, esc_html($basename));
1577                 } else {
1578                         print esc_html($basename);
1579                 }
1580                 print "<br/></div>\n";
1581         }
1582 }
1583
1584 # sub git_print_log (\@;%) {
1585 sub git_print_log ($;%) {
1586         my $log = shift;
1587         my %opts = @_;
1588
1589         if ($opts{'-remove_title'}) {
1590                 # remove title, i.e. first line of log
1591                 shift @$log;
1592         }
1593         # remove leading empty lines
1594         while (defined $log->[0] && $log->[0] eq "") {
1595                 shift @$log;
1596         }
1597
1598         # print log
1599         my $signoff = 0;
1600         my $empty = 0;
1601         foreach my $line (@$log) {
1602                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1603                         $signoff = 1;
1604                         $empty = 0;
1605                         if (! $opts{'-remove_signoff'}) {
1606                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1607                                 next;
1608                         } else {
1609                                 # remove signoff lines
1610                                 next;
1611                         }
1612                 } else {
1613                         $signoff = 0;
1614                 }
1615
1616                 # print only one empty line
1617                 # do not print empty line after signoff
1618                 if ($line eq "") {
1619                         next if ($empty || $signoff);
1620                         $empty = 1;
1621                 } else {
1622                         $empty = 0;
1623                 }
1624
1625                 print format_log_line_html($line) . "<br/>\n";
1626         }
1627
1628         if ($opts{'-final_empty_line'}) {
1629                 # end with single empty line
1630                 print "<br/>\n" unless $empty;
1631         }
1632 }
1633
1634 sub git_print_simplified_log {
1635         my $log = shift;
1636         my $remove_title = shift;
1637
1638         git_print_log($log,
1639                 -final_empty_line=> 1,
1640                 -remove_title => $remove_title);
1641 }
1642
1643 # print tree entry (row of git_tree), but without encompassing <tr> element
1644 sub git_print_tree_entry {
1645         my ($t, $basedir, $hash_base, $have_blame) = @_;
1646
1647         my %base_key = ();
1648         $base_key{hash_base} = $hash_base if defined $hash_base;
1649
1650         # The format of a table row is: mode list link.  Where mode is
1651         # the mode of the entry, list is the name of the entry, an href,
1652         # and link is the action links of the entry.
1653
1654         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1655         if ($t->{'type'} eq "blob") {
1656                 print "<td class=\"list\">" .
1657                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1658                                                file_name=>"$basedir$t->{'name'}", %base_key),
1659                                  -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1660                 print "<td class=\"link\">";
1661                 if ($have_blame) {
1662                         print $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1663                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
1664                                       "blame");
1665                 }
1666                 if (defined $hash_base) {
1667                         if ($have_blame) {
1668                                 print " | ";
1669                         }
1670                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1671                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1672                                       "history");
1673                 }
1674                 print " | " .
1675                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1676                                                file_name=>"$basedir$t->{'name'}")},
1677                                 "raw");
1678                 print "</td>\n";
1679
1680         } elsif ($t->{'type'} eq "tree") {
1681                 print "<td class=\"list\">";
1682                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1683                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1684                               esc_html($t->{'name'}));
1685                 print "</td>\n";
1686                 print "<td class=\"link\">";
1687                 if (defined $hash_base) {
1688                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1689                                                      file_name=>"$basedir$t->{'name'}")},
1690                                       "history");
1691                 }
1692                 print "</td>\n";
1693         }
1694 }
1695
1696 ## ......................................................................
1697 ## functions printing large fragments of HTML
1698
1699 sub git_difftree_body {
1700         my ($difftree, $hash, $parent) = @_;
1701
1702         print "<div class=\"list_head\">\n";
1703         if ($#{$difftree} > 10) {
1704                 print(($#{$difftree} + 1) . " files changed:\n");
1705         }
1706         print "</div>\n";
1707
1708         print "<table class=\"diff_tree\">\n";
1709         my $alternate = 1;
1710         my $patchno = 0;
1711         foreach my $line (@{$difftree}) {
1712                 my %diff = parse_difftree_raw_line($line);
1713
1714                 if ($alternate) {
1715                         print "<tr class=\"dark\">\n";
1716                 } else {
1717                         print "<tr class=\"light\">\n";
1718                 }
1719                 $alternate ^= 1;
1720
1721                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1722                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1723                 if ($diff{'to_mode'} ne ('0' x 6)) {
1724                         $to_mode_oct = oct $diff{'to_mode'};
1725                         if (S_ISREG($to_mode_oct)) { # only for regular file
1726                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1727                         }
1728                         $to_file_type = file_type($diff{'to_mode'});
1729                 }
1730                 if ($diff{'from_mode'} ne ('0' x 6)) {
1731                         $from_mode_oct = oct $diff{'from_mode'};
1732                         if (S_ISREG($to_mode_oct)) { # only for regular file
1733                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1734                         }
1735                         $from_file_type = file_type($diff{'from_mode'});
1736                 }
1737
1738                 if ($diff{'status'} eq "A") { # created
1739                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1740                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1741                         $mode_chng   .= "]</span>";
1742                         print "<td>";
1743                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1744                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1745                                        -class => "list"}, esc_html($diff{'file'}));
1746                         print "</td>\n";
1747                         print "<td>$mode_chng</td>\n";
1748                         print "<td class=\"link\">";
1749                         if ($action eq 'commitdiff') {
1750                                 # link to patch
1751                                 $patchno++;
1752                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1753                         }
1754                         print "</td>\n";
1755
1756                 } elsif ($diff{'status'} eq "D") { # deleted
1757                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1758                         print "<td>";
1759                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1760                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1761                                        -class => "list"}, esc_html($diff{'file'}));
1762                         print "</td>\n";
1763                         print "<td>$mode_chng</td>\n";
1764                         print "<td class=\"link\">";
1765                         if ($action eq 'commitdiff') {
1766                                 # link to patch
1767                                 $patchno++;
1768                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1769                                 print " | ";
1770                         }
1771                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1772                                                      file_name=>$diff{'file'})},
1773                                       "blame") . " | ";
1774                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1775                                                      file_name=>$diff{'file'})},
1776                                       "history");
1777                         print "</td>\n";
1778
1779                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1780                         my $mode_chnge = "";
1781                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1782                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1783                                 if ($from_file_type != $to_file_type) {
1784                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1785                                 }
1786                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1787                                         if ($from_mode_str && $to_mode_str) {
1788                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1789                                         } elsif ($to_mode_str) {
1790                                                 $mode_chnge .= " mode: $to_mode_str";
1791                                         }
1792                                 }
1793                                 $mode_chnge .= "]</span>\n";
1794                         }
1795                         print "<td>";
1796                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1797                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1798                                        -class => "list"}, esc_html($diff{'file'}));
1799                         print "</td>\n";
1800                         print "<td>$mode_chnge</td>\n";
1801                         print "<td class=\"link\">";
1802                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1803                                 if ($action eq 'commitdiff') {
1804                                         # link to patch
1805                                         $patchno++;
1806                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1807                                 } else {
1808                                         print $cgi->a({-href => href(action=>"blobdiff",
1809                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1810                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1811                                                                      file_name=>$diff{'file'})},
1812                                                       "diff");
1813                                 }
1814                                 print " | ";
1815                         }
1816                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
1817                                                      file_name=>$diff{'file'})},
1818                                       "blame") . " | ";
1819                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
1820                                                      file_name=>$diff{'file'})},
1821                                       "history");
1822                         print "</td>\n";
1823
1824                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1825                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1826                         my $nstatus = $status_name{$diff{'status'}};
1827                         my $mode_chng = "";
1828                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1829                                 # mode also for directories, so we cannot use $to_mode_str
1830                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1831                         }
1832                         print "<td>" .
1833                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1834                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1835                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1836                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1837                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1838                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1839                                       -class => "list"}, esc_html($diff{'from_file'})) .
1840                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1841                               "<td class=\"link\">";
1842                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1843                                 if ($action eq 'commitdiff') {
1844                                         # link to patch
1845                                         $patchno++;
1846                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1847                                 } else {
1848                                         print $cgi->a({-href => href(action=>"blobdiff",
1849                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1850                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1851                                                                      file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1852                                                       "diff");
1853                                 }
1854                                 print " | ";
1855                         }
1856                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1857                                                      file_name=>$diff{'from_file'})},
1858                                       "blame") . " | ";
1859                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1860                                                      file_name=>$diff{'from_file'})},
1861                                       "history");
1862                         print "</td>\n";
1863
1864                 } # we should not encounter Unmerged (U) or Unknown (X) status
1865                 print "</tr>\n";
1866         }
1867         print "</table>\n";
1868 }
1869
1870 sub git_patchset_body {
1871         my ($fd, $difftree, $hash, $hash_parent) = @_;
1872
1873         my $patch_idx = 0;
1874         my $in_header = 0;
1875         my $patch_found = 0;
1876         my $diffinfo;
1877
1878         print "<div class=\"patchset\">\n";
1879
1880         LINE:
1881         while (my $patch_line = <$fd>) {
1882                 chomp $patch_line;
1883
1884                 if ($patch_line =~ m/^diff /) { # "git diff" header
1885                         # beginning of patch (in patchset)
1886                         if ($patch_found) {
1887                                 # close previous patch
1888                                 print "</div>\n"; # class="patch"
1889                         } else {
1890                                 # first patch in patchset
1891                                 $patch_found = 1;
1892                         }
1893                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1894
1895                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1896                                 $diffinfo = $difftree->[$patch_idx];
1897                         } else {
1898                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1899                         }
1900                         $patch_idx++;
1901
1902                         # for now, no extended header, hence we skip empty patches
1903                         # companion to  next LINE if $in_header;
1904                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1905                                 $in_header = 1;
1906                                 next LINE;
1907                         }
1908
1909                         if ($diffinfo->{'status'} eq "A") { # added
1910                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1911                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1912                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1913                                               $diffinfo->{'to_id'}) . "(new)" .
1914                                       "</div>\n"; # class="diff_info"
1915
1916                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1917                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1918                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1919                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1920                                               $diffinfo->{'from_id'}) . "(deleted)" .
1921                                       "</div>\n"; # class="diff_info"
1922
1923                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1924                                  $diffinfo->{'status'} eq "C" || # copied
1925                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1926                                 print "<div class=\"diff_info\">" .
1927                                       file_type($diffinfo->{'from_mode'}) . ":" .
1928                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1929                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1930                                               $diffinfo->{'from_id'}) .
1931                                       " -> " .
1932                                       file_type($diffinfo->{'to_mode'}) . ":" .
1933                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1934                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1935                                               $diffinfo->{'to_id'});
1936                                 print "</div>\n"; # class="diff_info"
1937
1938                         } else { # modified, mode changed, ...
1939                                 print "<div class=\"diff_info\">" .
1940                                       file_type($diffinfo->{'from_mode'}) . ":" .
1941                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1942                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1943                                               $diffinfo->{'from_id'}) .
1944                                       " -> " .
1945                                       file_type($diffinfo->{'to_mode'}) . ":" .
1946                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1947                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1948                                               $diffinfo->{'to_id'});
1949                                 print "</div>\n"; # class="diff_info"
1950                         }
1951
1952                         #print "<div class=\"diff extended_header\">\n";
1953                         $in_header = 1;
1954                         next LINE;
1955                 } # start of patch in patchset
1956
1957
1958                 if ($in_header && $patch_line =~ m/^---/) {
1959                         #print "</div>\n"; # class="diff extended_header"
1960                         $in_header = 0;
1961
1962                         my $file = $diffinfo->{'from_file'};
1963                         $file  ||= $diffinfo->{'file'};
1964                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1965                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1966                                         -class => "list"}, esc_html($file));
1967                         $patch_line =~ s|a/.*$|a/$file|g;
1968                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1969
1970                         $patch_line = <$fd>;
1971                         chomp $patch_line;
1972
1973                         #$patch_line =~ m/^+++/;
1974                         $file    = $diffinfo->{'to_file'};
1975                         $file  ||= $diffinfo->{'file'};
1976                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1977                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1978                                         -class => "list"}, esc_html($file));
1979                         $patch_line =~ s|b/.*|b/$file|g;
1980                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1981
1982                         next LINE;
1983                 }
1984                 next LINE if $in_header;
1985
1986                 print format_diff_line($patch_line);
1987         }
1988         print "</div>\n" if $patch_found; # class="patch"
1989
1990         print "</div>\n"; # class="patchset"
1991 }
1992
1993 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1994
1995 sub git_shortlog_body {
1996         # uses global variable $project
1997         my ($revlist, $from, $to, $refs, $extra) = @_;
1998
1999         $from = 0 unless defined $from;
2000         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2001
2002         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2003         my $alternate = 1;
2004         for (my $i = $from; $i <= $to; $i++) {
2005                 my $commit = $revlist->[$i];
2006                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2007                 my $ref = format_ref_marker($refs, $commit);
2008                 my %co = parse_commit($commit);
2009                 if ($alternate) {
2010                         print "<tr class=\"dark\">\n";
2011                 } else {
2012                         print "<tr class=\"light\">\n";
2013                 }
2014                 $alternate ^= 1;
2015                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2016                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2017                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2018                       "<td>";
2019                 print format_subject_html($co{'title'}, $co{'title_short'},
2020                                           href(action=>"commit", hash=>$commit), $ref);
2021                 print "</td>\n" .
2022                       "<td class=\"link\">" .
2023                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2024                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") . " | " .
2025                       $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2026                 print "</td>\n" .
2027                       "</tr>\n";
2028         }
2029         if (defined $extra) {
2030                 print "<tr>\n" .
2031                       "<td colspan=\"4\">$extra</td>\n" .
2032                       "</tr>\n";
2033         }
2034         print "</table>\n";
2035 }
2036
2037 sub git_history_body {
2038         # Warning: assumes constant type (blob or tree) during history
2039         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2040
2041         $from = 0 unless defined $from;
2042         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2043
2044         print "<table class=\"history\" cellspacing=\"0\">\n";
2045         my $alternate = 1;
2046         for (my $i = $from; $i <= $to; $i++) {
2047                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2048                         next;
2049                 }
2050
2051                 my $commit = $1;
2052                 my %co = parse_commit($commit);
2053                 if (!%co) {
2054                         next;
2055                 }
2056
2057                 my $ref = format_ref_marker($refs, $commit);
2058
2059                 if ($alternate) {
2060                         print "<tr class=\"dark\">\n";
2061                 } else {
2062                         print "<tr class=\"light\">\n";
2063                 }
2064                 $alternate ^= 1;
2065                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2066                       # shortlog uses      chop_str($co{'author_name'}, 10)
2067                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2068                       "<td>";
2069                 # originally git_history used chop_str($co{'title'}, 50)
2070                 print format_subject_html($co{'title'}, $co{'title_short'},
2071                                           href(action=>"commit", hash=>$commit), $ref);
2072                 print "</td>\n" .
2073                       "<td class=\"link\">" .
2074                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2075                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2076
2077                 if ($ftype eq 'blob') {
2078                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2079                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2080                         if (defined $blob_current && defined $blob_parent &&
2081                                         $blob_current ne $blob_parent) {
2082                                 print " | " .
2083                                         $cgi->a({-href => href(action=>"blobdiff",
2084                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2085                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2086                                                                file_name=>$file_name)},
2087                                                 "diff to current");
2088                         }
2089                 }
2090                 print "</td>\n" .
2091                       "</tr>\n";
2092         }
2093         if (defined $extra) {
2094                 print "<tr>\n" .
2095                       "<td colspan=\"4\">$extra</td>\n" .
2096                       "</tr>\n";
2097         }
2098         print "</table>\n";
2099 }
2100
2101 sub git_tags_body {
2102         # uses global variable $project
2103         my ($taglist, $from, $to, $extra) = @_;
2104         $from = 0 unless defined $from;
2105         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2106
2107         print "<table class=\"tags\" cellspacing=\"0\">\n";
2108         my $alternate = 1;
2109         for (my $i = $from; $i <= $to; $i++) {
2110                 my $entry = $taglist->[$i];
2111                 my %tag = %$entry;
2112                 my $comment_lines = $tag{'comment'};
2113                 my $comment = shift @$comment_lines;
2114                 my $comment_short;
2115                 if (defined $comment) {
2116                         $comment_short = chop_str($comment, 30, 5);
2117                 }
2118                 if ($alternate) {
2119                         print "<tr class=\"dark\">\n";
2120                 } else {
2121                         print "<tr class=\"light\">\n";
2122                 }
2123                 $alternate ^= 1;
2124                 print "<td><i>$tag{'age'}</i></td>\n" .
2125                       "<td>" .
2126                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2127                                -class => "list name"}, esc_html($tag{'name'})) .
2128                       "</td>\n" .
2129                       "<td>";
2130                 if (defined $comment) {
2131                         print format_subject_html($comment, $comment_short,
2132                                                   href(action=>"tag", hash=>$tag{'id'}));
2133                 }
2134                 print "</td>\n" .
2135                       "<td class=\"selflink\">";
2136                 if ($tag{'type'} eq "tag") {
2137                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2138                 } else {
2139                         print "&nbsp;";
2140                 }
2141                 print "</td>\n" .
2142                       "<td class=\"link\">" . " | " .
2143                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2144                 if ($tag{'reftype'} eq "commit") {
2145                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2146                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2147                 } elsif ($tag{'reftype'} eq "blob") {
2148                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2149                 }
2150                 print "</td>\n" .
2151                       "</tr>";
2152         }
2153         if (defined $extra) {
2154                 print "<tr>\n" .
2155                       "<td colspan=\"5\">$extra</td>\n" .
2156                       "</tr>\n";
2157         }
2158         print "</table>\n";
2159 }
2160
2161 sub git_heads_body {
2162         # uses global variable $project
2163         my ($headlist, $head, $from, $to, $extra) = @_;
2164         $from = 0 unless defined $from;
2165         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2166
2167         print "<table class=\"heads\" cellspacing=\"0\">\n";
2168         my $alternate = 1;
2169         for (my $i = $from; $i <= $to; $i++) {
2170                 my $entry = $headlist->[$i];
2171                 my %tag = %$entry;
2172                 my $curr = $tag{'id'} eq $head;
2173                 if ($alternate) {
2174                         print "<tr class=\"dark\">\n";
2175                 } else {
2176                         print "<tr class=\"light\">\n";
2177                 }
2178                 $alternate ^= 1;
2179                 print "<td><i>$tag{'age'}</i></td>\n" .
2180                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2181                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2182                                -class => "list name"},esc_html($tag{'name'})) .
2183                       "</td>\n" .
2184                       "<td class=\"link\">" .
2185                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2186                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") . " | " .
2187                       $cgi->a({-href => href(action=>"tree", hash=>$tag{'name'}, hash_base=>$tag{'name'})}, "tree") .
2188                       "</td>\n" .
2189                       "</tr>";
2190         }
2191         if (defined $extra) {
2192                 print "<tr>\n" .
2193                       "<td colspan=\"3\">$extra</td>\n" .
2194                       "</tr>\n";
2195         }
2196         print "</table>\n";
2197 }
2198
2199 ## ======================================================================
2200 ## ======================================================================
2201 ## actions
2202
2203 sub git_project_list {
2204         my $order = $cgi->param('o');
2205         if (defined $order && $order !~ m/project|descr|owner|age/) {
2206                 die_error(undef, "Unknown order parameter");
2207         }
2208
2209         my @list = git_get_projects_list();
2210         my @projects;
2211         if (!@list) {
2212                 die_error(undef, "No projects found");
2213         }
2214         foreach my $pr (@list) {
2215                 my $head = git_get_head_hash($pr->{'path'});
2216                 if (!defined $head) {
2217                         next;
2218                 }
2219                 $git_dir = "$projectroot/$pr->{'path'}";
2220                 my %co = parse_commit($head);
2221                 if (!%co) {
2222                         next;
2223                 }
2224                 $pr->{'commit'} = \%co;
2225                 if (!defined $pr->{'descr'}) {
2226                         my $descr = git_get_project_description($pr->{'path'}) || "";
2227                         $pr->{'descr'} = chop_str($descr, 25, 5);
2228                 }
2229                 if (!defined $pr->{'owner'}) {
2230                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2231                 }
2232                 push @projects, $pr;
2233         }
2234
2235         git_header_html();
2236         if (-f $home_text) {
2237                 print "<div class=\"index_include\">\n";
2238                 open (my $fd, $home_text);
2239                 print <$fd>;
2240                 close $fd;
2241                 print "</div>\n";
2242         }
2243         print "<table class=\"project_list\">\n" .
2244               "<tr>\n";
2245         $order ||= "project";
2246         if ($order eq "project") {
2247                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2248                 print "<th>Project</th>\n";
2249         } else {
2250                 print "<th>" .
2251                       $cgi->a({-href => href(project=>undef, order=>'project'),
2252                                -class => "header"}, "Project") .
2253                       "</th>\n";
2254         }
2255         if ($order eq "descr") {
2256                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2257                 print "<th>Description</th>\n";
2258         } else {
2259                 print "<th>" .
2260                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2261                                -class => "header"}, "Description") .
2262                       "</th>\n";
2263         }
2264         if ($order eq "owner") {
2265                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2266                 print "<th>Owner</th>\n";
2267         } else {
2268                 print "<th>" .
2269                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2270                                -class => "header"}, "Owner") .
2271                       "</th>\n";
2272         }
2273         if ($order eq "age") {
2274                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2275                 print "<th>Last Change</th>\n";
2276         } else {
2277                 print "<th>" .
2278                       $cgi->a({-href => href(project=>undef, order=>'age'),
2279                                -class => "header"}, "Last Change") .
2280                       "</th>\n";
2281         }
2282         print "<th></th>\n" .
2283               "</tr>\n";
2284         my $alternate = 1;
2285         foreach my $pr (@projects) {
2286                 if ($alternate) {
2287                         print "<tr class=\"dark\">\n";
2288                 } else {
2289                         print "<tr class=\"light\">\n";
2290                 }
2291                 $alternate ^= 1;
2292                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2293                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2294                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2295                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2296                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2297                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2298                       "<td class=\"link\">" .
2299                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2300                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2301                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2302                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2303                       "</td>\n" .
2304                       "</tr>\n";
2305         }
2306         print "</table>\n";
2307         git_footer_html();
2308 }
2309
2310 sub git_project_index {
2311         my @projects = git_get_projects_list();
2312
2313         print $cgi->header(
2314                 -type => 'text/plain',
2315                 -charset => 'utf-8',
2316                 -content_disposition => 'inline; filename="index.aux"');
2317
2318         foreach my $pr (@projects) {
2319                 if (!exists $pr->{'owner'}) {
2320                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2321                 }
2322
2323                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2324                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2325                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2326                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2327                 $path  =~ s/ /\+/g;
2328                 $owner =~ s/ /\+/g;
2329
2330                 print "$path $owner\n";
2331         }
2332 }
2333
2334 sub git_summary {
2335         my $descr = git_get_project_description($project) || "none";
2336         my $head = git_get_head_hash($project);
2337         my %co = parse_commit($head);
2338         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2339
2340         my $owner = git_get_project_owner($project);
2341
2342         my ($reflist, $refs) = git_get_refs_list();
2343
2344         my @taglist;
2345         my @headlist;
2346         foreach my $ref (@$reflist) {
2347                 if ($ref->{'name'} =~ s!^heads/!!) {
2348                         push @headlist, $ref;
2349                 } else {
2350                         $ref->{'name'} =~ s!^tags/!!;
2351                         push @taglist, $ref;
2352                 }
2353         }
2354
2355         git_header_html();
2356         git_print_page_nav('summary','', $head);
2357
2358         print "<div class=\"title\">&nbsp;</div>\n";
2359         print "<table cellspacing=\"0\">\n" .
2360               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2361               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2362               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2363         # use per project git URL list in $projectroot/$project/cloneurl
2364         # or make project git URL from git base URL and project name
2365         my $url_tag = "URL";
2366         my @url_list = git_get_project_url_list($project);
2367         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2368         foreach my $git_url (@url_list) {
2369                 next unless $git_url;
2370                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2371                 $url_tag = "";
2372         }
2373         print "</table>\n";
2374
2375         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2376                 git_get_head_hash($project)
2377                 or die_error(undef, "Open git-rev-list failed");
2378         my @revlist = map { chomp; $_ } <$fd>;
2379         close $fd;
2380         git_print_header_div('shortlog');
2381         git_shortlog_body(\@revlist, 0, 15, $refs,
2382                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2383
2384         if (@taglist) {
2385                 git_print_header_div('tags');
2386                 git_tags_body(\@taglist, 0, 15,
2387                               $cgi->a({-href => href(action=>"tags")}, "..."));
2388         }
2389
2390         if (@headlist) {
2391                 git_print_header_div('heads');
2392                 git_heads_body(\@headlist, $head, 0, 15,
2393                                $cgi->a({-href => href(action=>"heads")}, "..."));
2394         }
2395
2396         git_footer_html();
2397 }
2398
2399 sub git_tag {
2400         my $head = git_get_head_hash($project);
2401         git_header_html();
2402         git_print_page_nav('','', $head,undef,$head);
2403         my %tag = parse_tag($hash);
2404         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2405         print "<div class=\"title_text\">\n" .
2406               "<table cellspacing=\"0\">\n" .
2407               "<tr>\n" .
2408               "<td>object</td>\n" .
2409               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2410                                $tag{'object'}) . "</td>\n" .
2411               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2412                                               $tag{'type'}) . "</td>\n" .
2413               "</tr>\n";
2414         if (defined($tag{'author'})) {
2415                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2416                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2417                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2418                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2419                         "</td></tr>\n";
2420         }
2421         print "</table>\n\n" .
2422               "</div>\n";
2423         print "<div class=\"page_body\">";
2424         my $comment = $tag{'comment'};
2425         foreach my $line (@$comment) {
2426                 print esc_html($line) . "<br/>\n";
2427         }
2428         print "</div>\n";
2429         git_footer_html();
2430 }
2431
2432 sub git_blame2 {
2433         my $fd;
2434         my $ftype;
2435
2436         my ($have_blame) = gitweb_check_feature('blame');
2437         if (!$have_blame) {
2438                 die_error('403 Permission denied', "Permission denied");
2439         }
2440         die_error('404 Not Found', "File name not defined") if (!$file_name);
2441         $hash_base ||= git_get_head_hash($project);
2442         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2443         my %co = parse_commit($hash_base)
2444                 or die_error(undef, "Reading commit failed");
2445         if (!defined $hash) {
2446                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2447                         or die_error(undef, "Error looking up file");
2448         }
2449         $ftype = git_get_type($hash);
2450         if ($ftype !~ "blob") {
2451                 die_error("400 Bad Request", "Object is not a blob");
2452         }
2453         open ($fd, "-|", git_cmd(), "blame", '-l', '--', $file_name, $hash_base)
2454                 or die_error(undef, "Open git-blame failed");
2455         git_header_html();
2456         my $formats_nav =
2457                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2458                         "blob") .
2459                 " | " .
2460                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2461                         "history") .
2462                 " | " .
2463                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2464                         "HEAD");
2465         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2466         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2467         git_print_page_path($file_name, $ftype, $hash_base);
2468         my @rev_color = (qw(light2 dark2));
2469         my $num_colors = scalar(@rev_color);
2470         my $current_color = 0;
2471         my $last_rev;
2472         print <<HTML;
2473 <div class="page_body">
2474 <table class="blame">
2475 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2476 HTML
2477         while (<$fd>) {
2478                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2479                 my $full_rev = $1;
2480                 my $rev = substr($full_rev, 0, 8);
2481                 my $lineno = $2;
2482                 my $data = $3;
2483
2484                 if (!defined $last_rev) {
2485                         $last_rev = $full_rev;
2486                 } elsif ($last_rev ne $full_rev) {
2487                         $last_rev = $full_rev;
2488                         $current_color = ++$current_color % $num_colors;
2489                 }
2490                 print "<tr class=\"$rev_color[$current_color]\">\n";
2491                 print "<td class=\"sha1\">" .
2492                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2493                                 esc_html($rev)) . "</td>\n";
2494                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2495                       esc_html($lineno) . "</a></td>\n";
2496                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2497                 print "</tr>\n";
2498         }
2499         print "</table>\n";
2500         print "</div>";
2501         close $fd
2502                 or print "Reading blob failed\n";
2503         git_footer_html();
2504 }
2505
2506 sub git_blame {
2507         my $fd;
2508
2509         my ($have_blame) = gitweb_check_feature('blame');
2510         if (!$have_blame) {
2511                 die_error('403 Permission denied', "Permission denied");
2512         }
2513         die_error('404 Not Found', "File name not defined") if (!$file_name);
2514         $hash_base ||= git_get_head_hash($project);
2515         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2516         my %co = parse_commit($hash_base)
2517                 or die_error(undef, "Reading commit failed");
2518         if (!defined $hash) {
2519                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2520                         or die_error(undef, "Error lookup file");
2521         }
2522         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2523                 or die_error(undef, "Open git-annotate failed");
2524         git_header_html();
2525         my $formats_nav =
2526                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2527                         "blob") .
2528                 " | " .
2529                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2530                         "history") .
2531                 " | " .
2532                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2533                         "HEAD");
2534         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2535         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2536         git_print_page_path($file_name, 'blob', $hash_base);
2537         print "<div class=\"page_body\">\n";
2538         print <<HTML;
2539 <table class="blame">
2540   <tr>
2541     <th>Commit</th>
2542     <th>Age</th>
2543     <th>Author</th>
2544     <th>Line</th>
2545     <th>Data</th>
2546   </tr>
2547 HTML
2548         my @line_class = (qw(light dark));
2549         my $line_class_len = scalar (@line_class);
2550         my $line_class_num = $#line_class;
2551         while (my $line = <$fd>) {
2552                 my $long_rev;
2553                 my $short_rev;
2554                 my $author;
2555                 my $time;
2556                 my $lineno;
2557                 my $data;
2558                 my $age;
2559                 my $age_str;
2560                 my $age_class;
2561
2562                 chomp $line;
2563                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2564
2565                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2566                         $long_rev = $1;
2567                         $author   = $2;
2568                         $time     = $3;
2569                         $lineno   = $4;
2570                         $data     = $5;
2571                 } else {
2572                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2573                         next;
2574                 }
2575                 $short_rev  = substr ($long_rev, 0, 8);
2576                 $age        = time () - $time;
2577                 $age_str    = age_string ($age);
2578                 $age_str    =~ s/ /&nbsp;/g;
2579                 $age_class  = age_class($age);
2580                 $author     = esc_html ($author);
2581                 $author     =~ s/ /&nbsp;/g;
2582
2583                 $data = untabify($data);
2584                 $data = esc_html ($data);
2585
2586                 print <<HTML;
2587   <tr class="$line_class[$line_class_num]">
2588     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2589     <td class="$age_class">$age_str</td>
2590     <td>$author</td>
2591     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2592     <td class="pre">$data</td>
2593   </tr>
2594 HTML
2595         } # while (my $line = <$fd>)
2596         print "</table>\n\n";
2597         close $fd
2598                 or print "Reading blob failed.\n";
2599         print "</div>";
2600         git_footer_html();
2601 }
2602
2603 sub git_tags {
2604         my $head = git_get_head_hash($project);
2605         git_header_html();
2606         git_print_page_nav('','', $head,undef,$head);
2607         git_print_header_div('summary', $project);
2608
2609         my ($taglist) = git_get_refs_list("tags");
2610         if (@$taglist) {
2611                 git_tags_body($taglist);
2612         }
2613         git_footer_html();
2614 }
2615
2616 sub git_heads {
2617         my $head = git_get_head_hash($project);
2618         git_header_html();
2619         git_print_page_nav('','', $head,undef,$head);
2620         git_print_header_div('summary', $project);
2621
2622         my ($headlist) = git_get_refs_list("heads");
2623         if (@$headlist) {
2624                 git_heads_body($headlist, $head);
2625         }
2626         git_footer_html();
2627 }
2628
2629 sub git_blob_plain {
2630         my $expires;
2631
2632         if (!defined $hash) {
2633                 if (defined $file_name) {
2634                         my $base = $hash_base || git_get_head_hash($project);
2635                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2636                                 or die_error(undef, "Error lookup file");
2637                 } else {
2638                         die_error(undef, "No file name defined");
2639                 }
2640         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2641                 # blobs defined by non-textual hash id's can be cached
2642                 $expires = "+1d";
2643         }
2644
2645         my $type = shift;
2646         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2647                 or die_error(undef, "Couldn't cat $file_name, $hash");
2648
2649         $type ||= blob_mimetype($fd, $file_name);
2650
2651         # save as filename, even when no $file_name is given
2652         my $save_as = "$hash";
2653         if (defined $file_name) {
2654                 $save_as = $file_name;
2655         } elsif ($type =~ m/^text\//) {
2656                 $save_as .= '.txt';
2657         }
2658
2659         print $cgi->header(
2660                 -type => "$type",
2661                 -expires=>$expires,
2662                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2663         undef $/;
2664         binmode STDOUT, ':raw';
2665         print <$fd>;
2666         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2667         $/ = "\n";
2668         close $fd;
2669 }
2670
2671 sub git_blob {
2672         my $expires;
2673
2674         if (!defined $hash) {
2675                 if (defined $file_name) {
2676                         my $base = $hash_base || git_get_head_hash($project);
2677                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2678                                 or die_error(undef, "Error lookup file");
2679                 } else {
2680                         die_error(undef, "No file name defined");
2681                 }
2682         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2683                 # blobs defined by non-textual hash id's can be cached
2684                 $expires = "+1d";
2685         }
2686
2687         my ($have_blame) = gitweb_check_feature('blame');
2688         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2689                 or die_error(undef, "Couldn't cat $file_name, $hash");
2690         my $mimetype = blob_mimetype($fd, $file_name);
2691         if ($mimetype !~ m/^text\//) {
2692                 close $fd;
2693                 return git_blob_plain($mimetype);
2694         }
2695         git_header_html(undef, $expires);
2696         my $formats_nav = '';
2697         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2698                 if (defined $file_name) {
2699                         if ($have_blame) {
2700                                 $formats_nav .=
2701                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2702                                                                hash=>$hash, file_name=>$file_name)},
2703                                                 "blame") .
2704                                         " | ";
2705                         }
2706                         $formats_nav .=
2707                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2708                                                        hash=>$hash, file_name=>$file_name)},
2709                                         "history") .
2710                                 " | " .
2711                                 $cgi->a({-href => href(action=>"blob_plain",
2712                                                        hash=>$hash, file_name=>$file_name)},
2713                                         "raw") .
2714                                 " | " .
2715                                 $cgi->a({-href => href(action=>"blob",
2716                                                        hash_base=>"HEAD", file_name=>$file_name)},
2717                                         "HEAD");
2718                 } else {
2719                         $formats_nav .=
2720                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2721                 }
2722                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2723                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2724         } else {
2725                 print "<div class=\"page_nav\">\n" .
2726                       "<br/><br/></div>\n" .
2727                       "<div class=\"title\">$hash</div>\n";
2728         }
2729         git_print_page_path($file_name, "blob", $hash_base);
2730         print "<div class=\"page_body\">\n";
2731         my $nr;
2732         while (my $line = <$fd>) {
2733                 chomp $line;
2734                 $nr++;
2735                 $line = untabify($line);
2736                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2737                        $nr, $nr, $nr, esc_html($line);
2738         }
2739         close $fd
2740                 or print "Reading blob failed.\n";
2741         print "</div>";
2742         git_footer_html();
2743 }
2744
2745 sub git_tree {
2746         my $have_snapshot = gitweb_have_snapshot();
2747
2748         if (!defined $hash_base) {
2749                 $hash_base = "HEAD";
2750         }
2751         if (!defined $hash) {
2752                 if (defined $file_name) {
2753                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
2754                 } else {
2755                         $hash = $hash_base;
2756                 }
2757         }
2758         $/ = "\0";
2759         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2760                 or die_error(undef, "Open git-ls-tree failed");
2761         my @entries = map { chomp; $_ } <$fd>;
2762         close $fd or die_error(undef, "Reading tree failed");
2763         $/ = "\n";
2764
2765         my $refs = git_get_references();
2766         my $ref = format_ref_marker($refs, $hash_base);
2767         git_header_html();
2768         my $base = "";
2769         my ($have_blame) = gitweb_check_feature('blame');
2770         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2771                 my @views_nav = ();
2772                 if (defined $file_name) {
2773                         push @views_nav,
2774                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2775                                                        hash=>$hash, file_name=>$file_name)},
2776                                         "history"),
2777                                 $cgi->a({-href => href(action=>"tree",
2778                                                        hash_base=>"HEAD", file_name=>$file_name)},
2779                                         "HEAD"),
2780                 }
2781                 if ($have_snapshot) {
2782                         # FIXME: Should be available when we have no hash base as well.
2783                         push @views_nav,
2784                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
2785                                         "snapshot");
2786                 }
2787                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
2788                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2789         } else {
2790                 undef $hash_base;
2791                 print "<div class=\"page_nav\">\n";
2792                 print "<br/><br/></div>\n";
2793                 print "<div class=\"title\">$hash</div>\n";
2794         }
2795         if (defined $file_name) {
2796                 $base = esc_html("$file_name/");
2797         }
2798         git_print_page_path($file_name, 'tree', $hash_base);
2799         print "<div class=\"page_body\">\n";
2800         print "<table cellspacing=\"0\">\n";
2801         my $alternate = 1;
2802         foreach my $line (@entries) {
2803                 my %t = parse_ls_tree_line($line, -z => 1);
2804
2805                 if ($alternate) {
2806                         print "<tr class=\"dark\">\n";
2807                 } else {
2808                         print "<tr class=\"light\">\n";
2809                 }
2810                 $alternate ^= 1;
2811
2812                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2813
2814                 print "</tr>\n";
2815         }
2816         print "</table>\n" .
2817               "</div>";
2818         git_footer_html();
2819 }
2820
2821 sub git_snapshot {
2822         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2823         my $have_snapshot = (defined $ctype && defined $suffix);
2824         if (!$have_snapshot) {
2825                 die_error('403 Permission denied', "Permission denied");
2826         }
2827
2828         if (!defined $hash) {
2829                 $hash = git_get_head_hash($project);
2830         }
2831
2832         my $filename = basename($project) . "-$hash.tar.$suffix";
2833
2834         print $cgi->header(
2835                 -type => 'application/x-tar',
2836                 -content_encoding => $ctype,
2837                 -content_disposition => 'inline; filename="' . "$filename" . '"',
2838                 -status => '200 OK');
2839
2840         my $git_command = git_cmd_str();
2841         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2842                 die_error(undef, "Execute git-tar-tree failed.");
2843         binmode STDOUT, ':raw';
2844         print <$fd>;
2845         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2846         close $fd;
2847
2848 }
2849
2850 sub git_log {
2851         my $head = git_get_head_hash($project);
2852         if (!defined $hash) {
2853                 $hash = $head;
2854         }
2855         if (!defined $page) {
2856                 $page = 0;
2857         }
2858         my $refs = git_get_references();
2859
2860         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2861         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2862                 or die_error(undef, "Open git-rev-list failed");
2863         my @revlist = map { chomp; $_ } <$fd>;
2864         close $fd;
2865
2866         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2867
2868         git_header_html();
2869         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2870
2871         if (!@revlist) {
2872                 my %co = parse_commit($hash);
2873
2874                 git_print_header_div('summary', $project);
2875                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2876         }
2877         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2878                 my $commit = $revlist[$i];
2879                 my $ref = format_ref_marker($refs, $commit);
2880                 my %co = parse_commit($commit);
2881                 next if !%co;
2882                 my %ad = parse_date($co{'author_epoch'});
2883                 git_print_header_div('commit',
2884                                "<span class=\"age\">$co{'age_string'}</span>" .
2885                                esc_html($co{'title'}) . $ref,
2886                                $commit);
2887                 print "<div class=\"title_text\">\n" .
2888                       "<div class=\"log_link\">\n" .
2889                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2890                       " | " .
2891                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2892                       " | " .
2893                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
2894                       "<br/>\n" .
2895                       "</div>\n" .
2896                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2897                       "</div>\n";
2898
2899                 print "<div class=\"log_body\">\n";
2900                 git_print_simplified_log($co{'comment'});
2901                 print "</div>\n";
2902         }
2903         git_footer_html();
2904 }
2905
2906 sub git_commit {
2907         my %co = parse_commit($hash);
2908         if (!%co) {
2909                 die_error(undef, "Unknown commit object");
2910         }
2911         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2912         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2913
2914         my $parent = $co{'parent'};
2915         if (!defined $parent) {
2916                 $parent = "--root";
2917         }
2918         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2919                 or die_error(undef, "Open git-diff-tree failed");
2920         my @difftree = map { chomp; $_ } <$fd>;
2921         close $fd or die_error(undef, "Reading git-diff-tree failed");
2922
2923         # non-textual hash id's can be cached
2924         my $expires;
2925         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2926                 $expires = "+1d";
2927         }
2928         my $refs = git_get_references();
2929         my $ref = format_ref_marker($refs, $co{'id'});
2930
2931         my $have_snapshot = gitweb_have_snapshot();
2932
2933         my @views_nav = ();
2934         if (defined $file_name && defined $co{'parent'}) {
2935                 push @views_nav,
2936                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2937                                 "blame");
2938         }
2939         if (defined $co{'parent'}) {
2940                 push @views_nav,
2941                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash)}, "shortlog"),
2942                         $cgi->a({-href => href(action=>"log", hash=>$hash)}, "log");
2943         }
2944         git_header_html(undef, $expires);
2945         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2946                            $hash, $co{'tree'}, $hash,
2947                            join (' | ', @views_nav));
2948
2949         if (defined $co{'parent'}) {
2950                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2951         } else {
2952                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2953         }
2954         print "<div class=\"title_text\">\n" .
2955               "<table cellspacing=\"0\">\n";
2956         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2957               "<tr>" .
2958               "<td></td><td> $ad{'rfc2822'}";
2959         if ($ad{'hour_local'} < 6) {
2960                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2961                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2962         } else {
2963                 printf(" (%02d:%02d %s)",
2964                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2965         }
2966         print "</td>" .
2967               "</tr>\n";
2968         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2969         print "<tr><td></td><td> $cd{'rfc2822'}" .
2970               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2971               "</td></tr>\n";
2972         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2973         print "<tr>" .
2974               "<td>tree</td>" .
2975               "<td class=\"sha1\">" .
2976               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2977                        class => "list"}, $co{'tree'}) .
2978               "</td>" .
2979               "<td class=\"link\">" .
2980               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2981                       "tree");
2982         if ($have_snapshot) {
2983                 print " | " .
2984                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2985         }
2986         print "</td>" .
2987               "</tr>\n";
2988         my $parents = $co{'parents'};
2989         foreach my $par (@$parents) {
2990                 print "<tr>" .
2991                       "<td>parent</td>" .
2992                       "<td class=\"sha1\">" .
2993                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2994                                class => "list"}, $par) .
2995                       "</td>" .
2996                       "<td class=\"link\">" .
2997                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2998                       " | " .
2999                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3000                       "</td>" .
3001                       "</tr>\n";
3002         }
3003         print "</table>".
3004               "</div>\n";
3005
3006         print "<div class=\"page_body\">\n";
3007         git_print_log($co{'comment'});
3008         print "</div>\n";
3009
3010         git_difftree_body(\@difftree, $hash, $parent);
3011
3012         git_footer_html();
3013 }
3014
3015 sub git_blobdiff {
3016         my $format = shift || 'html';
3017
3018         my $fd;
3019         my @difftree;
3020         my %diffinfo;
3021         my $expires;
3022
3023         # preparing $fd and %diffinfo for git_patchset_body
3024         # new style URI
3025         if (defined $hash_base && defined $hash_parent_base) {
3026                 if (defined $file_name) {
3027                         # read raw output
3028                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
3029                                 "--", $file_name
3030                                 or die_error(undef, "Open git-diff-tree failed");
3031                         @difftree = map { chomp; $_ } <$fd>;
3032                         close $fd
3033                                 or die_error(undef, "Reading git-diff-tree failed");
3034                         @difftree
3035                                 or die_error('404 Not Found', "Blob diff not found");
3036
3037                 } elsif (defined $hash &&
3038                          $hash =~ /[0-9a-fA-F]{40}/) {
3039                         # try to find filename from $hash
3040
3041                         # read filtered raw output
3042                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
3043                                 or die_error(undef, "Open git-diff-tree failed");
3044                         @difftree =
3045                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3046                                 # $hash == to_id
3047                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3048                                 map { chomp; $_ } <$fd>;
3049                         close $fd
3050                                 or die_error(undef, "Reading git-diff-tree failed");
3051                         @difftree
3052                                 or die_error('404 Not Found', "Blob diff not found");
3053
3054                 } else {
3055                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3056                 }
3057
3058                 if (@difftree > 1) {
3059                         die_error('404 Not Found', "Ambiguous blob diff specification");
3060                 }
3061
3062                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3063                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3064                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3065
3066                 $hash_parent ||= $diffinfo{'from_id'};
3067                 $hash        ||= $diffinfo{'to_id'};
3068
3069                 # non-textual hash id's can be cached
3070                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3071                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3072                         $expires = '+1d';
3073                 }
3074
3075                 # open patch output
3076                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3077                         '-p', $hash_parent_base, $hash_base,
3078                         "--", $file_name
3079                         or die_error(undef, "Open git-diff-tree failed");
3080         }
3081
3082         # old/legacy style URI
3083         if (!%diffinfo && # if new style URI failed
3084             defined $hash && defined $hash_parent) {
3085                 # fake git-diff-tree raw output
3086                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3087                 $diffinfo{'from_id'} = $hash_parent;
3088                 $diffinfo{'to_id'}   = $hash;
3089                 if (defined $file_name) {
3090                         if (defined $file_parent) {
3091                                 $diffinfo{'status'} = '2';
3092                                 $diffinfo{'from_file'} = $file_parent;
3093                                 $diffinfo{'to_file'}   = $file_name;
3094                         } else { # assume not renamed
3095                                 $diffinfo{'status'} = '1';
3096                                 $diffinfo{'from_file'} = $file_name;
3097                                 $diffinfo{'to_file'}   = $file_name;
3098                         }
3099                 } else { # no filename given
3100                         $diffinfo{'status'} = '2';
3101                         $diffinfo{'from_file'} = $hash_parent;
3102                         $diffinfo{'to_file'}   = $hash;
3103                 }
3104
3105                 # non-textual hash id's can be cached
3106                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3107                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3108                         $expires = '+1d';
3109                 }
3110
3111                 # open patch output
3112                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3113                         or die_error(undef, "Open git-diff failed");
3114         } else  {
3115                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3116                         unless %diffinfo;
3117         }
3118
3119         # header
3120         if ($format eq 'html') {
3121                 my $formats_nav =
3122                         $cgi->a({-href => href(action=>"blobdiff_plain",
3123                                                hash=>$hash, hash_parent=>$hash_parent,
3124                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3125                                                file_name=>$file_name, file_parent=>$file_parent)},
3126                                 "raw");
3127                 git_header_html(undef, $expires);
3128                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3129                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3130                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3131                 } else {
3132                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3133                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3134                 }
3135                 if (defined $file_name) {
3136                         git_print_page_path($file_name, "blob", $hash_base);
3137                 } else {
3138                         print "<div class=\"page_path\"></div>\n";
3139                 }
3140
3141         } elsif ($format eq 'plain') {
3142                 print $cgi->header(
3143                         -type => 'text/plain',
3144                         -charset => 'utf-8',
3145                         -expires => $expires,
3146                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3147
3148                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3149
3150         } else {
3151                 die_error(undef, "Unknown blobdiff format");
3152         }
3153
3154         # patch
3155         if ($format eq 'html') {
3156                 print "<div class=\"page_body\">\n";
3157
3158                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3159                 close $fd;
3160
3161                 print "</div>\n"; # class="page_body"
3162                 git_footer_html();
3163
3164         } else {
3165                 while (my $line = <$fd>) {
3166                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3167                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3168
3169                         print $line;
3170
3171                         last if $line =~ m!^\+\+\+!;
3172                 }
3173                 local $/ = undef;
3174                 print <$fd>;
3175                 close $fd;
3176         }
3177 }
3178
3179 sub git_blobdiff_plain {
3180         git_blobdiff('plain');
3181 }
3182
3183 sub git_commitdiff {
3184         my $format = shift || 'html';
3185         my %co = parse_commit($hash);
3186         if (!%co) {
3187                 die_error(undef, "Unknown commit object");
3188         }
3189         if (!defined $hash_parent) {
3190                 $hash_parent = $co{'parent'} || '--root';
3191         }
3192
3193         # read commitdiff
3194         my $fd;
3195         my @difftree;
3196         if ($format eq 'html') {
3197                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3198                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3199                         or die_error(undef, "Open git-diff-tree failed");
3200
3201                 while (chomp(my $line = <$fd>)) {
3202                         # empty line ends raw part of diff-tree output
3203                         last unless $line;
3204                         push @difftree, $line;
3205                 }
3206
3207         } elsif ($format eq 'plain') {
3208                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3209                         '-p', $hash_parent, $hash
3210                         or die_error(undef, "Open git-diff-tree failed");
3211
3212         } else {
3213                 die_error(undef, "Unknown commitdiff format");
3214         }
3215
3216         # non-textual hash id's can be cached
3217         my $expires;
3218         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3219                 $expires = "+1d";
3220         }
3221
3222         # write commit message
3223         if ($format eq 'html') {
3224                 my $refs = git_get_references();
3225                 my $ref = format_ref_marker($refs, $co{'id'});
3226                 my $formats_nav =
3227                         $cgi->a({-href => href(action=>"commitdiff_plain",
3228                                                hash=>$hash, hash_parent=>$hash_parent)},
3229                                 "raw");
3230
3231                 git_header_html(undef, $expires);
3232                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3233                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3234                 git_print_authorship(\%co);
3235                 print "<div class=\"page_body\">\n";
3236                 print "<div class=\"log\">\n";
3237                 git_print_simplified_log($co{'comment'}, 1); # skip title
3238                 print "</div>\n"; # class="log"
3239
3240         } elsif ($format eq 'plain') {
3241                 my $refs = git_get_references("tags");
3242                 my $tagname = git_get_rev_name_tags($hash);
3243                 my $filename = basename($project) . "-$hash.patch";
3244
3245                 print $cgi->header(
3246                         -type => 'text/plain',
3247                         -charset => 'utf-8',
3248                         -expires => $expires,
3249                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3250                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3251                 print <<TEXT;
3252 From: $co{'author'}
3253 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3254 Subject: $co{'title'}
3255 TEXT
3256                 print "X-Git-Tag: $tagname\n" if $tagname;
3257                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3258
3259                 foreach my $line (@{$co{'comment'}}) {
3260                         print "$line\n";
3261                 }
3262                 print "---\n\n";
3263         }
3264
3265         # write patch
3266         if ($format eq 'html') {
3267                 git_difftree_body(\@difftree, $hash, $hash_parent);
3268                 print "<br/>\n";
3269
3270                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3271                 close $fd;
3272                 print "</div>\n"; # class="page_body"
3273                 git_footer_html();
3274
3275         } elsif ($format eq 'plain') {
3276                 local $/ = undef;
3277                 print <$fd>;
3278                 close $fd
3279                         or print "Reading git-diff-tree failed\n";
3280         }
3281 }
3282
3283 sub git_commitdiff_plain {
3284         git_commitdiff('plain');
3285 }
3286
3287 sub git_history {
3288         if (!defined $hash_base) {
3289                 $hash_base = git_get_head_hash($project);
3290         }
3291         if (!defined $page) {
3292                 $page = 0;
3293         }
3294         my $ftype;
3295         my %co = parse_commit($hash_base);
3296         if (!%co) {
3297                 die_error(undef, "Unknown commit object");
3298         }
3299
3300         my $refs = git_get_references();
3301         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3302
3303         if (!defined $hash && defined $file_name) {
3304                 $hash = git_get_hash_by_path($hash_base, $file_name);
3305         }
3306         if (defined $hash) {
3307                 $ftype = git_get_type($hash);
3308         }
3309
3310         open my $fd, "-|",
3311                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3312                         or die_error(undef, "Open git-rev-list-failed");
3313         my @revlist = map { chomp; $_ } <$fd>;
3314         close $fd
3315                 or die_error(undef, "Reading git-rev-list failed");
3316
3317         my $paging_nav = '';
3318         if ($page > 0) {
3319                 $paging_nav .=
3320                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3321                                                file_name=>$file_name)},
3322                                 "first");
3323                 $paging_nav .= " &sdot; " .
3324                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3325                                                file_name=>$file_name, page=>$page-1),
3326                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3327         } else {
3328                 $paging_nav .= "first";
3329                 $paging_nav .= " &sdot; prev";
3330         }
3331         if ($#revlist >= (100 * ($page+1)-1)) {
3332                 $paging_nav .= " &sdot; " .
3333                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3334                                                file_name=>$file_name, page=>$page+1),
3335                                  -accesskey => "n", -title => "Alt-n"}, "next");
3336         } else {
3337                 $paging_nav .= " &sdot; next";
3338         }
3339         my $next_link = '';
3340         if ($#revlist >= (100 * ($page+1)-1)) {
3341                 $next_link =
3342                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3343                                                file_name=>$file_name, page=>$page+1),
3344                                  -title => "Alt-n"}, "next");
3345         }
3346
3347         git_header_html();
3348         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3349         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3350         git_print_page_path($file_name, $ftype, $hash_base);
3351
3352         git_history_body(\@revlist, ($page * 100), $#revlist,
3353                          $refs, $hash_base, $ftype, $next_link);
3354
3355         git_footer_html();
3356 }
3357
3358 sub git_search {
3359         if (!defined $searchtext) {
3360                 die_error(undef, "Text field empty");
3361         }
3362         if (!defined $hash) {
3363                 $hash = git_get_head_hash($project);
3364         }
3365         my %co = parse_commit($hash);
3366         if (!%co) {
3367                 die_error(undef, "Unknown commit object");
3368         }
3369
3370         my $commit_search = 1;
3371         my $author_search = 0;
3372         my $committer_search = 0;
3373         my $pickaxe_search = 0;
3374         if ($searchtext =~ s/^author\\://i) {
3375                 $author_search = 1;
3376         } elsif ($searchtext =~ s/^committer\\://i) {
3377                 $committer_search = 1;
3378         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3379                 $commit_search = 0;
3380                 $pickaxe_search = 1;
3381
3382                 # pickaxe may take all resources of your box and run for several minutes
3383                 # with every query - so decide by yourself how public you make this feature
3384                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3385                 if (!$have_pickaxe) {
3386                         die_error('403 Permission denied', "Permission denied");
3387                 }
3388         }
3389         git_header_html();
3390         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3391         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3392
3393         print "<table cellspacing=\"0\">\n";
3394         my $alternate = 1;
3395         if ($commit_search) {
3396                 $/ = "\0";
3397                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3398                 while (my $commit_text = <$fd>) {
3399                         if (!grep m/$searchtext/i, $commit_text) {
3400                                 next;
3401                         }
3402                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3403                                 next;
3404                         }
3405                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3406                                 next;
3407                         }
3408                         my @commit_lines = split "\n", $commit_text;
3409                         my %co = parse_commit(undef, \@commit_lines);
3410                         if (!%co) {
3411                                 next;
3412                         }
3413                         if ($alternate) {
3414                                 print "<tr class=\"dark\">\n";
3415                         } else {
3416                                 print "<tr class=\"light\">\n";
3417                         }
3418                         $alternate ^= 1;
3419                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3420                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3421                               "<td>" .
3422                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3423                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3424                         my $comment = $co{'comment'};
3425                         foreach my $line (@$comment) {
3426                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3427                                         my $lead = esc_html($1) || "";
3428                                         $lead = chop_str($lead, 30, 10);
3429                                         my $match = esc_html($2) || "";
3430                                         my $trail = esc_html($3) || "";
3431                                         $trail = chop_str($trail, 30, 10);
3432                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3433                                         print chop_str($text, 80, 5) . "<br/>\n";
3434                                 }
3435                         }
3436                         print "</td>\n" .
3437                               "<td class=\"link\">" .
3438                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3439                               " | " .
3440                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3441                         print "</td>\n" .
3442                               "</tr>\n";
3443                 }
3444                 close $fd;
3445         }
3446
3447         if ($pickaxe_search) {
3448                 $/ = "\n";
3449                 my $git_command = git_cmd_str();
3450                 open my $fd, "-|", "$git_command rev-list $hash | " .
3451                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3452                 undef %co;
3453                 my @files;
3454                 while (my $line = <$fd>) {
3455                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3456                                 my %set;
3457                                 $set{'file'} = $6;
3458                                 $set{'from_id'} = $3;
3459                                 $set{'to_id'} = $4;
3460                                 $set{'id'} = $set{'to_id'};
3461                                 if ($set{'id'} =~ m/0{40}/) {
3462                                         $set{'id'} = $set{'from_id'};
3463                                 }
3464                                 if ($set{'id'} =~ m/0{40}/) {
3465                                         next;
3466                                 }
3467                                 push @files, \%set;
3468                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3469                                 if (%co) {
3470                                         if ($alternate) {
3471                                                 print "<tr class=\"dark\">\n";
3472                                         } else {
3473                                                 print "<tr class=\"light\">\n";
3474                                         }
3475                                         $alternate ^= 1;
3476                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3477                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3478                                               "<td>" .
3479                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3480                                                       -class => "list subject"},
3481                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3482                                         while (my $setref = shift @files) {
3483                                                 my %set = %$setref;
3484                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3485                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3486                                                               -class => "list"},
3487                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3488                                                       "<br/>\n";
3489                                         }
3490                                         print "</td>\n" .
3491                                               "<td class=\"link\">" .
3492                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3493                                               " | " .
3494                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3495                                         print "</td>\n" .
3496                                               "</tr>\n";
3497                                 }
3498                                 %co = parse_commit($1);
3499                         }
3500                 }
3501                 close $fd;
3502         }
3503         print "</table>\n";
3504         git_footer_html();
3505 }
3506
3507 sub git_shortlog {
3508         my $head = git_get_head_hash($project);
3509         if (!defined $hash) {
3510                 $hash = $head;
3511         }
3512         if (!defined $page) {
3513                 $page = 0;
3514         }
3515         my $refs = git_get_references();
3516
3517         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3518         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3519                 or die_error(undef, "Open git-rev-list failed");
3520         my @revlist = map { chomp; $_ } <$fd>;
3521         close $fd;
3522
3523         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3524         my $next_link = '';
3525         if ($#revlist >= (100 * ($page+1)-1)) {
3526                 $next_link =
3527                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3528                                  -title => "Alt-n"}, "next");
3529         }
3530
3531
3532         git_header_html();
3533         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3534         git_print_header_div('summary', $project);
3535
3536         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3537
3538         git_footer_html();
3539 }
3540
3541 ## ......................................................................
3542 ## feeds (RSS, OPML)
3543
3544 sub git_rss {
3545         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3546         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3547                 or die_error(undef, "Open git-rev-list failed");
3548         my @revlist = map { chomp; $_ } <$fd>;
3549         close $fd or die_error(undef, "Reading git-rev-list failed");
3550         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3551         print <<XML;
3552 <?xml version="1.0" encoding="utf-8"?>
3553 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3554 <channel>
3555 <title>$project $my_uri $my_url</title>
3556 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3557 <description>$project log</description>
3558 <language>en</language>
3559 XML
3560
3561         for (my $i = 0; $i <= $#revlist; $i++) {
3562                 my $commit = $revlist[$i];
3563                 my %co = parse_commit($commit);
3564                 # we read 150, we always show 30 and the ones more recent than 48 hours
3565                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3566                         last;
3567                 }
3568                 my %cd = parse_date($co{'committer_epoch'});
3569                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3570                         $co{'parent'}, $co{'id'}
3571                         or next;
3572                 my @difftree = map { chomp; $_ } <$fd>;
3573                 close $fd
3574                         or next;
3575                 print "<item>\n" .
3576                       "<title>" .
3577                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3578                       "</title>\n" .
3579                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3580                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3581                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3582                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3583                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3584                       "<content:encoded>" .
3585                       "<![CDATA[\n";
3586                 my $comment = $co{'comment'};
3587                 foreach my $line (@$comment) {
3588                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3589                         print "$line<br/>\n";
3590                 }
3591                 print "<br/>\n";
3592                 foreach my $line (@difftree) {
3593                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3594                                 next;
3595                         }
3596                         my $file = esc_html(unquote($7));
3597                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3598                         print "$file<br/>\n";
3599                 }
3600                 print "]]>\n" .
3601                       "</content:encoded>\n" .
3602                       "</item>\n";
3603         }
3604         print "</channel></rss>";
3605 }
3606
3607 sub git_opml {
3608         my @list = git_get_projects_list();
3609
3610         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3611         print <<XML;
3612 <?xml version="1.0" encoding="utf-8"?>
3613 <opml version="1.0">
3614 <head>
3615   <title>$site_name Git OPML Export</title>
3616 </head>
3617 <body>
3618 <outline text="git RSS feeds">
3619 XML
3620
3621         foreach my $pr (@list) {
3622                 my %proj = %$pr;
3623                 my $head = git_get_head_hash($proj{'path'});
3624                 if (!defined $head) {
3625                         next;
3626                 }
3627                 $git_dir = "$projectroot/$proj{'path'}";
3628                 my %co = parse_commit($head);
3629                 if (!%co) {
3630                         next;
3631                 }
3632
3633                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3634                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3635                 my $html = "$my_url?p=$proj{'path'};a=summary";
3636                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3637         }
3638         print <<XML;
3639 </outline>
3640 </body>
3641 </opml>
3642 XML
3643 }