Lady’s Gitweb - Gitweb/blob - 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 # $GITWEB_CONFIG as necessary.
  78 our %feature = (
  79         # feature => {
  80         #       'sub' => feature-sub (subroutine),
  81         #       'override' => allow-override (boolean),
  82         #       'default' => [ default options...] (array reference)}
  83         #
  84         # if feature is overridable (it means that allow-override has true value,
  85         # then feature-sub will be called with default options as parameters;
  86         # return value of feature-sub indicates if to enable specified feature
  87         #
  88         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  89
  90         'blame' => {
  91                 'sub' => \&feature_blame,
  92                 'override' => 0,
  93                 'default' => [0]},
  94
  95         'snapshot' => {
  96                 'sub' => \&feature_snapshot,
  97                 'override' => 0,
  98                 #         => [content-encoding, suffix, program]
  99                 'default' => ['x-gzip', 'gz', 'gzip']},
 100
 101         'pickaxe' => {
 102                 'sub' => \&feature_pickaxe,
 103                 'override' => 0,
 104                 'default' => [1]},
 105
 106         'pathinfo' => {
 107                 'override' => 0,
 108                 'default' => [0]},
 109 );
 110
 111 sub gitweb_check_feature {
 112         my ($name) = @_;
 113         return unless exists $feature{$name};
 114         my ($sub, $override, @defaults) = (
 115                 $feature{$name}{'sub'},
 116                 $feature{$name}{'override'},
 117                 @{$feature{$name}{'default'}});
 118         if (!$override) { return @defaults; }
 119         return $sub->(@defaults);
 120 }
 121
 122 # To enable system wide have in $GITWEB_CONFIG
 123 # $feature{'blame'}{'default'} = [1];
 124 # To have project specific config enable override in $GITWEB_CONFIG
 125 # $feature{'blame'}{'override'} = 1;
 126 # and in project config gitweb.blame = 0|1;
 127
 128 sub feature_blame {
 129         my ($val) = git_get_project_config('blame', '--bool');
 130
 131         if ($val eq 'true') {
 132                 return 1;
 133         } elsif ($val eq 'false') {
 134                 return 0;
 135         }
 136
 137         return $_[0];
 138 }
 139
 140 # To disable system wide have in $GITWEB_CONFIG
 141 # $feature{'snapshot'}{'default'} = [undef];
 142 # To have project specific config enable override in $GITWEB_CONFIG
 143 # $feature{'blame'}{'override'} = 1;
 144 # and in project config  gitweb.snapshot = none|gzip|bzip2
 145
 146 sub feature_snapshot {
 147         my ($ctype, $suffix, $command) = @_;
 148
 149         my ($val) = git_get_project_config('snapshot');
 150
 151         if ($val eq 'gzip') {
 152                 return ('x-gzip', 'gz', 'gzip');
 153         } elsif ($val eq 'bzip2') {
 154                 return ('x-bzip2', 'bz2', 'bzip2');
 155         } elsif ($val eq 'none') {
 156                 return ();
 157         }
 158
 159         return ($ctype, $suffix, $command);
 160 }
 161
 162 sub gitweb_have_snapshot {
 163         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 164         my $have_snapshot = (defined $ctype && defined $suffix);
 165
 166         return $have_snapshot;
 167 }
 168
 169 # To enable system wide have in $GITWEB_CONFIG
 170 # $feature{'pickaxe'}{'default'} = [1];
 171 # To have project specific config enable override in $GITWEB_CONFIG
 172 # $feature{'pickaxe'}{'override'} = 1;
 173 # and in project config gitweb.pickaxe = 0|1;
 174
 175 sub feature_pickaxe {
 176         my ($val) = git_get_project_config('pickaxe', '--bool');
 177
 178         if ($val eq 'true') {
 179                 return (1);
 180         } elsif ($val eq 'false') {
 181                 return (0);
 182         }
 183
 184         return ($_[0]);
 185 }
 186
 187 # checking HEAD file with -e is fragile if the repository was
 188 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 189 # and then pruned.
 190 sub check_head_link {
 191         my ($dir) = @_;
 192         my $headfile = "$dir/HEAD";
 193         return ((-e $headfile) ||
 194                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 195 }
 196
 197 sub check_export_ok {
 198         my ($dir) = @_;
 199         return (check_head_link($dir) &&
 200                 (!$export_ok || -e "$dir/$export_ok"));
 201 }
 202
 203 # rename detection options for git-diff and git-diff-tree
 204 # - default is '-M', with the cost proportional to
 205 #   (number of removed files) * (number of new files).
 206 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 207 #   (number of changed files + number of removed files) * (number of new files)
 208 # - even more costly is '-C', '--find-copies-harder' with cost
 209 #   (number of files in the original tree) * (number of new files)
 210 # - one might want to include '-B' option, e.g. '-B', '-M'
 211 our @diff_opts = ('-M'); # taken from git_commit
 212
 213 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 214 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 215
 216 # version of the core git binary
 217 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 218
 219 $projects_list ||= $projectroot;
 220
 221 # ======================================================================
 222 # input validation and dispatch
 223 our $action = $cgi->param('a');
 224 if (defined $action) {
 225         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 226                 die_error(undef, "Invalid action parameter");
 227         }
 228 }
 229
 230 # parameters which are pathnames
 231 our $project = $cgi->param('p');
 232 if (defined $project) {
 233         if (!validate_pathname($project) ||
 234             !(-d "$projectroot/$project") ||
 235             !check_head_link("$projectroot/$project") ||
 236             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 237             ($strict_export && !project_in_list($project))) {
 238                 undef $project;
 239                 die_error(undef, "No such project");
 240         }
 241 }
 242
 243 our $file_name = $cgi->param('f');
 244 if (defined $file_name) {
 245         if (!validate_pathname($file_name)) {
 246                 die_error(undef, "Invalid file parameter");
 247         }
 248 }
 249
 250 our $file_parent = $cgi->param('fp');
 251 if (defined $file_parent) {
 252         if (!validate_pathname($file_parent)) {
 253                 die_error(undef, "Invalid file parent parameter");
 254         }
 255 }
 256
 257 # parameters which are refnames
 258 our $hash = $cgi->param('h');
 259 if (defined $hash) {
 260         if (!validate_refname($hash)) {
 261                 die_error(undef, "Invalid hash parameter");
 262         }
 263 }
 264
 265 our $hash_parent = $cgi->param('hp');
 266 if (defined $hash_parent) {
 267         if (!validate_refname($hash_parent)) {
 268                 die_error(undef, "Invalid hash parent parameter");
 269         }
 270 }
 271
 272 our $hash_base = $cgi->param('hb');
 273 if (defined $hash_base) {
 274         if (!validate_refname($hash_base)) {
 275                 die_error(undef, "Invalid hash base parameter");
 276         }
 277 }
 278
 279 our $hash_parent_base = $cgi->param('hpb');
 280 if (defined $hash_parent_base) {
 281         if (!validate_refname($hash_parent_base)) {
 282                 die_error(undef, "Invalid hash parent base parameter");
 283         }
 284 }
 285
 286 # other parameters
 287 our $page = $cgi->param('pg');
 288 if (defined $page) {
 289         if ($page =~ m/[^0-9]/) {
 290                 die_error(undef, "Invalid page parameter");
 291         }
 292 }
 293
 294 our $searchtext = $cgi->param('s');
 295 if (defined $searchtext) {
 296         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 297                 die_error(undef, "Invalid search parameter");
 298         }
 299         $searchtext = quotemeta $searchtext;
 300 }
 301
 302 # now read PATH_INFO and use it as alternative to parameters
 303 sub evaluate_path_info {
 304         return if defined $project;
 305         my $path_info = $ENV{"PATH_INFO"};
 306         return if !$path_info;
 307         $path_info =~ s,^/+,,;
 308         return if !$path_info;
 309         # find which part of PATH_INFO is project
 310         $project = $path_info;
 311         $project =~ s,/+$,,;
 312         while ($project && !check_head_link("$projectroot/$project")) {
 313                 $project =~ s,/*[^/]*$,,;
 314         }
 315         # validate project
 316         $project = validate_pathname($project);
 317         if (!$project ||
 318             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 319             ($strict_export && !project_in_list($project))) {
 320                 undef $project;
 321                 return;
 322         }
 323         # do not change any parameters if an action is given using the query string
 324         return if $action;
 325         $path_info =~ s,^$project/*,,;
 326         my ($refname, $pathname) = split(/:/, $path_info, 2);
 327         if (defined $pathname) {
 328                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 329                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 330                 $pathname =~ s,^/+,,;
 331                 if (!$pathname || substr($pathname, -1) eq "/") {
 332                         $action  ||= "tree";
 333                         $pathname =~ s,/$,,;
 334                 } else {
 335                         $action  ||= "blob_plain";
 336                 }
 337                 $hash_base ||= validate_refname($refname);
 338                 $file_name ||= validate_pathname($pathname);
 339         } elsif (defined $refname) {
 340                 # we got "project.git/branch"
 341                 $action ||= "shortlog";
 342                 $hash   ||= validate_refname($refname);
 343         }
 344 }
 345 evaluate_path_info();
 346
 347 # path to the current git repository
 348 our $git_dir;
 349 $git_dir = "$projectroot/$project" if $project;
 350
 351 # dispatch
 352 my %actions = (
 353         "blame" => \&git_blame2,
 354         "blobdiff" => \&git_blobdiff,
 355         "blobdiff_plain" => \&git_blobdiff_plain,
 356         "blob" => \&git_blob,
 357         "blob_plain" => \&git_blob_plain,
 358         "commitdiff" => \&git_commitdiff,
 359         "commitdiff_plain" => \&git_commitdiff_plain,
 360         "commit" => \&git_commit,
 361         "heads" => \&git_heads,
 362         "history" => \&git_history,
 363         "log" => \&git_log,
 364         "rss" => \&git_rss,
 365         "search" => \&git_search,
 366         "shortlog" => \&git_shortlog,
 367         "summary" => \&git_summary,
 368         "tag" => \&git_tag,
 369         "tags" => \&git_tags,
 370         "tree" => \&git_tree,
 371         "snapshot" => \&git_snapshot,
 372         # those below don't need $project
 373         "opml" => \&git_opml,
 374         "project_list" => \&git_project_list,
 375         "project_index" => \&git_project_index,
 376 );
 377
 378 if (defined $project) {
 379         $action ||= 'summary';
 380 } else {
 381         $action ||= 'project_list';
 382 }
 383 if (!defined($actions{$action})) {
 384         die_error(undef, "Unknown action");
 385 }
 386 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 387     !$project) {
 388         die_error(undef, "Project needed");
 389 }
 390 $actions{$action}->();
 391 exit;
 392
 393 ## ======================================================================
 394 ## action links
 395
 396 sub href(%) {
 397         my %params = @_;
 398         my $href = $my_uri;
 399
 400         my @mapping = (
 401                 project => "p",
 402                 action => "a",
 403                 file_name => "f",
 404                 file_parent => "fp",
 405                 hash => "h",
 406                 hash_parent => "hp",
 407                 hash_base => "hb",
 408                 hash_parent_base => "hpb",
 409                 page => "pg",
 410                 order => "o",
 411                 searchtext => "s",
 412         );
 413         my %mapping = @mapping;
 414
 415         $params{'project'} = $project unless exists $params{'project'};
 416
 417         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 418         if ($use_pathinfo) {
 419                 # use PATH_INFO for project name
 420                 $href .= "/$params{'project'}" if defined $params{'project'};
 421                 delete $params{'project'};
 422
 423                 # Summary just uses the project path URL
 424                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 425                         delete $params{'action'};
 426                 }
 427         }
 428
 429         # now encode the parameters explicitly
 430         my @result = ();
 431         for (my $i = 0; $i < @mapping; $i += 2) {
 432                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 433                 if (defined $params{$name}) {
 434                         push @result, $symbol . "=" . esc_param($params{$name});
 435                 }
 436         }
 437         $href .= "?" . join(';', @result) if scalar @result;
 438
 439         return $href;
 440 }
 441
 442
 443 ## ======================================================================
 444 ## validation, quoting/unquoting and escaping
 445
 446 sub validate_pathname {
 447         my $input = shift || return undef;
 448
 449         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 450         # at the beginning, at the end, and between slashes.
 451         # also this catches doubled slashes
 452         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 453                 return undef;
 454         }
 455         # no null characters
 456         if ($input =~ m!\0!) {
 457                 return undef;
 458         }
 459         return $input;
 460 }
 461
 462 sub validate_refname {
 463         my $input = shift || return undef;
 464
 465         # textual hashes are O.K.
 466         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 467                 return $input;
 468         }
 469         # it must be correct pathname
 470         $input = validate_pathname($input)
 471                 or return undef;
 472         # restrictions on ref name according to git-check-ref-format
 473         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 474                 return undef;
 475         }
 476         return $input;
 477 }
 478
 479 # quote unsafe chars, but keep the slash, even when it's not
 480 # correct, but quoted slashes look too horrible in bookmarks
 481 sub esc_param {
 482         my $str = shift;
 483         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 484         $str =~ s/\+/%2B/g;
 485         $str =~ s/ /\+/g;
 486         return $str;
 487 }
 488
 489 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 490 sub esc_url {
 491         my $str = shift;
 492         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 493         $str =~ s/\+/%2B/g;
 494         $str =~ s/ /\+/g;
 495         return $str;
 496 }
 497
 498 # replace invalid utf8 character with SUBSTITUTION sequence
 499 sub esc_html {
 500         my $str = shift;
 501         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 502         $str = escapeHTML($str);
 503         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 504         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 505         return $str;
 506 }
 507
 508 # git may return quoted and escaped filenames
 509 sub unquote {
 510         my $str = shift;
 511         if ($str =~ m/^"(.*)"$/) {
 512                 $str = $1;
 513                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 514         }
 515         return $str;
 516 }
 517
 518 # escape tabs (convert tabs to spaces)
 519 sub untabify {
 520         my $line = shift;
 521
 522         while ((my $pos = index($line, "\t")) != -1) {
 523                 if (my $count = (8 - ($pos % 8))) {
 524                         my $spaces = ' ' x $count;
 525                         $line =~ s/\t/$spaces/;
 526                 }
 527         }
 528
 529         return $line;
 530 }
 531
 532 sub project_in_list {
 533         my $project = shift;
 534         my @list = git_get_projects_list();
 535         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 536 }
 537
 538 ## ----------------------------------------------------------------------
 539 ## HTML aware string manipulation
 540
 541 sub chop_str {
 542         my $str = shift;
 543         my $len = shift;
 544         my $add_len = shift || 10;
 545
 546         # allow only $len chars, but don't cut a word if it would fit in $add_len
 547         # if it doesn't fit, cut it if it's still longer than the dots we would add
 548         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 549         my $body = $1;
 550         my $tail = $2;
 551         if (length($tail) > 4) {
 552                 $tail = " ...";
 553                 $body =~ s/&[^;]*$//; # remove chopped character entities
 554         }
 555         return "$body$tail";
 556 }
 557
 558 ## ----------------------------------------------------------------------
 559 ## functions returning short strings
 560
 561 # CSS class for given age value (in seconds)
 562 sub age_class {
 563         my $age = shift;
 564
 565         if ($age < 60*60*2) {
 566                 return "age0";
 567         } elsif ($age < 60*60*24*2) {
 568                 return "age1";
 569         } else {
 570                 return "age2";
 571         }
 572 }
 573
 574 # convert age in seconds to "nn units ago" string
 575 sub age_string {
 576         my $age = shift;
 577         my $age_str;
 578
 579         if ($age > 60*60*24*365*2) {
 580                 $age_str = (int $age/60/60/24/365);
 581                 $age_str .= " years ago";
 582         } elsif ($age > 60*60*24*(365/12)*2) {
 583                 $age_str = int $age/60/60/24/(365/12);
 584                 $age_str .= " months ago";
 585         } elsif ($age > 60*60*24*7*2) {
 586                 $age_str = int $age/60/60/24/7;
 587                 $age_str .= " weeks ago";
 588         } elsif ($age > 60*60*24*2) {
 589                 $age_str = int $age/60/60/24;
 590                 $age_str .= " days ago";
 591         } elsif ($age > 60*60*2) {
 592                 $age_str = int $age/60/60;
 593                 $age_str .= " hours ago";
 594         } elsif ($age > 60*2) {
 595                 $age_str = int $age/60;
 596                 $age_str .= " min ago";
 597         } elsif ($age > 2) {
 598                 $age_str = int $age;
 599                 $age_str .= " sec ago";
 600         } else {
 601                 $age_str .= " right now";
 602         }
 603         return $age_str;
 604 }
 605
 606 # convert file mode in octal to symbolic file mode string
 607 sub mode_str {
 608         my $mode = oct shift;
 609
 610         if (S_ISDIR($mode & S_IFMT)) {
 611                 return 'drwxr-xr-x';
 612         } elsif (S_ISLNK($mode)) {
 613                 return 'lrwxrwxrwx';
 614         } elsif (S_ISREG($mode)) {
 615                 # git cares only about the executable bit
 616                 if ($mode & S_IXUSR) {
 617                         return '-rwxr-xr-x';
 618                 } else {
 619                         return '-rw-r--r--';
 620                 };
 621         } else {
 622                 return '----------';
 623         }
 624 }
 625
 626 # convert file mode in octal to file type string
 627 sub file_type {
 628         my $mode = shift;
 629
 630         if ($mode !~ m/^[0-7]+$/) {
 631                 return $mode;
 632         } else {
 633                 $mode = oct $mode;
 634         }
 635
 636         if (S_ISDIR($mode & S_IFMT)) {
 637                 return "directory";
 638         } elsif (S_ISLNK($mode)) {
 639                 return "symlink";
 640         } elsif (S_ISREG($mode)) {
 641                 return "file";
 642         } else {
 643                 return "unknown";
 644         }
 645 }
 646
 647 ## ----------------------------------------------------------------------
 648 ## functions returning short HTML fragments, or transforming HTML fragments
 649 ## which don't beling to other sections
 650
 651 # format line of commit message or tag comment
 652 sub format_log_line_html {
 653         my $line = shift;
 654
 655         $line = esc_html($line);
 656         $line =~ s/ /&nbsp;/g;
 657         if ($line =~ m/([0-9a-fA-F]{40})/) {
 658                 my $hash_text = $1;
 659                 if (git_get_type($hash_text) eq "commit") {
 660                         my $link =
 661                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 662                                         -class => "text"}, $hash_text);
 663                         $line =~ s/$hash_text/$link/;
 664                 }
 665         }
 666         return $line;
 667 }
 668
 669 # format marker of refs pointing to given object
 670 sub format_ref_marker {
 671         my ($refs, $id) = @_;
 672         my $markers = '';
 673
 674         if (defined $refs->{$id}) {
 675                 foreach my $ref (@{$refs->{$id}}) {
 676                         my ($type, $name) = qw();
 677                         # e.g. tags/v2.6.11 or heads/next
 678                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 679                                 $type = $1;
 680                                 $name = $2;
 681                         } else {
 682                                 $type = "ref";
 683                                 $name = $ref;
 684                         }
 685
 686                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 687                 }
 688         }
 689
 690         if ($markers) {
 691                 return ' <span class="refs">'. $markers . '</span>';
 692         } else {
 693                 return "";
 694         }
 695 }
 696
 697 # format, perhaps shortened and with markers, title line
 698 sub format_subject_html {
 699         my ($long, $short, $href, $extra) = @_;
 700         $extra = '' unless defined($extra);
 701
 702         if (length($short) < length($long)) {
 703                 return $cgi->a({-href => $href, -class => "list subject",
 704                                 -title => decode("utf8", $long, Encode::FB_DEFAULT)},
 705                        esc_html($short) . $extra);
 706         } else {
 707                 return $cgi->a({-href => $href, -class => "list subject"},
 708                        esc_html($long)  . $extra);
 709         }
 710 }
 711
 712 sub format_diff_line {
 713         my $line = shift;
 714         my $char = substr($line, 0, 1);
 715         my $diff_class = "";
 716
 717         chomp $line;
 718
 719         if ($char eq '+') {
 720                 $diff_class = " add";
 721         } elsif ($char eq "-") {
 722                 $diff_class = " rem";
 723         } elsif ($char eq "@") {
 724                 $diff_class = " chunk_header";
 725         } elsif ($char eq "\\") {
 726                 $diff_class = " incomplete";
 727         }
 728         $line = untabify($line);
 729         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 730 }
 731
 732 ## ----------------------------------------------------------------------
 733 ## git utility subroutines, invoking git commands
 734
 735 # returns path to the core git executable and the --git-dir parameter as list
 736 sub git_cmd {
 737         return $GIT, '--git-dir='.$git_dir;
 738 }
 739
 740 # returns path to the core git executable and the --git-dir parameter as string
 741 sub git_cmd_str {
 742         return join(' ', git_cmd());
 743 }
 744
 745 # get HEAD ref of given project as hash
 746 sub git_get_head_hash {
 747         my $project = shift;
 748         my $o_git_dir = $git_dir;
 749         my $retval = undef;
 750         $git_dir = "$projectroot/$project";
 751         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 752                 my $head = <$fd>;
 753                 close $fd;
 754                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 755                         $retval = $1;
 756                 }
 757         }
 758         if (defined $o_git_dir) {
 759                 $git_dir = $o_git_dir;
 760         }
 761         return $retval;
 762 }
 763
 764 # get type of given object
 765 sub git_get_type {
 766         my $hash = shift;
 767
 768         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 769         my $type = <$fd>;
 770         close $fd or return;
 771         chomp $type;
 772         return $type;
 773 }
 774
 775 sub git_get_project_config {
 776         my ($key, $type) = @_;
 777
 778         return unless ($key);
 779         $key =~ s/^gitweb\.//;
 780         return if ($key =~ m/\W/);
 781
 782         my @x = (git_cmd(), 'repo-config');
 783         if (defined $type) { push @x, $type; }
 784         push @x, "--get";
 785         push @x, "gitweb.$key";
 786         my $val = qx(@x);
 787         chomp $val;
 788         return ($val);
 789 }
 790
 791 # get hash of given path at given ref
 792 sub git_get_hash_by_path {
 793         my $base = shift;
 794         my $path = shift || return undef;
 795         my $type = shift;
 796
 797         $path =~ s,/+$,,;
 798
 799         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 800                 or die_error(undef, "Open git-ls-tree failed");
 801         my $line = <$fd>;
 802         close $fd or return undef;
 803
 804         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 805         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 806         if (defined $type && $type ne $2) {
 807                 # type doesn't match
 808                 return undef;
 809         }
 810         return $3;
 811 }
 812
 813 ## ......................................................................
 814 ## git utility functions, directly accessing git repository
 815
 816 sub git_get_project_description {
 817         my $path = shift;
 818
 819         open my $fd, "$projectroot/$path/description" or return undef;
 820         my $descr = <$fd>;
 821         close $fd;
 822         chomp $descr;
 823         return $descr;
 824 }
 825
 826 sub git_get_project_url_list {
 827         my $path = shift;
 828
 829         open my $fd, "$projectroot/$path/cloneurl" or return;
 830         my @git_project_url_list = map { chomp; $_ } <$fd>;
 831         close $fd;
 832
 833         return wantarray ? @git_project_url_list : \@git_project_url_list;
 834 }
 835
 836 sub git_get_projects_list {
 837         my @list;
 838
 839         if (-d $projects_list) {
 840                 # search in directory
 841                 my $dir = $projects_list;
 842                 my $pfxlen = length("$dir");
 843
 844                 File::Find::find({
 845                         follow_fast => 1, # follow symbolic links
 846                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 847                         wanted => sub {
 848                                 # skip project-list toplevel, if we get it.
 849                                 return if (m!^[/.]$!);
 850                                 # only directories can be git repositories
 851                                 return unless (-d $_);
 852
 853                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 854                                 # we check related file in $projectroot
 855                                 if (check_export_ok("$projectroot/$subdir")) {
 856                                         push @list, { path => $subdir };
 857                                         $File::Find::prune = 1;
 858                                 }
 859                         },
 860                 }, "$dir");
 861
 862         } elsif (-f $projects_list) {
 863                 # read from file(url-encoded):
 864                 # 'git%2Fgit.git Linus+Torvalds'
 865                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 866                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 867                 open my ($fd), $projects_list or return;
 868                 while (my $line = <$fd>) {
 869                         chomp $line;
 870                         my ($path, $owner) = split ' ', $line;
 871                         $path = unescape($path);
 872                         $owner = unescape($owner);
 873                         if (!defined $path) {
 874                                 next;
 875                         }
 876                         if (check_export_ok("$projectroot/$path")) {
 877                                 my $pr = {
 878                                         path => $path,
 879                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 880                                 };
 881                                 push @list, $pr
 882                         }
 883                 }
 884                 close $fd;
 885         }
 886         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 887         return @list;
 888 }
 889
 890 sub git_get_project_owner {
 891         my $project = shift;
 892         my $owner;
 893
 894         return undef unless $project;
 895
 896         # read from file (url-encoded):
 897         # 'git%2Fgit.git Linus+Torvalds'
 898         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 899         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 900         if (-f $projects_list) {
 901                 open (my $fd , $projects_list);
 902                 while (my $line = <$fd>) {
 903                         chomp $line;
 904                         my ($pr, $ow) = split ' ', $line;
 905                         $pr = unescape($pr);
 906                         $ow = unescape($ow);
 907                         if ($pr eq $project) {
 908                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 909                                 last;
 910                         }
 911                 }
 912                 close $fd;
 913         }
 914         if (!defined $owner) {
 915                 $owner = get_file_owner("$projectroot/$project");
 916         }
 917
 918         return $owner;
 919 }
 920
 921 sub git_get_references {
 922         my $type = shift || "";
 923         my %refs;
 924         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 925         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 926         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
 927                 or return;
 928
 929         while (my $line = <$fd>) {
 930                 chomp $line;
 931                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 932                         if (defined $refs{$1}) {
 933                                 push @{$refs{$1}}, $2;
 934                         } else {
 935                                 $refs{$1} = [ $2 ];
 936                         }
 937                 }
 938         }
 939         close $fd or return;
 940         return \%refs;
 941 }
 942
 943 sub git_get_rev_name_tags {
 944         my $hash = shift || return undef;
 945
 946         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 947                 or return;
 948         my $name_rev = <$fd>;
 949         close $fd;
 950
 951         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 952                 return $1;
 953         } else {
 954                 # catches also '$hash undefined' output
 955                 return undef;
 956         }
 957 }
 958
 959 ## ----------------------------------------------------------------------
 960 ## parse to hash functions
 961
 962 sub parse_date {
 963         my $epoch = shift;
 964         my $tz = shift || "-0000";
 965
 966         my %date;
 967         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 968         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 969         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 970         $date{'hour'} = $hour;
 971         $date{'minute'} = $min;
 972         $date{'mday'} = $mday;
 973         $date{'day'} = $days[$wday];
 974         $date{'month'} = $months[$mon];
 975         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 976                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 977         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 978                              $mday, $months[$mon], $hour ,$min;
 979
 980         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 981         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 982         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 983         $date{'hour_local'} = $hour;
 984         $date{'minute_local'} = $min;
 985         $date{'tz_local'} = $tz;
 986         return %date;
 987 }
 988
 989 sub parse_tag {
 990         my $tag_id = shift;
 991         my %tag;
 992         my @comment;
 993
 994         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 995         $tag{'id'} = $tag_id;
 996         while (my $line = <$fd>) {
 997                 chomp $line;
 998                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 999                         $tag{'object'} = $1;
1000                 } elsif ($line =~ m/^type (.+)$/) {
1001                         $tag{'type'} = $1;
1002                 } elsif ($line =~ m/^tag (.+)$/) {
1003                         $tag{'name'} = $1;
1004                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1005                         $tag{'author'} = $1;
1006                         $tag{'epoch'} = $2;
1007                         $tag{'tz'} = $3;
1008                 } elsif ($line =~ m/--BEGIN/) {
1009                         push @comment, $line;
1010                         last;
1011                 } elsif ($line eq "") {
1012                         last;
1013                 }
1014         }
1015         push @comment, <$fd>;
1016         $tag{'comment'} = \@comment;
1017         close $fd or return;
1018         if (!defined $tag{'name'}) {
1019                 return
1020         };
1021         return %tag
1022 }
1023
1024 sub parse_commit {
1025         my $commit_id = shift;
1026         my $commit_text = shift;
1027
1028         my @commit_lines;
1029         my %co;
1030
1031         if (defined $commit_text) {
1032                 @commit_lines = @$commit_text;
1033         } else {
1034                 $/ = "\0";
1035                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
1036                         or return;
1037                 @commit_lines = split '\n', <$fd>;
1038                 close $fd or return;
1039                 $/ = "\n";
1040                 pop @commit_lines;
1041         }
1042         my $header = shift @commit_lines;
1043         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1044                 return;
1045         }
1046         ($co{'id'}, my @parents) = split ' ', $header;
1047         $co{'parents'} = \@parents;
1048         $co{'parent'} = $parents[0];
1049         while (my $line = shift @commit_lines) {
1050                 last if $line eq "\n";
1051                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1052                         $co{'tree'} = $1;
1053                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1054                         $co{'author'} = $1;
1055                         $co{'author_epoch'} = $2;
1056                         $co{'author_tz'} = $3;
1057                         if ($co{'author'} =~ m/^([^<]+) </) {
1058                                 $co{'author_name'} = $1;
1059                         } else {
1060                                 $co{'author_name'} = $co{'author'};
1061                         }
1062                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1063                         $co{'committer'} = $1;
1064                         $co{'committer_epoch'} = $2;
1065                         $co{'committer_tz'} = $3;
1066                         $co{'committer_name'} = $co{'committer'};
1067                         $co{'committer_name'} =~ s/ <.*//;
1068                 }
1069         }
1070         if (!defined $co{'tree'}) {
1071                 return;
1072         };
1073
1074         foreach my $title (@commit_lines) {
1075                 $title =~ s/^    //;
1076                 if ($title ne "") {
1077                         $co{'title'} = chop_str($title, 80, 5);
1078                         # remove leading stuff of merges to make the interesting part visible
1079                         if (length($title) > 50) {
1080                                 $title =~ s/^Automatic //;
1081                                 $title =~ s/^merge (of|with) /Merge ... /i;
1082                                 if (length($title) > 50) {
1083                                         $title =~ s/(http|rsync):\/\///;
1084                                 }
1085                                 if (length($title) > 50) {
1086                                         $title =~ s/(master|www|rsync)\.//;
1087                                 }
1088                                 if (length($title) > 50) {
1089                                         $title =~ s/kernel.org:?//;
1090                                 }
1091                                 if (length($title) > 50) {
1092                                         $title =~ s/\/pub\/scm//;
1093                                 }
1094                         }
1095                         $co{'title_short'} = chop_str($title, 50, 5);
1096                         last;
1097                 }
1098         }
1099         # remove added spaces
1100         foreach my $line (@commit_lines) {
1101                 $line =~ s/^    //;
1102         }
1103         $co{'comment'} = \@commit_lines;
1104
1105         my $age = time - $co{'committer_epoch'};
1106         $co{'age'} = $age;
1107         $co{'age_string'} = age_string($age);
1108         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1109         if ($age > 60*60*24*7*2) {
1110                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1111                 $co{'age_string_age'} = $co{'age_string'};
1112         } else {
1113                 $co{'age_string_date'} = $co{'age_string'};
1114                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1115         }
1116         return %co;
1117 }
1118
1119 # parse ref from ref_file, given by ref_id, with given type
1120 sub parse_ref {
1121         my $ref_file = shift;
1122         my $ref_id = shift;
1123         my $type = shift || git_get_type($ref_id);
1124         my %ref_item;
1125
1126         $ref_item{'type'} = $type;
1127         $ref_item{'id'} = $ref_id;
1128         $ref_item{'epoch'} = 0;
1129         $ref_item{'age'} = "unknown";
1130         if ($type eq "tag") {
1131                 my %tag = parse_tag($ref_id);
1132                 $ref_item{'comment'} = $tag{'comment'};
1133                 if ($tag{'type'} eq "commit") {
1134                         my %co = parse_commit($tag{'object'});
1135                         $ref_item{'epoch'} = $co{'committer_epoch'};
1136                         $ref_item{'age'} = $co{'age_string'};
1137                 } elsif (defined($tag{'epoch'})) {
1138                         my $age = time - $tag{'epoch'};
1139                         $ref_item{'epoch'} = $tag{'epoch'};
1140                         $ref_item{'age'} = age_string($age);
1141                 }
1142                 $ref_item{'reftype'} = $tag{'type'};
1143                 $ref_item{'name'} = $tag{'name'};
1144                 $ref_item{'refid'} = $tag{'object'};
1145         } elsif ($type eq "commit"){
1146                 my %co = parse_commit($ref_id);
1147                 $ref_item{'reftype'} = "commit";
1148                 $ref_item{'name'} = $ref_file;
1149                 $ref_item{'title'} = $co{'title'};
1150                 $ref_item{'refid'} = $ref_id;
1151                 $ref_item{'epoch'} = $co{'committer_epoch'};
1152                 $ref_item{'age'} = $co{'age_string'};
1153         } else {
1154                 $ref_item{'reftype'} = $type;
1155                 $ref_item{'name'} = $ref_file;
1156                 $ref_item{'refid'} = $ref_id;
1157         }
1158
1159         return %ref_item;
1160 }
1161
1162 # parse line of git-diff-tree "raw" output
1163 sub parse_difftree_raw_line {
1164         my $line = shift;
1165         my %res;
1166
1167         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1168         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1169         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1170                 $res{'from_mode'} = $1;
1171                 $res{'to_mode'} = $2;
1172                 $res{'from_id'} = $3;
1173                 $res{'to_id'} = $4;
1174                 $res{'status'} = $5;
1175                 $res{'similarity'} = $6;
1176                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1177                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1178                 } else {
1179                         $res{'file'} = unquote($7);
1180                 }
1181         }
1182         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1183         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1184                 $res{'commit'} = $1;
1185         }
1186
1187         return wantarray ? %res : \%res;
1188 }
1189
1190 # parse line of git-ls-tree output
1191 sub parse_ls_tree_line ($;%) {
1192         my $line = shift;
1193         my %opts = @_;
1194         my %res;
1195
1196         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1197         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1198
1199         $res{'mode'} = $1;
1200         $res{'type'} = $2;
1201         $res{'hash'} = $3;
1202         if ($opts{'-z'}) {
1203                 $res{'name'} = $4;
1204         } else {
1205                 $res{'name'} = unquote($4);
1206         }
1207
1208         return wantarray ? %res : \%res;
1209 }
1210
1211 ## ......................................................................
1212 ## parse to array of hashes functions
1213
1214 sub git_get_refs_list {
1215         my $type = shift || "";
1216         my %refs;
1217         my @reflist;
1218
1219         my @refs;
1220         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1221                 or return;
1222         while (my $line = <$fd>) {
1223                 chomp $line;
1224                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?([^\^]+))(\^\{\})?$/) {
1225                         if (defined $refs{$1}) {
1226                                 push @{$refs{$1}}, $2;
1227                         } else {
1228                                 $refs{$1} = [ $2 ];
1229                         }
1230
1231                         if (! $4) { # unpeeled, direct reference
1232                                 push @refs, { hash => $1, name => $3 }; # without type
1233                         } elsif ($3 eq $refs[-1]{'name'}) {
1234                                 # most likely a tag is followed by its peeled
1235                                 # (deref) one, and when that happens we know the
1236                                 # previous one was of type 'tag'.
1237                                 $refs[-1]{'type'} = "tag";
1238                         }
1239                 }
1240         }
1241         close $fd;
1242
1243         foreach my $ref (@refs) {
1244                 my $ref_file = $ref->{'name'};
1245                 my $ref_id   = $ref->{'hash'};
1246
1247                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1248                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1249
1250                 push @reflist, \%ref_item;
1251         }
1252         # sort refs by age
1253         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1254         return (\@reflist, \%refs);
1255 }
1256
1257 ## ----------------------------------------------------------------------
1258 ## filesystem-related functions
1259
1260 sub get_file_owner {
1261         my $path = shift;
1262
1263         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1264         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1265         if (!defined $gcos) {
1266                 return undef;
1267         }
1268         my $owner = $gcos;
1269         $owner =~ s/[,;].*$//;
1270         return decode("utf8", $owner, Encode::FB_DEFAULT);
1271 }
1272
1273 ## ......................................................................
1274 ## mimetype related functions
1275
1276 sub mimetype_guess_file {
1277         my $filename = shift;
1278         my $mimemap = shift;
1279         -r $mimemap or return undef;
1280
1281         my %mimemap;
1282         open(MIME, $mimemap) or return undef;
1283         while (<MIME>) {
1284                 next if m/^#/; # skip comments
1285                 my ($mime, $exts) = split(/\t+/);
1286                 if (defined $exts) {
1287                         my @exts = split(/\s+/, $exts);
1288                         foreach my $ext (@exts) {
1289                                 $mimemap{$ext} = $mime;
1290                         }
1291                 }
1292         }
1293         close(MIME);
1294
1295         $filename =~ /\.([^.]*)$/;
1296         return $mimemap{$1};
1297 }
1298
1299 sub mimetype_guess {
1300         my $filename = shift;
1301         my $mime;
1302         $filename =~ /\./ or return undef;
1303
1304         if ($mimetypes_file) {
1305                 my $file = $mimetypes_file;
1306                 if ($file !~ m!^/!) { # if it is relative path
1307                         # it is relative to project
1308                         $file = "$projectroot/$project/$file";
1309                 }
1310                 $mime = mimetype_guess_file($filename, $file);
1311         }
1312         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1313         return $mime;
1314 }
1315
1316 sub blob_mimetype {
1317         my $fd = shift;
1318         my $filename = shift;
1319
1320         if ($filename) {
1321                 my $mime = mimetype_guess($filename);
1322                 $mime and return $mime;
1323         }
1324
1325         # just in case
1326         return $default_blob_plain_mimetype unless $fd;
1327
1328         if (-T $fd) {
1329                 return 'text/plain' .
1330                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1331         } elsif (! $filename) {
1332                 return 'application/octet-stream';
1333         } elsif ($filename =~ m/\.png$/i) {
1334                 return 'image/png';
1335         } elsif ($filename =~ m/\.gif$/i) {
1336                 return 'image/gif';
1337         } elsif ($filename =~ m/\.jpe?g$/i) {
1338                 return 'image/jpeg';
1339         } else {
1340                 return 'application/octet-stream';
1341         }
1342 }
1343
1344 ## ======================================================================
1345 ## functions printing HTML: header, footer, error page
1346
1347 sub git_header_html {
1348         my $status = shift || "200 OK";
1349         my $expires = shift;
1350
1351         my $title = "$site_name git";
1352         if (defined $project) {
1353                 $title .= " - $project";
1354                 if (defined $action) {
1355                         $title .= "/$action";
1356                         if (defined $file_name) {
1357                                 $title .= " - " . esc_html($file_name);
1358                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1359                                         $title .= "/";
1360                                 }
1361                         }
1362                 }
1363         }
1364         my $content_type;
1365         # require explicit support from the UA if we are to send the page as
1366         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1367         # we have to do this because MSIE sometimes globs '*/*', pretending to
1368         # support xhtml+xml but choking when it gets what it asked for.
1369         if (defined $cgi->http('HTTP_ACCEPT') &&
1370             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1371             $cgi->Accept('application/xhtml+xml') != 0) {
1372                 $content_type = 'application/xhtml+xml';
1373         } else {
1374                 $content_type = 'text/html';
1375         }
1376         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1377                            -status=> $status, -expires => $expires);
1378         print <<EOF;
1379 <?xml version="1.0" encoding="utf-8"?>
1380 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1381 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1382 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1383 <!-- git core binaries version $git_version -->
1384 <head>
1385 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1386 <meta name="generator" content="gitweb/$version git/$git_version"/>
1387 <meta name="robots" content="index, nofollow"/>
1388 <title>$title</title>
1389 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1390 EOF
1391         if (defined $project) {
1392                 printf('<link rel="alternate" title="%s log" '.
1393                        'href="%s" type="application/rss+xml"/>'."\n",
1394                        esc_param($project), href(action=>"rss"));
1395         } else {
1396                 printf('<link rel="alternate" title="%s projects list" '.
1397                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1398                        $site_name, href(project=>undef, action=>"project_index"));
1399                 printf('<link rel="alternate" title="%s projects logs" '.
1400                        'href="%s" type="text/x-opml"/>'."\n",
1401                        $site_name, href(project=>undef, action=>"opml"));
1402         }
1403         if (defined $favicon) {
1404                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1405         }
1406
1407         print "</head>\n" .
1408               "<body>\n" .
1409               "<div class=\"page_header\">\n" .
1410               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1411               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1412               "</a>\n";
1413         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1414         if (defined $project) {
1415                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1416                 if (defined $action) {
1417                         print " / $action";
1418                 }
1419                 print "\n";
1420                 if (!defined $searchtext) {
1421                         $searchtext = "";
1422                 }
1423                 my $search_hash;
1424                 if (defined $hash_base) {
1425                         $search_hash = $hash_base;
1426                 } elsif (defined $hash) {
1427                         $search_hash = $hash;
1428                 } else {
1429                         $search_hash = "HEAD";
1430                 }
1431                 $cgi->param("a", "search");
1432                 $cgi->param("h", $search_hash);
1433                 print $cgi->startform(-method => "get", -action => $my_uri) .
1434                       "<div class=\"search\">\n" .
1435                       $cgi->hidden(-name => "p") . "\n" .
1436                       $cgi->hidden(-name => "a") . "\n" .
1437                       $cgi->hidden(-name => "h") . "\n" .
1438                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1439                       "</div>" .
1440                       $cgi->end_form() . "\n";
1441         }
1442         print "</div>\n";
1443 }
1444
1445 sub git_footer_html {
1446         print "<div class=\"page_footer\">\n";
1447         if (defined $project) {
1448                 my $descr = git_get_project_description($project);
1449                 if (defined $descr) {
1450                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1451                 }
1452                 print $cgi->a({-href => href(action=>"rss"),
1453                               -class => "rss_logo"}, "RSS") . "\n";
1454         } else {
1455                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1456                               -class => "rss_logo"}, "OPML") . " ";
1457                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1458                               -class => "rss_logo"}, "TXT") . "\n";
1459         }
1460         print "</div>\n" .
1461               "</body>\n" .
1462               "</html>";
1463 }
1464
1465 sub die_error {
1466         my $status = shift || "403 Forbidden";
1467         my $error = shift || "Malformed query, file missing or permission denied";
1468
1469         git_header_html($status);
1470         print <<EOF;
1471 <div class="page_body">
1472 <br /><br />
1473 $status - $error
1474 <br />
1475 </div>
1476 EOF
1477         git_footer_html();
1478         exit;
1479 }
1480
1481 ## ----------------------------------------------------------------------
1482 ## functions printing or outputting HTML: navigation
1483
1484 sub git_print_page_nav {
1485         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1486         $extra = '' if !defined $extra; # pager or formats
1487
1488         my @navs = qw(summary shortlog log commit commitdiff tree);
1489         if ($suppress) {
1490                 @navs = grep { $_ ne $suppress } @navs;
1491         }
1492
1493         my %arg = map { $_ => {action=>$_} } @navs;
1494         if (defined $head) {
1495                 for (qw(commit commitdiff)) {
1496                         $arg{$_}{hash} = $head;
1497                 }
1498                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1499                         for (qw(shortlog log)) {
1500                                 $arg{$_}{hash} = $head;
1501                         }
1502                 }
1503         }
1504         $arg{tree}{hash} = $treehead if defined $treehead;
1505         $arg{tree}{hash_base} = $treebase if defined $treebase;
1506
1507         print "<div class=\"page_nav\">\n" .
1508                 (join " | ",
1509                  map { $_ eq $current ?
1510                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1511                  } @navs);
1512         print "<br/>\n$extra<br/>\n" .
1513               "</div>\n";
1514 }
1515
1516 sub format_paging_nav {
1517         my ($action, $hash, $head, $page, $nrevs) = @_;
1518         my $paging_nav;
1519
1520
1521         if ($hash ne $head || $page) {
1522                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1523         } else {
1524                 $paging_nav .= "HEAD";
1525         }
1526
1527         if ($page > 0) {
1528                 $paging_nav .= " &sdot; " .
1529                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1530                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1531         } else {
1532                 $paging_nav .= " &sdot; prev";
1533         }
1534
1535         if ($nrevs >= (100 * ($page+1)-1)) {
1536                 $paging_nav .= " &sdot; " .
1537                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1538                                  -accesskey => "n", -title => "Alt-n"}, "next");
1539         } else {
1540                 $paging_nav .= " &sdot; next";
1541         }
1542
1543         return $paging_nav;
1544 }
1545
1546 ## ......................................................................
1547 ## functions printing or outputting HTML: div
1548
1549 sub git_print_header_div {
1550         my ($action, $title, $hash, $hash_base) = @_;
1551         my %args = ();
1552
1553         $args{action} = $action;
1554         $args{hash} = $hash if $hash;
1555         $args{hash_base} = $hash_base if $hash_base;
1556
1557         print "<div class=\"header\">\n" .
1558               $cgi->a({-href => href(%args), -class => "title"},
1559               $title ? $title : $action) .
1560               "\n</div>\n";
1561 }
1562
1563 #sub git_print_authorship (\%) {
1564 sub git_print_authorship {
1565         my $co = shift;
1566
1567         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1568         print "<div class=\"author_date\">" .
1569               esc_html($co->{'author_name'}) .
1570               " [$ad{'rfc2822'}";
1571         if ($ad{'hour_local'} < 6) {
1572                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1573                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1574         } else {
1575                 printf(" (%02d:%02d %s)",
1576                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1577         }
1578         print "]</div>\n";
1579 }
1580
1581 sub git_print_page_path {
1582         my $name = shift;
1583         my $type = shift;
1584         my $hb = shift;
1585
1586         if (!defined $name) {
1587                 print "<div class=\"page_path\">/</div>\n";
1588         } else {
1589                 my @dirname = split '/', $name;
1590                 my $basename = pop @dirname;
1591                 my $fullname = '';
1592
1593                 print "<div class=\"page_path\">";
1594                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1595                               -title => 'tree root'}, "[$project]");
1596                 print " / ";
1597                 foreach my $dir (@dirname) {
1598                         $fullname .= ($fullname ? '/' : '') . $dir;
1599                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1600                                                      hash_base=>$hb),
1601                                       -title => $fullname}, esc_html($dir));
1602                         print " / ";
1603                 }
1604                 if (defined $type && $type eq 'blob') {
1605                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1606                                                      hash_base=>$hb),
1607                                       -title => $name}, esc_html($basename));
1608                 } elsif (defined $type && $type eq 'tree') {
1609                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1610                                                      hash_base=>$hb),
1611                                       -title => $name}, esc_html($basename));
1612                 } else {
1613                         print esc_html($basename);
1614                 }
1615                 print "<br/></div>\n";
1616         }
1617 }
1618
1619 # sub git_print_log (\@;%) {
1620 sub git_print_log ($;%) {
1621         my $log = shift;
1622         my %opts = @_;
1623
1624         if ($opts{'-remove_title'}) {
1625                 # remove title, i.e. first line of log
1626                 shift @$log;
1627         }
1628         # remove leading empty lines
1629         while (defined $log->[0] && $log->[0] eq "") {
1630                 shift @$log;
1631         }
1632
1633         # print log
1634         my $signoff = 0;
1635         my $empty = 0;
1636         foreach my $line (@$log) {
1637                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1638                         $signoff = 1;
1639                         $empty = 0;
1640                         if (! $opts{'-remove_signoff'}) {
1641                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1642                                 next;
1643                         } else {
1644                                 # remove signoff lines
1645                                 next;
1646                         }
1647                 } else {
1648                         $signoff = 0;
1649                 }
1650
1651                 # print only one empty line
1652                 # do not print empty line after signoff
1653                 if ($line eq "") {
1654                         next if ($empty || $signoff);
1655                         $empty = 1;
1656                 } else {
1657                         $empty = 0;
1658                 }
1659
1660                 print format_log_line_html($line) . "<br/>\n";
1661         }
1662
1663         if ($opts{'-final_empty_line'}) {
1664                 # end with single empty line
1665                 print "<br/>\n" unless $empty;
1666         }
1667 }
1668
1669 sub git_print_simplified_log {
1670         my $log = shift;
1671         my $remove_title = shift;
1672
1673         git_print_log($log,
1674                 -final_empty_line=> 1,
1675                 -remove_title => $remove_title);
1676 }
1677
1678 # print tree entry (row of git_tree), but without encompassing <tr> element
1679 sub git_print_tree_entry {
1680         my ($t, $basedir, $hash_base, $have_blame) = @_;
1681
1682         my %base_key = ();
1683         $base_key{hash_base} = $hash_base if defined $hash_base;
1684
1685         # The format of a table row is: mode list link.  Where mode is
1686         # the mode of the entry, list is the name of the entry, an href,
1687         # and link is the action links of the entry.
1688
1689         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1690         if ($t->{'type'} eq "blob") {
1691                 print "<td class=\"list\">" .
1692                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1693                                                file_name=>"$basedir$t->{'name'}", %base_key),
1694                                  -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1695                 print "<td class=\"link\">";
1696                 if ($have_blame) {
1697                         print $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1698                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
1699                                       "blame");
1700                 }
1701                 if (defined $hash_base) {
1702                         if ($have_blame) {
1703                                 print " | ";
1704                         }
1705                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1706                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1707                                       "history");
1708                 }
1709                 print " | " .
1710                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1711                                                file_name=>"$basedir$t->{'name'}")},
1712                                 "raw");
1713                 print "</td>\n";
1714
1715         } elsif ($t->{'type'} eq "tree") {
1716                 print "<td class=\"list\">";
1717                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1718                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1719                               esc_html($t->{'name'}));
1720                 print "</td>\n";
1721                 print "<td class=\"link\">";
1722                 if (defined $hash_base) {
1723                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1724                                                      file_name=>"$basedir$t->{'name'}")},
1725                                       "history");
1726                 }
1727                 print "</td>\n";
1728         }
1729 }
1730
1731 ## ......................................................................
1732 ## functions printing large fragments of HTML
1733
1734 sub git_difftree_body {
1735         my ($difftree, $hash, $parent) = @_;
1736
1737         print "<div class=\"list_head\">\n";
1738         if ($#{$difftree} > 10) {
1739                 print(($#{$difftree} + 1) . " files changed:\n");
1740         }
1741         print "</div>\n";
1742
1743         print "<table class=\"diff_tree\">\n";
1744         my $alternate = 1;
1745         my $patchno = 0;
1746         foreach my $line (@{$difftree}) {
1747                 my %diff = parse_difftree_raw_line($line);
1748
1749                 if ($alternate) {
1750                         print "<tr class=\"dark\">\n";
1751                 } else {
1752                         print "<tr class=\"light\">\n";
1753                 }
1754                 $alternate ^= 1;
1755
1756                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1757                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1758                 if ($diff{'to_mode'} ne ('0' x 6)) {
1759                         $to_mode_oct = oct $diff{'to_mode'};
1760                         if (S_ISREG($to_mode_oct)) { # only for regular file
1761                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1762                         }
1763                         $to_file_type = file_type($diff{'to_mode'});
1764                 }
1765                 if ($diff{'from_mode'} ne ('0' x 6)) {
1766                         $from_mode_oct = oct $diff{'from_mode'};
1767                         if (S_ISREG($to_mode_oct)) { # only for regular file
1768                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1769                         }
1770                         $from_file_type = file_type($diff{'from_mode'});
1771                 }
1772
1773                 if ($diff{'status'} eq "A") { # created
1774                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1775                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1776                         $mode_chng   .= "]</span>";
1777                         print "<td>";
1778                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1779                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1780                                        -class => "list"}, esc_html($diff{'file'}));
1781                         print "</td>\n";
1782                         print "<td>$mode_chng</td>\n";
1783                         print "<td class=\"link\">";
1784                         if ($action eq 'commitdiff') {
1785                                 # link to patch
1786                                 $patchno++;
1787                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1788                         }
1789                         print "</td>\n";
1790
1791                 } elsif ($diff{'status'} eq "D") { # deleted
1792                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1793                         print "<td>";
1794                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1795                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1796                                        -class => "list"}, esc_html($diff{'file'}));
1797                         print "</td>\n";
1798                         print "<td>$mode_chng</td>\n";
1799                         print "<td class=\"link\">";
1800                         if ($action eq 'commitdiff') {
1801                                 # link to patch
1802                                 $patchno++;
1803                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1804                                 print " | ";
1805                         }
1806                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1807                                                      file_name=>$diff{'file'})},
1808                                       "blame") . " | ";
1809                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1810                                                      file_name=>$diff{'file'})},
1811                                       "history");
1812                         print "</td>\n";
1813
1814                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1815                         my $mode_chnge = "";
1816                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1817                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1818                                 if ($from_file_type != $to_file_type) {
1819                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1820                                 }
1821                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1822                                         if ($from_mode_str && $to_mode_str) {
1823                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1824                                         } elsif ($to_mode_str) {
1825                                                 $mode_chnge .= " mode: $to_mode_str";
1826                                         }
1827                                 }
1828                                 $mode_chnge .= "]</span>\n";
1829                         }
1830                         print "<td>";
1831                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1832                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1833                                        -class => "list"}, esc_html($diff{'file'}));
1834                         print "</td>\n";
1835                         print "<td>$mode_chnge</td>\n";
1836                         print "<td class=\"link\">";
1837                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1838                                 if ($action eq 'commitdiff') {
1839                                         # link to patch
1840                                         $patchno++;
1841                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1842                                 } else {
1843                                         print $cgi->a({-href => href(action=>"blobdiff",
1844                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1845                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1846                                                                      file_name=>$diff{'file'})},
1847                                                       "diff");
1848                                 }
1849                                 print " | ";
1850                         }
1851                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
1852                                                      file_name=>$diff{'file'})},
1853                                       "blame") . " | ";
1854                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
1855                                                      file_name=>$diff{'file'})},
1856                                       "history");
1857                         print "</td>\n";
1858
1859                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1860                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1861                         my $nstatus = $status_name{$diff{'status'}};
1862                         my $mode_chng = "";
1863                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1864                                 # mode also for directories, so we cannot use $to_mode_str
1865                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1866                         }
1867                         print "<td>" .
1868                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1869                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1870                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1871                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1872                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1873                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1874                                       -class => "list"}, esc_html($diff{'from_file'})) .
1875                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1876                               "<td class=\"link\">";
1877                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1878                                 if ($action eq 'commitdiff') {
1879                                         # link to patch
1880                                         $patchno++;
1881                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1882                                 } else {
1883                                         print $cgi->a({-href => href(action=>"blobdiff",
1884                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1885                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1886                                                                      file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1887                                                       "diff");
1888                                 }
1889                                 print " | ";
1890                         }
1891                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1892                                                      file_name=>$diff{'from_file'})},
1893                                       "blame") . " | ";
1894                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1895                                                      file_name=>$diff{'from_file'})},
1896                                       "history");
1897                         print "</td>\n";
1898
1899                 } # we should not encounter Unmerged (U) or Unknown (X) status
1900                 print "</tr>\n";
1901         }
1902         print "</table>\n";
1903 }
1904
1905 sub git_patchset_body {
1906         my ($fd, $difftree, $hash, $hash_parent) = @_;
1907
1908         my $patch_idx = 0;
1909         my $in_header = 0;
1910         my $patch_found = 0;
1911         my $diffinfo;
1912
1913         print "<div class=\"patchset\">\n";
1914
1915         LINE:
1916         while (my $patch_line = <$fd>) {
1917                 chomp $patch_line;
1918
1919                 if ($patch_line =~ m/^diff /) { # "git diff" header
1920                         # beginning of patch (in patchset)
1921                         if ($patch_found) {
1922                                 # close previous patch
1923                                 print "</div>\n"; # class="patch"
1924                         } else {
1925                                 # first patch in patchset
1926                                 $patch_found = 1;
1927                         }
1928                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1929
1930                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1931                                 $diffinfo = $difftree->[$patch_idx];
1932                         } else {
1933                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1934                         }
1935                         $patch_idx++;
1936
1937                         # for now, no extended header, hence we skip empty patches
1938                         # companion to  next LINE if $in_header;
1939                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1940                                 $in_header = 1;
1941                                 next LINE;
1942                         }
1943
1944                         if ($diffinfo->{'status'} eq "A") { # added
1945                                 print "<div class=\"diff_info\">" . 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                                               $diffinfo->{'to_id'}) . "(new)" .
1949                                       "</div>\n"; # class="diff_info"
1950
1951                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1952                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1953                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1954                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1955                                               $diffinfo->{'from_id'}) . "(deleted)" .
1956                                       "</div>\n"; # class="diff_info"
1957
1958                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1959                                  $diffinfo->{'status'} eq "C" || # copied
1960                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1961                                 print "<div class=\"diff_info\">" .
1962                                       file_type($diffinfo->{'from_mode'}) . ":" .
1963                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1964                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1965                                               $diffinfo->{'from_id'}) .
1966                                       " -> " .
1967                                       file_type($diffinfo->{'to_mode'}) . ":" .
1968                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1969                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1970                                               $diffinfo->{'to_id'});
1971                                 print "</div>\n"; # class="diff_info"
1972
1973                         } else { # modified, mode changed, ...
1974                                 print "<div class=\"diff_info\">" .
1975                                       file_type($diffinfo->{'from_mode'}) . ":" .
1976                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1977                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1978                                               $diffinfo->{'from_id'}) .
1979                                       " -> " .
1980                                       file_type($diffinfo->{'to_mode'}) . ":" .
1981                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1982                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1983                                               $diffinfo->{'to_id'});
1984                                 print "</div>\n"; # class="diff_info"
1985                         }
1986
1987                         #print "<div class=\"diff extended_header\">\n";
1988                         $in_header = 1;
1989                         next LINE;
1990                 } # start of patch in patchset
1991
1992
1993                 if ($in_header && $patch_line =~ m/^---/) {
1994                         #print "</div>\n"; # class="diff extended_header"
1995                         $in_header = 0;
1996
1997                         my $file = $diffinfo->{'from_file'};
1998                         $file  ||= $diffinfo->{'file'};
1999                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2000                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2001                                         -class => "list"}, esc_html($file));
2002                         $patch_line =~ s|a/.*$|a/$file|g;
2003                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2004
2005                         $patch_line = <$fd>;
2006                         chomp $patch_line;
2007
2008                         #$patch_line =~ m/^+++/;
2009                         $file    = $diffinfo->{'to_file'};
2010                         $file  ||= $diffinfo->{'file'};
2011                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2012                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2013                                         -class => "list"}, esc_html($file));
2014                         $patch_line =~ s|b/.*|b/$file|g;
2015                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2016
2017                         next LINE;
2018                 }
2019                 next LINE if $in_header;
2020
2021                 print format_diff_line($patch_line);
2022         }
2023         print "</div>\n" if $patch_found; # class="patch"
2024
2025         print "</div>\n"; # class="patchset"
2026 }
2027
2028 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2029
2030 sub git_shortlog_body {
2031         # uses global variable $project
2032         my ($revlist, $from, $to, $refs, $extra) = @_;
2033
2034         $from = 0 unless defined $from;
2035         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2036
2037         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2038         my $alternate = 1;
2039         for (my $i = $from; $i <= $to; $i++) {
2040                 my $commit = $revlist->[$i];
2041                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2042                 my $ref = format_ref_marker($refs, $commit);
2043                 my %co = parse_commit($commit);
2044                 if ($alternate) {
2045                         print "<tr class=\"dark\">\n";
2046                 } else {
2047                         print "<tr class=\"light\">\n";
2048                 }
2049                 $alternate ^= 1;
2050                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2051                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2052                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2053                       "<td>";
2054                 print format_subject_html($co{'title'}, $co{'title_short'},
2055                                           href(action=>"commit", hash=>$commit), $ref);
2056                 print "</td>\n" .
2057                       "<td class=\"link\">" .
2058                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2059                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") . " | " .
2060                       $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2061                 print "</td>\n" .
2062                       "</tr>\n";
2063         }
2064         if (defined $extra) {
2065                 print "<tr>\n" .
2066                       "<td colspan=\"4\">$extra</td>\n" .
2067                       "</tr>\n";
2068         }
2069         print "</table>\n";
2070 }
2071
2072 sub git_history_body {
2073         # Warning: assumes constant type (blob or tree) during history
2074         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2075
2076         $from = 0 unless defined $from;
2077         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2078
2079         print "<table class=\"history\" cellspacing=\"0\">\n";
2080         my $alternate = 1;
2081         for (my $i = $from; $i <= $to; $i++) {
2082                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2083                         next;
2084                 }
2085
2086                 my $commit = $1;
2087                 my %co = parse_commit($commit);
2088                 if (!%co) {
2089                         next;
2090                 }
2091
2092                 my $ref = format_ref_marker($refs, $commit);
2093
2094                 if ($alternate) {
2095                         print "<tr class=\"dark\">\n";
2096                 } else {
2097                         print "<tr class=\"light\">\n";
2098                 }
2099                 $alternate ^= 1;
2100                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2101                       # shortlog uses      chop_str($co{'author_name'}, 10)
2102                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2103                       "<td>";
2104                 # originally git_history used chop_str($co{'title'}, 50)
2105                 print format_subject_html($co{'title'}, $co{'title_short'},
2106                                           href(action=>"commit", hash=>$commit), $ref);
2107                 print "</td>\n" .
2108                       "<td class=\"link\">" .
2109                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2110                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2111
2112                 if ($ftype eq 'blob') {
2113                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2114                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2115                         if (defined $blob_current && defined $blob_parent &&
2116                                         $blob_current ne $blob_parent) {
2117                                 print " | " .
2118                                         $cgi->a({-href => href(action=>"blobdiff",
2119                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2120                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2121                                                                file_name=>$file_name)},
2122                                                 "diff to current");
2123                         }
2124                 }
2125                 print "</td>\n" .
2126                       "</tr>\n";
2127         }
2128         if (defined $extra) {
2129                 print "<tr>\n" .
2130                       "<td colspan=\"4\">$extra</td>\n" .
2131                       "</tr>\n";
2132         }
2133         print "</table>\n";
2134 }
2135
2136 sub git_tags_body {
2137         # uses global variable $project
2138         my ($taglist, $from, $to, $extra) = @_;
2139         $from = 0 unless defined $from;
2140         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2141
2142         print "<table class=\"tags\" cellspacing=\"0\">\n";
2143         my $alternate = 1;
2144         for (my $i = $from; $i <= $to; $i++) {
2145                 my $entry = $taglist->[$i];
2146                 my %tag = %$entry;
2147                 my $comment_lines = $tag{'comment'};
2148                 my $comment = shift @$comment_lines;
2149                 my $comment_short;
2150                 if (defined $comment) {
2151                         $comment_short = chop_str($comment, 30, 5);
2152                 }
2153                 if ($alternate) {
2154                         print "<tr class=\"dark\">\n";
2155                 } else {
2156                         print "<tr class=\"light\">\n";
2157                 }
2158                 $alternate ^= 1;
2159                 print "<td><i>$tag{'age'}</i></td>\n" .
2160                       "<td>" .
2161                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2162                                -class => "list name"}, esc_html($tag{'name'})) .
2163                       "</td>\n" .
2164                       "<td>";
2165                 if (defined $comment) {
2166                         print format_subject_html($comment, $comment_short,
2167                                                   href(action=>"tag", hash=>$tag{'id'}));
2168                 }
2169                 print "</td>\n" .
2170                       "<td class=\"selflink\">";
2171                 if ($tag{'type'} eq "tag") {
2172                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2173                 } else {
2174                         print "&nbsp;";
2175                 }
2176                 print "</td>\n" .
2177                       "<td class=\"link\">" . " | " .
2178                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2179                 if ($tag{'reftype'} eq "commit") {
2180                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2181                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2182                 } elsif ($tag{'reftype'} eq "blob") {
2183                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2184                 }
2185                 print "</td>\n" .
2186                       "</tr>";
2187         }
2188         if (defined $extra) {
2189                 print "<tr>\n" .
2190                       "<td colspan=\"5\">$extra</td>\n" .
2191                       "</tr>\n";
2192         }
2193         print "</table>\n";
2194 }
2195
2196 sub git_heads_body {
2197         # uses global variable $project
2198         my ($headlist, $head, $from, $to, $extra) = @_;
2199         $from = 0 unless defined $from;
2200         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2201
2202         print "<table class=\"heads\" cellspacing=\"0\">\n";
2203         my $alternate = 1;
2204         for (my $i = $from; $i <= $to; $i++) {
2205                 my $entry = $headlist->[$i];
2206                 my %tag = %$entry;
2207                 my $curr = $tag{'id'} eq $head;
2208                 if ($alternate) {
2209                         print "<tr class=\"dark\">\n";
2210                 } else {
2211                         print "<tr class=\"light\">\n";
2212                 }
2213                 $alternate ^= 1;
2214                 print "<td><i>$tag{'age'}</i></td>\n" .
2215                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2216                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2217                                -class => "list name"},esc_html($tag{'name'})) .
2218                       "</td>\n" .
2219                       "<td class=\"link\">" .
2220                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2221                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") . " | " .
2222                       $cgi->a({-href => href(action=>"tree", hash=>$tag{'name'}, hash_base=>$tag{'name'})}, "tree") .
2223                       "</td>\n" .
2224                       "</tr>";
2225         }
2226         if (defined $extra) {
2227                 print "<tr>\n" .
2228                       "<td colspan=\"3\">$extra</td>\n" .
2229                       "</tr>\n";
2230         }
2231         print "</table>\n";
2232 }
2233
2234 ## ======================================================================
2235 ## ======================================================================
2236 ## actions
2237
2238 sub git_project_list {
2239         my $order = $cgi->param('o');
2240         if (defined $order && $order !~ m/project|descr|owner|age/) {
2241                 die_error(undef, "Unknown order parameter");
2242         }
2243
2244         my @list = git_get_projects_list();
2245         my @projects;
2246         if (!@list) {
2247                 die_error(undef, "No projects found");
2248         }
2249         foreach my $pr (@list) {
2250                 my $head = git_get_head_hash($pr->{'path'});
2251                 if (!defined $head) {
2252                         next;
2253                 }
2254                 $git_dir = "$projectroot/$pr->{'path'}";
2255                 my %co = parse_commit($head);
2256                 if (!%co) {
2257                         next;
2258                 }
2259                 $pr->{'commit'} = \%co;
2260                 if (!defined $pr->{'descr'}) {
2261                         my $descr = git_get_project_description($pr->{'path'}) || "";
2262                         $pr->{'descr'} = chop_str($descr, 25, 5);
2263                 }
2264                 if (!defined $pr->{'owner'}) {
2265                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2266                 }
2267                 push @projects, $pr;
2268         }
2269
2270         git_header_html();
2271         if (-f $home_text) {
2272                 print "<div class=\"index_include\">\n";
2273                 open (my $fd, $home_text);
2274                 print <$fd>;
2275                 close $fd;
2276                 print "</div>\n";
2277         }
2278         print "<table class=\"project_list\">\n" .
2279               "<tr>\n";
2280         $order ||= "project";
2281         if ($order eq "project") {
2282                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2283                 print "<th>Project</th>\n";
2284         } else {
2285                 print "<th>" .
2286                       $cgi->a({-href => href(project=>undef, order=>'project'),
2287                                -class => "header"}, "Project") .
2288                       "</th>\n";
2289         }
2290         if ($order eq "descr") {
2291                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2292                 print "<th>Description</th>\n";
2293         } else {
2294                 print "<th>" .
2295                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2296                                -class => "header"}, "Description") .
2297                       "</th>\n";
2298         }
2299         if ($order eq "owner") {
2300                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2301                 print "<th>Owner</th>\n";
2302         } else {
2303                 print "<th>" .
2304                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2305                                -class => "header"}, "Owner") .
2306                       "</th>\n";
2307         }
2308         if ($order eq "age") {
2309                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2310                 print "<th>Last Change</th>\n";
2311         } else {
2312                 print "<th>" .
2313                       $cgi->a({-href => href(project=>undef, order=>'age'),
2314                                -class => "header"}, "Last Change") .
2315                       "</th>\n";
2316         }
2317         print "<th></th>\n" .
2318               "</tr>\n";
2319         my $alternate = 1;
2320         foreach my $pr (@projects) {
2321                 if ($alternate) {
2322                         print "<tr class=\"dark\">\n";
2323                 } else {
2324                         print "<tr class=\"light\">\n";
2325                 }
2326                 $alternate ^= 1;
2327                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2328                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2329                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2330                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2331                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2332                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2333                       "<td class=\"link\">" .
2334                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2335                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2336                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2337                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2338                       "</td>\n" .
2339                       "</tr>\n";
2340         }
2341         print "</table>\n";
2342         git_footer_html();
2343 }
2344
2345 sub git_project_index {
2346         my @projects = git_get_projects_list();
2347
2348         print $cgi->header(
2349                 -type => 'text/plain',
2350                 -charset => 'utf-8',
2351                 -content_disposition => 'inline; filename="index.aux"');
2352
2353         foreach my $pr (@projects) {
2354                 if (!exists $pr->{'owner'}) {
2355                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2356                 }
2357
2358                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2359                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2360                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2361                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2362                 $path  =~ s/ /\+/g;
2363                 $owner =~ s/ /\+/g;
2364
2365                 print "$path $owner\n";
2366         }
2367 }
2368
2369 sub git_summary {
2370         my $descr = git_get_project_description($project) || "none";
2371         my $head = git_get_head_hash($project);
2372         my %co = parse_commit($head);
2373         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2374
2375         my $owner = git_get_project_owner($project);
2376
2377         my ($reflist, $refs) = git_get_refs_list();
2378
2379         my @taglist;
2380         my @headlist;
2381         foreach my $ref (@$reflist) {
2382                 if ($ref->{'name'} =~ s!^heads/!!) {
2383                         push @headlist, $ref;
2384                 } else {
2385                         $ref->{'name'} =~ s!^tags/!!;
2386                         push @taglist, $ref;
2387                 }
2388         }
2389
2390         git_header_html();
2391         git_print_page_nav('summary','', $head);
2392
2393         print "<div class=\"title\">&nbsp;</div>\n";
2394         print "<table cellspacing=\"0\">\n" .
2395               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2396               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2397               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2398         # use per project git URL list in $projectroot/$project/cloneurl
2399         # or make project git URL from git base URL and project name
2400         my $url_tag = "URL";
2401         my @url_list = git_get_project_url_list($project);
2402         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2403         foreach my $git_url (@url_list) {
2404                 next unless $git_url;
2405                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2406                 $url_tag = "";
2407         }
2408         print "</table>\n";
2409
2410         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2411                 git_get_head_hash($project)
2412                 or die_error(undef, "Open git-rev-list failed");
2413         my @revlist = map { chomp; $_ } <$fd>;
2414         close $fd;
2415         git_print_header_div('shortlog');
2416         git_shortlog_body(\@revlist, 0, 15, $refs,
2417                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2418
2419         if (@taglist) {
2420                 git_print_header_div('tags');
2421                 git_tags_body(\@taglist, 0, 15,
2422                               $cgi->a({-href => href(action=>"tags")}, "..."));
2423         }
2424
2425         if (@headlist) {
2426                 git_print_header_div('heads');
2427                 git_heads_body(\@headlist, $head, 0, 15,
2428                                $cgi->a({-href => href(action=>"heads")}, "..."));
2429         }
2430
2431         git_footer_html();
2432 }
2433
2434 sub git_tag {
2435         my $head = git_get_head_hash($project);
2436         git_header_html();
2437         git_print_page_nav('','', $head,undef,$head);
2438         my %tag = parse_tag($hash);
2439         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2440         print "<div class=\"title_text\">\n" .
2441               "<table cellspacing=\"0\">\n" .
2442               "<tr>\n" .
2443               "<td>object</td>\n" .
2444               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2445                                $tag{'object'}) . "</td>\n" .
2446               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2447                                               $tag{'type'}) . "</td>\n" .
2448               "</tr>\n";
2449         if (defined($tag{'author'})) {
2450                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2451                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2452                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2453                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2454                         "</td></tr>\n";
2455         }
2456         print "</table>\n\n" .
2457               "</div>\n";
2458         print "<div class=\"page_body\">";
2459         my $comment = $tag{'comment'};
2460         foreach my $line (@$comment) {
2461                 print esc_html($line) . "<br/>\n";
2462         }
2463         print "</div>\n";
2464         git_footer_html();
2465 }
2466
2467 sub git_blame2 {
2468         my $fd;
2469         my $ftype;
2470
2471         my ($have_blame) = gitweb_check_feature('blame');
2472         if (!$have_blame) {
2473                 die_error('403 Permission denied', "Permission denied");
2474         }
2475         die_error('404 Not Found', "File name not defined") if (!$file_name);
2476         $hash_base ||= git_get_head_hash($project);
2477         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2478         my %co = parse_commit($hash_base)
2479                 or die_error(undef, "Reading commit failed");
2480         if (!defined $hash) {
2481                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2482                         or die_error(undef, "Error looking up file");
2483         }
2484         $ftype = git_get_type($hash);
2485         if ($ftype !~ "blob") {
2486                 die_error("400 Bad Request", "Object is not a blob");
2487         }
2488         open ($fd, "-|", git_cmd(), "blame", '-l', '--', $file_name, $hash_base)
2489                 or die_error(undef, "Open git-blame failed");
2490         git_header_html();
2491         my $formats_nav =
2492                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2493                         "blob") .
2494                 " | " .
2495                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2496                         "history") .
2497                 " | " .
2498                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2499                         "HEAD");
2500         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2501         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2502         git_print_page_path($file_name, $ftype, $hash_base);
2503         my @rev_color = (qw(light2 dark2));
2504         my $num_colors = scalar(@rev_color);
2505         my $current_color = 0;
2506         my $last_rev;
2507         print <<HTML;
2508 <div class="page_body">
2509 <table class="blame">
2510 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2511 HTML
2512         while (<$fd>) {
2513                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2514                 my $full_rev = $1;
2515                 my $rev = substr($full_rev, 0, 8);
2516                 my $lineno = $2;
2517                 my $data = $3;
2518                 my $print_c8 = 0;
2519
2520                 if (!defined $last_rev) {
2521                         $last_rev = $full_rev;
2522                         $print_c8 = 1;
2523                 } elsif ($last_rev ne $full_rev) {
2524                         $last_rev = $full_rev;
2525                         $current_color = ++$current_color % $num_colors;
2526                         $print_c8 = 1;
2527                 }
2528                 print "<tr class=\"$rev_color[$current_color]\">\n";
2529                 print "<td class=\"sha1\">";
2530                 if ($print_c8 == 1) {
2531                         print $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2532                                       esc_html($rev));
2533                 }
2534                 print "</td>\n";
2535                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2536                       esc_html($lineno) . "</a></td>\n";
2537                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2538                 print "</tr>\n";
2539         }
2540         print "</table>\n";
2541         print "</div>";
2542         close $fd
2543                 or print "Reading blob failed\n";
2544         git_footer_html();
2545 }
2546
2547 sub git_blame {
2548         my $fd;
2549
2550         my ($have_blame) = gitweb_check_feature('blame');
2551         if (!$have_blame) {
2552                 die_error('403 Permission denied', "Permission denied");
2553         }
2554         die_error('404 Not Found', "File name not defined") if (!$file_name);
2555         $hash_base ||= git_get_head_hash($project);
2556         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2557         my %co = parse_commit($hash_base)
2558                 or die_error(undef, "Reading commit failed");
2559         if (!defined $hash) {
2560                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2561                         or die_error(undef, "Error lookup file");
2562         }
2563         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2564                 or die_error(undef, "Open git-annotate failed");
2565         git_header_html();
2566         my $formats_nav =
2567                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2568                         "blob") .
2569                 " | " .
2570                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2571                         "history") .
2572                 " | " .
2573                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2574                         "HEAD");
2575         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2576         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2577         git_print_page_path($file_name, 'blob', $hash_base);
2578         print "<div class=\"page_body\">\n";
2579         print <<HTML;
2580 <table class="blame">
2581   <tr>
2582     <th>Commit</th>
2583     <th>Age</th>
2584     <th>Author</th>
2585     <th>Line</th>
2586     <th>Data</th>
2587   </tr>
2588 HTML
2589         my @line_class = (qw(light dark));
2590         my $line_class_len = scalar (@line_class);
2591         my $line_class_num = $#line_class;
2592         while (my $line = <$fd>) {
2593                 my $long_rev;
2594                 my $short_rev;
2595                 my $author;
2596                 my $time;
2597                 my $lineno;
2598                 my $data;
2599                 my $age;
2600                 my $age_str;
2601                 my $age_class;
2602
2603                 chomp $line;
2604                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2605
2606                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2607                         $long_rev = $1;
2608                         $author   = $2;
2609                         $time     = $3;
2610                         $lineno   = $4;
2611                         $data     = $5;
2612                 } else {
2613                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2614                         next;
2615                 }
2616                 $short_rev  = substr ($long_rev, 0, 8);
2617                 $age        = time () - $time;
2618                 $age_str    = age_string ($age);
2619                 $age_str    =~ s/ /&nbsp;/g;
2620                 $age_class  = age_class($age);
2621                 $author     = esc_html ($author);
2622                 $author     =~ s/ /&nbsp;/g;
2623
2624                 $data = untabify($data);
2625                 $data = esc_html ($data);
2626
2627                 print <<HTML;
2628   <tr class="$line_class[$line_class_num]">
2629     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2630     <td class="$age_class">$age_str</td>
2631     <td>$author</td>
2632     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2633     <td class="pre">$data</td>
2634   </tr>
2635 HTML
2636         } # while (my $line = <$fd>)
2637         print "</table>\n\n";
2638         close $fd
2639                 or print "Reading blob failed.\n";
2640         print "</div>";
2641         git_footer_html();
2642 }
2643
2644 sub git_tags {
2645         my $head = git_get_head_hash($project);
2646         git_header_html();
2647         git_print_page_nav('','', $head,undef,$head);
2648         git_print_header_div('summary', $project);
2649
2650         my ($taglist) = git_get_refs_list("tags");
2651         if (@$taglist) {
2652                 git_tags_body($taglist);
2653         }
2654         git_footer_html();
2655 }
2656
2657 sub git_heads {
2658         my $head = git_get_head_hash($project);
2659         git_header_html();
2660         git_print_page_nav('','', $head,undef,$head);
2661         git_print_header_div('summary', $project);
2662
2663         my ($headlist) = git_get_refs_list("heads");
2664         if (@$headlist) {
2665                 git_heads_body($headlist, $head);
2666         }
2667         git_footer_html();
2668 }
2669
2670 sub git_blob_plain {
2671         my $expires;
2672
2673         if (!defined $hash) {
2674                 if (defined $file_name) {
2675                         my $base = $hash_base || git_get_head_hash($project);
2676                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2677                                 or die_error(undef, "Error lookup file");
2678                 } else {
2679                         die_error(undef, "No file name defined");
2680                 }
2681         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2682                 # blobs defined by non-textual hash id's can be cached
2683                 $expires = "+1d";
2684         }
2685
2686         my $type = shift;
2687         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2688                 or die_error(undef, "Couldn't cat $file_name, $hash");
2689
2690         $type ||= blob_mimetype($fd, $file_name);
2691
2692         # save as filename, even when no $file_name is given
2693         my $save_as = "$hash";
2694         if (defined $file_name) {
2695                 $save_as = $file_name;
2696         } elsif ($type =~ m/^text\//) {
2697                 $save_as .= '.txt';
2698         }
2699
2700         print $cgi->header(
2701                 -type => "$type",
2702                 -expires=>$expires,
2703                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2704         undef $/;
2705         binmode STDOUT, ':raw';
2706         print <$fd>;
2707         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2708         $/ = "\n";
2709         close $fd;
2710 }
2711
2712 sub git_blob {
2713         my $expires;
2714
2715         if (!defined $hash) {
2716                 if (defined $file_name) {
2717                         my $base = $hash_base || git_get_head_hash($project);
2718                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2719                                 or die_error(undef, "Error lookup file");
2720                 } else {
2721                         die_error(undef, "No file name defined");
2722                 }
2723         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2724                 # blobs defined by non-textual hash id's can be cached
2725                 $expires = "+1d";
2726         }
2727
2728         my ($have_blame) = gitweb_check_feature('blame');
2729         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2730                 or die_error(undef, "Couldn't cat $file_name, $hash");
2731         my $mimetype = blob_mimetype($fd, $file_name);
2732         if ($mimetype !~ m/^text\//) {
2733                 close $fd;
2734                 return git_blob_plain($mimetype);
2735         }
2736         git_header_html(undef, $expires);
2737         my $formats_nav = '';
2738         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2739                 if (defined $file_name) {
2740                         if ($have_blame) {
2741                                 $formats_nav .=
2742                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2743                                                                hash=>$hash, file_name=>$file_name)},
2744                                                 "blame") .
2745                                         " | ";
2746                         }
2747                         $formats_nav .=
2748                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2749                                                        hash=>$hash, file_name=>$file_name)},
2750                                         "history") .
2751                                 " | " .
2752                                 $cgi->a({-href => href(action=>"blob_plain",
2753                                                        hash=>$hash, file_name=>$file_name)},
2754                                         "raw") .
2755                                 " | " .
2756                                 $cgi->a({-href => href(action=>"blob",
2757                                                        hash_base=>"HEAD", file_name=>$file_name)},
2758                                         "HEAD");
2759                 } else {
2760                         $formats_nav .=
2761                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2762                 }
2763                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2764                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2765         } else {
2766                 print "<div class=\"page_nav\">\n" .
2767                       "<br/><br/></div>\n" .
2768                       "<div class=\"title\">$hash</div>\n";
2769         }
2770         git_print_page_path($file_name, "blob", $hash_base);
2771         print "<div class=\"page_body\">\n";
2772         my $nr;
2773         while (my $line = <$fd>) {
2774                 chomp $line;
2775                 $nr++;
2776                 $line = untabify($line);
2777                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2778                        $nr, $nr, $nr, esc_html($line);
2779         }
2780         close $fd
2781                 or print "Reading blob failed.\n";
2782         print "</div>";
2783         git_footer_html();
2784 }
2785
2786 sub git_tree {
2787         my $have_snapshot = gitweb_have_snapshot();
2788
2789         if (!defined $hash_base) {
2790                 $hash_base = "HEAD";
2791         }
2792         if (!defined $hash) {
2793                 if (defined $file_name) {
2794                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
2795                 } else {
2796                         $hash = $hash_base;
2797                 }
2798         }
2799         $/ = "\0";
2800         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2801                 or die_error(undef, "Open git-ls-tree failed");
2802         my @entries = map { chomp; $_ } <$fd>;
2803         close $fd or die_error(undef, "Reading tree failed");
2804         $/ = "\n";
2805
2806         my $refs = git_get_references();
2807         my $ref = format_ref_marker($refs, $hash_base);
2808         git_header_html();
2809         my $base = "";
2810         my ($have_blame) = gitweb_check_feature('blame');
2811         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2812                 my @views_nav = ();
2813                 if (defined $file_name) {
2814                         push @views_nav,
2815                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2816                                                        hash=>$hash, file_name=>$file_name)},
2817                                         "history"),
2818                                 $cgi->a({-href => href(action=>"tree",
2819                                                        hash_base=>"HEAD", file_name=>$file_name)},
2820                                         "HEAD"),
2821                 }
2822                 if ($have_snapshot) {
2823                         # FIXME: Should be available when we have no hash base as well.
2824                         push @views_nav,
2825                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
2826                                         "snapshot");
2827                 }
2828                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
2829                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2830         } else {
2831                 undef $hash_base;
2832                 print "<div class=\"page_nav\">\n";
2833                 print "<br/><br/></div>\n";
2834                 print "<div class=\"title\">$hash</div>\n";
2835         }
2836         if (defined $file_name) {
2837                 $base = esc_html("$file_name/");
2838         }
2839         git_print_page_path($file_name, 'tree', $hash_base);
2840         print "<div class=\"page_body\">\n";
2841         print "<table cellspacing=\"0\">\n";
2842         my $alternate = 1;
2843         foreach my $line (@entries) {
2844                 my %t = parse_ls_tree_line($line, -z => 1);
2845
2846                 if ($alternate) {
2847                         print "<tr class=\"dark\">\n";
2848                 } else {
2849                         print "<tr class=\"light\">\n";
2850                 }
2851                 $alternate ^= 1;
2852
2853                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2854
2855                 print "</tr>\n";
2856         }
2857         print "</table>\n" .
2858               "</div>";
2859         git_footer_html();
2860 }
2861
2862 sub git_snapshot {
2863         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2864         my $have_snapshot = (defined $ctype && defined $suffix);
2865         if (!$have_snapshot) {
2866                 die_error('403 Permission denied', "Permission denied");
2867         }
2868
2869         if (!defined $hash) {
2870                 $hash = git_get_head_hash($project);
2871         }
2872
2873         my $filename = basename($project) . "-$hash.tar.$suffix";
2874
2875         print $cgi->header(
2876                 -type => 'application/x-tar',
2877                 -content_encoding => $ctype,
2878                 -content_disposition => 'inline; filename="' . "$filename" . '"',
2879                 -status => '200 OK');
2880
2881         my $git_command = git_cmd_str();
2882         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2883                 die_error(undef, "Execute git-tar-tree failed.");
2884         binmode STDOUT, ':raw';
2885         print <$fd>;
2886         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2887         close $fd;
2888
2889 }
2890
2891 sub git_log {
2892         my $head = git_get_head_hash($project);
2893         if (!defined $hash) {
2894                 $hash = $head;
2895         }
2896         if (!defined $page) {
2897                 $page = 0;
2898         }
2899         my $refs = git_get_references();
2900
2901         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2902         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2903                 or die_error(undef, "Open git-rev-list failed");
2904         my @revlist = map { chomp; $_ } <$fd>;
2905         close $fd;
2906
2907         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2908
2909         git_header_html();
2910         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2911
2912         if (!@revlist) {
2913                 my %co = parse_commit($hash);
2914
2915                 git_print_header_div('summary', $project);
2916                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2917         }
2918         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2919                 my $commit = $revlist[$i];
2920                 my $ref = format_ref_marker($refs, $commit);
2921                 my %co = parse_commit($commit);
2922                 next if !%co;
2923                 my %ad = parse_date($co{'author_epoch'});
2924                 git_print_header_div('commit',
2925                                "<span class=\"age\">$co{'age_string'}</span>" .
2926                                esc_html($co{'title'}) . $ref,
2927                                $commit);
2928                 print "<div class=\"title_text\">\n" .
2929                       "<div class=\"log_link\">\n" .
2930                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2931                       " | " .
2932                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2933                       " | " .
2934                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
2935                       "<br/>\n" .
2936                       "</div>\n" .
2937                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2938                       "</div>\n";
2939
2940                 print "<div class=\"log_body\">\n";
2941                 git_print_simplified_log($co{'comment'});
2942                 print "</div>\n";
2943         }
2944         git_footer_html();
2945 }
2946
2947 sub git_commit {
2948         my %co = parse_commit($hash);
2949         if (!%co) {
2950                 die_error(undef, "Unknown commit object");
2951         }
2952         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2953         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2954
2955         my $parent = $co{'parent'};
2956         if (!defined $parent) {
2957                 $parent = "--root";
2958         }
2959         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2960                 or die_error(undef, "Open git-diff-tree failed");
2961         my @difftree = map { chomp; $_ } <$fd>;
2962         close $fd or die_error(undef, "Reading git-diff-tree failed");
2963
2964         # non-textual hash id's can be cached
2965         my $expires;
2966         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2967                 $expires = "+1d";
2968         }
2969         my $refs = git_get_references();
2970         my $ref = format_ref_marker($refs, $co{'id'});
2971
2972         my $have_snapshot = gitweb_have_snapshot();
2973
2974         my @views_nav = ();
2975         if (defined $file_name && defined $co{'parent'}) {
2976                 push @views_nav,
2977                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2978                                 "blame");
2979         }
2980         if (defined $co{'parent'}) {
2981                 push @views_nav,
2982                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash)}, "shortlog"),
2983                         $cgi->a({-href => href(action=>"log", hash=>$hash)}, "log");
2984         }
2985         git_header_html(undef, $expires);
2986         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2987                            $hash, $co{'tree'}, $hash,
2988                            join (' | ', @views_nav));
2989
2990         if (defined $co{'parent'}) {
2991                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2992         } else {
2993                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2994         }
2995         print "<div class=\"title_text\">\n" .
2996               "<table cellspacing=\"0\">\n";
2997         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2998               "<tr>" .
2999               "<td></td><td> $ad{'rfc2822'}";
3000         if ($ad{'hour_local'} < 6) {
3001                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3002                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3003         } else {
3004                 printf(" (%02d:%02d %s)",
3005                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3006         }
3007         print "</td>" .
3008               "</tr>\n";
3009         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3010         print "<tr><td></td><td> $cd{'rfc2822'}" .
3011               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3012               "</td></tr>\n";
3013         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3014         print "<tr>" .
3015               "<td>tree</td>" .
3016               "<td class=\"sha1\">" .
3017               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3018                        class => "list"}, $co{'tree'}) .
3019               "</td>" .
3020               "<td class=\"link\">" .
3021               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3022                       "tree");
3023         if ($have_snapshot) {
3024                 print " | " .
3025                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3026         }
3027         print "</td>" .
3028               "</tr>\n";
3029         my $parents = $co{'parents'};
3030         foreach my $par (@$parents) {
3031                 print "<tr>" .
3032                       "<td>parent</td>" .
3033                       "<td class=\"sha1\">" .
3034                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3035                                class => "list"}, $par) .
3036                       "</td>" .
3037                       "<td class=\"link\">" .
3038                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3039                       " | " .
3040                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3041                       "</td>" .
3042                       "</tr>\n";
3043         }
3044         print "</table>".
3045               "</div>\n";
3046
3047         print "<div class=\"page_body\">\n";
3048         git_print_log($co{'comment'});
3049         print "</div>\n";
3050
3051         git_difftree_body(\@difftree, $hash, $parent);
3052
3053         git_footer_html();
3054 }
3055
3056 sub git_blobdiff {
3057         my $format = shift || 'html';
3058
3059         my $fd;
3060         my @difftree;
3061         my %diffinfo;
3062         my $expires;
3063
3064         # preparing $fd and %diffinfo for git_patchset_body
3065         # new style URI
3066         if (defined $hash_base && defined $hash_parent_base) {
3067                 if (defined $file_name) {
3068                         # read raw output
3069                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
3070                                 "--", $file_name
3071                                 or die_error(undef, "Open git-diff-tree failed");
3072                         @difftree = map { chomp; $_ } <$fd>;
3073                         close $fd
3074                                 or die_error(undef, "Reading git-diff-tree failed");
3075                         @difftree
3076                                 or die_error('404 Not Found', "Blob diff not found");
3077
3078                 } elsif (defined $hash &&
3079                          $hash =~ /[0-9a-fA-F]{40}/) {
3080                         # try to find filename from $hash
3081
3082                         # read filtered raw output
3083                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
3084                                 or die_error(undef, "Open git-diff-tree failed");
3085                         @difftree =
3086                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3087                                 # $hash == to_id
3088                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3089                                 map { chomp; $_ } <$fd>;
3090                         close $fd
3091                                 or die_error(undef, "Reading git-diff-tree failed");
3092                         @difftree
3093                                 or die_error('404 Not Found', "Blob diff not found");
3094
3095                 } else {
3096                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3097                 }
3098
3099                 if (@difftree > 1) {
3100                         die_error('404 Not Found', "Ambiguous blob diff specification");
3101                 }
3102
3103                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3104                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3105                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3106
3107                 $hash_parent ||= $diffinfo{'from_id'};
3108                 $hash        ||= $diffinfo{'to_id'};
3109
3110                 # non-textual hash id's can be cached
3111                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3112                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3113                         $expires = '+1d';
3114                 }
3115
3116                 # open patch output
3117                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3118                         '-p', $hash_parent_base, $hash_base,
3119                         "--", $file_name
3120                         or die_error(undef, "Open git-diff-tree failed");
3121         }
3122
3123         # old/legacy style URI
3124         if (!%diffinfo && # if new style URI failed
3125             defined $hash && defined $hash_parent) {
3126                 # fake git-diff-tree raw output
3127                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3128                 $diffinfo{'from_id'} = $hash_parent;
3129                 $diffinfo{'to_id'}   = $hash;
3130                 if (defined $file_name) {
3131                         if (defined $file_parent) {
3132                                 $diffinfo{'status'} = '2';
3133                                 $diffinfo{'from_file'} = $file_parent;
3134                                 $diffinfo{'to_file'}   = $file_name;
3135                         } else { # assume not renamed
3136                                 $diffinfo{'status'} = '1';
3137                                 $diffinfo{'from_file'} = $file_name;
3138                                 $diffinfo{'to_file'}   = $file_name;
3139                         }
3140                 } else { # no filename given
3141                         $diffinfo{'status'} = '2';
3142                         $diffinfo{'from_file'} = $hash_parent;
3143                         $diffinfo{'to_file'}   = $hash;
3144                 }
3145
3146                 # non-textual hash id's can be cached
3147                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3148                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3149                         $expires = '+1d';
3150                 }
3151
3152                 # open patch output
3153                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3154                         or die_error(undef, "Open git-diff failed");
3155         } else  {
3156                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3157                         unless %diffinfo;
3158         }
3159
3160         # header
3161         if ($format eq 'html') {
3162                 my $formats_nav =
3163                         $cgi->a({-href => href(action=>"blobdiff_plain",
3164                                                hash=>$hash, hash_parent=>$hash_parent,
3165                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3166                                                file_name=>$file_name, file_parent=>$file_parent)},
3167                                 "raw");
3168                 git_header_html(undef, $expires);
3169                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3170                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3171                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3172                 } else {
3173                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3174                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3175                 }
3176                 if (defined $file_name) {
3177                         git_print_page_path($file_name, "blob", $hash_base);
3178                 } else {
3179                         print "<div class=\"page_path\"></div>\n";
3180                 }
3181
3182         } elsif ($format eq 'plain') {
3183                 print $cgi->header(
3184                         -type => 'text/plain',
3185                         -charset => 'utf-8',
3186                         -expires => $expires,
3187                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3188
3189                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3190
3191         } else {
3192                 die_error(undef, "Unknown blobdiff format");
3193         }
3194
3195         # patch
3196         if ($format eq 'html') {
3197                 print "<div class=\"page_body\">\n";
3198
3199                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3200                 close $fd;
3201
3202                 print "</div>\n"; # class="page_body"
3203                 git_footer_html();
3204
3205         } else {
3206                 while (my $line = <$fd>) {
3207                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3208                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3209
3210                         print $line;
3211
3212                         last if $line =~ m!^\+\+\+!;
3213                 }
3214                 local $/ = undef;
3215                 print <$fd>;
3216                 close $fd;
3217         }
3218 }
3219
3220 sub git_blobdiff_plain {
3221         git_blobdiff('plain');
3222 }
3223
3224 sub git_commitdiff {
3225         my $format = shift || 'html';
3226         my %co = parse_commit($hash);
3227         if (!%co) {
3228                 die_error(undef, "Unknown commit object");
3229         }
3230         if (!defined $hash_parent) {
3231                 $hash_parent = $co{'parent'} || '--root';
3232         }
3233
3234         # read commitdiff
3235         my $fd;
3236         my @difftree;
3237         if ($format eq 'html') {
3238                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3239                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3240                         or die_error(undef, "Open git-diff-tree failed");
3241
3242                 while (chomp(my $line = <$fd>)) {
3243                         # empty line ends raw part of diff-tree output
3244                         last unless $line;
3245                         push @difftree, $line;
3246                 }
3247
3248         } elsif ($format eq 'plain') {
3249                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3250                         '-p', $hash_parent, $hash
3251                         or die_error(undef, "Open git-diff-tree failed");
3252
3253         } else {
3254                 die_error(undef, "Unknown commitdiff format");
3255         }
3256
3257         # non-textual hash id's can be cached
3258         my $expires;
3259         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3260                 $expires = "+1d";
3261         }
3262
3263         # write commit message
3264         if ($format eq 'html') {
3265                 my $refs = git_get_references();
3266                 my $ref = format_ref_marker($refs, $co{'id'});
3267                 my $formats_nav =
3268                         $cgi->a({-href => href(action=>"commitdiff_plain",
3269                                                hash=>$hash, hash_parent=>$hash_parent)},
3270                                 "raw");
3271
3272                 git_header_html(undef, $expires);
3273                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3274                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3275                 git_print_authorship(\%co);
3276                 print "<div class=\"page_body\">\n";
3277                 print "<div class=\"log\">\n";
3278                 git_print_simplified_log($co{'comment'}, 1); # skip title
3279                 print "</div>\n"; # class="log"
3280
3281         } elsif ($format eq 'plain') {
3282                 my $refs = git_get_references("tags");
3283                 my $tagname = git_get_rev_name_tags($hash);
3284                 my $filename = basename($project) . "-$hash.patch";
3285
3286                 print $cgi->header(
3287                         -type => 'text/plain',
3288                         -charset => 'utf-8',
3289                         -expires => $expires,
3290                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3291                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3292                 print <<TEXT;
3293 From: $co{'author'}
3294 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3295 Subject: $co{'title'}
3296 TEXT
3297                 print "X-Git-Tag: $tagname\n" if $tagname;
3298                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3299
3300                 foreach my $line (@{$co{'comment'}}) {
3301                         print "$line\n";
3302                 }
3303                 print "---\n\n";
3304         }
3305
3306         # write patch
3307         if ($format eq 'html') {
3308                 git_difftree_body(\@difftree, $hash, $hash_parent);
3309                 print "<br/>\n";
3310
3311                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3312                 close $fd;
3313                 print "</div>\n"; # class="page_body"
3314                 git_footer_html();
3315
3316         } elsif ($format eq 'plain') {
3317                 local $/ = undef;
3318                 print <$fd>;
3319                 close $fd
3320                         or print "Reading git-diff-tree failed\n";
3321         }
3322 }
3323
3324 sub git_commitdiff_plain {
3325         git_commitdiff('plain');
3326 }
3327
3328 sub git_history {
3329         if (!defined $hash_base) {
3330                 $hash_base = git_get_head_hash($project);
3331         }
3332         if (!defined $page) {
3333                 $page = 0;
3334         }
3335         my $ftype;
3336         my %co = parse_commit($hash_base);
3337         if (!%co) {
3338                 die_error(undef, "Unknown commit object");
3339         }
3340
3341         my $refs = git_get_references();
3342         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3343
3344         if (!defined $hash && defined $file_name) {
3345                 $hash = git_get_hash_by_path($hash_base, $file_name);
3346         }
3347         if (defined $hash) {
3348                 $ftype = git_get_type($hash);
3349         }
3350
3351         open my $fd, "-|",
3352                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3353                         or die_error(undef, "Open git-rev-list-failed");
3354         my @revlist = map { chomp; $_ } <$fd>;
3355         close $fd
3356                 or die_error(undef, "Reading git-rev-list failed");
3357
3358         my $paging_nav = '';
3359         if ($page > 0) {
3360                 $paging_nav .=
3361                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3362                                                file_name=>$file_name)},
3363                                 "first");
3364                 $paging_nav .= " &sdot; " .
3365                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3366                                                file_name=>$file_name, page=>$page-1),
3367                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3368         } else {
3369                 $paging_nav .= "first";
3370                 $paging_nav .= " &sdot; prev";
3371         }
3372         if ($#revlist >= (100 * ($page+1)-1)) {
3373                 $paging_nav .= " &sdot; " .
3374                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3375                                                file_name=>$file_name, page=>$page+1),
3376                                  -accesskey => "n", -title => "Alt-n"}, "next");
3377         } else {
3378                 $paging_nav .= " &sdot; next";
3379         }
3380         my $next_link = '';
3381         if ($#revlist >= (100 * ($page+1)-1)) {
3382                 $next_link =
3383                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3384                                                file_name=>$file_name, page=>$page+1),
3385                                  -title => "Alt-n"}, "next");
3386         }
3387
3388         git_header_html();
3389         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3390         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3391         git_print_page_path($file_name, $ftype, $hash_base);
3392
3393         git_history_body(\@revlist, ($page * 100), $#revlist,
3394                          $refs, $hash_base, $ftype, $next_link);
3395
3396         git_footer_html();
3397 }
3398
3399 sub git_search {
3400         if (!defined $searchtext) {
3401                 die_error(undef, "Text field empty");
3402         }
3403         if (!defined $hash) {
3404                 $hash = git_get_head_hash($project);
3405         }
3406         my %co = parse_commit($hash);
3407         if (!%co) {
3408                 die_error(undef, "Unknown commit object");
3409         }
3410
3411         my $commit_search = 1;
3412         my $author_search = 0;
3413         my $committer_search = 0;
3414         my $pickaxe_search = 0;
3415         if ($searchtext =~ s/^author\\://i) {
3416                 $author_search = 1;
3417         } elsif ($searchtext =~ s/^committer\\://i) {
3418                 $committer_search = 1;
3419         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3420                 $commit_search = 0;
3421                 $pickaxe_search = 1;
3422
3423                 # pickaxe may take all resources of your box and run for several minutes
3424                 # with every query - so decide by yourself how public you make this feature
3425                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3426                 if (!$have_pickaxe) {
3427                         die_error('403 Permission denied', "Permission denied");
3428                 }
3429         }
3430         git_header_html();
3431         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3432         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3433
3434         print "<table cellspacing=\"0\">\n";
3435         my $alternate = 1;
3436         if ($commit_search) {
3437                 $/ = "\0";
3438                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3439                 while (my $commit_text = <$fd>) {
3440                         if (!grep m/$searchtext/i, $commit_text) {
3441                                 next;
3442                         }
3443                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3444                                 next;
3445                         }
3446                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3447                                 next;
3448                         }
3449                         my @commit_lines = split "\n", $commit_text;
3450                         my %co = parse_commit(undef, \@commit_lines);
3451                         if (!%co) {
3452                                 next;
3453                         }
3454                         if ($alternate) {
3455                                 print "<tr class=\"dark\">\n";
3456                         } else {
3457                                 print "<tr class=\"light\">\n";
3458                         }
3459                         $alternate ^= 1;
3460                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3461                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3462                               "<td>" .
3463                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3464                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3465                         my $comment = $co{'comment'};
3466                         foreach my $line (@$comment) {
3467                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3468                                         my $lead = esc_html($1) || "";
3469                                         $lead = chop_str($lead, 30, 10);
3470                                         my $match = esc_html($2) || "";
3471                                         my $trail = esc_html($3) || "";
3472                                         $trail = chop_str($trail, 30, 10);
3473                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3474                                         print chop_str($text, 80, 5) . "<br/>\n";
3475                                 }
3476                         }
3477                         print "</td>\n" .
3478                               "<td class=\"link\">" .
3479                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3480                               " | " .
3481                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3482                         print "</td>\n" .
3483                               "</tr>\n";
3484                 }
3485                 close $fd;
3486         }
3487
3488         if ($pickaxe_search) {
3489                 $/ = "\n";
3490                 my $git_command = git_cmd_str();
3491                 open my $fd, "-|", "$git_command rev-list $hash | " .
3492                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3493                 undef %co;
3494                 my @files;
3495                 while (my $line = <$fd>) {
3496                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3497                                 my %set;
3498                                 $set{'file'} = $6;
3499                                 $set{'from_id'} = $3;
3500                                 $set{'to_id'} = $4;
3501                                 $set{'id'} = $set{'to_id'};
3502                                 if ($set{'id'} =~ m/0{40}/) {
3503                                         $set{'id'} = $set{'from_id'};
3504                                 }
3505                                 if ($set{'id'} =~ m/0{40}/) {
3506                                         next;
3507                                 }
3508                                 push @files, \%set;
3509                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3510                                 if (%co) {
3511                                         if ($alternate) {
3512                                                 print "<tr class=\"dark\">\n";
3513                                         } else {
3514                                                 print "<tr class=\"light\">\n";
3515                                         }
3516                                         $alternate ^= 1;
3517                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3518                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3519                                               "<td>" .
3520                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3521                                                       -class => "list subject"},
3522                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3523                                         while (my $setref = shift @files) {
3524                                                 my %set = %$setref;
3525                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3526                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3527                                                               -class => "list"},
3528                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3529                                                       "<br/>\n";
3530                                         }
3531                                         print "</td>\n" .
3532                                               "<td class=\"link\">" .
3533                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3534                                               " | " .
3535                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3536                                         print "</td>\n" .
3537                                               "</tr>\n";
3538                                 }
3539                                 %co = parse_commit($1);
3540                         }
3541                 }
3542                 close $fd;
3543         }
3544         print "</table>\n";
3545         git_footer_html();
3546 }
3547
3548 sub git_shortlog {
3549         my $head = git_get_head_hash($project);
3550         if (!defined $hash) {
3551                 $hash = $head;
3552         }
3553         if (!defined $page) {
3554                 $page = 0;
3555         }
3556         my $refs = git_get_references();
3557
3558         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3559         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3560                 or die_error(undef, "Open git-rev-list failed");
3561         my @revlist = map { chomp; $_ } <$fd>;
3562         close $fd;
3563
3564         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3565         my $next_link = '';
3566         if ($#revlist >= (100 * ($page+1)-1)) {
3567                 $next_link =
3568                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3569                                  -title => "Alt-n"}, "next");
3570         }
3571
3572
3573         git_header_html();
3574         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3575         git_print_header_div('summary', $project);
3576
3577         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3578
3579         git_footer_html();
3580 }
3581
3582 ## ......................................................................
3583 ## feeds (RSS, OPML)
3584
3585 sub git_rss {
3586         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3587         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3588                 or die_error(undef, "Open git-rev-list failed");
3589         my @revlist = map { chomp; $_ } <$fd>;
3590         close $fd or die_error(undef, "Reading git-rev-list failed");
3591         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3592         print <<XML;
3593 <?xml version="1.0" encoding="utf-8"?>
3594 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3595 <channel>
3596 <title>$project $my_uri $my_url</title>
3597 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3598 <description>$project log</description>
3599 <language>en</language>
3600 XML
3601
3602         for (my $i = 0; $i <= $#revlist; $i++) {
3603                 my $commit = $revlist[$i];
3604                 my %co = parse_commit($commit);
3605                 # we read 150, we always show 30 and the ones more recent than 48 hours
3606                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3607                         last;
3608                 }
3609                 my %cd = parse_date($co{'committer_epoch'});
3610                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3611                         $co{'parent'}, $co{'id'}
3612                         or next;
3613                 my @difftree = map { chomp; $_ } <$fd>;
3614                 close $fd
3615                         or next;
3616                 print "<item>\n" .
3617                       "<title>" .
3618                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3619                       "</title>\n" .
3620                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3621                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3622                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3623                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3624                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3625                       "<content:encoded>" .
3626                       "<![CDATA[\n";
3627                 my $comment = $co{'comment'};
3628                 foreach my $line (@$comment) {
3629                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3630                         print "$line<br/>\n";
3631                 }
3632                 print "<br/>\n";
3633                 foreach my $line (@difftree) {
3634                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3635                                 next;
3636                         }
3637                         my $file = esc_html(unquote($7));
3638                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3639                         print "$file<br/>\n";
3640                 }
3641                 print "]]>\n" .
3642                       "</content:encoded>\n" .
3643                       "</item>\n";
3644         }
3645         print "</channel></rss>";
3646 }
3647
3648 sub git_opml {
3649         my @list = git_get_projects_list();
3650
3651         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3652         print <<XML;
3653 <?xml version="1.0" encoding="utf-8"?>
3654 <opml version="1.0">
3655 <head>
3656   <title>$site_name Git OPML Export</title>
3657 </head>
3658 <body>
3659 <outline text="git RSS feeds">
3660 XML
3661
3662         foreach my $pr (@list) {
3663                 my %proj = %$pr;
3664                 my $head = git_get_head_hash($proj{'path'});
3665                 if (!defined $head) {
3666                         next;
3667                 }
3668                 $git_dir = "$projectroot/$proj{'path'}";
3669                 my %co = parse_commit($head);
3670                 if (!%co) {
3671                         next;
3672                 }
3673
3674                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3675                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3676                 my $html = "$my_url?p=$proj{'path'};a=summary";
3677                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3678         }
3679         print <<XML;
3680 </outline>
3681 </body>
3682 </opml>
3683 XML
3684 }