git.oblomov.eu Git - git/blob - gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # location for temporary files needed for diffs
  35 our $git_temp = "/tmp/gitweb";
  36
  37 # target of the home link on top of all pages
  38 our $home_link = $my_uri || "/";
  39
  40 # string of the home link on top of all pages
  41 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  42
  43 # name of your site or organization to appear in page titles
  44 # replace this with something more descriptive for clearer bookmarks
  45 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  46
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49
  50 # URI of default stylesheet
  51 our $stylesheet = "++GITWEB_CSS++";
  52 # URI of GIT logo
  53 our $logo = "++GITWEB_LOGO++";
  54
  55 # source of projects list
  56 our $projects_list = "++GITWEB_LIST++";
  57
  58 # list of git base URLs used for URL to where fetch project from,
  59 # i.e. full URL is "$git_base_url/$project"
  60 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  61
  62 # default blob_plain mimetype and default charset for text/plain blob
  63 our $default_blob_plain_mimetype = 'text/plain';
  64 our $default_text_plain_charset  = undef;
  65
  66 # file to use for guessing MIME types before trying /etc/mime.types
  67 # (relative to the current git repository)
  68 our $mimetypes_file = undef;
  69
  70 # You define site-wide feature defaults here; override them with
  71 # $GITWEB_CONFIG as necessary.
  72 our %feature = (
  73         # feature => {'sub' => feature-sub, 'override' => allow-override, 'default' => [ default options...]
  74         # if feature is overridable, feature-sub will be called with default options;
  75         # return value indicates if to enable specified feature
  76
  77         'blame' => {
  78                 'sub' => \&feature_blame,
  79                 'override' => 0,
  80                 'default' => [0]},
  81
  82         'snapshot' => {
  83                 'sub' => \&feature_snapshot,
  84                 'override' => 0,
  85                 #         => [content-encoding, suffix, program]
  86                 'default' => ['x-gzip', 'gz', 'gzip']},
  87 );
  88
  89 sub gitweb_check_feature {
  90         my ($name) = @_;
  91         return undef unless exists $feature{$name};
  92         my ($sub, $override, @defaults) = (
  93                 $feature{$name}{'sub'},
  94                 $feature{$name}{'override'},
  95                 @{$feature{$name}{'default'}});
  96         if (!$override) { return @defaults; }
  97         return $sub->(@defaults);
  98 }
  99
 100 # To enable system wide have in $GITWEB_CONFIG
 101 # $feature{'blame'}{'default'} =  [1];
 102 # To have project specific config enable override in  $GITWEB_CONFIG
 103 # $feature{'blame'}{'override'} =  1;
 104 # and in project config gitweb.blame = 0|1;
 105
 106 sub feature_blame {
 107         my ($val) = git_get_project_config('blame', '--bool');
 108
 109         if ($val eq 'true') {
 110                 return 1;
 111         } elsif ($val eq 'false') {
 112                 return 0;
 113         }
 114
 115         return $_[0];
 116 }
 117
 118 # To disable system wide have in $GITWEB_CONFIG
 119 # $feature{'snapshot'}{'default'} =  [undef];
 120 # To have project specific config enable override in  $GITWEB_CONFIG
 121 # $feature{'blame'}{'override'} =  1;
 122 # and in project config  gitweb.snapshot = none|gzip|bzip2
 123
 124 sub feature_snapshot {
 125         my ($ctype, $suffix, $command) = @_;
 126
 127         my ($val) = git_get_project_config('snapshot');
 128
 129         if ($val eq 'gzip') {
 130                 return ('x-gzip', 'gz', 'gzip');
 131         } elsif ($val eq 'bzip2') {
 132                 return ('x-bzip2', 'bz2', 'bzip2');
 133         } elsif ($val eq 'none') {
 134                 return ();
 135         }
 136
 137         return ($ctype, $suffix, $command);
 138 }
 139
 140 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 141 require $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 142
 143 # version of the core git binary
 144 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 145
 146 $projects_list ||= $projectroot;
 147 if (! -d $git_temp) {
 148         mkdir($git_temp, 0700) || die_error(undef, "Couldn't mkdir $git_temp");
 149 }
 150
 151 # ======================================================================
 152 # input validation and dispatch
 153 our $action = $cgi->param('a');
 154 if (defined $action) {
 155         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 156                 die_error(undef, "Invalid action parameter");
 157         }
 158 }
 159
 160 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
 161 if (defined $project) {
 162         $project =~ s|^/||;
 163         $project =~ s|/$||;
 164         $project = undef unless $project;
 165 }
 166 if (defined $project) {
 167         if (!validate_input($project)) {
 168                 die_error(undef, "Invalid project parameter");
 169         }
 170         if (!(-d "$projectroot/$project")) {
 171                 die_error(undef, "No such directory");
 172         }
 173         if (!(-e "$projectroot/$project/HEAD")) {
 174                 die_error(undef, "No such project");
 175         }
 176         $ENV{'GIT_DIR'} = "$projectroot/$project";
 177 }
 178
 179 our $file_name = $cgi->param('f');
 180 if (defined $file_name) {
 181         if (!validate_input($file_name)) {
 182                 die_error(undef, "Invalid file parameter");
 183         }
 184 }
 185
 186 our $file_parent = $cgi->param('fp');
 187 if (defined $file_parent) {
 188         if (!validate_input($file_parent)) {
 189                 die_error(undef, "Invalid file parent parameter");
 190         }
 191 }
 192
 193 our $hash = $cgi->param('h');
 194 if (defined $hash) {
 195         if (!validate_input($hash)) {
 196                 die_error(undef, "Invalid hash parameter");
 197         }
 198 }
 199
 200 our $hash_parent = $cgi->param('hp');
 201 if (defined $hash_parent) {
 202         if (!validate_input($hash_parent)) {
 203                 die_error(undef, "Invalid hash parent parameter");
 204         }
 205 }
 206
 207 our $hash_base = $cgi->param('hb');
 208 if (defined $hash_base) {
 209         if (!validate_input($hash_base)) {
 210                 die_error(undef, "Invalid hash base parameter");
 211         }
 212 }
 213
 214 our $hash_parent_base = $cgi->param('hpb');
 215 if (defined $hash_parent_base) {
 216         if (!validate_input($hash_parent_base)) {
 217                 die_error(undef, "Invalid hash parent base parameter");
 218         }
 219 }
 220
 221 our $page = $cgi->param('pg');
 222 if (defined $page) {
 223         if ($page =~ m/[^0-9]$/) {
 224                 die_error(undef, "Invalid page parameter");
 225         }
 226 }
 227
 228 our $searchtext = $cgi->param('s');
 229 if (defined $searchtext) {
 230         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 231                 die_error(undef, "Invalid search parameter");
 232         }
 233         $searchtext = quotemeta $searchtext;
 234 }
 235
 236 # dispatch
 237 my %actions = (
 238         "blame" => \&git_blame2,
 239         "blobdiff" => \&git_blobdiff,
 240         "blobdiff_plain" => \&git_blobdiff_plain,
 241         "blob" => \&git_blob,
 242         "blob_plain" => \&git_blob_plain,
 243         "commitdiff" => \&git_commitdiff,
 244         "commitdiff_plain" => \&git_commitdiff_plain,
 245         "commit" => \&git_commit,
 246         "heads" => \&git_heads,
 247         "history" => \&git_history,
 248         "log" => \&git_log,
 249         "rss" => \&git_rss,
 250         "search" => \&git_search,
 251         "shortlog" => \&git_shortlog,
 252         "summary" => \&git_summary,
 253         "tag" => \&git_tag,
 254         "tags" => \&git_tags,
 255         "tree" => \&git_tree,
 256         "snapshot" => \&git_snapshot,
 257         # those below don't need $project
 258         "opml" => \&git_opml,
 259         "project_list" => \&git_project_list,
 260 );
 261
 262 if (defined $project) {
 263         $action ||= 'summary';
 264 } else {
 265         $action ||= 'project_list';
 266 }
 267 if (!defined($actions{$action})) {
 268         die_error(undef, "Unknown action");
 269 }
 270 $actions{$action}->();
 271 exit;
 272
 273 ## ======================================================================
 274 ## action links
 275
 276 sub href(%) {
 277         my %params = @_;
 278
 279         my @mapping = (
 280                 project => "p",
 281                 action => "a",
 282                 file_name => "f",
 283                 file_parent => "fp",
 284                 hash => "h",
 285                 hash_parent => "hp",
 286                 hash_base => "hb",
 287                 hash_parent_base => "hpb",
 288                 page => "pg",
 289                 searchtext => "s",
 290         );
 291         my %mapping = @mapping;
 292
 293         $params{"project"} ||= $project;
 294
 295         my @result = ();
 296         for (my $i = 0; $i < @mapping; $i += 2) {
 297                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 298                 if (defined $params{$name}) {
 299                         push @result, $symbol . "=" . esc_param($params{$name});
 300                 }
 301         }
 302         return "$my_uri?" . join(';', @result);
 303 }
 304
 305
 306 ## ======================================================================
 307 ## validation, quoting/unquoting and escaping
 308
 309 sub validate_input {
 310         my $input = shift;
 311
 312         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 313                 return $input;
 314         }
 315         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 316                 return undef;
 317         }
 318         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 319                 return undef;
 320         }
 321         return $input;
 322 }
 323
 324 # quote unsafe chars, but keep the slash, even when it's not
 325 # correct, but quoted slashes look too horrible in bookmarks
 326 sub esc_param {
 327         my $str = shift;
 328         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 329         $str =~ s/\+/%2B/g;
 330         $str =~ s/ /\+/g;
 331         return $str;
 332 }
 333
 334 # replace invalid utf8 character with SUBSTITUTION sequence
 335 sub esc_html {
 336         my $str = shift;
 337         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 338         $str = escapeHTML($str);
 339         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 340         return $str;
 341 }
 342
 343 # git may return quoted and escaped filenames
 344 sub unquote {
 345         my $str = shift;
 346         if ($str =~ m/^"(.*)"$/) {
 347                 $str = $1;
 348                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 349         }
 350         return $str;
 351 }
 352
 353 # escape tabs (convert tabs to spaces)
 354 sub untabify {
 355         my $line = shift;
 356
 357         while ((my $pos = index($line, "\t")) != -1) {
 358                 if (my $count = (8 - ($pos % 8))) {
 359                         my $spaces = ' ' x $count;
 360                         $line =~ s/\t/$spaces/;
 361                 }
 362         }
 363
 364         return $line;
 365 }
 366
 367 ## ----------------------------------------------------------------------
 368 ## HTML aware string manipulation
 369
 370 sub chop_str {
 371         my $str = shift;
 372         my $len = shift;
 373         my $add_len = shift || 10;
 374
 375         # allow only $len chars, but don't cut a word if it would fit in $add_len
 376         # if it doesn't fit, cut it if it's still longer than the dots we would add
 377         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 378         my $body = $1;
 379         my $tail = $2;
 380         if (length($tail) > 4) {
 381                 $tail = " ...";
 382                 $body =~ s/&[^;]*$//; # remove chopped character entities
 383         }
 384         return "$body$tail";
 385 }
 386
 387 ## ----------------------------------------------------------------------
 388 ## functions returning short strings
 389
 390 # CSS class for given age value (in seconds)
 391 sub age_class {
 392         my $age = shift;
 393
 394         if ($age < 60*60*2) {
 395                 return "age0";
 396         } elsif ($age < 60*60*24*2) {
 397                 return "age1";
 398         } else {
 399                 return "age2";
 400         }
 401 }
 402
 403 # convert age in seconds to "nn units ago" string
 404 sub age_string {
 405         my $age = shift;
 406         my $age_str;
 407
 408         if ($age > 60*60*24*365*2) {
 409                 $age_str = (int $age/60/60/24/365);
 410                 $age_str .= " years ago";
 411         } elsif ($age > 60*60*24*(365/12)*2) {
 412                 $age_str = int $age/60/60/24/(365/12);
 413                 $age_str .= " months ago";
 414         } elsif ($age > 60*60*24*7*2) {
 415                 $age_str = int $age/60/60/24/7;
 416                 $age_str .= " weeks ago";
 417         } elsif ($age > 60*60*24*2) {
 418                 $age_str = int $age/60/60/24;
 419                 $age_str .= " days ago";
 420         } elsif ($age > 60*60*2) {
 421                 $age_str = int $age/60/60;
 422                 $age_str .= " hours ago";
 423         } elsif ($age > 60*2) {
 424                 $age_str = int $age/60;
 425                 $age_str .= " min ago";
 426         } elsif ($age > 2) {
 427                 $age_str = int $age;
 428                 $age_str .= " sec ago";
 429         } else {
 430                 $age_str .= " right now";
 431         }
 432         return $age_str;
 433 }
 434
 435 # convert file mode in octal to symbolic file mode string
 436 sub mode_str {
 437         my $mode = oct shift;
 438
 439         if (S_ISDIR($mode & S_IFMT)) {
 440                 return 'drwxr-xr-x';
 441         } elsif (S_ISLNK($mode)) {
 442                 return 'lrwxrwxrwx';
 443         } elsif (S_ISREG($mode)) {
 444                 # git cares only about the executable bit
 445                 if ($mode & S_IXUSR) {
 446                         return '-rwxr-xr-x';
 447                 } else {
 448                         return '-rw-r--r--';
 449                 };
 450         } else {
 451                 return '----------';
 452         }
 453 }
 454
 455 # convert file mode in octal to file type string
 456 sub file_type {
 457         my $mode = shift;
 458
 459         if ($mode !~ m/^[0-7]+$/) {
 460                 return $mode;
 461         } else {
 462                 $mode = oct $mode;
 463         }
 464
 465         if (S_ISDIR($mode & S_IFMT)) {
 466                 return "directory";
 467         } elsif (S_ISLNK($mode)) {
 468                 return "symlink";
 469         } elsif (S_ISREG($mode)) {
 470                 return "file";
 471         } else {
 472                 return "unknown";
 473         }
 474 }
 475
 476 ## ----------------------------------------------------------------------
 477 ## functions returning short HTML fragments, or transforming HTML fragments
 478 ## which don't beling to other sections
 479
 480 # format line of commit message or tag comment
 481 sub format_log_line_html {
 482         my $line = shift;
 483
 484         $line = esc_html($line);
 485         $line =~ s/ /&nbsp;/g;
 486         if ($line =~ m/([0-9a-fA-F]{40})/) {
 487                 my $hash_text = $1;
 488                 if (git_get_type($hash_text) eq "commit") {
 489                         my $link =
 490                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 491                                         -class => "text"}, $hash_text);
 492                         $line =~ s/$hash_text/$link/;
 493                 }
 494         }
 495         return $line;
 496 }
 497
 498 # format marker of refs pointing to given object
 499 sub format_ref_marker {
 500         my ($refs, $id) = @_;
 501         my $markers = '';
 502
 503         if (defined $refs->{$id}) {
 504                 foreach my $ref (@{$refs->{$id}}) {
 505                         my ($type, $name) = qw();
 506                         # e.g. tags/v2.6.11 or heads/next
 507                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 508                                 $type = $1;
 509                                 $name = $2;
 510                         } else {
 511                                 $type = "ref";
 512                                 $name = $ref;
 513                         }
 514
 515                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 516                 }
 517         }
 518
 519         if ($markers) {
 520                 return ' <span class="refs">'. $markers . '</span>';
 521         } else {
 522                 return "";
 523         }
 524 }
 525
 526 # format, perhaps shortened and with markers, title line
 527 sub format_subject_html {
 528         my ($long, $short, $href, $extra) = @_;
 529         $extra = '' unless defined($extra);
 530
 531         if (length($short) < length($long)) {
 532                 return $cgi->a({-href => $href, -class => "list subject",
 533                                 -title => $long},
 534                        esc_html($short) . $extra);
 535         } else {
 536                 return $cgi->a({-href => $href, -class => "list subject"},
 537                        esc_html($long)  . $extra);
 538         }
 539 }
 540
 541 sub format_diff_line {
 542         my $line = shift;
 543         my $char = substr($line, 0, 1);
 544         my $diff_class = "";
 545
 546         chomp $line;
 547
 548         if ($char eq '+') {
 549                 $diff_class = " add";
 550         } elsif ($char eq "-") {
 551                 $diff_class = " rem";
 552         } elsif ($char eq "@") {
 553                 $diff_class = " chunk_header";
 554         } elsif ($char eq "\\") {
 555                 $diff_class = " incomplete";
 556         }
 557         $line = untabify($line);
 558         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 559 }
 560
 561 ## ----------------------------------------------------------------------
 562 ## git utility subroutines, invoking git commands
 563
 564 # get HEAD ref of given project as hash
 565 sub git_get_head_hash {
 566         my $project = shift;
 567         my $oENV = $ENV{'GIT_DIR'};
 568         my $retval = undef;
 569         $ENV{'GIT_DIR'} = "$projectroot/$project";
 570         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 571                 my $head = <$fd>;
 572                 close $fd;
 573                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 574                         $retval = $1;
 575                 }
 576         }
 577         if (defined $oENV) {
 578                 $ENV{'GIT_DIR'} = $oENV;
 579         }
 580         return $retval;
 581 }
 582
 583 # get type of given object
 584 sub git_get_type {
 585         my $hash = shift;
 586
 587         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 588         my $type = <$fd>;
 589         close $fd or return;
 590         chomp $type;
 591         return $type;
 592 }
 593
 594 sub git_get_project_config {
 595         my ($key, $type) = @_;
 596
 597         return unless ($key);
 598         $key =~ s/^gitweb\.//;
 599         return if ($key =~ m/\W/);
 600
 601         my @x = ($GIT, 'repo-config');
 602         if (defined $type) { push @x, $type; }
 603         push @x, "--get";
 604         push @x, "gitweb.$key";
 605         my $val = qx(@x);
 606         chomp $val;
 607         return ($val);
 608 }
 609
 610 # get hash of given path at given ref
 611 sub git_get_hash_by_path {
 612         my $base = shift;
 613         my $path = shift || return undef;
 614
 615         my $tree = $base;
 616
 617         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 618                 or die_error(undef, "Open git-ls-tree failed");
 619         my $line = <$fd>;
 620         close $fd or return undef;
 621
 622         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 623         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 624         return $3;
 625 }
 626
 627 # converts symbolic name to hash
 628 sub git_to_hash {
 629         my @params = @_;
 630         return undef unless @params;
 631
 632         open my $fd, "-|", $GIT, "rev-parse", @params
 633                 or return undef;
 634         my @hashes = map { chomp; $_ } <$fd>;
 635         close $fd;
 636
 637         if (wantarray) {
 638                 return @hashes;
 639         } elsif (scalar(@hashes) == 1) {
 640                 # single hash
 641                 return $hashes[0];
 642         } else {
 643                 return \@hashes;
 644         }
 645 }
 646
 647 ## ......................................................................
 648 ## git utility functions, directly accessing git repository
 649
 650 # assumes that PATH is not symref
 651 sub git_get_hash_by_ref {
 652         my $path = shift;
 653
 654         open my $fd, "$projectroot/$path" or return undef;
 655         my $head = <$fd>;
 656         close $fd;
 657         chomp $head;
 658         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 659                 return $head;
 660         }
 661 }
 662
 663 sub git_get_project_description {
 664         my $path = shift;
 665
 666         open my $fd, "$projectroot/$path/description" or return undef;
 667         my $descr = <$fd>;
 668         close $fd;
 669         chomp $descr;
 670         return $descr;
 671 }
 672
 673 sub git_get_project_url_list {
 674         my $path = shift;
 675
 676         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 677         my @git_project_url_list = map { chomp; $_ } <$fd>;
 678         close $fd;
 679
 680         return wantarray ? @git_project_url_list : \@git_project_url_list;
 681 }
 682
 683 sub git_get_projects_list {
 684         my @list;
 685
 686         if (-d $projects_list) {
 687                 # search in directory
 688                 my $dir = $projects_list;
 689                 opendir my ($dh), $dir or return undef;
 690                 while (my $dir = readdir($dh)) {
 691                         if (-e "$projectroot/$dir/HEAD") {
 692                                 my $pr = {
 693                                         path => $dir,
 694                                 };
 695                                 push @list, $pr
 696                         }
 697                 }
 698                 closedir($dh);
 699         } elsif (-f $projects_list) {
 700                 # read from file(url-encoded):
 701                 # 'git%2Fgit.git Linus+Torvalds'
 702                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 703                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 704                 open my ($fd), $projects_list or return undef;
 705                 while (my $line = <$fd>) {
 706                         chomp $line;
 707                         my ($path, $owner) = split ' ', $line;
 708                         $path = unescape($path);
 709                         $owner = unescape($owner);
 710                         if (!defined $path) {
 711                                 next;
 712                         }
 713                         if (-e "$projectroot/$path/HEAD") {
 714                                 my $pr = {
 715                                         path => $path,
 716                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 717                                 };
 718                                 push @list, $pr
 719                         }
 720                 }
 721                 close $fd;
 722         }
 723         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 724         return @list;
 725 }
 726
 727 sub git_get_project_owner {
 728         my $project = shift;
 729         my $owner;
 730
 731         return undef unless $project;
 732
 733         # read from file (url-encoded):
 734         # 'git%2Fgit.git Linus+Torvalds'
 735         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 736         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 737         if (-f $projects_list) {
 738                 open (my $fd , $projects_list);
 739                 while (my $line = <$fd>) {
 740                         chomp $line;
 741                         my ($pr, $ow) = split ' ', $line;
 742                         $pr = unescape($pr);
 743                         $ow = unescape($ow);
 744                         if ($pr eq $project) {
 745                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 746                                 last;
 747                         }
 748                 }
 749                 close $fd;
 750         }
 751         if (!defined $owner) {
 752                 $owner = get_file_owner("$projectroot/$project");
 753         }
 754
 755         return $owner;
 756 }
 757
 758 sub git_get_references {
 759         my $type = shift || "";
 760         my %refs;
 761         my $fd;
 762         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 763         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 764         if (-f "$projectroot/$project/info/refs") {
 765                 open $fd, "$projectroot/$project/info/refs"
 766                         or return;
 767         } else {
 768                 open $fd, "-|", $GIT, "ls-remote", "."
 769                         or return;
 770         }
 771
 772         while (my $line = <$fd>) {
 773                 chomp $line;
 774                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 775                         if (defined $refs{$1}) {
 776                                 push @{$refs{$1}}, $2;
 777                         } else {
 778                                 $refs{$1} = [ $2 ];
 779                         }
 780                 }
 781         }
 782         close $fd or return;
 783         return \%refs;
 784 }
 785
 786 sub git_get_following_references {
 787         my $hash = shift || return undef;
 788         my $type = shift;
 789         my $base = shift || $hash_base || "HEAD";
 790
 791         my $refs = git_get_references($type);
 792         open my $fd, "-|", $GIT, "rev-list", $base
 793                 or return undef;
 794         my @commits = map { chomp; $_ } <$fd>;
 795         close $fd
 796                 or return undef;
 797
 798         my @reflist;
 799         my $lastref;
 800
 801         foreach my $commit (@commits) {
 802                 foreach my $ref (@{$refs->{$commit}}) {
 803                         $lastref = $ref;
 804                         push @reflist, $lastref;
 805                 }
 806                 if ($commit eq $hash) {
 807                         last;
 808                 }
 809         }
 810
 811         return wantarray ? @reflist : $lastref;
 812 }
 813
 814 sub git_get_preceding_references {
 815         my $hash = shift || return undef;
 816         my $type = shift;
 817
 818         my $refs = git_get_references($type);
 819         open my $fd, "-|", $GIT, "rev-list", $hash
 820                 or return undef;
 821         my @commits = map { chomp; $_ } <$fd>;
 822         close $fd
 823                 or return undef;
 824
 825         my @reflist;
 826
 827         foreach my $commit (@commits) {
 828                 foreach my $ref (@{$refs->{$commit}}) {
 829                         return $ref unless wantarray;
 830                         push @reflist, $ref;
 831                 }
 832         }
 833
 834         return @reflist;
 835 }
 836
 837 sub git_get_rev_name_tags {
 838         my $hash = shift || return undef;
 839
 840         open my $fd, "-|", $GIT, "name-rev", "--tags", $hash
 841                 or return;
 842         my $name_rev = <$fd>;
 843         close $fd;
 844
 845         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 846                 return $1;
 847         } else {
 848                 # catches also '$hash undefined' output
 849                 return undef;
 850         }
 851 }
 852
 853 ## ----------------------------------------------------------------------
 854 ## parse to hash functions
 855
 856 sub parse_date {
 857         my $epoch = shift;
 858         my $tz = shift || "-0000";
 859
 860         my %date;
 861         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 862         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 863         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 864         $date{'hour'} = $hour;
 865         $date{'minute'} = $min;
 866         $date{'mday'} = $mday;
 867         $date{'day'} = $days[$wday];
 868         $date{'month'} = $months[$mon];
 869         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 870                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 871         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 872                              $mday, $months[$mon], $hour ,$min;
 873
 874         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 875         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 876         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 877         $date{'hour_local'} = $hour;
 878         $date{'minute_local'} = $min;
 879         $date{'tz_local'} = $tz;
 880         return %date;
 881 }
 882
 883 sub parse_tag {
 884         my $tag_id = shift;
 885         my %tag;
 886         my @comment;
 887
 888         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 889         $tag{'id'} = $tag_id;
 890         while (my $line = <$fd>) {
 891                 chomp $line;
 892                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 893                         $tag{'object'} = $1;
 894                 } elsif ($line =~ m/^type (.+)$/) {
 895                         $tag{'type'} = $1;
 896                 } elsif ($line =~ m/^tag (.+)$/) {
 897                         $tag{'name'} = $1;
 898                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 899                         $tag{'author'} = $1;
 900                         $tag{'epoch'} = $2;
 901                         $tag{'tz'} = $3;
 902                 } elsif ($line =~ m/--BEGIN/) {
 903                         push @comment, $line;
 904                         last;
 905                 } elsif ($line eq "") {
 906                         last;
 907                 }
 908         }
 909         push @comment, <$fd>;
 910         $tag{'comment'} = \@comment;
 911         close $fd or return;
 912         if (!defined $tag{'name'}) {
 913                 return
 914         };
 915         return %tag
 916 }
 917
 918 sub parse_commit {
 919         my $commit_id = shift;
 920         my $commit_text = shift;
 921
 922         my @commit_lines;
 923         my %co;
 924
 925         if (defined $commit_text) {
 926                 @commit_lines = @$commit_text;
 927         } else {
 928                 $/ = "\0";
 929                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id
 930                         or return;
 931                 @commit_lines = split '\n', <$fd>;
 932                 close $fd or return;
 933                 $/ = "\n";
 934                 pop @commit_lines;
 935         }
 936         my $header = shift @commit_lines;
 937         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 938                 return;
 939         }
 940         ($co{'id'}, my @parents) = split ' ', $header;
 941         $co{'parents'} = \@parents;
 942         $co{'parent'} = $parents[0];
 943         while (my $line = shift @commit_lines) {
 944                 last if $line eq "\n";
 945                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 946                         $co{'tree'} = $1;
 947                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 948                         $co{'author'} = $1;
 949                         $co{'author_epoch'} = $2;
 950                         $co{'author_tz'} = $3;
 951                         if ($co{'author'} =~ m/^([^<]+) </) {
 952                                 $co{'author_name'} = $1;
 953                         } else {
 954                                 $co{'author_name'} = $co{'author'};
 955                         }
 956                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 957                         $co{'committer'} = $1;
 958                         $co{'committer_epoch'} = $2;
 959                         $co{'committer_tz'} = $3;
 960                         $co{'committer_name'} = $co{'committer'};
 961                         $co{'committer_name'} =~ s/ <.*//;
 962                 }
 963         }
 964         if (!defined $co{'tree'}) {
 965                 return;
 966         };
 967
 968         foreach my $title (@commit_lines) {
 969                 $title =~ s/^    //;
 970                 if ($title ne "") {
 971                         $co{'title'} = chop_str($title, 80, 5);
 972                         # remove leading stuff of merges to make the interesting part visible
 973                         if (length($title) > 50) {
 974                                 $title =~ s/^Automatic //;
 975                                 $title =~ s/^merge (of|with) /Merge ... /i;
 976                                 if (length($title) > 50) {
 977                                         $title =~ s/(http|rsync):\/\///;
 978                                 }
 979                                 if (length($title) > 50) {
 980                                         $title =~ s/(master|www|rsync)\.//;
 981                                 }
 982                                 if (length($title) > 50) {
 983                                         $title =~ s/kernel.org:?//;
 984                                 }
 985                                 if (length($title) > 50) {
 986                                         $title =~ s/\/pub\/scm//;
 987                                 }
 988                         }
 989                         $co{'title_short'} = chop_str($title, 50, 5);
 990                         last;
 991                 }
 992         }
 993         # remove added spaces
 994         foreach my $line (@commit_lines) {
 995                 $line =~ s/^    //;
 996         }
 997         $co{'comment'} = \@commit_lines;
 998
 999         my $age = time - $co{'committer_epoch'};
1000         $co{'age'} = $age;
1001         $co{'age_string'} = age_string($age);
1002         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1003         if ($age > 60*60*24*7*2) {
1004                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1005                 $co{'age_string_age'} = $co{'age_string'};
1006         } else {
1007                 $co{'age_string_date'} = $co{'age_string'};
1008                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1009         }
1010         return %co;
1011 }
1012
1013 # parse ref from ref_file, given by ref_id, with given type
1014 sub parse_ref {
1015         my $ref_file = shift;
1016         my $ref_id = shift;
1017         my $type = shift || git_get_type($ref_id);
1018         my %ref_item;
1019
1020         $ref_item{'type'} = $type;
1021         $ref_item{'id'} = $ref_id;
1022         $ref_item{'epoch'} = 0;
1023         $ref_item{'age'} = "unknown";
1024         if ($type eq "tag") {
1025                 my %tag = parse_tag($ref_id);
1026                 $ref_item{'comment'} = $tag{'comment'};
1027                 if ($tag{'type'} eq "commit") {
1028                         my %co = parse_commit($tag{'object'});
1029                         $ref_item{'epoch'} = $co{'committer_epoch'};
1030                         $ref_item{'age'} = $co{'age_string'};
1031                 } elsif (defined($tag{'epoch'})) {
1032                         my $age = time - $tag{'epoch'};
1033                         $ref_item{'epoch'} = $tag{'epoch'};
1034                         $ref_item{'age'} = age_string($age);
1035                 }
1036                 $ref_item{'reftype'} = $tag{'type'};
1037                 $ref_item{'name'} = $tag{'name'};
1038                 $ref_item{'refid'} = $tag{'object'};
1039         } elsif ($type eq "commit"){
1040                 my %co = parse_commit($ref_id);
1041                 $ref_item{'reftype'} = "commit";
1042                 $ref_item{'name'} = $ref_file;
1043                 $ref_item{'title'} = $co{'title'};
1044                 $ref_item{'refid'} = $ref_id;
1045                 $ref_item{'epoch'} = $co{'committer_epoch'};
1046                 $ref_item{'age'} = $co{'age_string'};
1047         } else {
1048                 $ref_item{'reftype'} = $type;
1049                 $ref_item{'name'} = $ref_file;
1050                 $ref_item{'refid'} = $ref_id;
1051         }
1052
1053         return %ref_item;
1054 }
1055
1056 # parse line of git-diff-tree "raw" output
1057 sub parse_difftree_raw_line {
1058         my $line = shift;
1059         my %res;
1060
1061         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1062         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1063         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1064                 $res{'from_mode'} = $1;
1065                 $res{'to_mode'} = $2;
1066                 $res{'from_id'} = $3;
1067                 $res{'to_id'} = $4;
1068                 $res{'status'} = $5;
1069                 $res{'similarity'} = $6;
1070                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1071                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1072                 } else {
1073                         $res{'file'} = unquote($7);
1074                 }
1075         }
1076         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1077         #elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1078         #       $res{'commit'} = $1;
1079         #}
1080
1081         return wantarray ? %res : \%res;
1082 }
1083
1084 ## ......................................................................
1085 ## parse to array of hashes functions
1086
1087 sub git_get_refs_list {
1088         my $ref_dir = shift;
1089         my @reflist;
1090
1091         my @refs;
1092         my $pfxlen = length("$projectroot/$project/$ref_dir");
1093         File::Find::find(sub {
1094                 return if (/^\./);
1095                 if (-f $_) {
1096                         push @refs, substr($File::Find::name, $pfxlen + 1);
1097                 }
1098         }, "$projectroot/$project/$ref_dir");
1099
1100         foreach my $ref_file (@refs) {
1101                 my $ref_id = git_get_hash_by_ref("$project/$ref_dir/$ref_file");
1102                 my $type = git_get_type($ref_id) || next;
1103                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1104
1105                 push @reflist, \%ref_item;
1106         }
1107         # sort refs by age
1108         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1109         return \@reflist;
1110 }
1111
1112 ## ----------------------------------------------------------------------
1113 ## filesystem-related functions
1114
1115 sub get_file_owner {
1116         my $path = shift;
1117
1118         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1119         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1120         if (!defined $gcos) {
1121                 return undef;
1122         }
1123         my $owner = $gcos;
1124         $owner =~ s/[,;].*$//;
1125         return decode("utf8", $owner, Encode::FB_DEFAULT);
1126 }
1127
1128 ## ......................................................................
1129 ## mimetype related functions
1130
1131 sub mimetype_guess_file {
1132         my $filename = shift;
1133         my $mimemap = shift;
1134         -r $mimemap or return undef;
1135
1136         my %mimemap;
1137         open(MIME, $mimemap) or return undef;
1138         while (<MIME>) {
1139                 next if m/^#/; # skip comments
1140                 my ($mime, $exts) = split(/\t+/);
1141                 if (defined $exts) {
1142                         my @exts = split(/\s+/, $exts);
1143                         foreach my $ext (@exts) {
1144                                 $mimemap{$ext} = $mime;
1145                         }
1146                 }
1147         }
1148         close(MIME);
1149
1150         $filename =~ /\.(.*?)$/;
1151         return $mimemap{$1};
1152 }
1153
1154 sub mimetype_guess {
1155         my $filename = shift;
1156         my $mime;
1157         $filename =~ /\./ or return undef;
1158
1159         if ($mimetypes_file) {
1160                 my $file = $mimetypes_file;
1161                 if ($file !~ m!^/!) { # if it is relative path
1162                         # it is relative to project
1163                         $file = "$projectroot/$project/$file";
1164                 }
1165                 $mime = mimetype_guess_file($filename, $file);
1166         }
1167         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1168         return $mime;
1169 }
1170
1171 sub blob_mimetype {
1172         my $fd = shift;
1173         my $filename = shift;
1174
1175         if ($filename) {
1176                 my $mime = mimetype_guess($filename);
1177                 $mime and return $mime;
1178         }
1179
1180         # just in case
1181         return $default_blob_plain_mimetype unless $fd;
1182
1183         if (-T $fd) {
1184                 return 'text/plain' .
1185                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1186         } elsif (! $filename) {
1187                 return 'application/octet-stream';
1188         } elsif ($filename =~ m/\.png$/i) {
1189                 return 'image/png';
1190         } elsif ($filename =~ m/\.gif$/i) {
1191                 return 'image/gif';
1192         } elsif ($filename =~ m/\.jpe?g$/i) {
1193                 return 'image/jpeg';
1194         } else {
1195                 return 'application/octet-stream';
1196         }
1197 }
1198
1199 ## ======================================================================
1200 ## functions printing HTML: header, footer, error page
1201
1202 sub git_header_html {
1203         my $status = shift || "200 OK";
1204         my $expires = shift;
1205
1206         my $title = "$site_name git";
1207         if (defined $project) {
1208                 $title .= " - $project";
1209                 if (defined $action) {
1210                         $title .= "/$action";
1211                         if (defined $file_name) {
1212                                 $title .= " - $file_name";
1213                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1214                                         $title .= "/";
1215                                 }
1216                         }
1217                 }
1218         }
1219         my $content_type;
1220         # require explicit support from the UA if we are to send the page as
1221         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1222         # we have to do this because MSIE sometimes globs '*/*', pretending to
1223         # support xhtml+xml but choking when it gets what it asked for.
1224         if (defined $cgi->http('HTTP_ACCEPT') &&
1225             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1226             $cgi->Accept('application/xhtml+xml') != 0) {
1227                 $content_type = 'application/xhtml+xml';
1228         } else {
1229                 $content_type = 'text/html';
1230         }
1231         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1232                            -status=> $status, -expires => $expires);
1233         print <<EOF;
1234 <?xml version="1.0" encoding="utf-8"?>
1235 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1236 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1237 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1238 <!-- git core binaries version $git_version -->
1239 <head>
1240 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1241 <meta name="generator" content="gitweb/$version git/$git_version"/>
1242 <meta name="robots" content="index, nofollow"/>
1243 <title>$title</title>
1244 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1245 EOF
1246         if (defined $project) {
1247                 printf('<link rel="alternate" title="%s log" '.
1248                        'href="%s" type="application/rss+xml"/>'."\n",
1249                        esc_param($project), href(action=>"rss"));
1250         }
1251
1252         print "</head>\n" .
1253               "<body>\n" .
1254               "<div class=\"page_header\">\n" .
1255               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1256               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1257               "</a>\n";
1258         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1259         if (defined $project) {
1260                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1261                 if (defined $action) {
1262                         print " / $action";
1263                 }
1264                 print "\n";
1265                 if (!defined $searchtext) {
1266                         $searchtext = "";
1267                 }
1268                 my $search_hash;
1269                 if (defined $hash_base) {
1270                         $search_hash = $hash_base;
1271                 } elsif (defined $hash) {
1272                         $search_hash = $hash;
1273                 } else {
1274                         $search_hash = "HEAD";
1275                 }
1276                 $cgi->param("a", "search");
1277                 $cgi->param("h", $search_hash);
1278                 print $cgi->startform(-method => "get", -action => $my_uri) .
1279                       "<div class=\"search\">\n" .
1280                       $cgi->hidden(-name => "p") . "\n" .
1281                       $cgi->hidden(-name => "a") . "\n" .
1282                       $cgi->hidden(-name => "h") . "\n" .
1283                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1284                       "</div>" .
1285                       $cgi->end_form() . "\n";
1286         }
1287         print "</div>\n";
1288 }
1289
1290 sub git_footer_html {
1291         print "<div class=\"page_footer\">\n";
1292         if (defined $project) {
1293                 my $descr = git_get_project_description($project);
1294                 if (defined $descr) {
1295                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1296                 }
1297                 print $cgi->a({-href => href(action=>"rss"), -class => "rss_logo"}, "RSS") . "\n";
1298         } else {
1299                 print $cgi->a({-href => href(action=>"opml"), -class => "rss_logo"}, "OPML") . "\n";
1300         }
1301         print "</div>\n" .
1302               "</body>\n" .
1303               "</html>";
1304 }
1305
1306 sub die_error {
1307         my $status = shift || "403 Forbidden";
1308         my $error = shift || "Malformed query, file missing or permission denied";
1309
1310         git_header_html($status);
1311         print <<EOF;
1312 <div class="page_body">
1313 <br /><br />
1314 $status - $error
1315 <br />
1316 </div>
1317 EOF
1318         git_footer_html();
1319         exit;
1320 }
1321
1322 ## ----------------------------------------------------------------------
1323 ## functions printing or outputting HTML: navigation
1324
1325 sub git_print_page_nav {
1326         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1327         $extra = '' if !defined $extra; # pager or formats
1328
1329         my @navs = qw(summary shortlog log commit commitdiff tree);
1330         if ($suppress) {
1331                 @navs = grep { $_ ne $suppress } @navs;
1332         }
1333
1334         my %arg = map { $_ => {action=>$_} } @navs;
1335         if (defined $head) {
1336                 for (qw(commit commitdiff)) {
1337                         $arg{$_}{hash} = $head;
1338                 }
1339                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1340                         for (qw(shortlog log)) {
1341                                 $arg{$_}{hash} = $head;
1342                         }
1343                 }
1344         }
1345         $arg{tree}{hash} = $treehead if defined $treehead;
1346         $arg{tree}{hash_base} = $treebase if defined $treebase;
1347
1348         print "<div class=\"page_nav\">\n" .
1349                 (join " | ",
1350                  map { $_ eq $current ?
1351                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1352                  } @navs);
1353         print "<br/>\n$extra<br/>\n" .
1354               "</div>\n";
1355 }
1356
1357 sub format_paging_nav {
1358         my ($action, $hash, $head, $page, $nrevs) = @_;
1359         my $paging_nav;
1360
1361
1362         if ($hash ne $head || $page) {
1363                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1364         } else {
1365                 $paging_nav .= "HEAD";
1366         }
1367
1368         if ($page > 0) {
1369                 $paging_nav .= " &sdot; " .
1370                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1371                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1372         } else {
1373                 $paging_nav .= " &sdot; prev";
1374         }
1375
1376         if ($nrevs >= (100 * ($page+1)-1)) {
1377                 $paging_nav .= " &sdot; " .
1378                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1379                                  -accesskey => "n", -title => "Alt-n"}, "next");
1380         } else {
1381                 $paging_nav .= " &sdot; next";
1382         }
1383
1384         return $paging_nav;
1385 }
1386
1387 ## ......................................................................
1388 ## functions printing or outputting HTML: div
1389
1390 sub git_print_header_div {
1391         my ($action, $title, $hash, $hash_base) = @_;
1392         my %args = ();
1393
1394         $args{action} = $action;
1395         $args{hash} = $hash if $hash;
1396         $args{hash_base} = $hash_base if $hash_base;
1397
1398         print "<div class=\"header\">\n" .
1399               $cgi->a({-href => href(%args), -class => "title"},
1400               $title ? $title : $action) .
1401               "\n</div>\n";
1402 }
1403
1404 sub git_print_page_path {
1405         my $name = shift;
1406         my $type = shift;
1407         my $hb = shift;
1408
1409         if (!defined $name) {
1410                 print "<div class=\"page_path\">/</div>\n";
1411         } elsif (defined $type && $type eq 'blob') {
1412                 print "<div class=\"page_path\">";
1413                 if (defined $hb) {
1414                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1415                                                      hash_base=>$hb)},
1416                                       esc_html($name));
1417                 } else {
1418                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name)},
1419                                       esc_html($name));
1420                 }
1421                 print "<br/></div>\n";
1422         } else {
1423                 print "<div class=\"page_path\">" . esc_html($name) . "<br/></div>\n";
1424         }
1425 }
1426
1427 sub git_print_log {
1428         my $log = shift;
1429
1430         # remove leading empty lines
1431         while (defined $log->[0] && $log->[0] eq "") {
1432                 shift @$log;
1433         }
1434
1435         # print log
1436         my $signoff = 0;
1437         my $empty = 0;
1438         foreach my $line (@$log) {
1439                 # print only one empty line
1440                 # do not print empty line after signoff
1441                 if ($line eq "") {
1442                         next if ($empty || $signoff);
1443                         $empty = 1;
1444                 } else {
1445                         $empty = 0;
1446                 }
1447                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1448                         $signoff = 1;
1449                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1450                 } else {
1451                         $signoff = 0;
1452                         print format_log_line_html($line) . "<br/>\n";
1453                 }
1454         }
1455 }
1456
1457 sub git_print_simplified_log {
1458         my $log = shift;
1459         my $remove_title = shift;
1460
1461         shift @$log if $remove_title;
1462         # remove leading empty lines
1463         while (defined $log->[0] && $log->[0] eq "") {
1464                 shift @$log;
1465         }
1466
1467         # simplify and print log
1468         my $empty = 0;
1469         foreach my $line (@$log) {
1470                 # remove signoff lines
1471                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1472                         next;
1473                 }
1474                 # print only one empty line
1475                 if ($line eq "") {
1476                         next if $empty;
1477                         $empty = 1;
1478                 } else {
1479                         $empty = 0;
1480                 }
1481                 print format_log_line_html($line) . "<br/>\n";
1482         }
1483         # end with single empty line
1484         print "<br/>\n" unless $empty;
1485 }
1486
1487 ## ......................................................................
1488 ## functions printing large fragments of HTML
1489
1490 sub git_difftree_body {
1491         my ($difftree, $hash, $parent) = @_;
1492
1493         print "<div class=\"list_head\">\n";
1494         if ($#{$difftree} > 10) {
1495                 print(($#{$difftree} + 1) . " files changed:\n");
1496         }
1497         print "</div>\n";
1498
1499         print "<table class=\"diff_tree\">\n";
1500         my $alternate = 0;
1501         foreach my $line (@{$difftree}) {
1502                 my %diff = parse_difftree_raw_line($line);
1503
1504                 if ($alternate) {
1505                         print "<tr class=\"dark\">\n";
1506                 } else {
1507                         print "<tr class=\"light\">\n";
1508                 }
1509                 $alternate ^= 1;
1510
1511                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1512                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1513                 if ($diff{'to_mode'} ne ('0' x 6)) {
1514                         $to_mode_oct = oct $diff{'to_mode'};
1515                         if (S_ISREG($to_mode_oct)) { # only for regular file
1516                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1517                         }
1518                         $to_file_type = file_type($diff{'to_mode'});
1519                 }
1520                 if ($diff{'from_mode'} ne ('0' x 6)) {
1521                         $from_mode_oct = oct $diff{'from_mode'};
1522                         if (S_ISREG($to_mode_oct)) { # only for regular file
1523                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1524                         }
1525                         $from_file_type = file_type($diff{'from_mode'});
1526                 }
1527
1528                 if ($diff{'status'} eq "A") { # created
1529                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1530                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1531                         $mode_chng   .= "]</span>";
1532                         print "<td>" .
1533                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1534                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1535                                       -class => "list"}, esc_html($diff{'file'})) .
1536                               "</td>\n" .
1537                               "<td>$mode_chng</td>\n" .
1538                               "<td class=\"link\">" .
1539                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1540                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1541                                       "blob") .
1542                               "</td>\n";
1543
1544                 } elsif ($diff{'status'} eq "D") { # deleted
1545                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1546                         print "<td>" .
1547                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1548                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1549                                        -class => "list"}, esc_html($diff{'file'})) .
1550                               "</td>\n" .
1551                               "<td>$mode_chng</td>\n" .
1552                               "<td class=\"link\">" .
1553                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1554                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1555                                       "blob") .
1556                               " | " .
1557                               $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1558                                                      file_name=>$diff{'file'})},\
1559                                       "history") .
1560                               "</td>\n";
1561
1562                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1563                         my $mode_chnge = "";
1564                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1565                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1566                                 if ($from_file_type != $to_file_type) {
1567                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1568                                 }
1569                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1570                                         if ($from_mode_str && $to_mode_str) {
1571                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1572                                         } elsif ($to_mode_str) {
1573                                                 $mode_chnge .= " mode: $to_mode_str";
1574                                         }
1575                                 }
1576                                 $mode_chnge .= "]</span>\n";
1577                         }
1578                         print "<td>";
1579                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1580                                 print $cgi->a({-href => href(action=>"blobdiff",
1581                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1582                                                              hash_base=>$hash, hash_parent_base=>$parent,
1583                                                              file_name=>$diff{'file'}),
1584                                               -class => "list"}, esc_html($diff{'file'}));
1585                         } else { # only mode changed
1586                                 print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1587                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1588                                               -class => "list"}, esc_html($diff{'file'}));
1589                         }
1590                         print "</td>\n" .
1591                               "<td>$mode_chnge</td>\n" .
1592                               "<td class=\"link\">" .
1593                                 $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1594                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1595                                         "blob");
1596                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1597                                 print " | " .
1598                                         $cgi->a({-href => href(action=>"blobdiff",
1599                                                                hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1600                                                                hash_base=>$hash, hash_parent_base=>$parent,
1601                                                                file_name=>$diff{'file'})},
1602                                                 "diff");
1603                         }
1604                         print " | " .
1605                                 $cgi->a({-href => href(action=>"history",
1606                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1607                                         "history");
1608                         print "</td>\n";
1609
1610                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1611                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1612                         my $nstatus = $status_name{$diff{'status'}};
1613                         my $mode_chng = "";
1614                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1615                                 # mode also for directories, so we cannot use $to_mode_str
1616                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1617                         }
1618                         print "<td>" .
1619                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1620                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1621                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1622                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1623                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1624                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1625                                       -class => "list"}, esc_html($diff{'from_file'})) .
1626                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1627                               "<td class=\"link\">" .
1628                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1629                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'})},
1630                                       "blob");
1631                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1632                                 print " | " .
1633                                         $cgi->a({-href => href(action=>"blobdiff",
1634                                                                hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1635                                                                hash_base=>$hash, hash_parent_base=>$parent,
1636                                                                file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1637                                                 "diff");
1638                         }
1639                         print "</td>\n";
1640
1641                 } # we should not encounter Unmerged (U) or Unknown (X) status
1642                 print "</tr>\n";
1643         }
1644         print "</table>\n";
1645 }
1646
1647 sub git_patchset_body {
1648         my ($fd, $difftree, $hash, $hash_parent) = @_;
1649
1650         my $patch_idx = 0;
1651         my $in_header = 0;
1652         my $patch_found = 0;
1653         my $diffinfo;
1654
1655         print "<div class=\"patchset\">\n";
1656
1657         LINE:
1658         while (my $patch_line @$fd>) {
1659                 chomp $patch_line;
1660
1661                 if ($patch_line =~ m/^diff /) { # "git diff" header
1662                         # beginning of patch (in patchset)
1663                         if ($patch_found) {
1664                                 # close previous patch
1665                                 print "</div>\n"; # class="patch"
1666                         } else {
1667                                 # first patch in patchset
1668                                 $patch_found = 1;
1669                         }
1670                         print "<div class=\"patch\">\n";
1671
1672                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1673                                 $diffinfo = $difftree->[$patch_idx];
1674                         } else {
1675                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1676                         }
1677                         $patch_idx++;
1678
1679                         # for now, no extended header, hence we skip empty patches
1680                         # companion to  next LINE if $in_header;
1681                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1682                                 $in_header = 1;
1683                                 next LINE;
1684                         }
1685
1686                         if ($diffinfo->{'status'} eq "A") { # added
1687                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1688                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1689                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1690                                               $diffinfo->{'to_id'}) . "(new)" .
1691                                       "</div>\n"; # class="diff_info"
1692
1693                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1694                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1695                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1696                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1697                                               $diffinfo->{'from_id'}) . "(deleted)" .
1698                                       "</div>\n"; # class="diff_info"
1699
1700                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1701                                  $diffinfo->{'status'} eq "C" || # copied
1702                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1703                                 print "<div class=\"diff_info\">" .
1704                                       file_type($diffinfo->{'from_mode'}) . ":" .
1705                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1706                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1707                                               $diffinfo->{'from_id'}) .
1708                                       " -> " .
1709                                       file_type($diffinfo->{'to_mode'}) . ":" .
1710                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1711                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1712                                               $diffinfo->{'to_id'});
1713                                 print "</div>\n"; # class="diff_info"
1714
1715                         } else { # modified, mode changed, ...
1716                                 print "<div class=\"diff_info\">" .
1717                                       file_type($diffinfo->{'from_mode'}) . ":" .
1718                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1719                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1720                                               $diffinfo->{'from_id'}) .
1721                                       " -> " .
1722                                       file_type($diffinfo->{'to_mode'}) . ":" .
1723                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1724                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1725                                               $diffinfo->{'to_id'});
1726                                 print "</div>\n"; # class="diff_info"
1727                         }
1728
1729                         #print "<div class=\"diff extended_header\">\n";
1730                         $in_header = 1;
1731                         next LINE;
1732                 } # start of patch in patchset
1733
1734
1735                 if ($in_header && $patch_line =~ m/^---/) {
1736                         #print "</div>\n"; # class="diff extended_header"
1737                         $in_header = 0;
1738
1739                         my $file = $diffinfo->{'from_file'};
1740                         $file  ||= $diffinfo->{'file'};
1741                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1742                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1743                                         -class => "list"}, esc_html($file));
1744                         $patch_line =~ s|a/.*$|a/$file|g;
1745                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1746
1747                         $patch_line = <$fd>;
1748                         chomp $patch_line;
1749
1750                         #$patch_line =~ m/^+++/;
1751                         $file    = $diffinfo->{'to_file'};
1752                         $file  ||= $diffinfo->{'file'};
1753                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1754                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1755                                         -class => "list"}, esc_html($file));
1756                         $patch_line =~ s|b/.*|b/$file|g;
1757                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1758
1759                         next LINE;
1760                 }
1761                 next LINE if $in_header;
1762
1763                 print format_diff_line($patch_line);
1764         }
1765         print "</div>\n" if $patch_found; # class="patch"
1766
1767         print "</div>\n"; # class="patchset"
1768 }
1769
1770 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1771
1772 sub git_shortlog_body {
1773         # uses global variable $project
1774         my ($revlist, $from, $to, $refs, $extra) = @_;
1775
1776         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
1777         my $have_snapshot = (defined $ctype && defined $suffix);
1778
1779         $from = 0 unless defined $from;
1780         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1781
1782         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1783         my $alternate = 0;
1784         for (my $i = $from; $i <= $to; $i++) {
1785                 my $commit = $revlist->[$i];
1786                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1787                 my $ref = format_ref_marker($refs, $commit);
1788                 my %co = parse_commit($commit);
1789                 if ($alternate) {
1790                         print "<tr class=\"dark\">\n";
1791                 } else {
1792                         print "<tr class=\"light\">\n";
1793                 }
1794                 $alternate ^= 1;
1795                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1796                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1797                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1798                       "<td>";
1799                 print format_subject_html($co{'title'}, $co{'title_short'},
1800                                           href(action=>"commit", hash=>$commit), $ref);
1801                 print "</td>\n" .
1802                       "<td class=\"link\">" .
1803                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1804                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
1805                 if ($have_snapshot) {
1806                         print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
1807                 }
1808                 print "</td>\n" .
1809                       "</tr>\n";
1810         }
1811         if (defined $extra) {
1812                 print "<tr>\n" .
1813                       "<td colspan=\"4\">$extra</td>\n" .
1814                       "</tr>\n";
1815         }
1816         print "</table>\n";
1817 }
1818
1819 sub git_history_body {
1820         # Warning: assumes constant type (blob or tree) during history
1821         my ($fd, $refs, $hash_base, $ftype, $extra) = @_;
1822
1823         print "<table class=\"history\" cellspacing=\"0\">\n";
1824         my $alternate = 0;
1825         while (my $line = <$fd>) {
1826                 if ($line !~ m/^([0-9a-fA-F]{40})/) {
1827                         next;
1828                 }
1829
1830                 my $commit = $1;
1831                 my %co = parse_commit($commit);
1832                 if (!%co) {
1833                         next;
1834                 }
1835
1836                 my $ref = format_ref_marker($refs, $commit);
1837
1838                 if ($alternate) {
1839                         print "<tr class=\"dark\">\n";
1840                 } else {
1841                         print "<tr class=\"light\">\n";
1842                 }
1843                 $alternate ^= 1;
1844                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1845                       # shortlog uses      chop_str($co{'author_name'}, 10)
1846                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
1847                       "<td>";
1848                 # originally git_history used chop_str($co{'title'}, 50)
1849                 print format_subject_html($co{'title'}, $co{'title_short'},
1850                                           href(action=>"commit", hash=>$commit), $ref);
1851                 print "</td>\n" .
1852                       "<td class=\"link\">" .
1853                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1854                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
1855                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
1856
1857                 if ($ftype eq 'blob') {
1858                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
1859                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
1860                         if (defined $blob_current && defined $blob_parent &&
1861                                         $blob_current ne $blob_parent) {
1862                                 print " | " .
1863                                         $cgi->a({-href => href(action=>"blobdiff",
1864                                                                hash=>$blob_current, hash_parent=>$blob_parent,
1865                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
1866                                                                file_name=>$file_name)},
1867                                                 "diff to current");
1868                         }
1869                 }
1870                 print "</td>\n" .
1871                       "</tr>\n";
1872         }
1873         if (defined $extra) {
1874                 print "<tr>\n" .
1875                       "<td colspan=\"4\">$extra</td>\n" .
1876                       "</tr>\n";
1877         }
1878         print "</table>\n";
1879 }
1880
1881 sub git_tags_body {
1882         # uses global variable $project
1883         my ($taglist, $from, $to, $extra) = @_;
1884         $from = 0 unless defined $from;
1885         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1886
1887         print "<table class=\"tags\" cellspacing=\"0\">\n";
1888         my $alternate = 0;
1889         for (my $i = $from; $i <= $to; $i++) {
1890                 my $entry = $taglist->[$i];
1891                 my %tag = %$entry;
1892                 my $comment_lines = $tag{'comment'};
1893                 my $comment = shift @$comment_lines;
1894                 my $comment_short;
1895                 if (defined $comment) {
1896                         $comment_short = chop_str($comment, 30, 5);
1897                 }
1898                 if ($alternate) {
1899                         print "<tr class=\"dark\">\n";
1900                 } else {
1901                         print "<tr class=\"light\">\n";
1902                 }
1903                 $alternate ^= 1;
1904                 print "<td><i>$tag{'age'}</i></td>\n" .
1905                       "<td>" .
1906                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
1907                                -class => "list name"}, esc_html($tag{'name'})) .
1908                       "</td>\n" .
1909                       "<td>";
1910                 if (defined $comment) {
1911                         print format_subject_html($comment, $comment_short,
1912                                                   href(action=>"tag", hash=>$tag{'id'}));
1913                 }
1914                 print "</td>\n" .
1915                       "<td class=\"selflink\">";
1916                 if ($tag{'type'} eq "tag") {
1917                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
1918                 } else {
1919                         print "&nbsp;";
1920                 }
1921                 print "</td>\n" .
1922                       "<td class=\"link\">" . " | " .
1923                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
1924                 if ($tag{'reftype'} eq "commit") {
1925                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
1926                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
1927                 } elsif ($tag{'reftype'} eq "blob") {
1928                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
1929                 }
1930                 print "</td>\n" .
1931                       "</tr>";
1932         }
1933         if (defined $extra) {
1934                 print "<tr>\n" .
1935                       "<td colspan=\"5\">$extra</td>\n" .
1936                       "</tr>\n";
1937         }
1938         print "</table>\n";
1939 }
1940
1941 sub git_heads_body {
1942         # uses global variable $project
1943         my ($taglist, $head, $from, $to, $extra) = @_;
1944         $from = 0 unless defined $from;
1945         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1946
1947         print "<table class=\"heads\" cellspacing=\"0\">\n";
1948         my $alternate = 0;
1949         for (my $i = $from; $i <= $to; $i++) {
1950                 my $entry = $taglist->[$i];
1951                 my %tag = %$entry;
1952                 my $curr = $tag{'id'} eq $head;
1953                 if ($alternate) {
1954                         print "<tr class=\"dark\">\n";
1955                 } else {
1956                         print "<tr class=\"light\">\n";
1957                 }
1958                 $alternate ^= 1;
1959                 print "<td><i>$tag{'age'}</i></td>\n" .
1960                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1961                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
1962                                -class => "list name"},esc_html($tag{'name'})) .
1963                       "</td>\n" .
1964                       "<td class=\"link\">" .
1965                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
1966                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") .
1967                       "</td>\n" .
1968                       "</tr>";
1969         }
1970         if (defined $extra) {
1971                 print "<tr>\n" .
1972                       "<td colspan=\"3\">$extra</td>\n" .
1973                       "</tr>\n";
1974         }
1975         print "</table>\n";
1976 }
1977
1978 ## ======================================================================
1979 ## ======================================================================
1980 ## actions
1981
1982 sub git_project_list {
1983         my $order = $cgi->param('o');
1984         if (defined $order && $order !~ m/project|descr|owner|age/) {
1985                 die_error(undef, "Unknown order parameter");
1986         }
1987
1988         my @list = git_get_projects_list();
1989         my @projects;
1990         if (!@list) {
1991                 die_error(undef, "No projects found");
1992         }
1993         foreach my $pr (@list) {
1994                 my $head = git_get_head_hash($pr->{'path'});
1995                 if (!defined $head) {
1996                         next;
1997                 }
1998                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
1999                 my %co = parse_commit($head);
2000                 if (!%co) {
2001                         next;
2002                 }
2003                 $pr->{'commit'} = \%co;
2004                 if (!defined $pr->{'descr'}) {
2005                         my $descr = git_get_project_description($pr->{'path'}) || "";
2006                         $pr->{'descr'} = chop_str($descr, 25, 5);
2007                 }
2008                 if (!defined $pr->{'owner'}) {
2009                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2010                 }
2011                 push @projects, $pr;
2012         }
2013
2014         git_header_html();
2015         if (-f $home_text) {
2016                 print "<div class=\"index_include\">\n";
2017                 open (my $fd, $home_text);
2018                 print <$fd>;
2019                 close $fd;
2020                 print "</div>\n";
2021         }
2022         print "<table class=\"project_list\">\n" .
2023               "<tr>\n";
2024         $order ||= "project";
2025         if ($order eq "project") {
2026                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2027                 print "<th>Project</th>\n";
2028         } else {
2029                 print "<th>" .
2030                       $cgi->a({-href => "$my_uri?" . esc_param("o=project"),
2031                                -class => "header"}, "Project") .
2032                       "</th>\n";
2033         }
2034         if ($order eq "descr") {
2035                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2036                 print "<th>Description</th>\n";
2037         } else {
2038                 print "<th>" .
2039                       $cgi->a({-href => "$my_uri?" . esc_param("o=descr"),
2040                                -class => "header"}, "Description") .
2041                       "</th>\n";
2042         }
2043         if ($order eq "owner") {
2044                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2045                 print "<th>Owner</th>\n";
2046         } else {
2047                 print "<th>" .
2048                       $cgi->a({-href => "$my_uri?" . esc_param("o=owner"),
2049                                -class => "header"}, "Owner") .
2050                       "</th>\n";
2051         }
2052         if ($order eq "age") {
2053                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2054                 print "<th>Last Change</th>\n";
2055         } else {
2056                 print "<th>" .
2057                       $cgi->a({-href => "$my_uri?" . esc_param("o=age"),
2058                                -class => "header"}, "Last Change") .
2059                       "</th>\n";
2060         }
2061         print "<th></th>\n" .
2062               "</tr>\n";
2063         my $alternate = 0;
2064         foreach my $pr (@projects) {
2065                 if ($alternate) {
2066                         print "<tr class=\"dark\">\n";
2067                 } else {
2068                         print "<tr class=\"light\">\n";
2069                 }
2070                 $alternate ^= 1;
2071                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2072                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2073                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2074                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2075                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2076                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2077                       "<td class=\"link\">" .
2078                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2079                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2080                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") .
2081                       "</td>\n" .
2082                       "</tr>\n";
2083         }
2084         print "</table>\n";
2085         git_footer_html();
2086 }
2087
2088 sub git_summary {
2089         my $descr = git_get_project_description($project) || "none";
2090         my $head = git_get_head_hash($project);
2091         my %co = parse_commit($head);
2092         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2093
2094         my $owner = git_get_project_owner($project);
2095
2096         my $refs = git_get_references();
2097         git_header_html();
2098         git_print_page_nav('summary','', $head);
2099
2100         print "<div class=\"title\">&nbsp;</div>\n";
2101         print "<table cellspacing=\"0\">\n" .
2102               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2103               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2104               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2105         # use per project git URL list in $projectroot/$project/cloneurl
2106         # or make project git URL from git base URL and project name
2107         my $url_tag = "URL";
2108         my @url_list = git_get_project_url_list($project);
2109         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2110         foreach my $git_url (@url_list) {
2111                 next unless $git_url;
2112                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2113                 $url_tag = "";
2114         }
2115         print "</table>\n";
2116
2117         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_get_head_hash($project)
2118                 or die_error(undef, "Open git-rev-list failed");
2119         my @revlist = map { chomp; $_ } <$fd>;
2120         close $fd;
2121         git_print_header_div('shortlog');
2122         git_shortlog_body(\@revlist, 0, 15, $refs,
2123                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2124
2125         my $taglist = git_get_refs_list("refs/tags");
2126         if (defined @$taglist) {
2127                 git_print_header_div('tags');
2128                 git_tags_body($taglist, 0, 15,
2129                               $cgi->a({-href => href(action=>"tags")}, "..."));
2130         }
2131
2132         my $headlist = git_get_refs_list("refs/heads");
2133         if (defined @$headlist) {
2134                 git_print_header_div('heads');
2135                 git_heads_body($headlist, $head, 0, 15,
2136                                $cgi->a({-href => href(action=>"heads")}, "..."));
2137         }
2138
2139         git_footer_html();
2140 }
2141
2142 sub git_tag {
2143         my $head = git_get_head_hash($project);
2144         git_header_html();
2145         git_print_page_nav('','', $head,undef,$head);
2146         my %tag = parse_tag($hash);
2147         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2148         print "<div class=\"title_text\">\n" .
2149               "<table cellspacing=\"0\">\n" .
2150               "<tr>\n" .
2151               "<td>object</td>\n" .
2152               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2153                                $tag{'object'}) . "</td>\n" .
2154               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2155                                               $tag{'type'}) . "</td>\n" .
2156               "</tr>\n";
2157         if (defined($tag{'author'})) {
2158                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2159                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2160                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2161                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2162                         "</td></tr>\n";
2163         }
2164         print "</table>\n\n" .
2165               "</div>\n";
2166         print "<div class=\"page_body\">";
2167         my $comment = $tag{'comment'};
2168         foreach my $line (@$comment) {
2169                 print esc_html($line) . "<br/>\n";
2170         }
2171         print "</div>\n";
2172         git_footer_html();
2173 }
2174
2175 sub git_blame2 {
2176         my $fd;
2177         my $ftype;
2178
2179         if (!gitweb_check_feature('blame')) {
2180                 die_error('403 Permission denied', "Permission denied");
2181         }
2182         die_error('404 Not Found', "File name not defined") if (!$file_name);
2183         $hash_base ||= git_get_head_hash($project);
2184         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2185         my %co = parse_commit($hash_base)
2186                 or die_error(undef, "Reading commit failed");
2187         if (!defined $hash) {
2188                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2189                         or die_error(undef, "Error looking up file");
2190         }
2191         $ftype = git_get_type($hash);
2192         if ($ftype !~ "blob") {
2193                 die_error("400 Bad Request", "Object is not a blob");
2194         }
2195         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
2196                 or die_error(undef, "Open git-blame failed");
2197         git_header_html();
2198         my $formats_nav =
2199                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2200                         "blob") .
2201                 " | " .
2202                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2203                         "head");
2204         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2205         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2206         git_print_page_path($file_name, $ftype, $hash_base);
2207         my @rev_color = (qw(light2 dark2));
2208         my $num_colors = scalar(@rev_color);
2209         my $current_color = 0;
2210         my $last_rev;
2211         print <<HTML;
2212 <div class="page_body">
2213 <table class="blame">
2214 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2215 HTML
2216         while (<$fd>) {
2217                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2218                 my $full_rev = $1;
2219                 my $rev = substr($full_rev, 0, 8);
2220                 my $lineno = $2;
2221                 my $data = $3;
2222
2223                 if (!defined $last_rev) {
2224                         $last_rev = $full_rev;
2225                 } elsif ($last_rev ne $full_rev) {
2226                         $last_rev = $full_rev;
2227                         $current_color = ++$current_color % $num_colors;
2228                 }
2229                 print "<tr class=\"$rev_color[$current_color]\">\n";
2230                 print "<td class=\"sha1\">" .
2231                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2232                                 esc_html($rev)) . "</td>\n";
2233                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2234                       esc_html($lineno) . "</a></td>\n";
2235                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2236                 print "</tr>\n";
2237         }
2238         print "</table>\n";
2239         print "</div>";
2240         close $fd
2241                 or print "Reading blob failed\n";
2242         git_footer_html();
2243 }
2244
2245 sub git_blame {
2246         my $fd;
2247
2248         if (!gitweb_check_feature('blame')) {
2249                 die_error('403 Permission denied', "Permission denied");
2250         }
2251         die_error('404 Not Found', "File name not defined") if (!$file_name);
2252         $hash_base ||= git_get_head_hash($project);
2253         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2254         my %co = parse_commit($hash_base)
2255                 or die_error(undef, "Reading commit failed");
2256         if (!defined $hash) {
2257                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2258                         or die_error(undef, "Error lookup file");
2259         }
2260         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2261                 or die_error(undef, "Open git-annotate failed");
2262         git_header_html();
2263         my $formats_nav =
2264                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2265                         "blob") .
2266                 " | " .
2267                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2268                         "head");
2269         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2270         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2271         git_print_page_path($file_name, 'blob', $hash_base);
2272         print "<div class=\"page_body\">\n";
2273         print <<HTML;
2274 <table class="blame">
2275   <tr>
2276     <th>Commit</th>
2277     <th>Age</th>
2278     <th>Author</th>
2279     <th>Line</th>
2280     <th>Data</th>
2281   </tr>
2282 HTML
2283         my @line_class = (qw(light dark));
2284         my $line_class_len = scalar (@line_class);
2285         my $line_class_num = $#line_class;
2286         while (my $line = <$fd>) {
2287                 my $long_rev;
2288                 my $short_rev;
2289                 my $author;
2290                 my $time;
2291                 my $lineno;
2292                 my $data;
2293                 my $age;
2294                 my $age_str;
2295                 my $age_class;
2296
2297                 chomp $line;
2298                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2299
2300                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
2301                         $long_rev = $1;
2302                         $author   = $2;
2303                         $time     = $3;
2304                         $lineno   = $4;
2305                         $data     = $5;
2306                 } else {
2307                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2308                         next;
2309                 }
2310                 $short_rev  = substr ($long_rev, 0, 8);
2311                 $age        = time () - $time;
2312                 $age_str    = age_string ($age);
2313                 $age_str    =~ s/ /&nbsp;/g;
2314                 $age_class  = age_class($age);
2315                 $author     = esc_html ($author);
2316                 $author     =~ s/ /&nbsp;/g;
2317
2318                 $data = untabify($data);
2319                 $data = esc_html ($data);
2320
2321                 print <<HTML;
2322   <tr class="$line_class[$line_class_num]">
2323     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2324     <td class="$age_class">$age_str</td>
2325     <td>$author</td>
2326     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2327     <td class="pre">$data</td>
2328   </tr>
2329 HTML
2330         } # while (my $line = <$fd>)
2331         print "</table>\n\n";
2332         close $fd
2333                 or print "Reading blob failed.\n";
2334         print "</div>";
2335         git_footer_html();
2336 }
2337
2338 sub git_tags {
2339         my $head = git_get_head_hash($project);
2340         git_header_html();
2341         git_print_page_nav('','', $head,undef,$head);
2342         git_print_header_div('summary', $project);
2343
2344         my $taglist = git_get_refs_list("refs/tags");
2345         if (defined @$taglist) {
2346                 git_tags_body($taglist);
2347         }
2348         git_footer_html();
2349 }
2350
2351 sub git_heads {
2352         my $head = git_get_head_hash($project);
2353         git_header_html();
2354         git_print_page_nav('','', $head,undef,$head);
2355         git_print_header_div('summary', $project);
2356
2357         my $taglist = git_get_refs_list("refs/heads");
2358         if (defined @$taglist) {
2359                 git_heads_body($taglist, $head);
2360         }
2361         git_footer_html();
2362 }
2363
2364 sub git_blob_plain {
2365         if (!defined $hash) {
2366                 if (defined $file_name) {
2367                         my $base = $hash_base || git_get_head_hash($project);
2368                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2369                                 or die_error(undef, "Error lookup file");
2370                 } else {
2371                         die_error(undef, "No file name defined");
2372                 }
2373         }
2374         my $type = shift;
2375         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
2376                 or die_error(undef, "Couldn't cat $file_name, $hash");
2377
2378         $type ||= blob_mimetype($fd, $file_name);
2379
2380         # save as filename, even when no $file_name is given
2381         my $save_as = "$hash";
2382         if (defined $file_name) {
2383                 $save_as = $file_name;
2384         } elsif ($type =~ m/^text\//) {
2385                 $save_as .= '.txt';
2386         }
2387
2388         print $cgi->header(-type => "$type",
2389                            -content_disposition => "inline; filename=\"$save_as\"");
2390         undef $/;
2391         binmode STDOUT, ':raw';
2392         print <$fd>;
2393         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2394         $/ = "\n";
2395         close $fd;
2396 }
2397
2398 sub git_blob {
2399         if (!defined $hash) {
2400                 if (defined $file_name) {
2401                         my $base = $hash_base || git_get_head_hash($project);
2402                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2403                                 or die_error(undef, "Error lookup file");
2404                 } else {
2405                         die_error(undef, "No file name defined");
2406                 }
2407         }
2408         my $have_blame = gitweb_check_feature('blame');
2409         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
2410                 or die_error(undef, "Couldn't cat $file_name, $hash");
2411         my $mimetype = blob_mimetype($fd, $file_name);
2412         if ($mimetype !~ m/^text\//) {
2413                 close $fd;
2414                 return git_blob_plain($mimetype);
2415         }
2416         git_header_html();
2417         my $formats_nav = '';
2418         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2419                 if (defined $file_name) {
2420                         if ($have_blame) {
2421                                 $formats_nav .=
2422                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2423                                                                hash=>$hash, file_name=>$file_name)},
2424                                                 "blame") .
2425                                         " | ";
2426                         }
2427                         $formats_nav .=
2428                                 $cgi->a({-href => href(action=>"blob_plain",
2429                                                        hash=>$hash, file_name=>$file_name)},
2430                                         "plain") .
2431                                 " | " .
2432                                 $cgi->a({-href => href(action=>"blob",
2433                                                        hash_base=>"HEAD", file_name=>$file_name)},
2434                                         "head");
2435                 } else {
2436                         $formats_nav .=
2437                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "plain");
2438                 }
2439                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2440                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2441         } else {
2442                 print "<div class=\"page_nav\">\n" .
2443                       "<br/><br/></div>\n" .
2444                       "<div class=\"title\">$hash</div>\n";
2445         }
2446         git_print_page_path($file_name, "blob", $hash_base);
2447         print "<div class=\"page_body\">\n";
2448         my $nr;
2449         while (my $line = <$fd>) {
2450                 chomp $line;
2451                 $nr++;
2452                 $line = untabify($line);
2453                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2454                        $nr, $nr, $nr, esc_html($line);
2455         }
2456         close $fd
2457                 or print "Reading blob failed.\n";
2458         print "</div>";
2459         git_footer_html();
2460 }
2461
2462 sub git_tree {
2463         if (!defined $hash) {
2464                 $hash = git_get_head_hash($project);
2465                 if (defined $file_name) {
2466                         my $base = $hash_base || $hash;
2467                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2468                 }
2469                 if (!defined $hash_base) {
2470                         $hash_base = $hash;
2471                 }
2472         }
2473         $/ = "\0";
2474         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
2475                 or die_error(undef, "Open git-ls-tree failed");
2476         my @entries = map { chomp; $_ } <$fd>;
2477         close $fd or die_error(undef, "Reading tree failed");
2478         $/ = "\n";
2479
2480         my $refs = git_get_references();
2481         my $ref = format_ref_marker($refs, $hash_base);
2482         git_header_html();
2483         my %base_key = ();
2484         my $base = "";
2485         my $have_blame = gitweb_check_feature('blame');
2486         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2487                 $base_key{hash_base} = $hash_base;
2488                 git_print_page_nav('tree','', $hash_base);
2489                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2490         } else {
2491                 print "<div class=\"page_nav\">\n";
2492                 print "<br/><br/></div>\n";
2493                 print "<div class=\"title\">$hash</div>\n";
2494         }
2495         if (defined $file_name) {
2496                 $base = esc_html("$file_name/");
2497         }
2498         git_print_page_path($file_name, 'tree', $hash_base);
2499         print "<div class=\"page_body\">\n";
2500         print "<table cellspacing=\"0\">\n";
2501         my $alternate = 0;
2502         foreach my $line (@entries) {
2503                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
2504                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
2505                 my $t_mode = $1;
2506                 my $t_type = $2;
2507                 my $t_hash = $3;
2508                 my $t_name = validate_input($4);
2509                 if ($alternate) {
2510                         print "<tr class=\"dark\">\n";
2511                 } else {
2512                         print "<tr class=\"light\">\n";
2513                 }
2514                 $alternate ^= 1;
2515                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
2516                 if ($t_type eq "blob") {
2517                         print "<td class=\"list\">" .
2518                               $cgi->a({-href => href(action=>"blob", hash=>$t_hash, file_name=>"$base$t_name", %base_key),
2519                                       -class => "list"}, esc_html($t_name)) .
2520                               "</td>\n" .
2521                               "<td class=\"link\">" .
2522                               $cgi->a({-href => href(action=>"blob", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2523                                       "blob");
2524                         if ($have_blame) {
2525                                 print " | " .
2526                                         $cgi->a({-href => href(action=>"blame", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2527                                                 "blame");
2528                         }
2529                         print " | " .
2530                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2531                                                      hash=>$t_hash, file_name=>"$base$t_name")},
2532                                       "history") .
2533                               " | " .
2534                               $cgi->a({-href => href(action=>"blob_plain",
2535                                                      hash=>$t_hash, file_name=>"$base$t_name")},
2536                                       "raw") .
2537                               "</td>\n";
2538                 } elsif ($t_type eq "tree") {
2539                         print "<td class=\"list\">" .
2540                               $cgi->a({-href => href(action=>"tree", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2541                                       esc_html($t_name)) .
2542                               "</td>\n" .
2543                               "<td class=\"link\">" .
2544                               $cgi->a({-href => href(action=>"tree", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2545                                       "tree") .
2546                               " | " .
2547                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base, file_name=>"$base$t_name")},
2548                                       "history") .
2549                               "</td>\n";
2550                 }
2551                 print "</tr>\n";
2552         }
2553         print "</table>\n" .
2554               "</div>";
2555         git_footer_html();
2556 }
2557
2558 sub git_snapshot {
2559
2560         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2561         my $have_snapshot = (defined $ctype && defined $suffix);
2562         if (!$have_snapshot) {
2563                 die_error('403 Permission denied', "Permission denied");
2564         }
2565
2566         if (!defined $hash) {
2567                 $hash = git_get_head_hash($project);
2568         }
2569
2570         my $filename = basename($project) . "-$hash.tar.$suffix";
2571
2572         print $cgi->header(-type => 'application/x-tar',
2573                            -content_encoding => $ctype,
2574                            -content_disposition => "inline; filename=\"$filename\"",
2575                            -status => '200 OK');
2576
2577         open my $fd, "-|", "$GIT tar-tree $hash \'$project\' | $command" or
2578                 die_error(undef, "Execute git-tar-tree failed.");
2579         binmode STDOUT, ':raw';
2580         print <$fd>;
2581         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2582         close $fd;
2583
2584 }
2585
2586 sub git_log {
2587         my $head = git_get_head_hash($project);
2588         if (!defined $hash) {
2589                 $hash = $head;
2590         }
2591         if (!defined $page) {
2592                 $page = 0;
2593         }
2594         my $refs = git_get_references();
2595
2596         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2597         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2598                 or die_error(undef, "Open git-rev-list failed");
2599         my @revlist = map { chomp; $_ } <$fd>;
2600         close $fd;
2601
2602         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2603
2604         git_header_html();
2605         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2606
2607         if (!@revlist) {
2608                 my %co = parse_commit($hash);
2609
2610                 git_print_header_div('summary', $project);
2611                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2612         }
2613         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2614                 my $commit = $revlist[$i];
2615                 my $ref = format_ref_marker($refs, $commit);
2616                 my %co = parse_commit($commit);
2617                 next if !%co;
2618                 my %ad = parse_date($co{'author_epoch'});
2619                 git_print_header_div('commit',
2620                                "<span class=\"age\">$co{'age_string'}</span>" .
2621                                esc_html($co{'title'}) . $ref,
2622                                $commit);
2623                 print "<div class=\"title_text\">\n" .
2624                       "<div class=\"log_link\">\n" .
2625                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2626                       " | " .
2627                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2628                       "<br/>\n" .
2629                       "</div>\n" .
2630                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2631                       "</div>\n";
2632
2633                 print "<div class=\"log_body\">\n";
2634                 git_print_simplified_log($co{'comment'});
2635                 print "</div>\n";
2636         }
2637         git_footer_html();
2638 }
2639
2640 sub git_commit {
2641         my %co = parse_commit($hash);
2642         if (!%co) {
2643                 die_error(undef, "Unknown commit object");
2644         }
2645         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2646         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2647
2648         my $parent = $co{'parent'};
2649         if (!defined $parent) {
2650                 $parent = "--root";
2651         }
2652         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
2653                 or die_error(undef, "Open git-diff-tree failed");
2654         my @difftree = map { chomp; $_ } <$fd>;
2655         close $fd or die_error(undef, "Reading git-diff-tree failed");
2656
2657         # non-textual hash id's can be cached
2658         my $expires;
2659         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2660                 $expires = "+1d";
2661         }
2662         my $refs = git_get_references();
2663         my $ref = format_ref_marker($refs, $co{'id'});
2664
2665         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2666         my $have_snapshot = (defined $ctype && defined $suffix);
2667
2668         my $formats_nav = '';
2669         if (defined $file_name && defined $co{'parent'}) {
2670                 my $parent = $co{'parent'};
2671                 $formats_nav .=
2672                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2673                                 "blame");
2674         }
2675         git_header_html(undef, $expires);
2676         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2677                            $hash, $co{'tree'}, $hash,
2678                            $formats_nav);
2679
2680         if (defined $co{'parent'}) {
2681                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2682         } else {
2683                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2684         }
2685         print "<div class=\"title_text\">\n" .
2686               "<table cellspacing=\"0\">\n";
2687         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2688               "<tr>" .
2689               "<td></td><td> $ad{'rfc2822'}";
2690         if ($ad{'hour_local'} < 6) {
2691                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2692                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2693         } else {
2694                 printf(" (%02d:%02d %s)",
2695                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2696         }
2697         print "</td>" .
2698               "</tr>\n";
2699         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2700         print "<tr><td></td><td> $cd{'rfc2822'}" .
2701               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2702               "</td></tr>\n";
2703         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2704         print "<tr>" .
2705               "<td>tree</td>" .
2706               "<td class=\"sha1\">" .
2707               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2708                        class => "list"}, $co{'tree'}) .
2709               "</td>" .
2710               "<td class=\"link\">" .
2711               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2712                       "tree");
2713         if ($have_snapshot) {
2714                 print " | " .
2715                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2716         }
2717         print "</td>" .
2718               "</tr>\n";
2719         my $parents = $co{'parents'};
2720         foreach my $par (@$parents) {
2721                 print "<tr>" .
2722                       "<td>parent</td>" .
2723                       "<td class=\"sha1\">" .
2724                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2725                                class => "list"}, $par) .
2726                       "</td>" .
2727                       "<td class=\"link\">" .
2728                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2729                       " | " .
2730                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "commitdiff") .
2731                       "</td>" .
2732                       "</tr>\n";
2733         }
2734         print "</table>".
2735               "</div>\n";
2736
2737         print "<div class=\"page_body\">\n";
2738         git_print_log($co{'comment'});
2739         print "</div>\n";
2740
2741         git_difftree_body(\@difftree, $hash, $parent);
2742
2743         git_footer_html();
2744 }
2745
2746 sub git_blobdiff {
2747         my $format = shift || 'html';
2748
2749         my $fd;
2750         my @difftree;
2751         my %diffinfo;
2752         my $expires;
2753
2754         # preparing $fd and %diffinfo for git_patchset_body
2755         # new style URI
2756         if (defined $hash_base && defined $hash_parent_base) {
2757                 if (defined $file_name) {
2758                         # read raw output
2759                         open $fd, "-|", $GIT, "diff-tree", '-r', '-M', '-C', $hash_parent_base, $hash_base,
2760                                 "--", $file_name
2761                                 or die_error(undef, "Open git-diff-tree failed");
2762                         @difftree = map { chomp; $_ } <$fd>;
2763                         close $fd
2764                                 or die_error(undef, "Reading git-diff-tree failed");
2765                         @difftree
2766                                 or die_error('404 Not Found', "Blob diff not found");
2767
2768                 } elsif (defined $hash) { # try to find filename from $hash
2769                         if ($hash !~ /[0-9a-fA-F]{40}/) {
2770                                 $hash = git_to_hash($hash);
2771                         }
2772
2773                         # read filtered raw output
2774                         open $fd, "-|", $GIT, "diff-tree", '-r', '-M', '-C', $hash_parent_base, $hash_base
2775                                 or die_error(undef, "Open git-diff-tree failed");
2776                         @difftree =
2777                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
2778                                 # $hash == to_id
2779                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
2780                                 map { chomp; $_ } <$fd>;
2781                         close $fd
2782                                 or die_error(undef, "Reading git-diff-tree failed");
2783                         @difftree
2784                                 or die_error('404 Not Found', "Blob diff not found");
2785
2786                 } else {
2787                         die_error('404 Not Found', "Missing one of the blob diff parameters");
2788                 }
2789
2790                 if (@difftree > 1) {
2791                         die_error('404 Not Found', "Ambiguous blob diff specification");
2792                 }
2793
2794                 %diffinfo = parse_difftree_raw_line($difftree[0]);
2795                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
2796                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
2797
2798                 $hash_parent ||= $diffinfo{'from_id'};
2799                 $hash        ||= $diffinfo{'to_id'};
2800
2801                 # non-textual hash id's can be cached
2802                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
2803                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
2804                         $expires = '+1d';
2805                 }
2806
2807                 # open patch output
2808                 open $fd, "-|", $GIT, "diff-tree", '-r', '-p', '-M', '-C', $hash_parent_base, $hash_base,
2809                         "--", $file_name
2810                         or die_error(undef, "Open git-diff-tree failed");
2811         }
2812
2813         # old/legacy style URI
2814         if (!%diffinfo && # if new style URI failed
2815             defined $hash && defined $hash_parent) {
2816                 # fake git-diff-tree raw output
2817                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
2818                 $diffinfo{'from_id'} = $hash_parent;
2819                 $diffinfo{'to_id'}   = $hash;
2820                 if (defined $file_name) {
2821                         if (defined $file_parent) {
2822                                 $diffinfo{'status'} = '2';
2823                                 $diffinfo{'from_file'} = $file_parent;
2824                                 $diffinfo{'to_file'}   = $file_name;
2825                         } else { # assume not renamed
2826                                 $diffinfo{'status'} = '1';
2827                                 $diffinfo{'from_file'} = $file_name;
2828                                 $diffinfo{'to_file'}   = $file_name;
2829                         }
2830                 } else { # no filename given
2831                         $diffinfo{'status'} = '2';
2832                         $diffinfo{'from_file'} = $hash_parent;
2833                         $diffinfo{'to_file'}   = $hash;
2834                 }
2835
2836                 # non-textual hash id's can be cached
2837                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
2838                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
2839                         $expires = '+1d';
2840                 }
2841
2842                 # open patch output
2843                 #open $fd, "-|", $GIT, "diff", '-p', $hash_parent, $hash
2844                 open $fd, "-|", $GIT, "diff", '-p', $hash, $hash_parent
2845                         or die_error(undef, "Open git-diff failed");
2846         } else  {
2847                 die_error('404 Not Found', "Missing one of the blob diff parameters")
2848                         unless %diffinfo;
2849         }
2850
2851         # header
2852         if ($format eq 'html') {
2853                 my $formats_nav =
2854                         $cgi->a({-href => href(action=>"blobdiff_plain",
2855                                                hash=>$hash, hash_parent=>$hash_parent,
2856                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
2857                                                file_name=>$file_name, file_parent=>$file_parent)},
2858                                 "plain");
2859                 git_header_html(undef, $expires);
2860                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2861                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2862                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2863                 } else {
2864                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
2865                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
2866                 }
2867                 if (defined $file_name) {
2868                         git_print_page_path($file_name, "blob", $hash_base);
2869                 } else {
2870                         print "<div class=\"page_path\"></div>\n";
2871                 }
2872
2873         } elsif ($format eq 'plain') {
2874                 print $cgi->header(
2875                         -type => 'text/plain',
2876                         -charset => 'utf-8',
2877                         -expires => $expires,
2878                         -content_disposition => qq(inline; filename="${file_name}.patch"));
2879
2880                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
2881
2882         } else {
2883                 die_error(undef, "Unknown blobdiff format");
2884         }
2885
2886         # patch
2887         if ($format eq 'html') {
2888                 print "<div class=\"page_body\">\n";
2889
2890                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
2891                 close $fd;
2892
2893                 print "</div>\n"; # class="page_body"
2894                 git_footer_html();
2895
2896         } else {
2897                 while (my $line = <$fd>) {
2898                         $line =~ s!a/($hash|$hash_parent)!a/$diffinfo{'from_file'}!g;
2899                         $line =~ s!b/($hash|$hash_parent)!b/$diffinfo{'to_file'}!g;
2900
2901                         print $line;
2902
2903                         last if $line =~ m!^\+\+\+!;
2904                 }
2905                 local $/ = undef;
2906                 print <$fd>;
2907                 close $fd;
2908         }
2909 }
2910
2911 sub git_blobdiff_plain {
2912         git_blobdiff('plain');
2913 }
2914
2915 sub git_commitdiff {
2916         my $format = shift || 'html';
2917         my %co = parse_commit($hash);
2918         if (!%co) {
2919                 die_error(undef, "Unknown commit object");
2920         }
2921         if (!defined $hash_parent) {
2922                 $hash_parent = $co{'parent'} || '--root';
2923         }
2924
2925         # read commitdiff
2926         my $fd;
2927         my @difftree;
2928         if ($format eq 'html') {
2929                 open $fd, "-|", $GIT, "diff-tree", '-r', '-M', '-C',
2930                         "--patch-with-raw", "--full-index", $hash_parent, $hash
2931                         or die_error(undef, "Open git-diff-tree failed");
2932
2933                 while (chomp(my $line = <$fd>)) {
2934                         # empty line ends raw part of diff-tree output
2935                         last unless $line;
2936                         push @difftree, $line;
2937                 }
2938
2939         } elsif ($format eq 'plain') {
2940                 open $fd, "-|", $GIT, "diff-tree", '-r', '-p', '-B', $hash_parent, $hash
2941                         or die_error(undef, "Open git-diff-tree failed");
2942
2943         } else {
2944                 die_error(undef, "Unknown commitdiff format");
2945         }
2946
2947         # non-textual hash id's can be cached
2948         my $expires;
2949         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2950                 $expires = "+1d";
2951         }
2952
2953         # write commit message
2954         if ($format eq 'html') {
2955                 my $refs = git_get_references();
2956                 my $ref = format_ref_marker($refs, $co{'id'});
2957                 my $formats_nav =
2958                         $cgi->a({-href => href(action=>"commitdiff_plain",
2959                                                hash=>$hash, hash_parent=>$hash_parent)},
2960                                 "plain");
2961
2962                 git_header_html(undef, $expires);
2963                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2964                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2965                 print "<div class=\"page_body\">\n";
2966                 print "<div class=\"log\">\n";
2967                 git_print_simplified_log($co{'comment'}, 1); # skip title
2968                 print "</div>\n"; # class="log"
2969
2970         } elsif ($format eq 'plain') {
2971                 my $refs = git_get_references("tags");
2972                 my $tagname = git_get_rev_name_tags($hash);
2973                 my $filename = basename($project) . "-$hash.patch";
2974
2975                 print $cgi->header(
2976                         -type => 'text/plain',
2977                         -charset => 'utf-8',
2978                         -expires => $expires,
2979                         -content_disposition => qq(inline; filename="$filename"));
2980                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2981                 print <<TEXT;
2982 From: $co{'author'}
2983 Date: $ad{'rfc2822'} ($ad{'tz_local'})
2984 Subject: $co{'title'}
2985 TEXT
2986                 print "X-Git-Tag: $tagname\n" if $tagname;
2987                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
2988
2989                 foreach my $line (@{$co{'comment'}}) {
2990                         print "$line\n";
2991                 }
2992                 print "---\n\n";
2993         }
2994
2995         # write patch
2996         if ($format eq 'html') {
2997                 #git_difftree_body(\@difftree, $hash, $hash_parent);
2998                 #print "<br/>\n";
2999
3000                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3001                 close $fd;
3002                 print "</div>\n"; # class="page_body"
3003                 git_footer_html();
3004
3005         } elsif ($format eq 'plain') {
3006                 local $/ = undef;
3007                 print <$fd>;
3008                 close $fd
3009                         or print "Reading git-diff-tree failed\n";
3010         }
3011 }
3012
3013 sub git_commitdiff_plain {
3014         git_commitdiff('plain');
3015 }
3016
3017 sub git_history {
3018         if (!defined $hash_base) {
3019                 $hash_base = git_get_head_hash($project);
3020         }
3021         my $ftype;
3022         my %co = parse_commit($hash_base);
3023         if (!%co) {
3024                 die_error(undef, "Unknown commit object");
3025         }
3026         my $refs = git_get_references();
3027         git_header_html();
3028         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base);
3029         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3030         if (!defined $hash && defined $file_name) {
3031                 $hash = git_get_hash_by_path($hash_base, $file_name);
3032         }
3033         if (defined $hash) {
3034                 $ftype = git_get_type($hash);
3035         }
3036         git_print_page_path($file_name, $ftype, $hash_base);
3037
3038         open my $fd, "-|",
3039                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
3040         git_history_body($fd, $refs, $hash_base, $ftype);
3041
3042         close $fd;
3043         git_footer_html();
3044 }
3045
3046 sub git_search {
3047         if (!defined $searchtext) {
3048                 die_error(undef, "Text field empty");
3049         }
3050         if (!defined $hash) {
3051                 $hash = git_get_head_hash($project);
3052         }
3053         my %co = parse_commit($hash);
3054         if (!%co) {
3055                 die_error(undef, "Unknown commit object");
3056         }
3057         # pickaxe may take all resources of your box and run for several minutes
3058         # with every query - so decide by yourself how public you make this feature :)
3059         my $commit_search = 1;
3060         my $author_search = 0;
3061         my $committer_search = 0;
3062         my $pickaxe_search = 0;
3063         if ($searchtext =~ s/^author\\://i) {
3064                 $author_search = 1;
3065         } elsif ($searchtext =~ s/^committer\\://i) {
3066                 $committer_search = 1;
3067         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3068                 $commit_search = 0;
3069                 $pickaxe_search = 1;
3070         }
3071         git_header_html();
3072         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3073         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3074
3075         print "<table cellspacing=\"0\">\n";
3076         my $alternate = 0;
3077         if ($commit_search) {
3078                 $/ = "\0";
3079                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
3080                 while (my $commit_text = <$fd>) {
3081                         if (!grep m/$searchtext/i, $commit_text) {
3082                                 next;
3083                         }
3084                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3085                                 next;
3086                         }
3087                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3088                                 next;
3089                         }
3090                         my @commit_lines = split "\n", $commit_text;
3091                         my %co = parse_commit(undef, \@commit_lines);
3092                         if (!%co) {
3093                                 next;
3094                         }
3095                         if ($alternate) {
3096                                 print "<tr class=\"dark\">\n";
3097                         } else {
3098                                 print "<tr class=\"light\">\n";
3099                         }
3100                         $alternate ^= 1;
3101                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3102                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3103                               "<td>" .
3104                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3105                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3106                         my $comment = $co{'comment'};
3107                         foreach my $line (@$comment) {
3108                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3109                                         my $lead = esc_html($1) || "";
3110                                         $lead = chop_str($lead, 30, 10);
3111                                         my $match = esc_html($2) || "";
3112                                         my $trail = esc_html($3) || "";
3113                                         $trail = chop_str($trail, 30, 10);
3114                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3115                                         print chop_str($text, 80, 5) . "<br/>\n";
3116                                 }
3117                         }
3118                         print "</td>\n" .
3119                               "<td class=\"link\">" .
3120                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3121                               " | " .
3122                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3123                         print "</td>\n" .
3124                               "</tr>\n";
3125                 }
3126                 close $fd;
3127         }
3128
3129         if ($pickaxe_search) {
3130                 $/ = "\n";
3131                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
3132                 undef %co;
3133                 my @files;
3134                 while (my $line = <$fd>) {
3135                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3136                                 my %set;
3137                                 $set{'file'} = $6;
3138                                 $set{'from_id'} = $3;
3139                                 $set{'to_id'} = $4;
3140                                 $set{'id'} = $set{'to_id'};
3141                                 if ($set{'id'} =~ m/0{40}/) {
3142                                         $set{'id'} = $set{'from_id'};
3143                                 }
3144                                 if ($set{'id'} =~ m/0{40}/) {
3145                                         next;
3146                                 }
3147                                 push @files, \%set;
3148                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3149                                 if (%co) {
3150                                         if ($alternate) {
3151                                                 print "<tr class=\"dark\">\n";
3152                                         } else {
3153                                                 print "<tr class=\"light\">\n";
3154                                         }
3155                                         $alternate ^= 1;
3156                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3157                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3158                                               "<td>" .
3159                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3160                                                       -class => "list subject"},
3161                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3162                                         while (my $setref = shift @files) {
3163                                                 my %set = %$setref;
3164                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3165                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3166                                                               -class => "list"},
3167                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3168                                                       "<br/>\n";
3169                                         }
3170                                         print "</td>\n" .
3171                                               "<td class=\"link\">" .
3172                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3173                                               " | " .
3174                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3175                                         print "</td>\n" .
3176                                               "</tr>\n";
3177                                 }
3178                                 %co = parse_commit($1);
3179                         }
3180                 }
3181                 close $fd;
3182         }
3183         print "</table>\n";
3184         git_footer_html();
3185 }
3186
3187 sub git_shortlog {
3188         my $head = git_get_head_hash($project);
3189         if (!defined $hash) {
3190                 $hash = $head;
3191         }
3192         if (!defined $page) {
3193                 $page = 0;
3194         }
3195         my $refs = git_get_references();
3196
3197         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3198         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
3199                 or die_error(undef, "Open git-rev-list failed");
3200         my @revlist = map { chomp; $_ } <$fd>;
3201         close $fd;
3202
3203         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3204         my $next_link = '';
3205         if ($#revlist >= (100 * ($page+1)-1)) {
3206                 $next_link =
3207                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3208                                  -title => "Alt-n"}, "next");
3209         }
3210
3211
3212         git_header_html();
3213         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3214         git_print_header_div('summary', $project);
3215
3216         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3217
3218         git_footer_html();
3219 }
3220
3221 ## ......................................................................
3222 ## feeds (RSS, OPML)
3223
3224 sub git_rss {
3225         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3226         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_get_head_hash($project)
3227                 or die_error(undef, "Open git-rev-list failed");
3228         my @revlist = map { chomp; $_ } <$fd>;
3229         close $fd or die_error(undef, "Reading git-rev-list failed");
3230         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3231         print <<XML;
3232 <?xml version="1.0" encoding="utf-8"?>
3233 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3234 <channel>
3235 <title>$project $my_uri $my_url</title>
3236 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3237 <description>$project log</description>
3238 <language>en</language>
3239 XML
3240
3241         for (my $i = 0; $i <= $#revlist; $i++) {
3242                 my $commit = $revlist[$i];
3243                 my %co = parse_commit($commit);
3244                 # we read 150, we always show 30 and the ones more recent than 48 hours
3245                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3246                         last;
3247                 }
3248                 my %cd = parse_date($co{'committer_epoch'});
3249                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
3250                 my @difftree = map { chomp; $_ } <$fd>;
3251                 close $fd or next;
3252                 print "<item>\n" .
3253                       "<title>" .
3254                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3255                       "</title>\n" .
3256                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3257                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3258                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3259                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3260                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3261                       "<content:encoded>" .
3262                       "<![CDATA[\n";
3263                 my $comment = $co{'comment'};
3264                 foreach my $line (@$comment) {
3265                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3266                         print "$line<br/>\n";
3267                 }
3268                 print "<br/>\n";
3269                 foreach my $line (@difftree) {
3270                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3271                                 next;
3272                         }
3273                         my $file = validate_input(unquote($7));
3274                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3275                         print "$file<br/>\n";
3276                 }
3277                 print "]]>\n" .
3278                       "</content:encoded>\n" .
3279                       "</item>\n";
3280         }
3281         print "</channel></rss>";
3282 }
3283
3284 sub git_opml {
3285         my @list = git_get_projects_list();
3286
3287         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3288         print <<XML;
3289 <?xml version="1.0" encoding="utf-8"?>
3290 <opml version="1.0">
3291 <head>
3292   <title>$site_name Git OPML Export</title>
3293 </head>
3294 <body>
3295 <outline text="git RSS feeds">
3296 XML
3297
3298         foreach my $pr (@list) {
3299                 my %proj = %$pr;
3300                 my $head = git_get_head_hash($proj{'path'});
3301                 if (!defined $head) {
3302                         next;
3303                 }
3304                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
3305                 my %co = parse_commit($head);
3306                 if (!%co) {
3307                         next;
3308                 }
3309
3310                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3311                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3312                 my $html = "$my_url?p=$proj{'path'};a=summary";
3313                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3314         }
3315         print <<XML;
3316 </outline>
3317 </body>
3318 </opml>
3319 XML
3320 }