gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  43
  44 # html text to include at home page
  45 our $home_text = "++GITWEB_HOMETEXT++";
  46
  47 # URI of default stylesheet
  48 our $stylesheet = "++GITWEB_CSS++";
  49 # URI of GIT logo
  50 our $logo = "++GITWEB_LOGO++";
  51 # URI of GIT favicon, assumed to be image/png type
  52 our $favicon = "++GITWEB_FAVICON++";
  53
  54 # source of projects list
  55 our $projects_list = "++GITWEB_LIST++";
  56
  57 # list of git base URLs used for URL to where fetch project from,
  58 # i.e. full URL is "$git_base_url/$project"
  59 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  60
  61 # default blob_plain mimetype and default charset for text/plain blob
  62 our $default_blob_plain_mimetype = 'text/plain';
  63 our $default_text_plain_charset  = undef;
  64
  65 # file to use for guessing MIME types before trying /etc/mime.types
  66 # (relative to the current git repository)
  67 our $mimetypes_file = undef;
  68
  69 # You define site-wide feature defaults here; override them with
  70 # $GITWEB_CONFIG as necessary.
  71 our %feature = (
  72         # feature => {
  73         #       'sub' => feature-sub (subroutine),
  74         #       'override' => allow-override (boolean),
  75         #       'default' => [ default options...] (array reference)}
  76         #
  77         # if feature is overridable (it means that allow-override has true value,
  78         # then feature-sub will be called with default options as parameters;
  79         # return value of feature-sub indicates if to enable specified feature
  80         #
  81         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  82
  83         'blame' => {
  84                 'sub' => \&feature_blame,
  85                 'override' => 0,
  86                 'default' => [0]},
  87
  88         'snapshot' => {
  89                 'sub' => \&feature_snapshot,
  90                 'override' => 0,
  91                 #         => [content-encoding, suffix, program]
  92                 'default' => ['x-gzip', 'gz', 'gzip']},
  93
  94         'pickaxe' => {
  95                 'sub' => \&feature_pickaxe,
  96                 'override' => 0,
  97                 'default' => [1]},
  98 );
  99
 100 sub gitweb_check_feature {
 101         my ($name) = @_;
 102         return undef unless exists $feature{$name};
 103         my ($sub, $override, @defaults) = (
 104                 $feature{$name}{'sub'},
 105                 $feature{$name}{'override'},
 106                 @{$feature{$name}{'default'}});
 107         if (!$override) { return @defaults; }
 108         return $sub->(@defaults);
 109 }
 110
 111 # To enable system wide have in $GITWEB_CONFIG
 112 # $feature{'blame'}{'default'} = [1];
 113 # To have project specific config enable override in $GITWEB_CONFIG
 114 # $feature{'blame'}{'override'} = 1;
 115 # and in project config gitweb.blame = 0|1;
 116
 117 sub feature_blame {
 118         my ($val) = git_get_project_config('blame', '--bool');
 119
 120         if ($val eq 'true') {
 121                 return 1;
 122         } elsif ($val eq 'false') {
 123                 return 0;
 124         }
 125
 126         return $_[0];
 127 }
 128
 129 # To disable system wide have in $GITWEB_CONFIG
 130 # $feature{'snapshot'}{'default'} = [undef];
 131 # To have project specific config enable override in $GITWEB_CONFIG
 132 # $feature{'blame'}{'override'} = 1;
 133 # and in project config  gitweb.snapshot = none|gzip|bzip2
 134
 135 sub feature_snapshot {
 136         my ($ctype, $suffix, $command) = @_;
 137
 138         my ($val) = git_get_project_config('snapshot');
 139
 140         if ($val eq 'gzip') {
 141                 return ('x-gzip', 'gz', 'gzip');
 142         } elsif ($val eq 'bzip2') {
 143                 return ('x-bzip2', 'bz2', 'bzip2');
 144         } elsif ($val eq 'none') {
 145                 return ();
 146         }
 147
 148         return ($ctype, $suffix, $command);
 149 }
 150
 151 # To enable system wide have in $GITWEB_CONFIG
 152 # $feature{'pickaxe'}{'default'} = [1];
 153 # To have project specific config enable override in $GITWEB_CONFIG
 154 # $feature{'pickaxe'}{'override'} = 1;
 155 # and in project config gitweb.pickaxe = 0|1;
 156
 157 sub feature_pickaxe {
 158         my ($val) = git_get_project_config('pickaxe', '--bool');
 159
 160         if ($val eq 'true') {
 161                 return (1);
 162         } elsif ($val eq 'false') {
 163                 return (0);
 164         }
 165
 166         return ($_[0]);
 167 }
 168
 169 # rename detection options for git-diff and git-diff-tree
 170 # - default is '-M', with the cost proportional to
 171 #   (number of removed files) * (number of new files).
 172 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 173 #   (number of changed files + number of removed files) * (number of new files)
 174 # - even more costly is '-C', '--find-copies-harder' with cost
 175 #   (number of files in the original tree) * (number of new files)
 176 # - one might want to include '-B' option, e.g. '-B', '-M'
 177 our @diff_opts = ('-M'); # taken from git_commit
 178
 179 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 180 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 181
 182 # version of the core git binary
 183 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 184
 185 # path to the current git repository
 186 our $git_dir;
 187
 188 $projects_list ||= $projectroot;
 189
 190 # ======================================================================
 191 # input validation and dispatch
 192 our $action = $cgi->param('a');
 193 if (defined $action) {
 194         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 195                 die_error(undef, "Invalid action parameter");
 196         }
 197 }
 198
 199 our $project = $cgi->param('p');
 200 if (defined $project) {
 201         if (!validate_input($project) ||
 202             !(-d "$projectroot/$project") ||
 203             !(-e "$projectroot/$project/HEAD")) {
 204                 undef $project;
 205                 die_error(undef, "No such project");
 206         }
 207 }
 208
 209 our $file_name = $cgi->param('f');
 210 if (defined $file_name) {
 211         if (!validate_input($file_name)) {
 212                 die_error(undef, "Invalid file parameter");
 213         }
 214 }
 215
 216 our $file_parent = $cgi->param('fp');
 217 if (defined $file_parent) {
 218         if (!validate_input($file_parent)) {
 219                 die_error(undef, "Invalid file parent parameter");
 220         }
 221 }
 222
 223 our $hash = $cgi->param('h');
 224 if (defined $hash) {
 225         if (!validate_input($hash)) {
 226                 die_error(undef, "Invalid hash parameter");
 227         }
 228 }
 229
 230 our $hash_parent = $cgi->param('hp');
 231 if (defined $hash_parent) {
 232         if (!validate_input($hash_parent)) {
 233                 die_error(undef, "Invalid hash parent parameter");
 234         }
 235 }
 236
 237 our $hash_base = $cgi->param('hb');
 238 if (defined $hash_base) {
 239         if (!validate_input($hash_base)) {
 240                 die_error(undef, "Invalid hash base parameter");
 241         }
 242 }
 243
 244 our $hash_parent_base = $cgi->param('hpb');
 245 if (defined $hash_parent_base) {
 246         if (!validate_input($hash_parent_base)) {
 247                 die_error(undef, "Invalid hash parent base parameter");
 248         }
 249 }
 250
 251 our $page = $cgi->param('pg');
 252 if (defined $page) {
 253         if ($page =~ m/[^0-9]$/) {
 254                 die_error(undef, "Invalid page parameter");
 255         }
 256 }
 257
 258 our $searchtext = $cgi->param('s');
 259 if (defined $searchtext) {
 260         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 261                 die_error(undef, "Invalid search parameter");
 262         }
 263         $searchtext = quotemeta $searchtext;
 264 }
 265
 266 # now read PATH_INFO and use it as alternative to parameters
 267 our $path_info = $ENV{"PATH_INFO"};
 268 $path_info =~ s|^/||;
 269 $path_info =~ s|/$||;
 270 if (validate_input($path_info) && !defined $project) {
 271         $project = $path_info;
 272         while ($project && !-e "$projectroot/$project/HEAD") {
 273                 $project =~ s,/*[^/]*$,,;
 274         }
 275         if (defined $project) {
 276                 $project = undef unless $project;
 277         }
 278         if ($path_info =~ m,^$project/([^/]+)/(.+)$,) {
 279                 # we got "project.git/branch/filename"
 280                 $action    ||= "blob_plain";
 281                 $hash_base ||= $1;
 282                 $file_name ||= $2;
 283         } elsif ($path_info =~ m,^$project/([^/]+)$,) {
 284                 # we got "project.git/branch"
 285                 $action ||= "shortlog";
 286                 $hash   ||= $1;
 287         }
 288 }
 289
 290 $git_dir = "$projectroot/$project";
 291
 292 # dispatch
 293 my %actions = (
 294         "blame" => \&git_blame2,
 295         "blobdiff" => \&git_blobdiff,
 296         "blobdiff_plain" => \&git_blobdiff_plain,
 297         "blob" => \&git_blob,
 298         "blob_plain" => \&git_blob_plain,
 299         "commitdiff" => \&git_commitdiff,
 300         "commitdiff_plain" => \&git_commitdiff_plain,
 301         "commit" => \&git_commit,
 302         "heads" => \&git_heads,
 303         "history" => \&git_history,
 304         "log" => \&git_log,
 305         "rss" => \&git_rss,
 306         "search" => \&git_search,
 307         "shortlog" => \&git_shortlog,
 308         "summary" => \&git_summary,
 309         "tag" => \&git_tag,
 310         "tags" => \&git_tags,
 311         "tree" => \&git_tree,
 312         "snapshot" => \&git_snapshot,
 313         # those below don't need $project
 314         "opml" => \&git_opml,
 315         "project_list" => \&git_project_list,
 316         "project_index" => \&git_project_index,
 317 );
 318
 319 if (defined $project) {
 320         $action ||= 'summary';
 321 } else {
 322         $action ||= 'project_list';
 323 }
 324 if (!defined($actions{$action})) {
 325         die_error(undef, "Unknown action");
 326 }
 327 $actions{$action}->();
 328 exit;
 329
 330 ## ======================================================================
 331 ## action links
 332
 333 sub href(%) {
 334         my %params = @_;
 335
 336         my @mapping = (
 337                 project => "p",
 338                 action => "a",
 339                 file_name => "f",
 340                 file_parent => "fp",
 341                 hash => "h",
 342                 hash_parent => "hp",
 343                 hash_base => "hb",
 344                 hash_parent_base => "hpb",
 345                 page => "pg",
 346                 order => "o",
 347                 searchtext => "s",
 348         );
 349         my %mapping = @mapping;
 350
 351         $params{'project'} = $project unless exists $params{'project'};
 352
 353         my @result = ();
 354         for (my $i = 0; $i < @mapping; $i += 2) {
 355                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 356                 if (defined $params{$name}) {
 357                         push @result, $symbol . "=" . esc_param($params{$name});
 358                 }
 359         }
 360         return "$my_uri?" . join(';', @result);
 361 }
 362
 363
 364 ## ======================================================================
 365 ## validation, quoting/unquoting and escaping
 366
 367 sub validate_input {
 368         my $input = shift;
 369
 370         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 371                 return $input;
 372         }
 373         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 374                 return undef;
 375         }
 376         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 377                 return undef;
 378         }
 379         return $input;
 380 }
 381
 382 # quote unsafe chars, but keep the slash, even when it's not
 383 # correct, but quoted slashes look too horrible in bookmarks
 384 sub esc_param {
 385         my $str = shift;
 386         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 387         $str =~ s/\+/%2B/g;
 388         $str =~ s/ /\+/g;
 389         return $str;
 390 }
 391
 392 # replace invalid utf8 character with SUBSTITUTION sequence
 393 sub esc_html {
 394         my $str = shift;
 395         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 396         $str = escapeHTML($str);
 397         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 398         return $str;
 399 }
 400
 401 # git may return quoted and escaped filenames
 402 sub unquote {
 403         my $str = shift;
 404         if ($str =~ m/^"(.*)"$/) {
 405                 $str = $1;
 406                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 407         }
 408         return $str;
 409 }
 410
 411 # escape tabs (convert tabs to spaces)
 412 sub untabify {
 413         my $line = shift;
 414
 415         while ((my $pos = index($line, "\t")) != -1) {
 416                 if (my $count = (8 - ($pos % 8))) {
 417                         my $spaces = ' ' x $count;
 418                         $line =~ s/\t/$spaces/;
 419                 }
 420         }
 421
 422         return $line;
 423 }
 424
 425 ## ----------------------------------------------------------------------
 426 ## HTML aware string manipulation
 427
 428 sub chop_str {
 429         my $str = shift;
 430         my $len = shift;
 431         my $add_len = shift || 10;
 432
 433         # allow only $len chars, but don't cut a word if it would fit in $add_len
 434         # if it doesn't fit, cut it if it's still longer than the dots we would add
 435         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 436         my $body = $1;
 437         my $tail = $2;
 438         if (length($tail) > 4) {
 439                 $tail = " ...";
 440                 $body =~ s/&[^;]*$//; # remove chopped character entities
 441         }
 442         return "$body$tail";
 443 }
 444
 445 ## ----------------------------------------------------------------------
 446 ## functions returning short strings
 447
 448 # CSS class for given age value (in seconds)
 449 sub age_class {
 450         my $age = shift;
 451
 452         if ($age < 60*60*2) {
 453                 return "age0";
 454         } elsif ($age < 60*60*24*2) {
 455                 return "age1";
 456         } else {
 457                 return "age2";
 458         }
 459 }
 460
 461 # convert age in seconds to "nn units ago" string
 462 sub age_string {
 463         my $age = shift;
 464         my $age_str;
 465
 466         if ($age > 60*60*24*365*2) {
 467                 $age_str = (int $age/60/60/24/365);
 468                 $age_str .= " years ago";
 469         } elsif ($age > 60*60*24*(365/12)*2) {
 470                 $age_str = int $age/60/60/24/(365/12);
 471                 $age_str .= " months ago";
 472         } elsif ($age > 60*60*24*7*2) {
 473                 $age_str = int $age/60/60/24/7;
 474                 $age_str .= " weeks ago";
 475         } elsif ($age > 60*60*24*2) {
 476                 $age_str = int $age/60/60/24;
 477                 $age_str .= " days ago";
 478         } elsif ($age > 60*60*2) {
 479                 $age_str = int $age/60/60;
 480                 $age_str .= " hours ago";
 481         } elsif ($age > 60*2) {
 482                 $age_str = int $age/60;
 483                 $age_str .= " min ago";
 484         } elsif ($age > 2) {
 485                 $age_str = int $age;
 486                 $age_str .= " sec ago";
 487         } else {
 488                 $age_str .= " right now";
 489         }
 490         return $age_str;
 491 }
 492
 493 # convert file mode in octal to symbolic file mode string
 494 sub mode_str {
 495         my $mode = oct shift;
 496
 497         if (S_ISDIR($mode & S_IFMT)) {
 498                 return 'drwxr-xr-x';
 499         } elsif (S_ISLNK($mode)) {
 500                 return 'lrwxrwxrwx';
 501         } elsif (S_ISREG($mode)) {
 502                 # git cares only about the executable bit
 503                 if ($mode & S_IXUSR) {
 504                         return '-rwxr-xr-x';
 505                 } else {
 506                         return '-rw-r--r--';
 507                 };
 508         } else {
 509                 return '----------';
 510         }
 511 }
 512
 513 # convert file mode in octal to file type string
 514 sub file_type {
 515         my $mode = shift;
 516
 517         if ($mode !~ m/^[0-7]+$/) {
 518                 return $mode;
 519         } else {
 520                 $mode = oct $mode;
 521         }
 522
 523         if (S_ISDIR($mode & S_IFMT)) {
 524                 return "directory";
 525         } elsif (S_ISLNK($mode)) {
 526                 return "symlink";
 527         } elsif (S_ISREG($mode)) {
 528                 return "file";
 529         } else {
 530                 return "unknown";
 531         }
 532 }
 533
 534 ## ----------------------------------------------------------------------
 535 ## functions returning short HTML fragments, or transforming HTML fragments
 536 ## which don't beling to other sections
 537
 538 # format line of commit message or tag comment
 539 sub format_log_line_html {
 540         my $line = shift;
 541
 542         $line = esc_html($line);
 543         $line =~ s/ /&nbsp;/g;
 544         if ($line =~ m/([0-9a-fA-F]{40})/) {
 545                 my $hash_text = $1;
 546                 if (git_get_type($hash_text) eq "commit") {
 547                         my $link =
 548                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 549                                         -class => "text"}, $hash_text);
 550                         $line =~ s/$hash_text/$link/;
 551                 }
 552         }
 553         return $line;
 554 }
 555
 556 # format marker of refs pointing to given object
 557 sub format_ref_marker {
 558         my ($refs, $id) = @_;
 559         my $markers = '';
 560
 561         if (defined $refs->{$id}) {
 562                 foreach my $ref (@{$refs->{$id}}) {
 563                         my ($type, $name) = qw();
 564                         # e.g. tags/v2.6.11 or heads/next
 565                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 566                                 $type = $1;
 567                                 $name = $2;
 568                         } else {
 569                                 $type = "ref";
 570                                 $name = $ref;
 571                         }
 572
 573                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 574                 }
 575         }
 576
 577         if ($markers) {
 578                 return ' <span class="refs">'. $markers . '</span>';
 579         } else {
 580                 return "";
 581         }
 582 }
 583
 584 # format, perhaps shortened and with markers, title line
 585 sub format_subject_html {
 586         my ($long, $short, $href, $extra) = @_;
 587         $extra = '' unless defined($extra);
 588
 589         if (length($short) < length($long)) {
 590                 return $cgi->a({-href => $href, -class => "list subject",
 591                                 -title => $long},
 592                        esc_html($short) . $extra);
 593         } else {
 594                 return $cgi->a({-href => $href, -class => "list subject"},
 595                        esc_html($long)  . $extra);
 596         }
 597 }
 598
 599 sub format_diff_line {
 600         my $line = shift;
 601         my $char = substr($line, 0, 1);
 602         my $diff_class = "";
 603
 604         chomp $line;
 605
 606         if ($char eq '+') {
 607                 $diff_class = " add";
 608         } elsif ($char eq "-") {
 609                 $diff_class = " rem";
 610         } elsif ($char eq "@") {
 611                 $diff_class = " chunk_header";
 612         } elsif ($char eq "\\") {
 613                 $diff_class = " incomplete";
 614         }
 615         $line = untabify($line);
 616         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 617 }
 618
 619 ## ----------------------------------------------------------------------
 620 ## git utility subroutines, invoking git commands
 621
 622 # returns path to the core git executable and the --git-dir parameter as list
 623 sub git_cmd {
 624         return $GIT, '--git-dir='.$git_dir;
 625 }
 626
 627 # returns path to the core git executable and the --git-dir parameter as string
 628 sub git_cmd_str {
 629         return join(' ', git_cmd());
 630 }
 631
 632 # get HEAD ref of given project as hash
 633 sub git_get_head_hash {
 634         my $project = shift;
 635         my $o_git_dir = $git_dir;
 636         my $retval = undef;
 637         $git_dir = "$projectroot/$project";
 638         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 639                 my $head = <$fd>;
 640                 close $fd;
 641                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 642                         $retval = $1;
 643                 }
 644         }
 645         if (defined $o_git_dir) {
 646                 $git_dir = $o_git_dir;
 647         }
 648         return $retval;
 649 }
 650
 651 # get type of given object
 652 sub git_get_type {
 653         my $hash = shift;
 654
 655         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 656         my $type = <$fd>;
 657         close $fd or return;
 658         chomp $type;
 659         return $type;
 660 }
 661
 662 sub git_get_project_config {
 663         my ($key, $type) = @_;
 664
 665         return unless ($key);
 666         $key =~ s/^gitweb\.//;
 667         return if ($key =~ m/\W/);
 668
 669         my @x = (git_cmd(), 'repo-config');
 670         if (defined $type) { push @x, $type; }
 671         push @x, "--get";
 672         push @x, "gitweb.$key";
 673         my $val = qx(@x);
 674         chomp $val;
 675         return ($val);
 676 }
 677
 678 # get hash of given path at given ref
 679 sub git_get_hash_by_path {
 680         my $base = shift;
 681         my $path = shift || return undef;
 682
 683         my $tree = $base;
 684
 685         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 686                 or die_error(undef, "Open git-ls-tree failed");
 687         my $line = <$fd>;
 688         close $fd or return undef;
 689
 690         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 691         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 692         return $3;
 693 }
 694
 695 ## ......................................................................
 696 ## git utility functions, directly accessing git repository
 697
 698 sub git_get_project_description {
 699         my $path = shift;
 700
 701         open my $fd, "$projectroot/$path/description" or return undef;
 702         my $descr = <$fd>;
 703         close $fd;
 704         chomp $descr;
 705         return $descr;
 706 }
 707
 708 sub git_get_project_url_list {
 709         my $path = shift;
 710
 711         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 712         my @git_project_url_list = map { chomp; $_ } <$fd>;
 713         close $fd;
 714
 715         return wantarray ? @git_project_url_list : \@git_project_url_list;
 716 }
 717
 718 sub git_get_projects_list {
 719         my @list;
 720
 721         if (-d $projects_list) {
 722                 # search in directory
 723                 my $dir = $projects_list;
 724                 my $pfxlen = length("$dir");
 725
 726                 File::Find::find({
 727                         follow_fast => 1, # follow symbolic links
 728                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 729                         wanted => sub {
 730                                 # skip project-list toplevel, if we get it.
 731                                 return if (m!^[/.]$!);
 732                                 # only directories can be git repositories
 733                                 return unless (-d $_);
 734
 735                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 736                                 # we check related file in $projectroot
 737                                 if (-e "$projectroot/$subdir/HEAD") {
 738                                         push @list, { path => $subdir };
 739                                         $File::Find::prune = 1;
 740                                 }
 741                         },
 742                 }, "$dir");
 743
 744         } elsif (-f $projects_list) {
 745                 # read from file(url-encoded):
 746                 # 'git%2Fgit.git Linus+Torvalds'
 747                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 748                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 749                 open my ($fd), $projects_list or return undef;
 750                 while (my $line = <$fd>) {
 751                         chomp $line;
 752                         my ($path, $owner) = split ' ', $line;
 753                         $path = unescape($path);
 754                         $owner = unescape($owner);
 755                         if (!defined $path) {
 756                                 next;
 757                         }
 758                         if (-e "$projectroot/$path/HEAD") {
 759                                 my $pr = {
 760                                         path => $path,
 761                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 762                                 };
 763                                 push @list, $pr
 764                         }
 765                 }
 766                 close $fd;
 767         }
 768         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 769         return @list;
 770 }
 771
 772 sub git_get_project_owner {
 773         my $project = shift;
 774         my $owner;
 775
 776         return undef unless $project;
 777
 778         # read from file (url-encoded):
 779         # 'git%2Fgit.git Linus+Torvalds'
 780         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 781         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 782         if (-f $projects_list) {
 783                 open (my $fd , $projects_list);
 784                 while (my $line = <$fd>) {
 785                         chomp $line;
 786                         my ($pr, $ow) = split ' ', $line;
 787                         $pr = unescape($pr);
 788                         $ow = unescape($ow);
 789                         if ($pr eq $project) {
 790                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 791                                 last;
 792                         }
 793                 }
 794                 close $fd;
 795         }
 796         if (!defined $owner) {
 797                 $owner = get_file_owner("$projectroot/$project");
 798         }
 799
 800         return $owner;
 801 }
 802
 803 sub git_get_references {
 804         my $type = shift || "";
 805         my %refs;
 806         my $fd;
 807         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 808         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 809         if (-f "$projectroot/$project/info/refs") {
 810                 open $fd, "$projectroot/$project/info/refs"
 811                         or return;
 812         } else {
 813                 open $fd, "-|", git_cmd(), "ls-remote", "."
 814                         or return;
 815         }
 816
 817         while (my $line = <$fd>) {
 818                 chomp $line;
 819                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 820                         if (defined $refs{$1}) {
 821                                 push @{$refs{$1}}, $2;
 822                         } else {
 823                                 $refs{$1} = [ $2 ];
 824                         }
 825                 }
 826         }
 827         close $fd or return;
 828         return \%refs;
 829 }
 830
 831 sub git_get_rev_name_tags {
 832         my $hash = shift || return undef;
 833
 834         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 835                 or return;
 836         my $name_rev = <$fd>;
 837         close $fd;
 838
 839         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 840                 return $1;
 841         } else {
 842                 # catches also '$hash undefined' output
 843                 return undef;
 844         }
 845 }
 846
 847 ## ----------------------------------------------------------------------
 848 ## parse to hash functions
 849
 850 sub parse_date {
 851         my $epoch = shift;
 852         my $tz = shift || "-0000";
 853
 854         my %date;
 855         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 856         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 857         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 858         $date{'hour'} = $hour;
 859         $date{'minute'} = $min;
 860         $date{'mday'} = $mday;
 861         $date{'day'} = $days[$wday];
 862         $date{'month'} = $months[$mon];
 863         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 864                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 865         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 866                              $mday, $months[$mon], $hour ,$min;
 867
 868         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 869         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 870         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 871         $date{'hour_local'} = $hour;
 872         $date{'minute_local'} = $min;
 873         $date{'tz_local'} = $tz;
 874         return %date;
 875 }
 876
 877 sub parse_tag {
 878         my $tag_id = shift;
 879         my %tag;
 880         my @comment;
 881
 882         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 883         $tag{'id'} = $tag_id;
 884         while (my $line = <$fd>) {
 885                 chomp $line;
 886                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 887                         $tag{'object'} = $1;
 888                 } elsif ($line =~ m/^type (.+)$/) {
 889                         $tag{'type'} = $1;
 890                 } elsif ($line =~ m/^tag (.+)$/) {
 891                         $tag{'name'} = $1;
 892                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 893                         $tag{'author'} = $1;
 894                         $tag{'epoch'} = $2;
 895                         $tag{'tz'} = $3;
 896                 } elsif ($line =~ m/--BEGIN/) {
 897                         push @comment, $line;
 898                         last;
 899                 } elsif ($line eq "") {
 900                         last;
 901                 }
 902         }
 903         push @comment, <$fd>;
 904         $tag{'comment'} = \@comment;
 905         close $fd or return;
 906         if (!defined $tag{'name'}) {
 907                 return
 908         };
 909         return %tag
 910 }
 911
 912 sub parse_commit {
 913         my $commit_id = shift;
 914         my $commit_text = shift;
 915
 916         my @commit_lines;
 917         my %co;
 918
 919         if (defined $commit_text) {
 920                 @commit_lines = @$commit_text;
 921         } else {
 922                 $/ = "\0";
 923                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
 924                         or return;
 925                 @commit_lines = split '\n', <$fd>;
 926                 close $fd or return;
 927                 $/ = "\n";
 928                 pop @commit_lines;
 929         }
 930         my $header = shift @commit_lines;
 931         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 932                 return;
 933         }
 934         ($co{'id'}, my @parents) = split ' ', $header;
 935         $co{'parents'} = \@parents;
 936         $co{'parent'} = $parents[0];
 937         while (my $line = shift @commit_lines) {
 938                 last if $line eq "\n";
 939                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 940                         $co{'tree'} = $1;
 941                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 942                         $co{'author'} = $1;
 943                         $co{'author_epoch'} = $2;
 944                         $co{'author_tz'} = $3;
 945                         if ($co{'author'} =~ m/^([^<]+) </) {
 946                                 $co{'author_name'} = $1;
 947                         } else {
 948                                 $co{'author_name'} = $co{'author'};
 949                         }
 950                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 951                         $co{'committer'} = $1;
 952                         $co{'committer_epoch'} = $2;
 953                         $co{'committer_tz'} = $3;
 954                         $co{'committer_name'} = $co{'committer'};
 955                         $co{'committer_name'} =~ s/ <.*//;
 956                 }
 957         }
 958         if (!defined $co{'tree'}) {
 959                 return;
 960         };
 961
 962         foreach my $title (@commit_lines) {
 963                 $title =~ s/^    //;
 964                 if ($title ne "") {
 965                         $co{'title'} = chop_str($title, 80, 5);
 966                         # remove leading stuff of merges to make the interesting part visible
 967                         if (length($title) > 50) {
 968                                 $title =~ s/^Automatic //;
 969                                 $title =~ s/^merge (of|with) /Merge ... /i;
 970                                 if (length($title) > 50) {
 971                                         $title =~ s/(http|rsync):\/\///;
 972                                 }
 973                                 if (length($title) > 50) {
 974                                         $title =~ s/(master|www|rsync)\.//;
 975                                 }
 976                                 if (length($title) > 50) {
 977                                         $title =~ s/kernel.org:?//;
 978                                 }
 979                                 if (length($title) > 50) {
 980                                         $title =~ s/\/pub\/scm//;
 981                                 }
 982                         }
 983                         $co{'title_short'} = chop_str($title, 50, 5);
 984                         last;
 985                 }
 986         }
 987         # remove added spaces
 988         foreach my $line (@commit_lines) {
 989                 $line =~ s/^    //;
 990         }
 991         $co{'comment'} = \@commit_lines;
 992
 993         my $age = time - $co{'committer_epoch'};
 994         $co{'age'} = $age;
 995         $co{'age_string'} = age_string($age);
 996         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 997         if ($age > 60*60*24*7*2) {
 998                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 999                 $co{'age_string_age'} = $co{'age_string'};
1000         } else {
1001                 $co{'age_string_date'} = $co{'age_string'};
1002                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1003         }
1004         return %co;
1005 }
1006
1007 # parse ref from ref_file, given by ref_id, with given type
1008 sub parse_ref {
1009         my $ref_file = shift;
1010         my $ref_id = shift;
1011         my $type = shift || git_get_type($ref_id);
1012         my %ref_item;
1013
1014         $ref_item{'type'} = $type;
1015         $ref_item{'id'} = $ref_id;
1016         $ref_item{'epoch'} = 0;
1017         $ref_item{'age'} = "unknown";
1018         if ($type eq "tag") {
1019                 my %tag = parse_tag($ref_id);
1020                 $ref_item{'comment'} = $tag{'comment'};
1021                 if ($tag{'type'} eq "commit") {
1022                         my %co = parse_commit($tag{'object'});
1023                         $ref_item{'epoch'} = $co{'committer_epoch'};
1024                         $ref_item{'age'} = $co{'age_string'};
1025                 } elsif (defined($tag{'epoch'})) {
1026                         my $age = time - $tag{'epoch'};
1027                         $ref_item{'epoch'} = $tag{'epoch'};
1028                         $ref_item{'age'} = age_string($age);
1029                 }
1030                 $ref_item{'reftype'} = $tag{'type'};
1031                 $ref_item{'name'} = $tag{'name'};
1032                 $ref_item{'refid'} = $tag{'object'};
1033         } elsif ($type eq "commit"){
1034                 my %co = parse_commit($ref_id);
1035                 $ref_item{'reftype'} = "commit";
1036                 $ref_item{'name'} = $ref_file;
1037                 $ref_item{'title'} = $co{'title'};
1038                 $ref_item{'refid'} = $ref_id;
1039                 $ref_item{'epoch'} = $co{'committer_epoch'};
1040                 $ref_item{'age'} = $co{'age_string'};
1041         } else {
1042                 $ref_item{'reftype'} = $type;
1043                 $ref_item{'name'} = $ref_file;
1044                 $ref_item{'refid'} = $ref_id;
1045         }
1046
1047         return %ref_item;
1048 }
1049
1050 # parse line of git-diff-tree "raw" output
1051 sub parse_difftree_raw_line {
1052         my $line = shift;
1053         my %res;
1054
1055         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1056         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1057         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1058                 $res{'from_mode'} = $1;
1059                 $res{'to_mode'} = $2;
1060                 $res{'from_id'} = $3;
1061                 $res{'to_id'} = $4;
1062                 $res{'status'} = $5;
1063                 $res{'similarity'} = $6;
1064                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1065                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1066                 } else {
1067                         $res{'file'} = unquote($7);
1068                 }
1069         }
1070         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1071         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1072                 $res{'commit'} = $1;
1073         }
1074
1075         return wantarray ? %res : \%res;
1076 }
1077
1078 # parse line of git-ls-tree output
1079 sub parse_ls_tree_line ($;%) {
1080         my $line = shift;
1081         my %opts = @_;
1082         my %res;
1083
1084         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1085         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1086
1087         $res{'mode'} = $1;
1088         $res{'type'} = $2;
1089         $res{'hash'} = $3;
1090         if ($opts{'-z'}) {
1091                 $res{'name'} = $4;
1092         } else {
1093                 $res{'name'} = unquote($4);
1094         }
1095
1096         return wantarray ? %res : \%res;
1097 }
1098
1099 ## ......................................................................
1100 ## parse to array of hashes functions
1101
1102 sub git_get_refs_list {
1103         my $ref_dir = shift;
1104         my @reflist;
1105
1106         my @refs;
1107         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1108                 or return;
1109         while (my $line = <$fd>) {
1110                 chomp $line;
1111                 if ($line =~ m/^([0-9a-fA-F]{40})\t$ref_dir\/?([^\^]+)$/) {
1112                         push @refs, { hash => $1, name => $2 };
1113                 } elsif ($line =~ m/^[0-9a-fA-F]{40}\t$ref_dir\/?(.*)\^\{\}$/ &&
1114                          $1 eq $refs[-1]{'name'}) {
1115                         # most likely a tag is followed by its peeled
1116                         # (deref) one, and when that happens we know the
1117                         # previous one was of type 'tag'.
1118                         $refs[-1]{'type'} = "tag";
1119                 }
1120         }
1121         close $fd;
1122
1123         foreach my $ref (@refs) {
1124                 my $ref_file = $ref->{'name'};
1125                 my $ref_id   = $ref->{'hash'};
1126
1127                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1128                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1129
1130                 push @reflist, \%ref_item;
1131         }
1132         # sort refs by age
1133         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1134         return \@reflist;
1135 }
1136
1137 ## ----------------------------------------------------------------------
1138 ## filesystem-related functions
1139
1140 sub get_file_owner {
1141         my $path = shift;
1142
1143         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1144         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1145         if (!defined $gcos) {
1146                 return undef;
1147         }
1148         my $owner = $gcos;
1149         $owner =~ s/[,;].*$//;
1150         return decode("utf8", $owner, Encode::FB_DEFAULT);
1151 }
1152
1153 ## ......................................................................
1154 ## mimetype related functions
1155
1156 sub mimetype_guess_file {
1157         my $filename = shift;
1158         my $mimemap = shift;
1159         -r $mimemap or return undef;
1160
1161         my %mimemap;
1162         open(MIME, $mimemap) or return undef;
1163         while (<MIME>) {
1164                 next if m/^#/; # skip comments
1165                 my ($mime, $exts) = split(/\t+/);
1166                 if (defined $exts) {
1167                         my @exts = split(/\s+/, $exts);
1168                         foreach my $ext (@exts) {
1169                                 $mimemap{$ext} = $mime;
1170                         }
1171                 }
1172         }
1173         close(MIME);
1174
1175         $filename =~ /\.(.*?)$/;
1176         return $mimemap{$1};
1177 }
1178
1179 sub mimetype_guess {
1180         my $filename = shift;
1181         my $mime;
1182         $filename =~ /\./ or return undef;
1183
1184         if ($mimetypes_file) {
1185                 my $file = $mimetypes_file;
1186                 if ($file !~ m!^/!) { # if it is relative path
1187                         # it is relative to project
1188                         $file = "$projectroot/$project/$file";
1189                 }
1190                 $mime = mimetype_guess_file($filename, $file);
1191         }
1192         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1193         return $mime;
1194 }
1195
1196 sub blob_mimetype {
1197         my $fd = shift;
1198         my $filename = shift;
1199
1200         if ($filename) {
1201                 my $mime = mimetype_guess($filename);
1202                 $mime and return $mime;
1203         }
1204
1205         # just in case
1206         return $default_blob_plain_mimetype unless $fd;
1207
1208         if (-T $fd) {
1209                 return 'text/plain' .
1210                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1211         } elsif (! $filename) {
1212                 return 'application/octet-stream';
1213         } elsif ($filename =~ m/\.png$/i) {
1214                 return 'image/png';
1215         } elsif ($filename =~ m/\.gif$/i) {
1216                 return 'image/gif';
1217         } elsif ($filename =~ m/\.jpe?g$/i) {
1218                 return 'image/jpeg';
1219         } else {
1220                 return 'application/octet-stream';
1221         }
1222 }
1223
1224 ## ======================================================================
1225 ## functions printing HTML: header, footer, error page
1226
1227 sub git_header_html {
1228         my $status = shift || "200 OK";
1229         my $expires = shift;
1230
1231         my $title = "$site_name git";
1232         if (defined $project) {
1233                 $title .= " - $project";
1234                 if (defined $action) {
1235                         $title .= "/$action";
1236                         if (defined $file_name) {
1237                                 $title .= " - $file_name";
1238                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1239                                         $title .= "/";
1240                                 }
1241                         }
1242                 }
1243         }
1244         my $content_type;
1245         # require explicit support from the UA if we are to send the page as
1246         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1247         # we have to do this because MSIE sometimes globs '*/*', pretending to
1248         # support xhtml+xml but choking when it gets what it asked for.
1249         if (defined $cgi->http('HTTP_ACCEPT') &&
1250             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1251             $cgi->Accept('application/xhtml+xml') != 0) {
1252                 $content_type = 'application/xhtml+xml';
1253         } else {
1254                 $content_type = 'text/html';
1255         }
1256         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1257                            -status=> $status, -expires => $expires);
1258         print <<EOF;
1259 <?xml version="1.0" encoding="utf-8"?>
1260 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1261 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1262 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1263 <!-- git core binaries version $git_version -->
1264 <head>
1265 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1266 <meta name="generator" content="gitweb/$version git/$git_version"/>
1267 <meta name="robots" content="index, nofollow"/>
1268 <title>$title</title>
1269 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1270 EOF
1271         if (defined $project) {
1272                 printf('<link rel="alternate" title="%s log" '.
1273                        'href="%s" type="application/rss+xml"/>'."\n",
1274                        esc_param($project), href(action=>"rss"));
1275         } else {
1276                 printf('<link rel="alternate" title="%s projects list" '.
1277                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1278                        $site_name, href(project=>undef, action=>"project_index"));
1279                 printf('<link rel="alternate" title="%s projects logs" '.
1280                        'href="%s" type="text/x-opml"/>'."\n",
1281                        $site_name, href(project=>undef, action=>"opml"));
1282         }
1283         if (defined $favicon) {
1284                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1285         }
1286
1287         print "</head>\n" .
1288               "<body>\n" .
1289               "<div class=\"page_header\">\n" .
1290               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1291               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1292               "</a>\n";
1293         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1294         if (defined $project) {
1295                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1296                 if (defined $action) {
1297                         print " / $action";
1298                 }
1299                 print "\n";
1300                 if (!defined $searchtext) {
1301                         $searchtext = "";
1302                 }
1303                 my $search_hash;
1304                 if (defined $hash_base) {
1305                         $search_hash = $hash_base;
1306                 } elsif (defined $hash) {
1307                         $search_hash = $hash;
1308                 } else {
1309                         $search_hash = "HEAD";
1310                 }
1311                 $cgi->param("a", "search");
1312                 $cgi->param("h", $search_hash);
1313                 print $cgi->startform(-method => "get", -action => $my_uri) .
1314                       "<div class=\"search\">\n" .
1315                       $cgi->hidden(-name => "p") . "\n" .
1316                       $cgi->hidden(-name => "a") . "\n" .
1317                       $cgi->hidden(-name => "h") . "\n" .
1318                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1319                       "</div>" .
1320                       $cgi->end_form() . "\n";
1321         }
1322         print "</div>\n";
1323 }
1324
1325 sub git_footer_html {
1326         print "<div class=\"page_footer\">\n";
1327         if (defined $project) {
1328                 my $descr = git_get_project_description($project);
1329                 if (defined $descr) {
1330                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1331                 }
1332                 print $cgi->a({-href => href(action=>"rss"),
1333                               -class => "rss_logo"}, "RSS") . "\n";
1334         } else {
1335                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1336                               -class => "rss_logo"}, "OPML") . " ";
1337                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1338                               -class => "rss_logo"}, "TXT") . "\n";
1339         }
1340         print "</div>\n" .
1341               "</body>\n" .
1342               "</html>";
1343 }
1344
1345 sub die_error {
1346         my $status = shift || "403 Forbidden";
1347         my $error = shift || "Malformed query, file missing or permission denied";
1348
1349         git_header_html($status);
1350         print <<EOF;
1351 <div class="page_body">
1352 <br /><br />
1353 $status - $error
1354 <br />
1355 </div>
1356 EOF
1357         git_footer_html();
1358         exit;
1359 }
1360
1361 ## ----------------------------------------------------------------------
1362 ## functions printing or outputting HTML: navigation
1363
1364 sub git_print_page_nav {
1365         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1366         $extra = '' if !defined $extra; # pager or formats
1367
1368         my @navs = qw(summary shortlog log commit commitdiff tree);
1369         if ($suppress) {
1370                 @navs = grep { $_ ne $suppress } @navs;
1371         }
1372
1373         my %arg = map { $_ => {action=>$_} } @navs;
1374         if (defined $head) {
1375                 for (qw(commit commitdiff)) {
1376                         $arg{$_}{hash} = $head;
1377                 }
1378                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1379                         for (qw(shortlog log)) {
1380                                 $arg{$_}{hash} = $head;
1381                         }
1382                 }
1383         }
1384         $arg{tree}{hash} = $treehead if defined $treehead;
1385         $arg{tree}{hash_base} = $treebase if defined $treebase;
1386
1387         print "<div class=\"page_nav\">\n" .
1388                 (join " | ",
1389                  map { $_ eq $current ?
1390                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1391                  } @navs);
1392         print "<br/>\n$extra<br/>\n" .
1393               "</div>\n";
1394 }
1395
1396 sub format_paging_nav {
1397         my ($action, $hash, $head, $page, $nrevs) = @_;
1398         my $paging_nav;
1399
1400
1401         if ($hash ne $head || $page) {
1402                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1403         } else {
1404                 $paging_nav .= "HEAD";
1405         }
1406
1407         if ($page > 0) {
1408                 $paging_nav .= " &sdot; " .
1409                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1410                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1411         } else {
1412                 $paging_nav .= " &sdot; prev";
1413         }
1414
1415         if ($nrevs >= (100 * ($page+1)-1)) {
1416                 $paging_nav .= " &sdot; " .
1417                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1418                                  -accesskey => "n", -title => "Alt-n"}, "next");
1419         } else {
1420                 $paging_nav .= " &sdot; next";
1421         }
1422
1423         return $paging_nav;
1424 }
1425
1426 ## ......................................................................
1427 ## functions printing or outputting HTML: div
1428
1429 sub git_print_header_div {
1430         my ($action, $title, $hash, $hash_base) = @_;
1431         my %args = ();
1432
1433         $args{action} = $action;
1434         $args{hash} = $hash if $hash;
1435         $args{hash_base} = $hash_base if $hash_base;
1436
1437         print "<div class=\"header\">\n" .
1438               $cgi->a({-href => href(%args), -class => "title"},
1439               $title ? $title : $action) .
1440               "\n</div>\n";
1441 }
1442
1443 #sub git_print_authorship (\%) {
1444 sub git_print_authorship {
1445         my $co = shift;
1446
1447         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1448         print "<div class=\"author_date\">" .
1449               esc_html($co->{'author_name'}) .
1450               " [$ad{'rfc2822'}";
1451         if ($ad{'hour_local'} < 6) {
1452                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1453                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1454         } else {
1455                 printf(" (%02d:%02d %s)",
1456                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1457         }
1458         print "]</div>\n";
1459 }
1460
1461 sub git_print_page_path {
1462         my $name = shift;
1463         my $type = shift;
1464         my $hb = shift;
1465
1466         if (!defined $name) {
1467                 print "<div class=\"page_path\">/</div>\n";
1468         } else {
1469                 my @dirname = split '/', $name;
1470                 my $basename = pop @dirname;
1471                 my $fullname = '';
1472
1473                 print "<div class=\"page_path\">";
1474                 foreach my $dir (@dirname) {
1475                         $fullname .= $dir . '/';
1476                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1477                                                      hash_base=>$hb),
1478                                       -title => $fullname}, esc_html($dir));
1479                         print "/";
1480                 }
1481                 if (defined $type && $type eq 'blob') {
1482                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1483                                                      hash_base=>$hb),
1484                                       -title => $name}, esc_html($basename));
1485                 } elsif (defined $type && $type eq 'tree') {
1486                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1487                                                      hash_base=>$hb),
1488                                       -title => $name}, esc_html($basename));
1489                         print "/";
1490                 } else {
1491                         print esc_html($basename);
1492                 }
1493                 print "<br/></div>\n";
1494         }
1495 }
1496
1497 # sub git_print_log (\@;%) {
1498 sub git_print_log ($;%) {
1499         my $log = shift;
1500         my %opts = @_;
1501
1502         if ($opts{'-remove_title'}) {
1503                 # remove title, i.e. first line of log
1504                 shift @$log;
1505         }
1506         # remove leading empty lines
1507         while (defined $log->[0] && $log->[0] eq "") {
1508                 shift @$log;
1509         }
1510
1511         # print log
1512         my $signoff = 0;
1513         my $empty = 0;
1514         foreach my $line (@$log) {
1515                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1516                         $signoff = 1;
1517                         $empty = 0;
1518                         if (! $opts{'-remove_signoff'}) {
1519                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1520                                 next;
1521                         } else {
1522                                 # remove signoff lines
1523                                 next;
1524                         }
1525                 } else {
1526                         $signoff = 0;
1527                 }
1528
1529                 # print only one empty line
1530                 # do not print empty line after signoff
1531                 if ($line eq "") {
1532                         next if ($empty || $signoff);
1533                         $empty = 1;
1534                 } else {
1535                         $empty = 0;
1536                 }
1537
1538                 print format_log_line_html($line) . "<br/>\n";
1539         }
1540
1541         if ($opts{'-final_empty_line'}) {
1542                 # end with single empty line
1543                 print "<br/>\n" unless $empty;
1544         }
1545 }
1546
1547 sub git_print_simplified_log {
1548         my $log = shift;
1549         my $remove_title = shift;
1550
1551         git_print_log($log,
1552                 -final_empty_line=> 1,
1553                 -remove_title => $remove_title);
1554 }
1555
1556 # print tree entry (row of git_tree), but without encompassing <tr> element
1557 sub git_print_tree_entry {
1558         my ($t, $basedir, $hash_base, $have_blame) = @_;
1559
1560         my %base_key = ();
1561         $base_key{hash_base} = $hash_base if defined $hash_base;
1562
1563         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1564         if ($t->{'type'} eq "blob") {
1565                 print "<td class=\"list\">" .
1566                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1567                                              file_name=>"$basedir$t->{'name'}", %base_key),
1568                               -class => "list"}, esc_html($t->{'name'})) .
1569                       "</td>\n" .
1570                       "<td class=\"link\">" .
1571                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1572                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1573                               "blob");
1574                 if ($have_blame) {
1575                         print " | " .
1576                                 $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1577                                                        file_name=>"$basedir$t->{'name'}", %base_key)},
1578                                         "blame");
1579                 }
1580                 if (defined $hash_base) {
1581                         print " | " .
1582                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1583                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1584                                       "history");
1585                 }
1586                 print " | " .
1587                       $cgi->a({-href => href(action=>"blob_plain",
1588                                              hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1589                               "raw") .
1590                       "</td>\n";
1591
1592         } elsif ($t->{'type'} eq "tree") {
1593                 print "<td class=\"list\">" .
1594                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1595                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1596                               esc_html($t->{'name'})) .
1597                       "</td>\n" .
1598                       "<td class=\"link\">" .
1599                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1600                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1601                               "tree");
1602                 if (defined $hash_base) {
1603                         print " | " .
1604                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1605                                                      file_name=>"$basedir$t->{'name'}")},
1606                                       "history");
1607                 }
1608                 print "</td>\n";
1609         }
1610 }
1611
1612 ## ......................................................................
1613 ## functions printing large fragments of HTML
1614
1615 sub git_difftree_body {
1616         my ($difftree, $hash, $parent) = @_;
1617
1618         print "<div class=\"list_head\">\n";
1619         if ($#{$difftree} > 10) {
1620                 print(($#{$difftree} + 1) . " files changed:\n");
1621         }
1622         print "</div>\n";
1623
1624         print "<table class=\"diff_tree\">\n";
1625         my $alternate = 0;
1626         my $patchno = 0;
1627         foreach my $line (@{$difftree}) {
1628                 my %diff = parse_difftree_raw_line($line);
1629
1630                 if ($alternate) {
1631                         print "<tr class=\"dark\">\n";
1632                 } else {
1633                         print "<tr class=\"light\">\n";
1634                 }
1635                 $alternate ^= 1;
1636
1637                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1638                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1639                 if ($diff{'to_mode'} ne ('0' x 6)) {
1640                         $to_mode_oct = oct $diff{'to_mode'};
1641                         if (S_ISREG($to_mode_oct)) { # only for regular file
1642                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1643                         }
1644                         $to_file_type = file_type($diff{'to_mode'});
1645                 }
1646                 if ($diff{'from_mode'} ne ('0' x 6)) {
1647                         $from_mode_oct = oct $diff{'from_mode'};
1648                         if (S_ISREG($to_mode_oct)) { # only for regular file
1649                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1650                         }
1651                         $from_file_type = file_type($diff{'from_mode'});
1652                 }
1653
1654                 if ($diff{'status'} eq "A") { # created
1655                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1656                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1657                         $mode_chng   .= "]</span>";
1658                         print "<td>" .
1659                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1660                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1661                                       -class => "list"}, esc_html($diff{'file'})) .
1662                               "</td>\n" .
1663                               "<td>$mode_chng</td>\n" .
1664                               "<td class=\"link\">" .
1665                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1666                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1667                                       "blob");
1668                         if ($action eq 'commitdiff') {
1669                                 # link to patch
1670                                 $patchno++;
1671                                 print " | " .
1672                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1673                         }
1674                         print "</td>\n";
1675
1676                 } elsif ($diff{'status'} eq "D") { # deleted
1677                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1678                         print "<td>" .
1679                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1680                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1681                                        -class => "list"}, esc_html($diff{'file'})) .
1682                               "</td>\n" .
1683                               "<td>$mode_chng</td>\n" .
1684                               "<td class=\"link\">" .
1685                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1686                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1687                                       "blob") .
1688                               " | ";
1689                         if ($action eq 'commitdiff') {
1690                                 # link to patch
1691                                 $patchno++;
1692                                 print " | " .
1693                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1694                         }
1695                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1696                                                      file_name=>$diff{'file'})},
1697                                       "history") .
1698                               "</td>\n";
1699
1700                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1701                         my $mode_chnge = "";
1702                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1703                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1704                                 if ($from_file_type != $to_file_type) {
1705                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1706                                 }
1707                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1708                                         if ($from_mode_str && $to_mode_str) {
1709                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1710                                         } elsif ($to_mode_str) {
1711                                                 $mode_chnge .= " mode: $to_mode_str";
1712                                         }
1713                                 }
1714                                 $mode_chnge .= "]</span>\n";
1715                         }
1716                         print "<td>";
1717                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1718                                 print $cgi->a({-href => href(action=>"blobdiff",
1719                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1720                                                              hash_base=>$hash, hash_parent_base=>$parent,
1721                                                              file_name=>$diff{'file'}),
1722                                               -class => "list"}, esc_html($diff{'file'}));
1723                         } else { # only mode changed
1724                                 print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1725                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1726                                               -class => "list"}, esc_html($diff{'file'}));
1727                         }
1728                         print "</td>\n" .
1729                               "<td>$mode_chnge</td>\n" .
1730                               "<td class=\"link\">" .
1731                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1732                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1733                                       "blob");
1734                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1735                                 if ($action eq 'commitdiff') {
1736                                         # link to patch
1737                                         $patchno++;
1738                                         print " | " .
1739                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1740                                 } else {
1741                                         print " | " .
1742                                                 $cgi->a({-href => href(action=>"blobdiff",
1743                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1744                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1745                                                                        file_name=>$diff{'file'})},
1746                                                         "diff");
1747                                 }
1748                         }
1749                         print " | " .
1750                                 $cgi->a({-href => href(action=>"history",
1751                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1752                                         "history");
1753                         print "</td>\n";
1754
1755                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1756                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1757                         my $nstatus = $status_name{$diff{'status'}};
1758                         my $mode_chng = "";
1759                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1760                                 # mode also for directories, so we cannot use $to_mode_str
1761                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1762                         }
1763                         print "<td>" .
1764                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1765                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1766                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1767                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1768                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1769                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1770                                       -class => "list"}, esc_html($diff{'from_file'})) .
1771                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1772                               "<td class=\"link\">" .
1773                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1774                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'})},
1775                                       "blob");
1776                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1777                                 if ($action eq 'commitdiff') {
1778                                         # link to patch
1779                                         $patchno++;
1780                                         print " | " .
1781                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1782                                 } else {
1783                                         print " | " .
1784                                                 $cgi->a({-href => href(action=>"blobdiff",
1785                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1786                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1787                                                                        file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1788                                                         "diff");
1789                                 }
1790                         }
1791                         print "</td>\n";
1792
1793                 } # we should not encounter Unmerged (U) or Unknown (X) status
1794                 print "</tr>\n";
1795         }
1796         print "</table>\n";
1797 }
1798
1799 sub git_patchset_body {
1800         my ($fd, $difftree, $hash, $hash_parent) = @_;
1801
1802         my $patch_idx = 0;
1803         my $in_header = 0;
1804         my $patch_found = 0;
1805         my $diffinfo;
1806
1807         print "<div class=\"patchset\">\n";
1808
1809         LINE:
1810         while (my $patch_line = <$fd>) {
1811                 chomp $patch_line;
1812
1813                 if ($patch_line =~ m/^diff /) { # "git diff" header
1814                         # beginning of patch (in patchset)
1815                         if ($patch_found) {
1816                                 # close previous patch
1817                                 print "</div>\n"; # class="patch"
1818                         } else {
1819                                 # first patch in patchset
1820                                 $patch_found = 1;
1821                         }
1822                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1823
1824                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1825                                 $diffinfo = $difftree->[$patch_idx];
1826                         } else {
1827                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1828                         }
1829                         $patch_idx++;
1830
1831                         # for now, no extended header, hence we skip empty patches
1832                         # companion to  next LINE if $in_header;
1833                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1834                                 $in_header = 1;
1835                                 next LINE;
1836                         }
1837
1838                         if ($diffinfo->{'status'} eq "A") { # added
1839                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1840                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1841                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1842                                               $diffinfo->{'to_id'}) . "(new)" .
1843                                       "</div>\n"; # class="diff_info"
1844
1845                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1846                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1847                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1848                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1849                                               $diffinfo->{'from_id'}) . "(deleted)" .
1850                                       "</div>\n"; # class="diff_info"
1851
1852                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1853                                  $diffinfo->{'status'} eq "C" || # copied
1854                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1855                                 print "<div class=\"diff_info\">" .
1856                                       file_type($diffinfo->{'from_mode'}) . ":" .
1857                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1858                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1859                                               $diffinfo->{'from_id'}) .
1860                                       " -> " .
1861                                       file_type($diffinfo->{'to_mode'}) . ":" .
1862                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1863                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1864                                               $diffinfo->{'to_id'});
1865                                 print "</div>\n"; # class="diff_info"
1866
1867                         } else { # modified, mode changed, ...
1868                                 print "<div class=\"diff_info\">" .
1869                                       file_type($diffinfo->{'from_mode'}) . ":" .
1870                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1871                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1872                                               $diffinfo->{'from_id'}) .
1873                                       " -> " .
1874                                       file_type($diffinfo->{'to_mode'}) . ":" .
1875                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1876                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1877                                               $diffinfo->{'to_id'});
1878                                 print "</div>\n"; # class="diff_info"
1879                         }
1880
1881                         #print "<div class=\"diff extended_header\">\n";
1882                         $in_header = 1;
1883                         next LINE;
1884                 } # start of patch in patchset
1885
1886
1887                 if ($in_header && $patch_line =~ m/^---/) {
1888                         #print "</div>\n"; # class="diff extended_header"
1889                         $in_header = 0;
1890
1891                         my $file = $diffinfo->{'from_file'};
1892                         $file  ||= $diffinfo->{'file'};
1893                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1894                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1895                                         -class => "list"}, esc_html($file));
1896                         $patch_line =~ s|a/.*$|a/$file|g;
1897                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1898
1899                         $patch_line = <$fd>;
1900                         chomp $patch_line;
1901
1902                         #$patch_line =~ m/^+++/;
1903                         $file    = $diffinfo->{'to_file'};
1904                         $file  ||= $diffinfo->{'file'};
1905                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1906                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1907                                         -class => "list"}, esc_html($file));
1908                         $patch_line =~ s|b/.*|b/$file|g;
1909                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1910
1911                         next LINE;
1912                 }
1913                 next LINE if $in_header;
1914
1915                 print format_diff_line($patch_line);
1916         }
1917         print "</div>\n" if $patch_found; # class="patch"
1918
1919         print "</div>\n"; # class="patchset"
1920 }
1921
1922 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1923
1924 sub git_shortlog_body {
1925         # uses global variable $project
1926         my ($revlist, $from, $to, $refs, $extra) = @_;
1927
1928         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
1929         my $have_snapshot = (defined $ctype && defined $suffix);
1930
1931         $from = 0 unless defined $from;
1932         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1933
1934         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1935         my $alternate = 0;
1936         for (my $i = $from; $i <= $to; $i++) {
1937                 my $commit = $revlist->[$i];
1938                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1939                 my $ref = format_ref_marker($refs, $commit);
1940                 my %co = parse_commit($commit);
1941                 if ($alternate) {
1942                         print "<tr class=\"dark\">\n";
1943                 } else {
1944                         print "<tr class=\"light\">\n";
1945                 }
1946                 $alternate ^= 1;
1947                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1948                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1949                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1950                       "<td>";
1951                 print format_subject_html($co{'title'}, $co{'title_short'},
1952                                           href(action=>"commit", hash=>$commit), $ref);
1953                 print "</td>\n" .
1954                       "<td class=\"link\">" .
1955                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1956                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
1957                 if ($have_snapshot) {
1958                         print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
1959                 }
1960                 print "</td>\n" .
1961                       "</tr>\n";
1962         }
1963         if (defined $extra) {
1964                 print "<tr>\n" .
1965                       "<td colspan=\"4\">$extra</td>\n" .
1966                       "</tr>\n";
1967         }
1968         print "</table>\n";
1969 }
1970
1971 sub git_history_body {
1972         # Warning: assumes constant type (blob or tree) during history
1973         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
1974
1975         $from = 0 unless defined $from;
1976         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
1977
1978         print "<table class=\"history\" cellspacing=\"0\">\n";
1979         my $alternate = 0;
1980         for (my $i = $from; $i <= $to; $i++) {
1981                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
1982                         next;
1983                 }
1984
1985                 my $commit = $1;
1986                 my %co = parse_commit($commit);
1987                 if (!%co) {
1988                         next;
1989                 }
1990
1991                 my $ref = format_ref_marker($refs, $commit);
1992
1993                 if ($alternate) {
1994                         print "<tr class=\"dark\">\n";
1995                 } else {
1996                         print "<tr class=\"light\">\n";
1997                 }
1998                 $alternate ^= 1;
1999                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2000                       # shortlog uses      chop_str($co{'author_name'}, 10)
2001                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2002                       "<td>";
2003                 # originally git_history used chop_str($co{'title'}, 50)
2004                 print format_subject_html($co{'title'}, $co{'title_short'},
2005                                           href(action=>"commit", hash=>$commit), $ref);
2006                 print "</td>\n" .
2007                       "<td class=\"link\">" .
2008                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2009                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2010                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
2011
2012                 if ($ftype eq 'blob') {
2013                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2014                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2015                         if (defined $blob_current && defined $blob_parent &&
2016                                         $blob_current ne $blob_parent) {
2017                                 print " | " .
2018                                         $cgi->a({-href => href(action=>"blobdiff",
2019                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2020                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2021                                                                file_name=>$file_name)},
2022                                                 "diff to current");
2023                         }
2024                 }
2025                 print "</td>\n" .
2026                       "</tr>\n";
2027         }
2028         if (defined $extra) {
2029                 print "<tr>\n" .
2030                       "<td colspan=\"4\">$extra</td>\n" .
2031                       "</tr>\n";
2032         }
2033         print "</table>\n";
2034 }
2035
2036 sub git_tags_body {
2037         # uses global variable $project
2038         my ($taglist, $from, $to, $extra) = @_;
2039         $from = 0 unless defined $from;
2040         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2041
2042         print "<table class=\"tags\" cellspacing=\"0\">\n";
2043         my $alternate = 0;
2044         for (my $i = $from; $i <= $to; $i++) {
2045                 my $entry = $taglist->[$i];
2046                 my %tag = %$entry;
2047                 my $comment_lines = $tag{'comment'};
2048                 my $comment = shift @$comment_lines;
2049                 my $comment_short;
2050                 if (defined $comment) {
2051                         $comment_short = chop_str($comment, 30, 5);
2052                 }
2053                 if ($alternate) {
2054                         print "<tr class=\"dark\">\n";
2055                 } else {
2056                         print "<tr class=\"light\">\n";
2057                 }
2058                 $alternate ^= 1;
2059                 print "<td><i>$tag{'age'}</i></td>\n" .
2060                       "<td>" .
2061                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2062                                -class => "list name"}, esc_html($tag{'name'})) .
2063                       "</td>\n" .
2064                       "<td>";
2065                 if (defined $comment) {
2066                         print format_subject_html($comment, $comment_short,
2067                                                   href(action=>"tag", hash=>$tag{'id'}));
2068                 }
2069                 print "</td>\n" .
2070                       "<td class=\"selflink\">";
2071                 if ($tag{'type'} eq "tag") {
2072                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2073                 } else {
2074                         print "&nbsp;";
2075                 }
2076                 print "</td>\n" .
2077                       "<td class=\"link\">" . " | " .
2078                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2079                 if ($tag{'reftype'} eq "commit") {
2080                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2081                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2082                 } elsif ($tag{'reftype'} eq "blob") {
2083                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2084                 }
2085                 print "</td>\n" .
2086                       "</tr>";
2087         }
2088         if (defined $extra) {
2089                 print "<tr>\n" .
2090                       "<td colspan=\"5\">$extra</td>\n" .
2091                       "</tr>\n";
2092         }
2093         print "</table>\n";
2094 }
2095
2096 sub git_heads_body {
2097         # uses global variable $project
2098         my ($taglist, $head, $from, $to, $extra) = @_;
2099         $from = 0 unless defined $from;
2100         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2101
2102         print "<table class=\"heads\" cellspacing=\"0\">\n";
2103         my $alternate = 0;
2104         for (my $i = $from; $i <= $to; $i++) {
2105                 my $entry = $taglist->[$i];
2106                 my %tag = %$entry;
2107                 my $curr = $tag{'id'} eq $head;
2108                 if ($alternate) {
2109                         print "<tr class=\"dark\">\n";
2110                 } else {
2111                         print "<tr class=\"light\">\n";
2112                 }
2113                 $alternate ^= 1;
2114                 print "<td><i>$tag{'age'}</i></td>\n" .
2115                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2116                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2117                                -class => "list name"},esc_html($tag{'name'})) .
2118                       "</td>\n" .
2119                       "<td class=\"link\">" .
2120                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2121                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") .
2122                       "</td>\n" .
2123                       "</tr>";
2124         }
2125         if (defined $extra) {
2126                 print "<tr>\n" .
2127                       "<td colspan=\"3\">$extra</td>\n" .
2128                       "</tr>\n";
2129         }
2130         print "</table>\n";
2131 }
2132
2133 ## ======================================================================
2134 ## ======================================================================
2135 ## actions
2136
2137 sub git_project_list {
2138         my $order = $cgi->param('o');
2139         if (defined $order && $order !~ m/project|descr|owner|age/) {
2140                 die_error(undef, "Unknown order parameter");
2141         }
2142
2143         my @list = git_get_projects_list();
2144         my @projects;
2145         if (!@list) {
2146                 die_error(undef, "No projects found");
2147         }
2148         foreach my $pr (@list) {
2149                 my $head = git_get_head_hash($pr->{'path'});
2150                 if (!defined $head) {
2151                         next;
2152                 }
2153                 $git_dir = "$projectroot/$pr->{'path'}";
2154                 my %co = parse_commit($head);
2155                 if (!%co) {
2156                         next;
2157                 }
2158                 $pr->{'commit'} = \%co;
2159                 if (!defined $pr->{'descr'}) {
2160                         my $descr = git_get_project_description($pr->{'path'}) || "";
2161                         $pr->{'descr'} = chop_str($descr, 25, 5);
2162                 }
2163                 if (!defined $pr->{'owner'}) {
2164                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2165                 }
2166                 push @projects, $pr;
2167         }
2168
2169         git_header_html();
2170         if (-f $home_text) {
2171                 print "<div class=\"index_include\">\n";
2172                 open (my $fd, $home_text);
2173                 print <$fd>;
2174                 close $fd;
2175                 print "</div>\n";
2176         }
2177         print "<table class=\"project_list\">\n" .
2178               "<tr>\n";
2179         $order ||= "project";
2180         if ($order eq "project") {
2181                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2182                 print "<th>Project</th>\n";
2183         } else {
2184                 print "<th>" .
2185                       $cgi->a({-href => href(project=>undef, order=>'project'),
2186                                -class => "header"}, "Project") .
2187                       "</th>\n";
2188         }
2189         if ($order eq "descr") {
2190                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2191                 print "<th>Description</th>\n";
2192         } else {
2193                 print "<th>" .
2194                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2195                                -class => "header"}, "Description") .
2196                       "</th>\n";
2197         }
2198         if ($order eq "owner") {
2199                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2200                 print "<th>Owner</th>\n";
2201         } else {
2202                 print "<th>" .
2203                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2204                                -class => "header"}, "Owner") .
2205                       "</th>\n";
2206         }
2207         if ($order eq "age") {
2208                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2209                 print "<th>Last Change</th>\n";
2210         } else {
2211                 print "<th>" .
2212                       $cgi->a({-href => href(project=>undef, order=>'age'),
2213                                -class => "header"}, "Last Change") .
2214                       "</th>\n";
2215         }
2216         print "<th></th>\n" .
2217               "</tr>\n";
2218         my $alternate = 0;
2219         foreach my $pr (@projects) {
2220                 if ($alternate) {
2221                         print "<tr class=\"dark\">\n";
2222                 } else {
2223                         print "<tr class=\"light\">\n";
2224                 }
2225                 $alternate ^= 1;
2226                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2227                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2228                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2229                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2230                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2231                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2232                       "<td class=\"link\">" .
2233                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2234                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2235                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") .
2236                       "</td>\n" .
2237                       "</tr>\n";
2238         }
2239         print "</table>\n";
2240         git_footer_html();
2241 }
2242
2243 sub git_project_index {
2244         my @projects = git_get_projects_list();
2245
2246         print $cgi->header(
2247                 -type => 'text/plain',
2248                 -charset => 'utf-8',
2249                 -content_disposition => qq(inline; filename="index.aux"));
2250
2251         foreach my $pr (@projects) {
2252                 if (!exists $pr->{'owner'}) {
2253                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2254                 }
2255
2256                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2257                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2258                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2259                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2260                 $path  =~ s/ /\+/g;
2261                 $owner =~ s/ /\+/g;
2262
2263                 print "$path $owner\n";
2264         }
2265 }
2266
2267 sub git_summary {
2268         my $descr = git_get_project_description($project) || "none";
2269         my $head = git_get_head_hash($project);
2270         my %co = parse_commit($head);
2271         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2272
2273         my $owner = git_get_project_owner($project);
2274
2275         my $refs = git_get_references();
2276         git_header_html();
2277         git_print_page_nav('summary','', $head);
2278
2279         print "<div class=\"title\">&nbsp;</div>\n";
2280         print "<table cellspacing=\"0\">\n" .
2281               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2282               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2283               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2284         # use per project git URL list in $projectroot/$project/cloneurl
2285         # or make project git URL from git base URL and project name
2286         my $url_tag = "URL";
2287         my @url_list = git_get_project_url_list($project);
2288         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2289         foreach my $git_url (@url_list) {
2290                 next unless $git_url;
2291                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2292                 $url_tag = "";
2293         }
2294         print "</table>\n";
2295
2296         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2297                 git_get_head_hash($project)
2298                 or die_error(undef, "Open git-rev-list failed");
2299         my @revlist = map { chomp; $_ } <$fd>;
2300         close $fd;
2301         git_print_header_div('shortlog');
2302         git_shortlog_body(\@revlist, 0, 15, $refs,
2303                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2304
2305         my $taglist = git_get_refs_list("refs/tags");
2306         if (defined @$taglist) {
2307                 git_print_header_div('tags');
2308                 git_tags_body($taglist, 0, 15,
2309                               $cgi->a({-href => href(action=>"tags")}, "..."));
2310         }
2311
2312         my $headlist = git_get_refs_list("refs/heads");
2313         if (defined @$headlist) {
2314                 git_print_header_div('heads');
2315                 git_heads_body($headlist, $head, 0, 15,
2316                                $cgi->a({-href => href(action=>"heads")}, "..."));
2317         }
2318
2319         git_footer_html();
2320 }
2321
2322 sub git_tag {
2323         my $head = git_get_head_hash($project);
2324         git_header_html();
2325         git_print_page_nav('','', $head,undef,$head);
2326         my %tag = parse_tag($hash);
2327         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2328         print "<div class=\"title_text\">\n" .
2329               "<table cellspacing=\"0\">\n" .
2330               "<tr>\n" .
2331               "<td>object</td>\n" .
2332               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2333                                $tag{'object'}) . "</td>\n" .
2334               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2335                                               $tag{'type'}) . "</td>\n" .
2336               "</tr>\n";
2337         if (defined($tag{'author'})) {
2338                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2339                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2340                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2341                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2342                         "</td></tr>\n";
2343         }
2344         print "</table>\n\n" .
2345               "</div>\n";
2346         print "<div class=\"page_body\">";
2347         my $comment = $tag{'comment'};
2348         foreach my $line (@$comment) {
2349                 print esc_html($line) . "<br/>\n";
2350         }
2351         print "</div>\n";
2352         git_footer_html();
2353 }
2354
2355 sub git_blame2 {
2356         my $fd;
2357         my $ftype;
2358
2359         my ($have_blame) = gitweb_check_feature('blame');
2360         if (!$have_blame) {
2361                 die_error('403 Permission denied', "Permission denied");
2362         }
2363         die_error('404 Not Found', "File name not defined") if (!$file_name);
2364         $hash_base ||= git_get_head_hash($project);
2365         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2366         my %co = parse_commit($hash_base)
2367                 or die_error(undef, "Reading commit failed");
2368         if (!defined $hash) {
2369                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2370                         or die_error(undef, "Error looking up file");
2371         }
2372         $ftype = git_get_type($hash);
2373         if ($ftype !~ "blob") {
2374                 die_error("400 Bad Request", "Object is not a blob");
2375         }
2376         open ($fd, "-|", git_cmd(), "blame", '-l', $file_name, $hash_base)
2377                 or die_error(undef, "Open git-blame failed");
2378         git_header_html();
2379         my $formats_nav =
2380                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2381                         "blob") .
2382                 " | " .
2383                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2384                         "head");
2385         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2386         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2387         git_print_page_path($file_name, $ftype, $hash_base);
2388         my @rev_color = (qw(light2 dark2));
2389         my $num_colors = scalar(@rev_color);
2390         my $current_color = 0;
2391         my $last_rev;
2392         print <<HTML;
2393 <div class="page_body">
2394 <table class="blame">
2395 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2396 HTML
2397         while (<$fd>) {
2398                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2399                 my $full_rev = $1;
2400                 my $rev = substr($full_rev, 0, 8);
2401                 my $lineno = $2;
2402                 my $data = $3;
2403
2404                 if (!defined $last_rev) {
2405                         $last_rev = $full_rev;
2406                 } elsif ($last_rev ne $full_rev) {
2407                         $last_rev = $full_rev;
2408                         $current_color = ++$current_color % $num_colors;
2409                 }
2410                 print "<tr class=\"$rev_color[$current_color]\">\n";
2411                 print "<td class=\"sha1\">" .
2412                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2413                                 esc_html($rev)) . "</td>\n";
2414                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2415                       esc_html($lineno) . "</a></td>\n";
2416                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2417                 print "</tr>\n";
2418         }
2419         print "</table>\n";
2420         print "</div>";
2421         close $fd
2422                 or print "Reading blob failed\n";
2423         git_footer_html();
2424 }
2425
2426 sub git_blame {
2427         my $fd;
2428
2429         my ($have_blame) = gitweb_check_feature('blame');
2430         if (!$have_blame) {
2431                 die_error('403 Permission denied', "Permission denied");
2432         }
2433         die_error('404 Not Found', "File name not defined") if (!$file_name);
2434         $hash_base ||= git_get_head_hash($project);
2435         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2436         my %co = parse_commit($hash_base)
2437                 or die_error(undef, "Reading commit failed");
2438         if (!defined $hash) {
2439                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2440                         or die_error(undef, "Error lookup file");
2441         }
2442         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2443                 or die_error(undef, "Open git-annotate failed");
2444         git_header_html();
2445         my $formats_nav =
2446                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2447                         "blob") .
2448                 " | " .
2449                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2450                         "head");
2451         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2452         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2453         git_print_page_path($file_name, 'blob', $hash_base);
2454         print "<div class=\"page_body\">\n";
2455         print <<HTML;
2456 <table class="blame">
2457   <tr>
2458     <th>Commit</th>
2459     <th>Age</th>
2460     <th>Author</th>
2461     <th>Line</th>
2462     <th>Data</th>
2463   </tr>
2464 HTML
2465         my @line_class = (qw(light dark));
2466         my $line_class_len = scalar (@line_class);
2467         my $line_class_num = $#line_class;
2468         while (my $line = <$fd>) {
2469                 my $long_rev;
2470                 my $short_rev;
2471                 my $author;
2472                 my $time;
2473                 my $lineno;
2474                 my $data;
2475                 my $age;
2476                 my $age_str;
2477                 my $age_class;
2478
2479                 chomp $line;
2480                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2481
2482                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2483                         $long_rev = $1;
2484                         $author   = $2;
2485                         $time     = $3;
2486                         $lineno   = $4;
2487                         $data     = $5;
2488                 } else {
2489                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2490                         next;
2491                 }
2492                 $short_rev  = substr ($long_rev, 0, 8);
2493                 $age        = time () - $time;
2494                 $age_str    = age_string ($age);
2495                 $age_str    =~ s/ /&nbsp;/g;
2496                 $age_class  = age_class($age);
2497                 $author     = esc_html ($author);
2498                 $author     =~ s/ /&nbsp;/g;
2499
2500                 $data = untabify($data);
2501                 $data = esc_html ($data);
2502
2503                 print <<HTML;
2504   <tr class="$line_class[$line_class_num]">
2505     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2506     <td class="$age_class">$age_str</td>
2507     <td>$author</td>
2508     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2509     <td class="pre">$data</td>
2510   </tr>
2511 HTML
2512         } # while (my $line = <$fd>)
2513         print "</table>\n\n";
2514         close $fd
2515                 or print "Reading blob failed.\n";
2516         print "</div>";
2517         git_footer_html();
2518 }
2519
2520 sub git_tags {
2521         my $head = git_get_head_hash($project);
2522         git_header_html();
2523         git_print_page_nav('','', $head,undef,$head);
2524         git_print_header_div('summary', $project);
2525
2526         my $taglist = git_get_refs_list("refs/tags");
2527         if (defined @$taglist) {
2528                 git_tags_body($taglist);
2529         }
2530         git_footer_html();
2531 }
2532
2533 sub git_heads {
2534         my $head = git_get_head_hash($project);
2535         git_header_html();
2536         git_print_page_nav('','', $head,undef,$head);
2537         git_print_header_div('summary', $project);
2538
2539         my $taglist = git_get_refs_list("refs/heads");
2540         if (defined @$taglist) {
2541                 git_heads_body($taglist, $head);
2542         }
2543         git_footer_html();
2544 }
2545
2546 sub git_blob_plain {
2547         my $expires;
2548
2549         if (!defined $hash) {
2550                 if (defined $file_name) {
2551                         my $base = $hash_base || git_get_head_hash($project);
2552                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2553                                 or die_error(undef, "Error lookup file");
2554                 } else {
2555                         die_error(undef, "No file name defined");
2556                 }
2557         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2558                 # blobs defined by non-textual hash id's can be cached
2559                 $expires = "+1d";
2560         }
2561
2562         my $type = shift;
2563         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2564                 or die_error(undef, "Couldn't cat $file_name, $hash");
2565
2566         $type ||= blob_mimetype($fd, $file_name);
2567
2568         # save as filename, even when no $file_name is given
2569         my $save_as = "$hash";
2570         if (defined $file_name) {
2571                 $save_as = $file_name;
2572         } elsif ($type =~ m/^text\//) {
2573                 $save_as .= '.txt';
2574         }
2575
2576         print $cgi->header(
2577                 -type => "$type",
2578                 -expires=>$expires,
2579                 -content_disposition => "inline; filename=\"$save_as\"");
2580         undef $/;
2581         binmode STDOUT, ':raw';
2582         print <$fd>;
2583         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2584         $/ = "\n";
2585         close $fd;
2586 }
2587
2588 sub git_blob {
2589         my $expires;
2590
2591         if (!defined $hash) {
2592                 if (defined $file_name) {
2593                         my $base = $hash_base || git_get_head_hash($project);
2594                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2595                                 or die_error(undef, "Error lookup file");
2596                 } else {
2597                         die_error(undef, "No file name defined");
2598                 }
2599         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2600                 # blobs defined by non-textual hash id's can be cached
2601                 $expires = "+1d";
2602         }
2603
2604         my ($have_blame) = gitweb_check_feature('blame');
2605         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2606                 or die_error(undef, "Couldn't cat $file_name, $hash");
2607         my $mimetype = blob_mimetype($fd, $file_name);
2608         if ($mimetype !~ m/^text\//) {
2609                 close $fd;
2610                 return git_blob_plain($mimetype);
2611         }
2612         git_header_html(undef, $expires);
2613         my $formats_nav = '';
2614         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2615                 if (defined $file_name) {
2616                         if ($have_blame) {
2617                                 $formats_nav .=
2618                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2619                                                                hash=>$hash, file_name=>$file_name)},
2620                                                 "blame") .
2621                                         " | ";
2622                         }
2623                         $formats_nav .=
2624                                 $cgi->a({-href => href(action=>"blob_plain",
2625                                                        hash=>$hash, file_name=>$file_name)},
2626                                         "plain") .
2627                                 " | " .
2628                                 $cgi->a({-href => href(action=>"blob",
2629                                                        hash_base=>"HEAD", file_name=>$file_name)},
2630                                         "head");
2631                 } else {
2632                         $formats_nav .=
2633                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "plain");
2634                 }
2635                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2636                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2637         } else {
2638                 print "<div class=\"page_nav\">\n" .
2639                       "<br/><br/></div>\n" .
2640                       "<div class=\"title\">$hash</div>\n";
2641         }
2642         git_print_page_path($file_name, "blob", $hash_base);
2643         print "<div class=\"page_body\">\n";
2644         my $nr;
2645         while (my $line = <$fd>) {
2646                 chomp $line;
2647                 $nr++;
2648                 $line = untabify($line);
2649                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2650                        $nr, $nr, $nr, esc_html($line);
2651         }
2652         close $fd
2653                 or print "Reading blob failed.\n";
2654         print "</div>";
2655         git_footer_html();
2656 }
2657
2658 sub git_tree {
2659         if (!defined $hash) {
2660                 $hash = git_get_head_hash($project);
2661                 if (defined $file_name) {
2662                         my $base = $hash_base || $hash;
2663                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2664                 }
2665                 if (!defined $hash_base) {
2666                         $hash_base = $hash;
2667                 }
2668         }
2669         $/ = "\0";
2670         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2671                 or die_error(undef, "Open git-ls-tree failed");
2672         my @entries = map { chomp; $_ } <$fd>;
2673         close $fd or die_error(undef, "Reading tree failed");
2674         $/ = "\n";
2675
2676         my $refs = git_get_references();
2677         my $ref = format_ref_marker($refs, $hash_base);
2678         git_header_html();
2679         my $base = "";
2680         my ($have_blame) = gitweb_check_feature('blame');
2681         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2682                 git_print_page_nav('tree','', $hash_base);
2683                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2684         } else {
2685                 undef $hash_base;
2686                 print "<div class=\"page_nav\">\n";
2687                 print "<br/><br/></div>\n";
2688                 print "<div class=\"title\">$hash</div>\n";
2689         }
2690         if (defined $file_name) {
2691                 $base = esc_html("$file_name/");
2692         }
2693         git_print_page_path($file_name, 'tree', $hash_base);
2694         print "<div class=\"page_body\">\n";
2695         print "<table cellspacing=\"0\">\n";
2696         my $alternate = 0;
2697         foreach my $line (@entries) {
2698                 my %t = parse_ls_tree_line($line, -z => 1);
2699
2700                 if ($alternate) {
2701                         print "<tr class=\"dark\">\n";
2702                 } else {
2703                         print "<tr class=\"light\">\n";
2704                 }
2705                 $alternate ^= 1;
2706
2707                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2708
2709                 print "</tr>\n";
2710         }
2711         print "</table>\n" .
2712               "</div>";
2713         git_footer_html();
2714 }
2715
2716 sub git_snapshot {
2717
2718         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2719         my $have_snapshot = (defined $ctype && defined $suffix);
2720         if (!$have_snapshot) {
2721                 die_error('403 Permission denied', "Permission denied");
2722         }
2723
2724         if (!defined $hash) {
2725                 $hash = git_get_head_hash($project);
2726         }
2727
2728         my $filename = basename($project) . "-$hash.tar.$suffix";
2729
2730         print $cgi->header(-type => 'application/x-tar',
2731                            -content_encoding => $ctype,
2732                            -content_disposition => "inline; filename=\"$filename\"",
2733                            -status => '200 OK');
2734
2735         my $git_command = git_cmd_str();
2736         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2737                 die_error(undef, "Execute git-tar-tree failed.");
2738         binmode STDOUT, ':raw';
2739         print <$fd>;
2740         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2741         close $fd;
2742
2743 }
2744
2745 sub git_log {
2746         my $head = git_get_head_hash($project);
2747         if (!defined $hash) {
2748                 $hash = $head;
2749         }
2750         if (!defined $page) {
2751                 $page = 0;
2752         }
2753         my $refs = git_get_references();
2754
2755         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2756         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2757                 or die_error(undef, "Open git-rev-list failed");
2758         my @revlist = map { chomp; $_ } <$fd>;
2759         close $fd;
2760
2761         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2762
2763         git_header_html();
2764         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2765
2766         if (!@revlist) {
2767                 my %co = parse_commit($hash);
2768
2769                 git_print_header_div('summary', $project);
2770                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2771         }
2772         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2773                 my $commit = $revlist[$i];
2774                 my $ref = format_ref_marker($refs, $commit);
2775                 my %co = parse_commit($commit);
2776                 next if !%co;
2777                 my %ad = parse_date($co{'author_epoch'});
2778                 git_print_header_div('commit',
2779                                "<span class=\"age\">$co{'age_string'}</span>" .
2780                                esc_html($co{'title'}) . $ref,
2781                                $commit);
2782                 print "<div class=\"title_text\">\n" .
2783                       "<div class=\"log_link\">\n" .
2784                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2785                       " | " .
2786                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2787                       "<br/>\n" .
2788                       "</div>\n" .
2789                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2790                       "</div>\n";
2791
2792                 print "<div class=\"log_body\">\n";
2793                 git_print_simplified_log($co{'comment'});
2794                 print "</div>\n";
2795         }
2796         git_footer_html();
2797 }
2798
2799 sub git_commit {
2800         my %co = parse_commit($hash);
2801         if (!%co) {
2802                 die_error(undef, "Unknown commit object");
2803         }
2804         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2805         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2806
2807         my $parent = $co{'parent'};
2808         if (!defined $parent) {
2809                 $parent = "--root";
2810         }
2811         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2812                 or die_error(undef, "Open git-diff-tree failed");
2813         my @difftree = map { chomp; $_ } <$fd>;
2814         close $fd or die_error(undef, "Reading git-diff-tree failed");
2815
2816         # non-textual hash id's can be cached
2817         my $expires;
2818         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2819                 $expires = "+1d";
2820         }
2821         my $refs = git_get_references();
2822         my $ref = format_ref_marker($refs, $co{'id'});
2823
2824         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2825         my $have_snapshot = (defined $ctype && defined $suffix);
2826
2827         my $formats_nav = '';
2828         if (defined $file_name && defined $co{'parent'}) {
2829                 my $parent = $co{'parent'};
2830                 $formats_nav .=
2831                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2832                                 "blame");
2833         }
2834         git_header_html(undef, $expires);
2835         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2836                            $hash, $co{'tree'}, $hash,
2837                            $formats_nav);
2838
2839         if (defined $co{'parent'}) {
2840                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2841         } else {
2842                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2843         }
2844         print "<div class=\"title_text\">\n" .
2845               "<table cellspacing=\"0\">\n";
2846         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2847               "<tr>" .
2848               "<td></td><td> $ad{'rfc2822'}";
2849         if ($ad{'hour_local'} < 6) {
2850                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2851                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2852         } else {
2853                 printf(" (%02d:%02d %s)",
2854                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2855         }
2856         print "</td>" .
2857               "</tr>\n";
2858         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2859         print "<tr><td></td><td> $cd{'rfc2822'}" .
2860               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2861               "</td></tr>\n";
2862         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2863         print "<tr>" .
2864               "<td>tree</td>" .
2865               "<td class=\"sha1\">" .
2866               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2867                        class => "list"}, $co{'tree'}) .
2868               "</td>" .
2869               "<td class=\"link\">" .
2870               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2871                       "tree");
2872         if ($have_snapshot) {
2873                 print " | " .
2874                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2875         }
2876         print "</td>" .
2877               "</tr>\n";
2878         my $parents = $co{'parents'};
2879         foreach my $par (@$parents) {
2880                 print "<tr>" .
2881                       "<td>parent</td>" .
2882                       "<td class=\"sha1\">" .
2883                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2884                                class => "list"}, $par) .
2885                       "</td>" .
2886                       "<td class=\"link\">" .
2887                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2888                       " | " .
2889                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
2890                       "</td>" .
2891                       "</tr>\n";
2892         }
2893         print "</table>".
2894               "</div>\n";
2895
2896         print "<div class=\"page_body\">\n";
2897         git_print_log($co{'comment'});
2898         print "</div>\n";
2899
2900         git_difftree_body(\@difftree, $hash, $parent);
2901
2902         git_footer_html();
2903 }
2904
2905 sub git_blobdiff {
2906         my $format = shift || 'html';
2907
2908         my $fd;
2909         my @difftree;
2910         my %diffinfo;
2911         my $expires;
2912
2913         # preparing $fd and %diffinfo for git_patchset_body
2914         # new style URI
2915         if (defined $hash_base && defined $hash_parent_base) {
2916                 if (defined $file_name) {
2917                         # read raw output
2918                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
2919                                 "--", $file_name
2920                                 or die_error(undef, "Open git-diff-tree failed");
2921                         @difftree = map { chomp; $_ } <$fd>;
2922                         close $fd
2923                                 or die_error(undef, "Reading git-diff-tree failed");
2924                         @difftree
2925                                 or die_error('404 Not Found', "Blob diff not found");
2926
2927                 } elsif (defined $hash &&
2928                          $hash =~ /[0-9a-fA-F]{40}/) {
2929                         # try to find filename from $hash
2930
2931                         # read filtered raw output
2932                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
2933                                 or die_error(undef, "Open git-diff-tree failed");
2934                         @difftree =
2935                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
2936                                 # $hash == to_id
2937                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
2938                                 map { chomp; $_ } <$fd>;
2939                         close $fd
2940                                 or die_error(undef, "Reading git-diff-tree failed");
2941                         @difftree
2942                                 or die_error('404 Not Found', "Blob diff not found");
2943
2944                 } else {
2945                         die_error('404 Not Found', "Missing one of the blob diff parameters");
2946                 }
2947
2948                 if (@difftree > 1) {
2949                         die_error('404 Not Found', "Ambiguous blob diff specification");
2950                 }
2951
2952                 %diffinfo = parse_difftree_raw_line($difftree[0]);
2953                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
2954                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
2955
2956                 $hash_parent ||= $diffinfo{'from_id'};
2957                 $hash        ||= $diffinfo{'to_id'};
2958
2959                 # non-textual hash id's can be cached
2960                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
2961                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
2962                         $expires = '+1d';
2963                 }
2964
2965                 # open patch output
2966                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
2967                         '-p', $hash_parent_base, $hash_base,
2968                         "--", $file_name
2969                         or die_error(undef, "Open git-diff-tree failed");
2970         }
2971
2972         # old/legacy style URI
2973         if (!%diffinfo && # if new style URI failed
2974             defined $hash && defined $hash_parent) {
2975                 # fake git-diff-tree raw output
2976                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
2977                 $diffinfo{'from_id'} = $hash_parent;
2978                 $diffinfo{'to_id'}   = $hash;
2979                 if (defined $file_name) {
2980                         if (defined $file_parent) {
2981                                 $diffinfo{'status'} = '2';
2982                                 $diffinfo{'from_file'} = $file_parent;
2983                                 $diffinfo{'to_file'}   = $file_name;
2984                         } else { # assume not renamed
2985                                 $diffinfo{'status'} = '1';
2986                                 $diffinfo{'from_file'} = $file_name;
2987                                 $diffinfo{'to_file'}   = $file_name;
2988                         }
2989                 } else { # no filename given
2990                         $diffinfo{'status'} = '2';
2991                         $diffinfo{'from_file'} = $hash_parent;
2992                         $diffinfo{'to_file'}   = $hash;
2993                 }
2994
2995                 # non-textual hash id's can be cached
2996                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
2997                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
2998                         $expires = '+1d';
2999                 }
3000
3001                 # open patch output
3002                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3003                         or die_error(undef, "Open git-diff failed");
3004         } else  {
3005                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3006                         unless %diffinfo;
3007         }
3008
3009         # header
3010         if ($format eq 'html') {
3011                 my $formats_nav =
3012                         $cgi->a({-href => href(action=>"blobdiff_plain",
3013                                                hash=>$hash, hash_parent=>$hash_parent,
3014                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3015                                                file_name=>$file_name, file_parent=>$file_parent)},
3016                                 "plain");
3017                 git_header_html(undef, $expires);
3018                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3019                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3020                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3021                 } else {
3022                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3023                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3024                 }
3025                 if (defined $file_name) {
3026                         git_print_page_path($file_name, "blob", $hash_base);
3027                 } else {
3028                         print "<div class=\"page_path\"></div>\n";
3029                 }
3030
3031         } elsif ($format eq 'plain') {
3032                 print $cgi->header(
3033                         -type => 'text/plain',
3034                         -charset => 'utf-8',
3035                         -expires => $expires,
3036                         -content_disposition => qq(inline; filename="${file_name}.patch"));
3037
3038                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3039
3040         } else {
3041                 die_error(undef, "Unknown blobdiff format");
3042         }
3043
3044         # patch
3045         if ($format eq 'html') {
3046                 print "<div class=\"page_body\">\n";
3047
3048                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3049                 close $fd;
3050
3051                 print "</div>\n"; # class="page_body"
3052                 git_footer_html();
3053
3054         } else {
3055                 while (my $line = <$fd>) {
3056                         $line =~ s!a/($hash|$hash_parent)!a/$diffinfo{'from_file'}!g;
3057                         $line =~ s!b/($hash|$hash_parent)!b/$diffinfo{'to_file'}!g;
3058
3059                         print $line;
3060
3061                         last if $line =~ m!^\+\+\+!;
3062                 }
3063                 local $/ = undef;
3064                 print <$fd>;
3065                 close $fd;
3066         }
3067 }
3068
3069 sub git_blobdiff_plain {
3070         git_blobdiff('plain');
3071 }
3072
3073 sub git_commitdiff {
3074         my $format = shift || 'html';
3075         my %co = parse_commit($hash);
3076         if (!%co) {
3077                 die_error(undef, "Unknown commit object");
3078         }
3079         if (!defined $hash_parent) {
3080                 $hash_parent = $co{'parent'} || '--root';
3081         }
3082
3083         # read commitdiff
3084         my $fd;
3085         my @difftree;
3086         if ($format eq 'html') {
3087                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3088                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3089                         or die_error(undef, "Open git-diff-tree failed");
3090
3091                 while (chomp(my $line = <$fd>)) {
3092                         # empty line ends raw part of diff-tree output
3093                         last unless $line;
3094                         push @difftree, $line;
3095                 }
3096
3097         } elsif ($format eq 'plain') {
3098                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3099                         '-p', $hash_parent, $hash
3100                         or die_error(undef, "Open git-diff-tree failed");
3101
3102         } else {
3103                 die_error(undef, "Unknown commitdiff format");
3104         }
3105
3106         # non-textual hash id's can be cached
3107         my $expires;
3108         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3109                 $expires = "+1d";
3110         }
3111
3112         # write commit message
3113         if ($format eq 'html') {
3114                 my $refs = git_get_references();
3115                 my $ref = format_ref_marker($refs, $co{'id'});
3116                 my $formats_nav =
3117                         $cgi->a({-href => href(action=>"commitdiff_plain",
3118                                                hash=>$hash, hash_parent=>$hash_parent)},
3119                                 "plain");
3120
3121                 git_header_html(undef, $expires);
3122                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3123                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3124                 git_print_authorship(\%co);
3125                 print "<div class=\"page_body\">\n";
3126                 print "<div class=\"log\">\n";
3127                 git_print_simplified_log($co{'comment'}, 1); # skip title
3128                 print "</div>\n"; # class="log"
3129
3130         } elsif ($format eq 'plain') {
3131                 my $refs = git_get_references("tags");
3132                 my $tagname = git_get_rev_name_tags($hash);
3133                 my $filename = basename($project) . "-$hash.patch";
3134
3135                 print $cgi->header(
3136                         -type => 'text/plain',
3137                         -charset => 'utf-8',
3138                         -expires => $expires,
3139                         -content_disposition => qq(inline; filename="$filename"));
3140                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3141                 print <<TEXT;
3142 From: $co{'author'}
3143 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3144 Subject: $co{'title'}
3145 TEXT
3146                 print "X-Git-Tag: $tagname\n" if $tagname;
3147                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3148
3149                 foreach my $line (@{$co{'comment'}}) {
3150                         print "$line\n";
3151                 }
3152                 print "---\n\n";
3153         }
3154
3155         # write patch
3156         if ($format eq 'html') {
3157                 git_difftree_body(\@difftree, $hash, $hash_parent);
3158                 print "<br/>\n";
3159
3160                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3161                 close $fd;
3162                 print "</div>\n"; # class="page_body"
3163                 git_footer_html();
3164
3165         } elsif ($format eq 'plain') {
3166                 local $/ = undef;
3167                 print <$fd>;
3168                 close $fd
3169                         or print "Reading git-diff-tree failed\n";
3170         }
3171 }
3172
3173 sub git_commitdiff_plain {
3174         git_commitdiff('plain');
3175 }
3176
3177 sub git_history {
3178         if (!defined $hash_base) {
3179                 $hash_base = git_get_head_hash($project);
3180         }
3181         if (!defined $page) {
3182                 $page = 0;
3183         }
3184         my $ftype;
3185         my %co = parse_commit($hash_base);
3186         if (!%co) {
3187                 die_error(undef, "Unknown commit object");
3188         }
3189
3190         my $refs = git_get_references();
3191         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3192
3193         if (!defined $hash && defined $file_name) {
3194                 $hash = git_get_hash_by_path($hash_base, $file_name);
3195         }
3196         if (defined $hash) {
3197                 $ftype = git_get_type($hash);
3198         }
3199
3200         open my $fd, "-|",
3201                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3202                         or die_error(undef, "Open git-rev-list-failed");
3203         my @revlist = map { chomp; $_ } <$fd>;
3204         close $fd
3205                 or die_error(undef, "Reading git-rev-list failed");
3206
3207         my $paging_nav = '';
3208         if ($page > 0) {
3209                 $paging_nav .=
3210                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3211                                                file_name=>$file_name)},
3212                                 "first");
3213                 $paging_nav .= " &sdot; " .
3214                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3215                                                file_name=>$file_name, page=>$page-1),
3216                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3217         } else {
3218                 $paging_nav .= "first";
3219                 $paging_nav .= " &sdot; prev";
3220         }
3221         if ($#revlist >= (100 * ($page+1)-1)) {
3222                 $paging_nav .= " &sdot; " .
3223                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3224                                                file_name=>$file_name, page=>$page+1),
3225                                  -accesskey => "n", -title => "Alt-n"}, "next");
3226         } else {
3227                 $paging_nav .= " &sdot; next";
3228         }
3229         my $next_link = '';
3230         if ($#revlist >= (100 * ($page+1)-1)) {
3231                 $next_link =
3232                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3233                                                file_name=>$file_name, page=>$page+1),
3234                                  -title => "Alt-n"}, "next");
3235         }
3236
3237         git_header_html();
3238         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3239         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3240         git_print_page_path($file_name, $ftype, $hash_base);
3241
3242         git_history_body(\@revlist, ($page * 100), $#revlist,
3243                          $refs, $hash_base, $ftype, $next_link);
3244
3245         git_footer_html();
3246 }
3247
3248 sub git_search {
3249         if (!defined $searchtext) {
3250                 die_error(undef, "Text field empty");
3251         }
3252         if (!defined $hash) {
3253                 $hash = git_get_head_hash($project);
3254         }
3255         my %co = parse_commit($hash);
3256         if (!%co) {
3257                 die_error(undef, "Unknown commit object");
3258         }
3259
3260         my $commit_search = 1;
3261         my $author_search = 0;
3262         my $committer_search = 0;
3263         my $pickaxe_search = 0;
3264         if ($searchtext =~ s/^author\\://i) {
3265                 $author_search = 1;
3266         } elsif ($searchtext =~ s/^committer\\://i) {
3267                 $committer_search = 1;
3268         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3269                 $commit_search = 0;
3270                 $pickaxe_search = 1;
3271
3272                 # pickaxe may take all resources of your box and run for several minutes
3273                 # with every query - so decide by yourself how public you make this feature
3274                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3275                 if (!$have_pickaxe) {
3276                         die_error('403 Permission denied', "Permission denied");
3277                 }
3278         }
3279         git_header_html();
3280         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3281         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3282
3283         print "<table cellspacing=\"0\">\n";
3284         my $alternate = 0;
3285         if ($commit_search) {
3286                 $/ = "\0";
3287                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3288                 while (my $commit_text = <$fd>) {
3289                         if (!grep m/$searchtext/i, $commit_text) {
3290                                 next;
3291                         }
3292                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3293                                 next;
3294                         }
3295                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3296                                 next;
3297                         }
3298                         my @commit_lines = split "\n", $commit_text;
3299                         my %co = parse_commit(undef, \@commit_lines);
3300                         if (!%co) {
3301                                 next;
3302                         }
3303                         if ($alternate) {
3304                                 print "<tr class=\"dark\">\n";
3305                         } else {
3306                                 print "<tr class=\"light\">\n";
3307                         }
3308                         $alternate ^= 1;
3309                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3310                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3311                               "<td>" .
3312                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3313                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3314                         my $comment = $co{'comment'};
3315                         foreach my $line (@$comment) {
3316                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3317                                         my $lead = esc_html($1) || "";
3318                                         $lead = chop_str($lead, 30, 10);
3319                                         my $match = esc_html($2) || "";
3320                                         my $trail = esc_html($3) || "";
3321                                         $trail = chop_str($trail, 30, 10);
3322                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3323                                         print chop_str($text, 80, 5) . "<br/>\n";
3324                                 }
3325                         }
3326                         print "</td>\n" .
3327                               "<td class=\"link\">" .
3328                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3329                               " | " .
3330                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3331                         print "</td>\n" .
3332                               "</tr>\n";
3333                 }
3334                 close $fd;
3335         }
3336
3337         if ($pickaxe_search) {
3338                 $/ = "\n";
3339                 my $git_command = git_cmd_str();
3340                 open my $fd, "-|", "$git_command rev-list $hash | " .
3341                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3342                 undef %co;
3343                 my @files;
3344                 while (my $line = <$fd>) {
3345                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3346                                 my %set;
3347                                 $set{'file'} = $6;
3348                                 $set{'from_id'} = $3;
3349                                 $set{'to_id'} = $4;
3350                                 $set{'id'} = $set{'to_id'};
3351                                 if ($set{'id'} =~ m/0{40}/) {
3352                                         $set{'id'} = $set{'from_id'};
3353                                 }
3354                                 if ($set{'id'} =~ m/0{40}/) {
3355                                         next;
3356                                 }
3357                                 push @files, \%set;
3358                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3359                                 if (%co) {
3360                                         if ($alternate) {
3361                                                 print "<tr class=\"dark\">\n";
3362                                         } else {
3363                                                 print "<tr class=\"light\">\n";
3364                                         }
3365                                         $alternate ^= 1;
3366                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3367                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3368                                               "<td>" .
3369                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3370                                                       -class => "list subject"},
3371                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3372                                         while (my $setref = shift @files) {
3373                                                 my %set = %$setref;
3374                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3375                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3376                                                               -class => "list"},
3377                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3378                                                       "<br/>\n";
3379                                         }
3380                                         print "</td>\n" .
3381                                               "<td class=\"link\">" .
3382                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3383                                               " | " .
3384                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3385                                         print "</td>\n" .
3386                                               "</tr>\n";
3387                                 }
3388                                 %co = parse_commit($1);
3389                         }
3390                 }
3391                 close $fd;
3392         }
3393         print "</table>\n";
3394         git_footer_html();
3395 }
3396
3397 sub git_shortlog {
3398         my $head = git_get_head_hash($project);
3399         if (!defined $hash) {
3400                 $hash = $head;
3401         }
3402         if (!defined $page) {
3403                 $page = 0;
3404         }
3405         my $refs = git_get_references();
3406
3407         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3408         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3409                 or die_error(undef, "Open git-rev-list failed");
3410         my @revlist = map { chomp; $_ } <$fd>;
3411         close $fd;
3412
3413         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3414         my $next_link = '';
3415         if ($#revlist >= (100 * ($page+1)-1)) {
3416                 $next_link =
3417                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3418                                  -title => "Alt-n"}, "next");
3419         }
3420
3421
3422         git_header_html();
3423         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3424         git_print_header_div('summary', $project);
3425
3426         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3427
3428         git_footer_html();
3429 }
3430
3431 ## ......................................................................
3432 ## feeds (RSS, OPML)
3433
3434 sub git_rss {
3435         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3436         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3437                 or die_error(undef, "Open git-rev-list failed");
3438         my @revlist = map { chomp; $_ } <$fd>;
3439         close $fd or die_error(undef, "Reading git-rev-list failed");
3440         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3441         print <<XML;
3442 <?xml version="1.0" encoding="utf-8"?>
3443 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3444 <channel>
3445 <title>$project $my_uri $my_url</title>
3446 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3447 <description>$project log</description>
3448 <language>en</language>
3449 XML
3450
3451         for (my $i = 0; $i <= $#revlist; $i++) {
3452                 my $commit = $revlist[$i];
3453                 my %co = parse_commit($commit);
3454                 # we read 150, we always show 30 and the ones more recent than 48 hours
3455                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3456                         last;
3457                 }
3458                 my %cd = parse_date($co{'committer_epoch'});
3459                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3460                         $co{'parent'}, $co{'id'}
3461                         or next;
3462                 my @difftree = map { chomp; $_ } <$fd>;
3463                 close $fd
3464                         or next;
3465                 print "<item>\n" .
3466                       "<title>" .
3467                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3468                       "</title>\n" .
3469                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3470                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3471                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3472                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3473                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3474                       "<content:encoded>" .
3475                       "<![CDATA[\n";
3476                 my $comment = $co{'comment'};
3477                 foreach my $line (@$comment) {
3478                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3479                         print "$line<br/>\n";
3480                 }
3481                 print "<br/>\n";
3482                 foreach my $line (@difftree) {
3483                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3484                                 next;
3485                         }
3486                         my $file = validate_input(unquote($7));
3487                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3488                         print "$file<br/>\n";
3489                 }
3490                 print "]]>\n" .
3491                       "</content:encoded>\n" .
3492                       "</item>\n";
3493         }
3494         print "</channel></rss>";
3495 }
3496
3497 sub git_opml {
3498         my @list = git_get_projects_list();
3499
3500         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3501         print <<XML;
3502 <?xml version="1.0" encoding="utf-8"?>
3503 <opml version="1.0">
3504 <head>
3505   <title>$site_name Git OPML Export</title>
3506 </head>
3507 <body>
3508 <outline text="git RSS feeds">
3509 XML
3510
3511         foreach my $pr (@list) {
3512                 my %proj = %$pr;
3513                 my $head = git_get_head_hash($proj{'path'});
3514                 if (!defined $head) {
3515                         next;
3516                 }
3517                 $git_dir = "$projectroot/$proj{'path'}";
3518                 my %co = parse_commit($head);
3519                 if (!%co) {
3520                         next;
3521                 }
3522
3523                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3524                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3525                 my $html = "$my_url?p=$proj{'path'};a=summary";
3526                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3527         }
3528         print <<XML;
3529 </outline>
3530 </body>
3531 </opml>
3532 XML
3533 }