gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  43
  44 # html text to include at home page
  45 our $home_text = "++GITWEB_HOMETEXT++";
  46
  47 # URI of default stylesheet
  48 our $stylesheet = "++GITWEB_CSS++";
  49 # URI of GIT logo
  50 our $logo = "++GITWEB_LOGO++";
  51 # URI of GIT favicon, assumed to be image/png type
  52 our $favicon = "++GITWEB_FAVICON++";
  53
  54 # source of projects list
  55 our $projects_list = "++GITWEB_LIST++";
  56
  57 # show repository only if this file exists
  58 # (only effective if this variable evaluates to true)
  59 our $export_ok = "++GITWEB_EXPORT_OK++";
  60
  61 # only allow viewing of repositories also shown on the overview page
  62 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  63
  64 # list of git base URLs used for URL to where fetch project from,
  65 # i.e. full URL is "$git_base_url/$project"
  66 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  67
  68 # default blob_plain mimetype and default charset for text/plain blob
  69 our $default_blob_plain_mimetype = 'text/plain';
  70 our $default_text_plain_charset  = undef;
  71
  72 # file to use for guessing MIME types before trying /etc/mime.types
  73 # (relative to the current git repository)
  74 our $mimetypes_file = undef;
  75
  76 # You define site-wide feature defaults here; override them with
  77 # $GITWEB_CONFIG as necessary.
  78 our %feature = (
  79         # feature => {
  80         #       'sub' => feature-sub (subroutine),
  81         #       'override' => allow-override (boolean),
  82         #       'default' => [ default options...] (array reference)}
  83         #
  84         # if feature is overridable (it means that allow-override has true value,
  85         # then feature-sub will be called with default options as parameters;
  86         # return value of feature-sub indicates if to enable specified feature
  87         #
  88         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  89
  90         'blame' => {
  91                 'sub' => \&feature_blame,
  92                 'override' => 0,
  93                 'default' => [0]},
  94
  95         'snapshot' => {
  96                 'sub' => \&feature_snapshot,
  97                 'override' => 0,
  98                 #         => [content-encoding, suffix, program]
  99                 'default' => ['x-gzip', 'gz', 'gzip']},
 100
 101         'pickaxe' => {
 102                 'sub' => \&feature_pickaxe,
 103                 'override' => 0,
 104                 'default' => [1]},
 105 );
 106
 107 sub gitweb_check_feature {
 108         my ($name) = @_;
 109         return undef unless exists $feature{$name};
 110         my ($sub, $override, @defaults) = (
 111                 $feature{$name}{'sub'},
 112                 $feature{$name}{'override'},
 113                 @{$feature{$name}{'default'}});
 114         if (!$override) { return @defaults; }
 115         return $sub->(@defaults);
 116 }
 117
 118 # To enable system wide have in $GITWEB_CONFIG
 119 # $feature{'blame'}{'default'} = [1];
 120 # To have project specific config enable override in $GITWEB_CONFIG
 121 # $feature{'blame'}{'override'} = 1;
 122 # and in project config gitweb.blame = 0|1;
 123
 124 sub feature_blame {
 125         my ($val) = git_get_project_config('blame', '--bool');
 126
 127         if ($val eq 'true') {
 128                 return 1;
 129         } elsif ($val eq 'false') {
 130                 return 0;
 131         }
 132
 133         return $_[0];
 134 }
 135
 136 # To disable system wide have in $GITWEB_CONFIG
 137 # $feature{'snapshot'}{'default'} = [undef];
 138 # To have project specific config enable override in $GITWEB_CONFIG
 139 # $feature{'blame'}{'override'} = 1;
 140 # and in project config  gitweb.snapshot = none|gzip|bzip2
 141
 142 sub feature_snapshot {
 143         my ($ctype, $suffix, $command) = @_;
 144
 145         my ($val) = git_get_project_config('snapshot');
 146
 147         if ($val eq 'gzip') {
 148                 return ('x-gzip', 'gz', 'gzip');
 149         } elsif ($val eq 'bzip2') {
 150                 return ('x-bzip2', 'bz2', 'bzip2');
 151         } elsif ($val eq 'none') {
 152                 return ();
 153         }
 154
 155         return ($ctype, $suffix, $command);
 156 }
 157
 158 # To enable system wide have in $GITWEB_CONFIG
 159 # $feature{'pickaxe'}{'default'} = [1];
 160 # To have project specific config enable override in $GITWEB_CONFIG
 161 # $feature{'pickaxe'}{'override'} = 1;
 162 # and in project config gitweb.pickaxe = 0|1;
 163
 164 sub feature_pickaxe {
 165         my ($val) = git_get_project_config('pickaxe', '--bool');
 166
 167         if ($val eq 'true') {
 168                 return (1);
 169         } elsif ($val eq 'false') {
 170                 return (0);
 171         }
 172
 173         return ($_[0]);
 174 }
 175
 176 # rename detection options for git-diff and git-diff-tree
 177 # - default is '-M', with the cost proportional to
 178 #   (number of removed files) * (number of new files).
 179 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 180 #   (number of changed files + number of removed files) * (number of new files)
 181 # - even more costly is '-C', '--find-copies-harder' with cost
 182 #   (number of files in the original tree) * (number of new files)
 183 # - one might want to include '-B' option, e.g. '-B', '-M'
 184 our @diff_opts = ('-M'); # taken from git_commit
 185
 186 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 187 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 188
 189 # version of the core git binary
 190 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 191
 192 # path to the current git repository
 193 our $git_dir;
 194
 195 $projects_list ||= $projectroot;
 196
 197 # ======================================================================
 198 # input validation and dispatch
 199 our $action = $cgi->param('a');
 200 if (defined $action) {
 201         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 202                 die_error(undef, "Invalid action parameter");
 203         }
 204 }
 205
 206 our $project = $cgi->param('p');
 207 if (defined $project) {
 208         if (!validate_input($project) ||
 209             !(-d "$projectroot/$project") ||
 210             !(-e "$projectroot/$project/HEAD") ||
 211             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 212             ($strict_export && !project_in_list($project))) {
 213                 undef $project;
 214                 die_error(undef, "No such project");
 215         }
 216 }
 217
 218 our $file_name = $cgi->param('f');
 219 if (defined $file_name) {
 220         if (!validate_input($file_name)) {
 221                 die_error(undef, "Invalid file parameter");
 222         }
 223 }
 224
 225 our $file_parent = $cgi->param('fp');
 226 if (defined $file_parent) {
 227         if (!validate_input($file_parent)) {
 228                 die_error(undef, "Invalid file parent parameter");
 229         }
 230 }
 231
 232 our $hash = $cgi->param('h');
 233 if (defined $hash) {
 234         if (!validate_input($hash)) {
 235                 die_error(undef, "Invalid hash parameter");
 236         }
 237 }
 238
 239 our $hash_parent = $cgi->param('hp');
 240 if (defined $hash_parent) {
 241         if (!validate_input($hash_parent)) {
 242                 die_error(undef, "Invalid hash parent parameter");
 243         }
 244 }
 245
 246 our $hash_base = $cgi->param('hb');
 247 if (defined $hash_base) {
 248         if (!validate_input($hash_base)) {
 249                 die_error(undef, "Invalid hash base parameter");
 250         }
 251 }
 252
 253 our $hash_parent_base = $cgi->param('hpb');
 254 if (defined $hash_parent_base) {
 255         if (!validate_input($hash_parent_base)) {
 256                 die_error(undef, "Invalid hash parent base parameter");
 257         }
 258 }
 259
 260 our $page = $cgi->param('pg');
 261 if (defined $page) {
 262         if ($page =~ m/[^0-9]$/) {
 263                 die_error(undef, "Invalid page parameter");
 264         }
 265 }
 266
 267 our $searchtext = $cgi->param('s');
 268 if (defined $searchtext) {
 269         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 270                 die_error(undef, "Invalid search parameter");
 271         }
 272         $searchtext = quotemeta $searchtext;
 273 }
 274
 275 # now read PATH_INFO and use it as alternative to parameters
 276 our $path_info = $ENV{"PATH_INFO"};
 277 $path_info =~ s|^/||;
 278 $path_info =~ s|/$||;
 279 if (validate_input($path_info) && !defined $project) {
 280         $project = $path_info;
 281         while ($project && !-e "$projectroot/$project/HEAD") {
 282                 $project =~ s,/*[^/]*$,,;
 283         }
 284         if (defined $project) {
 285                 $project = undef unless $project;
 286         }
 287         if ($path_info =~ m,^$project/([^/]+)/(.+)$,) {
 288                 # we got "project.git/branch/filename"
 289                 $action    ||= "blob_plain";
 290                 $hash_base ||= $1;
 291                 $file_name ||= $2;
 292         } elsif ($path_info =~ m,^$project/([^/]+)$,) {
 293                 # we got "project.git/branch"
 294                 $action ||= "shortlog";
 295                 $hash   ||= $1;
 296         }
 297 }
 298
 299 $git_dir = "$projectroot/$project";
 300
 301 # dispatch
 302 my %actions = (
 303         "blame" => \&git_blame2,
 304         "blobdiff" => \&git_blobdiff,
 305         "blobdiff_plain" => \&git_blobdiff_plain,
 306         "blob" => \&git_blob,
 307         "blob_plain" => \&git_blob_plain,
 308         "commitdiff" => \&git_commitdiff,
 309         "commitdiff_plain" => \&git_commitdiff_plain,
 310         "commit" => \&git_commit,
 311         "heads" => \&git_heads,
 312         "history" => \&git_history,
 313         "log" => \&git_log,
 314         "rss" => \&git_rss,
 315         "search" => \&git_search,
 316         "shortlog" => \&git_shortlog,
 317         "summary" => \&git_summary,
 318         "tag" => \&git_tag,
 319         "tags" => \&git_tags,
 320         "tree" => \&git_tree,
 321         "snapshot" => \&git_snapshot,
 322         # those below don't need $project
 323         "opml" => \&git_opml,
 324         "project_list" => \&git_project_list,
 325         "project_index" => \&git_project_index,
 326 );
 327
 328 if (defined $project) {
 329         $action ||= 'summary';
 330 } else {
 331         $action ||= 'project_list';
 332 }
 333 if (!defined($actions{$action})) {
 334         die_error(undef, "Unknown action");
 335 }
 336 $actions{$action}->();
 337 exit;
 338
 339 ## ======================================================================
 340 ## action links
 341
 342 sub href(%) {
 343         my %params = @_;
 344
 345         my @mapping = (
 346                 project => "p",
 347                 action => "a",
 348                 file_name => "f",
 349                 file_parent => "fp",
 350                 hash => "h",
 351                 hash_parent => "hp",
 352                 hash_base => "hb",
 353                 hash_parent_base => "hpb",
 354                 page => "pg",
 355                 order => "o",
 356                 searchtext => "s",
 357         );
 358         my %mapping = @mapping;
 359
 360         $params{'project'} = $project unless exists $params{'project'};
 361
 362         my @result = ();
 363         for (my $i = 0; $i < @mapping; $i += 2) {
 364                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 365                 if (defined $params{$name}) {
 366                         push @result, $symbol . "=" . esc_param($params{$name});
 367                 }
 368         }
 369         return "$my_uri?" . join(';', @result);
 370 }
 371
 372
 373 ## ======================================================================
 374 ## validation, quoting/unquoting and escaping
 375
 376 sub validate_input {
 377         my $input = shift;
 378
 379         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 380                 return $input;
 381         }
 382         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 383                 return undef;
 384         }
 385         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 386                 return undef;
 387         }
 388         return $input;
 389 }
 390
 391 # quote unsafe chars, but keep the slash, even when it's not
 392 # correct, but quoted slashes look too horrible in bookmarks
 393 sub esc_param {
 394         my $str = shift;
 395         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 396         $str =~ s/\+/%2B/g;
 397         $str =~ s/ /\+/g;
 398         return $str;
 399 }
 400
 401 # replace invalid utf8 character with SUBSTITUTION sequence
 402 sub esc_html {
 403         my $str = shift;
 404         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 405         $str = escapeHTML($str);
 406         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 407         return $str;
 408 }
 409
 410 # git may return quoted and escaped filenames
 411 sub unquote {
 412         my $str = shift;
 413         if ($str =~ m/^"(.*)"$/) {
 414                 $str = $1;
 415                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 416         }
 417         return $str;
 418 }
 419
 420 # escape tabs (convert tabs to spaces)
 421 sub untabify {
 422         my $line = shift;
 423
 424         while ((my $pos = index($line, "\t")) != -1) {
 425                 if (my $count = (8 - ($pos % 8))) {
 426                         my $spaces = ' ' x $count;
 427                         $line =~ s/\t/$spaces/;
 428                 }
 429         }
 430
 431         return $line;
 432 }
 433
 434 sub project_in_list {
 435         my $project = shift;
 436         my @list = git_get_projects_list();
 437         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 438 }
 439
 440 ## ----------------------------------------------------------------------
 441 ## HTML aware string manipulation
 442
 443 sub chop_str {
 444         my $str = shift;
 445         my $len = shift;
 446         my $add_len = shift || 10;
 447
 448         # allow only $len chars, but don't cut a word if it would fit in $add_len
 449         # if it doesn't fit, cut it if it's still longer than the dots we would add
 450         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 451         my $body = $1;
 452         my $tail = $2;
 453         if (length($tail) > 4) {
 454                 $tail = " ...";
 455                 $body =~ s/&[^;]*$//; # remove chopped character entities
 456         }
 457         return "$body$tail";
 458 }
 459
 460 ## ----------------------------------------------------------------------
 461 ## functions returning short strings
 462
 463 # CSS class for given age value (in seconds)
 464 sub age_class {
 465         my $age = shift;
 466
 467         if ($age < 60*60*2) {
 468                 return "age0";
 469         } elsif ($age < 60*60*24*2) {
 470                 return "age1";
 471         } else {
 472                 return "age2";
 473         }
 474 }
 475
 476 # convert age in seconds to "nn units ago" string
 477 sub age_string {
 478         my $age = shift;
 479         my $age_str;
 480
 481         if ($age > 60*60*24*365*2) {
 482                 $age_str = (int $age/60/60/24/365);
 483                 $age_str .= " years ago";
 484         } elsif ($age > 60*60*24*(365/12)*2) {
 485                 $age_str = int $age/60/60/24/(365/12);
 486                 $age_str .= " months ago";
 487         } elsif ($age > 60*60*24*7*2) {
 488                 $age_str = int $age/60/60/24/7;
 489                 $age_str .= " weeks ago";
 490         } elsif ($age > 60*60*24*2) {
 491                 $age_str = int $age/60/60/24;
 492                 $age_str .= " days ago";
 493         } elsif ($age > 60*60*2) {
 494                 $age_str = int $age/60/60;
 495                 $age_str .= " hours ago";
 496         } elsif ($age > 60*2) {
 497                 $age_str = int $age/60;
 498                 $age_str .= " min ago";
 499         } elsif ($age > 2) {
 500                 $age_str = int $age;
 501                 $age_str .= " sec ago";
 502         } else {
 503                 $age_str .= " right now";
 504         }
 505         return $age_str;
 506 }
 507
 508 # convert file mode in octal to symbolic file mode string
 509 sub mode_str {
 510         my $mode = oct shift;
 511
 512         if (S_ISDIR($mode & S_IFMT)) {
 513                 return 'drwxr-xr-x';
 514         } elsif (S_ISLNK($mode)) {
 515                 return 'lrwxrwxrwx';
 516         } elsif (S_ISREG($mode)) {
 517                 # git cares only about the executable bit
 518                 if ($mode & S_IXUSR) {
 519                         return '-rwxr-xr-x';
 520                 } else {
 521                         return '-rw-r--r--';
 522                 };
 523         } else {
 524                 return '----------';
 525         }
 526 }
 527
 528 # convert file mode in octal to file type string
 529 sub file_type {
 530         my $mode = shift;
 531
 532         if ($mode !~ m/^[0-7]+$/) {
 533                 return $mode;
 534         } else {
 535                 $mode = oct $mode;
 536         }
 537
 538         if (S_ISDIR($mode & S_IFMT)) {
 539                 return "directory";
 540         } elsif (S_ISLNK($mode)) {
 541                 return "symlink";
 542         } elsif (S_ISREG($mode)) {
 543                 return "file";
 544         } else {
 545                 return "unknown";
 546         }
 547 }
 548
 549 ## ----------------------------------------------------------------------
 550 ## functions returning short HTML fragments, or transforming HTML fragments
 551 ## which don't beling to other sections
 552
 553 # format line of commit message or tag comment
 554 sub format_log_line_html {
 555         my $line = shift;
 556
 557         $line = esc_html($line);
 558         $line =~ s/ /&nbsp;/g;
 559         if ($line =~ m/([0-9a-fA-F]{40})/) {
 560                 my $hash_text = $1;
 561                 if (git_get_type($hash_text) eq "commit") {
 562                         my $link =
 563                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 564                                         -class => "text"}, $hash_text);
 565                         $line =~ s/$hash_text/$link/;
 566                 }
 567         }
 568         return $line;
 569 }
 570
 571 # format marker of refs pointing to given object
 572 sub format_ref_marker {
 573         my ($refs, $id) = @_;
 574         my $markers = '';
 575
 576         if (defined $refs->{$id}) {
 577                 foreach my $ref (@{$refs->{$id}}) {
 578                         my ($type, $name) = qw();
 579                         # e.g. tags/v2.6.11 or heads/next
 580                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 581                                 $type = $1;
 582                                 $name = $2;
 583                         } else {
 584                                 $type = "ref";
 585                                 $name = $ref;
 586                         }
 587
 588                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 589                 }
 590         }
 591
 592         if ($markers) {
 593                 return ' <span class="refs">'. $markers . '</span>';
 594         } else {
 595                 return "";
 596         }
 597 }
 598
 599 # format, perhaps shortened and with markers, title line
 600 sub format_subject_html {
 601         my ($long, $short, $href, $extra) = @_;
 602         $extra = '' unless defined($extra);
 603
 604         if (length($short) < length($long)) {
 605                 return $cgi->a({-href => $href, -class => "list subject",
 606                                 -title => $long},
 607                        esc_html($short) . $extra);
 608         } else {
 609                 return $cgi->a({-href => $href, -class => "list subject"},
 610                        esc_html($long)  . $extra);
 611         }
 612 }
 613
 614 sub format_diff_line {
 615         my $line = shift;
 616         my $char = substr($line, 0, 1);
 617         my $diff_class = "";
 618
 619         chomp $line;
 620
 621         if ($char eq '+') {
 622                 $diff_class = " add";
 623         } elsif ($char eq "-") {
 624                 $diff_class = " rem";
 625         } elsif ($char eq "@") {
 626                 $diff_class = " chunk_header";
 627         } elsif ($char eq "\\") {
 628                 $diff_class = " incomplete";
 629         }
 630         $line = untabify($line);
 631         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 632 }
 633
 634 ## ----------------------------------------------------------------------
 635 ## git utility subroutines, invoking git commands
 636
 637 # returns path to the core git executable and the --git-dir parameter as list
 638 sub git_cmd {
 639         return $GIT, '--git-dir='.$git_dir;
 640 }
 641
 642 # returns path to the core git executable and the --git-dir parameter as string
 643 sub git_cmd_str {
 644         return join(' ', git_cmd());
 645 }
 646
 647 # get HEAD ref of given project as hash
 648 sub git_get_head_hash {
 649         my $project = shift;
 650         my $o_git_dir = $git_dir;
 651         my $retval = undef;
 652         $git_dir = "$projectroot/$project";
 653         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 654                 my $head = <$fd>;
 655                 close $fd;
 656                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 657                         $retval = $1;
 658                 }
 659         }
 660         if (defined $o_git_dir) {
 661                 $git_dir = $o_git_dir;
 662         }
 663         return $retval;
 664 }
 665
 666 # get type of given object
 667 sub git_get_type {
 668         my $hash = shift;
 669
 670         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 671         my $type = <$fd>;
 672         close $fd or return;
 673         chomp $type;
 674         return $type;
 675 }
 676
 677 sub git_get_project_config {
 678         my ($key, $type) = @_;
 679
 680         return unless ($key);
 681         $key =~ s/^gitweb\.//;
 682         return if ($key =~ m/\W/);
 683
 684         my @x = (git_cmd(), 'repo-config');
 685         if (defined $type) { push @x, $type; }
 686         push @x, "--get";
 687         push @x, "gitweb.$key";
 688         my $val = qx(@x);
 689         chomp $val;
 690         return ($val);
 691 }
 692
 693 # get hash of given path at given ref
 694 sub git_get_hash_by_path {
 695         my $base = shift;
 696         my $path = shift || return undef;
 697
 698         my $tree = $base;
 699
 700         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 701                 or die_error(undef, "Open git-ls-tree failed");
 702         my $line = <$fd>;
 703         close $fd or return undef;
 704
 705         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 706         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 707         return $3;
 708 }
 709
 710 ## ......................................................................
 711 ## git utility functions, directly accessing git repository
 712
 713 sub git_get_project_description {
 714         my $path = shift;
 715
 716         open my $fd, "$projectroot/$path/description" or return undef;
 717         my $descr = <$fd>;
 718         close $fd;
 719         chomp $descr;
 720         return $descr;
 721 }
 722
 723 sub git_get_project_url_list {
 724         my $path = shift;
 725
 726         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 727         my @git_project_url_list = map { chomp; $_ } <$fd>;
 728         close $fd;
 729
 730         return wantarray ? @git_project_url_list : \@git_project_url_list;
 731 }
 732
 733 sub git_get_projects_list {
 734         my @list;
 735
 736         if (-d $projects_list) {
 737                 # search in directory
 738                 my $dir = $projects_list;
 739                 my $pfxlen = length("$dir");
 740
 741                 File::Find::find({
 742                         follow_fast => 1, # follow symbolic links
 743                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 744                         wanted => sub {
 745                                 # skip project-list toplevel, if we get it.
 746                                 return if (m!^[/.]$!);
 747                                 # only directories can be git repositories
 748                                 return unless (-d $_);
 749
 750                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 751                                 # we check related file in $projectroot
 752                                 if (-e "$projectroot/$subdir/HEAD" && (!$export_ok ||
 753                                     -e "$projectroot/$subdir/$export_ok")) {
 754                                         push @list, { path => $subdir };
 755                                         $File::Find::prune = 1;
 756                                 }
 757                         },
 758                 }, "$dir");
 759
 760         } elsif (-f $projects_list) {
 761                 # read from file(url-encoded):
 762                 # 'git%2Fgit.git Linus+Torvalds'
 763                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 764                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 765                 open my ($fd), $projects_list or return undef;
 766                 while (my $line = <$fd>) {
 767                         chomp $line;
 768                         my ($path, $owner) = split ' ', $line;
 769                         $path = unescape($path);
 770                         $owner = unescape($owner);
 771                         if (!defined $path) {
 772                                 next;
 773                         }
 774                         if (-e "$projectroot/$path/HEAD" && (!$export_ok ||
 775                             -e "$projectroot/$path/$export_ok")) {
 776                                 my $pr = {
 777                                         path => $path,
 778                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 779                                 };
 780                                 push @list, $pr
 781                         }
 782                 }
 783                 close $fd;
 784         }
 785         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 786         return @list;
 787 }
 788
 789 sub git_get_project_owner {
 790         my $project = shift;
 791         my $owner;
 792
 793         return undef unless $project;
 794
 795         # read from file (url-encoded):
 796         # 'git%2Fgit.git Linus+Torvalds'
 797         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 798         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 799         if (-f $projects_list) {
 800                 open (my $fd , $projects_list);
 801                 while (my $line = <$fd>) {
 802                         chomp $line;
 803                         my ($pr, $ow) = split ' ', $line;
 804                         $pr = unescape($pr);
 805                         $ow = unescape($ow);
 806                         if ($pr eq $project) {
 807                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 808                                 last;
 809                         }
 810                 }
 811                 close $fd;
 812         }
 813         if (!defined $owner) {
 814                 $owner = get_file_owner("$projectroot/$project");
 815         }
 816
 817         return $owner;
 818 }
 819
 820 sub git_get_references {
 821         my $type = shift || "";
 822         my %refs;
 823         my $fd;
 824         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 825         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 826         if (-f "$projectroot/$project/info/refs") {
 827                 open $fd, "$projectroot/$project/info/refs"
 828                         or return;
 829         } else {
 830                 open $fd, "-|", git_cmd(), "ls-remote", "."
 831                         or return;
 832         }
 833
 834         while (my $line = <$fd>) {
 835                 chomp $line;
 836                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 837                         if (defined $refs{$1}) {
 838                                 push @{$refs{$1}}, $2;
 839                         } else {
 840                                 $refs{$1} = [ $2 ];
 841                         }
 842                 }
 843         }
 844         close $fd or return;
 845         return \%refs;
 846 }
 847
 848 sub git_get_rev_name_tags {
 849         my $hash = shift || return undef;
 850
 851         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 852                 or return;
 853         my $name_rev = <$fd>;
 854         close $fd;
 855
 856         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 857                 return $1;
 858         } else {
 859                 # catches also '$hash undefined' output
 860                 return undef;
 861         }
 862 }
 863
 864 ## ----------------------------------------------------------------------
 865 ## parse to hash functions
 866
 867 sub parse_date {
 868         my $epoch = shift;
 869         my $tz = shift || "-0000";
 870
 871         my %date;
 872         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 873         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 874         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 875         $date{'hour'} = $hour;
 876         $date{'minute'} = $min;
 877         $date{'mday'} = $mday;
 878         $date{'day'} = $days[$wday];
 879         $date{'month'} = $months[$mon];
 880         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 881                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 882         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 883                              $mday, $months[$mon], $hour ,$min;
 884
 885         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 886         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 887         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 888         $date{'hour_local'} = $hour;
 889         $date{'minute_local'} = $min;
 890         $date{'tz_local'} = $tz;
 891         return %date;
 892 }
 893
 894 sub parse_tag {
 895         my $tag_id = shift;
 896         my %tag;
 897         my @comment;
 898
 899         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 900         $tag{'id'} = $tag_id;
 901         while (my $line = <$fd>) {
 902                 chomp $line;
 903                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 904                         $tag{'object'} = $1;
 905                 } elsif ($line =~ m/^type (.+)$/) {
 906                         $tag{'type'} = $1;
 907                 } elsif ($line =~ m/^tag (.+)$/) {
 908                         $tag{'name'} = $1;
 909                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 910                         $tag{'author'} = $1;
 911                         $tag{'epoch'} = $2;
 912                         $tag{'tz'} = $3;
 913                 } elsif ($line =~ m/--BEGIN/) {
 914                         push @comment, $line;
 915                         last;
 916                 } elsif ($line eq "") {
 917                         last;
 918                 }
 919         }
 920         push @comment, <$fd>;
 921         $tag{'comment'} = \@comment;
 922         close $fd or return;
 923         if (!defined $tag{'name'}) {
 924                 return
 925         };
 926         return %tag
 927 }
 928
 929 sub parse_commit {
 930         my $commit_id = shift;
 931         my $commit_text = shift;
 932
 933         my @commit_lines;
 934         my %co;
 935
 936         if (defined $commit_text) {
 937                 @commit_lines = @$commit_text;
 938         } else {
 939                 $/ = "\0";
 940                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
 941                         or return;
 942                 @commit_lines = split '\n', <$fd>;
 943                 close $fd or return;
 944                 $/ = "\n";
 945                 pop @commit_lines;
 946         }
 947         my $header = shift @commit_lines;
 948         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 949                 return;
 950         }
 951         ($co{'id'}, my @parents) = split ' ', $header;
 952         $co{'parents'} = \@parents;
 953         $co{'parent'} = $parents[0];
 954         while (my $line = shift @commit_lines) {
 955                 last if $line eq "\n";
 956                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 957                         $co{'tree'} = $1;
 958                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 959                         $co{'author'} = $1;
 960                         $co{'author_epoch'} = $2;
 961                         $co{'author_tz'} = $3;
 962                         if ($co{'author'} =~ m/^([^<]+) </) {
 963                                 $co{'author_name'} = $1;
 964                         } else {
 965                                 $co{'author_name'} = $co{'author'};
 966                         }
 967                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 968                         $co{'committer'} = $1;
 969                         $co{'committer_epoch'} = $2;
 970                         $co{'committer_tz'} = $3;
 971                         $co{'committer_name'} = $co{'committer'};
 972                         $co{'committer_name'} =~ s/ <.*//;
 973                 }
 974         }
 975         if (!defined $co{'tree'}) {
 976                 return;
 977         };
 978
 979         foreach my $title (@commit_lines) {
 980                 $title =~ s/^    //;
 981                 if ($title ne "") {
 982                         $co{'title'} = chop_str($title, 80, 5);
 983                         # remove leading stuff of merges to make the interesting part visible
 984                         if (length($title) > 50) {
 985                                 $title =~ s/^Automatic //;
 986                                 $title =~ s/^merge (of|with) /Merge ... /i;
 987                                 if (length($title) > 50) {
 988                                         $title =~ s/(http|rsync):\/\///;
 989                                 }
 990                                 if (length($title) > 50) {
 991                                         $title =~ s/(master|www|rsync)\.//;
 992                                 }
 993                                 if (length($title) > 50) {
 994                                         $title =~ s/kernel.org:?//;
 995                                 }
 996                                 if (length($title) > 50) {
 997                                         $title =~ s/\/pub\/scm//;
 998                                 }
 999                         }
1000                         $co{'title_short'} = chop_str($title, 50, 5);
1001                         last;
1002                 }
1003         }
1004         # remove added spaces
1005         foreach my $line (@commit_lines) {
1006                 $line =~ s/^    //;
1007         }
1008         $co{'comment'} = \@commit_lines;
1009
1010         my $age = time - $co{'committer_epoch'};
1011         $co{'age'} = $age;
1012         $co{'age_string'} = age_string($age);
1013         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1014         if ($age > 60*60*24*7*2) {
1015                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1016                 $co{'age_string_age'} = $co{'age_string'};
1017         } else {
1018                 $co{'age_string_date'} = $co{'age_string'};
1019                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1020         }
1021         return %co;
1022 }
1023
1024 # parse ref from ref_file, given by ref_id, with given type
1025 sub parse_ref {
1026         my $ref_file = shift;
1027         my $ref_id = shift;
1028         my $type = shift || git_get_type($ref_id);
1029         my %ref_item;
1030
1031         $ref_item{'type'} = $type;
1032         $ref_item{'id'} = $ref_id;
1033         $ref_item{'epoch'} = 0;
1034         $ref_item{'age'} = "unknown";
1035         if ($type eq "tag") {
1036                 my %tag = parse_tag($ref_id);
1037                 $ref_item{'comment'} = $tag{'comment'};
1038                 if ($tag{'type'} eq "commit") {
1039                         my %co = parse_commit($tag{'object'});
1040                         $ref_item{'epoch'} = $co{'committer_epoch'};
1041                         $ref_item{'age'} = $co{'age_string'};
1042                 } elsif (defined($tag{'epoch'})) {
1043                         my $age = time - $tag{'epoch'};
1044                         $ref_item{'epoch'} = $tag{'epoch'};
1045                         $ref_item{'age'} = age_string($age);
1046                 }
1047                 $ref_item{'reftype'} = $tag{'type'};
1048                 $ref_item{'name'} = $tag{'name'};
1049                 $ref_item{'refid'} = $tag{'object'};
1050         } elsif ($type eq "commit"){
1051                 my %co = parse_commit($ref_id);
1052                 $ref_item{'reftype'} = "commit";
1053                 $ref_item{'name'} = $ref_file;
1054                 $ref_item{'title'} = $co{'title'};
1055                 $ref_item{'refid'} = $ref_id;
1056                 $ref_item{'epoch'} = $co{'committer_epoch'};
1057                 $ref_item{'age'} = $co{'age_string'};
1058         } else {
1059                 $ref_item{'reftype'} = $type;
1060                 $ref_item{'name'} = $ref_file;
1061                 $ref_item{'refid'} = $ref_id;
1062         }
1063
1064         return %ref_item;
1065 }
1066
1067 # parse line of git-diff-tree "raw" output
1068 sub parse_difftree_raw_line {
1069         my $line = shift;
1070         my %res;
1071
1072         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1073         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1074         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1075                 $res{'from_mode'} = $1;
1076                 $res{'to_mode'} = $2;
1077                 $res{'from_id'} = $3;
1078                 $res{'to_id'} = $4;
1079                 $res{'status'} = $5;
1080                 $res{'similarity'} = $6;
1081                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1082                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1083                 } else {
1084                         $res{'file'} = unquote($7);
1085                 }
1086         }
1087         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1088         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1089                 $res{'commit'} = $1;
1090         }
1091
1092         return wantarray ? %res : \%res;
1093 }
1094
1095 # parse line of git-ls-tree output
1096 sub parse_ls_tree_line ($;%) {
1097         my $line = shift;
1098         my %opts = @_;
1099         my %res;
1100
1101         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1102         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1103
1104         $res{'mode'} = $1;
1105         $res{'type'} = $2;
1106         $res{'hash'} = $3;
1107         if ($opts{'-z'}) {
1108                 $res{'name'} = $4;
1109         } else {
1110                 $res{'name'} = unquote($4);
1111         }
1112
1113         return wantarray ? %res : \%res;
1114 }
1115
1116 ## ......................................................................
1117 ## parse to array of hashes functions
1118
1119 sub git_get_refs_list {
1120         my $ref_dir = shift;
1121         my @reflist;
1122
1123         my @refs;
1124         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1125                 or return;
1126         while (my $line = <$fd>) {
1127                 chomp $line;
1128                 if ($line =~ m/^([0-9a-fA-F]{40})\t$ref_dir\/?([^\^]+)$/) {
1129                         push @refs, { hash => $1, name => $2 };
1130                 } elsif ($line =~ m/^[0-9a-fA-F]{40}\t$ref_dir\/?(.*)\^\{\}$/ &&
1131                          $1 eq $refs[-1]{'name'}) {
1132                         # most likely a tag is followed by its peeled
1133                         # (deref) one, and when that happens we know the
1134                         # previous one was of type 'tag'.
1135                         $refs[-1]{'type'} = "tag";
1136                 }
1137         }
1138         close $fd;
1139
1140         foreach my $ref (@refs) {
1141                 my $ref_file = $ref->{'name'};
1142                 my $ref_id   = $ref->{'hash'};
1143
1144                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1145                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1146
1147                 push @reflist, \%ref_item;
1148         }
1149         # sort refs by age
1150         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1151         return \@reflist;
1152 }
1153
1154 ## ----------------------------------------------------------------------
1155 ## filesystem-related functions
1156
1157 sub get_file_owner {
1158         my $path = shift;
1159
1160         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1161         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1162         if (!defined $gcos) {
1163                 return undef;
1164         }
1165         my $owner = $gcos;
1166         $owner =~ s/[,;].*$//;
1167         return decode("utf8", $owner, Encode::FB_DEFAULT);
1168 }
1169
1170 ## ......................................................................
1171 ## mimetype related functions
1172
1173 sub mimetype_guess_file {
1174         my $filename = shift;
1175         my $mimemap = shift;
1176         -r $mimemap or return undef;
1177
1178         my %mimemap;
1179         open(MIME, $mimemap) or return undef;
1180         while (<MIME>) {
1181                 next if m/^#/; # skip comments
1182                 my ($mime, $exts) = split(/\t+/);
1183                 if (defined $exts) {
1184                         my @exts = split(/\s+/, $exts);
1185                         foreach my $ext (@exts) {
1186                                 $mimemap{$ext} = $mime;
1187                         }
1188                 }
1189         }
1190         close(MIME);
1191
1192         $filename =~ /\.(.*?)$/;
1193         return $mimemap{$1};
1194 }
1195
1196 sub mimetype_guess {
1197         my $filename = shift;
1198         my $mime;
1199         $filename =~ /\./ or return undef;
1200
1201         if ($mimetypes_file) {
1202                 my $file = $mimetypes_file;
1203                 if ($file !~ m!^/!) { # if it is relative path
1204                         # it is relative to project
1205                         $file = "$projectroot/$project/$file";
1206                 }
1207                 $mime = mimetype_guess_file($filename, $file);
1208         }
1209         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1210         return $mime;
1211 }
1212
1213 sub blob_mimetype {
1214         my $fd = shift;
1215         my $filename = shift;
1216
1217         if ($filename) {
1218                 my $mime = mimetype_guess($filename);
1219                 $mime and return $mime;
1220         }
1221
1222         # just in case
1223         return $default_blob_plain_mimetype unless $fd;
1224
1225         if (-T $fd) {
1226                 return 'text/plain' .
1227                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1228         } elsif (! $filename) {
1229                 return 'application/octet-stream';
1230         } elsif ($filename =~ m/\.png$/i) {
1231                 return 'image/png';
1232         } elsif ($filename =~ m/\.gif$/i) {
1233                 return 'image/gif';
1234         } elsif ($filename =~ m/\.jpe?g$/i) {
1235                 return 'image/jpeg';
1236         } else {
1237                 return 'application/octet-stream';
1238         }
1239 }
1240
1241 ## ======================================================================
1242 ## functions printing HTML: header, footer, error page
1243
1244 sub git_header_html {
1245         my $status = shift || "200 OK";
1246         my $expires = shift;
1247
1248         my $title = "$site_name git";
1249         if (defined $project) {
1250                 $title .= " - $project";
1251                 if (defined $action) {
1252                         $title .= "/$action";
1253                         if (defined $file_name) {
1254                                 $title .= " - $file_name";
1255                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1256                                         $title .= "/";
1257                                 }
1258                         }
1259                 }
1260         }
1261         my $content_type;
1262         # require explicit support from the UA if we are to send the page as
1263         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1264         # we have to do this because MSIE sometimes globs '*/*', pretending to
1265         # support xhtml+xml but choking when it gets what it asked for.
1266         if (defined $cgi->http('HTTP_ACCEPT') &&
1267             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1268             $cgi->Accept('application/xhtml+xml') != 0) {
1269                 $content_type = 'application/xhtml+xml';
1270         } else {
1271                 $content_type = 'text/html';
1272         }
1273         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1274                            -status=> $status, -expires => $expires);
1275         print <<EOF;
1276 <?xml version="1.0" encoding="utf-8"?>
1277 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1278 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1279 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1280 <!-- git core binaries version $git_version -->
1281 <head>
1282 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1283 <meta name="generator" content="gitweb/$version git/$git_version"/>
1284 <meta name="robots" content="index, nofollow"/>
1285 <title>$title</title>
1286 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1287 EOF
1288         if (defined $project) {
1289                 printf('<link rel="alternate" title="%s log" '.
1290                        'href="%s" type="application/rss+xml"/>'."\n",
1291                        esc_param($project), href(action=>"rss"));
1292         } else {
1293                 printf('<link rel="alternate" title="%s projects list" '.
1294                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1295                        $site_name, href(project=>undef, action=>"project_index"));
1296                 printf('<link rel="alternate" title="%s projects logs" '.
1297                        'href="%s" type="text/x-opml"/>'."\n",
1298                        $site_name, href(project=>undef, action=>"opml"));
1299         }
1300         if (defined $favicon) {
1301                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1302         }
1303
1304         print "</head>\n" .
1305               "<body>\n" .
1306               "<div class=\"page_header\">\n" .
1307               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1308               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1309               "</a>\n";
1310         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1311         if (defined $project) {
1312                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1313                 if (defined $action) {
1314                         print " / $action";
1315                 }
1316                 print "\n";
1317                 if (!defined $searchtext) {
1318                         $searchtext = "";
1319                 }
1320                 my $search_hash;
1321                 if (defined $hash_base) {
1322                         $search_hash = $hash_base;
1323                 } elsif (defined $hash) {
1324                         $search_hash = $hash;
1325                 } else {
1326                         $search_hash = "HEAD";
1327                 }
1328                 $cgi->param("a", "search");
1329                 $cgi->param("h", $search_hash);
1330                 print $cgi->startform(-method => "get", -action => $my_uri) .
1331                       "<div class=\"search\">\n" .
1332                       $cgi->hidden(-name => "p") . "\n" .
1333                       $cgi->hidden(-name => "a") . "\n" .
1334                       $cgi->hidden(-name => "h") . "\n" .
1335                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1336                       "</div>" .
1337                       $cgi->end_form() . "\n";
1338         }
1339         print "</div>\n";
1340 }
1341
1342 sub git_footer_html {
1343         print "<div class=\"page_footer\">\n";
1344         if (defined $project) {
1345                 my $descr = git_get_project_description($project);
1346                 if (defined $descr) {
1347                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1348                 }
1349                 print $cgi->a({-href => href(action=>"rss"),
1350                               -class => "rss_logo"}, "RSS") . "\n";
1351         } else {
1352                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1353                               -class => "rss_logo"}, "OPML") . " ";
1354                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1355                               -class => "rss_logo"}, "TXT") . "\n";
1356         }
1357         print "</div>\n" .
1358               "</body>\n" .
1359               "</html>";
1360 }
1361
1362 sub die_error {
1363         my $status = shift || "403 Forbidden";
1364         my $error = shift || "Malformed query, file missing or permission denied";
1365
1366         git_header_html($status);
1367         print <<EOF;
1368 <div class="page_body">
1369 <br /><br />
1370 $status - $error
1371 <br />
1372 </div>
1373 EOF
1374         git_footer_html();
1375         exit;
1376 }
1377
1378 ## ----------------------------------------------------------------------
1379 ## functions printing or outputting HTML: navigation
1380
1381 sub git_print_page_nav {
1382         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1383         $extra = '' if !defined $extra; # pager or formats
1384
1385         my @navs = qw(summary shortlog log commit commitdiff tree);
1386         if ($suppress) {
1387                 @navs = grep { $_ ne $suppress } @navs;
1388         }
1389
1390         my %arg = map { $_ => {action=>$_} } @navs;
1391         if (defined $head) {
1392                 for (qw(commit commitdiff)) {
1393                         $arg{$_}{hash} = $head;
1394                 }
1395                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1396                         for (qw(shortlog log)) {
1397                                 $arg{$_}{hash} = $head;
1398                         }
1399                 }
1400         }
1401         $arg{tree}{hash} = $treehead if defined $treehead;
1402         $arg{tree}{hash_base} = $treebase if defined $treebase;
1403
1404         print "<div class=\"page_nav\">\n" .
1405                 (join " | ",
1406                  map { $_ eq $current ?
1407                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1408                  } @navs);
1409         print "<br/>\n$extra<br/>\n" .
1410               "</div>\n";
1411 }
1412
1413 sub format_paging_nav {
1414         my ($action, $hash, $head, $page, $nrevs) = @_;
1415         my $paging_nav;
1416
1417
1418         if ($hash ne $head || $page) {
1419                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1420         } else {
1421                 $paging_nav .= "HEAD";
1422         }
1423
1424         if ($page > 0) {
1425                 $paging_nav .= " &sdot; " .
1426                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1427                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1428         } else {
1429                 $paging_nav .= " &sdot; prev";
1430         }
1431
1432         if ($nrevs >= (100 * ($page+1)-1)) {
1433                 $paging_nav .= " &sdot; " .
1434                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1435                                  -accesskey => "n", -title => "Alt-n"}, "next");
1436         } else {
1437                 $paging_nav .= " &sdot; next";
1438         }
1439
1440         return $paging_nav;
1441 }
1442
1443 ## ......................................................................
1444 ## functions printing or outputting HTML: div
1445
1446 sub git_print_header_div {
1447         my ($action, $title, $hash, $hash_base) = @_;
1448         my %args = ();
1449
1450         $args{action} = $action;
1451         $args{hash} = $hash if $hash;
1452         $args{hash_base} = $hash_base if $hash_base;
1453
1454         print "<div class=\"header\">\n" .
1455               $cgi->a({-href => href(%args), -class => "title"},
1456               $title ? $title : $action) .
1457               "\n</div>\n";
1458 }
1459
1460 #sub git_print_authorship (\%) {
1461 sub git_print_authorship {
1462         my $co = shift;
1463
1464         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1465         print "<div class=\"author_date\">" .
1466               esc_html($co->{'author_name'}) .
1467               " [$ad{'rfc2822'}";
1468         if ($ad{'hour_local'} < 6) {
1469                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1470                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1471         } else {
1472                 printf(" (%02d:%02d %s)",
1473                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1474         }
1475         print "]</div>\n";
1476 }
1477
1478 sub git_print_page_path {
1479         my $name = shift;
1480         my $type = shift;
1481         my $hb = shift;
1482
1483         if (!defined $name) {
1484                 print "<div class=\"page_path\">/</div>\n";
1485         } else {
1486                 my @dirname = split '/', $name;
1487                 my $basename = pop @dirname;
1488                 my $fullname = '';
1489
1490                 print "<div class=\"page_path\">";
1491                 foreach my $dir (@dirname) {
1492                         $fullname .= $dir . '/';
1493                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1494                                                      hash_base=>$hb),
1495                                       -title => $fullname}, esc_html($dir));
1496                         print "/";
1497                 }
1498                 if (defined $type && $type eq 'blob') {
1499                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1500                                                      hash_base=>$hb),
1501                                       -title => $name}, esc_html($basename));
1502                 } elsif (defined $type && $type eq 'tree') {
1503                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1504                                                      hash_base=>$hb),
1505                                       -title => $name}, esc_html($basename));
1506                         print "/";
1507                 } else {
1508                         print esc_html($basename);
1509                 }
1510                 print "<br/></div>\n";
1511         }
1512 }
1513
1514 # sub git_print_log (\@;%) {
1515 sub git_print_log ($;%) {
1516         my $log = shift;
1517         my %opts = @_;
1518
1519         if ($opts{'-remove_title'}) {
1520                 # remove title, i.e. first line of log
1521                 shift @$log;
1522         }
1523         # remove leading empty lines
1524         while (defined $log->[0] && $log->[0] eq "") {
1525                 shift @$log;
1526         }
1527
1528         # print log
1529         my $signoff = 0;
1530         my $empty = 0;
1531         foreach my $line (@$log) {
1532                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1533                         $signoff = 1;
1534                         $empty = 0;
1535                         if (! $opts{'-remove_signoff'}) {
1536                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1537                                 next;
1538                         } else {
1539                                 # remove signoff lines
1540                                 next;
1541                         }
1542                 } else {
1543                         $signoff = 0;
1544                 }
1545
1546                 # print only one empty line
1547                 # do not print empty line after signoff
1548                 if ($line eq "") {
1549                         next if ($empty || $signoff);
1550                         $empty = 1;
1551                 } else {
1552                         $empty = 0;
1553                 }
1554
1555                 print format_log_line_html($line) . "<br/>\n";
1556         }
1557
1558         if ($opts{'-final_empty_line'}) {
1559                 # end with single empty line
1560                 print "<br/>\n" unless $empty;
1561         }
1562 }
1563
1564 sub git_print_simplified_log {
1565         my $log = shift;
1566         my $remove_title = shift;
1567
1568         git_print_log($log,
1569                 -final_empty_line=> 1,
1570                 -remove_title => $remove_title);
1571 }
1572
1573 # print tree entry (row of git_tree), but without encompassing <tr> element
1574 sub git_print_tree_entry {
1575         my ($t, $basedir, $hash_base, $have_blame) = @_;
1576
1577         my %base_key = ();
1578         $base_key{hash_base} = $hash_base if defined $hash_base;
1579
1580         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1581         if ($t->{'type'} eq "blob") {
1582                 print "<td class=\"list\">" .
1583                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1584                                              file_name=>"$basedir$t->{'name'}", %base_key),
1585                               -class => "list"}, esc_html($t->{'name'})) .
1586                       "</td>\n" .
1587                       "<td class=\"link\">" .
1588                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1589                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1590                               "blob");
1591                 if ($have_blame) {
1592                         print " | " .
1593                                 $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1594                                                        file_name=>"$basedir$t->{'name'}", %base_key)},
1595                                         "blame");
1596                 }
1597                 if (defined $hash_base) {
1598                         print " | " .
1599                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1600                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1601                                       "history");
1602                 }
1603                 print " | " .
1604                       $cgi->a({-href => href(action=>"blob_plain",
1605                                              hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1606                               "raw") .
1607                       "</td>\n";
1608
1609         } elsif ($t->{'type'} eq "tree") {
1610                 print "<td class=\"list\">" .
1611                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1612                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1613                               esc_html($t->{'name'})) .
1614                       "</td>\n" .
1615                       "<td class=\"link\">" .
1616                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1617                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1618                               "tree");
1619                 if (defined $hash_base) {
1620                         print " | " .
1621                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1622                                                      file_name=>"$basedir$t->{'name'}")},
1623                                       "history");
1624                 }
1625                 print "</td>\n";
1626         }
1627 }
1628
1629 ## ......................................................................
1630 ## functions printing large fragments of HTML
1631
1632 sub git_difftree_body {
1633         my ($difftree, $hash, $parent) = @_;
1634
1635         print "<div class=\"list_head\">\n";
1636         if ($#{$difftree} > 10) {
1637                 print(($#{$difftree} + 1) . " files changed:\n");
1638         }
1639         print "</div>\n";
1640
1641         print "<table class=\"diff_tree\">\n";
1642         my $alternate = 0;
1643         my $patchno = 0;
1644         foreach my $line (@{$difftree}) {
1645                 my %diff = parse_difftree_raw_line($line);
1646
1647                 if ($alternate) {
1648                         print "<tr class=\"dark\">\n";
1649                 } else {
1650                         print "<tr class=\"light\">\n";
1651                 }
1652                 $alternate ^= 1;
1653
1654                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1655                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1656                 if ($diff{'to_mode'} ne ('0' x 6)) {
1657                         $to_mode_oct = oct $diff{'to_mode'};
1658                         if (S_ISREG($to_mode_oct)) { # only for regular file
1659                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1660                         }
1661                         $to_file_type = file_type($diff{'to_mode'});
1662                 }
1663                 if ($diff{'from_mode'} ne ('0' x 6)) {
1664                         $from_mode_oct = oct $diff{'from_mode'};
1665                         if (S_ISREG($to_mode_oct)) { # only for regular file
1666                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1667                         }
1668                         $from_file_type = file_type($diff{'from_mode'});
1669                 }
1670
1671                 if ($diff{'status'} eq "A") { # created
1672                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1673                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1674                         $mode_chng   .= "]</span>";
1675                         print "<td>" .
1676                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1677                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1678                                       -class => "list"}, esc_html($diff{'file'})) .
1679                               "</td>\n" .
1680                               "<td>$mode_chng</td>\n" .
1681                               "<td class=\"link\">" .
1682                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1683                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1684                                       "blob");
1685                         if ($action eq 'commitdiff') {
1686                                 # link to patch
1687                                 $patchno++;
1688                                 print " | " .
1689                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1690                         }
1691                         print "</td>\n";
1692
1693                 } elsif ($diff{'status'} eq "D") { # deleted
1694                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1695                         print "<td>" .
1696                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1697                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1698                                        -class => "list"}, esc_html($diff{'file'})) .
1699                               "</td>\n" .
1700                               "<td>$mode_chng</td>\n" .
1701                               "<td class=\"link\">" .
1702                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1703                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1704                                       "blob") .
1705                               " | ";
1706                         if ($action eq 'commitdiff') {
1707                                 # link to patch
1708                                 $patchno++;
1709                                 print " | " .
1710                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1711                         }
1712                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1713                                                      file_name=>$diff{'file'})},
1714                                       "history") .
1715                               "</td>\n";
1716
1717                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1718                         my $mode_chnge = "";
1719                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1720                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1721                                 if ($from_file_type != $to_file_type) {
1722                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1723                                 }
1724                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1725                                         if ($from_mode_str && $to_mode_str) {
1726                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1727                                         } elsif ($to_mode_str) {
1728                                                 $mode_chnge .= " mode: $to_mode_str";
1729                                         }
1730                                 }
1731                                 $mode_chnge .= "]</span>\n";
1732                         }
1733                         print "<td>";
1734                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1735                                 print $cgi->a({-href => href(action=>"blobdiff",
1736                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1737                                                              hash_base=>$hash, hash_parent_base=>$parent,
1738                                                              file_name=>$diff{'file'}),
1739                                               -class => "list"}, esc_html($diff{'file'}));
1740                         } else { # only mode changed
1741                                 print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1742                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1743                                               -class => "list"}, esc_html($diff{'file'}));
1744                         }
1745                         print "</td>\n" .
1746                               "<td>$mode_chnge</td>\n" .
1747                               "<td class=\"link\">" .
1748                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1749                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1750                                       "blob");
1751                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1752                                 if ($action eq 'commitdiff') {
1753                                         # link to patch
1754                                         $patchno++;
1755                                         print " | " .
1756                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1757                                 } else {
1758                                         print " | " .
1759                                                 $cgi->a({-href => href(action=>"blobdiff",
1760                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1761                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1762                                                                        file_name=>$diff{'file'})},
1763                                                         "diff");
1764                                 }
1765                         }
1766                         print " | " .
1767                                 $cgi->a({-href => href(action=>"history",
1768                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1769                                         "history");
1770                         print "</td>\n";
1771
1772                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1773                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1774                         my $nstatus = $status_name{$diff{'status'}};
1775                         my $mode_chng = "";
1776                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1777                                 # mode also for directories, so we cannot use $to_mode_str
1778                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1779                         }
1780                         print "<td>" .
1781                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1782                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1783                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1784                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1785                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1786                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1787                                       -class => "list"}, esc_html($diff{'from_file'})) .
1788                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1789                               "<td class=\"link\">" .
1790                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1791                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'})},
1792                                       "blob");
1793                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1794                                 if ($action eq 'commitdiff') {
1795                                         # link to patch
1796                                         $patchno++;
1797                                         print " | " .
1798                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1799                                 } else {
1800                                         print " | " .
1801                                                 $cgi->a({-href => href(action=>"blobdiff",
1802                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1803                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1804                                                                        file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1805                                                         "diff");
1806                                 }
1807                         }
1808                         print "</td>\n";
1809
1810                 } # we should not encounter Unmerged (U) or Unknown (X) status
1811                 print "</tr>\n";
1812         }
1813         print "</table>\n";
1814 }
1815
1816 sub git_patchset_body {
1817         my ($fd, $difftree, $hash, $hash_parent) = @_;
1818
1819         my $patch_idx = 0;
1820         my $in_header = 0;
1821         my $patch_found = 0;
1822         my $diffinfo;
1823
1824         print "<div class=\"patchset\">\n";
1825
1826         LINE:
1827         while (my $patch_line = <$fd>) {
1828                 chomp $patch_line;
1829
1830                 if ($patch_line =~ m/^diff /) { # "git diff" header
1831                         # beginning of patch (in patchset)
1832                         if ($patch_found) {
1833                                 # close previous patch
1834                                 print "</div>\n"; # class="patch"
1835                         } else {
1836                                 # first patch in patchset
1837                                 $patch_found = 1;
1838                         }
1839                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1840
1841                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1842                                 $diffinfo = $difftree->[$patch_idx];
1843                         } else {
1844                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1845                         }
1846                         $patch_idx++;
1847
1848                         # for now, no extended header, hence we skip empty patches
1849                         # companion to  next LINE if $in_header;
1850                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1851                                 $in_header = 1;
1852                                 next LINE;
1853                         }
1854
1855                         if ($diffinfo->{'status'} eq "A") { # added
1856                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1857                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1858                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1859                                               $diffinfo->{'to_id'}) . "(new)" .
1860                                       "</div>\n"; # class="diff_info"
1861
1862                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1863                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1864                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1865                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1866                                               $diffinfo->{'from_id'}) . "(deleted)" .
1867                                       "</div>\n"; # class="diff_info"
1868
1869                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1870                                  $diffinfo->{'status'} eq "C" || # copied
1871                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1872                                 print "<div class=\"diff_info\">" .
1873                                       file_type($diffinfo->{'from_mode'}) . ":" .
1874                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1875                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1876                                               $diffinfo->{'from_id'}) .
1877                                       " -> " .
1878                                       file_type($diffinfo->{'to_mode'}) . ":" .
1879                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1880                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1881                                               $diffinfo->{'to_id'});
1882                                 print "</div>\n"; # class="diff_info"
1883
1884                         } else { # modified, mode changed, ...
1885                                 print "<div class=\"diff_info\">" .
1886                                       file_type($diffinfo->{'from_mode'}) . ":" .
1887                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1888                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1889                                               $diffinfo->{'from_id'}) .
1890                                       " -> " .
1891                                       file_type($diffinfo->{'to_mode'}) . ":" .
1892                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1893                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1894                                               $diffinfo->{'to_id'});
1895                                 print "</div>\n"; # class="diff_info"
1896                         }
1897
1898                         #print "<div class=\"diff extended_header\">\n";
1899                         $in_header = 1;
1900                         next LINE;
1901                 } # start of patch in patchset
1902
1903
1904                 if ($in_header && $patch_line =~ m/^---/) {
1905                         #print "</div>\n"; # class="diff extended_header"
1906                         $in_header = 0;
1907
1908                         my $file = $diffinfo->{'from_file'};
1909                         $file  ||= $diffinfo->{'file'};
1910                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1911                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1912                                         -class => "list"}, esc_html($file));
1913                         $patch_line =~ s|a/.*$|a/$file|g;
1914                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1915
1916                         $patch_line = <$fd>;
1917                         chomp $patch_line;
1918
1919                         #$patch_line =~ m/^+++/;
1920                         $file    = $diffinfo->{'to_file'};
1921                         $file  ||= $diffinfo->{'file'};
1922                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1923                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1924                                         -class => "list"}, esc_html($file));
1925                         $patch_line =~ s|b/.*|b/$file|g;
1926                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1927
1928                         next LINE;
1929                 }
1930                 next LINE if $in_header;
1931
1932                 print format_diff_line($patch_line);
1933         }
1934         print "</div>\n" if $patch_found; # class="patch"
1935
1936         print "</div>\n"; # class="patchset"
1937 }
1938
1939 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1940
1941 sub git_shortlog_body {
1942         # uses global variable $project
1943         my ($revlist, $from, $to, $refs, $extra) = @_;
1944
1945         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
1946         my $have_snapshot = (defined $ctype && defined $suffix);
1947
1948         $from = 0 unless defined $from;
1949         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1950
1951         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1952         my $alternate = 0;
1953         for (my $i = $from; $i <= $to; $i++) {
1954                 my $commit = $revlist->[$i];
1955                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1956                 my $ref = format_ref_marker($refs, $commit);
1957                 my %co = parse_commit($commit);
1958                 if ($alternate) {
1959                         print "<tr class=\"dark\">\n";
1960                 } else {
1961                         print "<tr class=\"light\">\n";
1962                 }
1963                 $alternate ^= 1;
1964                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1965                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1966                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1967                       "<td>";
1968                 print format_subject_html($co{'title'}, $co{'title_short'},
1969                                           href(action=>"commit", hash=>$commit), $ref);
1970                 print "</td>\n" .
1971                       "<td class=\"link\">" .
1972                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1973                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
1974                 if ($have_snapshot) {
1975                         print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
1976                 }
1977                 print "</td>\n" .
1978                       "</tr>\n";
1979         }
1980         if (defined $extra) {
1981                 print "<tr>\n" .
1982                       "<td colspan=\"4\">$extra</td>\n" .
1983                       "</tr>\n";
1984         }
1985         print "</table>\n";
1986 }
1987
1988 sub git_history_body {
1989         # Warning: assumes constant type (blob or tree) during history
1990         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
1991
1992         $from = 0 unless defined $from;
1993         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
1994
1995         print "<table class=\"history\" cellspacing=\"0\">\n";
1996         my $alternate = 0;
1997         for (my $i = $from; $i <= $to; $i++) {
1998                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
1999                         next;
2000                 }
2001
2002                 my $commit = $1;
2003                 my %co = parse_commit($commit);
2004                 if (!%co) {
2005                         next;
2006                 }
2007
2008                 my $ref = format_ref_marker($refs, $commit);
2009
2010                 if ($alternate) {
2011                         print "<tr class=\"dark\">\n";
2012                 } else {
2013                         print "<tr class=\"light\">\n";
2014                 }
2015                 $alternate ^= 1;
2016                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2017                       # shortlog uses      chop_str($co{'author_name'}, 10)
2018                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2019                       "<td>";
2020                 # originally git_history used chop_str($co{'title'}, 50)
2021                 print format_subject_html($co{'title'}, $co{'title_short'},
2022                                           href(action=>"commit", hash=>$commit), $ref);
2023                 print "</td>\n" .
2024                       "<td class=\"link\">" .
2025                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2026                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2027                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
2028
2029                 if ($ftype eq 'blob') {
2030                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2031                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2032                         if (defined $blob_current && defined $blob_parent &&
2033                                         $blob_current ne $blob_parent) {
2034                                 print " | " .
2035                                         $cgi->a({-href => href(action=>"blobdiff",
2036                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2037                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2038                                                                file_name=>$file_name)},
2039                                                 "diff to current");
2040                         }
2041                 }
2042                 print "</td>\n" .
2043                       "</tr>\n";
2044         }
2045         if (defined $extra) {
2046                 print "<tr>\n" .
2047                       "<td colspan=\"4\">$extra</td>\n" .
2048                       "</tr>\n";
2049         }
2050         print "</table>\n";
2051 }
2052
2053 sub git_tags_body {
2054         # uses global variable $project
2055         my ($taglist, $from, $to, $extra) = @_;
2056         $from = 0 unless defined $from;
2057         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2058
2059         print "<table class=\"tags\" cellspacing=\"0\">\n";
2060         my $alternate = 0;
2061         for (my $i = $from; $i <= $to; $i++) {
2062                 my $entry = $taglist->[$i];
2063                 my %tag = %$entry;
2064                 my $comment_lines = $tag{'comment'};
2065                 my $comment = shift @$comment_lines;
2066                 my $comment_short;
2067                 if (defined $comment) {
2068                         $comment_short = chop_str($comment, 30, 5);
2069                 }
2070                 if ($alternate) {
2071                         print "<tr class=\"dark\">\n";
2072                 } else {
2073                         print "<tr class=\"light\">\n";
2074                 }
2075                 $alternate ^= 1;
2076                 print "<td><i>$tag{'age'}</i></td>\n" .
2077                       "<td>" .
2078                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2079                                -class => "list name"}, esc_html($tag{'name'})) .
2080                       "</td>\n" .
2081                       "<td>";
2082                 if (defined $comment) {
2083                         print format_subject_html($comment, $comment_short,
2084                                                   href(action=>"tag", hash=>$tag{'id'}));
2085                 }
2086                 print "</td>\n" .
2087                       "<td class=\"selflink\">";
2088                 if ($tag{'type'} eq "tag") {
2089                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2090                 } else {
2091                         print "&nbsp;";
2092                 }
2093                 print "</td>\n" .
2094                       "<td class=\"link\">" . " | " .
2095                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2096                 if ($tag{'reftype'} eq "commit") {
2097                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2098                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2099                 } elsif ($tag{'reftype'} eq "blob") {
2100                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2101                 }
2102                 print "</td>\n" .
2103                       "</tr>";
2104         }
2105         if (defined $extra) {
2106                 print "<tr>\n" .
2107                       "<td colspan=\"5\">$extra</td>\n" .
2108                       "</tr>\n";
2109         }
2110         print "</table>\n";
2111 }
2112
2113 sub git_heads_body {
2114         # uses global variable $project
2115         my ($taglist, $head, $from, $to, $extra) = @_;
2116         $from = 0 unless defined $from;
2117         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2118
2119         print "<table class=\"heads\" cellspacing=\"0\">\n";
2120         my $alternate = 0;
2121         for (my $i = $from; $i <= $to; $i++) {
2122                 my $entry = $taglist->[$i];
2123                 my %tag = %$entry;
2124                 my $curr = $tag{'id'} eq $head;
2125                 if ($alternate) {
2126                         print "<tr class=\"dark\">\n";
2127                 } else {
2128                         print "<tr class=\"light\">\n";
2129                 }
2130                 $alternate ^= 1;
2131                 print "<td><i>$tag{'age'}</i></td>\n" .
2132                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2133                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2134                                -class => "list name"},esc_html($tag{'name'})) .
2135                       "</td>\n" .
2136                       "<td class=\"link\">" .
2137                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2138                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") .
2139                       "</td>\n" .
2140                       "</tr>";
2141         }
2142         if (defined $extra) {
2143                 print "<tr>\n" .
2144                       "<td colspan=\"3\">$extra</td>\n" .
2145                       "</tr>\n";
2146         }
2147         print "</table>\n";
2148 }
2149
2150 ## ======================================================================
2151 ## ======================================================================
2152 ## actions
2153
2154 sub git_project_list {
2155         my $order = $cgi->param('o');
2156         if (defined $order && $order !~ m/project|descr|owner|age/) {
2157                 die_error(undef, "Unknown order parameter");
2158         }
2159
2160         my @list = git_get_projects_list();
2161         my @projects;
2162         if (!@list) {
2163                 die_error(undef, "No projects found");
2164         }
2165         foreach my $pr (@list) {
2166                 my $head = git_get_head_hash($pr->{'path'});
2167                 if (!defined $head) {
2168                         next;
2169                 }
2170                 $git_dir = "$projectroot/$pr->{'path'}";
2171                 my %co = parse_commit($head);
2172                 if (!%co) {
2173                         next;
2174                 }
2175                 $pr->{'commit'} = \%co;
2176                 if (!defined $pr->{'descr'}) {
2177                         my $descr = git_get_project_description($pr->{'path'}) || "";
2178                         $pr->{'descr'} = chop_str($descr, 25, 5);
2179                 }
2180                 if (!defined $pr->{'owner'}) {
2181                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2182                 }
2183                 push @projects, $pr;
2184         }
2185
2186         git_header_html();
2187         if (-f $home_text) {
2188                 print "<div class=\"index_include\">\n";
2189                 open (my $fd, $home_text);
2190                 print <$fd>;
2191                 close $fd;
2192                 print "</div>\n";
2193         }
2194         print "<table class=\"project_list\">\n" .
2195               "<tr>\n";
2196         $order ||= "project";
2197         if ($order eq "project") {
2198                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2199                 print "<th>Project</th>\n";
2200         } else {
2201                 print "<th>" .
2202                       $cgi->a({-href => href(project=>undef, order=>'project'),
2203                                -class => "header"}, "Project") .
2204                       "</th>\n";
2205         }
2206         if ($order eq "descr") {
2207                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2208                 print "<th>Description</th>\n";
2209         } else {
2210                 print "<th>" .
2211                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2212                                -class => "header"}, "Description") .
2213                       "</th>\n";
2214         }
2215         if ($order eq "owner") {
2216                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2217                 print "<th>Owner</th>\n";
2218         } else {
2219                 print "<th>" .
2220                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2221                                -class => "header"}, "Owner") .
2222                       "</th>\n";
2223         }
2224         if ($order eq "age") {
2225                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2226                 print "<th>Last Change</th>\n";
2227         } else {
2228                 print "<th>" .
2229                       $cgi->a({-href => href(project=>undef, order=>'age'),
2230                                -class => "header"}, "Last Change") .
2231                       "</th>\n";
2232         }
2233         print "<th></th>\n" .
2234               "</tr>\n";
2235         my $alternate = 0;
2236         foreach my $pr (@projects) {
2237                 if ($alternate) {
2238                         print "<tr class=\"dark\">\n";
2239                 } else {
2240                         print "<tr class=\"light\">\n";
2241                 }
2242                 $alternate ^= 1;
2243                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2244                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2245                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2246                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2247                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2248                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2249                       "<td class=\"link\">" .
2250                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2251                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2252                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") .
2253                       "</td>\n" .
2254                       "</tr>\n";
2255         }
2256         print "</table>\n";
2257         git_footer_html();
2258 }
2259
2260 sub git_project_index {
2261         my @projects = git_get_projects_list();
2262
2263         print $cgi->header(
2264                 -type => 'text/plain',
2265                 -charset => 'utf-8',
2266                 -content_disposition => qq(inline; filename="index.aux"));
2267
2268         foreach my $pr (@projects) {
2269                 if (!exists $pr->{'owner'}) {
2270                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2271                 }
2272
2273                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2274                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2275                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2276                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2277                 $path  =~ s/ /\+/g;
2278                 $owner =~ s/ /\+/g;
2279
2280                 print "$path $owner\n";
2281         }
2282 }
2283
2284 sub git_summary {
2285         my $descr = git_get_project_description($project) || "none";
2286         my $head = git_get_head_hash($project);
2287         my %co = parse_commit($head);
2288         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2289
2290         my $owner = git_get_project_owner($project);
2291
2292         my $refs = git_get_references();
2293         git_header_html();
2294         git_print_page_nav('summary','', $head);
2295
2296         print "<div class=\"title\">&nbsp;</div>\n";
2297         print "<table cellspacing=\"0\">\n" .
2298               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2299               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2300               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2301         # use per project git URL list in $projectroot/$project/cloneurl
2302         # or make project git URL from git base URL and project name
2303         my $url_tag = "URL";
2304         my @url_list = git_get_project_url_list($project);
2305         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2306         foreach my $git_url (@url_list) {
2307                 next unless $git_url;
2308                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2309                 $url_tag = "";
2310         }
2311         print "</table>\n";
2312
2313         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2314                 git_get_head_hash($project)
2315                 or die_error(undef, "Open git-rev-list failed");
2316         my @revlist = map { chomp; $_ } <$fd>;
2317         close $fd;
2318         git_print_header_div('shortlog');
2319         git_shortlog_body(\@revlist, 0, 15, $refs,
2320                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2321
2322         my $taglist = git_get_refs_list("refs/tags");
2323         if (defined @$taglist) {
2324                 git_print_header_div('tags');
2325                 git_tags_body($taglist, 0, 15,
2326                               $cgi->a({-href => href(action=>"tags")}, "..."));
2327         }
2328
2329         my $headlist = git_get_refs_list("refs/heads");
2330         if (defined @$headlist) {
2331                 git_print_header_div('heads');
2332                 git_heads_body($headlist, $head, 0, 15,
2333                                $cgi->a({-href => href(action=>"heads")}, "..."));
2334         }
2335
2336         git_footer_html();
2337 }
2338
2339 sub git_tag {
2340         my $head = git_get_head_hash($project);
2341         git_header_html();
2342         git_print_page_nav('','', $head,undef,$head);
2343         my %tag = parse_tag($hash);
2344         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2345         print "<div class=\"title_text\">\n" .
2346               "<table cellspacing=\"0\">\n" .
2347               "<tr>\n" .
2348               "<td>object</td>\n" .
2349               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2350                                $tag{'object'}) . "</td>\n" .
2351               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2352                                               $tag{'type'}) . "</td>\n" .
2353               "</tr>\n";
2354         if (defined($tag{'author'})) {
2355                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2356                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2357                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2358                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2359                         "</td></tr>\n";
2360         }
2361         print "</table>\n\n" .
2362               "</div>\n";
2363         print "<div class=\"page_body\">";
2364         my $comment = $tag{'comment'};
2365         foreach my $line (@$comment) {
2366                 print esc_html($line) . "<br/>\n";
2367         }
2368         print "</div>\n";
2369         git_footer_html();
2370 }
2371
2372 sub git_blame2 {
2373         my $fd;
2374         my $ftype;
2375
2376         my ($have_blame) = gitweb_check_feature('blame');
2377         if (!$have_blame) {
2378                 die_error('403 Permission denied', "Permission denied");
2379         }
2380         die_error('404 Not Found', "File name not defined") if (!$file_name);
2381         $hash_base ||= git_get_head_hash($project);
2382         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2383         my %co = parse_commit($hash_base)
2384                 or die_error(undef, "Reading commit failed");
2385         if (!defined $hash) {
2386                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2387                         or die_error(undef, "Error looking up file");
2388         }
2389         $ftype = git_get_type($hash);
2390         if ($ftype !~ "blob") {
2391                 die_error("400 Bad Request", "Object is not a blob");
2392         }
2393         open ($fd, "-|", git_cmd(), "blame", '-l', $file_name, $hash_base)
2394                 or die_error(undef, "Open git-blame failed");
2395         git_header_html();
2396         my $formats_nav =
2397                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2398                         "blob") .
2399                 " | " .
2400                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2401                         "head");
2402         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2403         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2404         git_print_page_path($file_name, $ftype, $hash_base);
2405         my @rev_color = (qw(light2 dark2));
2406         my $num_colors = scalar(@rev_color);
2407         my $current_color = 0;
2408         my $last_rev;
2409         print <<HTML;
2410 <div class="page_body">
2411 <table class="blame">
2412 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2413 HTML
2414         while (<$fd>) {
2415                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2416                 my $full_rev = $1;
2417                 my $rev = substr($full_rev, 0, 8);
2418                 my $lineno = $2;
2419                 my $data = $3;
2420
2421                 if (!defined $last_rev) {
2422                         $last_rev = $full_rev;
2423                 } elsif ($last_rev ne $full_rev) {
2424                         $last_rev = $full_rev;
2425                         $current_color = ++$current_color % $num_colors;
2426                 }
2427                 print "<tr class=\"$rev_color[$current_color]\">\n";
2428                 print "<td class=\"sha1\">" .
2429                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2430                                 esc_html($rev)) . "</td>\n";
2431                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2432                       esc_html($lineno) . "</a></td>\n";
2433                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2434                 print "</tr>\n";
2435         }
2436         print "</table>\n";
2437         print "</div>";
2438         close $fd
2439                 or print "Reading blob failed\n";
2440         git_footer_html();
2441 }
2442
2443 sub git_blame {
2444         my $fd;
2445
2446         my ($have_blame) = gitweb_check_feature('blame');
2447         if (!$have_blame) {
2448                 die_error('403 Permission denied', "Permission denied");
2449         }
2450         die_error('404 Not Found', "File name not defined") if (!$file_name);
2451         $hash_base ||= git_get_head_hash($project);
2452         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2453         my %co = parse_commit($hash_base)
2454                 or die_error(undef, "Reading commit failed");
2455         if (!defined $hash) {
2456                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2457                         or die_error(undef, "Error lookup file");
2458         }
2459         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2460                 or die_error(undef, "Open git-annotate failed");
2461         git_header_html();
2462         my $formats_nav =
2463                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2464                         "blob") .
2465                 " | " .
2466                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2467                         "head");
2468         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2469         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2470         git_print_page_path($file_name, 'blob', $hash_base);
2471         print "<div class=\"page_body\">\n";
2472         print <<HTML;
2473 <table class="blame">
2474   <tr>
2475     <th>Commit</th>
2476     <th>Age</th>
2477     <th>Author</th>
2478     <th>Line</th>
2479     <th>Data</th>
2480   </tr>
2481 HTML
2482         my @line_class = (qw(light dark));
2483         my $line_class_len = scalar (@line_class);
2484         my $line_class_num = $#line_class;
2485         while (my $line = <$fd>) {
2486                 my $long_rev;
2487                 my $short_rev;
2488                 my $author;
2489                 my $time;
2490                 my $lineno;
2491                 my $data;
2492                 my $age;
2493                 my $age_str;
2494                 my $age_class;
2495
2496                 chomp $line;
2497                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2498
2499                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2500                         $long_rev = $1;
2501                         $author   = $2;
2502                         $time     = $3;
2503                         $lineno   = $4;
2504                         $data     = $5;
2505                 } else {
2506                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2507                         next;
2508                 }
2509                 $short_rev  = substr ($long_rev, 0, 8);
2510                 $age        = time () - $time;
2511                 $age_str    = age_string ($age);
2512                 $age_str    =~ s/ /&nbsp;/g;
2513                 $age_class  = age_class($age);
2514                 $author     = esc_html ($author);
2515                 $author     =~ s/ /&nbsp;/g;
2516
2517                 $data = untabify($data);
2518                 $data = esc_html ($data);
2519
2520                 print <<HTML;
2521   <tr class="$line_class[$line_class_num]">
2522     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2523     <td class="$age_class">$age_str</td>
2524     <td>$author</td>
2525     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2526     <td class="pre">$data</td>
2527   </tr>
2528 HTML
2529         } # while (my $line = <$fd>)
2530         print "</table>\n\n";
2531         close $fd
2532                 or print "Reading blob failed.\n";
2533         print "</div>";
2534         git_footer_html();
2535 }
2536
2537 sub git_tags {
2538         my $head = git_get_head_hash($project);
2539         git_header_html();
2540         git_print_page_nav('','', $head,undef,$head);
2541         git_print_header_div('summary', $project);
2542
2543         my $taglist = git_get_refs_list("refs/tags");
2544         if (defined @$taglist) {
2545                 git_tags_body($taglist);
2546         }
2547         git_footer_html();
2548 }
2549
2550 sub git_heads {
2551         my $head = git_get_head_hash($project);
2552         git_header_html();
2553         git_print_page_nav('','', $head,undef,$head);
2554         git_print_header_div('summary', $project);
2555
2556         my $taglist = git_get_refs_list("refs/heads");
2557         if (defined @$taglist) {
2558                 git_heads_body($taglist, $head);
2559         }
2560         git_footer_html();
2561 }
2562
2563 sub git_blob_plain {
2564         my $expires;
2565
2566         if (!defined $hash) {
2567                 if (defined $file_name) {
2568                         my $base = $hash_base || git_get_head_hash($project);
2569                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2570                                 or die_error(undef, "Error lookup file");
2571                 } else {
2572                         die_error(undef, "No file name defined");
2573                 }
2574         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2575                 # blobs defined by non-textual hash id's can be cached
2576                 $expires = "+1d";
2577         }
2578
2579         my $type = shift;
2580         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2581                 or die_error(undef, "Couldn't cat $file_name, $hash");
2582
2583         $type ||= blob_mimetype($fd, $file_name);
2584
2585         # save as filename, even when no $file_name is given
2586         my $save_as = "$hash";
2587         if (defined $file_name) {
2588                 $save_as = $file_name;
2589         } elsif ($type =~ m/^text\//) {
2590                 $save_as .= '.txt';
2591         }
2592
2593         print $cgi->header(
2594                 -type => "$type",
2595                 -expires=>$expires,
2596                 -content_disposition => "inline; filename=\"$save_as\"");
2597         undef $/;
2598         binmode STDOUT, ':raw';
2599         print <$fd>;
2600         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2601         $/ = "\n";
2602         close $fd;
2603 }
2604
2605 sub git_blob {
2606         my $expires;
2607
2608         if (!defined $hash) {
2609                 if (defined $file_name) {
2610                         my $base = $hash_base || git_get_head_hash($project);
2611                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2612                                 or die_error(undef, "Error lookup file");
2613                 } else {
2614                         die_error(undef, "No file name defined");
2615                 }
2616         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2617                 # blobs defined by non-textual hash id's can be cached
2618                 $expires = "+1d";
2619         }
2620
2621         my ($have_blame) = gitweb_check_feature('blame');
2622         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2623                 or die_error(undef, "Couldn't cat $file_name, $hash");
2624         my $mimetype = blob_mimetype($fd, $file_name);
2625         if ($mimetype !~ m/^text\//) {
2626                 close $fd;
2627                 return git_blob_plain($mimetype);
2628         }
2629         git_header_html(undef, $expires);
2630         my $formats_nav = '';
2631         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2632                 if (defined $file_name) {
2633                         if ($have_blame) {
2634                                 $formats_nav .=
2635                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2636                                                                hash=>$hash, file_name=>$file_name)},
2637                                                 "blame") .
2638                                         " | ";
2639                         }
2640                         $formats_nav .=
2641                                 $cgi->a({-href => href(action=>"blob_plain",
2642                                                        hash=>$hash, file_name=>$file_name)},
2643                                         "plain") .
2644                                 " | " .
2645                                 $cgi->a({-href => href(action=>"blob",
2646                                                        hash_base=>"HEAD", file_name=>$file_name)},
2647                                         "head");
2648                 } else {
2649                         $formats_nav .=
2650                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "plain");
2651                 }
2652                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2653                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2654         } else {
2655                 print "<div class=\"page_nav\">\n" .
2656                       "<br/><br/></div>\n" .
2657                       "<div class=\"title\">$hash</div>\n";
2658         }
2659         git_print_page_path($file_name, "blob", $hash_base);
2660         print "<div class=\"page_body\">\n";
2661         my $nr;
2662         while (my $line = <$fd>) {
2663                 chomp $line;
2664                 $nr++;
2665                 $line = untabify($line);
2666                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2667                        $nr, $nr, $nr, esc_html($line);
2668         }
2669         close $fd
2670                 or print "Reading blob failed.\n";
2671         print "</div>";
2672         git_footer_html();
2673 }
2674
2675 sub git_tree {
2676         if (!defined $hash) {
2677                 $hash = git_get_head_hash($project);
2678                 if (defined $file_name) {
2679                         my $base = $hash_base || $hash;
2680                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2681                 }
2682                 if (!defined $hash_base) {
2683                         $hash_base = $hash;
2684                 }
2685         }
2686         $/ = "\0";
2687         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2688                 or die_error(undef, "Open git-ls-tree failed");
2689         my @entries = map { chomp; $_ } <$fd>;
2690         close $fd or die_error(undef, "Reading tree failed");
2691         $/ = "\n";
2692
2693         my $refs = git_get_references();
2694         my $ref = format_ref_marker($refs, $hash_base);
2695         git_header_html();
2696         my $base = "";
2697         my ($have_blame) = gitweb_check_feature('blame');
2698         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2699                 git_print_page_nav('tree','', $hash_base);
2700                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2701         } else {
2702                 undef $hash_base;
2703                 print "<div class=\"page_nav\">\n";
2704                 print "<br/><br/></div>\n";
2705                 print "<div class=\"title\">$hash</div>\n";
2706         }
2707         if (defined $file_name) {
2708                 $base = esc_html("$file_name/");
2709         }
2710         git_print_page_path($file_name, 'tree', $hash_base);
2711         print "<div class=\"page_body\">\n";
2712         print "<table cellspacing=\"0\">\n";
2713         my $alternate = 0;
2714         foreach my $line (@entries) {
2715                 my %t = parse_ls_tree_line($line, -z => 1);
2716
2717                 if ($alternate) {
2718                         print "<tr class=\"dark\">\n";
2719                 } else {
2720                         print "<tr class=\"light\">\n";
2721                 }
2722                 $alternate ^= 1;
2723
2724                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2725
2726                 print "</tr>\n";
2727         }
2728         print "</table>\n" .
2729               "</div>";
2730         git_footer_html();
2731 }
2732
2733 sub git_snapshot {
2734
2735         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2736         my $have_snapshot = (defined $ctype && defined $suffix);
2737         if (!$have_snapshot) {
2738                 die_error('403 Permission denied', "Permission denied");
2739         }
2740
2741         if (!defined $hash) {
2742                 $hash = git_get_head_hash($project);
2743         }
2744
2745         my $filename = basename($project) . "-$hash.tar.$suffix";
2746
2747         print $cgi->header(-type => 'application/x-tar',
2748                            -content_encoding => $ctype,
2749                            -content_disposition => "inline; filename=\"$filename\"",
2750                            -status => '200 OK');
2751
2752         my $git_command = git_cmd_str();
2753         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2754                 die_error(undef, "Execute git-tar-tree failed.");
2755         binmode STDOUT, ':raw';
2756         print <$fd>;
2757         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2758         close $fd;
2759
2760 }
2761
2762 sub git_log {
2763         my $head = git_get_head_hash($project);
2764         if (!defined $hash) {
2765                 $hash = $head;
2766         }
2767         if (!defined $page) {
2768                 $page = 0;
2769         }
2770         my $refs = git_get_references();
2771
2772         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2773         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2774                 or die_error(undef, "Open git-rev-list failed");
2775         my @revlist = map { chomp; $_ } <$fd>;
2776         close $fd;
2777
2778         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2779
2780         git_header_html();
2781         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2782
2783         if (!@revlist) {
2784                 my %co = parse_commit($hash);
2785
2786                 git_print_header_div('summary', $project);
2787                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2788         }
2789         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2790                 my $commit = $revlist[$i];
2791                 my $ref = format_ref_marker($refs, $commit);
2792                 my %co = parse_commit($commit);
2793                 next if !%co;
2794                 my %ad = parse_date($co{'author_epoch'});
2795                 git_print_header_div('commit',
2796                                "<span class=\"age\">$co{'age_string'}</span>" .
2797                                esc_html($co{'title'}) . $ref,
2798                                $commit);
2799                 print "<div class=\"title_text\">\n" .
2800                       "<div class=\"log_link\">\n" .
2801                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2802                       " | " .
2803                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2804                       "<br/>\n" .
2805                       "</div>\n" .
2806                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2807                       "</div>\n";
2808
2809                 print "<div class=\"log_body\">\n";
2810                 git_print_simplified_log($co{'comment'});
2811                 print "</div>\n";
2812         }
2813         git_footer_html();
2814 }
2815
2816 sub git_commit {
2817         my %co = parse_commit($hash);
2818         if (!%co) {
2819                 die_error(undef, "Unknown commit object");
2820         }
2821         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2822         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2823
2824         my $parent = $co{'parent'};
2825         if (!defined $parent) {
2826                 $parent = "--root";
2827         }
2828         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2829                 or die_error(undef, "Open git-diff-tree failed");
2830         my @difftree = map { chomp; $_ } <$fd>;
2831         close $fd or die_error(undef, "Reading git-diff-tree failed");
2832
2833         # non-textual hash id's can be cached
2834         my $expires;
2835         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2836                 $expires = "+1d";
2837         }
2838         my $refs = git_get_references();
2839         my $ref = format_ref_marker($refs, $co{'id'});
2840
2841         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2842         my $have_snapshot = (defined $ctype && defined $suffix);
2843
2844         my $formats_nav = '';
2845         if (defined $file_name && defined $co{'parent'}) {
2846                 my $parent = $co{'parent'};
2847                 $formats_nav .=
2848                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2849                                 "blame");
2850         }
2851         git_header_html(undef, $expires);
2852         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2853                            $hash, $co{'tree'}, $hash,
2854                            $formats_nav);
2855
2856         if (defined $co{'parent'}) {
2857                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2858         } else {
2859                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2860         }
2861         print "<div class=\"title_text\">\n" .
2862               "<table cellspacing=\"0\">\n";
2863         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2864               "<tr>" .
2865               "<td></td><td> $ad{'rfc2822'}";
2866         if ($ad{'hour_local'} < 6) {
2867                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2868                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2869         } else {
2870                 printf(" (%02d:%02d %s)",
2871                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2872         }
2873         print "</td>" .
2874               "</tr>\n";
2875         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2876         print "<tr><td></td><td> $cd{'rfc2822'}" .
2877               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2878               "</td></tr>\n";
2879         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2880         print "<tr>" .
2881               "<td>tree</td>" .
2882               "<td class=\"sha1\">" .
2883               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2884                        class => "list"}, $co{'tree'}) .
2885               "</td>" .
2886               "<td class=\"link\">" .
2887               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2888                       "tree");
2889         if ($have_snapshot) {
2890                 print " | " .
2891                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2892         }
2893         print "</td>" .
2894               "</tr>\n";
2895         my $parents = $co{'parents'};
2896         foreach my $par (@$parents) {
2897                 print "<tr>" .
2898                       "<td>parent</td>" .
2899                       "<td class=\"sha1\">" .
2900                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2901                                class => "list"}, $par) .
2902                       "</td>" .
2903                       "<td class=\"link\">" .
2904                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2905                       " | " .
2906                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
2907                       "</td>" .
2908                       "</tr>\n";
2909         }
2910         print "</table>".
2911               "</div>\n";
2912
2913         print "<div class=\"page_body\">\n";
2914         git_print_log($co{'comment'});
2915         print "</div>\n";
2916
2917         git_difftree_body(\@difftree, $hash, $parent);
2918
2919         git_footer_html();
2920 }
2921
2922 sub git_blobdiff {
2923         my $format = shift || 'html';
2924
2925         my $fd;
2926         my @difftree;
2927         my %diffinfo;
2928         my $expires;
2929
2930         # preparing $fd and %diffinfo for git_patchset_body
2931         # new style URI
2932         if (defined $hash_base && defined $hash_parent_base) {
2933                 if (defined $file_name) {
2934                         # read raw output
2935                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
2936                                 "--", $file_name
2937                                 or die_error(undef, "Open git-diff-tree failed");
2938                         @difftree = 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                 } elsif (defined $hash &&
2945                          $hash =~ /[0-9a-fA-F]{40}/) {
2946                         # try to find filename from $hash
2947
2948                         # read filtered raw output
2949                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
2950                                 or die_error(undef, "Open git-diff-tree failed");
2951                         @difftree =
2952                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
2953                                 # $hash == to_id
2954                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
2955                                 map { chomp; $_ } <$fd>;
2956                         close $fd
2957                                 or die_error(undef, "Reading git-diff-tree failed");
2958                         @difftree
2959                                 or die_error('404 Not Found', "Blob diff not found");
2960
2961                 } else {
2962                         die_error('404 Not Found', "Missing one of the blob diff parameters");
2963                 }
2964
2965                 if (@difftree > 1) {
2966                         die_error('404 Not Found', "Ambiguous blob diff specification");
2967                 }
2968
2969                 %diffinfo = parse_difftree_raw_line($difftree[0]);
2970                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
2971                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
2972
2973                 $hash_parent ||= $diffinfo{'from_id'};
2974                 $hash        ||= $diffinfo{'to_id'};
2975
2976                 # non-textual hash id's can be cached
2977                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
2978                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
2979                         $expires = '+1d';
2980                 }
2981
2982                 # open patch output
2983                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
2984                         '-p', $hash_parent_base, $hash_base,
2985                         "--", $file_name
2986                         or die_error(undef, "Open git-diff-tree failed");
2987         }
2988
2989         # old/legacy style URI
2990         if (!%diffinfo && # if new style URI failed
2991             defined $hash && defined $hash_parent) {
2992                 # fake git-diff-tree raw output
2993                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
2994                 $diffinfo{'from_id'} = $hash_parent;
2995                 $diffinfo{'to_id'}   = $hash;
2996                 if (defined $file_name) {
2997                         if (defined $file_parent) {
2998                                 $diffinfo{'status'} = '2';
2999                                 $diffinfo{'from_file'} = $file_parent;
3000                                 $diffinfo{'to_file'}   = $file_name;
3001                         } else { # assume not renamed
3002                                 $diffinfo{'status'} = '1';
3003                                 $diffinfo{'from_file'} = $file_name;
3004                                 $diffinfo{'to_file'}   = $file_name;
3005                         }
3006                 } else { # no filename given
3007                         $diffinfo{'status'} = '2';
3008                         $diffinfo{'from_file'} = $hash_parent;
3009                         $diffinfo{'to_file'}   = $hash;
3010                 }
3011
3012                 # non-textual hash id's can be cached
3013                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3014                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3015                         $expires = '+1d';
3016                 }
3017
3018                 # open patch output
3019                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3020                         or die_error(undef, "Open git-diff failed");
3021         } else  {
3022                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3023                         unless %diffinfo;
3024         }
3025
3026         # header
3027         if ($format eq 'html') {
3028                 my $formats_nav =
3029                         $cgi->a({-href => href(action=>"blobdiff_plain",
3030                                                hash=>$hash, hash_parent=>$hash_parent,
3031                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3032                                                file_name=>$file_name, file_parent=>$file_parent)},
3033                                 "plain");
3034                 git_header_html(undef, $expires);
3035                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3036                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3037                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3038                 } else {
3039                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3040                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3041                 }
3042                 if (defined $file_name) {
3043                         git_print_page_path($file_name, "blob", $hash_base);
3044                 } else {
3045                         print "<div class=\"page_path\"></div>\n";
3046                 }
3047
3048         } elsif ($format eq 'plain') {
3049                 print $cgi->header(
3050                         -type => 'text/plain',
3051                         -charset => 'utf-8',
3052                         -expires => $expires,
3053                         -content_disposition => qq(inline; filename="${file_name}.patch"));
3054
3055                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3056
3057         } else {
3058                 die_error(undef, "Unknown blobdiff format");
3059         }
3060
3061         # patch
3062         if ($format eq 'html') {
3063                 print "<div class=\"page_body\">\n";
3064
3065                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3066                 close $fd;
3067
3068                 print "</div>\n"; # class="page_body"
3069                 git_footer_html();
3070
3071         } else {
3072                 while (my $line = <$fd>) {
3073                         $line =~ s!a/($hash|$hash_parent)!a/$diffinfo{'from_file'}!g;
3074                         $line =~ s!b/($hash|$hash_parent)!b/$diffinfo{'to_file'}!g;
3075
3076                         print $line;
3077
3078                         last if $line =~ m!^\+\+\+!;
3079                 }
3080                 local $/ = undef;
3081                 print <$fd>;
3082                 close $fd;
3083         }
3084 }
3085
3086 sub git_blobdiff_plain {
3087         git_blobdiff('plain');
3088 }
3089
3090 sub git_commitdiff {
3091         my $format = shift || 'html';
3092         my %co = parse_commit($hash);
3093         if (!%co) {
3094                 die_error(undef, "Unknown commit object");
3095         }
3096         if (!defined $hash_parent) {
3097                 $hash_parent = $co{'parent'} || '--root';
3098         }
3099
3100         # read commitdiff
3101         my $fd;
3102         my @difftree;
3103         if ($format eq 'html') {
3104                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3105                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3106                         or die_error(undef, "Open git-diff-tree failed");
3107
3108                 while (chomp(my $line = <$fd>)) {
3109                         # empty line ends raw part of diff-tree output
3110                         last unless $line;
3111                         push @difftree, $line;
3112                 }
3113
3114         } elsif ($format eq 'plain') {
3115                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3116                         '-p', $hash_parent, $hash
3117                         or die_error(undef, "Open git-diff-tree failed");
3118
3119         } else {
3120                 die_error(undef, "Unknown commitdiff format");
3121         }
3122
3123         # non-textual hash id's can be cached
3124         my $expires;
3125         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3126                 $expires = "+1d";
3127         }
3128
3129         # write commit message
3130         if ($format eq 'html') {
3131                 my $refs = git_get_references();
3132                 my $ref = format_ref_marker($refs, $co{'id'});
3133                 my $formats_nav =
3134                         $cgi->a({-href => href(action=>"commitdiff_plain",
3135                                                hash=>$hash, hash_parent=>$hash_parent)},
3136                                 "plain");
3137
3138                 git_header_html(undef, $expires);
3139                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3140                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3141                 git_print_authorship(\%co);
3142                 print "<div class=\"page_body\">\n";
3143                 print "<div class=\"log\">\n";
3144                 git_print_simplified_log($co{'comment'}, 1); # skip title
3145                 print "</div>\n"; # class="log"
3146
3147         } elsif ($format eq 'plain') {
3148                 my $refs = git_get_references("tags");
3149                 my $tagname = git_get_rev_name_tags($hash);
3150                 my $filename = basename($project) . "-$hash.patch";
3151
3152                 print $cgi->header(
3153                         -type => 'text/plain',
3154                         -charset => 'utf-8',
3155                         -expires => $expires,
3156                         -content_disposition => qq(inline; filename="$filename"));
3157                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3158                 print <<TEXT;
3159 From: $co{'author'}
3160 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3161 Subject: $co{'title'}
3162 TEXT
3163                 print "X-Git-Tag: $tagname\n" if $tagname;
3164                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3165
3166                 foreach my $line (@{$co{'comment'}}) {
3167                         print "$line\n";
3168                 }
3169                 print "---\n\n";
3170         }
3171
3172         # write patch
3173         if ($format eq 'html') {
3174                 git_difftree_body(\@difftree, $hash, $hash_parent);
3175                 print "<br/>\n";
3176
3177                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3178                 close $fd;
3179                 print "</div>\n"; # class="page_body"
3180                 git_footer_html();
3181
3182         } elsif ($format eq 'plain') {
3183                 local $/ = undef;
3184                 print <$fd>;
3185                 close $fd
3186                         or print "Reading git-diff-tree failed\n";
3187         }
3188 }
3189
3190 sub git_commitdiff_plain {
3191         git_commitdiff('plain');
3192 }
3193
3194 sub git_history {
3195         if (!defined $hash_base) {
3196                 $hash_base = git_get_head_hash($project);
3197         }
3198         if (!defined $page) {
3199                 $page = 0;
3200         }
3201         my $ftype;
3202         my %co = parse_commit($hash_base);
3203         if (!%co) {
3204                 die_error(undef, "Unknown commit object");
3205         }
3206
3207         my $refs = git_get_references();
3208         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3209
3210         if (!defined $hash && defined $file_name) {
3211                 $hash = git_get_hash_by_path($hash_base, $file_name);
3212         }
3213         if (defined $hash) {
3214                 $ftype = git_get_type($hash);
3215         }
3216
3217         open my $fd, "-|",
3218                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3219                         or die_error(undef, "Open git-rev-list-failed");
3220         my @revlist = map { chomp; $_ } <$fd>;
3221         close $fd
3222                 or die_error(undef, "Reading git-rev-list failed");
3223
3224         my $paging_nav = '';
3225         if ($page > 0) {
3226                 $paging_nav .=
3227                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3228                                                file_name=>$file_name)},
3229                                 "first");
3230                 $paging_nav .= " &sdot; " .
3231                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3232                                                file_name=>$file_name, page=>$page-1),
3233                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3234         } else {
3235                 $paging_nav .= "first";
3236                 $paging_nav .= " &sdot; prev";
3237         }
3238         if ($#revlist >= (100 * ($page+1)-1)) {
3239                 $paging_nav .= " &sdot; " .
3240                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3241                                                file_name=>$file_name, page=>$page+1),
3242                                  -accesskey => "n", -title => "Alt-n"}, "next");
3243         } else {
3244                 $paging_nav .= " &sdot; next";
3245         }
3246         my $next_link = '';
3247         if ($#revlist >= (100 * ($page+1)-1)) {
3248                 $next_link =
3249                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3250                                                file_name=>$file_name, page=>$page+1),
3251                                  -title => "Alt-n"}, "next");
3252         }
3253
3254         git_header_html();
3255         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3256         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3257         git_print_page_path($file_name, $ftype, $hash_base);
3258
3259         git_history_body(\@revlist, ($page * 100), $#revlist,
3260                          $refs, $hash_base, $ftype, $next_link);
3261
3262         git_footer_html();
3263 }
3264
3265 sub git_search {
3266         if (!defined $searchtext) {
3267                 die_error(undef, "Text field empty");
3268         }
3269         if (!defined $hash) {
3270                 $hash = git_get_head_hash($project);
3271         }
3272         my %co = parse_commit($hash);
3273         if (!%co) {
3274                 die_error(undef, "Unknown commit object");
3275         }
3276
3277         my $commit_search = 1;
3278         my $author_search = 0;
3279         my $committer_search = 0;
3280         my $pickaxe_search = 0;
3281         if ($searchtext =~ s/^author\\://i) {
3282                 $author_search = 1;
3283         } elsif ($searchtext =~ s/^committer\\://i) {
3284                 $committer_search = 1;
3285         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3286                 $commit_search = 0;
3287                 $pickaxe_search = 1;
3288
3289                 # pickaxe may take all resources of your box and run for several minutes
3290                 # with every query - so decide by yourself how public you make this feature
3291                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3292                 if (!$have_pickaxe) {
3293                         die_error('403 Permission denied', "Permission denied");
3294                 }
3295         }
3296         git_header_html();
3297         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3298         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3299
3300         print "<table cellspacing=\"0\">\n";
3301         my $alternate = 0;
3302         if ($commit_search) {
3303                 $/ = "\0";
3304                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3305                 while (my $commit_text = <$fd>) {
3306                         if (!grep m/$searchtext/i, $commit_text) {
3307                                 next;
3308                         }
3309                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3310                                 next;
3311                         }
3312                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3313                                 next;
3314                         }
3315                         my @commit_lines = split "\n", $commit_text;
3316                         my %co = parse_commit(undef, \@commit_lines);
3317                         if (!%co) {
3318                                 next;
3319                         }
3320                         if ($alternate) {
3321                                 print "<tr class=\"dark\">\n";
3322                         } else {
3323                                 print "<tr class=\"light\">\n";
3324                         }
3325                         $alternate ^= 1;
3326                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3327                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3328                               "<td>" .
3329                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3330                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3331                         my $comment = $co{'comment'};
3332                         foreach my $line (@$comment) {
3333                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3334                                         my $lead = esc_html($1) || "";
3335                                         $lead = chop_str($lead, 30, 10);
3336                                         my $match = esc_html($2) || "";
3337                                         my $trail = esc_html($3) || "";
3338                                         $trail = chop_str($trail, 30, 10);
3339                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3340                                         print chop_str($text, 80, 5) . "<br/>\n";
3341                                 }
3342                         }
3343                         print "</td>\n" .
3344                               "<td class=\"link\">" .
3345                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3346                               " | " .
3347                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3348                         print "</td>\n" .
3349                               "</tr>\n";
3350                 }
3351                 close $fd;
3352         }
3353
3354         if ($pickaxe_search) {
3355                 $/ = "\n";
3356                 my $git_command = git_cmd_str();
3357                 open my $fd, "-|", "$git_command rev-list $hash | " .
3358                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3359                 undef %co;
3360                 my @files;
3361                 while (my $line = <$fd>) {
3362                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3363                                 my %set;
3364                                 $set{'file'} = $6;
3365                                 $set{'from_id'} = $3;
3366                                 $set{'to_id'} = $4;
3367                                 $set{'id'} = $set{'to_id'};
3368                                 if ($set{'id'} =~ m/0{40}/) {
3369                                         $set{'id'} = $set{'from_id'};
3370                                 }
3371                                 if ($set{'id'} =~ m/0{40}/) {
3372                                         next;
3373                                 }
3374                                 push @files, \%set;
3375                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3376                                 if (%co) {
3377                                         if ($alternate) {
3378                                                 print "<tr class=\"dark\">\n";
3379                                         } else {
3380                                                 print "<tr class=\"light\">\n";
3381                                         }
3382                                         $alternate ^= 1;
3383                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3384                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3385                                               "<td>" .
3386                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3387                                                       -class => "list subject"},
3388                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3389                                         while (my $setref = shift @files) {
3390                                                 my %set = %$setref;
3391                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3392                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3393                                                               -class => "list"},
3394                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3395                                                       "<br/>\n";
3396                                         }
3397                                         print "</td>\n" .
3398                                               "<td class=\"link\">" .
3399                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3400                                               " | " .
3401                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3402                                         print "</td>\n" .
3403                                               "</tr>\n";
3404                                 }
3405                                 %co = parse_commit($1);
3406                         }
3407                 }
3408                 close $fd;
3409         }
3410         print "</table>\n";
3411         git_footer_html();
3412 }
3413
3414 sub git_shortlog {
3415         my $head = git_get_head_hash($project);
3416         if (!defined $hash) {
3417                 $hash = $head;
3418         }
3419         if (!defined $page) {
3420                 $page = 0;
3421         }
3422         my $refs = git_get_references();
3423
3424         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3425         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3426                 or die_error(undef, "Open git-rev-list failed");
3427         my @revlist = map { chomp; $_ } <$fd>;
3428         close $fd;
3429
3430         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3431         my $next_link = '';
3432         if ($#revlist >= (100 * ($page+1)-1)) {
3433                 $next_link =
3434                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3435                                  -title => "Alt-n"}, "next");
3436         }
3437
3438
3439         git_header_html();
3440         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3441         git_print_header_div('summary', $project);
3442
3443         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3444
3445         git_footer_html();
3446 }
3447
3448 ## ......................................................................
3449 ## feeds (RSS, OPML)
3450
3451 sub git_rss {
3452         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3453         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3454                 or die_error(undef, "Open git-rev-list failed");
3455         my @revlist = map { chomp; $_ } <$fd>;
3456         close $fd or die_error(undef, "Reading git-rev-list failed");
3457         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3458         print <<XML;
3459 <?xml version="1.0" encoding="utf-8"?>
3460 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3461 <channel>
3462 <title>$project $my_uri $my_url</title>
3463 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3464 <description>$project log</description>
3465 <language>en</language>
3466 XML
3467
3468         for (my $i = 0; $i <= $#revlist; $i++) {
3469                 my $commit = $revlist[$i];
3470                 my %co = parse_commit($commit);
3471                 # we read 150, we always show 30 and the ones more recent than 48 hours
3472                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3473                         last;
3474                 }
3475                 my %cd = parse_date($co{'committer_epoch'});
3476                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3477                         $co{'parent'}, $co{'id'}
3478                         or next;
3479                 my @difftree = map { chomp; $_ } <$fd>;
3480                 close $fd
3481                         or next;
3482                 print "<item>\n" .
3483                       "<title>" .
3484                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3485                       "</title>\n" .
3486                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3487                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3488                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3489                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3490                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3491                       "<content:encoded>" .
3492                       "<![CDATA[\n";
3493                 my $comment = $co{'comment'};
3494                 foreach my $line (@$comment) {
3495                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3496                         print "$line<br/>\n";
3497                 }
3498                 print "<br/>\n";
3499                 foreach my $line (@difftree) {
3500                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3501                                 next;
3502                         }
3503                         my $file = validate_input(unquote($7));
3504                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3505                         print "$file<br/>\n";
3506                 }
3507                 print "]]>\n" .
3508                       "</content:encoded>\n" .
3509                       "</item>\n";
3510         }
3511         print "</channel></rss>";
3512 }
3513
3514 sub git_opml {
3515         my @list = git_get_projects_list();
3516
3517         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3518         print <<XML;
3519 <?xml version="1.0" encoding="utf-8"?>
3520 <opml version="1.0">
3521 <head>
3522   <title>$site_name Git OPML Export</title>
3523 </head>
3524 <body>
3525 <outline text="git RSS feeds">
3526 XML
3527
3528         foreach my $pr (@list) {
3529                 my %proj = %$pr;
3530                 my $head = git_get_head_hash($proj{'path'});
3531                 if (!defined $head) {
3532                         next;
3533                 }
3534                 $git_dir = "$projectroot/$proj{'path'}";
3535                 my %co = parse_commit($head);
3536                 if (!%co) {
3537                         next;
3538                 }
3539
3540                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3541                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3542                 my $html = "$my_url?p=$proj{'path'};a=summary";
3543                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3544         }
3545         print <<XML;
3546 </outline>
3547 </body>
3548 </opml>
3549 XML
3550 }