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 $projects_list ||= $projectroot;
 193
 194 # ======================================================================
 195 # input validation and dispatch
 196 our $action = $cgi->param('a');
 197 if (defined $action) {
 198         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 199                 die_error(undef, "Invalid action parameter");
 200         }
 201 }
 202
 203 our $project = $cgi->param('p');
 204 if (defined $project) {
 205         if (!validate_input($project) ||
 206             !(-d "$projectroot/$project") ||
 207             !(-e "$projectroot/$project/HEAD") ||
 208             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 209             ($strict_export && !project_in_list($project))) {
 210                 undef $project;
 211                 die_error(undef, "No such project");
 212         }
 213 }
 214
 215 our $file_name = $cgi->param('f');
 216 if (defined $file_name) {
 217         if (!validate_input($file_name)) {
 218                 die_error(undef, "Invalid file parameter");
 219         }
 220 }
 221
 222 our $file_parent = $cgi->param('fp');
 223 if (defined $file_parent) {
 224         if (!validate_input($file_parent)) {
 225                 die_error(undef, "Invalid file parent parameter");
 226         }
 227 }
 228
 229 our $hash = $cgi->param('h');
 230 if (defined $hash) {
 231         if (!validate_input($hash)) {
 232                 die_error(undef, "Invalid hash parameter");
 233         }
 234 }
 235
 236 our $hash_parent = $cgi->param('hp');
 237 if (defined $hash_parent) {
 238         if (!validate_input($hash_parent)) {
 239                 die_error(undef, "Invalid hash parent parameter");
 240         }
 241 }
 242
 243 our $hash_base = $cgi->param('hb');
 244 if (defined $hash_base) {
 245         if (!validate_input($hash_base)) {
 246                 die_error(undef, "Invalid hash base parameter");
 247         }
 248 }
 249
 250 our $hash_parent_base = $cgi->param('hpb');
 251 if (defined $hash_parent_base) {
 252         if (!validate_input($hash_parent_base)) {
 253                 die_error(undef, "Invalid hash parent base parameter");
 254         }
 255 }
 256
 257 our $page = $cgi->param('pg');
 258 if (defined $page) {
 259         if ($page =~ m/[^0-9]/) {
 260                 die_error(undef, "Invalid page parameter");
 261         }
 262 }
 263
 264 our $searchtext = $cgi->param('s');
 265 if (defined $searchtext) {
 266         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 267                 die_error(undef, "Invalid search parameter");
 268         }
 269         $searchtext = quotemeta $searchtext;
 270 }
 271
 272 # now read PATH_INFO and use it as alternative to parameters
 273 sub evaluate_path_info {
 274         return if defined $project;
 275         my $path_info = $ENV{"PATH_INFO"};
 276         return if !$path_info;
 277         $path_info =~ s,^/+,,;
 278         return if !$path_info;
 279         # find which part of PATH_INFO is project
 280         $project = $path_info;
 281         $project =~ s,/+$,,;
 282         while ($project && !-e "$projectroot/$project/HEAD") {
 283                 $project =~ s,/*[^/]*$,,;
 284         }
 285         # validate project
 286         $project = validate_input($project);
 287         if (!$project ||
 288             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 289             ($strict_export && !project_in_list($project))) {
 290                 undef $project;
 291                 return;
 292         }
 293         # do not change any parameters if an action is given using the query string
 294         return if $action;
 295         $path_info =~ s,^$project/*,,;
 296         my ($refname, $pathname) = split(/:/, $path_info, 2);
 297         if (defined $pathname) {
 298                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 299                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 300                 $pathname =~ s,^/+,,;
 301                 if (!$pathname || substr($pathname, -1) eq "/") {
 302                         $action  ||= "tree";
 303                 } else {
 304                         $action  ||= "blob_plain";
 305                 }
 306                 $hash_base ||= validate_input($refname);
 307                 $file_name ||= validate_input($pathname);
 308         } elsif (defined $refname) {
 309                 # we got "project.git/branch"
 310                 $action ||= "shortlog";
 311                 $hash   ||= validate_input($refname);
 312         }
 313 }
 314 evaluate_path_info();
 315
 316 # path to the current git repository
 317 our $git_dir;
 318 $git_dir = "$projectroot/$project" if $project;
 319
 320 # dispatch
 321 my %actions = (
 322         "blame" => \&git_blame2,
 323         "blobdiff" => \&git_blobdiff,
 324         "blobdiff_plain" => \&git_blobdiff_plain,
 325         "blob" => \&git_blob,
 326         "blob_plain" => \&git_blob_plain,
 327         "commitdiff" => \&git_commitdiff,
 328         "commitdiff_plain" => \&git_commitdiff_plain,
 329         "commit" => \&git_commit,
 330         "heads" => \&git_heads,
 331         "history" => \&git_history,
 332         "log" => \&git_log,
 333         "rss" => \&git_rss,
 334         "search" => \&git_search,
 335         "shortlog" => \&git_shortlog,
 336         "summary" => \&git_summary,
 337         "tag" => \&git_tag,
 338         "tags" => \&git_tags,
 339         "tree" => \&git_tree,
 340         "snapshot" => \&git_snapshot,
 341         # those below don't need $project
 342         "opml" => \&git_opml,
 343         "project_list" => \&git_project_list,
 344         "project_index" => \&git_project_index,
 345 );
 346
 347 if (defined $project) {
 348         $action ||= 'summary';
 349 } else {
 350         $action ||= 'project_list';
 351 }
 352 if (!defined($actions{$action})) {
 353         die_error(undef, "Unknown action");
 354 }
 355 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 356     !$project) {
 357         die_error(undef, "Project needed");
 358 }
 359 $actions{$action}->();
 360 exit;
 361
 362 ## ======================================================================
 363 ## action links
 364
 365 sub href(%) {
 366         my %params = @_;
 367
 368         my @mapping = (
 369                 project => "p",
 370                 action => "a",
 371                 file_name => "f",
 372                 file_parent => "fp",
 373                 hash => "h",
 374                 hash_parent => "hp",
 375                 hash_base => "hb",
 376                 hash_parent_base => "hpb",
 377                 page => "pg",
 378                 order => "o",
 379                 searchtext => "s",
 380         );
 381         my %mapping = @mapping;
 382
 383         $params{'project'} = $project unless exists $params{'project'};
 384
 385         my @result = ();
 386         for (my $i = 0; $i < @mapping; $i += 2) {
 387                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 388                 if (defined $params{$name}) {
 389                         push @result, $symbol . "=" . esc_param($params{$name});
 390                 }
 391         }
 392         return "$my_uri?" . join(';', @result);
 393 }
 394
 395
 396 ## ======================================================================
 397 ## validation, quoting/unquoting and escaping
 398
 399 sub validate_input {
 400         my $input = shift;
 401
 402         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 403                 return $input;
 404         }
 405         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 406                 return undef;
 407         }
 408         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 409                 return undef;
 410         }
 411         return $input;
 412 }
 413
 414 # quote unsafe chars, but keep the slash, even when it's not
 415 # correct, but quoted slashes look too horrible in bookmarks
 416 sub esc_param {
 417         my $str = shift;
 418         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 419         $str =~ s/\+/%2B/g;
 420         $str =~ s/ /\+/g;
 421         return $str;
 422 }
 423
 424 # replace invalid utf8 character with SUBSTITUTION sequence
 425 sub esc_html {
 426         my $str = shift;
 427         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 428         $str = escapeHTML($str);
 429         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 430         return $str;
 431 }
 432
 433 # git may return quoted and escaped filenames
 434 sub unquote {
 435         my $str = shift;
 436         if ($str =~ m/^"(.*)"$/) {
 437                 $str = $1;
 438                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 439         }
 440         return $str;
 441 }
 442
 443 # escape tabs (convert tabs to spaces)
 444 sub untabify {
 445         my $line = shift;
 446
 447         while ((my $pos = index($line, "\t")) != -1) {
 448                 if (my $count = (8 - ($pos % 8))) {
 449                         my $spaces = ' ' x $count;
 450                         $line =~ s/\t/$spaces/;
 451                 }
 452         }
 453
 454         return $line;
 455 }
 456
 457 sub project_in_list {
 458         my $project = shift;
 459         my @list = git_get_projects_list();
 460         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 461 }
 462
 463 ## ----------------------------------------------------------------------
 464 ## HTML aware string manipulation
 465
 466 sub chop_str {
 467         my $str = shift;
 468         my $len = shift;
 469         my $add_len = shift || 10;
 470
 471         # allow only $len chars, but don't cut a word if it would fit in $add_len
 472         # if it doesn't fit, cut it if it's still longer than the dots we would add
 473         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 474         my $body = $1;
 475         my $tail = $2;
 476         if (length($tail) > 4) {
 477                 $tail = " ...";
 478                 $body =~ s/&[^;]*$//; # remove chopped character entities
 479         }
 480         return "$body$tail";
 481 }
 482
 483 ## ----------------------------------------------------------------------
 484 ## functions returning short strings
 485
 486 # CSS class for given age value (in seconds)
 487 sub age_class {
 488         my $age = shift;
 489
 490         if ($age < 60*60*2) {
 491                 return "age0";
 492         } elsif ($age < 60*60*24*2) {
 493                 return "age1";
 494         } else {
 495                 return "age2";
 496         }
 497 }
 498
 499 # convert age in seconds to "nn units ago" string
 500 sub age_string {
 501         my $age = shift;
 502         my $age_str;
 503
 504         if ($age > 60*60*24*365*2) {
 505                 $age_str = (int $age/60/60/24/365);
 506                 $age_str .= " years ago";
 507         } elsif ($age > 60*60*24*(365/12)*2) {
 508                 $age_str = int $age/60/60/24/(365/12);
 509                 $age_str .= " months ago";
 510         } elsif ($age > 60*60*24*7*2) {
 511                 $age_str = int $age/60/60/24/7;
 512                 $age_str .= " weeks ago";
 513         } elsif ($age > 60*60*24*2) {
 514                 $age_str = int $age/60/60/24;
 515                 $age_str .= " days ago";
 516         } elsif ($age > 60*60*2) {
 517                 $age_str = int $age/60/60;
 518                 $age_str .= " hours ago";
 519         } elsif ($age > 60*2) {
 520                 $age_str = int $age/60;
 521                 $age_str .= " min ago";
 522         } elsif ($age > 2) {
 523                 $age_str = int $age;
 524                 $age_str .= " sec ago";
 525         } else {
 526                 $age_str .= " right now";
 527         }
 528         return $age_str;
 529 }
 530
 531 # convert file mode in octal to symbolic file mode string
 532 sub mode_str {
 533         my $mode = oct shift;
 534
 535         if (S_ISDIR($mode & S_IFMT)) {
 536                 return 'drwxr-xr-x';
 537         } elsif (S_ISLNK($mode)) {
 538                 return 'lrwxrwxrwx';
 539         } elsif (S_ISREG($mode)) {
 540                 # git cares only about the executable bit
 541                 if ($mode & S_IXUSR) {
 542                         return '-rwxr-xr-x';
 543                 } else {
 544                         return '-rw-r--r--';
 545                 };
 546         } else {
 547                 return '----------';
 548         }
 549 }
 550
 551 # convert file mode in octal to file type string
 552 sub file_type {
 553         my $mode = shift;
 554
 555         if ($mode !~ m/^[0-7]+$/) {
 556                 return $mode;
 557         } else {
 558                 $mode = oct $mode;
 559         }
 560
 561         if (S_ISDIR($mode & S_IFMT)) {
 562                 return "directory";
 563         } elsif (S_ISLNK($mode)) {
 564                 return "symlink";
 565         } elsif (S_ISREG($mode)) {
 566                 return "file";
 567         } else {
 568                 return "unknown";
 569         }
 570 }
 571
 572 ## ----------------------------------------------------------------------
 573 ## functions returning short HTML fragments, or transforming HTML fragments
 574 ## which don't beling to other sections
 575
 576 # format line of commit message or tag comment
 577 sub format_log_line_html {
 578         my $line = shift;
 579
 580         $line = esc_html($line);
 581         $line =~ s/ /&nbsp;/g;
 582         if ($line =~ m/([0-9a-fA-F]{40})/) {
 583                 my $hash_text = $1;
 584                 if (git_get_type($hash_text) eq "commit") {
 585                         my $link =
 586                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 587                                         -class => "text"}, $hash_text);
 588                         $line =~ s/$hash_text/$link/;
 589                 }
 590         }
 591         return $line;
 592 }
 593
 594 # format marker of refs pointing to given object
 595 sub format_ref_marker {
 596         my ($refs, $id) = @_;
 597         my $markers = '';
 598
 599         if (defined $refs->{$id}) {
 600                 foreach my $ref (@{$refs->{$id}}) {
 601                         my ($type, $name) = qw();
 602                         # e.g. tags/v2.6.11 or heads/next
 603                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 604                                 $type = $1;
 605                                 $name = $2;
 606                         } else {
 607                                 $type = "ref";
 608                                 $name = $ref;
 609                         }
 610
 611                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 612                 }
 613         }
 614
 615         if ($markers) {
 616                 return ' <span class="refs">'. $markers . '</span>';
 617         } else {
 618                 return "";
 619         }
 620 }
 621
 622 # format, perhaps shortened and with markers, title line
 623 sub format_subject_html {
 624         my ($long, $short, $href, $extra) = @_;
 625         $extra = '' unless defined($extra);
 626
 627         if (length($short) < length($long)) {
 628                 return $cgi->a({-href => $href, -class => "list subject",
 629                                 -title => $long},
 630                        esc_html($short) . $extra);
 631         } else {
 632                 return $cgi->a({-href => $href, -class => "list subject"},
 633                        esc_html($long)  . $extra);
 634         }
 635 }
 636
 637 sub format_diff_line {
 638         my $line = shift;
 639         my $char = substr($line, 0, 1);
 640         my $diff_class = "";
 641
 642         chomp $line;
 643
 644         if ($char eq '+') {
 645                 $diff_class = " add";
 646         } elsif ($char eq "-") {
 647                 $diff_class = " rem";
 648         } elsif ($char eq "@") {
 649                 $diff_class = " chunk_header";
 650         } elsif ($char eq "\\") {
 651                 $diff_class = " incomplete";
 652         }
 653         $line = untabify($line);
 654         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 655 }
 656
 657 ## ----------------------------------------------------------------------
 658 ## git utility subroutines, invoking git commands
 659
 660 # returns path to the core git executable and the --git-dir parameter as list
 661 sub git_cmd {
 662         return $GIT, '--git-dir='.$git_dir;
 663 }
 664
 665 # returns path to the core git executable and the --git-dir parameter as string
 666 sub git_cmd_str {
 667         return join(' ', git_cmd());
 668 }
 669
 670 # get HEAD ref of given project as hash
 671 sub git_get_head_hash {
 672         my $project = shift;
 673         my $o_git_dir = $git_dir;
 674         my $retval = undef;
 675         $git_dir = "$projectroot/$project";
 676         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 677                 my $head = <$fd>;
 678                 close $fd;
 679                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 680                         $retval = $1;
 681                 }
 682         }
 683         if (defined $o_git_dir) {
 684                 $git_dir = $o_git_dir;
 685         }
 686         return $retval;
 687 }
 688
 689 # get type of given object
 690 sub git_get_type {
 691         my $hash = shift;
 692
 693         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 694         my $type = <$fd>;
 695         close $fd or return;
 696         chomp $type;
 697         return $type;
 698 }
 699
 700 sub git_get_project_config {
 701         my ($key, $type) = @_;
 702
 703         return unless ($key);
 704         $key =~ s/^gitweb\.//;
 705         return if ($key =~ m/\W/);
 706
 707         my @x = (git_cmd(), 'repo-config');
 708         if (defined $type) { push @x, $type; }
 709         push @x, "--get";
 710         push @x, "gitweb.$key";
 711         my $val = qx(@x);
 712         chomp $val;
 713         return ($val);
 714 }
 715
 716 # get hash of given path at given ref
 717 sub git_get_hash_by_path {
 718         my $base = shift;
 719         my $path = shift || return undef;
 720
 721         my $tree = $base;
 722
 723         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 724                 or die_error(undef, "Open git-ls-tree failed");
 725         my $line = <$fd>;
 726         close $fd or return undef;
 727
 728         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 729         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 730         return $3;
 731 }
 732
 733 ## ......................................................................
 734 ## git utility functions, directly accessing git repository
 735
 736 sub git_get_project_description {
 737         my $path = shift;
 738
 739         open my $fd, "$projectroot/$path/description" or return undef;
 740         my $descr = <$fd>;
 741         close $fd;
 742         chomp $descr;
 743         return $descr;
 744 }
 745
 746 sub git_get_project_url_list {
 747         my $path = shift;
 748
 749         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 750         my @git_project_url_list = map { chomp; $_ } <$fd>;
 751         close $fd;
 752
 753         return wantarray ? @git_project_url_list : \@git_project_url_list;
 754 }
 755
 756 sub git_get_projects_list {
 757         my @list;
 758
 759         if (-d $projects_list) {
 760                 # search in directory
 761                 my $dir = $projects_list;
 762                 my $pfxlen = length("$dir");
 763
 764                 File::Find::find({
 765                         follow_fast => 1, # follow symbolic links
 766                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 767                         wanted => sub {
 768                                 # skip project-list toplevel, if we get it.
 769                                 return if (m!^[/.]$!);
 770                                 # only directories can be git repositories
 771                                 return unless (-d $_);
 772
 773                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 774                                 # we check related file in $projectroot
 775                                 if (-e "$projectroot/$subdir/HEAD" && (!$export_ok ||
 776                                     -e "$projectroot/$subdir/$export_ok")) {
 777                                         push @list, { path => $subdir };
 778                                         $File::Find::prune = 1;
 779                                 }
 780                         },
 781                 }, "$dir");
 782
 783         } elsif (-f $projects_list) {
 784                 # read from file(url-encoded):
 785                 # 'git%2Fgit.git Linus+Torvalds'
 786                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 787                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 788                 open my ($fd), $projects_list or return undef;
 789                 while (my $line = <$fd>) {
 790                         chomp $line;
 791                         my ($path, $owner) = split ' ', $line;
 792                         $path = unescape($path);
 793                         $owner = unescape($owner);
 794                         if (!defined $path) {
 795                                 next;
 796                         }
 797                         if (-e "$projectroot/$path/HEAD" && (!$export_ok ||
 798                             -e "$projectroot/$path/$export_ok")) {
 799                                 my $pr = {
 800                                         path => $path,
 801                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 802                                 };
 803                                 push @list, $pr
 804                         }
 805                 }
 806                 close $fd;
 807         }
 808         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 809         return @list;
 810 }
 811
 812 sub git_get_project_owner {
 813         my $project = shift;
 814         my $owner;
 815
 816         return undef unless $project;
 817
 818         # read from file (url-encoded):
 819         # 'git%2Fgit.git Linus+Torvalds'
 820         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 821         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 822         if (-f $projects_list) {
 823                 open (my $fd , $projects_list);
 824                 while (my $line = <$fd>) {
 825                         chomp $line;
 826                         my ($pr, $ow) = split ' ', $line;
 827                         $pr = unescape($pr);
 828                         $ow = unescape($ow);
 829                         if ($pr eq $project) {
 830                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 831                                 last;
 832                         }
 833                 }
 834                 close $fd;
 835         }
 836         if (!defined $owner) {
 837                 $owner = get_file_owner("$projectroot/$project");
 838         }
 839
 840         return $owner;
 841 }
 842
 843 sub git_get_references {
 844         my $type = shift || "";
 845         my %refs;
 846         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 847         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 848         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
 849                 or return;
 850
 851         while (my $line = <$fd>) {
 852                 chomp $line;
 853                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 854                         if (defined $refs{$1}) {
 855                                 push @{$refs{$1}}, $2;
 856                         } else {
 857                                 $refs{$1} = [ $2 ];
 858                         }
 859                 }
 860         }
 861         close $fd or return;
 862         return \%refs;
 863 }
 864
 865 sub git_get_rev_name_tags {
 866         my $hash = shift || return undef;
 867
 868         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 869                 or return;
 870         my $name_rev = <$fd>;
 871         close $fd;
 872
 873         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 874                 return $1;
 875         } else {
 876                 # catches also '$hash undefined' output
 877                 return undef;
 878         }
 879 }
 880
 881 ## ----------------------------------------------------------------------
 882 ## parse to hash functions
 883
 884 sub parse_date {
 885         my $epoch = shift;
 886         my $tz = shift || "-0000";
 887
 888         my %date;
 889         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 890         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 891         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 892         $date{'hour'} = $hour;
 893         $date{'minute'} = $min;
 894         $date{'mday'} = $mday;
 895         $date{'day'} = $days[$wday];
 896         $date{'month'} = $months[$mon];
 897         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 898                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 899         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 900                              $mday, $months[$mon], $hour ,$min;
 901
 902         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 903         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 904         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 905         $date{'hour_local'} = $hour;
 906         $date{'minute_local'} = $min;
 907         $date{'tz_local'} = $tz;
 908         return %date;
 909 }
 910
 911 sub parse_tag {
 912         my $tag_id = shift;
 913         my %tag;
 914         my @comment;
 915
 916         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 917         $tag{'id'} = $tag_id;
 918         while (my $line = <$fd>) {
 919                 chomp $line;
 920                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 921                         $tag{'object'} = $1;
 922                 } elsif ($line =~ m/^type (.+)$/) {
 923                         $tag{'type'} = $1;
 924                 } elsif ($line =~ m/^tag (.+)$/) {
 925                         $tag{'name'} = $1;
 926                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 927                         $tag{'author'} = $1;
 928                         $tag{'epoch'} = $2;
 929                         $tag{'tz'} = $3;
 930                 } elsif ($line =~ m/--BEGIN/) {
 931                         push @comment, $line;
 932                         last;
 933                 } elsif ($line eq "") {
 934                         last;
 935                 }
 936         }
 937         push @comment, <$fd>;
 938         $tag{'comment'} = \@comment;
 939         close $fd or return;
 940         if (!defined $tag{'name'}) {
 941                 return
 942         };
 943         return %tag
 944 }
 945
 946 sub parse_commit {
 947         my $commit_id = shift;
 948         my $commit_text = shift;
 949
 950         my @commit_lines;
 951         my %co;
 952
 953         if (defined $commit_text) {
 954                 @commit_lines = @$commit_text;
 955         } else {
 956                 $/ = "\0";
 957                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
 958                         or return;
 959                 @commit_lines = split '\n', <$fd>;
 960                 close $fd or return;
 961                 $/ = "\n";
 962                 pop @commit_lines;
 963         }
 964         my $header = shift @commit_lines;
 965         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 966                 return;
 967         }
 968         ($co{'id'}, my @parents) = split ' ', $header;
 969         $co{'parents'} = \@parents;
 970         $co{'parent'} = $parents[0];
 971         while (my $line = shift @commit_lines) {
 972                 last if $line eq "\n";
 973                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 974                         $co{'tree'} = $1;
 975                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 976                         $co{'author'} = $1;
 977                         $co{'author_epoch'} = $2;
 978                         $co{'author_tz'} = $3;
 979                         if ($co{'author'} =~ m/^([^<]+) </) {
 980                                 $co{'author_name'} = $1;
 981                         } else {
 982                                 $co{'author_name'} = $co{'author'};
 983                         }
 984                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 985                         $co{'committer'} = $1;
 986                         $co{'committer_epoch'} = $2;
 987                         $co{'committer_tz'} = $3;
 988                         $co{'committer_name'} = $co{'committer'};
 989                         $co{'committer_name'} =~ s/ <.*//;
 990                 }
 991         }
 992         if (!defined $co{'tree'}) {
 993                 return;
 994         };
 995
 996         foreach my $title (@commit_lines) {
 997                 $title =~ s/^    //;
 998                 if ($title ne "") {
 999                         $co{'title'} = chop_str($title, 80, 5);
1000                         # remove leading stuff of merges to make the interesting part visible
1001                         if (length($title) > 50) {
1002                                 $title =~ s/^Automatic //;
1003                                 $title =~ s/^merge (of|with) /Merge ... /i;
1004                                 if (length($title) > 50) {
1005                                         $title =~ s/(http|rsync):\/\///;
1006                                 }
1007                                 if (length($title) > 50) {
1008                                         $title =~ s/(master|www|rsync)\.//;
1009                                 }
1010                                 if (length($title) > 50) {
1011                                         $title =~ s/kernel.org:?//;
1012                                 }
1013                                 if (length($title) > 50) {
1014                                         $title =~ s/\/pub\/scm//;
1015                                 }
1016                         }
1017                         $co{'title_short'} = chop_str($title, 50, 5);
1018                         last;
1019                 }
1020         }
1021         # remove added spaces
1022         foreach my $line (@commit_lines) {
1023                 $line =~ s/^    //;
1024         }
1025         $co{'comment'} = \@commit_lines;
1026
1027         my $age = time - $co{'committer_epoch'};
1028         $co{'age'} = $age;
1029         $co{'age_string'} = age_string($age);
1030         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1031         if ($age > 60*60*24*7*2) {
1032                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1033                 $co{'age_string_age'} = $co{'age_string'};
1034         } else {
1035                 $co{'age_string_date'} = $co{'age_string'};
1036                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1037         }
1038         return %co;
1039 }
1040
1041 # parse ref from ref_file, given by ref_id, with given type
1042 sub parse_ref {
1043         my $ref_file = shift;
1044         my $ref_id = shift;
1045         my $type = shift || git_get_type($ref_id);
1046         my %ref_item;
1047
1048         $ref_item{'type'} = $type;
1049         $ref_item{'id'} = $ref_id;
1050         $ref_item{'epoch'} = 0;
1051         $ref_item{'age'} = "unknown";
1052         if ($type eq "tag") {
1053                 my %tag = parse_tag($ref_id);
1054                 $ref_item{'comment'} = $tag{'comment'};
1055                 if ($tag{'type'} eq "commit") {
1056                         my %co = parse_commit($tag{'object'});
1057                         $ref_item{'epoch'} = $co{'committer_epoch'};
1058                         $ref_item{'age'} = $co{'age_string'};
1059                 } elsif (defined($tag{'epoch'})) {
1060                         my $age = time - $tag{'epoch'};
1061                         $ref_item{'epoch'} = $tag{'epoch'};
1062                         $ref_item{'age'} = age_string($age);
1063                 }
1064                 $ref_item{'reftype'} = $tag{'type'};
1065                 $ref_item{'name'} = $tag{'name'};
1066                 $ref_item{'refid'} = $tag{'object'};
1067         } elsif ($type eq "commit"){
1068                 my %co = parse_commit($ref_id);
1069                 $ref_item{'reftype'} = "commit";
1070                 $ref_item{'name'} = $ref_file;
1071                 $ref_item{'title'} = $co{'title'};
1072                 $ref_item{'refid'} = $ref_id;
1073                 $ref_item{'epoch'} = $co{'committer_epoch'};
1074                 $ref_item{'age'} = $co{'age_string'};
1075         } else {
1076                 $ref_item{'reftype'} = $type;
1077                 $ref_item{'name'} = $ref_file;
1078                 $ref_item{'refid'} = $ref_id;
1079         }
1080
1081         return %ref_item;
1082 }
1083
1084 # parse line of git-diff-tree "raw" output
1085 sub parse_difftree_raw_line {
1086         my $line = shift;
1087         my %res;
1088
1089         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1090         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1091         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1092                 $res{'from_mode'} = $1;
1093                 $res{'to_mode'} = $2;
1094                 $res{'from_id'} = $3;
1095                 $res{'to_id'} = $4;
1096                 $res{'status'} = $5;
1097                 $res{'similarity'} = $6;
1098                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1099                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1100                 } else {
1101                         $res{'file'} = unquote($7);
1102                 }
1103         }
1104         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1105         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1106                 $res{'commit'} = $1;
1107         }
1108
1109         return wantarray ? %res : \%res;
1110 }
1111
1112 # parse line of git-ls-tree output
1113 sub parse_ls_tree_line ($;%) {
1114         my $line = shift;
1115         my %opts = @_;
1116         my %res;
1117
1118         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1119         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1120
1121         $res{'mode'} = $1;
1122         $res{'type'} = $2;
1123         $res{'hash'} = $3;
1124         if ($opts{'-z'}) {
1125                 $res{'name'} = $4;
1126         } else {
1127                 $res{'name'} = unquote($4);
1128         }
1129
1130         return wantarray ? %res : \%res;
1131 }
1132
1133 ## ......................................................................
1134 ## parse to array of hashes functions
1135
1136 sub git_get_refs_list {
1137         my $ref_dir = shift;
1138         my @reflist;
1139
1140         my @refs;
1141         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1142                 or return;
1143         while (my $line = <$fd>) {
1144                 chomp $line;
1145                 if ($line =~ m/^([0-9a-fA-F]{40})\t$ref_dir\/?([^\^]+)$/) {
1146                         push @refs, { hash => $1, name => $2 };
1147                 } elsif ($line =~ m/^[0-9a-fA-F]{40}\t$ref_dir\/?(.*)\^\{\}$/ &&
1148                          $1 eq $refs[-1]{'name'}) {
1149                         # most likely a tag is followed by its peeled
1150                         # (deref) one, and when that happens we know the
1151                         # previous one was of type 'tag'.
1152                         $refs[-1]{'type'} = "tag";
1153                 }
1154         }
1155         close $fd;
1156
1157         foreach my $ref (@refs) {
1158                 my $ref_file = $ref->{'name'};
1159                 my $ref_id   = $ref->{'hash'};
1160
1161                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1162                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1163
1164                 push @reflist, \%ref_item;
1165         }
1166         # sort refs by age
1167         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1168         return \@reflist;
1169 }
1170
1171 ## ----------------------------------------------------------------------
1172 ## filesystem-related functions
1173
1174 sub get_file_owner {
1175         my $path = shift;
1176
1177         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1178         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1179         if (!defined $gcos) {
1180                 return undef;
1181         }
1182         my $owner = $gcos;
1183         $owner =~ s/[,;].*$//;
1184         return decode("utf8", $owner, Encode::FB_DEFAULT);
1185 }
1186
1187 ## ......................................................................
1188 ## mimetype related functions
1189
1190 sub mimetype_guess_file {
1191         my $filename = shift;
1192         my $mimemap = shift;
1193         -r $mimemap or return undef;
1194
1195         my %mimemap;
1196         open(MIME, $mimemap) or return undef;
1197         while (<MIME>) {
1198                 next if m/^#/; # skip comments
1199                 my ($mime, $exts) = split(/\t+/);
1200                 if (defined $exts) {
1201                         my @exts = split(/\s+/, $exts);
1202                         foreach my $ext (@exts) {
1203                                 $mimemap{$ext} = $mime;
1204                         }
1205                 }
1206         }
1207         close(MIME);
1208
1209         $filename =~ /\.([^.]*)$/;
1210         return $mimemap{$1};
1211 }
1212
1213 sub mimetype_guess {
1214         my $filename = shift;
1215         my $mime;
1216         $filename =~ /\./ or return undef;
1217
1218         if ($mimetypes_file) {
1219                 my $file = $mimetypes_file;
1220                 if ($file !~ m!^/!) { # if it is relative path
1221                         # it is relative to project
1222                         $file = "$projectroot/$project/$file";
1223                 }
1224                 $mime = mimetype_guess_file($filename, $file);
1225         }
1226         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1227         return $mime;
1228 }
1229
1230 sub blob_mimetype {
1231         my $fd = shift;
1232         my $filename = shift;
1233
1234         if ($filename) {
1235                 my $mime = mimetype_guess($filename);
1236                 $mime and return $mime;
1237         }
1238
1239         # just in case
1240         return $default_blob_plain_mimetype unless $fd;
1241
1242         if (-T $fd) {
1243                 return 'text/plain' .
1244                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1245         } elsif (! $filename) {
1246                 return 'application/octet-stream';
1247         } elsif ($filename =~ m/\.png$/i) {
1248                 return 'image/png';
1249         } elsif ($filename =~ m/\.gif$/i) {
1250                 return 'image/gif';
1251         } elsif ($filename =~ m/\.jpe?g$/i) {
1252                 return 'image/jpeg';
1253         } else {
1254                 return 'application/octet-stream';
1255         }
1256 }
1257
1258 ## ======================================================================
1259 ## functions printing HTML: header, footer, error page
1260
1261 sub git_header_html {
1262         my $status = shift || "200 OK";
1263         my $expires = shift;
1264
1265         my $title = "$site_name git";
1266         if (defined $project) {
1267                 $title .= " - $project";
1268                 if (defined $action) {
1269                         $title .= "/$action";
1270                         if (defined $file_name) {
1271                                 $title .= " - $file_name";
1272                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1273                                         $title .= "/";
1274                                 }
1275                         }
1276                 }
1277         }
1278         my $content_type;
1279         # require explicit support from the UA if we are to send the page as
1280         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1281         # we have to do this because MSIE sometimes globs '*/*', pretending to
1282         # support xhtml+xml but choking when it gets what it asked for.
1283         if (defined $cgi->http('HTTP_ACCEPT') &&
1284             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1285             $cgi->Accept('application/xhtml+xml') != 0) {
1286                 $content_type = 'application/xhtml+xml';
1287         } else {
1288                 $content_type = 'text/html';
1289         }
1290         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1291                            -status=> $status, -expires => $expires);
1292         print <<EOF;
1293 <?xml version="1.0" encoding="utf-8"?>
1294 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1295 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1296 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1297 <!-- git core binaries version $git_version -->
1298 <head>
1299 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1300 <meta name="generator" content="gitweb/$version git/$git_version"/>
1301 <meta name="robots" content="index, nofollow"/>
1302 <title>$title</title>
1303 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1304 EOF
1305         if (defined $project) {
1306                 printf('<link rel="alternate" title="%s log" '.
1307                        'href="%s" type="application/rss+xml"/>'."\n",
1308                        esc_param($project), href(action=>"rss"));
1309         } else {
1310                 printf('<link rel="alternate" title="%s projects list" '.
1311                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1312                        $site_name, href(project=>undef, action=>"project_index"));
1313                 printf('<link rel="alternate" title="%s projects logs" '.
1314                        'href="%s" type="text/x-opml"/>'."\n",
1315                        $site_name, href(project=>undef, action=>"opml"));
1316         }
1317         if (defined $favicon) {
1318                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1319         }
1320
1321         print "</head>\n" .
1322               "<body>\n" .
1323               "<div class=\"page_header\">\n" .
1324               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1325               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1326               "</a>\n";
1327         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1328         if (defined $project) {
1329                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1330                 if (defined $action) {
1331                         print " / $action";
1332                 }
1333                 print "\n";
1334                 if (!defined $searchtext) {
1335                         $searchtext = "";
1336                 }
1337                 my $search_hash;
1338                 if (defined $hash_base) {
1339                         $search_hash = $hash_base;
1340                 } elsif (defined $hash) {
1341                         $search_hash = $hash;
1342                 } else {
1343                         $search_hash = "HEAD";
1344                 }
1345                 $cgi->param("a", "search");
1346                 $cgi->param("h", $search_hash);
1347                 print $cgi->startform(-method => "get", -action => $my_uri) .
1348                       "<div class=\"search\">\n" .
1349                       $cgi->hidden(-name => "p") . "\n" .
1350                       $cgi->hidden(-name => "a") . "\n" .
1351                       $cgi->hidden(-name => "h") . "\n" .
1352                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1353                       "</div>" .
1354                       $cgi->end_form() . "\n";
1355         }
1356         print "</div>\n";
1357 }
1358
1359 sub git_footer_html {
1360         print "<div class=\"page_footer\">\n";
1361         if (defined $project) {
1362                 my $descr = git_get_project_description($project);
1363                 if (defined $descr) {
1364                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1365                 }
1366                 print $cgi->a({-href => href(action=>"rss"),
1367                               -class => "rss_logo"}, "RSS") . "\n";
1368         } else {
1369                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1370                               -class => "rss_logo"}, "OPML") . " ";
1371                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1372                               -class => "rss_logo"}, "TXT") . "\n";
1373         }
1374         print "</div>\n" .
1375               "</body>\n" .
1376               "</html>";
1377 }
1378
1379 sub die_error {
1380         my $status = shift || "403 Forbidden";
1381         my $error = shift || "Malformed query, file missing or permission denied";
1382
1383         git_header_html($status);
1384         print <<EOF;
1385 <div class="page_body">
1386 <br /><br />
1387 $status - $error
1388 <br />
1389 </div>
1390 EOF
1391         git_footer_html();
1392         exit;
1393 }
1394
1395 ## ----------------------------------------------------------------------
1396 ## functions printing or outputting HTML: navigation
1397
1398 sub git_print_page_nav {
1399         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1400         $extra = '' if !defined $extra; # pager or formats
1401
1402         my @navs = qw(summary shortlog log commit commitdiff tree);
1403         if ($suppress) {
1404                 @navs = grep { $_ ne $suppress } @navs;
1405         }
1406
1407         my %arg = map { $_ => {action=>$_} } @navs;
1408         if (defined $head) {
1409                 for (qw(commit commitdiff)) {
1410                         $arg{$_}{hash} = $head;
1411                 }
1412                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1413                         for (qw(shortlog log)) {
1414                                 $arg{$_}{hash} = $head;
1415                         }
1416                 }
1417         }
1418         $arg{tree}{hash} = $treehead if defined $treehead;
1419         $arg{tree}{hash_base} = $treebase if defined $treebase;
1420
1421         print "<div class=\"page_nav\">\n" .
1422                 (join " | ",
1423                  map { $_ eq $current ?
1424                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1425                  } @navs);
1426         print "<br/>\n$extra<br/>\n" .
1427               "</div>\n";
1428 }
1429
1430 sub format_paging_nav {
1431         my ($action, $hash, $head, $page, $nrevs) = @_;
1432         my $paging_nav;
1433
1434
1435         if ($hash ne $head || $page) {
1436                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1437         } else {
1438                 $paging_nav .= "HEAD";
1439         }
1440
1441         if ($page > 0) {
1442                 $paging_nav .= " &sdot; " .
1443                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1444                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1445         } else {
1446                 $paging_nav .= " &sdot; prev";
1447         }
1448
1449         if ($nrevs >= (100 * ($page+1)-1)) {
1450                 $paging_nav .= " &sdot; " .
1451                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1452                                  -accesskey => "n", -title => "Alt-n"}, "next");
1453         } else {
1454                 $paging_nav .= " &sdot; next";
1455         }
1456
1457         return $paging_nav;
1458 }
1459
1460 ## ......................................................................
1461 ## functions printing or outputting HTML: div
1462
1463 sub git_print_header_div {
1464         my ($action, $title, $hash, $hash_base) = @_;
1465         my %args = ();
1466
1467         $args{action} = $action;
1468         $args{hash} = $hash if $hash;
1469         $args{hash_base} = $hash_base if $hash_base;
1470
1471         print "<div class=\"header\">\n" .
1472               $cgi->a({-href => href(%args), -class => "title"},
1473               $title ? $title : $action) .
1474               "\n</div>\n";
1475 }
1476
1477 #sub git_print_authorship (\%) {
1478 sub git_print_authorship {
1479         my $co = shift;
1480
1481         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1482         print "<div class=\"author_date\">" .
1483               esc_html($co->{'author_name'}) .
1484               " [$ad{'rfc2822'}";
1485         if ($ad{'hour_local'} < 6) {
1486                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1487                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1488         } else {
1489                 printf(" (%02d:%02d %s)",
1490                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1491         }
1492         print "]</div>\n";
1493 }
1494
1495 sub git_print_page_path {
1496         my $name = shift;
1497         my $type = shift;
1498         my $hb = shift;
1499
1500         if (!defined $name) {
1501                 print "<div class=\"page_path\">/</div>\n";
1502         } else {
1503                 my @dirname = split '/', $name;
1504                 my $basename = pop @dirname;
1505                 my $fullname = '';
1506
1507                 print "<div class=\"page_path\">";
1508                 foreach my $dir (@dirname) {
1509                         $fullname .= $dir . '/';
1510                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1511                                                      hash_base=>$hb),
1512                                       -title => $fullname}, esc_html($dir));
1513                         print "/";
1514                 }
1515                 if (defined $type && $type eq 'blob') {
1516                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1517                                                      hash_base=>$hb),
1518                                       -title => $name}, esc_html($basename));
1519                 } elsif (defined $type && $type eq 'tree') {
1520                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1521                                                      hash_base=>$hb),
1522                                       -title => $name}, esc_html($basename));
1523                         print "/";
1524                 } else {
1525                         print esc_html($basename);
1526                 }
1527                 print "<br/></div>\n";
1528         }
1529 }
1530
1531 # sub git_print_log (\@;%) {
1532 sub git_print_log ($;%) {
1533         my $log = shift;
1534         my %opts = @_;
1535
1536         if ($opts{'-remove_title'}) {
1537                 # remove title, i.e. first line of log
1538                 shift @$log;
1539         }
1540         # remove leading empty lines
1541         while (defined $log->[0] && $log->[0] eq "") {
1542                 shift @$log;
1543         }
1544
1545         # print log
1546         my $signoff = 0;
1547         my $empty = 0;
1548         foreach my $line (@$log) {
1549                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1550                         $signoff = 1;
1551                         $empty = 0;
1552                         if (! $opts{'-remove_signoff'}) {
1553                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1554                                 next;
1555                         } else {
1556                                 # remove signoff lines
1557                                 next;
1558                         }
1559                 } else {
1560                         $signoff = 0;
1561                 }
1562
1563                 # print only one empty line
1564                 # do not print empty line after signoff
1565                 if ($line eq "") {
1566                         next if ($empty || $signoff);
1567                         $empty = 1;
1568                 } else {
1569                         $empty = 0;
1570                 }
1571
1572                 print format_log_line_html($line) . "<br/>\n";
1573         }
1574
1575         if ($opts{'-final_empty_line'}) {
1576                 # end with single empty line
1577                 print "<br/>\n" unless $empty;
1578         }
1579 }
1580
1581 sub git_print_simplified_log {
1582         my $log = shift;
1583         my $remove_title = shift;
1584
1585         git_print_log($log,
1586                 -final_empty_line=> 1,
1587                 -remove_title => $remove_title);
1588 }
1589
1590 # print tree entry (row of git_tree), but without encompassing <tr> element
1591 sub git_print_tree_entry {
1592         my ($t, $basedir, $hash_base, $have_blame) = @_;
1593
1594         my %base_key = ();
1595         $base_key{hash_base} = $hash_base if defined $hash_base;
1596
1597         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1598         if ($t->{'type'} eq "blob") {
1599                 print "<td class=\"list\">" .
1600                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1601                                              file_name=>"$basedir$t->{'name'}", %base_key),
1602                               -class => "list"}, esc_html($t->{'name'})) .
1603                       "</td>\n" .
1604                       "<td class=\"link\">" .
1605                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1606                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1607                               "blob");
1608                 if ($have_blame) {
1609                         print " | " .
1610                                 $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1611                                                        file_name=>"$basedir$t->{'name'}", %base_key)},
1612                                         "blame");
1613                 }
1614                 if (defined $hash_base) {
1615                         print " | " .
1616                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1617                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1618                                       "history");
1619                 }
1620                 print " | " .
1621                       $cgi->a({-href => href(action=>"blob_plain",
1622                                              hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1623                               "raw") .
1624                       "</td>\n";
1625
1626         } elsif ($t->{'type'} eq "tree") {
1627                 print "<td class=\"list\">" .
1628                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1629                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1630                               esc_html($t->{'name'})) .
1631                       "</td>\n" .
1632                       "<td class=\"link\">" .
1633                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1634                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1635                               "tree");
1636                 if (defined $hash_base) {
1637                         print " | " .
1638                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1639                                                      file_name=>"$basedir$t->{'name'}")},
1640                                       "history");
1641                 }
1642                 print "</td>\n";
1643         }
1644 }
1645
1646 ## ......................................................................
1647 ## functions printing large fragments of HTML
1648
1649 sub git_difftree_body {
1650         my ($difftree, $hash, $parent) = @_;
1651
1652         print "<div class=\"list_head\">\n";
1653         if ($#{$difftree} > 10) {
1654                 print(($#{$difftree} + 1) . " files changed:\n");
1655         }
1656         print "</div>\n";
1657
1658         print "<table class=\"diff_tree\">\n";
1659         my $alternate = 0;
1660         my $patchno = 0;
1661         foreach my $line (@{$difftree}) {
1662                 my %diff = parse_difftree_raw_line($line);
1663
1664                 if ($alternate) {
1665                         print "<tr class=\"dark\">\n";
1666                 } else {
1667                         print "<tr class=\"light\">\n";
1668                 }
1669                 $alternate ^= 1;
1670
1671                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1672                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1673                 if ($diff{'to_mode'} ne ('0' x 6)) {
1674                         $to_mode_oct = oct $diff{'to_mode'};
1675                         if (S_ISREG($to_mode_oct)) { # only for regular file
1676                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1677                         }
1678                         $to_file_type = file_type($diff{'to_mode'});
1679                 }
1680                 if ($diff{'from_mode'} ne ('0' x 6)) {
1681                         $from_mode_oct = oct $diff{'from_mode'};
1682                         if (S_ISREG($to_mode_oct)) { # only for regular file
1683                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1684                         }
1685                         $from_file_type = file_type($diff{'from_mode'});
1686                 }
1687
1688                 if ($diff{'status'} eq "A") { # created
1689                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1690                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1691                         $mode_chng   .= "]</span>";
1692                         print "<td>" .
1693                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1694                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1695                                       -class => "list"}, esc_html($diff{'file'})) .
1696                               "</td>\n" .
1697                               "<td>$mode_chng</td>\n" .
1698                               "<td class=\"link\">" .
1699                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1700                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1701                                       "blob");
1702                         if ($action eq 'commitdiff') {
1703                                 # link to patch
1704                                 $patchno++;
1705                                 print " | " .
1706                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1707                         }
1708                         print "</td>\n";
1709
1710                 } elsif ($diff{'status'} eq "D") { # deleted
1711                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1712                         print "<td>" .
1713                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1714                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1715                                        -class => "list"}, esc_html($diff{'file'})) .
1716                               "</td>\n" .
1717                               "<td>$mode_chng</td>\n" .
1718                               "<td class=\"link\">" .
1719                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1720                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1721                                       "blob") .
1722                               " | ";
1723                         if ($action eq 'commitdiff') {
1724                                 # link to patch
1725                                 $patchno++;
1726                                 print " | " .
1727                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1728                         }
1729                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1730                                                      file_name=>$diff{'file'})},
1731                                       "history") .
1732                               "</td>\n";
1733
1734                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1735                         my $mode_chnge = "";
1736                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1737                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1738                                 if ($from_file_type != $to_file_type) {
1739                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1740                                 }
1741                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1742                                         if ($from_mode_str && $to_mode_str) {
1743                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1744                                         } elsif ($to_mode_str) {
1745                                                 $mode_chnge .= " mode: $to_mode_str";
1746                                         }
1747                                 }
1748                                 $mode_chnge .= "]</span>\n";
1749                         }
1750                         print "<td>";
1751                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1752                                 print $cgi->a({-href => href(action=>"blobdiff",
1753                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1754                                                              hash_base=>$hash, hash_parent_base=>$parent,
1755                                                              file_name=>$diff{'file'}),
1756                                               -class => "list"}, esc_html($diff{'file'}));
1757                         } else { # only mode changed
1758                                 print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1759                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1760                                               -class => "list"}, esc_html($diff{'file'}));
1761                         }
1762                         print "</td>\n" .
1763                               "<td>$mode_chnge</td>\n" .
1764                               "<td class=\"link\">" .
1765                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1766                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1767                                       "blob");
1768                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1769                                 if ($action eq 'commitdiff') {
1770                                         # link to patch
1771                                         $patchno++;
1772                                         print " | " .
1773                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1774                                 } else {
1775                                         print " | " .
1776                                                 $cgi->a({-href => href(action=>"blobdiff",
1777                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1778                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1779                                                                        file_name=>$diff{'file'})},
1780                                                         "diff");
1781                                 }
1782                         }
1783                         print " | " .
1784                                 $cgi->a({-href => href(action=>"history",
1785                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1786                                         "history");
1787                         print "</td>\n";
1788
1789                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1790                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1791                         my $nstatus = $status_name{$diff{'status'}};
1792                         my $mode_chng = "";
1793                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1794                                 # mode also for directories, so we cannot use $to_mode_str
1795                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1796                         }
1797                         print "<td>" .
1798                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1799                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1800                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1801                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1802                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1803                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1804                                       -class => "list"}, esc_html($diff{'from_file'})) .
1805                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1806                               "<td class=\"link\">" .
1807                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1808                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'})},
1809                                       "blob");
1810                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1811                                 if ($action eq 'commitdiff') {
1812                                         # link to patch
1813                                         $patchno++;
1814                                         print " | " .
1815                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1816                                 } else {
1817                                         print " | " .
1818                                                 $cgi->a({-href => href(action=>"blobdiff",
1819                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1820                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1821                                                                        file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1822                                                         "diff");
1823                                 }
1824                         }
1825                         print "</td>\n";
1826
1827                 } # we should not encounter Unmerged (U) or Unknown (X) status
1828                 print "</tr>\n";
1829         }
1830         print "</table>\n";
1831 }
1832
1833 sub git_patchset_body {
1834         my ($fd, $difftree, $hash, $hash_parent) = @_;
1835
1836         my $patch_idx = 0;
1837         my $in_header = 0;
1838         my $patch_found = 0;
1839         my $diffinfo;
1840
1841         print "<div class=\"patchset\">\n";
1842
1843         LINE:
1844         while (my $patch_line = <$fd>) {
1845                 chomp $patch_line;
1846
1847                 if ($patch_line =~ m/^diff /) { # "git diff" header
1848                         # beginning of patch (in patchset)
1849                         if ($patch_found) {
1850                                 # close previous patch
1851                                 print "</div>\n"; # class="patch"
1852                         } else {
1853                                 # first patch in patchset
1854                                 $patch_found = 1;
1855                         }
1856                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1857
1858                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1859                                 $diffinfo = $difftree->[$patch_idx];
1860                         } else {
1861                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1862                         }
1863                         $patch_idx++;
1864
1865                         # for now, no extended header, hence we skip empty patches
1866                         # companion to  next LINE if $in_header;
1867                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1868                                 $in_header = 1;
1869                                 next LINE;
1870                         }
1871
1872                         if ($diffinfo->{'status'} eq "A") { # added
1873                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1874                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1875                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1876                                               $diffinfo->{'to_id'}) . "(new)" .
1877                                       "</div>\n"; # class="diff_info"
1878
1879                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1880                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1881                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1882                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1883                                               $diffinfo->{'from_id'}) . "(deleted)" .
1884                                       "</div>\n"; # class="diff_info"
1885
1886                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1887                                  $diffinfo->{'status'} eq "C" || # copied
1888                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1889                                 print "<div class=\"diff_info\">" .
1890                                       file_type($diffinfo->{'from_mode'}) . ":" .
1891                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1892                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1893                                               $diffinfo->{'from_id'}) .
1894                                       " -> " .
1895                                       file_type($diffinfo->{'to_mode'}) . ":" .
1896                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1897                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1898                                               $diffinfo->{'to_id'});
1899                                 print "</div>\n"; # class="diff_info"
1900
1901                         } else { # modified, mode changed, ...
1902                                 print "<div class=\"diff_info\">" .
1903                                       file_type($diffinfo->{'from_mode'}) . ":" .
1904                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1905                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1906                                               $diffinfo->{'from_id'}) .
1907                                       " -> " .
1908                                       file_type($diffinfo->{'to_mode'}) . ":" .
1909                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1910                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1911                                               $diffinfo->{'to_id'});
1912                                 print "</div>\n"; # class="diff_info"
1913                         }
1914
1915                         #print "<div class=\"diff extended_header\">\n";
1916                         $in_header = 1;
1917                         next LINE;
1918                 } # start of patch in patchset
1919
1920
1921                 if ($in_header && $patch_line =~ m/^---/) {
1922                         #print "</div>\n"; # class="diff extended_header"
1923                         $in_header = 0;
1924
1925                         my $file = $diffinfo->{'from_file'};
1926                         $file  ||= $diffinfo->{'file'};
1927                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1928                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1929                                         -class => "list"}, esc_html($file));
1930                         $patch_line =~ s|a/.*$|a/$file|g;
1931                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1932
1933                         $patch_line = <$fd>;
1934                         chomp $patch_line;
1935
1936                         #$patch_line =~ m/^+++/;
1937                         $file    = $diffinfo->{'to_file'};
1938                         $file  ||= $diffinfo->{'file'};
1939                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1940                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1941                                         -class => "list"}, esc_html($file));
1942                         $patch_line =~ s|b/.*|b/$file|g;
1943                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1944
1945                         next LINE;
1946                 }
1947                 next LINE if $in_header;
1948
1949                 print format_diff_line($patch_line);
1950         }
1951         print "</div>\n" if $patch_found; # class="patch"
1952
1953         print "</div>\n"; # class="patchset"
1954 }
1955
1956 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1957
1958 sub git_shortlog_body {
1959         # uses global variable $project
1960         my ($revlist, $from, $to, $refs, $extra) = @_;
1961
1962         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
1963         my $have_snapshot = (defined $ctype && defined $suffix);
1964
1965         $from = 0 unless defined $from;
1966         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1967
1968         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1969         my $alternate = 0;
1970         for (my $i = $from; $i <= $to; $i++) {
1971                 my $commit = $revlist->[$i];
1972                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1973                 my $ref = format_ref_marker($refs, $commit);
1974                 my %co = parse_commit($commit);
1975                 if ($alternate) {
1976                         print "<tr class=\"dark\">\n";
1977                 } else {
1978                         print "<tr class=\"light\">\n";
1979                 }
1980                 $alternate ^= 1;
1981                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1982                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1983                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1984                       "<td>";
1985                 print format_subject_html($co{'title'}, $co{'title_short'},
1986                                           href(action=>"commit", hash=>$commit), $ref);
1987                 print "</td>\n" .
1988                       "<td class=\"link\">" .
1989                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1990                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
1991                 if ($have_snapshot) {
1992                         print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
1993                 }
1994                 print "</td>\n" .
1995                       "</tr>\n";
1996         }
1997         if (defined $extra) {
1998                 print "<tr>\n" .
1999                       "<td colspan=\"4\">$extra</td>\n" .
2000                       "</tr>\n";
2001         }
2002         print "</table>\n";
2003 }
2004
2005 sub git_history_body {
2006         # Warning: assumes constant type (blob or tree) during history
2007         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2008
2009         $from = 0 unless defined $from;
2010         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2011
2012         print "<table class=\"history\" cellspacing=\"0\">\n";
2013         my $alternate = 0;
2014         for (my $i = $from; $i <= $to; $i++) {
2015                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2016                         next;
2017                 }
2018
2019                 my $commit = $1;
2020                 my %co = parse_commit($commit);
2021                 if (!%co) {
2022                         next;
2023                 }
2024
2025                 my $ref = format_ref_marker($refs, $commit);
2026
2027                 if ($alternate) {
2028                         print "<tr class=\"dark\">\n";
2029                 } else {
2030                         print "<tr class=\"light\">\n";
2031                 }
2032                 $alternate ^= 1;
2033                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2034                       # shortlog uses      chop_str($co{'author_name'}, 10)
2035                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2036                       "<td>";
2037                 # originally git_history used chop_str($co{'title'}, 50)
2038                 print format_subject_html($co{'title'}, $co{'title_short'},
2039                                           href(action=>"commit", hash=>$commit), $ref);
2040                 print "</td>\n" .
2041                       "<td class=\"link\">" .
2042                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2043                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2044                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
2045
2046                 if ($ftype eq 'blob') {
2047                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2048                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2049                         if (defined $blob_current && defined $blob_parent &&
2050                                         $blob_current ne $blob_parent) {
2051                                 print " | " .
2052                                         $cgi->a({-href => href(action=>"blobdiff",
2053                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2054                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2055                                                                file_name=>$file_name)},
2056                                                 "diff to current");
2057                         }
2058                 }
2059                 print "</td>\n" .
2060                       "</tr>\n";
2061         }
2062         if (defined $extra) {
2063                 print "<tr>\n" .
2064                       "<td colspan=\"4\">$extra</td>\n" .
2065                       "</tr>\n";
2066         }
2067         print "</table>\n";
2068 }
2069
2070 sub git_tags_body {
2071         # uses global variable $project
2072         my ($taglist, $from, $to, $extra) = @_;
2073         $from = 0 unless defined $from;
2074         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2075
2076         print "<table class=\"tags\" cellspacing=\"0\">\n";
2077         my $alternate = 0;
2078         for (my $i = $from; $i <= $to; $i++) {
2079                 my $entry = $taglist->[$i];
2080                 my %tag = %$entry;
2081                 my $comment_lines = $tag{'comment'};
2082                 my $comment = shift @$comment_lines;
2083                 my $comment_short;
2084                 if (defined $comment) {
2085                         $comment_short = chop_str($comment, 30, 5);
2086                 }
2087                 if ($alternate) {
2088                         print "<tr class=\"dark\">\n";
2089                 } else {
2090                         print "<tr class=\"light\">\n";
2091                 }
2092                 $alternate ^= 1;
2093                 print "<td><i>$tag{'age'}</i></td>\n" .
2094                       "<td>" .
2095                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2096                                -class => "list name"}, esc_html($tag{'name'})) .
2097                       "</td>\n" .
2098                       "<td>";
2099                 if (defined $comment) {
2100                         print format_subject_html($comment, $comment_short,
2101                                                   href(action=>"tag", hash=>$tag{'id'}));
2102                 }
2103                 print "</td>\n" .
2104                       "<td class=\"selflink\">";
2105                 if ($tag{'type'} eq "tag") {
2106                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2107                 } else {
2108                         print "&nbsp;";
2109                 }
2110                 print "</td>\n" .
2111                       "<td class=\"link\">" . " | " .
2112                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2113                 if ($tag{'reftype'} eq "commit") {
2114                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2115                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2116                 } elsif ($tag{'reftype'} eq "blob") {
2117                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2118                 }
2119                 print "</td>\n" .
2120                       "</tr>";
2121         }
2122         if (defined $extra) {
2123                 print "<tr>\n" .
2124                       "<td colspan=\"5\">$extra</td>\n" .
2125                       "</tr>\n";
2126         }
2127         print "</table>\n";
2128 }
2129
2130 sub git_heads_body {
2131         # uses global variable $project
2132         my ($taglist, $head, $from, $to, $extra) = @_;
2133         $from = 0 unless defined $from;
2134         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2135
2136         print "<table class=\"heads\" cellspacing=\"0\">\n";
2137         my $alternate = 0;
2138         for (my $i = $from; $i <= $to; $i++) {
2139                 my $entry = $taglist->[$i];
2140                 my %tag = %$entry;
2141                 my $curr = $tag{'id'} eq $head;
2142                 if ($alternate) {
2143                         print "<tr class=\"dark\">\n";
2144                 } else {
2145                         print "<tr class=\"light\">\n";
2146                 }
2147                 $alternate ^= 1;
2148                 print "<td><i>$tag{'age'}</i></td>\n" .
2149                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2150                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2151                                -class => "list name"},esc_html($tag{'name'})) .
2152                       "</td>\n" .
2153                       "<td class=\"link\">" .
2154                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2155                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") .
2156                       "</td>\n" .
2157                       "</tr>";
2158         }
2159         if (defined $extra) {
2160                 print "<tr>\n" .
2161                       "<td colspan=\"3\">$extra</td>\n" .
2162                       "</tr>\n";
2163         }
2164         print "</table>\n";
2165 }
2166
2167 ## ======================================================================
2168 ## ======================================================================
2169 ## actions
2170
2171 sub git_project_list {
2172         my $order = $cgi->param('o');
2173         if (defined $order && $order !~ m/project|descr|owner|age/) {
2174                 die_error(undef, "Unknown order parameter");
2175         }
2176
2177         my @list = git_get_projects_list();
2178         my @projects;
2179         if (!@list) {
2180                 die_error(undef, "No projects found");
2181         }
2182         foreach my $pr (@list) {
2183                 my $head = git_get_head_hash($pr->{'path'});
2184                 if (!defined $head) {
2185                         next;
2186                 }
2187                 $git_dir = "$projectroot/$pr->{'path'}";
2188                 my %co = parse_commit($head);
2189                 if (!%co) {
2190                         next;
2191                 }
2192                 $pr->{'commit'} = \%co;
2193                 if (!defined $pr->{'descr'}) {
2194                         my $descr = git_get_project_description($pr->{'path'}) || "";
2195                         $pr->{'descr'} = chop_str($descr, 25, 5);
2196                 }
2197                 if (!defined $pr->{'owner'}) {
2198                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2199                 }
2200                 push @projects, $pr;
2201         }
2202
2203         git_header_html();
2204         if (-f $home_text) {
2205                 print "<div class=\"index_include\">\n";
2206                 open (my $fd, $home_text);
2207                 print <$fd>;
2208                 close $fd;
2209                 print "</div>\n";
2210         }
2211         print "<table class=\"project_list\">\n" .
2212               "<tr>\n";
2213         $order ||= "project";
2214         if ($order eq "project") {
2215                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2216                 print "<th>Project</th>\n";
2217         } else {
2218                 print "<th>" .
2219                       $cgi->a({-href => href(project=>undef, order=>'project'),
2220                                -class => "header"}, "Project") .
2221                       "</th>\n";
2222         }
2223         if ($order eq "descr") {
2224                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2225                 print "<th>Description</th>\n";
2226         } else {
2227                 print "<th>" .
2228                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2229                                -class => "header"}, "Description") .
2230                       "</th>\n";
2231         }
2232         if ($order eq "owner") {
2233                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2234                 print "<th>Owner</th>\n";
2235         } else {
2236                 print "<th>" .
2237                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2238                                -class => "header"}, "Owner") .
2239                       "</th>\n";
2240         }
2241         if ($order eq "age") {
2242                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2243                 print "<th>Last Change</th>\n";
2244         } else {
2245                 print "<th>" .
2246                       $cgi->a({-href => href(project=>undef, order=>'age'),
2247                                -class => "header"}, "Last Change") .
2248                       "</th>\n";
2249         }
2250         print "<th></th>\n" .
2251               "</tr>\n";
2252         my $alternate = 0;
2253         foreach my $pr (@projects) {
2254                 if ($alternate) {
2255                         print "<tr class=\"dark\">\n";
2256                 } else {
2257                         print "<tr class=\"light\">\n";
2258                 }
2259                 $alternate ^= 1;
2260                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2261                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2262                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2263                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2264                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2265                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2266                       "<td class=\"link\">" .
2267                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2268                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2269                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") .
2270                       "</td>\n" .
2271                       "</tr>\n";
2272         }
2273         print "</table>\n";
2274         git_footer_html();
2275 }
2276
2277 sub git_project_index {
2278         my @projects = git_get_projects_list();
2279
2280         print $cgi->header(
2281                 -type => 'text/plain',
2282                 -charset => 'utf-8',
2283                 -content_disposition => qq(inline; filename="index.aux"));
2284
2285         foreach my $pr (@projects) {
2286                 if (!exists $pr->{'owner'}) {
2287                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2288                 }
2289
2290                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2291                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2292                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2293                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2294                 $path  =~ s/ /\+/g;
2295                 $owner =~ s/ /\+/g;
2296
2297                 print "$path $owner\n";
2298         }
2299 }
2300
2301 sub git_summary {
2302         my $descr = git_get_project_description($project) || "none";
2303         my $head = git_get_head_hash($project);
2304         my %co = parse_commit($head);
2305         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2306
2307         my $owner = git_get_project_owner($project);
2308
2309         my $refs = git_get_references();
2310         git_header_html();
2311         git_print_page_nav('summary','', $head);
2312
2313         print "<div class=\"title\">&nbsp;</div>\n";
2314         print "<table cellspacing=\"0\">\n" .
2315               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2316               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2317               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2318         # use per project git URL list in $projectroot/$project/cloneurl
2319         # or make project git URL from git base URL and project name
2320         my $url_tag = "URL";
2321         my @url_list = git_get_project_url_list($project);
2322         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2323         foreach my $git_url (@url_list) {
2324                 next unless $git_url;
2325                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2326                 $url_tag = "";
2327         }
2328         print "</table>\n";
2329
2330         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2331                 git_get_head_hash($project)
2332                 or die_error(undef, "Open git-rev-list failed");
2333         my @revlist = map { chomp; $_ } <$fd>;
2334         close $fd;
2335         git_print_header_div('shortlog');
2336         git_shortlog_body(\@revlist, 0, 15, $refs,
2337                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2338
2339         my $taglist = git_get_refs_list("refs/tags");
2340         if (defined @$taglist) {
2341                 git_print_header_div('tags');
2342                 git_tags_body($taglist, 0, 15,
2343                               $cgi->a({-href => href(action=>"tags")}, "..."));
2344         }
2345
2346         my $headlist = git_get_refs_list("refs/heads");
2347         if (defined @$headlist) {
2348                 git_print_header_div('heads');
2349                 git_heads_body($headlist, $head, 0, 15,
2350                                $cgi->a({-href => href(action=>"heads")}, "..."));
2351         }
2352
2353         git_footer_html();
2354 }
2355
2356 sub git_tag {
2357         my $head = git_get_head_hash($project);
2358         git_header_html();
2359         git_print_page_nav('','', $head,undef,$head);
2360         my %tag = parse_tag($hash);
2361         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2362         print "<div class=\"title_text\">\n" .
2363               "<table cellspacing=\"0\">\n" .
2364               "<tr>\n" .
2365               "<td>object</td>\n" .
2366               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2367                                $tag{'object'}) . "</td>\n" .
2368               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2369                                               $tag{'type'}) . "</td>\n" .
2370               "</tr>\n";
2371         if (defined($tag{'author'})) {
2372                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2373                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2374                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2375                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2376                         "</td></tr>\n";
2377         }
2378         print "</table>\n\n" .
2379               "</div>\n";
2380         print "<div class=\"page_body\">";
2381         my $comment = $tag{'comment'};
2382         foreach my $line (@$comment) {
2383                 print esc_html($line) . "<br/>\n";
2384         }
2385         print "</div>\n";
2386         git_footer_html();
2387 }
2388
2389 sub git_blame2 {
2390         my $fd;
2391         my $ftype;
2392
2393         my ($have_blame) = gitweb_check_feature('blame');
2394         if (!$have_blame) {
2395                 die_error('403 Permission denied', "Permission denied");
2396         }
2397         die_error('404 Not Found', "File name not defined") if (!$file_name);
2398         $hash_base ||= git_get_head_hash($project);
2399         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2400         my %co = parse_commit($hash_base)
2401                 or die_error(undef, "Reading commit failed");
2402         if (!defined $hash) {
2403                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2404                         or die_error(undef, "Error looking up file");
2405         }
2406         $ftype = git_get_type($hash);
2407         if ($ftype !~ "blob") {
2408                 die_error("400 Bad Request", "Object is not a blob");
2409         }
2410         open ($fd, "-|", git_cmd(), "blame", '-l', $file_name, $hash_base)
2411                 or die_error(undef, "Open git-blame failed");
2412         git_header_html();
2413         my $formats_nav =
2414                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2415                         "blob") .
2416                 " | " .
2417                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2418                         "head");
2419         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2420         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2421         git_print_page_path($file_name, $ftype, $hash_base);
2422         my @rev_color = (qw(light2 dark2));
2423         my $num_colors = scalar(@rev_color);
2424         my $current_color = 0;
2425         my $last_rev;
2426         print <<HTML;
2427 <div class="page_body">
2428 <table class="blame">
2429 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2430 HTML
2431         while (<$fd>) {
2432                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2433                 my $full_rev = $1;
2434                 my $rev = substr($full_rev, 0, 8);
2435                 my $lineno = $2;
2436                 my $data = $3;
2437
2438                 if (!defined $last_rev) {
2439                         $last_rev = $full_rev;
2440                 } elsif ($last_rev ne $full_rev) {
2441                         $last_rev = $full_rev;
2442                         $current_color = ++$current_color % $num_colors;
2443                 }
2444                 print "<tr class=\"$rev_color[$current_color]\">\n";
2445                 print "<td class=\"sha1\">" .
2446                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2447                                 esc_html($rev)) . "</td>\n";
2448                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2449                       esc_html($lineno) . "</a></td>\n";
2450                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2451                 print "</tr>\n";
2452         }
2453         print "</table>\n";
2454         print "</div>";
2455         close $fd
2456                 or print "Reading blob failed\n";
2457         git_footer_html();
2458 }
2459
2460 sub git_blame {
2461         my $fd;
2462
2463         my ($have_blame) = gitweb_check_feature('blame');
2464         if (!$have_blame) {
2465                 die_error('403 Permission denied', "Permission denied");
2466         }
2467         die_error('404 Not Found', "File name not defined") if (!$file_name);
2468         $hash_base ||= git_get_head_hash($project);
2469         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2470         my %co = parse_commit($hash_base)
2471                 or die_error(undef, "Reading commit failed");
2472         if (!defined $hash) {
2473                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2474                         or die_error(undef, "Error lookup file");
2475         }
2476         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2477                 or die_error(undef, "Open git-annotate failed");
2478         git_header_html();
2479         my $formats_nav =
2480                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2481                         "blob") .
2482                 " | " .
2483                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2484                         "head");
2485         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2486         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2487         git_print_page_path($file_name, 'blob', $hash_base);
2488         print "<div class=\"page_body\">\n";
2489         print <<HTML;
2490 <table class="blame">
2491   <tr>
2492     <th>Commit</th>
2493     <th>Age</th>
2494     <th>Author</th>
2495     <th>Line</th>
2496     <th>Data</th>
2497   </tr>
2498 HTML
2499         my @line_class = (qw(light dark));
2500         my $line_class_len = scalar (@line_class);
2501         my $line_class_num = $#line_class;
2502         while (my $line = <$fd>) {
2503                 my $long_rev;
2504                 my $short_rev;
2505                 my $author;
2506                 my $time;
2507                 my $lineno;
2508                 my $data;
2509                 my $age;
2510                 my $age_str;
2511                 my $age_class;
2512
2513                 chomp $line;
2514                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2515
2516                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2517                         $long_rev = $1;
2518                         $author   = $2;
2519                         $time     = $3;
2520                         $lineno   = $4;
2521                         $data     = $5;
2522                 } else {
2523                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2524                         next;
2525                 }
2526                 $short_rev  = substr ($long_rev, 0, 8);
2527                 $age        = time () - $time;
2528                 $age_str    = age_string ($age);
2529                 $age_str    =~ s/ /&nbsp;/g;
2530                 $age_class  = age_class($age);
2531                 $author     = esc_html ($author);
2532                 $author     =~ s/ /&nbsp;/g;
2533
2534                 $data = untabify($data);
2535                 $data = esc_html ($data);
2536
2537                 print <<HTML;
2538   <tr class="$line_class[$line_class_num]">
2539     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2540     <td class="$age_class">$age_str</td>
2541     <td>$author</td>
2542     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2543     <td class="pre">$data</td>
2544   </tr>
2545 HTML
2546         } # while (my $line = <$fd>)
2547         print "</table>\n\n";
2548         close $fd
2549                 or print "Reading blob failed.\n";
2550         print "</div>";
2551         git_footer_html();
2552 }
2553
2554 sub git_tags {
2555         my $head = git_get_head_hash($project);
2556         git_header_html();
2557         git_print_page_nav('','', $head,undef,$head);
2558         git_print_header_div('summary', $project);
2559
2560         my $taglist = git_get_refs_list("refs/tags");
2561         if (defined @$taglist) {
2562                 git_tags_body($taglist);
2563         }
2564         git_footer_html();
2565 }
2566
2567 sub git_heads {
2568         my $head = git_get_head_hash($project);
2569         git_header_html();
2570         git_print_page_nav('','', $head,undef,$head);
2571         git_print_header_div('summary', $project);
2572
2573         my $taglist = git_get_refs_list("refs/heads");
2574         if (defined @$taglist) {
2575                 git_heads_body($taglist, $head);
2576         }
2577         git_footer_html();
2578 }
2579
2580 sub git_blob_plain {
2581         my $expires;
2582
2583         if (!defined $hash) {
2584                 if (defined $file_name) {
2585                         my $base = $hash_base || git_get_head_hash($project);
2586                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2587                                 or die_error(undef, "Error lookup file");
2588                 } else {
2589                         die_error(undef, "No file name defined");
2590                 }
2591         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2592                 # blobs defined by non-textual hash id's can be cached
2593                 $expires = "+1d";
2594         }
2595
2596         my $type = shift;
2597         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2598                 or die_error(undef, "Couldn't cat $file_name, $hash");
2599
2600         $type ||= blob_mimetype($fd, $file_name);
2601
2602         # save as filename, even when no $file_name is given
2603         my $save_as = "$hash";
2604         if (defined $file_name) {
2605                 $save_as = $file_name;
2606         } elsif ($type =~ m/^text\//) {
2607                 $save_as .= '.txt';
2608         }
2609
2610         print $cgi->header(
2611                 -type => "$type",
2612                 -expires=>$expires,
2613                 -content_disposition => "inline; filename=\"$save_as\"");
2614         undef $/;
2615         binmode STDOUT, ':raw';
2616         print <$fd>;
2617         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2618         $/ = "\n";
2619         close $fd;
2620 }
2621
2622 sub git_blob {
2623         my $expires;
2624
2625         if (!defined $hash) {
2626                 if (defined $file_name) {
2627                         my $base = $hash_base || git_get_head_hash($project);
2628                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2629                                 or die_error(undef, "Error lookup file");
2630                 } else {
2631                         die_error(undef, "No file name defined");
2632                 }
2633         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2634                 # blobs defined by non-textual hash id's can be cached
2635                 $expires = "+1d";
2636         }
2637
2638         my ($have_blame) = gitweb_check_feature('blame');
2639         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2640                 or die_error(undef, "Couldn't cat $file_name, $hash");
2641         my $mimetype = blob_mimetype($fd, $file_name);
2642         if ($mimetype !~ m/^text\//) {
2643                 close $fd;
2644                 return git_blob_plain($mimetype);
2645         }
2646         git_header_html(undef, $expires);
2647         my $formats_nav = '';
2648         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2649                 if (defined $file_name) {
2650                         if ($have_blame) {
2651                                 $formats_nav .=
2652                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2653                                                                hash=>$hash, file_name=>$file_name)},
2654                                                 "blame") .
2655                                         " | ";
2656                         }
2657                         $formats_nav .=
2658                                 $cgi->a({-href => href(action=>"blob_plain",
2659                                                        hash=>$hash, file_name=>$file_name)},
2660                                         "plain") .
2661                                 " | " .
2662                                 $cgi->a({-href => href(action=>"blob",
2663                                                        hash_base=>"HEAD", file_name=>$file_name)},
2664                                         "head");
2665                 } else {
2666                         $formats_nav .=
2667                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "plain");
2668                 }
2669                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2670                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2671         } else {
2672                 print "<div class=\"page_nav\">\n" .
2673                       "<br/><br/></div>\n" .
2674                       "<div class=\"title\">$hash</div>\n";
2675         }
2676         git_print_page_path($file_name, "blob", $hash_base);
2677         print "<div class=\"page_body\">\n";
2678         my $nr;
2679         while (my $line = <$fd>) {
2680                 chomp $line;
2681                 $nr++;
2682                 $line = untabify($line);
2683                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2684                        $nr, $nr, $nr, esc_html($line);
2685         }
2686         close $fd
2687                 or print "Reading blob failed.\n";
2688         print "</div>";
2689         git_footer_html();
2690 }
2691
2692 sub git_tree {
2693         if (!defined $hash) {
2694                 $hash = git_get_head_hash($project);
2695                 if (defined $file_name) {
2696                         my $base = $hash_base || $hash;
2697                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2698                 }
2699                 if (!defined $hash_base) {
2700                         $hash_base = $hash;
2701                 }
2702         }
2703         $/ = "\0";
2704         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2705                 or die_error(undef, "Open git-ls-tree failed");
2706         my @entries = map { chomp; $_ } <$fd>;
2707         close $fd or die_error(undef, "Reading tree failed");
2708         $/ = "\n";
2709
2710         my $refs = git_get_references();
2711         my $ref = format_ref_marker($refs, $hash_base);
2712         git_header_html();
2713         my $base = "";
2714         my ($have_blame) = gitweb_check_feature('blame');
2715         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2716                 git_print_page_nav('tree','', $hash_base);
2717                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2718         } else {
2719                 undef $hash_base;
2720                 print "<div class=\"page_nav\">\n";
2721                 print "<br/><br/></div>\n";
2722                 print "<div class=\"title\">$hash</div>\n";
2723         }
2724         if (defined $file_name) {
2725                 $base = esc_html("$file_name/");
2726         }
2727         git_print_page_path($file_name, 'tree', $hash_base);
2728         print "<div class=\"page_body\">\n";
2729         print "<table cellspacing=\"0\">\n";
2730         my $alternate = 0;
2731         foreach my $line (@entries) {
2732                 my %t = parse_ls_tree_line($line, -z => 1);
2733
2734                 if ($alternate) {
2735                         print "<tr class=\"dark\">\n";
2736                 } else {
2737                         print "<tr class=\"light\">\n";
2738                 }
2739                 $alternate ^= 1;
2740
2741                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2742
2743                 print "</tr>\n";
2744         }
2745         print "</table>\n" .
2746               "</div>";
2747         git_footer_html();
2748 }
2749
2750 sub git_snapshot {
2751
2752         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2753         my $have_snapshot = (defined $ctype && defined $suffix);
2754         if (!$have_snapshot) {
2755                 die_error('403 Permission denied', "Permission denied");
2756         }
2757
2758         if (!defined $hash) {
2759                 $hash = git_get_head_hash($project);
2760         }
2761
2762         my $filename = basename($project) . "-$hash.tar.$suffix";
2763
2764         print $cgi->header(-type => 'application/x-tar',
2765                            -content_encoding => $ctype,
2766                            -content_disposition => "inline; filename=\"$filename\"",
2767                            -status => '200 OK');
2768
2769         my $git_command = git_cmd_str();
2770         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2771                 die_error(undef, "Execute git-tar-tree failed.");
2772         binmode STDOUT, ':raw';
2773         print <$fd>;
2774         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2775         close $fd;
2776
2777 }
2778
2779 sub git_log {
2780         my $head = git_get_head_hash($project);
2781         if (!defined $hash) {
2782                 $hash = $head;
2783         }
2784         if (!defined $page) {
2785                 $page = 0;
2786         }
2787         my $refs = git_get_references();
2788
2789         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2790         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2791                 or die_error(undef, "Open git-rev-list failed");
2792         my @revlist = map { chomp; $_ } <$fd>;
2793         close $fd;
2794
2795         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2796
2797         git_header_html();
2798         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2799
2800         if (!@revlist) {
2801                 my %co = parse_commit($hash);
2802
2803                 git_print_header_div('summary', $project);
2804                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2805         }
2806         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2807                 my $commit = $revlist[$i];
2808                 my $ref = format_ref_marker($refs, $commit);
2809                 my %co = parse_commit($commit);
2810                 next if !%co;
2811                 my %ad = parse_date($co{'author_epoch'});
2812                 git_print_header_div('commit',
2813                                "<span class=\"age\">$co{'age_string'}</span>" .
2814                                esc_html($co{'title'}) . $ref,
2815                                $commit);
2816                 print "<div class=\"title_text\">\n" .
2817                       "<div class=\"log_link\">\n" .
2818                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2819                       " | " .
2820                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2821                       "<br/>\n" .
2822                       "</div>\n" .
2823                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2824                       "</div>\n";
2825
2826                 print "<div class=\"log_body\">\n";
2827                 git_print_simplified_log($co{'comment'});
2828                 print "</div>\n";
2829         }
2830         git_footer_html();
2831 }
2832
2833 sub git_commit {
2834         my %co = parse_commit($hash);
2835         if (!%co) {
2836                 die_error(undef, "Unknown commit object");
2837         }
2838         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2839         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2840
2841         my $parent = $co{'parent'};
2842         if (!defined $parent) {
2843                 $parent = "--root";
2844         }
2845         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2846                 or die_error(undef, "Open git-diff-tree failed");
2847         my @difftree = map { chomp; $_ } <$fd>;
2848         close $fd or die_error(undef, "Reading git-diff-tree failed");
2849
2850         # non-textual hash id's can be cached
2851         my $expires;
2852         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2853                 $expires = "+1d";
2854         }
2855         my $refs = git_get_references();
2856         my $ref = format_ref_marker($refs, $co{'id'});
2857
2858         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2859         my $have_snapshot = (defined $ctype && defined $suffix);
2860
2861         my $formats_nav = '';
2862         if (defined $file_name && defined $co{'parent'}) {
2863                 my $parent = $co{'parent'};
2864                 $formats_nav .=
2865                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2866                                 "blame");
2867         }
2868         git_header_html(undef, $expires);
2869         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2870                            $hash, $co{'tree'}, $hash,
2871                            $formats_nav);
2872
2873         if (defined $co{'parent'}) {
2874                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2875         } else {
2876                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2877         }
2878         print "<div class=\"title_text\">\n" .
2879               "<table cellspacing=\"0\">\n";
2880         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2881               "<tr>" .
2882               "<td></td><td> $ad{'rfc2822'}";
2883         if ($ad{'hour_local'} < 6) {
2884                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2885                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2886         } else {
2887                 printf(" (%02d:%02d %s)",
2888                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2889         }
2890         print "</td>" .
2891               "</tr>\n";
2892         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2893         print "<tr><td></td><td> $cd{'rfc2822'}" .
2894               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2895               "</td></tr>\n";
2896         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2897         print "<tr>" .
2898               "<td>tree</td>" .
2899               "<td class=\"sha1\">" .
2900               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2901                        class => "list"}, $co{'tree'}) .
2902               "</td>" .
2903               "<td class=\"link\">" .
2904               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2905                       "tree");
2906         if ($have_snapshot) {
2907                 print " | " .
2908                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2909         }
2910         print "</td>" .
2911               "</tr>\n";
2912         my $parents = $co{'parents'};
2913         foreach my $par (@$parents) {
2914                 print "<tr>" .
2915                       "<td>parent</td>" .
2916                       "<td class=\"sha1\">" .
2917                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2918                                class => "list"}, $par) .
2919                       "</td>" .
2920                       "<td class=\"link\">" .
2921                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2922                       " | " .
2923                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
2924                       "</td>" .
2925                       "</tr>\n";
2926         }
2927         print "</table>".
2928               "</div>\n";
2929
2930         print "<div class=\"page_body\">\n";
2931         git_print_log($co{'comment'});
2932         print "</div>\n";
2933
2934         git_difftree_body(\@difftree, $hash, $parent);
2935
2936         git_footer_html();
2937 }
2938
2939 sub git_blobdiff {
2940         my $format = shift || 'html';
2941
2942         my $fd;
2943         my @difftree;
2944         my %diffinfo;
2945         my $expires;
2946
2947         # preparing $fd and %diffinfo for git_patchset_body
2948         # new style URI
2949         if (defined $hash_base && defined $hash_parent_base) {
2950                 if (defined $file_name) {
2951                         # read raw output
2952                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
2953                                 "--", $file_name
2954                                 or die_error(undef, "Open git-diff-tree failed");
2955                         @difftree = 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                 } elsif (defined $hash &&
2962                          $hash =~ /[0-9a-fA-F]{40}/) {
2963                         # try to find filename from $hash
2964
2965                         # read filtered raw output
2966                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
2967                                 or die_error(undef, "Open git-diff-tree failed");
2968                         @difftree =
2969                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
2970                                 # $hash == to_id
2971                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
2972                                 map { chomp; $_ } <$fd>;
2973                         close $fd
2974                                 or die_error(undef, "Reading git-diff-tree failed");
2975                         @difftree
2976                                 or die_error('404 Not Found', "Blob diff not found");
2977
2978                 } else {
2979                         die_error('404 Not Found', "Missing one of the blob diff parameters");
2980                 }
2981
2982                 if (@difftree > 1) {
2983                         die_error('404 Not Found', "Ambiguous blob diff specification");
2984                 }
2985
2986                 %diffinfo = parse_difftree_raw_line($difftree[0]);
2987                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
2988                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
2989
2990                 $hash_parent ||= $diffinfo{'from_id'};
2991                 $hash        ||= $diffinfo{'to_id'};
2992
2993                 # non-textual hash id's can be cached
2994                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
2995                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
2996                         $expires = '+1d';
2997                 }
2998
2999                 # open patch output
3000                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3001                         '-p', $hash_parent_base, $hash_base,
3002                         "--", $file_name
3003                         or die_error(undef, "Open git-diff-tree failed");
3004         }
3005
3006         # old/legacy style URI
3007         if (!%diffinfo && # if new style URI failed
3008             defined $hash && defined $hash_parent) {
3009                 # fake git-diff-tree raw output
3010                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3011                 $diffinfo{'from_id'} = $hash_parent;
3012                 $diffinfo{'to_id'}   = $hash;
3013                 if (defined $file_name) {
3014                         if (defined $file_parent) {
3015                                 $diffinfo{'status'} = '2';
3016                                 $diffinfo{'from_file'} = $file_parent;
3017                                 $diffinfo{'to_file'}   = $file_name;
3018                         } else { # assume not renamed
3019                                 $diffinfo{'status'} = '1';
3020                                 $diffinfo{'from_file'} = $file_name;
3021                                 $diffinfo{'to_file'}   = $file_name;
3022                         }
3023                 } else { # no filename given
3024                         $diffinfo{'status'} = '2';
3025                         $diffinfo{'from_file'} = $hash_parent;
3026                         $diffinfo{'to_file'}   = $hash;
3027                 }
3028
3029                 # non-textual hash id's can be cached
3030                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3031                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3032                         $expires = '+1d';
3033                 }
3034
3035                 # open patch output
3036                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3037                         or die_error(undef, "Open git-diff failed");
3038         } else  {
3039                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3040                         unless %diffinfo;
3041         }
3042
3043         # header
3044         if ($format eq 'html') {
3045                 my $formats_nav =
3046                         $cgi->a({-href => href(action=>"blobdiff_plain",
3047                                                hash=>$hash, hash_parent=>$hash_parent,
3048                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3049                                                file_name=>$file_name, file_parent=>$file_parent)},
3050                                 "plain");
3051                 git_header_html(undef, $expires);
3052                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3053                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3054                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3055                 } else {
3056                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3057                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3058                 }
3059                 if (defined $file_name) {
3060                         git_print_page_path($file_name, "blob", $hash_base);
3061                 } else {
3062                         print "<div class=\"page_path\"></div>\n";
3063                 }
3064
3065         } elsif ($format eq 'plain') {
3066                 print $cgi->header(
3067                         -type => 'text/plain',
3068                         -charset => 'utf-8',
3069                         -expires => $expires,
3070                         -content_disposition => qq(inline; filename="${file_name}.patch"));
3071
3072                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3073
3074         } else {
3075                 die_error(undef, "Unknown blobdiff format");
3076         }
3077
3078         # patch
3079         if ($format eq 'html') {
3080                 print "<div class=\"page_body\">\n";
3081
3082                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3083                 close $fd;
3084
3085                 print "</div>\n"; # class="page_body"
3086                 git_footer_html();
3087
3088         } else {
3089                 while (my $line = <$fd>) {
3090                         $line =~ s!a/($hash|$hash_parent)!a/$diffinfo{'from_file'}!g;
3091                         $line =~ s!b/($hash|$hash_parent)!b/$diffinfo{'to_file'}!g;
3092
3093                         print $line;
3094
3095                         last if $line =~ m!^\+\+\+!;
3096                 }
3097                 local $/ = undef;
3098                 print <$fd>;
3099                 close $fd;
3100         }
3101 }
3102
3103 sub git_blobdiff_plain {
3104         git_blobdiff('plain');
3105 }
3106
3107 sub git_commitdiff {
3108         my $format = shift || 'html';
3109         my %co = parse_commit($hash);
3110         if (!%co) {
3111                 die_error(undef, "Unknown commit object");
3112         }
3113         if (!defined $hash_parent) {
3114                 $hash_parent = $co{'parent'} || '--root';
3115         }
3116
3117         # read commitdiff
3118         my $fd;
3119         my @difftree;
3120         if ($format eq 'html') {
3121                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3122                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3123                         or die_error(undef, "Open git-diff-tree failed");
3124
3125                 while (chomp(my $line = <$fd>)) {
3126                         # empty line ends raw part of diff-tree output
3127                         last unless $line;
3128                         push @difftree, $line;
3129                 }
3130
3131         } elsif ($format eq 'plain') {
3132                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3133                         '-p', $hash_parent, $hash
3134                         or die_error(undef, "Open git-diff-tree failed");
3135
3136         } else {
3137                 die_error(undef, "Unknown commitdiff format");
3138         }
3139
3140         # non-textual hash id's can be cached
3141         my $expires;
3142         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3143                 $expires = "+1d";
3144         }
3145
3146         # write commit message
3147         if ($format eq 'html') {
3148                 my $refs = git_get_references();
3149                 my $ref = format_ref_marker($refs, $co{'id'});
3150                 my $formats_nav =
3151                         $cgi->a({-href => href(action=>"commitdiff_plain",
3152                                                hash=>$hash, hash_parent=>$hash_parent)},
3153                                 "plain");
3154
3155                 git_header_html(undef, $expires);
3156                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3157                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3158                 git_print_authorship(\%co);
3159                 print "<div class=\"page_body\">\n";
3160                 print "<div class=\"log\">\n";
3161                 git_print_simplified_log($co{'comment'}, 1); # skip title
3162                 print "</div>\n"; # class="log"
3163
3164         } elsif ($format eq 'plain') {
3165                 my $refs = git_get_references("tags");
3166                 my $tagname = git_get_rev_name_tags($hash);
3167                 my $filename = basename($project) . "-$hash.patch";
3168
3169                 print $cgi->header(
3170                         -type => 'text/plain',
3171                         -charset => 'utf-8',
3172                         -expires => $expires,
3173                         -content_disposition => qq(inline; filename="$filename"));
3174                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3175                 print <<TEXT;
3176 From: $co{'author'}
3177 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3178 Subject: $co{'title'}
3179 TEXT
3180                 print "X-Git-Tag: $tagname\n" if $tagname;
3181                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3182
3183                 foreach my $line (@{$co{'comment'}}) {
3184                         print "$line\n";
3185                 }
3186                 print "---\n\n";
3187         }
3188
3189         # write patch
3190         if ($format eq 'html') {
3191                 git_difftree_body(\@difftree, $hash, $hash_parent);
3192                 print "<br/>\n";
3193
3194                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3195                 close $fd;
3196                 print "</div>\n"; # class="page_body"
3197                 git_footer_html();
3198
3199         } elsif ($format eq 'plain') {
3200                 local $/ = undef;
3201                 print <$fd>;
3202                 close $fd
3203                         or print "Reading git-diff-tree failed\n";
3204         }
3205 }
3206
3207 sub git_commitdiff_plain {
3208         git_commitdiff('plain');
3209 }
3210
3211 sub git_history {
3212         if (!defined $hash_base) {
3213                 $hash_base = git_get_head_hash($project);
3214         }
3215         if (!defined $page) {
3216                 $page = 0;
3217         }
3218         my $ftype;
3219         my %co = parse_commit($hash_base);
3220         if (!%co) {
3221                 die_error(undef, "Unknown commit object");
3222         }
3223
3224         my $refs = git_get_references();
3225         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3226
3227         if (!defined $hash && defined $file_name) {
3228                 $hash = git_get_hash_by_path($hash_base, $file_name);
3229         }
3230         if (defined $hash) {
3231                 $ftype = git_get_type($hash);
3232         }
3233
3234         open my $fd, "-|",
3235                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3236                         or die_error(undef, "Open git-rev-list-failed");
3237         my @revlist = map { chomp; $_ } <$fd>;
3238         close $fd
3239                 or die_error(undef, "Reading git-rev-list failed");
3240
3241         my $paging_nav = '';
3242         if ($page > 0) {
3243                 $paging_nav .=
3244                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3245                                                file_name=>$file_name)},
3246                                 "first");
3247                 $paging_nav .= " &sdot; " .
3248                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3249                                                file_name=>$file_name, page=>$page-1),
3250                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3251         } else {
3252                 $paging_nav .= "first";
3253                 $paging_nav .= " &sdot; prev";
3254         }
3255         if ($#revlist >= (100 * ($page+1)-1)) {
3256                 $paging_nav .= " &sdot; " .
3257                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3258                                                file_name=>$file_name, page=>$page+1),
3259                                  -accesskey => "n", -title => "Alt-n"}, "next");
3260         } else {
3261                 $paging_nav .= " &sdot; next";
3262         }
3263         my $next_link = '';
3264         if ($#revlist >= (100 * ($page+1)-1)) {
3265                 $next_link =
3266                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3267                                                file_name=>$file_name, page=>$page+1),
3268                                  -title => "Alt-n"}, "next");
3269         }
3270
3271         git_header_html();
3272         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3273         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3274         git_print_page_path($file_name, $ftype, $hash_base);
3275
3276         git_history_body(\@revlist, ($page * 100), $#revlist,
3277                          $refs, $hash_base, $ftype, $next_link);
3278
3279         git_footer_html();
3280 }
3281
3282 sub git_search {
3283         if (!defined $searchtext) {
3284                 die_error(undef, "Text field empty");
3285         }
3286         if (!defined $hash) {
3287                 $hash = git_get_head_hash($project);
3288         }
3289         my %co = parse_commit($hash);
3290         if (!%co) {
3291                 die_error(undef, "Unknown commit object");
3292         }
3293
3294         my $commit_search = 1;
3295         my $author_search = 0;
3296         my $committer_search = 0;
3297         my $pickaxe_search = 0;
3298         if ($searchtext =~ s/^author\\://i) {
3299                 $author_search = 1;
3300         } elsif ($searchtext =~ s/^committer\\://i) {
3301                 $committer_search = 1;
3302         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3303                 $commit_search = 0;
3304                 $pickaxe_search = 1;
3305
3306                 # pickaxe may take all resources of your box and run for several minutes
3307                 # with every query - so decide by yourself how public you make this feature
3308                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3309                 if (!$have_pickaxe) {
3310                         die_error('403 Permission denied', "Permission denied");
3311                 }
3312         }
3313         git_header_html();
3314         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3315         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3316
3317         print "<table cellspacing=\"0\">\n";
3318         my $alternate = 0;
3319         if ($commit_search) {
3320                 $/ = "\0";
3321                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3322                 while (my $commit_text = <$fd>) {
3323                         if (!grep m/$searchtext/i, $commit_text) {
3324                                 next;
3325                         }
3326                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3327                                 next;
3328                         }
3329                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3330                                 next;
3331                         }
3332                         my @commit_lines = split "\n", $commit_text;
3333                         my %co = parse_commit(undef, \@commit_lines);
3334                         if (!%co) {
3335                                 next;
3336                         }
3337                         if ($alternate) {
3338                                 print "<tr class=\"dark\">\n";
3339                         } else {
3340                                 print "<tr class=\"light\">\n";
3341                         }
3342                         $alternate ^= 1;
3343                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3344                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3345                               "<td>" .
3346                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3347                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3348                         my $comment = $co{'comment'};
3349                         foreach my $line (@$comment) {
3350                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3351                                         my $lead = esc_html($1) || "";
3352                                         $lead = chop_str($lead, 30, 10);
3353                                         my $match = esc_html($2) || "";
3354                                         my $trail = esc_html($3) || "";
3355                                         $trail = chop_str($trail, 30, 10);
3356                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3357                                         print chop_str($text, 80, 5) . "<br/>\n";
3358                                 }
3359                         }
3360                         print "</td>\n" .
3361                               "<td class=\"link\">" .
3362                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3363                               " | " .
3364                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3365                         print "</td>\n" .
3366                               "</tr>\n";
3367                 }
3368                 close $fd;
3369         }
3370
3371         if ($pickaxe_search) {
3372                 $/ = "\n";
3373                 my $git_command = git_cmd_str();
3374                 open my $fd, "-|", "$git_command rev-list $hash | " .
3375                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3376                 undef %co;
3377                 my @files;
3378                 while (my $line = <$fd>) {
3379                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3380                                 my %set;
3381                                 $set{'file'} = $6;
3382                                 $set{'from_id'} = $3;
3383                                 $set{'to_id'} = $4;
3384                                 $set{'id'} = $set{'to_id'};
3385                                 if ($set{'id'} =~ m/0{40}/) {
3386                                         $set{'id'} = $set{'from_id'};
3387                                 }
3388                                 if ($set{'id'} =~ m/0{40}/) {
3389                                         next;
3390                                 }
3391                                 push @files, \%set;
3392                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3393                                 if (%co) {
3394                                         if ($alternate) {
3395                                                 print "<tr class=\"dark\">\n";
3396                                         } else {
3397                                                 print "<tr class=\"light\">\n";
3398                                         }
3399                                         $alternate ^= 1;
3400                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3401                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3402                                               "<td>" .
3403                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3404                                                       -class => "list subject"},
3405                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3406                                         while (my $setref = shift @files) {
3407                                                 my %set = %$setref;
3408                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3409                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3410                                                               -class => "list"},
3411                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3412                                                       "<br/>\n";
3413                                         }
3414                                         print "</td>\n" .
3415                                               "<td class=\"link\">" .
3416                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3417                                               " | " .
3418                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3419                                         print "</td>\n" .
3420                                               "</tr>\n";
3421                                 }
3422                                 %co = parse_commit($1);
3423                         }
3424                 }
3425                 close $fd;
3426         }
3427         print "</table>\n";
3428         git_footer_html();
3429 }
3430
3431 sub git_shortlog {
3432         my $head = git_get_head_hash($project);
3433         if (!defined $hash) {
3434                 $hash = $head;
3435         }
3436         if (!defined $page) {
3437                 $page = 0;
3438         }
3439         my $refs = git_get_references();
3440
3441         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3442         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3443                 or die_error(undef, "Open git-rev-list failed");
3444         my @revlist = map { chomp; $_ } <$fd>;
3445         close $fd;
3446
3447         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3448         my $next_link = '';
3449         if ($#revlist >= (100 * ($page+1)-1)) {
3450                 $next_link =
3451                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3452                                  -title => "Alt-n"}, "next");
3453         }
3454
3455
3456         git_header_html();
3457         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3458         git_print_header_div('summary', $project);
3459
3460         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3461
3462         git_footer_html();
3463 }
3464
3465 ## ......................................................................
3466 ## feeds (RSS, OPML)
3467
3468 sub git_rss {
3469         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3470         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3471                 or die_error(undef, "Open git-rev-list failed");
3472         my @revlist = map { chomp; $_ } <$fd>;
3473         close $fd or die_error(undef, "Reading git-rev-list failed");
3474         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3475         print <<XML;
3476 <?xml version="1.0" encoding="utf-8"?>
3477 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3478 <channel>
3479 <title>$project $my_uri $my_url</title>
3480 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3481 <description>$project log</description>
3482 <language>en</language>
3483 XML
3484
3485         for (my $i = 0; $i <= $#revlist; $i++) {
3486                 my $commit = $revlist[$i];
3487                 my %co = parse_commit($commit);
3488                 # we read 150, we always show 30 and the ones more recent than 48 hours
3489                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3490                         last;
3491                 }
3492                 my %cd = parse_date($co{'committer_epoch'});
3493                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3494                         $co{'parent'}, $co{'id'}
3495                         or next;
3496                 my @difftree = map { chomp; $_ } <$fd>;
3497                 close $fd
3498                         or next;
3499                 print "<item>\n" .
3500                       "<title>" .
3501                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3502                       "</title>\n" .
3503                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3504                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3505                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3506                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3507                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3508                       "<content:encoded>" .
3509                       "<![CDATA[\n";
3510                 my $comment = $co{'comment'};
3511                 foreach my $line (@$comment) {
3512                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3513                         print "$line<br/>\n";
3514                 }
3515                 print "<br/>\n";
3516                 foreach my $line (@difftree) {
3517                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3518                                 next;
3519                         }
3520                         my $file = validate_input(unquote($7));
3521                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3522                         print "$file<br/>\n";
3523                 }
3524                 print "]]>\n" .
3525                       "</content:encoded>\n" .
3526                       "</item>\n";
3527         }
3528         print "</channel></rss>";
3529 }
3530
3531 sub git_opml {
3532         my @list = git_get_projects_list();
3533
3534         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3535         print <<XML;
3536 <?xml version="1.0" encoding="utf-8"?>
3537 <opml version="1.0">
3538 <head>
3539   <title>$site_name Git OPML Export</title>
3540 </head>
3541 <body>
3542 <outline text="git RSS feeds">
3543 XML
3544
3545         foreach my $pr (@list) {
3546                 my %proj = %$pr;
3547                 my $head = git_get_head_hash($proj{'path'});
3548                 if (!defined $head) {
3549                         next;
3550                 }
3551                 $git_dir = "$projectroot/$proj{'path'}";
3552                 my %co = parse_commit($head);
3553                 if (!%co) {
3554                         next;
3555                 }
3556
3557                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3558                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3559                 my $html = "$my_url?p=$proj{'path'};a=summary";
3560                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3561         }
3562         print <<XML;
3563 </outline>
3564 </body>
3565 </opml>
3566 XML
3567 }