gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  43
  44 # html text to include at home page
  45 our $home_text = "++GITWEB_HOMETEXT++";
  46
  47 # URI of default stylesheet
  48 our $stylesheet = "++GITWEB_CSS++";
  49 # URI of GIT logo
  50 our $logo = "++GITWEB_LOGO++";
  51 # URI of GIT favicon, assumed to be image/png type
  52 our $favicon = "++GITWEB_FAVICON++";
  53
  54 # source of projects list
  55 our $projects_list = "++GITWEB_LIST++";
  56
  57 # list of git base URLs used for URL to where fetch project from,
  58 # i.e. full URL is "$git_base_url/$project"
  59 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  60
  61 # default blob_plain mimetype and default charset for text/plain blob
  62 our $default_blob_plain_mimetype = 'text/plain';
  63 our $default_text_plain_charset  = undef;
  64
  65 # file to use for guessing MIME types before trying /etc/mime.types
  66 # (relative to the current git repository)
  67 our $mimetypes_file = undef;
  68
  69 # You define site-wide feature defaults here; override them with
  70 # $GITWEB_CONFIG as necessary.
  71 our %feature = (
  72         # feature => {
  73         #       'sub' => feature-sub (subroutine),
  74         #       'override' => allow-override (boolean),
  75         #       'default' => [ default options...] (array reference)}
  76         #
  77         # if feature is overridable (it means that allow-override has true value,
  78         # then feature-sub will be called with default options as parameters;
  79         # return value of feature-sub indicates if to enable specified feature
  80         #
  81         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  82
  83         'blame' => {
  84                 'sub' => \&feature_blame,
  85                 'override' => 0,
  86                 'default' => [0]},
  87
  88         'snapshot' => {
  89                 'sub' => \&feature_snapshot,
  90                 'override' => 0,
  91                 #         => [content-encoding, suffix, program]
  92                 'default' => ['x-gzip', 'gz', 'gzip']},
  93
  94         'pickaxe' => {
  95                 'sub' => \&feature_pickaxe,
  96                 'override' => 0,
  97                 'default' => [1]},
  98 );
  99
 100 sub gitweb_check_feature {
 101         my ($name) = @_;
 102         return undef unless exists $feature{$name};
 103         my ($sub, $override, @defaults) = (
 104                 $feature{$name}{'sub'},
 105                 $feature{$name}{'override'},
 106                 @{$feature{$name}{'default'}});
 107         if (!$override) { return @defaults; }
 108         return $sub->(@defaults);
 109 }
 110
 111 # To enable system wide have in $GITWEB_CONFIG
 112 # $feature{'blame'}{'default'} = [1];
 113 # To have project specific config enable override in $GITWEB_CONFIG
 114 # $feature{'blame'}{'override'} = 1;
 115 # and in project config gitweb.blame = 0|1;
 116
 117 sub feature_blame {
 118         my ($val) = git_get_project_config('blame', '--bool');
 119
 120         if ($val eq 'true') {
 121                 return 1;
 122         } elsif ($val eq 'false') {
 123                 return 0;
 124         }
 125
 126         return $_[0];
 127 }
 128
 129 # To disable system wide have in $GITWEB_CONFIG
 130 # $feature{'snapshot'}{'default'} = [undef];
 131 # To have project specific config enable override in $GITWEB_CONFIG
 132 # $feature{'blame'}{'override'} = 1;
 133 # and in project config  gitweb.snapshot = none|gzip|bzip2
 134
 135 sub feature_snapshot {
 136         my ($ctype, $suffix, $command) = @_;
 137
 138         my ($val) = git_get_project_config('snapshot');
 139
 140         if ($val eq 'gzip') {
 141                 return ('x-gzip', 'gz', 'gzip');
 142         } elsif ($val eq 'bzip2') {
 143                 return ('x-bzip2', 'bz2', 'bzip2');
 144         } elsif ($val eq 'none') {
 145                 return ();
 146         }
 147
 148         return ($ctype, $suffix, $command);
 149 }
 150
 151 # To enable system wide have in $GITWEB_CONFIG
 152 # $feature{'pickaxe'}{'default'} = [1];
 153 # To have project specific config enable override in $GITWEB_CONFIG
 154 # $feature{'pickaxe'}{'override'} = 1;
 155 # and in project config gitweb.pickaxe = 0|1;
 156
 157 sub feature_pickaxe {
 158         my ($val) = git_get_project_config('pickaxe', '--bool');
 159
 160         if ($val eq 'true') {
 161                 return (1);
 162         } elsif ($val eq 'false') {
 163                 return (0);
 164         }
 165
 166         return ($_[0]);
 167 }
 168
 169 # rename detection options for git-diff and git-diff-tree
 170 # - default is '-M', with the cost proportional to
 171 #   (number of removed files) * (number of new files).
 172 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 173 #   (number of changed files + number of removed files) * (number of new files)
 174 # - even more costly is '-C', '--find-copies-harder' with cost
 175 #   (number of files in the original tree) * (number of new files)
 176 # - one might want to include '-B' option, e.g. '-B', '-M'
 177 our @diff_opts = ('-M'); # taken from git_commit
 178
 179 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 180 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 181
 182 # version of the core git binary
 183 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 184
 185 # path to the current git repository
 186 our $git_dir;
 187
 188 $projects_list ||= $projectroot;
 189
 190 # ======================================================================
 191 # input validation and dispatch
 192 our $action = $cgi->param('a');
 193 if (defined $action) {
 194         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 195                 die_error(undef, "Invalid action parameter");
 196         }
 197 }
 198
 199 our $project = $cgi->param('p');
 200 if (defined $project) {
 201         if (!validate_input($project)) {
 202                 die_error(undef, "Invalid project parameter");
 203         }
 204         if (!(-d "$projectroot/$project")) {
 205                 die_error(undef, "No such directory");
 206         }
 207         if (!(-e "$projectroot/$project/HEAD")) {
 208                 die_error(undef, "No such project");
 209         }
 210 }
 211
 212 our $file_name = $cgi->param('f');
 213 if (defined $file_name) {
 214         if (!validate_input($file_name)) {
 215                 die_error(undef, "Invalid file parameter");
 216         }
 217 }
 218
 219 our $file_parent = $cgi->param('fp');
 220 if (defined $file_parent) {
 221         if (!validate_input($file_parent)) {
 222                 die_error(undef, "Invalid file parent parameter");
 223         }
 224 }
 225
 226 our $hash = $cgi->param('h');
 227 if (defined $hash) {
 228         if (!validate_input($hash)) {
 229                 die_error(undef, "Invalid hash parameter");
 230         }
 231 }
 232
 233 our $hash_parent = $cgi->param('hp');
 234 if (defined $hash_parent) {
 235         if (!validate_input($hash_parent)) {
 236                 die_error(undef, "Invalid hash parent parameter");
 237         }
 238 }
 239
 240 our $hash_base = $cgi->param('hb');
 241 if (defined $hash_base) {
 242         if (!validate_input($hash_base)) {
 243                 die_error(undef, "Invalid hash base parameter");
 244         }
 245 }
 246
 247 our $hash_parent_base = $cgi->param('hpb');
 248 if (defined $hash_parent_base) {
 249         if (!validate_input($hash_parent_base)) {
 250                 die_error(undef, "Invalid hash parent base parameter");
 251         }
 252 }
 253
 254 our $page = $cgi->param('pg');
 255 if (defined $page) {
 256         if ($page =~ m/[^0-9]$/) {
 257                 die_error(undef, "Invalid page parameter");
 258         }
 259 }
 260
 261 our $searchtext = $cgi->param('s');
 262 if (defined $searchtext) {
 263         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 264                 die_error(undef, "Invalid search parameter");
 265         }
 266         $searchtext = quotemeta $searchtext;
 267 }
 268
 269 # now read PATH_INFO and use it as alternative to parameters
 270 our $path_info = $ENV{"PATH_INFO"};
 271 $path_info =~ s|^/||;
 272 $path_info =~ s|/$||;
 273 if (validate_input($path_info) && !defined $project) {
 274         $project = $path_info;
 275         while ($project && !-e "$projectroot/$project/HEAD") {
 276                 $project =~ s,/*[^/]*$,,;
 277         }
 278         if (defined $project) {
 279                 $project = undef unless $project;
 280         }
 281         if ($path_info =~ m,^$project/([^/]+)/(.+)$,) {
 282                 # we got "project.git/branch/filename"
 283                 $action    ||= "blob_plain";
 284                 $hash_base ||= $1;
 285                 $file_name ||= $2;
 286         } elsif ($path_info =~ m,^$project/([^/]+)$,) {
 287                 # we got "project.git/branch"
 288                 $action ||= "shortlog";
 289                 $hash   ||= $1;
 290         }
 291 }
 292
 293 $git_dir = "$projectroot/$project";
 294
 295 # dispatch
 296 my %actions = (
 297         "blame" => \&git_blame2,
 298         "blobdiff" => \&git_blobdiff,
 299         "blobdiff_plain" => \&git_blobdiff_plain,
 300         "blob" => \&git_blob,
 301         "blob_plain" => \&git_blob_plain,
 302         "commitdiff" => \&git_commitdiff,
 303         "commitdiff_plain" => \&git_commitdiff_plain,
 304         "commit" => \&git_commit,
 305         "heads" => \&git_heads,
 306         "history" => \&git_history,
 307         "log" => \&git_log,
 308         "rss" => \&git_rss,
 309         "search" => \&git_search,
 310         "shortlog" => \&git_shortlog,
 311         "summary" => \&git_summary,
 312         "tag" => \&git_tag,
 313         "tags" => \&git_tags,
 314         "tree" => \&git_tree,
 315         "snapshot" => \&git_snapshot,
 316         # those below don't need $project
 317         "opml" => \&git_opml,
 318         "project_list" => \&git_project_list,
 319         "project_index" => \&git_project_index,
 320 );
 321
 322 if (defined $project) {
 323         $action ||= 'summary';
 324 } else {
 325         $action ||= 'project_list';
 326 }
 327 if (!defined($actions{$action})) {
 328         die_error(undef, "Unknown action");
 329 }
 330 $actions{$action}->();
 331 exit;
 332
 333 ## ======================================================================
 334 ## action links
 335
 336 sub href(%) {
 337         my %params = @_;
 338
 339         my @mapping = (
 340                 project => "p",
 341                 action => "a",
 342                 file_name => "f",
 343                 file_parent => "fp",
 344                 hash => "h",
 345                 hash_parent => "hp",
 346                 hash_base => "hb",
 347                 hash_parent_base => "hpb",
 348                 page => "pg",
 349                 order => "o",
 350                 searchtext => "s",
 351         );
 352         my %mapping = @mapping;
 353
 354         $params{'project'} = $project unless exists $params{'project'};
 355
 356         my @result = ();
 357         for (my $i = 0; $i < @mapping; $i += 2) {
 358                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 359                 if (defined $params{$name}) {
 360                         push @result, $symbol . "=" . esc_param($params{$name});
 361                 }
 362         }
 363         return "$my_uri?" . join(';', @result);
 364 }
 365
 366
 367 ## ======================================================================
 368 ## validation, quoting/unquoting and escaping
 369
 370 sub validate_input {
 371         my $input = shift;
 372
 373         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 374                 return $input;
 375         }
 376         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 377                 return undef;
 378         }
 379         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 380                 return undef;
 381         }
 382         return $input;
 383 }
 384
 385 # quote unsafe chars, but keep the slash, even when it's not
 386 # correct, but quoted slashes look too horrible in bookmarks
 387 sub esc_param {
 388         my $str = shift;
 389         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 390         $str =~ s/\+/%2B/g;
 391         $str =~ s/ /\+/g;
 392         return $str;
 393 }
 394
 395 # replace invalid utf8 character with SUBSTITUTION sequence
 396 sub esc_html {
 397         my $str = shift;
 398         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 399         $str = escapeHTML($str);
 400         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 401         return $str;
 402 }
 403
 404 # git may return quoted and escaped filenames
 405 sub unquote {
 406         my $str = shift;
 407         if ($str =~ m/^"(.*)"$/) {
 408                 $str = $1;
 409                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 410         }
 411         return $str;
 412 }
 413
 414 # escape tabs (convert tabs to spaces)
 415 sub untabify {
 416         my $line = shift;
 417
 418         while ((my $pos = index($line, "\t")) != -1) {
 419                 if (my $count = (8 - ($pos % 8))) {
 420                         my $spaces = ' ' x $count;
 421                         $line =~ s/\t/$spaces/;
 422                 }
 423         }
 424
 425         return $line;
 426 }
 427
 428 ## ----------------------------------------------------------------------
 429 ## HTML aware string manipulation
 430
 431 sub chop_str {
 432         my $str = shift;
 433         my $len = shift;
 434         my $add_len = shift || 10;
 435
 436         # allow only $len chars, but don't cut a word if it would fit in $add_len
 437         # if it doesn't fit, cut it if it's still longer than the dots we would add
 438         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 439         my $body = $1;
 440         my $tail = $2;
 441         if (length($tail) > 4) {
 442                 $tail = " ...";
 443                 $body =~ s/&[^;]*$//; # remove chopped character entities
 444         }
 445         return "$body$tail";
 446 }
 447
 448 ## ----------------------------------------------------------------------
 449 ## functions returning short strings
 450
 451 # CSS class for given age value (in seconds)
 452 sub age_class {
 453         my $age = shift;
 454
 455         if ($age < 60*60*2) {
 456                 return "age0";
 457         } elsif ($age < 60*60*24*2) {
 458                 return "age1";
 459         } else {
 460                 return "age2";
 461         }
 462 }
 463
 464 # convert age in seconds to "nn units ago" string
 465 sub age_string {
 466         my $age = shift;
 467         my $age_str;
 468
 469         if ($age > 60*60*24*365*2) {
 470                 $age_str = (int $age/60/60/24/365);
 471                 $age_str .= " years ago";
 472         } elsif ($age > 60*60*24*(365/12)*2) {
 473                 $age_str = int $age/60/60/24/(365/12);
 474                 $age_str .= " months ago";
 475         } elsif ($age > 60*60*24*7*2) {
 476                 $age_str = int $age/60/60/24/7;
 477                 $age_str .= " weeks ago";
 478         } elsif ($age > 60*60*24*2) {
 479                 $age_str = int $age/60/60/24;
 480                 $age_str .= " days ago";
 481         } elsif ($age > 60*60*2) {
 482                 $age_str = int $age/60/60;
 483                 $age_str .= " hours ago";
 484         } elsif ($age > 60*2) {
 485                 $age_str = int $age/60;
 486                 $age_str .= " min ago";
 487         } elsif ($age > 2) {
 488                 $age_str = int $age;
 489                 $age_str .= " sec ago";
 490         } else {
 491                 $age_str .= " right now";
 492         }
 493         return $age_str;
 494 }
 495
 496 # convert file mode in octal to symbolic file mode string
 497 sub mode_str {
 498         my $mode = oct shift;
 499
 500         if (S_ISDIR($mode & S_IFMT)) {
 501                 return 'drwxr-xr-x';
 502         } elsif (S_ISLNK($mode)) {
 503                 return 'lrwxrwxrwx';
 504         } elsif (S_ISREG($mode)) {
 505                 # git cares only about the executable bit
 506                 if ($mode & S_IXUSR) {
 507                         return '-rwxr-xr-x';
 508                 } else {
 509                         return '-rw-r--r--';
 510                 };
 511         } else {
 512                 return '----------';
 513         }
 514 }
 515
 516 # convert file mode in octal to file type string
 517 sub file_type {
 518         my $mode = shift;
 519
 520         if ($mode !~ m/^[0-7]+$/) {
 521                 return $mode;
 522         } else {
 523                 $mode = oct $mode;
 524         }
 525
 526         if (S_ISDIR($mode & S_IFMT)) {
 527                 return "directory";
 528         } elsif (S_ISLNK($mode)) {
 529                 return "symlink";
 530         } elsif (S_ISREG($mode)) {
 531                 return "file";
 532         } else {
 533                 return "unknown";
 534         }
 535 }
 536
 537 ## ----------------------------------------------------------------------
 538 ## functions returning short HTML fragments, or transforming HTML fragments
 539 ## which don't beling to other sections
 540
 541 # format line of commit message or tag comment
 542 sub format_log_line_html {
 543         my $line = shift;
 544
 545         $line = esc_html($line);
 546         $line =~ s/ /&nbsp;/g;
 547         if ($line =~ m/([0-9a-fA-F]{40})/) {
 548                 my $hash_text = $1;
 549                 if (git_get_type($hash_text) eq "commit") {
 550                         my $link =
 551                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 552                                         -class => "text"}, $hash_text);
 553                         $line =~ s/$hash_text/$link/;
 554                 }
 555         }
 556         return $line;
 557 }
 558
 559 # format marker of refs pointing to given object
 560 sub format_ref_marker {
 561         my ($refs, $id) = @_;
 562         my $markers = '';
 563
 564         if (defined $refs->{$id}) {
 565                 foreach my $ref (@{$refs->{$id}}) {
 566                         my ($type, $name) = qw();
 567                         # e.g. tags/v2.6.11 or heads/next
 568                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 569                                 $type = $1;
 570                                 $name = $2;
 571                         } else {
 572                                 $type = "ref";
 573                                 $name = $ref;
 574                         }
 575
 576                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 577                 }
 578         }
 579
 580         if ($markers) {
 581                 return ' <span class="refs">'. $markers . '</span>';
 582         } else {
 583                 return "";
 584         }
 585 }
 586
 587 # format, perhaps shortened and with markers, title line
 588 sub format_subject_html {
 589         my ($long, $short, $href, $extra) = @_;
 590         $extra = '' unless defined($extra);
 591
 592         if (length($short) < length($long)) {
 593                 return $cgi->a({-href => $href, -class => "list subject",
 594                                 -title => $long},
 595                        esc_html($short) . $extra);
 596         } else {
 597                 return $cgi->a({-href => $href, -class => "list subject"},
 598                        esc_html($long)  . $extra);
 599         }
 600 }
 601
 602 sub format_diff_line {
 603         my $line = shift;
 604         my $char = substr($line, 0, 1);
 605         my $diff_class = "";
 606
 607         chomp $line;
 608
 609         if ($char eq '+') {
 610                 $diff_class = " add";
 611         } elsif ($char eq "-") {
 612                 $diff_class = " rem";
 613         } elsif ($char eq "@") {
 614                 $diff_class = " chunk_header";
 615         } elsif ($char eq "\\") {
 616                 $diff_class = " incomplete";
 617         }
 618         $line = untabify($line);
 619         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 620 }
 621
 622 ## ----------------------------------------------------------------------
 623 ## git utility subroutines, invoking git commands
 624
 625 # returns path to the core git executable and the --git-dir parameter as list
 626 sub git_cmd {
 627         return $GIT, '--git-dir='.$git_dir;
 628 }
 629
 630 # returns path to the core git executable and the --git-dir parameter as string
 631 sub git_cmd_str {
 632         return join(' ', git_cmd());
 633 }
 634
 635 # get HEAD ref of given project as hash
 636 sub git_get_head_hash {
 637         my $project = shift;
 638         my $o_git_dir = $git_dir;
 639         my $retval = undef;
 640         $git_dir = "$projectroot/$project";
 641         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 642                 my $head = <$fd>;
 643                 close $fd;
 644                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 645                         $retval = $1;
 646                 }
 647         }
 648         if (defined $o_git_dir) {
 649                 $git_dir = $o_git_dir;
 650         }
 651         return $retval;
 652 }
 653
 654 # get type of given object
 655 sub git_get_type {
 656         my $hash = shift;
 657
 658         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 659         my $type = <$fd>;
 660         close $fd or return;
 661         chomp $type;
 662         return $type;
 663 }
 664
 665 sub git_get_project_config {
 666         my ($key, $type) = @_;
 667
 668         return unless ($key);
 669         $key =~ s/^gitweb\.//;
 670         return if ($key =~ m/\W/);
 671
 672         my @x = (git_cmd(), 'repo-config');
 673         if (defined $type) { push @x, $type; }
 674         push @x, "--get";
 675         push @x, "gitweb.$key";
 676         my $val = qx(@x);
 677         chomp $val;
 678         return ($val);
 679 }
 680
 681 # get hash of given path at given ref
 682 sub git_get_hash_by_path {
 683         my $base = shift;
 684         my $path = shift || return undef;
 685
 686         my $tree = $base;
 687
 688         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 689                 or die_error(undef, "Open git-ls-tree failed");
 690         my $line = <$fd>;
 691         close $fd or return undef;
 692
 693         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 694         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 695         return $3;
 696 }
 697
 698 ## ......................................................................
 699 ## git utility functions, directly accessing git repository
 700
 701 sub git_get_project_description {
 702         my $path = shift;
 703
 704         open my $fd, "$projectroot/$path/description" or return undef;
 705         my $descr = <$fd>;
 706         close $fd;
 707         chomp $descr;
 708         return $descr;
 709 }
 710
 711 sub git_get_project_url_list {
 712         my $path = shift;
 713
 714         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 715         my @git_project_url_list = map { chomp; $_ } <$fd>;
 716         close $fd;
 717
 718         return wantarray ? @git_project_url_list : \@git_project_url_list;
 719 }
 720
 721 sub git_get_projects_list {
 722         my @list;
 723
 724         if (-d $projects_list) {
 725                 # search in directory
 726                 my $dir = $projects_list;
 727                 my $pfxlen = length("$dir");
 728
 729                 File::Find::find({
 730                         follow_fast => 1, # follow symbolic links
 731                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 732                         wanted => sub {
 733                                 # skip project-list toplevel, if we get it.
 734                                 return if (m!^[/.]$!);
 735                                 # only directories can be git repositories
 736                                 return unless (-d $_);
 737
 738                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 739                                 # we check related file in $projectroot
 740                                 if (-e "$projectroot/$subdir/HEAD") {
 741                                         push @list, { path => $subdir };
 742                                         $File::Find::prune = 1;
 743                                 }
 744                         },
 745                 }, "$dir");
 746
 747         } elsif (-f $projects_list) {
 748                 # read from file(url-encoded):
 749                 # 'git%2Fgit.git Linus+Torvalds'
 750                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 751                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 752                 open my ($fd), $projects_list or return undef;
 753                 while (my $line = <$fd>) {
 754                         chomp $line;
 755                         my ($path, $owner) = split ' ', $line;
 756                         $path = unescape($path);
 757                         $owner = unescape($owner);
 758                         if (!defined $path) {
 759                                 next;
 760                         }
 761                         if (-e "$projectroot/$path/HEAD") {
 762                                 my $pr = {
 763                                         path => $path,
 764                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 765                                 };
 766                                 push @list, $pr
 767                         }
 768                 }
 769                 close $fd;
 770         }
 771         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 772         return @list;
 773 }
 774
 775 sub git_get_project_owner {
 776         my $project = shift;
 777         my $owner;
 778
 779         return undef unless $project;
 780
 781         # read from file (url-encoded):
 782         # 'git%2Fgit.git Linus+Torvalds'
 783         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 784         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 785         if (-f $projects_list) {
 786                 open (my $fd , $projects_list);
 787                 while (my $line = <$fd>) {
 788                         chomp $line;
 789                         my ($pr, $ow) = split ' ', $line;
 790                         $pr = unescape($pr);
 791                         $ow = unescape($ow);
 792                         if ($pr eq $project) {
 793                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 794                                 last;
 795                         }
 796                 }
 797                 close $fd;
 798         }
 799         if (!defined $owner) {
 800                 $owner = get_file_owner("$projectroot/$project");
 801         }
 802
 803         return $owner;
 804 }
 805
 806 sub git_get_references {
 807         my $type = shift || "";
 808         my %refs;
 809         my $fd;
 810         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 811         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 812         if (-f "$projectroot/$project/info/refs") {
 813                 open $fd, "$projectroot/$project/info/refs"
 814                         or return;
 815         } else {
 816                 open $fd, "-|", git_cmd(), "ls-remote", "."
 817                         or return;
 818         }
 819
 820         while (my $line = <$fd>) {
 821                 chomp $line;
 822                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 823                         if (defined $refs{$1}) {
 824                                 push @{$refs{$1}}, $2;
 825                         } else {
 826                                 $refs{$1} = [ $2 ];
 827                         }
 828                 }
 829         }
 830         close $fd or return;
 831         return \%refs;
 832 }
 833
 834 sub git_get_rev_name_tags {
 835         my $hash = shift || return undef;
 836
 837         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 838                 or return;
 839         my $name_rev = <$fd>;
 840         close $fd;
 841
 842         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 843                 return $1;
 844         } else {
 845                 # catches also '$hash undefined' output
 846                 return undef;
 847         }
 848 }
 849
 850 ## ----------------------------------------------------------------------
 851 ## parse to hash functions
 852
 853 sub parse_date {
 854         my $epoch = shift;
 855         my $tz = shift || "-0000";
 856
 857         my %date;
 858         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 859         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 860         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 861         $date{'hour'} = $hour;
 862         $date{'minute'} = $min;
 863         $date{'mday'} = $mday;
 864         $date{'day'} = $days[$wday];
 865         $date{'month'} = $months[$mon];
 866         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 867                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 868         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 869                              $mday, $months[$mon], $hour ,$min;
 870
 871         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 872         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 873         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 874         $date{'hour_local'} = $hour;
 875         $date{'minute_local'} = $min;
 876         $date{'tz_local'} = $tz;
 877         return %date;
 878 }
 879
 880 sub parse_tag {
 881         my $tag_id = shift;
 882         my %tag;
 883         my @comment;
 884
 885         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 886         $tag{'id'} = $tag_id;
 887         while (my $line = <$fd>) {
 888                 chomp $line;
 889                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 890                         $tag{'object'} = $1;
 891                 } elsif ($line =~ m/^type (.+)$/) {
 892                         $tag{'type'} = $1;
 893                 } elsif ($line =~ m/^tag (.+)$/) {
 894                         $tag{'name'} = $1;
 895                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 896                         $tag{'author'} = $1;
 897                         $tag{'epoch'} = $2;
 898                         $tag{'tz'} = $3;
 899                 } elsif ($line =~ m/--BEGIN/) {
 900                         push @comment, $line;
 901                         last;
 902                 } elsif ($line eq "") {
 903                         last;
 904                 }
 905         }
 906         push @comment, <$fd>;
 907         $tag{'comment'} = \@comment;
 908         close $fd or return;
 909         if (!defined $tag{'name'}) {
 910                 return
 911         };
 912         return %tag
 913 }
 914
 915 sub parse_commit {
 916         my $commit_id = shift;
 917         my $commit_text = shift;
 918
 919         my @commit_lines;
 920         my %co;
 921
 922         if (defined $commit_text) {
 923                 @commit_lines = @$commit_text;
 924         } else {
 925                 $/ = "\0";
 926                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
 927                         or return;
 928                 @commit_lines = split '\n', <$fd>;
 929                 close $fd or return;
 930                 $/ = "\n";
 931                 pop @commit_lines;
 932         }
 933         my $header = shift @commit_lines;
 934         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 935                 return;
 936         }
 937         ($co{'id'}, my @parents) = split ' ', $header;
 938         $co{'parents'} = \@parents;
 939         $co{'parent'} = $parents[0];
 940         while (my $line = shift @commit_lines) {
 941                 last if $line eq "\n";
 942                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 943                         $co{'tree'} = $1;
 944                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 945                         $co{'author'} = $1;
 946                         $co{'author_epoch'} = $2;
 947                         $co{'author_tz'} = $3;
 948                         if ($co{'author'} =~ m/^([^<]+) </) {
 949                                 $co{'author_name'} = $1;
 950                         } else {
 951                                 $co{'author_name'} = $co{'author'};
 952                         }
 953                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 954                         $co{'committer'} = $1;
 955                         $co{'committer_epoch'} = $2;
 956                         $co{'committer_tz'} = $3;
 957                         $co{'committer_name'} = $co{'committer'};
 958                         $co{'committer_name'} =~ s/ <.*//;
 959                 }
 960         }
 961         if (!defined $co{'tree'}) {
 962                 return;
 963         };
 964
 965         foreach my $title (@commit_lines) {
 966                 $title =~ s/^    //;
 967                 if ($title ne "") {
 968                         $co{'title'} = chop_str($title, 80, 5);
 969                         # remove leading stuff of merges to make the interesting part visible
 970                         if (length($title) > 50) {
 971                                 $title =~ s/^Automatic //;
 972                                 $title =~ s/^merge (of|with) /Merge ... /i;
 973                                 if (length($title) > 50) {
 974                                         $title =~ s/(http|rsync):\/\///;
 975                                 }
 976                                 if (length($title) > 50) {
 977                                         $title =~ s/(master|www|rsync)\.//;
 978                                 }
 979                                 if (length($title) > 50) {
 980                                         $title =~ s/kernel.org:?//;
 981                                 }
 982                                 if (length($title) > 50) {
 983                                         $title =~ s/\/pub\/scm//;
 984                                 }
 985                         }
 986                         $co{'title_short'} = chop_str($title, 50, 5);
 987                         last;
 988                 }
 989         }
 990         # remove added spaces
 991         foreach my $line (@commit_lines) {
 992                 $line =~ s/^    //;
 993         }
 994         $co{'comment'} = \@commit_lines;
 995
 996         my $age = time - $co{'committer_epoch'};
 997         $co{'age'} = $age;
 998         $co{'age_string'} = age_string($age);
 999         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1000         if ($age > 60*60*24*7*2) {
1001                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1002                 $co{'age_string_age'} = $co{'age_string'};
1003         } else {
1004                 $co{'age_string_date'} = $co{'age_string'};
1005                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1006         }
1007         return %co;
1008 }
1009
1010 # parse ref from ref_file, given by ref_id, with given type
1011 sub parse_ref {
1012         my $ref_file = shift;
1013         my $ref_id = shift;
1014         my $type = shift || git_get_type($ref_id);
1015         my %ref_item;
1016
1017         $ref_item{'type'} = $type;
1018         $ref_item{'id'} = $ref_id;
1019         $ref_item{'epoch'} = 0;
1020         $ref_item{'age'} = "unknown";
1021         if ($type eq "tag") {
1022                 my %tag = parse_tag($ref_id);
1023                 $ref_item{'comment'} = $tag{'comment'};
1024                 if ($tag{'type'} eq "commit") {
1025                         my %co = parse_commit($tag{'object'});
1026                         $ref_item{'epoch'} = $co{'committer_epoch'};
1027                         $ref_item{'age'} = $co{'age_string'};
1028                 } elsif (defined($tag{'epoch'})) {
1029                         my $age = time - $tag{'epoch'};
1030                         $ref_item{'epoch'} = $tag{'epoch'};
1031                         $ref_item{'age'} = age_string($age);
1032                 }
1033                 $ref_item{'reftype'} = $tag{'type'};
1034                 $ref_item{'name'} = $tag{'name'};
1035                 $ref_item{'refid'} = $tag{'object'};
1036         } elsif ($type eq "commit"){
1037                 my %co = parse_commit($ref_id);
1038                 $ref_item{'reftype'} = "commit";
1039                 $ref_item{'name'} = $ref_file;
1040                 $ref_item{'title'} = $co{'title'};
1041                 $ref_item{'refid'} = $ref_id;
1042                 $ref_item{'epoch'} = $co{'committer_epoch'};
1043                 $ref_item{'age'} = $co{'age_string'};
1044         } else {
1045                 $ref_item{'reftype'} = $type;
1046                 $ref_item{'name'} = $ref_file;
1047                 $ref_item{'refid'} = $ref_id;
1048         }
1049
1050         return %ref_item;
1051 }
1052
1053 # parse line of git-diff-tree "raw" output
1054 sub parse_difftree_raw_line {
1055         my $line = shift;
1056         my %res;
1057
1058         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1059         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1060         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1061                 $res{'from_mode'} = $1;
1062                 $res{'to_mode'} = $2;
1063                 $res{'from_id'} = $3;
1064                 $res{'to_id'} = $4;
1065                 $res{'status'} = $5;
1066                 $res{'similarity'} = $6;
1067                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1068                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1069                 } else {
1070                         $res{'file'} = unquote($7);
1071                 }
1072         }
1073         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1074         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1075                 $res{'commit'} = $1;
1076         }
1077
1078         return wantarray ? %res : \%res;
1079 }
1080
1081 # parse line of git-ls-tree output
1082 sub parse_ls_tree_line ($;%) {
1083         my $line = shift;
1084         my %opts = @_;
1085         my %res;
1086
1087         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1088         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1089
1090         $res{'mode'} = $1;
1091         $res{'type'} = $2;
1092         $res{'hash'} = $3;
1093         if ($opts{'-z'}) {
1094                 $res{'name'} = $4;
1095         } else {
1096                 $res{'name'} = unquote($4);
1097         }
1098
1099         return wantarray ? %res : \%res;
1100 }
1101
1102 ## ......................................................................
1103 ## parse to array of hashes functions
1104
1105 sub git_get_refs_list {
1106         my $ref_dir = shift;
1107         my @reflist;
1108
1109         my @refs;
1110         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1111                 or return;
1112         while (my $line = <$fd>) {
1113                 chomp $line;
1114                 if ($line =~ m/^([0-9a-fA-F]{40})\t$ref_dir\/?([^\^]+)$/) {
1115                         push @refs, { hash => $1, name => $2 };
1116                 } elsif ($line =~ m/^[0-9a-fA-F]{40}\t$ref_dir\/?(.*)\^\{\}$/ &&
1117                          $1 eq $refs[-1]{'name'}) {
1118                         # most likely a tag is followed by its peeled
1119                         # (deref) one, and when that happens we know the
1120                         # previous one was of type 'tag'.
1121                         $refs[-1]{'type'} = "tag";
1122                 }
1123         }
1124         close $fd;
1125
1126         foreach my $ref (@refs) {
1127                 my $ref_file = $ref->{'name'};
1128                 my $ref_id   = $ref->{'hash'};
1129
1130                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1131                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1132
1133                 push @reflist, \%ref_item;
1134         }
1135         # sort refs by age
1136         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1137         return \@reflist;
1138 }
1139
1140 ## ----------------------------------------------------------------------
1141 ## filesystem-related functions
1142
1143 sub get_file_owner {
1144         my $path = shift;
1145
1146         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1147         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1148         if (!defined $gcos) {
1149                 return undef;
1150         }
1151         my $owner = $gcos;
1152         $owner =~ s/[,;].*$//;
1153         return decode("utf8", $owner, Encode::FB_DEFAULT);
1154 }
1155
1156 ## ......................................................................
1157 ## mimetype related functions
1158
1159 sub mimetype_guess_file {
1160         my $filename = shift;
1161         my $mimemap = shift;
1162         -r $mimemap or return undef;
1163
1164         my %mimemap;
1165         open(MIME, $mimemap) or return undef;
1166         while (<MIME>) {
1167                 next if m/^#/; # skip comments
1168                 my ($mime, $exts) = split(/\t+/);
1169                 if (defined $exts) {
1170                         my @exts = split(/\s+/, $exts);
1171                         foreach my $ext (@exts) {
1172                                 $mimemap{$ext} = $mime;
1173                         }
1174                 }
1175         }
1176         close(MIME);
1177
1178         $filename =~ /\.(.*?)$/;
1179         return $mimemap{$1};
1180 }
1181
1182 sub mimetype_guess {
1183         my $filename = shift;
1184         my $mime;
1185         $filename =~ /\./ or return undef;
1186
1187         if ($mimetypes_file) {
1188                 my $file = $mimetypes_file;
1189                 if ($file !~ m!^/!) { # if it is relative path
1190                         # it is relative to project
1191                         $file = "$projectroot/$project/$file";
1192                 }
1193                 $mime = mimetype_guess_file($filename, $file);
1194         }
1195         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1196         return $mime;
1197 }
1198
1199 sub blob_mimetype {
1200         my $fd = shift;
1201         my $filename = shift;
1202
1203         if ($filename) {
1204                 my $mime = mimetype_guess($filename);
1205                 $mime and return $mime;
1206         }
1207
1208         # just in case
1209         return $default_blob_plain_mimetype unless $fd;
1210
1211         if (-T $fd) {
1212                 return 'text/plain' .
1213                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1214         } elsif (! $filename) {
1215                 return 'application/octet-stream';
1216         } elsif ($filename =~ m/\.png$/i) {
1217                 return 'image/png';
1218         } elsif ($filename =~ m/\.gif$/i) {
1219                 return 'image/gif';
1220         } elsif ($filename =~ m/\.jpe?g$/i) {
1221                 return 'image/jpeg';
1222         } else {
1223                 return 'application/octet-stream';
1224         }
1225 }
1226
1227 ## ======================================================================
1228 ## functions printing HTML: header, footer, error page
1229
1230 sub git_header_html {
1231         my $status = shift || "200 OK";
1232         my $expires = shift;
1233
1234         my $title = "$site_name git";
1235         if (defined $project) {
1236                 $title .= " - $project";
1237                 if (defined $action) {
1238                         $title .= "/$action";
1239                         if (defined $file_name) {
1240                                 $title .= " - $file_name";
1241                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1242                                         $title .= "/";
1243                                 }
1244                         }
1245                 }
1246         }
1247         my $content_type;
1248         # require explicit support from the UA if we are to send the page as
1249         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1250         # we have to do this because MSIE sometimes globs '*/*', pretending to
1251         # support xhtml+xml but choking when it gets what it asked for.
1252         if (defined $cgi->http('HTTP_ACCEPT') &&
1253             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1254             $cgi->Accept('application/xhtml+xml') != 0) {
1255                 $content_type = 'application/xhtml+xml';
1256         } else {
1257                 $content_type = 'text/html';
1258         }
1259         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1260                            -status=> $status, -expires => $expires);
1261         print <<EOF;
1262 <?xml version="1.0" encoding="utf-8"?>
1263 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1264 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1265 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1266 <!-- git core binaries version $git_version -->
1267 <head>
1268 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1269 <meta name="generator" content="gitweb/$version git/$git_version"/>
1270 <meta name="robots" content="index, nofollow"/>
1271 <title>$title</title>
1272 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1273 EOF
1274         if (defined $project) {
1275                 printf('<link rel="alternate" title="%s log" '.
1276                        'href="%s" type="application/rss+xml"/>'."\n",
1277                        esc_param($project), href(action=>"rss"));
1278         } else {
1279                 printf('<link rel="alternate" title="%s projects list" '.
1280                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1281                        $site_name, href(project=>undef, action=>"project_index"));
1282                 printf('<link rel="alternate" title="%s projects logs" '.
1283                        'href="%s" type="text/x-opml"/>'."\n",
1284                        $site_name, href(project=>undef, action=>"opml"));
1285         }
1286         if (defined $favicon) {
1287                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1288         }
1289
1290         print "</head>\n" .
1291               "<body>\n" .
1292               "<div class=\"page_header\">\n" .
1293               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1294               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1295               "</a>\n";
1296         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1297         if (defined $project) {
1298                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1299                 if (defined $action) {
1300                         print " / $action";
1301                 }
1302                 print "\n";
1303                 if (!defined $searchtext) {
1304                         $searchtext = "";
1305                 }
1306                 my $search_hash;
1307                 if (defined $hash_base) {
1308                         $search_hash = $hash_base;
1309                 } elsif (defined $hash) {
1310                         $search_hash = $hash;
1311                 } else {
1312                         $search_hash = "HEAD";
1313                 }
1314                 $cgi->param("a", "search");
1315                 $cgi->param("h", $search_hash);
1316                 print $cgi->startform(-method => "get", -action => $my_uri) .
1317                       "<div class=\"search\">\n" .
1318                       $cgi->hidden(-name => "p") . "\n" .
1319                       $cgi->hidden(-name => "a") . "\n" .
1320                       $cgi->hidden(-name => "h") . "\n" .
1321                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1322                       "</div>" .
1323                       $cgi->end_form() . "\n";
1324         }
1325         print "</div>\n";
1326 }
1327
1328 sub git_footer_html {
1329         print "<div class=\"page_footer\">\n";
1330         if (defined $project) {
1331                 my $descr = git_get_project_description($project);
1332                 if (defined $descr) {
1333                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1334                 }
1335                 print $cgi->a({-href => href(action=>"rss"),
1336                               -class => "rss_logo"}, "RSS") . "\n";
1337         } else {
1338                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1339                               -class => "rss_logo"}, "OPML") . " ";
1340                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1341                               -class => "rss_logo"}, "TXT") . "\n";
1342         }
1343         print "</div>\n" .
1344               "</body>\n" .
1345               "</html>";
1346 }
1347
1348 sub die_error {
1349         my $status = shift || "403 Forbidden";
1350         my $error = shift || "Malformed query, file missing or permission denied";
1351
1352         git_header_html($status);
1353         print <<EOF;
1354 <div class="page_body">
1355 <br /><br />
1356 $status - $error
1357 <br />
1358 </div>
1359 EOF
1360         git_footer_html();
1361         exit;
1362 }
1363
1364 ## ----------------------------------------------------------------------
1365 ## functions printing or outputting HTML: navigation
1366
1367 sub git_print_page_nav {
1368         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1369         $extra = '' if !defined $extra; # pager or formats
1370
1371         my @navs = qw(summary shortlog log commit commitdiff tree);
1372         if ($suppress) {
1373                 @navs = grep { $_ ne $suppress } @navs;
1374         }
1375
1376         my %arg = map { $_ => {action=>$_} } @navs;
1377         if (defined $head) {
1378                 for (qw(commit commitdiff)) {
1379                         $arg{$_}{hash} = $head;
1380                 }
1381                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1382                         for (qw(shortlog log)) {
1383                                 $arg{$_}{hash} = $head;
1384                         }
1385                 }
1386         }
1387         $arg{tree}{hash} = $treehead if defined $treehead;
1388         $arg{tree}{hash_base} = $treebase if defined $treebase;
1389
1390         print "<div class=\"page_nav\">\n" .
1391                 (join " | ",
1392                  map { $_ eq $current ?
1393                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1394                  } @navs);
1395         print "<br/>\n$extra<br/>\n" .
1396               "</div>\n";
1397 }
1398
1399 sub format_paging_nav {
1400         my ($action, $hash, $head, $page, $nrevs) = @_;
1401         my $paging_nav;
1402
1403
1404         if ($hash ne $head || $page) {
1405                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1406         } else {
1407                 $paging_nav .= "HEAD";
1408         }
1409
1410         if ($page > 0) {
1411                 $paging_nav .= " &sdot; " .
1412                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1413                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1414         } else {
1415                 $paging_nav .= " &sdot; prev";
1416         }
1417
1418         if ($nrevs >= (100 * ($page+1)-1)) {
1419                 $paging_nav .= " &sdot; " .
1420                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1421                                  -accesskey => "n", -title => "Alt-n"}, "next");
1422         } else {
1423                 $paging_nav .= " &sdot; next";
1424         }
1425
1426         return $paging_nav;
1427 }
1428
1429 ## ......................................................................
1430 ## functions printing or outputting HTML: div
1431
1432 sub git_print_header_div {
1433         my ($action, $title, $hash, $hash_base) = @_;
1434         my %args = ();
1435
1436         $args{action} = $action;
1437         $args{hash} = $hash if $hash;
1438         $args{hash_base} = $hash_base if $hash_base;
1439
1440         print "<div class=\"header\">\n" .
1441               $cgi->a({-href => href(%args), -class => "title"},
1442               $title ? $title : $action) .
1443               "\n</div>\n";
1444 }
1445
1446 #sub git_print_authorship (\%) {
1447 sub git_print_authorship {
1448         my $co = shift;
1449
1450         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1451         print "<div class=\"author_date\">" .
1452               esc_html($co->{'author_name'}) .
1453               " [$ad{'rfc2822'}";
1454         if ($ad{'hour_local'} < 6) {
1455                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1456                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1457         } else {
1458                 printf(" (%02d:%02d %s)",
1459                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1460         }
1461         print "]</div>\n";
1462 }
1463
1464 sub git_print_page_path {
1465         my $name = shift;
1466         my $type = shift;
1467         my $hb = shift;
1468
1469         if (!defined $name) {
1470                 print "<div class=\"page_path\">/</div>\n";
1471         } else {
1472                 my @dirname = split '/', $name;
1473                 my $basename = pop @dirname;
1474                 my $fullname = '';
1475
1476                 print "<div class=\"page_path\">";
1477                 foreach my $dir (@dirname) {
1478                         $fullname .= $dir . '/';
1479                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1480                                                      hash_base=>$hb),
1481                                       -title => $fullname}, esc_html($dir));
1482                         print "/";
1483                 }
1484                 if (defined $type && $type eq 'blob') {
1485                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1486                                                      hash_base=>$hb),
1487                                       -title => $name}, esc_html($basename));
1488                 } elsif (defined $type && $type eq 'tree') {
1489                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1490                                                      hash_base=>$hb),
1491                                       -title => $name}, esc_html($basename));
1492                         print "/";
1493                 } else {
1494                         print esc_html($basename);
1495                 }
1496                 print "<br/></div>\n";
1497         }
1498 }
1499
1500 # sub git_print_log (\@;%) {
1501 sub git_print_log ($;%) {
1502         my $log = shift;
1503         my %opts = @_;
1504
1505         if ($opts{'-remove_title'}) {
1506                 # remove title, i.e. first line of log
1507                 shift @$log;
1508         }
1509         # remove leading empty lines
1510         while (defined $log->[0] && $log->[0] eq "") {
1511                 shift @$log;
1512         }
1513
1514         # print log
1515         my $signoff = 0;
1516         my $empty = 0;
1517         foreach my $line (@$log) {
1518                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1519                         $signoff = 1;
1520                         $empty = 0;
1521                         if (! $opts{'-remove_signoff'}) {
1522                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1523                                 next;
1524                         } else {
1525                                 # remove signoff lines
1526                                 next;
1527                         }
1528                 } else {
1529                         $signoff = 0;
1530                 }
1531
1532                 # print only one empty line
1533                 # do not print empty line after signoff
1534                 if ($line eq "") {
1535                         next if ($empty || $signoff);
1536                         $empty = 1;
1537                 } else {
1538                         $empty = 0;
1539                 }
1540
1541                 print format_log_line_html($line) . "<br/>\n";
1542         }
1543
1544         if ($opts{'-final_empty_line'}) {
1545                 # end with single empty line
1546                 print "<br/>\n" unless $empty;
1547         }
1548 }
1549
1550 sub git_print_simplified_log {
1551         my $log = shift;
1552         my $remove_title = shift;
1553
1554         git_print_log($log,
1555                 -final_empty_line=> 1,
1556                 -remove_title => $remove_title);
1557 }
1558
1559 # print tree entry (row of git_tree), but without encompassing <tr> element
1560 sub git_print_tree_entry {
1561         my ($t, $basedir, $hash_base, $have_blame) = @_;
1562
1563         my %base_key = ();
1564         $base_key{hash_base} = $hash_base if defined $hash_base;
1565
1566         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1567         if ($t->{'type'} eq "blob") {
1568                 print "<td class=\"list\">" .
1569                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1570                                              file_name=>"$basedir$t->{'name'}", %base_key),
1571                               -class => "list"}, esc_html($t->{'name'})) .
1572                       "</td>\n" .
1573                       "<td class=\"link\">" .
1574                       $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1575                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1576                               "blob");
1577                 if ($have_blame) {
1578                         print " | " .
1579                                 $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1580                                                        file_name=>"$basedir$t->{'name'}", %base_key)},
1581                                         "blame");
1582                 }
1583                 if (defined $hash_base) {
1584                         print " | " .
1585                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1586                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1587                                       "history");
1588                 }
1589                 print " | " .
1590                       $cgi->a({-href => href(action=>"blob_plain",
1591                                              hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1592                               "raw") .
1593                       "</td>\n";
1594
1595         } elsif ($t->{'type'} eq "tree") {
1596                 print "<td class=\"list\">" .
1597                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1598                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1599                               esc_html($t->{'name'})) .
1600                       "</td>\n" .
1601                       "<td class=\"link\">" .
1602                       $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1603                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1604                               "tree");
1605                 if (defined $hash_base) {
1606                         print " | " .
1607                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1608                                                      file_name=>"$basedir$t->{'name'}")},
1609                                       "history");
1610                 }
1611                 print "</td>\n";
1612         }
1613 }
1614
1615 ## ......................................................................
1616 ## functions printing large fragments of HTML
1617
1618 sub git_difftree_body {
1619         my ($difftree, $hash, $parent) = @_;
1620
1621         print "<div class=\"list_head\">\n";
1622         if ($#{$difftree} > 10) {
1623                 print(($#{$difftree} + 1) . " files changed:\n");
1624         }
1625         print "</div>\n";
1626
1627         print "<table class=\"diff_tree\">\n";
1628         my $alternate = 0;
1629         my $patchno = 0;
1630         foreach my $line (@{$difftree}) {
1631                 my %diff = parse_difftree_raw_line($line);
1632
1633                 if ($alternate) {
1634                         print "<tr class=\"dark\">\n";
1635                 } else {
1636                         print "<tr class=\"light\">\n";
1637                 }
1638                 $alternate ^= 1;
1639
1640                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1641                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1642                 if ($diff{'to_mode'} ne ('0' x 6)) {
1643                         $to_mode_oct = oct $diff{'to_mode'};
1644                         if (S_ISREG($to_mode_oct)) { # only for regular file
1645                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1646                         }
1647                         $to_file_type = file_type($diff{'to_mode'});
1648                 }
1649                 if ($diff{'from_mode'} ne ('0' x 6)) {
1650                         $from_mode_oct = oct $diff{'from_mode'};
1651                         if (S_ISREG($to_mode_oct)) { # only for regular file
1652                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1653                         }
1654                         $from_file_type = file_type($diff{'from_mode'});
1655                 }
1656
1657                 if ($diff{'status'} eq "A") { # created
1658                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1659                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1660                         $mode_chng   .= "]</span>";
1661                         print "<td>" .
1662                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1663                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1664                                       -class => "list"}, esc_html($diff{'file'})) .
1665                               "</td>\n" .
1666                               "<td>$mode_chng</td>\n" .
1667                               "<td class=\"link\">" .
1668                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1669                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1670                                       "blob");
1671                         if ($action eq 'commitdiff') {
1672                                 # link to patch
1673                                 $patchno++;
1674                                 print " | " .
1675                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1676                         }
1677                         print "</td>\n";
1678
1679                 } elsif ($diff{'status'} eq "D") { # deleted
1680                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1681                         print "<td>" .
1682                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1683                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1684                                        -class => "list"}, esc_html($diff{'file'})) .
1685                               "</td>\n" .
1686                               "<td>$mode_chng</td>\n" .
1687                               "<td class=\"link\">" .
1688                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1689                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1690                                       "blob") .
1691                               " | ";
1692                         if ($action eq 'commitdiff') {
1693                                 # link to patch
1694                                 $patchno++;
1695                                 print " | " .
1696                                       $cgi->a({-href => "#patch$patchno"}, "patch");
1697                         }
1698                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1699                                                      file_name=>$diff{'file'})},
1700                                       "history") .
1701                               "</td>\n";
1702
1703                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1704                         my $mode_chnge = "";
1705                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1706                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1707                                 if ($from_file_type != $to_file_type) {
1708                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1709                                 }
1710                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1711                                         if ($from_mode_str && $to_mode_str) {
1712                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1713                                         } elsif ($to_mode_str) {
1714                                                 $mode_chnge .= " mode: $to_mode_str";
1715                                         }
1716                                 }
1717                                 $mode_chnge .= "]</span>\n";
1718                         }
1719                         print "<td>";
1720                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1721                                 print $cgi->a({-href => href(action=>"blobdiff",
1722                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1723                                                              hash_base=>$hash, hash_parent_base=>$parent,
1724                                                              file_name=>$diff{'file'}),
1725                                               -class => "list"}, esc_html($diff{'file'}));
1726                         } else { # only mode changed
1727                                 print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1728                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1729                                               -class => "list"}, esc_html($diff{'file'}));
1730                         }
1731                         print "</td>\n" .
1732                               "<td>$mode_chnge</td>\n" .
1733                               "<td class=\"link\">" .
1734                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1735                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1736                                       "blob");
1737                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1738                                 if ($action eq 'commitdiff') {
1739                                         # link to patch
1740                                         $patchno++;
1741                                         print " | " .
1742                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1743                                 } else {
1744                                         print " | " .
1745                                                 $cgi->a({-href => href(action=>"blobdiff",
1746                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1747                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1748                                                                        file_name=>$diff{'file'})},
1749                                                         "diff");
1750                                 }
1751                         }
1752                         print " | " .
1753                                 $cgi->a({-href => href(action=>"history",
1754                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1755                                         "history");
1756                         print "</td>\n";
1757
1758                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1759                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1760                         my $nstatus = $status_name{$diff{'status'}};
1761                         my $mode_chng = "";
1762                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1763                                 # mode also for directories, so we cannot use $to_mode_str
1764                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1765                         }
1766                         print "<td>" .
1767                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1768                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1769                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1770                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1771                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1772                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1773                                       -class => "list"}, esc_html($diff{'from_file'})) .
1774                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1775                               "<td class=\"link\">" .
1776                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1777                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'})},
1778                                       "blob");
1779                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1780                                 if ($action eq 'commitdiff') {
1781                                         # link to patch
1782                                         $patchno++;
1783                                         print " | " .
1784                                                 $cgi->a({-href => "#patch$patchno"}, "patch");
1785                                 } else {
1786                                         print " | " .
1787                                                 $cgi->a({-href => href(action=>"blobdiff",
1788                                                                        hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1789                                                                        hash_base=>$hash, hash_parent_base=>$parent,
1790                                                                        file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1791                                                         "diff");
1792                                 }
1793                         }
1794                         print "</td>\n";
1795
1796                 } # we should not encounter Unmerged (U) or Unknown (X) status
1797                 print "</tr>\n";
1798         }
1799         print "</table>\n";
1800 }
1801
1802 sub git_patchset_body {
1803         my ($fd, $difftree, $hash, $hash_parent) = @_;
1804
1805         my $patch_idx = 0;
1806         my $in_header = 0;
1807         my $patch_found = 0;
1808         my $diffinfo;
1809
1810         print "<div class=\"patchset\">\n";
1811
1812         LINE:
1813         while (my $patch_line = <$fd>) {
1814                 chomp $patch_line;
1815
1816                 if ($patch_line =~ m/^diff /) { # "git diff" header
1817                         # beginning of patch (in patchset)
1818                         if ($patch_found) {
1819                                 # close previous patch
1820                                 print "</div>\n"; # class="patch"
1821                         } else {
1822                                 # first patch in patchset
1823                                 $patch_found = 1;
1824                         }
1825                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1826
1827                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1828                                 $diffinfo = $difftree->[$patch_idx];
1829                         } else {
1830                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1831                         }
1832                         $patch_idx++;
1833
1834                         # for now, no extended header, hence we skip empty patches
1835                         # companion to  next LINE if $in_header;
1836                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1837                                 $in_header = 1;
1838                                 next LINE;
1839                         }
1840
1841                         if ($diffinfo->{'status'} eq "A") { # added
1842                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1843                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1844                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1845                                               $diffinfo->{'to_id'}) . "(new)" .
1846                                       "</div>\n"; # class="diff_info"
1847
1848                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1849                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1850                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1851                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1852                                               $diffinfo->{'from_id'}) . "(deleted)" .
1853                                       "</div>\n"; # class="diff_info"
1854
1855                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1856                                  $diffinfo->{'status'} eq "C" || # copied
1857                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1858                                 print "<div class=\"diff_info\">" .
1859                                       file_type($diffinfo->{'from_mode'}) . ":" .
1860                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1861                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1862                                               $diffinfo->{'from_id'}) .
1863                                       " -> " .
1864                                       file_type($diffinfo->{'to_mode'}) . ":" .
1865                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1866                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1867                                               $diffinfo->{'to_id'});
1868                                 print "</div>\n"; # class="diff_info"
1869
1870                         } else { # modified, mode changed, ...
1871                                 print "<div class=\"diff_info\">" .
1872                                       file_type($diffinfo->{'from_mode'}) . ":" .
1873                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1874                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1875                                               $diffinfo->{'from_id'}) .
1876                                       " -> " .
1877                                       file_type($diffinfo->{'to_mode'}) . ":" .
1878                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1879                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1880                                               $diffinfo->{'to_id'});
1881                                 print "</div>\n"; # class="diff_info"
1882                         }
1883
1884                         #print "<div class=\"diff extended_header\">\n";
1885                         $in_header = 1;
1886                         next LINE;
1887                 } # start of patch in patchset
1888
1889
1890                 if ($in_header && $patch_line =~ m/^---/) {
1891                         #print "</div>\n"; # class="diff extended_header"
1892                         $in_header = 0;
1893
1894                         my $file = $diffinfo->{'from_file'};
1895                         $file  ||= $diffinfo->{'file'};
1896                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1897                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
1898                                         -class => "list"}, esc_html($file));
1899                         $patch_line =~ s|a/.*$|a/$file|g;
1900                         print "<div class=\"diff from_file\">$patch_line</div>\n";
1901
1902                         $patch_line = <$fd>;
1903                         chomp $patch_line;
1904
1905                         #$patch_line =~ m/^+++/;
1906                         $file    = $diffinfo->{'to_file'};
1907                         $file  ||= $diffinfo->{'file'};
1908                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1909                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
1910                                         -class => "list"}, esc_html($file));
1911                         $patch_line =~ s|b/.*|b/$file|g;
1912                         print "<div class=\"diff to_file\">$patch_line</div>\n";
1913
1914                         next LINE;
1915                 }
1916                 next LINE if $in_header;
1917
1918                 print format_diff_line($patch_line);
1919         }
1920         print "</div>\n" if $patch_found; # class="patch"
1921
1922         print "</div>\n"; # class="patchset"
1923 }
1924
1925 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1926
1927 sub git_shortlog_body {
1928         # uses global variable $project
1929         my ($revlist, $from, $to, $refs, $extra) = @_;
1930
1931         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
1932         my $have_snapshot = (defined $ctype && defined $suffix);
1933
1934         $from = 0 unless defined $from;
1935         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1936
1937         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1938         my $alternate = 0;
1939         for (my $i = $from; $i <= $to; $i++) {
1940                 my $commit = $revlist->[$i];
1941                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1942                 my $ref = format_ref_marker($refs, $commit);
1943                 my %co = parse_commit($commit);
1944                 if ($alternate) {
1945                         print "<tr class=\"dark\">\n";
1946                 } else {
1947                         print "<tr class=\"light\">\n";
1948                 }
1949                 $alternate ^= 1;
1950                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1951                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1952                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1953                       "<td>";
1954                 print format_subject_html($co{'title'}, $co{'title_short'},
1955                                           href(action=>"commit", hash=>$commit), $ref);
1956                 print "</td>\n" .
1957                       "<td class=\"link\">" .
1958                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1959                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
1960                 if ($have_snapshot) {
1961                         print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
1962                 }
1963                 print "</td>\n" .
1964                       "</tr>\n";
1965         }
1966         if (defined $extra) {
1967                 print "<tr>\n" .
1968                       "<td colspan=\"4\">$extra</td>\n" .
1969                       "</tr>\n";
1970         }
1971         print "</table>\n";
1972 }
1973
1974 sub git_history_body {
1975         # Warning: assumes constant type (blob or tree) during history
1976         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
1977
1978         $from = 0 unless defined $from;
1979         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
1980
1981         print "<table class=\"history\" cellspacing=\"0\">\n";
1982         my $alternate = 0;
1983         for (my $i = $from; $i <= $to; $i++) {
1984                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
1985                         next;
1986                 }
1987
1988                 my $commit = $1;
1989                 my %co = parse_commit($commit);
1990                 if (!%co) {
1991                         next;
1992                 }
1993
1994                 my $ref = format_ref_marker($refs, $commit);
1995
1996                 if ($alternate) {
1997                         print "<tr class=\"dark\">\n";
1998                 } else {
1999                         print "<tr class=\"light\">\n";
2000                 }
2001                 $alternate ^= 1;
2002                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2003                       # shortlog uses      chop_str($co{'author_name'}, 10)
2004                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2005                       "<td>";
2006                 # originally git_history used chop_str($co{'title'}, 50)
2007                 print format_subject_html($co{'title'}, $co{'title_short'},
2008                                           href(action=>"commit", hash=>$commit), $ref);
2009                 print "</td>\n" .
2010                       "<td class=\"link\">" .
2011                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2012                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2013                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
2014
2015                 if ($ftype eq 'blob') {
2016                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2017                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2018                         if (defined $blob_current && defined $blob_parent &&
2019                                         $blob_current ne $blob_parent) {
2020                                 print " | " .
2021                                         $cgi->a({-href => href(action=>"blobdiff",
2022                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2023                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2024                                                                file_name=>$file_name)},
2025                                                 "diff to current");
2026                         }
2027                 }
2028                 print "</td>\n" .
2029                       "</tr>\n";
2030         }
2031         if (defined $extra) {
2032                 print "<tr>\n" .
2033                       "<td colspan=\"4\">$extra</td>\n" .
2034                       "</tr>\n";
2035         }
2036         print "</table>\n";
2037 }
2038
2039 sub git_tags_body {
2040         # uses global variable $project
2041         my ($taglist, $from, $to, $extra) = @_;
2042         $from = 0 unless defined $from;
2043         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2044
2045         print "<table class=\"tags\" cellspacing=\"0\">\n";
2046         my $alternate = 0;
2047         for (my $i = $from; $i <= $to; $i++) {
2048                 my $entry = $taglist->[$i];
2049                 my %tag = %$entry;
2050                 my $comment_lines = $tag{'comment'};
2051                 my $comment = shift @$comment_lines;
2052                 my $comment_short;
2053                 if (defined $comment) {
2054                         $comment_short = chop_str($comment, 30, 5);
2055                 }
2056                 if ($alternate) {
2057                         print "<tr class=\"dark\">\n";
2058                 } else {
2059                         print "<tr class=\"light\">\n";
2060                 }
2061                 $alternate ^= 1;
2062                 print "<td><i>$tag{'age'}</i></td>\n" .
2063                       "<td>" .
2064                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2065                                -class => "list name"}, esc_html($tag{'name'})) .
2066                       "</td>\n" .
2067                       "<td>";
2068                 if (defined $comment) {
2069                         print format_subject_html($comment, $comment_short,
2070                                                   href(action=>"tag", hash=>$tag{'id'}));
2071                 }
2072                 print "</td>\n" .
2073                       "<td class=\"selflink\">";
2074                 if ($tag{'type'} eq "tag") {
2075                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2076                 } else {
2077                         print "&nbsp;";
2078                 }
2079                 print "</td>\n" .
2080                       "<td class=\"link\">" . " | " .
2081                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2082                 if ($tag{'reftype'} eq "commit") {
2083                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2084                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2085                 } elsif ($tag{'reftype'} eq "blob") {
2086                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2087                 }
2088                 print "</td>\n" .
2089                       "</tr>";
2090         }
2091         if (defined $extra) {
2092                 print "<tr>\n" .
2093                       "<td colspan=\"5\">$extra</td>\n" .
2094                       "</tr>\n";
2095         }
2096         print "</table>\n";
2097 }
2098
2099 sub git_heads_body {
2100         # uses global variable $project
2101         my ($taglist, $head, $from, $to, $extra) = @_;
2102         $from = 0 unless defined $from;
2103         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2104
2105         print "<table class=\"heads\" cellspacing=\"0\">\n";
2106         my $alternate = 0;
2107         for (my $i = $from; $i <= $to; $i++) {
2108                 my $entry = $taglist->[$i];
2109                 my %tag = %$entry;
2110                 my $curr = $tag{'id'} eq $head;
2111                 if ($alternate) {
2112                         print "<tr class=\"dark\">\n";
2113                 } else {
2114                         print "<tr class=\"light\">\n";
2115                 }
2116                 $alternate ^= 1;
2117                 print "<td><i>$tag{'age'}</i></td>\n" .
2118                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2119                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2120                                -class => "list name"},esc_html($tag{'name'})) .
2121                       "</td>\n" .
2122                       "<td class=\"link\">" .
2123                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2124                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") .
2125                       "</td>\n" .
2126                       "</tr>";
2127         }
2128         if (defined $extra) {
2129                 print "<tr>\n" .
2130                       "<td colspan=\"3\">$extra</td>\n" .
2131                       "</tr>\n";
2132         }
2133         print "</table>\n";
2134 }
2135
2136 ## ======================================================================
2137 ## ======================================================================
2138 ## actions
2139
2140 sub git_project_list {
2141         my $order = $cgi->param('o');
2142         if (defined $order && $order !~ m/project|descr|owner|age/) {
2143                 die_error(undef, "Unknown order parameter");
2144         }
2145
2146         my @list = git_get_projects_list();
2147         my @projects;
2148         if (!@list) {
2149                 die_error(undef, "No projects found");
2150         }
2151         foreach my $pr (@list) {
2152                 my $head = git_get_head_hash($pr->{'path'});
2153                 if (!defined $head) {
2154                         next;
2155                 }
2156                 $git_dir = "$projectroot/$pr->{'path'}";
2157                 my %co = parse_commit($head);
2158                 if (!%co) {
2159                         next;
2160                 }
2161                 $pr->{'commit'} = \%co;
2162                 if (!defined $pr->{'descr'}) {
2163                         my $descr = git_get_project_description($pr->{'path'}) || "";
2164                         $pr->{'descr'} = chop_str($descr, 25, 5);
2165                 }
2166                 if (!defined $pr->{'owner'}) {
2167                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2168                 }
2169                 push @projects, $pr;
2170         }
2171
2172         git_header_html();
2173         if (-f $home_text) {
2174                 print "<div class=\"index_include\">\n";
2175                 open (my $fd, $home_text);
2176                 print <$fd>;
2177                 close $fd;
2178                 print "</div>\n";
2179         }
2180         print "<table class=\"project_list\">\n" .
2181               "<tr>\n";
2182         $order ||= "project";
2183         if ($order eq "project") {
2184                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2185                 print "<th>Project</th>\n";
2186         } else {
2187                 print "<th>" .
2188                       $cgi->a({-href => href(project=>undef, order=>'project'),
2189                                -class => "header"}, "Project") .
2190                       "</th>\n";
2191         }
2192         if ($order eq "descr") {
2193                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2194                 print "<th>Description</th>\n";
2195         } else {
2196                 print "<th>" .
2197                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2198                                -class => "header"}, "Description") .
2199                       "</th>\n";
2200         }
2201         if ($order eq "owner") {
2202                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2203                 print "<th>Owner</th>\n";
2204         } else {
2205                 print "<th>" .
2206                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2207                                -class => "header"}, "Owner") .
2208                       "</th>\n";
2209         }
2210         if ($order eq "age") {
2211                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2212                 print "<th>Last Change</th>\n";
2213         } else {
2214                 print "<th>" .
2215                       $cgi->a({-href => href(project=>undef, order=>'age'),
2216                                -class => "header"}, "Last Change") .
2217                       "</th>\n";
2218         }
2219         print "<th></th>\n" .
2220               "</tr>\n";
2221         my $alternate = 0;
2222         foreach my $pr (@projects) {
2223                 if ($alternate) {
2224                         print "<tr class=\"dark\">\n";
2225                 } else {
2226                         print "<tr class=\"light\">\n";
2227                 }
2228                 $alternate ^= 1;
2229                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2230                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2231                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2232                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2233                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2234                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2235                       "<td class=\"link\">" .
2236                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2237                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2238                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") .
2239                       "</td>\n" .
2240                       "</tr>\n";
2241         }
2242         print "</table>\n";
2243         git_footer_html();
2244 }
2245
2246 sub git_project_index {
2247         my @projects = git_get_projects_list();
2248
2249         print $cgi->header(
2250                 -type => 'text/plain',
2251                 -charset => 'utf-8',
2252                 -content_disposition => qq(inline; filename="index.aux"));
2253
2254         foreach my $pr (@projects) {
2255                 if (!exists $pr->{'owner'}) {
2256                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2257                 }
2258
2259                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2260                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2261                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2262                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2263                 $path  =~ s/ /\+/g;
2264                 $owner =~ s/ /\+/g;
2265
2266                 print "$path $owner\n";
2267         }
2268 }
2269
2270 sub git_summary {
2271         my $descr = git_get_project_description($project) || "none";
2272         my $head = git_get_head_hash($project);
2273         my %co = parse_commit($head);
2274         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2275
2276         my $owner = git_get_project_owner($project);
2277
2278         my $refs = git_get_references();
2279         git_header_html();
2280         git_print_page_nav('summary','', $head);
2281
2282         print "<div class=\"title\">&nbsp;</div>\n";
2283         print "<table cellspacing=\"0\">\n" .
2284               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2285               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2286               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2287         # use per project git URL list in $projectroot/$project/cloneurl
2288         # or make project git URL from git base URL and project name
2289         my $url_tag = "URL";
2290         my @url_list = git_get_project_url_list($project);
2291         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2292         foreach my $git_url (@url_list) {
2293                 next unless $git_url;
2294                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2295                 $url_tag = "";
2296         }
2297         print "</table>\n";
2298
2299         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2300                 git_get_head_hash($project)
2301                 or die_error(undef, "Open git-rev-list failed");
2302         my @revlist = map { chomp; $_ } <$fd>;
2303         close $fd;
2304         git_print_header_div('shortlog');
2305         git_shortlog_body(\@revlist, 0, 15, $refs,
2306                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2307
2308         my $taglist = git_get_refs_list("refs/tags");
2309         if (defined @$taglist) {
2310                 git_print_header_div('tags');
2311                 git_tags_body($taglist, 0, 15,
2312                               $cgi->a({-href => href(action=>"tags")}, "..."));
2313         }
2314
2315         my $headlist = git_get_refs_list("refs/heads");
2316         if (defined @$headlist) {
2317                 git_print_header_div('heads');
2318                 git_heads_body($headlist, $head, 0, 15,
2319                                $cgi->a({-href => href(action=>"heads")}, "..."));
2320         }
2321
2322         git_footer_html();
2323 }
2324
2325 sub git_tag {
2326         my $head = git_get_head_hash($project);
2327         git_header_html();
2328         git_print_page_nav('','', $head,undef,$head);
2329         my %tag = parse_tag($hash);
2330         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2331         print "<div class=\"title_text\">\n" .
2332               "<table cellspacing=\"0\">\n" .
2333               "<tr>\n" .
2334               "<td>object</td>\n" .
2335               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2336                                $tag{'object'}) . "</td>\n" .
2337               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2338                                               $tag{'type'}) . "</td>\n" .
2339               "</tr>\n";
2340         if (defined($tag{'author'})) {
2341                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2342                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2343                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2344                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2345                         "</td></tr>\n";
2346         }
2347         print "</table>\n\n" .
2348               "</div>\n";
2349         print "<div class=\"page_body\">";
2350         my $comment = $tag{'comment'};
2351         foreach my $line (@$comment) {
2352                 print esc_html($line) . "<br/>\n";
2353         }
2354         print "</div>\n";
2355         git_footer_html();
2356 }
2357
2358 sub git_blame2 {
2359         my $fd;
2360         my $ftype;
2361
2362         my ($have_blame) = gitweb_check_feature('blame');
2363         if (!$have_blame) {
2364                 die_error('403 Permission denied', "Permission denied");
2365         }
2366         die_error('404 Not Found', "File name not defined") if (!$file_name);
2367         $hash_base ||= git_get_head_hash($project);
2368         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2369         my %co = parse_commit($hash_base)
2370                 or die_error(undef, "Reading commit failed");
2371         if (!defined $hash) {
2372                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2373                         or die_error(undef, "Error looking up file");
2374         }
2375         $ftype = git_get_type($hash);
2376         if ($ftype !~ "blob") {
2377                 die_error("400 Bad Request", "Object is not a blob");
2378         }
2379         open ($fd, "-|", git_cmd(), "blame", '-l', $file_name, $hash_base)
2380                 or die_error(undef, "Open git-blame failed");
2381         git_header_html();
2382         my $formats_nav =
2383                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2384                         "blob") .
2385                 " | " .
2386                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2387                         "head");
2388         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2389         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2390         git_print_page_path($file_name, $ftype, $hash_base);
2391         my @rev_color = (qw(light2 dark2));
2392         my $num_colors = scalar(@rev_color);
2393         my $current_color = 0;
2394         my $last_rev;
2395         print <<HTML;
2396 <div class="page_body">
2397 <table class="blame">
2398 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2399 HTML
2400         while (<$fd>) {
2401                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2402                 my $full_rev = $1;
2403                 my $rev = substr($full_rev, 0, 8);
2404                 my $lineno = $2;
2405                 my $data = $3;
2406
2407                 if (!defined $last_rev) {
2408                         $last_rev = $full_rev;
2409                 } elsif ($last_rev ne $full_rev) {
2410                         $last_rev = $full_rev;
2411                         $current_color = ++$current_color % $num_colors;
2412                 }
2413                 print "<tr class=\"$rev_color[$current_color]\">\n";
2414                 print "<td class=\"sha1\">" .
2415                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2416                                 esc_html($rev)) . "</td>\n";
2417                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2418                       esc_html($lineno) . "</a></td>\n";
2419                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2420                 print "</tr>\n";
2421         }
2422         print "</table>\n";
2423         print "</div>";
2424         close $fd
2425                 or print "Reading blob failed\n";
2426         git_footer_html();
2427 }
2428
2429 sub git_blame {
2430         my $fd;
2431
2432         my ($have_blame) = gitweb_check_feature('blame');
2433         if (!$have_blame) {
2434                 die_error('403 Permission denied', "Permission denied");
2435         }
2436         die_error('404 Not Found', "File name not defined") if (!$file_name);
2437         $hash_base ||= git_get_head_hash($project);
2438         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2439         my %co = parse_commit($hash_base)
2440                 or die_error(undef, "Reading commit failed");
2441         if (!defined $hash) {
2442                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2443                         or die_error(undef, "Error lookup file");
2444         }
2445         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2446                 or die_error(undef, "Open git-annotate failed");
2447         git_header_html();
2448         my $formats_nav =
2449                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2450                         "blob") .
2451                 " | " .
2452                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2453                         "head");
2454         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2455         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2456         git_print_page_path($file_name, 'blob', $hash_base);
2457         print "<div class=\"page_body\">\n";
2458         print <<HTML;
2459 <table class="blame">
2460   <tr>
2461     <th>Commit</th>
2462     <th>Age</th>
2463     <th>Author</th>
2464     <th>Line</th>
2465     <th>Data</th>
2466   </tr>
2467 HTML
2468         my @line_class = (qw(light dark));
2469         my $line_class_len = scalar (@line_class);
2470         my $line_class_num = $#line_class;
2471         while (my $line = <$fd>) {
2472                 my $long_rev;
2473                 my $short_rev;
2474                 my $author;
2475                 my $time;
2476                 my $lineno;
2477                 my $data;
2478                 my $age;
2479                 my $age_str;
2480                 my $age_class;
2481
2482                 chomp $line;
2483                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2484
2485                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2486                         $long_rev = $1;
2487                         $author   = $2;
2488                         $time     = $3;
2489                         $lineno   = $4;
2490                         $data     = $5;
2491                 } else {
2492                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2493                         next;
2494                 }
2495                 $short_rev  = substr ($long_rev, 0, 8);
2496                 $age        = time () - $time;
2497                 $age_str    = age_string ($age);
2498                 $age_str    =~ s/ /&nbsp;/g;
2499                 $age_class  = age_class($age);
2500                 $author     = esc_html ($author);
2501                 $author     =~ s/ /&nbsp;/g;
2502
2503                 $data = untabify($data);
2504                 $data = esc_html ($data);
2505
2506                 print <<HTML;
2507   <tr class="$line_class[$line_class_num]">
2508     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2509     <td class="$age_class">$age_str</td>
2510     <td>$author</td>
2511     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2512     <td class="pre">$data</td>
2513   </tr>
2514 HTML
2515         } # while (my $line = <$fd>)
2516         print "</table>\n\n";
2517         close $fd
2518                 or print "Reading blob failed.\n";
2519         print "</div>";
2520         git_footer_html();
2521 }
2522
2523 sub git_tags {
2524         my $head = git_get_head_hash($project);
2525         git_header_html();
2526         git_print_page_nav('','', $head,undef,$head);
2527         git_print_header_div('summary', $project);
2528
2529         my $taglist = git_get_refs_list("refs/tags");
2530         if (defined @$taglist) {
2531                 git_tags_body($taglist);
2532         }
2533         git_footer_html();
2534 }
2535
2536 sub git_heads {
2537         my $head = git_get_head_hash($project);
2538         git_header_html();
2539         git_print_page_nav('','', $head,undef,$head);
2540         git_print_header_div('summary', $project);
2541
2542         my $taglist = git_get_refs_list("refs/heads");
2543         if (defined @$taglist) {
2544                 git_heads_body($taglist, $head);
2545         }
2546         git_footer_html();
2547 }
2548
2549 sub git_blob_plain {
2550         my $expires;
2551
2552         if (!defined $hash) {
2553                 if (defined $file_name) {
2554                         my $base = $hash_base || git_get_head_hash($project);
2555                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2556                                 or die_error(undef, "Error lookup file");
2557                 } else {
2558                         die_error(undef, "No file name defined");
2559                 }
2560         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2561                 # blobs defined by non-textual hash id's can be cached
2562                 $expires = "+1d";
2563         }
2564
2565         my $type = shift;
2566         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2567                 or die_error(undef, "Couldn't cat $file_name, $hash");
2568
2569         $type ||= blob_mimetype($fd, $file_name);
2570
2571         # save as filename, even when no $file_name is given
2572         my $save_as = "$hash";
2573         if (defined $file_name) {
2574                 $save_as = $file_name;
2575         } elsif ($type =~ m/^text\//) {
2576                 $save_as .= '.txt';
2577         }
2578
2579         print $cgi->header(
2580                 -type => "$type",
2581                 -expires=>$expires,
2582                 -content_disposition => "inline; filename=\"$save_as\"");
2583         undef $/;
2584         binmode STDOUT, ':raw';
2585         print <$fd>;
2586         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2587         $/ = "\n";
2588         close $fd;
2589 }
2590
2591 sub git_blob {
2592         my $expires;
2593
2594         if (!defined $hash) {
2595                 if (defined $file_name) {
2596                         my $base = $hash_base || git_get_head_hash($project);
2597                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2598                                 or die_error(undef, "Error lookup file");
2599                 } else {
2600                         die_error(undef, "No file name defined");
2601                 }
2602         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2603                 # blobs defined by non-textual hash id's can be cached
2604                 $expires = "+1d";
2605         }
2606
2607         my ($have_blame) = gitweb_check_feature('blame');
2608         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2609                 or die_error(undef, "Couldn't cat $file_name, $hash");
2610         my $mimetype = blob_mimetype($fd, $file_name);
2611         if ($mimetype !~ m/^text\//) {
2612                 close $fd;
2613                 return git_blob_plain($mimetype);
2614         }
2615         git_header_html(undef, $expires);
2616         my $formats_nav = '';
2617         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2618                 if (defined $file_name) {
2619                         if ($have_blame) {
2620                                 $formats_nav .=
2621                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2622                                                                hash=>$hash, file_name=>$file_name)},
2623                                                 "blame") .
2624                                         " | ";
2625                         }
2626                         $formats_nav .=
2627                                 $cgi->a({-href => href(action=>"blob_plain",
2628                                                        hash=>$hash, file_name=>$file_name)},
2629                                         "plain") .
2630                                 " | " .
2631                                 $cgi->a({-href => href(action=>"blob",
2632                                                        hash_base=>"HEAD", file_name=>$file_name)},
2633                                         "head");
2634                 } else {
2635                         $formats_nav .=
2636                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "plain");
2637                 }
2638                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2639                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2640         } else {
2641                 print "<div class=\"page_nav\">\n" .
2642                       "<br/><br/></div>\n" .
2643                       "<div class=\"title\">$hash</div>\n";
2644         }
2645         git_print_page_path($file_name, "blob", $hash_base);
2646         print "<div class=\"page_body\">\n";
2647         my $nr;
2648         while (my $line = <$fd>) {
2649                 chomp $line;
2650                 $nr++;
2651                 $line = untabify($line);
2652                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2653                        $nr, $nr, $nr, esc_html($line);
2654         }
2655         close $fd
2656                 or print "Reading blob failed.\n";
2657         print "</div>";
2658         git_footer_html();
2659 }
2660
2661 sub git_tree {
2662         if (!defined $hash) {
2663                 $hash = git_get_head_hash($project);
2664                 if (defined $file_name) {
2665                         my $base = $hash_base || $hash;
2666                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2667                 }
2668                 if (!defined $hash_base) {
2669                         $hash_base = $hash;
2670                 }
2671         }
2672         $/ = "\0";
2673         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2674                 or die_error(undef, "Open git-ls-tree failed");
2675         my @entries = map { chomp; $_ } <$fd>;
2676         close $fd or die_error(undef, "Reading tree failed");
2677         $/ = "\n";
2678
2679         my $refs = git_get_references();
2680         my $ref = format_ref_marker($refs, $hash_base);
2681         git_header_html();
2682         my $base = "";
2683         my ($have_blame) = gitweb_check_feature('blame');
2684         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2685                 git_print_page_nav('tree','', $hash_base);
2686                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2687         } else {
2688                 undef $hash_base;
2689                 print "<div class=\"page_nav\">\n";
2690                 print "<br/><br/></div>\n";
2691                 print "<div class=\"title\">$hash</div>\n";
2692         }
2693         if (defined $file_name) {
2694                 $base = esc_html("$file_name/");
2695         }
2696         git_print_page_path($file_name, 'tree', $hash_base);
2697         print "<div class=\"page_body\">\n";
2698         print "<table cellspacing=\"0\">\n";
2699         my $alternate = 0;
2700         foreach my $line (@entries) {
2701                 my %t = parse_ls_tree_line($line, -z => 1);
2702
2703                 if ($alternate) {
2704                         print "<tr class=\"dark\">\n";
2705                 } else {
2706                         print "<tr class=\"light\">\n";
2707                 }
2708                 $alternate ^= 1;
2709
2710                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2711
2712                 print "</tr>\n";
2713         }
2714         print "</table>\n" .
2715               "</div>";
2716         git_footer_html();
2717 }
2718
2719 sub git_snapshot {
2720
2721         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2722         my $have_snapshot = (defined $ctype && defined $suffix);
2723         if (!$have_snapshot) {
2724                 die_error('403 Permission denied', "Permission denied");
2725         }
2726
2727         if (!defined $hash) {
2728                 $hash = git_get_head_hash($project);
2729         }
2730
2731         my $filename = basename($project) . "-$hash.tar.$suffix";
2732
2733         print $cgi->header(-type => 'application/x-tar',
2734                            -content_encoding => $ctype,
2735                            -content_disposition => "inline; filename=\"$filename\"",
2736                            -status => '200 OK');
2737
2738         my $git_command = git_cmd_str();
2739         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2740                 die_error(undef, "Execute git-tar-tree failed.");
2741         binmode STDOUT, ':raw';
2742         print <$fd>;
2743         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2744         close $fd;
2745
2746 }
2747
2748 sub git_log {
2749         my $head = git_get_head_hash($project);
2750         if (!defined $hash) {
2751                 $hash = $head;
2752         }
2753         if (!defined $page) {
2754                 $page = 0;
2755         }
2756         my $refs = git_get_references();
2757
2758         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2759         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2760                 or die_error(undef, "Open git-rev-list failed");
2761         my @revlist = map { chomp; $_ } <$fd>;
2762         close $fd;
2763
2764         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2765
2766         git_header_html();
2767         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2768
2769         if (!@revlist) {
2770                 my %co = parse_commit($hash);
2771
2772                 git_print_header_div('summary', $project);
2773                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2774         }
2775         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2776                 my $commit = $revlist[$i];
2777                 my $ref = format_ref_marker($refs, $commit);
2778                 my %co = parse_commit($commit);
2779                 next if !%co;
2780                 my %ad = parse_date($co{'author_epoch'});
2781                 git_print_header_div('commit',
2782                                "<span class=\"age\">$co{'age_string'}</span>" .
2783                                esc_html($co{'title'}) . $ref,
2784                                $commit);
2785                 print "<div class=\"title_text\">\n" .
2786                       "<div class=\"log_link\">\n" .
2787                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2788                       " | " .
2789                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2790                       "<br/>\n" .
2791                       "</div>\n" .
2792                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2793                       "</div>\n";
2794
2795                 print "<div class=\"log_body\">\n";
2796                 git_print_simplified_log($co{'comment'});
2797                 print "</div>\n";
2798         }
2799         git_footer_html();
2800 }
2801
2802 sub git_commit {
2803         my %co = parse_commit($hash);
2804         if (!%co) {
2805                 die_error(undef, "Unknown commit object");
2806         }
2807         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2808         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2809
2810         my $parent = $co{'parent'};
2811         if (!defined $parent) {
2812                 $parent = "--root";
2813         }
2814         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2815                 or die_error(undef, "Open git-diff-tree failed");
2816         my @difftree = map { chomp; $_ } <$fd>;
2817         close $fd or die_error(undef, "Reading git-diff-tree failed");
2818
2819         # non-textual hash id's can be cached
2820         my $expires;
2821         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2822                 $expires = "+1d";
2823         }
2824         my $refs = git_get_references();
2825         my $ref = format_ref_marker($refs, $co{'id'});
2826
2827         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2828         my $have_snapshot = (defined $ctype && defined $suffix);
2829
2830         my $formats_nav = '';
2831         if (defined $file_name && defined $co{'parent'}) {
2832                 my $parent = $co{'parent'};
2833                 $formats_nav .=
2834                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2835                                 "blame");
2836         }
2837         git_header_html(undef, $expires);
2838         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2839                            $hash, $co{'tree'}, $hash,
2840                            $formats_nav);
2841
2842         if (defined $co{'parent'}) {
2843                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2844         } else {
2845                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2846         }
2847         print "<div class=\"title_text\">\n" .
2848               "<table cellspacing=\"0\">\n";
2849         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2850               "<tr>" .
2851               "<td></td><td> $ad{'rfc2822'}";
2852         if ($ad{'hour_local'} < 6) {
2853                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2854                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2855         } else {
2856                 printf(" (%02d:%02d %s)",
2857                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2858         }
2859         print "</td>" .
2860               "</tr>\n";
2861         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2862         print "<tr><td></td><td> $cd{'rfc2822'}" .
2863               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2864               "</td></tr>\n";
2865         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2866         print "<tr>" .
2867               "<td>tree</td>" .
2868               "<td class=\"sha1\">" .
2869               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2870                        class => "list"}, $co{'tree'}) .
2871               "</td>" .
2872               "<td class=\"link\">" .
2873               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2874                       "tree");
2875         if ($have_snapshot) {
2876                 print " | " .
2877                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2878         }
2879         print "</td>" .
2880               "</tr>\n";
2881         my $parents = $co{'parents'};
2882         foreach my $par (@$parents) {
2883                 print "<tr>" .
2884                       "<td>parent</td>" .
2885                       "<td class=\"sha1\">" .
2886                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2887                                class => "list"}, $par) .
2888                       "</td>" .
2889                       "<td class=\"link\">" .
2890                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2891                       " | " .
2892                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
2893                       "</td>" .
2894                       "</tr>\n";
2895         }
2896         print "</table>".
2897               "</div>\n";
2898
2899         print "<div class=\"page_body\">\n";
2900         git_print_log($co{'comment'});
2901         print "</div>\n";
2902
2903         git_difftree_body(\@difftree, $hash, $parent);
2904
2905         git_footer_html();
2906 }
2907
2908 sub git_blobdiff {
2909         my $format = shift || 'html';
2910
2911         my $fd;
2912         my @difftree;
2913         my %diffinfo;
2914         my $expires;
2915
2916         # preparing $fd and %diffinfo for git_patchset_body
2917         # new style URI
2918         if (defined $hash_base && defined $hash_parent_base) {
2919                 if (defined $file_name) {
2920                         # read raw output
2921                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
2922                                 "--", $file_name
2923                                 or die_error(undef, "Open git-diff-tree failed");
2924                         @difftree = map { chomp; $_ } <$fd>;
2925                         close $fd
2926                                 or die_error(undef, "Reading git-diff-tree failed");
2927                         @difftree
2928                                 or die_error('404 Not Found', "Blob diff not found");
2929
2930                 } elsif (defined $hash &&
2931                          $hash =~ /[0-9a-fA-F]{40}/) {
2932                         # try to find filename from $hash
2933
2934                         # read filtered raw output
2935                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
2936                                 or die_error(undef, "Open git-diff-tree failed");
2937                         @difftree =
2938                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
2939                                 # $hash == to_id
2940                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
2941                                 map { chomp; $_ } <$fd>;
2942                         close $fd
2943                                 or die_error(undef, "Reading git-diff-tree failed");
2944                         @difftree
2945                                 or die_error('404 Not Found', "Blob diff not found");
2946
2947                 } else {
2948                         die_error('404 Not Found', "Missing one of the blob diff parameters");
2949                 }
2950
2951                 if (@difftree > 1) {
2952                         die_error('404 Not Found', "Ambiguous blob diff specification");
2953                 }
2954
2955                 %diffinfo = parse_difftree_raw_line($difftree[0]);
2956                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
2957                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
2958
2959                 $hash_parent ||= $diffinfo{'from_id'};
2960                 $hash        ||= $diffinfo{'to_id'};
2961
2962                 # non-textual hash id's can be cached
2963                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
2964                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
2965                         $expires = '+1d';
2966                 }
2967
2968                 # open patch output
2969                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
2970                         '-p', $hash_parent_base, $hash_base,
2971                         "--", $file_name
2972                         or die_error(undef, "Open git-diff-tree failed");
2973         }
2974
2975         # old/legacy style URI
2976         if (!%diffinfo && # if new style URI failed
2977             defined $hash && defined $hash_parent) {
2978                 # fake git-diff-tree raw output
2979                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
2980                 $diffinfo{'from_id'} = $hash_parent;
2981                 $diffinfo{'to_id'}   = $hash;
2982                 if (defined $file_name) {
2983                         if (defined $file_parent) {
2984                                 $diffinfo{'status'} = '2';
2985                                 $diffinfo{'from_file'} = $file_parent;
2986                                 $diffinfo{'to_file'}   = $file_name;
2987                         } else { # assume not renamed
2988                                 $diffinfo{'status'} = '1';
2989                                 $diffinfo{'from_file'} = $file_name;
2990                                 $diffinfo{'to_file'}   = $file_name;
2991                         }
2992                 } else { # no filename given
2993                         $diffinfo{'status'} = '2';
2994                         $diffinfo{'from_file'} = $hash_parent;
2995                         $diffinfo{'to_file'}   = $hash;
2996                 }
2997
2998                 # non-textual hash id's can be cached
2999                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3000                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3001                         $expires = '+1d';
3002                 }
3003
3004                 # open patch output
3005                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3006                         or die_error(undef, "Open git-diff failed");
3007         } else  {
3008                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3009                         unless %diffinfo;
3010         }
3011
3012         # header
3013         if ($format eq 'html') {
3014                 my $formats_nav =
3015                         $cgi->a({-href => href(action=>"blobdiff_plain",
3016                                                hash=>$hash, hash_parent=>$hash_parent,
3017                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3018                                                file_name=>$file_name, file_parent=>$file_parent)},
3019                                 "plain");
3020                 git_header_html(undef, $expires);
3021                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3022                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3023                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3024                 } else {
3025                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3026                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3027                 }
3028                 if (defined $file_name) {
3029                         git_print_page_path($file_name, "blob", $hash_base);
3030                 } else {
3031                         print "<div class=\"page_path\"></div>\n";
3032                 }
3033
3034         } elsif ($format eq 'plain') {
3035                 print $cgi->header(
3036                         -type => 'text/plain',
3037                         -charset => 'utf-8',
3038                         -expires => $expires,
3039                         -content_disposition => qq(inline; filename="${file_name}.patch"));
3040
3041                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3042
3043         } else {
3044                 die_error(undef, "Unknown blobdiff format");
3045         }
3046
3047         # patch
3048         if ($format eq 'html') {
3049                 print "<div class=\"page_body\">\n";
3050
3051                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3052                 close $fd;
3053
3054                 print "</div>\n"; # class="page_body"
3055                 git_footer_html();
3056
3057         } else {
3058                 while (my $line = <$fd>) {
3059                         $line =~ s!a/($hash|$hash_parent)!a/$diffinfo{'from_file'}!g;
3060                         $line =~ s!b/($hash|$hash_parent)!b/$diffinfo{'to_file'}!g;
3061
3062                         print $line;
3063
3064                         last if $line =~ m!^\+\+\+!;
3065                 }
3066                 local $/ = undef;
3067                 print <$fd>;
3068                 close $fd;
3069         }
3070 }
3071
3072 sub git_blobdiff_plain {
3073         git_blobdiff('plain');
3074 }
3075
3076 sub git_commitdiff {
3077         my $format = shift || 'html';
3078         my %co = parse_commit($hash);
3079         if (!%co) {
3080                 die_error(undef, "Unknown commit object");
3081         }
3082         if (!defined $hash_parent) {
3083                 $hash_parent = $co{'parent'} || '--root';
3084         }
3085
3086         # read commitdiff
3087         my $fd;
3088         my @difftree;
3089         if ($format eq 'html') {
3090                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3091                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3092                         or die_error(undef, "Open git-diff-tree failed");
3093
3094                 while (chomp(my $line = <$fd>)) {
3095                         # empty line ends raw part of diff-tree output
3096                         last unless $line;
3097                         push @difftree, $line;
3098                 }
3099
3100         } elsif ($format eq 'plain') {
3101                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3102                         '-p', $hash_parent, $hash
3103                         or die_error(undef, "Open git-diff-tree failed");
3104
3105         } else {
3106                 die_error(undef, "Unknown commitdiff format");
3107         }
3108
3109         # non-textual hash id's can be cached
3110         my $expires;
3111         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3112                 $expires = "+1d";
3113         }
3114
3115         # write commit message
3116         if ($format eq 'html') {
3117                 my $refs = git_get_references();
3118                 my $ref = format_ref_marker($refs, $co{'id'});
3119                 my $formats_nav =
3120                         $cgi->a({-href => href(action=>"commitdiff_plain",
3121                                                hash=>$hash, hash_parent=>$hash_parent)},
3122                                 "plain");
3123
3124                 git_header_html(undef, $expires);
3125                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3126                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3127                 git_print_authorship(\%co);
3128                 print "<div class=\"page_body\">\n";
3129                 print "<div class=\"log\">\n";
3130                 git_print_simplified_log($co{'comment'}, 1); # skip title
3131                 print "</div>\n"; # class="log"
3132
3133         } elsif ($format eq 'plain') {
3134                 my $refs = git_get_references("tags");
3135                 my $tagname = git_get_rev_name_tags($hash);
3136                 my $filename = basename($project) . "-$hash.patch";
3137
3138                 print $cgi->header(
3139                         -type => 'text/plain',
3140                         -charset => 'utf-8',
3141                         -expires => $expires,
3142                         -content_disposition => qq(inline; filename="$filename"));
3143                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3144                 print <<TEXT;
3145 From: $co{'author'}
3146 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3147 Subject: $co{'title'}
3148 TEXT
3149                 print "X-Git-Tag: $tagname\n" if $tagname;
3150                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3151
3152                 foreach my $line (@{$co{'comment'}}) {
3153                         print "$line\n";
3154                 }
3155                 print "---\n\n";
3156         }
3157
3158         # write patch
3159         if ($format eq 'html') {
3160                 git_difftree_body(\@difftree, $hash, $hash_parent);
3161                 print "<br/>\n";
3162
3163                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3164                 close $fd;
3165                 print "</div>\n"; # class="page_body"
3166                 git_footer_html();
3167
3168         } elsif ($format eq 'plain') {
3169                 local $/ = undef;
3170                 print <$fd>;
3171                 close $fd
3172                         or print "Reading git-diff-tree failed\n";
3173         }
3174 }
3175
3176 sub git_commitdiff_plain {
3177         git_commitdiff('plain');
3178 }
3179
3180 sub git_history {
3181         if (!defined $hash_base) {
3182                 $hash_base = git_get_head_hash($project);
3183         }
3184         if (!defined $page) {
3185                 $page = 0;
3186         }
3187         my $ftype;
3188         my %co = parse_commit($hash_base);
3189         if (!%co) {
3190                 die_error(undef, "Unknown commit object");
3191         }
3192
3193         my $refs = git_get_references();
3194         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3195
3196         if (!defined $hash && defined $file_name) {
3197                 $hash = git_get_hash_by_path($hash_base, $file_name);
3198         }
3199         if (defined $hash) {
3200                 $ftype = git_get_type($hash);
3201         }
3202
3203         open my $fd, "-|",
3204                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3205                         or die_error(undef, "Open git-rev-list-failed");
3206         my @revlist = map { chomp; $_ } <$fd>;
3207         close $fd
3208                 or die_error(undef, "Reading git-rev-list failed");
3209
3210         my $paging_nav = '';
3211         if ($page > 0) {
3212                 $paging_nav .=
3213                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3214                                                file_name=>$file_name)},
3215                                 "first");
3216                 $paging_nav .= " &sdot; " .
3217                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3218                                                file_name=>$file_name, page=>$page-1),
3219                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3220         } else {
3221                 $paging_nav .= "first";
3222                 $paging_nav .= " &sdot; prev";
3223         }
3224         if ($#revlist >= (100 * ($page+1)-1)) {
3225                 $paging_nav .= " &sdot; " .
3226                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3227                                                file_name=>$file_name, page=>$page+1),
3228                                  -accesskey => "n", -title => "Alt-n"}, "next");
3229         } else {
3230                 $paging_nav .= " &sdot; next";
3231         }
3232         my $next_link = '';
3233         if ($#revlist >= (100 * ($page+1)-1)) {
3234                 $next_link =
3235                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3236                                                file_name=>$file_name, page=>$page+1),
3237                                  -title => "Alt-n"}, "next");
3238         }
3239
3240         git_header_html();
3241         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3242         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3243         git_print_page_path($file_name, $ftype, $hash_base);
3244
3245         git_history_body(\@revlist, ($page * 100), $#revlist,
3246                          $refs, $hash_base, $ftype, $next_link);
3247
3248         git_footer_html();
3249 }
3250
3251 sub git_search {
3252         if (!defined $searchtext) {
3253                 die_error(undef, "Text field empty");
3254         }
3255         if (!defined $hash) {
3256                 $hash = git_get_head_hash($project);
3257         }
3258         my %co = parse_commit($hash);
3259         if (!%co) {
3260                 die_error(undef, "Unknown commit object");
3261         }
3262
3263         my $commit_search = 1;
3264         my $author_search = 0;
3265         my $committer_search = 0;
3266         my $pickaxe_search = 0;
3267         if ($searchtext =~ s/^author\\://i) {
3268                 $author_search = 1;
3269         } elsif ($searchtext =~ s/^committer\\://i) {
3270                 $committer_search = 1;
3271         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3272                 $commit_search = 0;
3273                 $pickaxe_search = 1;
3274
3275                 # pickaxe may take all resources of your box and run for several minutes
3276                 # with every query - so decide by yourself how public you make this feature
3277                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3278                 if (!$have_pickaxe) {
3279                         die_error('403 Permission denied', "Permission denied");
3280                 }
3281         }
3282         git_header_html();
3283         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3284         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3285
3286         print "<table cellspacing=\"0\">\n";
3287         my $alternate = 0;
3288         if ($commit_search) {
3289                 $/ = "\0";
3290                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3291                 while (my $commit_text = <$fd>) {
3292                         if (!grep m/$searchtext/i, $commit_text) {
3293                                 next;
3294                         }
3295                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3296                                 next;
3297                         }
3298                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3299                                 next;
3300                         }
3301                         my @commit_lines = split "\n", $commit_text;
3302                         my %co = parse_commit(undef, \@commit_lines);
3303                         if (!%co) {
3304                                 next;
3305                         }
3306                         if ($alternate) {
3307                                 print "<tr class=\"dark\">\n";
3308                         } else {
3309                                 print "<tr class=\"light\">\n";
3310                         }
3311                         $alternate ^= 1;
3312                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3313                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3314                               "<td>" .
3315                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3316                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3317                         my $comment = $co{'comment'};
3318                         foreach my $line (@$comment) {
3319                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3320                                         my $lead = esc_html($1) || "";
3321                                         $lead = chop_str($lead, 30, 10);
3322                                         my $match = esc_html($2) || "";
3323                                         my $trail = esc_html($3) || "";
3324                                         $trail = chop_str($trail, 30, 10);
3325                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3326                                         print chop_str($text, 80, 5) . "<br/>\n";
3327                                 }
3328                         }
3329                         print "</td>\n" .
3330                               "<td class=\"link\">" .
3331                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3332                               " | " .
3333                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3334                         print "</td>\n" .
3335                               "</tr>\n";
3336                 }
3337                 close $fd;
3338         }
3339
3340         if ($pickaxe_search) {
3341                 $/ = "\n";
3342                 my $git_command = git_cmd_str();
3343                 open my $fd, "-|", "$git_command rev-list $hash | " .
3344                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3345                 undef %co;
3346                 my @files;
3347                 while (my $line = <$fd>) {
3348                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3349                                 my %set;
3350                                 $set{'file'} = $6;
3351                                 $set{'from_id'} = $3;
3352                                 $set{'to_id'} = $4;
3353                                 $set{'id'} = $set{'to_id'};
3354                                 if ($set{'id'} =~ m/0{40}/) {
3355                                         $set{'id'} = $set{'from_id'};
3356                                 }
3357                                 if ($set{'id'} =~ m/0{40}/) {
3358                                         next;
3359                                 }
3360                                 push @files, \%set;
3361                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3362                                 if (%co) {
3363                                         if ($alternate) {
3364                                                 print "<tr class=\"dark\">\n";
3365                                         } else {
3366                                                 print "<tr class=\"light\">\n";
3367                                         }
3368                                         $alternate ^= 1;
3369                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3370                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3371                                               "<td>" .
3372                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3373                                                       -class => "list subject"},
3374                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3375                                         while (my $setref = shift @files) {
3376                                                 my %set = %$setref;
3377                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3378                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3379                                                               -class => "list"},
3380                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3381                                                       "<br/>\n";
3382                                         }
3383                                         print "</td>\n" .
3384                                               "<td class=\"link\">" .
3385                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3386                                               " | " .
3387                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3388                                         print "</td>\n" .
3389                                               "</tr>\n";
3390                                 }
3391                                 %co = parse_commit($1);
3392                         }
3393                 }
3394                 close $fd;
3395         }
3396         print "</table>\n";
3397         git_footer_html();
3398 }
3399
3400 sub git_shortlog {
3401         my $head = git_get_head_hash($project);
3402         if (!defined $hash) {
3403                 $hash = $head;
3404         }
3405         if (!defined $page) {
3406                 $page = 0;
3407         }
3408         my $refs = git_get_references();
3409
3410         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3411         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3412                 or die_error(undef, "Open git-rev-list failed");
3413         my @revlist = map { chomp; $_ } <$fd>;
3414         close $fd;
3415
3416         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3417         my $next_link = '';
3418         if ($#revlist >= (100 * ($page+1)-1)) {
3419                 $next_link =
3420                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3421                                  -title => "Alt-n"}, "next");
3422         }
3423
3424
3425         git_header_html();
3426         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3427         git_print_header_div('summary', $project);
3428
3429         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3430
3431         git_footer_html();
3432 }
3433
3434 ## ......................................................................
3435 ## feeds (RSS, OPML)
3436
3437 sub git_rss {
3438         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3439         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3440                 or die_error(undef, "Open git-rev-list failed");
3441         my @revlist = map { chomp; $_ } <$fd>;
3442         close $fd or die_error(undef, "Reading git-rev-list failed");
3443         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3444         print <<XML;
3445 <?xml version="1.0" encoding="utf-8"?>
3446 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3447 <channel>
3448 <title>$project $my_uri $my_url</title>
3449 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3450 <description>$project log</description>
3451 <language>en</language>
3452 XML
3453
3454         for (my $i = 0; $i <= $#revlist; $i++) {
3455                 my $commit = $revlist[$i];
3456                 my %co = parse_commit($commit);
3457                 # we read 150, we always show 30 and the ones more recent than 48 hours
3458                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3459                         last;
3460                 }
3461                 my %cd = parse_date($co{'committer_epoch'});
3462                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3463                         $co{'parent'}, $co{'id'}
3464                         or next;
3465                 my @difftree = map { chomp; $_ } <$fd>;
3466                 close $fd
3467                         or next;
3468                 print "<item>\n" .
3469                       "<title>" .
3470                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3471                       "</title>\n" .
3472                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3473                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3474                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3475                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3476                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3477                       "<content:encoded>" .
3478                       "<![CDATA[\n";
3479                 my $comment = $co{'comment'};
3480                 foreach my $line (@$comment) {
3481                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3482                         print "$line<br/>\n";
3483                 }
3484                 print "<br/>\n";
3485                 foreach my $line (@difftree) {
3486                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3487                                 next;
3488                         }
3489                         my $file = validate_input(unquote($7));
3490                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3491                         print "$file<br/>\n";
3492                 }
3493                 print "]]>\n" .
3494                       "</content:encoded>\n" .
3495                       "</item>\n";
3496         }
3497         print "</channel></rss>";
3498 }
3499
3500 sub git_opml {
3501         my @list = git_get_projects_list();
3502
3503         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3504         print <<XML;
3505 <?xml version="1.0" encoding="utf-8"?>
3506 <opml version="1.0">
3507 <head>
3508   <title>$site_name Git OPML Export</title>
3509 </head>
3510 <body>
3511 <outline text="git RSS feeds">
3512 XML
3513
3514         foreach my $pr (@list) {
3515                 my %proj = %$pr;
3516                 my $head = git_get_head_hash($proj{'path'});
3517                 if (!defined $head) {
3518                         next;
3519                 }
3520                 $git_dir = "$projectroot/$proj{'path'}";
3521                 my %co = parse_commit($head);
3522                 if (!%co) {
3523                         next;
3524                 }
3525
3526                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3527                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3528                 my $html = "$my_url?p=$proj{'path'};a=summary";
3529                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3530         }
3531         print <<XML;
3532 </outline>
3533 </body>
3534 </opml>
3535 XML
3536 }