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