git.oblomov.eu Git - git/blob - 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 # location for temporary files needed for diffs
  35 our $git_temp = "/tmp/gitweb";
  36
  37 # target of the home link on top of all pages
  38 our $home_link = $my_uri || "/";
  39
  40 # string of the home link on top of all pages
  41 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  42
  43 # name of your site or organization to appear in page titles
  44 # replace this with something more descriptive for clearer bookmarks
  45 our $site_name = "++GITWEB_SITENAME++" || $ENV{'SERVER_NAME'} || "Untitled";
  46
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49
  50 # URI of default stylesheet
  51 our $stylesheet = "++GITWEB_CSS++";
  52 # URI of GIT logo
  53 our $logo = "++GITWEB_LOGO++";
  54
  55 # source of projects list
  56 our $projects_list = "++GITWEB_LIST++";
  57
  58 # list of git base URLs used for URL to where fetch project from,
  59 # i.e. full URL is "$git_base_url/$project"
  60 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  61
  62 # default blob_plain mimetype and default charset for text/plain blob
  63 our $default_blob_plain_mimetype = 'text/plain';
  64 our $default_text_plain_charset  = undef;
  65
  66 # file to use for guessing MIME types before trying /etc/mime.types
  67 # (relative to the current git repository)
  68 our $mimetypes_file = undef;
  69
  70 # You define site-wide feature defaults here; override them with
  71 # $GITWEB_CONFIG as necessary.
  72 our %feature = (
  73         # feature => {'sub' => feature-sub, 'override' => allow-override, 'default' => [ default options...]
  74         # if feature is overridable, feature-sub will be called with default options;
  75         # return value indicates if to enable specified feature
  76
  77         'blame' => {
  78                 'sub' => \&feature_blame,
  79                 'override' => 0,
  80                 'default' => [0]},
  81
  82         'snapshot' => {
  83                 'sub' => \&feature_snapshot,
  84                 'override' => 0,
  85                 #         => [content-encoding, suffix, program]
  86                 'default' => ['x-gzip', 'gz', 'gzip']},
  87 );
  88
  89 sub gitweb_check_feature {
  90         my ($name) = @_;
  91         return undef unless exists $feature{$name};
  92         my ($sub, $override, @defaults) = (
  93                 $feature{$name}{'sub'},
  94                 $feature{$name}{'override'},
  95                 @{$feature{$name}{'default'}});
  96         if (!$override) { return @defaults; }
  97         return $sub->(@defaults);
  98 }
  99
 100 # To enable system wide have in $GITWEB_CONFIG
 101 # $feature{'blame'}{'default'} =  [1];
 102 # To have project specific config enable override in  $GITWEB_CONFIG
 103 # $feature{'blame'}{'override'} =  1;
 104 # and in project config gitweb.blame = 0|1;
 105
 106 sub feature_blame {
 107         my ($val) = git_get_project_config('blame', '--bool');
 108
 109         if ($val eq 'true') {
 110                 return 1;
 111         } elsif ($val eq 'false') {
 112                 return 0;
 113         }
 114
 115         return $_[0];
 116 }
 117
 118 # To disable system wide have in $GITWEB_CONFIG
 119 # $feature{'snapshot'}{'default'} =  [undef];
 120 # To have project specific config enable override in  $GITWEB_CONFIG
 121 # $feature{'blame'}{'override'} =  1;
 122 # and in project config  gitweb.snapshot = none|gzip|bzip2
 123
 124 sub feature_snapshot {
 125         my ($ctype, $suffix, $command) = @_;
 126
 127         my ($val) = git_get_project_config('snapshot');
 128
 129         if ($val eq 'gzip') {
 130                 return ('x-gzip', 'gz', 'gzip');
 131         } elsif ($val eq 'bzip2') {
 132                 return ('x-bzip2', 'bz2', 'bzip2');
 133         } elsif ($val eq 'none') {
 134                 return ();
 135         }
 136
 137         return ($ctype, $suffix, $command);
 138 }
 139
 140 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 141 require $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 142
 143 # version of the core git binary
 144 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 145
 146 $projects_list ||= $projectroot;
 147 if (! -d $git_temp) {
 148         mkdir($git_temp, 0700) || die_error(undef, "Couldn't mkdir $git_temp");
 149 }
 150
 151 # ======================================================================
 152 # input validation and dispatch
 153 our $action = $cgi->param('a');
 154 if (defined $action) {
 155         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 156                 die_error(undef, "Invalid action parameter");
 157         }
 158 }
 159
 160 our $project = ($cgi->param('p') || $ENV{'PATH_INFO'});
 161 if (defined $project) {
 162         $project =~ s|^/||;
 163         $project =~ s|/$||;
 164         $project = undef unless $project;
 165 }
 166 if (defined $project) {
 167         if (!validate_input($project)) {
 168                 die_error(undef, "Invalid project parameter");
 169         }
 170         if (!(-d "$projectroot/$project")) {
 171                 die_error(undef, "No such directory");
 172         }
 173         if (!(-e "$projectroot/$project/HEAD")) {
 174                 die_error(undef, "No such project");
 175         }
 176         $ENV{'GIT_DIR'} = "$projectroot/$project";
 177 }
 178
 179 our $file_name = $cgi->param('f');
 180 if (defined $file_name) {
 181         if (!validate_input($file_name)) {
 182                 die_error(undef, "Invalid file parameter");
 183         }
 184 }
 185
 186 our $file_parent = $cgi->param('fp');
 187 if (defined $file_parent) {
 188         if (!validate_input($file_parent)) {
 189                 die_error(undef, "Invalid file parent parameter");
 190         }
 191 }
 192
 193 our $hash = $cgi->param('h');
 194 if (defined $hash) {
 195         if (!validate_input($hash)) {
 196                 die_error(undef, "Invalid hash parameter");
 197         }
 198 }
 199
 200 our $hash_parent = $cgi->param('hp');
 201 if (defined $hash_parent) {
 202         if (!validate_input($hash_parent)) {
 203                 die_error(undef, "Invalid hash parent parameter");
 204         }
 205 }
 206
 207 our $hash_base = $cgi->param('hb');
 208 if (defined $hash_base) {
 209         if (!validate_input($hash_base)) {
 210                 die_error(undef, "Invalid hash base parameter");
 211         }
 212 }
 213
 214 our $page = $cgi->param('pg');
 215 if (defined $page) {
 216         if ($page =~ m/[^0-9]$/) {
 217                 die_error(undef, "Invalid page parameter");
 218         }
 219 }
 220
 221 our $searchtext = $cgi->param('s');
 222 if (defined $searchtext) {
 223         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 224                 die_error(undef, "Invalid search parameter");
 225         }
 226         $searchtext = quotemeta $searchtext;
 227 }
 228
 229 # dispatch
 230 my %actions = (
 231         "blame" => \&git_blame2,
 232         "blobdiff" => \&git_blobdiff,
 233         "blobdiff_plain" => \&git_blobdiff_plain,
 234         "blob" => \&git_blob,
 235         "blob_plain" => \&git_blob_plain,
 236         "commitdiff" => \&git_commitdiff,
 237         "commitdiff_plain" => \&git_commitdiff_plain,
 238         "commit" => \&git_commit,
 239         "heads" => \&git_heads,
 240         "history" => \&git_history,
 241         "log" => \&git_log,
 242         "rss" => \&git_rss,
 243         "search" => \&git_search,
 244         "shortlog" => \&git_shortlog,
 245         "summary" => \&git_summary,
 246         "tag" => \&git_tag,
 247         "tags" => \&git_tags,
 248         "tree" => \&git_tree,
 249         "snapshot" => \&git_snapshot,
 250         # those below don't need $project
 251         "opml" => \&git_opml,
 252         "project_list" => \&git_project_list,
 253 );
 254
 255 if (defined $project) {
 256         $action ||= 'summary';
 257 } else {
 258         $action ||= 'project_list';
 259 }
 260 if (!defined($actions{$action})) {
 261         die_error(undef, "Unknown action");
 262 }
 263 $actions{$action}->();
 264 exit;
 265
 266 ## ======================================================================
 267 ## action links
 268
 269 sub href(%) {
 270         my %params = @_;
 271
 272         my @mapping = (
 273                 action => "a",
 274                 project => "p",
 275                 file_name => "f",
 276                 file_parent => "fp",
 277                 hash => "h",
 278                 hash_parent => "hp",
 279                 hash_base => "hb",
 280                 page => "pg",
 281                 searchtext => "s",
 282         );
 283         my %mapping = @mapping;
 284
 285         $params{"project"} ||= $project;
 286
 287         my @result = ();
 288         for (my $i = 0; $i < @mapping; $i += 2) {
 289                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 290                 if (defined $params{$name}) {
 291                         push @result, $symbol . "=" . esc_param($params{$name});
 292                 }
 293         }
 294         return "$my_uri?" . join(';', @result);
 295 }
 296
 297
 298 ## ======================================================================
 299 ## validation, quoting/unquoting and escaping
 300
 301 sub validate_input {
 302         my $input = shift;
 303
 304         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 305                 return $input;
 306         }
 307         if ($input =~ m/(^|\/)(|\.|\.\.)($|\/)/) {
 308                 return undef;
 309         }
 310         if ($input =~ m/[^a-zA-Z0-9_\x80-\xff\ \t\.\/\-\+\#\~\%]/) {
 311                 return undef;
 312         }
 313         return $input;
 314 }
 315
 316 # quote unsafe chars, but keep the slash, even when it's not
 317 # correct, but quoted slashes look too horrible in bookmarks
 318 sub esc_param {
 319         my $str = shift;
 320         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 321         $str =~ s/\+/%2B/g;
 322         $str =~ s/ /\+/g;
 323         return $str;
 324 }
 325
 326 # replace invalid utf8 character with SUBSTITUTION sequence
 327 sub esc_html {
 328         my $str = shift;
 329         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 330         $str = escapeHTML($str);
 331         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 332         return $str;
 333 }
 334
 335 # git may return quoted and escaped filenames
 336 sub unquote {
 337         my $str = shift;
 338         if ($str =~ m/^"(.*)"$/) {
 339                 $str = $1;
 340                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 341         }
 342         return $str;
 343 }
 344
 345 # escape tabs (convert tabs to spaces)
 346 sub untabify {
 347         my $line = shift;
 348
 349         while ((my $pos = index($line, "\t")) != -1) {
 350                 if (my $count = (8 - ($pos % 8))) {
 351                         my $spaces = ' ' x $count;
 352                         $line =~ s/\t/$spaces/;
 353                 }
 354         }
 355
 356         return $line;
 357 }
 358
 359 ## ----------------------------------------------------------------------
 360 ## HTML aware string manipulation
 361
 362 sub chop_str {
 363         my $str = shift;
 364         my $len = shift;
 365         my $add_len = shift || 10;
 366
 367         # allow only $len chars, but don't cut a word if it would fit in $add_len
 368         # if it doesn't fit, cut it if it's still longer than the dots we would add
 369         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 370         my $body = $1;
 371         my $tail = $2;
 372         if (length($tail) > 4) {
 373                 $tail = " ...";
 374                 $body =~ s/&[^;]*$//; # remove chopped character entities
 375         }
 376         return "$body$tail";
 377 }
 378
 379 ## ----------------------------------------------------------------------
 380 ## functions returning short strings
 381
 382 # CSS class for given age value (in seconds)
 383 sub age_class {
 384         my $age = shift;
 385
 386         if ($age < 60*60*2) {
 387                 return "age0";
 388         } elsif ($age < 60*60*24*2) {
 389                 return "age1";
 390         } else {
 391                 return "age2";
 392         }
 393 }
 394
 395 # convert age in seconds to "nn units ago" string
 396 sub age_string {
 397         my $age = shift;
 398         my $age_str;
 399
 400         if ($age > 60*60*24*365*2) {
 401                 $age_str = (int $age/60/60/24/365);
 402                 $age_str .= " years ago";
 403         } elsif ($age > 60*60*24*(365/12)*2) {
 404                 $age_str = int $age/60/60/24/(365/12);
 405                 $age_str .= " months ago";
 406         } elsif ($age > 60*60*24*7*2) {
 407                 $age_str = int $age/60/60/24/7;
 408                 $age_str .= " weeks ago";
 409         } elsif ($age > 60*60*24*2) {
 410                 $age_str = int $age/60/60/24;
 411                 $age_str .= " days ago";
 412         } elsif ($age > 60*60*2) {
 413                 $age_str = int $age/60/60;
 414                 $age_str .= " hours ago";
 415         } elsif ($age > 60*2) {
 416                 $age_str = int $age/60;
 417                 $age_str .= " min ago";
 418         } elsif ($age > 2) {
 419                 $age_str = int $age;
 420                 $age_str .= " sec ago";
 421         } else {
 422                 $age_str .= " right now";
 423         }
 424         return $age_str;
 425 }
 426
 427 # convert file mode in octal to symbolic file mode string
 428 sub mode_str {
 429         my $mode = oct shift;
 430
 431         if (S_ISDIR($mode & S_IFMT)) {
 432                 return 'drwxr-xr-x';
 433         } elsif (S_ISLNK($mode)) {
 434                 return 'lrwxrwxrwx';
 435         } elsif (S_ISREG($mode)) {
 436                 # git cares only about the executable bit
 437                 if ($mode & S_IXUSR) {
 438                         return '-rwxr-xr-x';
 439                 } else {
 440                         return '-rw-r--r--';
 441                 };
 442         } else {
 443                 return '----------';
 444         }
 445 }
 446
 447 # convert file mode in octal to file type string
 448 sub file_type {
 449         my $mode = oct shift;
 450
 451         if (S_ISDIR($mode & S_IFMT)) {
 452                 return "directory";
 453         } elsif (S_ISLNK($mode)) {
 454                 return "symlink";
 455         } elsif (S_ISREG($mode)) {
 456                 return "file";
 457         } else {
 458                 return "unknown";
 459         }
 460 }
 461
 462 ## ----------------------------------------------------------------------
 463 ## functions returning short HTML fragments, or transforming HTML fragments
 464 ## which don't beling to other sections
 465
 466 # format line of commit message or tag comment
 467 sub format_log_line_html {
 468         my $line = shift;
 469
 470         $line = esc_html($line);
 471         $line =~ s/ /&nbsp;/g;
 472         if ($line =~ m/([0-9a-fA-F]{40})/) {
 473                 my $hash_text = $1;
 474                 if (git_get_type($hash_text) eq "commit") {
 475                         my $link =
 476                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 477                                         -class => "text"}, $hash_text);
 478                         $line =~ s/$hash_text/$link/;
 479                 }
 480         }
 481         return $line;
 482 }
 483
 484 # format marker of refs pointing to given object
 485 sub format_ref_marker {
 486         my ($refs, $id) = @_;
 487         my $markers = '';
 488
 489         if (defined $refs->{$id}) {
 490                 foreach my $ref (@{$refs->{$id}}) {
 491                         my ($type, $name) = qw();
 492                         # e.g. tags/v2.6.11 or heads/next
 493                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 494                                 $type = $1;
 495                                 $name = $2;
 496                         } else {
 497                                 $type = "ref";
 498                                 $name = $ref;
 499                         }
 500
 501                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 502                 }
 503         }
 504
 505         if ($markers) {
 506                 return ' <span class="refs">'. $markers . '</span>';
 507         } else {
 508                 return "";
 509         }
 510 }
 511
 512 # format, perhaps shortened and with markers, title line
 513 sub format_subject_html {
 514         my ($long, $short, $href, $extra) = @_;
 515         $extra = '' unless defined($extra);
 516
 517         if (length($short) < length($long)) {
 518                 return $cgi->a({-href => $href, -class => "list subject",
 519                                 -title => $long},
 520                        esc_html($short) . $extra);
 521         } else {
 522                 return $cgi->a({-href => $href, -class => "list subject"},
 523                        esc_html($long)  . $extra);
 524         }
 525 }
 526
 527 sub format_diff_line {
 528         my $line = shift;
 529         my $char = substr($line, 0, 1);
 530         my $diff_class = "";
 531
 532         chomp $line;
 533
 534         if ($char eq '+') {
 535                 $diff_class = " add";
 536         } elsif ($char eq "-") {
 537                 $diff_class = " rem";
 538         } elsif ($char eq "@") {
 539                 $diff_class = " chunk_header";
 540         } elsif ($char eq "\\") {
 541                 $diff_class = " incomplete";
 542         }
 543         $line = untabify($line);
 544         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 545 }
 546
 547 ## ----------------------------------------------------------------------
 548 ## git utility subroutines, invoking git commands
 549
 550 # get HEAD ref of given project as hash
 551 sub git_get_head_hash {
 552         my $project = shift;
 553         my $oENV = $ENV{'GIT_DIR'};
 554         my $retval = undef;
 555         $ENV{'GIT_DIR'} = "$projectroot/$project";
 556         if (open my $fd, "-|", $GIT, "rev-parse", "--verify", "HEAD") {
 557                 my $head = <$fd>;
 558                 close $fd;
 559                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 560                         $retval = $1;
 561                 }
 562         }
 563         if (defined $oENV) {
 564                 $ENV{'GIT_DIR'} = $oENV;
 565         }
 566         return $retval;
 567 }
 568
 569 # get type of given object
 570 sub git_get_type {
 571         my $hash = shift;
 572
 573         open my $fd, "-|", $GIT, "cat-file", '-t', $hash or return;
 574         my $type = <$fd>;
 575         close $fd or return;
 576         chomp $type;
 577         return $type;
 578 }
 579
 580 sub git_get_project_config {
 581         my ($key, $type) = @_;
 582
 583         return unless ($key);
 584         $key =~ s/^gitweb\.//;
 585         return if ($key =~ m/\W/);
 586
 587         my @x = ($GIT, 'repo-config');
 588         if (defined $type) { push @x, $type; }
 589         push @x, "--get";
 590         push @x, "gitweb.$key";
 591         my $val = qx(@x);
 592         chomp $val;
 593         return ($val);
 594 }
 595
 596 # get hash of given path at given ref
 597 sub git_get_hash_by_path {
 598         my $base = shift;
 599         my $path = shift || return undef;
 600
 601         my $tree = $base;
 602
 603         open my $fd, "-|", $GIT, "ls-tree", $base, "--", $path
 604                 or die_error(undef, "Open git-ls-tree failed");
 605         my $line = <$fd>;
 606         close $fd or return undef;
 607
 608         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 609         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 610         return $3;
 611 }
 612
 613 ## ......................................................................
 614 ## git utility functions, directly accessing git repository
 615
 616 # assumes that PATH is not symref
 617 sub git_get_hash_by_ref {
 618         my $path = shift;
 619
 620         open my $fd, "$projectroot/$path" or return undef;
 621         my $head = <$fd>;
 622         close $fd;
 623         chomp $head;
 624         if ($head =~ m/^[0-9a-fA-F]{40}$/) {
 625                 return $head;
 626         }
 627 }
 628
 629 sub git_get_project_description {
 630         my $path = shift;
 631
 632         open my $fd, "$projectroot/$path/description" or return undef;
 633         my $descr = <$fd>;
 634         close $fd;
 635         chomp $descr;
 636         return $descr;
 637 }
 638
 639 sub git_get_project_url_list {
 640         my $path = shift;
 641
 642         open my $fd, "$projectroot/$path/cloneurl" or return undef;
 643         my @git_project_url_list = map { chomp; $_ } <$fd>;
 644         close $fd;
 645
 646         return wantarray ? @git_project_url_list : \@git_project_url_list;
 647 }
 648
 649 sub git_get_projects_list {
 650         my @list;
 651
 652         if (-d $projects_list) {
 653                 # search in directory
 654                 my $dir = $projects_list;
 655                 opendir my ($dh), $dir or return undef;
 656                 while (my $dir = readdir($dh)) {
 657                         if (-e "$projectroot/$dir/HEAD") {
 658                                 my $pr = {
 659                                         path => $dir,
 660                                 };
 661                                 push @list, $pr
 662                         }
 663                 }
 664                 closedir($dh);
 665         } elsif (-f $projects_list) {
 666                 # read from file(url-encoded):
 667                 # 'git%2Fgit.git Linus+Torvalds'
 668                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 669                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 670                 open my ($fd), $projects_list or return undef;
 671                 while (my $line = <$fd>) {
 672                         chomp $line;
 673                         my ($path, $owner) = split ' ', $line;
 674                         $path = unescape($path);
 675                         $owner = unescape($owner);
 676                         if (!defined $path) {
 677                                 next;
 678                         }
 679                         if (-e "$projectroot/$path/HEAD") {
 680                                 my $pr = {
 681                                         path => $path,
 682                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 683                                 };
 684                                 push @list, $pr
 685                         }
 686                 }
 687                 close $fd;
 688         }
 689         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 690         return @list;
 691 }
 692
 693 sub git_get_project_owner {
 694         my $project = shift;
 695         my $owner;
 696
 697         return undef unless $project;
 698
 699         # read from file (url-encoded):
 700         # 'git%2Fgit.git Linus+Torvalds'
 701         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 702         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 703         if (-f $projects_list) {
 704                 open (my $fd , $projects_list);
 705                 while (my $line = <$fd>) {
 706                         chomp $line;
 707                         my ($pr, $ow) = split ' ', $line;
 708                         $pr = unescape($pr);
 709                         $ow = unescape($ow);
 710                         if ($pr eq $project) {
 711                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 712                                 last;
 713                         }
 714                 }
 715                 close $fd;
 716         }
 717         if (!defined $owner) {
 718                 $owner = get_file_owner("$projectroot/$project");
 719         }
 720
 721         return $owner;
 722 }
 723
 724 sub git_get_references {
 725         my $type = shift || "";
 726         my %refs;
 727         my $fd;
 728         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 729         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 730         if (-f "$projectroot/$project/info/refs") {
 731                 open $fd, "$projectroot/$project/info/refs"
 732                         or return;
 733         } else {
 734                 open $fd, "-|", $GIT, "ls-remote", "."
 735                         or return;
 736         }
 737
 738         while (my $line = <$fd>) {
 739                 chomp $line;
 740                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 741                         if (defined $refs{$1}) {
 742                                 push @{$refs{$1}}, $2;
 743                         } else {
 744                                 $refs{$1} = [ $2 ];
 745                         }
 746                 }
 747         }
 748         close $fd or return;
 749         return \%refs;
 750 }
 751
 752 sub git_get_following_references {
 753         my $hash = shift || return undef;
 754         my $type = shift;
 755         my $base = shift || $hash_base || "HEAD";
 756
 757         my $refs = git_get_references($type);
 758         open my $fd, "-|", $GIT, "rev-list", $base
 759                 or return undef;
 760         my @commits = map { chomp; $_ } <$fd>;
 761         close $fd
 762                 or return undef;
 763
 764         my @reflist;
 765         my $lastref;
 766
 767         foreach my $commit (@commits) {
 768                 foreach my $ref (@{$refs->{$commit}}) {
 769                         $lastref = $ref;
 770                         push @reflist, $lastref;
 771                 }
 772                 if ($commit eq $hash) {
 773                         last;
 774                 }
 775         }
 776
 777         return wantarray ? @reflist : $lastref;
 778 }
 779
 780 sub git_get_preceding_references {
 781         my $hash = shift || return undef;
 782         my $type = shift;
 783
 784         my $refs = git_get_references($type);
 785         open my $fd, "-|", $GIT, "rev-list", $hash
 786                 or return undef;
 787         my @commits = map { chomp; $_ } <$fd>;
 788         close $fd
 789                 or return undef;
 790
 791         my @reflist;
 792
 793         foreach my $commit (@commits) {
 794                 foreach my $ref (@{$refs->{$commit}}) {
 795                         return $ref unless wantarray;
 796                         push @reflist, $ref;
 797                 }
 798         }
 799
 800         return @reflist;
 801 }
 802
 803 sub git_get_rev_name_tags {
 804         my $hash = shift || return undef;
 805
 806         open my $fd, "-|", $GIT, "name-rev", "--tags", $hash
 807                 or return;
 808         my $name_rev = <$fd>;
 809         close $fd;
 810
 811         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 812                 return $1;
 813         } else {
 814                 # catches also '$hash undefined' output
 815                 return undef;
 816         }
 817 }
 818
 819 ## ----------------------------------------------------------------------
 820 ## parse to hash functions
 821
 822 sub parse_date {
 823         my $epoch = shift;
 824         my $tz = shift || "-0000";
 825
 826         my %date;
 827         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 828         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 829         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 830         $date{'hour'} = $hour;
 831         $date{'minute'} = $min;
 832         $date{'mday'} = $mday;
 833         $date{'day'} = $days[$wday];
 834         $date{'month'} = $months[$mon];
 835         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 836                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 837         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 838                              $mday, $months[$mon], $hour ,$min;
 839
 840         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 841         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 842         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 843         $date{'hour_local'} = $hour;
 844         $date{'minute_local'} = $min;
 845         $date{'tz_local'} = $tz;
 846         return %date;
 847 }
 848
 849 sub parse_tag {
 850         my $tag_id = shift;
 851         my %tag;
 852         my @comment;
 853
 854         open my $fd, "-|", $GIT, "cat-file", "tag", $tag_id or return;
 855         $tag{'id'} = $tag_id;
 856         while (my $line = <$fd>) {
 857                 chomp $line;
 858                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 859                         $tag{'object'} = $1;
 860                 } elsif ($line =~ m/^type (.+)$/) {
 861                         $tag{'type'} = $1;
 862                 } elsif ($line =~ m/^tag (.+)$/) {
 863                         $tag{'name'} = $1;
 864                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 865                         $tag{'author'} = $1;
 866                         $tag{'epoch'} = $2;
 867                         $tag{'tz'} = $3;
 868                 } elsif ($line =~ m/--BEGIN/) {
 869                         push @comment, $line;
 870                         last;
 871                 } elsif ($line eq "") {
 872                         last;
 873                 }
 874         }
 875         push @comment, <$fd>;
 876         $tag{'comment'} = \@comment;
 877         close $fd or return;
 878         if (!defined $tag{'name'}) {
 879                 return
 880         };
 881         return %tag
 882 }
 883
 884 sub parse_commit {
 885         my $commit_id = shift;
 886         my $commit_text = shift;
 887
 888         my @commit_lines;
 889         my %co;
 890
 891         if (defined $commit_text) {
 892                 @commit_lines = @$commit_text;
 893         } else {
 894                 $/ = "\0";
 895                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", "--max-count=1", $commit_id
 896                         or return;
 897                 @commit_lines = split '\n', <$fd>;
 898                 close $fd or return;
 899                 $/ = "\n";
 900                 pop @commit_lines;
 901         }
 902         my $header = shift @commit_lines;
 903         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
 904                 return;
 905         }
 906         ($co{'id'}, my @parents) = split ' ', $header;
 907         $co{'parents'} = \@parents;
 908         $co{'parent'} = $parents[0];
 909         while (my $line = shift @commit_lines) {
 910                 last if $line eq "\n";
 911                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
 912                         $co{'tree'} = $1;
 913                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
 914                         $co{'author'} = $1;
 915                         $co{'author_epoch'} = $2;
 916                         $co{'author_tz'} = $3;
 917                         if ($co{'author'} =~ m/^([^<]+) </) {
 918                                 $co{'author_name'} = $1;
 919                         } else {
 920                                 $co{'author_name'} = $co{'author'};
 921                         }
 922                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
 923                         $co{'committer'} = $1;
 924                         $co{'committer_epoch'} = $2;
 925                         $co{'committer_tz'} = $3;
 926                         $co{'committer_name'} = $co{'committer'};
 927                         $co{'committer_name'} =~ s/ <.*//;
 928                 }
 929         }
 930         if (!defined $co{'tree'}) {
 931                 return;
 932         };
 933
 934         foreach my $title (@commit_lines) {
 935                 $title =~ s/^    //;
 936                 if ($title ne "") {
 937                         $co{'title'} = chop_str($title, 80, 5);
 938                         # remove leading stuff of merges to make the interesting part visible
 939                         if (length($title) > 50) {
 940                                 $title =~ s/^Automatic //;
 941                                 $title =~ s/^merge (of|with) /Merge ... /i;
 942                                 if (length($title) > 50) {
 943                                         $title =~ s/(http|rsync):\/\///;
 944                                 }
 945                                 if (length($title) > 50) {
 946                                         $title =~ s/(master|www|rsync)\.//;
 947                                 }
 948                                 if (length($title) > 50) {
 949                                         $title =~ s/kernel.org:?//;
 950                                 }
 951                                 if (length($title) > 50) {
 952                                         $title =~ s/\/pub\/scm//;
 953                                 }
 954                         }
 955                         $co{'title_short'} = chop_str($title, 50, 5);
 956                         last;
 957                 }
 958         }
 959         # remove added spaces
 960         foreach my $line (@commit_lines) {
 961                 $line =~ s/^    //;
 962         }
 963         $co{'comment'} = \@commit_lines;
 964
 965         my $age = time - $co{'committer_epoch'};
 966         $co{'age'} = $age;
 967         $co{'age_string'} = age_string($age);
 968         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
 969         if ($age > 60*60*24*7*2) {
 970                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 971                 $co{'age_string_age'} = $co{'age_string'};
 972         } else {
 973                 $co{'age_string_date'} = $co{'age_string'};
 974                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
 975         }
 976         return %co;
 977 }
 978
 979 # parse ref from ref_file, given by ref_id, with given type
 980 sub parse_ref {
 981         my $ref_file = shift;
 982         my $ref_id = shift;
 983         my $type = shift || git_get_type($ref_id);
 984         my %ref_item;
 985
 986         $ref_item{'type'} = $type;
 987         $ref_item{'id'} = $ref_id;
 988         $ref_item{'epoch'} = 0;
 989         $ref_item{'age'} = "unknown";
 990         if ($type eq "tag") {
 991                 my %tag = parse_tag($ref_id);
 992                 $ref_item{'comment'} = $tag{'comment'};
 993                 if ($tag{'type'} eq "commit") {
 994                         my %co = parse_commit($tag{'object'});
 995                         $ref_item{'epoch'} = $co{'committer_epoch'};
 996                         $ref_item{'age'} = $co{'age_string'};
 997                 } elsif (defined($tag{'epoch'})) {
 998                         my $age = time - $tag{'epoch'};
 999                         $ref_item{'epoch'} = $tag{'epoch'};
1000                         $ref_item{'age'} = age_string($age);
1001                 }
1002                 $ref_item{'reftype'} = $tag{'type'};
1003                 $ref_item{'name'} = $tag{'name'};
1004                 $ref_item{'refid'} = $tag{'object'};
1005         } elsif ($type eq "commit"){
1006                 my %co = parse_commit($ref_id);
1007                 $ref_item{'reftype'} = "commit";
1008                 $ref_item{'name'} = $ref_file;
1009                 $ref_item{'title'} = $co{'title'};
1010                 $ref_item{'refid'} = $ref_id;
1011                 $ref_item{'epoch'} = $co{'committer_epoch'};
1012                 $ref_item{'age'} = $co{'age_string'};
1013         } else {
1014                 $ref_item{'reftype'} = $type;
1015                 $ref_item{'name'} = $ref_file;
1016                 $ref_item{'refid'} = $ref_id;
1017         }
1018
1019         return %ref_item;
1020 }
1021
1022 # parse line of git-diff-tree "raw" output
1023 sub parse_difftree_raw_line {
1024         my $line = shift;
1025         my %res;
1026
1027         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1028         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1029         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1030                 $res{'from_mode'} = $1;
1031                 $res{'to_mode'} = $2;
1032                 $res{'from_id'} = $3;
1033                 $res{'to_id'} = $4;
1034                 $res{'status'} = $5;
1035                 $res{'similarity'} = $6;
1036                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1037                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1038                 } else {
1039                         $res{'file'} = unquote($7);
1040                 }
1041         }
1042         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1043         #elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1044         #       $res{'commit'} = $1;
1045         #}
1046
1047         return wantarray ? %res : \%res;
1048 }
1049
1050 ## ......................................................................
1051 ## parse to array of hashes functions
1052
1053 sub git_get_refs_list {
1054         my $ref_dir = shift;
1055         my @reflist;
1056
1057         my @refs;
1058         my $pfxlen = length("$projectroot/$project/$ref_dir");
1059         File::Find::find(sub {
1060                 return if (/^\./);
1061                 if (-f $_) {
1062                         push @refs, substr($File::Find::name, $pfxlen + 1);
1063                 }
1064         }, "$projectroot/$project/$ref_dir");
1065
1066         foreach my $ref_file (@refs) {
1067                 my $ref_id = git_get_hash_by_ref("$project/$ref_dir/$ref_file");
1068                 my $type = git_get_type($ref_id) || next;
1069                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1070
1071                 push @reflist, \%ref_item;
1072         }
1073         # sort refs by age
1074         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1075         return \@reflist;
1076 }
1077
1078 ## ----------------------------------------------------------------------
1079 ## filesystem-related functions
1080
1081 sub get_file_owner {
1082         my $path = shift;
1083
1084         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1085         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1086         if (!defined $gcos) {
1087                 return undef;
1088         }
1089         my $owner = $gcos;
1090         $owner =~ s/[,;].*$//;
1091         return decode("utf8", $owner, Encode::FB_DEFAULT);
1092 }
1093
1094 ## ......................................................................
1095 ## mimetype related functions
1096
1097 sub mimetype_guess_file {
1098         my $filename = shift;
1099         my $mimemap = shift;
1100         -r $mimemap or return undef;
1101
1102         my %mimemap;
1103         open(MIME, $mimemap) or return undef;
1104         while (<MIME>) {
1105                 next if m/^#/; # skip comments
1106                 my ($mime, $exts) = split(/\t+/);
1107                 if (defined $exts) {
1108                         my @exts = split(/\s+/, $exts);
1109                         foreach my $ext (@exts) {
1110                                 $mimemap{$ext} = $mime;
1111                         }
1112                 }
1113         }
1114         close(MIME);
1115
1116         $filename =~ /\.(.*?)$/;
1117         return $mimemap{$1};
1118 }
1119
1120 sub mimetype_guess {
1121         my $filename = shift;
1122         my $mime;
1123         $filename =~ /\./ or return undef;
1124
1125         if ($mimetypes_file) {
1126                 my $file = $mimetypes_file;
1127                 if ($file !~ m!^/!) { # if it is relative path
1128                         # it is relative to project
1129                         $file = "$projectroot/$project/$file";
1130                 }
1131                 $mime = mimetype_guess_file($filename, $file);
1132         }
1133         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1134         return $mime;
1135 }
1136
1137 sub blob_mimetype {
1138         my $fd = shift;
1139         my $filename = shift;
1140
1141         if ($filename) {
1142                 my $mime = mimetype_guess($filename);
1143                 $mime and return $mime;
1144         }
1145
1146         # just in case
1147         return $default_blob_plain_mimetype unless $fd;
1148
1149         if (-T $fd) {
1150                 return 'text/plain' .
1151                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1152         } elsif (! $filename) {
1153                 return 'application/octet-stream';
1154         } elsif ($filename =~ m/\.png$/i) {
1155                 return 'image/png';
1156         } elsif ($filename =~ m/\.gif$/i) {
1157                 return 'image/gif';
1158         } elsif ($filename =~ m/\.jpe?g$/i) {
1159                 return 'image/jpeg';
1160         } else {
1161                 return 'application/octet-stream';
1162         }
1163 }
1164
1165 ## ======================================================================
1166 ## functions printing HTML: header, footer, error page
1167
1168 sub git_header_html {
1169         my $status = shift || "200 OK";
1170         my $expires = shift;
1171
1172         my $title = "$site_name git";
1173         if (defined $project) {
1174                 $title .= " - $project";
1175                 if (defined $action) {
1176                         $title .= "/$action";
1177                         if (defined $file_name) {
1178                                 $title .= " - $file_name";
1179                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1180                                         $title .= "/";
1181                                 }
1182                         }
1183                 }
1184         }
1185         my $content_type;
1186         # require explicit support from the UA if we are to send the page as
1187         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1188         # we have to do this because MSIE sometimes globs '*/*', pretending to
1189         # support xhtml+xml but choking when it gets what it asked for.
1190         if (defined $cgi->http('HTTP_ACCEPT') &&
1191             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1192             $cgi->Accept('application/xhtml+xml') != 0) {
1193                 $content_type = 'application/xhtml+xml';
1194         } else {
1195                 $content_type = 'text/html';
1196         }
1197         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1198                            -status=> $status, -expires => $expires);
1199         print <<EOF;
1200 <?xml version="1.0" encoding="utf-8"?>
1201 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1202 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1203 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1204 <!-- git core binaries version $git_version -->
1205 <head>
1206 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1207 <meta name="generator" content="gitweb/$version git/$git_version"/>
1208 <meta name="robots" content="index, nofollow"/>
1209 <title>$title</title>
1210 <link rel="stylesheet" type="text/css" href="$stylesheet"/>
1211 EOF
1212         if (defined $project) {
1213                 printf('<link rel="alternate" title="%s log" '.
1214                        'href="%s" type="application/rss+xml"/>'."\n",
1215                        esc_param($project), href(action=>"rss"));
1216         }
1217
1218         print "</head>\n" .
1219               "<body>\n" .
1220               "<div class=\"page_header\">\n" .
1221               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1222               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1223               "</a>\n";
1224         print $cgi->a({-href => esc_param($home_link)}, $home_link_str) . " / ";
1225         if (defined $project) {
1226                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1227                 if (defined $action) {
1228                         print " / $action";
1229                 }
1230                 print "\n";
1231                 if (!defined $searchtext) {
1232                         $searchtext = "";
1233                 }
1234                 my $search_hash;
1235                 if (defined $hash_base) {
1236                         $search_hash = $hash_base;
1237                 } elsif (defined $hash) {
1238                         $search_hash = $hash;
1239                 } else {
1240                         $search_hash = "HEAD";
1241                 }
1242                 $cgi->param("a", "search");
1243                 $cgi->param("h", $search_hash);
1244                 print $cgi->startform(-method => "get", -action => $my_uri) .
1245                       "<div class=\"search\">\n" .
1246                       $cgi->hidden(-name => "p") . "\n" .
1247                       $cgi->hidden(-name => "a") . "\n" .
1248                       $cgi->hidden(-name => "h") . "\n" .
1249                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1250                       "</div>" .
1251                       $cgi->end_form() . "\n";
1252         }
1253         print "</div>\n";
1254 }
1255
1256 sub git_footer_html {
1257         print "<div class=\"page_footer\">\n";
1258         if (defined $project) {
1259                 my $descr = git_get_project_description($project);
1260                 if (defined $descr) {
1261                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1262                 }
1263                 print $cgi->a({-href => href(action=>"rss"), -class => "rss_logo"}, "RSS") . "\n";
1264         } else {
1265                 print $cgi->a({-href => href(action=>"opml"), -class => "rss_logo"}, "OPML") . "\n";
1266         }
1267         print "</div>\n" .
1268               "</body>\n" .
1269               "</html>";
1270 }
1271
1272 sub die_error {
1273         my $status = shift || "403 Forbidden";
1274         my $error = shift || "Malformed query, file missing or permission denied";
1275
1276         git_header_html($status);
1277         print <<EOF;
1278 <div class="page_body">
1279 <br /><br />
1280 $status - $error
1281 <br />
1282 </div>
1283 EOF
1284         git_footer_html();
1285         exit;
1286 }
1287
1288 ## ----------------------------------------------------------------------
1289 ## functions printing or outputting HTML: navigation
1290
1291 sub git_print_page_nav {
1292         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1293         $extra = '' if !defined $extra; # pager or formats
1294
1295         my @navs = qw(summary shortlog log commit commitdiff tree);
1296         if ($suppress) {
1297                 @navs = grep { $_ ne $suppress } @navs;
1298         }
1299
1300         my %arg = map { $_ => {action=>$_} } @navs;
1301         if (defined $head) {
1302                 for (qw(commit commitdiff)) {
1303                         $arg{$_}{hash} = $head;
1304                 }
1305                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1306                         for (qw(shortlog log)) {
1307                                 $arg{$_}{hash} = $head;
1308                         }
1309                 }
1310         }
1311         $arg{tree}{hash} = $treehead if defined $treehead;
1312         $arg{tree}{hash_base} = $treebase if defined $treebase;
1313
1314         print "<div class=\"page_nav\">\n" .
1315                 (join " | ",
1316                  map { $_ eq $current ?
1317                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1318                  } @navs);
1319         print "<br/>\n$extra<br/>\n" .
1320               "</div>\n";
1321 }
1322
1323 sub format_paging_nav {
1324         my ($action, $hash, $head, $page, $nrevs) = @_;
1325         my $paging_nav;
1326
1327
1328         if ($hash ne $head || $page) {
1329                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1330         } else {
1331                 $paging_nav .= "HEAD";
1332         }
1333
1334         if ($page > 0) {
1335                 $paging_nav .= " &sdot; " .
1336                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1337                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1338         } else {
1339                 $paging_nav .= " &sdot; prev";
1340         }
1341
1342         if ($nrevs >= (100 * ($page+1)-1)) {
1343                 $paging_nav .= " &sdot; " .
1344                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1345                                  -accesskey => "n", -title => "Alt-n"}, "next");
1346         } else {
1347                 $paging_nav .= " &sdot; next";
1348         }
1349
1350         return $paging_nav;
1351 }
1352
1353 ## ......................................................................
1354 ## functions printing or outputting HTML: div
1355
1356 sub git_print_header_div {
1357         my ($action, $title, $hash, $hash_base) = @_;
1358         my %args = ();
1359
1360         $args{action} = $action;
1361         $args{hash} = $hash if $hash;
1362         $args{hash_base} = $hash_base if $hash_base;
1363
1364         print "<div class=\"header\">\n" .
1365               $cgi->a({-href => href(%args), -class => "title"},
1366               $title ? $title : $action) .
1367               "\n</div>\n";
1368 }
1369
1370 sub git_print_page_path {
1371         my $name = shift;
1372         my $type = shift;
1373         my $hb = shift;
1374
1375         if (!defined $name) {
1376                 print "<div class=\"page_path\">/</div>\n";
1377         } elsif (defined $type && $type eq 'blob') {
1378                 print "<div class=\"page_path\">";
1379                 if (defined $hb) {
1380                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1381                                                      hash_base=>$hb)},
1382                                       esc_html($name));
1383                 } else {
1384                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name)},
1385                                       esc_html($name));
1386                 }
1387                 print "<br/></div>\n";
1388         } else {
1389                 print "<div class=\"page_path\">" . esc_html($name) . "<br/></div>\n";
1390         }
1391 }
1392
1393 sub git_print_log {
1394         my $log = shift;
1395
1396         # remove leading empty lines
1397         while (defined $log->[0] && $log->[0] eq "") {
1398                 shift @$log;
1399         }
1400
1401         # print log
1402         my $signoff = 0;
1403         my $empty = 0;
1404         foreach my $line (@$log) {
1405                 # print only one empty line
1406                 # do not print empty line after signoff
1407                 if ($line eq "") {
1408                         next if ($empty || $signoff);
1409                         $empty = 1;
1410                 } else {
1411                         $empty = 0;
1412                 }
1413                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1414                         $signoff = 1;
1415                         print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1416                 } else {
1417                         $signoff = 0;
1418                         print format_log_line_html($line) . "<br/>\n";
1419                 }
1420         }
1421 }
1422
1423 sub git_print_simplified_log {
1424         my $log = shift;
1425         my $remove_title = shift;
1426
1427         shift @$log if $remove_title;
1428         # remove leading empty lines
1429         while (defined $log->[0] && $log->[0] eq "") {
1430                 shift @$log;
1431         }
1432
1433         # simplify and print log
1434         my $empty = 0;
1435         foreach my $line (@$log) {
1436                 # remove signoff lines
1437                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1438                         next;
1439                 }
1440                 # print only one empty line
1441                 if ($line eq "") {
1442                         next if $empty;
1443                         $empty = 1;
1444                 } else {
1445                         $empty = 0;
1446                 }
1447                 print format_log_line_html($line) . "<br/>\n";
1448         }
1449         # end with single empty line
1450         print "<br/>\n" unless $empty;
1451 }
1452
1453 ## ......................................................................
1454 ## functions printing large fragments of HTML
1455
1456 sub git_difftree_body {
1457         my ($difftree, $hash, $parent) = @_;
1458
1459         print "<div class=\"list_head\">\n";
1460         if ($#{$difftree} > 10) {
1461                 print(($#{$difftree} + 1) . " files changed:\n");
1462         }
1463         print "</div>\n";
1464
1465         print "<table class=\"diff_tree\">\n";
1466         my $alternate = 0;
1467         foreach my $line (@{$difftree}) {
1468                 my %diff = parse_difftree_raw_line($line);
1469
1470                 if ($alternate) {
1471                         print "<tr class=\"dark\">\n";
1472                 } else {
1473                         print "<tr class=\"light\">\n";
1474                 }
1475                 $alternate ^= 1;
1476
1477                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1478                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1479                 if ($diff{'to_mode'} ne ('0' x 6)) {
1480                         $to_mode_oct = oct $diff{'to_mode'};
1481                         if (S_ISREG($to_mode_oct)) { # only for regular file
1482                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1483                         }
1484                         $to_file_type = file_type($diff{'to_mode'});
1485                 }
1486                 if ($diff{'from_mode'} ne ('0' x 6)) {
1487                         $from_mode_oct = oct $diff{'from_mode'};
1488                         if (S_ISREG($to_mode_oct)) { # only for regular file
1489                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1490                         }
1491                         $from_file_type = file_type($diff{'from_mode'});
1492                 }
1493
1494                 if ($diff{'status'} eq "A") { # created
1495                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1496                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1497                         $mode_chng   .= "]</span>";
1498                         print "<td>" .
1499                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1500                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1501                                       -class => "list"}, esc_html($diff{'file'})) .
1502                               "</td>\n" .
1503                               "<td>$mode_chng</td>\n" .
1504                               "<td class=\"link\">" .
1505                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1506                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1507                                       "blob") .
1508                               "</td>\n";
1509
1510                 } elsif ($diff{'status'} eq "D") { # deleted
1511                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1512                         print "<td>" .
1513                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1514                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1515                                        -class => "list"}, esc_html($diff{'file'})) .
1516                               "</td>\n" .
1517                               "<td>$mode_chng</td>\n" .
1518                               "<td class=\"link\">" .
1519                               $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1520                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1521                                       "blob") .
1522                               " | " .
1523                               $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1524                                                      file_name=>$diff{'file'})},\
1525                                       "history") .
1526                               "</td>\n";
1527
1528                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1529                         my $mode_chnge = "";
1530                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1531                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1532                                 if ($from_file_type != $to_file_type) {
1533                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1534                                 }
1535                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1536                                         if ($from_mode_str && $to_mode_str) {
1537                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1538                                         } elsif ($to_mode_str) {
1539                                                 $mode_chnge .= " mode: $to_mode_str";
1540                                         }
1541                                 }
1542                                 $mode_chnge .= "]</span>\n";
1543                         }
1544                         print "<td>";
1545                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1546                                 print $cgi->a({-href => href(action=>"blobdiff", hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1547                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1548                                               -class => "list"}, esc_html($diff{'file'}));
1549                         } else { # only mode changed
1550                                 print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1551                                                              hash_base=>$hash, file_name=>$diff{'file'}),
1552                                               -class => "list"}, esc_html($diff{'file'}));
1553                         }
1554                         print "</td>\n" .
1555                               "<td>$mode_chnge</td>\n" .
1556                               "<td class=\"link\">" .
1557                                 $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1558                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1559                                         "blob");
1560                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1561                                 print " | " .
1562                                         $cgi->a({-href => href(action=>"blobdiff", hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1563                                                                hash_base=>$hash, file_name=>$diff{'file'})},
1564                                                 "diff");
1565                         }
1566                         print " | " .
1567                                 $cgi->a({-href => href(action=>"history",
1568                                                        hash_base=>$hash, file_name=>$diff{'file'})},
1569                                         "history");
1570                         print "</td>\n";
1571
1572                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1573                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1574                         my $nstatus = $status_name{$diff{'status'}};
1575                         my $mode_chng = "";
1576                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1577                                 # mode also for directories, so we cannot use $to_mode_str
1578                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1579                         }
1580                         print "<td>" .
1581                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1582                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1583                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1584                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1585                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1586                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1587                                       -class => "list"}, esc_html($diff{'from_file'})) .
1588                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1589                               "<td class=\"link\">" .
1590                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1591                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'})},
1592                                       "blob");
1593                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1594                                 print " | " .
1595                                         $cgi->a({-href => href(action=>"blobdiff", hash_base=>$hash,
1596                                                                hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1597                                                                file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1598                                                 "diff");
1599                         }
1600                         print "</td>\n";
1601
1602                 } # we should not encounter Unmerged (U) or Unknown (X) status
1603                 print "</tr>\n";
1604         }
1605         print "</table>\n";
1606 }
1607
1608 sub git_patchset_body {
1609         my ($fd, $difftree, $hash, $hash_parent) = @_;
1610
1611         my $patch_idx = 0;
1612         my $in_header = 0;
1613         my $patch_found = 0;
1614         my %diffinfo;
1615
1616         print "<div class=\"patchset\">\n";
1617
1618         LINE:
1619         while (my $patch_line @$fd>) {
1620                 chomp $patch_line;
1621
1622                 if ($patch_line =~ m/^diff /) { # "git diff" header
1623                         # beginning of patch (in patchset)
1624                         if ($patch_found) {
1625                                 # close previous patch
1626                                 print "</div>\n"; # class="patch"
1627                         } else {
1628                                 # first patch in patchset
1629                                 $patch_found = 1;
1630                         }
1631                         print "<div class=\"patch\">\n";
1632
1633                         %diffinfo = parse_difftree_raw_line($difftree->[$patch_idx++]);
1634
1635                         # for now, no extended header, hence we skip empty patches
1636                         # companion to  next LINE if $in_header;
1637                         if ($diffinfo{'from_id'} eq $diffinfo{'to_id'}) { # no change
1638                                 $in_header = 1;
1639                                 next LINE;
1640                         }
1641
1642                         if ($diffinfo{'status'} eq "A") { # added
1643                                 print "<div class=\"diff_info\">" . file_type($diffinfo{'to_mode'}) . ":" .
1644                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1645                                                              hash=>$diffinfo{'to_id'}, file_name=>$diffinfo{'file'})},
1646                                               $diffinfo{'to_id'}) . "(new)" .
1647                                       "</div>\n"; # class="diff_info"
1648
1649                         } elsif ($diffinfo{'status'} eq "D") { # deleted
1650                                 print "<div class=\"diff_info\">" . file_type($diffinfo{'from_mode'}) . ":" .
1651                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1652                                                              hash=>$diffinfo{'from_id'}, file_name=>$diffinfo{'file'})},
1653                                               $diffinfo{'from_id'}) . "(deleted)" .
1654                                       "</div>\n"; # class="diff_info"
1655
1656                         } elsif ($diffinfo{'status'} eq "R" || # renamed
1657                                  $diffinfo{'status'} eq "C") { # copied
1658                                 print "<div class=\"diff_info\">" .
1659                                       file_type($diffinfo{'from_mode'}) . ":" .
1660                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1661                                                              hash=>$diffinfo{'from_id'}, file_name=>$diffinfo{'from_file'})},
1662                                               $diffinfo{'from_id'}) .
1663                                       " -> " .
1664                                       file_type($diffinfo{'to_mode'}) . ":" .
1665                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1666                                                              hash=>$diffinfo{'to_id'}, file_name=>$diffinfo{'to_file'})},
1667                                               $diffinfo{'to_id'});
1668                                 print "</div>\n"; # class="diff_info"
1669
1670                         } else { # modified, mode changed, ...
1671                                 print "<div class=\"diff_info\">" .
1672                                       file_type($diffinfo{'from_mode'}) . ":" .
1673                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1674                                                              hash=>$diffinfo{'from_id'}, file_name=>$diffinfo{'file'})},
1675                                               $diffinfo{'from_id'}) .
1676                                       " -> " .
1677                                       file_type($diffinfo{'to_mode'}) . ":" .
1678                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1679                                                              hash=>$diffinfo{'to_id'}, file_name=>$diffinfo{'file'})},
1680                                               $diffinfo{'to_id'});
1681                                 print "</div>\n"; # class="diff_info"
1682                         }
1683
1684                         #print "<div class=\"diff extended_header\">\n";
1685                         $in_header = 1;
1686                         next LINE;
1687                 } # start of patch in patchset
1688
1689
1690                 if ($in_header && $patch_line =~ m/^---/) {
1691                         #print "</div>\n"
1692                         $in_header = 0;
1693                 }
1694                 next LINE if $in_header;
1695
1696                 print format_diff_line($patch_line);
1697         }
1698         print "</div>\n" if $patch_found; # class="patch"
1699
1700         print "</div>\n"; # class="patchset"
1701 }
1702
1703 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1704
1705 sub git_shortlog_body {
1706         # uses global variable $project
1707         my ($revlist, $from, $to, $refs, $extra) = @_;
1708
1709         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
1710         my $have_snapshot = (defined $ctype && defined $suffix);
1711
1712         $from = 0 unless defined $from;
1713         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
1714
1715         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
1716         my $alternate = 0;
1717         for (my $i = $from; $i <= $to; $i++) {
1718                 my $commit = $revlist->[$i];
1719                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
1720                 my $ref = format_ref_marker($refs, $commit);
1721                 my %co = parse_commit($commit);
1722                 if ($alternate) {
1723                         print "<tr class=\"dark\">\n";
1724                 } else {
1725                         print "<tr class=\"light\">\n";
1726                 }
1727                 $alternate ^= 1;
1728                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
1729                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1730                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
1731                       "<td>";
1732                 print format_subject_html($co{'title'}, $co{'title_short'},
1733                                           href(action=>"commit", hash=>$commit), $ref);
1734                 print "</td>\n" .
1735                       "<td class=\"link\">" .
1736                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1737                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
1738                 if ($have_snapshot) {
1739                         print " | " .  $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
1740                 }
1741                 print "</td>\n" .
1742                       "</tr>\n";
1743         }
1744         if (defined $extra) {
1745                 print "<tr>\n" .
1746                       "<td colspan=\"4\">$extra</td>\n" .
1747                       "</tr>\n";
1748         }
1749         print "</table>\n";
1750 }
1751
1752 sub git_history_body {
1753         # Warning: assumes constant type (blob or tree) during history
1754         my ($fd, $refs, $hash_base, $ftype, $extra) = @_;
1755
1756         print "<table class=\"history\" cellspacing=\"0\">\n";
1757         my $alternate = 0;
1758         while (my $line = <$fd>) {
1759                 if ($line !~ m/^([0-9a-fA-F]{40})/) {
1760                         next;
1761                 }
1762
1763                 my $commit = $1;
1764                 my %co = parse_commit($commit);
1765                 if (!%co) {
1766                         next;
1767                 }
1768
1769                 my $ref = format_ref_marker($refs, $commit);
1770
1771                 if ($alternate) {
1772                         print "<tr class=\"dark\">\n";
1773                 } else {
1774                         print "<tr class=\"light\">\n";
1775                 }
1776                 $alternate ^= 1;
1777                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
1778                       # shortlog uses      chop_str($co{'author_name'}, 10)
1779                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
1780                       "<td>";
1781                 # originally git_history used chop_str($co{'title'}, 50)
1782                 print format_subject_html($co{'title'}, $co{'title_short'},
1783                                           href(action=>"commit", hash=>$commit), $ref);
1784                 print "</td>\n" .
1785                       "<td class=\"link\">" .
1786                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
1787                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
1788                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype);
1789
1790                 if ($ftype eq 'blob') {
1791                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
1792                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
1793                         if (defined $blob_current && defined $blob_parent &&
1794                                         $blob_current ne $blob_parent) {
1795                                 print " | " .
1796                                         $cgi->a({-href => href(action=>"blobdiff", hash=>$blob_current, hash_parent=>$blob_parent,
1797                                                                hash_base=>$commit, file_name=>$file_name)},
1798                                                 "diff to current");
1799                         }
1800                 }
1801                 print "</td>\n" .
1802                       "</tr>\n";
1803         }
1804         if (defined $extra) {
1805                 print "<tr>\n" .
1806                       "<td colspan=\"4\">$extra</td>\n" .
1807                       "</tr>\n";
1808         }
1809         print "</table>\n";
1810 }
1811
1812 sub git_tags_body {
1813         # uses global variable $project
1814         my ($taglist, $from, $to, $extra) = @_;
1815         $from = 0 unless defined $from;
1816         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1817
1818         print "<table class=\"tags\" cellspacing=\"0\">\n";
1819         my $alternate = 0;
1820         for (my $i = $from; $i <= $to; $i++) {
1821                 my $entry = $taglist->[$i];
1822                 my %tag = %$entry;
1823                 my $comment_lines = $tag{'comment'};
1824                 my $comment = shift @$comment_lines;
1825                 my $comment_short;
1826                 if (defined $comment) {
1827                         $comment_short = chop_str($comment, 30, 5);
1828                 }
1829                 if ($alternate) {
1830                         print "<tr class=\"dark\">\n";
1831                 } else {
1832                         print "<tr class=\"light\">\n";
1833                 }
1834                 $alternate ^= 1;
1835                 print "<td><i>$tag{'age'}</i></td>\n" .
1836                       "<td>" .
1837                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
1838                                -class => "list name"}, esc_html($tag{'name'})) .
1839                       "</td>\n" .
1840                       "<td>";
1841                 if (defined $comment) {
1842                         print format_subject_html($comment, $comment_short,
1843                                                   href(action=>"tag", hash=>$tag{'id'}));
1844                 }
1845                 print "</td>\n" .
1846                       "<td class=\"selflink\">";
1847                 if ($tag{'type'} eq "tag") {
1848                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
1849                 } else {
1850                         print "&nbsp;";
1851                 }
1852                 print "</td>\n" .
1853                       "<td class=\"link\">" . " | " .
1854                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
1855                 if ($tag{'reftype'} eq "commit") {
1856                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
1857                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
1858                 } elsif ($tag{'reftype'} eq "blob") {
1859                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
1860                 }
1861                 print "</td>\n" .
1862                       "</tr>";
1863         }
1864         if (defined $extra) {
1865                 print "<tr>\n" .
1866                       "<td colspan=\"5\">$extra</td>\n" .
1867                       "</tr>\n";
1868         }
1869         print "</table>\n";
1870 }
1871
1872 sub git_heads_body {
1873         # uses global variable $project
1874         my ($taglist, $head, $from, $to, $extra) = @_;
1875         $from = 0 unless defined $from;
1876         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
1877
1878         print "<table class=\"heads\" cellspacing=\"0\">\n";
1879         my $alternate = 0;
1880         for (my $i = $from; $i <= $to; $i++) {
1881                 my $entry = $taglist->[$i];
1882                 my %tag = %$entry;
1883                 my $curr = $tag{'id'} eq $head;
1884                 if ($alternate) {
1885                         print "<tr class=\"dark\">\n";
1886                 } else {
1887                         print "<tr class=\"light\">\n";
1888                 }
1889                 $alternate ^= 1;
1890                 print "<td><i>$tag{'age'}</i></td>\n" .
1891                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
1892                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
1893                                -class => "list name"},esc_html($tag{'name'})) .
1894                       "</td>\n" .
1895                       "<td class=\"link\">" .
1896                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
1897                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") .
1898                       "</td>\n" .
1899                       "</tr>";
1900         }
1901         if (defined $extra) {
1902                 print "<tr>\n" .
1903                       "<td colspan=\"3\">$extra</td>\n" .
1904                       "</tr>\n";
1905         }
1906         print "</table>\n";
1907 }
1908
1909 ## ----------------------------------------------------------------------
1910 ## functions printing large fragments, format as one of arguments
1911
1912 sub git_diff_print {
1913         my $from = shift;
1914         my $from_name = shift;
1915         my $to = shift;
1916         my $to_name = shift;
1917         my $format = shift || "html";
1918
1919         my $from_tmp = "/dev/null";
1920         my $to_tmp = "/dev/null";
1921         my $pid = $$;
1922
1923         # create tmp from-file
1924         if (defined $from) {
1925                 $from_tmp = "$git_temp/gitweb_" . $$ . "_from";
1926                 open my $fd2, "> $from_tmp";
1927                 open my $fd, "-|", $GIT, "cat-file", "blob", $from;
1928                 my @file = <$fd>;
1929                 print $fd2 @file;
1930                 close $fd2;
1931                 close $fd;
1932         }
1933
1934         # create tmp to-file
1935         if (defined $to) {
1936                 $to_tmp = "$git_temp/gitweb_" . $$ . "_to";
1937                 open my $fd2, "> $to_tmp";
1938                 open my $fd, "-|", $GIT, "cat-file", "blob", $to;
1939                 my @file = <$fd>;
1940                 print $fd2 @file;
1941                 close $fd2;
1942                 close $fd;
1943         }
1944
1945         open my $fd, "-|", "/usr/bin/diff -u -p -L \'$from_name\' -L \'$to_name\' $from_tmp $to_tmp";
1946         if ($format eq "plain") {
1947                 undef $/;
1948                 print <$fd>;
1949                 $/ = "\n";
1950         } else {
1951                 while (my $line = <$fd>) {
1952                         chomp $line;
1953                         my $char = substr($line, 0, 1);
1954                         my $diff_class = "";
1955                         if ($char eq '+') {
1956                                 $diff_class = " add";
1957                         } elsif ($char eq "-") {
1958                                 $diff_class = " rem";
1959                         } elsif ($char eq "@") {
1960                                 $diff_class = " chunk_header";
1961                         } elsif ($char eq "\\") {
1962                                 # skip errors
1963                                 next;
1964                         }
1965                         $line = untabify($line);
1966                         print "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
1967                 }
1968         }
1969         close $fd;
1970
1971         if (defined $from) {
1972                 unlink($from_tmp);
1973         }
1974         if (defined $to) {
1975                 unlink($to_tmp);
1976         }
1977 }
1978
1979
1980 ## ======================================================================
1981 ## ======================================================================
1982 ## actions
1983
1984 sub git_project_list {
1985         my $order = $cgi->param('o');
1986         if (defined $order && $order !~ m/project|descr|owner|age/) {
1987                 die_error(undef, "Unknown order parameter");
1988         }
1989
1990         my @list = git_get_projects_list();
1991         my @projects;
1992         if (!@list) {
1993                 die_error(undef, "No projects found");
1994         }
1995         foreach my $pr (@list) {
1996                 my $head = git_get_head_hash($pr->{'path'});
1997                 if (!defined $head) {
1998                         next;
1999                 }
2000                 $ENV{'GIT_DIR'} = "$projectroot/$pr->{'path'}";
2001                 my %co = parse_commit($head);
2002                 if (!%co) {
2003                         next;
2004                 }
2005                 $pr->{'commit'} = \%co;
2006                 if (!defined $pr->{'descr'}) {
2007                         my $descr = git_get_project_description($pr->{'path'}) || "";
2008                         $pr->{'descr'} = chop_str($descr, 25, 5);
2009                 }
2010                 if (!defined $pr->{'owner'}) {
2011                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2012                 }
2013                 push @projects, $pr;
2014         }
2015
2016         git_header_html();
2017         if (-f $home_text) {
2018                 print "<div class=\"index_include\">\n";
2019                 open (my $fd, $home_text);
2020                 print <$fd>;
2021                 close $fd;
2022                 print "</div>\n";
2023         }
2024         print "<table class=\"project_list\">\n" .
2025               "<tr>\n";
2026         $order ||= "project";
2027         if ($order eq "project") {
2028                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2029                 print "<th>Project</th>\n";
2030         } else {
2031                 print "<th>" .
2032                       $cgi->a({-href => "$my_uri?" . esc_param("o=project"),
2033                                -class => "header"}, "Project") .
2034                       "</th>\n";
2035         }
2036         if ($order eq "descr") {
2037                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2038                 print "<th>Description</th>\n";
2039         } else {
2040                 print "<th>" .
2041                       $cgi->a({-href => "$my_uri?" . esc_param("o=descr"),
2042                                -class => "header"}, "Description") .
2043                       "</th>\n";
2044         }
2045         if ($order eq "owner") {
2046                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2047                 print "<th>Owner</th>\n";
2048         } else {
2049                 print "<th>" .
2050                       $cgi->a({-href => "$my_uri?" . esc_param("o=owner"),
2051                                -class => "header"}, "Owner") .
2052                       "</th>\n";
2053         }
2054         if ($order eq "age") {
2055                 @projects = sort {$a->{'commit'}{'age'} <=> $b->{'commit'}{'age'}} @projects;
2056                 print "<th>Last Change</th>\n";
2057         } else {
2058                 print "<th>" .
2059                       $cgi->a({-href => "$my_uri?" . esc_param("o=age"),
2060                                -class => "header"}, "Last Change") .
2061                       "</th>\n";
2062         }
2063         print "<th></th>\n" .
2064               "</tr>\n";
2065         my $alternate = 0;
2066         foreach my $pr (@projects) {
2067                 if ($alternate) {
2068                         print "<tr class=\"dark\">\n";
2069                 } else {
2070                         print "<tr class=\"light\">\n";
2071                 }
2072                 $alternate ^= 1;
2073                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2074                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2075                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2076                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2077                 print "<td class=\"". age_class($pr->{'commit'}{'age'}) . "\">" .
2078                       $pr->{'commit'}{'age_string'} . "</td>\n" .
2079                       "<td class=\"link\">" .
2080                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2081                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2082                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") .
2083                       "</td>\n" .
2084                       "</tr>\n";
2085         }
2086         print "</table>\n";
2087         git_footer_html();
2088 }
2089
2090 sub git_summary {
2091         my $descr = git_get_project_description($project) || "none";
2092         my $head = git_get_head_hash($project);
2093         my %co = parse_commit($head);
2094         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2095
2096         my $owner = git_get_project_owner($project);
2097
2098         my $refs = git_get_references();
2099         git_header_html();
2100         git_print_page_nav('summary','', $head);
2101
2102         print "<div class=\"title\">&nbsp;</div>\n";
2103         print "<table cellspacing=\"0\">\n" .
2104               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2105               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2106               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2107         # use per project git URL list in $projectroot/$project/cloneurl
2108         # or make project git URL from git base URL and project name
2109         my $url_tag = "URL";
2110         my @url_list = git_get_project_url_list($project);
2111         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2112         foreach my $git_url (@url_list) {
2113                 next unless $git_url;
2114                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2115                 $url_tag = "";
2116         }
2117         print "</table>\n";
2118
2119         open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_get_head_hash($project)
2120                 or die_error(undef, "Open git-rev-list failed");
2121         my @revlist = map { chomp; $_ } <$fd>;
2122         close $fd;
2123         git_print_header_div('shortlog');
2124         git_shortlog_body(\@revlist, 0, 15, $refs,
2125                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2126
2127         my $taglist = git_get_refs_list("refs/tags");
2128         if (defined @$taglist) {
2129                 git_print_header_div('tags');
2130                 git_tags_body($taglist, 0, 15,
2131                               $cgi->a({-href => href(action=>"tags")}, "..."));
2132         }
2133
2134         my $headlist = git_get_refs_list("refs/heads");
2135         if (defined @$headlist) {
2136                 git_print_header_div('heads');
2137                 git_heads_body($headlist, $head, 0, 15,
2138                                $cgi->a({-href => href(action=>"heads")}, "..."));
2139         }
2140
2141         git_footer_html();
2142 }
2143
2144 sub git_tag {
2145         my $head = git_get_head_hash($project);
2146         git_header_html();
2147         git_print_page_nav('','', $head,undef,$head);
2148         my %tag = parse_tag($hash);
2149         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2150         print "<div class=\"title_text\">\n" .
2151               "<table cellspacing=\"0\">\n" .
2152               "<tr>\n" .
2153               "<td>object</td>\n" .
2154               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2155                                $tag{'object'}) . "</td>\n" .
2156               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2157                                               $tag{'type'}) . "</td>\n" .
2158               "</tr>\n";
2159         if (defined($tag{'author'})) {
2160                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2161                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2162                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2163                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2164                         "</td></tr>\n";
2165         }
2166         print "</table>\n\n" .
2167               "</div>\n";
2168         print "<div class=\"page_body\">";
2169         my $comment = $tag{'comment'};
2170         foreach my $line (@$comment) {
2171                 print esc_html($line) . "<br/>\n";
2172         }
2173         print "</div>\n";
2174         git_footer_html();
2175 }
2176
2177 sub git_blame2 {
2178         my $fd;
2179         my $ftype;
2180
2181         if (!gitweb_check_feature('blame')) {
2182                 die_error('403 Permission denied', "Permission denied");
2183         }
2184         die_error('404 Not Found', "File name not defined") if (!$file_name);
2185         $hash_base ||= git_get_head_hash($project);
2186         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2187         my %co = parse_commit($hash_base)
2188                 or die_error(undef, "Reading commit failed");
2189         if (!defined $hash) {
2190                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2191                         or die_error(undef, "Error looking up file");
2192         }
2193         $ftype = git_get_type($hash);
2194         if ($ftype !~ "blob") {
2195                 die_error("400 Bad Request", "Object is not a blob");
2196         }
2197         open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
2198                 or die_error(undef, "Open git-blame failed");
2199         git_header_html();
2200         my $formats_nav =
2201                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2202                         "blob") .
2203                 " | " .
2204                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2205                         "head");
2206         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2207         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2208         git_print_page_path($file_name, $ftype, $hash_base);
2209         my @rev_color = (qw(light2 dark2));
2210         my $num_colors = scalar(@rev_color);
2211         my $current_color = 0;
2212         my $last_rev;
2213         print <<HTML;
2214 <div class="page_body">
2215 <table class="blame">
2216 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2217 HTML
2218         while (<$fd>) {
2219                 /^([0-9a-fA-F]{40}).*?(\d+)\)\s{1}(\s*.*)/;
2220                 my $full_rev = $1;
2221                 my $rev = substr($full_rev, 0, 8);
2222                 my $lineno = $2;
2223                 my $data = $3;
2224
2225                 if (!defined $last_rev) {
2226                         $last_rev = $full_rev;
2227                 } elsif ($last_rev ne $full_rev) {
2228                         $last_rev = $full_rev;
2229                         $current_color = ++$current_color % $num_colors;
2230                 }
2231                 print "<tr class=\"$rev_color[$current_color]\">\n";
2232                 print "<td class=\"sha1\">" .
2233                         $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2234                                 esc_html($rev)) . "</td>\n";
2235                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2236                       esc_html($lineno) . "</a></td>\n";
2237                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2238                 print "</tr>\n";
2239         }
2240         print "</table>\n";
2241         print "</div>";
2242         close $fd
2243                 or print "Reading blob failed\n";
2244         git_footer_html();
2245 }
2246
2247 sub git_blame {
2248         my $fd;
2249
2250         if (!gitweb_check_feature('blame')) {
2251                 die_error('403 Permission denied', "Permission denied");
2252         }
2253         die_error('404 Not Found', "File name not defined") if (!$file_name);
2254         $hash_base ||= git_get_head_hash($project);
2255         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2256         my %co = parse_commit($hash_base)
2257                 or die_error(undef, "Reading commit failed");
2258         if (!defined $hash) {
2259                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2260                         or die_error(undef, "Error lookup file");
2261         }
2262         open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2263                 or die_error(undef, "Open git-annotate failed");
2264         git_header_html();
2265         my $formats_nav =
2266                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2267                         "blob") .
2268                 " | " .
2269                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2270                         "head");
2271         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2272         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2273         git_print_page_path($file_name, 'blob', $hash_base);
2274         print "<div class=\"page_body\">\n";
2275         print <<HTML;
2276 <table class="blame">
2277   <tr>
2278     <th>Commit</th>
2279     <th>Age</th>
2280     <th>Author</th>
2281     <th>Line</th>
2282     <th>Data</th>
2283   </tr>
2284 HTML
2285         my @line_class = (qw(light dark));
2286         my $line_class_len = scalar (@line_class);
2287         my $line_class_num = $#line_class;
2288         while (my $line = <$fd>) {
2289                 my $long_rev;
2290                 my $short_rev;
2291                 my $author;
2292                 my $time;
2293                 my $lineno;
2294                 my $data;
2295                 my $age;
2296                 my $age_str;
2297                 my $age_class;
2298
2299                 chomp $line;
2300                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2301
2302                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) \+\d\d\d\d\t(\d+)\)(.*)$/) {
2303                         $long_rev = $1;
2304                         $author   = $2;
2305                         $time     = $3;
2306                         $lineno   = $4;
2307                         $data     = $5;
2308                 } else {
2309                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2310                         next;
2311                 }
2312                 $short_rev  = substr ($long_rev, 0, 8);
2313                 $age        = time () - $time;
2314                 $age_str    = age_string ($age);
2315                 $age_str    =~ s/ /&nbsp;/g;
2316                 $age_class  = age_class($age);
2317                 $author     = esc_html ($author);
2318                 $author     =~ s/ /&nbsp;/g;
2319
2320                 $data = untabify($data);
2321                 $data = esc_html ($data);
2322
2323                 print <<HTML;
2324   <tr class="$line_class[$line_class_num]">
2325     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2326     <td class="$age_class">$age_str</td>
2327     <td>$author</td>
2328     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2329     <td class="pre">$data</td>
2330   </tr>
2331 HTML
2332         } # while (my $line = <$fd>)
2333         print "</table>\n\n";
2334         close $fd
2335                 or print "Reading blob failed.\n";
2336         print "</div>";
2337         git_footer_html();
2338 }
2339
2340 sub git_tags {
2341         my $head = git_get_head_hash($project);
2342         git_header_html();
2343         git_print_page_nav('','', $head,undef,$head);
2344         git_print_header_div('summary', $project);
2345
2346         my $taglist = git_get_refs_list("refs/tags");
2347         if (defined @$taglist) {
2348                 git_tags_body($taglist);
2349         }
2350         git_footer_html();
2351 }
2352
2353 sub git_heads {
2354         my $head = git_get_head_hash($project);
2355         git_header_html();
2356         git_print_page_nav('','', $head,undef,$head);
2357         git_print_header_div('summary', $project);
2358
2359         my $taglist = git_get_refs_list("refs/heads");
2360         if (defined @$taglist) {
2361                 git_heads_body($taglist, $head);
2362         }
2363         git_footer_html();
2364 }
2365
2366 sub git_blob_plain {
2367         if (!defined $hash) {
2368                 if (defined $file_name) {
2369                         my $base = $hash_base || git_get_head_hash($project);
2370                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2371                                 or die_error(undef, "Error lookup file");
2372                 } else {
2373                         die_error(undef, "No file name defined");
2374                 }
2375         }
2376         my $type = shift;
2377         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
2378                 or die_error(undef, "Couldn't cat $file_name, $hash");
2379
2380         $type ||= blob_mimetype($fd, $file_name);
2381
2382         # save as filename, even when no $file_name is given
2383         my $save_as = "$hash";
2384         if (defined $file_name) {
2385                 $save_as = $file_name;
2386         } elsif ($type =~ m/^text\//) {
2387                 $save_as .= '.txt';
2388         }
2389
2390         print $cgi->header(-type => "$type",
2391                            -content_disposition => "inline; filename=\"$save_as\"");
2392         undef $/;
2393         binmode STDOUT, ':raw';
2394         print <$fd>;
2395         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2396         $/ = "\n";
2397         close $fd;
2398 }
2399
2400 sub git_blob {
2401         if (!defined $hash) {
2402                 if (defined $file_name) {
2403                         my $base = $hash_base || git_get_head_hash($project);
2404                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2405                                 or die_error(undef, "Error lookup file");
2406                 } else {
2407                         die_error(undef, "No file name defined");
2408                 }
2409         }
2410         my $have_blame = gitweb_check_feature('blame');
2411         open my $fd, "-|", $GIT, "cat-file", "blob", $hash
2412                 or die_error(undef, "Couldn't cat $file_name, $hash");
2413         my $mimetype = blob_mimetype($fd, $file_name);
2414         if ($mimetype !~ m/^text\//) {
2415                 close $fd;
2416                 return git_blob_plain($mimetype);
2417         }
2418         git_header_html();
2419         my $formats_nav = '';
2420         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2421                 if (defined $file_name) {
2422                         if ($have_blame) {
2423                                 $formats_nav .=
2424                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2425                                                                hash=>$hash, file_name=>$file_name)},
2426                                                 "blame") .
2427                                         " | ";
2428                         }
2429                         $formats_nav .=
2430                                 $cgi->a({-href => href(action=>"blob_plain",
2431                                                        hash=>$hash, file_name=>$file_name)},
2432                                         "plain") .
2433                                 " | " .
2434                                 $cgi->a({-href => href(action=>"blob",
2435                                                        hash_base=>"HEAD", file_name=>$file_name)},
2436                                         "head");
2437                 } else {
2438                         $formats_nav .=
2439                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "plain");
2440                 }
2441                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2442                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2443         } else {
2444                 print "<div class=\"page_nav\">\n" .
2445                       "<br/><br/></div>\n" .
2446                       "<div class=\"title\">$hash</div>\n";
2447         }
2448         git_print_page_path($file_name, "blob", $hash_base);
2449         print "<div class=\"page_body\">\n";
2450         my $nr;
2451         while (my $line = <$fd>) {
2452                 chomp $line;
2453                 $nr++;
2454                 $line = untabify($line);
2455                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2456                        $nr, $nr, $nr, esc_html($line);
2457         }
2458         close $fd
2459                 or print "Reading blob failed.\n";
2460         print "</div>";
2461         git_footer_html();
2462 }
2463
2464 sub git_tree {
2465         if (!defined $hash) {
2466                 $hash = git_get_head_hash($project);
2467                 if (defined $file_name) {
2468                         my $base = $hash_base || $hash;
2469                         $hash = git_get_hash_by_path($base, $file_name, "tree");
2470                 }
2471                 if (!defined $hash_base) {
2472                         $hash_base = $hash;
2473                 }
2474         }
2475         $/ = "\0";
2476         open my $fd, "-|", $GIT, "ls-tree", '-z', $hash
2477                 or die_error(undef, "Open git-ls-tree failed");
2478         my @entries = map { chomp; $_ } <$fd>;
2479         close $fd or die_error(undef, "Reading tree failed");
2480         $/ = "\n";
2481
2482         my $refs = git_get_references();
2483         my $ref = format_ref_marker($refs, $hash_base);
2484         git_header_html();
2485         my %base_key = ();
2486         my $base = "";
2487         my $have_blame = gitweb_check_feature('blame');
2488         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2489                 $base_key{hash_base} = $hash_base;
2490                 git_print_page_nav('tree','', $hash_base);
2491                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2492         } else {
2493                 print "<div class=\"page_nav\">\n";
2494                 print "<br/><br/></div>\n";
2495                 print "<div class=\"title\">$hash</div>\n";
2496         }
2497         if (defined $file_name) {
2498                 $base = esc_html("$file_name/");
2499         }
2500         git_print_page_path($file_name, 'tree', $hash_base);
2501         print "<div class=\"page_body\">\n";
2502         print "<table cellspacing=\"0\">\n";
2503         my $alternate = 0;
2504         foreach my $line (@entries) {
2505                 #'100644        blob    0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa        panic.c'
2506                 $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
2507                 my $t_mode = $1;
2508                 my $t_type = $2;
2509                 my $t_hash = $3;
2510                 my $t_name = validate_input($4);
2511                 if ($alternate) {
2512                         print "<tr class=\"dark\">\n";
2513                 } else {
2514                         print "<tr class=\"light\">\n";
2515                 }
2516                 $alternate ^= 1;
2517                 print "<td class=\"mode\">" . mode_str($t_mode) . "</td>\n";
2518                 if ($t_type eq "blob") {
2519                         print "<td class=\"list\">" .
2520                               $cgi->a({-href => href(action=>"blob", hash=>$t_hash, file_name=>"$base$t_name", %base_key),
2521                                       -class => "list"}, esc_html($t_name)) .
2522                               "</td>\n" .
2523                               "<td class=\"link\">" .
2524                               $cgi->a({-href => href(action=>"blob", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2525                                       "blob");
2526                         if ($have_blame) {
2527                                 print " | " .
2528                                         $cgi->a({-href => href(action=>"blame", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2529                                                 "blame");
2530                         }
2531                         print " | " .
2532                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2533                                                      hash=>$t_hash, file_name=>"$base$t_name")},
2534                                       "history") .
2535                               " | " .
2536                               $cgi->a({-href => href(action=>"blob_plain",
2537                                                      hash=>$t_hash, file_name=>"$base$t_name")},
2538                                       "raw") .
2539                               "</td>\n";
2540                 } elsif ($t_type eq "tree") {
2541                         print "<td class=\"list\">" .
2542                               $cgi->a({-href => href(action=>"tree", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2543                                       esc_html($t_name)) .
2544                               "</td>\n" .
2545                               "<td class=\"link\">" .
2546                               $cgi->a({-href => href(action=>"tree", hash=>$t_hash, file_name=>"$base$t_name", %base_key)},
2547                                       "tree") .
2548                               " | " .
2549                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base, file_name=>"$base$t_name")},
2550                                       "history") .
2551                               "</td>\n";
2552                 }
2553                 print "</tr>\n";
2554         }
2555         print "</table>\n" .
2556               "</div>";
2557         git_footer_html();
2558 }
2559
2560 sub git_snapshot {
2561
2562         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2563         my $have_snapshot = (defined $ctype && defined $suffix);
2564         if (!$have_snapshot) {
2565                 die_error('403 Permission denied', "Permission denied");
2566         }
2567
2568         if (!defined $hash) {
2569                 $hash = git_get_head_hash($project);
2570         }
2571
2572         my $filename = basename($project) . "-$hash.tar.$suffix";
2573
2574         print $cgi->header(-type => 'application/x-tar',
2575                            -content_encoding => $ctype,
2576                            -content_disposition => "inline; filename=\"$filename\"",
2577                            -status => '200 OK');
2578
2579         open my $fd, "-|", "$GIT tar-tree $hash \'$project\' | $command" or
2580                 die_error(undef, "Execute git-tar-tree failed.");
2581         binmode STDOUT, ':raw';
2582         print <$fd>;
2583         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2584         close $fd;
2585
2586 }
2587
2588 sub git_log {
2589         my $head = git_get_head_hash($project);
2590         if (!defined $hash) {
2591                 $hash = $head;
2592         }
2593         if (!defined $page) {
2594                 $page = 0;
2595         }
2596         my $refs = git_get_references();
2597
2598         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2599         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
2600                 or die_error(undef, "Open git-rev-list failed");
2601         my @revlist = map { chomp; $_ } <$fd>;
2602         close $fd;
2603
2604         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2605
2606         git_header_html();
2607         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2608
2609         if (!@revlist) {
2610                 my %co = parse_commit($hash);
2611
2612                 git_print_header_div('summary', $project);
2613                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2614         }
2615         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2616                 my $commit = $revlist[$i];
2617                 my $ref = format_ref_marker($refs, $commit);
2618                 my %co = parse_commit($commit);
2619                 next if !%co;
2620                 my %ad = parse_date($co{'author_epoch'});
2621                 git_print_header_div('commit',
2622                                "<span class=\"age\">$co{'age_string'}</span>" .
2623                                esc_html($co{'title'}) . $ref,
2624                                $commit);
2625                 print "<div class=\"title_text\">\n" .
2626                       "<div class=\"log_link\">\n" .
2627                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2628                       " | " .
2629                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2630                       "<br/>\n" .
2631                       "</div>\n" .
2632                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2633                       "</div>\n";
2634
2635                 print "<div class=\"log_body\">\n";
2636                 git_print_simplified_log($co{'comment'});
2637                 print "</div>\n";
2638         }
2639         git_footer_html();
2640 }
2641
2642 sub git_commit {
2643         my %co = parse_commit($hash);
2644         if (!%co) {
2645                 die_error(undef, "Unknown commit object");
2646         }
2647         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2648         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2649
2650         my $parent = $co{'parent'};
2651         if (!defined $parent) {
2652                 $parent = "--root";
2653         }
2654         open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $parent, $hash
2655                 or die_error(undef, "Open git-diff-tree failed");
2656         my @difftree = map { chomp; $_ } <$fd>;
2657         close $fd or die_error(undef, "Reading git-diff-tree failed");
2658
2659         # non-textual hash id's can be cached
2660         my $expires;
2661         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2662                 $expires = "+1d";
2663         }
2664         my $refs = git_get_references();
2665         my $ref = format_ref_marker($refs, $co{'id'});
2666
2667         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2668         my $have_snapshot = (defined $ctype && defined $suffix);
2669
2670         my $formats_nav = '';
2671         if (defined $file_name && defined $co{'parent'}) {
2672                 my $parent = $co{'parent'};
2673                 $formats_nav .=
2674                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
2675                                 "blame");
2676         }
2677         git_header_html(undef, $expires);
2678         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
2679                            $hash, $co{'tree'}, $hash,
2680                            $formats_nav);
2681
2682         if (defined $co{'parent'}) {
2683                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
2684         } else {
2685                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
2686         }
2687         print "<div class=\"title_text\">\n" .
2688               "<table cellspacing=\"0\">\n";
2689         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
2690               "<tr>" .
2691               "<td></td><td> $ad{'rfc2822'}";
2692         if ($ad{'hour_local'} < 6) {
2693                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2694                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2695         } else {
2696                 printf(" (%02d:%02d %s)",
2697                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2698         }
2699         print "</td>" .
2700               "</tr>\n";
2701         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
2702         print "<tr><td></td><td> $cd{'rfc2822'}" .
2703               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
2704               "</td></tr>\n";
2705         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
2706         print "<tr>" .
2707               "<td>tree</td>" .
2708               "<td class=\"sha1\">" .
2709               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
2710                        class => "list"}, $co{'tree'}) .
2711               "</td>" .
2712               "<td class=\"link\">" .
2713               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
2714                       "tree");
2715         if ($have_snapshot) {
2716                 print " | " .
2717                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
2718         }
2719         print "</td>" .
2720               "</tr>\n";
2721         my $parents = $co{'parents'};
2722         foreach my $par (@$parents) {
2723                 print "<tr>" .
2724                       "<td>parent</td>" .
2725                       "<td class=\"sha1\">" .
2726                       $cgi->a({-href => href(action=>"commit", hash=>$par),
2727                                class => "list"}, $par) .
2728                       "</td>" .
2729                       "<td class=\"link\">" .
2730                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
2731                       " | " .
2732                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "commitdiff") .
2733                       "</td>" .
2734                       "</tr>\n";
2735         }
2736         print "</table>".
2737               "</div>\n";
2738
2739         print "<div class=\"page_body\">\n";
2740         git_print_log($co{'comment'});
2741         print "</div>\n";
2742
2743         git_difftree_body(\@difftree, $hash, $parent);
2744
2745         git_footer_html();
2746 }
2747
2748 sub git_blobdiff {
2749         mkdir($git_temp, 0700);
2750         git_header_html();
2751         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2752                 my $formats_nav =
2753                         $cgi->a({-href => href(action=>"blobdiff_plain",
2754                                                hash=>$hash, hash_parent=>$hash_parent)},
2755                                 "plain");
2756                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2757                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2758         } else {
2759                 print <<HTML;
2760 <div class="page_nav"><br/><br/></div>
2761 <div class="title">$hash vs $hash_parent</div>
2762 HTML
2763         }
2764         git_print_page_path($file_name, "blob", $hash_base);
2765         print "<div class=\"page_body\">\n" .
2766               "<div class=\"diff_info\">blob:" .
2767               $cgi->a({-href => href(action=>"blob", hash=>$hash_parent,
2768                                      hash_base=>$hash_base, file_name=>($file_parent || $file_name))},
2769                       $hash_parent) .
2770               " -> blob:" .
2771               $cgi->a({-href => href(action=>"blob", hash=>$hash,
2772                                      hash_base=>$hash_base, file_name=>$file_name)},
2773                       $hash) .
2774               "</div>\n";
2775         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash);
2776         print "</div>"; # page_body
2777         git_footer_html();
2778 }
2779
2780 sub git_blobdiff_plain {
2781         mkdir($git_temp, 0700);
2782         print $cgi->header(-type => "text/plain", -charset => 'utf-8');
2783         git_diff_print($hash_parent, $file_name || $hash_parent, $hash, $file_name || $hash, "plain");
2784 }
2785
2786 sub git_commitdiff {
2787         my $format = shift || 'html';
2788         my %co = parse_commit($hash);
2789         if (!%co) {
2790                 die_error(undef, "Unknown commit object");
2791         }
2792         if (!defined $hash_parent) {
2793                 $hash_parent = $co{'parent'} || '--root';
2794         }
2795
2796         # read commitdiff
2797         my $fd;
2798         my @difftree;
2799         if ($format eq 'html') {
2800                 open $fd, "-|", $GIT, "diff-tree", '-r', '-M', '-C',
2801                         "--patch-with-raw", "--full-index", $hash_parent, $hash
2802                         or die_error(undef, "Open git-diff-tree failed");
2803
2804                 while (chomp(my $line = <$fd>)) {
2805                         # empty line ends raw part of diff-tree output
2806                         last unless $line;
2807                         push @difftree, $line;
2808                 }
2809
2810         } elsif ($format eq 'plain') {
2811                 open $fd, "-|", $GIT, "diff-tree", '-r', '-p', '-B', $hash_parent, $hash
2812                         or die_error(undef, "Open git-diff-tree failed");
2813
2814         } else {
2815                 die_error(undef, "Unknown commitdiff format");
2816         }
2817
2818         # non-textual hash id's can be cached
2819         my $expires;
2820         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2821                 $expires = "+1d";
2822         }
2823
2824         # write commit message
2825         if ($format eq 'html') {
2826                 my $refs = git_get_references();
2827                 my $ref = format_ref_marker($refs, $co{'id'});
2828                 my $formats_nav =
2829                         $cgi->a({-href => href(action=>"commitdiff_plain",
2830                                                hash=>$hash, hash_parent=>$hash_parent)},
2831                                 "plain");
2832
2833                 git_header_html(undef, $expires);
2834                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
2835                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
2836                 print "<div class=\"page_body\">\n";
2837                 print "<div class=\"log\">\n";
2838                 git_print_simplified_log($co{'comment'}, 1); # skip title
2839                 print "</div>\n"; # class="log"
2840
2841         } elsif ($format eq 'plain') {
2842                 my $refs = git_get_references("tags");
2843                 my @tagnames;
2844                 if (exists $refs->{$hash}) {
2845                         @tagnames = map { s|^tags/|| } $refs->{$hash};
2846                 }
2847                 my $filename = basename($project) . "-$hash.patch";
2848
2849                 print $cgi->header(
2850                         -type => 'text/plain',
2851                         -charset => 'utf-8',
2852                         -expires => $expires,
2853                         -content_disposition => qq(inline; filename="$filename"));
2854                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2855                 print <<TEXT;
2856 From: $co{'author'}
2857 Date: $ad{'rfc2822'} ($ad{'tz_local'})
2858 Subject: $co{'title'}
2859 TEXT
2860                 foreach my $tag (@tagnames) {
2861                         print "X-Git-Tag: $tag\n";
2862                 }
2863                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
2864                 foreach my $line (@{$co{'comment'}}) {
2865                         print "$line\n";
2866                 }
2867                 print "---\n\n";
2868         }
2869
2870         # write patch
2871         if ($format eq 'html') {
2872                 #git_difftree_body(\@difftree, $hash, $hash_parent);
2873                 #print "<br/>\n";
2874
2875                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
2876                 close $fd;
2877                 print "</div>\n"; # class="page_body"
2878                 git_footer_html();
2879
2880         } elsif ($format eq 'plain') {
2881                 local $/ = undef;
2882                 print <$fd>;
2883                 close $fd
2884                         or print "Reading git-diff-tree failed\n";
2885         }
2886 }
2887
2888 sub git_commitdiff_plain {
2889         git_commitdiff('plain');
2890 }
2891
2892 sub git_history {
2893         if (!defined $hash_base) {
2894                 $hash_base = git_get_head_hash($project);
2895         }
2896         my $ftype;
2897         my %co = parse_commit($hash_base);
2898         if (!%co) {
2899                 die_error(undef, "Unknown commit object");
2900         }
2901         my $refs = git_get_references();
2902         git_header_html();
2903         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base);
2904         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2905         if (!defined $hash && defined $file_name) {
2906                 $hash = git_get_hash_by_path($hash_base, $file_name);
2907         }
2908         if (defined $hash) {
2909                 $ftype = git_get_type($hash);
2910         }
2911         git_print_page_path($file_name, $ftype, $hash_base);
2912
2913         open my $fd, "-|",
2914                 $GIT, "rev-list", "--full-history", $hash_base, "--", $file_name;
2915         git_history_body($fd, $refs, $hash_base, $ftype);
2916
2917         close $fd;
2918         git_footer_html();
2919 }
2920
2921 sub git_search {
2922         if (!defined $searchtext) {
2923                 die_error(undef, "Text field empty");
2924         }
2925         if (!defined $hash) {
2926                 $hash = git_get_head_hash($project);
2927         }
2928         my %co = parse_commit($hash);
2929         if (!%co) {
2930                 die_error(undef, "Unknown commit object");
2931         }
2932         # pickaxe may take all resources of your box and run for several minutes
2933         # with every query - so decide by yourself how public you make this feature :)
2934         my $commit_search = 1;
2935         my $author_search = 0;
2936         my $committer_search = 0;
2937         my $pickaxe_search = 0;
2938         if ($searchtext =~ s/^author\\://i) {
2939                 $author_search = 1;
2940         } elsif ($searchtext =~ s/^committer\\://i) {
2941                 $committer_search = 1;
2942         } elsif ($searchtext =~ s/^pickaxe\\://i) {
2943                 $commit_search = 0;
2944                 $pickaxe_search = 1;
2945         }
2946         git_header_html();
2947         git_print_page_nav('','', $hash,$co{'tree'},$hash);
2948         git_print_header_div('commit', esc_html($co{'title'}), $hash);
2949
2950         print "<table cellspacing=\"0\">\n";
2951         my $alternate = 0;
2952         if ($commit_search) {
2953                 $/ = "\0";
2954                 open my $fd, "-|", $GIT, "rev-list", "--header", "--parents", $hash or next;
2955                 while (my $commit_text = <$fd>) {
2956                         if (!grep m/$searchtext/i, $commit_text) {
2957                                 next;
2958                         }
2959                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
2960                                 next;
2961                         }
2962                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
2963                                 next;
2964                         }
2965                         my @commit_lines = split "\n", $commit_text;
2966                         my %co = parse_commit(undef, \@commit_lines);
2967                         if (!%co) {
2968                                 next;
2969                         }
2970                         if ($alternate) {
2971                                 print "<tr class=\"dark\">\n";
2972                         } else {
2973                                 print "<tr class=\"light\">\n";
2974                         }
2975                         $alternate ^= 1;
2976                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2977                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2978                               "<td>" .
2979                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2980                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2981                         my $comment = $co{'comment'};
2982                         foreach my $line (@$comment) {
2983                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2984                                         my $lead = esc_html($1) || "";
2985                                         $lead = chop_str($lead, 30, 10);
2986                                         my $match = esc_html($2) || "";
2987                                         my $trail = esc_html($3) || "";
2988                                         $trail = chop_str($trail, 30, 10);
2989                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
2990                                         print chop_str($text, 80, 5) . "<br/>\n";
2991                                 }
2992                         }
2993                         print "</td>\n" .
2994                               "<td class=\"link\">" .
2995                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2996                               " | " .
2997                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2998                         print "</td>\n" .
2999                               "</tr>\n";
3000                 }
3001                 close $fd;
3002         }
3003
3004         if ($pickaxe_search) {
3005                 $/ = "\n";
3006                 open my $fd, "-|", "$GIT rev-list $hash | $GIT diff-tree -r --stdin -S\'$searchtext\'";
3007                 undef %co;
3008                 my @files;
3009                 while (my $line = <$fd>) {
3010                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3011                                 my %set;
3012                                 $set{'file'} = $6;
3013                                 $set{'from_id'} = $3;
3014                                 $set{'to_id'} = $4;
3015                                 $set{'id'} = $set{'to_id'};
3016                                 if ($set{'id'} =~ m/0{40}/) {
3017                                         $set{'id'} = $set{'from_id'};
3018                                 }
3019                                 if ($set{'id'} =~ m/0{40}/) {
3020                                         next;
3021                                 }
3022                                 push @files, \%set;
3023                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3024                                 if (%co) {
3025                                         if ($alternate) {
3026                                                 print "<tr class=\"dark\">\n";
3027                                         } else {
3028                                                 print "<tr class=\"light\">\n";
3029                                         }
3030                                         $alternate ^= 1;
3031                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3032                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3033                                               "<td>" .
3034                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3035                                                       -class => "list subject"},
3036                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3037                                         while (my $setref = shift @files) {
3038                                                 my %set = %$setref;
3039                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3040                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3041                                                               -class => "list"},
3042                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3043                                                       "<br/>\n";
3044                                         }
3045                                         print "</td>\n" .
3046                                               "<td class=\"link\">" .
3047                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3048                                               " | " .
3049                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3050                                         print "</td>\n" .
3051                                               "</tr>\n";
3052                                 }
3053                                 %co = parse_commit($1);
3054                         }
3055                 }
3056                 close $fd;
3057         }
3058         print "</table>\n";
3059         git_footer_html();
3060 }
3061
3062 sub git_shortlog {
3063         my $head = git_get_head_hash($project);
3064         if (!defined $hash) {
3065                 $hash = $head;
3066         }
3067         if (!defined $page) {
3068                 $page = 0;
3069         }
3070         my $refs = git_get_references();
3071
3072         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3073         open my $fd, "-|", $GIT, "rev-list", $limit, $hash
3074                 or die_error(undef, "Open git-rev-list failed");
3075         my @revlist = map { chomp; $_ } <$fd>;
3076         close $fd;
3077
3078         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3079         my $next_link = '';
3080         if ($#revlist >= (100 * ($page+1)-1)) {
3081                 $next_link =
3082                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3083                                  -title => "Alt-n"}, "next");
3084         }
3085
3086
3087         git_header_html();
3088         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3089         git_print_header_div('summary', $project);
3090
3091         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3092
3093         git_footer_html();
3094 }
3095
3096 ## ......................................................................
3097 ## feeds (RSS, OPML)
3098
3099 sub git_rss {
3100         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3101         open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_get_head_hash($project)
3102                 or die_error(undef, "Open git-rev-list failed");
3103         my @revlist = map { chomp; $_ } <$fd>;
3104         close $fd or die_error(undef, "Reading git-rev-list failed");
3105         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3106         print <<XML;
3107 <?xml version="1.0" encoding="utf-8"?>
3108 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3109 <channel>
3110 <title>$project $my_uri $my_url</title>
3111 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3112 <description>$project log</description>
3113 <language>en</language>
3114 XML
3115
3116         for (my $i = 0; $i <= $#revlist; $i++) {
3117                 my $commit = $revlist[$i];
3118                 my %co = parse_commit($commit);
3119                 # we read 150, we always show 30 and the ones more recent than 48 hours
3120                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3121                         last;
3122                 }
3123                 my %cd = parse_date($co{'committer_epoch'});
3124                 open $fd, "-|", $GIT, "diff-tree", '-r', $co{'parent'}, $co{'id'} or next;
3125                 my @difftree = map { chomp; $_ } <$fd>;
3126                 close $fd or next;
3127                 print "<item>\n" .
3128                       "<title>" .
3129                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3130                       "</title>\n" .
3131                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3132                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3133                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3134                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3135                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3136                       "<content:encoded>" .
3137                       "<![CDATA[\n";
3138                 my $comment = $co{'comment'};
3139                 foreach my $line (@$comment) {
3140                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3141                         print "$line<br/>\n";
3142                 }
3143                 print "<br/>\n";
3144                 foreach my $line (@difftree) {
3145                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3146                                 next;
3147                         }
3148                         my $file = validate_input(unquote($7));
3149                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3150                         print "$file<br/>\n";
3151                 }
3152                 print "]]>\n" .
3153                       "</content:encoded>\n" .
3154                       "</item>\n";
3155         }
3156         print "</channel></rss>";
3157 }
3158
3159 sub git_opml {
3160         my @list = git_get_projects_list();
3161
3162         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3163         print <<XML;
3164 <?xml version="1.0" encoding="utf-8"?>
3165 <opml version="1.0">
3166 <head>
3167   <title>$site_name Git OPML Export</title>
3168 </head>
3169 <body>
3170 <outline text="git RSS feeds">
3171 XML
3172
3173         foreach my $pr (@list) {
3174                 my %proj = %$pr;
3175                 my $head = git_get_head_hash($proj{'path'});
3176                 if (!defined $head) {
3177                         next;
3178                 }
3179                 $ENV{'GIT_DIR'} = "$projectroot/$proj{'path'}";
3180                 my %co = parse_commit($head);
3181                 if (!%co) {
3182                         next;
3183                 }
3184
3185                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3186                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3187                 my $html = "$my_url?p=$proj{'path'};a=summary";
3188                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3189         }
3190         print <<XML;
3191 </outline>
3192 </body>
3193 </opml>
3194 XML
3195 }