gitweb/gitweb.perl

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