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 $site_name = "++GITWEB_SITENAME++"
  43                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  44
  45 # filename of html text to include at top of each page
  46 our $site_header = "++GITWEB_SITE_HEADER++";
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49 # filename of html text to include at bottom of each page
  50 our $site_footer = "++GITWEB_SITE_FOOTER++";
  51
  52 # URI of stylesheets
  53 our @stylesheets = ("++GITWEB_CSS++");
  54 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55 our $stylesheet = undef;
  56 # URI of GIT logo (72x27 size)
  57 our $logo = "++GITWEB_LOGO++";
  58 # URI of GIT favicon, assumed to be image/png type
  59 our $favicon = "++GITWEB_FAVICON++";
  60
  61 # URI and label (title) of GIT logo link
  62 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  63 #our $logo_label = "git documentation";
  64 our $logo_url = "http://git.or.cz/";
  65 our $logo_label = "git homepage";
  66
  67 # source of projects list
  68 our $projects_list = "++GITWEB_LIST++";
  69
  70 # show repository only if this file exists
  71 # (only effective if this variable evaluates to true)
  72 our $export_ok = "++GITWEB_EXPORT_OK++";
  73
  74 # only allow viewing of repositories also shown on the overview page
  75 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  76
  77 # list of git base URLs used for URL to where fetch project from,
  78 # i.e. full URL is "$git_base_url/$project"
  79 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  80
  81 # default blob_plain mimetype and default charset for text/plain blob
  82 our $default_blob_plain_mimetype = 'text/plain';
  83 our $default_text_plain_charset  = undef;
  84
  85 # file to use for guessing MIME types before trying /etc/mime.types
  86 # (relative to the current git repository)
  87 our $mimetypes_file = undef;
  88
  89 # You define site-wide feature defaults here; override them with
  90 # $GITWEB_CONFIG as necessary.
  91 our %feature = (
  92         # feature => {
  93         #       'sub' => feature-sub (subroutine),
  94         #       'override' => allow-override (boolean),
  95         #       'default' => [ default options...] (array reference)}
  96         #
  97         # if feature is overridable (it means that allow-override has true value,
  98         # then feature-sub will be called with default options as parameters;
  99         # return value of feature-sub indicates if to enable specified feature
 100         #
 101         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 102
 103         # Enable the 'blame' blob view, showing the last commit that modified
 104         # each line in the file. This can be very CPU-intensive.
 105
 106         # To enable system wide have in $GITWEB_CONFIG
 107         # $feature{'blame'}{'default'} = [1];
 108         # To have project specific config enable override in $GITWEB_CONFIG
 109         # $feature{'blame'}{'override'} = 1;
 110         # and in project config gitweb.blame = 0|1;
 111         'blame' => {
 112                 'sub' => \&feature_blame,
 113                 'override' => 0,
 114                 'default' => [0]},
 115
 116         # Enable the 'snapshot' link, providing a compressed tarball of any
 117         # tree. This can potentially generate high traffic if you have large
 118         # project.
 119
 120         # To disable system wide have in $GITWEB_CONFIG
 121         # $feature{'snapshot'}{'default'} = [undef];
 122         # To have project specific config enable override in $GITWEB_CONFIG
 123         # $feature{'blame'}{'override'} = 1;
 124         # and in project config gitweb.snapshot = none|gzip|bzip2;
 125         'snapshot' => {
 126                 'sub' => \&feature_snapshot,
 127                 'override' => 0,
 128                 #         => [content-encoding, suffix, program]
 129                 'default' => ['x-gzip', 'gz', 'gzip']},
 130
 131         # Enable the pickaxe search, which will list the commits that modified
 132         # a given string in a file. This can be practical and quite faster
 133         # alternative to 'blame', but still potentially CPU-intensive.
 134
 135         # To enable system wide have in $GITWEB_CONFIG
 136         # $feature{'pickaxe'}{'default'} = [1];
 137         # To have project specific config enable override in $GITWEB_CONFIG
 138         # $feature{'pickaxe'}{'override'} = 1;
 139         # and in project config gitweb.pickaxe = 0|1;
 140         'pickaxe' => {
 141                 'sub' => \&feature_pickaxe,
 142                 'override' => 0,
 143                 'default' => [1]},
 144
 145         # Make gitweb use an alternative format of the URLs which can be
 146         # more readable and natural-looking: project name is embedded
 147         # directly in the path and the query string contains other
 148         # auxiliary information. All gitweb installations recognize
 149         # URL in either format; this configures in which formats gitweb
 150         # generates links.
 151
 152         # To enable system wide have in $GITWEB_CONFIG
 153         # $feature{'pathinfo'}{'default'} = [1];
 154         # Project specific override is not supported.
 155
 156         # Note that you will need to change the default location of CSS,
 157         # favicon, logo and possibly other files to an absolute URL. Also,
 158         # if gitweb.cgi serves as your indexfile, you will need to force
 159         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 160         'pathinfo' => {
 161                 'override' => 0,
 162                 'default' => [0]},
 163 );
 164
 165 sub gitweb_check_feature {
 166         my ($name) = @_;
 167         return unless exists $feature{$name};
 168         my ($sub, $override, @defaults) = (
 169                 $feature{$name}{'sub'},
 170                 $feature{$name}{'override'},
 171                 @{$feature{$name}{'default'}});
 172         if (!$override) { return @defaults; }
 173         if (!defined $sub) {
 174                 warn "feature $name is not overrideable";
 175                 return @defaults;
 176         }
 177         return $sub->(@defaults);
 178 }
 179
 180 sub feature_blame {
 181         my ($val) = git_get_project_config('blame', '--bool');
 182
 183         if ($val eq 'true') {
 184                 return 1;
 185         } elsif ($val eq 'false') {
 186                 return 0;
 187         }
 188
 189         return $_[0];
 190 }
 191
 192 sub feature_snapshot {
 193         my ($ctype, $suffix, $command) = @_;
 194
 195         my ($val) = git_get_project_config('snapshot');
 196
 197         if ($val eq 'gzip') {
 198                 return ('x-gzip', 'gz', 'gzip');
 199         } elsif ($val eq 'bzip2') {
 200                 return ('x-bzip2', 'bz2', 'bzip2');
 201         } elsif ($val eq 'none') {
 202                 return ();
 203         }
 204
 205         return ($ctype, $suffix, $command);
 206 }
 207
 208 sub gitweb_have_snapshot {
 209         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 210         my $have_snapshot = (defined $ctype && defined $suffix);
 211
 212         return $have_snapshot;
 213 }
 214
 215 sub feature_pickaxe {
 216         my ($val) = git_get_project_config('pickaxe', '--bool');
 217
 218         if ($val eq 'true') {
 219                 return (1);
 220         } elsif ($val eq 'false') {
 221                 return (0);
 222         }
 223
 224         return ($_[0]);
 225 }
 226
 227 # checking HEAD file with -e is fragile if the repository was
 228 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 229 # and then pruned.
 230 sub check_head_link {
 231         my ($dir) = @_;
 232         my $headfile = "$dir/HEAD";
 233         return ((-e $headfile) ||
 234                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 235 }
 236
 237 sub check_export_ok {
 238         my ($dir) = @_;
 239         return (check_head_link($dir) &&
 240                 (!$export_ok || -e "$dir/$export_ok"));
 241 }
 242
 243 # rename detection options for git-diff and git-diff-tree
 244 # - default is '-M', with the cost proportional to
 245 #   (number of removed files) * (number of new files).
 246 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 247 #   (number of changed files + number of removed files) * (number of new files)
 248 # - even more costly is '-C', '--find-copies-harder' with cost
 249 #   (number of files in the original tree) * (number of new files)
 250 # - one might want to include '-B' option, e.g. '-B', '-M'
 251 our @diff_opts = ('-M'); # taken from git_commit
 252
 253 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 254 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 255
 256 # version of the core git binary
 257 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 258
 259 $projects_list ||= $projectroot;
 260
 261 # ======================================================================
 262 # input validation and dispatch
 263 our $action = $cgi->param('a');
 264 if (defined $action) {
 265         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 266                 die_error(undef, "Invalid action parameter");
 267         }
 268 }
 269
 270 # parameters which are pathnames
 271 our $project = $cgi->param('p');
 272 if (defined $project) {
 273         if (!validate_pathname($project) ||
 274             !(-d "$projectroot/$project") ||
 275             !check_head_link("$projectroot/$project") ||
 276             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 277             ($strict_export && !project_in_list($project))) {
 278                 undef $project;
 279                 die_error(undef, "No such project");
 280         }
 281 }
 282
 283 our $file_name = $cgi->param('f');
 284 if (defined $file_name) {
 285         if (!validate_pathname($file_name)) {
 286                 die_error(undef, "Invalid file parameter");
 287         }
 288 }
 289
 290 our $file_parent = $cgi->param('fp');
 291 if (defined $file_parent) {
 292         if (!validate_pathname($file_parent)) {
 293                 die_error(undef, "Invalid file parent parameter");
 294         }
 295 }
 296
 297 # parameters which are refnames
 298 our $hash = $cgi->param('h');
 299 if (defined $hash) {
 300         if (!validate_refname($hash)) {
 301                 die_error(undef, "Invalid hash parameter");
 302         }
 303 }
 304
 305 our $hash_parent = $cgi->param('hp');
 306 if (defined $hash_parent) {
 307         if (!validate_refname($hash_parent)) {
 308                 die_error(undef, "Invalid hash parent parameter");
 309         }
 310 }
 311
 312 our $hash_base = $cgi->param('hb');
 313 if (defined $hash_base) {
 314         if (!validate_refname($hash_base)) {
 315                 die_error(undef, "Invalid hash base parameter");
 316         }
 317 }
 318
 319 our $hash_parent_base = $cgi->param('hpb');
 320 if (defined $hash_parent_base) {
 321         if (!validate_refname($hash_parent_base)) {
 322                 die_error(undef, "Invalid hash parent base parameter");
 323         }
 324 }
 325
 326 # other parameters
 327 our $page = $cgi->param('pg');
 328 if (defined $page) {
 329         if ($page =~ m/[^0-9]/) {
 330                 die_error(undef, "Invalid page parameter");
 331         }
 332 }
 333
 334 our $searchtext = $cgi->param('s');
 335 if (defined $searchtext) {
 336         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 337                 die_error(undef, "Invalid search parameter");
 338         }
 339         $searchtext = quotemeta $searchtext;
 340 }
 341
 342 our $searchtype = $cgi->param('st');
 343 if (defined $searchtype) {
 344         if ($searchtype =~ m/[^a-z]/) {
 345                 die_error(undef, "Invalid searchtype parameter");
 346         }
 347 }
 348
 349 # now read PATH_INFO and use it as alternative to parameters
 350 sub evaluate_path_info {
 351         return if defined $project;
 352         my $path_info = $ENV{"PATH_INFO"};
 353         return if !$path_info;
 354         $path_info =~ s,^/+,,;
 355         return if !$path_info;
 356         # find which part of PATH_INFO is project
 357         $project = $path_info;
 358         $project =~ s,/+$,,;
 359         while ($project && !check_head_link("$projectroot/$project")) {
 360                 $project =~ s,/*[^/]*$,,;
 361         }
 362         # validate project
 363         $project = validate_pathname($project);
 364         if (!$project ||
 365             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 366             ($strict_export && !project_in_list($project))) {
 367                 undef $project;
 368                 return;
 369         }
 370         # do not change any parameters if an action is given using the query string
 371         return if $action;
 372         $path_info =~ s,^$project/*,,;
 373         my ($refname, $pathname) = split(/:/, $path_info, 2);
 374         if (defined $pathname) {
 375                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 376                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 377                 $pathname =~ s,^/+,,;
 378                 if (!$pathname || substr($pathname, -1) eq "/") {
 379                         $action  ||= "tree";
 380                         $pathname =~ s,/$,,;
 381                 } else {
 382                         $action  ||= "blob_plain";
 383                 }
 384                 $hash_base ||= validate_refname($refname);
 385                 $file_name ||= validate_pathname($pathname);
 386         } elsif (defined $refname) {
 387                 # we got "project.git/branch"
 388                 $action ||= "shortlog";
 389                 $hash   ||= validate_refname($refname);
 390         }
 391 }
 392 evaluate_path_info();
 393
 394 # path to the current git repository
 395 our $git_dir;
 396 $git_dir = "$projectroot/$project" if $project;
 397
 398 # dispatch
 399 my %actions = (
 400         "blame" => \&git_blame2,
 401         "blobdiff" => \&git_blobdiff,
 402         "blobdiff_plain" => \&git_blobdiff_plain,
 403         "blob" => \&git_blob,
 404         "blob_plain" => \&git_blob_plain,
 405         "commitdiff" => \&git_commitdiff,
 406         "commitdiff_plain" => \&git_commitdiff_plain,
 407         "commit" => \&git_commit,
 408         "heads" => \&git_heads,
 409         "history" => \&git_history,
 410         "log" => \&git_log,
 411         "rss" => \&git_rss,
 412         "search" => \&git_search,
 413         "search_help" => \&git_search_help,
 414         "shortlog" => \&git_shortlog,
 415         "summary" => \&git_summary,
 416         "tag" => \&git_tag,
 417         "tags" => \&git_tags,
 418         "tree" => \&git_tree,
 419         "snapshot" => \&git_snapshot,
 420         # those below don't need $project
 421         "opml" => \&git_opml,
 422         "project_list" => \&git_project_list,
 423         "project_index" => \&git_project_index,
 424 );
 425
 426 if (defined $project) {
 427         $action ||= 'summary';
 428 } else {
 429         $action ||= 'project_list';
 430 }
 431 if (!defined($actions{$action})) {
 432         die_error(undef, "Unknown action");
 433 }
 434 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 435     !$project) {
 436         die_error(undef, "Project needed");
 437 }
 438 $actions{$action}->();
 439 exit;
 440
 441 ## ======================================================================
 442 ## action links
 443
 444 sub href(%) {
 445         my %params = @_;
 446         my $href = $my_uri;
 447
 448         # XXX: Warning: If you touch this, check the search form for updating,
 449         # too.
 450
 451         my @mapping = (
 452                 project => "p",
 453                 action => "a",
 454                 file_name => "f",
 455                 file_parent => "fp",
 456                 hash => "h",
 457                 hash_parent => "hp",
 458                 hash_base => "hb",
 459                 hash_parent_base => "hpb",
 460                 page => "pg",
 461                 order => "o",
 462                 searchtext => "s",
 463                 searchtype => "st",
 464         );
 465         my %mapping = @mapping;
 466
 467         $params{'project'} = $project unless exists $params{'project'};
 468
 469         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 470         if ($use_pathinfo) {
 471                 # use PATH_INFO for project name
 472                 $href .= "/$params{'project'}" if defined $params{'project'};
 473                 delete $params{'project'};
 474
 475                 # Summary just uses the project path URL
 476                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 477                         delete $params{'action'};
 478                 }
 479         }
 480
 481         # now encode the parameters explicitly
 482         my @result = ();
 483         for (my $i = 0; $i < @mapping; $i += 2) {
 484                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 485                 if (defined $params{$name}) {
 486                         push @result, $symbol . "=" . esc_param($params{$name});
 487                 }
 488         }
 489         $href .= "?" . join(';', @result) if scalar @result;
 490
 491         return $href;
 492 }
 493
 494
 495 ## ======================================================================
 496 ## validation, quoting/unquoting and escaping
 497
 498 sub validate_pathname {
 499         my $input = shift || return undef;
 500
 501         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 502         # at the beginning, at the end, and between slashes.
 503         # also this catches doubled slashes
 504         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 505                 return undef;
 506         }
 507         # no null characters
 508         if ($input =~ m!\0!) {
 509                 return undef;
 510         }
 511         return $input;
 512 }
 513
 514 sub validate_refname {
 515         my $input = shift || return undef;
 516
 517         # textual hashes are O.K.
 518         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 519                 return $input;
 520         }
 521         # it must be correct pathname
 522         $input = validate_pathname($input)
 523                 or return undef;
 524         # restrictions on ref name according to git-check-ref-format
 525         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 526                 return undef;
 527         }
 528         return $input;
 529 }
 530
 531 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 532 sub to_utf8 {
 533         my $str = shift;
 534         return decode("utf8", $str, Encode::FB_DEFAULT);
 535 }
 536
 537 # quote unsafe chars, but keep the slash, even when it's not
 538 # correct, but quoted slashes look too horrible in bookmarks
 539 sub esc_param {
 540         my $str = shift;
 541         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 542         $str =~ s/\+/%2B/g;
 543         $str =~ s/ /\+/g;
 544         return $str;
 545 }
 546
 547 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 548 sub esc_url {
 549         my $str = shift;
 550         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 551         $str =~ s/\+/%2B/g;
 552         $str =~ s/ /\+/g;
 553         return $str;
 554 }
 555
 556 # replace invalid utf8 character with SUBSTITUTION sequence
 557 sub esc_html {
 558         my $str = shift;
 559         $str = to_utf8($str);
 560         $str = escapeHTML($str);
 561         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 562         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 563         return $str;
 564 }
 565
 566 # git may return quoted and escaped filenames
 567 sub unquote {
 568         my $str = shift;
 569         if ($str =~ m/^"(.*)"$/) {
 570                 $str = $1;
 571                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 572         }
 573         return $str;
 574 }
 575
 576 # escape tabs (convert tabs to spaces)
 577 sub untabify {
 578         my $line = shift;
 579
 580         while ((my $pos = index($line, "\t")) != -1) {
 581                 if (my $count = (8 - ($pos % 8))) {
 582                         my $spaces = ' ' x $count;
 583                         $line =~ s/\t/$spaces/;
 584                 }
 585         }
 586
 587         return $line;
 588 }
 589
 590 sub project_in_list {
 591         my $project = shift;
 592         my @list = git_get_projects_list();
 593         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 594 }
 595
 596 ## ----------------------------------------------------------------------
 597 ## HTML aware string manipulation
 598
 599 sub chop_str {
 600         my $str = shift;
 601         my $len = shift;
 602         my $add_len = shift || 10;
 603
 604         # allow only $len chars, but don't cut a word if it would fit in $add_len
 605         # if it doesn't fit, cut it if it's still longer than the dots we would add
 606         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 607         my $body = $1;
 608         my $tail = $2;
 609         if (length($tail) > 4) {
 610                 $tail = " ...";
 611                 $body =~ s/&[^;]*$//; # remove chopped character entities
 612         }
 613         return "$body$tail";
 614 }
 615
 616 ## ----------------------------------------------------------------------
 617 ## functions returning short strings
 618
 619 # CSS class for given age value (in seconds)
 620 sub age_class {
 621         my $age = shift;
 622
 623         if ($age < 60*60*2) {
 624                 return "age0";
 625         } elsif ($age < 60*60*24*2) {
 626                 return "age1";
 627         } else {
 628                 return "age2";
 629         }
 630 }
 631
 632 # convert age in seconds to "nn units ago" string
 633 sub age_string {
 634         my $age = shift;
 635         my $age_str;
 636
 637         if ($age > 60*60*24*365*2) {
 638                 $age_str = (int $age/60/60/24/365);
 639                 $age_str .= " years ago";
 640         } elsif ($age > 60*60*24*(365/12)*2) {
 641                 $age_str = int $age/60/60/24/(365/12);
 642                 $age_str .= " months ago";
 643         } elsif ($age > 60*60*24*7*2) {
 644                 $age_str = int $age/60/60/24/7;
 645                 $age_str .= " weeks ago";
 646         } elsif ($age > 60*60*24*2) {
 647                 $age_str = int $age/60/60/24;
 648                 $age_str .= " days ago";
 649         } elsif ($age > 60*60*2) {
 650                 $age_str = int $age/60/60;
 651                 $age_str .= " hours ago";
 652         } elsif ($age > 60*2) {
 653                 $age_str = int $age/60;
 654                 $age_str .= " min ago";
 655         } elsif ($age > 2) {
 656                 $age_str = int $age;
 657                 $age_str .= " sec ago";
 658         } else {
 659                 $age_str .= " right now";
 660         }
 661         return $age_str;
 662 }
 663
 664 # convert file mode in octal to symbolic file mode string
 665 sub mode_str {
 666         my $mode = oct shift;
 667
 668         if (S_ISDIR($mode & S_IFMT)) {
 669                 return 'drwxr-xr-x';
 670         } elsif (S_ISLNK($mode)) {
 671                 return 'lrwxrwxrwx';
 672         } elsif (S_ISREG($mode)) {
 673                 # git cares only about the executable bit
 674                 if ($mode & S_IXUSR) {
 675                         return '-rwxr-xr-x';
 676                 } else {
 677                         return '-rw-r--r--';
 678                 };
 679         } else {
 680                 return '----------';
 681         }
 682 }
 683
 684 # convert file mode in octal to file type string
 685 sub file_type {
 686         my $mode = shift;
 687
 688         if ($mode !~ m/^[0-7]+$/) {
 689                 return $mode;
 690         } else {
 691                 $mode = oct $mode;
 692         }
 693
 694         if (S_ISDIR($mode & S_IFMT)) {
 695                 return "directory";
 696         } elsif (S_ISLNK($mode)) {
 697                 return "symlink";
 698         } elsif (S_ISREG($mode)) {
 699                 return "file";
 700         } else {
 701                 return "unknown";
 702         }
 703 }
 704
 705 ## ----------------------------------------------------------------------
 706 ## functions returning short HTML fragments, or transforming HTML fragments
 707 ## which don't beling to other sections
 708
 709 # format line of commit message or tag comment
 710 sub format_log_line_html {
 711         my $line = shift;
 712
 713         $line = esc_html($line);
 714         $line =~ s/ /&nbsp;/g;
 715         if ($line =~ m/([0-9a-fA-F]{40})/) {
 716                 my $hash_text = $1;
 717                 if (git_get_type($hash_text) eq "commit") {
 718                         my $link =
 719                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 720                                         -class => "text"}, $hash_text);
 721                         $line =~ s/$hash_text/$link/;
 722                 }
 723         }
 724         return $line;
 725 }
 726
 727 # format marker of refs pointing to given object
 728 sub format_ref_marker {
 729         my ($refs, $id) = @_;
 730         my $markers = '';
 731
 732         if (defined $refs->{$id}) {
 733                 foreach my $ref (@{$refs->{$id}}) {
 734                         my ($type, $name) = qw();
 735                         # e.g. tags/v2.6.11 or heads/next
 736                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 737                                 $type = $1;
 738                                 $name = $2;
 739                         } else {
 740                                 $type = "ref";
 741                                 $name = $ref;
 742                         }
 743
 744                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 745                 }
 746         }
 747
 748         if ($markers) {
 749                 return ' <span class="refs">'. $markers . '</span>';
 750         } else {
 751                 return "";
 752         }
 753 }
 754
 755 # format, perhaps shortened and with markers, title line
 756 sub format_subject_html {
 757         my ($long, $short, $href, $extra) = @_;
 758         $extra = '' unless defined($extra);
 759
 760         if (length($short) < length($long)) {
 761                 return $cgi->a({-href => $href, -class => "list subject",
 762                                 -title => to_utf8($long)},
 763                        esc_html($short) . $extra);
 764         } else {
 765                 return $cgi->a({-href => $href, -class => "list subject"},
 766                        esc_html($long)  . $extra);
 767         }
 768 }
 769
 770 sub format_diff_line {
 771         my $line = shift;
 772         my $char = substr($line, 0, 1);
 773         my $diff_class = "";
 774
 775         chomp $line;
 776
 777         if ($char eq '+') {
 778                 $diff_class = " add";
 779         } elsif ($char eq "-") {
 780                 $diff_class = " rem";
 781         } elsif ($char eq "@") {
 782                 $diff_class = " chunk_header";
 783         } elsif ($char eq "\\") {
 784                 $diff_class = " incomplete";
 785         }
 786         $line = untabify($line);
 787         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 788 }
 789
 790 ## ----------------------------------------------------------------------
 791 ## git utility subroutines, invoking git commands
 792
 793 # returns path to the core git executable and the --git-dir parameter as list
 794 sub git_cmd {
 795         return $GIT, '--git-dir='.$git_dir;
 796 }
 797
 798 # returns path to the core git executable and the --git-dir parameter as string
 799 sub git_cmd_str {
 800         return join(' ', git_cmd());
 801 }
 802
 803 # get HEAD ref of given project as hash
 804 sub git_get_head_hash {
 805         my $project = shift;
 806         my $o_git_dir = $git_dir;
 807         my $retval = undef;
 808         $git_dir = "$projectroot/$project";
 809         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 810                 my $head = <$fd>;
 811                 close $fd;
 812                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 813                         $retval = $1;
 814                 }
 815         }
 816         if (defined $o_git_dir) {
 817                 $git_dir = $o_git_dir;
 818         }
 819         return $retval;
 820 }
 821
 822 # get type of given object
 823 sub git_get_type {
 824         my $hash = shift;
 825
 826         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 827         my $type = <$fd>;
 828         close $fd or return;
 829         chomp $type;
 830         return $type;
 831 }
 832
 833 sub git_get_project_config {
 834         my ($key, $type) = @_;
 835
 836         return unless ($key);
 837         $key =~ s/^gitweb\.//;
 838         return if ($key =~ m/\W/);
 839
 840         my @x = (git_cmd(), 'repo-config');
 841         if (defined $type) { push @x, $type; }
 842         push @x, "--get";
 843         push @x, "gitweb.$key";
 844         my $val = qx(@x);
 845         chomp $val;
 846         return ($val);
 847 }
 848
 849 # get hash of given path at given ref
 850 sub git_get_hash_by_path {
 851         my $base = shift;
 852         my $path = shift || return undef;
 853         my $type = shift;
 854
 855         $path =~ s,/+$,,;
 856
 857         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 858                 or die_error(undef, "Open git-ls-tree failed");
 859         my $line = <$fd>;
 860         close $fd or return undef;
 861
 862         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 863         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
 864         if (defined $type && $type ne $2) {
 865                 # type doesn't match
 866                 return undef;
 867         }
 868         return $3;
 869 }
 870
 871 ## ......................................................................
 872 ## git utility functions, directly accessing git repository
 873
 874 sub git_get_project_description {
 875         my $path = shift;
 876
 877         open my $fd, "$projectroot/$path/description" or return undef;
 878         my $descr = <$fd>;
 879         close $fd;
 880         chomp $descr;
 881         return $descr;
 882 }
 883
 884 sub git_get_project_url_list {
 885         my $path = shift;
 886
 887         open my $fd, "$projectroot/$path/cloneurl" or return;
 888         my @git_project_url_list = map { chomp; $_ } <$fd>;
 889         close $fd;
 890
 891         return wantarray ? @git_project_url_list : \@git_project_url_list;
 892 }
 893
 894 sub git_get_projects_list {
 895         my @list;
 896
 897         if (-d $projects_list) {
 898                 # search in directory
 899                 my $dir = $projects_list;
 900                 my $pfxlen = length("$dir");
 901
 902                 File::Find::find({
 903                         follow_fast => 1, # follow symbolic links
 904                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 905                         wanted => sub {
 906                                 # skip project-list toplevel, if we get it.
 907                                 return if (m!^[/.]$!);
 908                                 # only directories can be git repositories
 909                                 return unless (-d $_);
 910
 911                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 912                                 # we check related file in $projectroot
 913                                 if (check_export_ok("$projectroot/$subdir")) {
 914                                         push @list, { path => $subdir };
 915                                         $File::Find::prune = 1;
 916                                 }
 917                         },
 918                 }, "$dir");
 919
 920         } elsif (-f $projects_list) {
 921                 # read from file(url-encoded):
 922                 # 'git%2Fgit.git Linus+Torvalds'
 923                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 924                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 925                 open my ($fd), $projects_list or return;
 926                 while (my $line = <$fd>) {
 927                         chomp $line;
 928                         my ($path, $owner) = split ' ', $line;
 929                         $path = unescape($path);
 930                         $owner = unescape($owner);
 931                         if (!defined $path) {
 932                                 next;
 933                         }
 934                         if (check_export_ok("$projectroot/$path")) {
 935                                 my $pr = {
 936                                         path => $path,
 937                                         owner => to_utf8($owner),
 938                                 };
 939                                 push @list, $pr
 940                         }
 941                 }
 942                 close $fd;
 943         }
 944         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 945         return @list;
 946 }
 947
 948 sub git_get_project_owner {
 949         my $project = shift;
 950         my $owner;
 951
 952         return undef unless $project;
 953
 954         # read from file (url-encoded):
 955         # 'git%2Fgit.git Linus+Torvalds'
 956         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 957         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 958         if (-f $projects_list) {
 959                 open (my $fd , $projects_list);
 960                 while (my $line = <$fd>) {
 961                         chomp $line;
 962                         my ($pr, $ow) = split ' ', $line;
 963                         $pr = unescape($pr);
 964                         $ow = unescape($ow);
 965                         if ($pr eq $project) {
 966                                 $owner = to_utf8($ow);
 967                                 last;
 968                         }
 969                 }
 970                 close $fd;
 971         }
 972         if (!defined $owner) {
 973                 $owner = get_file_owner("$projectroot/$project");
 974         }
 975
 976         return $owner;
 977 }
 978
 979 sub git_get_last_activity {
 980         my ($path) = @_;
 981         my $fd;
 982
 983         $git_dir = "$projectroot/$path";
 984         open($fd, "-|", git_cmd(), 'for-each-ref',
 985              '--format=%(refname) %(committer)',
 986              '--sort=-committerdate',
 987              'refs/heads') or return;
 988         my $most_recent = <$fd>;
 989         close $fd or return;
 990         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
 991                 my $timestamp = $1;
 992                 my $age = time - $timestamp;
 993                 return ($age, age_string($age));
 994         }
 995 }
 996
 997 sub git_get_references {
 998         my $type = shift || "";
 999         my %refs;
1000         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
1001         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
1002         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1003                 or return;
1004
1005         while (my $line = <$fd>) {
1006                 chomp $line;
1007                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
1008                         if (defined $refs{$1}) {
1009                                 push @{$refs{$1}}, $2;
1010                         } else {
1011                                 $refs{$1} = [ $2 ];
1012                         }
1013                 }
1014         }
1015         close $fd or return;
1016         return \%refs;
1017 }
1018
1019 sub git_get_rev_name_tags {
1020         my $hash = shift || return undef;
1021
1022         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1023                 or return;
1024         my $name_rev = <$fd>;
1025         close $fd;
1026
1027         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1028                 return $1;
1029         } else {
1030                 # catches also '$hash undefined' output
1031                 return undef;
1032         }
1033 }
1034
1035 ## ----------------------------------------------------------------------
1036 ## parse to hash functions
1037
1038 sub parse_date {
1039         my $epoch = shift;
1040         my $tz = shift || "-0000";
1041
1042         my %date;
1043         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1044         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1045         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1046         $date{'hour'} = $hour;
1047         $date{'minute'} = $min;
1048         $date{'mday'} = $mday;
1049         $date{'day'} = $days[$wday];
1050         $date{'month'} = $months[$mon];
1051         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1052                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1053         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1054                              $mday, $months[$mon], $hour ,$min;
1055
1056         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1057         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1058         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1059         $date{'hour_local'} = $hour;
1060         $date{'minute_local'} = $min;
1061         $date{'tz_local'} = $tz;
1062         $date{'iso-tz'} = sprintf ("%04d-%02d-%02d %02d:%02d:%02d %s",
1063                                    1900+$year, $mon+1, $mday,
1064                                    $hour, $min, $sec, $tz);
1065         return %date;
1066 }
1067
1068 sub parse_tag {
1069         my $tag_id = shift;
1070         my %tag;
1071         my @comment;
1072
1073         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1074         $tag{'id'} = $tag_id;
1075         while (my $line = <$fd>) {
1076                 chomp $line;
1077                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1078                         $tag{'object'} = $1;
1079                 } elsif ($line =~ m/^type (.+)$/) {
1080                         $tag{'type'} = $1;
1081                 } elsif ($line =~ m/^tag (.+)$/) {
1082                         $tag{'name'} = $1;
1083                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1084                         $tag{'author'} = $1;
1085                         $tag{'epoch'} = $2;
1086                         $tag{'tz'} = $3;
1087                 } elsif ($line =~ m/--BEGIN/) {
1088                         push @comment, $line;
1089                         last;
1090                 } elsif ($line eq "") {
1091                         last;
1092                 }
1093         }
1094         push @comment, <$fd>;
1095         $tag{'comment'} = \@comment;
1096         close $fd or return;
1097         if (!defined $tag{'name'}) {
1098                 return
1099         };
1100         return %tag
1101 }
1102
1103 sub parse_commit {
1104         my $commit_id = shift;
1105         my $commit_text = shift;
1106
1107         my @commit_lines;
1108         my %co;
1109
1110         if (defined $commit_text) {
1111                 @commit_lines = @$commit_text;
1112         } else {
1113                 local $/ = "\0";
1114                 open my $fd, "-|", git_cmd(), "rev-list",
1115                         "--header", "--parents", "--max-count=1",
1116                         $commit_id, "--"
1117                         or return;
1118                 @commit_lines = split '\n', <$fd>;
1119                 close $fd or return;
1120                 pop @commit_lines;
1121         }
1122         my $header = shift @commit_lines;
1123         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1124                 return;
1125         }
1126         ($co{'id'}, my @parents) = split ' ', $header;
1127         $co{'parents'} = \@parents;
1128         $co{'parent'} = $parents[0];
1129         while (my $line = shift @commit_lines) {
1130                 last if $line eq "\n";
1131                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1132                         $co{'tree'} = $1;
1133                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1134                         $co{'author'} = $1;
1135                         $co{'author_epoch'} = $2;
1136                         $co{'author_tz'} = $3;
1137                         if ($co{'author'} =~ m/^([^<]+) </) {
1138                                 $co{'author_name'} = $1;
1139                         } else {
1140                                 $co{'author_name'} = $co{'author'};
1141                         }
1142                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1143                         $co{'committer'} = $1;
1144                         $co{'committer_epoch'} = $2;
1145                         $co{'committer_tz'} = $3;
1146                         $co{'committer_name'} = $co{'committer'};
1147                         $co{'committer_name'} =~ s/ <.*//;
1148                 }
1149         }
1150         if (!defined $co{'tree'}) {
1151                 return;
1152         };
1153
1154         foreach my $title (@commit_lines) {
1155                 $title =~ s/^    //;
1156                 if ($title ne "") {
1157                         $co{'title'} = chop_str($title, 80, 5);
1158                         # remove leading stuff of merges to make the interesting part visible
1159                         if (length($title) > 50) {
1160                                 $title =~ s/^Automatic //;
1161                                 $title =~ s/^merge (of|with) /Merge ... /i;
1162                                 if (length($title) > 50) {
1163                                         $title =~ s/(http|rsync):\/\///;
1164                                 }
1165                                 if (length($title) > 50) {
1166                                         $title =~ s/(master|www|rsync)\.//;
1167                                 }
1168                                 if (length($title) > 50) {
1169                                         $title =~ s/kernel.org:?//;
1170                                 }
1171                                 if (length($title) > 50) {
1172                                         $title =~ s/\/pub\/scm//;
1173                                 }
1174                         }
1175                         $co{'title_short'} = chop_str($title, 50, 5);
1176                         last;
1177                 }
1178         }
1179         if ($co{'title'} eq "") {
1180                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1181         }
1182         # remove added spaces
1183         foreach my $line (@commit_lines) {
1184                 $line =~ s/^    //;
1185         }
1186         $co{'comment'} = \@commit_lines;
1187
1188         my $age = time - $co{'committer_epoch'};
1189         $co{'age'} = $age;
1190         $co{'age_string'} = age_string($age);
1191         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1192         if ($age > 60*60*24*7*2) {
1193                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1194                 $co{'age_string_age'} = $co{'age_string'};
1195         } else {
1196                 $co{'age_string_date'} = $co{'age_string'};
1197                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1198         }
1199         return %co;
1200 }
1201
1202 # parse ref from ref_file, given by ref_id, with given type
1203 sub parse_ref {
1204         my $ref_file = shift;
1205         my $ref_id = shift;
1206         my $type = shift || git_get_type($ref_id);
1207         my %ref_item;
1208
1209         $ref_item{'type'} = $type;
1210         $ref_item{'id'} = $ref_id;
1211         $ref_item{'epoch'} = 0;
1212         $ref_item{'age'} = "unknown";
1213         if ($type eq "tag") {
1214                 my %tag = parse_tag($ref_id);
1215                 $ref_item{'comment'} = $tag{'comment'};
1216                 if ($tag{'type'} eq "commit") {
1217                         my %co = parse_commit($tag{'object'});
1218                         $ref_item{'epoch'} = $co{'committer_epoch'};
1219                         $ref_item{'age'} = $co{'age_string'};
1220                 } elsif (defined($tag{'epoch'})) {
1221                         my $age = time - $tag{'epoch'};
1222                         $ref_item{'epoch'} = $tag{'epoch'};
1223                         $ref_item{'age'} = age_string($age);
1224                 }
1225                 $ref_item{'reftype'} = $tag{'type'};
1226                 $ref_item{'name'} = $tag{'name'};
1227                 $ref_item{'refid'} = $tag{'object'};
1228         } elsif ($type eq "commit"){
1229                 my %co = parse_commit($ref_id);
1230                 $ref_item{'reftype'} = "commit";
1231                 $ref_item{'name'} = $ref_file;
1232                 $ref_item{'title'} = $co{'title'};
1233                 $ref_item{'refid'} = $ref_id;
1234                 $ref_item{'epoch'} = $co{'committer_epoch'};
1235                 $ref_item{'age'} = $co{'age_string'};
1236         } else {
1237                 $ref_item{'reftype'} = $type;
1238                 $ref_item{'name'} = $ref_file;
1239                 $ref_item{'refid'} = $ref_id;
1240         }
1241
1242         return %ref_item;
1243 }
1244
1245 # parse line of git-diff-tree "raw" output
1246 sub parse_difftree_raw_line {
1247         my $line = shift;
1248         my %res;
1249
1250         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1251         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1252         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1253                 $res{'from_mode'} = $1;
1254                 $res{'to_mode'} = $2;
1255                 $res{'from_id'} = $3;
1256                 $res{'to_id'} = $4;
1257                 $res{'status'} = $5;
1258                 $res{'similarity'} = $6;
1259                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1260                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1261                 } else {
1262                         $res{'file'} = unquote($7);
1263                 }
1264         }
1265         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1266         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1267                 $res{'commit'} = $1;
1268         }
1269
1270         return wantarray ? %res : \%res;
1271 }
1272
1273 # parse line of git-ls-tree output
1274 sub parse_ls_tree_line ($;%) {
1275         my $line = shift;
1276         my %opts = @_;
1277         my %res;
1278
1279         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1280         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1281
1282         $res{'mode'} = $1;
1283         $res{'type'} = $2;
1284         $res{'hash'} = $3;
1285         if ($opts{'-z'}) {
1286                 $res{'name'} = $4;
1287         } else {
1288                 $res{'name'} = unquote($4);
1289         }
1290
1291         return wantarray ? %res : \%res;
1292 }
1293
1294 ## ......................................................................
1295 ## parse to array of hashes functions
1296
1297 sub git_get_heads_list {
1298         my $limit = shift;
1299         my @headslist;
1300
1301         open my $fd, '-|', git_cmd(), 'for-each-ref',
1302                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1303                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1304                 'refs/heads'
1305                 or return;
1306         while (my $line = <$fd>) {
1307                 my %ref_item;
1308
1309                 chomp $line;
1310                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1311                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1312                 my ($committer, $epoch, $tz) =
1313                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1314                 $name =~ s!^refs/heads/!!;
1315
1316                 $ref_item{'name'}  = $name;
1317                 $ref_item{'id'}    = $hash;
1318                 $ref_item{'title'} = $title || '(no commit message)';
1319                 $ref_item{'epoch'} = $epoch;
1320                 if ($epoch) {
1321                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1322                 } else {
1323                         $ref_item{'age'} = "unknown";
1324                 }
1325
1326                 push @headslist, \%ref_item;
1327         }
1328         close $fd;
1329
1330         return wantarray ? @headslist : \@headslist;
1331 }
1332
1333 sub git_get_tags_list {
1334         my $limit = shift;
1335         my @tagslist;
1336
1337         open my $fd, '-|', git_cmd(), 'for-each-ref',
1338                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1339                 '--format=%(objectname) %(objecttype) %(refname) '.
1340                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1341                 'refs/tags'
1342                 or return;
1343         while (my $line = <$fd>) {
1344                 my %ref_item;
1345
1346                 chomp $line;
1347                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1348                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1349                 my ($creator, $epoch, $tz) =
1350                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1351                 $name =~ s!^refs/tags/!!;
1352
1353                 $ref_item{'type'} = $type;
1354                 $ref_item{'id'} = $id;
1355                 $ref_item{'name'} = $name;
1356                 if ($type eq "tag") {
1357                         $ref_item{'subject'} = $title;
1358                         $ref_item{'reftype'} = $reftype;
1359                         $ref_item{'refid'}   = $refid;
1360                 } else {
1361                         $ref_item{'reftype'} = $type;
1362                         $ref_item{'refid'}   = $id;
1363                 }
1364
1365                 if ($type eq "tag" || $type eq "commit") {
1366                         $ref_item{'epoch'} = $epoch;
1367                         if ($epoch) {
1368                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1369                         } else {
1370                                 $ref_item{'age'} = "unknown";
1371                         }
1372                 }
1373
1374                 push @tagslist, \%ref_item;
1375         }
1376         close $fd;
1377
1378         return wantarray ? @tagslist : \@tagslist;
1379 }
1380
1381 ## ----------------------------------------------------------------------
1382 ## filesystem-related functions
1383
1384 sub get_file_owner {
1385         my $path = shift;
1386
1387         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1388         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1389         if (!defined $gcos) {
1390                 return undef;
1391         }
1392         my $owner = $gcos;
1393         $owner =~ s/[,;].*$//;
1394         return to_utf8($owner);
1395 }
1396
1397 ## ......................................................................
1398 ## mimetype related functions
1399
1400 sub mimetype_guess_file {
1401         my $filename = shift;
1402         my $mimemap = shift;
1403         -r $mimemap or return undef;
1404
1405         my %mimemap;
1406         open(MIME, $mimemap) or return undef;
1407         while (<MIME>) {
1408                 next if m/^#/; # skip comments
1409                 my ($mime, $exts) = split(/\t+/);
1410                 if (defined $exts) {
1411                         my @exts = split(/\s+/, $exts);
1412                         foreach my $ext (@exts) {
1413                                 $mimemap{$ext} = $mime;
1414                         }
1415                 }
1416         }
1417         close(MIME);
1418
1419         $filename =~ /\.([^.]*)$/;
1420         return $mimemap{$1};
1421 }
1422
1423 sub mimetype_guess {
1424         my $filename = shift;
1425         my $mime;
1426         $filename =~ /\./ or return undef;
1427
1428         if ($mimetypes_file) {
1429                 my $file = $mimetypes_file;
1430                 if ($file !~ m!^/!) { # if it is relative path
1431                         # it is relative to project
1432                         $file = "$projectroot/$project/$file";
1433                 }
1434                 $mime = mimetype_guess_file($filename, $file);
1435         }
1436         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1437         return $mime;
1438 }
1439
1440 sub blob_mimetype {
1441         my $fd = shift;
1442         my $filename = shift;
1443
1444         if ($filename) {
1445                 my $mime = mimetype_guess($filename);
1446                 $mime and return $mime;
1447         }
1448
1449         # just in case
1450         return $default_blob_plain_mimetype unless $fd;
1451
1452         if (-T $fd) {
1453                 return 'text/plain' .
1454                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1455         } elsif (! $filename) {
1456                 return 'application/octet-stream';
1457         } elsif ($filename =~ m/\.png$/i) {
1458                 return 'image/png';
1459         } elsif ($filename =~ m/\.gif$/i) {
1460                 return 'image/gif';
1461         } elsif ($filename =~ m/\.jpe?g$/i) {
1462                 return 'image/jpeg';
1463         } else {
1464                 return 'application/octet-stream';
1465         }
1466 }
1467
1468 ## ======================================================================
1469 ## functions printing HTML: header, footer, error page
1470
1471 sub git_header_html {
1472         my $status = shift || "200 OK";
1473         my $expires = shift;
1474
1475         my $title = "$site_name";
1476         if (defined $project) {
1477                 $title .= " - $project";
1478                 if (defined $action) {
1479                         $title .= "/$action";
1480                         if (defined $file_name) {
1481                                 $title .= " - " . esc_html($file_name);
1482                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1483                                         $title .= "/";
1484                                 }
1485                         }
1486                 }
1487         }
1488         my $content_type;
1489         # require explicit support from the UA if we are to send the page as
1490         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1491         # we have to do this because MSIE sometimes globs '*/*', pretending to
1492         # support xhtml+xml but choking when it gets what it asked for.
1493         if (defined $cgi->http('HTTP_ACCEPT') &&
1494             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1495             $cgi->Accept('application/xhtml+xml') != 0) {
1496                 $content_type = 'application/xhtml+xml';
1497         } else {
1498                 $content_type = 'text/html';
1499         }
1500         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1501                            -status=> $status, -expires => $expires);
1502         print <<EOF;
1503 <?xml version="1.0" encoding="utf-8"?>
1504 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1505 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1506 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1507 <!-- git core binaries version $git_version -->
1508 <head>
1509 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1510 <meta name="generator" content="gitweb/$version git/$git_version"/>
1511 <meta name="robots" content="index, nofollow"/>
1512 <title>$title</title>
1513 EOF
1514 # print out each stylesheet that exist
1515         if (defined $stylesheet) {
1516 #provides backwards capability for those people who define style sheet in a config file
1517                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1518         } else {
1519                 foreach my $stylesheet (@stylesheets) {
1520                         next unless $stylesheet;
1521                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1522                 }
1523         }
1524         if (defined $project) {
1525                 printf('<link rel="alternate" title="%s log" '.
1526                        'href="%s" type="application/rss+xml"/>'."\n",
1527                        esc_param($project), href(action=>"rss"));
1528         } else {
1529                 printf('<link rel="alternate" title="%s projects list" '.
1530                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1531                        $site_name, href(project=>undef, action=>"project_index"));
1532                 printf('<link rel="alternate" title="%s projects logs" '.
1533                        'href="%s" type="text/x-opml"/>'."\n",
1534                        $site_name, href(project=>undef, action=>"opml"));
1535         }
1536         if (defined $favicon) {
1537                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1538         }
1539
1540         print "</head>\n" .
1541               "<body>\n";
1542
1543         if (-f $site_header) {
1544                 open (my $fd, $site_header);
1545                 print <$fd>;
1546                 close $fd;
1547         }
1548
1549         print "<div class=\"page_header\">\n" .
1550               $cgi->a({-href => esc_url($logo_url),
1551                        -title => $logo_label},
1552                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1553         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1554         if (defined $project) {
1555                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1556                 if (defined $action) {
1557                         print " / $action";
1558                 }
1559                 print "\n";
1560                 if (!defined $searchtext) {
1561                         $searchtext = "";
1562                 }
1563                 my $search_hash;
1564                 if (defined $hash_base) {
1565                         $search_hash = $hash_base;
1566                 } elsif (defined $hash) {
1567                         $search_hash = $hash;
1568                 } else {
1569                         $search_hash = "HEAD";
1570                 }
1571                 $cgi->param("a", "search");
1572                 $cgi->param("h", $search_hash);
1573                 $cgi->param("p", $project);
1574                 print $cgi->startform(-method => "get", -action => $my_uri) .
1575                       "<div class=\"search\">\n" .
1576                       $cgi->hidden(-name => "p") . "\n" .
1577                       $cgi->hidden(-name => "a") . "\n" .
1578                       $cgi->hidden(-name => "h") . "\n" .
1579                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1580                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1581                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1582                       " search:\n",
1583                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1584                       "</div>" .
1585                       $cgi->end_form() . "\n";
1586         }
1587         print "</div>\n";
1588 }
1589
1590 sub git_footer_html {
1591         print "<div class=\"page_footer\">\n";
1592         if (defined $project) {
1593                 my $descr = git_get_project_description($project);
1594                 if (defined $descr) {
1595                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1596                 }
1597                 print $cgi->a({-href => href(action=>"rss"),
1598                               -class => "rss_logo"}, "RSS") . "\n";
1599         } else {
1600                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1601                               -class => "rss_logo"}, "OPML") . " ";
1602                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1603                               -class => "rss_logo"}, "TXT") . "\n";
1604         }
1605         print "</div>\n" ;
1606
1607         if (-f $site_footer) {
1608                 open (my $fd, $site_footer);
1609                 print <$fd>;
1610                 close $fd;
1611         }
1612
1613         print "</body>\n" .
1614               "</html>";
1615 }
1616
1617 sub die_error {
1618         my $status = shift || "403 Forbidden";
1619         my $error = shift || "Malformed query, file missing or permission denied";
1620
1621         git_header_html($status);
1622         print <<EOF;
1623 <div class="page_body">
1624 <br /><br />
1625 $status - $error
1626 <br />
1627 </div>
1628 EOF
1629         git_footer_html();
1630         exit;
1631 }
1632
1633 ## ----------------------------------------------------------------------
1634 ## functions printing or outputting HTML: navigation
1635
1636 sub git_print_page_nav {
1637         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1638         $extra = '' if !defined $extra; # pager or formats
1639
1640         my @navs = qw(summary shortlog log commit commitdiff tree);
1641         if ($suppress) {
1642                 @navs = grep { $_ ne $suppress } @navs;
1643         }
1644
1645         my %arg = map { $_ => {action=>$_} } @navs;
1646         if (defined $head) {
1647                 for (qw(commit commitdiff)) {
1648                         $arg{$_}{hash} = $head;
1649                 }
1650                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1651                         for (qw(shortlog log)) {
1652                                 $arg{$_}{hash} = $head;
1653                         }
1654                 }
1655         }
1656         $arg{tree}{hash} = $treehead if defined $treehead;
1657         $arg{tree}{hash_base} = $treebase if defined $treebase;
1658
1659         print "<div class=\"page_nav\">\n" .
1660                 (join " | ",
1661                  map { $_ eq $current ?
1662                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1663                  } @navs);
1664         print "<br/>\n$extra<br/>\n" .
1665               "</div>\n";
1666 }
1667
1668 sub format_paging_nav {
1669         my ($action, $hash, $head, $page, $nrevs) = @_;
1670         my $paging_nav;
1671
1672
1673         if ($hash ne $head || $page) {
1674                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1675         } else {
1676                 $paging_nav .= "HEAD";
1677         }
1678
1679         if ($page > 0) {
1680                 $paging_nav .= " &sdot; " .
1681                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1682                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1683         } else {
1684                 $paging_nav .= " &sdot; prev";
1685         }
1686
1687         if ($nrevs >= (100 * ($page+1)-1)) {
1688                 $paging_nav .= " &sdot; " .
1689                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1690                                  -accesskey => "n", -title => "Alt-n"}, "next");
1691         } else {
1692                 $paging_nav .= " &sdot; next";
1693         }
1694
1695         return $paging_nav;
1696 }
1697
1698 ## ......................................................................
1699 ## functions printing or outputting HTML: div
1700
1701 sub git_print_header_div {
1702         my ($action, $title, $hash, $hash_base) = @_;
1703         my %args = ();
1704
1705         $args{action} = $action;
1706         $args{hash} = $hash if $hash;
1707         $args{hash_base} = $hash_base if $hash_base;
1708
1709         print "<div class=\"header\">\n" .
1710               $cgi->a({-href => href(%args), -class => "title"},
1711               $title ? $title : $action) .
1712               "\n</div>\n";
1713 }
1714
1715 #sub git_print_authorship (\%) {
1716 sub git_print_authorship {
1717         my $co = shift;
1718
1719         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1720         print "<div class=\"author_date\">" .
1721               esc_html($co->{'author_name'}) .
1722               " [$ad{'rfc2822'}";
1723         if ($ad{'hour_local'} < 6) {
1724                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1725                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1726         } else {
1727                 printf(" (%02d:%02d %s)",
1728                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1729         }
1730         print "]</div>\n";
1731 }
1732
1733 sub git_print_page_path {
1734         my $name = shift;
1735         my $type = shift;
1736         my $hb = shift;
1737
1738
1739         print "<div class=\"page_path\">";
1740         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1741                       -title => 'tree root'}, "[$project]");
1742         print " / ";
1743         if (defined $name) {
1744                 my @dirname = split '/', $name;
1745                 my $basename = pop @dirname;
1746                 my $fullname = '';
1747
1748                 foreach my $dir (@dirname) {
1749                         $fullname .= ($fullname ? '/' : '') . $dir;
1750                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1751                                                      hash_base=>$hb),
1752                                       -title => $fullname}, esc_html($dir));
1753                         print " / ";
1754                 }
1755                 if (defined $type && $type eq 'blob') {
1756                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1757                                                      hash_base=>$hb),
1758                                       -title => $name}, esc_html($basename));
1759                 } elsif (defined $type && $type eq 'tree') {
1760                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1761                                                      hash_base=>$hb),
1762                                       -title => $name}, esc_html($basename));
1763                         print " / ";
1764                 } else {
1765                         print esc_html($basename);
1766                 }
1767         }
1768         print "<br/></div>\n";
1769 }
1770
1771 # sub git_print_log (\@;%) {
1772 sub git_print_log ($;%) {
1773         my $log = shift;
1774         my %opts = @_;
1775
1776         if ($opts{'-remove_title'}) {
1777                 # remove title, i.e. first line of log
1778                 shift @$log;
1779         }
1780         # remove leading empty lines
1781         while (defined $log->[0] && $log->[0] eq "") {
1782                 shift @$log;
1783         }
1784
1785         # print log
1786         my $signoff = 0;
1787         my $empty = 0;
1788         foreach my $line (@$log) {
1789                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1790                         $signoff = 1;
1791                         $empty = 0;
1792                         if (! $opts{'-remove_signoff'}) {
1793                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1794                                 next;
1795                         } else {
1796                                 # remove signoff lines
1797                                 next;
1798                         }
1799                 } else {
1800                         $signoff = 0;
1801                 }
1802
1803                 # print only one empty line
1804                 # do not print empty line after signoff
1805                 if ($line eq "") {
1806                         next if ($empty || $signoff);
1807                         $empty = 1;
1808                 } else {
1809                         $empty = 0;
1810                 }
1811
1812                 print format_log_line_html($line) . "<br/>\n";
1813         }
1814
1815         if ($opts{'-final_empty_line'}) {
1816                 # end with single empty line
1817                 print "<br/>\n" unless $empty;
1818         }
1819 }
1820
1821 # print tree entry (row of git_tree), but without encompassing <tr> element
1822 sub git_print_tree_entry {
1823         my ($t, $basedir, $hash_base, $have_blame) = @_;
1824
1825         my %base_key = ();
1826         $base_key{hash_base} = $hash_base if defined $hash_base;
1827
1828         # The format of a table row is: mode list link.  Where mode is
1829         # the mode of the entry, list is the name of the entry, an href,
1830         # and link is the action links of the entry.
1831
1832         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1833         if ($t->{'type'} eq "blob") {
1834                 print "<td class=\"list\">" .
1835                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1836                                                file_name=>"$basedir$t->{'name'}", %base_key),
1837                                 -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1838                 print "<td class=\"link\">";
1839                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1840                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1841                               "blob");
1842                 if ($have_blame) {
1843                         print " | " .
1844                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1845                                                            file_name=>"$basedir$t->{'name'}", %base_key)},
1846                                             "blame");
1847                 }
1848                 if (defined $hash_base) {
1849                         print " | " .
1850                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1851                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1852                                       "history");
1853                 }
1854                 print " | " .
1855                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1856                                                file_name=>"$basedir$t->{'name'}")},
1857                                 "raw");
1858                 print "</td>\n";
1859
1860         } elsif ($t->{'type'} eq "tree") {
1861                 print "<td class=\"list\">";
1862                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1863                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1864                               esc_html($t->{'name'}));
1865                 print "</td>\n";
1866                 print "<td class=\"link\">";
1867                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1868                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1869                               "tree");
1870                 if (defined $hash_base) {
1871                         print " | " .
1872                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1873                                                      file_name=>"$basedir$t->{'name'}")},
1874                                       "history");
1875                 }
1876                 print "</td>\n";
1877         }
1878 }
1879
1880 ## ......................................................................
1881 ## functions printing large fragments of HTML
1882
1883 sub git_difftree_body {
1884         my ($difftree, $hash, $parent) = @_;
1885
1886         print "<div class=\"list_head\">\n";
1887         if ($#{$difftree} > 10) {
1888                 print(($#{$difftree} + 1) . " files changed:\n");
1889         }
1890         print "</div>\n";
1891
1892         print "<table class=\"diff_tree\">\n";
1893         my $alternate = 1;
1894         my $patchno = 0;
1895         foreach my $line (@{$difftree}) {
1896                 my %diff = parse_difftree_raw_line($line);
1897
1898                 if ($alternate) {
1899                         print "<tr class=\"dark\">\n";
1900                 } else {
1901                         print "<tr class=\"light\">\n";
1902                 }
1903                 $alternate ^= 1;
1904
1905                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1906                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1907                 if ($diff{'to_mode'} ne ('0' x 6)) {
1908                         $to_mode_oct = oct $diff{'to_mode'};
1909                         if (S_ISREG($to_mode_oct)) { # only for regular file
1910                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1911                         }
1912                         $to_file_type = file_type($diff{'to_mode'});
1913                 }
1914                 if ($diff{'from_mode'} ne ('0' x 6)) {
1915                         $from_mode_oct = oct $diff{'from_mode'};
1916                         if (S_ISREG($to_mode_oct)) { # only for regular file
1917                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1918                         }
1919                         $from_file_type = file_type($diff{'from_mode'});
1920                 }
1921
1922                 if ($diff{'status'} eq "A") { # created
1923                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1924                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1925                         $mode_chng   .= "]</span>";
1926                         print "<td>";
1927                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1928                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1929                                       -class => "list"}, esc_html($diff{'file'}));
1930                         print "</td>\n";
1931                         print "<td>$mode_chng</td>\n";
1932                         print "<td class=\"link\">";
1933                         if ($action eq 'commitdiff') {
1934                                 # link to patch
1935                                 $patchno++;
1936                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1937                         }
1938                         print "</td>\n";
1939
1940                 } elsif ($diff{'status'} eq "D") { # deleted
1941                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1942                         print "<td>";
1943                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1944                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1945                                        -class => "list"}, esc_html($diff{'file'}));
1946                         print "</td>\n";
1947                         print "<td>$mode_chng</td>\n";
1948                         print "<td class=\"link\">";
1949                         if ($action eq 'commitdiff') {
1950                                 # link to patch
1951                                 $patchno++;
1952                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1953                                 print " | ";
1954                         }
1955                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1956                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1957                                       "blob") . " | ";
1958                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1959                                                      file_name=>$diff{'file'})},
1960                                       "blame") . " | ";
1961                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1962                                                      file_name=>$diff{'file'})},
1963                                       "history");
1964                         print "</td>\n";
1965
1966                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1967                         my $mode_chnge = "";
1968                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1969                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1970                                 if ($from_file_type != $to_file_type) {
1971                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1972                                 }
1973                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1974                                         if ($from_mode_str && $to_mode_str) {
1975                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1976                                         } elsif ($to_mode_str) {
1977                                                 $mode_chnge .= " mode: $to_mode_str";
1978                                         }
1979                                 }
1980                                 $mode_chnge .= "]</span>\n";
1981                         }
1982                         print "<td>";
1983                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1984                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1985                                       -class => "list"}, esc_html($diff{'file'}));
1986                         print "</td>\n";
1987                         print "<td>$mode_chnge</td>\n";
1988                         print "<td class=\"link\">";
1989                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1990                                 if ($action eq 'commitdiff') {
1991                                         # link to patch
1992                                         $patchno++;
1993                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1994                                 } else {
1995                                         print $cgi->a({-href => href(action=>"blobdiff",
1996                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1997                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1998                                                                      file_name=>$diff{'file'})},
1999                                                       "diff");
2000                                 }
2001                                 print " | ";
2002                         }
2003                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2004                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2005                                       "blob") . " | ";
2006                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2007                                                      file_name=>$diff{'file'})},
2008                                       "blame") . " | ";
2009                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2010                                                      file_name=>$diff{'file'})},
2011                                       "history");
2012                         print "</td>\n";
2013
2014                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2015                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2016                         my $nstatus = $status_name{$diff{'status'}};
2017                         my $mode_chng = "";
2018                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2019                                 # mode also for directories, so we cannot use $to_mode_str
2020                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2021                         }
2022                         print "<td>" .
2023                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2024                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2025                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
2026                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2027                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2028                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2029                                       -class => "list"}, esc_html($diff{'from_file'})) .
2030                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2031                               "<td class=\"link\">";
2032                         if ($diff{'to_id'} ne $diff{'from_id'}) {
2033                                 if ($action eq 'commitdiff') {
2034                                         # link to patch
2035                                         $patchno++;
2036                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
2037                                 } else {
2038                                         print $cgi->a({-href => href(action=>"blobdiff",
2039                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2040                                                                      hash_base=>$hash, hash_parent_base=>$parent,
2041                                                                      file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2042                                                       "diff");
2043                                 }
2044                                 print " | ";
2045                         }
2046                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2047                                                      hash_base=>$parent, file_name=>$diff{'from_file'})},
2048                                       "blob") . " | ";
2049                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2050                                                      file_name=>$diff{'from_file'})},
2051                                       "blame") . " | ";
2052                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2053                                                     file_name=>$diff{'from_file'})},
2054                                       "history");
2055                         print "</td>\n";
2056
2057                 } # we should not encounter Unmerged (U) or Unknown (X) status
2058                 print "</tr>\n";
2059         }
2060         print "</table>\n";
2061 }
2062
2063 sub git_patchset_body {
2064         my ($fd, $difftree, $hash, $hash_parent) = @_;
2065
2066         my $patch_idx = 0;
2067         my $in_header = 0;
2068         my $patch_found = 0;
2069         my $diffinfo;
2070
2071         print "<div class=\"patchset\">\n";
2072
2073         LINE:
2074         while (my $patch_line = <$fd>) {
2075                 chomp $patch_line;
2076
2077                 if ($patch_line =~ m/^diff /) { # "git diff" header
2078                         # beginning of patch (in patchset)
2079                         if ($patch_found) {
2080                                 # close previous patch
2081                                 print "</div>\n"; # class="patch"
2082                         } else {
2083                                 # first patch in patchset
2084                                 $patch_found = 1;
2085                         }
2086                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2087
2088                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2089                                 $diffinfo = $difftree->[$patch_idx];
2090                         } else {
2091                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2092                         }
2093                         $patch_idx++;
2094
2095                         # for now, no extended header, hence we skip empty patches
2096                         # companion to  next LINE if $in_header;
2097                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
2098                                 $in_header = 1;
2099                                 next LINE;
2100                         }
2101
2102                         if ($diffinfo->{'status'} eq "A") { # added
2103                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
2104                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2105                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2106                                               $diffinfo->{'to_id'}) . " (new)" .
2107                                       "</div>\n"; # class="diff_info"
2108
2109                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
2110                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
2111                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2112                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2113                                               $diffinfo->{'from_id'}) . " (deleted)" .
2114                                       "</div>\n"; # class="diff_info"
2115
2116                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
2117                                  $diffinfo->{'status'} eq "C" || # copied
2118                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
2119                                 print "<div class=\"diff_info\">" .
2120                                       file_type($diffinfo->{'from_mode'}) . ":" .
2121                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2122                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
2123                                               $diffinfo->{'from_id'}) .
2124                                       " -> " .
2125                                       file_type($diffinfo->{'to_mode'}) . ":" .
2126                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2127                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
2128                                               $diffinfo->{'to_id'});
2129                                 print "</div>\n"; # class="diff_info"
2130
2131                         } else { # modified, mode changed, ...
2132                                 print "<div class=\"diff_info\">" .
2133                                       file_type($diffinfo->{'from_mode'}) . ":" .
2134                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2135                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2136                                               $diffinfo->{'from_id'}) .
2137                                       " -> " .
2138                                       file_type($diffinfo->{'to_mode'}) . ":" .
2139                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2140                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2141                                               $diffinfo->{'to_id'});
2142                                 print "</div>\n"; # class="diff_info"
2143                         }
2144
2145                         #print "<div class=\"diff extended_header\">\n";
2146                         $in_header = 1;
2147                         next LINE;
2148                 } # start of patch in patchset
2149
2150
2151                 if ($in_header && $patch_line =~ m/^---/) {
2152                         #print "</div>\n"; # class="diff extended_header"
2153                         $in_header = 0;
2154
2155                         my $file = $diffinfo->{'from_file'};
2156                         $file  ||= $diffinfo->{'file'};
2157                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2158                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2159                                         -class => "list"}, esc_html($file));
2160                         $patch_line =~ s|a/.*$|a/$file|g;
2161                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2162
2163                         $patch_line = <$fd>;
2164                         chomp $patch_line;
2165
2166                         #$patch_line =~ m/^+++/;
2167                         $file    = $diffinfo->{'to_file'};
2168                         $file  ||= $diffinfo->{'file'};
2169                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2170                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2171                                         -class => "list"}, esc_html($file));
2172                         $patch_line =~ s|b/.*|b/$file|g;
2173                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2174
2175                         next LINE;
2176                 }
2177                 next LINE if $in_header;
2178
2179                 print format_diff_line($patch_line);
2180         }
2181         print "</div>\n" if $patch_found; # class="patch"
2182
2183         print "</div>\n"; # class="patchset"
2184 }
2185
2186 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2187
2188 sub git_shortlog_body {
2189         # uses global variable $project
2190         my ($revlist, $from, $to, $refs, $extra) = @_;
2191
2192         $from = 0 unless defined $from;
2193         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2194
2195         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2196         my $alternate = 1;
2197         for (my $i = $from; $i <= $to; $i++) {
2198                 my $commit = $revlist->[$i];
2199                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2200                 my $ref = format_ref_marker($refs, $commit);
2201                 my %co = parse_commit($commit);
2202                 if ($alternate) {
2203                         print "<tr class=\"dark\">\n";
2204                 } else {
2205                         print "<tr class=\"light\">\n";
2206                 }
2207                 $alternate ^= 1;
2208                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2209                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2210                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2211                       "<td>";
2212                 print format_subject_html($co{'title'}, $co{'title_short'},
2213                                           href(action=>"commit", hash=>$commit), $ref);
2214                 print "</td>\n" .
2215                       "<td class=\"link\">" .
2216                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2217                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2218                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2219                 if (gitweb_have_snapshot()) {
2220                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2221                 }
2222                 print "</td>\n" .
2223                       "</tr>\n";
2224         }
2225         if (defined $extra) {
2226                 print "<tr>\n" .
2227                       "<td colspan=\"4\">$extra</td>\n" .
2228                       "</tr>\n";
2229         }
2230         print "</table>\n";
2231 }
2232
2233 sub git_history_body {
2234         # Warning: assumes constant type (blob or tree) during history
2235         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2236
2237         $from = 0 unless defined $from;
2238         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2239
2240         print "<table class=\"history\" cellspacing=\"0\">\n";
2241         my $alternate = 1;
2242         for (my $i = $from; $i <= $to; $i++) {
2243                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2244                         next;
2245                 }
2246
2247                 my $commit = $1;
2248                 my %co = parse_commit($commit);
2249                 if (!%co) {
2250                         next;
2251                 }
2252
2253                 my $ref = format_ref_marker($refs, $commit);
2254
2255                 if ($alternate) {
2256                         print "<tr class=\"dark\">\n";
2257                 } else {
2258                         print "<tr class=\"light\">\n";
2259                 }
2260                 $alternate ^= 1;
2261                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2262                       # shortlog uses      chop_str($co{'author_name'}, 10)
2263                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2264                       "<td>";
2265                 # originally git_history used chop_str($co{'title'}, 50)
2266                 print format_subject_html($co{'title'}, $co{'title_short'},
2267                                           href(action=>"commit", hash=>$commit), $ref);
2268                 print "</td>\n" .
2269                       "<td class=\"link\">" .
2270                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2271                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2272
2273                 if ($ftype eq 'blob') {
2274                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2275                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2276                         if (defined $blob_current && defined $blob_parent &&
2277                                         $blob_current ne $blob_parent) {
2278                                 print " | " .
2279                                         $cgi->a({-href => href(action=>"blobdiff",
2280                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2281                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2282                                                                file_name=>$file_name)},
2283                                                 "diff to current");
2284                         }
2285                 }
2286                 print "</td>\n" .
2287                       "</tr>\n";
2288         }
2289         if (defined $extra) {
2290                 print "<tr>\n" .
2291                       "<td colspan=\"4\">$extra</td>\n" .
2292                       "</tr>\n";
2293         }
2294         print "</table>\n";
2295 }
2296
2297 sub git_tags_body {
2298         # uses global variable $project
2299         my ($taglist, $from, $to, $extra) = @_;
2300         $from = 0 unless defined $from;
2301         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2302
2303         print "<table class=\"tags\" cellspacing=\"0\">\n";
2304         my $alternate = 1;
2305         for (my $i = $from; $i <= $to; $i++) {
2306                 my $entry = $taglist->[$i];
2307                 my %tag = %$entry;
2308                 my $comment = $tag{'subject'};
2309                 my $comment_short;
2310                 if (defined $comment) {
2311                         $comment_short = chop_str($comment, 30, 5);
2312                 }
2313                 if ($alternate) {
2314                         print "<tr class=\"dark\">\n";
2315                 } else {
2316                         print "<tr class=\"light\">\n";
2317                 }
2318                 $alternate ^= 1;
2319                 print "<td><i>$tag{'age'}</i></td>\n" .
2320                       "<td>" .
2321                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2322                                -class => "list name"}, esc_html($tag{'name'})) .
2323                       "</td>\n" .
2324                       "<td>";
2325                 if (defined $comment) {
2326                         print format_subject_html($comment, $comment_short,
2327                                                   href(action=>"tag", hash=>$tag{'id'}));
2328                 }
2329                 print "</td>\n" .
2330                       "<td class=\"selflink\">";
2331                 if ($tag{'type'} eq "tag") {
2332                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2333                 } else {
2334                         print "&nbsp;";
2335                 }
2336                 print "</td>\n" .
2337                       "<td class=\"link\">" . " | " .
2338                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2339                 if ($tag{'reftype'} eq "commit") {
2340                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2341                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2342                 } elsif ($tag{'reftype'} eq "blob") {
2343                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2344                 }
2345                 print "</td>\n" .
2346                       "</tr>";
2347         }
2348         if (defined $extra) {
2349                 print "<tr>\n" .
2350                       "<td colspan=\"5\">$extra</td>\n" .
2351                       "</tr>\n";
2352         }
2353         print "</table>\n";
2354 }
2355
2356 sub git_heads_body {
2357         # uses global variable $project
2358         my ($headlist, $head, $from, $to, $extra) = @_;
2359         $from = 0 unless defined $from;
2360         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2361
2362         print "<table class=\"heads\" cellspacing=\"0\">\n";
2363         my $alternate = 1;
2364         for (my $i = $from; $i <= $to; $i++) {
2365                 my $entry = $headlist->[$i];
2366                 my %ref = %$entry;
2367                 my $curr = $ref{'id'} eq $head;
2368                 if ($alternate) {
2369                         print "<tr class=\"dark\">\n";
2370                 } else {
2371                         print "<tr class=\"light\">\n";
2372                 }
2373                 $alternate ^= 1;
2374                 print "<td><i>$ref{'age'}</i></td>\n" .
2375                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2376                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2377                                -class => "list name"},esc_html($ref{'name'})) .
2378                       "</td>\n" .
2379                       "<td class=\"link\">" .
2380                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2381                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2382                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2383                       "</td>\n" .
2384                       "</tr>";
2385         }
2386         if (defined $extra) {
2387                 print "<tr>\n" .
2388                       "<td colspan=\"3\">$extra</td>\n" .
2389                       "</tr>\n";
2390         }
2391         print "</table>\n";
2392 }
2393
2394 ## ======================================================================
2395 ## ======================================================================
2396 ## actions
2397
2398 sub git_project_list {
2399         my $order = $cgi->param('o');
2400         if (defined $order && $order !~ m/project|descr|owner|age/) {
2401                 die_error(undef, "Unknown order parameter");
2402         }
2403
2404         my @list = git_get_projects_list();
2405         my @projects;
2406         if (!@list) {
2407                 die_error(undef, "No projects found");
2408         }
2409         foreach my $pr (@list) {
2410                 my (@aa) = git_get_last_activity($pr->{'path'});
2411                 unless (@aa) {
2412                         next;
2413                 }
2414                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2415                 if (!defined $pr->{'descr'}) {
2416                         my $descr = git_get_project_description($pr->{'path'}) || "";
2417                         $pr->{'descr'} = chop_str($descr, 25, 5);
2418                 }
2419                 if (!defined $pr->{'owner'}) {
2420                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2421                 }
2422                 push @projects, $pr;
2423         }
2424
2425         git_header_html();
2426         if (-f $home_text) {
2427                 print "<div class=\"index_include\">\n";
2428                 open (my $fd, $home_text);
2429                 print <$fd>;
2430                 close $fd;
2431                 print "</div>\n";
2432         }
2433         print "<table class=\"project_list\">\n" .
2434               "<tr>\n";
2435         $order ||= "project";
2436         if ($order eq "project") {
2437                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2438                 print "<th>Project</th>\n";
2439         } else {
2440                 print "<th>" .
2441                       $cgi->a({-href => href(project=>undef, order=>'project'),
2442                                -class => "header"}, "Project") .
2443                       "</th>\n";
2444         }
2445         if ($order eq "descr") {
2446                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2447                 print "<th>Description</th>\n";
2448         } else {
2449                 print "<th>" .
2450                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2451                                -class => "header"}, "Description") .
2452                       "</th>\n";
2453         }
2454         if ($order eq "owner") {
2455                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2456                 print "<th>Owner</th>\n";
2457         } else {
2458                 print "<th>" .
2459                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2460                                -class => "header"}, "Owner") .
2461                       "</th>\n";
2462         }
2463         if ($order eq "age") {
2464                 @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2465                 print "<th>Last Change</th>\n";
2466         } else {
2467                 print "<th>" .
2468                       $cgi->a({-href => href(project=>undef, order=>'age'),
2469                                -class => "header"}, "Last Change") .
2470                       "</th>\n";
2471         }
2472         print "<th></th>\n" .
2473               "</tr>\n";
2474         my $alternate = 1;
2475         foreach my $pr (@projects) {
2476                 if ($alternate) {
2477                         print "<tr class=\"dark\">\n";
2478                 } else {
2479                         print "<tr class=\"light\">\n";
2480                 }
2481                 $alternate ^= 1;
2482                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2483                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2484                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2485                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2486                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2487                       $pr->{'age_string'} . "</td>\n" .
2488                       "<td class=\"link\">" .
2489                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2490                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2491                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2492                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2493                       "</td>\n" .
2494                       "</tr>\n";
2495         }
2496         print "</table>\n";
2497         git_footer_html();
2498 }
2499
2500 sub git_project_index {
2501         my @projects = git_get_projects_list();
2502
2503         print $cgi->header(
2504                 -type => 'text/plain',
2505                 -charset => 'utf-8',
2506                 -content_disposition => 'inline; filename="index.aux"');
2507
2508         foreach my $pr (@projects) {
2509                 if (!exists $pr->{'owner'}) {
2510                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2511                 }
2512
2513                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2514                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2515                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2516                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2517                 $path  =~ s/ /\+/g;
2518                 $owner =~ s/ /\+/g;
2519
2520                 print "$path $owner\n";
2521         }
2522 }
2523
2524 sub git_summary {
2525         my $descr = git_get_project_description($project) || "none";
2526         my $head = git_get_head_hash($project);
2527         my %co = parse_commit($head);
2528         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2529
2530         my $owner = git_get_project_owner($project);
2531
2532         my $refs = git_get_references();
2533         my @taglist  = git_get_tags_list(15);
2534         my @headlist = git_get_heads_list(15);
2535
2536         git_header_html();
2537         git_print_page_nav('summary','', $head);
2538
2539         print "<div class=\"title\">&nbsp;</div>\n";
2540         print "<table cellspacing=\"0\">\n" .
2541               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2542               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2543               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2544         # use per project git URL list in $projectroot/$project/cloneurl
2545         # or make project git URL from git base URL and project name
2546         my $url_tag = "URL";
2547         my @url_list = git_get_project_url_list($project);
2548         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2549         foreach my $git_url (@url_list) {
2550                 next unless $git_url;
2551                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2552                 $url_tag = "";
2553         }
2554         print "</table>\n";
2555
2556         if (-s "$projectroot/$project/README.html") {
2557                 if (open my $fd, "$projectroot/$project/README.html") {
2558                         print "<div class=\"title\">readme</div>\n";
2559                         print $_ while (<$fd>);
2560                         close $fd;
2561                 }
2562         }
2563
2564         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2565                 git_get_head_hash($project), "--"
2566                 or die_error(undef, "Open git-rev-list failed");
2567         my @revlist = map { chomp; $_ } <$fd>;
2568         close $fd;
2569         git_print_header_div('shortlog');
2570         git_shortlog_body(\@revlist, 0, 15, $refs,
2571                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2572
2573         if (@taglist) {
2574                 git_print_header_div('tags');
2575                 git_tags_body(\@taglist, 0, 15,
2576                               $cgi->a({-href => href(action=>"tags")}, "..."));
2577         }
2578
2579         if (@headlist) {
2580                 git_print_header_div('heads');
2581                 git_heads_body(\@headlist, $head, 0, 15,
2582                                $cgi->a({-href => href(action=>"heads")}, "..."));
2583         }
2584
2585         git_footer_html();
2586 }
2587
2588 sub git_tag {
2589         my $head = git_get_head_hash($project);
2590         git_header_html();
2591         git_print_page_nav('','', $head,undef,$head);
2592         my %tag = parse_tag($hash);
2593         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2594         print "<div class=\"title_text\">\n" .
2595               "<table cellspacing=\"0\">\n" .
2596               "<tr>\n" .
2597               "<td>object</td>\n" .
2598               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2599                                $tag{'object'}) . "</td>\n" .
2600               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2601                                               $tag{'type'}) . "</td>\n" .
2602               "</tr>\n";
2603         if (defined($tag{'author'})) {
2604                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2605                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2606                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2607                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2608                         "</td></tr>\n";
2609         }
2610         print "</table>\n\n" .
2611               "</div>\n";
2612         print "<div class=\"page_body\">";
2613         my $comment = $tag{'comment'};
2614         foreach my $line (@$comment) {
2615                 print esc_html($line) . "<br/>\n";
2616         }
2617         print "</div>\n";
2618         git_footer_html();
2619 }
2620
2621 sub git_blame2 {
2622         my $fd;
2623         my $ftype;
2624
2625         my ($have_blame) = gitweb_check_feature('blame');
2626         if (!$have_blame) {
2627                 die_error('403 Permission denied', "Permission denied");
2628         }
2629         die_error('404 Not Found', "File name not defined") if (!$file_name);
2630         $hash_base ||= git_get_head_hash($project);
2631         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2632         my %co = parse_commit($hash_base)
2633                 or die_error(undef, "Reading commit failed");
2634         if (!defined $hash) {
2635                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2636                         or die_error(undef, "Error looking up file");
2637         }
2638         $ftype = git_get_type($hash);
2639         if ($ftype !~ "blob") {
2640                 die_error("400 Bad Request", "Object is not a blob");
2641         }
2642         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
2643               $file_name, $hash_base)
2644                 or die_error(undef, "Open git-blame failed");
2645         git_header_html();
2646         my $formats_nav =
2647                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2648                         "blob") .
2649                 " | " .
2650                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2651                         "history") .
2652                 " | " .
2653                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2654                         "HEAD");
2655         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2656         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2657         git_print_page_path($file_name, $ftype, $hash_base);
2658         my @rev_color = (qw(light2 dark2));
2659         my $num_colors = scalar(@rev_color);
2660         my $current_color = 0;
2661         my $last_rev;
2662         print <<HTML;
2663 <div class="page_body">
2664 <table class="blame">
2665 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2666 HTML
2667         my %metainfo = ();
2668         while (1) {
2669                 $_ = <$fd>;
2670                 last unless defined $_;
2671                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
2672                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
2673                 if (!exists $metainfo{$full_rev}) {
2674                         $metainfo{$full_rev} = {};
2675                 }
2676                 my $meta = $metainfo{$full_rev};
2677                 while (<$fd>) {
2678                         last if (s/^\t//);
2679                         if (/^(\S+) (.*)$/) {
2680                                 $meta->{$1} = $2;
2681                         }
2682                 }
2683                 my $data = $_;
2684                 my $rev = substr($full_rev, 0, 8);
2685                 my $author = $meta->{'author'};
2686                 my %date = parse_date($meta->{'author-time'},
2687                                       $meta->{'author-tz'});
2688                 my $date = $date{'iso-tz'};
2689                 if ($group_size) {
2690                         $current_color = ++$current_color % $num_colors;
2691                 }
2692                 print "<tr class=\"$rev_color[$current_color]\">\n";
2693                 if ($group_size) {
2694                         print "<td class=\"sha1\"";
2695                         print " title=\"". esc_html($author) . ", $date\"";
2696                         print " rowspan=\"$group_size\"" if ($group_size > 1);
2697                         print ">";
2698                         print $cgi->a({-href => href(action=>"commit",
2699                                                      hash=>$full_rev,
2700                                                      file_name=>$file_name)},
2701                                       esc_html($rev));
2702                         print "</td>\n";
2703                 }
2704                 my $blamed = href(action => 'blame',
2705                                   file_name => $meta->{'filename'},
2706                                   hash_base => $full_rev);
2707                 print "<td class=\"linenr\">";
2708                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
2709                                 -id => "l$lineno",
2710                                 -class => "linenr" },
2711                               esc_html($lineno));
2712                 print "</td>";
2713                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2714                 print "</tr>\n";
2715         }
2716         print "</table>\n";
2717         print "</div>";
2718         close $fd
2719                 or print "Reading blob failed\n";
2720         git_footer_html();
2721 }
2722
2723 sub git_blame {
2724         my $fd;
2725
2726         my ($have_blame) = gitweb_check_feature('blame');
2727         if (!$have_blame) {
2728                 die_error('403 Permission denied', "Permission denied");
2729         }
2730         die_error('404 Not Found', "File name not defined") if (!$file_name);
2731         $hash_base ||= git_get_head_hash($project);
2732         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2733         my %co = parse_commit($hash_base)
2734                 or die_error(undef, "Reading commit failed");
2735         if (!defined $hash) {
2736                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2737                         or die_error(undef, "Error lookup file");
2738         }
2739         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2740                 or die_error(undef, "Open git-annotate failed");
2741         git_header_html();
2742         my $formats_nav =
2743                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2744                         "blob") .
2745                 " | " .
2746                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2747                         "history") .
2748                 " | " .
2749                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2750                         "HEAD");
2751         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2752         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2753         git_print_page_path($file_name, 'blob', $hash_base);
2754         print "<div class=\"page_body\">\n";
2755         print <<HTML;
2756 <table class="blame">
2757   <tr>
2758     <th>Commit</th>
2759     <th>Age</th>
2760     <th>Author</th>
2761     <th>Line</th>
2762     <th>Data</th>
2763   </tr>
2764 HTML
2765         my @line_class = (qw(light dark));
2766         my $line_class_len = scalar (@line_class);
2767         my $line_class_num = $#line_class;
2768         while (my $line = <$fd>) {
2769                 my $long_rev;
2770                 my $short_rev;
2771                 my $author;
2772                 my $time;
2773                 my $lineno;
2774                 my $data;
2775                 my $age;
2776                 my $age_str;
2777                 my $age_class;
2778
2779                 chomp $line;
2780                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2781
2782                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2783                         $long_rev = $1;
2784                         $author   = $2;
2785                         $time     = $3;
2786                         $lineno   = $4;
2787                         $data     = $5;
2788                 } else {
2789                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2790                         next;
2791                 }
2792                 $short_rev  = substr ($long_rev, 0, 8);
2793                 $age        = time () - $time;
2794                 $age_str    = age_string ($age);
2795                 $age_str    =~ s/ /&nbsp;/g;
2796                 $age_class  = age_class($age);
2797                 $author     = esc_html ($author);
2798                 $author     =~ s/ /&nbsp;/g;
2799
2800                 $data = untabify($data);
2801                 $data = esc_html ($data);
2802
2803                 print <<HTML;
2804   <tr class="$line_class[$line_class_num]">
2805     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2806     <td class="$age_class">$age_str</td>
2807     <td>$author</td>
2808     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2809     <td class="pre">$data</td>
2810   </tr>
2811 HTML
2812         } # while (my $line = <$fd>)
2813         print "</table>\n\n";
2814         close $fd
2815                 or print "Reading blob failed.\n";
2816         print "</div>";
2817         git_footer_html();
2818 }
2819
2820 sub git_tags {
2821         my $head = git_get_head_hash($project);
2822         git_header_html();
2823         git_print_page_nav('','', $head,undef,$head);
2824         git_print_header_div('summary', $project);
2825
2826         my @tagslist = git_get_tags_list();
2827         if (@tagslist) {
2828                 git_tags_body(\@tagslist);
2829         }
2830         git_footer_html();
2831 }
2832
2833 sub git_heads {
2834         my $head = git_get_head_hash($project);
2835         git_header_html();
2836         git_print_page_nav('','', $head,undef,$head);
2837         git_print_header_div('summary', $project);
2838
2839         my @headslist = git_get_heads_list();
2840         if (@headslist) {
2841                 git_heads_body(\@headslist, $head);
2842         }
2843         git_footer_html();
2844 }
2845
2846 sub git_blob_plain {
2847         my $expires;
2848
2849         if (!defined $hash) {
2850                 if (defined $file_name) {
2851                         my $base = $hash_base || git_get_head_hash($project);
2852                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2853                                 or die_error(undef, "Error lookup file");
2854                 } else {
2855                         die_error(undef, "No file name defined");
2856                 }
2857         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2858                 # blobs defined by non-textual hash id's can be cached
2859                 $expires = "+1d";
2860         }
2861
2862         my $type = shift;
2863         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2864                 or die_error(undef, "Couldn't cat $file_name, $hash");
2865
2866         $type ||= blob_mimetype($fd, $file_name);
2867
2868         # save as filename, even when no $file_name is given
2869         my $save_as = "$hash";
2870         if (defined $file_name) {
2871                 $save_as = $file_name;
2872         } elsif ($type =~ m/^text\//) {
2873                 $save_as .= '.txt';
2874         }
2875
2876         print $cgi->header(
2877                 -type => "$type",
2878                 -expires=>$expires,
2879                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2880         undef $/;
2881         binmode STDOUT, ':raw';
2882         print <$fd>;
2883         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2884         $/ = "\n";
2885         close $fd;
2886 }
2887
2888 sub git_blob {
2889         my $expires;
2890
2891         if (!defined $hash) {
2892                 if (defined $file_name) {
2893                         my $base = $hash_base || git_get_head_hash($project);
2894                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2895                                 or die_error(undef, "Error lookup file");
2896                 } else {
2897                         die_error(undef, "No file name defined");
2898                 }
2899         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2900                 # blobs defined by non-textual hash id's can be cached
2901                 $expires = "+1d";
2902         }
2903
2904         my ($have_blame) = gitweb_check_feature('blame');
2905         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2906                 or die_error(undef, "Couldn't cat $file_name, $hash");
2907         my $mimetype = blob_mimetype($fd, $file_name);
2908         if ($mimetype !~ m/^text\//) {
2909                 close $fd;
2910                 return git_blob_plain($mimetype);
2911         }
2912         git_header_html(undef, $expires);
2913         my $formats_nav = '';
2914         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2915                 if (defined $file_name) {
2916                         if ($have_blame) {
2917                                 $formats_nav .=
2918                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2919                                                                hash=>$hash, file_name=>$file_name)},
2920                                                 "blame") .
2921                                         " | ";
2922                         }
2923                         $formats_nav .=
2924                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2925                                                        hash=>$hash, file_name=>$file_name)},
2926                                         "history") .
2927                                 " | " .
2928                                 $cgi->a({-href => href(action=>"blob_plain",
2929                                                        hash=>$hash, file_name=>$file_name)},
2930                                         "raw") .
2931                                 " | " .
2932                                 $cgi->a({-href => href(action=>"blob",
2933                                                        hash_base=>"HEAD", file_name=>$file_name)},
2934                                         "HEAD");
2935                 } else {
2936                         $formats_nav .=
2937                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2938                 }
2939                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2940                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2941         } else {
2942                 print "<div class=\"page_nav\">\n" .
2943                       "<br/><br/></div>\n" .
2944                       "<div class=\"title\">$hash</div>\n";
2945         }
2946         git_print_page_path($file_name, "blob", $hash_base);
2947         print "<div class=\"page_body\">\n";
2948         my $nr;
2949         while (my $line = <$fd>) {
2950                 chomp $line;
2951                 $nr++;
2952                 $line = untabify($line);
2953                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2954                        $nr, $nr, $nr, esc_html($line);
2955         }
2956         close $fd
2957                 or print "Reading blob failed.\n";
2958         print "</div>";
2959         git_footer_html();
2960 }
2961
2962 sub git_tree {
2963         my $have_snapshot = gitweb_have_snapshot();
2964
2965         if (!defined $hash_base) {
2966                 $hash_base = "HEAD";
2967         }
2968         if (!defined $hash) {
2969                 if (defined $file_name) {
2970                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
2971                 } else {
2972                         $hash = $hash_base;
2973                 }
2974         }
2975         $/ = "\0";
2976         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2977                 or die_error(undef, "Open git-ls-tree failed");
2978         my @entries = map { chomp; $_ } <$fd>;
2979         close $fd or die_error(undef, "Reading tree failed");
2980         $/ = "\n";
2981
2982         my $refs = git_get_references();
2983         my $ref = format_ref_marker($refs, $hash_base);
2984         git_header_html();
2985         my $basedir = '';
2986         my ($have_blame) = gitweb_check_feature('blame');
2987         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2988                 my @views_nav = ();
2989                 if (defined $file_name) {
2990                         push @views_nav,
2991                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2992                                                        hash=>$hash, file_name=>$file_name)},
2993                                         "history"),
2994                                 $cgi->a({-href => href(action=>"tree",
2995                                                        hash_base=>"HEAD", file_name=>$file_name)},
2996                                         "HEAD"),
2997                 }
2998                 if ($have_snapshot) {
2999                         # FIXME: Should be available when we have no hash base as well.
3000                         push @views_nav,
3001                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3002                                         "snapshot");
3003                 }
3004                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3005                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3006         } else {
3007                 undef $hash_base;
3008                 print "<div class=\"page_nav\">\n";
3009                 print "<br/><br/></div>\n";
3010                 print "<div class=\"title\">$hash</div>\n";
3011         }
3012         if (defined $file_name) {
3013                 $basedir = $file_name;
3014                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3015                         $basedir .= '/';
3016                 }
3017         }
3018         git_print_page_path($file_name, 'tree', $hash_base);
3019         print "<div class=\"page_body\">\n";
3020         print "<table cellspacing=\"0\">\n";
3021         my $alternate = 1;
3022         # '..' (top directory) link if possible
3023         if (defined $hash_base &&
3024             defined $file_name && $file_name =~ m![^/]+$!) {
3025                 if ($alternate) {
3026                         print "<tr class=\"dark\">\n";
3027                 } else {
3028                         print "<tr class=\"light\">\n";
3029                 }
3030                 $alternate ^= 1;
3031
3032                 my $up = $file_name;
3033                 $up =~ s!/?[^/]+$!!;
3034                 undef $up unless $up;
3035                 # based on git_print_tree_entry
3036                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3037                 print '<td class="list">';
3038                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3039                                              file_name=>$up)},
3040                               "..");
3041                 print "</td>\n";
3042                 print "<td class=\"link\"></td>\n";
3043
3044                 print "</tr>\n";
3045         }
3046         foreach my $line (@entries) {
3047                 my %t = parse_ls_tree_line($line, -z => 1);
3048
3049                 if ($alternate) {
3050                         print "<tr class=\"dark\">\n";
3051                 } else {
3052                         print "<tr class=\"light\">\n";
3053                 }
3054                 $alternate ^= 1;
3055
3056                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3057
3058                 print "</tr>\n";
3059         }
3060         print "</table>\n" .
3061               "</div>";
3062         git_footer_html();
3063 }
3064
3065 sub git_snapshot {
3066         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3067         my $have_snapshot = (defined $ctype && defined $suffix);
3068         if (!$have_snapshot) {
3069                 die_error('403 Permission denied', "Permission denied");
3070         }
3071
3072         if (!defined $hash) {
3073                 $hash = git_get_head_hash($project);
3074         }
3075
3076         my $filename = basename($project) . "-$hash.tar.$suffix";
3077
3078         print $cgi->header(
3079                 -type => 'application/x-tar',
3080                 -content_encoding => $ctype,
3081                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3082                 -status => '200 OK');
3083
3084         my $git = git_cmd_str();
3085         my $name = $project;
3086         $name =~ s/\047/\047\\\047\047/g;
3087         open my $fd, "-|",
3088         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3089                 or die_error(undef, "Execute git-tar-tree failed.");
3090         binmode STDOUT, ':raw';
3091         print <$fd>;
3092         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3093         close $fd;
3094
3095 }
3096
3097 sub git_log {
3098         my $head = git_get_head_hash($project);
3099         if (!defined $hash) {
3100                 $hash = $head;
3101         }
3102         if (!defined $page) {
3103                 $page = 0;
3104         }
3105         my $refs = git_get_references();
3106
3107         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3108         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3109                 or die_error(undef, "Open git-rev-list failed");
3110         my @revlist = map { chomp; $_ } <$fd>;
3111         close $fd;
3112
3113         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3114
3115         git_header_html();
3116         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3117
3118         if (!@revlist) {
3119                 my %co = parse_commit($hash);
3120
3121                 git_print_header_div('summary', $project);
3122                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3123         }
3124         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3125                 my $commit = $revlist[$i];
3126                 my $ref = format_ref_marker($refs, $commit);
3127                 my %co = parse_commit($commit);
3128                 next if !%co;
3129                 my %ad = parse_date($co{'author_epoch'});
3130                 git_print_header_div('commit',
3131                                "<span class=\"age\">$co{'age_string'}</span>" .
3132                                esc_html($co{'title'}) . $ref,
3133                                $commit);
3134                 print "<div class=\"title_text\">\n" .
3135                       "<div class=\"log_link\">\n" .
3136                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3137                       " | " .
3138                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3139                       " | " .
3140                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3141                       "<br/>\n" .
3142                       "</div>\n" .
3143                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3144                       "</div>\n";
3145
3146                 print "<div class=\"log_body\">\n";
3147                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3148                 print "</div>\n";
3149         }
3150         git_footer_html();
3151 }
3152
3153 sub git_commit {
3154         my %co = parse_commit($hash);
3155         if (!%co) {
3156                 die_error(undef, "Unknown commit object");
3157         }
3158         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3159         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3160
3161         my $parent = $co{'parent'};
3162         if (!defined $parent) {
3163                 $parent = "--root";
3164         }
3165         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3166                 @diff_opts, $parent, $hash, "--"
3167                 or die_error(undef, "Open git-diff-tree failed");
3168         my @difftree = map { chomp; $_ } <$fd>;
3169         close $fd or die_error(undef, "Reading git-diff-tree failed");
3170
3171         # non-textual hash id's can be cached
3172         my $expires;
3173         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3174                 $expires = "+1d";
3175         }
3176         my $refs = git_get_references();
3177         my $ref = format_ref_marker($refs, $co{'id'});
3178
3179         my $have_snapshot = gitweb_have_snapshot();
3180
3181         my @views_nav = ();
3182         if (defined $file_name && defined $co{'parent'}) {
3183                 push @views_nav,
3184                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3185                                 "blame");
3186         }
3187         git_header_html(undef, $expires);
3188         git_print_page_nav('commit', '',
3189                            $hash, $co{'tree'}, $hash,
3190                            join (' | ', @views_nav));
3191
3192         if (defined $co{'parent'}) {
3193                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3194         } else {
3195                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3196         }
3197         print "<div class=\"title_text\">\n" .
3198               "<table cellspacing=\"0\">\n";
3199         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3200               "<tr>" .
3201               "<td></td><td> $ad{'rfc2822'}";
3202         if ($ad{'hour_local'} < 6) {
3203                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3204                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3205         } else {
3206                 printf(" (%02d:%02d %s)",
3207                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3208         }
3209         print "</td>" .
3210               "</tr>\n";
3211         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3212         print "<tr><td></td><td> $cd{'rfc2822'}" .
3213               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3214               "</td></tr>\n";
3215         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3216         print "<tr>" .
3217               "<td>tree</td>" .
3218               "<td class=\"sha1\">" .
3219               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3220                        class => "list"}, $co{'tree'}) .
3221               "</td>" .
3222               "<td class=\"link\">" .
3223               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3224                       "tree");
3225         if ($have_snapshot) {
3226                 print " | " .
3227                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3228         }
3229         print "</td>" .
3230               "</tr>\n";
3231         my $parents = $co{'parents'};
3232         foreach my $par (@$parents) {
3233                 print "<tr>" .
3234                       "<td>parent</td>" .
3235                       "<td class=\"sha1\">" .
3236                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3237                                class => "list"}, $par) .
3238                       "</td>" .
3239                       "<td class=\"link\">" .
3240                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3241                       " | " .
3242                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3243                       "</td>" .
3244                       "</tr>\n";
3245         }
3246         print "</table>".
3247               "</div>\n";
3248
3249         print "<div class=\"page_body\">\n";
3250         git_print_log($co{'comment'});
3251         print "</div>\n";
3252
3253         git_difftree_body(\@difftree, $hash, $parent);
3254
3255         git_footer_html();
3256 }
3257
3258 sub git_blobdiff {
3259         my $format = shift || 'html';
3260
3261         my $fd;
3262         my @difftree;
3263         my %diffinfo;
3264         my $expires;
3265
3266         # preparing $fd and %diffinfo for git_patchset_body
3267         # new style URI
3268         if (defined $hash_base && defined $hash_parent_base) {
3269                 if (defined $file_name) {
3270                         # read raw output
3271                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3272                                 $hash_parent_base, $hash_base,
3273                                 "--", $file_name
3274                                 or die_error(undef, "Open git-diff-tree failed");
3275                         @difftree = map { chomp; $_ } <$fd>;
3276                         close $fd
3277                                 or die_error(undef, "Reading git-diff-tree failed");
3278                         @difftree
3279                                 or die_error('404 Not Found', "Blob diff not found");
3280
3281                 } elsif (defined $hash &&
3282                          $hash =~ /[0-9a-fA-F]{40}/) {
3283                         # try to find filename from $hash
3284
3285                         # read filtered raw output
3286                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3287                                 $hash_parent_base, $hash_base, "--"
3288                                 or die_error(undef, "Open git-diff-tree failed");
3289                         @difftree =
3290                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3291                                 # $hash == to_id
3292                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3293                                 map { chomp; $_ } <$fd>;
3294                         close $fd
3295                                 or die_error(undef, "Reading git-diff-tree failed");
3296                         @difftree
3297                                 or die_error('404 Not Found', "Blob diff not found");
3298
3299                 } else {
3300                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3301                 }
3302
3303                 if (@difftree > 1) {
3304                         die_error('404 Not Found', "Ambiguous blob diff specification");
3305                 }
3306
3307                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3308                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3309                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3310
3311                 $hash_parent ||= $diffinfo{'from_id'};
3312                 $hash        ||= $diffinfo{'to_id'};
3313
3314                 # non-textual hash id's can be cached
3315                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3316                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3317                         $expires = '+1d';
3318                 }
3319
3320                 # open patch output
3321                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3322                         '-p', $hash_parent_base, $hash_base,
3323                         "--", $file_name
3324                         or die_error(undef, "Open git-diff-tree failed");
3325         }
3326
3327         # old/legacy style URI
3328         if (!%diffinfo && # if new style URI failed
3329             defined $hash && defined $hash_parent) {
3330                 # fake git-diff-tree raw output
3331                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3332                 $diffinfo{'from_id'} = $hash_parent;
3333                 $diffinfo{'to_id'}   = $hash;
3334                 if (defined $file_name) {
3335                         if (defined $file_parent) {
3336                                 $diffinfo{'status'} = '2';
3337                                 $diffinfo{'from_file'} = $file_parent;
3338                                 $diffinfo{'to_file'}   = $file_name;
3339                         } else { # assume not renamed
3340                                 $diffinfo{'status'} = '1';
3341                                 $diffinfo{'from_file'} = $file_name;
3342                                 $diffinfo{'to_file'}   = $file_name;
3343                         }
3344                 } else { # no filename given
3345                         $diffinfo{'status'} = '2';
3346                         $diffinfo{'from_file'} = $hash_parent;
3347                         $diffinfo{'to_file'}   = $hash;
3348                 }
3349
3350                 # non-textual hash id's can be cached
3351                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3352                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3353                         $expires = '+1d';
3354                 }
3355
3356                 # open patch output
3357                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3358                         $hash_parent, $hash, "--"
3359                         or die_error(undef, "Open git-diff failed");
3360         } else  {
3361                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3362                         unless %diffinfo;
3363         }
3364
3365         # header
3366         if ($format eq 'html') {
3367                 my $formats_nav =
3368                         $cgi->a({-href => href(action=>"blobdiff_plain",
3369                                                hash=>$hash, hash_parent=>$hash_parent,
3370                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3371                                                file_name=>$file_name, file_parent=>$file_parent)},
3372                                 "raw");
3373                 git_header_html(undef, $expires);
3374                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3375                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3376                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3377                 } else {
3378                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3379                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3380                 }
3381                 if (defined $file_name) {
3382                         git_print_page_path($file_name, "blob", $hash_base);
3383                 } else {
3384                         print "<div class=\"page_path\"></div>\n";
3385                 }
3386
3387         } elsif ($format eq 'plain') {
3388                 print $cgi->header(
3389                         -type => 'text/plain',
3390                         -charset => 'utf-8',
3391                         -expires => $expires,
3392                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3393
3394                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3395
3396         } else {
3397                 die_error(undef, "Unknown blobdiff format");
3398         }
3399
3400         # patch
3401         if ($format eq 'html') {
3402                 print "<div class=\"page_body\">\n";
3403
3404                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3405                 close $fd;
3406
3407                 print "</div>\n"; # class="page_body"
3408                 git_footer_html();
3409
3410         } else {
3411                 while (my $line = <$fd>) {
3412                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3413                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3414
3415                         print $line;
3416
3417                         last if $line =~ m!^\+\+\+!;
3418                 }
3419                 local $/ = undef;
3420                 print <$fd>;
3421                 close $fd;
3422         }
3423 }
3424
3425 sub git_blobdiff_plain {
3426         git_blobdiff('plain');
3427 }
3428
3429 sub git_commitdiff {
3430         my $format = shift || 'html';
3431         my %co = parse_commit($hash);
3432         if (!%co) {
3433                 die_error(undef, "Unknown commit object");
3434         }
3435
3436         # we need to prepare $formats_nav before any parameter munging
3437         my $formats_nav;
3438         if ($format eq 'html') {
3439                 $formats_nav =
3440                         $cgi->a({-href => href(action=>"commitdiff_plain",
3441                                                hash=>$hash, hash_parent=>$hash_parent)},
3442                                 "raw");
3443
3444                 if (defined $hash_parent) {
3445                         # commitdiff with two commits given
3446                         my $hash_parent_short = $hash_parent;
3447                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3448                                 $hash_parent_short = substr($hash_parent, 0, 7);
3449                         }
3450                         $formats_nav .=
3451                                 ' (from: ' .
3452                                 $cgi->a({-href => href(action=>"commitdiff",
3453                                                        hash=>$hash_parent)},
3454                                         esc_html($hash_parent_short)) .
3455                                 ')';
3456                 } elsif (!$co{'parent'}) {
3457                         # --root commitdiff
3458                         $formats_nav .= ' (initial)';
3459                 } elsif (scalar @{$co{'parents'}} == 1) {
3460                         # single parent commit
3461                         $formats_nav .=
3462                                 ' (parent: ' .
3463                                 $cgi->a({-href => href(action=>"commitdiff",
3464                                                        hash=>$co{'parent'})},
3465                                         esc_html(substr($co{'parent'}, 0, 7))) .
3466                                 ')';
3467                 } else {
3468                         # merge commit
3469                         $formats_nav .=
3470                                 ' (merge: ' .
3471                                 join(' ', map {
3472                                         $cgi->a({-href => href(action=>"commitdiff",
3473                                                                hash=>$_)},
3474                                                 esc_html(substr($_, 0, 7)));
3475                                 } @{$co{'parents'}} ) .
3476                                 ')';
3477                 }
3478         }
3479
3480         if (!defined $hash_parent) {
3481                 $hash_parent = $co{'parent'} || '--root';
3482         }
3483
3484         # read commitdiff
3485         my $fd;
3486         my @difftree;
3487         if ($format eq 'html') {
3488                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3489                         "--no-commit-id", "--patch-with-raw", "--full-index",
3490                         $hash_parent, $hash, "--"
3491                         or die_error(undef, "Open git-diff-tree failed");
3492
3493                 while (chomp(my $line = <$fd>)) {
3494                         # empty line ends raw part of diff-tree output
3495                         last unless $line;
3496                         push @difftree, $line;
3497                 }
3498
3499         } elsif ($format eq 'plain') {
3500                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3501                         '-p', $hash_parent, $hash, "--"
3502                         or die_error(undef, "Open git-diff-tree failed");
3503
3504         } else {
3505                 die_error(undef, "Unknown commitdiff format");
3506         }
3507
3508         # non-textual hash id's can be cached
3509         my $expires;
3510         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3511                 $expires = "+1d";
3512         }
3513
3514         # write commit message
3515         if ($format eq 'html') {
3516                 my $refs = git_get_references();
3517                 my $ref = format_ref_marker($refs, $co{'id'});
3518
3519                 git_header_html(undef, $expires);
3520                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3521                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3522                 git_print_authorship(\%co);
3523                 print "<div class=\"page_body\">\n";
3524                 if (@{$co{'comment'}} > 1) {
3525                         print "<div class=\"log\">\n";
3526                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
3527                         print "</div>\n"; # class="log"
3528                 }
3529
3530         } elsif ($format eq 'plain') {
3531                 my $refs = git_get_references("tags");
3532                 my $tagname = git_get_rev_name_tags($hash);
3533                 my $filename = basename($project) . "-$hash.patch";
3534
3535                 print $cgi->header(
3536                         -type => 'text/plain',
3537                         -charset => 'utf-8',
3538                         -expires => $expires,
3539                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3540                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3541                 print <<TEXT;
3542 From: $co{'author'}
3543 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3544 Subject: $co{'title'}
3545 TEXT
3546                 print "X-Git-Tag: $tagname\n" if $tagname;
3547                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3548
3549                 foreach my $line (@{$co{'comment'}}) {
3550                         print "$line\n";
3551                 }
3552                 print "---\n\n";
3553         }
3554
3555         # write patch
3556         if ($format eq 'html') {
3557                 git_difftree_body(\@difftree, $hash, $hash_parent);
3558                 print "<br/>\n";
3559
3560                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3561                 close $fd;
3562                 print "</div>\n"; # class="page_body"
3563                 git_footer_html();
3564
3565         } elsif ($format eq 'plain') {
3566                 local $/ = undef;
3567                 print <$fd>;
3568                 close $fd
3569                         or print "Reading git-diff-tree failed\n";
3570         }
3571 }
3572
3573 sub git_commitdiff_plain {
3574         git_commitdiff('plain');
3575 }
3576
3577 sub git_history {
3578         if (!defined $hash_base) {
3579                 $hash_base = git_get_head_hash($project);
3580         }
3581         if (!defined $page) {
3582                 $page = 0;
3583         }
3584         my $ftype;
3585         my %co = parse_commit($hash_base);
3586         if (!%co) {
3587                 die_error(undef, "Unknown commit object");
3588         }
3589
3590         my $refs = git_get_references();
3591         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3592
3593         if (!defined $hash && defined $file_name) {
3594                 $hash = git_get_hash_by_path($hash_base, $file_name);
3595         }
3596         if (defined $hash) {
3597                 $ftype = git_get_type($hash);
3598         }
3599
3600         open my $fd, "-|",
3601                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3602                         or die_error(undef, "Open git-rev-list-failed");
3603         my @revlist = map { chomp; $_ } <$fd>;
3604         close $fd
3605                 or die_error(undef, "Reading git-rev-list failed");
3606
3607         my $paging_nav = '';
3608         if ($page > 0) {
3609                 $paging_nav .=
3610                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3611                                                file_name=>$file_name)},
3612                                 "first");
3613                 $paging_nav .= " &sdot; " .
3614                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3615                                                file_name=>$file_name, page=>$page-1),
3616                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3617         } else {
3618                 $paging_nav .= "first";
3619                 $paging_nav .= " &sdot; prev";
3620         }
3621         if ($#revlist >= (100 * ($page+1)-1)) {
3622                 $paging_nav .= " &sdot; " .
3623                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3624                                                file_name=>$file_name, page=>$page+1),
3625                                  -accesskey => "n", -title => "Alt-n"}, "next");
3626         } else {
3627                 $paging_nav .= " &sdot; next";
3628         }
3629         my $next_link = '';
3630         if ($#revlist >= (100 * ($page+1)-1)) {
3631                 $next_link =
3632                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3633                                                file_name=>$file_name, page=>$page+1),
3634                                  -title => "Alt-n"}, "next");
3635         }
3636
3637         git_header_html();
3638         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3639         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3640         git_print_page_path($file_name, $ftype, $hash_base);
3641
3642         git_history_body(\@revlist, ($page * 100), $#revlist,
3643                          $refs, $hash_base, $ftype, $next_link);
3644
3645         git_footer_html();
3646 }
3647
3648 sub git_search {
3649         if (!defined $searchtext) {
3650                 die_error(undef, "Text field empty");
3651         }
3652         if (!defined $hash) {
3653                 $hash = git_get_head_hash($project);
3654         }
3655         my %co = parse_commit($hash);
3656         if (!%co) {
3657                 die_error(undef, "Unknown commit object");
3658         }
3659
3660         $searchtype ||= 'commit';
3661         if ($searchtype eq 'pickaxe') {
3662                 # pickaxe may take all resources of your box and run for several minutes
3663                 # with every query - so decide by yourself how public you make this feature
3664                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3665                 if (!$have_pickaxe) {
3666                         die_error('403 Permission denied', "Permission denied");
3667                 }
3668         }
3669
3670         git_header_html();
3671         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3672         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3673
3674         print "<table cellspacing=\"0\">\n";
3675         my $alternate = 1;
3676         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
3677                 $/ = "\0";
3678                 open my $fd, "-|", git_cmd(), "rev-list",
3679                         "--header", "--parents", $hash, "--"
3680                         or next;
3681                 while (my $commit_text = <$fd>) {
3682                         if (!grep m/$searchtext/i, $commit_text) {
3683                                 next;
3684                         }
3685                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3686                                 next;
3687                         }
3688                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3689                                 next;
3690                         }
3691                         my @commit_lines = split "\n", $commit_text;
3692                         my %co = parse_commit(undef, \@commit_lines);
3693                         if (!%co) {
3694                                 next;
3695                         }
3696                         if ($alternate) {
3697                                 print "<tr class=\"dark\">\n";
3698                         } else {
3699                                 print "<tr class=\"light\">\n";
3700                         }
3701                         $alternate ^= 1;
3702                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3703                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3704                               "<td>" .
3705                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3706                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3707                         my $comment = $co{'comment'};
3708                         foreach my $line (@$comment) {
3709                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3710                                         my $lead = esc_html($1) || "";
3711                                         $lead = chop_str($lead, 30, 10);
3712                                         my $match = esc_html($2) || "";
3713                                         my $trail = esc_html($3) || "";
3714                                         $trail = chop_str($trail, 30, 10);
3715                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3716                                         print chop_str($text, 80, 5) . "<br/>\n";
3717                                 }
3718                         }
3719                         print "</td>\n" .
3720                               "<td class=\"link\">" .
3721                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3722                               " | " .
3723                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3724                         print "</td>\n" .
3725                               "</tr>\n";
3726                 }
3727                 close $fd;
3728         }
3729
3730         if ($searchtype eq 'pickaxe') {
3731                 $/ = "\n";
3732                 my $git_command = git_cmd_str();
3733                 open my $fd, "-|", "$git_command rev-list $hash | " .
3734                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3735                 undef %co;
3736                 my @files;
3737                 while (my $line = <$fd>) {
3738                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3739                                 my %set;
3740                                 $set{'file'} = $6;
3741                                 $set{'from_id'} = $3;
3742                                 $set{'to_id'} = $4;
3743                                 $set{'id'} = $set{'to_id'};
3744                                 if ($set{'id'} =~ m/0{40}/) {
3745                                         $set{'id'} = $set{'from_id'};
3746                                 }
3747                                 if ($set{'id'} =~ m/0{40}/) {
3748                                         next;
3749                                 }
3750                                 push @files, \%set;
3751                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3752                                 if (%co) {
3753                                         if ($alternate) {
3754                                                 print "<tr class=\"dark\">\n";
3755                                         } else {
3756                                                 print "<tr class=\"light\">\n";
3757                                         }
3758                                         $alternate ^= 1;
3759                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3760                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3761                                               "<td>" .
3762                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3763                                                       -class => "list subject"},
3764                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3765                                         while (my $setref = shift @files) {
3766                                                 my %set = %$setref;
3767                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3768                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3769                                                               -class => "list"},
3770                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3771                                                       "<br/>\n";
3772                                         }
3773                                         print "</td>\n" .
3774                                               "<td class=\"link\">" .
3775                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3776                                               " | " .
3777                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3778                                         print "</td>\n" .
3779                                               "</tr>\n";
3780                                 }
3781                                 %co = parse_commit($1);
3782                         }
3783                 }
3784                 close $fd;
3785         }
3786         print "</table>\n";
3787         git_footer_html();
3788 }
3789
3790 sub git_search_help {
3791         git_header_html();
3792         git_print_page_nav('','', $hash,$hash,$hash);
3793         print <<EOT;
3794 <dl>
3795 <dt><b>commit</b></dt>
3796 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
3797 <dt><b>author</b></dt>
3798 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
3799 <dt><b>committer</b></dt>
3800 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
3801 EOT
3802         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3803         if ($have_pickaxe) {
3804                 print <<EOT;
3805 <dt><b>pickaxe</b></dt>
3806 <dd>All commits that caused the string to appear or disappear from any file (changes that
3807 added, removed or "modified" the string) will be listed. This search can take a while and
3808 takes a lot of strain on the server, so please use it wisely.</dd>
3809 EOT
3810         }
3811         print "</dl>\n";
3812         git_footer_html();
3813 }
3814
3815 sub git_shortlog {
3816         my $head = git_get_head_hash($project);
3817         if (!defined $hash) {
3818                 $hash = $head;
3819         }
3820         if (!defined $page) {
3821                 $page = 0;
3822         }
3823         my $refs = git_get_references();
3824
3825         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3826         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3827                 or die_error(undef, "Open git-rev-list failed");
3828         my @revlist = map { chomp; $_ } <$fd>;
3829         close $fd;
3830
3831         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3832         my $next_link = '';
3833         if ($#revlist >= (100 * ($page+1)-1)) {
3834                 $next_link =
3835                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3836                                  -title => "Alt-n"}, "next");
3837         }
3838
3839
3840         git_header_html();
3841         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3842         git_print_header_div('summary', $project);
3843
3844         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3845
3846         git_footer_html();
3847 }
3848
3849 ## ......................................................................
3850 ## feeds (RSS, OPML)
3851
3852 sub git_rss {
3853         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3854         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
3855                 git_get_head_hash($project), "--"
3856                 or die_error(undef, "Open git-rev-list failed");
3857         my @revlist = map { chomp; $_ } <$fd>;
3858         close $fd or die_error(undef, "Reading git-rev-list failed");
3859         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3860         print <<XML;
3861 <?xml version="1.0" encoding="utf-8"?>
3862 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3863 <channel>
3864 <title>$project $my_uri $my_url</title>
3865 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3866 <description>$project log</description>
3867 <language>en</language>
3868 XML
3869
3870         for (my $i = 0; $i <= $#revlist; $i++) {
3871                 my $commit = $revlist[$i];
3872                 my %co = parse_commit($commit);
3873                 # we read 150, we always show 30 and the ones more recent than 48 hours
3874                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3875                         last;
3876                 }
3877                 my %cd = parse_date($co{'committer_epoch'});
3878                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3879                         $co{'parent'}, $co{'id'}, "--"
3880                         or next;
3881                 my @difftree = map { chomp; $_ } <$fd>;
3882                 close $fd
3883                         or next;
3884                 print "<item>\n" .
3885                       "<title>" .
3886                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3887                       "</title>\n" .
3888                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3889                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3890                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3891                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3892                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3893                       "<content:encoded>" .
3894                       "<![CDATA[\n";
3895                 my $comment = $co{'comment'};
3896                 foreach my $line (@$comment) {
3897                         $line = to_utf8($line);
3898                         print "$line<br/>\n";
3899                 }
3900                 print "<br/>\n";
3901                 foreach my $line (@difftree) {
3902                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3903                                 next;
3904                         }
3905                         my $file = esc_html(unquote($7));
3906                         $file = to_utf8($file);
3907                         print "$file<br/>\n";
3908                 }
3909                 print "]]>\n" .
3910                       "</content:encoded>\n" .
3911                       "</item>\n";
3912         }
3913         print "</channel></rss>";
3914 }
3915
3916 sub git_opml {
3917         my @list = git_get_projects_list();
3918
3919         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3920         print <<XML;
3921 <?xml version="1.0" encoding="utf-8"?>
3922 <opml version="1.0">
3923 <head>
3924   <title>$site_name OPML Export</title>
3925 </head>
3926 <body>
3927 <outline text="git RSS feeds">
3928 XML
3929
3930         foreach my $pr (@list) {
3931                 my %proj = %$pr;
3932                 my $head = git_get_head_hash($proj{'path'});
3933                 if (!defined $head) {
3934                         next;
3935                 }
3936                 $git_dir = "$projectroot/$proj{'path'}";
3937                 my %co = parse_commit($head);
3938                 if (!%co) {
3939                         next;
3940                 }
3941
3942                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3943                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3944                 my $html = "$my_url?p=$proj{'path'};a=summary";
3945                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3946         }
3947         print <<XML;
3948 </outline>
3949 </body>
3950 </opml>
3951 XML
3952 }