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 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # default order of projects list
  75 # valid values are none, project, descr, owner, and age
  76 our $default_projects_order = "project";
  77
  78 # show repository only if this file exists
  79 # (only effective if this variable evaluates to true)
  80 our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82 # only allow viewing of repositories also shown on the overview page
  83 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85 # list of git base URLs used for URL to where fetch project from,
  86 # i.e. full URL is "$git_base_url/$project"
  87 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89 # default blob_plain mimetype and default charset for text/plain blob
  90 our $default_blob_plain_mimetype = 'text/plain';
  91 our $default_text_plain_charset  = undef;
  92
  93 # file to use for guessing MIME types before trying /etc/mime.types
  94 # (relative to the current git repository)
  95 our $mimetypes_file = undef;
  96
  97 # assume this charset if line contains non-UTF-8 characters;
  98 # it should be valid encoding (see Encoding::Supported(3pm) for list),
  99 # for which encoding all byte sequences are valid, for example
 100 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 101 # could be even 'utf-8' for the old behavior)
 102 our $fallback_encoding = 'latin1';
 103
 104 # You define site-wide feature defaults here; override them with
 105 # $GITWEB_CONFIG as necessary.
 106 our %feature = (
 107         # feature => {
 108         #       'sub' => feature-sub (subroutine),
 109         #       'override' => allow-override (boolean),
 110         #       'default' => [ default options...] (array reference)}
 111         #
 112         # if feature is overridable (it means that allow-override has true value),
 113         # then feature-sub will be called with default options as parameters;
 114         # return value of feature-sub indicates if to enable specified feature
 115         #
 116         # if there is no 'sub' key (no feature-sub), then feature cannot be
 117         # overriden
 118         #
 119         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 120
 121         # Enable the 'blame' blob view, showing the last commit that modified
 122         # each line in the file. This can be very CPU-intensive.
 123
 124         # To enable system wide have in $GITWEB_CONFIG
 125         # $feature{'blame'}{'default'} = [1];
 126         # To have project specific config enable override in $GITWEB_CONFIG
 127         # $feature{'blame'}{'override'} = 1;
 128         # and in project config gitweb.blame = 0|1;
 129         'blame' => {
 130                 'sub' => \&feature_blame,
 131                 'override' => 0,
 132                 'default' => [0]},
 133
 134         # Enable the 'snapshot' link, providing a compressed tarball of any
 135         # tree. This can potentially generate high traffic if you have large
 136         # project.
 137
 138         # To disable system wide have in $GITWEB_CONFIG
 139         # $feature{'snapshot'}{'default'} = [undef];
 140         # To have project specific config enable override in $GITWEB_CONFIG
 141         # $feature{'snapshot'}{'override'} = 1;
 142         # and in project config gitweb.snapshot = none|gzip|bzip2|zip;
 143         'snapshot' => {
 144                 'sub' => \&feature_snapshot,
 145                 'override' => 0,
 146                 #         => [content-encoding, suffix, program]
 147                 'default' => ['x-gzip', 'gz', 'gzip']},
 148
 149         # Enable text search, which will list the commits which match author,
 150         # committer or commit text to a given string.  Enabled by default.
 151         # Project specific override is not supported.
 152         'search' => {
 153                 'override' => 0,
 154                 'default' => [1]},
 155
 156         # Enable grep search, which will list the files in currently selected
 157         # tree containing the given string. Enabled by default. This can be
 158         # potentially CPU-intensive, of course.
 159
 160         # To enable system wide have in $GITWEB_CONFIG
 161         # $feature{'grep'}{'default'} = [1];
 162         # To have project specific config enable override in $GITWEB_CONFIG
 163         # $feature{'grep'}{'override'} = 1;
 164         # and in project config gitweb.grep = 0|1;
 165         'grep' => {
 166                 'override' => 0,
 167                 'default' => [1]},
 168
 169         # Enable the pickaxe search, which will list the commits that modified
 170         # a given string in a file. This can be practical and quite faster
 171         # alternative to 'blame', but still potentially CPU-intensive.
 172
 173         # To enable system wide have in $GITWEB_CONFIG
 174         # $feature{'pickaxe'}{'default'} = [1];
 175         # To have project specific config enable override in $GITWEB_CONFIG
 176         # $feature{'pickaxe'}{'override'} = 1;
 177         # and in project config gitweb.pickaxe = 0|1;
 178         'pickaxe' => {
 179                 'sub' => \&feature_pickaxe,
 180                 'override' => 0,
 181                 'default' => [1]},
 182
 183         # Make gitweb use an alternative format of the URLs which can be
 184         # more readable and natural-looking: project name is embedded
 185         # directly in the path and the query string contains other
 186         # auxiliary information. All gitweb installations recognize
 187         # URL in either format; this configures in which formats gitweb
 188         # generates links.
 189
 190         # To enable system wide have in $GITWEB_CONFIG
 191         # $feature{'pathinfo'}{'default'} = [1];
 192         # Project specific override is not supported.
 193
 194         # Note that you will need to change the default location of CSS,
 195         # favicon, logo and possibly other files to an absolute URL. Also,
 196         # if gitweb.cgi serves as your indexfile, you will need to force
 197         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 198         'pathinfo' => {
 199                 'override' => 0,
 200                 'default' => [0]},
 201
 202         # Make gitweb consider projects in project root subdirectories
 203         # to be forks of existing projects. Given project $projname.git,
 204         # projects matching $projname/*.git will not be shown in the main
 205         # projects list, instead a '+' mark will be added to $projname
 206         # there and a 'forks' view will be enabled for the project, listing
 207         # all the forks. If project list is taken from a file, forks have
 208         # to be listed after the main project.
 209
 210         # To enable system wide have in $GITWEB_CONFIG
 211         # $feature{'forks'}{'default'} = [1];
 212         # Project specific override is not supported.
 213         'forks' => {
 214                 'override' => 0,
 215                 'default' => [0]},
 216 );
 217
 218 sub gitweb_check_feature {
 219         my ($name) = @_;
 220         return unless exists $feature{$name};
 221         my ($sub, $override, @defaults) = (
 222                 $feature{$name}{'sub'},
 223                 $feature{$name}{'override'},
 224                 @{$feature{$name}{'default'}});
 225         if (!$override) { return @defaults; }
 226         if (!defined $sub) {
 227                 warn "feature $name is not overrideable";
 228                 return @defaults;
 229         }
 230         return $sub->(@defaults);
 231 }
 232
 233 sub feature_blame {
 234         my ($val) = git_get_project_config('blame', '--bool');
 235
 236         if ($val eq 'true') {
 237                 return 1;
 238         } elsif ($val eq 'false') {
 239                 return 0;
 240         }
 241
 242         return $_[0];
 243 }
 244
 245 sub feature_snapshot {
 246         my ($ctype, $suffix, $command) = @_;
 247
 248         my ($val) = git_get_project_config('snapshot');
 249
 250         if ($val eq 'gzip') {
 251                 return ('x-gzip', 'gz', 'gzip');
 252         } elsif ($val eq 'bzip2') {
 253                 return ('x-bzip2', 'bz2', 'bzip2');
 254         } elsif ($val eq 'zip') {
 255                 return ('x-zip', 'zip', '');
 256         } elsif ($val eq 'none') {
 257                 return ();
 258         }
 259
 260         return ($ctype, $suffix, $command);
 261 }
 262
 263 sub gitweb_have_snapshot {
 264         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 265         my $have_snapshot = (defined $ctype && defined $suffix);
 266
 267         return $have_snapshot;
 268 }
 269
 270 sub feature_grep {
 271         my ($val) = git_get_project_config('grep', '--bool');
 272
 273         if ($val eq 'true') {
 274                 return (1);
 275         } elsif ($val eq 'false') {
 276                 return (0);
 277         }
 278
 279         return ($_[0]);
 280 }
 281
 282 sub feature_pickaxe {
 283         my ($val) = git_get_project_config('pickaxe', '--bool');
 284
 285         if ($val eq 'true') {
 286                 return (1);
 287         } elsif ($val eq 'false') {
 288                 return (0);
 289         }
 290
 291         return ($_[0]);
 292 }
 293
 294 # checking HEAD file with -e is fragile if the repository was
 295 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 296 # and then pruned.
 297 sub check_head_link {
 298         my ($dir) = @_;
 299         my $headfile = "$dir/HEAD";
 300         return ((-e $headfile) ||
 301                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 302 }
 303
 304 sub check_export_ok {
 305         my ($dir) = @_;
 306         return (check_head_link($dir) &&
 307                 (!$export_ok || -e "$dir/$export_ok"));
 308 }
 309
 310 # rename detection options for git-diff and git-diff-tree
 311 # - default is '-M', with the cost proportional to
 312 #   (number of removed files) * (number of new files).
 313 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 314 #   (number of changed files + number of removed files) * (number of new files)
 315 # - even more costly is '-C', '--find-copies-harder' with cost
 316 #   (number of files in the original tree) * (number of new files)
 317 # - one might want to include '-B' option, e.g. '-B', '-M'
 318 our @diff_opts = ('-M'); # taken from git_commit
 319
 320 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 321 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 322
 323 # version of the core git binary
 324 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 325
 326 $projects_list ||= $projectroot;
 327
 328 # ======================================================================
 329 # input validation and dispatch
 330 our $action = $cgi->param('a');
 331 if (defined $action) {
 332         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 333                 die_error(undef, "Invalid action parameter");
 334         }
 335 }
 336
 337 # parameters which are pathnames
 338 our $project = $cgi->param('p');
 339 if (defined $project) {
 340         if (!validate_pathname($project) ||
 341             !(-d "$projectroot/$project") ||
 342             !check_head_link("$projectroot/$project") ||
 343             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 344             ($strict_export && !project_in_list($project))) {
 345                 undef $project;
 346                 die_error(undef, "No such project");
 347         }
 348 }
 349
 350 our $file_name = $cgi->param('f');
 351 if (defined $file_name) {
 352         if (!validate_pathname($file_name)) {
 353                 die_error(undef, "Invalid file parameter");
 354         }
 355 }
 356
 357 our $file_parent = $cgi->param('fp');
 358 if (defined $file_parent) {
 359         if (!validate_pathname($file_parent)) {
 360                 die_error(undef, "Invalid file parent parameter");
 361         }
 362 }
 363
 364 # parameters which are refnames
 365 our $hash = $cgi->param('h');
 366 if (defined $hash) {
 367         if (!validate_refname($hash)) {
 368                 die_error(undef, "Invalid hash parameter");
 369         }
 370 }
 371
 372 our $hash_parent = $cgi->param('hp');
 373 if (defined $hash_parent) {
 374         if (!validate_refname($hash_parent)) {
 375                 die_error(undef, "Invalid hash parent parameter");
 376         }
 377 }
 378
 379 our $hash_base = $cgi->param('hb');
 380 if (defined $hash_base) {
 381         if (!validate_refname($hash_base)) {
 382                 die_error(undef, "Invalid hash base parameter");
 383         }
 384 }
 385
 386 our $hash_parent_base = $cgi->param('hpb');
 387 if (defined $hash_parent_base) {
 388         if (!validate_refname($hash_parent_base)) {
 389                 die_error(undef, "Invalid hash parent base parameter");
 390         }
 391 }
 392
 393 # other parameters
 394 our $page = $cgi->param('pg');
 395 if (defined $page) {
 396         if ($page =~ m/[^0-9]/) {
 397                 die_error(undef, "Invalid page parameter");
 398         }
 399 }
 400
 401 our $searchtype = $cgi->param('st');
 402 if (defined $searchtype) {
 403         if ($searchtype =~ m/[^a-z]/) {
 404                 die_error(undef, "Invalid searchtype parameter");
 405         }
 406 }
 407
 408 our $searchtext = $cgi->param('s');
 409 our $search_regexp;
 410 if (defined $searchtext) {
 411         if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 412                 die_error(undef, "Invalid search parameter");
 413         }
 414         if (length($searchtext) < 2) {
 415                 die_error(undef, "At least two characters are required for search parameter");
 416         }
 417         $search_regexp = quotemeta $searchtext;
 418 }
 419
 420 # now read PATH_INFO and use it as alternative to parameters
 421 sub evaluate_path_info {
 422         return if defined $project;
 423         my $path_info = $ENV{"PATH_INFO"};
 424         return if !$path_info;
 425         $path_info =~ s,^/+,,;
 426         return if !$path_info;
 427         # find which part of PATH_INFO is project
 428         $project = $path_info;
 429         $project =~ s,/+$,,;
 430         while ($project && !check_head_link("$projectroot/$project")) {
 431                 $project =~ s,/*[^/]*$,,;
 432         }
 433         # validate project
 434         $project = validate_pathname($project);
 435         if (!$project ||
 436             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 437             ($strict_export && !project_in_list($project))) {
 438                 undef $project;
 439                 return;
 440         }
 441         # do not change any parameters if an action is given using the query string
 442         return if $action;
 443         $path_info =~ s,^$project/*,,;
 444         my ($refname, $pathname) = split(/:/, $path_info, 2);
 445         if (defined $pathname) {
 446                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 447                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 448                 $pathname =~ s,^/+,,;
 449                 if (!$pathname || substr($pathname, -1) eq "/") {
 450                         $action  ||= "tree";
 451                         $pathname =~ s,/$,,;
 452                 } else {
 453                         $action  ||= "blob_plain";
 454                 }
 455                 $hash_base ||= validate_refname($refname);
 456                 $file_name ||= validate_pathname($pathname);
 457         } elsif (defined $refname) {
 458                 # we got "project.git/branch"
 459                 $action ||= "shortlog";
 460                 $hash   ||= validate_refname($refname);
 461         }
 462 }
 463 evaluate_path_info();
 464
 465 # path to the current git repository
 466 our $git_dir;
 467 $git_dir = "$projectroot/$project" if $project;
 468
 469 # dispatch
 470 my %actions = (
 471         "blame" => \&git_blame2,
 472         "blobdiff" => \&git_blobdiff,
 473         "blobdiff_plain" => \&git_blobdiff_plain,
 474         "blob" => \&git_blob,
 475         "blob_plain" => \&git_blob_plain,
 476         "commitdiff" => \&git_commitdiff,
 477         "commitdiff_plain" => \&git_commitdiff_plain,
 478         "commit" => \&git_commit,
 479         "forks" => \&git_forks,
 480         "heads" => \&git_heads,
 481         "history" => \&git_history,
 482         "log" => \&git_log,
 483         "rss" => \&git_rss,
 484         "atom" => \&git_atom,
 485         "search" => \&git_search,
 486         "search_help" => \&git_search_help,
 487         "shortlog" => \&git_shortlog,
 488         "summary" => \&git_summary,
 489         "tag" => \&git_tag,
 490         "tags" => \&git_tags,
 491         "tree" => \&git_tree,
 492         "snapshot" => \&git_snapshot,
 493         "object" => \&git_object,
 494         # those below don't need $project
 495         "opml" => \&git_opml,
 496         "project_list" => \&git_project_list,
 497         "project_index" => \&git_project_index,
 498 );
 499
 500 if (!defined $action) {
 501         if (defined $hash) {
 502                 $action = git_get_type($hash);
 503         } elsif (defined $hash_base && defined $file_name) {
 504                 $action = git_get_type("$hash_base:$file_name");
 505         } elsif (defined $project) {
 506                 $action = 'summary';
 507         } else {
 508                 $action = 'project_list';
 509         }
 510 }
 511 if (!defined($actions{$action})) {
 512         die_error(undef, "Unknown action");
 513 }
 514 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 515     !$project) {
 516         die_error(undef, "Project needed");
 517 }
 518 $actions{$action}->();
 519 exit;
 520
 521 ## ======================================================================
 522 ## action links
 523
 524 sub href(%) {
 525         my %params = @_;
 526         # default is to use -absolute url() i.e. $my_uri
 527         my $href = $params{-full} ? $my_url : $my_uri;
 528
 529         # XXX: Warning: If you touch this, check the search form for updating,
 530         # too.
 531
 532         my @mapping = (
 533                 project => "p",
 534                 action => "a",
 535                 file_name => "f",
 536                 file_parent => "fp",
 537                 hash => "h",
 538                 hash_parent => "hp",
 539                 hash_base => "hb",
 540                 hash_parent_base => "hpb",
 541                 page => "pg",
 542                 order => "o",
 543                 searchtext => "s",
 544                 searchtype => "st",
 545         );
 546         my %mapping = @mapping;
 547
 548         $params{'project'} = $project unless exists $params{'project'};
 549
 550         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 551         if ($use_pathinfo) {
 552                 # use PATH_INFO for project name
 553                 $href .= "/$params{'project'}" if defined $params{'project'};
 554                 delete $params{'project'};
 555
 556                 # Summary just uses the project path URL
 557                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 558                         delete $params{'action'};
 559                 }
 560         }
 561
 562         # now encode the parameters explicitly
 563         my @result = ();
 564         for (my $i = 0; $i < @mapping; $i += 2) {
 565                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 566                 if (defined $params{$name}) {
 567                         push @result, $symbol . "=" . esc_param($params{$name});
 568                 }
 569         }
 570         $href .= "?" . join(';', @result) if scalar @result;
 571
 572         return $href;
 573 }
 574
 575
 576 ## ======================================================================
 577 ## validation, quoting/unquoting and escaping
 578
 579 sub validate_pathname {
 580         my $input = shift || return undef;
 581
 582         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 583         # at the beginning, at the end, and between slashes.
 584         # also this catches doubled slashes
 585         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 586                 return undef;
 587         }
 588         # no null characters
 589         if ($input =~ m!\0!) {
 590                 return undef;
 591         }
 592         return $input;
 593 }
 594
 595 sub validate_refname {
 596         my $input = shift || return undef;
 597
 598         # textual hashes are O.K.
 599         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 600                 return $input;
 601         }
 602         # it must be correct pathname
 603         $input = validate_pathname($input)
 604                 or return undef;
 605         # restrictions on ref name according to git-check-ref-format
 606         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 607                 return undef;
 608         }
 609         return $input;
 610 }
 611
 612 # decode sequences of octets in utf8 into Perl's internal form,
 613 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 614 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 615 sub to_utf8 {
 616         my $str = shift;
 617         my $res;
 618         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 619         if (defined $res) {
 620                 return $res;
 621         } else {
 622                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 623         }
 624 }
 625
 626 # quote unsafe chars, but keep the slash, even when it's not
 627 # correct, but quoted slashes look too horrible in bookmarks
 628 sub esc_param {
 629         my $str = shift;
 630         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 631         $str =~ s/\+/%2B/g;
 632         $str =~ s/ /\+/g;
 633         return $str;
 634 }
 635
 636 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 637 sub esc_url {
 638         my $str = shift;
 639         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 640         $str =~ s/\+/%2B/g;
 641         $str =~ s/ /\+/g;
 642         return $str;
 643 }
 644
 645 # replace invalid utf8 character with SUBSTITUTION sequence
 646 sub esc_html ($;%) {
 647         my $str = shift;
 648         my %opts = @_;
 649
 650         $str = to_utf8($str);
 651         $str = $cgi->escapeHTML($str);
 652         if ($opts{'-nbsp'}) {
 653                 $str =~ s/ /&nbsp;/g;
 654         }
 655         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 656         return $str;
 657 }
 658
 659 # quote control characters and escape filename to HTML
 660 sub esc_path {
 661         my $str = shift;
 662         my %opts = @_;
 663
 664         $str = to_utf8($str);
 665         $str = $cgi->escapeHTML($str);
 666         if ($opts{'-nbsp'}) {
 667                 $str =~ s/ /&nbsp;/g;
 668         }
 669         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 670         return $str;
 671 }
 672
 673 # Make control characters "printable", using character escape codes (CEC)
 674 sub quot_cec {
 675         my $cntrl = shift;
 676         my %es = ( # character escape codes, aka escape sequences
 677                    "\t" => '\t',   # tab            (HT)
 678                    "\n" => '\n',   # line feed      (LF)
 679                    "\r" => '\r',   # carrige return (CR)
 680                    "\f" => '\f',   # form feed      (FF)
 681                    "\b" => '\b',   # backspace      (BS)
 682                    "\a" => '\a',   # alarm (bell)   (BEL)
 683                    "\e" => '\e',   # escape         (ESC)
 684                    "\013" => '\v', # vertical tab   (VT)
 685                    "\000" => '\0', # nul character  (NUL)
 686                    );
 687         my $chr = ( (exists $es{$cntrl})
 688                     ? $es{$cntrl}
 689                     : sprintf('\%03o', ord($cntrl)) );
 690         return "<span class=\"cntrl\">$chr</span>";
 691 }
 692
 693 # Alternatively use unicode control pictures codepoints,
 694 # Unicode "printable representation" (PR)
 695 sub quot_upr {
 696         my $cntrl = shift;
 697         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 698         return "<span class=\"cntrl\">$chr</span>";
 699 }
 700
 701 # git may return quoted and escaped filenames
 702 sub unquote {
 703         my $str = shift;
 704
 705         sub unq {
 706                 my $seq = shift;
 707                 my %es = ( # character escape codes, aka escape sequences
 708                         't' => "\t",   # tab            (HT, TAB)
 709                         'n' => "\n",   # newline        (NL)
 710                         'r' => "\r",   # return         (CR)
 711                         'f' => "\f",   # form feed      (FF)
 712                         'b' => "\b",   # backspace      (BS)
 713                         'a' => "\a",   # alarm (bell)   (BEL)
 714                         'e' => "\e",   # escape         (ESC)
 715                         'v' => "\013", # vertical tab   (VT)
 716                 );
 717
 718                 if ($seq =~ m/^[0-7]{1,3}$/) {
 719                         # octal char sequence
 720                         return chr(oct($seq));
 721                 } elsif (exists $es{$seq}) {
 722                         # C escape sequence, aka character escape code
 723                         return $es{$seq}
 724                 }
 725                 # quoted ordinary character
 726                 return $seq;
 727         }
 728
 729         if ($str =~ m/^"(.*)"$/) {
 730                 # needs unquoting
 731                 $str = $1;
 732                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 733         }
 734         return $str;
 735 }
 736
 737 # escape tabs (convert tabs to spaces)
 738 sub untabify {
 739         my $line = shift;
 740
 741         while ((my $pos = index($line, "\t")) != -1) {
 742                 if (my $count = (8 - ($pos % 8))) {
 743                         my $spaces = ' ' x $count;
 744                         $line =~ s/\t/$spaces/;
 745                 }
 746         }
 747
 748         return $line;
 749 }
 750
 751 sub project_in_list {
 752         my $project = shift;
 753         my @list = git_get_projects_list();
 754         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 755 }
 756
 757 ## ----------------------------------------------------------------------
 758 ## HTML aware string manipulation
 759
 760 sub chop_str {
 761         my $str = shift;
 762         my $len = shift;
 763         my $add_len = shift || 10;
 764
 765         # allow only $len chars, but don't cut a word if it would fit in $add_len
 766         # if it doesn't fit, cut it if it's still longer than the dots we would add
 767         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 768         my $body = $1;
 769         my $tail = $2;
 770         if (length($tail) > 4) {
 771                 $tail = " ...";
 772                 $body =~ s/&[^;]*$//; # remove chopped character entities
 773         }
 774         return "$body$tail";
 775 }
 776
 777 ## ----------------------------------------------------------------------
 778 ## functions returning short strings
 779
 780 # CSS class for given age value (in seconds)
 781 sub age_class {
 782         my $age = shift;
 783
 784         if (!defined $age) {
 785                 return "noage";
 786         } elsif ($age < 60*60*2) {
 787                 return "age0";
 788         } elsif ($age < 60*60*24*2) {
 789                 return "age1";
 790         } else {
 791                 return "age2";
 792         }
 793 }
 794
 795 # convert age in seconds to "nn units ago" string
 796 sub age_string {
 797         my $age = shift;
 798         my $age_str;
 799
 800         if ($age > 60*60*24*365*2) {
 801                 $age_str = (int $age/60/60/24/365);
 802                 $age_str .= " years ago";
 803         } elsif ($age > 60*60*24*(365/12)*2) {
 804                 $age_str = int $age/60/60/24/(365/12);
 805                 $age_str .= " months ago";
 806         } elsif ($age > 60*60*24*7*2) {
 807                 $age_str = int $age/60/60/24/7;
 808                 $age_str .= " weeks ago";
 809         } elsif ($age > 60*60*24*2) {
 810                 $age_str = int $age/60/60/24;
 811                 $age_str .= " days ago";
 812         } elsif ($age > 60*60*2) {
 813                 $age_str = int $age/60/60;
 814                 $age_str .= " hours ago";
 815         } elsif ($age > 60*2) {
 816                 $age_str = int $age/60;
 817                 $age_str .= " min ago";
 818         } elsif ($age > 2) {
 819                 $age_str = int $age;
 820                 $age_str .= " sec ago";
 821         } else {
 822                 $age_str .= " right now";
 823         }
 824         return $age_str;
 825 }
 826
 827 # convert file mode in octal to symbolic file mode string
 828 sub mode_str {
 829         my $mode = oct shift;
 830
 831         if (S_ISDIR($mode & S_IFMT)) {
 832                 return 'drwxr-xr-x';
 833         } elsif (S_ISLNK($mode)) {
 834                 return 'lrwxrwxrwx';
 835         } elsif (S_ISREG($mode)) {
 836                 # git cares only about the executable bit
 837                 if ($mode & S_IXUSR) {
 838                         return '-rwxr-xr-x';
 839                 } else {
 840                         return '-rw-r--r--';
 841                 };
 842         } else {
 843                 return '----------';
 844         }
 845 }
 846
 847 # convert file mode in octal to file type string
 848 sub file_type {
 849         my $mode = shift;
 850
 851         if ($mode !~ m/^[0-7]+$/) {
 852                 return $mode;
 853         } else {
 854                 $mode = oct $mode;
 855         }
 856
 857         if (S_ISDIR($mode & S_IFMT)) {
 858                 return "directory";
 859         } elsif (S_ISLNK($mode)) {
 860                 return "symlink";
 861         } elsif (S_ISREG($mode)) {
 862                 return "file";
 863         } else {
 864                 return "unknown";
 865         }
 866 }
 867
 868 # convert file mode in octal to file type description string
 869 sub file_type_long {
 870         my $mode = shift;
 871
 872         if ($mode !~ m/^[0-7]+$/) {
 873                 return $mode;
 874         } else {
 875                 $mode = oct $mode;
 876         }
 877
 878         if (S_ISDIR($mode & S_IFMT)) {
 879                 return "directory";
 880         } elsif (S_ISLNK($mode)) {
 881                 return "symlink";
 882         } elsif (S_ISREG($mode)) {
 883                 if ($mode & S_IXUSR) {
 884                         return "executable";
 885                 } else {
 886                         return "file";
 887                 };
 888         } else {
 889                 return "unknown";
 890         }
 891 }
 892
 893
 894 ## ----------------------------------------------------------------------
 895 ## functions returning short HTML fragments, or transforming HTML fragments
 896 ## which don't belong to other sections
 897
 898 # format line of commit message.
 899 sub format_log_line_html {
 900         my $line = shift;
 901
 902         $line = esc_html($line, -nbsp=>1);
 903         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 904                 my $hash_text = $1;
 905                 my $link =
 906                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 907                                 -class => "text"}, $hash_text);
 908                 $line =~ s/$hash_text/$link/;
 909         }
 910         return $line;
 911 }
 912
 913 # format marker of refs pointing to given object
 914 sub format_ref_marker {
 915         my ($refs, $id) = @_;
 916         my $markers = '';
 917
 918         if (defined $refs->{$id}) {
 919                 foreach my $ref (@{$refs->{$id}}) {
 920                         my ($type, $name) = qw();
 921                         # e.g. tags/v2.6.11 or heads/next
 922                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 923                                 $type = $1;
 924                                 $name = $2;
 925                         } else {
 926                                 $type = "ref";
 927                                 $name = $ref;
 928                         }
 929
 930                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 931                                     esc_html($name) . "</span>";
 932                 }
 933         }
 934
 935         if ($markers) {
 936                 return ' <span class="refs">'. $markers . '</span>';
 937         } else {
 938                 return "";
 939         }
 940 }
 941
 942 # format, perhaps shortened and with markers, title line
 943 sub format_subject_html {
 944         my ($long, $short, $href, $extra) = @_;
 945         $extra = '' unless defined($extra);
 946
 947         if (length($short) < length($long)) {
 948                 return $cgi->a({-href => $href, -class => "list subject",
 949                                 -title => to_utf8($long)},
 950                        esc_html($short) . $extra);
 951         } else {
 952                 return $cgi->a({-href => $href, -class => "list subject"},
 953                        esc_html($long)  . $extra);
 954         }
 955 }
 956
 957 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
 958 sub format_git_diff_header_line {
 959         my $line = shift;
 960         my $diffinfo = shift;
 961         my ($from, $to) = @_;
 962
 963         if ($diffinfo->{'nparents'}) {
 964                 # combined diff
 965                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
 966                 if ($to->{'href'}) {
 967                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 968                                          esc_path($to->{'file'}));
 969                 } else { # file was deleted (no href)
 970                         $line .= esc_path($to->{'file'});
 971                 }
 972         } else {
 973                 # "ordinary" diff
 974                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
 975                 if ($from->{'href'}) {
 976                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
 977                                          'a/' . esc_path($from->{'file'}));
 978                 } else { # file was added (no href)
 979                         $line .= 'a/' . esc_path($from->{'file'});
 980                 }
 981                 $line .= ' ';
 982                 if ($to->{'href'}) {
 983                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 984                                          'b/' . esc_path($to->{'file'}));
 985                 } else { # file was deleted
 986                         $line .= 'b/' . esc_path($to->{'file'});
 987                 }
 988         }
 989
 990         return "<div class=\"diff header\">$line</div>\n";
 991 }
 992
 993 # format extended diff header line, before patch itself
 994 sub format_extended_diff_header_line {
 995         my $line = shift;
 996         my $diffinfo = shift;
 997         my ($from, $to) = @_;
 998
 999         # match <path>
1000         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1001                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1002                                        esc_path($from->{'file'}));
1003         }
1004         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1005                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1006                                  esc_path($to->{'file'}));
1007         }
1008         # match single <mode>
1009         if ($line =~ m/\s(\d{6})$/) {
1010                 $line .= '<span class="info"> (' .
1011                          file_type_long($1) .
1012                          ')</span>';
1013         }
1014         # match <hash>
1015         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1016                 # can match only for combined diff
1017                 $line = 'index ';
1018                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1019                         if ($from->{'href'}[$i]) {
1020                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1021                                                   -class=>"hash"},
1022                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1023                         } else {
1024                                 $line .= '0' x 7;
1025                         }
1026                         # separator
1027                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1028                 }
1029                 $line .= '..';
1030                 if ($to->{'href'}) {
1031                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1032                                          substr($diffinfo->{'to_id'},0,7));
1033                 } else {
1034                         $line .= '0' x 7;
1035                 }
1036
1037         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1038                 # can match only for ordinary diff
1039                 my ($from_link, $to_link);
1040                 if ($from->{'href'}) {
1041                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1042                                              substr($diffinfo->{'from_id'},0,7));
1043                 } else {
1044                         $from_link = '0' x 7;
1045                 }
1046                 if ($to->{'href'}) {
1047                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1048                                            substr($diffinfo->{'to_id'},0,7));
1049                 } else {
1050                         $to_link = '0' x 7;
1051                 }
1052                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1053                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1054         }
1055
1056         return $line . "<br/>\n";
1057 }
1058
1059 # format from-file/to-file diff header
1060 sub format_diff_from_to_header {
1061         my ($from_line, $to_line, $diffinfo, $from, $to) = @_;
1062         my $line;
1063         my $result = '';
1064
1065         $line = $from_line;
1066         #assert($line =~ m/^---/) if DEBUG;
1067         # no extra formatting "^--- /dev/null"
1068         if ($line =~ m!^--- "?a/!) {
1069                 if (!$diffinfo->{'nparents'} && # multiple 'from'
1070                     $from->{'href'}) {
1071                         $line = '--- a/' .
1072                                 $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1073                                         esc_path($from->{'file'}));
1074                 } else {
1075                         $line = '--- a/' .
1076                                 esc_path($from->{'file'});
1077                 }
1078         }
1079         $result .= qq!<div class="diff from_file">$line</div>\n!;
1080
1081         $line = $to_line;
1082         #assert($line =~ m/^\+\+\+/) if DEBUG;
1083         # no extra formatting for "^+++ /dev/null"
1084         if ($line =~ m!^\+\+\+ "?b/!) {
1085                 if ($to->{'href'}) {
1086                         $line = '+++ b/' .
1087                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1088                                         esc_path($to->{'file'}));
1089                 } else {
1090                         $line = '+++ b/' .
1091                                 esc_path($to->{'file'});
1092                 }
1093         }
1094         $result .= qq!<div class="diff to_file">$line</div>\n!;
1095
1096         return $result;
1097 }
1098
1099 # format patch (diff) line (not to be used for diff headers)
1100 sub format_diff_line {
1101         my $line = shift;
1102         my ($from, $to) = @_;
1103         my $diff_class = "";
1104
1105         chomp $line;
1106
1107         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1108                 # combined diff
1109                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1110                 if ($line =~ m/^\@{3}/) {
1111                         $diff_class = " chunk_header";
1112                 } elsif ($line =~ m/^\\/) {
1113                         $diff_class = " incomplete";
1114                 } elsif ($prefix =~ tr/+/+/) {
1115                         $diff_class = " add";
1116                 } elsif ($prefix =~ tr/-/-/) {
1117                         $diff_class = " rem";
1118                 }
1119         } else {
1120                 # assume ordinary diff
1121                 my $char = substr($line, 0, 1);
1122                 if ($char eq '+') {
1123                         $diff_class = " add";
1124                 } elsif ($char eq '-') {
1125                         $diff_class = " rem";
1126                 } elsif ($char eq '@') {
1127                         $diff_class = " chunk_header";
1128                 } elsif ($char eq "\\") {
1129                         $diff_class = " incomplete";
1130                 }
1131         }
1132         $line = untabify($line);
1133         if ($from && $to && $line =~ m/^\@{2} /) {
1134                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1135                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1136
1137                 $from_lines = 0 unless defined $from_lines;
1138                 $to_lines   = 0 unless defined $to_lines;
1139
1140                 if ($from->{'href'}) {
1141                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1142                                              -class=>"list"}, $from_text);
1143                 }
1144                 if ($to->{'href'}) {
1145                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1146                                              -class=>"list"}, $to_text);
1147                 }
1148                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1149                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1150                 return "<div class=\"diff$diff_class\">$line</div>\n";
1151         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1152                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1153                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1154
1155                 @from_text = split(' ', $ranges);
1156                 for (my $i = 0; $i < @from_text; ++$i) {
1157                         ($from_start[$i], $from_nlines[$i]) =
1158                                 (split(',', substr($from_text[$i], 1)), 0);
1159                 }
1160
1161                 $to_text   = pop @from_text;
1162                 $to_start  = pop @from_start;
1163                 $to_nlines = pop @from_nlines;
1164
1165                 $line = "<span class=\"chunk_info\">$prefix ";
1166                 for (my $i = 0; $i < @from_text; ++$i) {
1167                         if ($from->{'href'}[$i]) {
1168                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1169                                                   -class=>"list"}, $from_text[$i]);
1170                         } else {
1171                                 $line .= $from_text[$i];
1172                         }
1173                         $line .= " ";
1174                 }
1175                 if ($to->{'href'}) {
1176                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1177                                           -class=>"list"}, $to_text);
1178                 } else {
1179                         $line .= $to_text;
1180                 }
1181                 $line .= " $prefix</span>" .
1182                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1183                 return "<div class=\"diff$diff_class\">$line</div>\n";
1184         }
1185         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1186 }
1187
1188 ## ----------------------------------------------------------------------
1189 ## git utility subroutines, invoking git commands
1190
1191 # returns path to the core git executable and the --git-dir parameter as list
1192 sub git_cmd {
1193         return $GIT, '--git-dir='.$git_dir;
1194 }
1195
1196 # returns path to the core git executable and the --git-dir parameter as string
1197 sub git_cmd_str {
1198         return join(' ', git_cmd());
1199 }
1200
1201 # get HEAD ref of given project as hash
1202 sub git_get_head_hash {
1203         my $project = shift;
1204         my $o_git_dir = $git_dir;
1205         my $retval = undef;
1206         $git_dir = "$projectroot/$project";
1207         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1208                 my $head = <$fd>;
1209                 close $fd;
1210                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1211                         $retval = $1;
1212                 }
1213         }
1214         if (defined $o_git_dir) {
1215                 $git_dir = $o_git_dir;
1216         }
1217         return $retval;
1218 }
1219
1220 # get type of given object
1221 sub git_get_type {
1222         my $hash = shift;
1223
1224         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1225         my $type = <$fd>;
1226         close $fd or return;
1227         chomp $type;
1228         return $type;
1229 }
1230
1231 sub git_get_project_config {
1232         my ($key, $type) = @_;
1233
1234         return unless ($key);
1235         $key =~ s/^gitweb\.//;
1236         return if ($key =~ m/\W/);
1237
1238         my @x = (git_cmd(), 'config');
1239         if (defined $type) { push @x, $type; }
1240         push @x, "--get";
1241         push @x, "gitweb.$key";
1242         my $val = qx(@x);
1243         chomp $val;
1244         return ($val);
1245 }
1246
1247 # get hash of given path at given ref
1248 sub git_get_hash_by_path {
1249         my $base = shift;
1250         my $path = shift || return undef;
1251         my $type = shift;
1252
1253         $path =~ s,/+$,,;
1254
1255         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1256                 or die_error(undef, "Open git-ls-tree failed");
1257         my $line = <$fd>;
1258         close $fd or return undef;
1259
1260         if (!defined $line) {
1261                 # there is no tree or hash given by $path at $base
1262                 return undef;
1263         }
1264
1265         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1266         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1267         if (defined $type && $type ne $2) {
1268                 # type doesn't match
1269                 return undef;
1270         }
1271         return $3;
1272 }
1273
1274 # get path of entry with given hash at given tree-ish (ref)
1275 # used to get 'from' filename for combined diff (merge commit) for renames
1276 sub git_get_path_by_hash {
1277         my $base = shift || return;
1278         my $hash = shift || return;
1279
1280         local $/ = "\0";
1281
1282         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1283                 or return undef;
1284         while (my $line = <$fd>) {
1285                 chomp $line;
1286
1287                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1288                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1289                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1290                         close $fd;
1291                         return $1;
1292                 }
1293         }
1294         close $fd;
1295         return undef;
1296 }
1297
1298 ## ......................................................................
1299 ## git utility functions, directly accessing git repository
1300
1301 sub git_get_project_description {
1302         my $path = shift;
1303
1304         open my $fd, "$projectroot/$path/description" or return undef;
1305         my $descr = <$fd>;
1306         close $fd;
1307         if (defined $descr) {
1308                 chomp $descr;
1309         }
1310         return $descr;
1311 }
1312
1313 sub git_get_project_url_list {
1314         my $path = shift;
1315
1316         open my $fd, "$projectroot/$path/cloneurl" or return;
1317         my @git_project_url_list = map { chomp; $_ } <$fd>;
1318         close $fd;
1319
1320         return wantarray ? @git_project_url_list : \@git_project_url_list;
1321 }
1322
1323 sub git_get_projects_list {
1324         my ($filter) = @_;
1325         my @list;
1326
1327         $filter ||= '';
1328         $filter =~ s/\.git$//;
1329
1330         my ($check_forks) = gitweb_check_feature('forks');
1331
1332         if (-d $projects_list) {
1333                 # search in directory
1334                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1335                 # remove the trailing "/"
1336                 $dir =~ s!/+$!!;
1337                 my $pfxlen = length("$dir");
1338
1339                 File::Find::find({
1340                         follow_fast => 1, # follow symbolic links
1341                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1342                         wanted => sub {
1343                                 # skip project-list toplevel, if we get it.
1344                                 return if (m!^[/.]$!);
1345                                 # only directories can be git repositories
1346                                 return unless (-d $_);
1347
1348                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1349                                 # we check related file in $projectroot
1350                                 if ($check_forks and $subdir =~ m#/.#) {
1351                                         $File::Find::prune = 1;
1352                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1353                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1354                                         $File::Find::prune = 1;
1355                                 }
1356                         },
1357                 }, "$dir");
1358
1359         } elsif (-f $projects_list) {
1360                 # read from file(url-encoded):
1361                 # 'git%2Fgit.git Linus+Torvalds'
1362                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1363                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1364                 my %paths;
1365                 open my ($fd), $projects_list or return;
1366         PROJECT:
1367                 while (my $line = <$fd>) {
1368                         chomp $line;
1369                         my ($path, $owner) = split ' ', $line;
1370                         $path = unescape($path);
1371                         $owner = unescape($owner);
1372                         if (!defined $path) {
1373                                 next;
1374                         }
1375                         if ($filter ne '') {
1376                                 # looking for forks;
1377                                 my $pfx = substr($path, 0, length($filter));
1378                                 if ($pfx ne $filter) {
1379                                         next PROJECT;
1380                                 }
1381                                 my $sfx = substr($path, length($filter));
1382                                 if ($sfx !~ /^\/.*\.git$/) {
1383                                         next PROJECT;
1384                                 }
1385                         } elsif ($check_forks) {
1386                         PATH:
1387                                 foreach my $filter (keys %paths) {
1388                                         # looking for forks;
1389                                         my $pfx = substr($path, 0, length($filter));
1390                                         if ($pfx ne $filter) {
1391                                                 next PATH;
1392                                         }
1393                                         my $sfx = substr($path, length($filter));
1394                                         if ($sfx !~ /^\/.*\.git$/) {
1395                                                 next PATH;
1396                                         }
1397                                         # is a fork, don't include it in
1398                                         # the list
1399                                         next PROJECT;
1400                                 }
1401                         }
1402                         if (check_export_ok("$projectroot/$path")) {
1403                                 my $pr = {
1404                                         path => $path,
1405                                         owner => to_utf8($owner),
1406                                 };
1407                                 push @list, $pr;
1408                                 (my $forks_path = $path) =~ s/\.git$//;
1409                                 $paths{$forks_path}++;
1410                         }
1411                 }
1412                 close $fd;
1413         }
1414         return @list;
1415 }
1416
1417 sub git_get_project_owner {
1418         my $project = shift;
1419         my $owner;
1420
1421         return undef unless $project;
1422
1423         # read from file (url-encoded):
1424         # 'git%2Fgit.git Linus+Torvalds'
1425         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1426         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1427         if (-f $projects_list) {
1428                 open (my $fd , $projects_list);
1429                 while (my $line = <$fd>) {
1430                         chomp $line;
1431                         my ($pr, $ow) = split ' ', $line;
1432                         $pr = unescape($pr);
1433                         $ow = unescape($ow);
1434                         if ($pr eq $project) {
1435                                 $owner = to_utf8($ow);
1436                                 last;
1437                         }
1438                 }
1439                 close $fd;
1440         }
1441         if (!defined $owner) {
1442                 $owner = get_file_owner("$projectroot/$project");
1443         }
1444
1445         return $owner;
1446 }
1447
1448 sub git_get_last_activity {
1449         my ($path) = @_;
1450         my $fd;
1451
1452         $git_dir = "$projectroot/$path";
1453         open($fd, "-|", git_cmd(), 'for-each-ref',
1454              '--format=%(committer)',
1455              '--sort=-committerdate',
1456              '--count=1',
1457              'refs/heads') or return;
1458         my $most_recent = <$fd>;
1459         close $fd or return;
1460         if (defined $most_recent &&
1461             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1462                 my $timestamp = $1;
1463                 my $age = time - $timestamp;
1464                 return ($age, age_string($age));
1465         }
1466 }
1467
1468 sub git_get_references {
1469         my $type = shift || "";
1470         my %refs;
1471         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1472         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1473         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1474                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1475                 or return;
1476
1477         while (my $line = <$fd>) {
1478                 chomp $line;
1479                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1480                         if (defined $refs{$1}) {
1481                                 push @{$refs{$1}}, $2;
1482                         } else {
1483                                 $refs{$1} = [ $2 ];
1484                         }
1485                 }
1486         }
1487         close $fd or return;
1488         return \%refs;
1489 }
1490
1491 sub git_get_rev_name_tags {
1492         my $hash = shift || return undef;
1493
1494         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1495                 or return;
1496         my $name_rev = <$fd>;
1497         close $fd;
1498
1499         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1500                 return $1;
1501         } else {
1502                 # catches also '$hash undefined' output
1503                 return undef;
1504         }
1505 }
1506
1507 ## ----------------------------------------------------------------------
1508 ## parse to hash functions
1509
1510 sub parse_date {
1511         my $epoch = shift;
1512         my $tz = shift || "-0000";
1513
1514         my %date;
1515         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1516         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1517         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1518         $date{'hour'} = $hour;
1519         $date{'minute'} = $min;
1520         $date{'mday'} = $mday;
1521         $date{'day'} = $days[$wday];
1522         $date{'month'} = $months[$mon];
1523         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1524                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1525         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1526                              $mday, $months[$mon], $hour ,$min;
1527         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1528                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1529
1530         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1531         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1532         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1533         $date{'hour_local'} = $hour;
1534         $date{'minute_local'} = $min;
1535         $date{'tz_local'} = $tz;
1536         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1537                                   1900+$year, $mon+1, $mday,
1538                                   $hour, $min, $sec, $tz);
1539         return %date;
1540 }
1541
1542 sub parse_tag {
1543         my $tag_id = shift;
1544         my %tag;
1545         my @comment;
1546
1547         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1548         $tag{'id'} = $tag_id;
1549         while (my $line = <$fd>) {
1550                 chomp $line;
1551                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1552                         $tag{'object'} = $1;
1553                 } elsif ($line =~ m/^type (.+)$/) {
1554                         $tag{'type'} = $1;
1555                 } elsif ($line =~ m/^tag (.+)$/) {
1556                         $tag{'name'} = $1;
1557                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1558                         $tag{'author'} = $1;
1559                         $tag{'epoch'} = $2;
1560                         $tag{'tz'} = $3;
1561                 } elsif ($line =~ m/--BEGIN/) {
1562                         push @comment, $line;
1563                         last;
1564                 } elsif ($line eq "") {
1565                         last;
1566                 }
1567         }
1568         push @comment, <$fd>;
1569         $tag{'comment'} = \@comment;
1570         close $fd or return;
1571         if (!defined $tag{'name'}) {
1572                 return
1573         };
1574         return %tag
1575 }
1576
1577 sub parse_commit_text {
1578         my ($commit_text, $withparents) = @_;
1579         my @commit_lines = split '\n', $commit_text;
1580         my %co;
1581
1582         pop @commit_lines; # Remove '\0'
1583
1584         if (! @commit_lines) {
1585                 return;
1586         }
1587
1588         my $header = shift @commit_lines;
1589         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1590                 return;
1591         }
1592         ($co{'id'}, my @parents) = split ' ', $header;
1593         while (my $line = shift @commit_lines) {
1594                 last if $line eq "\n";
1595                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1596                         $co{'tree'} = $1;
1597                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1598                         push @parents, $1;
1599                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1600                         $co{'author'} = $1;
1601                         $co{'author_epoch'} = $2;
1602                         $co{'author_tz'} = $3;
1603                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1604                                 $co{'author_name'}  = $1;
1605                                 $co{'author_email'} = $2;
1606                         } else {
1607                                 $co{'author_name'} = $co{'author'};
1608                         }
1609                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1610                         $co{'committer'} = $1;
1611                         $co{'committer_epoch'} = $2;
1612                         $co{'committer_tz'} = $3;
1613                         $co{'committer_name'} = $co{'committer'};
1614                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1615                                 $co{'committer_name'}  = $1;
1616                                 $co{'committer_email'} = $2;
1617                         } else {
1618                                 $co{'committer_name'} = $co{'committer'};
1619                         }
1620                 }
1621         }
1622         if (!defined $co{'tree'}) {
1623                 return;
1624         };
1625         $co{'parents'} = \@parents;
1626         $co{'parent'} = $parents[0];
1627
1628         foreach my $title (@commit_lines) {
1629                 $title =~ s/^    //;
1630                 if ($title ne "") {
1631                         $co{'title'} = chop_str($title, 80, 5);
1632                         # remove leading stuff of merges to make the interesting part visible
1633                         if (length($title) > 50) {
1634                                 $title =~ s/^Automatic //;
1635                                 $title =~ s/^merge (of|with) /Merge ... /i;
1636                                 if (length($title) > 50) {
1637                                         $title =~ s/(http|rsync):\/\///;
1638                                 }
1639                                 if (length($title) > 50) {
1640                                         $title =~ s/(master|www|rsync)\.//;
1641                                 }
1642                                 if (length($title) > 50) {
1643                                         $title =~ s/kernel.org:?//;
1644                                 }
1645                                 if (length($title) > 50) {
1646                                         $title =~ s/\/pub\/scm//;
1647                                 }
1648                         }
1649                         $co{'title_short'} = chop_str($title, 50, 5);
1650                         last;
1651                 }
1652         }
1653         if ($co{'title'} eq "") {
1654                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1655         }
1656         # remove added spaces
1657         foreach my $line (@commit_lines) {
1658                 $line =~ s/^    //;
1659         }
1660         $co{'comment'} = \@commit_lines;
1661
1662         my $age = time - $co{'committer_epoch'};
1663         $co{'age'} = $age;
1664         $co{'age_string'} = age_string($age);
1665         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1666         if ($age > 60*60*24*7*2) {
1667                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1668                 $co{'age_string_age'} = $co{'age_string'};
1669         } else {
1670                 $co{'age_string_date'} = $co{'age_string'};
1671                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1672         }
1673         return %co;
1674 }
1675
1676 sub parse_commit {
1677         my ($commit_id) = @_;
1678         my %co;
1679
1680         local $/ = "\0";
1681
1682         open my $fd, "-|", git_cmd(), "rev-list",
1683                 "--parents",
1684                 "--header",
1685                 "--max-count=1",
1686                 $commit_id,
1687                 "--",
1688                 or die_error(undef, "Open git-rev-list failed");
1689         %co = parse_commit_text(<$fd>, 1);
1690         close $fd;
1691
1692         return %co;
1693 }
1694
1695 sub parse_commits {
1696         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1697         my @cos;
1698
1699         $maxcount ||= 1;
1700         $skip ||= 0;
1701
1702         local $/ = "\0";
1703
1704         open my $fd, "-|", git_cmd(), "rev-list",
1705                 "--header",
1706                 ($arg ? ($arg) : ()),
1707                 ("--max-count=" . $maxcount),
1708                 ("--skip=" . $skip),
1709                 $commit_id,
1710                 "--",
1711                 ($filename ? ($filename) : ())
1712                 or die_error(undef, "Open git-rev-list failed");
1713         while (my $line = <$fd>) {
1714                 my %co = parse_commit_text($line);
1715                 push @cos, \%co;
1716         }
1717         close $fd;
1718
1719         return wantarray ? @cos : \@cos;
1720 }
1721
1722 # parse ref from ref_file, given by ref_id, with given type
1723 sub parse_ref {
1724         my $ref_file = shift;
1725         my $ref_id = shift;
1726         my $type = shift || git_get_type($ref_id);
1727         my %ref_item;
1728
1729         $ref_item{'type'} = $type;
1730         $ref_item{'id'} = $ref_id;
1731         $ref_item{'epoch'} = 0;
1732         $ref_item{'age'} = "unknown";
1733         if ($type eq "tag") {
1734                 my %tag = parse_tag($ref_id);
1735                 $ref_item{'comment'} = $tag{'comment'};
1736                 if ($tag{'type'} eq "commit") {
1737                         my %co = parse_commit($tag{'object'});
1738                         $ref_item{'epoch'} = $co{'committer_epoch'};
1739                         $ref_item{'age'} = $co{'age_string'};
1740                 } elsif (defined($tag{'epoch'})) {
1741                         my $age = time - $tag{'epoch'};
1742                         $ref_item{'epoch'} = $tag{'epoch'};
1743                         $ref_item{'age'} = age_string($age);
1744                 }
1745                 $ref_item{'reftype'} = $tag{'type'};
1746                 $ref_item{'name'} = $tag{'name'};
1747                 $ref_item{'refid'} = $tag{'object'};
1748         } elsif ($type eq "commit"){
1749                 my %co = parse_commit($ref_id);
1750                 $ref_item{'reftype'} = "commit";
1751                 $ref_item{'name'} = $ref_file;
1752                 $ref_item{'title'} = $co{'title'};
1753                 $ref_item{'refid'} = $ref_id;
1754                 $ref_item{'epoch'} = $co{'committer_epoch'};
1755                 $ref_item{'age'} = $co{'age_string'};
1756         } else {
1757                 $ref_item{'reftype'} = $type;
1758                 $ref_item{'name'} = $ref_file;
1759                 $ref_item{'refid'} = $ref_id;
1760         }
1761
1762         return %ref_item;
1763 }
1764
1765 # parse line of git-diff-tree "raw" output
1766 sub parse_difftree_raw_line {
1767         my $line = shift;
1768         my %res;
1769
1770         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1771         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1772         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1773                 $res{'from_mode'} = $1;
1774                 $res{'to_mode'} = $2;
1775                 $res{'from_id'} = $3;
1776                 $res{'to_id'} = $4;
1777                 $res{'status'} = $5;
1778                 $res{'similarity'} = $6;
1779                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1780                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1781                 } else {
1782                         $res{'file'} = unquote($7);
1783                 }
1784         }
1785         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1786         # combined diff (for merge commit)
1787         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1788                 $res{'nparents'}  = length($1);
1789                 $res{'from_mode'} = [ split(' ', $2) ];
1790                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1791                 $res{'from_id'} = [ split(' ', $3) ];
1792                 $res{'to_id'} = pop @{$res{'from_id'}};
1793                 $res{'status'} = [ split('', $4) ];
1794                 $res{'to_file'} = unquote($5);
1795         }
1796         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1797         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1798                 $res{'commit'} = $1;
1799         }
1800
1801         return wantarray ? %res : \%res;
1802 }
1803
1804 # parse line of git-ls-tree output
1805 sub parse_ls_tree_line ($;%) {
1806         my $line = shift;
1807         my %opts = @_;
1808         my %res;
1809
1810         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1811         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1812
1813         $res{'mode'} = $1;
1814         $res{'type'} = $2;
1815         $res{'hash'} = $3;
1816         if ($opts{'-z'}) {
1817                 $res{'name'} = $4;
1818         } else {
1819                 $res{'name'} = unquote($4);
1820         }
1821
1822         return wantarray ? %res : \%res;
1823 }
1824
1825 # generates _two_ hashes, references to which are passed as 2 and 3 argument
1826 sub parse_from_to_diffinfo {
1827         my ($diffinfo, $from, $to, @parents) = @_;
1828
1829         if ($diffinfo->{'nparents'}) {
1830                 # combined diff
1831                 $from->{'file'} = [];
1832                 $from->{'href'} = [];
1833                 fill_from_file_info($diffinfo, @parents)
1834                         unless exists $diffinfo->{'from_file'};
1835                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1836                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1837                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1838                                 $from->{'href'}[$i] = href(action=>"blob",
1839                                                            hash_base=>$parents[$i],
1840                                                            hash=>$diffinfo->{'from_id'}[$i],
1841                                                            file_name=>$from->{'file'}[$i]);
1842                         } else {
1843                                 $from->{'href'}[$i] = undef;
1844                         }
1845                 }
1846         } else {
1847                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1848                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
1849                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1850                                                hash=>$diffinfo->{'from_id'},
1851                                                file_name=>$from->{'file'});
1852                 } else {
1853                         delete $from->{'href'};
1854                 }
1855         }
1856
1857         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1858         if (!is_deleted($diffinfo)) { # file exists in result
1859                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1860                                      hash=>$diffinfo->{'to_id'},
1861                                      file_name=>$to->{'file'});
1862         } else {
1863                 delete $to->{'href'};
1864         }
1865 }
1866
1867 ## ......................................................................
1868 ## parse to array of hashes functions
1869
1870 sub git_get_heads_list {
1871         my $limit = shift;
1872         my @headslist;
1873
1874         open my $fd, '-|', git_cmd(), 'for-each-ref',
1875                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1876                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1877                 'refs/heads'
1878                 or return;
1879         while (my $line = <$fd>) {
1880                 my %ref_item;
1881
1882                 chomp $line;
1883                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1884                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1885                 my ($committer, $epoch, $tz) =
1886                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1887                 $name =~ s!^refs/heads/!!;
1888
1889                 $ref_item{'name'}  = $name;
1890                 $ref_item{'id'}    = $hash;
1891                 $ref_item{'title'} = $title || '(no commit message)';
1892                 $ref_item{'epoch'} = $epoch;
1893                 if ($epoch) {
1894                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1895                 } else {
1896                         $ref_item{'age'} = "unknown";
1897                 }
1898
1899                 push @headslist, \%ref_item;
1900         }
1901         close $fd;
1902
1903         return wantarray ? @headslist : \@headslist;
1904 }
1905
1906 sub git_get_tags_list {
1907         my $limit = shift;
1908         my @tagslist;
1909
1910         open my $fd, '-|', git_cmd(), 'for-each-ref',
1911                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1912                 '--format=%(objectname) %(objecttype) %(refname) '.
1913                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1914                 'refs/tags'
1915                 or return;
1916         while (my $line = <$fd>) {
1917                 my %ref_item;
1918
1919                 chomp $line;
1920                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1921                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1922                 my ($creator, $epoch, $tz) =
1923                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1924                 $name =~ s!^refs/tags/!!;
1925
1926                 $ref_item{'type'} = $type;
1927                 $ref_item{'id'} = $id;
1928                 $ref_item{'name'} = $name;
1929                 if ($type eq "tag") {
1930                         $ref_item{'subject'} = $title;
1931                         $ref_item{'reftype'} = $reftype;
1932                         $ref_item{'refid'}   = $refid;
1933                 } else {
1934                         $ref_item{'reftype'} = $type;
1935                         $ref_item{'refid'}   = $id;
1936                 }
1937
1938                 if ($type eq "tag" || $type eq "commit") {
1939                         $ref_item{'epoch'} = $epoch;
1940                         if ($epoch) {
1941                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1942                         } else {
1943                                 $ref_item{'age'} = "unknown";
1944                         }
1945                 }
1946
1947                 push @tagslist, \%ref_item;
1948         }
1949         close $fd;
1950
1951         return wantarray ? @tagslist : \@tagslist;
1952 }
1953
1954 ## ----------------------------------------------------------------------
1955 ## filesystem-related functions
1956
1957 sub get_file_owner {
1958         my $path = shift;
1959
1960         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1961         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1962         if (!defined $gcos) {
1963                 return undef;
1964         }
1965         my $owner = $gcos;
1966         $owner =~ s/[,;].*$//;
1967         return to_utf8($owner);
1968 }
1969
1970 ## ......................................................................
1971 ## mimetype related functions
1972
1973 sub mimetype_guess_file {
1974         my $filename = shift;
1975         my $mimemap = shift;
1976         -r $mimemap or return undef;
1977
1978         my %mimemap;
1979         open(MIME, $mimemap) or return undef;
1980         while (<MIME>) {
1981                 next if m/^#/; # skip comments
1982                 my ($mime, $exts) = split(/\t+/);
1983                 if (defined $exts) {
1984                         my @exts = split(/\s+/, $exts);
1985                         foreach my $ext (@exts) {
1986                                 $mimemap{$ext} = $mime;
1987                         }
1988                 }
1989         }
1990         close(MIME);
1991
1992         $filename =~ /\.([^.]*)$/;
1993         return $mimemap{$1};
1994 }
1995
1996 sub mimetype_guess {
1997         my $filename = shift;
1998         my $mime;
1999         $filename =~ /\./ or return undef;
2000
2001         if ($mimetypes_file) {
2002                 my $file = $mimetypes_file;
2003                 if ($file !~ m!^/!) { # if it is relative path
2004                         # it is relative to project
2005                         $file = "$projectroot/$project/$file";
2006                 }
2007                 $mime = mimetype_guess_file($filename, $file);
2008         }
2009         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2010         return $mime;
2011 }
2012
2013 sub blob_mimetype {
2014         my $fd = shift;
2015         my $filename = shift;
2016
2017         if ($filename) {
2018                 my $mime = mimetype_guess($filename);
2019                 $mime and return $mime;
2020         }
2021
2022         # just in case
2023         return $default_blob_plain_mimetype unless $fd;
2024
2025         if (-T $fd) {
2026                 return 'text/plain' .
2027                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2028         } elsif (! $filename) {
2029                 return 'application/octet-stream';
2030         } elsif ($filename =~ m/\.png$/i) {
2031                 return 'image/png';
2032         } elsif ($filename =~ m/\.gif$/i) {
2033                 return 'image/gif';
2034         } elsif ($filename =~ m/\.jpe?g$/i) {
2035                 return 'image/jpeg';
2036         } else {
2037                 return 'application/octet-stream';
2038         }
2039 }
2040
2041 ## ======================================================================
2042 ## functions printing HTML: header, footer, error page
2043
2044 sub git_header_html {
2045         my $status = shift || "200 OK";
2046         my $expires = shift;
2047
2048         my $title = "$site_name";
2049         if (defined $project) {
2050                 $title .= " - " . to_utf8($project);
2051                 if (defined $action) {
2052                         $title .= "/$action";
2053                         if (defined $file_name) {
2054                                 $title .= " - " . esc_path($file_name);
2055                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2056                                         $title .= "/";
2057                                 }
2058                         }
2059                 }
2060         }
2061         my $content_type;
2062         # require explicit support from the UA if we are to send the page as
2063         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2064         # we have to do this because MSIE sometimes globs '*/*', pretending to
2065         # support xhtml+xml but choking when it gets what it asked for.
2066         if (defined $cgi->http('HTTP_ACCEPT') &&
2067             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2068             $cgi->Accept('application/xhtml+xml') != 0) {
2069                 $content_type = 'application/xhtml+xml';
2070         } else {
2071                 $content_type = 'text/html';
2072         }
2073         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2074                            -status=> $status, -expires => $expires);
2075         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2076         print <<EOF;
2077 <?xml version="1.0" encoding="utf-8"?>
2078 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2079 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2080 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2081 <!-- git core binaries version $git_version -->
2082 <head>
2083 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2084 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2085 <meta name="robots" content="index, nofollow"/>
2086 <title>$title</title>
2087 EOF
2088 # print out each stylesheet that exist
2089         if (defined $stylesheet) {
2090 #provides backwards capability for those people who define style sheet in a config file
2091                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2092         } else {
2093                 foreach my $stylesheet (@stylesheets) {
2094                         next unless $stylesheet;
2095                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2096                 }
2097         }
2098         if (defined $project) {
2099                 printf('<link rel="alternate" title="%s log RSS feed" '.
2100                        'href="%s" type="application/rss+xml" />'."\n",
2101                        esc_param($project), href(action=>"rss"));
2102                 printf('<link rel="alternate" title="%s log Atom feed" '.
2103                        'href="%s" type="application/atom+xml" />'."\n",
2104                        esc_param($project), href(action=>"atom"));
2105         } else {
2106                 printf('<link rel="alternate" title="%s projects list" '.
2107                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2108                        $site_name, href(project=>undef, action=>"project_index"));
2109                 printf('<link rel="alternate" title="%s projects feeds" '.
2110                        'href="%s" type="text/x-opml"/>'."\n",
2111                        $site_name, href(project=>undef, action=>"opml"));
2112         }
2113         if (defined $favicon) {
2114                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2115         }
2116
2117         print "</head>\n" .
2118               "<body>\n";
2119
2120         if (-f $site_header) {
2121                 open (my $fd, $site_header);
2122                 print <$fd>;
2123                 close $fd;
2124         }
2125
2126         print "<div class=\"page_header\">\n" .
2127               $cgi->a({-href => esc_url($logo_url),
2128                        -title => $logo_label},
2129                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2130         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2131         if (defined $project) {
2132                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2133                 if (defined $action) {
2134                         print " / $action";
2135                 }
2136                 print "\n";
2137         }
2138         print "</div>\n";
2139
2140         my ($have_search) = gitweb_check_feature('search');
2141         if ((defined $project) && ($have_search)) {
2142                 if (!defined $searchtext) {
2143                         $searchtext = "";
2144                 }
2145                 my $search_hash;
2146                 if (defined $hash_base) {
2147                         $search_hash = $hash_base;
2148                 } elsif (defined $hash) {
2149                         $search_hash = $hash;
2150                 } else {
2151                         $search_hash = "HEAD";
2152                 }
2153                 $cgi->param("a", "search");
2154                 $cgi->param("h", $search_hash);
2155                 $cgi->param("p", $project);
2156                 print $cgi->startform(-method => "get", -action => $my_uri) .
2157                       "<div class=\"search\">\n" .
2158                       $cgi->hidden(-name => "p") . "\n" .
2159                       $cgi->hidden(-name => "a") . "\n" .
2160                       $cgi->hidden(-name => "h") . "\n" .
2161                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2162                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2163                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2164                       " search:\n",
2165                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2166                       "</div>" .
2167                       $cgi->end_form() . "\n";
2168         }
2169 }
2170
2171 sub git_footer_html {
2172         print "<div class=\"page_footer\">\n";
2173         if (defined $project) {
2174                 my $descr = git_get_project_description($project);
2175                 if (defined $descr) {
2176                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2177                 }
2178                 print $cgi->a({-href => href(action=>"rss"),
2179                               -class => "rss_logo"}, "RSS") . " ";
2180                 print $cgi->a({-href => href(action=>"atom"),
2181                               -class => "rss_logo"}, "Atom") . "\n";
2182         } else {
2183                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2184                               -class => "rss_logo"}, "OPML") . " ";
2185                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2186                               -class => "rss_logo"}, "TXT") . "\n";
2187         }
2188         print "</div>\n" ;
2189
2190         if (-f $site_footer) {
2191                 open (my $fd, $site_footer);
2192                 print <$fd>;
2193                 close $fd;
2194         }
2195
2196         print "</body>\n" .
2197               "</html>";
2198 }
2199
2200 sub die_error {
2201         my $status = shift || "403 Forbidden";
2202         my $error = shift || "Malformed query, file missing or permission denied";
2203
2204         git_header_html($status);
2205         print <<EOF;
2206 <div class="page_body">
2207 <br /><br />
2208 $status - $error
2209 <br />
2210 </div>
2211 EOF
2212         git_footer_html();
2213         exit;
2214 }
2215
2216 ## ----------------------------------------------------------------------
2217 ## functions printing or outputting HTML: navigation
2218
2219 sub git_print_page_nav {
2220         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2221         $extra = '' if !defined $extra; # pager or formats
2222
2223         my @navs = qw(summary shortlog log commit commitdiff tree);
2224         if ($suppress) {
2225                 @navs = grep { $_ ne $suppress } @navs;
2226         }
2227
2228         my %arg = map { $_ => {action=>$_} } @navs;
2229         if (defined $head) {
2230                 for (qw(commit commitdiff)) {
2231                         $arg{$_}{'hash'} = $head;
2232                 }
2233                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2234                         for (qw(shortlog log)) {
2235                                 $arg{$_}{'hash'} = $head;
2236                         }
2237                 }
2238         }
2239         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2240         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2241
2242         print "<div class=\"page_nav\">\n" .
2243                 (join " | ",
2244                  map { $_ eq $current ?
2245                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2246                  } @navs);
2247         print "<br/>\n$extra<br/>\n" .
2248               "</div>\n";
2249 }
2250
2251 sub format_paging_nav {
2252         my ($action, $hash, $head, $page, $nrevs) = @_;
2253         my $paging_nav;
2254
2255
2256         if ($hash ne $head || $page) {
2257                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2258         } else {
2259                 $paging_nav .= "HEAD";
2260         }
2261
2262         if ($page > 0) {
2263                 $paging_nav .= " &sdot; " .
2264                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2265                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2266         } else {
2267                 $paging_nav .= " &sdot; prev";
2268         }
2269
2270         if ($nrevs >= (100 * ($page+1)-1)) {
2271                 $paging_nav .= " &sdot; " .
2272                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2273                                  -accesskey => "n", -title => "Alt-n"}, "next");
2274         } else {
2275                 $paging_nav .= " &sdot; next";
2276         }
2277
2278         return $paging_nav;
2279 }
2280
2281 ## ......................................................................
2282 ## functions printing or outputting HTML: div
2283
2284 sub git_print_header_div {
2285         my ($action, $title, $hash, $hash_base) = @_;
2286         my %args = ();
2287
2288         $args{'action'} = $action;
2289         $args{'hash'} = $hash if $hash;
2290         $args{'hash_base'} = $hash_base if $hash_base;
2291
2292         print "<div class=\"header\">\n" .
2293               $cgi->a({-href => href(%args), -class => "title"},
2294               $title ? $title : $action) .
2295               "\n</div>\n";
2296 }
2297
2298 #sub git_print_authorship (\%) {
2299 sub git_print_authorship {
2300         my $co = shift;
2301
2302         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2303         print "<div class=\"author_date\">" .
2304               esc_html($co->{'author_name'}) .
2305               " [$ad{'rfc2822'}";
2306         if ($ad{'hour_local'} < 6) {
2307                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2308                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2309         } else {
2310                 printf(" (%02d:%02d %s)",
2311                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2312         }
2313         print "]</div>\n";
2314 }
2315
2316 sub git_print_page_path {
2317         my $name = shift;
2318         my $type = shift;
2319         my $hb = shift;
2320
2321
2322         print "<div class=\"page_path\">";
2323         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2324                       -title => 'tree root'}, to_utf8("[$project]"));
2325         print " / ";
2326         if (defined $name) {
2327                 my @dirname = split '/', $name;
2328                 my $basename = pop @dirname;
2329                 my $fullname = '';
2330
2331                 foreach my $dir (@dirname) {
2332                         $fullname .= ($fullname ? '/' : '') . $dir;
2333                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2334                                                      hash_base=>$hb),
2335                                       -title => $fullname}, esc_path($dir));
2336                         print " / ";
2337                 }
2338                 if (defined $type && $type eq 'blob') {
2339                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2340                                                      hash_base=>$hb),
2341                                       -title => $name}, esc_path($basename));
2342                 } elsif (defined $type && $type eq 'tree') {
2343                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2344                                                      hash_base=>$hb),
2345                                       -title => $name}, esc_path($basename));
2346                         print " / ";
2347                 } else {
2348                         print esc_path($basename);
2349                 }
2350         }
2351         print "<br/></div>\n";
2352 }
2353
2354 # sub git_print_log (\@;%) {
2355 sub git_print_log ($;%) {
2356         my $log = shift;
2357         my %opts = @_;
2358
2359         if ($opts{'-remove_title'}) {
2360                 # remove title, i.e. first line of log
2361                 shift @$log;
2362         }
2363         # remove leading empty lines
2364         while (defined $log->[0] && $log->[0] eq "") {
2365                 shift @$log;
2366         }
2367
2368         # print log
2369         my $signoff = 0;
2370         my $empty = 0;
2371         foreach my $line (@$log) {
2372                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2373                         $signoff = 1;
2374                         $empty = 0;
2375                         if (! $opts{'-remove_signoff'}) {
2376                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2377                                 next;
2378                         } else {
2379                                 # remove signoff lines
2380                                 next;
2381                         }
2382                 } else {
2383                         $signoff = 0;
2384                 }
2385
2386                 # print only one empty line
2387                 # do not print empty line after signoff
2388                 if ($line eq "") {
2389                         next if ($empty || $signoff);
2390                         $empty = 1;
2391                 } else {
2392                         $empty = 0;
2393                 }
2394
2395                 print format_log_line_html($line) . "<br/>\n";
2396         }
2397
2398         if ($opts{'-final_empty_line'}) {
2399                 # end with single empty line
2400                 print "<br/>\n" unless $empty;
2401         }
2402 }
2403
2404 # return link target (what link points to)
2405 sub git_get_link_target {
2406         my $hash = shift;
2407         my $link_target;
2408
2409         # read link
2410         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2411                 or return;
2412         {
2413                 local $/;
2414                 $link_target = <$fd>;
2415         }
2416         close $fd
2417                 or return;
2418
2419         return $link_target;
2420 }
2421
2422 # given link target, and the directory (basedir) the link is in,
2423 # return target of link relative to top directory (top tree);
2424 # return undef if it is not possible (including absolute links).
2425 sub normalize_link_target {
2426         my ($link_target, $basedir, $hash_base) = @_;
2427
2428         # we can normalize symlink target only if $hash_base is provided
2429         return unless $hash_base;
2430
2431         # absolute symlinks (beginning with '/') cannot be normalized
2432         return if (substr($link_target, 0, 1) eq '/');
2433
2434         # normalize link target to path from top (root) tree (dir)
2435         my $path;
2436         if ($basedir) {
2437                 $path = $basedir . '/' . $link_target;
2438         } else {
2439                 # we are in top (root) tree (dir)
2440                 $path = $link_target;
2441         }
2442
2443         # remove //, /./, and /../
2444         my @path_parts;
2445         foreach my $part (split('/', $path)) {
2446                 # discard '.' and ''
2447                 next if (!$part || $part eq '.');
2448                 # handle '..'
2449                 if ($part eq '..') {
2450                         if (@path_parts) {
2451                                 pop @path_parts;
2452                         } else {
2453                                 # link leads outside repository (outside top dir)
2454                                 return;
2455                         }
2456                 } else {
2457                         push @path_parts, $part;
2458                 }
2459         }
2460         $path = join('/', @path_parts);
2461
2462         return $path;
2463 }
2464
2465 # print tree entry (row of git_tree), but without encompassing <tr> element
2466 sub git_print_tree_entry {
2467         my ($t, $basedir, $hash_base, $have_blame) = @_;
2468
2469         my %base_key = ();
2470         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2471
2472         # The format of a table row is: mode list link.  Where mode is
2473         # the mode of the entry, list is the name of the entry, an href,
2474         # and link is the action links of the entry.
2475
2476         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2477         if ($t->{'type'} eq "blob") {
2478                 print "<td class=\"list\">" .
2479                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2480                                                file_name=>"$basedir$t->{'name'}", %base_key),
2481                                 -class => "list"}, esc_path($t->{'name'}));
2482                 if (S_ISLNK(oct $t->{'mode'})) {
2483                         my $link_target = git_get_link_target($t->{'hash'});
2484                         if ($link_target) {
2485                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2486                                 if (defined $norm_target) {
2487                                         print " -> " .
2488                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2489                                                                      file_name=>$norm_target),
2490                                                        -title => $norm_target}, esc_path($link_target));
2491                                 } else {
2492                                         print " -> " . esc_path($link_target);
2493                                 }
2494                         }
2495                 }
2496                 print "</td>\n";
2497                 print "<td class=\"link\">";
2498                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2499                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2500                               "blob");
2501                 if ($have_blame) {
2502                         print " | " .
2503                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2504                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2505                                       "blame");
2506                 }
2507                 if (defined $hash_base) {
2508                         print " | " .
2509                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2510                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2511                                       "history");
2512                 }
2513                 print " | " .
2514                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2515                                                file_name=>"$basedir$t->{'name'}")},
2516                                 "raw");
2517                 print "</td>\n";
2518
2519         } elsif ($t->{'type'} eq "tree") {
2520                 print "<td class=\"list\">";
2521                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2522                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2523                               esc_path($t->{'name'}));
2524                 print "</td>\n";
2525                 print "<td class=\"link\">";
2526                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2527                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2528                               "tree");
2529                 if (defined $hash_base) {
2530                         print " | " .
2531                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2532                                                      file_name=>"$basedir$t->{'name'}")},
2533                                       "history");
2534                 }
2535                 print "</td>\n";
2536         }
2537 }
2538
2539 ## ......................................................................
2540 ## functions printing large fragments of HTML
2541
2542 sub fill_from_file_info {
2543         my ($diff, @parents) = @_;
2544
2545         $diff->{'from_file'} = [ ];
2546         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2547         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2548                 if ($diff->{'status'}[$i] eq 'R' ||
2549                     $diff->{'status'}[$i] eq 'C') {
2550                         $diff->{'from_file'}[$i] =
2551                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2552                 }
2553         }
2554
2555         return $diff;
2556 }
2557
2558 # parameters can be strings, or references to arrays of strings
2559 sub from_ids_eq {
2560         my ($a, $b) = @_;
2561
2562         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2563                 for (my $i = 0; $i < @$a; ++$i) {
2564                         return 0 unless ($a->[$i] eq $b->[$i]);
2565                 }
2566                 return 1;
2567         } elsif (!ref($a) && !ref($b)) {
2568                 return $a eq $b;
2569         } else {
2570                 return 0;
2571         }
2572 }
2573
2574 sub is_deleted {
2575         my $diffinfo = shift;
2576
2577         return $diffinfo->{'to_id'} eq ('0' x 40);
2578 }
2579
2580 sub git_difftree_body {
2581         my ($difftree, $hash, @parents) = @_;
2582         my ($parent) = $parents[0];
2583         my ($have_blame) = gitweb_check_feature('blame');
2584         print "<div class=\"list_head\">\n";
2585         if ($#{$difftree} > 10) {
2586                 print(($#{$difftree} + 1) . " files changed:\n");
2587         }
2588         print "</div>\n";
2589
2590         print "<table class=\"" .
2591               (@parents > 1 ? "combined " : "") .
2592               "diff_tree\">\n";
2593
2594         # header only for combined diff in 'commitdiff' view
2595         my $has_header = @parents > 1 && $action eq 'commitdiff';
2596         if ($has_header) {
2597                 # table header
2598                 print "<thead><tr>\n" .
2599                        "<th></th><th></th>\n"; # filename, patchN link
2600                 for (my $i = 0; $i < @parents; $i++) {
2601                         my $par = $parents[$i];
2602                         print "<th>" .
2603                               $cgi->a({-href => href(action=>"commitdiff",
2604                                                      hash=>$hash, hash_parent=>$par),
2605                                        -title => 'commitdiff to parent number ' .
2606                                                   ($i+1) . ': ' . substr($par,0,7)},
2607                                       $i+1) .
2608                               "&nbsp;</th>\n";
2609                 }
2610                 print "</tr></thead>\n<tbody>\n";
2611         }
2612
2613         my $alternate = 1;
2614         my $patchno = 0;
2615         foreach my $line (@{$difftree}) {
2616                 my $diff;
2617                 if (ref($line) eq "HASH") {
2618                         # pre-parsed (or generated by hand)
2619                         $diff = $line;
2620                 } else {
2621                         $diff = parse_difftree_raw_line($line);
2622                 }
2623
2624                 if ($alternate) {
2625                         print "<tr class=\"dark\">\n";
2626                 } else {
2627                         print "<tr class=\"light\">\n";
2628                 }
2629                 $alternate ^= 1;
2630
2631                 if (exists $diff->{'nparents'}) { # combined diff
2632
2633                         fill_from_file_info($diff, @parents)
2634                                 unless exists $diff->{'from_file'};
2635
2636                         if (!is_deleted($diff)) {
2637                                 # file exists in the result (child) commit
2638                                 print "<td>" .
2639                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2640                                                              file_name=>$diff->{'to_file'},
2641                                                              hash_base=>$hash),
2642                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2643                                       "</td>\n";
2644                         } else {
2645                                 print "<td>" .
2646                                       esc_path($diff->{'to_file'}) .
2647                                       "</td>\n";
2648                         }
2649
2650                         if ($action eq 'commitdiff') {
2651                                 # link to patch
2652                                 $patchno++;
2653                                 print "<td class=\"link\">" .
2654                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2655                                       " | " .
2656                                       "</td>\n";
2657                         }
2658
2659                         my $has_history = 0;
2660                         my $not_deleted = 0;
2661                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2662                                 my $hash_parent = $parents[$i];
2663                                 my $from_hash = $diff->{'from_id'}[$i];
2664                                 my $from_path = $diff->{'from_file'}[$i];
2665                                 my $status = $diff->{'status'}[$i];
2666
2667                                 $has_history ||= ($status ne 'A');
2668                                 $not_deleted ||= ($status ne 'D');
2669
2670                                 if ($status eq 'A') {
2671                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2672                                 } elsif ($status eq 'D') {
2673                                         print "<td class=\"link\">" .
2674                                               $cgi->a({-href => href(action=>"blob",
2675                                                                      hash_base=>$hash,
2676                                                                      hash=>$from_hash,
2677                                                                      file_name=>$from_path)},
2678                                                       "blob" . ($i+1)) .
2679                                               " | </td>\n";
2680                                 } else {
2681                                         if ($diff->{'to_id'} eq $from_hash) {
2682                                                 print "<td class=\"link nochange\">";
2683                                         } else {
2684                                                 print "<td class=\"link\">";
2685                                         }
2686                                         print $cgi->a({-href => href(action=>"blobdiff",
2687                                                                      hash=>$diff->{'to_id'},
2688                                                                      hash_parent=>$from_hash,
2689                                                                      hash_base=>$hash,
2690                                                                      hash_parent_base=>$hash_parent,
2691                                                                      file_name=>$diff->{'to_file'},
2692                                                                      file_parent=>$from_path)},
2693                                                       "diff" . ($i+1)) .
2694                                               " | </td>\n";
2695                                 }
2696                         }
2697
2698                         print "<td class=\"link\">";
2699                         if ($not_deleted) {
2700                                 print $cgi->a({-href => href(action=>"blob",
2701                                                              hash=>$diff->{'to_id'},
2702                                                              file_name=>$diff->{'to_file'},
2703                                                              hash_base=>$hash)},
2704                                               "blob");
2705                                 print " | " if ($has_history);
2706                         }
2707                         if ($has_history) {
2708                                 print $cgi->a({-href => href(action=>"history",
2709                                                              file_name=>$diff->{'to_file'},
2710                                                              hash_base=>$hash)},
2711                                               "history");
2712                         }
2713                         print "</td>\n";
2714
2715                         print "</tr>\n";
2716                         next; # instead of 'else' clause, to avoid extra indent
2717                 }
2718                 # else ordinary diff
2719
2720                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2721                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2722                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2723                         $to_mode_oct = oct $diff->{'to_mode'};
2724                         if (S_ISREG($to_mode_oct)) { # only for regular file
2725                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2726                         }
2727                         $to_file_type = file_type($diff->{'to_mode'});
2728                 }
2729                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2730                         $from_mode_oct = oct $diff->{'from_mode'};
2731                         if (S_ISREG($to_mode_oct)) { # only for regular file
2732                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2733                         }
2734                         $from_file_type = file_type($diff->{'from_mode'});
2735                 }
2736
2737                 if ($diff->{'status'} eq "A") { # created
2738                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2739                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2740                         $mode_chng   .= "]</span>";
2741                         print "<td>";
2742                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2743                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2744                                       -class => "list"}, esc_path($diff->{'file'}));
2745                         print "</td>\n";
2746                         print "<td>$mode_chng</td>\n";
2747                         print "<td class=\"link\">";
2748                         if ($action eq 'commitdiff') {
2749                                 # link to patch
2750                                 $patchno++;
2751                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2752                                 print " | ";
2753                         }
2754                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2755                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2756                                       "blob");
2757                         print "</td>\n";
2758
2759                 } elsif ($diff->{'status'} eq "D") { # deleted
2760                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2761                         print "<td>";
2762                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2763                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2764                                        -class => "list"}, esc_path($diff->{'file'}));
2765                         print "</td>\n";
2766                         print "<td>$mode_chng</td>\n";
2767                         print "<td class=\"link\">";
2768                         if ($action eq 'commitdiff') {
2769                                 # link to patch
2770                                 $patchno++;
2771                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2772                                 print " | ";
2773                         }
2774                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2775                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2776                                       "blob") . " | ";
2777                         if ($have_blame) {
2778                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2779                                                              file_name=>$diff->{'file'})},
2780                                               "blame") . " | ";
2781                         }
2782                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2783                                                      file_name=>$diff->{'file'})},
2784                                       "history");
2785                         print "</td>\n";
2786
2787                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2788                         my $mode_chnge = "";
2789                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2790                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2791                                 if ($from_file_type ne $to_file_type) {
2792                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2793                                 }
2794                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2795                                         if ($from_mode_str && $to_mode_str) {
2796                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2797                                         } elsif ($to_mode_str) {
2798                                                 $mode_chnge .= " mode: $to_mode_str";
2799                                         }
2800                                 }
2801                                 $mode_chnge .= "]</span>\n";
2802                         }
2803                         print "<td>";
2804                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2805                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2806                                       -class => "list"}, esc_path($diff->{'file'}));
2807                         print "</td>\n";
2808                         print "<td>$mode_chnge</td>\n";
2809                         print "<td class=\"link\">";
2810                         if ($action eq 'commitdiff') {
2811                                 # link to patch
2812                                 $patchno++;
2813                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2814                                       " | ";
2815                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2816                                 # "commit" view and modified file (not onlu mode changed)
2817                                 print $cgi->a({-href => href(action=>"blobdiff",
2818                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2819                                                              hash_base=>$hash, hash_parent_base=>$parent,
2820                                                              file_name=>$diff->{'file'})},
2821                                               "diff") .
2822                                       " | ";
2823                         }
2824                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2825                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2826                                        "blob") . " | ";
2827                         if ($have_blame) {
2828                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2829                                                              file_name=>$diff->{'file'})},
2830                                               "blame") . " | ";
2831                         }
2832                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2833                                                      file_name=>$diff->{'file'})},
2834                                       "history");
2835                         print "</td>\n";
2836
2837                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2838                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2839                         my $nstatus = $status_name{$diff->{'status'}};
2840                         my $mode_chng = "";
2841                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2842                                 # mode also for directories, so we cannot use $to_mode_str
2843                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2844                         }
2845                         print "<td>" .
2846                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2847                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2848                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2849                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2850                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2851                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2852                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2853                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2854                               "<td class=\"link\">";
2855                         if ($action eq 'commitdiff') {
2856                                 # link to patch
2857                                 $patchno++;
2858                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2859                                       " | ";
2860                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2861                                 # "commit" view and modified file (not only pure rename or copy)
2862                                 print $cgi->a({-href => href(action=>"blobdiff",
2863                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2864                                                              hash_base=>$hash, hash_parent_base=>$parent,
2865                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2866                                               "diff") .
2867                                       " | ";
2868                         }
2869                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2870                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2871                                       "blob") . " | ";
2872                         if ($have_blame) {
2873                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2874                                                              file_name=>$diff->{'to_file'})},
2875                                               "blame") . " | ";
2876                         }
2877                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2878                                                     file_name=>$diff->{'to_file'})},
2879                                       "history");
2880                         print "</td>\n";
2881
2882                 } # we should not encounter Unmerged (U) or Unknown (X) status
2883                 print "</tr>\n";
2884         }
2885         print "</tbody>" if $has_header;
2886         print "</table>\n";
2887 }
2888
2889 sub git_patchset_body {
2890         my ($fd, $difftree, $hash, @hash_parents) = @_;
2891         my ($hash_parent) = $hash_parents[0];
2892
2893         my $patch_idx = 0;
2894         my $patch_number = 0;
2895         my $patch_line;
2896         my $diffinfo;
2897         my (%from, %to);
2898
2899         print "<div class=\"patchset\">\n";
2900
2901         # skip to first patch
2902         while ($patch_line = <$fd>) {
2903                 chomp $patch_line;
2904
2905                 last if ($patch_line =~ m/^diff /);
2906         }
2907
2908  PATCH:
2909         while ($patch_line) {
2910                 my @diff_header;
2911                 my ($from_id, $to_id);
2912
2913                 # git diff header
2914                 #assert($patch_line =~ m/^diff /) if DEBUG;
2915                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2916                 $patch_number++;
2917                 push @diff_header, $patch_line;
2918
2919                 # extended diff header
2920         EXTENDED_HEADER:
2921                 while ($patch_line = <$fd>) {
2922                         chomp $patch_line;
2923
2924                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2925
2926                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2927                                 $from_id = $1;
2928                                 $to_id   = $2;
2929                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2930                                 $from_id = [ split(',', $1) ];
2931                                 $to_id   = $2;
2932                         }
2933
2934                         push @diff_header, $patch_line;
2935                 }
2936                 my $last_patch_line = $patch_line;
2937
2938                 # check if current patch belong to current raw line
2939                 # and parse raw git-diff line if needed
2940                 if (defined $diffinfo &&
2941                     defined $from_id && defined $to_id &&
2942                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
2943                     $diffinfo->{'to_id'} eq $to_id) {
2944                         # this is continuation of a split patch
2945                         print "<div class=\"patch cont\">\n";
2946                 } else {
2947                         # advance raw git-diff output if needed
2948                         $patch_idx++ if defined $diffinfo;
2949
2950                         # read and prepare patch information
2951                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2952                                 # pre-parsed (or generated by hand)
2953                                 $diffinfo = $difftree->[$patch_idx];
2954                         } else {
2955                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2956                         }
2957                         # modifies %from, %to hashes
2958                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
2959                         if ($diffinfo->{'nparents'}) {
2960                                 # combined diff
2961                                 $from{'file'} = [];
2962                                 $from{'href'} = [];
2963                                 fill_from_file_info($diffinfo, @hash_parents)
2964                                         unless exists $diffinfo->{'from_file'};
2965                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2966                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2967                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2968                                                 $from{'href'}[$i] = href(action=>"blob",
2969                                                                          hash_base=>$hash_parents[$i],
2970                                                                          hash=>$diffinfo->{'from_id'}[$i],
2971                                                                          file_name=>$from{'file'}[$i]);
2972                                         } else {
2973                                                 $from{'href'}[$i] = undef;
2974                                         }
2975                                 }
2976                         } else {
2977                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2978                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2979                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2980                                                              hash=>$diffinfo->{'from_id'},
2981                                                              file_name=>$from{'file'});
2982                                 } else {
2983                                         delete $from{'href'};
2984                                 }
2985                         }
2986
2987                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2988                         if (!is_deleted($diffinfo)) { # file exists in result
2989                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2990                                                    hash=>$diffinfo->{'to_id'},
2991                                                    file_name=>$to{'file'});
2992                         } else {
2993                                 delete $to{'href'};
2994                         }
2995                         # this is first patch for raw difftree line with $patch_idx index
2996                         # we index @$difftree array from 0, but number patches from 1
2997                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2998                 }
2999
3000                 # print "git diff" header
3001                 $patch_line = shift @diff_header;
3002                 print format_git_diff_header_line($patch_line, $diffinfo,
3003                                                   \%from, \%to);
3004
3005                 # print extended diff header
3006                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3007         EXTENDED_HEADER:
3008                 foreach $patch_line (@diff_header) {
3009                         print format_extended_diff_header_line($patch_line, $diffinfo,
3010                                                                \%from, \%to);
3011                 }
3012                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3013
3014                 # from-file/to-file diff header
3015                 $patch_line = $last_patch_line;
3016                 if (! $patch_line) {
3017                         print "</div>\n"; # class="patch"
3018                         last PATCH;
3019                 }
3020                 next PATCH if ($patch_line =~ m/^diff /);
3021                 #assert($patch_line =~ m/^---/) if DEBUG;
3022                 #assert($patch_line eq $last_patch_line) if DEBUG;
3023
3024                 $patch_line = <$fd>;
3025                 chomp $patch_line;
3026                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3027
3028                 print format_diff_from_to_header($last_patch_line, $patch_line,
3029                                                  $diffinfo, \%from, \%to);
3030
3031                 # the patch itself
3032         LINE:
3033                 while ($patch_line = <$fd>) {
3034                         chomp $patch_line;
3035
3036                         next PATCH if ($patch_line =~ m/^diff /);
3037
3038                         print format_diff_line($patch_line, \%from, \%to);
3039                 }
3040
3041         } continue {
3042                 print "</div>\n"; # class="patch"
3043         }
3044
3045         if ($patch_number == 0) {
3046                 if (@hash_parents > 1) {
3047                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3048                 } else {
3049                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3050                 }
3051         }
3052
3053         print "</div>\n"; # class="patchset"
3054 }
3055
3056 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3057
3058 sub git_project_list_body {
3059         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3060
3061         my ($check_forks) = gitweb_check_feature('forks');
3062
3063         my @projects;
3064         foreach my $pr (@$projlist) {
3065                 my (@aa) = git_get_last_activity($pr->{'path'});
3066                 unless (@aa) {
3067                         next;
3068                 }
3069                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3070                 if (!defined $pr->{'descr'}) {
3071                         my $descr = git_get_project_description($pr->{'path'}) || "";
3072                         $pr->{'descr_long'} = to_utf8($descr);
3073                         $pr->{'descr'} = chop_str($descr, 25, 5);
3074                 }
3075                 if (!defined $pr->{'owner'}) {
3076                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
3077                 }
3078                 if ($check_forks) {
3079                         my $pname = $pr->{'path'};
3080                         if (($pname =~ s/\.git$//) &&
3081                             ($pname !~ /\/$/) &&
3082                             (-d "$projectroot/$pname")) {
3083                                 $pr->{'forks'} = "-d $projectroot/$pname";
3084                         }
3085                         else {
3086                                 $pr->{'forks'} = 0;
3087                         }
3088                 }
3089                 push @projects, $pr;
3090         }
3091
3092         $order ||= $default_projects_order;
3093         $from = 0 unless defined $from;
3094         $to = $#projects if (!defined $to || $#projects < $to);
3095
3096         print "<table class=\"project_list\">\n";
3097         unless ($no_header) {
3098                 print "<tr>\n";
3099                 if ($check_forks) {
3100                         print "<th></th>\n";
3101                 }
3102                 if ($order eq "project") {
3103                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3104                         print "<th>Project</th>\n";
3105                 } else {
3106                         print "<th>" .
3107                               $cgi->a({-href => href(project=>undef, order=>'project'),
3108                                        -class => "header"}, "Project") .
3109                               "</th>\n";
3110                 }
3111                 if ($order eq "descr") {
3112                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3113                         print "<th>Description</th>\n";
3114                 } else {
3115                         print "<th>" .
3116                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3117                                        -class => "header"}, "Description") .
3118                               "</th>\n";
3119                 }
3120                 if ($order eq "owner") {
3121                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3122                         print "<th>Owner</th>\n";
3123                 } else {
3124                         print "<th>" .
3125                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3126                                        -class => "header"}, "Owner") .
3127                               "</th>\n";
3128                 }
3129                 if ($order eq "age") {
3130                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3131                         print "<th>Last Change</th>\n";
3132                 } else {
3133                         print "<th>" .
3134                               $cgi->a({-href => href(project=>undef, order=>'age'),
3135                                        -class => "header"}, "Last Change") .
3136                               "</th>\n";
3137                 }
3138                 print "<th></th>\n" .
3139                       "</tr>\n";
3140         }
3141         my $alternate = 1;
3142         for (my $i = $from; $i <= $to; $i++) {
3143                 my $pr = $projects[$i];
3144                 if ($alternate) {
3145                         print "<tr class=\"dark\">\n";
3146                 } else {
3147                         print "<tr class=\"light\">\n";
3148                 }
3149                 $alternate ^= 1;
3150                 if ($check_forks) {
3151                         print "<td>";
3152                         if ($pr->{'forks'}) {
3153                                 print "<!-- $pr->{'forks'} -->\n";
3154                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3155                         }
3156                         print "</td>\n";
3157                 }
3158                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3159                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3160                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3161                                         -class => "list", -title => $pr->{'descr_long'}},
3162                                         esc_html($pr->{'descr'})) . "</td>\n" .
3163                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3164                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3165                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3166                       "<td class=\"link\">" .
3167                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3168                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3169                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3170                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3171                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3172                       "</td>\n" .
3173                       "</tr>\n";
3174         }
3175         if (defined $extra) {
3176                 print "<tr>\n";
3177                 if ($check_forks) {
3178                         print "<td></td>\n";
3179                 }
3180                 print "<td colspan=\"5\">$extra</td>\n" .
3181                       "</tr>\n";
3182         }
3183         print "</table>\n";
3184 }
3185
3186 sub git_shortlog_body {
3187         # uses global variable $project
3188         my ($commitlist, $from, $to, $refs, $extra) = @_;
3189
3190         my $have_snapshot = gitweb_have_snapshot();
3191
3192         $from = 0 unless defined $from;
3193         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3194
3195         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3196         my $alternate = 1;
3197         for (my $i = $from; $i <= $to; $i++) {
3198                 my %co = %{$commitlist->[$i]};
3199                 my $commit = $co{'id'};
3200                 my $ref = format_ref_marker($refs, $commit);
3201                 if ($alternate) {
3202                         print "<tr class=\"dark\">\n";
3203                 } else {
3204                         print "<tr class=\"light\">\n";
3205                 }
3206                 $alternate ^= 1;
3207                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3208                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3209                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3210                       "<td>";
3211                 print format_subject_html($co{'title'}, $co{'title_short'},
3212                                           href(action=>"commit", hash=>$commit), $ref);
3213                 print "</td>\n" .
3214                       "<td class=\"link\">" .
3215                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3216                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3217                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3218                 if ($have_snapshot) {
3219                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3220                 }
3221                 print "</td>\n" .
3222                       "</tr>\n";
3223         }
3224         if (defined $extra) {
3225                 print "<tr>\n" .
3226                       "<td colspan=\"4\">$extra</td>\n" .
3227                       "</tr>\n";
3228         }
3229         print "</table>\n";
3230 }
3231
3232 sub git_history_body {
3233         # Warning: assumes constant type (blob or tree) during history
3234         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3235
3236         $from = 0 unless defined $from;
3237         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3238
3239         print "<table class=\"history\" cellspacing=\"0\">\n";
3240         my $alternate = 1;
3241         for (my $i = $from; $i <= $to; $i++) {
3242                 my %co = %{$commitlist->[$i]};
3243                 if (!%co) {
3244                         next;
3245                 }
3246                 my $commit = $co{'id'};
3247
3248                 my $ref = format_ref_marker($refs, $commit);
3249
3250                 if ($alternate) {
3251                         print "<tr class=\"dark\">\n";
3252                 } else {
3253                         print "<tr class=\"light\">\n";
3254                 }
3255                 $alternate ^= 1;
3256                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3257                       # shortlog uses      chop_str($co{'author_name'}, 10)
3258                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3259                       "<td>";
3260                 # originally git_history used chop_str($co{'title'}, 50)
3261                 print format_subject_html($co{'title'}, $co{'title_short'},
3262                                           href(action=>"commit", hash=>$commit), $ref);
3263                 print "</td>\n" .
3264                       "<td class=\"link\">" .
3265                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3266                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3267
3268                 if ($ftype eq 'blob') {
3269                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3270                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3271                         if (defined $blob_current && defined $blob_parent &&
3272                                         $blob_current ne $blob_parent) {
3273                                 print " | " .
3274                                         $cgi->a({-href => href(action=>"blobdiff",
3275                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3276                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3277                                                                file_name=>$file_name)},
3278                                                 "diff to current");
3279                         }
3280                 }
3281                 print "</td>\n" .
3282                       "</tr>\n";
3283         }
3284         if (defined $extra) {
3285                 print "<tr>\n" .
3286                       "<td colspan=\"4\">$extra</td>\n" .
3287                       "</tr>\n";
3288         }
3289         print "</table>\n";
3290 }
3291
3292 sub git_tags_body {
3293         # uses global variable $project
3294         my ($taglist, $from, $to, $extra) = @_;
3295         $from = 0 unless defined $from;
3296         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3297
3298         print "<table class=\"tags\" cellspacing=\"0\">\n";
3299         my $alternate = 1;
3300         for (my $i = $from; $i <= $to; $i++) {
3301                 my $entry = $taglist->[$i];
3302                 my %tag = %$entry;
3303                 my $comment = $tag{'subject'};
3304                 my $comment_short;
3305                 if (defined $comment) {
3306                         $comment_short = chop_str($comment, 30, 5);
3307                 }
3308                 if ($alternate) {
3309                         print "<tr class=\"dark\">\n";
3310                 } else {
3311                         print "<tr class=\"light\">\n";
3312                 }
3313                 $alternate ^= 1;
3314                 if (defined $tag{'age'}) {
3315                         print "<td><i>$tag{'age'}</i></td>\n";
3316                 } else {
3317                         print "<td></td>\n";
3318                 }
3319                 print "<td>" .
3320                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3321                                -class => "list name"}, esc_html($tag{'name'})) .
3322                       "</td>\n" .
3323                       "<td>";
3324                 if (defined $comment) {
3325                         print format_subject_html($comment, $comment_short,
3326                                                   href(action=>"tag", hash=>$tag{'id'}));
3327                 }
3328                 print "</td>\n" .
3329                       "<td class=\"selflink\">";
3330                 if ($tag{'type'} eq "tag") {
3331                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3332                 } else {
3333                         print "&nbsp;";
3334                 }
3335                 print "</td>\n" .
3336                       "<td class=\"link\">" . " | " .
3337                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3338                 if ($tag{'reftype'} eq "commit") {
3339                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3340                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3341                 } elsif ($tag{'reftype'} eq "blob") {
3342                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3343                 }
3344                 print "</td>\n" .
3345                       "</tr>";
3346         }
3347         if (defined $extra) {
3348                 print "<tr>\n" .
3349                       "<td colspan=\"5\">$extra</td>\n" .
3350                       "</tr>\n";
3351         }
3352         print "</table>\n";
3353 }
3354
3355 sub git_heads_body {
3356         # uses global variable $project
3357         my ($headlist, $head, $from, $to, $extra) = @_;
3358         $from = 0 unless defined $from;
3359         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3360
3361         print "<table class=\"heads\" cellspacing=\"0\">\n";
3362         my $alternate = 1;
3363         for (my $i = $from; $i <= $to; $i++) {
3364                 my $entry = $headlist->[$i];
3365                 my %ref = %$entry;
3366                 my $curr = $ref{'id'} eq $head;
3367                 if ($alternate) {
3368                         print "<tr class=\"dark\">\n";
3369                 } else {
3370                         print "<tr class=\"light\">\n";
3371                 }
3372                 $alternate ^= 1;
3373                 print "<td><i>$ref{'age'}</i></td>\n" .
3374                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3375                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3376                                -class => "list name"},esc_html($ref{'name'})) .
3377                       "</td>\n" .
3378                       "<td class=\"link\">" .
3379                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3380                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3381                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3382                       "</td>\n" .
3383                       "</tr>";
3384         }
3385         if (defined $extra) {
3386                 print "<tr>\n" .
3387                       "<td colspan=\"3\">$extra</td>\n" .
3388                       "</tr>\n";
3389         }
3390         print "</table>\n";
3391 }
3392
3393 sub git_search_grep_body {
3394         my ($commitlist, $from, $to, $extra) = @_;
3395         $from = 0 unless defined $from;
3396         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3397
3398         print "<table class=\"grep\" cellspacing=\"0\">\n";
3399         my $alternate = 1;
3400         for (my $i = $from; $i <= $to; $i++) {
3401                 my %co = %{$commitlist->[$i]};
3402                 if (!%co) {
3403                         next;
3404                 }
3405                 my $commit = $co{'id'};
3406                 if ($alternate) {
3407                         print "<tr class=\"dark\">\n";
3408                 } else {
3409                         print "<tr class=\"light\">\n";
3410                 }
3411                 $alternate ^= 1;
3412                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3413                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3414                       "<td>" .
3415                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3416                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3417                 my $comment = $co{'comment'};
3418                 foreach my $line (@$comment) {
3419                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3420                                 my $lead = esc_html($1) || "";
3421                                 $lead = chop_str($lead, 30, 10);
3422                                 my $match = esc_html($2) || "";
3423                                 my $trail = esc_html($3) || "";
3424                                 $trail = chop_str($trail, 30, 10);
3425                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3426                                 print chop_str($text, 80, 5) . "<br/>\n";
3427                         }
3428                 }
3429                 print "</td>\n" .
3430                       "<td class=\"link\">" .
3431                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3432                       " | " .
3433                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3434                 print "</td>\n" .
3435                       "</tr>\n";
3436         }
3437         if (defined $extra) {
3438                 print "<tr>\n" .
3439                       "<td colspan=\"3\">$extra</td>\n" .
3440                       "</tr>\n";
3441         }
3442         print "</table>\n";
3443 }
3444
3445 ## ======================================================================
3446 ## ======================================================================
3447 ## actions
3448
3449 sub git_project_list {
3450         my $order = $cgi->param('o');
3451         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3452                 die_error(undef, "Unknown order parameter");
3453         }
3454
3455         my @list = git_get_projects_list();
3456         if (!@list) {
3457                 die_error(undef, "No projects found");
3458         }
3459
3460         git_header_html();
3461         if (-f $home_text) {
3462                 print "<div class=\"index_include\">\n";
3463                 open (my $fd, $home_text);
3464                 print <$fd>;
3465                 close $fd;
3466                 print "</div>\n";
3467         }
3468         git_project_list_body(\@list, $order);
3469         git_footer_html();
3470 }
3471
3472 sub git_forks {
3473         my $order = $cgi->param('o');
3474         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3475                 die_error(undef, "Unknown order parameter");
3476         }
3477
3478         my @list = git_get_projects_list($project);
3479         if (!@list) {
3480                 die_error(undef, "No forks found");
3481         }
3482
3483         git_header_html();
3484         git_print_page_nav('','');
3485         git_print_header_div('summary', "$project forks");
3486         git_project_list_body(\@list, $order);
3487         git_footer_html();
3488 }
3489
3490 sub git_project_index {
3491         my @projects = git_get_projects_list($project);
3492
3493         print $cgi->header(
3494                 -type => 'text/plain',
3495                 -charset => 'utf-8',
3496                 -content_disposition => 'inline; filename="index.aux"');
3497
3498         foreach my $pr (@projects) {
3499                 if (!exists $pr->{'owner'}) {
3500                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3501                 }
3502
3503                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3504                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3505                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3506                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3507                 $path  =~ s/ /\+/g;
3508                 $owner =~ s/ /\+/g;
3509
3510                 print "$path $owner\n";
3511         }
3512 }
3513
3514 sub git_summary {
3515         my $descr = git_get_project_description($project) || "none";
3516         my %co = parse_commit("HEAD");
3517         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3518         my $head = $co{'id'};
3519
3520         my $owner = git_get_project_owner($project);
3521
3522         my $refs = git_get_references();
3523         # These get_*_list functions return one more to allow us to see if
3524         # there are more ...
3525         my @taglist  = git_get_tags_list(16);
3526         my @headlist = git_get_heads_list(16);
3527         my @forklist;
3528         my ($check_forks) = gitweb_check_feature('forks');
3529
3530         if ($check_forks) {
3531                 @forklist = git_get_projects_list($project);
3532         }
3533
3534         git_header_html();
3535         git_print_page_nav('summary','', $head);
3536
3537         print "<div class=\"title\">&nbsp;</div>\n";
3538         print "<table cellspacing=\"0\">\n" .
3539               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3540               "<tr><td>owner</td><td>$owner</td></tr>\n";
3541         if (defined $cd{'rfc2822'}) {
3542                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3543         }
3544
3545         # use per project git URL list in $projectroot/$project/cloneurl
3546         # or make project git URL from git base URL and project name
3547         my $url_tag = "URL";
3548         my @url_list = git_get_project_url_list($project);
3549         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3550         foreach my $git_url (@url_list) {
3551                 next unless $git_url;
3552                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3553                 $url_tag = "";
3554         }
3555         print "</table>\n";
3556
3557         if (-s "$projectroot/$project/README.html") {
3558                 if (open my $fd, "$projectroot/$project/README.html") {
3559                         print "<div class=\"title\">readme</div>\n";
3560                         print $_ while (<$fd>);
3561                         close $fd;
3562                 }
3563         }
3564
3565         # we need to request one more than 16 (0..15) to check if
3566         # those 16 are all
3567         my @commitlist = $head ? parse_commits($head, 17) : ();
3568         if (@commitlist) {
3569                 git_print_header_div('shortlog');
3570                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3571                                   $#commitlist <=  15 ? undef :
3572                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3573         }
3574
3575         if (@taglist) {
3576                 git_print_header_div('tags');
3577                 git_tags_body(\@taglist, 0, 15,
3578                               $#taglist <=  15 ? undef :
3579                               $cgi->a({-href => href(action=>"tags")}, "..."));
3580         }
3581
3582         if (@headlist) {
3583                 git_print_header_div('heads');
3584                 git_heads_body(\@headlist, $head, 0, 15,
3585                                $#headlist <= 15 ? undef :
3586                                $cgi->a({-href => href(action=>"heads")}, "..."));
3587         }
3588
3589         if (@forklist) {
3590                 git_print_header_div('forks');
3591                 git_project_list_body(\@forklist, undef, 0, 15,
3592                                       $#forklist <= 15 ? undef :
3593                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3594                                       'noheader');
3595         }
3596
3597         git_footer_html();
3598 }
3599
3600 sub git_tag {
3601         my $head = git_get_head_hash($project);
3602         git_header_html();
3603         git_print_page_nav('','', $head,undef,$head);
3604         my %tag = parse_tag($hash);
3605
3606         if (! %tag) {
3607                 die_error(undef, "Unknown tag object");
3608         }
3609
3610         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3611         print "<div class=\"title_text\">\n" .
3612               "<table cellspacing=\"0\">\n" .
3613               "<tr>\n" .
3614               "<td>object</td>\n" .
3615               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3616                                $tag{'object'}) . "</td>\n" .
3617               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3618                                               $tag{'type'}) . "</td>\n" .
3619               "</tr>\n";
3620         if (defined($tag{'author'})) {
3621                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3622                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3623                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3624                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3625                         "</td></tr>\n";
3626         }
3627         print "</table>\n\n" .
3628               "</div>\n";
3629         print "<div class=\"page_body\">";
3630         my $comment = $tag{'comment'};
3631         foreach my $line (@$comment) {
3632                 chomp $line;
3633                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3634         }
3635         print "</div>\n";
3636         git_footer_html();
3637 }
3638
3639 sub git_blame2 {
3640         my $fd;
3641         my $ftype;
3642
3643         my ($have_blame) = gitweb_check_feature('blame');
3644         if (!$have_blame) {
3645                 die_error('403 Permission denied', "Permission denied");
3646         }
3647         die_error('404 Not Found', "File name not defined") if (!$file_name);
3648         $hash_base ||= git_get_head_hash($project);
3649         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3650         my %co = parse_commit($hash_base)
3651                 or die_error(undef, "Reading commit failed");
3652         if (!defined $hash) {
3653                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3654                         or die_error(undef, "Error looking up file");
3655         }
3656         $ftype = git_get_type($hash);
3657         if ($ftype !~ "blob") {
3658                 die_error('400 Bad Request', "Object is not a blob");
3659         }
3660         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3661               $file_name, $hash_base)
3662                 or die_error(undef, "Open git-blame failed");
3663         git_header_html();
3664         my $formats_nav =
3665                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3666                         "blob") .
3667                 " | " .
3668                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3669                         "history") .
3670                 " | " .
3671                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3672                         "HEAD");
3673         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3674         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3675         git_print_page_path($file_name, $ftype, $hash_base);
3676         my @rev_color = (qw(light2 dark2));
3677         my $num_colors = scalar(@rev_color);
3678         my $current_color = 0;
3679         my $last_rev;
3680         print <<HTML;
3681 <div class="page_body">
3682 <table class="blame">
3683 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3684 HTML
3685         my %metainfo = ();
3686         while (1) {
3687                 $_ = <$fd>;
3688                 last unless defined $_;
3689                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3690                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3691                 if (!exists $metainfo{$full_rev}) {
3692                         $metainfo{$full_rev} = {};
3693                 }
3694                 my $meta = $metainfo{$full_rev};
3695                 while (<$fd>) {
3696                         last if (s/^\t//);
3697                         if (/^(\S+) (.*)$/) {
3698                                 $meta->{$1} = $2;
3699                         }
3700                 }
3701                 my $data = $_;
3702                 chomp $data;
3703                 my $rev = substr($full_rev, 0, 8);
3704                 my $author = $meta->{'author'};
3705                 my %date = parse_date($meta->{'author-time'},
3706                                       $meta->{'author-tz'});
3707                 my $date = $date{'iso-tz'};
3708                 if ($group_size) {
3709                         $current_color = ++$current_color % $num_colors;
3710                 }
3711                 print "<tr class=\"$rev_color[$current_color]\">\n";
3712                 if ($group_size) {
3713                         print "<td class=\"sha1\"";
3714                         print " title=\"". esc_html($author) . ", $date\"";
3715                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3716                         print ">";
3717                         print $cgi->a({-href => href(action=>"commit",
3718                                                      hash=>$full_rev,
3719                                                      file_name=>$file_name)},
3720                                       esc_html($rev));
3721                         print "</td>\n";
3722                 }
3723                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3724                         or die_error(undef, "Open git-rev-parse failed");
3725                 my $parent_commit = <$dd>;
3726                 close $dd;
3727                 chomp($parent_commit);
3728                 my $blamed = href(action => 'blame',
3729                                   file_name => $meta->{'filename'},
3730                                   hash_base => $parent_commit);
3731                 print "<td class=\"linenr\">";
3732                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3733                                 -id => "l$lineno",
3734                                 -class => "linenr" },
3735                               esc_html($lineno));
3736                 print "</td>";
3737                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3738                 print "</tr>\n";
3739         }
3740         print "</table>\n";
3741         print "</div>";
3742         close $fd
3743                 or print "Reading blob failed\n";
3744         git_footer_html();
3745 }
3746
3747 sub git_blame {
3748         my $fd;
3749
3750         my ($have_blame) = gitweb_check_feature('blame');
3751         if (!$have_blame) {
3752                 die_error('403 Permission denied', "Permission denied");
3753         }
3754         die_error('404 Not Found', "File name not defined") if (!$file_name);
3755         $hash_base ||= git_get_head_hash($project);
3756         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3757         my %co = parse_commit($hash_base)
3758                 or die_error(undef, "Reading commit failed");
3759         if (!defined $hash) {
3760                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3761                         or die_error(undef, "Error lookup file");
3762         }
3763         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3764                 or die_error(undef, "Open git-annotate failed");
3765         git_header_html();
3766         my $formats_nav =
3767                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3768                         "blob") .
3769                 " | " .
3770                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3771                         "history") .
3772                 " | " .
3773                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3774                         "HEAD");
3775         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3776         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3777         git_print_page_path($file_name, 'blob', $hash_base);
3778         print "<div class=\"page_body\">\n";
3779         print <<HTML;
3780 <table class="blame">
3781   <tr>
3782     <th>Commit</th>
3783     <th>Age</th>
3784     <th>Author</th>
3785     <th>Line</th>
3786     <th>Data</th>
3787   </tr>
3788 HTML
3789         my @line_class = (qw(light dark));
3790         my $line_class_len = scalar (@line_class);
3791         my $line_class_num = $#line_class;
3792         while (my $line = <$fd>) {
3793                 my $long_rev;
3794                 my $short_rev;
3795                 my $author;
3796                 my $time;
3797                 my $lineno;
3798                 my $data;
3799                 my $age;
3800                 my $age_str;
3801                 my $age_class;
3802
3803                 chomp $line;
3804                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3805
3806                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3807                         $long_rev = $1;
3808                         $author   = $2;
3809                         $time     = $3;
3810                         $lineno   = $4;
3811                         $data     = $5;
3812                 } else {
3813                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3814                         next;
3815                 }
3816                 $short_rev  = substr ($long_rev, 0, 8);
3817                 $age        = time () - $time;
3818                 $age_str    = age_string ($age);
3819                 $age_str    =~ s/ /&nbsp;/g;
3820                 $age_class  = age_class($age);
3821                 $author     = esc_html ($author);
3822                 $author     =~ s/ /&nbsp;/g;
3823
3824                 $data = untabify($data);
3825                 $data = esc_html ($data);
3826
3827                 print <<HTML;
3828   <tr class="$line_class[$line_class_num]">
3829     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3830     <td class="$age_class">$age_str</td>
3831     <td>$author</td>
3832     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3833     <td class="pre">$data</td>
3834   </tr>
3835 HTML
3836         } # while (my $line = <$fd>)
3837         print "</table>\n\n";
3838         close $fd
3839                 or print "Reading blob failed.\n";
3840         print "</div>";
3841         git_footer_html();
3842 }
3843
3844 sub git_tags {
3845         my $head = git_get_head_hash($project);
3846         git_header_html();
3847         git_print_page_nav('','', $head,undef,$head);
3848         git_print_header_div('summary', $project);
3849
3850         my @tagslist = git_get_tags_list();
3851         if (@tagslist) {
3852                 git_tags_body(\@tagslist);
3853         }
3854         git_footer_html();
3855 }
3856
3857 sub git_heads {
3858         my $head = git_get_head_hash($project);
3859         git_header_html();
3860         git_print_page_nav('','', $head,undef,$head);
3861         git_print_header_div('summary', $project);
3862
3863         my @headslist = git_get_heads_list();
3864         if (@headslist) {
3865                 git_heads_body(\@headslist, $head);
3866         }
3867         git_footer_html();
3868 }
3869
3870 sub git_blob_plain {
3871         my $expires;
3872
3873         if (!defined $hash) {
3874                 if (defined $file_name) {
3875                         my $base = $hash_base || git_get_head_hash($project);
3876                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3877                                 or die_error(undef, "Error lookup file");
3878                 } else {
3879                         die_error(undef, "No file name defined");
3880                 }
3881         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3882                 # blobs defined by non-textual hash id's can be cached
3883                 $expires = "+1d";
3884         }
3885
3886         my $type = shift;
3887         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3888                 or die_error(undef, "Couldn't cat $file_name, $hash");
3889
3890         $type ||= blob_mimetype($fd, $file_name);
3891
3892         # save as filename, even when no $file_name is given
3893         my $save_as = "$hash";
3894         if (defined $file_name) {
3895                 $save_as = $file_name;
3896         } elsif ($type =~ m/^text\//) {
3897                 $save_as .= '.txt';
3898         }
3899
3900         print $cgi->header(
3901                 -type => "$type",
3902                 -expires=>$expires,
3903                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3904         undef $/;
3905         binmode STDOUT, ':raw';
3906         print <$fd>;
3907         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3908         $/ = "\n";
3909         close $fd;
3910 }
3911
3912 sub git_blob {
3913         my $expires;
3914
3915         if (!defined $hash) {
3916                 if (defined $file_name) {
3917                         my $base = $hash_base || git_get_head_hash($project);
3918                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3919                                 or die_error(undef, "Error lookup file");
3920                 } else {
3921                         die_error(undef, "No file name defined");
3922                 }
3923         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3924                 # blobs defined by non-textual hash id's can be cached
3925                 $expires = "+1d";
3926         }
3927
3928         my ($have_blame) = gitweb_check_feature('blame');
3929         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3930                 or die_error(undef, "Couldn't cat $file_name, $hash");
3931         my $mimetype = blob_mimetype($fd, $file_name);
3932         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3933                 close $fd;
3934                 return git_blob_plain($mimetype);
3935         }
3936         # we can have blame only for text/* mimetype
3937         $have_blame &&= ($mimetype =~ m!^text/!);
3938
3939         git_header_html(undef, $expires);
3940         my $formats_nav = '';
3941         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3942                 if (defined $file_name) {
3943                         if ($have_blame) {
3944                                 $formats_nav .=
3945                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3946                                                                hash=>$hash, file_name=>$file_name)},
3947                                                 "blame") .
3948                                         " | ";
3949                         }
3950                         $formats_nav .=
3951                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3952                                                        hash=>$hash, file_name=>$file_name)},
3953                                         "history") .
3954                                 " | " .
3955                                 $cgi->a({-href => href(action=>"blob_plain",
3956                                                        hash=>$hash, file_name=>$file_name)},
3957                                         "raw") .
3958                                 " | " .
3959                                 $cgi->a({-href => href(action=>"blob",
3960                                                        hash_base=>"HEAD", file_name=>$file_name)},
3961                                         "HEAD");
3962                 } else {
3963                         $formats_nav .=
3964                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3965                 }
3966                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3967                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3968         } else {
3969                 print "<div class=\"page_nav\">\n" .
3970                       "<br/><br/></div>\n" .
3971                       "<div class=\"title\">$hash</div>\n";
3972         }
3973         git_print_page_path($file_name, "blob", $hash_base);
3974         print "<div class=\"page_body\">\n";
3975         if ($mimetype =~ m!^text/!) {
3976                 my $nr;
3977                 while (my $line = <$fd>) {
3978                         chomp $line;
3979                         $nr++;
3980                         $line = untabify($line);
3981                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3982                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3983                 }
3984         } elsif ($mimetype =~ m!^image/!) {
3985                 print qq!<img type="$mimetype"!;
3986                 if ($file_name) {
3987                         print qq! alt="$file_name" title="$file_name"!;
3988                 }
3989                 print qq! src="! .
3990                       href(action=>"blob_plain", hash=>$hash,
3991                            hash_base=>$hash_base, file_name=>$file_name) .
3992                       qq!" />\n!;
3993         }
3994         close $fd
3995                 or print "Reading blob failed.\n";
3996         print "</div>";
3997         git_footer_html();
3998 }
3999
4000 sub git_tree {
4001         my $have_snapshot = gitweb_have_snapshot();
4002
4003         if (!defined $hash_base) {
4004                 $hash_base = "HEAD";
4005         }
4006         if (!defined $hash) {
4007                 if (defined $file_name) {
4008                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4009                 } else {
4010                         $hash = $hash_base;
4011                 }
4012         }
4013         $/ = "\0";
4014         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4015                 or die_error(undef, "Open git-ls-tree failed");
4016         my @entries = map { chomp; $_ } <$fd>;
4017         close $fd or die_error(undef, "Reading tree failed");
4018         $/ = "\n";
4019
4020         my $refs = git_get_references();
4021         my $ref = format_ref_marker($refs, $hash_base);
4022         git_header_html();
4023         my $basedir = '';
4024         my ($have_blame) = gitweb_check_feature('blame');
4025         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4026                 my @views_nav = ();
4027                 if (defined $file_name) {
4028                         push @views_nav,
4029                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4030                                                        hash=>$hash, file_name=>$file_name)},
4031                                         "history"),
4032                                 $cgi->a({-href => href(action=>"tree",
4033                                                        hash_base=>"HEAD", file_name=>$file_name)},
4034                                         "HEAD"),
4035                 }
4036                 if ($have_snapshot) {
4037                         # FIXME: Should be available when we have no hash base as well.
4038                         push @views_nav,
4039                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4040                                         "snapshot");
4041                 }
4042                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4043                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4044         } else {
4045                 undef $hash_base;
4046                 print "<div class=\"page_nav\">\n";
4047                 print "<br/><br/></div>\n";
4048                 print "<div class=\"title\">$hash</div>\n";
4049         }
4050         if (defined $file_name) {
4051                 $basedir = $file_name;
4052                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4053                         $basedir .= '/';
4054                 }
4055         }
4056         git_print_page_path($file_name, 'tree', $hash_base);
4057         print "<div class=\"page_body\">\n";
4058         print "<table cellspacing=\"0\">\n";
4059         my $alternate = 1;
4060         # '..' (top directory) link if possible
4061         if (defined $hash_base &&
4062             defined $file_name && $file_name =~ m![^/]+$!) {
4063                 if ($alternate) {
4064                         print "<tr class=\"dark\">\n";
4065                 } else {
4066                         print "<tr class=\"light\">\n";
4067                 }
4068                 $alternate ^= 1;
4069
4070                 my $up = $file_name;
4071                 $up =~ s!/?[^/]+$!!;
4072                 undef $up unless $up;
4073                 # based on git_print_tree_entry
4074                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4075                 print '<td class="list">';
4076                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4077                                              file_name=>$up)},
4078                               "..");
4079                 print "</td>\n";
4080                 print "<td class=\"link\"></td>\n";
4081
4082                 print "</tr>\n";
4083         }
4084         foreach my $line (@entries) {
4085                 my %t = parse_ls_tree_line($line, -z => 1);
4086
4087                 if ($alternate) {
4088                         print "<tr class=\"dark\">\n";
4089                 } else {
4090                         print "<tr class=\"light\">\n";
4091                 }
4092                 $alternate ^= 1;
4093
4094                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4095
4096                 print "</tr>\n";
4097         }
4098         print "</table>\n" .
4099               "</div>";
4100         git_footer_html();
4101 }
4102
4103 sub git_snapshot {
4104         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4105         my $have_snapshot = (defined $ctype && defined $suffix);
4106         if (!$have_snapshot) {
4107                 die_error('403 Permission denied', "Permission denied");
4108         }
4109
4110         if (!defined $hash) {
4111                 $hash = git_get_head_hash($project);
4112         }
4113
4114         my $git = git_cmd_str();
4115         my $name = $project;
4116         $name =~ s/\047/\047\\\047\047/g;
4117         my $filename = to_utf8(basename($project));
4118         my $cmd;
4119         if ($suffix eq 'zip') {
4120                 $filename .= "-$hash.$suffix";
4121                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4122         } else {
4123                 $filename .= "-$hash.tar.$suffix";
4124                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4125         }
4126
4127         print $cgi->header(
4128                 -type => "application/$ctype",
4129                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4130                 -status => '200 OK');
4131
4132         open my $fd, "-|", $cmd
4133                 or die_error(undef, "Execute git-archive failed");
4134         binmode STDOUT, ':raw';
4135         print <$fd>;
4136         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4137         close $fd;
4138
4139 }
4140
4141 sub git_log {
4142         my $head = git_get_head_hash($project);
4143         if (!defined $hash) {
4144                 $hash = $head;
4145         }
4146         if (!defined $page) {
4147                 $page = 0;
4148         }
4149         my $refs = git_get_references();
4150
4151         my @commitlist = parse_commits($hash, 101, (100 * $page));
4152
4153         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4154
4155         git_header_html();
4156         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4157
4158         if (!@commitlist) {
4159                 my %co = parse_commit($hash);
4160
4161                 git_print_header_div('summary', $project);
4162                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4163         }
4164         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4165         for (my $i = 0; $i <= $to; $i++) {
4166                 my %co = %{$commitlist[$i]};
4167                 next if !%co;
4168                 my $commit = $co{'id'};
4169                 my $ref = format_ref_marker($refs, $commit);
4170                 my %ad = parse_date($co{'author_epoch'});
4171                 git_print_header_div('commit',
4172                                "<span class=\"age\">$co{'age_string'}</span>" .
4173                                esc_html($co{'title'}) . $ref,
4174                                $commit);
4175                 print "<div class=\"title_text\">\n" .
4176                       "<div class=\"log_link\">\n" .
4177                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4178                       " | " .
4179                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4180                       " | " .
4181                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4182                       "<br/>\n" .
4183                       "</div>\n" .
4184                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4185                       "</div>\n";
4186
4187                 print "<div class=\"log_body\">\n";
4188                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4189                 print "</div>\n";
4190         }
4191         if ($#commitlist >= 100) {
4192                 print "<div class=\"page_nav\">\n";
4193                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4194                                -accesskey => "n", -title => "Alt-n"}, "next");
4195                 print "</div>\n";
4196         }
4197         git_footer_html();
4198 }
4199
4200 sub git_commit {
4201         $hash ||= $hash_base || "HEAD";
4202         my %co = parse_commit($hash);
4203         if (!%co) {
4204                 die_error(undef, "Unknown commit object");
4205         }
4206         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4207         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4208
4209         my $parent  = $co{'parent'};
4210         my $parents = $co{'parents'}; # listref
4211
4212         # we need to prepare $formats_nav before any parameter munging
4213         my $formats_nav;
4214         if (!defined $parent) {
4215                 # --root commitdiff
4216                 $formats_nav .= '(initial)';
4217         } elsif (@$parents == 1) {
4218                 # single parent commit
4219                 $formats_nav .=
4220                         '(parent: ' .
4221                         $cgi->a({-href => href(action=>"commit",
4222                                                hash=>$parent)},
4223                                 esc_html(substr($parent, 0, 7))) .
4224                         ')';
4225         } else {
4226                 # merge commit
4227                 $formats_nav .=
4228                         '(merge: ' .
4229                         join(' ', map {
4230                                 $cgi->a({-href => href(action=>"commit",
4231                                                        hash=>$_)},
4232                                         esc_html(substr($_, 0, 7)));
4233                         } @$parents ) .
4234                         ')';
4235         }
4236
4237         if (!defined $parent) {
4238                 $parent = "--root";
4239         }
4240         my @difftree;
4241         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4242                 @diff_opts,
4243                 (@$parents <= 1 ? $parent : '-c'),
4244                 $hash, "--"
4245                 or die_error(undef, "Open git-diff-tree failed");
4246         @difftree = map { chomp; $_ } <$fd>;
4247         close $fd or die_error(undef, "Reading git-diff-tree failed");
4248
4249         # non-textual hash id's can be cached
4250         my $expires;
4251         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4252                 $expires = "+1d";
4253         }
4254         my $refs = git_get_references();
4255         my $ref = format_ref_marker($refs, $co{'id'});
4256
4257         my $have_snapshot = gitweb_have_snapshot();
4258
4259         git_header_html(undef, $expires);
4260         git_print_page_nav('commit', '',
4261                            $hash, $co{'tree'}, $hash,
4262                            $formats_nav);
4263
4264         if (defined $co{'parent'}) {
4265                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4266         } else {
4267                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4268         }
4269         print "<div class=\"title_text\">\n" .
4270               "<table cellspacing=\"0\">\n";
4271         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4272               "<tr>" .
4273               "<td></td><td> $ad{'rfc2822'}";
4274         if ($ad{'hour_local'} < 6) {
4275                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4276                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4277         } else {
4278                 printf(" (%02d:%02d %s)",
4279                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4280         }
4281         print "</td>" .
4282               "</tr>\n";
4283         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4284         print "<tr><td></td><td> $cd{'rfc2822'}" .
4285               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4286               "</td></tr>\n";
4287         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4288         print "<tr>" .
4289               "<td>tree</td>" .
4290               "<td class=\"sha1\">" .
4291               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4292                        class => "list"}, $co{'tree'}) .
4293               "</td>" .
4294               "<td class=\"link\">" .
4295               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4296                       "tree");
4297         if ($have_snapshot) {
4298                 print " | " .
4299                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4300         }
4301         print "</td>" .
4302               "</tr>\n";
4303
4304         foreach my $par (@$parents) {
4305                 print "<tr>" .
4306                       "<td>parent</td>" .
4307                       "<td class=\"sha1\">" .
4308                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4309                                class => "list"}, $par) .
4310                       "</td>" .
4311                       "<td class=\"link\">" .
4312                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4313                       " | " .
4314                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4315                       "</td>" .
4316                       "</tr>\n";
4317         }
4318         print "</table>".
4319               "</div>\n";
4320
4321         print "<div class=\"page_body\">\n";
4322         git_print_log($co{'comment'});
4323         print "</div>\n";
4324
4325         git_difftree_body(\@difftree, $hash, @$parents);
4326
4327         git_footer_html();
4328 }
4329
4330 sub git_object {
4331         # object is defined by:
4332         # - hash or hash_base alone
4333         # - hash_base and file_name
4334         my $type;
4335
4336         # - hash or hash_base alone
4337         if ($hash || ($hash_base && !defined $file_name)) {
4338                 my $object_id = $hash || $hash_base;
4339
4340                 my $git_command = git_cmd_str();
4341                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4342                         or die_error('404 Not Found', "Object does not exist");
4343                 $type = <$fd>;
4344                 chomp $type;
4345                 close $fd
4346                         or die_error('404 Not Found', "Object does not exist");
4347
4348         # - hash_base and file_name
4349         } elsif ($hash_base && defined $file_name) {
4350                 $file_name =~ s,/+$,,;
4351
4352                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4353                         or die_error('404 Not Found', "Base object does not exist");
4354
4355                 # here errors should not hapen
4356                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4357                         or die_error(undef, "Open git-ls-tree failed");
4358                 my $line = <$fd>;
4359                 close $fd;
4360
4361                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4362                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4363                         die_error('404 Not Found', "File or directory for given base does not exist");
4364                 }
4365                 $type = $2;
4366                 $hash = $3;
4367         } else {
4368                 die_error('404 Not Found', "Not enough information to find object");
4369         }
4370
4371         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4372                                           hash=>$hash, hash_base=>$hash_base,
4373                                           file_name=>$file_name),
4374                              -status => '302 Found');
4375 }
4376
4377 sub git_blobdiff {
4378         my $format = shift || 'html';
4379
4380         my $fd;
4381         my @difftree;
4382         my %diffinfo;
4383         my $expires;
4384
4385         # preparing $fd and %diffinfo for git_patchset_body
4386         # new style URI
4387         if (defined $hash_base && defined $hash_parent_base) {
4388                 if (defined $file_name) {
4389                         # read raw output
4390                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4391                                 $hash_parent_base, $hash_base,
4392                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4393                                 or die_error(undef, "Open git-diff-tree failed");
4394                         @difftree = map { chomp; $_ } <$fd>;
4395                         close $fd
4396                                 or die_error(undef, "Reading git-diff-tree failed");
4397                         @difftree
4398                                 or die_error('404 Not Found', "Blob diff not found");
4399
4400                 } elsif (defined $hash &&
4401                          $hash =~ /[0-9a-fA-F]{40}/) {
4402                         # try to find filename from $hash
4403
4404                         # read filtered raw output
4405                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4406                                 $hash_parent_base, $hash_base, "--"
4407                                 or die_error(undef, "Open git-diff-tree failed");
4408                         @difftree =
4409                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4410                                 # $hash == to_id
4411                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4412                                 map { chomp; $_ } <$fd>;
4413                         close $fd
4414                                 or die_error(undef, "Reading git-diff-tree failed");
4415                         @difftree
4416                                 or die_error('404 Not Found', "Blob diff not found");
4417
4418                 } else {
4419                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4420                 }
4421
4422                 if (@difftree > 1) {
4423                         die_error('404 Not Found', "Ambiguous blob diff specification");
4424                 }
4425
4426                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4427                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4428                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4429
4430                 $hash_parent ||= $diffinfo{'from_id'};
4431                 $hash        ||= $diffinfo{'to_id'};
4432
4433                 # non-textual hash id's can be cached
4434                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4435                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4436                         $expires = '+1d';
4437                 }
4438
4439                 # open patch output
4440                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4441                         '-p', ($format eq 'html' ? "--full-index" : ()),
4442                         $hash_parent_base, $hash_base,
4443                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4444                         or die_error(undef, "Open git-diff-tree failed");
4445         }
4446
4447         # old/legacy style URI
4448         if (!%diffinfo && # if new style URI failed
4449             defined $hash && defined $hash_parent) {
4450                 # fake git-diff-tree raw output
4451                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4452                 $diffinfo{'from_id'} = $hash_parent;
4453                 $diffinfo{'to_id'}   = $hash;
4454                 if (defined $file_name) {
4455                         if (defined $file_parent) {
4456                                 $diffinfo{'status'} = '2';
4457                                 $diffinfo{'from_file'} = $file_parent;
4458                                 $diffinfo{'to_file'}   = $file_name;
4459                         } else { # assume not renamed
4460                                 $diffinfo{'status'} = '1';
4461                                 $diffinfo{'from_file'} = $file_name;
4462                                 $diffinfo{'to_file'}   = $file_name;
4463                         }
4464                 } else { # no filename given
4465                         $diffinfo{'status'} = '2';
4466                         $diffinfo{'from_file'} = $hash_parent;
4467                         $diffinfo{'to_file'}   = $hash;
4468                 }
4469
4470                 # non-textual hash id's can be cached
4471                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4472                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4473                         $expires = '+1d';
4474                 }
4475
4476                 # open patch output
4477                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4478                         '-p', ($format eq 'html' ? "--full-index" : ()),
4479                         $hash_parent, $hash, "--"
4480                         or die_error(undef, "Open git-diff failed");
4481         } else  {
4482                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4483                         unless %diffinfo;
4484         }
4485
4486         # header
4487         if ($format eq 'html') {
4488                 my $formats_nav =
4489                         $cgi->a({-href => href(action=>"blobdiff_plain",
4490                                                hash=>$hash, hash_parent=>$hash_parent,
4491                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4492                                                file_name=>$file_name, file_parent=>$file_parent)},
4493                                 "raw");
4494                 git_header_html(undef, $expires);
4495                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4496                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4497                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4498                 } else {
4499                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4500                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4501                 }
4502                 if (defined $file_name) {
4503                         git_print_page_path($file_name, "blob", $hash_base);
4504                 } else {
4505                         print "<div class=\"page_path\"></div>\n";
4506                 }
4507
4508         } elsif ($format eq 'plain') {
4509                 print $cgi->header(
4510                         -type => 'text/plain',
4511                         -charset => 'utf-8',
4512                         -expires => $expires,
4513                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4514
4515                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4516
4517         } else {
4518                 die_error(undef, "Unknown blobdiff format");
4519         }
4520
4521         # patch
4522         if ($format eq 'html') {
4523                 print "<div class=\"page_body\">\n";
4524
4525                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4526                 close $fd;
4527
4528                 print "</div>\n"; # class="page_body"
4529                 git_footer_html();
4530
4531         } else {
4532                 while (my $line = <$fd>) {
4533                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4534                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4535
4536                         print $line;
4537
4538                         last if $line =~ m!^\+\+\+!;
4539                 }
4540                 local $/ = undef;
4541                 print <$fd>;
4542                 close $fd;
4543         }
4544 }
4545
4546 sub git_blobdiff_plain {
4547         git_blobdiff('plain');
4548 }
4549
4550 sub git_commitdiff {
4551         my $format = shift || 'html';
4552         $hash ||= $hash_base || "HEAD";
4553         my %co = parse_commit($hash);
4554         if (!%co) {
4555                 die_error(undef, "Unknown commit object");
4556         }
4557
4558         # we need to prepare $formats_nav before any parameter munging
4559         my $formats_nav;
4560         if ($format eq 'html') {
4561                 $formats_nav =
4562                         $cgi->a({-href => href(action=>"commitdiff_plain",
4563                                                hash=>$hash, hash_parent=>$hash_parent)},
4564                                 "raw");
4565
4566                 if (defined $hash_parent) {
4567                         # commitdiff with two commits given
4568                         my $hash_parent_short = $hash_parent;
4569                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4570                                 $hash_parent_short = substr($hash_parent, 0, 7);
4571                         }
4572                         $formats_nav .=
4573                                 ' (from';
4574                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4575                                 if ($co{'parents'}[$i] eq $hash_parent) {
4576                                         $formats_nav .= ' parent ' . ($i+1);
4577                                         last;
4578                                 }
4579                         }
4580                         $formats_nav .= ': ' .
4581                                 $cgi->a({-href => href(action=>"commitdiff",
4582                                                        hash=>$hash_parent)},
4583                                         esc_html($hash_parent_short)) .
4584                                 ')';
4585                 } elsif (!$co{'parent'}) {
4586                         # --root commitdiff
4587                         $formats_nav .= ' (initial)';
4588                 } elsif (scalar @{$co{'parents'}} == 1) {
4589                         # single parent commit
4590                         $formats_nav .=
4591                                 ' (parent: ' .
4592                                 $cgi->a({-href => href(action=>"commitdiff",
4593                                                        hash=>$co{'parent'})},
4594                                         esc_html(substr($co{'parent'}, 0, 7))) .
4595                                 ')';
4596                 } else {
4597                         # merge commit
4598                         $formats_nav .=
4599                                 ' (merge: ' .
4600                                 join(' ', map {
4601                                         $cgi->a({-href => href(action=>"commitdiff",
4602                                                                hash=>$_)},
4603                                                 esc_html(substr($_, 0, 7)));
4604                                 } @{$co{'parents'}} ) .
4605                                 ')';
4606                 }
4607         }
4608
4609         my $hash_parent_param = $hash_parent;
4610         if (!defined $hash_parent) {
4611                 $hash_parent_param =
4612                         @{$co{'parents'}} > 1 ? '-c' : $co{'parent'} || '--root';
4613         }
4614
4615         # read commitdiff
4616         my $fd;
4617         my @difftree;
4618         if ($format eq 'html') {
4619                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4620                         "--no-commit-id", "--patch-with-raw", "--full-index",
4621                         $hash_parent_param, $hash, "--"
4622                         or die_error(undef, "Open git-diff-tree failed");
4623
4624                 while (my $line = <$fd>) {
4625                         chomp $line;
4626                         # empty line ends raw part of diff-tree output
4627                         last unless $line;
4628                         push @difftree, scalar parse_difftree_raw_line($line);
4629                 }
4630
4631         } elsif ($format eq 'plain') {
4632                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4633                         '-p', $hash_parent_param, $hash, "--"
4634                         or die_error(undef, "Open git-diff-tree failed");
4635
4636         } else {
4637                 die_error(undef, "Unknown commitdiff format");
4638         }
4639
4640         # non-textual hash id's can be cached
4641         my $expires;
4642         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4643                 $expires = "+1d";
4644         }
4645
4646         # write commit message
4647         if ($format eq 'html') {
4648                 my $refs = git_get_references();
4649                 my $ref = format_ref_marker($refs, $co{'id'});
4650
4651                 git_header_html(undef, $expires);
4652                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4653                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4654                 git_print_authorship(\%co);
4655                 print "<div class=\"page_body\">\n";
4656                 if (@{$co{'comment'}} > 1) {
4657                         print "<div class=\"log\">\n";
4658                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4659                         print "</div>\n"; # class="log"
4660                 }
4661
4662         } elsif ($format eq 'plain') {
4663                 my $refs = git_get_references("tags");
4664                 my $tagname = git_get_rev_name_tags($hash);
4665                 my $filename = basename($project) . "-$hash.patch";
4666
4667                 print $cgi->header(
4668                         -type => 'text/plain',
4669                         -charset => 'utf-8',
4670                         -expires => $expires,
4671                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4672                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4673                 print <<TEXT;
4674 From: $co{'author'}
4675 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4676 Subject: $co{'title'}
4677 TEXT
4678                 print "X-Git-Tag: $tagname\n" if $tagname;
4679                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4680
4681                 foreach my $line (@{$co{'comment'}}) {
4682                         print "$line\n";
4683                 }
4684                 print "---\n\n";
4685         }
4686
4687         # write patch
4688         if ($format eq 'html') {
4689                 git_difftree_body(\@difftree, $hash, $hash_parent || @{$co{'parents'}});
4690                 print "<br/>\n";
4691
4692                 git_patchset_body($fd, \@difftree, $hash, $hash_parent || @{$co{'parents'}});
4693                 close $fd;
4694                 print "</div>\n"; # class="page_body"
4695                 git_footer_html();
4696
4697         } elsif ($format eq 'plain') {
4698                 local $/ = undef;
4699                 print <$fd>;
4700                 close $fd
4701                         or print "Reading git-diff-tree failed\n";
4702         }
4703 }
4704
4705 sub git_commitdiff_plain {
4706         git_commitdiff('plain');
4707 }
4708
4709 sub git_history {
4710         if (!defined $hash_base) {
4711                 $hash_base = git_get_head_hash($project);
4712         }
4713         if (!defined $page) {
4714                 $page = 0;
4715         }
4716         my $ftype;
4717         my %co = parse_commit($hash_base);
4718         if (!%co) {
4719                 die_error(undef, "Unknown commit object");
4720         }
4721
4722         my $refs = git_get_references();
4723         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4724
4725         if (!defined $hash && defined $file_name) {
4726                 $hash = git_get_hash_by_path($hash_base, $file_name);
4727         }
4728         if (defined $hash) {
4729                 $ftype = git_get_type($hash);
4730         }
4731
4732         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4733
4734         my $paging_nav = '';
4735         if ($page > 0) {
4736                 $paging_nav .=
4737                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4738                                                file_name=>$file_name)},
4739                                 "first");
4740                 $paging_nav .= " &sdot; " .
4741                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4742                                                file_name=>$file_name, page=>$page-1),
4743                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4744         } else {
4745                 $paging_nav .= "first";
4746                 $paging_nav .= " &sdot; prev";
4747         }
4748         if ($#commitlist >= 100) {
4749                 $paging_nav .= " &sdot; " .
4750                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4751                                                file_name=>$file_name, page=>$page+1),
4752                                  -accesskey => "n", -title => "Alt-n"}, "next");
4753         } else {
4754                 $paging_nav .= " &sdot; next";
4755         }
4756         my $next_link = '';
4757         if ($#commitlist >= 100) {
4758                 $next_link =
4759                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4760                                                file_name=>$file_name, page=>$page+1),
4761                                  -accesskey => "n", -title => "Alt-n"}, "next");
4762         }
4763
4764         git_header_html();
4765         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4766         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4767         git_print_page_path($file_name, $ftype, $hash_base);
4768
4769         git_history_body(\@commitlist, 0, 99,
4770                          $refs, $hash_base, $ftype, $next_link);
4771
4772         git_footer_html();
4773 }
4774
4775 sub git_search {
4776         my ($have_search) = gitweb_check_feature('search');
4777         if (!$have_search) {
4778                 die_error('403 Permission denied', "Permission denied");
4779         }
4780         if (!defined $searchtext) {
4781                 die_error(undef, "Text field empty");
4782         }
4783         if (!defined $hash) {
4784                 $hash = git_get_head_hash($project);
4785         }
4786         my %co = parse_commit($hash);
4787         if (!%co) {
4788                 die_error(undef, "Unknown commit object");
4789         }
4790         if (!defined $page) {
4791                 $page = 0;
4792         }
4793
4794         $searchtype ||= 'commit';
4795         if ($searchtype eq 'pickaxe') {
4796                 # pickaxe may take all resources of your box and run for several minutes
4797                 # with every query - so decide by yourself how public you make this feature
4798                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4799                 if (!$have_pickaxe) {
4800                         die_error('403 Permission denied', "Permission denied");
4801                 }
4802         }
4803         if ($searchtype eq 'grep') {
4804                 my ($have_grep) = gitweb_check_feature('grep');
4805                 if (!$have_grep) {
4806                         die_error('403 Permission denied', "Permission denied");
4807                 }
4808         }
4809
4810         git_header_html();
4811
4812         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4813                 my $greptype;
4814                 if ($searchtype eq 'commit') {
4815                         $greptype = "--grep=";
4816                 } elsif ($searchtype eq 'author') {
4817                         $greptype = "--author=";
4818                 } elsif ($searchtype eq 'committer') {
4819                         $greptype = "--committer=";
4820                 }
4821                 $greptype .= $search_regexp;
4822                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4823
4824                 my $paging_nav = '';
4825                 if ($page > 0) {
4826                         $paging_nav .=
4827                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4828                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4829                                         "first");
4830                         $paging_nav .= " &sdot; " .
4831                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4832                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4833                                                        page=>$page-1),
4834                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4835                 } else {
4836                         $paging_nav .= "first";
4837                         $paging_nav .= " &sdot; prev";
4838                 }
4839                 if ($#commitlist >= 100) {
4840                         $paging_nav .= " &sdot; " .
4841                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4842                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4843                                                        page=>$page+1),
4844                                          -accesskey => "n", -title => "Alt-n"}, "next");
4845                 } else {
4846                         $paging_nav .= " &sdot; next";
4847                 }
4848                 my $next_link = '';
4849                 if ($#commitlist >= 100) {
4850                         $next_link =
4851                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4852                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4853                                                        page=>$page+1),
4854                                          -accesskey => "n", -title => "Alt-n"}, "next");
4855                 }
4856
4857                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4858                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4859                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4860         }
4861
4862         if ($searchtype eq 'pickaxe') {
4863                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4864                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4865
4866                 print "<table cellspacing=\"0\">\n";
4867                 my $alternate = 1;
4868                 $/ = "\n";
4869                 my $git_command = git_cmd_str();
4870                 my $searchqtext = $searchtext;
4871                 $searchqtext =~ s/'/'\\''/;
4872                 open my $fd, "-|", "$git_command rev-list $hash | " .
4873                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
4874                 undef %co;
4875                 my @files;
4876                 while (my $line = <$fd>) {
4877                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4878                                 my %set;
4879                                 $set{'file'} = $6;
4880                                 $set{'from_id'} = $3;
4881                                 $set{'to_id'} = $4;
4882                                 $set{'id'} = $set{'to_id'};
4883                                 if ($set{'id'} =~ m/0{40}/) {
4884                                         $set{'id'} = $set{'from_id'};
4885                                 }
4886                                 if ($set{'id'} =~ m/0{40}/) {
4887                                         next;
4888                                 }
4889                                 push @files, \%set;
4890                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4891                                 if (%co) {
4892                                         if ($alternate) {
4893                                                 print "<tr class=\"dark\">\n";
4894                                         } else {
4895                                                 print "<tr class=\"light\">\n";
4896                                         }
4897                                         $alternate ^= 1;
4898                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4899                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4900                                               "<td>" .
4901                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4902                                                       -class => "list subject"},
4903                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4904                                         while (my $setref = shift @files) {
4905                                                 my %set = %$setref;
4906                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4907                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4908                                                               -class => "list"},
4909                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4910                                                       "<br/>\n";
4911                                         }
4912                                         print "</td>\n" .
4913                                               "<td class=\"link\">" .
4914                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4915                                               " | " .
4916                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4917                                         print "</td>\n" .
4918                                               "</tr>\n";
4919                                 }
4920                                 %co = parse_commit($1);
4921                         }
4922                 }
4923                 close $fd;
4924
4925                 print "</table>\n";
4926         }
4927
4928         if ($searchtype eq 'grep') {
4929                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4930                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4931
4932                 print "<table cellspacing=\"0\">\n";
4933                 my $alternate = 1;
4934                 my $matches = 0;
4935                 $/ = "\n";
4936                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
4937                 my $lastfile = '';
4938                 while (my $line = <$fd>) {
4939                         chomp $line;
4940                         my ($file, $lno, $ltext, $binary);
4941                         last if ($matches++ > 1000);
4942                         if ($line =~ /^Binary file (.+) matches$/) {
4943                                 $file = $1;
4944                                 $binary = 1;
4945                         } else {
4946                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
4947                         }
4948                         if ($file ne $lastfile) {
4949                                 $lastfile and print "</td></tr>\n";
4950                                 if ($alternate++) {
4951                                         print "<tr class=\"dark\">\n";
4952                                 } else {
4953                                         print "<tr class=\"light\">\n";
4954                                 }
4955                                 print "<td class=\"list\">".
4956                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
4957                                                                file_name=>"$file"),
4958                                                 -class => "list"}, esc_path($file));
4959                                 print "</td><td>\n";
4960                                 $lastfile = $file;
4961                         }
4962                         if ($binary) {
4963                                 print "<div class=\"binary\">Binary file</div>\n";
4964                         } else {
4965                                 $ltext = untabify($ltext);
4966                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
4967                                         $ltext = esc_html($1, -nbsp=>1);
4968                                         $ltext .= '<span class="match">';
4969                                         $ltext .= esc_html($2, -nbsp=>1);
4970                                         $ltext .= '</span>';
4971                                         $ltext .= esc_html($3, -nbsp=>1);
4972                                 } else {
4973                                         $ltext = esc_html($ltext, -nbsp=>1);
4974                                 }
4975                                 print "<div class=\"pre\">" .
4976                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
4977                                                                file_name=>"$file").'#l'.$lno,
4978                                                 -class => "linenr"}, sprintf('%4i', $lno))
4979                                         . ' ' .  $ltext . "</div>\n";
4980                         }
4981                 }
4982                 if ($lastfile) {
4983                         print "</td></tr>\n";
4984                         if ($matches > 1000) {
4985                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
4986                         }
4987                 } else {
4988                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
4989                 }
4990                 close $fd;
4991
4992                 print "</table>\n";
4993         }
4994         git_footer_html();
4995 }
4996
4997 sub git_search_help {
4998         git_header_html();
4999         git_print_page_nav('','', $hash,$hash,$hash);
5000         print <<EOT;
5001 <dl>
5002 <dt><b>commit</b></dt>
5003 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5004 EOT
5005         my ($have_grep) = gitweb_check_feature('grep');
5006         if ($have_grep) {
5007                 print <<EOT;
5008 <dt><b>grep</b></dt>
5009 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5010     a different one) are searched for the given
5011 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5012 (POSIX extended) and the matches are listed. On large
5013 trees, this search can take a while and put some strain on the server, so please use it with
5014 some consideration.</dd>
5015 EOT
5016         }
5017         print <<EOT;
5018 <dt><b>author</b></dt>
5019 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5020 <dt><b>committer</b></dt>
5021 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5022 EOT
5023         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5024         if ($have_pickaxe) {
5025                 print <<EOT;
5026 <dt><b>pickaxe</b></dt>
5027 <dd>All commits that caused the string to appear or disappear from any file (changes that
5028 added, removed or "modified" the string) will be listed. This search can take a while and
5029 takes a lot of strain on the server, so please use it wisely.</dd>
5030 EOT
5031         }
5032         print "</dl>\n";
5033         git_footer_html();
5034 }
5035
5036 sub git_shortlog {
5037         my $head = git_get_head_hash($project);
5038         if (!defined $hash) {
5039                 $hash = $head;
5040         }
5041         if (!defined $page) {
5042                 $page = 0;
5043         }
5044         my $refs = git_get_references();
5045
5046         my @commitlist = parse_commits($hash, 101, (100 * $page));
5047
5048         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5049         my $next_link = '';
5050         if ($#commitlist >= 100) {
5051                 $next_link =
5052                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5053                                  -accesskey => "n", -title => "Alt-n"}, "next");
5054         }
5055
5056         git_header_html();
5057         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5058         git_print_header_div('summary', $project);
5059
5060         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5061
5062         git_footer_html();
5063 }
5064
5065 ## ......................................................................
5066 ## feeds (RSS, Atom; OPML)
5067
5068 sub git_feed {
5069         my $format = shift || 'atom';
5070         my ($have_blame) = gitweb_check_feature('blame');
5071
5072         # Atom: http://www.atomenabled.org/developers/syndication/
5073         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5074         if ($format ne 'rss' && $format ne 'atom') {
5075                 die_error(undef, "Unknown web feed format");
5076         }
5077
5078         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5079         my $head = $hash || 'HEAD';
5080         my @commitlist = parse_commits($head, 150);
5081
5082         my %latest_commit;
5083         my %latest_date;
5084         my $content_type = "application/$format+xml";
5085         if (defined $cgi->http('HTTP_ACCEPT') &&
5086                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5087                 # browser (feed reader) prefers text/xml
5088                 $content_type = 'text/xml';
5089         }
5090         if (defined($commitlist[0])) {
5091                 %latest_commit = %{$commitlist[0]};
5092                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5093                 print $cgi->header(
5094                         -type => $content_type,
5095                         -charset => 'utf-8',
5096                         -last_modified => $latest_date{'rfc2822'});
5097         } else {
5098                 print $cgi->header(
5099                         -type => $content_type,
5100                         -charset => 'utf-8');
5101         }
5102
5103         # Optimization: skip generating the body if client asks only
5104         # for Last-Modified date.
5105         return if ($cgi->request_method() eq 'HEAD');
5106
5107         # header variables
5108         my $title = "$site_name - $project/$action";
5109         my $feed_type = 'log';
5110         if (defined $hash) {
5111                 $title .= " - '$hash'";
5112                 $feed_type = 'branch log';
5113                 if (defined $file_name) {
5114                         $title .= " :: $file_name";
5115                         $feed_type = 'history';
5116                 }
5117         } elsif (defined $file_name) {
5118                 $title .= " - $file_name";
5119                 $feed_type = 'history';
5120         }
5121         $title .= " $feed_type";
5122         my $descr = git_get_project_description($project);
5123         if (defined $descr) {
5124                 $descr = esc_html($descr);
5125         } else {
5126                 $descr = "$project " .
5127                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5128                          " feed";
5129         }
5130         my $owner = git_get_project_owner($project);
5131         $owner = esc_html($owner);
5132
5133         #header
5134         my $alt_url;
5135         if (defined $file_name) {
5136                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5137         } elsif (defined $hash) {
5138                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5139         } else {
5140                 $alt_url = href(-full=>1, action=>"summary");
5141         }
5142         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5143         if ($format eq 'rss') {
5144                 print <<XML;
5145 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5146 <channel>
5147 XML
5148                 print "<title>$title</title>\n" .
5149                       "<link>$alt_url</link>\n" .
5150                       "<description>$descr</description>\n" .
5151                       "<language>en</language>\n";
5152         } elsif ($format eq 'atom') {
5153                 print <<XML;
5154 <feed xmlns="http://www.w3.org/2005/Atom">
5155 XML
5156                 print "<title>$title</title>\n" .
5157                       "<subtitle>$descr</subtitle>\n" .
5158                       '<link rel="alternate" type="text/html" href="' .
5159                       $alt_url . '" />' . "\n" .
5160                       '<link rel="self" type="' . $content_type . '" href="' .
5161                       $cgi->self_url() . '" />' . "\n" .
5162                       "<id>" . href(-full=>1) . "</id>\n" .
5163                       # use project owner for feed author
5164                       "<author><name>$owner</name></author>\n";
5165                 if (defined $favicon) {
5166                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5167                 }
5168                 if (defined $logo_url) {
5169                         # not twice as wide as tall: 72 x 27 pixels
5170                         print "<logo>" . esc_url($logo) . "</logo>\n";
5171                 }
5172                 if (! %latest_date) {
5173                         # dummy date to keep the feed valid until commits trickle in:
5174                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5175                 } else {
5176                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5177                 }
5178         }
5179
5180         # contents
5181         for (my $i = 0; $i <= $#commitlist; $i++) {
5182                 my %co = %{$commitlist[$i]};
5183                 my $commit = $co{'id'};
5184                 # we read 150, we always show 30 and the ones more recent than 48 hours
5185                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5186                         last;
5187                 }
5188                 my %cd = parse_date($co{'author_epoch'});
5189
5190                 # get list of changed files
5191                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5192                         $co{'parent'} || "--root",
5193                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5194                         or next;
5195                 my @difftree = map { chomp; $_ } <$fd>;
5196                 close $fd
5197                         or next;
5198
5199                 # print element (entry, item)
5200                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5201                 if ($format eq 'rss') {
5202                         print "<item>\n" .
5203                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5204                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5205                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5206                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5207                               "<link>$co_url</link>\n" .
5208                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5209                               "<content:encoded>" .
5210                               "<![CDATA[\n";
5211                 } elsif ($format eq 'atom') {
5212                         print "<entry>\n" .
5213                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5214                               "<updated>$cd{'iso-8601'}</updated>\n" .
5215                               "<author>\n" .
5216                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5217                         if ($co{'author_email'}) {
5218                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5219                         }
5220                         print "</author>\n" .
5221                               # use committer for contributor
5222                               "<contributor>\n" .
5223                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5224                         if ($co{'committer_email'}) {
5225                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5226                         }
5227                         print "</contributor>\n" .
5228                               "<published>$cd{'iso-8601'}</published>\n" .
5229                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5230                               "<id>$co_url</id>\n" .
5231                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5232                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5233                 }
5234                 my $comment = $co{'comment'};
5235                 print "<pre>\n";
5236                 foreach my $line (@$comment) {
5237                         $line = esc_html($line);
5238                         print "$line\n";
5239                 }
5240                 print "</pre><ul>\n";
5241                 foreach my $difftree_line (@difftree) {
5242                         my %difftree = parse_difftree_raw_line($difftree_line);
5243                         next if !$difftree{'from_id'};
5244
5245                         my $file = $difftree{'file'} || $difftree{'to_file'};
5246
5247                         print "<li>" .
5248                               "[" .
5249                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5250                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5251                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5252                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5253                                       -title => "diff"}, 'D');
5254                         if ($have_blame) {
5255                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5256                                                              file_name=>$file, hash_base=>$commit),
5257                                               -title => "blame"}, 'B');
5258                         }
5259                         # if this is not a feed of a file history
5260                         if (!defined $file_name || $file_name ne $file) {
5261                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5262                                                              file_name=>$file, hash=>$commit),
5263                                               -title => "history"}, 'H');
5264                         }
5265                         $file = esc_path($file);
5266                         print "] ".
5267                               "$file</li>\n";
5268                 }
5269                 if ($format eq 'rss') {
5270                         print "</ul>]]>\n" .
5271                               "</content:encoded>\n" .
5272                               "</item>\n";
5273                 } elsif ($format eq 'atom') {
5274                         print "</ul>\n</div>\n" .
5275                               "</content>\n" .
5276                               "</entry>\n";
5277                 }
5278         }
5279
5280         # end of feed
5281         if ($format eq 'rss') {
5282                 print "</channel>\n</rss>\n";
5283         }       elsif ($format eq 'atom') {
5284                 print "</feed>\n";
5285         }
5286 }
5287
5288 sub git_rss {
5289         git_feed('rss');
5290 }
5291
5292 sub git_atom {
5293         git_feed('atom');
5294 }
5295
5296 sub git_opml {
5297         my @list = git_get_projects_list();
5298
5299         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5300         print <<XML;
5301 <?xml version="1.0" encoding="utf-8"?>
5302 <opml version="1.0">
5303 <head>
5304   <title>$site_name OPML Export</title>
5305 </head>
5306 <body>
5307 <outline text="git RSS feeds">
5308 XML
5309
5310         foreach my $pr (@list) {
5311                 my %proj = %$pr;
5312                 my $head = git_get_head_hash($proj{'path'});
5313                 if (!defined $head) {
5314                         next;
5315                 }
5316                 $git_dir = "$projectroot/$proj{'path'}";
5317                 my %co = parse_commit($head);
5318                 if (!%co) {
5319                         next;
5320                 }
5321
5322                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5323                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5324                 my $html = "$my_url?p=$proj{'path'};a=summary";
5325                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5326         }
5327         print <<XML;
5328 </outline>
5329 </body>
5330 </opml>
5331 XML
5332 }