Lady’s Gitweb - Gitweb/blob - 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
  61 # URI of GIT logo (72x27 size)
  62 our $logo = "++GITWEB_LOGO++";
  63 # URI of GIT favicon, assumed to be image/png type
  64 our $favicon = "++GITWEB_FAVICON++";
  65
  66 # URI and label (title) of GIT logo link
  67 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  68 #our $logo_label = "git documentation";
  69 our $logo_url = "http://git.or.cz/";
  70 our $logo_label = "git homepage";
  71
  72 # source of projects list
  73 our $projects_list = "++GITWEB_LIST++";
  74
  75 # the width (in characters) of the projects list "Description" column
  76 our $projects_list_description_width = 25;
  77
  78 # default order of projects list
  79 # valid values are none, project, descr, owner, and age
  80 our $default_projects_order = "project";
  81
  82 # show repository only if this file exists
  83 # (only effective if this variable evaluates to true)
  84 our $export_ok = "++GITWEB_EXPORT_OK++";
  85
  86 # only allow viewing of repositories also shown on the overview page
  87 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  88
  89 # list of git base URLs used for URL to where fetch project from,
  90 # i.e. full URL is "$git_base_url/$project"
  91 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  92
  93 # default blob_plain mimetype and default charset for text/plain blob
  94 our $default_blob_plain_mimetype = 'text/plain';
  95 our $default_text_plain_charset  = undef;
  96
  97 # file to use for guessing MIME types before trying /etc/mime.types
  98 # (relative to the current git repository)
  99 our $mimetypes_file = undef;
 100
 101 # assume this charset if line contains non-UTF-8 characters;
 102 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 103 # for which encoding all byte sequences are valid, for example
 104 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 105 # could be even 'utf-8' for the old behavior)
 106 our $fallback_encoding = 'latin1';
 107
 108 # You define site-wide feature defaults here; override them with
 109 # $GITWEB_CONFIG as necessary.
 110 our %feature = (
 111         # feature => {
 112         #       'sub' => feature-sub (subroutine),
 113         #       'override' => allow-override (boolean),
 114         #       'default' => [ default options...] (array reference)}
 115         #
 116         # if feature is overridable (it means that allow-override has true value),
 117         # then feature-sub will be called with default options as parameters;
 118         # return value of feature-sub indicates if to enable specified feature
 119         #
 120         # if there is no 'sub' key (no feature-sub), then feature cannot be
 121         # overriden
 122         #
 123         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 124
 125         # Enable the 'blame' blob view, showing the last commit that modified
 126         # each line in the file. This can be very CPU-intensive.
 127
 128         # To enable system wide have in $GITWEB_CONFIG
 129         # $feature{'blame'}{'default'} = [1];
 130         # To have project specific config enable override in $GITWEB_CONFIG
 131         # $feature{'blame'}{'override'} = 1;
 132         # and in project config gitweb.blame = 0|1;
 133         'blame' => {
 134                 'sub' => \&feature_blame,
 135                 'override' => 0,
 136                 'default' => [0]},
 137
 138         # Enable the 'snapshot' link, providing a compressed tarball of any
 139         # tree. This can potentially generate high traffic if you have large
 140         # project.
 141
 142         # To disable system wide have in $GITWEB_CONFIG
 143         # $feature{'snapshot'}{'default'} = [undef];
 144         # To have project specific config enable override in $GITWEB_CONFIG
 145         # $feature{'snapshot'}{'override'} = 1;
 146         # and in project config gitweb.snapshot = none|gzip|bzip2|zip;
 147         'snapshot' => {
 148                 'sub' => \&feature_snapshot,
 149                 'override' => 0,
 150                 #         => [content-encoding, suffix, program]
 151                 'default' => ['x-gzip', 'gz', 'gzip']},
 152
 153         # Enable text search, which will list the commits which match author,
 154         # committer or commit text to a given string.  Enabled by default.
 155         # Project specific override is not supported.
 156         'search' => {
 157                 'override' => 0,
 158                 'default' => [1]},
 159
 160         # Enable grep search, which will list the files in currently selected
 161         # tree containing the given string. Enabled by default. This can be
 162         # potentially CPU-intensive, of course.
 163
 164         # To enable system wide have in $GITWEB_CONFIG
 165         # $feature{'grep'}{'default'} = [1];
 166         # To have project specific config enable override in $GITWEB_CONFIG
 167         # $feature{'grep'}{'override'} = 1;
 168         # and in project config gitweb.grep = 0|1;
 169         'grep' => {
 170                 'override' => 0,
 171                 'default' => [1]},
 172
 173         # Enable the pickaxe search, which will list the commits that modified
 174         # a given string in a file. This can be practical and quite faster
 175         # alternative to 'blame', but still potentially CPU-intensive.
 176
 177         # To enable system wide have in $GITWEB_CONFIG
 178         # $feature{'pickaxe'}{'default'} = [1];
 179         # To have project specific config enable override in $GITWEB_CONFIG
 180         # $feature{'pickaxe'}{'override'} = 1;
 181         # and in project config gitweb.pickaxe = 0|1;
 182         'pickaxe' => {
 183                 'sub' => \&feature_pickaxe,
 184                 'override' => 0,
 185                 'default' => [1]},
 186
 187         # Make gitweb use an alternative format of the URLs which can be
 188         # more readable and natural-looking: project name is embedded
 189         # directly in the path and the query string contains other
 190         # auxiliary information. All gitweb installations recognize
 191         # URL in either format; this configures in which formats gitweb
 192         # generates links.
 193
 194         # To enable system wide have in $GITWEB_CONFIG
 195         # $feature{'pathinfo'}{'default'} = [1];
 196         # Project specific override is not supported.
 197
 198         # Note that you will need to change the default location of CSS,
 199         # favicon, logo and possibly other files to an absolute URL. Also,
 200         # if gitweb.cgi serves as your indexfile, you will need to force
 201         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 202         'pathinfo' => {
 203                 'override' => 0,
 204                 'default' => [0]},
 205
 206         # Make gitweb consider projects in project root subdirectories
 207         # to be forks of existing projects. Given project $projname.git,
 208         # projects matching $projname/*.git will not be shown in the main
 209         # projects list, instead a '+' mark will be added to $projname
 210         # there and a 'forks' view will be enabled for the project, listing
 211         # all the forks. If project list is taken from a file, forks have
 212         # to be listed after the main project.
 213
 214         # To enable system wide have in $GITWEB_CONFIG
 215         # $feature{'forks'}{'default'} = [1];
 216         # Project specific override is not supported.
 217         'forks' => {
 218                 'override' => 0,
 219                 'default' => [0]},
 220 );
 221
 222 sub gitweb_check_feature {
 223         my ($name) = @_;
 224         return unless exists $feature{$name};
 225         my ($sub, $override, @defaults) = (
 226                 $feature{$name}{'sub'},
 227                 $feature{$name}{'override'},
 228                 @{$feature{$name}{'default'}});
 229         if (!$override) { return @defaults; }
 230         if (!defined $sub) {
 231                 warn "feature $name is not overrideable";
 232                 return @defaults;
 233         }
 234         return $sub->(@defaults);
 235 }
 236
 237 sub feature_blame {
 238         my ($val) = git_get_project_config('blame', '--bool');
 239
 240         if ($val eq 'true') {
 241                 return 1;
 242         } elsif ($val eq 'false') {
 243                 return 0;
 244         }
 245
 246         return $_[0];
 247 }
 248
 249 sub feature_snapshot {
 250         my ($ctype, $suffix, $command) = @_;
 251
 252         my ($val) = git_get_project_config('snapshot');
 253
 254         if ($val eq 'gzip') {
 255                 return ('x-gzip', 'gz', 'gzip');
 256         } elsif ($val eq 'bzip2') {
 257                 return ('x-bzip2', 'bz2', 'bzip2');
 258         } elsif ($val eq 'zip') {
 259                 return ('x-zip', 'zip', '');
 260         } elsif ($val eq 'none') {
 261                 return ();
 262         }
 263
 264         return ($ctype, $suffix, $command);
 265 }
 266
 267 sub gitweb_have_snapshot {
 268         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 269         my $have_snapshot = (defined $ctype && defined $suffix);
 270
 271         return $have_snapshot;
 272 }
 273
 274 sub feature_grep {
 275         my ($val) = git_get_project_config('grep', '--bool');
 276
 277         if ($val eq 'true') {
 278                 return (1);
 279         } elsif ($val eq 'false') {
 280                 return (0);
 281         }
 282
 283         return ($_[0]);
 284 }
 285
 286 sub feature_pickaxe {
 287         my ($val) = git_get_project_config('pickaxe', '--bool');
 288
 289         if ($val eq 'true') {
 290                 return (1);
 291         } elsif ($val eq 'false') {
 292                 return (0);
 293         }
 294
 295         return ($_[0]);
 296 }
 297
 298 # checking HEAD file with -e is fragile if the repository was
 299 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 300 # and then pruned.
 301 sub check_head_link {
 302         my ($dir) = @_;
 303         my $headfile = "$dir/HEAD";
 304         return ((-e $headfile) ||
 305                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 306 }
 307
 308 sub check_export_ok {
 309         my ($dir) = @_;
 310         return (check_head_link($dir) &&
 311                 (!$export_ok || -e "$dir/$export_ok"));
 312 }
 313
 314 # rename detection options for git-diff and git-diff-tree
 315 # - default is '-M', with the cost proportional to
 316 #   (number of removed files) * (number of new files).
 317 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 318 #   (number of changed files + number of removed files) * (number of new files)
 319 # - even more costly is '-C', '--find-copies-harder' with cost
 320 #   (number of files in the original tree) * (number of new files)
 321 # - one might want to include '-B' option, e.g. '-B', '-M'
 322 our @diff_opts = ('-M'); # taken from git_commit
 323
 324 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 325 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 326
 327 # version of the core git binary
 328 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 329
 330 $projects_list ||= $projectroot;
 331
 332 # ======================================================================
 333 # input validation and dispatch
 334 our $action = $cgi->param('a');
 335 if (defined $action) {
 336         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 337                 die_error(undef, "Invalid action parameter");
 338         }
 339 }
 340
 341 # parameters which are pathnames
 342 our $project = $cgi->param('p');
 343 if (defined $project) {
 344         if (!validate_pathname($project) ||
 345             !(-d "$projectroot/$project") ||
 346             !check_head_link("$projectroot/$project") ||
 347             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 348             ($strict_export && !project_in_list($project))) {
 349                 undef $project;
 350                 die_error(undef, "No such project");
 351         }
 352 }
 353
 354 our $file_name = $cgi->param('f');
 355 if (defined $file_name) {
 356         if (!validate_pathname($file_name)) {
 357                 die_error(undef, "Invalid file parameter");
 358         }
 359 }
 360
 361 our $file_parent = $cgi->param('fp');
 362 if (defined $file_parent) {
 363         if (!validate_pathname($file_parent)) {
 364                 die_error(undef, "Invalid file parent parameter");
 365         }
 366 }
 367
 368 # parameters which are refnames
 369 our $hash = $cgi->param('h');
 370 if (defined $hash) {
 371         if (!validate_refname($hash)) {
 372                 die_error(undef, "Invalid hash parameter");
 373         }
 374 }
 375
 376 our $hash_parent = $cgi->param('hp');
 377 if (defined $hash_parent) {
 378         if (!validate_refname($hash_parent)) {
 379                 die_error(undef, "Invalid hash parent parameter");
 380         }
 381 }
 382
 383 our $hash_base = $cgi->param('hb');
 384 if (defined $hash_base) {
 385         if (!validate_refname($hash_base)) {
 386                 die_error(undef, "Invalid hash base parameter");
 387         }
 388 }
 389
 390 my %allowed_options = (
 391         "--no-merges" => [ qw(rss atom log shortlog history) ],
 392 );
 393
 394 our @extra_options = $cgi->param('opt');
 395 if (defined @extra_options) {
 396         foreach(@extra_options)
 397         {
 398                 if (not grep(/^$_$/, keys %allowed_options)) {
 399                         die_error(undef, "Invalid option parameter");
 400                 }
 401                 if (not grep(/^$action$/, @{$allowed_options{$_}})) {
 402                         die_error(undef, "Invalid option parameter for this action");
 403                 }
 404         }
 405 }
 406
 407 our $hash_parent_base = $cgi->param('hpb');
 408 if (defined $hash_parent_base) {
 409         if (!validate_refname($hash_parent_base)) {
 410                 die_error(undef, "Invalid hash parent base parameter");
 411         }
 412 }
 413
 414 # other parameters
 415 our $page = $cgi->param('pg');
 416 if (defined $page) {
 417         if ($page =~ m/[^0-9]/) {
 418                 die_error(undef, "Invalid page parameter");
 419         }
 420 }
 421
 422 our $searchtype = $cgi->param('st');
 423 if (defined $searchtype) {
 424         if ($searchtype =~ m/[^a-z]/) {
 425                 die_error(undef, "Invalid searchtype parameter");
 426         }
 427 }
 428
 429 our $searchtext = $cgi->param('s');
 430 our $search_regexp;
 431 if (defined $searchtext) {
 432         if ($searchtype ne 'grep' and $searchtype ne 'pickaxe' and $searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 433                 die_error(undef, "Invalid search parameter");
 434         }
 435         if (length($searchtext) < 2) {
 436                 die_error(undef, "At least two characters are required for search parameter");
 437         }
 438         $search_regexp = quotemeta $searchtext;
 439 }
 440
 441 # now read PATH_INFO and use it as alternative to parameters
 442 sub evaluate_path_info {
 443         return if defined $project;
 444         my $path_info = $ENV{"PATH_INFO"};
 445         return if !$path_info;
 446         $path_info =~ s,^/+,,;
 447         return if !$path_info;
 448         # find which part of PATH_INFO is project
 449         $project = $path_info;
 450         $project =~ s,/+$,,;
 451         while ($project && !check_head_link("$projectroot/$project")) {
 452                 $project =~ s,/*[^/]*$,,;
 453         }
 454         # validate project
 455         $project = validate_pathname($project);
 456         if (!$project ||
 457             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 458             ($strict_export && !project_in_list($project))) {
 459                 undef $project;
 460                 return;
 461         }
 462         # do not change any parameters if an action is given using the query string
 463         return if $action;
 464         $path_info =~ s,^$project/*,,;
 465         my ($refname, $pathname) = split(/:/, $path_info, 2);
 466         if (defined $pathname) {
 467                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 468                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 469                 $pathname =~ s,^/+,,;
 470                 if (!$pathname || substr($pathname, -1) eq "/") {
 471                         $action  ||= "tree";
 472                         $pathname =~ s,/$,,;
 473                 } else {
 474                         $action  ||= "blob_plain";
 475                 }
 476                 $hash_base ||= validate_refname($refname);
 477                 $file_name ||= validate_pathname($pathname);
 478         } elsif (defined $refname) {
 479                 # we got "project.git/branch"
 480                 $action ||= "shortlog";
 481                 $hash   ||= validate_refname($refname);
 482         }
 483 }
 484 evaluate_path_info();
 485
 486 # path to the current git repository
 487 our $git_dir;
 488 $git_dir = "$projectroot/$project" if $project;
 489
 490 # dispatch
 491 my %actions = (
 492         "blame" => \&git_blame2,
 493         "blobdiff" => \&git_blobdiff,
 494         "blobdiff_plain" => \&git_blobdiff_plain,
 495         "blob" => \&git_blob,
 496         "blob_plain" => \&git_blob_plain,
 497         "commitdiff" => \&git_commitdiff,
 498         "commitdiff_plain" => \&git_commitdiff_plain,
 499         "commit" => \&git_commit,
 500         "forks" => \&git_forks,
 501         "heads" => \&git_heads,
 502         "history" => \&git_history,
 503         "log" => \&git_log,
 504         "rss" => \&git_rss,
 505         "atom" => \&git_atom,
 506         "search" => \&git_search,
 507         "search_help" => \&git_search_help,
 508         "shortlog" => \&git_shortlog,
 509         "summary" => \&git_summary,
 510         "tag" => \&git_tag,
 511         "tags" => \&git_tags,
 512         "tree" => \&git_tree,
 513         "snapshot" => \&git_snapshot,
 514         "object" => \&git_object,
 515         # those below don't need $project
 516         "opml" => \&git_opml,
 517         "project_list" => \&git_project_list,
 518         "project_index" => \&git_project_index,
 519 );
 520
 521 if (!defined $action) {
 522         if (defined $hash) {
 523                 $action = git_get_type($hash);
 524         } elsif (defined $hash_base && defined $file_name) {
 525                 $action = git_get_type("$hash_base:$file_name");
 526         } elsif (defined $project) {
 527                 $action = 'summary';
 528         } else {
 529                 $action = 'project_list';
 530         }
 531 }
 532 if (!defined($actions{$action})) {
 533         die_error(undef, "Unknown action");
 534 }
 535 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 536     !$project) {
 537         die_error(undef, "Project needed");
 538 }
 539 $actions{$action}->();
 540 exit;
 541
 542 ## ======================================================================
 543 ## action links
 544
 545 sub href(%) {
 546         my %params = @_;
 547         # default is to use -absolute url() i.e. $my_uri
 548         my $href = $params{-full} ? $my_url : $my_uri;
 549
 550         # XXX: Warning: If you touch this, check the search form for updating,
 551         # too.
 552
 553         my @mapping = (
 554                 project => "p",
 555                 action => "a",
 556                 file_name => "f",
 557                 file_parent => "fp",
 558                 extra_options => "opt",
 559                 hash => "h",
 560                 hash_parent => "hp",
 561                 hash_base => "hb",
 562                 hash_parent_base => "hpb",
 563                 page => "pg",
 564                 order => "o",
 565                 searchtext => "s",
 566                 searchtype => "st",
 567         );
 568         my %mapping = @mapping;
 569
 570         $params{'project'} = $project unless exists $params{'project'};
 571
 572         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 573         if ($use_pathinfo) {
 574                 # use PATH_INFO for project name
 575                 $href .= "/$params{'project'}" if defined $params{'project'};
 576                 delete $params{'project'};
 577
 578                 # Summary just uses the project path URL
 579                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 580                         delete $params{'action'};
 581                 }
 582         }
 583
 584         # now encode the parameters explicitly
 585         my @result = ();
 586         for (my $i = 0; $i < @mapping; $i += 2) {
 587                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 588                 if (defined $params{$name}) {
 589                         push @result, $symbol . "=" . esc_param($params{$name});
 590                 }
 591         }
 592         $href .= "?" . join(';', @result) if scalar @result;
 593
 594         return $href;
 595 }
 596
 597
 598 ## ======================================================================
 599 ## validation, quoting/unquoting and escaping
 600
 601 sub validate_pathname {
 602         my $input = shift || return undef;
 603
 604         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 605         # at the beginning, at the end, and between slashes.
 606         # also this catches doubled slashes
 607         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 608                 return undef;
 609         }
 610         # no null characters
 611         if ($input =~ m!\0!) {
 612                 return undef;
 613         }
 614         return $input;
 615 }
 616
 617 sub validate_refname {
 618         my $input = shift || return undef;
 619
 620         # textual hashes are O.K.
 621         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 622                 return $input;
 623         }
 624         # it must be correct pathname
 625         $input = validate_pathname($input)
 626                 or return undef;
 627         # restrictions on ref name according to git-check-ref-format
 628         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 629                 return undef;
 630         }
 631         return $input;
 632 }
 633
 634 # decode sequences of octets in utf8 into Perl's internal form,
 635 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 636 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 637 sub to_utf8 {
 638         my $str = shift;
 639         my $res;
 640         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 641         if (defined $res) {
 642                 return $res;
 643         } else {
 644                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 645         }
 646 }
 647
 648 # quote unsafe chars, but keep the slash, even when it's not
 649 # correct, but quoted slashes look too horrible in bookmarks
 650 sub esc_param {
 651         my $str = shift;
 652         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 653         $str =~ s/\+/%2B/g;
 654         $str =~ s/ /\+/g;
 655         return $str;
 656 }
 657
 658 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 659 sub esc_url {
 660         my $str = shift;
 661         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 662         $str =~ s/\+/%2B/g;
 663         $str =~ s/ /\+/g;
 664         return $str;
 665 }
 666
 667 # replace invalid utf8 character with SUBSTITUTION sequence
 668 sub esc_html ($;%) {
 669         my $str = shift;
 670         my %opts = @_;
 671
 672         $str = to_utf8($str);
 673         $str = $cgi->escapeHTML($str);
 674         if ($opts{'-nbsp'}) {
 675                 $str =~ s/ /&nbsp;/g;
 676         }
 677         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 678         return $str;
 679 }
 680
 681 # quote control characters and escape filename to HTML
 682 sub esc_path {
 683         my $str = shift;
 684         my %opts = @_;
 685
 686         $str = to_utf8($str);
 687         $str = $cgi->escapeHTML($str);
 688         if ($opts{'-nbsp'}) {
 689                 $str =~ s/ /&nbsp;/g;
 690         }
 691         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 692         return $str;
 693 }
 694
 695 # Make control characters "printable", using character escape codes (CEC)
 696 sub quot_cec {
 697         my $cntrl = shift;
 698         my %es = ( # character escape codes, aka escape sequences
 699                    "\t" => '\t',   # tab            (HT)
 700                    "\n" => '\n',   # line feed      (LF)
 701                    "\r" => '\r',   # carrige return (CR)
 702                    "\f" => '\f',   # form feed      (FF)
 703                    "\b" => '\b',   # backspace      (BS)
 704                    "\a" => '\a',   # alarm (bell)   (BEL)
 705                    "\e" => '\e',   # escape         (ESC)
 706                    "\013" => '\v', # vertical tab   (VT)
 707                    "\000" => '\0', # nul character  (NUL)
 708                    );
 709         my $chr = ( (exists $es{$cntrl})
 710                     ? $es{$cntrl}
 711                     : sprintf('\%03o', ord($cntrl)) );
 712         return "<span class=\"cntrl\">$chr</span>";
 713 }
 714
 715 # Alternatively use unicode control pictures codepoints,
 716 # Unicode "printable representation" (PR)
 717 sub quot_upr {
 718         my $cntrl = shift;
 719         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 720         return "<span class=\"cntrl\">$chr</span>";
 721 }
 722
 723 # git may return quoted and escaped filenames
 724 sub unquote {
 725         my $str = shift;
 726
 727         sub unq {
 728                 my $seq = shift;
 729                 my %es = ( # character escape codes, aka escape sequences
 730                         't' => "\t",   # tab            (HT, TAB)
 731                         'n' => "\n",   # newline        (NL)
 732                         'r' => "\r",   # return         (CR)
 733                         'f' => "\f",   # form feed      (FF)
 734                         'b' => "\b",   # backspace      (BS)
 735                         'a' => "\a",   # alarm (bell)   (BEL)
 736                         'e' => "\e",   # escape         (ESC)
 737                         'v' => "\013", # vertical tab   (VT)
 738                 );
 739
 740                 if ($seq =~ m/^[0-7]{1,3}$/) {
 741                         # octal char sequence
 742                         return chr(oct($seq));
 743                 } elsif (exists $es{$seq}) {
 744                         # C escape sequence, aka character escape code
 745                         return $es{$seq}
 746                 }
 747                 # quoted ordinary character
 748                 return $seq;
 749         }
 750
 751         if ($str =~ m/^"(.*)"$/) {
 752                 # needs unquoting
 753                 $str = $1;
 754                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 755         }
 756         return $str;
 757 }
 758
 759 # escape tabs (convert tabs to spaces)
 760 sub untabify {
 761         my $line = shift;
 762
 763         while ((my $pos = index($line, "\t")) != -1) {
 764                 if (my $count = (8 - ($pos % 8))) {
 765                         my $spaces = ' ' x $count;
 766                         $line =~ s/\t/$spaces/;
 767                 }
 768         }
 769
 770         return $line;
 771 }
 772
 773 sub project_in_list {
 774         my $project = shift;
 775         my @list = git_get_projects_list();
 776         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 777 }
 778
 779 ## ----------------------------------------------------------------------
 780 ## HTML aware string manipulation
 781
 782 sub chop_str {
 783         my $str = shift;
 784         my $len = shift;
 785         my $add_len = shift || 10;
 786
 787         # allow only $len chars, but don't cut a word if it would fit in $add_len
 788         # if it doesn't fit, cut it if it's still longer than the dots we would add
 789         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 790         my $body = $1;
 791         my $tail = $2;
 792         if (length($tail) > 4) {
 793                 $tail = " ...";
 794                 $body =~ s/&[^;]*$//; # remove chopped character entities
 795         }
 796         return "$body$tail";
 797 }
 798
 799 ## ----------------------------------------------------------------------
 800 ## functions returning short strings
 801
 802 # CSS class for given age value (in seconds)
 803 sub age_class {
 804         my $age = shift;
 805
 806         if (!defined $age) {
 807                 return "noage";
 808         } elsif ($age < 60*60*2) {
 809                 return "age0";
 810         } elsif ($age < 60*60*24*2) {
 811                 return "age1";
 812         } else {
 813                 return "age2";
 814         }
 815 }
 816
 817 # convert age in seconds to "nn units ago" string
 818 sub age_string {
 819         my $age = shift;
 820         my $age_str;
 821
 822         if ($age > 60*60*24*365*2) {
 823                 $age_str = (int $age/60/60/24/365);
 824                 $age_str .= " years ago";
 825         } elsif ($age > 60*60*24*(365/12)*2) {
 826                 $age_str = int $age/60/60/24/(365/12);
 827                 $age_str .= " months ago";
 828         } elsif ($age > 60*60*24*7*2) {
 829                 $age_str = int $age/60/60/24/7;
 830                 $age_str .= " weeks ago";
 831         } elsif ($age > 60*60*24*2) {
 832                 $age_str = int $age/60/60/24;
 833                 $age_str .= " days ago";
 834         } elsif ($age > 60*60*2) {
 835                 $age_str = int $age/60/60;
 836                 $age_str .= " hours ago";
 837         } elsif ($age > 60*2) {
 838                 $age_str = int $age/60;
 839                 $age_str .= " min ago";
 840         } elsif ($age > 2) {
 841                 $age_str = int $age;
 842                 $age_str .= " sec ago";
 843         } else {
 844                 $age_str .= " right now";
 845         }
 846         return $age_str;
 847 }
 848
 849 # convert file mode in octal to symbolic file mode string
 850 sub mode_str {
 851         my $mode = oct shift;
 852
 853         if (S_ISDIR($mode & S_IFMT)) {
 854                 return 'drwxr-xr-x';
 855         } elsif (S_ISLNK($mode)) {
 856                 return 'lrwxrwxrwx';
 857         } elsif (S_ISREG($mode)) {
 858                 # git cares only about the executable bit
 859                 if ($mode & S_IXUSR) {
 860                         return '-rwxr-xr-x';
 861                 } else {
 862                         return '-rw-r--r--';
 863                 };
 864         } else {
 865                 return '----------';
 866         }
 867 }
 868
 869 # convert file mode in octal to file type string
 870 sub file_type {
 871         my $mode = shift;
 872
 873         if ($mode !~ m/^[0-7]+$/) {
 874                 return $mode;
 875         } else {
 876                 $mode = oct $mode;
 877         }
 878
 879         if (S_ISDIR($mode & S_IFMT)) {
 880                 return "directory";
 881         } elsif (S_ISLNK($mode)) {
 882                 return "symlink";
 883         } elsif (S_ISREG($mode)) {
 884                 return "file";
 885         } else {
 886                 return "unknown";
 887         }
 888 }
 889
 890 # convert file mode in octal to file type description string
 891 sub file_type_long {
 892         my $mode = shift;
 893
 894         if ($mode !~ m/^[0-7]+$/) {
 895                 return $mode;
 896         } else {
 897                 $mode = oct $mode;
 898         }
 899
 900         if (S_ISDIR($mode & S_IFMT)) {
 901                 return "directory";
 902         } elsif (S_ISLNK($mode)) {
 903                 return "symlink";
 904         } elsif (S_ISREG($mode)) {
 905                 if ($mode & S_IXUSR) {
 906                         return "executable";
 907                 } else {
 908                         return "file";
 909                 };
 910         } else {
 911                 return "unknown";
 912         }
 913 }
 914
 915
 916 ## ----------------------------------------------------------------------
 917 ## functions returning short HTML fragments, or transforming HTML fragments
 918 ## which don't belong to other sections
 919
 920 # format line of commit message.
 921 sub format_log_line_html {
 922         my $line = shift;
 923
 924         $line = esc_html($line, -nbsp=>1);
 925         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 926                 my $hash_text = $1;
 927                 my $link =
 928                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 929                                 -class => "text"}, $hash_text);
 930                 $line =~ s/$hash_text/$link/;
 931         }
 932         return $line;
 933 }
 934
 935 # format marker of refs pointing to given object
 936 sub format_ref_marker {
 937         my ($refs, $id) = @_;
 938         my $markers = '';
 939
 940         if (defined $refs->{$id}) {
 941                 foreach my $ref (@{$refs->{$id}}) {
 942                         my ($type, $name) = qw();
 943                         # e.g. tags/v2.6.11 or heads/next
 944                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 945                                 $type = $1;
 946                                 $name = $2;
 947                         } else {
 948                                 $type = "ref";
 949                                 $name = $ref;
 950                         }
 951
 952                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 953                                     esc_html($name) . "</span>";
 954                 }
 955         }
 956
 957         if ($markers) {
 958                 return ' <span class="refs">'. $markers . '</span>';
 959         } else {
 960                 return "";
 961         }
 962 }
 963
 964 # format, perhaps shortened and with markers, title line
 965 sub format_subject_html {
 966         my ($long, $short, $href, $extra) = @_;
 967         $extra = '' unless defined($extra);
 968
 969         if (length($short) < length($long)) {
 970                 return $cgi->a({-href => $href, -class => "list subject",
 971                                 -title => to_utf8($long)},
 972                        esc_html($short) . $extra);
 973         } else {
 974                 return $cgi->a({-href => $href, -class => "list subject"},
 975                        esc_html($long)  . $extra);
 976         }
 977 }
 978
 979 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
 980 sub format_git_diff_header_line {
 981         my $line = shift;
 982         my $diffinfo = shift;
 983         my ($from, $to) = @_;
 984
 985         if ($diffinfo->{'nparents'}) {
 986                 # combined diff
 987                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
 988                 if ($to->{'href'}) {
 989                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
 990                                          esc_path($to->{'file'}));
 991                 } else { # file was deleted (no href)
 992                         $line .= esc_path($to->{'file'});
 993                 }
 994         } else {
 995                 # "ordinary" diff
 996                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
 997                 if ($from->{'href'}) {
 998                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
 999                                          'a/' . esc_path($from->{'file'}));
1000                 } else { # file was added (no href)
1001                         $line .= 'a/' . esc_path($from->{'file'});
1002                 }
1003                 $line .= ' ';
1004                 if ($to->{'href'}) {
1005                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1006                                          'b/' . esc_path($to->{'file'}));
1007                 } else { # file was deleted
1008                         $line .= 'b/' . esc_path($to->{'file'});
1009                 }
1010         }
1011
1012         return "<div class=\"diff header\">$line</div>\n";
1013 }
1014
1015 # format extended diff header line, before patch itself
1016 sub format_extended_diff_header_line {
1017         my $line = shift;
1018         my $diffinfo = shift;
1019         my ($from, $to) = @_;
1020
1021         # match <path>
1022         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1023                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1024                                        esc_path($from->{'file'}));
1025         }
1026         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1027                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1028                                  esc_path($to->{'file'}));
1029         }
1030         # match single <mode>
1031         if ($line =~ m/\s(\d{6})$/) {
1032                 $line .= '<span class="info"> (' .
1033                          file_type_long($1) .
1034                          ')</span>';
1035         }
1036         # match <hash>
1037         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1038                 # can match only for combined diff
1039                 $line = 'index ';
1040                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1041                         if ($from->{'href'}[$i]) {
1042                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1043                                                   -class=>"hash"},
1044                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1045                         } else {
1046                                 $line .= '0' x 7;
1047                         }
1048                         # separator
1049                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1050                 }
1051                 $line .= '..';
1052                 if ($to->{'href'}) {
1053                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1054                                          substr($diffinfo->{'to_id'},0,7));
1055                 } else {
1056                         $line .= '0' x 7;
1057                 }
1058
1059         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1060                 # can match only for ordinary diff
1061                 my ($from_link, $to_link);
1062                 if ($from->{'href'}) {
1063                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1064                                              substr($diffinfo->{'from_id'},0,7));
1065                 } else {
1066                         $from_link = '0' x 7;
1067                 }
1068                 if ($to->{'href'}) {
1069                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1070                                            substr($diffinfo->{'to_id'},0,7));
1071                 } else {
1072                         $to_link = '0' x 7;
1073                 }
1074                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1075                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1076         }
1077
1078         return $line . "<br/>\n";
1079 }
1080
1081 # format from-file/to-file diff header
1082 sub format_diff_from_to_header {
1083         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1084         my $line;
1085         my $result = '';
1086
1087         $line = $from_line;
1088         #assert($line =~ m/^---/) if DEBUG;
1089         # no extra formatting for "^--- /dev/null"
1090         if (! $diffinfo->{'nparents'}) {
1091                 # ordinary (single parent) diff
1092                 if ($line =~ m!^--- "?a/!) {
1093                         if ($from->{'href'}) {
1094                                 $line = '--- a/' .
1095                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1096                                                 esc_path($from->{'file'}));
1097                         } else {
1098                                 $line = '--- a/' .
1099                                         esc_path($from->{'file'});
1100                         }
1101                 }
1102                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1103
1104         } else {
1105                 # combined diff (merge commit)
1106                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1107                         if ($from->{'href'}[$i]) {
1108                                 $line = '--- ' .
1109                                         $cgi->a({-href=>href(action=>"blobdiff",
1110                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1111                                                              hash_parent_base=>$parents[$i],
1112                                                              file_parent=>$from->{'file'}[$i],
1113                                                              hash=>$diffinfo->{'to_id'},
1114                                                              hash_base=>$hash,
1115                                                              file_name=>$to->{'file'}),
1116                                                  -class=>"path",
1117                                                  -title=>"diff" . ($i+1)},
1118                                                 $i+1) .
1119                                         '/' .
1120                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1121                                                 esc_path($from->{'file'}[$i]));
1122                         } else {
1123                                 $line = '--- /dev/null';
1124                         }
1125                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1126                 }
1127         }
1128
1129         $line = $to_line;
1130         #assert($line =~ m/^\+\+\+/) if DEBUG;
1131         # no extra formatting for "^+++ /dev/null"
1132         if ($line =~ m!^\+\+\+ "?b/!) {
1133                 if ($to->{'href'}) {
1134                         $line = '+++ b/' .
1135                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1136                                         esc_path($to->{'file'}));
1137                 } else {
1138                         $line = '+++ b/' .
1139                                 esc_path($to->{'file'});
1140                 }
1141         }
1142         $result .= qq!<div class="diff to_file">$line</div>\n!;
1143
1144         return $result;
1145 }
1146
1147 # create note for patch simplified by combined diff
1148 sub format_diff_cc_simplified {
1149         my ($diffinfo, @parents) = @_;
1150         my $result = '';
1151
1152         $result .= "<div class=\"diff header\">" .
1153                    "diff --cc ";
1154         if (!is_deleted($diffinfo)) {
1155                 $result .= $cgi->a({-href => href(action=>"blob",
1156                                                   hash_base=>$hash,
1157                                                   hash=>$diffinfo->{'to_id'},
1158                                                   file_name=>$diffinfo->{'to_file'}),
1159                                     -class => "path"},
1160                                    esc_path($diffinfo->{'to_file'}));
1161         } else {
1162                 $result .= esc_path($diffinfo->{'to_file'});
1163         }
1164         $result .= "</div>\n" . # class="diff header"
1165                    "<div class=\"diff nodifferences\">" .
1166                    "Simple merge" .
1167                    "</div>\n"; # class="diff nodifferences"
1168
1169         return $result;
1170 }
1171
1172 # format patch (diff) line (not to be used for diff headers)
1173 sub format_diff_line {
1174         my $line = shift;
1175         my ($from, $to) = @_;
1176         my $diff_class = "";
1177
1178         chomp $line;
1179
1180         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1181                 # combined diff
1182                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1183                 if ($line =~ m/^\@{3}/) {
1184                         $diff_class = " chunk_header";
1185                 } elsif ($line =~ m/^\\/) {
1186                         $diff_class = " incomplete";
1187                 } elsif ($prefix =~ tr/+/+/) {
1188                         $diff_class = " add";
1189                 } elsif ($prefix =~ tr/-/-/) {
1190                         $diff_class = " rem";
1191                 }
1192         } else {
1193                 # assume ordinary diff
1194                 my $char = substr($line, 0, 1);
1195                 if ($char eq '+') {
1196                         $diff_class = " add";
1197                 } elsif ($char eq '-') {
1198                         $diff_class = " rem";
1199                 } elsif ($char eq '@') {
1200                         $diff_class = " chunk_header";
1201                 } elsif ($char eq "\\") {
1202                         $diff_class = " incomplete";
1203                 }
1204         }
1205         $line = untabify($line);
1206         if ($from && $to && $line =~ m/^\@{2} /) {
1207                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1208                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1209
1210                 $from_lines = 0 unless defined $from_lines;
1211                 $to_lines   = 0 unless defined $to_lines;
1212
1213                 if ($from->{'href'}) {
1214                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1215                                              -class=>"list"}, $from_text);
1216                 }
1217                 if ($to->{'href'}) {
1218                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1219                                              -class=>"list"}, $to_text);
1220                 }
1221                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1222                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1223                 return "<div class=\"diff$diff_class\">$line</div>\n";
1224         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1225                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1226                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1227
1228                 @from_text = split(' ', $ranges);
1229                 for (my $i = 0; $i < @from_text; ++$i) {
1230                         ($from_start[$i], $from_nlines[$i]) =
1231                                 (split(',', substr($from_text[$i], 1)), 0);
1232                 }
1233
1234                 $to_text   = pop @from_text;
1235                 $to_start  = pop @from_start;
1236                 $to_nlines = pop @from_nlines;
1237
1238                 $line = "<span class=\"chunk_info\">$prefix ";
1239                 for (my $i = 0; $i < @from_text; ++$i) {
1240                         if ($from->{'href'}[$i]) {
1241                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1242                                                   -class=>"list"}, $from_text[$i]);
1243                         } else {
1244                                 $line .= $from_text[$i];
1245                         }
1246                         $line .= " ";
1247                 }
1248                 if ($to->{'href'}) {
1249                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1250                                           -class=>"list"}, $to_text);
1251                 } else {
1252                         $line .= $to_text;
1253                 }
1254                 $line .= " $prefix</span>" .
1255                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1256                 return "<div class=\"diff$diff_class\">$line</div>\n";
1257         }
1258         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1259 }
1260
1261 ## ----------------------------------------------------------------------
1262 ## git utility subroutines, invoking git commands
1263
1264 # returns path to the core git executable and the --git-dir parameter as list
1265 sub git_cmd {
1266         return $GIT, '--git-dir='.$git_dir;
1267 }
1268
1269 # returns path to the core git executable and the --git-dir parameter as string
1270 sub git_cmd_str {
1271         return join(' ', git_cmd());
1272 }
1273
1274 # get HEAD ref of given project as hash
1275 sub git_get_head_hash {
1276         my $project = shift;
1277         my $o_git_dir = $git_dir;
1278         my $retval = undef;
1279         $git_dir = "$projectroot/$project";
1280         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1281                 my $head = <$fd>;
1282                 close $fd;
1283                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1284                         $retval = $1;
1285                 }
1286         }
1287         if (defined $o_git_dir) {
1288                 $git_dir = $o_git_dir;
1289         }
1290         return $retval;
1291 }
1292
1293 # get type of given object
1294 sub git_get_type {
1295         my $hash = shift;
1296
1297         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1298         my $type = <$fd>;
1299         close $fd or return;
1300         chomp $type;
1301         return $type;
1302 }
1303
1304 sub git_get_project_config {
1305         my ($key, $type) = @_;
1306
1307         return unless ($key);
1308         $key =~ s/^gitweb\.//;
1309         return if ($key =~ m/\W/);
1310
1311         my @x = (git_cmd(), 'config');
1312         if (defined $type) { push @x, $type; }
1313         push @x, "--get";
1314         push @x, "gitweb.$key";
1315         my $val = qx(@x);
1316         chomp $val;
1317         return ($val);
1318 }
1319
1320 # get hash of given path at given ref
1321 sub git_get_hash_by_path {
1322         my $base = shift;
1323         my $path = shift || return undef;
1324         my $type = shift;
1325
1326         $path =~ s,/+$,,;
1327
1328         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1329                 or die_error(undef, "Open git-ls-tree failed");
1330         my $line = <$fd>;
1331         close $fd or return undef;
1332
1333         if (!defined $line) {
1334                 # there is no tree or hash given by $path at $base
1335                 return undef;
1336         }
1337
1338         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1339         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1340         if (defined $type && $type ne $2) {
1341                 # type doesn't match
1342                 return undef;
1343         }
1344         return $3;
1345 }
1346
1347 # get path of entry with given hash at given tree-ish (ref)
1348 # used to get 'from' filename for combined diff (merge commit) for renames
1349 sub git_get_path_by_hash {
1350         my $base = shift || return;
1351         my $hash = shift || return;
1352
1353         local $/ = "\0";
1354
1355         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1356                 or return undef;
1357         while (my $line = <$fd>) {
1358                 chomp $line;
1359
1360                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1361                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1362                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1363                         close $fd;
1364                         return $1;
1365                 }
1366         }
1367         close $fd;
1368         return undef;
1369 }
1370
1371 ## ......................................................................
1372 ## git utility functions, directly accessing git repository
1373
1374 sub git_get_project_description {
1375         my $path = shift;
1376
1377         open my $fd, "$projectroot/$path/description" or return undef;
1378         my $descr = <$fd>;
1379         close $fd;
1380         if (defined $descr) {
1381                 chomp $descr;
1382         }
1383         return $descr;
1384 }
1385
1386 sub git_get_project_url_list {
1387         my $path = shift;
1388
1389         open my $fd, "$projectroot/$path/cloneurl" or return;
1390         my @git_project_url_list = map { chomp; $_ } <$fd>;
1391         close $fd;
1392
1393         return wantarray ? @git_project_url_list : \@git_project_url_list;
1394 }
1395
1396 sub git_get_projects_list {
1397         my ($filter) = @_;
1398         my @list;
1399
1400         $filter ||= '';
1401         $filter =~ s/\.git$//;
1402
1403         my ($check_forks) = gitweb_check_feature('forks');
1404
1405         if (-d $projects_list) {
1406                 # search in directory
1407                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1408                 # remove the trailing "/"
1409                 $dir =~ s!/+$!!;
1410                 my $pfxlen = length("$dir");
1411
1412                 File::Find::find({
1413                         follow_fast => 1, # follow symbolic links
1414                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1415                         wanted => sub {
1416                                 # skip project-list toplevel, if we get it.
1417                                 return if (m!^[/.]$!);
1418                                 # only directories can be git repositories
1419                                 return unless (-d $_);
1420
1421                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1422                                 # we check related file in $projectroot
1423                                 if ($check_forks and $subdir =~ m#/.#) {
1424                                         $File::Find::prune = 1;
1425                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1426                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1427                                         $File::Find::prune = 1;
1428                                 }
1429                         },
1430                 }, "$dir");
1431
1432         } elsif (-f $projects_list) {
1433                 # read from file(url-encoded):
1434                 # 'git%2Fgit.git Linus+Torvalds'
1435                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1436                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1437                 my %paths;
1438                 open my ($fd), $projects_list or return;
1439         PROJECT:
1440                 while (my $line = <$fd>) {
1441                         chomp $line;
1442                         my ($path, $owner) = split ' ', $line;
1443                         $path = unescape($path);
1444                         $owner = unescape($owner);
1445                         if (!defined $path) {
1446                                 next;
1447                         }
1448                         if ($filter ne '') {
1449                                 # looking for forks;
1450                                 my $pfx = substr($path, 0, length($filter));
1451                                 if ($pfx ne $filter) {
1452                                         next PROJECT;
1453                                 }
1454                                 my $sfx = substr($path, length($filter));
1455                                 if ($sfx !~ /^\/.*\.git$/) {
1456                                         next PROJECT;
1457                                 }
1458                         } elsif ($check_forks) {
1459                         PATH:
1460                                 foreach my $filter (keys %paths) {
1461                                         # looking for forks;
1462                                         my $pfx = substr($path, 0, length($filter));
1463                                         if ($pfx ne $filter) {
1464                                                 next PATH;
1465                                         }
1466                                         my $sfx = substr($path, length($filter));
1467                                         if ($sfx !~ /^\/.*\.git$/) {
1468                                                 next PATH;
1469                                         }
1470                                         # is a fork, don't include it in
1471                                         # the list
1472                                         next PROJECT;
1473                                 }
1474                         }
1475                         if (check_export_ok("$projectroot/$path")) {
1476                                 my $pr = {
1477                                         path => $path,
1478                                         owner => to_utf8($owner),
1479                                 };
1480                                 push @list, $pr;
1481                                 (my $forks_path = $path) =~ s/\.git$//;
1482                                 $paths{$forks_path}++;
1483                         }
1484                 }
1485                 close $fd;
1486         }
1487         return @list;
1488 }
1489
1490 our $gitweb_project_owner = undef;
1491 sub git_get_project_list_from_file {
1492
1493         return if (defined $gitweb_project_owner);
1494
1495         $gitweb_project_owner = {};
1496         # read from file (url-encoded):
1497         # 'git%2Fgit.git Linus+Torvalds'
1498         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1499         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1500         if (-f $projects_list) {
1501                 open (my $fd , $projects_list);
1502                 while (my $line = <$fd>) {
1503                         chomp $line;
1504                         my ($pr, $ow) = split ' ', $line;
1505                         $pr = unescape($pr);
1506                         $ow = unescape($ow);
1507                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1508                 }
1509                 close $fd;
1510         }
1511 }
1512
1513 sub git_get_project_owner {
1514         my $project = shift;
1515         my $owner;
1516
1517         return undef unless $project;
1518
1519         if (!defined $gitweb_project_owner) {
1520                 git_get_project_list_from_file();
1521         }
1522
1523         if (exists $gitweb_project_owner->{$project}) {
1524                 $owner = $gitweb_project_owner->{$project};
1525         }
1526         if (!defined $owner) {
1527                 $owner = get_file_owner("$projectroot/$project");
1528         }
1529
1530         return $owner;
1531 }
1532
1533 sub git_get_last_activity {
1534         my ($path) = @_;
1535         my $fd;
1536
1537         $git_dir = "$projectroot/$path";
1538         open($fd, "-|", git_cmd(), 'for-each-ref',
1539              '--format=%(committer)',
1540              '--sort=-committerdate',
1541              '--count=1',
1542              'refs/heads') or return;
1543         my $most_recent = <$fd>;
1544         close $fd or return;
1545         if (defined $most_recent &&
1546             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1547                 my $timestamp = $1;
1548                 my $age = time - $timestamp;
1549                 return ($age, age_string($age));
1550         }
1551         return (undef, undef);
1552 }
1553
1554 sub git_get_references {
1555         my $type = shift || "";
1556         my %refs;
1557         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1558         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1559         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1560                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1561                 or return;
1562
1563         while (my $line = <$fd>) {
1564                 chomp $line;
1565                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1566                         if (defined $refs{$1}) {
1567                                 push @{$refs{$1}}, $2;
1568                         } else {
1569                                 $refs{$1} = [ $2 ];
1570                         }
1571                 }
1572         }
1573         close $fd or return;
1574         return \%refs;
1575 }
1576
1577 sub git_get_rev_name_tags {
1578         my $hash = shift || return undef;
1579
1580         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1581                 or return;
1582         my $name_rev = <$fd>;
1583         close $fd;
1584
1585         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1586                 return $1;
1587         } else {
1588                 # catches also '$hash undefined' output
1589                 return undef;
1590         }
1591 }
1592
1593 ## ----------------------------------------------------------------------
1594 ## parse to hash functions
1595
1596 sub parse_date {
1597         my $epoch = shift;
1598         my $tz = shift || "-0000";
1599
1600         my %date;
1601         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1602         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1603         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1604         $date{'hour'} = $hour;
1605         $date{'minute'} = $min;
1606         $date{'mday'} = $mday;
1607         $date{'day'} = $days[$wday];
1608         $date{'month'} = $months[$mon];
1609         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1610                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1611         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1612                              $mday, $months[$mon], $hour ,$min;
1613         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1614                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1615
1616         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1617         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1618         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1619         $date{'hour_local'} = $hour;
1620         $date{'minute_local'} = $min;
1621         $date{'tz_local'} = $tz;
1622         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1623                                   1900+$year, $mon+1, $mday,
1624                                   $hour, $min, $sec, $tz);
1625         return %date;
1626 }
1627
1628 sub parse_tag {
1629         my $tag_id = shift;
1630         my %tag;
1631         my @comment;
1632
1633         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1634         $tag{'id'} = $tag_id;
1635         while (my $line = <$fd>) {
1636                 chomp $line;
1637                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1638                         $tag{'object'} = $1;
1639                 } elsif ($line =~ m/^type (.+)$/) {
1640                         $tag{'type'} = $1;
1641                 } elsif ($line =~ m/^tag (.+)$/) {
1642                         $tag{'name'} = $1;
1643                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1644                         $tag{'author'} = $1;
1645                         $tag{'epoch'} = $2;
1646                         $tag{'tz'} = $3;
1647                 } elsif ($line =~ m/--BEGIN/) {
1648                         push @comment, $line;
1649                         last;
1650                 } elsif ($line eq "") {
1651                         last;
1652                 }
1653         }
1654         push @comment, <$fd>;
1655         $tag{'comment'} = \@comment;
1656         close $fd or return;
1657         if (!defined $tag{'name'}) {
1658                 return
1659         };
1660         return %tag
1661 }
1662
1663 sub parse_commit_text {
1664         my ($commit_text, $withparents) = @_;
1665         my @commit_lines = split '\n', $commit_text;
1666         my %co;
1667
1668         pop @commit_lines; # Remove '\0'
1669
1670         if (! @commit_lines) {
1671                 return;
1672         }
1673
1674         my $header = shift @commit_lines;
1675         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1676                 return;
1677         }
1678         ($co{'id'}, my @parents) = split ' ', $header;
1679         while (my $line = shift @commit_lines) {
1680                 last if $line eq "\n";
1681                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1682                         $co{'tree'} = $1;
1683                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1684                         push @parents, $1;
1685                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1686                         $co{'author'} = $1;
1687                         $co{'author_epoch'} = $2;
1688                         $co{'author_tz'} = $3;
1689                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1690                                 $co{'author_name'}  = $1;
1691                                 $co{'author_email'} = $2;
1692                         } else {
1693                                 $co{'author_name'} = $co{'author'};
1694                         }
1695                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1696                         $co{'committer'} = $1;
1697                         $co{'committer_epoch'} = $2;
1698                         $co{'committer_tz'} = $3;
1699                         $co{'committer_name'} = $co{'committer'};
1700                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1701                                 $co{'committer_name'}  = $1;
1702                                 $co{'committer_email'} = $2;
1703                         } else {
1704                                 $co{'committer_name'} = $co{'committer'};
1705                         }
1706                 }
1707         }
1708         if (!defined $co{'tree'}) {
1709                 return;
1710         };
1711         $co{'parents'} = \@parents;
1712         $co{'parent'} = $parents[0];
1713
1714         foreach my $title (@commit_lines) {
1715                 $title =~ s/^    //;
1716                 if ($title ne "") {
1717                         $co{'title'} = chop_str($title, 80, 5);
1718                         # remove leading stuff of merges to make the interesting part visible
1719                         if (length($title) > 50) {
1720                                 $title =~ s/^Automatic //;
1721                                 $title =~ s/^merge (of|with) /Merge ... /i;
1722                                 if (length($title) > 50) {
1723                                         $title =~ s/(http|rsync):\/\///;
1724                                 }
1725                                 if (length($title) > 50) {
1726                                         $title =~ s/(master|www|rsync)\.//;
1727                                 }
1728                                 if (length($title) > 50) {
1729                                         $title =~ s/kernel.org:?//;
1730                                 }
1731                                 if (length($title) > 50) {
1732                                         $title =~ s/\/pub\/scm//;
1733                                 }
1734                         }
1735                         $co{'title_short'} = chop_str($title, 50, 5);
1736                         last;
1737                 }
1738         }
1739         if ($co{'title'} eq "") {
1740                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1741         }
1742         # remove added spaces
1743         foreach my $line (@commit_lines) {
1744                 $line =~ s/^    //;
1745         }
1746         $co{'comment'} = \@commit_lines;
1747
1748         my $age = time - $co{'committer_epoch'};
1749         $co{'age'} = $age;
1750         $co{'age_string'} = age_string($age);
1751         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1752         if ($age > 60*60*24*7*2) {
1753                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1754                 $co{'age_string_age'} = $co{'age_string'};
1755         } else {
1756                 $co{'age_string_date'} = $co{'age_string'};
1757                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1758         }
1759         return %co;
1760 }
1761
1762 sub parse_commit {
1763         my ($commit_id) = @_;
1764         my %co;
1765
1766         local $/ = "\0";
1767
1768         open my $fd, "-|", git_cmd(), "rev-list",
1769                 "--parents",
1770                 "--header",
1771                 "--max-count=1",
1772                 $commit_id,
1773                 "--",
1774                 or die_error(undef, "Open git-rev-list failed");
1775         %co = parse_commit_text(<$fd>, 1);
1776         close $fd;
1777
1778         return %co;
1779 }
1780
1781 sub parse_commits {
1782         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1783         my @cos;
1784
1785         $maxcount ||= 1;
1786         $skip ||= 0;
1787
1788         local $/ = "\0";
1789
1790         open my $fd, "-|", git_cmd(), "rev-list",
1791                 "--header",
1792                 ($arg ? ($arg) : ()),
1793                 ("--max-count=" . $maxcount),
1794                 ("--skip=" . $skip),
1795                 @extra_options,
1796                 $commit_id,
1797                 "--",
1798                 ($filename ? ($filename) : ())
1799                 or die_error(undef, "Open git-rev-list failed");
1800         while (my $line = <$fd>) {
1801                 my %co = parse_commit_text($line);
1802                 push @cos, \%co;
1803         }
1804         close $fd;
1805
1806         return wantarray ? @cos : \@cos;
1807 }
1808
1809 # parse ref from ref_file, given by ref_id, with given type
1810 sub parse_ref {
1811         my $ref_file = shift;
1812         my $ref_id = shift;
1813         my $type = shift || git_get_type($ref_id);
1814         my %ref_item;
1815
1816         $ref_item{'type'} = $type;
1817         $ref_item{'id'} = $ref_id;
1818         $ref_item{'epoch'} = 0;
1819         $ref_item{'age'} = "unknown";
1820         if ($type eq "tag") {
1821                 my %tag = parse_tag($ref_id);
1822                 $ref_item{'comment'} = $tag{'comment'};
1823                 if ($tag{'type'} eq "commit") {
1824                         my %co = parse_commit($tag{'object'});
1825                         $ref_item{'epoch'} = $co{'committer_epoch'};
1826                         $ref_item{'age'} = $co{'age_string'};
1827                 } elsif (defined($tag{'epoch'})) {
1828                         my $age = time - $tag{'epoch'};
1829                         $ref_item{'epoch'} = $tag{'epoch'};
1830                         $ref_item{'age'} = age_string($age);
1831                 }
1832                 $ref_item{'reftype'} = $tag{'type'};
1833                 $ref_item{'name'} = $tag{'name'};
1834                 $ref_item{'refid'} = $tag{'object'};
1835         } elsif ($type eq "commit"){
1836                 my %co = parse_commit($ref_id);
1837                 $ref_item{'reftype'} = "commit";
1838                 $ref_item{'name'} = $ref_file;
1839                 $ref_item{'title'} = $co{'title'};
1840                 $ref_item{'refid'} = $ref_id;
1841                 $ref_item{'epoch'} = $co{'committer_epoch'};
1842                 $ref_item{'age'} = $co{'age_string'};
1843         } else {
1844                 $ref_item{'reftype'} = $type;
1845                 $ref_item{'name'} = $ref_file;
1846                 $ref_item{'refid'} = $ref_id;
1847         }
1848
1849         return %ref_item;
1850 }
1851
1852 # parse line of git-diff-tree "raw" output
1853 sub parse_difftree_raw_line {
1854         my $line = shift;
1855         my %res;
1856
1857         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1858         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1859         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1860                 $res{'from_mode'} = $1;
1861                 $res{'to_mode'} = $2;
1862                 $res{'from_id'} = $3;
1863                 $res{'to_id'} = $4;
1864                 $res{'status'} = $5;
1865                 $res{'similarity'} = $6;
1866                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1867                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1868                 } else {
1869                         $res{'file'} = unquote($7);
1870                 }
1871         }
1872         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1873         # combined diff (for merge commit)
1874         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1875                 $res{'nparents'}  = length($1);
1876                 $res{'from_mode'} = [ split(' ', $2) ];
1877                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1878                 $res{'from_id'} = [ split(' ', $3) ];
1879                 $res{'to_id'} = pop @{$res{'from_id'}};
1880                 $res{'status'} = [ split('', $4) ];
1881                 $res{'to_file'} = unquote($5);
1882         }
1883         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1884         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1885                 $res{'commit'} = $1;
1886         }
1887
1888         return wantarray ? %res : \%res;
1889 }
1890
1891 # parse line of git-ls-tree output
1892 sub parse_ls_tree_line ($;%) {
1893         my $line = shift;
1894         my %opts = @_;
1895         my %res;
1896
1897         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1898         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1899
1900         $res{'mode'} = $1;
1901         $res{'type'} = $2;
1902         $res{'hash'} = $3;
1903         if ($opts{'-z'}) {
1904                 $res{'name'} = $4;
1905         } else {
1906                 $res{'name'} = unquote($4);
1907         }
1908
1909         return wantarray ? %res : \%res;
1910 }
1911
1912 # generates _two_ hashes, references to which are passed as 2 and 3 argument
1913 sub parse_from_to_diffinfo {
1914         my ($diffinfo, $from, $to, @parents) = @_;
1915
1916         if ($diffinfo->{'nparents'}) {
1917                 # combined diff
1918                 $from->{'file'} = [];
1919                 $from->{'href'} = [];
1920                 fill_from_file_info($diffinfo, @parents)
1921                         unless exists $diffinfo->{'from_file'};
1922                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1923                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
1924                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
1925                                 $from->{'href'}[$i] = href(action=>"blob",
1926                                                            hash_base=>$parents[$i],
1927                                                            hash=>$diffinfo->{'from_id'}[$i],
1928                                                            file_name=>$from->{'file'}[$i]);
1929                         } else {
1930                                 $from->{'href'}[$i] = undef;
1931                         }
1932                 }
1933         } else {
1934                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
1935                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
1936                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
1937                                                hash=>$diffinfo->{'from_id'},
1938                                                file_name=>$from->{'file'});
1939                 } else {
1940                         delete $from->{'href'};
1941                 }
1942         }
1943
1944         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
1945         if (!is_deleted($diffinfo)) { # file exists in result
1946                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
1947                                      hash=>$diffinfo->{'to_id'},
1948                                      file_name=>$to->{'file'});
1949         } else {
1950                 delete $to->{'href'};
1951         }
1952 }
1953
1954 ## ......................................................................
1955 ## parse to array of hashes functions
1956
1957 sub git_get_heads_list {
1958         my $limit = shift;
1959         my @headslist;
1960
1961         open my $fd, '-|', git_cmd(), 'for-each-ref',
1962                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1963                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1964                 'refs/heads'
1965                 or return;
1966         while (my $line = <$fd>) {
1967                 my %ref_item;
1968
1969                 chomp $line;
1970                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1971                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1972                 my ($committer, $epoch, $tz) =
1973                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1974                 $name =~ s!^refs/heads/!!;
1975
1976                 $ref_item{'name'}  = $name;
1977                 $ref_item{'id'}    = $hash;
1978                 $ref_item{'title'} = $title || '(no commit message)';
1979                 $ref_item{'epoch'} = $epoch;
1980                 if ($epoch) {
1981                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1982                 } else {
1983                         $ref_item{'age'} = "unknown";
1984                 }
1985
1986                 push @headslist, \%ref_item;
1987         }
1988         close $fd;
1989
1990         return wantarray ? @headslist : \@headslist;
1991 }
1992
1993 sub git_get_tags_list {
1994         my $limit = shift;
1995         my @tagslist;
1996
1997         open my $fd, '-|', git_cmd(), 'for-each-ref',
1998                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1999                 '--format=%(objectname) %(objecttype) %(refname) '.
2000                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2001                 'refs/tags'
2002                 or return;
2003         while (my $line = <$fd>) {
2004                 my %ref_item;
2005
2006                 chomp $line;
2007                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2008                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2009                 my ($creator, $epoch, $tz) =
2010                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2011                 $name =~ s!^refs/tags/!!;
2012
2013                 $ref_item{'type'} = $type;
2014                 $ref_item{'id'} = $id;
2015                 $ref_item{'name'} = $name;
2016                 if ($type eq "tag") {
2017                         $ref_item{'subject'} = $title;
2018                         $ref_item{'reftype'} = $reftype;
2019                         $ref_item{'refid'}   = $refid;
2020                 } else {
2021                         $ref_item{'reftype'} = $type;
2022                         $ref_item{'refid'}   = $id;
2023                 }
2024
2025                 if ($type eq "tag" || $type eq "commit") {
2026                         $ref_item{'epoch'} = $epoch;
2027                         if ($epoch) {
2028                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2029                         } else {
2030                                 $ref_item{'age'} = "unknown";
2031                         }
2032                 }
2033
2034                 push @tagslist, \%ref_item;
2035         }
2036         close $fd;
2037
2038         return wantarray ? @tagslist : \@tagslist;
2039 }
2040
2041 ## ----------------------------------------------------------------------
2042 ## filesystem-related functions
2043
2044 sub get_file_owner {
2045         my $path = shift;
2046
2047         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2048         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2049         if (!defined $gcos) {
2050                 return undef;
2051         }
2052         my $owner = $gcos;
2053         $owner =~ s/[,;].*$//;
2054         return to_utf8($owner);
2055 }
2056
2057 ## ......................................................................
2058 ## mimetype related functions
2059
2060 sub mimetype_guess_file {
2061         my $filename = shift;
2062         my $mimemap = shift;
2063         -r $mimemap or return undef;
2064
2065         my %mimemap;
2066         open(MIME, $mimemap) or return undef;
2067         while (<MIME>) {
2068                 next if m/^#/; # skip comments
2069                 my ($mime, $exts) = split(/\t+/);
2070                 if (defined $exts) {
2071                         my @exts = split(/\s+/, $exts);
2072                         foreach my $ext (@exts) {
2073                                 $mimemap{$ext} = $mime;
2074                         }
2075                 }
2076         }
2077         close(MIME);
2078
2079         $filename =~ /\.([^.]*)$/;
2080         return $mimemap{$1};
2081 }
2082
2083 sub mimetype_guess {
2084         my $filename = shift;
2085         my $mime;
2086         $filename =~ /\./ or return undef;
2087
2088         if ($mimetypes_file) {
2089                 my $file = $mimetypes_file;
2090                 if ($file !~ m!^/!) { # if it is relative path
2091                         # it is relative to project
2092                         $file = "$projectroot/$project/$file";
2093                 }
2094                 $mime = mimetype_guess_file($filename, $file);
2095         }
2096         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2097         return $mime;
2098 }
2099
2100 sub blob_mimetype {
2101         my $fd = shift;
2102         my $filename = shift;
2103
2104         if ($filename) {
2105                 my $mime = mimetype_guess($filename);
2106                 $mime and return $mime;
2107         }
2108
2109         # just in case
2110         return $default_blob_plain_mimetype unless $fd;
2111
2112         if (-T $fd) {
2113                 return 'text/plain' .
2114                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2115         } elsif (! $filename) {
2116                 return 'application/octet-stream';
2117         } elsif ($filename =~ m/\.png$/i) {
2118                 return 'image/png';
2119         } elsif ($filename =~ m/\.gif$/i) {
2120                 return 'image/gif';
2121         } elsif ($filename =~ m/\.jpe?g$/i) {
2122                 return 'image/jpeg';
2123         } else {
2124                 return 'application/octet-stream';
2125         }
2126 }
2127
2128 ## ======================================================================
2129 ## functions printing HTML: header, footer, error page
2130
2131 sub git_header_html {
2132         my $status = shift || "200 OK";
2133         my $expires = shift;
2134
2135         my $title = "$site_name";
2136         if (defined $project) {
2137                 $title .= " - " . to_utf8($project);
2138                 if (defined $action) {
2139                         $title .= "/$action";
2140                         if (defined $file_name) {
2141                                 $title .= " - " . esc_path($file_name);
2142                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2143                                         $title .= "/";
2144                                 }
2145                         }
2146                 }
2147         }
2148         my $content_type;
2149         # require explicit support from the UA if we are to send the page as
2150         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2151         # we have to do this because MSIE sometimes globs '*/*', pretending to
2152         # support xhtml+xml but choking when it gets what it asked for.
2153         if (defined $cgi->http('HTTP_ACCEPT') &&
2154             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2155             $cgi->Accept('application/xhtml+xml') != 0) {
2156                 $content_type = 'application/xhtml+xml';
2157         } else {
2158                 $content_type = 'text/html';
2159         }
2160         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2161                            -status=> $status, -expires => $expires);
2162         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2163         print <<EOF;
2164 <?xml version="1.0" encoding="utf-8"?>
2165 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2166 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2167 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2168 <!-- git core binaries version $git_version -->
2169 <head>
2170 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2171 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2172 <meta name="robots" content="index, nofollow"/>
2173 <title>$title</title>
2174 EOF
2175 # print out each stylesheet that exist
2176         if (defined $stylesheet) {
2177 #provides backwards capability for those people who define style sheet in a config file
2178                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2179         } else {
2180                 foreach my $stylesheet (@stylesheets) {
2181                         next unless $stylesheet;
2182                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2183                 }
2184         }
2185         if (defined $project) {
2186                 printf('<link rel="alternate" title="%s log RSS feed" '.
2187                        'href="%s" type="application/rss+xml" />'."\n",
2188                        esc_param($project), href(action=>"rss"));
2189                 printf('<link rel="alternate" title="%s log Atom feed" '.
2190                        'href="%s" type="application/atom+xml" />'."\n",
2191                        esc_param($project), href(action=>"atom"));
2192         } else {
2193                 printf('<link rel="alternate" title="%s projects list" '.
2194                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2195                        $site_name, href(project=>undef, action=>"project_index"));
2196                 printf('<link rel="alternate" title="%s projects feeds" '.
2197                        'href="%s" type="text/x-opml"/>'."\n",
2198                        $site_name, href(project=>undef, action=>"opml"));
2199         }
2200         if (defined $favicon) {
2201                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2202         }
2203
2204         print "</head>\n" .
2205               "<body>\n";
2206
2207         if (-f $site_header) {
2208                 open (my $fd, $site_header);
2209                 print <$fd>;
2210                 close $fd;
2211         }
2212
2213         print "<div class=\"page_header\">\n" .
2214               $cgi->a({-href => esc_url($logo_url),
2215                        -title => $logo_label},
2216                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2217         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2218         if (defined $project) {
2219                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2220                 if (defined $action) {
2221                         print " / $action";
2222                 }
2223                 print "\n";
2224         }
2225         print "</div>\n";
2226
2227         my ($have_search) = gitweb_check_feature('search');
2228         if ((defined $project) && ($have_search)) {
2229                 if (!defined $searchtext) {
2230                         $searchtext = "";
2231                 }
2232                 my $search_hash;
2233                 if (defined $hash_base) {
2234                         $search_hash = $hash_base;
2235                 } elsif (defined $hash) {
2236                         $search_hash = $hash;
2237                 } else {
2238                         $search_hash = "HEAD";
2239                 }
2240                 my $action = $my_uri;
2241                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2242                 if ($use_pathinfo) {
2243                         $action .= "/$project";
2244                 } else {
2245                         $cgi->param("p", $project);
2246                 }
2247                 $cgi->param("a", "search");
2248                 $cgi->param("h", $search_hash);
2249                 print $cgi->startform(-method => "get", -action => $action) .
2250                       "<div class=\"search\">\n" .
2251                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2252                       $cgi->hidden(-name => "a") . "\n" .
2253                       $cgi->hidden(-name => "h") . "\n" .
2254                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2255                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2256                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2257                       " search:\n",
2258                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2259                       "</div>" .
2260                       $cgi->end_form() . "\n";
2261         }
2262 }
2263
2264 sub git_footer_html {
2265         print "<div class=\"page_footer\">\n";
2266         if (defined $project) {
2267                 my $descr = git_get_project_description($project);
2268                 if (defined $descr) {
2269                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2270                 }
2271                 print $cgi->a({-href => href(action=>"rss"),
2272                               -class => "rss_logo"}, "RSS") . " ";
2273                 print $cgi->a({-href => href(action=>"atom"),
2274                               -class => "rss_logo"}, "Atom") . "\n";
2275         } else {
2276                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2277                               -class => "rss_logo"}, "OPML") . " ";
2278                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2279                               -class => "rss_logo"}, "TXT") . "\n";
2280         }
2281         print "</div>\n" ;
2282
2283         if (-f $site_footer) {
2284                 open (my $fd, $site_footer);
2285                 print <$fd>;
2286                 close $fd;
2287         }
2288
2289         print "</body>\n" .
2290               "</html>";
2291 }
2292
2293 sub die_error {
2294         my $status = shift || "403 Forbidden";
2295         my $error = shift || "Malformed query, file missing or permission denied";
2296
2297         git_header_html($status);
2298         print <<EOF;
2299 <div class="page_body">
2300 <br /><br />
2301 $status - $error
2302 <br />
2303 </div>
2304 EOF
2305         git_footer_html();
2306         exit;
2307 }
2308
2309 ## ----------------------------------------------------------------------
2310 ## functions printing or outputting HTML: navigation
2311
2312 sub git_print_page_nav {
2313         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2314         $extra = '' if !defined $extra; # pager or formats
2315
2316         my @navs = qw(summary shortlog log commit commitdiff tree);
2317         if ($suppress) {
2318                 @navs = grep { $_ ne $suppress } @navs;
2319         }
2320
2321         my %arg = map { $_ => {action=>$_} } @navs;
2322         if (defined $head) {
2323                 for (qw(commit commitdiff)) {
2324                         $arg{$_}{'hash'} = $head;
2325                 }
2326                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2327                         for (qw(shortlog log)) {
2328                                 $arg{$_}{'hash'} = $head;
2329                         }
2330                 }
2331         }
2332         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2333         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2334
2335         print "<div class=\"page_nav\">\n" .
2336                 (join " | ",
2337                  map { $_ eq $current ?
2338                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2339                  } @navs);
2340         print "<br/>\n$extra<br/>\n" .
2341               "</div>\n";
2342 }
2343
2344 sub format_paging_nav {
2345         my ($action, $hash, $head, $page, $nrevs) = @_;
2346         my $paging_nav;
2347
2348
2349         if ($hash ne $head || $page) {
2350                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2351         } else {
2352                 $paging_nav .= "HEAD";
2353         }
2354
2355         if ($page > 0) {
2356                 $paging_nav .= " &sdot; " .
2357                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2358                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2359         } else {
2360                 $paging_nav .= " &sdot; prev";
2361         }
2362
2363         if ($nrevs >= (100 * ($page+1)-1)) {
2364                 $paging_nav .= " &sdot; " .
2365                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2366                                  -accesskey => "n", -title => "Alt-n"}, "next");
2367         } else {
2368                 $paging_nav .= " &sdot; next";
2369         }
2370
2371         return $paging_nav;
2372 }
2373
2374 ## ......................................................................
2375 ## functions printing or outputting HTML: div
2376
2377 sub git_print_header_div {
2378         my ($action, $title, $hash, $hash_base) = @_;
2379         my %args = ();
2380
2381         $args{'action'} = $action;
2382         $args{'hash'} = $hash if $hash;
2383         $args{'hash_base'} = $hash_base if $hash_base;
2384
2385         print "<div class=\"header\">\n" .
2386               $cgi->a({-href => href(%args), -class => "title"},
2387               $title ? $title : $action) .
2388               "\n</div>\n";
2389 }
2390
2391 #sub git_print_authorship (\%) {
2392 sub git_print_authorship {
2393         my $co = shift;
2394
2395         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2396         print "<div class=\"author_date\">" .
2397               esc_html($co->{'author_name'}) .
2398               " [$ad{'rfc2822'}";
2399         if ($ad{'hour_local'} < 6) {
2400                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2401                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2402         } else {
2403                 printf(" (%02d:%02d %s)",
2404                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2405         }
2406         print "]</div>\n";
2407 }
2408
2409 sub git_print_page_path {
2410         my $name = shift;
2411         my $type = shift;
2412         my $hb = shift;
2413
2414
2415         print "<div class=\"page_path\">";
2416         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2417                       -title => 'tree root'}, to_utf8("[$project]"));
2418         print " / ";
2419         if (defined $name) {
2420                 my @dirname = split '/', $name;
2421                 my $basename = pop @dirname;
2422                 my $fullname = '';
2423
2424                 foreach my $dir (@dirname) {
2425                         $fullname .= ($fullname ? '/' : '') . $dir;
2426                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2427                                                      hash_base=>$hb),
2428                                       -title => $fullname}, esc_path($dir));
2429                         print " / ";
2430                 }
2431                 if (defined $type && $type eq 'blob') {
2432                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2433                                                      hash_base=>$hb),
2434                                       -title => $name}, esc_path($basename));
2435                 } elsif (defined $type && $type eq 'tree') {
2436                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2437                                                      hash_base=>$hb),
2438                                       -title => $name}, esc_path($basename));
2439                         print " / ";
2440                 } else {
2441                         print esc_path($basename);
2442                 }
2443         }
2444         print "<br/></div>\n";
2445 }
2446
2447 # sub git_print_log (\@;%) {
2448 sub git_print_log ($;%) {
2449         my $log = shift;
2450         my %opts = @_;
2451
2452         if ($opts{'-remove_title'}) {
2453                 # remove title, i.e. first line of log
2454                 shift @$log;
2455         }
2456         # remove leading empty lines
2457         while (defined $log->[0] && $log->[0] eq "") {
2458                 shift @$log;
2459         }
2460
2461         # print log
2462         my $signoff = 0;
2463         my $empty = 0;
2464         foreach my $line (@$log) {
2465                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2466                         $signoff = 1;
2467                         $empty = 0;
2468                         if (! $opts{'-remove_signoff'}) {
2469                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2470                                 next;
2471                         } else {
2472                                 # remove signoff lines
2473                                 next;
2474                         }
2475                 } else {
2476                         $signoff = 0;
2477                 }
2478
2479                 # print only one empty line
2480                 # do not print empty line after signoff
2481                 if ($line eq "") {
2482                         next if ($empty || $signoff);
2483                         $empty = 1;
2484                 } else {
2485                         $empty = 0;
2486                 }
2487
2488                 print format_log_line_html($line) . "<br/>\n";
2489         }
2490
2491         if ($opts{'-final_empty_line'}) {
2492                 # end with single empty line
2493                 print "<br/>\n" unless $empty;
2494         }
2495 }
2496
2497 # return link target (what link points to)
2498 sub git_get_link_target {
2499         my $hash = shift;
2500         my $link_target;
2501
2502         # read link
2503         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2504                 or return;
2505         {
2506                 local $/;
2507                 $link_target = <$fd>;
2508         }
2509         close $fd
2510                 or return;
2511
2512         return $link_target;
2513 }
2514
2515 # given link target, and the directory (basedir) the link is in,
2516 # return target of link relative to top directory (top tree);
2517 # return undef if it is not possible (including absolute links).
2518 sub normalize_link_target {
2519         my ($link_target, $basedir, $hash_base) = @_;
2520
2521         # we can normalize symlink target only if $hash_base is provided
2522         return unless $hash_base;
2523
2524         # absolute symlinks (beginning with '/') cannot be normalized
2525         return if (substr($link_target, 0, 1) eq '/');
2526
2527         # normalize link target to path from top (root) tree (dir)
2528         my $path;
2529         if ($basedir) {
2530                 $path = $basedir . '/' . $link_target;
2531         } else {
2532                 # we are in top (root) tree (dir)
2533                 $path = $link_target;
2534         }
2535
2536         # remove //, /./, and /../
2537         my @path_parts;
2538         foreach my $part (split('/', $path)) {
2539                 # discard '.' and ''
2540                 next if (!$part || $part eq '.');
2541                 # handle '..'
2542                 if ($part eq '..') {
2543                         if (@path_parts) {
2544                                 pop @path_parts;
2545                         } else {
2546                                 # link leads outside repository (outside top dir)
2547                                 return;
2548                         }
2549                 } else {
2550                         push @path_parts, $part;
2551                 }
2552         }
2553         $path = join('/', @path_parts);
2554
2555         return $path;
2556 }
2557
2558 # print tree entry (row of git_tree), but without encompassing <tr> element
2559 sub git_print_tree_entry {
2560         my ($t, $basedir, $hash_base, $have_blame) = @_;
2561
2562         my %base_key = ();
2563         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2564
2565         # The format of a table row is: mode list link.  Where mode is
2566         # the mode of the entry, list is the name of the entry, an href,
2567         # and link is the action links of the entry.
2568
2569         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2570         if ($t->{'type'} eq "blob") {
2571                 print "<td class=\"list\">" .
2572                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2573                                                file_name=>"$basedir$t->{'name'}", %base_key),
2574                                 -class => "list"}, esc_path($t->{'name'}));
2575                 if (S_ISLNK(oct $t->{'mode'})) {
2576                         my $link_target = git_get_link_target($t->{'hash'});
2577                         if ($link_target) {
2578                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2579                                 if (defined $norm_target) {
2580                                         print " -> " .
2581                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2582                                                                      file_name=>$norm_target),
2583                                                        -title => $norm_target}, esc_path($link_target));
2584                                 } else {
2585                                         print " -> " . esc_path($link_target);
2586                                 }
2587                         }
2588                 }
2589                 print "</td>\n";
2590                 print "<td class=\"link\">";
2591                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2592                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2593                               "blob");
2594                 if ($have_blame) {
2595                         print " | " .
2596                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2597                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2598                                       "blame");
2599                 }
2600                 if (defined $hash_base) {
2601                         print " | " .
2602                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2603                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2604                                       "history");
2605                 }
2606                 print " | " .
2607                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2608                                                file_name=>"$basedir$t->{'name'}")},
2609                                 "raw");
2610                 print "</td>\n";
2611
2612         } elsif ($t->{'type'} eq "tree") {
2613                 print "<td class=\"list\">";
2614                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2615                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2616                               esc_path($t->{'name'}));
2617                 print "</td>\n";
2618                 print "<td class=\"link\">";
2619                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2620                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2621                               "tree");
2622                 if (defined $hash_base) {
2623                         print " | " .
2624                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2625                                                      file_name=>"$basedir$t->{'name'}")},
2626                                       "history");
2627                 }
2628                 print "</td>\n";
2629         }
2630 }
2631
2632 ## ......................................................................
2633 ## functions printing large fragments of HTML
2634
2635 sub fill_from_file_info {
2636         my ($diff, @parents) = @_;
2637
2638         $diff->{'from_file'} = [ ];
2639         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2640         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2641                 if ($diff->{'status'}[$i] eq 'R' ||
2642                     $diff->{'status'}[$i] eq 'C') {
2643                         $diff->{'from_file'}[$i] =
2644                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2645                 }
2646         }
2647
2648         return $diff;
2649 }
2650
2651 # parameters can be strings, or references to arrays of strings
2652 sub from_ids_eq {
2653         my ($a, $b) = @_;
2654
2655         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2656                 for (my $i = 0; $i < @$a; ++$i) {
2657                         return 0 unless ($a->[$i] eq $b->[$i]);
2658                 }
2659                 return 1;
2660         } elsif (!ref($a) && !ref($b)) {
2661                 return $a eq $b;
2662         } else {
2663                 return 0;
2664         }
2665 }
2666
2667 sub is_deleted {
2668         my $diffinfo = shift;
2669
2670         return $diffinfo->{'to_id'} eq ('0' x 40);
2671 }
2672
2673 sub git_difftree_body {
2674         my ($difftree, $hash, @parents) = @_;
2675         my ($parent) = $parents[0];
2676         my ($have_blame) = gitweb_check_feature('blame');
2677         print "<div class=\"list_head\">\n";
2678         if ($#{$difftree} > 10) {
2679                 print(($#{$difftree} + 1) . " files changed:\n");
2680         }
2681         print "</div>\n";
2682
2683         print "<table class=\"" .
2684               (@parents > 1 ? "combined " : "") .
2685               "diff_tree\">\n";
2686
2687         # header only for combined diff in 'commitdiff' view
2688         my $has_header = @parents > 1 && $action eq 'commitdiff';
2689         if ($has_header) {
2690                 # table header
2691                 print "<thead><tr>\n" .
2692                        "<th></th><th></th>\n"; # filename, patchN link
2693                 for (my $i = 0; $i < @parents; $i++) {
2694                         my $par = $parents[$i];
2695                         print "<th>" .
2696                               $cgi->a({-href => href(action=>"commitdiff",
2697                                                      hash=>$hash, hash_parent=>$par),
2698                                        -title => 'commitdiff to parent number ' .
2699                                                   ($i+1) . ': ' . substr($par,0,7)},
2700                                       $i+1) .
2701                               "&nbsp;</th>\n";
2702                 }
2703                 print "</tr></thead>\n<tbody>\n";
2704         }
2705
2706         my $alternate = 1;
2707         my $patchno = 0;
2708         foreach my $line (@{$difftree}) {
2709                 my $diff;
2710                 if (ref($line) eq "HASH") {
2711                         # pre-parsed (or generated by hand)
2712                         $diff = $line;
2713                 } else {
2714                         $diff = parse_difftree_raw_line($line);
2715                 }
2716
2717                 if ($alternate) {
2718                         print "<tr class=\"dark\">\n";
2719                 } else {
2720                         print "<tr class=\"light\">\n";
2721                 }
2722                 $alternate ^= 1;
2723
2724                 if (exists $diff->{'nparents'}) { # combined diff
2725
2726                         fill_from_file_info($diff, @parents)
2727                                 unless exists $diff->{'from_file'};
2728
2729                         if (!is_deleted($diff)) {
2730                                 # file exists in the result (child) commit
2731                                 print "<td>" .
2732                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2733                                                              file_name=>$diff->{'to_file'},
2734                                                              hash_base=>$hash),
2735                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2736                                       "</td>\n";
2737                         } else {
2738                                 print "<td>" .
2739                                       esc_path($diff->{'to_file'}) .
2740                                       "</td>\n";
2741                         }
2742
2743                         if ($action eq 'commitdiff') {
2744                                 # link to patch
2745                                 $patchno++;
2746                                 print "<td class=\"link\">" .
2747                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2748                                       " | " .
2749                                       "</td>\n";
2750                         }
2751
2752                         my $has_history = 0;
2753                         my $not_deleted = 0;
2754                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2755                                 my $hash_parent = $parents[$i];
2756                                 my $from_hash = $diff->{'from_id'}[$i];
2757                                 my $from_path = $diff->{'from_file'}[$i];
2758                                 my $status = $diff->{'status'}[$i];
2759
2760                                 $has_history ||= ($status ne 'A');
2761                                 $not_deleted ||= ($status ne 'D');
2762
2763                                 if ($status eq 'A') {
2764                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2765                                 } elsif ($status eq 'D') {
2766                                         print "<td class=\"link\">" .
2767                                               $cgi->a({-href => href(action=>"blob",
2768                                                                      hash_base=>$hash,
2769                                                                      hash=>$from_hash,
2770                                                                      file_name=>$from_path)},
2771                                                       "blob" . ($i+1)) .
2772                                               " | </td>\n";
2773                                 } else {
2774                                         if ($diff->{'to_id'} eq $from_hash) {
2775                                                 print "<td class=\"link nochange\">";
2776                                         } else {
2777                                                 print "<td class=\"link\">";
2778                                         }
2779                                         print $cgi->a({-href => href(action=>"blobdiff",
2780                                                                      hash=>$diff->{'to_id'},
2781                                                                      hash_parent=>$from_hash,
2782                                                                      hash_base=>$hash,
2783                                                                      hash_parent_base=>$hash_parent,
2784                                                                      file_name=>$diff->{'to_file'},
2785                                                                      file_parent=>$from_path)},
2786                                                       "diff" . ($i+1)) .
2787                                               " | </td>\n";
2788                                 }
2789                         }
2790
2791                         print "<td class=\"link\">";
2792                         if ($not_deleted) {
2793                                 print $cgi->a({-href => href(action=>"blob",
2794                                                              hash=>$diff->{'to_id'},
2795                                                              file_name=>$diff->{'to_file'},
2796                                                              hash_base=>$hash)},
2797                                               "blob");
2798                                 print " | " if ($has_history);
2799                         }
2800                         if ($has_history) {
2801                                 print $cgi->a({-href => href(action=>"history",
2802                                                              file_name=>$diff->{'to_file'},
2803                                                              hash_base=>$hash)},
2804                                               "history");
2805                         }
2806                         print "</td>\n";
2807
2808                         print "</tr>\n";
2809                         next; # instead of 'else' clause, to avoid extra indent
2810                 }
2811                 # else ordinary diff
2812
2813                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2814                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2815                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2816                         $to_mode_oct = oct $diff->{'to_mode'};
2817                         if (S_ISREG($to_mode_oct)) { # only for regular file
2818                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2819                         }
2820                         $to_file_type = file_type($diff->{'to_mode'});
2821                 }
2822                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2823                         $from_mode_oct = oct $diff->{'from_mode'};
2824                         if (S_ISREG($to_mode_oct)) { # only for regular file
2825                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2826                         }
2827                         $from_file_type = file_type($diff->{'from_mode'});
2828                 }
2829
2830                 if ($diff->{'status'} eq "A") { # created
2831                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2832                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2833                         $mode_chng   .= "]</span>";
2834                         print "<td>";
2835                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2836                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2837                                       -class => "list"}, esc_path($diff->{'file'}));
2838                         print "</td>\n";
2839                         print "<td>$mode_chng</td>\n";
2840                         print "<td class=\"link\">";
2841                         if ($action eq 'commitdiff') {
2842                                 # link to patch
2843                                 $patchno++;
2844                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2845                                 print " | ";
2846                         }
2847                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2848                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2849                                       "blob");
2850                         print "</td>\n";
2851
2852                 } elsif ($diff->{'status'} eq "D") { # deleted
2853                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2854                         print "<td>";
2855                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2856                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2857                                        -class => "list"}, esc_path($diff->{'file'}));
2858                         print "</td>\n";
2859                         print "<td>$mode_chng</td>\n";
2860                         print "<td class=\"link\">";
2861                         if ($action eq 'commitdiff') {
2862                                 # link to patch
2863                                 $patchno++;
2864                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2865                                 print " | ";
2866                         }
2867                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2868                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2869                                       "blob") . " | ";
2870                         if ($have_blame) {
2871                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2872                                                              file_name=>$diff->{'file'})},
2873                                               "blame") . " | ";
2874                         }
2875                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2876                                                      file_name=>$diff->{'file'})},
2877                                       "history");
2878                         print "</td>\n";
2879
2880                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
2881                         my $mode_chnge = "";
2882                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2883                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2884                                 if ($from_file_type ne $to_file_type) {
2885                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2886                                 }
2887                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2888                                         if ($from_mode_str && $to_mode_str) {
2889                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2890                                         } elsif ($to_mode_str) {
2891                                                 $mode_chnge .= " mode: $to_mode_str";
2892                                         }
2893                                 }
2894                                 $mode_chnge .= "]</span>\n";
2895                         }
2896                         print "<td>";
2897                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2898                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2899                                       -class => "list"}, esc_path($diff->{'file'}));
2900                         print "</td>\n";
2901                         print "<td>$mode_chnge</td>\n";
2902                         print "<td class=\"link\">";
2903                         if ($action eq 'commitdiff') {
2904                                 # link to patch
2905                                 $patchno++;
2906                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2907                                       " | ";
2908                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2909                                 # "commit" view and modified file (not onlu mode changed)
2910                                 print $cgi->a({-href => href(action=>"blobdiff",
2911                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2912                                                              hash_base=>$hash, hash_parent_base=>$parent,
2913                                                              file_name=>$diff->{'file'})},
2914                                               "diff") .
2915                                       " | ";
2916                         }
2917                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2918                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2919                                        "blob") . " | ";
2920                         if ($have_blame) {
2921                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2922                                                              file_name=>$diff->{'file'})},
2923                                               "blame") . " | ";
2924                         }
2925                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2926                                                      file_name=>$diff->{'file'})},
2927                                       "history");
2928                         print "</td>\n";
2929
2930                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
2931                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2932                         my $nstatus = $status_name{$diff->{'status'}};
2933                         my $mode_chng = "";
2934                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
2935                                 # mode also for directories, so we cannot use $to_mode_str
2936                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2937                         }
2938                         print "<td>" .
2939                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2940                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
2941                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
2942                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2943                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2944                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
2945                                       -class => "list"}, esc_path($diff->{'from_file'})) .
2946                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2947                               "<td class=\"link\">";
2948                         if ($action eq 'commitdiff') {
2949                                 # link to patch
2950                                 $patchno++;
2951                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2952                                       " | ";
2953                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
2954                                 # "commit" view and modified file (not only pure rename or copy)
2955                                 print $cgi->a({-href => href(action=>"blobdiff",
2956                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
2957                                                              hash_base=>$hash, hash_parent_base=>$parent,
2958                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
2959                                               "diff") .
2960                                       " | ";
2961                         }
2962                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2963                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
2964                                       "blob") . " | ";
2965                         if ($have_blame) {
2966                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2967                                                              file_name=>$diff->{'to_file'})},
2968                                               "blame") . " | ";
2969                         }
2970                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2971                                                     file_name=>$diff->{'to_file'})},
2972                                       "history");
2973                         print "</td>\n";
2974
2975                 } # we should not encounter Unmerged (U) or Unknown (X) status
2976                 print "</tr>\n";
2977         }
2978         print "</tbody>" if $has_header;
2979         print "</table>\n";
2980 }
2981
2982 sub git_patchset_body {
2983         my ($fd, $difftree, $hash, @hash_parents) = @_;
2984         my ($hash_parent) = $hash_parents[0];
2985
2986         my $patch_idx = 0;
2987         my $patch_number = 0;
2988         my $patch_line;
2989         my $diffinfo;
2990         my (%from, %to);
2991
2992         print "<div class=\"patchset\">\n";
2993
2994         # skip to first patch
2995         while ($patch_line = <$fd>) {
2996                 chomp $patch_line;
2997
2998                 last if ($patch_line =~ m/^diff /);
2999         }
3000
3001  PATCH:
3002         while ($patch_line) {
3003                 my @diff_header;
3004                 my ($from_id, $to_id);
3005
3006                 # git diff header
3007                 #assert($patch_line =~ m/^diff /) if DEBUG;
3008                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3009                 $patch_number++;
3010                 push @diff_header, $patch_line;
3011
3012                 # extended diff header
3013         EXTENDED_HEADER:
3014                 while ($patch_line = <$fd>) {
3015                         chomp $patch_line;
3016
3017                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3018
3019                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3020                                 $from_id = $1;
3021                                 $to_id   = $2;
3022                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3023                                 $from_id = [ split(',', $1) ];
3024                                 $to_id   = $2;
3025                         }
3026
3027                         push @diff_header, $patch_line;
3028                 }
3029                 my $last_patch_line = $patch_line;
3030
3031                 # check if current patch belong to current raw line
3032                 # and parse raw git-diff line if needed
3033                 if (defined $diffinfo &&
3034                     defined $from_id && defined $to_id &&
3035                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3036                     $diffinfo->{'to_id'} eq $to_id) {
3037                         # this is continuation of a split patch
3038                         print "<div class=\"patch cont\">\n";
3039                 } else {
3040                         # advance raw git-diff output if needed
3041                         $patch_idx++ if defined $diffinfo;
3042
3043                         # compact combined diff output can have some patches skipped
3044                         # find which patch (using pathname of result) we are at now
3045                         my $to_name;
3046                         if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3047                                 $to_name = $1;
3048                         }
3049
3050                         do {
3051                                 # read and prepare patch information
3052                                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3053                                         # pre-parsed (or generated by hand)
3054                                         $diffinfo = $difftree->[$patch_idx];
3055                                 } else {
3056                                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3057                                 }
3058
3059                                 # check if current raw line has no patch (it got simplified)
3060                                 if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3061                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3062                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3063                                               "</div>\n";  # class="patch"
3064
3065                                         $patch_idx++;
3066                                         $patch_number++;
3067                                 }
3068                         } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3069                                  $patch_idx > $#$difftree);
3070                         # modifies %from, %to hashes
3071                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3072                         if ($diffinfo->{'nparents'}) {
3073                                 # combined diff
3074                                 $from{'file'} = [];
3075                                 $from{'href'} = [];
3076                                 fill_from_file_info($diffinfo, @hash_parents)
3077                                         unless exists $diffinfo->{'from_file'};
3078                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3079                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3080                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3081                                                 $from{'href'}[$i] = href(action=>"blob",
3082                                                                          hash_base=>$hash_parents[$i],
3083                                                                          hash=>$diffinfo->{'from_id'}[$i],
3084                                                                          file_name=>$from{'file'}[$i]);
3085                                         } else {
3086                                                 $from{'href'}[$i] = undef;
3087                                         }
3088                                 }
3089                         } else {
3090                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3091                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
3092                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3093                                                              hash=>$diffinfo->{'from_id'},
3094                                                              file_name=>$from{'file'});
3095                                 } else {
3096                                         delete $from{'href'};
3097                                 }
3098                         }
3099
3100                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3101                         if (!is_deleted($diffinfo)) { # file exists in result
3102                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
3103                                                    hash=>$diffinfo->{'to_id'},
3104                                                    file_name=>$to{'file'});
3105                         } else {
3106                                 delete $to{'href'};
3107                         }
3108                         # this is first patch for raw difftree line with $patch_idx index
3109                         # we index @$difftree array from 0, but number patches from 1
3110                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3111                 }
3112
3113                 # print "git diff" header
3114                 $patch_line = shift @diff_header;
3115                 print format_git_diff_header_line($patch_line, $diffinfo,
3116                                                   \%from, \%to);
3117
3118                 # print extended diff header
3119                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3120         EXTENDED_HEADER:
3121                 foreach $patch_line (@diff_header) {
3122                         print format_extended_diff_header_line($patch_line, $diffinfo,
3123                                                                \%from, \%to);
3124                 }
3125                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3126
3127                 # from-file/to-file diff header
3128                 $patch_line = $last_patch_line;
3129                 if (! $patch_line) {
3130                         print "</div>\n"; # class="patch"
3131                         last PATCH;
3132                 }
3133                 next PATCH if ($patch_line =~ m/^diff /);
3134                 #assert($patch_line =~ m/^---/) if DEBUG;
3135                 #assert($patch_line eq $last_patch_line) if DEBUG;
3136
3137                 $patch_line = <$fd>;
3138                 chomp $patch_line;
3139                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3140
3141                 print format_diff_from_to_header($last_patch_line, $patch_line,
3142                                                  $diffinfo, \%from, \%to,
3143                                                  @hash_parents);
3144
3145                 # the patch itself
3146         LINE:
3147                 while ($patch_line = <$fd>) {
3148                         chomp $patch_line;
3149
3150                         next PATCH if ($patch_line =~ m/^diff /);
3151
3152                         print format_diff_line($patch_line, \%from, \%to);
3153                 }
3154
3155         } continue {
3156                 print "</div>\n"; # class="patch"
3157         }
3158
3159         # for compact combined (--cc) format, with chunk and patch simpliciaction
3160         # patchset might be empty, but there might be unprocessed raw lines
3161         for ($patch_idx++ if $patch_number > 0;
3162              $patch_idx < @$difftree;
3163              $patch_idx++) {
3164                 # read and prepare patch information
3165                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3166                         # pre-parsed (or generated by hand)
3167                         $diffinfo = $difftree->[$patch_idx];
3168                 } else {
3169                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3170                 }
3171
3172                 # generate anchor for "patch" links in difftree / whatchanged part
3173                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3174                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3175                       "</div>\n";  # class="patch"
3176
3177                 $patch_number++;
3178         }
3179
3180         if ($patch_number == 0) {
3181                 if (@hash_parents > 1) {
3182                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3183                 } else {
3184                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3185                 }
3186         }
3187
3188         print "</div>\n"; # class="patchset"
3189 }
3190
3191 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3192
3193 sub git_project_list_body {
3194         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3195
3196         my ($check_forks) = gitweb_check_feature('forks');
3197
3198         my @projects;
3199         foreach my $pr (@$projlist) {
3200                 my (@aa) = git_get_last_activity($pr->{'path'});
3201                 unless (@aa) {
3202                         next;
3203                 }
3204                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3205                 if (!defined $pr->{'descr'}) {
3206                         my $descr = git_get_project_description($pr->{'path'}) || "";
3207                         $pr->{'descr_long'} = to_utf8($descr);
3208                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3209                 }
3210                 if (!defined $pr->{'owner'}) {
3211                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3212                 }
3213                 if ($check_forks) {
3214                         my $pname = $pr->{'path'};
3215                         if (($pname =~ s/\.git$//) &&
3216                             ($pname !~ /\/$/) &&
3217                             (-d "$projectroot/$pname")) {
3218                                 $pr->{'forks'} = "-d $projectroot/$pname";
3219                         }
3220                         else {
3221                                 $pr->{'forks'} = 0;
3222                         }
3223                 }
3224                 push @projects, $pr;
3225         }
3226
3227         $order ||= $default_projects_order;
3228         $from = 0 unless defined $from;
3229         $to = $#projects if (!defined $to || $#projects < $to);
3230
3231         print "<table class=\"project_list\">\n";
3232         unless ($no_header) {
3233                 print "<tr>\n";
3234                 if ($check_forks) {
3235                         print "<th></th>\n";
3236                 }
3237                 if ($order eq "project") {
3238                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3239                         print "<th>Project</th>\n";
3240                 } else {
3241                         print "<th>" .
3242                               $cgi->a({-href => href(project=>undef, order=>'project'),
3243                                        -class => "header"}, "Project") .
3244                               "</th>\n";
3245                 }
3246                 if ($order eq "descr") {
3247                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3248                         print "<th>Description</th>\n";
3249                 } else {
3250                         print "<th>" .
3251                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3252                                        -class => "header"}, "Description") .
3253                               "</th>\n";
3254                 }
3255                 if ($order eq "owner") {
3256                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3257                         print "<th>Owner</th>\n";
3258                 } else {
3259                         print "<th>" .
3260                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3261                                        -class => "header"}, "Owner") .
3262                               "</th>\n";
3263                 }
3264                 if ($order eq "age") {
3265                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3266                         print "<th>Last Change</th>\n";
3267                 } else {
3268                         print "<th>" .
3269                               $cgi->a({-href => href(project=>undef, order=>'age'),
3270                                        -class => "header"}, "Last Change") .
3271                               "</th>\n";
3272                 }
3273                 print "<th></th>\n" .
3274                       "</tr>\n";
3275         }
3276         my $alternate = 1;
3277         for (my $i = $from; $i <= $to; $i++) {
3278                 my $pr = $projects[$i];
3279                 if ($alternate) {
3280                         print "<tr class=\"dark\">\n";
3281                 } else {
3282                         print "<tr class=\"light\">\n";
3283                 }
3284                 $alternate ^= 1;
3285                 if ($check_forks) {
3286                         print "<td>";
3287                         if ($pr->{'forks'}) {
3288                                 print "<!-- $pr->{'forks'} -->\n";
3289                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3290                         }
3291                         print "</td>\n";
3292                 }
3293                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3294                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3295                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3296                                         -class => "list", -title => $pr->{'descr_long'}},
3297                                         esc_html($pr->{'descr'})) . "</td>\n" .
3298                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
3299                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3300                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3301                       "<td class=\"link\">" .
3302                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3303                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3304                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3305                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3306                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3307                       "</td>\n" .
3308                       "</tr>\n";
3309         }
3310         if (defined $extra) {
3311                 print "<tr>\n";
3312                 if ($check_forks) {
3313                         print "<td></td>\n";
3314                 }
3315                 print "<td colspan=\"5\">$extra</td>\n" .
3316                       "</tr>\n";
3317         }
3318         print "</table>\n";
3319 }
3320
3321 sub git_shortlog_body {
3322         # uses global variable $project
3323         my ($commitlist, $from, $to, $refs, $extra) = @_;
3324
3325         my $have_snapshot = gitweb_have_snapshot();
3326
3327         $from = 0 unless defined $from;
3328         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3329
3330         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3331         my $alternate = 1;
3332         for (my $i = $from; $i <= $to; $i++) {
3333                 my %co = %{$commitlist->[$i]};
3334                 my $commit = $co{'id'};
3335                 my $ref = format_ref_marker($refs, $commit);
3336                 if ($alternate) {
3337                         print "<tr class=\"dark\">\n";
3338                 } else {
3339                         print "<tr class=\"light\">\n";
3340                 }
3341                 $alternate ^= 1;
3342                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3343                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3344                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3345                       "<td>";
3346                 print format_subject_html($co{'title'}, $co{'title_short'},
3347                                           href(action=>"commit", hash=>$commit), $ref);
3348                 print "</td>\n" .
3349                       "<td class=\"link\">" .
3350                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3351                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3352                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3353                 if ($have_snapshot) {
3354                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
3355                 }
3356                 print "</td>\n" .
3357                       "</tr>\n";
3358         }
3359         if (defined $extra) {
3360                 print "<tr>\n" .
3361                       "<td colspan=\"4\">$extra</td>\n" .
3362                       "</tr>\n";
3363         }
3364         print "</table>\n";
3365 }
3366
3367 sub git_history_body {
3368         # Warning: assumes constant type (blob or tree) during history
3369         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3370
3371         $from = 0 unless defined $from;
3372         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3373
3374         print "<table class=\"history\" cellspacing=\"0\">\n";
3375         my $alternate = 1;
3376         for (my $i = $from; $i <= $to; $i++) {
3377                 my %co = %{$commitlist->[$i]};
3378                 if (!%co) {
3379                         next;
3380                 }
3381                 my $commit = $co{'id'};
3382
3383                 my $ref = format_ref_marker($refs, $commit);
3384
3385                 if ($alternate) {
3386                         print "<tr class=\"dark\">\n";
3387                 } else {
3388                         print "<tr class=\"light\">\n";
3389                 }
3390                 $alternate ^= 1;
3391                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3392                       # shortlog uses      chop_str($co{'author_name'}, 10)
3393                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3394                       "<td>";
3395                 # originally git_history used chop_str($co{'title'}, 50)
3396                 print format_subject_html($co{'title'}, $co{'title_short'},
3397                                           href(action=>"commit", hash=>$commit), $ref);
3398                 print "</td>\n" .
3399                       "<td class=\"link\">" .
3400                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3401                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3402
3403                 if ($ftype eq 'blob') {
3404                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3405                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3406                         if (defined $blob_current && defined $blob_parent &&
3407                                         $blob_current ne $blob_parent) {
3408                                 print " | " .
3409                                         $cgi->a({-href => href(action=>"blobdiff",
3410                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3411                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3412                                                                file_name=>$file_name)},
3413                                                 "diff to current");
3414                         }
3415                 }
3416                 print "</td>\n" .
3417                       "</tr>\n";
3418         }
3419         if (defined $extra) {
3420                 print "<tr>\n" .
3421                       "<td colspan=\"4\">$extra</td>\n" .
3422                       "</tr>\n";
3423         }
3424         print "</table>\n";
3425 }
3426
3427 sub git_tags_body {
3428         # uses global variable $project
3429         my ($taglist, $from, $to, $extra) = @_;
3430         $from = 0 unless defined $from;
3431         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3432
3433         print "<table class=\"tags\" cellspacing=\"0\">\n";
3434         my $alternate = 1;
3435         for (my $i = $from; $i <= $to; $i++) {
3436                 my $entry = $taglist->[$i];
3437                 my %tag = %$entry;
3438                 my $comment = $tag{'subject'};
3439                 my $comment_short;
3440                 if (defined $comment) {
3441                         $comment_short = chop_str($comment, 30, 5);
3442                 }
3443                 if ($alternate) {
3444                         print "<tr class=\"dark\">\n";
3445                 } else {
3446                         print "<tr class=\"light\">\n";
3447                 }
3448                 $alternate ^= 1;
3449                 if (defined $tag{'age'}) {
3450                         print "<td><i>$tag{'age'}</i></td>\n";
3451                 } else {
3452                         print "<td></td>\n";
3453                 }
3454                 print "<td>" .
3455                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3456                                -class => "list name"}, esc_html($tag{'name'})) .
3457                       "</td>\n" .
3458                       "<td>";
3459                 if (defined $comment) {
3460                         print format_subject_html($comment, $comment_short,
3461                                                   href(action=>"tag", hash=>$tag{'id'}));
3462                 }
3463                 print "</td>\n" .
3464                       "<td class=\"selflink\">";
3465                 if ($tag{'type'} eq "tag") {
3466                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3467                 } else {
3468                         print "&nbsp;";
3469                 }
3470                 print "</td>\n" .
3471                       "<td class=\"link\">" . " | " .
3472                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3473                 if ($tag{'reftype'} eq "commit") {
3474                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3475                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3476                 } elsif ($tag{'reftype'} eq "blob") {
3477                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3478                 }
3479                 print "</td>\n" .
3480                       "</tr>";
3481         }
3482         if (defined $extra) {
3483                 print "<tr>\n" .
3484                       "<td colspan=\"5\">$extra</td>\n" .
3485                       "</tr>\n";
3486         }
3487         print "</table>\n";
3488 }
3489
3490 sub git_heads_body {
3491         # uses global variable $project
3492         my ($headlist, $head, $from, $to, $extra) = @_;
3493         $from = 0 unless defined $from;
3494         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3495
3496         print "<table class=\"heads\" cellspacing=\"0\">\n";
3497         my $alternate = 1;
3498         for (my $i = $from; $i <= $to; $i++) {
3499                 my $entry = $headlist->[$i];
3500                 my %ref = %$entry;
3501                 my $curr = $ref{'id'} eq $head;
3502                 if ($alternate) {
3503                         print "<tr class=\"dark\">\n";
3504                 } else {
3505                         print "<tr class=\"light\">\n";
3506                 }
3507                 $alternate ^= 1;
3508                 print "<td><i>$ref{'age'}</i></td>\n" .
3509                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3510                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3511                                -class => "list name"},esc_html($ref{'name'})) .
3512                       "</td>\n" .
3513                       "<td class=\"link\">" .
3514                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3515                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3516                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3517                       "</td>\n" .
3518                       "</tr>";
3519         }
3520         if (defined $extra) {
3521                 print "<tr>\n" .
3522                       "<td colspan=\"3\">$extra</td>\n" .
3523                       "</tr>\n";
3524         }
3525         print "</table>\n";
3526 }
3527
3528 sub git_search_grep_body {
3529         my ($commitlist, $from, $to, $extra) = @_;
3530         $from = 0 unless defined $from;
3531         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3532
3533         print "<table class=\"grep\" cellspacing=\"0\">\n";
3534         my $alternate = 1;
3535         for (my $i = $from; $i <= $to; $i++) {
3536                 my %co = %{$commitlist->[$i]};
3537                 if (!%co) {
3538                         next;
3539                 }
3540                 my $commit = $co{'id'};
3541                 if ($alternate) {
3542                         print "<tr class=\"dark\">\n";
3543                 } else {
3544                         print "<tr class=\"light\">\n";
3545                 }
3546                 $alternate ^= 1;
3547                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3548                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3549                       "<td>" .
3550                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3551                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3552                 my $comment = $co{'comment'};
3553                 foreach my $line (@$comment) {
3554                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3555                                 my $lead = esc_html($1) || "";
3556                                 $lead = chop_str($lead, 30, 10);
3557                                 my $match = esc_html($2) || "";
3558                                 my $trail = esc_html($3) || "";
3559                                 $trail = chop_str($trail, 30, 10);
3560                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3561                                 print chop_str($text, 80, 5) . "<br/>\n";
3562                         }
3563                 }
3564                 print "</td>\n" .
3565                       "<td class=\"link\">" .
3566                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3567                       " | " .
3568                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3569                 print "</td>\n" .
3570                       "</tr>\n";
3571         }
3572         if (defined $extra) {
3573                 print "<tr>\n" .
3574                       "<td colspan=\"3\">$extra</td>\n" .
3575                       "</tr>\n";
3576         }
3577         print "</table>\n";
3578 }
3579
3580 ## ======================================================================
3581 ## ======================================================================
3582 ## actions
3583
3584 sub git_project_list {
3585         my $order = $cgi->param('o');
3586         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3587                 die_error(undef, "Unknown order parameter");
3588         }
3589
3590         my @list = git_get_projects_list();
3591         if (!@list) {
3592                 die_error(undef, "No projects found");
3593         }
3594
3595         git_header_html();
3596         if (-f $home_text) {
3597                 print "<div class=\"index_include\">\n";
3598                 open (my $fd, $home_text);
3599                 print <$fd>;
3600                 close $fd;
3601                 print "</div>\n";
3602         }
3603         git_project_list_body(\@list, $order);
3604         git_footer_html();
3605 }
3606
3607 sub git_forks {
3608         my $order = $cgi->param('o');
3609         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3610                 die_error(undef, "Unknown order parameter");
3611         }
3612
3613         my @list = git_get_projects_list($project);
3614         if (!@list) {
3615                 die_error(undef, "No forks found");
3616         }
3617
3618         git_header_html();
3619         git_print_page_nav('','');
3620         git_print_header_div('summary', "$project forks");
3621         git_project_list_body(\@list, $order);
3622         git_footer_html();
3623 }
3624
3625 sub git_project_index {
3626         my @projects = git_get_projects_list($project);
3627
3628         print $cgi->header(
3629                 -type => 'text/plain',
3630                 -charset => 'utf-8',
3631                 -content_disposition => 'inline; filename="index.aux"');
3632
3633         foreach my $pr (@projects) {
3634                 if (!exists $pr->{'owner'}) {
3635                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3636                 }
3637
3638                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3639                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3640                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3641                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3642                 $path  =~ s/ /\+/g;
3643                 $owner =~ s/ /\+/g;
3644
3645                 print "$path $owner\n";
3646         }
3647 }
3648
3649 sub git_summary {
3650         my $descr = git_get_project_description($project) || "none";
3651         my %co = parse_commit("HEAD");
3652         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3653         my $head = $co{'id'};
3654
3655         my $owner = git_get_project_owner($project);
3656
3657         my $refs = git_get_references();
3658         # These get_*_list functions return one more to allow us to see if
3659         # there are more ...
3660         my @taglist  = git_get_tags_list(16);
3661         my @headlist = git_get_heads_list(16);
3662         my @forklist;
3663         my ($check_forks) = gitweb_check_feature('forks');
3664
3665         if ($check_forks) {
3666                 @forklist = git_get_projects_list($project);
3667         }
3668
3669         git_header_html();
3670         git_print_page_nav('summary','', $head);
3671
3672         print "<div class=\"title\">&nbsp;</div>\n";
3673         print "<table cellspacing=\"0\">\n" .
3674               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3675               "<tr><td>owner</td><td>$owner</td></tr>\n";
3676         if (defined $cd{'rfc2822'}) {
3677                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3678         }
3679
3680         # use per project git URL list in $projectroot/$project/cloneurl
3681         # or make project git URL from git base URL and project name
3682         my $url_tag = "URL";
3683         my @url_list = git_get_project_url_list($project);
3684         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3685         foreach my $git_url (@url_list) {
3686                 next unless $git_url;
3687                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3688                 $url_tag = "";
3689         }
3690         print "</table>\n";
3691
3692         if (-s "$projectroot/$project/README.html") {
3693                 if (open my $fd, "$projectroot/$project/README.html") {
3694                         print "<div class=\"title\">readme</div>\n";
3695                         print $_ while (<$fd>);
3696                         close $fd;
3697                 }
3698         }
3699
3700         # we need to request one more than 16 (0..15) to check if
3701         # those 16 are all
3702         my @commitlist = $head ? parse_commits($head, 17) : ();
3703         if (@commitlist) {
3704                 git_print_header_div('shortlog');
3705                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3706                                   $#commitlist <=  15 ? undef :
3707                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3708         }
3709
3710         if (@taglist) {
3711                 git_print_header_div('tags');
3712                 git_tags_body(\@taglist, 0, 15,
3713                               $#taglist <=  15 ? undef :
3714                               $cgi->a({-href => href(action=>"tags")}, "..."));
3715         }
3716
3717         if (@headlist) {
3718                 git_print_header_div('heads');
3719                 git_heads_body(\@headlist, $head, 0, 15,
3720                                $#headlist <= 15 ? undef :
3721                                $cgi->a({-href => href(action=>"heads")}, "..."));
3722         }
3723
3724         if (@forklist) {
3725                 git_print_header_div('forks');
3726                 git_project_list_body(\@forklist, undef, 0, 15,
3727                                       $#forklist <= 15 ? undef :
3728                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3729                                       'noheader');
3730         }
3731
3732         git_footer_html();
3733 }
3734
3735 sub git_tag {
3736         my $head = git_get_head_hash($project);
3737         git_header_html();
3738         git_print_page_nav('','', $head,undef,$head);
3739         my %tag = parse_tag($hash);
3740
3741         if (! %tag) {
3742                 die_error(undef, "Unknown tag object");
3743         }
3744
3745         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3746         print "<div class=\"title_text\">\n" .
3747               "<table cellspacing=\"0\">\n" .
3748               "<tr>\n" .
3749               "<td>object</td>\n" .
3750               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3751                                $tag{'object'}) . "</td>\n" .
3752               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3753                                               $tag{'type'}) . "</td>\n" .
3754               "</tr>\n";
3755         if (defined($tag{'author'})) {
3756                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3757                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3758                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3759                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3760                         "</td></tr>\n";
3761         }
3762         print "</table>\n\n" .
3763               "</div>\n";
3764         print "<div class=\"page_body\">";
3765         my $comment = $tag{'comment'};
3766         foreach my $line (@$comment) {
3767                 chomp $line;
3768                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3769         }
3770         print "</div>\n";
3771         git_footer_html();
3772 }
3773
3774 sub git_blame2 {
3775         my $fd;
3776         my $ftype;
3777
3778         my ($have_blame) = gitweb_check_feature('blame');
3779         if (!$have_blame) {
3780                 die_error('403 Permission denied', "Permission denied");
3781         }
3782         die_error('404 Not Found', "File name not defined") if (!$file_name);
3783         $hash_base ||= git_get_head_hash($project);
3784         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3785         my %co = parse_commit($hash_base)
3786                 or die_error(undef, "Reading commit failed");
3787         if (!defined $hash) {
3788                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3789                         or die_error(undef, "Error looking up file");
3790         }
3791         $ftype = git_get_type($hash);
3792         if ($ftype !~ "blob") {
3793                 die_error('400 Bad Request', "Object is not a blob");
3794         }
3795         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3796               $file_name, $hash_base)
3797                 or die_error(undef, "Open git-blame failed");
3798         git_header_html();
3799         my $formats_nav =
3800                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3801                         "blob") .
3802                 " | " .
3803                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3804                         "history") .
3805                 " | " .
3806                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3807                         "HEAD");
3808         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3809         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3810         git_print_page_path($file_name, $ftype, $hash_base);
3811         my @rev_color = (qw(light2 dark2));
3812         my $num_colors = scalar(@rev_color);
3813         my $current_color = 0;
3814         my $last_rev;
3815         print <<HTML;
3816 <div class="page_body">
3817 <table class="blame">
3818 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3819 HTML
3820         my %metainfo = ();
3821         while (1) {
3822                 $_ = <$fd>;
3823                 last unless defined $_;
3824                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3825                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3826                 if (!exists $metainfo{$full_rev}) {
3827                         $metainfo{$full_rev} = {};
3828                 }
3829                 my $meta = $metainfo{$full_rev};
3830                 while (<$fd>) {
3831                         last if (s/^\t//);
3832                         if (/^(\S+) (.*)$/) {
3833                                 $meta->{$1} = $2;
3834                         }
3835                 }
3836                 my $data = $_;
3837                 chomp $data;
3838                 my $rev = substr($full_rev, 0, 8);
3839                 my $author = $meta->{'author'};
3840                 my %date = parse_date($meta->{'author-time'},
3841                                       $meta->{'author-tz'});
3842                 my $date = $date{'iso-tz'};
3843                 if ($group_size) {
3844                         $current_color = ++$current_color % $num_colors;
3845                 }
3846                 print "<tr class=\"$rev_color[$current_color]\">\n";
3847                 if ($group_size) {
3848                         print "<td class=\"sha1\"";
3849                         print " title=\"". esc_html($author) . ", $date\"";
3850                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3851                         print ">";
3852                         print $cgi->a({-href => href(action=>"commit",
3853                                                      hash=>$full_rev,
3854                                                      file_name=>$file_name)},
3855                                       esc_html($rev));
3856                         print "</td>\n";
3857                 }
3858                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3859                         or die_error(undef, "Open git-rev-parse failed");
3860                 my $parent_commit = <$dd>;
3861                 close $dd;
3862                 chomp($parent_commit);
3863                 my $blamed = href(action => 'blame',
3864                                   file_name => $meta->{'filename'},
3865                                   hash_base => $parent_commit);
3866                 print "<td class=\"linenr\">";
3867                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3868                                 -id => "l$lineno",
3869                                 -class => "linenr" },
3870                               esc_html($lineno));
3871                 print "</td>";
3872                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3873                 print "</tr>\n";
3874         }
3875         print "</table>\n";
3876         print "</div>";
3877         close $fd
3878                 or print "Reading blob failed\n";
3879         git_footer_html();
3880 }
3881
3882 sub git_blame {
3883         my $fd;
3884
3885         my ($have_blame) = gitweb_check_feature('blame');
3886         if (!$have_blame) {
3887                 die_error('403 Permission denied', "Permission denied");
3888         }
3889         die_error('404 Not Found', "File name not defined") if (!$file_name);
3890         $hash_base ||= git_get_head_hash($project);
3891         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3892         my %co = parse_commit($hash_base)
3893                 or die_error(undef, "Reading commit failed");
3894         if (!defined $hash) {
3895                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3896                         or die_error(undef, "Error lookup file");
3897         }
3898         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3899                 or die_error(undef, "Open git-annotate failed");
3900         git_header_html();
3901         my $formats_nav =
3902                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3903                         "blob") .
3904                 " | " .
3905                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3906                         "history") .
3907                 " | " .
3908                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3909                         "HEAD");
3910         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3911         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3912         git_print_page_path($file_name, 'blob', $hash_base);
3913         print "<div class=\"page_body\">\n";
3914         print <<HTML;
3915 <table class="blame">
3916   <tr>
3917     <th>Commit</th>
3918     <th>Age</th>
3919     <th>Author</th>
3920     <th>Line</th>
3921     <th>Data</th>
3922   </tr>
3923 HTML
3924         my @line_class = (qw(light dark));
3925         my $line_class_len = scalar (@line_class);
3926         my $line_class_num = $#line_class;
3927         while (my $line = <$fd>) {
3928                 my $long_rev;
3929                 my $short_rev;
3930                 my $author;
3931                 my $time;
3932                 my $lineno;
3933                 my $data;
3934                 my $age;
3935                 my $age_str;
3936                 my $age_class;
3937
3938                 chomp $line;
3939                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3940
3941                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3942                         $long_rev = $1;
3943                         $author   = $2;
3944                         $time     = $3;
3945                         $lineno   = $4;
3946                         $data     = $5;
3947                 } else {
3948                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3949                         next;
3950                 }
3951                 $short_rev  = substr ($long_rev, 0, 8);
3952                 $age        = time () - $time;
3953                 $age_str    = age_string ($age);
3954                 $age_str    =~ s/ /&nbsp;/g;
3955                 $age_class  = age_class($age);
3956                 $author     = esc_html ($author);
3957                 $author     =~ s/ /&nbsp;/g;
3958
3959                 $data = untabify($data);
3960                 $data = esc_html ($data);
3961
3962                 print <<HTML;
3963   <tr class="$line_class[$line_class_num]">
3964     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3965     <td class="$age_class">$age_str</td>
3966     <td>$author</td>
3967     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3968     <td class="pre">$data</td>
3969   </tr>
3970 HTML
3971         } # while (my $line = <$fd>)
3972         print "</table>\n\n";
3973         close $fd
3974                 or print "Reading blob failed.\n";
3975         print "</div>";
3976         git_footer_html();
3977 }
3978
3979 sub git_tags {
3980         my $head = git_get_head_hash($project);
3981         git_header_html();
3982         git_print_page_nav('','', $head,undef,$head);
3983         git_print_header_div('summary', $project);
3984
3985         my @tagslist = git_get_tags_list();
3986         if (@tagslist) {
3987                 git_tags_body(\@tagslist);
3988         }
3989         git_footer_html();
3990 }
3991
3992 sub git_heads {
3993         my $head = git_get_head_hash($project);
3994         git_header_html();
3995         git_print_page_nav('','', $head,undef,$head);
3996         git_print_header_div('summary', $project);
3997
3998         my @headslist = git_get_heads_list();
3999         if (@headslist) {
4000                 git_heads_body(\@headslist, $head);
4001         }
4002         git_footer_html();
4003 }
4004
4005 sub git_blob_plain {
4006         my $expires;
4007
4008         if (!defined $hash) {
4009                 if (defined $file_name) {
4010                         my $base = $hash_base || git_get_head_hash($project);
4011                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4012                                 or die_error(undef, "Error lookup file");
4013                 } else {
4014                         die_error(undef, "No file name defined");
4015                 }
4016         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4017                 # blobs defined by non-textual hash id's can be cached
4018                 $expires = "+1d";
4019         }
4020
4021         my $type = shift;
4022         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4023                 or die_error(undef, "Couldn't cat $file_name, $hash");
4024
4025         $type ||= blob_mimetype($fd, $file_name);
4026
4027         # save as filename, even when no $file_name is given
4028         my $save_as = "$hash";
4029         if (defined $file_name) {
4030                 $save_as = $file_name;
4031         } elsif ($type =~ m/^text\//) {
4032                 $save_as .= '.txt';
4033         }
4034
4035         print $cgi->header(
4036                 -type => "$type",
4037                 -expires=>$expires,
4038                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4039         undef $/;
4040         binmode STDOUT, ':raw';
4041         print <$fd>;
4042         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4043         $/ = "\n";
4044         close $fd;
4045 }
4046
4047 sub git_blob {
4048         my $expires;
4049
4050         if (!defined $hash) {
4051                 if (defined $file_name) {
4052                         my $base = $hash_base || git_get_head_hash($project);
4053                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4054                                 or die_error(undef, "Error lookup file");
4055                 } else {
4056                         die_error(undef, "No file name defined");
4057                 }
4058         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4059                 # blobs defined by non-textual hash id's can be cached
4060                 $expires = "+1d";
4061         }
4062
4063         my ($have_blame) = gitweb_check_feature('blame');
4064         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4065                 or die_error(undef, "Couldn't cat $file_name, $hash");
4066         my $mimetype = blob_mimetype($fd, $file_name);
4067         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4068                 close $fd;
4069                 return git_blob_plain($mimetype);
4070         }
4071         # we can have blame only for text/* mimetype
4072         $have_blame &&= ($mimetype =~ m!^text/!);
4073
4074         git_header_html(undef, $expires);
4075         my $formats_nav = '';
4076         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4077                 if (defined $file_name) {
4078                         if ($have_blame) {
4079                                 $formats_nav .=
4080                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4081                                                                hash=>$hash, file_name=>$file_name)},
4082                                                 "blame") .
4083                                         " | ";
4084                         }
4085                         $formats_nav .=
4086                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4087                                                        hash=>$hash, file_name=>$file_name)},
4088                                         "history") .
4089                                 " | " .
4090                                 $cgi->a({-href => href(action=>"blob_plain",
4091                                                        hash=>$hash, file_name=>$file_name)},
4092                                         "raw") .
4093                                 " | " .
4094                                 $cgi->a({-href => href(action=>"blob",
4095                                                        hash_base=>"HEAD", file_name=>$file_name)},
4096                                         "HEAD");
4097                 } else {
4098                         $formats_nav .=
4099                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4100                 }
4101                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4102                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4103         } else {
4104                 print "<div class=\"page_nav\">\n" .
4105                       "<br/><br/></div>\n" .
4106                       "<div class=\"title\">$hash</div>\n";
4107         }
4108         git_print_page_path($file_name, "blob", $hash_base);
4109         print "<div class=\"page_body\">\n";
4110         if ($mimetype =~ m!^text/!) {
4111                 my $nr;
4112                 while (my $line = <$fd>) {
4113                         chomp $line;
4114                         $nr++;
4115                         $line = untabify($line);
4116                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4117                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4118                 }
4119         } elsif ($mimetype =~ m!^image/!) {
4120                 print qq!<img type="$mimetype"!;
4121                 if ($file_name) {
4122                         print qq! alt="$file_name" title="$file_name"!;
4123                 }
4124                 print qq! src="! .
4125                       href(action=>"blob_plain", hash=>$hash,
4126                            hash_base=>$hash_base, file_name=>$file_name) .
4127                       qq!" />\n!;
4128         }
4129         close $fd
4130                 or print "Reading blob failed.\n";
4131         print "</div>";
4132         git_footer_html();
4133 }
4134
4135 sub git_tree {
4136         my $have_snapshot = gitweb_have_snapshot();
4137
4138         if (!defined $hash_base) {
4139                 $hash_base = "HEAD";
4140         }
4141         if (!defined $hash) {
4142                 if (defined $file_name) {
4143                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4144                 } else {
4145                         $hash = $hash_base;
4146                 }
4147         }
4148         $/ = "\0";
4149         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4150                 or die_error(undef, "Open git-ls-tree failed");
4151         my @entries = map { chomp; $_ } <$fd>;
4152         close $fd or die_error(undef, "Reading tree failed");
4153         $/ = "\n";
4154
4155         my $refs = git_get_references();
4156         my $ref = format_ref_marker($refs, $hash_base);
4157         git_header_html();
4158         my $basedir = '';
4159         my ($have_blame) = gitweb_check_feature('blame');
4160         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4161                 my @views_nav = ();
4162                 if (defined $file_name) {
4163                         push @views_nav,
4164                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4165                                                        hash=>$hash, file_name=>$file_name)},
4166                                         "history"),
4167                                 $cgi->a({-href => href(action=>"tree",
4168                                                        hash_base=>"HEAD", file_name=>$file_name)},
4169                                         "HEAD"),
4170                 }
4171                 if ($have_snapshot) {
4172                         # FIXME: Should be available when we have no hash base as well.
4173                         push @views_nav,
4174                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
4175                                         "snapshot");
4176                 }
4177                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4178                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4179         } else {
4180                 undef $hash_base;
4181                 print "<div class=\"page_nav\">\n";
4182                 print "<br/><br/></div>\n";
4183                 print "<div class=\"title\">$hash</div>\n";
4184         }
4185         if (defined $file_name) {
4186                 $basedir = $file_name;
4187                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4188                         $basedir .= '/';
4189                 }
4190         }
4191         git_print_page_path($file_name, 'tree', $hash_base);
4192         print "<div class=\"page_body\">\n";
4193         print "<table cellspacing=\"0\">\n";
4194         my $alternate = 1;
4195         # '..' (top directory) link if possible
4196         if (defined $hash_base &&
4197             defined $file_name && $file_name =~ m![^/]+$!) {
4198                 if ($alternate) {
4199                         print "<tr class=\"dark\">\n";
4200                 } else {
4201                         print "<tr class=\"light\">\n";
4202                 }
4203                 $alternate ^= 1;
4204
4205                 my $up = $file_name;
4206                 $up =~ s!/?[^/]+$!!;
4207                 undef $up unless $up;
4208                 # based on git_print_tree_entry
4209                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4210                 print '<td class="list">';
4211                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4212                                              file_name=>$up)},
4213                               "..");
4214                 print "</td>\n";
4215                 print "<td class=\"link\"></td>\n";
4216
4217                 print "</tr>\n";
4218         }
4219         foreach my $line (@entries) {
4220                 my %t = parse_ls_tree_line($line, -z => 1);
4221
4222                 if ($alternate) {
4223                         print "<tr class=\"dark\">\n";
4224                 } else {
4225                         print "<tr class=\"light\">\n";
4226                 }
4227                 $alternate ^= 1;
4228
4229                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4230
4231                 print "</tr>\n";
4232         }
4233         print "</table>\n" .
4234               "</div>";
4235         git_footer_html();
4236 }
4237
4238 sub git_snapshot {
4239         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
4240         my $have_snapshot = (defined $ctype && defined $suffix);
4241         if (!$have_snapshot) {
4242                 die_error('403 Permission denied', "Permission denied");
4243         }
4244
4245         if (!defined $hash) {
4246                 $hash = git_get_head_hash($project);
4247         }
4248
4249         my $git = git_cmd_str();
4250         my $name = $project;
4251         $name =~ s,([^/])/*\.git$,$1,;
4252         $name = basename($name);
4253         my $filename = to_utf8($name);
4254         $name =~ s/\047/\047\\\047\047/g;
4255         my $cmd;
4256         if ($suffix eq 'zip') {
4257                 $filename .= "-$hash.$suffix";
4258                 $cmd = "$git archive --format=zip --prefix=\'$name\'/ $hash";
4259         } else {
4260                 $filename .= "-$hash.tar.$suffix";
4261                 $cmd = "$git archive --format=tar --prefix=\'$name\'/ $hash | $command";
4262         }
4263
4264         print $cgi->header(
4265                 -type => "application/$ctype",
4266                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4267                 -status => '200 OK');
4268
4269         open my $fd, "-|", $cmd
4270                 or die_error(undef, "Execute git-archive failed");
4271         binmode STDOUT, ':raw';
4272         print <$fd>;
4273         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4274         close $fd;
4275
4276 }
4277
4278 sub git_log {
4279         my $head = git_get_head_hash($project);
4280         if (!defined $hash) {
4281                 $hash = $head;
4282         }
4283         if (!defined $page) {
4284                 $page = 0;
4285         }
4286         my $refs = git_get_references();
4287
4288         my @commitlist = parse_commits($hash, 101, (100 * $page));
4289
4290         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4291
4292         git_header_html();
4293         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4294
4295         if (!@commitlist) {
4296                 my %co = parse_commit($hash);
4297
4298                 git_print_header_div('summary', $project);
4299                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4300         }
4301         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4302         for (my $i = 0; $i <= $to; $i++) {
4303                 my %co = %{$commitlist[$i]};
4304                 next if !%co;
4305                 my $commit = $co{'id'};
4306                 my $ref = format_ref_marker($refs, $commit);
4307                 my %ad = parse_date($co{'author_epoch'});
4308                 git_print_header_div('commit',
4309                                "<span class=\"age\">$co{'age_string'}</span>" .
4310                                esc_html($co{'title'}) . $ref,
4311                                $commit);
4312                 print "<div class=\"title_text\">\n" .
4313                       "<div class=\"log_link\">\n" .
4314                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4315                       " | " .
4316                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4317                       " | " .
4318                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4319                       "<br/>\n" .
4320                       "</div>\n" .
4321                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4322                       "</div>\n";
4323
4324                 print "<div class=\"log_body\">\n";
4325                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4326                 print "</div>\n";
4327         }
4328         if ($#commitlist >= 100) {
4329                 print "<div class=\"page_nav\">\n";
4330                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4331                                -accesskey => "n", -title => "Alt-n"}, "next");
4332                 print "</div>\n";
4333         }
4334         git_footer_html();
4335 }
4336
4337 sub git_commit {
4338         $hash ||= $hash_base || "HEAD";
4339         my %co = parse_commit($hash);
4340         if (!%co) {
4341                 die_error(undef, "Unknown commit object");
4342         }
4343         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4344         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4345
4346         my $parent  = $co{'parent'};
4347         my $parents = $co{'parents'}; # listref
4348
4349         # we need to prepare $formats_nav before any parameter munging
4350         my $formats_nav;
4351         if (!defined $parent) {
4352                 # --root commitdiff
4353                 $formats_nav .= '(initial)';
4354         } elsif (@$parents == 1) {
4355                 # single parent commit
4356                 $formats_nav .=
4357                         '(parent: ' .
4358                         $cgi->a({-href => href(action=>"commit",
4359                                                hash=>$parent)},
4360                                 esc_html(substr($parent, 0, 7))) .
4361                         ')';
4362         } else {
4363                 # merge commit
4364                 $formats_nav .=
4365                         '(merge: ' .
4366                         join(' ', map {
4367                                 $cgi->a({-href => href(action=>"commit",
4368                                                        hash=>$_)},
4369                                         esc_html(substr($_, 0, 7)));
4370                         } @$parents ) .
4371                         ')';
4372         }
4373
4374         if (!defined $parent) {
4375                 $parent = "--root";
4376         }
4377         my @difftree;
4378         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4379                 @diff_opts,
4380                 (@$parents <= 1 ? $parent : '-c'),
4381                 $hash, "--"
4382                 or die_error(undef, "Open git-diff-tree failed");
4383         @difftree = map { chomp; $_ } <$fd>;
4384         close $fd or die_error(undef, "Reading git-diff-tree failed");
4385
4386         # non-textual hash id's can be cached
4387         my $expires;
4388         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4389                 $expires = "+1d";
4390         }
4391         my $refs = git_get_references();
4392         my $ref = format_ref_marker($refs, $co{'id'});
4393
4394         my $have_snapshot = gitweb_have_snapshot();
4395
4396         git_header_html(undef, $expires);
4397         git_print_page_nav('commit', '',
4398                            $hash, $co{'tree'}, $hash,
4399                            $formats_nav);
4400
4401         if (defined $co{'parent'}) {
4402                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4403         } else {
4404                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4405         }
4406         print "<div class=\"title_text\">\n" .
4407               "<table cellspacing=\"0\">\n";
4408         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4409               "<tr>" .
4410               "<td></td><td> $ad{'rfc2822'}";
4411         if ($ad{'hour_local'} < 6) {
4412                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4413                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4414         } else {
4415                 printf(" (%02d:%02d %s)",
4416                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4417         }
4418         print "</td>" .
4419               "</tr>\n";
4420         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4421         print "<tr><td></td><td> $cd{'rfc2822'}" .
4422               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4423               "</td></tr>\n";
4424         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4425         print "<tr>" .
4426               "<td>tree</td>" .
4427               "<td class=\"sha1\">" .
4428               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4429                        class => "list"}, $co{'tree'}) .
4430               "</td>" .
4431               "<td class=\"link\">" .
4432               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4433                       "tree");
4434         if ($have_snapshot) {
4435                 print " | " .
4436                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
4437         }
4438         print "</td>" .
4439               "</tr>\n";
4440
4441         foreach my $par (@$parents) {
4442                 print "<tr>" .
4443                       "<td>parent</td>" .
4444                       "<td class=\"sha1\">" .
4445                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4446                                class => "list"}, $par) .
4447                       "</td>" .
4448                       "<td class=\"link\">" .
4449                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4450                       " | " .
4451                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4452                       "</td>" .
4453                       "</tr>\n";
4454         }
4455         print "</table>".
4456               "</div>\n";
4457
4458         print "<div class=\"page_body\">\n";
4459         git_print_log($co{'comment'});
4460         print "</div>\n";
4461
4462         git_difftree_body(\@difftree, $hash, @$parents);
4463
4464         git_footer_html();
4465 }
4466
4467 sub git_object {
4468         # object is defined by:
4469         # - hash or hash_base alone
4470         # - hash_base and file_name
4471         my $type;
4472
4473         # - hash or hash_base alone
4474         if ($hash || ($hash_base && !defined $file_name)) {
4475                 my $object_id = $hash || $hash_base;
4476
4477                 my $git_command = git_cmd_str();
4478                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4479                         or die_error('404 Not Found', "Object does not exist");
4480                 $type = <$fd>;
4481                 chomp $type;
4482                 close $fd
4483                         or die_error('404 Not Found', "Object does not exist");
4484
4485         # - hash_base and file_name
4486         } elsif ($hash_base && defined $file_name) {
4487                 $file_name =~ s,/+$,,;
4488
4489                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4490                         or die_error('404 Not Found', "Base object does not exist");
4491
4492                 # here errors should not hapen
4493                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4494                         or die_error(undef, "Open git-ls-tree failed");
4495                 my $line = <$fd>;
4496                 close $fd;
4497
4498                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4499                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4500                         die_error('404 Not Found', "File or directory for given base does not exist");
4501                 }
4502                 $type = $2;
4503                 $hash = $3;
4504         } else {
4505                 die_error('404 Not Found', "Not enough information to find object");
4506         }
4507
4508         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4509                                           hash=>$hash, hash_base=>$hash_base,
4510                                           file_name=>$file_name),
4511                              -status => '302 Found');
4512 }
4513
4514 sub git_blobdiff {
4515         my $format = shift || 'html';
4516
4517         my $fd;
4518         my @difftree;
4519         my %diffinfo;
4520         my $expires;
4521
4522         # preparing $fd and %diffinfo for git_patchset_body
4523         # new style URI
4524         if (defined $hash_base && defined $hash_parent_base) {
4525                 if (defined $file_name) {
4526                         # read raw output
4527                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4528                                 $hash_parent_base, $hash_base,
4529                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4530                                 or die_error(undef, "Open git-diff-tree failed");
4531                         @difftree = map { chomp; $_ } <$fd>;
4532                         close $fd
4533                                 or die_error(undef, "Reading git-diff-tree failed");
4534                         @difftree
4535                                 or die_error('404 Not Found', "Blob diff not found");
4536
4537                 } elsif (defined $hash &&
4538                          $hash =~ /[0-9a-fA-F]{40}/) {
4539                         # try to find filename from $hash
4540
4541                         # read filtered raw output
4542                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4543                                 $hash_parent_base, $hash_base, "--"
4544                                 or die_error(undef, "Open git-diff-tree failed");
4545                         @difftree =
4546                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4547                                 # $hash == to_id
4548                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4549                                 map { chomp; $_ } <$fd>;
4550                         close $fd
4551                                 or die_error(undef, "Reading git-diff-tree failed");
4552                         @difftree
4553                                 or die_error('404 Not Found', "Blob diff not found");
4554
4555                 } else {
4556                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4557                 }
4558
4559                 if (@difftree > 1) {
4560                         die_error('404 Not Found', "Ambiguous blob diff specification");
4561                 }
4562
4563                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4564                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4565                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4566
4567                 $hash_parent ||= $diffinfo{'from_id'};
4568                 $hash        ||= $diffinfo{'to_id'};
4569
4570                 # non-textual hash id's can be cached
4571                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4572                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4573                         $expires = '+1d';
4574                 }
4575
4576                 # open patch output
4577                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4578                         '-p', ($format eq 'html' ? "--full-index" : ()),
4579                         $hash_parent_base, $hash_base,
4580                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4581                         or die_error(undef, "Open git-diff-tree failed");
4582         }
4583
4584         # old/legacy style URI
4585         if (!%diffinfo && # if new style URI failed
4586             defined $hash && defined $hash_parent) {
4587                 # fake git-diff-tree raw output
4588                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4589                 $diffinfo{'from_id'} = $hash_parent;
4590                 $diffinfo{'to_id'}   = $hash;
4591                 if (defined $file_name) {
4592                         if (defined $file_parent) {
4593                                 $diffinfo{'status'} = '2';
4594                                 $diffinfo{'from_file'} = $file_parent;
4595                                 $diffinfo{'to_file'}   = $file_name;
4596                         } else { # assume not renamed
4597                                 $diffinfo{'status'} = '1';
4598                                 $diffinfo{'from_file'} = $file_name;
4599                                 $diffinfo{'to_file'}   = $file_name;
4600                         }
4601                 } else { # no filename given
4602                         $diffinfo{'status'} = '2';
4603                         $diffinfo{'from_file'} = $hash_parent;
4604                         $diffinfo{'to_file'}   = $hash;
4605                 }
4606
4607                 # non-textual hash id's can be cached
4608                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4609                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4610                         $expires = '+1d';
4611                 }
4612
4613                 # open patch output
4614                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4615                         '-p', ($format eq 'html' ? "--full-index" : ()),
4616                         $hash_parent, $hash, "--"
4617                         or die_error(undef, "Open git-diff failed");
4618         } else  {
4619                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4620                         unless %diffinfo;
4621         }
4622
4623         # header
4624         if ($format eq 'html') {
4625                 my $formats_nav =
4626                         $cgi->a({-href => href(action=>"blobdiff_plain",
4627                                                hash=>$hash, hash_parent=>$hash_parent,
4628                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4629                                                file_name=>$file_name, file_parent=>$file_parent)},
4630                                 "raw");
4631                 git_header_html(undef, $expires);
4632                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4633                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4634                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4635                 } else {
4636                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4637                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4638                 }
4639                 if (defined $file_name) {
4640                         git_print_page_path($file_name, "blob", $hash_base);
4641                 } else {
4642                         print "<div class=\"page_path\"></div>\n";
4643                 }
4644
4645         } elsif ($format eq 'plain') {
4646                 print $cgi->header(
4647                         -type => 'text/plain',
4648                         -charset => 'utf-8',
4649                         -expires => $expires,
4650                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4651
4652                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4653
4654         } else {
4655                 die_error(undef, "Unknown blobdiff format");
4656         }
4657
4658         # patch
4659         if ($format eq 'html') {
4660                 print "<div class=\"page_body\">\n";
4661
4662                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4663                 close $fd;
4664
4665                 print "</div>\n"; # class="page_body"
4666                 git_footer_html();
4667
4668         } else {
4669                 while (my $line = <$fd>) {
4670                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4671                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4672
4673                         print $line;
4674
4675                         last if $line =~ m!^\+\+\+!;
4676                 }
4677                 local $/ = undef;
4678                 print <$fd>;
4679                 close $fd;
4680         }
4681 }
4682
4683 sub git_blobdiff_plain {
4684         git_blobdiff('plain');
4685 }
4686
4687 sub git_commitdiff {
4688         my $format = shift || 'html';
4689         $hash ||= $hash_base || "HEAD";
4690         my %co = parse_commit($hash);
4691         if (!%co) {
4692                 die_error(undef, "Unknown commit object");
4693         }
4694
4695         # choose format for commitdiff for merge
4696         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4697                 $hash_parent = '--cc';
4698         }
4699         # we need to prepare $formats_nav before almost any parameter munging
4700         my $formats_nav;
4701         if ($format eq 'html') {
4702                 $formats_nav =
4703                         $cgi->a({-href => href(action=>"commitdiff_plain",
4704                                                hash=>$hash, hash_parent=>$hash_parent)},
4705                                 "raw");
4706
4707                 if (defined $hash_parent &&
4708                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4709                         # commitdiff with two commits given
4710                         my $hash_parent_short = $hash_parent;
4711                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4712                                 $hash_parent_short = substr($hash_parent, 0, 7);
4713                         }
4714                         $formats_nav .=
4715                                 ' (from';
4716                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4717                                 if ($co{'parents'}[$i] eq $hash_parent) {
4718                                         $formats_nav .= ' parent ' . ($i+1);
4719                                         last;
4720                                 }
4721                         }
4722                         $formats_nav .= ': ' .
4723                                 $cgi->a({-href => href(action=>"commitdiff",
4724                                                        hash=>$hash_parent)},
4725                                         esc_html($hash_parent_short)) .
4726                                 ')';
4727                 } elsif (!$co{'parent'}) {
4728                         # --root commitdiff
4729                         $formats_nav .= ' (initial)';
4730                 } elsif (scalar @{$co{'parents'}} == 1) {
4731                         # single parent commit
4732                         $formats_nav .=
4733                                 ' (parent: ' .
4734                                 $cgi->a({-href => href(action=>"commitdiff",
4735                                                        hash=>$co{'parent'})},
4736                                         esc_html(substr($co{'parent'}, 0, 7))) .
4737                                 ')';
4738                 } else {
4739                         # merge commit
4740                         if ($hash_parent eq '--cc') {
4741                                 $formats_nav .= ' | ' .
4742                                         $cgi->a({-href => href(action=>"commitdiff",
4743                                                                hash=>$hash, hash_parent=>'-c')},
4744                                                 'combined');
4745                         } else { # $hash_parent eq '-c'
4746                                 $formats_nav .= ' | ' .
4747                                         $cgi->a({-href => href(action=>"commitdiff",
4748                                                                hash=>$hash, hash_parent=>'--cc')},
4749                                                 'compact');
4750                         }
4751                         $formats_nav .=
4752                                 ' (merge: ' .
4753                                 join(' ', map {
4754                                         $cgi->a({-href => href(action=>"commitdiff",
4755                                                                hash=>$_)},
4756                                                 esc_html(substr($_, 0, 7)));
4757                                 } @{$co{'parents'}} ) .
4758                                 ')';
4759                 }
4760         }
4761
4762         my $hash_parent_param = $hash_parent;
4763         if (!defined $hash_parent_param) {
4764                 # --cc for multiple parents, --root for parentless
4765                 $hash_parent_param =
4766                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4767         }
4768
4769         # read commitdiff
4770         my $fd;
4771         my @difftree;
4772         if ($format eq 'html') {
4773                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4774                         "--no-commit-id", "--patch-with-raw", "--full-index",
4775                         $hash_parent_param, $hash, "--"
4776                         or die_error(undef, "Open git-diff-tree failed");
4777
4778                 while (my $line = <$fd>) {
4779                         chomp $line;
4780                         # empty line ends raw part of diff-tree output
4781                         last unless $line;
4782                         push @difftree, scalar parse_difftree_raw_line($line);
4783                 }
4784
4785         } elsif ($format eq 'plain') {
4786                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4787                         '-p', $hash_parent_param, $hash, "--"
4788                         or die_error(undef, "Open git-diff-tree failed");
4789
4790         } else {
4791                 die_error(undef, "Unknown commitdiff format");
4792         }
4793
4794         # non-textual hash id's can be cached
4795         my $expires;
4796         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4797                 $expires = "+1d";
4798         }
4799
4800         # write commit message
4801         if ($format eq 'html') {
4802                 my $refs = git_get_references();
4803                 my $ref = format_ref_marker($refs, $co{'id'});
4804
4805                 git_header_html(undef, $expires);
4806                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4807                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4808                 git_print_authorship(\%co);
4809                 print "<div class=\"page_body\">\n";
4810                 if (@{$co{'comment'}} > 1) {
4811                         print "<div class=\"log\">\n";
4812                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4813                         print "</div>\n"; # class="log"
4814                 }
4815
4816         } elsif ($format eq 'plain') {
4817                 my $refs = git_get_references("tags");
4818                 my $tagname = git_get_rev_name_tags($hash);
4819                 my $filename = basename($project) . "-$hash.patch";
4820
4821                 print $cgi->header(
4822                         -type => 'text/plain',
4823                         -charset => 'utf-8',
4824                         -expires => $expires,
4825                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4826                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4827                 print <<TEXT;
4828 From: $co{'author'}
4829 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4830 Subject: $co{'title'}
4831 TEXT
4832                 print "X-Git-Tag: $tagname\n" if $tagname;
4833                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4834
4835                 foreach my $line (@{$co{'comment'}}) {
4836                         print "$line\n";
4837                 }
4838                 print "---\n\n";
4839         }
4840
4841         # write patch
4842         if ($format eq 'html') {
4843                 my $use_parents = !defined $hash_parent ||
4844                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4845                 git_difftree_body(\@difftree, $hash,
4846                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4847                 print "<br/>\n";
4848
4849                 git_patchset_body($fd, \@difftree, $hash,
4850                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4851                 close $fd;
4852                 print "</div>\n"; # class="page_body"
4853                 git_footer_html();
4854
4855         } elsif ($format eq 'plain') {
4856                 local $/ = undef;
4857                 print <$fd>;
4858                 close $fd
4859                         or print "Reading git-diff-tree failed\n";
4860         }
4861 }
4862
4863 sub git_commitdiff_plain {
4864         git_commitdiff('plain');
4865 }
4866
4867 sub git_history {
4868         if (!defined $hash_base) {
4869                 $hash_base = git_get_head_hash($project);
4870         }
4871         if (!defined $page) {
4872                 $page = 0;
4873         }
4874         my $ftype;
4875         my %co = parse_commit($hash_base);
4876         if (!%co) {
4877                 die_error(undef, "Unknown commit object");
4878         }
4879
4880         my $refs = git_get_references();
4881         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4882
4883         if (!defined $hash && defined $file_name) {
4884                 $hash = git_get_hash_by_path($hash_base, $file_name);
4885         }
4886         if (defined $hash) {
4887                 $ftype = git_get_type($hash);
4888         }
4889
4890         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4891
4892         my $paging_nav = '';
4893         if ($page > 0) {
4894                 $paging_nav .=
4895                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4896                                                file_name=>$file_name)},
4897                                 "first");
4898                 $paging_nav .= " &sdot; " .
4899                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4900                                                file_name=>$file_name, page=>$page-1),
4901                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4902         } else {
4903                 $paging_nav .= "first";
4904                 $paging_nav .= " &sdot; prev";
4905         }
4906         if ($#commitlist >= 100) {
4907                 $paging_nav .= " &sdot; " .
4908                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4909                                                file_name=>$file_name, page=>$page+1),
4910                                  -accesskey => "n", -title => "Alt-n"}, "next");
4911         } else {
4912                 $paging_nav .= " &sdot; next";
4913         }
4914         my $next_link = '';
4915         if ($#commitlist >= 100) {
4916                 $next_link =
4917                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4918                                                file_name=>$file_name, page=>$page+1),
4919                                  -accesskey => "n", -title => "Alt-n"}, "next");
4920         }
4921
4922         git_header_html();
4923         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4924         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4925         git_print_page_path($file_name, $ftype, $hash_base);
4926
4927         git_history_body(\@commitlist, 0, 99,
4928                          $refs, $hash_base, $ftype, $next_link);
4929
4930         git_footer_html();
4931 }
4932
4933 sub git_search {
4934         my ($have_search) = gitweb_check_feature('search');
4935         if (!$have_search) {
4936                 die_error('403 Permission denied', "Permission denied");
4937         }
4938         if (!defined $searchtext) {
4939                 die_error(undef, "Text field empty");
4940         }
4941         if (!defined $hash) {
4942                 $hash = git_get_head_hash($project);
4943         }
4944         my %co = parse_commit($hash);
4945         if (!%co) {
4946                 die_error(undef, "Unknown commit object");
4947         }
4948         if (!defined $page) {
4949                 $page = 0;
4950         }
4951
4952         $searchtype ||= 'commit';
4953         if ($searchtype eq 'pickaxe') {
4954                 # pickaxe may take all resources of your box and run for several minutes
4955                 # with every query - so decide by yourself how public you make this feature
4956                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4957                 if (!$have_pickaxe) {
4958                         die_error('403 Permission denied', "Permission denied");
4959                 }
4960         }
4961         if ($searchtype eq 'grep') {
4962                 my ($have_grep) = gitweb_check_feature('grep');
4963                 if (!$have_grep) {
4964                         die_error('403 Permission denied', "Permission denied");
4965                 }
4966         }
4967
4968         git_header_html();
4969
4970         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4971                 my $greptype;
4972                 if ($searchtype eq 'commit') {
4973                         $greptype = "--grep=";
4974                 } elsif ($searchtype eq 'author') {
4975                         $greptype = "--author=";
4976                 } elsif ($searchtype eq 'committer') {
4977                         $greptype = "--committer=";
4978                 }
4979                 $greptype .= $search_regexp;
4980                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4981
4982                 my $paging_nav = '';
4983                 if ($page > 0) {
4984                         $paging_nav .=
4985                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4986                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4987                                         "first");
4988                         $paging_nav .= " &sdot; " .
4989                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4990                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4991                                                        page=>$page-1),
4992                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4993                 } else {
4994                         $paging_nav .= "first";
4995                         $paging_nav .= " &sdot; prev";
4996                 }
4997                 if ($#commitlist >= 100) {
4998                         $paging_nav .= " &sdot; " .
4999                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5000                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5001                                                        page=>$page+1),
5002                                          -accesskey => "n", -title => "Alt-n"}, "next");
5003                 } else {
5004                         $paging_nav .= " &sdot; next";
5005                 }
5006                 my $next_link = '';
5007                 if ($#commitlist >= 100) {
5008                         $next_link =
5009                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5010                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5011                                                        page=>$page+1),
5012                                          -accesskey => "n", -title => "Alt-n"}, "next");
5013                 }
5014
5015                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5016                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5017                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5018         }
5019
5020         if ($searchtype eq 'pickaxe') {
5021                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5022                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5023
5024                 print "<table cellspacing=\"0\">\n";
5025                 my $alternate = 1;
5026                 $/ = "\n";
5027                 my $git_command = git_cmd_str();
5028                 my $searchqtext = $searchtext;
5029                 $searchqtext =~ s/'/'\\''/;
5030                 open my $fd, "-|", "$git_command rev-list $hash | " .
5031                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5032                 undef %co;
5033                 my @files;
5034                 while (my $line = <$fd>) {
5035                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5036                                 my %set;
5037                                 $set{'file'} = $6;
5038                                 $set{'from_id'} = $3;
5039                                 $set{'to_id'} = $4;
5040                                 $set{'id'} = $set{'to_id'};
5041                                 if ($set{'id'} =~ m/0{40}/) {
5042                                         $set{'id'} = $set{'from_id'};
5043                                 }
5044                                 if ($set{'id'} =~ m/0{40}/) {
5045                                         next;
5046                                 }
5047                                 push @files, \%set;
5048                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5049                                 if (%co) {
5050                                         if ($alternate) {
5051                                                 print "<tr class=\"dark\">\n";
5052                                         } else {
5053                                                 print "<tr class=\"light\">\n";
5054                                         }
5055                                         $alternate ^= 1;
5056                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5057                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5058                                               "<td>" .
5059                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5060                                                       -class => "list subject"},
5061                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5062                                         while (my $setref = shift @files) {
5063                                                 my %set = %$setref;
5064                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5065                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5066                                                               -class => "list"},
5067                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5068                                                       "<br/>\n";
5069                                         }
5070                                         print "</td>\n" .
5071                                               "<td class=\"link\">" .
5072                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5073                                               " | " .
5074                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5075                                         print "</td>\n" .
5076                                               "</tr>\n";
5077                                 }
5078                                 %co = parse_commit($1);
5079                         }
5080                 }
5081                 close $fd;
5082
5083                 print "</table>\n";
5084         }
5085
5086         if ($searchtype eq 'grep') {
5087                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5088                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5089
5090                 print "<table cellspacing=\"0\">\n";
5091                 my $alternate = 1;
5092                 my $matches = 0;
5093                 $/ = "\n";
5094                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5095                 my $lastfile = '';
5096                 while (my $line = <$fd>) {
5097                         chomp $line;
5098                         my ($file, $lno, $ltext, $binary);
5099                         last if ($matches++ > 1000);
5100                         if ($line =~ /^Binary file (.+) matches$/) {
5101                                 $file = $1;
5102                                 $binary = 1;
5103                         } else {
5104                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5105                         }
5106                         if ($file ne $lastfile) {
5107                                 $lastfile and print "</td></tr>\n";
5108                                 if ($alternate++) {
5109                                         print "<tr class=\"dark\">\n";
5110                                 } else {
5111                                         print "<tr class=\"light\">\n";
5112                                 }
5113                                 print "<td class=\"list\">".
5114                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5115                                                                file_name=>"$file"),
5116                                                 -class => "list"}, esc_path($file));
5117                                 print "</td><td>\n";
5118                                 $lastfile = $file;
5119                         }
5120                         if ($binary) {
5121                                 print "<div class=\"binary\">Binary file</div>\n";
5122                         } else {
5123                                 $ltext = untabify($ltext);
5124                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5125                                         $ltext = esc_html($1, -nbsp=>1);
5126                                         $ltext .= '<span class="match">';
5127                                         $ltext .= esc_html($2, -nbsp=>1);
5128                                         $ltext .= '</span>';
5129                                         $ltext .= esc_html($3, -nbsp=>1);
5130                                 } else {
5131                                         $ltext = esc_html($ltext, -nbsp=>1);
5132                                 }
5133                                 print "<div class=\"pre\">" .
5134                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5135                                                                file_name=>"$file").'#l'.$lno,
5136                                                 -class => "linenr"}, sprintf('%4i', $lno))
5137                                         . ' ' .  $ltext . "</div>\n";
5138                         }
5139                 }
5140                 if ($lastfile) {
5141                         print "</td></tr>\n";
5142                         if ($matches > 1000) {
5143                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5144                         }
5145                 } else {
5146                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5147                 }
5148                 close $fd;
5149
5150                 print "</table>\n";
5151         }
5152         git_footer_html();
5153 }
5154
5155 sub git_search_help {
5156         git_header_html();
5157         git_print_page_nav('','', $hash,$hash,$hash);
5158         print <<EOT;
5159 <dl>
5160 <dt><b>commit</b></dt>
5161 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5162 EOT
5163         my ($have_grep) = gitweb_check_feature('grep');
5164         if ($have_grep) {
5165                 print <<EOT;
5166 <dt><b>grep</b></dt>
5167 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5168     a different one) are searched for the given
5169 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5170 (POSIX extended) and the matches are listed. On large
5171 trees, this search can take a while and put some strain on the server, so please use it with
5172 some consideration.</dd>
5173 EOT
5174         }
5175         print <<EOT;
5176 <dt><b>author</b></dt>
5177 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5178 <dt><b>committer</b></dt>
5179 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5180 EOT
5181         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5182         if ($have_pickaxe) {
5183                 print <<EOT;
5184 <dt><b>pickaxe</b></dt>
5185 <dd>All commits that caused the string to appear or disappear from any file (changes that
5186 added, removed or "modified" the string) will be listed. This search can take a while and
5187 takes a lot of strain on the server, so please use it wisely.</dd>
5188 EOT
5189         }
5190         print "</dl>\n";
5191         git_footer_html();
5192 }
5193
5194 sub git_shortlog {
5195         my $head = git_get_head_hash($project);
5196         if (!defined $hash) {
5197                 $hash = $head;
5198         }
5199         if (!defined $page) {
5200                 $page = 0;
5201         }
5202         my $refs = git_get_references();
5203
5204         my @commitlist = parse_commits($hash, 101, (100 * $page));
5205
5206         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5207         my $next_link = '';
5208         if ($#commitlist >= 100) {
5209                 $next_link =
5210                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5211                                  -accesskey => "n", -title => "Alt-n"}, "next");
5212         }
5213
5214         git_header_html();
5215         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5216         git_print_header_div('summary', $project);
5217
5218         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5219
5220         git_footer_html();
5221 }
5222
5223 ## ......................................................................
5224 ## feeds (RSS, Atom; OPML)
5225
5226 sub git_feed {
5227         my $format = shift || 'atom';
5228         my ($have_blame) = gitweb_check_feature('blame');
5229
5230         # Atom: http://www.atomenabled.org/developers/syndication/
5231         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5232         if ($format ne 'rss' && $format ne 'atom') {
5233                 die_error(undef, "Unknown web feed format");
5234         }
5235
5236         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5237         my $head = $hash || 'HEAD';
5238         my @commitlist = parse_commits($head, 150);
5239
5240         my %latest_commit;
5241         my %latest_date;
5242         my $content_type = "application/$format+xml";
5243         if (defined $cgi->http('HTTP_ACCEPT') &&
5244                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5245                 # browser (feed reader) prefers text/xml
5246                 $content_type = 'text/xml';
5247         }
5248         if (defined($commitlist[0])) {
5249                 %latest_commit = %{$commitlist[0]};
5250                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5251                 print $cgi->header(
5252                         -type => $content_type,
5253                         -charset => 'utf-8',
5254                         -last_modified => $latest_date{'rfc2822'});
5255         } else {
5256                 print $cgi->header(
5257                         -type => $content_type,
5258                         -charset => 'utf-8');
5259         }
5260
5261         # Optimization: skip generating the body if client asks only
5262         # for Last-Modified date.
5263         return if ($cgi->request_method() eq 'HEAD');
5264
5265         # header variables
5266         my $title = "$site_name - $project/$action";
5267         my $feed_type = 'log';
5268         if (defined $hash) {
5269                 $title .= " - '$hash'";
5270                 $feed_type = 'branch log';
5271                 if (defined $file_name) {
5272                         $title .= " :: $file_name";
5273                         $feed_type = 'history';
5274                 }
5275         } elsif (defined $file_name) {
5276                 $title .= " - $file_name";
5277                 $feed_type = 'history';
5278         }
5279         $title .= " $feed_type";
5280         my $descr = git_get_project_description($project);
5281         if (defined $descr) {
5282                 $descr = esc_html($descr);
5283         } else {
5284                 $descr = "$project " .
5285                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5286                          " feed";
5287         }
5288         my $owner = git_get_project_owner($project);
5289         $owner = esc_html($owner);
5290
5291         #header
5292         my $alt_url;
5293         if (defined $file_name) {
5294                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5295         } elsif (defined $hash) {
5296                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5297         } else {
5298                 $alt_url = href(-full=>1, action=>"summary");
5299         }
5300         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5301         if ($format eq 'rss') {
5302                 print <<XML;
5303 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5304 <channel>
5305 XML
5306                 print "<title>$title</title>\n" .
5307                       "<link>$alt_url</link>\n" .
5308                       "<description>$descr</description>\n" .
5309                       "<language>en</language>\n";
5310         } elsif ($format eq 'atom') {
5311                 print <<XML;
5312 <feed xmlns="http://www.w3.org/2005/Atom">
5313 XML
5314                 print "<title>$title</title>\n" .
5315                       "<subtitle>$descr</subtitle>\n" .
5316                       '<link rel="alternate" type="text/html" href="' .
5317                       $alt_url . '" />' . "\n" .
5318                       '<link rel="self" type="' . $content_type . '" href="' .
5319                       $cgi->self_url() . '" />' . "\n" .
5320                       "<id>" . href(-full=>1) . "</id>\n" .
5321                       # use project owner for feed author
5322                       "<author><name>$owner</name></author>\n";
5323                 if (defined $favicon) {
5324                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5325                 }
5326                 if (defined $logo_url) {
5327                         # not twice as wide as tall: 72 x 27 pixels
5328                         print "<logo>" . esc_url($logo) . "</logo>\n";
5329                 }
5330                 if (! %latest_date) {
5331                         # dummy date to keep the feed valid until commits trickle in:
5332                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5333                 } else {
5334                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5335                 }
5336         }
5337
5338         # contents
5339         for (my $i = 0; $i <= $#commitlist; $i++) {
5340                 my %co = %{$commitlist[$i]};
5341                 my $commit = $co{'id'};
5342                 # we read 150, we always show 30 and the ones more recent than 48 hours
5343                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5344                         last;
5345                 }
5346                 my %cd = parse_date($co{'author_epoch'});
5347
5348                 # get list of changed files
5349                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5350                         $co{'parent'} || "--root",
5351                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5352                         or next;
5353                 my @difftree = map { chomp; $_ } <$fd>;
5354                 close $fd
5355                         or next;
5356
5357                 # print element (entry, item)
5358                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5359                 if ($format eq 'rss') {
5360                         print "<item>\n" .
5361                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5362                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5363                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5364                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5365                               "<link>$co_url</link>\n" .
5366                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5367                               "<content:encoded>" .
5368                               "<![CDATA[\n";
5369                 } elsif ($format eq 'atom') {
5370                         print "<entry>\n" .
5371                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5372                               "<updated>$cd{'iso-8601'}</updated>\n" .
5373                               "<author>\n" .
5374                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5375                         if ($co{'author_email'}) {
5376                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5377                         }
5378                         print "</author>\n" .
5379                               # use committer for contributor
5380                               "<contributor>\n" .
5381                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5382                         if ($co{'committer_email'}) {
5383                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5384                         }
5385                         print "</contributor>\n" .
5386                               "<published>$cd{'iso-8601'}</published>\n" .
5387                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5388                               "<id>$co_url</id>\n" .
5389                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5390                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5391                 }
5392                 my $comment = $co{'comment'};
5393                 print "<pre>\n";
5394                 foreach my $line (@$comment) {
5395                         $line = esc_html($line);
5396                         print "$line\n";
5397                 }
5398                 print "</pre><ul>\n";
5399                 foreach my $difftree_line (@difftree) {
5400                         my %difftree = parse_difftree_raw_line($difftree_line);
5401                         next if !$difftree{'from_id'};
5402
5403                         my $file = $difftree{'file'} || $difftree{'to_file'};
5404
5405                         print "<li>" .
5406                               "[" .
5407                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5408                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5409                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5410                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5411                                       -title => "diff"}, 'D');
5412                         if ($have_blame) {
5413                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5414                                                              file_name=>$file, hash_base=>$commit),
5415                                               -title => "blame"}, 'B');
5416                         }
5417                         # if this is not a feed of a file history
5418                         if (!defined $file_name || $file_name ne $file) {
5419                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5420                                                              file_name=>$file, hash=>$commit),
5421                                               -title => "history"}, 'H');
5422                         }
5423                         $file = esc_path($file);
5424                         print "] ".
5425                               "$file</li>\n";
5426                 }
5427                 if ($format eq 'rss') {
5428                         print "</ul>]]>\n" .
5429                               "</content:encoded>\n" .
5430                               "</item>\n";
5431                 } elsif ($format eq 'atom') {
5432                         print "</ul>\n</div>\n" .
5433                               "</content>\n" .
5434                               "</entry>\n";
5435                 }
5436         }
5437
5438         # end of feed
5439         if ($format eq 'rss') {
5440                 print "</channel>\n</rss>\n";
5441         }       elsif ($format eq 'atom') {
5442                 print "</feed>\n";
5443         }
5444 }
5445
5446 sub git_rss {
5447         git_feed('rss');
5448 }
5449
5450 sub git_atom {
5451         git_feed('atom');
5452 }
5453
5454 sub git_opml {
5455         my @list = git_get_projects_list();
5456
5457         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5458         print <<XML;
5459 <?xml version="1.0" encoding="utf-8"?>
5460 <opml version="1.0">
5461 <head>
5462   <title>$site_name OPML Export</title>
5463 </head>
5464 <body>
5465 <outline text="git RSS feeds">
5466 XML
5467
5468         foreach my $pr (@list) {
5469                 my %proj = %$pr;
5470                 my $head = git_get_head_hash($proj{'path'});
5471                 if (!defined $head) {
5472                         next;
5473                 }
5474                 $git_dir = "$projectroot/$proj{'path'}";
5475                 my %co = parse_commit($head);
5476                 if (!%co) {
5477                         next;
5478                 }
5479
5480                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5481                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5482                 my $html = "$my_url?p=$proj{'path'};a=summary";
5483                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5484         }
5485         print <<XML;
5486 </outline>
5487 </body>
5488 </opml>
5489 XML
5490 }