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