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 # rename detection options for git-diff and git-diff-tree
 109 # - default is '-M', with the cost proportional to
 110 #   (number of removed files) * (number of new files).
 111 # - more costly is '-C' (which implies '-M'), with the cost proportional to
 112 #   (number of changed files + number of removed files) * (number of new files)
 113 # - even more costly is '-C', '--find-copies-harder' with cost
 114 #   (number of files in the original tree) * (number of new files)
 115 # - one might want to include '-B' option, e.g. '-B', '-M'
 116 our @diff_opts = ('-M'); # taken from git_commit
 117
 118 # information about snapshot formats that gitweb is capable of serving
 119 our %known_snapshot_formats = (
 120         # name => {
 121         #       'display' => display name,
 122         #       'type' => mime type,
 123         #       'suffix' => filename suffix,
 124         #       'format' => --format for git-archive,
 125         #       'compressor' => [compressor command and arguments]
 126         #                       (array reference, optional)}
 127         #
 128         'tgz' => {
 129                 'display' => 'tar.gz',
 130                 'type' => 'application/x-gzip',
 131                 'suffix' => '.tar.gz',
 132                 'format' => 'tar',
 133                 'compressor' => ['gzip']},
 134
 135         'tbz2' => {
 136                 'display' => 'tar.bz2',
 137                 'type' => 'application/x-bzip2',
 138                 'suffix' => '.tar.bz2',
 139                 'format' => 'tar',
 140                 'compressor' => ['bzip2']},
 141
 142         'zip' => {
 143                 'display' => 'zip',
 144                 'type' => 'application/x-zip',
 145                 'suffix' => '.zip',
 146                 'format' => 'zip'},
 147 );
 148
 149 # Aliases so we understand old gitweb.snapshot values in repository
 150 # configuration.
 151 our %known_snapshot_format_aliases = (
 152         'gzip'  => 'tgz',
 153         'bzip2' => 'tbz2',
 154
 155         # backward compatibility: legacy gitweb config support
 156         'x-gzip' => undef, 'gz' => undef,
 157         'x-bzip2' => undef, 'bz2' => undef,
 158         'x-zip' => undef, '' => undef,
 159 );
 160
 161 # You define site-wide feature defaults here; override them with
 162 # $GITWEB_CONFIG as necessary.
 163 our %feature = (
 164         # feature => {
 165         #       'sub' => feature-sub (subroutine),
 166         #       'override' => allow-override (boolean),
 167         #       'default' => [ default options...] (array reference)}
 168         #
 169         # if feature is overridable (it means that allow-override has true value),
 170         # then feature-sub will be called with default options as parameters;
 171         # return value of feature-sub indicates if to enable specified feature
 172         #
 173         # if there is no 'sub' key (no feature-sub), then feature cannot be
 174         # overriden
 175         #
 176         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 177
 178         # Enable the 'blame' blob view, showing the last commit that modified
 179         # each line in the file. This can be very CPU-intensive.
 180
 181         # To enable system wide have in $GITWEB_CONFIG
 182         # $feature{'blame'}{'default'} = [1];
 183         # To have project specific config enable override in $GITWEB_CONFIG
 184         # $feature{'blame'}{'override'} = 1;
 185         # and in project config gitweb.blame = 0|1;
 186         'blame' => {
 187                 'sub' => \&feature_blame,
 188                 'override' => 0,
 189                 'default' => [0]},
 190
 191         # Enable the 'snapshot' link, providing a compressed archive of any
 192         # tree. This can potentially generate high traffic if you have large
 193         # project.
 194
 195         # Value is a list of formats defined in %known_snapshot_formats that
 196         # you wish to offer.
 197         # To disable system wide have in $GITWEB_CONFIG
 198         # $feature{'snapshot'}{'default'} = [];
 199         # To have project specific config enable override in $GITWEB_CONFIG
 200         # $feature{'snapshot'}{'override'} = 1;
 201         # and in project config, a comma-separated list of formats or "none"
 202         # to disable.  Example: gitweb.snapshot = tbz2,zip;
 203         'snapshot' => {
 204                 'sub' => \&feature_snapshot,
 205                 'override' => 0,
 206                 'default' => ['tgz']},
 207
 208         # Enable text search, which will list the commits which match author,
 209         # committer or commit text to a given string.  Enabled by default.
 210         # Project specific override is not supported.
 211         'search' => {
 212                 'override' => 0,
 213                 'default' => [1]},
 214
 215         # Enable grep search, which will list the files in currently selected
 216         # tree containing the given string. Enabled by default. This can be
 217         # potentially CPU-intensive, of course.
 218
 219         # To enable system wide have in $GITWEB_CONFIG
 220         # $feature{'grep'}{'default'} = [1];
 221         # To have project specific config enable override in $GITWEB_CONFIG
 222         # $feature{'grep'}{'override'} = 1;
 223         # and in project config gitweb.grep = 0|1;
 224         'grep' => {
 225                 'override' => 0,
 226                 'default' => [1]},
 227
 228         # Enable the pickaxe search, which will list the commits that modified
 229         # a given string in a file. This can be practical and quite faster
 230         # alternative to 'blame', but still potentially CPU-intensive.
 231
 232         # To enable system wide have in $GITWEB_CONFIG
 233         # $feature{'pickaxe'}{'default'} = [1];
 234         # To have project specific config enable override in $GITWEB_CONFIG
 235         # $feature{'pickaxe'}{'override'} = 1;
 236         # and in project config gitweb.pickaxe = 0|1;
 237         'pickaxe' => {
 238                 'sub' => \&feature_pickaxe,
 239                 'override' => 0,
 240                 'default' => [1]},
 241
 242         # Make gitweb use an alternative format of the URLs which can be
 243         # more readable and natural-looking: project name is embedded
 244         # directly in the path and the query string contains other
 245         # auxiliary information. All gitweb installations recognize
 246         # URL in either format; this configures in which formats gitweb
 247         # generates links.
 248
 249         # To enable system wide have in $GITWEB_CONFIG
 250         # $feature{'pathinfo'}{'default'} = [1];
 251         # Project specific override is not supported.
 252
 253         # Note that you will need to change the default location of CSS,
 254         # favicon, logo and possibly other files to an absolute URL. Also,
 255         # if gitweb.cgi serves as your indexfile, you will need to force
 256         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 257         'pathinfo' => {
 258                 'override' => 0,
 259                 'default' => [0]},
 260
 261         # Make gitweb consider projects in project root subdirectories
 262         # to be forks of existing projects. Given project $projname.git,
 263         # projects matching $projname/*.git will not be shown in the main
 264         # projects list, instead a '+' mark will be added to $projname
 265         # there and a 'forks' view will be enabled for the project, listing
 266         # all the forks. If project list is taken from a file, forks have
 267         # to be listed after the main project.
 268
 269         # To enable system wide have in $GITWEB_CONFIG
 270         # $feature{'forks'}{'default'} = [1];
 271         # Project specific override is not supported.
 272         'forks' => {
 273                 'override' => 0,
 274                 'default' => [0]},
 275 );
 276
 277 sub gitweb_check_feature {
 278         my ($name) = @_;
 279         return unless exists $feature{$name};
 280         my ($sub, $override, @defaults) = (
 281                 $feature{$name}{'sub'},
 282                 $feature{$name}{'override'},
 283                 @{$feature{$name}{'default'}});
 284         if (!$override) { return @defaults; }
 285         if (!defined $sub) {
 286                 warn "feature $name is not overrideable";
 287                 return @defaults;
 288         }
 289         return $sub->(@defaults);
 290 }
 291
 292 sub feature_blame {
 293         my ($val) = git_get_project_config('blame', '--bool');
 294
 295         if ($val eq 'true') {
 296                 return 1;
 297         } elsif ($val eq 'false') {
 298                 return 0;
 299         }
 300
 301         return $_[0];
 302 }
 303
 304 sub feature_snapshot {
 305         my (@fmts) = @_;
 306
 307         my ($val) = git_get_project_config('snapshot');
 308
 309         if ($val) {
 310                 @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 311         }
 312
 313         return @fmts;
 314 }
 315
 316 sub feature_grep {
 317         my ($val) = git_get_project_config('grep', '--bool');
 318
 319         if ($val eq 'true') {
 320                 return (1);
 321         } elsif ($val eq 'false') {
 322                 return (0);
 323         }
 324
 325         return ($_[0]);
 326 }
 327
 328 sub feature_pickaxe {
 329         my ($val) = git_get_project_config('pickaxe', '--bool');
 330
 331         if ($val eq 'true') {
 332                 return (1);
 333         } elsif ($val eq 'false') {
 334                 return (0);
 335         }
 336
 337         return ($_[0]);
 338 }
 339
 340 # checking HEAD file with -e is fragile if the repository was
 341 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 342 # and then pruned.
 343 sub check_head_link {
 344         my ($dir) = @_;
 345         my $headfile = "$dir/HEAD";
 346         return ((-e $headfile) ||
 347                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 348 }
 349
 350 sub check_export_ok {
 351         my ($dir) = @_;
 352         return (check_head_link($dir) &&
 353                 (!$export_ok || -e "$dir/$export_ok"));
 354 }
 355
 356 # process alternate names for backward compatibility
 357 # filter out unsupported (unknown) snapshot formats
 358 sub filter_snapshot_fmts {
 359         my @fmts = @_;
 360
 361         @fmts = map {
 362                 exists $known_snapshot_format_aliases{$_} ?
 363                        $known_snapshot_format_aliases{$_} : $_} @fmts;
 364         @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 365
 366 }
 367
 368 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 369 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 370
 371 # version of the core git binary
 372 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 373
 374 $projects_list ||= $projectroot;
 375
 376 # ======================================================================
 377 # input validation and dispatch
 378 our $action = $cgi->param('a');
 379 if (defined $action) {
 380         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 381                 die_error(undef, "Invalid action parameter");
 382         }
 383 }
 384
 385 # parameters which are pathnames
 386 our $project = $cgi->param('p');
 387 if (defined $project) {
 388         if (!validate_pathname($project) ||
 389             !(-d "$projectroot/$project") ||
 390             !check_head_link("$projectroot/$project") ||
 391             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 392             ($strict_export && !project_in_list($project))) {
 393                 undef $project;
 394                 die_error(undef, "No such project");
 395         }
 396 }
 397
 398 our $file_name = $cgi->param('f');
 399 if (defined $file_name) {
 400         if (!validate_pathname($file_name)) {
 401                 die_error(undef, "Invalid file parameter");
 402         }
 403 }
 404
 405 our $file_parent = $cgi->param('fp');
 406 if (defined $file_parent) {
 407         if (!validate_pathname($file_parent)) {
 408                 die_error(undef, "Invalid file parent parameter");
 409         }
 410 }
 411
 412 # parameters which are refnames
 413 our $hash = $cgi->param('h');
 414 if (defined $hash) {
 415         if (!validate_refname($hash)) {
 416                 die_error(undef, "Invalid hash parameter");
 417         }
 418 }
 419
 420 our $hash_parent = $cgi->param('hp');
 421 if (defined $hash_parent) {
 422         if (!validate_refname($hash_parent)) {
 423                 die_error(undef, "Invalid hash parent parameter");
 424         }
 425 }
 426
 427 our $hash_base = $cgi->param('hb');
 428 if (defined $hash_base) {
 429         if (!validate_refname($hash_base)) {
 430                 die_error(undef, "Invalid hash base parameter");
 431         }
 432 }
 433
 434 my %allowed_options = (
 435         "--no-merges" => [ qw(rss atom log shortlog history) ],
 436 );
 437
 438 our @extra_options = $cgi->param('opt');
 439 if (defined @extra_options) {
 440         foreach my $opt (@extra_options) {
 441                 if (not exists $allowed_options{$opt}) {
 442                         die_error(undef, "Invalid option parameter");
 443                 }
 444                 if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 445                         die_error(undef, "Invalid option parameter for this action");
 446                 }
 447         }
 448 }
 449
 450 our $hash_parent_base = $cgi->param('hpb');
 451 if (defined $hash_parent_base) {
 452         if (!validate_refname($hash_parent_base)) {
 453                 die_error(undef, "Invalid hash parent base parameter");
 454         }
 455 }
 456
 457 # other parameters
 458 our $page = $cgi->param('pg');
 459 if (defined $page) {
 460         if ($page =~ m/[^0-9]/) {
 461                 die_error(undef, "Invalid page parameter");
 462         }
 463 }
 464
 465 our $searchtype = $cgi->param('st');
 466 if (defined $searchtype) {
 467         if ($searchtype =~ m/[^a-z]/) {
 468                 die_error(undef, "Invalid searchtype parameter");
 469         }
 470 }
 471
 472 our $searchtext = $cgi->param('s');
 473 our $search_regexp;
 474 if (defined $searchtext) {
 475         if (length($searchtext) < 2) {
 476                 die_error(undef, "At least two characters are required for search parameter");
 477         }
 478         $search_regexp = quotemeta $searchtext;
 479 }
 480
 481 # now read PATH_INFO and use it as alternative to parameters
 482 sub evaluate_path_info {
 483         return if defined $project;
 484         my $path_info = $ENV{"PATH_INFO"};
 485         return if !$path_info;
 486         $path_info =~ s,^/+,,;
 487         return if !$path_info;
 488         # find which part of PATH_INFO is project
 489         $project = $path_info;
 490         $project =~ s,/+$,,;
 491         while ($project && !check_head_link("$projectroot/$project")) {
 492                 $project =~ s,/*[^/]*$,,;
 493         }
 494         # validate project
 495         $project = validate_pathname($project);
 496         if (!$project ||
 497             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 498             ($strict_export && !project_in_list($project))) {
 499                 undef $project;
 500                 return;
 501         }
 502         # do not change any parameters if an action is given using the query string
 503         return if $action;
 504         $path_info =~ s,^$project/*,,;
 505         my ($refname, $pathname) = split(/:/, $path_info, 2);
 506         if (defined $pathname) {
 507                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 508                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 509                 $pathname =~ s,^/+,,;
 510                 if (!$pathname || substr($pathname, -1) eq "/") {
 511                         $action  ||= "tree";
 512                         $pathname =~ s,/$,,;
 513                 } else {
 514                         $action  ||= "blob_plain";
 515                 }
 516                 $hash_base ||= validate_refname($refname);
 517                 $file_name ||= validate_pathname($pathname);
 518         } elsif (defined $refname) {
 519                 # we got "project.git/branch"
 520                 $action ||= "shortlog";
 521                 $hash   ||= validate_refname($refname);
 522         }
 523 }
 524 evaluate_path_info();
 525
 526 # path to the current git repository
 527 our $git_dir;
 528 $git_dir = "$projectroot/$project" if $project;
 529
 530 # dispatch
 531 my %actions = (
 532         "blame" => \&git_blame2,
 533         "blobdiff" => \&git_blobdiff,
 534         "blobdiff_plain" => \&git_blobdiff_plain,
 535         "blob" => \&git_blob,
 536         "blob_plain" => \&git_blob_plain,
 537         "commitdiff" => \&git_commitdiff,
 538         "commitdiff_plain" => \&git_commitdiff_plain,
 539         "commit" => \&git_commit,
 540         "forks" => \&git_forks,
 541         "heads" => \&git_heads,
 542         "history" => \&git_history,
 543         "log" => \&git_log,
 544         "rss" => \&git_rss,
 545         "atom" => \&git_atom,
 546         "search" => \&git_search,
 547         "search_help" => \&git_search_help,
 548         "shortlog" => \&git_shortlog,
 549         "summary" => \&git_summary,
 550         "tag" => \&git_tag,
 551         "tags" => \&git_tags,
 552         "tree" => \&git_tree,
 553         "snapshot" => \&git_snapshot,
 554         "object" => \&git_object,
 555         # those below don't need $project
 556         "opml" => \&git_opml,
 557         "project_list" => \&git_project_list,
 558         "project_index" => \&git_project_index,
 559 );
 560
 561 if (!defined $action) {
 562         if (defined $hash) {
 563                 $action = git_get_type($hash);
 564         } elsif (defined $hash_base && defined $file_name) {
 565                 $action = git_get_type("$hash_base:$file_name");
 566         } elsif (defined $project) {
 567                 $action = 'summary';
 568         } else {
 569                 $action = 'project_list';
 570         }
 571 }
 572 if (!defined($actions{$action})) {
 573         die_error(undef, "Unknown action");
 574 }
 575 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 576     !$project) {
 577         die_error(undef, "Project needed");
 578 }
 579 $actions{$action}->();
 580 exit;
 581
 582 ## ======================================================================
 583 ## action links
 584
 585 sub href(%) {
 586         my %params = @_;
 587         # default is to use -absolute url() i.e. $my_uri
 588         my $href = $params{-full} ? $my_url : $my_uri;
 589
 590         # XXX: Warning: If you touch this, check the search form for updating,
 591         # too.
 592
 593         my @mapping = (
 594                 project => "p",
 595                 action => "a",
 596                 file_name => "f",
 597                 file_parent => "fp",
 598                 hash => "h",
 599                 hash_parent => "hp",
 600                 hash_base => "hb",
 601                 hash_parent_base => "hpb",
 602                 page => "pg",
 603                 order => "o",
 604                 searchtext => "s",
 605                 searchtype => "st",
 606                 snapshot_format => "sf",
 607                 extra_options => "opt",
 608         );
 609         my %mapping = @mapping;
 610
 611         $params{'project'} = $project unless exists $params{'project'};
 612
 613         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 614         if ($use_pathinfo) {
 615                 # use PATH_INFO for project name
 616                 $href .= "/$params{'project'}" if defined $params{'project'};
 617                 delete $params{'project'};
 618
 619                 # Summary just uses the project path URL
 620                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 621                         delete $params{'action'};
 622                 }
 623         }
 624
 625         # now encode the parameters explicitly
 626         my @result = ();
 627         for (my $i = 0; $i < @mapping; $i += 2) {
 628                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 629                 if (defined $params{$name}) {
 630                         if (ref($params{$name}) eq "ARRAY") {
 631                                 foreach my $par (@{$params{$name}}) {
 632                                         push @result, $symbol . "=" . esc_param($par);
 633                                 }
 634                         } else {
 635                                 push @result, $symbol . "=" . esc_param($params{$name});
 636                         }
 637                 }
 638         }
 639         $href .= "?" . join(';', @result) if scalar @result;
 640
 641         return $href;
 642 }
 643
 644
 645 ## ======================================================================
 646 ## validation, quoting/unquoting and escaping
 647
 648 sub validate_pathname {
 649         my $input = shift || return undef;
 650
 651         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 652         # at the beginning, at the end, and between slashes.
 653         # also this catches doubled slashes
 654         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 655                 return undef;
 656         }
 657         # no null characters
 658         if ($input =~ m!\0!) {
 659                 return undef;
 660         }
 661         return $input;
 662 }
 663
 664 sub validate_refname {
 665         my $input = shift || return undef;
 666
 667         # textual hashes are O.K.
 668         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 669                 return $input;
 670         }
 671         # it must be correct pathname
 672         $input = validate_pathname($input)
 673                 or return undef;
 674         # restrictions on ref name according to git-check-ref-format
 675         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 676                 return undef;
 677         }
 678         return $input;
 679 }
 680
 681 # decode sequences of octets in utf8 into Perl's internal form,
 682 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 683 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 684 sub to_utf8 {
 685         my $str = shift;
 686         my $res;
 687         eval { $res = decode_utf8($str, Encode::FB_CROAK); };
 688         if (defined $res) {
 689                 return $res;
 690         } else {
 691                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 692         }
 693 }
 694
 695 # quote unsafe chars, but keep the slash, even when it's not
 696 # correct, but quoted slashes look too horrible in bookmarks
 697 sub esc_param {
 698         my $str = shift;
 699         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 700         $str =~ s/\+/%2B/g;
 701         $str =~ s/ /\+/g;
 702         return $str;
 703 }
 704
 705 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 706 sub esc_url {
 707         my $str = shift;
 708         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 709         $str =~ s/\+/%2B/g;
 710         $str =~ s/ /\+/g;
 711         return $str;
 712 }
 713
 714 # replace invalid utf8 character with SUBSTITUTION sequence
 715 sub esc_html ($;%) {
 716         my $str = shift;
 717         my %opts = @_;
 718
 719         $str = to_utf8($str);
 720         $str = $cgi->escapeHTML($str);
 721         if ($opts{'-nbsp'}) {
 722                 $str =~ s/ /&nbsp;/g;
 723         }
 724         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 725         return $str;
 726 }
 727
 728 # quote control characters and escape filename to HTML
 729 sub esc_path {
 730         my $str = shift;
 731         my %opts = @_;
 732
 733         $str = to_utf8($str);
 734         $str = $cgi->escapeHTML($str);
 735         if ($opts{'-nbsp'}) {
 736                 $str =~ s/ /&nbsp;/g;
 737         }
 738         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 739         return $str;
 740 }
 741
 742 # Make control characters "printable", using character escape codes (CEC)
 743 sub quot_cec {
 744         my $cntrl = shift;
 745         my %es = ( # character escape codes, aka escape sequences
 746                    "\t" => '\t',   # tab            (HT)
 747                    "\n" => '\n',   # line feed      (LF)
 748                    "\r" => '\r',   # carrige return (CR)
 749                    "\f" => '\f',   # form feed      (FF)
 750                    "\b" => '\b',   # backspace      (BS)
 751                    "\a" => '\a',   # alarm (bell)   (BEL)
 752                    "\e" => '\e',   # escape         (ESC)
 753                    "\013" => '\v', # vertical tab   (VT)
 754                    "\000" => '\0', # nul character  (NUL)
 755                    );
 756         my $chr = ( (exists $es{$cntrl})
 757                     ? $es{$cntrl}
 758                     : sprintf('\%03o', ord($cntrl)) );
 759         return "<span class=\"cntrl\">$chr</span>";
 760 }
 761
 762 # Alternatively use unicode control pictures codepoints,
 763 # Unicode "printable representation" (PR)
 764 sub quot_upr {
 765         my $cntrl = shift;
 766         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 767         return "<span class=\"cntrl\">$chr</span>";
 768 }
 769
 770 # git may return quoted and escaped filenames
 771 sub unquote {
 772         my $str = shift;
 773
 774         sub unq {
 775                 my $seq = shift;
 776                 my %es = ( # character escape codes, aka escape sequences
 777                         't' => "\t",   # tab            (HT, TAB)
 778                         'n' => "\n",   # newline        (NL)
 779                         'r' => "\r",   # return         (CR)
 780                         'f' => "\f",   # form feed      (FF)
 781                         'b' => "\b",   # backspace      (BS)
 782                         'a' => "\a",   # alarm (bell)   (BEL)
 783                         'e' => "\e",   # escape         (ESC)
 784                         'v' => "\013", # vertical tab   (VT)
 785                 );
 786
 787                 if ($seq =~ m/^[0-7]{1,3}$/) {
 788                         # octal char sequence
 789                         return chr(oct($seq));
 790                 } elsif (exists $es{$seq}) {
 791                         # C escape sequence, aka character escape code
 792                         return $es{$seq}
 793                 }
 794                 # quoted ordinary character
 795                 return $seq;
 796         }
 797
 798         if ($str =~ m/^"(.*)"$/) {
 799                 # needs unquoting
 800                 $str = $1;
 801                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 802         }
 803         return $str;
 804 }
 805
 806 # escape tabs (convert tabs to spaces)
 807 sub untabify {
 808         my $line = shift;
 809
 810         while ((my $pos = index($line, "\t")) != -1) {
 811                 if (my $count = (8 - ($pos % 8))) {
 812                         my $spaces = ' ' x $count;
 813                         $line =~ s/\t/$spaces/;
 814                 }
 815         }
 816
 817         return $line;
 818 }
 819
 820 sub project_in_list {
 821         my $project = shift;
 822         my @list = git_get_projects_list();
 823         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 824 }
 825
 826 ## ----------------------------------------------------------------------
 827 ## HTML aware string manipulation
 828
 829 sub chop_str {
 830         my $str = shift;
 831         my $len = shift;
 832         my $add_len = shift || 10;
 833
 834         # allow only $len chars, but don't cut a word if it would fit in $add_len
 835         # if it doesn't fit, cut it if it's still longer than the dots we would add
 836         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 837         my $body = $1;
 838         my $tail = $2;
 839         if (length($tail) > 4) {
 840                 $tail = " ...";
 841                 $body =~ s/&[^;]*$//; # remove chopped character entities
 842         }
 843         return "$body$tail";
 844 }
 845
 846 ## ----------------------------------------------------------------------
 847 ## functions returning short strings
 848
 849 # CSS class for given age value (in seconds)
 850 sub age_class {
 851         my $age = shift;
 852
 853         if (!defined $age) {
 854                 return "noage";
 855         } elsif ($age < 60*60*2) {
 856                 return "age0";
 857         } elsif ($age < 60*60*24*2) {
 858                 return "age1";
 859         } else {
 860                 return "age2";
 861         }
 862 }
 863
 864 # convert age in seconds to "nn units ago" string
 865 sub age_string {
 866         my $age = shift;
 867         my $age_str;
 868
 869         if ($age > 60*60*24*365*2) {
 870                 $age_str = (int $age/60/60/24/365);
 871                 $age_str .= " years ago";
 872         } elsif ($age > 60*60*24*(365/12)*2) {
 873                 $age_str = int $age/60/60/24/(365/12);
 874                 $age_str .= " months ago";
 875         } elsif ($age > 60*60*24*7*2) {
 876                 $age_str = int $age/60/60/24/7;
 877                 $age_str .= " weeks ago";
 878         } elsif ($age > 60*60*24*2) {
 879                 $age_str = int $age/60/60/24;
 880                 $age_str .= " days ago";
 881         } elsif ($age > 60*60*2) {
 882                 $age_str = int $age/60/60;
 883                 $age_str .= " hours ago";
 884         } elsif ($age > 60*2) {
 885                 $age_str = int $age/60;
 886                 $age_str .= " min ago";
 887         } elsif ($age > 2) {
 888                 $age_str = int $age;
 889                 $age_str .= " sec ago";
 890         } else {
 891                 $age_str .= " right now";
 892         }
 893         return $age_str;
 894 }
 895
 896 use constant {
 897         S_IFINVALID => 0030000,
 898         S_IFGITLINK => 0160000,
 899 };
 900
 901 # submodule/subproject, a commit object reference
 902 sub S_ISGITLINK($) {
 903         my $mode = shift;
 904
 905         return (($mode & S_IFMT) == S_IFGITLINK)
 906 }
 907
 908 # convert file mode in octal to symbolic file mode string
 909 sub mode_str {
 910         my $mode = oct shift;
 911
 912         if (S_ISGITLINK($mode)) {
 913                 return 'm---------';
 914         } elsif (S_ISDIR($mode & S_IFMT)) {
 915                 return 'drwxr-xr-x';
 916         } elsif (S_ISLNK($mode)) {
 917                 return 'lrwxrwxrwx';
 918         } elsif (S_ISREG($mode)) {
 919                 # git cares only about the executable bit
 920                 if ($mode & S_IXUSR) {
 921                         return '-rwxr-xr-x';
 922                 } else {
 923                         return '-rw-r--r--';
 924                 };
 925         } else {
 926                 return '----------';
 927         }
 928 }
 929
 930 # convert file mode in octal to file type string
 931 sub file_type {
 932         my $mode = shift;
 933
 934         if ($mode !~ m/^[0-7]+$/) {
 935                 return $mode;
 936         } else {
 937                 $mode = oct $mode;
 938         }
 939
 940         if (S_ISGITLINK($mode)) {
 941                 return "submodule";
 942         } elsif (S_ISDIR($mode & S_IFMT)) {
 943                 return "directory";
 944         } elsif (S_ISLNK($mode)) {
 945                 return "symlink";
 946         } elsif (S_ISREG($mode)) {
 947                 return "file";
 948         } else {
 949                 return "unknown";
 950         }
 951 }
 952
 953 # convert file mode in octal to file type description string
 954 sub file_type_long {
 955         my $mode = shift;
 956
 957         if ($mode !~ m/^[0-7]+$/) {
 958                 return $mode;
 959         } else {
 960                 $mode = oct $mode;
 961         }
 962
 963         if (S_ISGITLINK($mode)) {
 964                 return "submodule";
 965         } elsif (S_ISDIR($mode & S_IFMT)) {
 966                 return "directory";
 967         } elsif (S_ISLNK($mode)) {
 968                 return "symlink";
 969         } elsif (S_ISREG($mode)) {
 970                 if ($mode & S_IXUSR) {
 971                         return "executable";
 972                 } else {
 973                         return "file";
 974                 };
 975         } else {
 976                 return "unknown";
 977         }
 978 }
 979
 980
 981 ## ----------------------------------------------------------------------
 982 ## functions returning short HTML fragments, or transforming HTML fragments
 983 ## which don't belong to other sections
 984
 985 # format line of commit message.
 986 sub format_log_line_html {
 987         my $line = shift;
 988
 989         $line = esc_html($line, -nbsp=>1);
 990         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 991                 my $hash_text = $1;
 992                 my $link =
 993                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 994                                 -class => "text"}, $hash_text);
 995                 $line =~ s/$hash_text/$link/;
 996         }
 997         return $line;
 998 }
 999
1000 # format marker of refs pointing to given object
1001 sub format_ref_marker {
1002         my ($refs, $id) = @_;
1003         my $markers = '';
1004
1005         if (defined $refs->{$id}) {
1006                 foreach my $ref (@{$refs->{$id}}) {
1007                         my ($type, $name) = qw();
1008                         # e.g. tags/v2.6.11 or heads/next
1009                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
1010                                 $type = $1;
1011                                 $name = $2;
1012                         } else {
1013                                 $type = "ref";
1014                                 $name = $ref;
1015                         }
1016
1017                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
1018                                     esc_html($name) . "</span>";
1019                 }
1020         }
1021
1022         if ($markers) {
1023                 return ' <span class="refs">'. $markers . '</span>';
1024         } else {
1025                 return "";
1026         }
1027 }
1028
1029 # format, perhaps shortened and with markers, title line
1030 sub format_subject_html {
1031         my ($long, $short, $href, $extra) = @_;
1032         $extra = '' unless defined($extra);
1033
1034         if (length($short) < length($long)) {
1035                 return $cgi->a({-href => $href, -class => "list subject",
1036                                 -title => to_utf8($long)},
1037                        esc_html($short) . $extra);
1038         } else {
1039                 return $cgi->a({-href => $href, -class => "list subject"},
1040                        esc_html($long)  . $extra);
1041         }
1042 }
1043
1044 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
1045 sub format_git_diff_header_line {
1046         my $line = shift;
1047         my $diffinfo = shift;
1048         my ($from, $to) = @_;
1049
1050         if ($diffinfo->{'nparents'}) {
1051                 # combined diff
1052                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
1053                 if ($to->{'href'}) {
1054                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1055                                          esc_path($to->{'file'}));
1056                 } else { # file was deleted (no href)
1057                         $line .= esc_path($to->{'file'});
1058                 }
1059         } else {
1060                 # "ordinary" diff
1061                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1062                 if ($from->{'href'}) {
1063                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1064                                          'a/' . esc_path($from->{'file'}));
1065                 } else { # file was added (no href)
1066                         $line .= 'a/' . esc_path($from->{'file'});
1067                 }
1068                 $line .= ' ';
1069                 if ($to->{'href'}) {
1070                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1071                                          'b/' . esc_path($to->{'file'}));
1072                 } else { # file was deleted
1073                         $line .= 'b/' . esc_path($to->{'file'});
1074                 }
1075         }
1076
1077         return "<div class=\"diff header\">$line</div>\n";
1078 }
1079
1080 # format extended diff header line, before patch itself
1081 sub format_extended_diff_header_line {
1082         my $line = shift;
1083         my $diffinfo = shift;
1084         my ($from, $to) = @_;
1085
1086         # match <path>
1087         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1088                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1089                                        esc_path($from->{'file'}));
1090         }
1091         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1092                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1093                                  esc_path($to->{'file'}));
1094         }
1095         # match single <mode>
1096         if ($line =~ m/\s(\d{6})$/) {
1097                 $line .= '<span class="info"> (' .
1098                          file_type_long($1) .
1099                          ')</span>';
1100         }
1101         # match <hash>
1102         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1103                 # can match only for combined diff
1104                 $line = 'index ';
1105                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1106                         if ($from->{'href'}[$i]) {
1107                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1108                                                   -class=>"hash"},
1109                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1110                         } else {
1111                                 $line .= '0' x 7;
1112                         }
1113                         # separator
1114                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1115                 }
1116                 $line .= '..';
1117                 if ($to->{'href'}) {
1118                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1119                                          substr($diffinfo->{'to_id'},0,7));
1120                 } else {
1121                         $line .= '0' x 7;
1122                 }
1123
1124         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1125                 # can match only for ordinary diff
1126                 my ($from_link, $to_link);
1127                 if ($from->{'href'}) {
1128                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1129                                              substr($diffinfo->{'from_id'},0,7));
1130                 } else {
1131                         $from_link = '0' x 7;
1132                 }
1133                 if ($to->{'href'}) {
1134                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1135                                            substr($diffinfo->{'to_id'},0,7));
1136                 } else {
1137                         $to_link = '0' x 7;
1138                 }
1139                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1140                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1141         }
1142
1143         return $line . "<br/>\n";
1144 }
1145
1146 # format from-file/to-file diff header
1147 sub format_diff_from_to_header {
1148         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1149         my $line;
1150         my $result = '';
1151
1152         $line = $from_line;
1153         #assert($line =~ m/^---/) if DEBUG;
1154         # no extra formatting for "^--- /dev/null"
1155         if (! $diffinfo->{'nparents'}) {
1156                 # ordinary (single parent) diff
1157                 if ($line =~ m!^--- "?a/!) {
1158                         if ($from->{'href'}) {
1159                                 $line = '--- a/' .
1160                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1161                                                 esc_path($from->{'file'}));
1162                         } else {
1163                                 $line = '--- a/' .
1164                                         esc_path($from->{'file'});
1165                         }
1166                 }
1167                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1168
1169         } else {
1170                 # combined diff (merge commit)
1171                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1172                         if ($from->{'href'}[$i]) {
1173                                 $line = '--- ' .
1174                                         $cgi->a({-href=>href(action=>"blobdiff",
1175                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1176                                                              hash_parent_base=>$parents[$i],
1177                                                              file_parent=>$from->{'file'}[$i],
1178                                                              hash=>$diffinfo->{'to_id'},
1179                                                              hash_base=>$hash,
1180                                                              file_name=>$to->{'file'}),
1181                                                  -class=>"path",
1182                                                  -title=>"diff" . ($i+1)},
1183                                                 $i+1) .
1184                                         '/' .
1185                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1186                                                 esc_path($from->{'file'}[$i]));
1187                         } else {
1188                                 $line = '--- /dev/null';
1189                         }
1190                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1191                 }
1192         }
1193
1194         $line = $to_line;
1195         #assert($line =~ m/^\+\+\+/) if DEBUG;
1196         # no extra formatting for "^+++ /dev/null"
1197         if ($line =~ m!^\+\+\+ "?b/!) {
1198                 if ($to->{'href'}) {
1199                         $line = '+++ b/' .
1200                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1201                                         esc_path($to->{'file'}));
1202                 } else {
1203                         $line = '+++ b/' .
1204                                 esc_path($to->{'file'});
1205                 }
1206         }
1207         $result .= qq!<div class="diff to_file">$line</div>\n!;
1208
1209         return $result;
1210 }
1211
1212 # create note for patch simplified by combined diff
1213 sub format_diff_cc_simplified {
1214         my ($diffinfo, @parents) = @_;
1215         my $result = '';
1216
1217         $result .= "<div class=\"diff header\">" .
1218                    "diff --cc ";
1219         if (!is_deleted($diffinfo)) {
1220                 $result .= $cgi->a({-href => href(action=>"blob",
1221                                                   hash_base=>$hash,
1222                                                   hash=>$diffinfo->{'to_id'},
1223                                                   file_name=>$diffinfo->{'to_file'}),
1224                                     -class => "path"},
1225                                    esc_path($diffinfo->{'to_file'}));
1226         } else {
1227                 $result .= esc_path($diffinfo->{'to_file'});
1228         }
1229         $result .= "</div>\n" . # class="diff header"
1230                    "<div class=\"diff nodifferences\">" .
1231                    "Simple merge" .
1232                    "</div>\n"; # class="diff nodifferences"
1233
1234         return $result;
1235 }
1236
1237 # format patch (diff) line (not to be used for diff headers)
1238 sub format_diff_line {
1239         my $line = shift;
1240         my ($from, $to) = @_;
1241         my $diff_class = "";
1242
1243         chomp $line;
1244
1245         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1246                 # combined diff
1247                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1248                 if ($line =~ m/^\@{3}/) {
1249                         $diff_class = " chunk_header";
1250                 } elsif ($line =~ m/^\\/) {
1251                         $diff_class = " incomplete";
1252                 } elsif ($prefix =~ tr/+/+/) {
1253                         $diff_class = " add";
1254                 } elsif ($prefix =~ tr/-/-/) {
1255                         $diff_class = " rem";
1256                 }
1257         } else {
1258                 # assume ordinary diff
1259                 my $char = substr($line, 0, 1);
1260                 if ($char eq '+') {
1261                         $diff_class = " add";
1262                 } elsif ($char eq '-') {
1263                         $diff_class = " rem";
1264                 } elsif ($char eq '@') {
1265                         $diff_class = " chunk_header";
1266                 } elsif ($char eq "\\") {
1267                         $diff_class = " incomplete";
1268                 }
1269         }
1270         $line = untabify($line);
1271         if ($from && $to && $line =~ m/^\@{2} /) {
1272                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1273                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1274
1275                 $from_lines = 0 unless defined $from_lines;
1276                 $to_lines   = 0 unless defined $to_lines;
1277
1278                 if ($from->{'href'}) {
1279                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1280                                              -class=>"list"}, $from_text);
1281                 }
1282                 if ($to->{'href'}) {
1283                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1284                                              -class=>"list"}, $to_text);
1285                 }
1286                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1287                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1288                 return "<div class=\"diff$diff_class\">$line</div>\n";
1289         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1290                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1291                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1292
1293                 @from_text = split(' ', $ranges);
1294                 for (my $i = 0; $i < @from_text; ++$i) {
1295                         ($from_start[$i], $from_nlines[$i]) =
1296                                 (split(',', substr($from_text[$i], 1)), 0);
1297                 }
1298
1299                 $to_text   = pop @from_text;
1300                 $to_start  = pop @from_start;
1301                 $to_nlines = pop @from_nlines;
1302
1303                 $line = "<span class=\"chunk_info\">$prefix ";
1304                 for (my $i = 0; $i < @from_text; ++$i) {
1305                         if ($from->{'href'}[$i]) {
1306                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1307                                                   -class=>"list"}, $from_text[$i]);
1308                         } else {
1309                                 $line .= $from_text[$i];
1310                         }
1311                         $line .= " ";
1312                 }
1313                 if ($to->{'href'}) {
1314                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1315                                           -class=>"list"}, $to_text);
1316                 } else {
1317                         $line .= $to_text;
1318                 }
1319                 $line .= " $prefix</span>" .
1320                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1321                 return "<div class=\"diff$diff_class\">$line</div>\n";
1322         }
1323         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1324 }
1325
1326 # Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1327 # linked.  Pass the hash of the tree/commit to snapshot.
1328 sub format_snapshot_links {
1329         my ($hash) = @_;
1330         my @snapshot_fmts = gitweb_check_feature('snapshot');
1331         @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1332         my $num_fmts = @snapshot_fmts;
1333         if ($num_fmts > 1) {
1334                 # A parenthesized list of links bearing format names.
1335                 # e.g. "snapshot (_tar.gz_ _zip_)"
1336                 return "snapshot (" . join(' ', map
1337                         $cgi->a({
1338                                 -href => href(
1339                                         action=>"snapshot",
1340                                         hash=>$hash,
1341                                         snapshot_format=>$_
1342                                 )
1343                         }, $known_snapshot_formats{$_}{'display'})
1344                 , @snapshot_fmts) . ")";
1345         } elsif ($num_fmts == 1) {
1346                 # A single "snapshot" link whose tooltip bears the format name.
1347                 # i.e. "_snapshot_"
1348                 my ($fmt) = @snapshot_fmts;
1349                 return
1350                         $cgi->a({
1351                                 -href => href(
1352                                         action=>"snapshot",
1353                                         hash=>$hash,
1354                                         snapshot_format=>$fmt
1355                                 ),
1356                                 -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1357                         }, "snapshot");
1358         } else { # $num_fmts == 0
1359                 return undef;
1360         }
1361 }
1362
1363 ## ----------------------------------------------------------------------
1364 ## git utility subroutines, invoking git commands
1365
1366 # returns path to the core git executable and the --git-dir parameter as list
1367 sub git_cmd {
1368         return $GIT, '--git-dir='.$git_dir;
1369 }
1370
1371 # returns path to the core git executable and the --git-dir parameter as string
1372 sub git_cmd_str {
1373         return join(' ', git_cmd());
1374 }
1375
1376 # get HEAD ref of given project as hash
1377 sub git_get_head_hash {
1378         my $project = shift;
1379         my $o_git_dir = $git_dir;
1380         my $retval = undef;
1381         $git_dir = "$projectroot/$project";
1382         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1383                 my $head = <$fd>;
1384                 close $fd;
1385                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1386                         $retval = $1;
1387                 }
1388         }
1389         if (defined $o_git_dir) {
1390                 $git_dir = $o_git_dir;
1391         }
1392         return $retval;
1393 }
1394
1395 # get type of given object
1396 sub git_get_type {
1397         my $hash = shift;
1398
1399         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1400         my $type = <$fd>;
1401         close $fd or return;
1402         chomp $type;
1403         return $type;
1404 }
1405
1406 sub git_get_project_config {
1407         my ($key, $type) = @_;
1408
1409         return unless ($key);
1410         $key =~ s/^gitweb\.//;
1411         return if ($key =~ m/\W/);
1412
1413         my @x = (git_cmd(), 'config');
1414         if (defined $type) { push @x, $type; }
1415         push @x, "--get";
1416         push @x, "gitweb.$key";
1417         my $val = qx(@x);
1418         chomp $val;
1419         return ($val);
1420 }
1421
1422 # get hash of given path at given ref
1423 sub git_get_hash_by_path {
1424         my $base = shift;
1425         my $path = shift || return undef;
1426         my $type = shift;
1427
1428         $path =~ s,/+$,,;
1429
1430         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1431                 or die_error(undef, "Open git-ls-tree failed");
1432         my $line = <$fd>;
1433         close $fd or return undef;
1434
1435         if (!defined $line) {
1436                 # there is no tree or hash given by $path at $base
1437                 return undef;
1438         }
1439
1440         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1441         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1442         if (defined $type && $type ne $2) {
1443                 # type doesn't match
1444                 return undef;
1445         }
1446         return $3;
1447 }
1448
1449 # get path of entry with given hash at given tree-ish (ref)
1450 # used to get 'from' filename for combined diff (merge commit) for renames
1451 sub git_get_path_by_hash {
1452         my $base = shift || return;
1453         my $hash = shift || return;
1454
1455         local $/ = "\0";
1456
1457         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1458                 or return undef;
1459         while (my $line = <$fd>) {
1460                 chomp $line;
1461
1462                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1463                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1464                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1465                         close $fd;
1466                         return $1;
1467                 }
1468         }
1469         close $fd;
1470         return undef;
1471 }
1472
1473 ## ......................................................................
1474 ## git utility functions, directly accessing git repository
1475
1476 sub git_get_project_description {
1477         my $path = shift;
1478
1479         open my $fd, "$projectroot/$path/description" or return undef;
1480         my $descr = <$fd>;
1481         close $fd;
1482         if (defined $descr) {
1483                 chomp $descr;
1484         }
1485         return $descr;
1486 }
1487
1488 sub git_get_project_url_list {
1489         my $path = shift;
1490
1491         open my $fd, "$projectroot/$path/cloneurl" or return;
1492         my @git_project_url_list = map { chomp; $_ } <$fd>;
1493         close $fd;
1494
1495         return wantarray ? @git_project_url_list : \@git_project_url_list;
1496 }
1497
1498 sub git_get_projects_list {
1499         my ($filter) = @_;
1500         my @list;
1501
1502         $filter ||= '';
1503         $filter =~ s/\.git$//;
1504
1505         my ($check_forks) = gitweb_check_feature('forks');
1506
1507         if (-d $projects_list) {
1508                 # search in directory
1509                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1510                 # remove the trailing "/"
1511                 $dir =~ s!/+$!!;
1512                 my $pfxlen = length("$dir");
1513
1514                 File::Find::find({
1515                         follow_fast => 1, # follow symbolic links
1516                         follow_skip => 2, # ignore duplicates
1517                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1518                         wanted => sub {
1519                                 # skip project-list toplevel, if we get it.
1520                                 return if (m!^[/.]$!);
1521                                 # only directories can be git repositories
1522                                 return unless (-d $_);
1523
1524                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1525                                 # we check related file in $projectroot
1526                                 if ($check_forks and $subdir =~ m#/.#) {
1527                                         $File::Find::prune = 1;
1528                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1529                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1530                                         $File::Find::prune = 1;
1531                                 }
1532                         },
1533                 }, "$dir");
1534
1535         } elsif (-f $projects_list) {
1536                 # read from file(url-encoded):
1537                 # 'git%2Fgit.git Linus+Torvalds'
1538                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1539                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1540                 my %paths;
1541                 open my ($fd), $projects_list or return;
1542         PROJECT:
1543                 while (my $line = <$fd>) {
1544                         chomp $line;
1545                         my ($path, $owner) = split ' ', $line;
1546                         $path = unescape($path);
1547                         $owner = unescape($owner);
1548                         if (!defined $path) {
1549                                 next;
1550                         }
1551                         if ($filter ne '') {
1552                                 # looking for forks;
1553                                 my $pfx = substr($path, 0, length($filter));
1554                                 if ($pfx ne $filter) {
1555                                         next PROJECT;
1556                                 }
1557                                 my $sfx = substr($path, length($filter));
1558                                 if ($sfx !~ /^\/.*\.git$/) {
1559                                         next PROJECT;
1560                                 }
1561                         } elsif ($check_forks) {
1562                         PATH:
1563                                 foreach my $filter (keys %paths) {
1564                                         # looking for forks;
1565                                         my $pfx = substr($path, 0, length($filter));
1566                                         if ($pfx ne $filter) {
1567                                                 next PATH;
1568                                         }
1569                                         my $sfx = substr($path, length($filter));
1570                                         if ($sfx !~ /^\/.*\.git$/) {
1571                                                 next PATH;
1572                                         }
1573                                         # is a fork, don't include it in
1574                                         # the list
1575                                         next PROJECT;
1576                                 }
1577                         }
1578                         if (check_export_ok("$projectroot/$path")) {
1579                                 my $pr = {
1580                                         path => $path,
1581                                         owner => to_utf8($owner),
1582                                 };
1583                                 push @list, $pr;
1584                                 (my $forks_path = $path) =~ s/\.git$//;
1585                                 $paths{$forks_path}++;
1586                         }
1587                 }
1588                 close $fd;
1589         }
1590         return @list;
1591 }
1592
1593 our $gitweb_project_owner = undef;
1594 sub git_get_project_list_from_file {
1595
1596         return if (defined $gitweb_project_owner);
1597
1598         $gitweb_project_owner = {};
1599         # read from file (url-encoded):
1600         # 'git%2Fgit.git Linus+Torvalds'
1601         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1602         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1603         if (-f $projects_list) {
1604                 open (my $fd , $projects_list);
1605                 while (my $line = <$fd>) {
1606                         chomp $line;
1607                         my ($pr, $ow) = split ' ', $line;
1608                         $pr = unescape($pr);
1609                         $ow = unescape($ow);
1610                         $gitweb_project_owner->{$pr} = to_utf8($ow);
1611                 }
1612                 close $fd;
1613         }
1614 }
1615
1616 sub git_get_project_owner {
1617         my $project = shift;
1618         my $owner;
1619
1620         return undef unless $project;
1621
1622         if (!defined $gitweb_project_owner) {
1623                 git_get_project_list_from_file();
1624         }
1625
1626         if (exists $gitweb_project_owner->{$project}) {
1627                 $owner = $gitweb_project_owner->{$project};
1628         }
1629         if (!defined $owner) {
1630                 $owner = get_file_owner("$projectroot/$project");
1631         }
1632
1633         return $owner;
1634 }
1635
1636 sub git_get_last_activity {
1637         my ($path) = @_;
1638         my $fd;
1639
1640         $git_dir = "$projectroot/$path";
1641         open($fd, "-|", git_cmd(), 'for-each-ref',
1642              '--format=%(committer)',
1643              '--sort=-committerdate',
1644              '--count=1',
1645              'refs/heads') or return;
1646         my $most_recent = <$fd>;
1647         close $fd or return;
1648         if (defined $most_recent &&
1649             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1650                 my $timestamp = $1;
1651                 my $age = time - $timestamp;
1652                 return ($age, age_string($age));
1653         }
1654         return (undef, undef);
1655 }
1656
1657 sub git_get_references {
1658         my $type = shift || "";
1659         my %refs;
1660         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1661         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1662         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1663                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1664                 or return;
1665
1666         while (my $line = <$fd>) {
1667                 chomp $line;
1668                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1669                         if (defined $refs{$1}) {
1670                                 push @{$refs{$1}}, $2;
1671                         } else {
1672                                 $refs{$1} = [ $2 ];
1673                         }
1674                 }
1675         }
1676         close $fd or return;
1677         return \%refs;
1678 }
1679
1680 sub git_get_rev_name_tags {
1681         my $hash = shift || return undef;
1682
1683         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1684                 or return;
1685         my $name_rev = <$fd>;
1686         close $fd;
1687
1688         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1689                 return $1;
1690         } else {
1691                 # catches also '$hash undefined' output
1692                 return undef;
1693         }
1694 }
1695
1696 ## ----------------------------------------------------------------------
1697 ## parse to hash functions
1698
1699 sub parse_date {
1700         my $epoch = shift;
1701         my $tz = shift || "-0000";
1702
1703         my %date;
1704         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1705         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1706         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1707         $date{'hour'} = $hour;
1708         $date{'minute'} = $min;
1709         $date{'mday'} = $mday;
1710         $date{'day'} = $days[$wday];
1711         $date{'month'} = $months[$mon];
1712         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1713                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1714         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1715                              $mday, $months[$mon], $hour ,$min;
1716         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1717                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1718
1719         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1720         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1721         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1722         $date{'hour_local'} = $hour;
1723         $date{'minute_local'} = $min;
1724         $date{'tz_local'} = $tz;
1725         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1726                                   1900+$year, $mon+1, $mday,
1727                                   $hour, $min, $sec, $tz);
1728         return %date;
1729 }
1730
1731 sub parse_tag {
1732         my $tag_id = shift;
1733         my %tag;
1734         my @comment;
1735
1736         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1737         $tag{'id'} = $tag_id;
1738         while (my $line = <$fd>) {
1739                 chomp $line;
1740                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1741                         $tag{'object'} = $1;
1742                 } elsif ($line =~ m/^type (.+)$/) {
1743                         $tag{'type'} = $1;
1744                 } elsif ($line =~ m/^tag (.+)$/) {
1745                         $tag{'name'} = $1;
1746                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1747                         $tag{'author'} = $1;
1748                         $tag{'epoch'} = $2;
1749                         $tag{'tz'} = $3;
1750                 } elsif ($line =~ m/--BEGIN/) {
1751                         push @comment, $line;
1752                         last;
1753                 } elsif ($line eq "") {
1754                         last;
1755                 }
1756         }
1757         push @comment, <$fd>;
1758         $tag{'comment'} = \@comment;
1759         close $fd or return;
1760         if (!defined $tag{'name'}) {
1761                 return
1762         };
1763         return %tag
1764 }
1765
1766 sub parse_commit_text {
1767         my ($commit_text, $withparents) = @_;
1768         my @commit_lines = split '\n', $commit_text;
1769         my %co;
1770
1771         pop @commit_lines; # Remove '\0'
1772
1773         if (! @commit_lines) {
1774                 return;
1775         }
1776
1777         my $header = shift @commit_lines;
1778         if ($header !~ m/^[0-9a-fA-F]{40}/) {
1779                 return;
1780         }
1781         ($co{'id'}, my @parents) = split ' ', $header;
1782         while (my $line = shift @commit_lines) {
1783                 last if $line eq "\n";
1784                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1785                         $co{'tree'} = $1;
1786                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1787                         push @parents, $1;
1788                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1789                         $co{'author'} = $1;
1790                         $co{'author_epoch'} = $2;
1791                         $co{'author_tz'} = $3;
1792                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1793                                 $co{'author_name'}  = $1;
1794                                 $co{'author_email'} = $2;
1795                         } else {
1796                                 $co{'author_name'} = $co{'author'};
1797                         }
1798                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1799                         $co{'committer'} = $1;
1800                         $co{'committer_epoch'} = $2;
1801                         $co{'committer_tz'} = $3;
1802                         $co{'committer_name'} = $co{'committer'};
1803                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1804                                 $co{'committer_name'}  = $1;
1805                                 $co{'committer_email'} = $2;
1806                         } else {
1807                                 $co{'committer_name'} = $co{'committer'};
1808                         }
1809                 }
1810         }
1811         if (!defined $co{'tree'}) {
1812                 return;
1813         };
1814         $co{'parents'} = \@parents;
1815         $co{'parent'} = $parents[0];
1816
1817         foreach my $title (@commit_lines) {
1818                 $title =~ s/^    //;
1819                 if ($title ne "") {
1820                         $co{'title'} = chop_str($title, 80, 5);
1821                         # remove leading stuff of merges to make the interesting part visible
1822                         if (length($title) > 50) {
1823                                 $title =~ s/^Automatic //;
1824                                 $title =~ s/^merge (of|with) /Merge ... /i;
1825                                 if (length($title) > 50) {
1826                                         $title =~ s/(http|rsync):\/\///;
1827                                 }
1828                                 if (length($title) > 50) {
1829                                         $title =~ s/(master|www|rsync)\.//;
1830                                 }
1831                                 if (length($title) > 50) {
1832                                         $title =~ s/kernel.org:?//;
1833                                 }
1834                                 if (length($title) > 50) {
1835                                         $title =~ s/\/pub\/scm//;
1836                                 }
1837                         }
1838                         $co{'title_short'} = chop_str($title, 50, 5);
1839                         last;
1840                 }
1841         }
1842         if ($co{'title'} eq "") {
1843                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1844         }
1845         # remove added spaces
1846         foreach my $line (@commit_lines) {
1847                 $line =~ s/^    //;
1848         }
1849         $co{'comment'} = \@commit_lines;
1850
1851         my $age = time - $co{'committer_epoch'};
1852         $co{'age'} = $age;
1853         $co{'age_string'} = age_string($age);
1854         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1855         if ($age > 60*60*24*7*2) {
1856                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1857                 $co{'age_string_age'} = $co{'age_string'};
1858         } else {
1859                 $co{'age_string_date'} = $co{'age_string'};
1860                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1861         }
1862         return %co;
1863 }
1864
1865 sub parse_commit {
1866         my ($commit_id) = @_;
1867         my %co;
1868
1869         local $/ = "\0";
1870
1871         open my $fd, "-|", git_cmd(), "rev-list",
1872                 "--parents",
1873                 "--header",
1874                 "--max-count=1",
1875                 $commit_id,
1876                 "--",
1877                 or die_error(undef, "Open git-rev-list failed");
1878         %co = parse_commit_text(<$fd>, 1);
1879         close $fd;
1880
1881         return %co;
1882 }
1883
1884 sub parse_commits {
1885         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1886         my @cos;
1887
1888         $maxcount ||= 1;
1889         $skip ||= 0;
1890
1891         local $/ = "\0";
1892
1893         open my $fd, "-|", git_cmd(), "rev-list",
1894                 "--header",
1895                 ($arg ? ($arg) : ()),
1896                 ("--max-count=" . $maxcount),
1897                 ("--skip=" . $skip),
1898                 @extra_options,
1899                 $commit_id,
1900                 "--",
1901                 ($filename ? ($filename) : ())
1902                 or die_error(undef, "Open git-rev-list failed");
1903         while (my $line = <$fd>) {
1904                 my %co = parse_commit_text($line);
1905                 push @cos, \%co;
1906         }
1907         close $fd;
1908
1909         return wantarray ? @cos : \@cos;
1910 }
1911
1912 # parse ref from ref_file, given by ref_id, with given type
1913 sub parse_ref {
1914         my $ref_file = shift;
1915         my $ref_id = shift;
1916         my $type = shift || git_get_type($ref_id);
1917         my %ref_item;
1918
1919         $ref_item{'type'} = $type;
1920         $ref_item{'id'} = $ref_id;
1921         $ref_item{'epoch'} = 0;
1922         $ref_item{'age'} = "unknown";
1923         if ($type eq "tag") {
1924                 my %tag = parse_tag($ref_id);
1925                 $ref_item{'comment'} = $tag{'comment'};
1926                 if ($tag{'type'} eq "commit") {
1927                         my %co = parse_commit($tag{'object'});
1928                         $ref_item{'epoch'} = $co{'committer_epoch'};
1929                         $ref_item{'age'} = $co{'age_string'};
1930                 } elsif (defined($tag{'epoch'})) {
1931                         my $age = time - $tag{'epoch'};
1932                         $ref_item{'epoch'} = $tag{'epoch'};
1933                         $ref_item{'age'} = age_string($age);
1934                 }
1935                 $ref_item{'reftype'} = $tag{'type'};
1936                 $ref_item{'name'} = $tag{'name'};
1937                 $ref_item{'refid'} = $tag{'object'};
1938         } elsif ($type eq "commit"){
1939                 my %co = parse_commit($ref_id);
1940                 $ref_item{'reftype'} = "commit";
1941                 $ref_item{'name'} = $ref_file;
1942                 $ref_item{'title'} = $co{'title'};
1943                 $ref_item{'refid'} = $ref_id;
1944                 $ref_item{'epoch'} = $co{'committer_epoch'};
1945                 $ref_item{'age'} = $co{'age_string'};
1946         } else {
1947                 $ref_item{'reftype'} = $type;
1948                 $ref_item{'name'} = $ref_file;
1949                 $ref_item{'refid'} = $ref_id;
1950         }
1951
1952         return %ref_item;
1953 }
1954
1955 # parse line of git-diff-tree "raw" output
1956 sub parse_difftree_raw_line {
1957         my $line = shift;
1958         my %res;
1959
1960         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1961         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1962         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1963                 $res{'from_mode'} = $1;
1964                 $res{'to_mode'} = $2;
1965                 $res{'from_id'} = $3;
1966                 $res{'to_id'} = $4;
1967                 $res{'status'} = $5;
1968                 $res{'similarity'} = $6;
1969                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1970                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1971                 } else {
1972                         $res{'file'} = unquote($7);
1973                 }
1974         }
1975         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1976         # combined diff (for merge commit)
1977         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1978                 $res{'nparents'}  = length($1);
1979                 $res{'from_mode'} = [ split(' ', $2) ];
1980                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1981                 $res{'from_id'} = [ split(' ', $3) ];
1982                 $res{'to_id'} = pop @{$res{'from_id'}};
1983                 $res{'status'} = [ split('', $4) ];
1984                 $res{'to_file'} = unquote($5);
1985         }
1986         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1987         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1988                 $res{'commit'} = $1;
1989         }
1990
1991         return wantarray ? %res : \%res;
1992 }
1993
1994 # parse line of git-ls-tree output
1995 sub parse_ls_tree_line ($;%) {
1996         my $line = shift;
1997         my %opts = @_;
1998         my %res;
1999
2000         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2001         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2002
2003         $res{'mode'} = $1;
2004         $res{'type'} = $2;
2005         $res{'hash'} = $3;
2006         if ($opts{'-z'}) {
2007                 $res{'name'} = $4;
2008         } else {
2009                 $res{'name'} = unquote($4);
2010         }
2011
2012         return wantarray ? %res : \%res;
2013 }
2014
2015 # generates _two_ hashes, references to which are passed as 2 and 3 argument
2016 sub parse_from_to_diffinfo {
2017         my ($diffinfo, $from, $to, @parents) = @_;
2018
2019         if ($diffinfo->{'nparents'}) {
2020                 # combined diff
2021                 $from->{'file'} = [];
2022                 $from->{'href'} = [];
2023                 fill_from_file_info($diffinfo, @parents)
2024                         unless exists $diffinfo->{'from_file'};
2025                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2026                         $from->{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
2027                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2028                                 $from->{'href'}[$i] = href(action=>"blob",
2029                                                            hash_base=>$parents[$i],
2030                                                            hash=>$diffinfo->{'from_id'}[$i],
2031                                                            file_name=>$from->{'file'}[$i]);
2032                         } else {
2033                                 $from->{'href'}[$i] = undef;
2034                         }
2035                 }
2036         } else {
2037                 $from->{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2038                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2039                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2040                                                hash=>$diffinfo->{'from_id'},
2041                                                file_name=>$from->{'file'});
2042                 } else {
2043                         delete $from->{'href'};
2044                 }
2045         }
2046
2047         $to->{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
2048         if (!is_deleted($diffinfo)) { # file exists in result
2049                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2050                                      hash=>$diffinfo->{'to_id'},
2051                                      file_name=>$to->{'file'});
2052         } else {
2053                 delete $to->{'href'};
2054         }
2055 }
2056
2057 ## ......................................................................
2058 ## parse to array of hashes functions
2059
2060 sub git_get_heads_list {
2061         my $limit = shift;
2062         my @headslist;
2063
2064         open my $fd, '-|', git_cmd(), 'for-each-ref',
2065                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2066                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2067                 'refs/heads'
2068                 or return;
2069         while (my $line = <$fd>) {
2070                 my %ref_item;
2071
2072                 chomp $line;
2073                 my ($refinfo, $committerinfo) = split(/\0/, $line);
2074                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
2075                 my ($committer, $epoch, $tz) =
2076                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2077                 $name =~ s!^refs/heads/!!;
2078
2079                 $ref_item{'name'}  = $name;
2080                 $ref_item{'id'}    = $hash;
2081                 $ref_item{'title'} = $title || '(no commit message)';
2082                 $ref_item{'epoch'} = $epoch;
2083                 if ($epoch) {
2084                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2085                 } else {
2086                         $ref_item{'age'} = "unknown";
2087                 }
2088
2089                 push @headslist, \%ref_item;
2090         }
2091         close $fd;
2092
2093         return wantarray ? @headslist : \@headslist;
2094 }
2095
2096 sub git_get_tags_list {
2097         my $limit = shift;
2098         my @tagslist;
2099
2100         open my $fd, '-|', git_cmd(), 'for-each-ref',
2101                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2102                 '--format=%(objectname) %(objecttype) %(refname) '.
2103                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2104                 'refs/tags'
2105                 or return;
2106         while (my $line = <$fd>) {
2107                 my %ref_item;
2108
2109                 chomp $line;
2110                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2111                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2112                 my ($creator, $epoch, $tz) =
2113                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2114                 $name =~ s!^refs/tags/!!;
2115
2116                 $ref_item{'type'} = $type;
2117                 $ref_item{'id'} = $id;
2118                 $ref_item{'name'} = $name;
2119                 if ($type eq "tag") {
2120                         $ref_item{'subject'} = $title;
2121                         $ref_item{'reftype'} = $reftype;
2122                         $ref_item{'refid'}   = $refid;
2123                 } else {
2124                         $ref_item{'reftype'} = $type;
2125                         $ref_item{'refid'}   = $id;
2126                 }
2127
2128                 if ($type eq "tag" || $type eq "commit") {
2129                         $ref_item{'epoch'} = $epoch;
2130                         if ($epoch) {
2131                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2132                         } else {
2133                                 $ref_item{'age'} = "unknown";
2134                         }
2135                 }
2136
2137                 push @tagslist, \%ref_item;
2138         }
2139         close $fd;
2140
2141         return wantarray ? @tagslist : \@tagslist;
2142 }
2143
2144 ## ----------------------------------------------------------------------
2145 ## filesystem-related functions
2146
2147 sub get_file_owner {
2148         my $path = shift;
2149
2150         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2151         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2152         if (!defined $gcos) {
2153                 return undef;
2154         }
2155         my $owner = $gcos;
2156         $owner =~ s/[,;].*$//;
2157         return to_utf8($owner);
2158 }
2159
2160 ## ......................................................................
2161 ## mimetype related functions
2162
2163 sub mimetype_guess_file {
2164         my $filename = shift;
2165         my $mimemap = shift;
2166         -r $mimemap or return undef;
2167
2168         my %mimemap;
2169         open(MIME, $mimemap) or return undef;
2170         while (<MIME>) {
2171                 next if m/^#/; # skip comments
2172                 my ($mime, $exts) = split(/\t+/);
2173                 if (defined $exts) {
2174                         my @exts = split(/\s+/, $exts);
2175                         foreach my $ext (@exts) {
2176                                 $mimemap{$ext} = $mime;
2177                         }
2178                 }
2179         }
2180         close(MIME);
2181
2182         $filename =~ /\.([^.]*)$/;
2183         return $mimemap{$1};
2184 }
2185
2186 sub mimetype_guess {
2187         my $filename = shift;
2188         my $mime;
2189         $filename =~ /\./ or return undef;
2190
2191         if ($mimetypes_file) {
2192                 my $file = $mimetypes_file;
2193                 if ($file !~ m!^/!) { # if it is relative path
2194                         # it is relative to project
2195                         $file = "$projectroot/$project/$file";
2196                 }
2197                 $mime = mimetype_guess_file($filename, $file);
2198         }
2199         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2200         return $mime;
2201 }
2202
2203 sub blob_mimetype {
2204         my $fd = shift;
2205         my $filename = shift;
2206
2207         if ($filename) {
2208                 my $mime = mimetype_guess($filename);
2209                 $mime and return $mime;
2210         }
2211
2212         # just in case
2213         return $default_blob_plain_mimetype unless $fd;
2214
2215         if (-T $fd) {
2216                 return 'text/plain' .
2217                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
2218         } elsif (! $filename) {
2219                 return 'application/octet-stream';
2220         } elsif ($filename =~ m/\.png$/i) {
2221                 return 'image/png';
2222         } elsif ($filename =~ m/\.gif$/i) {
2223                 return 'image/gif';
2224         } elsif ($filename =~ m/\.jpe?g$/i) {
2225                 return 'image/jpeg';
2226         } else {
2227                 return 'application/octet-stream';
2228         }
2229 }
2230
2231 ## ======================================================================
2232 ## functions printing HTML: header, footer, error page
2233
2234 sub git_header_html {
2235         my $status = shift || "200 OK";
2236         my $expires = shift;
2237
2238         my $title = "$site_name";
2239         if (defined $project) {
2240                 $title .= " - " . to_utf8($project);
2241                 if (defined $action) {
2242                         $title .= "/$action";
2243                         if (defined $file_name) {
2244                                 $title .= " - " . esc_path($file_name);
2245                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2246                                         $title .= "/";
2247                                 }
2248                         }
2249                 }
2250         }
2251         my $content_type;
2252         # require explicit support from the UA if we are to send the page as
2253         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2254         # we have to do this because MSIE sometimes globs '*/*', pretending to
2255         # support xhtml+xml but choking when it gets what it asked for.
2256         if (defined $cgi->http('HTTP_ACCEPT') &&
2257             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2258             $cgi->Accept('application/xhtml+xml') != 0) {
2259                 $content_type = 'application/xhtml+xml';
2260         } else {
2261                 $content_type = 'text/html';
2262         }
2263         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2264                            -status=> $status, -expires => $expires);
2265         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2266         print <<EOF;
2267 <?xml version="1.0" encoding="utf-8"?>
2268 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2269 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2270 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2271 <!-- git core binaries version $git_version -->
2272 <head>
2273 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2274 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2275 <meta name="robots" content="index, nofollow"/>
2276 <title>$title</title>
2277 EOF
2278 # print out each stylesheet that exist
2279         if (defined $stylesheet) {
2280 #provides backwards capability for those people who define style sheet in a config file
2281                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2282         } else {
2283                 foreach my $stylesheet (@stylesheets) {
2284                         next unless $stylesheet;
2285                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2286                 }
2287         }
2288         if (defined $project) {
2289                 printf('<link rel="alternate" title="%s log RSS feed" '.
2290                        'href="%s" type="application/rss+xml" />'."\n",
2291                        esc_param($project), href(action=>"rss"));
2292                 printf('<link rel="alternate" title="%s log RSS feed (no merges)" '.
2293                        'href="%s" type="application/rss+xml" />'."\n",
2294                        esc_param($project), href(action=>"rss",
2295                                                  extra_options=>"--no-merges"));
2296                 printf('<link rel="alternate" title="%s log Atom feed" '.
2297                        'href="%s" type="application/atom+xml" />'."\n",
2298                        esc_param($project), href(action=>"atom"));
2299                 printf('<link rel="alternate" title="%s log Atom feed (no merges)" '.
2300                        'href="%s" type="application/atom+xml" />'."\n",
2301                        esc_param($project), href(action=>"atom",
2302                                                  extra_options=>"--no-merges"));
2303         } else {
2304                 printf('<link rel="alternate" title="%s projects list" '.
2305                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
2306                        $site_name, href(project=>undef, action=>"project_index"));
2307                 printf('<link rel="alternate" title="%s projects feeds" '.
2308                        'href="%s" type="text/x-opml"/>'."\n",
2309                        $site_name, href(project=>undef, action=>"opml"));
2310         }
2311         if (defined $favicon) {
2312                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
2313         }
2314
2315         print "</head>\n" .
2316               "<body>\n";
2317
2318         if (-f $site_header) {
2319                 open (my $fd, $site_header);
2320                 print <$fd>;
2321                 close $fd;
2322         }
2323
2324         print "<div class=\"page_header\">\n" .
2325               $cgi->a({-href => esc_url($logo_url),
2326                        -title => $logo_label},
2327                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2328         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2329         if (defined $project) {
2330                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2331                 if (defined $action) {
2332                         print " / $action";
2333                 }
2334                 print "\n";
2335         }
2336         print "</div>\n";
2337
2338         my ($have_search) = gitweb_check_feature('search');
2339         if ((defined $project) && ($have_search)) {
2340                 if (!defined $searchtext) {
2341                         $searchtext = "";
2342                 }
2343                 my $search_hash;
2344                 if (defined $hash_base) {
2345                         $search_hash = $hash_base;
2346                 } elsif (defined $hash) {
2347                         $search_hash = $hash;
2348                 } else {
2349                         $search_hash = "HEAD";
2350                 }
2351                 my $action = $my_uri;
2352                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2353                 if ($use_pathinfo) {
2354                         $action .= "/$project";
2355                 } else {
2356                         $cgi->param("p", $project);
2357                 }
2358                 $cgi->param("a", "search");
2359                 $cgi->param("h", $search_hash);
2360                 print $cgi->startform(-method => "get", -action => $action) .
2361                       "<div class=\"search\">\n" .
2362                       (!$use_pathinfo && $cgi->hidden(-name => "p") . "\n") .
2363                       $cgi->hidden(-name => "a") . "\n" .
2364                       $cgi->hidden(-name => "h") . "\n" .
2365                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2366                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2367                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2368                       " search:\n",
2369                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2370                       "</div>" .
2371                       $cgi->end_form() . "\n";
2372         }
2373 }
2374
2375 sub git_footer_html {
2376         print "<div class=\"page_footer\">\n";
2377         if (defined $project) {
2378                 my $descr = git_get_project_description($project);
2379                 if (defined $descr) {
2380                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2381                 }
2382                 print $cgi->a({-href => href(action=>"rss"),
2383                               -class => "rss_logo"}, "RSS") . " ";
2384                 print $cgi->a({-href => href(action=>"atom"),
2385                               -class => "rss_logo"}, "Atom") . "\n";
2386         } else {
2387                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2388                               -class => "rss_logo"}, "OPML") . " ";
2389                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2390                               -class => "rss_logo"}, "TXT") . "\n";
2391         }
2392         print "</div>\n" ;
2393
2394         if (-f $site_footer) {
2395                 open (my $fd, $site_footer);
2396                 print <$fd>;
2397                 close $fd;
2398         }
2399
2400         print "</body>\n" .
2401               "</html>";
2402 }
2403
2404 sub die_error {
2405         my $status = shift || "403 Forbidden";
2406         my $error = shift || "Malformed query, file missing or permission denied";
2407
2408         git_header_html($status);
2409         print <<EOF;
2410 <div class="page_body">
2411 <br /><br />
2412 $status - $error
2413 <br />
2414 </div>
2415 EOF
2416         git_footer_html();
2417         exit;
2418 }
2419
2420 ## ----------------------------------------------------------------------
2421 ## functions printing or outputting HTML: navigation
2422
2423 sub git_print_page_nav {
2424         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2425         $extra = '' if !defined $extra; # pager or formats
2426
2427         my @navs = qw(summary shortlog log commit commitdiff tree);
2428         if ($suppress) {
2429                 @navs = grep { $_ ne $suppress } @navs;
2430         }
2431
2432         my %arg = map { $_ => {action=>$_} } @navs;
2433         if (defined $head) {
2434                 for (qw(commit commitdiff)) {
2435                         $arg{$_}{'hash'} = $head;
2436                 }
2437                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2438                         for (qw(shortlog log)) {
2439                                 $arg{$_}{'hash'} = $head;
2440                         }
2441                 }
2442         }
2443         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2444         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2445
2446         print "<div class=\"page_nav\">\n" .
2447                 (join " | ",
2448                  map { $_ eq $current ?
2449                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
2450                  } @navs);
2451         print "<br/>\n$extra<br/>\n" .
2452               "</div>\n";
2453 }
2454
2455 sub format_paging_nav {
2456         my ($action, $hash, $head, $page, $nrevs) = @_;
2457         my $paging_nav;
2458
2459
2460         if ($hash ne $head || $page) {
2461                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
2462         } else {
2463                 $paging_nav .= "HEAD";
2464         }
2465
2466         if ($page > 0) {
2467                 $paging_nav .= " &sdot; " .
2468                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
2469                                  -accesskey => "p", -title => "Alt-p"}, "prev");
2470         } else {
2471                 $paging_nav .= " &sdot; prev";
2472         }
2473
2474         if ($nrevs >= (100 * ($page+1)-1)) {
2475                 $paging_nav .= " &sdot; " .
2476                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
2477                                  -accesskey => "n", -title => "Alt-n"}, "next");
2478         } else {
2479                 $paging_nav .= " &sdot; next";
2480         }
2481
2482         return $paging_nav;
2483 }
2484
2485 ## ......................................................................
2486 ## functions printing or outputting HTML: div
2487
2488 sub git_print_header_div {
2489         my ($action, $title, $hash, $hash_base) = @_;
2490         my %args = ();
2491
2492         $args{'action'} = $action;
2493         $args{'hash'} = $hash if $hash;
2494         $args{'hash_base'} = $hash_base if $hash_base;
2495
2496         print "<div class=\"header\">\n" .
2497               $cgi->a({-href => href(%args), -class => "title"},
2498               $title ? $title : $action) .
2499               "\n</div>\n";
2500 }
2501
2502 #sub git_print_authorship (\%) {
2503 sub git_print_authorship {
2504         my $co = shift;
2505
2506         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
2507         print "<div class=\"author_date\">" .
2508               esc_html($co->{'author_name'}) .
2509               " [$ad{'rfc2822'}";
2510         if ($ad{'hour_local'} < 6) {
2511                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
2512                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2513         } else {
2514                 printf(" (%02d:%02d %s)",
2515                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
2516         }
2517         print "]</div>\n";
2518 }
2519
2520 sub git_print_page_path {
2521         my $name = shift;
2522         my $type = shift;
2523         my $hb = shift;
2524
2525
2526         print "<div class=\"page_path\">";
2527         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
2528                       -title => 'tree root'}, to_utf8("[$project]"));
2529         print " / ";
2530         if (defined $name) {
2531                 my @dirname = split '/', $name;
2532                 my $basename = pop @dirname;
2533                 my $fullname = '';
2534
2535                 foreach my $dir (@dirname) {
2536                         $fullname .= ($fullname ? '/' : '') . $dir;
2537                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2538                                                      hash_base=>$hb),
2539                                       -title => $fullname}, esc_path($dir));
2540                         print " / ";
2541                 }
2542                 if (defined $type && $type eq 'blob') {
2543                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2544                                                      hash_base=>$hb),
2545                                       -title => $name}, esc_path($basename));
2546                 } elsif (defined $type && $type eq 'tree') {
2547                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2548                                                      hash_base=>$hb),
2549                                       -title => $name}, esc_path($basename));
2550                         print " / ";
2551                 } else {
2552                         print esc_path($basename);
2553                 }
2554         }
2555         print "<br/></div>\n";
2556 }
2557
2558 # sub git_print_log (\@;%) {
2559 sub git_print_log ($;%) {
2560         my $log = shift;
2561         my %opts = @_;
2562
2563         if ($opts{'-remove_title'}) {
2564                 # remove title, i.e. first line of log
2565                 shift @$log;
2566         }
2567         # remove leading empty lines
2568         while (defined $log->[0] && $log->[0] eq "") {
2569                 shift @$log;
2570         }
2571
2572         # print log
2573         my $signoff = 0;
2574         my $empty = 0;
2575         foreach my $line (@$log) {
2576                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2577                         $signoff = 1;
2578                         $empty = 0;
2579                         if (! $opts{'-remove_signoff'}) {
2580                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2581                                 next;
2582                         } else {
2583                                 # remove signoff lines
2584                                 next;
2585                         }
2586                 } else {
2587                         $signoff = 0;
2588                 }
2589
2590                 # print only one empty line
2591                 # do not print empty line after signoff
2592                 if ($line eq "") {
2593                         next if ($empty || $signoff);
2594                         $empty = 1;
2595                 } else {
2596                         $empty = 0;
2597                 }
2598
2599                 print format_log_line_html($line) . "<br/>\n";
2600         }
2601
2602         if ($opts{'-final_empty_line'}) {
2603                 # end with single empty line
2604                 print "<br/>\n" unless $empty;
2605         }
2606 }
2607
2608 # return link target (what link points to)
2609 sub git_get_link_target {
2610         my $hash = shift;
2611         my $link_target;
2612
2613         # read link
2614         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2615                 or return;
2616         {
2617                 local $/;
2618                 $link_target = <$fd>;
2619         }
2620         close $fd
2621                 or return;
2622
2623         return $link_target;
2624 }
2625
2626 # given link target, and the directory (basedir) the link is in,
2627 # return target of link relative to top directory (top tree);
2628 # return undef if it is not possible (including absolute links).
2629 sub normalize_link_target {
2630         my ($link_target, $basedir, $hash_base) = @_;
2631
2632         # we can normalize symlink target only if $hash_base is provided
2633         return unless $hash_base;
2634
2635         # absolute symlinks (beginning with '/') cannot be normalized
2636         return if (substr($link_target, 0, 1) eq '/');
2637
2638         # normalize link target to path from top (root) tree (dir)
2639         my $path;
2640         if ($basedir) {
2641                 $path = $basedir . '/' . $link_target;
2642         } else {
2643                 # we are in top (root) tree (dir)
2644                 $path = $link_target;
2645         }
2646
2647         # remove //, /./, and /../
2648         my @path_parts;
2649         foreach my $part (split('/', $path)) {
2650                 # discard '.' and ''
2651                 next if (!$part || $part eq '.');
2652                 # handle '..'
2653                 if ($part eq '..') {
2654                         if (@path_parts) {
2655                                 pop @path_parts;
2656                         } else {
2657                                 # link leads outside repository (outside top dir)
2658                                 return;
2659                         }
2660                 } else {
2661                         push @path_parts, $part;
2662                 }
2663         }
2664         $path = join('/', @path_parts);
2665
2666         return $path;
2667 }
2668
2669 # print tree entry (row of git_tree), but without encompassing <tr> element
2670 sub git_print_tree_entry {
2671         my ($t, $basedir, $hash_base, $have_blame) = @_;
2672
2673         my %base_key = ();
2674         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2675
2676         # The format of a table row is: mode list link.  Where mode is
2677         # the mode of the entry, list is the name of the entry, an href,
2678         # and link is the action links of the entry.
2679
2680         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2681         if ($t->{'type'} eq "blob") {
2682                 print "<td class=\"list\">" .
2683                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2684                                                file_name=>"$basedir$t->{'name'}", %base_key),
2685                                 -class => "list"}, esc_path($t->{'name'}));
2686                 if (S_ISLNK(oct $t->{'mode'})) {
2687                         my $link_target = git_get_link_target($t->{'hash'});
2688                         if ($link_target) {
2689                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2690                                 if (defined $norm_target) {
2691                                         print " -> " .
2692                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2693                                                                      file_name=>$norm_target),
2694                                                        -title => $norm_target}, esc_path($link_target));
2695                                 } else {
2696                                         print " -> " . esc_path($link_target);
2697                                 }
2698                         }
2699                 }
2700                 print "</td>\n";
2701                 print "<td class=\"link\">";
2702                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2703                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2704                               "blob");
2705                 if ($have_blame) {
2706                         print " | " .
2707                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2708                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2709                                       "blame");
2710                 }
2711                 if (defined $hash_base) {
2712                         print " | " .
2713                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2714                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2715                                       "history");
2716                 }
2717                 print " | " .
2718                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2719                                                file_name=>"$basedir$t->{'name'}")},
2720                                 "raw");
2721                 print "</td>\n";
2722
2723         } elsif ($t->{'type'} eq "tree") {
2724                 print "<td class=\"list\">";
2725                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2726                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2727                               esc_path($t->{'name'}));
2728                 print "</td>\n";
2729                 print "<td class=\"link\">";
2730                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2731                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2732                               "tree");
2733                 if (defined $hash_base) {
2734                         print " | " .
2735                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2736                                                      file_name=>"$basedir$t->{'name'}")},
2737                                       "history");
2738                 }
2739                 print "</td>\n";
2740         } else {
2741                 # unknown object: we can only present history for it
2742                 # (this includes 'commit' object, i.e. submodule support)
2743                 print "<td class=\"list\">" .
2744                       esc_path($t->{'name'}) .
2745                       "</td>\n";
2746                 print "<td class=\"link\">";
2747                 if (defined $hash_base) {
2748                         print $cgi->a({-href => href(action=>"history",
2749                                                      hash_base=>$hash_base,
2750                                                      file_name=>"$basedir$t->{'name'}")},
2751                                       "history");
2752                 }
2753                 print "</td>\n";
2754         }
2755 }
2756
2757 ## ......................................................................
2758 ## functions printing large fragments of HTML
2759
2760 sub fill_from_file_info {
2761         my ($diff, @parents) = @_;
2762
2763         $diff->{'from_file'} = [ ];
2764         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
2765         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2766                 if ($diff->{'status'}[$i] eq 'R' ||
2767                     $diff->{'status'}[$i] eq 'C') {
2768                         $diff->{'from_file'}[$i] =
2769                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
2770                 }
2771         }
2772
2773         return $diff;
2774 }
2775
2776 # parameters can be strings, or references to arrays of strings
2777 sub from_ids_eq {
2778         my ($a, $b) = @_;
2779
2780         if (ref($a) eq "ARRAY" && ref($b) eq "ARRAY" && @$a == @$b) {
2781                 for (my $i = 0; $i < @$a; ++$i) {
2782                         return 0 unless ($a->[$i] eq $b->[$i]);
2783                 }
2784                 return 1;
2785         } elsif (!ref($a) && !ref($b)) {
2786                 return $a eq $b;
2787         } else {
2788                 return 0;
2789         }
2790 }
2791
2792 sub is_deleted {
2793         my $diffinfo = shift;
2794
2795         return $diffinfo->{'to_id'} eq ('0' x 40);
2796 }
2797
2798 sub git_difftree_body {
2799         my ($difftree, $hash, @parents) = @_;
2800         my ($parent) = $parents[0];
2801         my ($have_blame) = gitweb_check_feature('blame');
2802         print "<div class=\"list_head\">\n";
2803         if ($#{$difftree} > 10) {
2804                 print(($#{$difftree} + 1) . " files changed:\n");
2805         }
2806         print "</div>\n";
2807
2808         print "<table class=\"" .
2809               (@parents > 1 ? "combined " : "") .
2810               "diff_tree\">\n";
2811
2812         # header only for combined diff in 'commitdiff' view
2813         my $has_header = @parents > 1 && $action eq 'commitdiff';
2814         if ($has_header) {
2815                 # table header
2816                 print "<thead><tr>\n" .
2817                        "<th></th><th></th>\n"; # filename, patchN link
2818                 for (my $i = 0; $i < @parents; $i++) {
2819                         my $par = $parents[$i];
2820                         print "<th>" .
2821                               $cgi->a({-href => href(action=>"commitdiff",
2822                                                      hash=>$hash, hash_parent=>$par),
2823                                        -title => 'commitdiff to parent number ' .
2824                                                   ($i+1) . ': ' . substr($par,0,7)},
2825                                       $i+1) .
2826                               "&nbsp;</th>\n";
2827                 }
2828                 print "</tr></thead>\n<tbody>\n";
2829         }
2830
2831         my $alternate = 1;
2832         my $patchno = 0;
2833         foreach my $line (@{$difftree}) {
2834                 my $diff;
2835                 if (ref($line) eq "HASH") {
2836                         # pre-parsed (or generated by hand)
2837                         $diff = $line;
2838                 } else {
2839                         $diff = parse_difftree_raw_line($line);
2840                 }
2841
2842                 if ($alternate) {
2843                         print "<tr class=\"dark\">\n";
2844                 } else {
2845                         print "<tr class=\"light\">\n";
2846                 }
2847                 $alternate ^= 1;
2848
2849                 if (exists $diff->{'nparents'}) { # combined diff
2850
2851                         fill_from_file_info($diff, @parents)
2852                                 unless exists $diff->{'from_file'};
2853
2854                         if (!is_deleted($diff)) {
2855                                 # file exists in the result (child) commit
2856                                 print "<td>" .
2857                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2858                                                              file_name=>$diff->{'to_file'},
2859                                                              hash_base=>$hash),
2860                                               -class => "list"}, esc_path($diff->{'to_file'})) .
2861                                       "</td>\n";
2862                         } else {
2863                                 print "<td>" .
2864                                       esc_path($diff->{'to_file'}) .
2865                                       "</td>\n";
2866                         }
2867
2868                         if ($action eq 'commitdiff') {
2869                                 # link to patch
2870                                 $patchno++;
2871                                 print "<td class=\"link\">" .
2872                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
2873                                       " | " .
2874                                       "</td>\n";
2875                         }
2876
2877                         my $has_history = 0;
2878                         my $not_deleted = 0;
2879                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
2880                                 my $hash_parent = $parents[$i];
2881                                 my $from_hash = $diff->{'from_id'}[$i];
2882                                 my $from_path = $diff->{'from_file'}[$i];
2883                                 my $status = $diff->{'status'}[$i];
2884
2885                                 $has_history ||= ($status ne 'A');
2886                                 $not_deleted ||= ($status ne 'D');
2887
2888                                 if ($status eq 'A') {
2889                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
2890                                 } elsif ($status eq 'D') {
2891                                         print "<td class=\"link\">" .
2892                                               $cgi->a({-href => href(action=>"blob",
2893                                                                      hash_base=>$hash,
2894                                                                      hash=>$from_hash,
2895                                                                      file_name=>$from_path)},
2896                                                       "blob" . ($i+1)) .
2897                                               " | </td>\n";
2898                                 } else {
2899                                         if ($diff->{'to_id'} eq $from_hash) {
2900                                                 print "<td class=\"link nochange\">";
2901                                         } else {
2902                                                 print "<td class=\"link\">";
2903                                         }
2904                                         print $cgi->a({-href => href(action=>"blobdiff",
2905                                                                      hash=>$diff->{'to_id'},
2906                                                                      hash_parent=>$from_hash,
2907                                                                      hash_base=>$hash,
2908                                                                      hash_parent_base=>$hash_parent,
2909                                                                      file_name=>$diff->{'to_file'},
2910                                                                      file_parent=>$from_path)},
2911                                                       "diff" . ($i+1)) .
2912                                               " | </td>\n";
2913                                 }
2914                         }
2915
2916                         print "<td class=\"link\">";
2917                         if ($not_deleted) {
2918                                 print $cgi->a({-href => href(action=>"blob",
2919                                                              hash=>$diff->{'to_id'},
2920                                                              file_name=>$diff->{'to_file'},
2921                                                              hash_base=>$hash)},
2922                                               "blob");
2923                                 print " | " if ($has_history);
2924                         }
2925                         if ($has_history) {
2926                                 print $cgi->a({-href => href(action=>"history",
2927                                                              file_name=>$diff->{'to_file'},
2928                                                              hash_base=>$hash)},
2929                                               "history");
2930                         }
2931                         print "</td>\n";
2932
2933                         print "</tr>\n";
2934                         next; # instead of 'else' clause, to avoid extra indent
2935                 }
2936                 # else ordinary diff
2937
2938                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2939                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2940                 if ($diff->{'to_mode'} ne ('0' x 6)) {
2941                         $to_mode_oct = oct $diff->{'to_mode'};
2942                         if (S_ISREG($to_mode_oct)) { # only for regular file
2943                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2944                         }
2945                         $to_file_type = file_type($diff->{'to_mode'});
2946                 }
2947                 if ($diff->{'from_mode'} ne ('0' x 6)) {
2948                         $from_mode_oct = oct $diff->{'from_mode'};
2949                         if (S_ISREG($to_mode_oct)) { # only for regular file
2950                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2951                         }
2952                         $from_file_type = file_type($diff->{'from_mode'});
2953                 }
2954
2955                 if ($diff->{'status'} eq "A") { # created
2956                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2957                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2958                         $mode_chng   .= "]</span>";
2959                         print "<td>";
2960                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2961                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
2962                                       -class => "list"}, esc_path($diff->{'file'}));
2963                         print "</td>\n";
2964                         print "<td>$mode_chng</td>\n";
2965                         print "<td class=\"link\">";
2966                         if ($action eq 'commitdiff') {
2967                                 # link to patch
2968                                 $patchno++;
2969                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2970                                 print " | ";
2971                         }
2972                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
2973                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
2974                                       "blob");
2975                         print "</td>\n";
2976
2977                 } elsif ($diff->{'status'} eq "D") { # deleted
2978                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2979                         print "<td>";
2980                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2981                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
2982                                        -class => "list"}, esc_path($diff->{'file'}));
2983                         print "</td>\n";
2984                         print "<td>$mode_chng</td>\n";
2985                         print "<td class=\"link\">";
2986                         if ($action eq 'commitdiff') {
2987                                 # link to patch
2988                                 $patchno++;
2989                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2990                                 print " | ";
2991                         }
2992                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
2993                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
2994                                       "blob") . " | ";
2995                         if ($have_blame) {
2996                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2997                                                              file_name=>$diff->{'file'})},
2998                                               "blame") . " | ";
2999                         }
3000                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3001                                                      file_name=>$diff->{'file'})},
3002                                       "history");
3003                         print "</td>\n";
3004
3005                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3006                         my $mode_chnge = "";
3007                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3008                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3009                                 if ($from_file_type ne $to_file_type) {
3010                                         $mode_chnge .= " from $from_file_type to $to_file_type";
3011                                 }
3012                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3013                                         if ($from_mode_str && $to_mode_str) {
3014                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3015                                         } elsif ($to_mode_str) {
3016                                                 $mode_chnge .= " mode: $to_mode_str";
3017                                         }
3018                                 }
3019                                 $mode_chnge .= "]</span>\n";
3020                         }
3021                         print "<td>";
3022                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3023                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3024                                       -class => "list"}, esc_path($diff->{'file'}));
3025                         print "</td>\n";
3026                         print "<td>$mode_chnge</td>\n";
3027                         print "<td class=\"link\">";
3028                         if ($action eq 'commitdiff') {
3029                                 # link to patch
3030                                 $patchno++;
3031                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3032                                       " | ";
3033                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3034                                 # "commit" view and modified file (not onlu mode changed)
3035                                 print $cgi->a({-href => href(action=>"blobdiff",
3036                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3037                                                              hash_base=>$hash, hash_parent_base=>$parent,
3038                                                              file_name=>$diff->{'file'})},
3039                                               "diff") .
3040                                       " | ";
3041                         }
3042                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3043                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3044                                        "blob") . " | ";
3045                         if ($have_blame) {
3046                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3047                                                              file_name=>$diff->{'file'})},
3048                                               "blame") . " | ";
3049                         }
3050                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3051                                                      file_name=>$diff->{'file'})},
3052                                       "history");
3053                         print "</td>\n";
3054
3055                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3056                         my %status_name = ('R' => 'moved', 'C' => 'copied');
3057                         my $nstatus = $status_name{$diff->{'status'}};
3058                         my $mode_chng = "";
3059                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3060                                 # mode also for directories, so we cannot use $to_mode_str
3061                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3062                         }
3063                         print "<td>" .
3064                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3065                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3066                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3067                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3068                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3069                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3070                                       -class => "list"}, esc_path($diff->{'from_file'})) .
3071                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3072                               "<td class=\"link\">";
3073                         if ($action eq 'commitdiff') {
3074                                 # link to patch
3075                                 $patchno++;
3076                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3077                                       " | ";
3078                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3079                                 # "commit" view and modified file (not only pure rename or copy)
3080                                 print $cgi->a({-href => href(action=>"blobdiff",
3081                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3082                                                              hash_base=>$hash, hash_parent_base=>$parent,
3083                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3084                                               "diff") .
3085                                       " | ";
3086                         }
3087                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3088                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
3089                                       "blob") . " | ";
3090                         if ($have_blame) {
3091                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3092                                                              file_name=>$diff->{'to_file'})},
3093                                               "blame") . " | ";
3094                         }
3095                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3096                                                     file_name=>$diff->{'to_file'})},
3097                                       "history");
3098                         print "</td>\n";
3099
3100                 } # we should not encounter Unmerged (U) or Unknown (X) status
3101                 print "</tr>\n";
3102         }
3103         print "</tbody>" if $has_header;
3104         print "</table>\n";
3105 }
3106
3107 sub git_patchset_body {
3108         my ($fd, $difftree, $hash, @hash_parents) = @_;
3109         my ($hash_parent) = $hash_parents[0];
3110
3111         my $patch_idx = 0;
3112         my $patch_number = 0;
3113         my $patch_line;
3114         my $diffinfo;
3115         my (%from, %to);
3116
3117         print "<div class=\"patchset\">\n";
3118
3119         # skip to first patch
3120         while ($patch_line = <$fd>) {
3121                 chomp $patch_line;
3122
3123                 last if ($patch_line =~ m/^diff /);
3124         }
3125
3126  PATCH:
3127         while ($patch_line) {
3128                 my @diff_header;
3129                 my ($from_id, $to_id);
3130
3131                 # git diff header
3132                 #assert($patch_line =~ m/^diff /) if DEBUG;
3133                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3134                 $patch_number++;
3135                 push @diff_header, $patch_line;
3136
3137                 # extended diff header
3138         EXTENDED_HEADER:
3139                 while ($patch_line = <$fd>) {
3140                         chomp $patch_line;
3141
3142                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3143
3144                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3145                                 $from_id = $1;
3146                                 $to_id   = $2;
3147                         } elsif ($patch_line =~ m/^index ((?:[0-9a-fA-F]{40},)+[0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
3148                                 $from_id = [ split(',', $1) ];
3149                                 $to_id   = $2;
3150                         }
3151
3152                         push @diff_header, $patch_line;
3153                 }
3154                 my $last_patch_line = $patch_line;
3155
3156                 # check if current patch belong to current raw line
3157                 # and parse raw git-diff line if needed
3158                 if (defined $diffinfo &&
3159                     defined $from_id && defined $to_id &&
3160                     from_ids_eq($diffinfo->{'from_id'}, $from_id) &&
3161                     $diffinfo->{'to_id'} eq $to_id) {
3162                         # this is continuation of a split patch
3163                         print "<div class=\"patch cont\">\n";
3164                 } else {
3165                         # advance raw git-diff output if needed
3166                         $patch_idx++ if defined $diffinfo;
3167
3168                         # compact combined diff output can have some patches skipped
3169                         # find which patch (using pathname of result) we are at now
3170                         my $to_name;
3171                         if ($diff_header[0] =~ m!^diff --cc "?(.*)"?$!) {
3172                                 $to_name = $1;
3173                         }
3174
3175                         do {
3176                                 # read and prepare patch information
3177                                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3178                                         # pre-parsed (or generated by hand)
3179                                         $diffinfo = $difftree->[$patch_idx];
3180                                 } else {
3181                                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3182                                 }
3183
3184                                 # check if current raw line has no patch (it got simplified)
3185                                 if (defined $to_name && $to_name ne $diffinfo->{'to_file'}) {
3186                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3187                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3188                                               "</div>\n";  # class="patch"
3189
3190                                         $patch_idx++;
3191                                         $patch_number++;
3192                                 }
3193                         } until (!defined $to_name || $to_name eq $diffinfo->{'to_file'} ||
3194                                  $patch_idx > $#$difftree);
3195                         # modifies %from, %to hashes
3196                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3197                         if ($diffinfo->{'nparents'}) {
3198                                 # combined diff
3199                                 $from{'file'} = [];
3200                                 $from{'href'} = [];
3201                                 fill_from_file_info($diffinfo, @hash_parents)
3202                                         unless exists $diffinfo->{'from_file'};
3203                                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
3204                                         $from{'file'}[$i] = $diffinfo->{'from_file'}[$i] || $diffinfo->{'to_file'};
3205                                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
3206                                                 $from{'href'}[$i] = href(action=>"blob",
3207                                                                          hash_base=>$hash_parents[$i],
3208                                                                          hash=>$diffinfo->{'from_id'}[$i],
3209                                                                          file_name=>$from{'file'}[$i]);
3210                                         } else {
3211                                                 $from{'href'}[$i] = undef;
3212                                         }
3213                                 }
3214                         } else {
3215                                 $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
3216                                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
3217                                         $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
3218                                                              hash=>$diffinfo->{'from_id'},
3219                                                              file_name=>$from{'file'});
3220                                 } else {
3221                                         delete $from{'href'};
3222                                 }
3223                         }
3224
3225                         $to{'file'} = $diffinfo->{'to_file'} || $diffinfo->{'file'};
3226                         if (!is_deleted($diffinfo)) { # file exists in result
3227                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
3228                                                    hash=>$diffinfo->{'to_id'},
3229                                                    file_name=>$to{'file'});
3230                         } else {
3231                                 delete $to{'href'};
3232                         }
3233                         # this is first patch for raw difftree line with $patch_idx index
3234                         # we index @$difftree array from 0, but number patches from 1
3235                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3236                 }
3237
3238                 # print "git diff" header
3239                 $patch_line = shift @diff_header;
3240                 print format_git_diff_header_line($patch_line, $diffinfo,
3241                                                   \%from, \%to);
3242
3243                 # print extended diff header
3244                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
3245         EXTENDED_HEADER:
3246                 foreach $patch_line (@diff_header) {
3247                         print format_extended_diff_header_line($patch_line, $diffinfo,
3248                                                                \%from, \%to);
3249                 }
3250                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
3251
3252                 # from-file/to-file diff header
3253                 $patch_line = $last_patch_line;
3254                 if (! $patch_line) {
3255                         print "</div>\n"; # class="patch"
3256                         last PATCH;
3257                 }
3258                 next PATCH if ($patch_line =~ m/^diff /);
3259                 #assert($patch_line =~ m/^---/) if DEBUG;
3260                 #assert($patch_line eq $last_patch_line) if DEBUG;
3261
3262                 $patch_line = <$fd>;
3263                 chomp $patch_line;
3264                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3265
3266                 print format_diff_from_to_header($last_patch_line, $patch_line,
3267                                                  $diffinfo, \%from, \%to,
3268                                                  @hash_parents);
3269
3270                 # the patch itself
3271         LINE:
3272                 while ($patch_line = <$fd>) {
3273                         chomp $patch_line;
3274
3275                         next PATCH if ($patch_line =~ m/^diff /);
3276
3277                         print format_diff_line($patch_line, \%from, \%to);
3278                 }
3279
3280         } continue {
3281                 print "</div>\n"; # class="patch"
3282         }
3283
3284         # for compact combined (--cc) format, with chunk and patch simpliciaction
3285         # patchset might be empty, but there might be unprocessed raw lines
3286         for ($patch_idx++ if $patch_number > 0;
3287              $patch_idx < @$difftree;
3288              $patch_idx++) {
3289                 # read and prepare patch information
3290                 if (ref($difftree->[$patch_idx]) eq "HASH") {
3291                         # pre-parsed (or generated by hand)
3292                         $diffinfo = $difftree->[$patch_idx];
3293                 } else {
3294                         $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
3295                 }
3296
3297                 # generate anchor for "patch" links in difftree / whatchanged part
3298                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3299                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3300                       "</div>\n";  # class="patch"
3301
3302                 $patch_number++;
3303         }
3304
3305         if ($patch_number == 0) {
3306                 if (@hash_parents > 1) {
3307                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3308                 } else {
3309                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3310                 }
3311         }
3312
3313         print "</div>\n"; # class="patchset"
3314 }
3315
3316 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3317
3318 sub git_project_list_body {
3319         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3320
3321         my ($check_forks) = gitweb_check_feature('forks');
3322
3323         my @projects;
3324         foreach my $pr (@$projlist) {
3325                 my (@aa) = git_get_last_activity($pr->{'path'});
3326                 unless (@aa) {
3327                         next;
3328                 }
3329                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
3330                 if (!defined $pr->{'descr'}) {
3331                         my $descr = git_get_project_description($pr->{'path'}) || "";
3332                         $pr->{'descr_long'} = to_utf8($descr);
3333                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3334                 }
3335                 if (!defined $pr->{'owner'}) {
3336                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3337                 }
3338                 if ($check_forks) {
3339                         my $pname = $pr->{'path'};
3340                         if (($pname =~ s/\.git$//) &&
3341                             ($pname !~ /\/$/) &&
3342                             (-d "$projectroot/$pname")) {
3343                                 $pr->{'forks'} = "-d $projectroot/$pname";
3344                         }
3345                         else {
3346                                 $pr->{'forks'} = 0;
3347                         }
3348                 }
3349                 push @projects, $pr;
3350         }
3351
3352         $order ||= $default_projects_order;
3353         $from = 0 unless defined $from;
3354         $to = $#projects if (!defined $to || $#projects < $to);
3355
3356         print "<table class=\"project_list\">\n";
3357         unless ($no_header) {
3358                 print "<tr>\n";
3359                 if ($check_forks) {
3360                         print "<th></th>\n";
3361                 }
3362                 if ($order eq "project") {
3363                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
3364                         print "<th>Project</th>\n";
3365                 } else {
3366                         print "<th>" .
3367                               $cgi->a({-href => href(project=>undef, order=>'project'),
3368                                        -class => "header"}, "Project") .
3369                               "</th>\n";
3370                 }
3371                 if ($order eq "descr") {
3372                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
3373                         print "<th>Description</th>\n";
3374                 } else {
3375                         print "<th>" .
3376                               $cgi->a({-href => href(project=>undef, order=>'descr'),
3377                                        -class => "header"}, "Description") .
3378                               "</th>\n";
3379                 }
3380                 if ($order eq "owner") {
3381                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
3382                         print "<th>Owner</th>\n";
3383                 } else {
3384                         print "<th>" .
3385                               $cgi->a({-href => href(project=>undef, order=>'owner'),
3386                                        -class => "header"}, "Owner") .
3387                               "</th>\n";
3388                 }
3389                 if ($order eq "age") {
3390                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
3391                         print "<th>Last Change</th>\n";
3392                 } else {
3393                         print "<th>" .
3394                               $cgi->a({-href => href(project=>undef, order=>'age'),
3395                                        -class => "header"}, "Last Change") .
3396                               "</th>\n";
3397                 }
3398                 print "<th></th>\n" .
3399                       "</tr>\n";
3400         }
3401         my $alternate = 1;
3402         for (my $i = $from; $i <= $to; $i++) {
3403                 my $pr = $projects[$i];
3404                 if ($alternate) {
3405                         print "<tr class=\"dark\">\n";
3406                 } else {
3407                         print "<tr class=\"light\">\n";
3408                 }
3409                 $alternate ^= 1;
3410                 if ($check_forks) {
3411                         print "<td>";
3412                         if ($pr->{'forks'}) {
3413                                 print "<!-- $pr->{'forks'} -->\n";
3414                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3415                         }
3416                         print "</td>\n";
3417                 }
3418                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3419                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3420                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3421                                         -class => "list", -title => $pr->{'descr_long'}},
3422                                         esc_html($pr->{'descr'})) . "</td>\n" .
3423                       "<td><i>" . esc_html(chop_str($pr->{'owner'}, 15)) . "</i></td>\n";
3424                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3425                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3426                       "<td class=\"link\">" .
3427                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3428                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3429                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3430                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3431                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3432                       "</td>\n" .
3433                       "</tr>\n";
3434         }
3435         if (defined $extra) {
3436                 print "<tr>\n";
3437                 if ($check_forks) {
3438                         print "<td></td>\n";
3439                 }
3440                 print "<td colspan=\"5\">$extra</td>\n" .
3441                       "</tr>\n";
3442         }
3443         print "</table>\n";
3444 }
3445
3446 sub git_shortlog_body {
3447         # uses global variable $project
3448         my ($commitlist, $from, $to, $refs, $extra) = @_;
3449
3450         $from = 0 unless defined $from;
3451         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3452
3453         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
3454         my $alternate = 1;
3455         for (my $i = $from; $i <= $to; $i++) {
3456                 my %co = %{$commitlist->[$i]};
3457                 my $commit = $co{'id'};
3458                 my $ref = format_ref_marker($refs, $commit);
3459                 if ($alternate) {
3460                         print "<tr class=\"dark\">\n";
3461                 } else {
3462                         print "<tr class=\"light\">\n";
3463                 }
3464                 $alternate ^= 1;
3465                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
3466                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3467                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
3468                       "<td>";
3469                 print format_subject_html($co{'title'}, $co{'title_short'},
3470                                           href(action=>"commit", hash=>$commit), $ref);
3471                 print "</td>\n" .
3472                       "<td class=\"link\">" .
3473                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
3474                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
3475                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
3476                 my $snapshot_links = format_snapshot_links($commit);
3477                 if (defined $snapshot_links) {
3478                         print " | " . $snapshot_links;
3479                 }
3480                 print "</td>\n" .
3481                       "</tr>\n";
3482         }
3483         if (defined $extra) {
3484                 print "<tr>\n" .
3485                       "<td colspan=\"4\">$extra</td>\n" .
3486                       "</tr>\n";
3487         }
3488         print "</table>\n";
3489 }
3490
3491 sub git_history_body {
3492         # Warning: assumes constant type (blob or tree) during history
3493         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
3494
3495         $from = 0 unless defined $from;
3496         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
3497
3498         print "<table class=\"history\" cellspacing=\"0\">\n";
3499         my $alternate = 1;
3500         for (my $i = $from; $i <= $to; $i++) {
3501                 my %co = %{$commitlist->[$i]};
3502                 if (!%co) {
3503                         next;
3504                 }
3505                 my $commit = $co{'id'};
3506
3507                 my $ref = format_ref_marker($refs, $commit);
3508
3509                 if ($alternate) {
3510                         print "<tr class=\"dark\">\n";
3511                 } else {
3512                         print "<tr class=\"light\">\n";
3513                 }
3514                 $alternate ^= 1;
3515                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3516                       # shortlog uses      chop_str($co{'author_name'}, 10)
3517                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
3518                       "<td>";
3519                 # originally git_history used chop_str($co{'title'}, 50)
3520                 print format_subject_html($co{'title'}, $co{'title_short'},
3521                                           href(action=>"commit", hash=>$commit), $ref);
3522                 print "</td>\n" .
3523                       "<td class=\"link\">" .
3524                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
3525                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
3526
3527                 if ($ftype eq 'blob') {
3528                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
3529                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
3530                         if (defined $blob_current && defined $blob_parent &&
3531                                         $blob_current ne $blob_parent) {
3532                                 print " | " .
3533                                         $cgi->a({-href => href(action=>"blobdiff",
3534                                                                hash=>$blob_current, hash_parent=>$blob_parent,
3535                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
3536                                                                file_name=>$file_name)},
3537                                                 "diff to current");
3538                         }
3539                 }
3540                 print "</td>\n" .
3541                       "</tr>\n";
3542         }
3543         if (defined $extra) {
3544                 print "<tr>\n" .
3545                       "<td colspan=\"4\">$extra</td>\n" .
3546                       "</tr>\n";
3547         }
3548         print "</table>\n";
3549 }
3550
3551 sub git_tags_body {
3552         # uses global variable $project
3553         my ($taglist, $from, $to, $extra) = @_;
3554         $from = 0 unless defined $from;
3555         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
3556
3557         print "<table class=\"tags\" cellspacing=\"0\">\n";
3558         my $alternate = 1;
3559         for (my $i = $from; $i <= $to; $i++) {
3560                 my $entry = $taglist->[$i];
3561                 my %tag = %$entry;
3562                 my $comment = $tag{'subject'};
3563                 my $comment_short;
3564                 if (defined $comment) {
3565                         $comment_short = chop_str($comment, 30, 5);
3566                 }
3567                 if ($alternate) {
3568                         print "<tr class=\"dark\">\n";
3569                 } else {
3570                         print "<tr class=\"light\">\n";
3571                 }
3572                 $alternate ^= 1;
3573                 if (defined $tag{'age'}) {
3574                         print "<td><i>$tag{'age'}</i></td>\n";
3575                 } else {
3576                         print "<td></td>\n";
3577                 }
3578                 print "<td>" .
3579                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
3580                                -class => "list name"}, esc_html($tag{'name'})) .
3581                       "</td>\n" .
3582                       "<td>";
3583                 if (defined $comment) {
3584                         print format_subject_html($comment, $comment_short,
3585                                                   href(action=>"tag", hash=>$tag{'id'}));
3586                 }
3587                 print "</td>\n" .
3588                       "<td class=\"selflink\">";
3589                 if ($tag{'type'} eq "tag") {
3590                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
3591                 } else {
3592                         print "&nbsp;";
3593                 }
3594                 print "</td>\n" .
3595                       "<td class=\"link\">" . " | " .
3596                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
3597                 if ($tag{'reftype'} eq "commit") {
3598                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
3599                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
3600                 } elsif ($tag{'reftype'} eq "blob") {
3601                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
3602                 }
3603                 print "</td>\n" .
3604                       "</tr>";
3605         }
3606         if (defined $extra) {
3607                 print "<tr>\n" .
3608                       "<td colspan=\"5\">$extra</td>\n" .
3609                       "</tr>\n";
3610         }
3611         print "</table>\n";
3612 }
3613
3614 sub git_heads_body {
3615         # uses global variable $project
3616         my ($headlist, $head, $from, $to, $extra) = @_;
3617         $from = 0 unless defined $from;
3618         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
3619
3620         print "<table class=\"heads\" cellspacing=\"0\">\n";
3621         my $alternate = 1;
3622         for (my $i = $from; $i <= $to; $i++) {
3623                 my $entry = $headlist->[$i];
3624                 my %ref = %$entry;
3625                 my $curr = $ref{'id'} eq $head;
3626                 if ($alternate) {
3627                         print "<tr class=\"dark\">\n";
3628                 } else {
3629                         print "<tr class=\"light\">\n";
3630                 }
3631                 $alternate ^= 1;
3632                 print "<td><i>$ref{'age'}</i></td>\n" .
3633                       ($curr ? "<td class=\"current_head\">" : "<td>") .
3634                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
3635                                -class => "list name"},esc_html($ref{'name'})) .
3636                       "</td>\n" .
3637                       "<td class=\"link\">" .
3638                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
3639                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
3640                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
3641                       "</td>\n" .
3642                       "</tr>";
3643         }
3644         if (defined $extra) {
3645                 print "<tr>\n" .
3646                       "<td colspan=\"3\">$extra</td>\n" .
3647                       "</tr>\n";
3648         }
3649         print "</table>\n";
3650 }
3651
3652 sub git_search_grep_body {
3653         my ($commitlist, $from, $to, $extra) = @_;
3654         $from = 0 unless defined $from;
3655         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3656
3657         print "<table class=\"grep\" cellspacing=\"0\">\n";
3658         my $alternate = 1;
3659         for (my $i = $from; $i <= $to; $i++) {
3660                 my %co = %{$commitlist->[$i]};
3661                 if (!%co) {
3662                         next;
3663                 }
3664                 my $commit = $co{'id'};
3665                 if ($alternate) {
3666                         print "<tr class=\"dark\">\n";
3667                 } else {
3668                         print "<tr class=\"light\">\n";
3669                 }
3670                 $alternate ^= 1;
3671                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3672                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3673                       "<td>" .
3674                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3675                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3676                 my $comment = $co{'comment'};
3677                 foreach my $line (@$comment) {
3678                         if ($line =~ m/^(.*)($search_regexp)(.*)$/i) {
3679                                 my $lead = esc_html($1) || "";
3680                                 $lead = chop_str($lead, 30, 10);
3681                                 my $match = esc_html($2) || "";
3682                                 my $trail = esc_html($3) || "";
3683                                 $trail = chop_str($trail, 30, 10);
3684                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
3685                                 print chop_str($text, 80, 5) . "<br/>\n";
3686                         }
3687                 }
3688                 print "</td>\n" .
3689                       "<td class=\"link\">" .
3690                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3691                       " | " .
3692                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3693                 print "</td>\n" .
3694                       "</tr>\n";
3695         }
3696         if (defined $extra) {
3697                 print "<tr>\n" .
3698                       "<td colspan=\"3\">$extra</td>\n" .
3699                       "</tr>\n";
3700         }
3701         print "</table>\n";
3702 }
3703
3704 ## ======================================================================
3705 ## ======================================================================
3706 ## actions
3707
3708 sub git_project_list {
3709         my $order = $cgi->param('o');
3710         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3711                 die_error(undef, "Unknown order parameter");
3712         }
3713
3714         my @list = git_get_projects_list();
3715         if (!@list) {
3716                 die_error(undef, "No projects found");
3717         }
3718
3719         git_header_html();
3720         if (-f $home_text) {
3721                 print "<div class=\"index_include\">\n";
3722                 open (my $fd, $home_text);
3723                 print <$fd>;
3724                 close $fd;
3725                 print "</div>\n";
3726         }
3727         git_project_list_body(\@list, $order);
3728         git_footer_html();
3729 }
3730
3731 sub git_forks {
3732         my $order = $cgi->param('o');
3733         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3734                 die_error(undef, "Unknown order parameter");
3735         }
3736
3737         my @list = git_get_projects_list($project);
3738         if (!@list) {
3739                 die_error(undef, "No forks found");
3740         }
3741
3742         git_header_html();
3743         git_print_page_nav('','');
3744         git_print_header_div('summary', "$project forks");
3745         git_project_list_body(\@list, $order);
3746         git_footer_html();
3747 }
3748
3749 sub git_project_index {
3750         my @projects = git_get_projects_list($project);
3751
3752         print $cgi->header(
3753                 -type => 'text/plain',
3754                 -charset => 'utf-8',
3755                 -content_disposition => 'inline; filename="index.aux"');
3756
3757         foreach my $pr (@projects) {
3758                 if (!exists $pr->{'owner'}) {
3759                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
3760                 }
3761
3762                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3763                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3764                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3765                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3766                 $path  =~ s/ /\+/g;
3767                 $owner =~ s/ /\+/g;
3768
3769                 print "$path $owner\n";
3770         }
3771 }
3772
3773 sub git_summary {
3774         my $descr = git_get_project_description($project) || "none";
3775         my %co = parse_commit("HEAD");
3776         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
3777         my $head = $co{'id'};
3778
3779         my $owner = git_get_project_owner($project);
3780
3781         my $refs = git_get_references();
3782         # These get_*_list functions return one more to allow us to see if
3783         # there are more ...
3784         my @taglist  = git_get_tags_list(16);
3785         my @headlist = git_get_heads_list(16);
3786         my @forklist;
3787         my ($check_forks) = gitweb_check_feature('forks');
3788
3789         if ($check_forks) {
3790                 @forklist = git_get_projects_list($project);
3791         }
3792
3793         git_header_html();
3794         git_print_page_nav('summary','', $head);
3795
3796         print "<div class=\"title\">&nbsp;</div>\n";
3797         print "<table cellspacing=\"0\">\n" .
3798               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3799               "<tr><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
3800         if (defined $cd{'rfc2822'}) {
3801                 print "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3802         }
3803
3804         # use per project git URL list in $projectroot/$project/cloneurl
3805         # or make project git URL from git base URL and project name
3806         my $url_tag = "URL";
3807         my @url_list = git_get_project_url_list($project);
3808         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3809         foreach my $git_url (@url_list) {
3810                 next unless $git_url;
3811                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3812                 $url_tag = "";
3813         }
3814         print "</table>\n";
3815
3816         if (-s "$projectroot/$project/README.html") {
3817                 if (open my $fd, "$projectroot/$project/README.html") {
3818                         print "<div class=\"title\">readme</div>\n";
3819                         print $_ while (<$fd>);
3820                         close $fd;
3821                 }
3822         }
3823
3824         # we need to request one more than 16 (0..15) to check if
3825         # those 16 are all
3826         my @commitlist = $head ? parse_commits($head, 17) : ();
3827         if (@commitlist) {
3828                 git_print_header_div('shortlog');
3829                 git_shortlog_body(\@commitlist, 0, 15, $refs,
3830                                   $#commitlist <=  15 ? undef :
3831                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
3832         }
3833
3834         if (@taglist) {
3835                 git_print_header_div('tags');
3836                 git_tags_body(\@taglist, 0, 15,
3837                               $#taglist <=  15 ? undef :
3838                               $cgi->a({-href => href(action=>"tags")}, "..."));
3839         }
3840
3841         if (@headlist) {
3842                 git_print_header_div('heads');
3843                 git_heads_body(\@headlist, $head, 0, 15,
3844                                $#headlist <= 15 ? undef :
3845                                $cgi->a({-href => href(action=>"heads")}, "..."));
3846         }
3847
3848         if (@forklist) {
3849                 git_print_header_div('forks');
3850                 git_project_list_body(\@forklist, undef, 0, 15,
3851                                       $#forklist <= 15 ? undef :
3852                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3853                                       'noheader');
3854         }
3855
3856         git_footer_html();
3857 }
3858
3859 sub git_tag {
3860         my $head = git_get_head_hash($project);
3861         git_header_html();
3862         git_print_page_nav('','', $head,undef,$head);
3863         my %tag = parse_tag($hash);
3864
3865         if (! %tag) {
3866                 die_error(undef, "Unknown tag object");
3867         }
3868
3869         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3870         print "<div class=\"title_text\">\n" .
3871               "<table cellspacing=\"0\">\n" .
3872               "<tr>\n" .
3873               "<td>object</td>\n" .
3874               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3875                                $tag{'object'}) . "</td>\n" .
3876               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3877                                               $tag{'type'}) . "</td>\n" .
3878               "</tr>\n";
3879         if (defined($tag{'author'})) {
3880                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3881                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3882                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3883                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3884                         "</td></tr>\n";
3885         }
3886         print "</table>\n\n" .
3887               "</div>\n";
3888         print "<div class=\"page_body\">";
3889         my $comment = $tag{'comment'};
3890         foreach my $line (@$comment) {
3891                 chomp $line;
3892                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3893         }
3894         print "</div>\n";
3895         git_footer_html();
3896 }
3897
3898 sub git_blame2 {
3899         my $fd;
3900         my $ftype;
3901
3902         my ($have_blame) = gitweb_check_feature('blame');
3903         if (!$have_blame) {
3904                 die_error('403 Permission denied', "Permission denied");
3905         }
3906         die_error('404 Not Found', "File name not defined") if (!$file_name);
3907         $hash_base ||= git_get_head_hash($project);
3908         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3909         my %co = parse_commit($hash_base)
3910                 or die_error(undef, "Reading commit failed");
3911         if (!defined $hash) {
3912                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3913                         or die_error(undef, "Error looking up file");
3914         }
3915         $ftype = git_get_type($hash);
3916         if ($ftype !~ "blob") {
3917                 die_error('400 Bad Request', "Object is not a blob");
3918         }
3919         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3920               $file_name, $hash_base)
3921                 or die_error(undef, "Open git-blame failed");
3922         git_header_html();
3923         my $formats_nav =
3924                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3925                         "blob") .
3926                 " | " .
3927                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3928                         "history") .
3929                 " | " .
3930                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3931                         "HEAD");
3932         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3933         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3934         git_print_page_path($file_name, $ftype, $hash_base);
3935         my @rev_color = (qw(light2 dark2));
3936         my $num_colors = scalar(@rev_color);
3937         my $current_color = 0;
3938         my $last_rev;
3939         print <<HTML;
3940 <div class="page_body">
3941 <table class="blame">
3942 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3943 HTML
3944         my %metainfo = ();
3945         while (1) {
3946                 $_ = <$fd>;
3947                 last unless defined $_;
3948                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3949                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3950                 if (!exists $metainfo{$full_rev}) {
3951                         $metainfo{$full_rev} = {};
3952                 }
3953                 my $meta = $metainfo{$full_rev};
3954                 while (<$fd>) {
3955                         last if (s/^\t//);
3956                         if (/^(\S+) (.*)$/) {
3957                                 $meta->{$1} = $2;
3958                         }
3959                 }
3960                 my $data = $_;
3961                 chomp $data;
3962                 my $rev = substr($full_rev, 0, 8);
3963                 my $author = $meta->{'author'};
3964                 my %date = parse_date($meta->{'author-time'},
3965                                       $meta->{'author-tz'});
3966                 my $date = $date{'iso-tz'};
3967                 if ($group_size) {
3968                         $current_color = ++$current_color % $num_colors;
3969                 }
3970                 print "<tr class=\"$rev_color[$current_color]\">\n";
3971                 if ($group_size) {
3972                         print "<td class=\"sha1\"";
3973                         print " title=\"". esc_html($author) . ", $date\"";
3974                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3975                         print ">";
3976                         print $cgi->a({-href => href(action=>"commit",
3977                                                      hash=>$full_rev,
3978                                                      file_name=>$file_name)},
3979                                       esc_html($rev));
3980                         print "</td>\n";
3981                 }
3982                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3983                         or die_error(undef, "Open git-rev-parse failed");
3984                 my $parent_commit = <$dd>;
3985                 close $dd;
3986                 chomp($parent_commit);
3987                 my $blamed = href(action => 'blame',
3988                                   file_name => $meta->{'filename'},
3989                                   hash_base => $parent_commit);
3990                 print "<td class=\"linenr\">";
3991                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3992                                 -id => "l$lineno",
3993                                 -class => "linenr" },
3994                               esc_html($lineno));
3995                 print "</td>";
3996                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3997                 print "</tr>\n";
3998         }
3999         print "</table>\n";
4000         print "</div>";
4001         close $fd
4002                 or print "Reading blob failed\n";
4003         git_footer_html();
4004 }
4005
4006 sub git_blame {
4007         my $fd;
4008
4009         my ($have_blame) = gitweb_check_feature('blame');
4010         if (!$have_blame) {
4011                 die_error('403 Permission denied', "Permission denied");
4012         }
4013         die_error('404 Not Found', "File name not defined") if (!$file_name);
4014         $hash_base ||= git_get_head_hash($project);
4015         die_error(undef, "Couldn't find base commit") unless ($hash_base);
4016         my %co = parse_commit($hash_base)
4017                 or die_error(undef, "Reading commit failed");
4018         if (!defined $hash) {
4019                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4020                         or die_error(undef, "Error lookup file");
4021         }
4022         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
4023                 or die_error(undef, "Open git-annotate failed");
4024         git_header_html();
4025         my $formats_nav =
4026                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4027                         "blob") .
4028                 " | " .
4029                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
4030                         "history") .
4031                 " | " .
4032                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4033                         "HEAD");
4034         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4035         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4036         git_print_page_path($file_name, 'blob', $hash_base);
4037         print "<div class=\"page_body\">\n";
4038         print <<HTML;
4039 <table class="blame">
4040   <tr>
4041     <th>Commit</th>
4042     <th>Age</th>
4043     <th>Author</th>
4044     <th>Line</th>
4045     <th>Data</th>
4046   </tr>
4047 HTML
4048         my @line_class = (qw(light dark));
4049         my $line_class_len = scalar (@line_class);
4050         my $line_class_num = $#line_class;
4051         while (my $line = <$fd>) {
4052                 my $long_rev;
4053                 my $short_rev;
4054                 my $author;
4055                 my $time;
4056                 my $lineno;
4057                 my $data;
4058                 my $age;
4059                 my $age_str;
4060                 my $age_class;
4061
4062                 chomp $line;
4063                 $line_class_num = ($line_class_num + 1) % $line_class_len;
4064
4065                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
4066                         $long_rev = $1;
4067                         $author   = $2;
4068                         $time     = $3;
4069                         $lineno   = $4;
4070                         $data     = $5;
4071                 } else {
4072                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
4073                         next;
4074                 }
4075                 $short_rev  = substr ($long_rev, 0, 8);
4076                 $age        = time () - $time;
4077                 $age_str    = age_string ($age);
4078                 $age_str    =~ s/ /&nbsp;/g;
4079                 $age_class  = age_class($age);
4080                 $author     = esc_html ($author);
4081                 $author     =~ s/ /&nbsp;/g;
4082
4083                 $data = untabify($data);
4084                 $data = esc_html ($data);
4085
4086                 print <<HTML;
4087   <tr class="$line_class[$line_class_num]">
4088     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
4089     <td class="$age_class">$age_str</td>
4090     <td>$author</td>
4091     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
4092     <td class="pre">$data</td>
4093   </tr>
4094 HTML
4095         } # while (my $line = <$fd>)
4096         print "</table>\n\n";
4097         close $fd
4098                 or print "Reading blob failed.\n";
4099         print "</div>";
4100         git_footer_html();
4101 }
4102
4103 sub git_tags {
4104         my $head = git_get_head_hash($project);
4105         git_header_html();
4106         git_print_page_nav('','', $head,undef,$head);
4107         git_print_header_div('summary', $project);
4108
4109         my @tagslist = git_get_tags_list();
4110         if (@tagslist) {
4111                 git_tags_body(\@tagslist);
4112         }
4113         git_footer_html();
4114 }
4115
4116 sub git_heads {
4117         my $head = git_get_head_hash($project);
4118         git_header_html();
4119         git_print_page_nav('','', $head,undef,$head);
4120         git_print_header_div('summary', $project);
4121
4122         my @headslist = git_get_heads_list();
4123         if (@headslist) {
4124                 git_heads_body(\@headslist, $head);
4125         }
4126         git_footer_html();
4127 }
4128
4129 sub git_blob_plain {
4130         my $expires;
4131
4132         if (!defined $hash) {
4133                 if (defined $file_name) {
4134                         my $base = $hash_base || git_get_head_hash($project);
4135                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4136                                 or die_error(undef, "Error lookup file");
4137                 } else {
4138                         die_error(undef, "No file name defined");
4139                 }
4140         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4141                 # blobs defined by non-textual hash id's can be cached
4142                 $expires = "+1d";
4143         }
4144
4145         my $type = shift;
4146         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4147                 or die_error(undef, "Couldn't cat $file_name, $hash");
4148
4149         $type ||= blob_mimetype($fd, $file_name);
4150
4151         # save as filename, even when no $file_name is given
4152         my $save_as = "$hash";
4153         if (defined $file_name) {
4154                 $save_as = $file_name;
4155         } elsif ($type =~ m/^text\//) {
4156                 $save_as .= '.txt';
4157         }
4158
4159         print $cgi->header(
4160                 -type => "$type",
4161                 -expires=>$expires,
4162                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
4163         undef $/;
4164         binmode STDOUT, ':raw';
4165         print <$fd>;
4166         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4167         $/ = "\n";
4168         close $fd;
4169 }
4170
4171 sub git_blob {
4172         my $expires;
4173
4174         if (!defined $hash) {
4175                 if (defined $file_name) {
4176                         my $base = $hash_base || git_get_head_hash($project);
4177                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4178                                 or die_error(undef, "Error lookup file");
4179                 } else {
4180                         die_error(undef, "No file name defined");
4181                 }
4182         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4183                 # blobs defined by non-textual hash id's can be cached
4184                 $expires = "+1d";
4185         }
4186
4187         my ($have_blame) = gitweb_check_feature('blame');
4188         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4189                 or die_error(undef, "Couldn't cat $file_name, $hash");
4190         my $mimetype = blob_mimetype($fd, $file_name);
4191         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
4192                 close $fd;
4193                 return git_blob_plain($mimetype);
4194         }
4195         # we can have blame only for text/* mimetype
4196         $have_blame &&= ($mimetype =~ m!^text/!);
4197
4198         git_header_html(undef, $expires);
4199         my $formats_nav = '';
4200         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4201                 if (defined $file_name) {
4202                         if ($have_blame) {
4203                                 $formats_nav .=
4204                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
4205                                                                hash=>$hash, file_name=>$file_name)},
4206                                                 "blame") .
4207                                         " | ";
4208                         }
4209                         $formats_nav .=
4210                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4211                                                        hash=>$hash, file_name=>$file_name)},
4212                                         "history") .
4213                                 " | " .
4214                                 $cgi->a({-href => href(action=>"blob_plain",
4215                                                        hash=>$hash, file_name=>$file_name)},
4216                                         "raw") .
4217                                 " | " .
4218                                 $cgi->a({-href => href(action=>"blob",
4219                                                        hash_base=>"HEAD", file_name=>$file_name)},
4220                                         "HEAD");
4221                 } else {
4222                         $formats_nav .=
4223                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
4224                 }
4225                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4226                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4227         } else {
4228                 print "<div class=\"page_nav\">\n" .
4229                       "<br/><br/></div>\n" .
4230                       "<div class=\"title\">$hash</div>\n";
4231         }
4232         git_print_page_path($file_name, "blob", $hash_base);
4233         print "<div class=\"page_body\">\n";
4234         if ($mimetype =~ m!^text/!) {
4235                 my $nr;
4236                 while (my $line = <$fd>) {
4237                         chomp $line;
4238                         $nr++;
4239                         $line = untabify($line);
4240                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4241                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4242                 }
4243         } elsif ($mimetype =~ m!^image/!) {
4244                 print qq!<img type="$mimetype"!;
4245                 if ($file_name) {
4246                         print qq! alt="$file_name" title="$file_name"!;
4247                 }
4248                 print qq! src="! .
4249                       href(action=>"blob_plain", hash=>$hash,
4250                            hash_base=>$hash_base, file_name=>$file_name) .
4251                       qq!" />\n!;
4252         }
4253         close $fd
4254                 or print "Reading blob failed.\n";
4255         print "</div>";
4256         git_footer_html();
4257 }
4258
4259 sub git_tree {
4260         if (!defined $hash_base) {
4261                 $hash_base = "HEAD";
4262         }
4263         if (!defined $hash) {
4264                 if (defined $file_name) {
4265                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4266                 } else {
4267                         $hash = $hash_base;
4268                 }
4269         }
4270         $/ = "\0";
4271         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4272                 or die_error(undef, "Open git-ls-tree failed");
4273         my @entries = map { chomp; $_ } <$fd>;
4274         close $fd or die_error(undef, "Reading tree failed");
4275         $/ = "\n";
4276
4277         my $refs = git_get_references();
4278         my $ref = format_ref_marker($refs, $hash_base);
4279         git_header_html();
4280         my $basedir = '';
4281         my ($have_blame) = gitweb_check_feature('blame');
4282         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4283                 my @views_nav = ();
4284                 if (defined $file_name) {
4285                         push @views_nav,
4286                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
4287                                                        hash=>$hash, file_name=>$file_name)},
4288                                         "history"),
4289                                 $cgi->a({-href => href(action=>"tree",
4290                                                        hash_base=>"HEAD", file_name=>$file_name)},
4291                                         "HEAD"),
4292                 }
4293                 my $snapshot_links = format_snapshot_links($hash);
4294                 if (defined $snapshot_links) {
4295                         # FIXME: Should be available when we have no hash base as well.
4296                         push @views_nav, $snapshot_links;
4297                 }
4298                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4299                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4300         } else {
4301                 undef $hash_base;
4302                 print "<div class=\"page_nav\">\n";
4303                 print "<br/><br/></div>\n";
4304                 print "<div class=\"title\">$hash</div>\n";
4305         }
4306         if (defined $file_name) {
4307                 $basedir = $file_name;
4308                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4309                         $basedir .= '/';
4310                 }
4311         }
4312         git_print_page_path($file_name, 'tree', $hash_base);
4313         print "<div class=\"page_body\">\n";
4314         print "<table cellspacing=\"0\">\n";
4315         my $alternate = 1;
4316         # '..' (top directory) link if possible
4317         if (defined $hash_base &&
4318             defined $file_name && $file_name =~ m![^/]+$!) {
4319                 if ($alternate) {
4320                         print "<tr class=\"dark\">\n";
4321                 } else {
4322                         print "<tr class=\"light\">\n";
4323                 }
4324                 $alternate ^= 1;
4325
4326                 my $up = $file_name;
4327                 $up =~ s!/?[^/]+$!!;
4328                 undef $up unless $up;
4329                 # based on git_print_tree_entry
4330                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4331                 print '<td class="list">';
4332                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4333                                              file_name=>$up)},
4334                               "..");
4335                 print "</td>\n";
4336                 print "<td class=\"link\"></td>\n";
4337
4338                 print "</tr>\n";
4339         }
4340         foreach my $line (@entries) {
4341                 my %t = parse_ls_tree_line($line, -z => 1);
4342
4343                 if ($alternate) {
4344                         print "<tr class=\"dark\">\n";
4345                 } else {
4346                         print "<tr class=\"light\">\n";
4347                 }
4348                 $alternate ^= 1;
4349
4350                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4351
4352                 print "</tr>\n";
4353         }
4354         print "</table>\n" .
4355               "</div>";
4356         git_footer_html();
4357 }
4358
4359 sub git_snapshot {
4360         my @supported_fmts = gitweb_check_feature('snapshot');
4361         @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4362
4363         my $format = $cgi->param('sf');
4364         if (!@supported_fmts) {
4365                 die_error('403 Permission denied', "Permission denied");
4366         }
4367         # default to first supported snapshot format
4368         $format ||= $supported_fmts[0];
4369         if ($format !~ m/^[a-z0-9]+$/) {
4370                 die_error(undef, "Invalid snapshot format parameter");
4371         } elsif (!exists($known_snapshot_formats{$format})) {
4372                 die_error(undef, "Unknown snapshot format");
4373         } elsif (!grep($_ eq $format, @supported_fmts)) {
4374                 die_error(undef, "Unsupported snapshot format");
4375         }
4376
4377         if (!defined $hash) {
4378                 $hash = git_get_head_hash($project);
4379         }
4380
4381         my $git_command = git_cmd_str();
4382         my $name = $project;
4383         $name =~ s,([^/])/*\.git$,$1,;
4384         $name = basename($name);
4385         my $filename = to_utf8($name);
4386         $name =~ s/\047/\047\\\047\047/g;
4387         my $cmd;
4388         $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4389         $cmd = "$git_command archive " .
4390                 "--format=$known_snapshot_formats{$format}{'format'} " .
4391                 "--prefix=\'$name\'/ $hash";
4392         if (exists $known_snapshot_formats{$format}{'compressor'}) {
4393                 $cmd .= ' | ' . join ' ', @{$known_snapshot_formats{$format}{'compressor'}};
4394         }
4395
4396         print $cgi->header(
4397                 -type => $known_snapshot_formats{$format}{'type'},
4398                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4399                 -status => '200 OK');
4400
4401         open my $fd, "-|", $cmd
4402                 or die_error(undef, "Execute git-archive failed");
4403         binmode STDOUT, ':raw';
4404         print <$fd>;
4405         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4406         close $fd;
4407 }
4408
4409 sub git_log {
4410         my $head = git_get_head_hash($project);
4411         if (!defined $hash) {
4412                 $hash = $head;
4413         }
4414         if (!defined $page) {
4415                 $page = 0;
4416         }
4417         my $refs = git_get_references();
4418
4419         my @commitlist = parse_commits($hash, 101, (100 * $page));
4420
4421         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
4422
4423         git_header_html();
4424         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4425
4426         if (!@commitlist) {
4427                 my %co = parse_commit($hash);
4428
4429                 git_print_header_div('summary', $project);
4430                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4431         }
4432         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4433         for (my $i = 0; $i <= $to; $i++) {
4434                 my %co = %{$commitlist[$i]};
4435                 next if !%co;
4436                 my $commit = $co{'id'};
4437                 my $ref = format_ref_marker($refs, $commit);
4438                 my %ad = parse_date($co{'author_epoch'});
4439                 git_print_header_div('commit',
4440                                "<span class=\"age\">$co{'age_string'}</span>" .
4441                                esc_html($co{'title'}) . $ref,
4442                                $commit);
4443                 print "<div class=\"title_text\">\n" .
4444                       "<div class=\"log_link\">\n" .
4445                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4446                       " | " .
4447                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4448                       " | " .
4449                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4450                       "<br/>\n" .
4451                       "</div>\n" .
4452                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4453                       "</div>\n";
4454
4455                 print "<div class=\"log_body\">\n";
4456                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4457                 print "</div>\n";
4458         }
4459         if ($#commitlist >= 100) {
4460                 print "<div class=\"page_nav\">\n";
4461                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
4462                                -accesskey => "n", -title => "Alt-n"}, "next");
4463                 print "</div>\n";
4464         }
4465         git_footer_html();
4466 }
4467
4468 sub git_commit {
4469         $hash ||= $hash_base || "HEAD";
4470         my %co = parse_commit($hash);
4471         if (!%co) {
4472                 die_error(undef, "Unknown commit object");
4473         }
4474         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4475         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4476
4477         my $parent  = $co{'parent'};
4478         my $parents = $co{'parents'}; # listref
4479
4480         # we need to prepare $formats_nav before any parameter munging
4481         my $formats_nav;
4482         if (!defined $parent) {
4483                 # --root commitdiff
4484                 $formats_nav .= '(initial)';
4485         } elsif (@$parents == 1) {
4486                 # single parent commit
4487                 $formats_nav .=
4488                         '(parent: ' .
4489                         $cgi->a({-href => href(action=>"commit",
4490                                                hash=>$parent)},
4491                                 esc_html(substr($parent, 0, 7))) .
4492                         ')';
4493         } else {
4494                 # merge commit
4495                 $formats_nav .=
4496                         '(merge: ' .
4497                         join(' ', map {
4498                                 $cgi->a({-href => href(action=>"commit",
4499                                                        hash=>$_)},
4500                                         esc_html(substr($_, 0, 7)));
4501                         } @$parents ) .
4502                         ')';
4503         }
4504
4505         if (!defined $parent) {
4506                 $parent = "--root";
4507         }
4508         my @difftree;
4509         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4510                 @diff_opts,
4511                 (@$parents <= 1 ? $parent : '-c'),
4512                 $hash, "--"
4513                 or die_error(undef, "Open git-diff-tree failed");
4514         @difftree = map { chomp; $_ } <$fd>;
4515         close $fd or die_error(undef, "Reading git-diff-tree failed");
4516
4517         # non-textual hash id's can be cached
4518         my $expires;
4519         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4520                 $expires = "+1d";
4521         }
4522         my $refs = git_get_references();
4523         my $ref = format_ref_marker($refs, $co{'id'});
4524
4525         git_header_html(undef, $expires);
4526         git_print_page_nav('commit', '',
4527                            $hash, $co{'tree'}, $hash,
4528                            $formats_nav);
4529
4530         if (defined $co{'parent'}) {
4531                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4532         } else {
4533                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
4534         }
4535         print "<div class=\"title_text\">\n" .
4536               "<table cellspacing=\"0\">\n";
4537         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
4538               "<tr>" .
4539               "<td></td><td> $ad{'rfc2822'}";
4540         if ($ad{'hour_local'} < 6) {
4541                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
4542                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4543         } else {
4544                 printf(" (%02d:%02d %s)",
4545                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
4546         }
4547         print "</td>" .
4548               "</tr>\n";
4549         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
4550         print "<tr><td></td><td> $cd{'rfc2822'}" .
4551               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
4552               "</td></tr>\n";
4553         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
4554         print "<tr>" .
4555               "<td>tree</td>" .
4556               "<td class=\"sha1\">" .
4557               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
4558                        class => "list"}, $co{'tree'}) .
4559               "</td>" .
4560               "<td class=\"link\">" .
4561               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
4562                       "tree");
4563         my $snapshot_links = format_snapshot_links($hash);
4564         if (defined $snapshot_links) {
4565                 print " | " . $snapshot_links;
4566         }
4567         print "</td>" .
4568               "</tr>\n";
4569
4570         foreach my $par (@$parents) {
4571                 print "<tr>" .
4572                       "<td>parent</td>" .
4573                       "<td class=\"sha1\">" .
4574                       $cgi->a({-href => href(action=>"commit", hash=>$par),
4575                                class => "list"}, $par) .
4576                       "</td>" .
4577                       "<td class=\"link\">" .
4578                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
4579                       " | " .
4580                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
4581                       "</td>" .
4582                       "</tr>\n";
4583         }
4584         print "</table>".
4585               "</div>\n";
4586
4587         print "<div class=\"page_body\">\n";
4588         git_print_log($co{'comment'});
4589         print "</div>\n";
4590
4591         git_difftree_body(\@difftree, $hash, @$parents);
4592
4593         git_footer_html();
4594 }
4595
4596 sub git_object {
4597         # object is defined by:
4598         # - hash or hash_base alone
4599         # - hash_base and file_name
4600         my $type;
4601
4602         # - hash or hash_base alone
4603         if ($hash || ($hash_base && !defined $file_name)) {
4604                 my $object_id = $hash || $hash_base;
4605
4606                 my $git_command = git_cmd_str();
4607                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
4608                         or die_error('404 Not Found', "Object does not exist");
4609                 $type = <$fd>;
4610                 chomp $type;
4611                 close $fd
4612                         or die_error('404 Not Found', "Object does not exist");
4613
4614         # - hash_base and file_name
4615         } elsif ($hash_base && defined $file_name) {
4616                 $file_name =~ s,/+$,,;
4617
4618                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
4619                         or die_error('404 Not Found', "Base object does not exist");
4620
4621                 # here errors should not hapen
4622                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
4623                         or die_error(undef, "Open git-ls-tree failed");
4624                 my $line = <$fd>;
4625                 close $fd;
4626
4627                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
4628                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
4629                         die_error('404 Not Found', "File or directory for given base does not exist");
4630                 }
4631                 $type = $2;
4632                 $hash = $3;
4633         } else {
4634                 die_error('404 Not Found', "Not enough information to find object");
4635         }
4636
4637         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
4638                                           hash=>$hash, hash_base=>$hash_base,
4639                                           file_name=>$file_name),
4640                              -status => '302 Found');
4641 }
4642
4643 sub git_blobdiff {
4644         my $format = shift || 'html';
4645
4646         my $fd;
4647         my @difftree;
4648         my %diffinfo;
4649         my $expires;
4650
4651         # preparing $fd and %diffinfo for git_patchset_body
4652         # new style URI
4653         if (defined $hash_base && defined $hash_parent_base) {
4654                 if (defined $file_name) {
4655                         # read raw output
4656                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4657                                 $hash_parent_base, $hash_base,
4658                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
4659                                 or die_error(undef, "Open git-diff-tree failed");
4660                         @difftree = map { chomp; $_ } <$fd>;
4661                         close $fd
4662                                 or die_error(undef, "Reading git-diff-tree failed");
4663                         @difftree
4664                                 or die_error('404 Not Found', "Blob diff not found");
4665
4666                 } elsif (defined $hash &&
4667                          $hash =~ /[0-9a-fA-F]{40}/) {
4668                         # try to find filename from $hash
4669
4670                         # read filtered raw output
4671                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4672                                 $hash_parent_base, $hash_base, "--"
4673                                 or die_error(undef, "Open git-diff-tree failed");
4674                         @difftree =
4675                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
4676                                 # $hash == to_id
4677                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
4678                                 map { chomp; $_ } <$fd>;
4679                         close $fd
4680                                 or die_error(undef, "Reading git-diff-tree failed");
4681                         @difftree
4682                                 or die_error('404 Not Found', "Blob diff not found");
4683
4684                 } else {
4685                         die_error('404 Not Found', "Missing one of the blob diff parameters");
4686                 }
4687
4688                 if (@difftree > 1) {
4689                         die_error('404 Not Found', "Ambiguous blob diff specification");
4690                 }
4691
4692                 %diffinfo = parse_difftree_raw_line($difftree[0]);
4693                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
4694                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
4695
4696                 $hash_parent ||= $diffinfo{'from_id'};
4697                 $hash        ||= $diffinfo{'to_id'};
4698
4699                 # non-textual hash id's can be cached
4700                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
4701                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
4702                         $expires = '+1d';
4703                 }
4704
4705                 # open patch output
4706                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4707                         '-p', ($format eq 'html' ? "--full-index" : ()),
4708                         $hash_parent_base, $hash_base,
4709                         "--", (defined $file_parent ? $file_parent : ()), $file_name
4710                         or die_error(undef, "Open git-diff-tree failed");
4711         }
4712
4713         # old/legacy style URI
4714         if (!%diffinfo && # if new style URI failed
4715             defined $hash && defined $hash_parent) {
4716                 # fake git-diff-tree raw output
4717                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
4718                 $diffinfo{'from_id'} = $hash_parent;
4719                 $diffinfo{'to_id'}   = $hash;
4720                 if (defined $file_name) {
4721                         if (defined $file_parent) {
4722                                 $diffinfo{'status'} = '2';
4723                                 $diffinfo{'from_file'} = $file_parent;
4724                                 $diffinfo{'to_file'}   = $file_name;
4725                         } else { # assume not renamed
4726                                 $diffinfo{'status'} = '1';
4727                                 $diffinfo{'from_file'} = $file_name;
4728                                 $diffinfo{'to_file'}   = $file_name;
4729                         }
4730                 } else { # no filename given
4731                         $diffinfo{'status'} = '2';
4732                         $diffinfo{'from_file'} = $hash_parent;
4733                         $diffinfo{'to_file'}   = $hash;
4734                 }
4735
4736                 # non-textual hash id's can be cached
4737                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
4738                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4739                         $expires = '+1d';
4740                 }
4741
4742                 # open patch output
4743                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4744                         '-p', ($format eq 'html' ? "--full-index" : ()),
4745                         $hash_parent, $hash, "--"
4746                         or die_error(undef, "Open git-diff failed");
4747         } else  {
4748                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4749                         unless %diffinfo;
4750         }
4751
4752         # header
4753         if ($format eq 'html') {
4754                 my $formats_nav =
4755                         $cgi->a({-href => href(action=>"blobdiff_plain",
4756                                                hash=>$hash, hash_parent=>$hash_parent,
4757                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4758                                                file_name=>$file_name, file_parent=>$file_parent)},
4759                                 "raw");
4760                 git_header_html(undef, $expires);
4761                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4762                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4763                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4764                 } else {
4765                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4766                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4767                 }
4768                 if (defined $file_name) {
4769                         git_print_page_path($file_name, "blob", $hash_base);
4770                 } else {
4771                         print "<div class=\"page_path\"></div>\n";
4772                 }
4773
4774         } elsif ($format eq 'plain') {
4775                 print $cgi->header(
4776                         -type => 'text/plain',
4777                         -charset => 'utf-8',
4778                         -expires => $expires,
4779                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4780
4781                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4782
4783         } else {
4784                 die_error(undef, "Unknown blobdiff format");
4785         }
4786
4787         # patch
4788         if ($format eq 'html') {
4789                 print "<div class=\"page_body\">\n";
4790
4791                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4792                 close $fd;
4793
4794                 print "</div>\n"; # class="page_body"
4795                 git_footer_html();
4796
4797         } else {
4798                 while (my $line = <$fd>) {
4799                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4800                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4801
4802                         print $line;
4803
4804                         last if $line =~ m!^\+\+\+!;
4805                 }
4806                 local $/ = undef;
4807                 print <$fd>;
4808                 close $fd;
4809         }
4810 }
4811
4812 sub git_blobdiff_plain {
4813         git_blobdiff('plain');
4814 }
4815
4816 sub git_commitdiff {
4817         my $format = shift || 'html';
4818         $hash ||= $hash_base || "HEAD";
4819         my %co = parse_commit($hash);
4820         if (!%co) {
4821                 die_error(undef, "Unknown commit object");
4822         }
4823
4824         # choose format for commitdiff for merge
4825         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
4826                 $hash_parent = '--cc';
4827         }
4828         # we need to prepare $formats_nav before almost any parameter munging
4829         my $formats_nav;
4830         if ($format eq 'html') {
4831                 $formats_nav =
4832                         $cgi->a({-href => href(action=>"commitdiff_plain",
4833                                                hash=>$hash, hash_parent=>$hash_parent)},
4834                                 "raw");
4835
4836                 if (defined $hash_parent &&
4837                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
4838                         # commitdiff with two commits given
4839                         my $hash_parent_short = $hash_parent;
4840                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4841                                 $hash_parent_short = substr($hash_parent, 0, 7);
4842                         }
4843                         $formats_nav .=
4844                                 ' (from';
4845                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
4846                                 if ($co{'parents'}[$i] eq $hash_parent) {
4847                                         $formats_nav .= ' parent ' . ($i+1);
4848                                         last;
4849                                 }
4850                         }
4851                         $formats_nav .= ': ' .
4852                                 $cgi->a({-href => href(action=>"commitdiff",
4853                                                        hash=>$hash_parent)},
4854                                         esc_html($hash_parent_short)) .
4855                                 ')';
4856                 } elsif (!$co{'parent'}) {
4857                         # --root commitdiff
4858                         $formats_nav .= ' (initial)';
4859                 } elsif (scalar @{$co{'parents'}} == 1) {
4860                         # single parent commit
4861                         $formats_nav .=
4862                                 ' (parent: ' .
4863                                 $cgi->a({-href => href(action=>"commitdiff",
4864                                                        hash=>$co{'parent'})},
4865                                         esc_html(substr($co{'parent'}, 0, 7))) .
4866                                 ')';
4867                 } else {
4868                         # merge commit
4869                         if ($hash_parent eq '--cc') {
4870                                 $formats_nav .= ' | ' .
4871                                         $cgi->a({-href => href(action=>"commitdiff",
4872                                                                hash=>$hash, hash_parent=>'-c')},
4873                                                 'combined');
4874                         } else { # $hash_parent eq '-c'
4875                                 $formats_nav .= ' | ' .
4876                                         $cgi->a({-href => href(action=>"commitdiff",
4877                                                                hash=>$hash, hash_parent=>'--cc')},
4878                                                 'compact');
4879                         }
4880                         $formats_nav .=
4881                                 ' (merge: ' .
4882                                 join(' ', map {
4883                                         $cgi->a({-href => href(action=>"commitdiff",
4884                                                                hash=>$_)},
4885                                                 esc_html(substr($_, 0, 7)));
4886                                 } @{$co{'parents'}} ) .
4887                                 ')';
4888                 }
4889         }
4890
4891         my $hash_parent_param = $hash_parent;
4892         if (!defined $hash_parent_param) {
4893                 # --cc for multiple parents, --root for parentless
4894                 $hash_parent_param =
4895                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
4896         }
4897
4898         # read commitdiff
4899         my $fd;
4900         my @difftree;
4901         if ($format eq 'html') {
4902                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4903                         "--no-commit-id", "--patch-with-raw", "--full-index",
4904                         $hash_parent_param, $hash, "--"
4905                         or die_error(undef, "Open git-diff-tree failed");
4906
4907                 while (my $line = <$fd>) {
4908                         chomp $line;
4909                         # empty line ends raw part of diff-tree output
4910                         last unless $line;
4911                         push @difftree, scalar parse_difftree_raw_line($line);
4912                 }
4913
4914         } elsif ($format eq 'plain') {
4915                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4916                         '-p', $hash_parent_param, $hash, "--"
4917                         or die_error(undef, "Open git-diff-tree failed");
4918
4919         } else {
4920                 die_error(undef, "Unknown commitdiff format");
4921         }
4922
4923         # non-textual hash id's can be cached
4924         my $expires;
4925         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4926                 $expires = "+1d";
4927         }
4928
4929         # write commit message
4930         if ($format eq 'html') {
4931                 my $refs = git_get_references();
4932                 my $ref = format_ref_marker($refs, $co{'id'});
4933
4934                 git_header_html(undef, $expires);
4935                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4936                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4937                 git_print_authorship(\%co);
4938                 print "<div class=\"page_body\">\n";
4939                 if (@{$co{'comment'}} > 1) {
4940                         print "<div class=\"log\">\n";
4941                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4942                         print "</div>\n"; # class="log"
4943                 }
4944
4945         } elsif ($format eq 'plain') {
4946                 my $refs = git_get_references("tags");
4947                 my $tagname = git_get_rev_name_tags($hash);
4948                 my $filename = basename($project) . "-$hash.patch";
4949
4950                 print $cgi->header(
4951                         -type => 'text/plain',
4952                         -charset => 'utf-8',
4953                         -expires => $expires,
4954                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4955                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4956                 print <<TEXT;
4957 From: $co{'author'}
4958 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4959 Subject: $co{'title'}
4960 TEXT
4961                 print "X-Git-Tag: $tagname\n" if $tagname;
4962                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4963
4964                 foreach my $line (@{$co{'comment'}}) {
4965                         print "$line\n";
4966                 }
4967                 print "---\n\n";
4968         }
4969
4970         # write patch
4971         if ($format eq 'html') {
4972                 my $use_parents = !defined $hash_parent ||
4973                         $hash_parent eq '-c' || $hash_parent eq '--cc';
4974                 git_difftree_body(\@difftree, $hash,
4975                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4976                 print "<br/>\n";
4977
4978                 git_patchset_body($fd, \@difftree, $hash,
4979                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
4980                 close $fd;
4981                 print "</div>\n"; # class="page_body"
4982                 git_footer_html();
4983
4984         } elsif ($format eq 'plain') {
4985                 local $/ = undef;
4986                 print <$fd>;
4987                 close $fd
4988                         or print "Reading git-diff-tree failed\n";
4989         }
4990 }
4991
4992 sub git_commitdiff_plain {
4993         git_commitdiff('plain');
4994 }
4995
4996 sub git_history {
4997         if (!defined $hash_base) {
4998                 $hash_base = git_get_head_hash($project);
4999         }
5000         if (!defined $page) {
5001                 $page = 0;
5002         }
5003         my $ftype;
5004         my %co = parse_commit($hash_base);
5005         if (!%co) {
5006                 die_error(undef, "Unknown commit object");
5007         }
5008
5009         my $refs = git_get_references();
5010         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5011
5012         if (!defined $hash && defined $file_name) {
5013                 $hash = git_get_hash_by_path($hash_base, $file_name);
5014         }
5015         if (defined $hash) {
5016                 $ftype = git_get_type($hash);
5017         }
5018
5019         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
5020
5021         my $paging_nav = '';
5022         if ($page > 0) {
5023                 $paging_nav .=
5024                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5025                                                file_name=>$file_name)},
5026                                 "first");
5027                 $paging_nav .= " &sdot; " .
5028                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5029                                                file_name=>$file_name, page=>$page-1),
5030                                  -accesskey => "p", -title => "Alt-p"}, "prev");
5031         } else {
5032                 $paging_nav .= "first";
5033                 $paging_nav .= " &sdot; prev";
5034         }
5035         if ($#commitlist >= 100) {
5036                 $paging_nav .= " &sdot; " .
5037                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5038                                                file_name=>$file_name, page=>$page+1),
5039                                  -accesskey => "n", -title => "Alt-n"}, "next");
5040         } else {
5041                 $paging_nav .= " &sdot; next";
5042         }
5043         my $next_link = '';
5044         if ($#commitlist >= 100) {
5045                 $next_link =
5046                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5047                                                file_name=>$file_name, page=>$page+1),
5048                                  -accesskey => "n", -title => "Alt-n"}, "next");
5049         }
5050
5051         git_header_html();
5052         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5053         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5054         git_print_page_path($file_name, $ftype, $hash_base);
5055
5056         git_history_body(\@commitlist, 0, 99,
5057                          $refs, $hash_base, $ftype, $next_link);
5058
5059         git_footer_html();
5060 }
5061
5062 sub git_search {
5063         my ($have_search) = gitweb_check_feature('search');
5064         if (!$have_search) {
5065                 die_error('403 Permission denied', "Permission denied");
5066         }
5067         if (!defined $searchtext) {
5068                 die_error(undef, "Text field empty");
5069         }
5070         if (!defined $hash) {
5071                 $hash = git_get_head_hash($project);
5072         }
5073         my %co = parse_commit($hash);
5074         if (!%co) {
5075                 die_error(undef, "Unknown commit object");
5076         }
5077         if (!defined $page) {
5078                 $page = 0;
5079         }
5080
5081         $searchtype ||= 'commit';
5082         if ($searchtype eq 'pickaxe') {
5083                 # pickaxe may take all resources of your box and run for several minutes
5084                 # with every query - so decide by yourself how public you make this feature
5085                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5086                 if (!$have_pickaxe) {
5087                         die_error('403 Permission denied', "Permission denied");
5088                 }
5089         }
5090         if ($searchtype eq 'grep') {
5091                 my ($have_grep) = gitweb_check_feature('grep');
5092                 if (!$have_grep) {
5093                         die_error('403 Permission denied', "Permission denied");
5094                 }
5095         }
5096
5097         git_header_html();
5098
5099         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5100                 my $greptype;
5101                 if ($searchtype eq 'commit') {
5102                         $greptype = "--grep=";
5103                 } elsif ($searchtype eq 'author') {
5104                         $greptype = "--author=";
5105                 } elsif ($searchtype eq 'committer') {
5106                         $greptype = "--committer=";
5107                 }
5108                 $greptype .= $search_regexp;
5109                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
5110
5111                 my $paging_nav = '';
5112                 if ($page > 0) {
5113                         $paging_nav .=
5114                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5115                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
5116                                         "first");
5117                         $paging_nav .= " &sdot; " .
5118                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5119                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5120                                                        page=>$page-1),
5121                                          -accesskey => "p", -title => "Alt-p"}, "prev");
5122                 } else {
5123                         $paging_nav .= "first";
5124                         $paging_nav .= " &sdot; prev";
5125                 }
5126                 if ($#commitlist >= 100) {
5127                         $paging_nav .= " &sdot; " .
5128                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5129                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5130                                                        page=>$page+1),
5131                                          -accesskey => "n", -title => "Alt-n"}, "next");
5132                 } else {
5133                         $paging_nav .= " &sdot; next";
5134                 }
5135                 my $next_link = '';
5136                 if ($#commitlist >= 100) {
5137                         $next_link =
5138                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5139                                                        searchtext=>$searchtext, searchtype=>$searchtype,
5140                                                        page=>$page+1),
5141                                          -accesskey => "n", -title => "Alt-n"}, "next");
5142                 }
5143
5144                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5145                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5146                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5147         }
5148
5149         if ($searchtype eq 'pickaxe') {
5150                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5151                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5152
5153                 print "<table cellspacing=\"0\">\n";
5154                 my $alternate = 1;
5155                 $/ = "\n";
5156                 my $git_command = git_cmd_str();
5157                 my $searchqtext = $searchtext;
5158                 $searchqtext =~ s/'/'\\''/;
5159                 open my $fd, "-|", "$git_command rev-list $hash | " .
5160                         "$git_command diff-tree -r --stdin -S\'$searchqtext\'";
5161                 undef %co;
5162                 my @files;
5163                 while (my $line = <$fd>) {
5164                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
5165                                 my %set;
5166                                 $set{'file'} = $6;
5167                                 $set{'from_id'} = $3;
5168                                 $set{'to_id'} = $4;
5169                                 $set{'id'} = $set{'to_id'};
5170                                 if ($set{'id'} =~ m/0{40}/) {
5171                                         $set{'id'} = $set{'from_id'};
5172                                 }
5173                                 if ($set{'id'} =~ m/0{40}/) {
5174                                         next;
5175                                 }
5176                                 push @files, \%set;
5177                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
5178                                 if (%co) {
5179                                         if ($alternate) {
5180                                                 print "<tr class=\"dark\">\n";
5181                                         } else {
5182                                                 print "<tr class=\"light\">\n";
5183                                         }
5184                                         $alternate ^= 1;
5185                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5186                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
5187                                               "<td>" .
5188                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5189                                                       -class => "list subject"},
5190                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
5191                                         while (my $setref = shift @files) {
5192                                                 my %set = %$setref;
5193                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5194                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
5195                                                               -class => "list"},
5196                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5197                                                       "<br/>\n";
5198                                         }
5199                                         print "</td>\n" .
5200                                               "<td class=\"link\">" .
5201                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5202                                               " | " .
5203                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5204                                         print "</td>\n" .
5205                                               "</tr>\n";
5206                                 }
5207                                 %co = parse_commit($1);
5208                         }
5209                 }
5210                 close $fd;
5211
5212                 print "</table>\n";
5213         }
5214
5215         if ($searchtype eq 'grep') {
5216                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5217                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5218
5219                 print "<table cellspacing=\"0\">\n";
5220                 my $alternate = 1;
5221                 my $matches = 0;
5222                 $/ = "\n";
5223                 open my $fd, "-|", git_cmd(), 'grep', '-n', '-i', '-E', $searchtext, $co{'tree'};
5224                 my $lastfile = '';
5225                 while (my $line = <$fd>) {
5226                         chomp $line;
5227                         my ($file, $lno, $ltext, $binary);
5228                         last if ($matches++ > 1000);
5229                         if ($line =~ /^Binary file (.+) matches$/) {
5230                                 $file = $1;
5231                                 $binary = 1;
5232                         } else {
5233                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5234                         }
5235                         if ($file ne $lastfile) {
5236                                 $lastfile and print "</td></tr>\n";
5237                                 if ($alternate++) {
5238                                         print "<tr class=\"dark\">\n";
5239                                 } else {
5240                                         print "<tr class=\"light\">\n";
5241                                 }
5242                                 print "<td class=\"list\">".
5243                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5244                                                                file_name=>"$file"),
5245                                                 -class => "list"}, esc_path($file));
5246                                 print "</td><td>\n";
5247                                 $lastfile = $file;
5248                         }
5249                         if ($binary) {
5250                                 print "<div class=\"binary\">Binary file</div>\n";
5251                         } else {
5252                                 $ltext = untabify($ltext);
5253                                 if ($ltext =~ m/^(.*)($searchtext)(.*)$/i) {
5254                                         $ltext = esc_html($1, -nbsp=>1);
5255                                         $ltext .= '<span class="match">';
5256                                         $ltext .= esc_html($2, -nbsp=>1);
5257                                         $ltext .= '</span>';
5258                                         $ltext .= esc_html($3, -nbsp=>1);
5259                                 } else {
5260                                         $ltext = esc_html($ltext, -nbsp=>1);
5261                                 }
5262                                 print "<div class=\"pre\">" .
5263                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5264                                                                file_name=>"$file").'#l'.$lno,
5265                                                 -class => "linenr"}, sprintf('%4i', $lno))
5266                                         . ' ' .  $ltext . "</div>\n";
5267                         }
5268                 }
5269                 if ($lastfile) {
5270                         print "</td></tr>\n";
5271                         if ($matches > 1000) {
5272                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5273                         }
5274                 } else {
5275                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5276                 }
5277                 close $fd;
5278
5279                 print "</table>\n";
5280         }
5281         git_footer_html();
5282 }
5283
5284 sub git_search_help {
5285         git_header_html();
5286         git_print_page_nav('','', $hash,$hash,$hash);
5287         print <<EOT;
5288 <dl>
5289 <dt><b>commit</b></dt>
5290 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
5291 EOT
5292         my ($have_grep) = gitweb_check_feature('grep');
5293         if ($have_grep) {
5294                 print <<EOT;
5295 <dt><b>grep</b></dt>
5296 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5297     a different one) are searched for the given
5298 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a>
5299 (POSIX extended) and the matches are listed. On large
5300 trees, this search can take a while and put some strain on the server, so please use it with
5301 some consideration.</dd>
5302 EOT
5303         }
5304         print <<EOT;
5305 <dt><b>author</b></dt>
5306 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
5307 <dt><b>committer</b></dt>
5308 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
5309 EOT
5310         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5311         if ($have_pickaxe) {
5312                 print <<EOT;
5313 <dt><b>pickaxe</b></dt>
5314 <dd>All commits that caused the string to appear or disappear from any file (changes that
5315 added, removed or "modified" the string) will be listed. This search can take a while and
5316 takes a lot of strain on the server, so please use it wisely.</dd>
5317 EOT
5318         }
5319         print "</dl>\n";
5320         git_footer_html();
5321 }
5322
5323 sub git_shortlog {
5324         my $head = git_get_head_hash($project);
5325         if (!defined $hash) {
5326                 $hash = $head;
5327         }
5328         if (!defined $page) {
5329                 $page = 0;
5330         }
5331         my $refs = git_get_references();
5332
5333         my @commitlist = parse_commits($hash, 101, (100 * $page));
5334
5335         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
5336         my $next_link = '';
5337         if ($#commitlist >= 100) {
5338                 $next_link =
5339                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
5340                                  -accesskey => "n", -title => "Alt-n"}, "next");
5341         }
5342
5343         git_header_html();
5344         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5345         git_print_header_div('summary', $project);
5346
5347         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5348
5349         git_footer_html();
5350 }
5351
5352 ## ......................................................................
5353 ## feeds (RSS, Atom; OPML)
5354
5355 sub git_feed {
5356         my $format = shift || 'atom';
5357         my ($have_blame) = gitweb_check_feature('blame');
5358
5359         # Atom: http://www.atomenabled.org/developers/syndication/
5360         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5361         if ($format ne 'rss' && $format ne 'atom') {
5362                 die_error(undef, "Unknown web feed format");
5363         }
5364
5365         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5366         my $head = $hash || 'HEAD';
5367         my @commitlist = parse_commits($head, 150, 0, undef, $file_name);
5368
5369         my %latest_commit;
5370         my %latest_date;
5371         my $content_type = "application/$format+xml";
5372         if (defined $cgi->http('HTTP_ACCEPT') &&
5373                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5374                 # browser (feed reader) prefers text/xml
5375                 $content_type = 'text/xml';
5376         }
5377         if (defined($commitlist[0])) {
5378                 %latest_commit = %{$commitlist[0]};
5379                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5380                 print $cgi->header(
5381                         -type => $content_type,
5382                         -charset => 'utf-8',
5383                         -last_modified => $latest_date{'rfc2822'});
5384         } else {
5385                 print $cgi->header(
5386                         -type => $content_type,
5387                         -charset => 'utf-8');
5388         }
5389
5390         # Optimization: skip generating the body if client asks only
5391         # for Last-Modified date.
5392         return if ($cgi->request_method() eq 'HEAD');
5393
5394         # header variables
5395         my $title = "$site_name - $project/$action";
5396         my $feed_type = 'log';
5397         if (defined $hash) {
5398                 $title .= " - '$hash'";
5399                 $feed_type = 'branch log';
5400                 if (defined $file_name) {
5401                         $title .= " :: $file_name";
5402                         $feed_type = 'history';
5403                 }
5404         } elsif (defined $file_name) {
5405                 $title .= " - $file_name";
5406                 $feed_type = 'history';
5407         }
5408         $title .= " $feed_type";
5409         my $descr = git_get_project_description($project);
5410         if (defined $descr) {
5411                 $descr = esc_html($descr);
5412         } else {
5413                 $descr = "$project " .
5414                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5415                          " feed";
5416         }
5417         my $owner = git_get_project_owner($project);
5418         $owner = esc_html($owner);
5419
5420         #header
5421         my $alt_url;
5422         if (defined $file_name) {
5423                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5424         } elsif (defined $hash) {
5425                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5426         } else {
5427                 $alt_url = href(-full=>1, action=>"summary");
5428         }
5429         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5430         if ($format eq 'rss') {
5431                 print <<XML;
5432 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5433 <channel>
5434 XML
5435                 print "<title>$title</title>\n" .
5436                       "<link>$alt_url</link>\n" .
5437                       "<description>$descr</description>\n" .
5438                       "<language>en</language>\n";
5439         } elsif ($format eq 'atom') {
5440                 print <<XML;
5441 <feed xmlns="http://www.w3.org/2005/Atom">
5442 XML
5443                 print "<title>$title</title>\n" .
5444                       "<subtitle>$descr</subtitle>\n" .
5445                       '<link rel="alternate" type="text/html" href="' .
5446                       $alt_url . '" />' . "\n" .
5447                       '<link rel="self" type="' . $content_type . '" href="' .
5448                       $cgi->self_url() . '" />' . "\n" .
5449                       "<id>" . href(-full=>1) . "</id>\n" .
5450                       # use project owner for feed author
5451                       "<author><name>$owner</name></author>\n";
5452                 if (defined $favicon) {
5453                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5454                 }
5455                 if (defined $logo_url) {
5456                         # not twice as wide as tall: 72 x 27 pixels
5457                         print "<logo>" . esc_url($logo) . "</logo>\n";
5458                 }
5459                 if (! %latest_date) {
5460                         # dummy date to keep the feed valid until commits trickle in:
5461                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5462                 } else {
5463                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5464                 }
5465         }
5466
5467         # contents
5468         for (my $i = 0; $i <= $#commitlist; $i++) {
5469                 my %co = %{$commitlist[$i]};
5470                 my $commit = $co{'id'};
5471                 # we read 150, we always show 30 and the ones more recent than 48 hours
5472                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5473                         last;
5474                 }
5475                 my %cd = parse_date($co{'author_epoch'});
5476
5477                 # get list of changed files
5478                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5479                         $co{'parent'} || "--root",
5480                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5481                         or next;
5482                 my @difftree = map { chomp; $_ } <$fd>;
5483                 close $fd
5484                         or next;
5485
5486                 # print element (entry, item)
5487                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
5488                 if ($format eq 'rss') {
5489                         print "<item>\n" .
5490                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5491                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5492                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5493                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5494                               "<link>$co_url</link>\n" .
5495                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5496                               "<content:encoded>" .
5497                               "<![CDATA[\n";
5498                 } elsif ($format eq 'atom') {
5499                         print "<entry>\n" .
5500                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5501                               "<updated>$cd{'iso-8601'}</updated>\n" .
5502                               "<author>\n" .
5503                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5504                         if ($co{'author_email'}) {
5505                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5506                         }
5507                         print "</author>\n" .
5508                               # use committer for contributor
5509                               "<contributor>\n" .
5510                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5511                         if ($co{'committer_email'}) {
5512                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5513                         }
5514                         print "</contributor>\n" .
5515                               "<published>$cd{'iso-8601'}</published>\n" .
5516                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5517                               "<id>$co_url</id>\n" .
5518                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5519                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5520                 }
5521                 my $comment = $co{'comment'};
5522                 print "<pre>\n";
5523                 foreach my $line (@$comment) {
5524                         $line = esc_html($line);
5525                         print "$line\n";
5526                 }
5527                 print "</pre><ul>\n";
5528                 foreach my $difftree_line (@difftree) {
5529                         my %difftree = parse_difftree_raw_line($difftree_line);
5530                         next if !$difftree{'from_id'};
5531
5532                         my $file = $difftree{'file'} || $difftree{'to_file'};
5533
5534                         print "<li>" .
5535                               "[" .
5536                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
5537                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
5538                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
5539                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
5540                                       -title => "diff"}, 'D');
5541                         if ($have_blame) {
5542                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
5543                                                              file_name=>$file, hash_base=>$commit),
5544                                               -title => "blame"}, 'B');
5545                         }
5546                         # if this is not a feed of a file history
5547                         if (!defined $file_name || $file_name ne $file) {
5548                                 print $cgi->a({-href => href(-full=>1, action=>"history",
5549                                                              file_name=>$file, hash=>$commit),
5550                                               -title => "history"}, 'H');
5551                         }
5552                         $file = esc_path($file);
5553                         print "] ".
5554                               "$file</li>\n";
5555                 }
5556                 if ($format eq 'rss') {
5557                         print "</ul>]]>\n" .
5558                               "</content:encoded>\n" .
5559                               "</item>\n";
5560                 } elsif ($format eq 'atom') {
5561                         print "</ul>\n</div>\n" .
5562                               "</content>\n" .
5563                               "</entry>\n";
5564                 }
5565         }
5566
5567         # end of feed
5568         if ($format eq 'rss') {
5569                 print "</channel>\n</rss>\n";
5570         }       elsif ($format eq 'atom') {
5571                 print "</feed>\n";
5572         }
5573 }
5574
5575 sub git_rss {
5576         git_feed('rss');
5577 }
5578
5579 sub git_atom {
5580         git_feed('atom');
5581 }
5582
5583 sub git_opml {
5584         my @list = git_get_projects_list();
5585
5586         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
5587         print <<XML;
5588 <?xml version="1.0" encoding="utf-8"?>
5589 <opml version="1.0">
5590 <head>
5591   <title>$site_name OPML Export</title>
5592 </head>
5593 <body>
5594 <outline text="git RSS feeds">
5595 XML
5596
5597         foreach my $pr (@list) {
5598                 my %proj = %$pr;
5599                 my $head = git_get_head_hash($proj{'path'});
5600                 if (!defined $head) {
5601                         next;
5602                 }
5603                 $git_dir = "$projectroot/$proj{'path'}";
5604                 my %co = parse_commit($head);
5605                 if (!%co) {
5606                         next;
5607                 }
5608
5609                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
5610                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
5611                 my $html = "$my_url?p=$proj{'path'};a=summary";
5612                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
5613         }
5614         print <<XML;
5615 </outline>
5616 </body>
5617 </opml>
5618 XML
5619 }