gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # if we're called with PATH_INFO, we have to strip that
  31 # from the URL to find our real URL
  32 # we make $path_info global because it's also used later on
  33 my $path_info = $ENV{"PATH_INFO"};
  34 if ($path_info) {
  35         $my_url =~ s,\Q$path_info\E$,,;
  36         $my_uri =~ s,\Q$path_info\E$,,;
  37 }
  38
  39 # core git executable to use
  40 # this can just be "git" if your webserver has a sensible PATH
  41 our $GIT = "++GIT_BINDIR++/git";
  42
  43 # absolute fs-path which will be prepended to the project path
  44 #our $projectroot = "/pub/scm";
  45 our $projectroot = "++GITWEB_PROJECTROOT++";
  46
  47 # fs traversing limit for getting project list
  48 # the number is relative to the projectroot
  49 our $project_maxdepth = "++GITWEB_PROJECT_MAXDEPTH++";
  50
  51 # target of the home link on top of all pages
  52 our $home_link = $my_uri || "/";
  53
  54 # string of the home link on top of all pages
  55 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  56
  57 # name of your site or organization to appear in page titles
  58 # replace this with something more descriptive for clearer bookmarks
  59 our $site_name = "++GITWEB_SITENAME++"
  60                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  61
  62 # filename of html text to include at top of each page
  63 our $site_header = "++GITWEB_SITE_HEADER++";
  64 # html text to include at home page
  65 our $home_text = "++GITWEB_HOMETEXT++";
  66 # filename of html text to include at bottom of each page
  67 our $site_footer = "++GITWEB_SITE_FOOTER++";
  68
  69 # URI of stylesheets
  70 our @stylesheets = ("++GITWEB_CSS++");
  71 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  72 our $stylesheet = undef;
  73 # URI of GIT logo (72x27 size)
  74 our $logo = "++GITWEB_LOGO++";
  75 # URI of GIT favicon, assumed to be image/png type
  76 our $favicon = "++GITWEB_FAVICON++";
  77
  78 # URI and label (title) of GIT logo link
  79 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  80 #our $logo_label = "git documentation";
  81 our $logo_url = "http://git.or.cz/";
  82 our $logo_label = "git homepage";
  83
  84 # source of projects list
  85 our $projects_list = "++GITWEB_LIST++";
  86
  87 # the width (in characters) of the projects list "Description" column
  88 our $projects_list_description_width = 25;
  89
  90 # default order of projects list
  91 # valid values are none, project, descr, owner, and age
  92 our $default_projects_order = "project";
  93
  94 # show repository only if this file exists
  95 # (only effective if this variable evaluates to true)
  96 our $export_ok = "++GITWEB_EXPORT_OK++";
  97
  98 # only allow viewing of repositories also shown on the overview page
  99 our $strict_export = "++GITWEB_STRICT_EXPORT++";
 100
 101 # list of git base URLs used for URL to where fetch project from,
 102 # i.e. full URL is "$git_base_url/$project"
 103 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
 104
 105 # default blob_plain mimetype and default charset for text/plain blob
 106 our $default_blob_plain_mimetype = 'text/plain';
 107 our $default_text_plain_charset  = undef;
 108
 109 # file to use for guessing MIME types before trying /etc/mime.types
 110 # (relative to the current git repository)
 111 our $mimetypes_file = undef;
 112
 113 # assume this charset if line contains non-UTF-8 characters;
 114 # it should be valid encoding (see Encoding::Supported(3pm) for list),
 115 # for which encoding all byte sequences are valid, for example
 116 # 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
 117 # could be even 'utf-8' for the old behavior)
 118 our $fallback_encoding = 'latin1';
 119
 120 # rename detection options for git-diff and git-diff-tree
 121 # - default is '-M', with the cost proportional to
 122 #   (number of removed files) * (number of new files).
 123 # - more costly is '-C' (which implies '-M'), with the cost proportional to
 124 #   (number of changed files + number of removed files) * (number of new files)
 125 # - even more costly is '-C', '--find-copies-harder' with cost
 126 #   (number of files in the original tree) * (number of new files)
 127 # - one might want to include '-B' option, e.g. '-B', '-M'
 128 our @diff_opts = ('-M'); # taken from git_commit
 129
 130 # information about snapshot formats that gitweb is capable of serving
 131 our %known_snapshot_formats = (
 132         # name => {
 133         #       'display' => display name,
 134         #       'type' => mime type,
 135         #       'suffix' => filename suffix,
 136         #       'format' => --format for git-archive,
 137         #       'compressor' => [compressor command and arguments]
 138         #                       (array reference, optional)}
 139         #
 140         'tgz' => {
 141                 'display' => 'tar.gz',
 142                 'type' => 'application/x-gzip',
 143                 'suffix' => '.tar.gz',
 144                 'format' => 'tar',
 145                 'compressor' => ['gzip']},
 146
 147         'tbz2' => {
 148                 'display' => 'tar.bz2',
 149                 'type' => 'application/x-bzip2',
 150                 'suffix' => '.tar.bz2',
 151                 'format' => 'tar',
 152                 'compressor' => ['bzip2']},
 153
 154         'zip' => {
 155                 'display' => 'zip',
 156                 'type' => 'application/x-zip',
 157                 'suffix' => '.zip',
 158                 'format' => 'zip'},
 159 );
 160
 161 # Aliases so we understand old gitweb.snapshot values in repository
 162 # configuration.
 163 our %known_snapshot_format_aliases = (
 164         'gzip'  => 'tgz',
 165         'bzip2' => 'tbz2',
 166
 167         # backward compatibility: legacy gitweb config support
 168         'x-gzip' => undef, 'gz' => undef,
 169         'x-bzip2' => undef, 'bz2' => undef,
 170         'x-zip' => undef, '' => undef,
 171 );
 172
 173 # You define site-wide feature defaults here; override them with
 174 # $GITWEB_CONFIG as necessary.
 175 our %feature = (
 176         # feature => {
 177         #       'sub' => feature-sub (subroutine),
 178         #       'override' => allow-override (boolean),
 179         #       'default' => [ default options...] (array reference)}
 180         #
 181         # if feature is overridable (it means that allow-override has true value),
 182         # then feature-sub will be called with default options as parameters;
 183         # return value of feature-sub indicates if to enable specified feature
 184         #
 185         # if there is no 'sub' key (no feature-sub), then feature cannot be
 186         # overriden
 187         #
 188         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 189
 190         # Enable the 'blame' blob view, showing the last commit that modified
 191         # each line in the file. This can be very CPU-intensive.
 192
 193         # To enable system wide have in $GITWEB_CONFIG
 194         # $feature{'blame'}{'default'} = [1];
 195         # To have project specific config enable override in $GITWEB_CONFIG
 196         # $feature{'blame'}{'override'} = 1;
 197         # and in project config gitweb.blame = 0|1;
 198         'blame' => {
 199                 'sub' => \&feature_blame,
 200                 'override' => 0,
 201                 'default' => [0]},
 202
 203         # Enable the 'snapshot' link, providing a compressed archive of any
 204         # tree. This can potentially generate high traffic if you have large
 205         # project.
 206
 207         # Value is a list of formats defined in %known_snapshot_formats that
 208         # you wish to offer.
 209         # To disable system wide have in $GITWEB_CONFIG
 210         # $feature{'snapshot'}{'default'} = [];
 211         # To have project specific config enable override in $GITWEB_CONFIG
 212         # $feature{'snapshot'}{'override'} = 1;
 213         # and in project config, a comma-separated list of formats or "none"
 214         # to disable.  Example: gitweb.snapshot = tbz2,zip;
 215         'snapshot' => {
 216                 'sub' => \&feature_snapshot,
 217                 'override' => 0,
 218                 'default' => ['tgz']},
 219
 220         # Enable text search, which will list the commits which match author,
 221         # committer or commit text to a given string.  Enabled by default.
 222         # Project specific override is not supported.
 223         'search' => {
 224                 'override' => 0,
 225                 'default' => [1]},
 226
 227         # Enable grep search, which will list the files in currently selected
 228         # tree containing the given string. Enabled by default. This can be
 229         # potentially CPU-intensive, of course.
 230
 231         # To enable system wide have in $GITWEB_CONFIG
 232         # $feature{'grep'}{'default'} = [1];
 233         # To have project specific config enable override in $GITWEB_CONFIG
 234         # $feature{'grep'}{'override'} = 1;
 235         # and in project config gitweb.grep = 0|1;
 236         'grep' => {
 237                 'override' => 0,
 238                 'default' => [1]},
 239
 240         # Enable the pickaxe search, which will list the commits that modified
 241         # a given string in a file. This can be practical and quite faster
 242         # alternative to 'blame', but still potentially CPU-intensive.
 243
 244         # To enable system wide have in $GITWEB_CONFIG
 245         # $feature{'pickaxe'}{'default'} = [1];
 246         # To have project specific config enable override in $GITWEB_CONFIG
 247         # $feature{'pickaxe'}{'override'} = 1;
 248         # and in project config gitweb.pickaxe = 0|1;
 249         'pickaxe' => {
 250                 'sub' => \&feature_pickaxe,
 251                 'override' => 0,
 252                 'default' => [1]},
 253
 254         # Make gitweb use an alternative format of the URLs which can be
 255         # more readable and natural-looking: project name is embedded
 256         # directly in the path and the query string contains other
 257         # auxiliary information. All gitweb installations recognize
 258         # URL in either format; this configures in which formats gitweb
 259         # generates links.
 260
 261         # To enable system wide have in $GITWEB_CONFIG
 262         # $feature{'pathinfo'}{'default'} = [1];
 263         # Project specific override is not supported.
 264
 265         # Note that you will need to change the default location of CSS,
 266         # favicon, logo and possibly other files to an absolute URL. Also,
 267         # if gitweb.cgi serves as your indexfile, you will need to force
 268         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 269         'pathinfo' => {
 270                 'override' => 0,
 271                 'default' => [0]},
 272
 273         # Make gitweb consider projects in project root subdirectories
 274         # to be forks of existing projects. Given project $projname.git,
 275         # projects matching $projname/*.git will not be shown in the main
 276         # projects list, instead a '+' mark will be added to $projname
 277         # there and a 'forks' view will be enabled for the project, listing
 278         # all the forks. If project list is taken from a file, forks have
 279         # to be listed after the main project.
 280
 281         # To enable system wide have in $GITWEB_CONFIG
 282         # $feature{'forks'}{'default'} = [1];
 283         # Project specific override is not supported.
 284         'forks' => {
 285                 'override' => 0,
 286                 'default' => [0]},
 287
 288         # Insert custom links to the action bar of all project pages.
 289         # This enables you mainly to link to third-party scripts integrating
 290         # into gitweb; e.g. git-browser for graphical history representation
 291         # or custom web-based repository administration interface.
 292
 293         # The 'default' value consists of a list of triplets in the form
 294         # (label, link, position) where position is the label after which
 295         # to inster the link and link is a format string where %n expands
 296         # to the project name, %f to the project path within the filesystem,
 297         # %h to the current hash (h gitweb parameter) and %b to the current
 298         # hash base (hb gitweb parameter).
 299
 300         # To enable system wide have in $GITWEB_CONFIG e.g.
 301         # $feature{'actions'}{'default'} = [('graphiclog',
 302         #       '/git-browser/by-commit.html?r=%n', 'summary')];
 303         # Project specific override is not supported.
 304         'actions' => {
 305                 'override' => 0,
 306                 'default' => []},
 307
 308         # Allow gitweb scan project content tags described in ctags/
 309         # of project repository, and display the popular Web 2.0-ish
 310         # "tag cloud" near the project list. Note that this is something
 311         # COMPLETELY different from the normal Git tags.
 312
 313         # gitweb by itself can show existing tags, but it does not handle
 314         # tagging itself; you need an external application for that.
 315         # For an example script, check Girocco's cgi/tagproj.cgi.
 316         # You may want to install the HTML::TagCloud Perl module to get
 317         # a pretty tag cloud instead of just a list of tags.
 318
 319         # To enable system wide have in $GITWEB_CONFIG
 320         # $feature{'ctags'}{'default'} = ['path_to_tag_script'];
 321         # Project specific override is not supported.
 322         'ctags' => {
 323                 'override' => 0,
 324                 'default' => [0]},
 325 );
 326
 327 sub gitweb_check_feature {
 328         my ($name) = @_;
 329         return unless exists $feature{$name};
 330         my ($sub, $override, @defaults) = (
 331                 $feature{$name}{'sub'},
 332                 $feature{$name}{'override'},
 333                 @{$feature{$name}{'default'}});
 334         if (!$override) { return @defaults; }
 335         if (!defined $sub) {
 336                 warn "feature $name is not overrideable";
 337                 return @defaults;
 338         }
 339         return $sub->(@defaults);
 340 }
 341
 342 sub feature_blame {
 343         my ($val) = git_get_project_config('blame', '--bool');
 344
 345         if ($val eq 'true') {
 346                 return 1;
 347         } elsif ($val eq 'false') {
 348                 return 0;
 349         }
 350
 351         return $_[0];
 352 }
 353
 354 sub feature_snapshot {
 355         my (@fmts) = @_;
 356
 357         my ($val) = git_get_project_config('snapshot');
 358
 359         if ($val) {
 360                 @fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
 361         }
 362
 363         return @fmts;
 364 }
 365
 366 sub feature_grep {
 367         my ($val) = git_get_project_config('grep', '--bool');
 368
 369         if ($val eq 'true') {
 370                 return (1);
 371         } elsif ($val eq 'false') {
 372                 return (0);
 373         }
 374
 375         return ($_[0]);
 376 }
 377
 378 sub feature_pickaxe {
 379         my ($val) = git_get_project_config('pickaxe', '--bool');
 380
 381         if ($val eq 'true') {
 382                 return (1);
 383         } elsif ($val eq 'false') {
 384                 return (0);
 385         }
 386
 387         return ($_[0]);
 388 }
 389
 390 # checking HEAD file with -e is fragile if the repository was
 391 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 392 # and then pruned.
 393 sub check_head_link {
 394         my ($dir) = @_;
 395         my $headfile = "$dir/HEAD";
 396         return ((-e $headfile) ||
 397                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 398 }
 399
 400 sub check_export_ok {
 401         my ($dir) = @_;
 402         return (check_head_link($dir) &&
 403                 (!$export_ok || -e "$dir/$export_ok"));
 404 }
 405
 406 # process alternate names for backward compatibility
 407 # filter out unsupported (unknown) snapshot formats
 408 sub filter_snapshot_fmts {
 409         my @fmts = @_;
 410
 411         @fmts = map {
 412                 exists $known_snapshot_format_aliases{$_} ?
 413                        $known_snapshot_format_aliases{$_} : $_} @fmts;
 414         @fmts = grep(exists $known_snapshot_formats{$_}, @fmts);
 415
 416 }
 417
 418 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 419 if (-e $GITWEB_CONFIG) {
 420         do $GITWEB_CONFIG;
 421 } else {
 422         our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "++GITWEB_CONFIG_SYSTEM++";
 423         do $GITWEB_CONFIG_SYSTEM if -e $GITWEB_CONFIG_SYSTEM;
 424 }
 425
 426 # version of the core git binary
 427 our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 428
 429 $projects_list ||= $projectroot;
 430
 431 # ======================================================================
 432 # input validation and dispatch
 433
 434 # input parameters can be collected from a variety of sources (presently, CGI
 435 # and PATH_INFO), so we define an %input_params hash that collects them all
 436 # together during validation: this allows subsequent uses (e.g. href()) to be
 437 # agnostic of the parameter origin
 438
 439 my %input_params = ();
 440
 441 # input parameters are stored with the long parameter name as key. This will
 442 # also be used in the href subroutine to convert parameters to their CGI
 443 # equivalent, and since the href() usage is the most frequent one, we store
 444 # the name -> CGI key mapping here, instead of the reverse.
 445 #
 446 # XXX: Warning: If you touch this, check the search form for updating,
 447 # too.
 448
 449 my @cgi_param_mapping = (
 450         project => "p",
 451         action => "a",
 452         file_name => "f",
 453         file_parent => "fp",
 454         hash => "h",
 455         hash_parent => "hp",
 456         hash_base => "hb",
 457         hash_parent_base => "hpb",
 458         page => "pg",
 459         order => "o",
 460         searchtext => "s",
 461         searchtype => "st",
 462         snapshot_format => "sf",
 463         extra_options => "opt",
 464         search_use_regexp => "sr",
 465 );
 466 my %cgi_param_mapping = @cgi_param_mapping;
 467
 468 # we will also need to know the possible actions, for validation
 469 my %actions = (
 470         "blame" => \&git_blame,
 471         "blobdiff" => \&git_blobdiff,
 472         "blobdiff_plain" => \&git_blobdiff_plain,
 473         "blob" => \&git_blob,
 474         "blob_plain" => \&git_blob_plain,
 475         "commitdiff" => \&git_commitdiff,
 476         "commitdiff_plain" => \&git_commitdiff_plain,
 477         "commit" => \&git_commit,
 478         "forks" => \&git_forks,
 479         "heads" => \&git_heads,
 480         "history" => \&git_history,
 481         "log" => \&git_log,
 482         "rss" => \&git_rss,
 483         "atom" => \&git_atom,
 484         "search" => \&git_search,
 485         "search_help" => \&git_search_help,
 486         "shortlog" => \&git_shortlog,
 487         "summary" => \&git_summary,
 488         "tag" => \&git_tag,
 489         "tags" => \&git_tags,
 490         "tree" => \&git_tree,
 491         "snapshot" => \&git_snapshot,
 492         "object" => \&git_object,
 493         # those below don't need $project
 494         "opml" => \&git_opml,
 495         "project_list" => \&git_project_list,
 496         "project_index" => \&git_project_index,
 497 );
 498
 499 # finally, we have the hash of allowed extra_options for the commands that
 500 # allow them
 501 my %allowed_options = (
 502         "--no-merges" => [ qw(rss atom log shortlog history) ],
 503 );
 504
 505 # fill %input_params with the CGI parameters. All values except for 'opt'
 506 # should be single values, but opt can be an array. We should probably
 507 # build an array of parameters that can be multi-valued, but since for the time
 508 # being it's only this one, we just single it out
 509 while (my ($name, $symbol) = each %cgi_param_mapping) {
 510         if ($symbol eq 'opt') {
 511                 $input_params{$name} = [ $cgi->param($symbol) ];
 512         } else {
 513                 $input_params{$name} = $cgi->param($symbol);
 514         }
 515 }
 516
 517 # now read PATH_INFO and update the parameter list for missing parameters
 518 sub evaluate_path_info {
 519         return if defined $input_params{'project'};
 520         return if !$path_info;
 521         $path_info =~ s,^/+,,;
 522         return if !$path_info;
 523
 524         # find which part of PATH_INFO is project
 525         my $project = $path_info;
 526         $project =~ s,/+$,,;
 527         while ($project && !check_head_link("$projectroot/$project")) {
 528                 $project =~ s,/*[^/]*$,,;
 529         }
 530         return unless $project;
 531         $input_params{'project'} = $project;
 532
 533         # do not change any parameters if an action is given using the query string
 534         return if $input_params{'action'};
 535         $path_info =~ s,^\Q$project\E/*,,;
 536
 537         # next, check if we have an action
 538         my $action = $path_info;
 539         $action =~ s,/.*$,,;
 540         if (exists $actions{$action}) {
 541                 $path_info =~ s,^$action/*,,;
 542                 $input_params{'action'} = $action;
 543         }
 544
 545         # list of actions that want hash_base instead of hash, but can have no
 546         # pathname (f) parameter
 547         my @wants_base = (
 548                 'tree',
 549                 'history',
 550         );
 551
 552         # we want to catch
 553         # [$hash_parent_base[:$file_parent]..]$hash_parent[:$file_name]
 554         my ($parentrefname, $parentpathname, $refname, $pathname) =
 555                 ($path_info =~ /^(?:(.+?)(?::(.+))?\.\.)?(.+?)(?::(.+))?$/);
 556
 557         # first, analyze the 'current' part
 558         if (defined $pathname) {
 559                 # we got "branch:filename" or "branch:dir/"
 560                 # we could use git_get_type(branch:pathname), but:
 561                 # - it needs $git_dir
 562                 # - it does a git() call
 563                 # - the convention of terminating directories with a slash
 564                 #   makes it superfluous
 565                 # - embedding the action in the PATH_INFO would make it even
 566                 #   more superfluous
 567                 $pathname =~ s,^/+,,;
 568                 if (!$pathname || substr($pathname, -1) eq "/") {
 569                         $input_params{'action'} ||= "tree";
 570                         $pathname =~ s,/$,,;
 571                 } else {
 572                         # the default action depends on whether we had parent info
 573                         # or not
 574                         if ($parentrefname) {
 575                                 $input_params{'action'} ||= "blobdiff_plain";
 576                         } else {
 577                                 $input_params{'action'} ||= "blob_plain";
 578                         }
 579                 }
 580                 $input_params{'hash_base'} ||= $refname;
 581                 $input_params{'file_name'} ||= $pathname;
 582         } elsif (defined $refname) {
 583                 # we got "branch". In this case we have to choose if we have to
 584                 # set hash or hash_base.
 585                 #
 586                 # Most of the actions without a pathname only want hash to be
 587                 # set, except for the ones specified in @wants_base that want
 588                 # hash_base instead. It should also be noted that hand-crafted
 589                 # links having 'history' as an action and no pathname or hash
 590                 # set will fail, but that happens regardless of PATH_INFO.
 591                 $input_params{'action'} ||= "shortlog";
 592                 if (grep { $_ eq $input_params{'action'} } @wants_base) {
 593                         $input_params{'hash_base'} ||= $refname;
 594                 } else {
 595                         $input_params{'hash'} ||= $refname;
 596                 }
 597         }
 598
 599         # next, handle the 'parent' part, if present
 600         if (defined $parentrefname) {
 601                 # a missing pathspec defaults to the 'current' filename, allowing e.g.
 602                 # someproject/blobdiff/oldrev..newrev:/filename
 603                 if ($parentpathname) {
 604                         $parentpathname =~ s,^/+,,;
 605                         $parentpathname =~ s,/$,,;
 606                         $input_params{'file_parent'} ||= $parentpathname;
 607                 } else {
 608                         $input_params{'file_parent'} ||= $input_params{'file_name'};
 609                 }
 610                 # we assume that hash_parent_base is wanted if a path was specified,
 611                 # or if the action wants hash_base instead of hash
 612                 if (defined $input_params{'file_parent'} ||
 613                         grep { $_ eq $input_params{'action'} } @wants_base) {
 614                         $input_params{'hash_parent_base'} ||= $parentrefname;
 615                 } else {
 616                         $input_params{'hash_parent'} ||= $parentrefname;
 617                 }
 618         }
 619 }
 620 evaluate_path_info();
 621
 622 our $action = $input_params{'action'};
 623 if (defined $action) {
 624         if (!validate_action($action)) {
 625                 die_error(400, "Invalid action parameter");
 626         }
 627 }
 628
 629 # parameters which are pathnames
 630 our $project = $input_params{'project'};
 631 if (defined $project) {
 632         if (!validate_project($project)) {
 633                 undef $project;
 634                 die_error(404, "No such project");
 635         }
 636 }
 637
 638 our $file_name = $input_params{'file_name'};
 639 if (defined $file_name) {
 640         if (!validate_pathname($file_name)) {
 641                 die_error(400, "Invalid file parameter");
 642         }
 643 }
 644
 645 our $file_parent = $input_params{'file_parent'};
 646 if (defined $file_parent) {
 647         if (!validate_pathname($file_parent)) {
 648                 die_error(400, "Invalid file parent parameter");
 649         }
 650 }
 651
 652 # parameters which are refnames
 653 our $hash = $input_params{'hash'};
 654 if (defined $hash) {
 655         if (!validate_refname($hash)) {
 656                 die_error(400, "Invalid hash parameter");
 657         }
 658 }
 659
 660 our $hash_parent = $input_params{'hash_parent'};
 661 if (defined $hash_parent) {
 662         if (!validate_refname($hash_parent)) {
 663                 die_error(400, "Invalid hash parent parameter");
 664         }
 665 }
 666
 667 our $hash_base = $input_params{'hash_base'};
 668 if (defined $hash_base) {
 669         if (!validate_refname($hash_base)) {
 670                 die_error(400, "Invalid hash base parameter");
 671         }
 672 }
 673
 674 our @extra_options = @{$input_params{'extra_options'}};
 675 # @extra_options is always defined, since it can only be (currently) set from
 676 # CGI, and $cgi->param() returns the empty array in array context if the param
 677 # is not set
 678 foreach my $opt (@extra_options) {
 679         if (not exists $allowed_options{$opt}) {
 680                 die_error(400, "Invalid option parameter");
 681         }
 682         if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
 683                 die_error(400, "Invalid option parameter for this action");
 684         }
 685 }
 686
 687 our $hash_parent_base = $input_params{'hash_parent_base'};
 688 if (defined $hash_parent_base) {
 689         if (!validate_refname($hash_parent_base)) {
 690                 die_error(400, "Invalid hash parent base parameter");
 691         }
 692 }
 693
 694 # other parameters
 695 our $page = $input_params{'page'};
 696 if (defined $page) {
 697         if ($page =~ m/[^0-9]/) {
 698                 die_error(400, "Invalid page parameter");
 699         }
 700 }
 701
 702 our $searchtype = $input_params{'searchtype'};
 703 if (defined $searchtype) {
 704         if ($searchtype =~ m/[^a-z]/) {
 705                 die_error(400, "Invalid searchtype parameter");
 706         }
 707 }
 708
 709 our $search_use_regexp = $input_params{'search_use_regexp'};
 710
 711 our $searchtext = $input_params{'searchtext'};
 712 our $search_regexp;
 713 if (defined $searchtext) {
 714         if (length($searchtext) < 2) {
 715                 die_error(403, "At least two characters are required for search parameter");
 716         }
 717         $search_regexp = $search_use_regexp ? $searchtext : quotemeta $searchtext;
 718 }
 719
 720 # path to the current git repository
 721 our $git_dir;
 722 $git_dir = "$projectroot/$project" if $project;
 723
 724 # dispatch
 725 if (!defined $action) {
 726         if (defined $hash) {
 727                 $action = git_get_type($hash);
 728         } elsif (defined $hash_base && defined $file_name) {
 729                 $action = git_get_type("$hash_base:$file_name");
 730         } elsif (defined $project) {
 731                 $action = 'summary';
 732         } else {
 733                 $action = 'project_list';
 734         }
 735 }
 736 if (!defined($actions{$action})) {
 737         die_error(400, "Unknown action");
 738 }
 739 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 740     !$project) {
 741         die_error(400, "Project needed");
 742 }
 743 $actions{$action}->();
 744 exit;
 745
 746 ## ======================================================================
 747 ## action links
 748
 749 sub href (%) {
 750         my %params = @_;
 751         # default is to use -absolute url() i.e. $my_uri
 752         my $href = $params{-full} ? $my_url : $my_uri;
 753
 754         $params{'project'} = $project unless exists $params{'project'};
 755
 756         if ($params{-replay}) {
 757                 while (my ($name, $symbol) = each %cgi_param_mapping) {
 758                         if (!exists $params{$name}) {
 759                                 $params{$name} = $input_params{$name};
 760                         }
 761                 }
 762         }
 763
 764         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 765         if ($use_pathinfo) {
 766                 # try to put as many parameters as possible in PATH_INFO:
 767                 #   - project name
 768                 #   - action
 769                 #   - hash or hash_base:/filename
 770
 771                 # When the script is the root DirectoryIndex for the domain,
 772                 # $href here would be something like http://gitweb.example.com/
 773                 # Thus, we strip any trailing / from $href, to spare us double
 774                 # slashes in the final URL
 775                 $href =~ s,/$,,;
 776
 777                 # Then add the project name, if present
 778                 $href .= "/".esc_url($params{'project'}) if defined $params{'project'};
 779                 delete $params{'project'};
 780
 781                 # Summary just uses the project path URL, any other action is
 782                 # added to the URL
 783                 if (defined $params{'action'}) {
 784                         $href .= "/".esc_url($params{'action'}) unless $params{'action'} eq 'summary';
 785                         delete $params{'action'};
 786                 }
 787
 788                 # Finally, we put either hash_base:/file_name or hash
 789                 if (defined $params{'hash_base'}) {
 790                         $href .= "/".esc_url($params{'hash_base'});
 791                         if (defined $params{'file_name'}) {
 792                                 $href .= ":/".esc_url($params{'file_name'});
 793                                 delete $params{'file_name'};
 794                         }
 795                         delete $params{'hash'};
 796                         delete $params{'hash_base'};
 797                 } elsif (defined $params{'hash'}) {
 798                         $href .= "/".esc_url($params{'hash'});
 799                         delete $params{'hash'};
 800                 }
 801         }
 802
 803         # now encode the parameters explicitly
 804         my @result = ();
 805         for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
 806                 my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
 807                 if (defined $params{$name}) {
 808                         if (ref($params{$name}) eq "ARRAY") {
 809                                 foreach my $par (@{$params{$name}}) {
 810                                         push @result, $symbol . "=" . esc_param($par);
 811                                 }
 812                         } else {
 813                                 push @result, $symbol . "=" . esc_param($params{$name});
 814                         }
 815                 }
 816         }
 817         $href .= "?" . join(';', @result) if scalar @result;
 818
 819         return $href;
 820 }
 821
 822
 823 ## ======================================================================
 824 ## validation, quoting/unquoting and escaping
 825
 826 sub validate_action {
 827         my $input = shift || return undef;
 828         return undef unless exists $actions{$input};
 829         return $input;
 830 }
 831
 832 sub validate_project {
 833         my $input = shift || return undef;
 834         if (!validate_pathname($input) ||
 835                 !(-d "$projectroot/$input") ||
 836                 !check_head_link("$projectroot/$input") ||
 837                 ($export_ok && !(-e "$projectroot/$input/$export_ok")) ||
 838                 ($strict_export && !project_in_list($input))) {
 839                 return undef;
 840         } else {
 841                 return $input;
 842         }
 843 }
 844
 845 sub validate_pathname {
 846         my $input = shift || return undef;
 847
 848         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 849         # at the beginning, at the end, and between slashes.
 850         # also this catches doubled slashes
 851         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 852                 return undef;
 853         }
 854         # no null characters
 855         if ($input =~ m!\0!) {
 856                 return undef;
 857         }
 858         return $input;
 859 }
 860
 861 sub validate_refname {
 862         my $input = shift || return undef;
 863
 864         # textual hashes are O.K.
 865         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 866                 return $input;
 867         }
 868         # it must be correct pathname
 869         $input = validate_pathname($input)
 870                 or return undef;
 871         # restrictions on ref name according to git-check-ref-format
 872         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 873                 return undef;
 874         }
 875         return $input;
 876 }
 877
 878 # decode sequences of octets in utf8 into Perl's internal form,
 879 # which is utf-8 with utf8 flag set if needed.  gitweb writes out
 880 # in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
 881 sub to_utf8 {
 882         my $str = shift;
 883         if (utf8::valid($str)) {
 884                 utf8::decode($str);
 885                 return $str;
 886         } else {
 887                 return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
 888         }
 889 }
 890
 891 # quote unsafe chars, but keep the slash, even when it's not
 892 # correct, but quoted slashes look too horrible in bookmarks
 893 sub esc_param {
 894         my $str = shift;
 895         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 896         $str =~ s/\+/%2B/g;
 897         $str =~ s/ /\+/g;
 898         return $str;
 899 }
 900
 901 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 902 sub esc_url {
 903         my $str = shift;
 904         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 905         $str =~ s/\+/%2B/g;
 906         $str =~ s/ /\+/g;
 907         return $str;
 908 }
 909
 910 # replace invalid utf8 character with SUBSTITUTION sequence
 911 sub esc_html ($;%) {
 912         my $str = shift;
 913         my %opts = @_;
 914
 915         $str = to_utf8($str);
 916         $str = $cgi->escapeHTML($str);
 917         if ($opts{'-nbsp'}) {
 918                 $str =~ s/ /&nbsp;/g;
 919         }
 920         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 921         return $str;
 922 }
 923
 924 # quote control characters and escape filename to HTML
 925 sub esc_path {
 926         my $str = shift;
 927         my %opts = @_;
 928
 929         $str = to_utf8($str);
 930         $str = $cgi->escapeHTML($str);
 931         if ($opts{'-nbsp'}) {
 932                 $str =~ s/ /&nbsp;/g;
 933         }
 934         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 935         return $str;
 936 }
 937
 938 # Make control characters "printable", using character escape codes (CEC)
 939 sub quot_cec {
 940         my $cntrl = shift;
 941         my %opts = @_;
 942         my %es = ( # character escape codes, aka escape sequences
 943                 "\t" => '\t',   # tab            (HT)
 944                 "\n" => '\n',   # line feed      (LF)
 945                 "\r" => '\r',   # carrige return (CR)
 946                 "\f" => '\f',   # form feed      (FF)
 947                 "\b" => '\b',   # backspace      (BS)
 948                 "\a" => '\a',   # alarm (bell)   (BEL)
 949                 "\e" => '\e',   # escape         (ESC)
 950                 "\013" => '\v', # vertical tab   (VT)
 951                 "\000" => '\0', # nul character  (NUL)
 952         );
 953         my $chr = ( (exists $es{$cntrl})
 954                     ? $es{$cntrl}
 955                     : sprintf('\%2x', ord($cntrl)) );
 956         if ($opts{-nohtml}) {
 957                 return $chr;
 958         } else {
 959                 return "<span class=\"cntrl\">$chr</span>";
 960         }
 961 }
 962
 963 # Alternatively use unicode control pictures codepoints,
 964 # Unicode "printable representation" (PR)
 965 sub quot_upr {
 966         my $cntrl = shift;
 967         my %opts = @_;
 968
 969         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 970         if ($opts{-nohtml}) {
 971                 return $chr;
 972         } else {
 973                 return "<span class=\"cntrl\">$chr</span>";
 974         }
 975 }
 976
 977 # git may return quoted and escaped filenames
 978 sub unquote {
 979         my $str = shift;
 980
 981         sub unq {
 982                 my $seq = shift;
 983                 my %es = ( # character escape codes, aka escape sequences
 984                         't' => "\t",   # tab            (HT, TAB)
 985                         'n' => "\n",   # newline        (NL)
 986                         'r' => "\r",   # return         (CR)
 987                         'f' => "\f",   # form feed      (FF)
 988                         'b' => "\b",   # backspace      (BS)
 989                         'a' => "\a",   # alarm (bell)   (BEL)
 990                         'e' => "\e",   # escape         (ESC)
 991                         'v' => "\013", # vertical tab   (VT)
 992                 );
 993
 994                 if ($seq =~ m/^[0-7]{1,3}$/) {
 995                         # octal char sequence
 996                         return chr(oct($seq));
 997                 } elsif (exists $es{$seq}) {
 998                         # C escape sequence, aka character escape code
 999                         return $es{$seq};
1000                 }
1001                 # quoted ordinary character
1002                 return $seq;
1003         }
1004
1005         if ($str =~ m/^"(.*)"$/) {
1006                 # needs unquoting
1007                 $str = $1;
1008                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
1009         }
1010         return $str;
1011 }
1012
1013 # escape tabs (convert tabs to spaces)
1014 sub untabify {
1015         my $line = shift;
1016
1017         while ((my $pos = index($line, "\t")) != -1) {
1018                 if (my $count = (8 - ($pos % 8))) {
1019                         my $spaces = ' ' x $count;
1020                         $line =~ s/\t/$spaces/;
1021                 }
1022         }
1023
1024         return $line;
1025 }
1026
1027 sub project_in_list {
1028         my $project = shift;
1029         my @list = git_get_projects_list();
1030         return @list && scalar(grep { $_->{'path'} eq $project } @list);
1031 }
1032
1033 ## ----------------------------------------------------------------------
1034 ## HTML aware string manipulation
1035
1036 # Try to chop given string on a word boundary between position
1037 # $len and $len+$add_len. If there is no word boundary there,
1038 # chop at $len+$add_len. Do not chop if chopped part plus ellipsis
1039 # (marking chopped part) would be longer than given string.
1040 sub chop_str {
1041         my $str = shift;
1042         my $len = shift;
1043         my $add_len = shift || 10;
1044         my $where = shift || 'right'; # 'left' | 'center' | 'right'
1045
1046         # Make sure perl knows it is utf8 encoded so we don't
1047         # cut in the middle of a utf8 multibyte char.
1048         $str = to_utf8($str);
1049
1050         # allow only $len chars, but don't cut a word if it would fit in $add_len
1051         # if it doesn't fit, cut it if it's still longer than the dots we would add
1052         # remove chopped character entities entirely
1053
1054         # when chopping in the middle, distribute $len into left and right part
1055         # return early if chopping wouldn't make string shorter
1056         if ($where eq 'center') {
1057                 return $str if ($len + 5 >= length($str)); # filler is length 5
1058                 $len = int($len/2);
1059         } else {
1060                 return $str if ($len + 4 >= length($str)); # filler is length 4
1061         }
1062
1063         # regexps: ending and beginning with word part up to $add_len
1064         my $endre = qr/.{$len}\w{0,$add_len}/;
1065         my $begre = qr/\w{0,$add_len}.{$len}/;
1066
1067         if ($where eq 'left') {
1068                 $str =~ m/^(.*?)($begre)$/;
1069                 my ($lead, $body) = ($1, $2);
1070                 if (length($lead) > 4) {
1071                         $body =~ s/^[^;]*;// if ($lead =~ m/&[^;]*$/);
1072                         $lead = " ...";
1073                 }
1074                 return "$lead$body";
1075
1076         } elsif ($where eq 'center') {
1077                 $str =~ m/^($endre)(.*)$/;
1078                 my ($left, $str)  = ($1, $2);
1079                 $str =~ m/^(.*?)($begre)$/;
1080                 my ($mid, $right) = ($1, $2);
1081                 if (length($mid) > 5) {
1082                         $left  =~ s/&[^;]*$//;
1083                         $right =~ s/^[^;]*;// if ($mid =~ m/&[^;]*$/);
1084                         $mid = " ... ";
1085                 }
1086                 return "$left$mid$right";
1087
1088         } else {
1089                 $str =~ m/^($endre)(.*)$/;
1090                 my $body = $1;
1091                 my $tail = $2;
1092                 if (length($tail) > 4) {
1093                         $body =~ s/&[^;]*$//;
1094                         $tail = "... ";
1095                 }
1096                 return "$body$tail";
1097         }
1098 }
1099
1100 # takes the same arguments as chop_str, but also wraps a <span> around the
1101 # result with a title attribute if it does get chopped. Additionally, the
1102 # string is HTML-escaped.
1103 sub chop_and_escape_str {
1104         my ($str) = @_;
1105
1106         my $chopped = chop_str(@_);
1107         if ($chopped eq $str) {
1108                 return esc_html($chopped);
1109         } else {
1110                 $str =~ s/([[:cntrl:]])/?/g;
1111                 return $cgi->span({-title=>$str}, esc_html($chopped));
1112         }
1113 }
1114
1115 ## ----------------------------------------------------------------------
1116 ## functions returning short strings
1117
1118 # CSS class for given age value (in seconds)
1119 sub age_class {
1120         my $age = shift;
1121
1122         if (!defined $age) {
1123                 return "noage";
1124         } elsif ($age < 60*60*2) {
1125                 return "age0";
1126         } elsif ($age < 60*60*24*2) {
1127                 return "age1";
1128         } else {
1129                 return "age2";
1130         }
1131 }
1132
1133 # convert age in seconds to "nn units ago" string
1134 sub age_string {
1135         my $age = shift;
1136         my $age_str;
1137
1138         if ($age > 60*60*24*365*2) {
1139                 $age_str = (int $age/60/60/24/365);
1140                 $age_str .= " years ago";
1141         } elsif ($age > 60*60*24*(365/12)*2) {
1142                 $age_str = int $age/60/60/24/(365/12);
1143                 $age_str .= " months ago";
1144         } elsif ($age > 60*60*24*7*2) {
1145                 $age_str = int $age/60/60/24/7;
1146                 $age_str .= " weeks ago";
1147         } elsif ($age > 60*60*24*2) {
1148                 $age_str = int $age/60/60/24;
1149                 $age_str .= " days ago";
1150         } elsif ($age > 60*60*2) {
1151                 $age_str = int $age/60/60;
1152                 $age_str .= " hours ago";
1153         } elsif ($age > 60*2) {
1154                 $age_str = int $age/60;
1155                 $age_str .= " min ago";
1156         } elsif ($age > 2) {
1157                 $age_str = int $age;
1158                 $age_str .= " sec ago";
1159         } else {
1160                 $age_str .= " right now";
1161         }
1162         return $age_str;
1163 }
1164
1165 use constant {
1166         S_IFINVALID => 0030000,
1167         S_IFGITLINK => 0160000,
1168 };
1169
1170 # submodule/subproject, a commit object reference
1171 sub S_ISGITLINK($) {
1172         my $mode = shift;
1173
1174         return (($mode & S_IFMT) == S_IFGITLINK)
1175 }
1176
1177 # convert file mode in octal to symbolic file mode string
1178 sub mode_str {
1179         my $mode = oct shift;
1180
1181         if (S_ISGITLINK($mode)) {
1182                 return 'm---------';
1183         } elsif (S_ISDIR($mode & S_IFMT)) {
1184                 return 'drwxr-xr-x';
1185         } elsif (S_ISLNK($mode)) {
1186                 return 'lrwxrwxrwx';
1187         } elsif (S_ISREG($mode)) {
1188                 # git cares only about the executable bit
1189                 if ($mode & S_IXUSR) {
1190                         return '-rwxr-xr-x';
1191                 } else {
1192                         return '-rw-r--r--';
1193                 };
1194         } else {
1195                 return '----------';
1196         }
1197 }
1198
1199 # convert file mode in octal to file type string
1200 sub file_type {
1201         my $mode = shift;
1202
1203         if ($mode !~ m/^[0-7]+$/) {
1204                 return $mode;
1205         } else {
1206                 $mode = oct $mode;
1207         }
1208
1209         if (S_ISGITLINK($mode)) {
1210                 return "submodule";
1211         } elsif (S_ISDIR($mode & S_IFMT)) {
1212                 return "directory";
1213         } elsif (S_ISLNK($mode)) {
1214                 return "symlink";
1215         } elsif (S_ISREG($mode)) {
1216                 return "file";
1217         } else {
1218                 return "unknown";
1219         }
1220 }
1221
1222 # convert file mode in octal to file type description string
1223 sub file_type_long {
1224         my $mode = shift;
1225
1226         if ($mode !~ m/^[0-7]+$/) {
1227                 return $mode;
1228         } else {
1229                 $mode = oct $mode;
1230         }
1231
1232         if (S_ISGITLINK($mode)) {
1233                 return "submodule";
1234         } elsif (S_ISDIR($mode & S_IFMT)) {
1235                 return "directory";
1236         } elsif (S_ISLNK($mode)) {
1237                 return "symlink";
1238         } elsif (S_ISREG($mode)) {
1239                 if ($mode & S_IXUSR) {
1240                         return "executable";
1241                 } else {
1242                         return "file";
1243                 };
1244         } else {
1245                 return "unknown";
1246         }
1247 }
1248
1249
1250 ## ----------------------------------------------------------------------
1251 ## functions returning short HTML fragments, or transforming HTML fragments
1252 ## which don't belong to other sections
1253
1254 # format line of commit message.
1255 sub format_log_line_html {
1256         my $line = shift;
1257
1258         $line = esc_html($line, -nbsp=>1);
1259         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
1260                 my $hash_text = $1;
1261                 my $link =
1262                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
1263                                 -class => "text"}, $hash_text);
1264                 $line =~ s/$hash_text/$link/;
1265         }
1266         return $line;
1267 }
1268
1269 # format marker of refs pointing to given object
1270
1271 # the destination action is chosen based on object type and current context:
1272 # - for annotated tags, we choose the tag view unless it's the current view
1273 #   already, in which case we go to shortlog view
1274 # - for other refs, we keep the current view if we're in history, shortlog or
1275 #   log view, and select shortlog otherwise
1276 sub format_ref_marker {
1277         my ($refs, $id) = @_;
1278         my $markers = '';
1279
1280         if (defined $refs->{$id}) {
1281                 foreach my $ref (@{$refs->{$id}}) {
1282                         # this code exploits the fact that non-lightweight tags are the
1283                         # only indirect objects, and that they are the only objects for which
1284                         # we want to use tag instead of shortlog as action
1285                         my ($type, $name) = qw();
1286                         my $indirect = ($ref =~ s/\^\{\}$//);
1287                         # e.g. tags/v2.6.11 or heads/next
1288                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
1289                                 $type = $1;
1290                                 $name = $2;
1291                         } else {
1292                                 $type = "ref";
1293                                 $name = $ref;
1294                         }
1295
1296                         my $class = $type;
1297                         $class .= " indirect" if $indirect;
1298
1299                         my $dest_action = "shortlog";
1300
1301                         if ($indirect) {
1302                                 $dest_action = "tag" unless $action eq "tag";
1303                         } elsif ($action =~ /^(history|(short)?log)$/) {
1304                                 $dest_action = $action;
1305                         }
1306
1307                         my $dest = "";
1308                         $dest .= "refs/" unless $ref =~ m!^refs/!;
1309                         $dest .= $ref;
1310
1311                         my $link = $cgi->a({
1312                                 -href => href(
1313                                         action=>$dest_action,
1314                                         hash=>$dest
1315                                 )}, $name);
1316
1317                         $markers .= " <span class=\"$class\" title=\"$ref\">" .
1318                                 $link . "</span>";
1319                 }
1320         }
1321
1322         if ($markers) {
1323                 return ' <span class="refs">'. $markers . '</span>';
1324         } else {
1325                 return "";
1326         }
1327 }
1328
1329 # format, perhaps shortened and with markers, title line
1330 sub format_subject_html {
1331         my ($long, $short, $href, $extra) = @_;
1332         $extra = '' unless defined($extra);
1333
1334         if (length($short) < length($long)) {
1335                 return $cgi->a({-href => $href, -class => "list subject",
1336                                 -title => to_utf8($long)},
1337                        esc_html($short) . $extra);
1338         } else {
1339                 return $cgi->a({-href => $href, -class => "list subject"},
1340                        esc_html($long)  . $extra);
1341         }
1342 }
1343
1344 # format git diff header line, i.e. "diff --(git|combined|cc) ..."
1345 sub format_git_diff_header_line {
1346         my $line = shift;
1347         my $diffinfo = shift;
1348         my ($from, $to) = @_;
1349
1350         if ($diffinfo->{'nparents'}) {
1351                 # combined diff
1352                 $line =~ s!^(diff (.*?) )"?.*$!$1!;
1353                 if ($to->{'href'}) {
1354                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1355                                          esc_path($to->{'file'}));
1356                 } else { # file was deleted (no href)
1357                         $line .= esc_path($to->{'file'});
1358                 }
1359         } else {
1360                 # "ordinary" diff
1361                 $line =~ s!^(diff (.*?) )"?a/.*$!$1!;
1362                 if ($from->{'href'}) {
1363                         $line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
1364                                          'a/' . esc_path($from->{'file'}));
1365                 } else { # file was added (no href)
1366                         $line .= 'a/' . esc_path($from->{'file'});
1367                 }
1368                 $line .= ' ';
1369                 if ($to->{'href'}) {
1370                         $line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
1371                                          'b/' . esc_path($to->{'file'}));
1372                 } else { # file was deleted
1373                         $line .= 'b/' . esc_path($to->{'file'});
1374                 }
1375         }
1376
1377         return "<div class=\"diff header\">$line</div>\n";
1378 }
1379
1380 # format extended diff header line, before patch itself
1381 sub format_extended_diff_header_line {
1382         my $line = shift;
1383         my $diffinfo = shift;
1384         my ($from, $to) = @_;
1385
1386         # match <path>
1387         if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
1388                 $line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1389                                        esc_path($from->{'file'}));
1390         }
1391         if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
1392                 $line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1393                                  esc_path($to->{'file'}));
1394         }
1395         # match single <mode>
1396         if ($line =~ m/\s(\d{6})$/) {
1397                 $line .= '<span class="info"> (' .
1398                          file_type_long($1) .
1399                          ')</span>';
1400         }
1401         # match <hash>
1402         if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
1403                 # can match only for combined diff
1404                 $line = 'index ';
1405                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1406                         if ($from->{'href'}[$i]) {
1407                                 $line .= $cgi->a({-href=>$from->{'href'}[$i],
1408                                                   -class=>"hash"},
1409                                                  substr($diffinfo->{'from_id'}[$i],0,7));
1410                         } else {
1411                                 $line .= '0' x 7;
1412                         }
1413                         # separator
1414                         $line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
1415                 }
1416                 $line .= '..';
1417                 if ($to->{'href'}) {
1418                         $line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1419                                          substr($diffinfo->{'to_id'},0,7));
1420                 } else {
1421                         $line .= '0' x 7;
1422                 }
1423
1424         } elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
1425                 # can match only for ordinary diff
1426                 my ($from_link, $to_link);
1427                 if ($from->{'href'}) {
1428                         $from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
1429                                              substr($diffinfo->{'from_id'},0,7));
1430                 } else {
1431                         $from_link = '0' x 7;
1432                 }
1433                 if ($to->{'href'}) {
1434                         $to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
1435                                            substr($diffinfo->{'to_id'},0,7));
1436                 } else {
1437                         $to_link = '0' x 7;
1438                 }
1439                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
1440                 $line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
1441         }
1442
1443         return $line . "<br/>\n";
1444 }
1445
1446 # format from-file/to-file diff header
1447 sub format_diff_from_to_header {
1448         my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
1449         my $line;
1450         my $result = '';
1451
1452         $line = $from_line;
1453         #assert($line =~ m/^---/) if DEBUG;
1454         # no extra formatting for "^--- /dev/null"
1455         if (! $diffinfo->{'nparents'}) {
1456                 # ordinary (single parent) diff
1457                 if ($line =~ m!^--- "?a/!) {
1458                         if ($from->{'href'}) {
1459                                 $line = '--- a/' .
1460                                         $cgi->a({-href=>$from->{'href'}, -class=>"path"},
1461                                                 esc_path($from->{'file'}));
1462                         } else {
1463                                 $line = '--- a/' .
1464                                         esc_path($from->{'file'});
1465                         }
1466                 }
1467                 $result .= qq!<div class="diff from_file">$line</div>\n!;
1468
1469         } else {
1470                 # combined diff (merge commit)
1471                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
1472                         if ($from->{'href'}[$i]) {
1473                                 $line = '--- ' .
1474                                         $cgi->a({-href=>href(action=>"blobdiff",
1475                                                              hash_parent=>$diffinfo->{'from_id'}[$i],
1476                                                              hash_parent_base=>$parents[$i],
1477                                                              file_parent=>$from->{'file'}[$i],
1478                                                              hash=>$diffinfo->{'to_id'},
1479                                                              hash_base=>$hash,
1480                                                              file_name=>$to->{'file'}),
1481                                                  -class=>"path",
1482                                                  -title=>"diff" . ($i+1)},
1483                                                 $i+1) .
1484                                         '/' .
1485                                         $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
1486                                                 esc_path($from->{'file'}[$i]));
1487                         } else {
1488                                 $line = '--- /dev/null';
1489                         }
1490                         $result .= qq!<div class="diff from_file">$line</div>\n!;
1491                 }
1492         }
1493
1494         $line = $to_line;
1495         #assert($line =~ m/^\+\+\+/) if DEBUG;
1496         # no extra formatting for "^+++ /dev/null"
1497         if ($line =~ m!^\+\+\+ "?b/!) {
1498                 if ($to->{'href'}) {
1499                         $line = '+++ b/' .
1500                                 $cgi->a({-href=>$to->{'href'}, -class=>"path"},
1501                                         esc_path($to->{'file'}));
1502                 } else {
1503                         $line = '+++ b/' .
1504                                 esc_path($to->{'file'});
1505                 }
1506         }
1507         $result .= qq!<div class="diff to_file">$line</div>\n!;
1508
1509         return $result;
1510 }
1511
1512 # create note for patch simplified by combined diff
1513 sub format_diff_cc_simplified {
1514         my ($diffinfo, @parents) = @_;
1515         my $result = '';
1516
1517         $result .= "<div class=\"diff header\">" .
1518                    "diff --cc ";
1519         if (!is_deleted($diffinfo)) {
1520                 $result .= $cgi->a({-href => href(action=>"blob",
1521                                                   hash_base=>$hash,
1522                                                   hash=>$diffinfo->{'to_id'},
1523                                                   file_name=>$diffinfo->{'to_file'}),
1524                                     -class => "path"},
1525                                    esc_path($diffinfo->{'to_file'}));
1526         } else {
1527                 $result .= esc_path($diffinfo->{'to_file'});
1528         }
1529         $result .= "</div>\n" . # class="diff header"
1530                    "<div class=\"diff nodifferences\">" .
1531                    "Simple merge" .
1532                    "</div>\n"; # class="diff nodifferences"
1533
1534         return $result;
1535 }
1536
1537 # format patch (diff) line (not to be used for diff headers)
1538 sub format_diff_line {
1539         my $line = shift;
1540         my ($from, $to) = @_;
1541         my $diff_class = "";
1542
1543         chomp $line;
1544
1545         if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
1546                 # combined diff
1547                 my $prefix = substr($line, 0, scalar @{$from->{'href'}});
1548                 if ($line =~ m/^\@{3}/) {
1549                         $diff_class = " chunk_header";
1550                 } elsif ($line =~ m/^\\/) {
1551                         $diff_class = " incomplete";
1552                 } elsif ($prefix =~ tr/+/+/) {
1553                         $diff_class = " add";
1554                 } elsif ($prefix =~ tr/-/-/) {
1555                         $diff_class = " rem";
1556                 }
1557         } else {
1558                 # assume ordinary diff
1559                 my $char = substr($line, 0, 1);
1560                 if ($char eq '+') {
1561                         $diff_class = " add";
1562                 } elsif ($char eq '-') {
1563                         $diff_class = " rem";
1564                 } elsif ($char eq '@') {
1565                         $diff_class = " chunk_header";
1566                 } elsif ($char eq "\\") {
1567                         $diff_class = " incomplete";
1568                 }
1569         }
1570         $line = untabify($line);
1571         if ($from && $to && $line =~ m/^\@{2} /) {
1572                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
1573                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
1574
1575                 $from_lines = 0 unless defined $from_lines;
1576                 $to_lines   = 0 unless defined $to_lines;
1577
1578                 if ($from->{'href'}) {
1579                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
1580                                              -class=>"list"}, $from_text);
1581                 }
1582                 if ($to->{'href'}) {
1583                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
1584                                              -class=>"list"}, $to_text);
1585                 }
1586                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
1587                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1588                 return "<div class=\"diff$diff_class\">$line</div>\n";
1589         } elsif ($from && $to && $line =~ m/^\@{3}/) {
1590                 my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
1591                 my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
1592
1593                 @from_text = split(' ', $ranges);
1594                 for (my $i = 0; $i < @from_text; ++$i) {
1595                         ($from_start[$i], $from_nlines[$i]) =
1596                                 (split(',', substr($from_text[$i], 1)), 0);
1597                 }
1598
1599                 $to_text   = pop @from_text;
1600                 $to_start  = pop @from_start;
1601                 $to_nlines = pop @from_nlines;
1602
1603                 $line = "<span class=\"chunk_info\">$prefix ";
1604                 for (my $i = 0; $i < @from_text; ++$i) {
1605                         if ($from->{'href'}[$i]) {
1606                                 $line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
1607                                                   -class=>"list"}, $from_text[$i]);
1608                         } else {
1609                                 $line .= $from_text[$i];
1610                         }
1611                         $line .= " ";
1612                 }
1613                 if ($to->{'href'}) {
1614                         $line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
1615                                           -class=>"list"}, $to_text);
1616                 } else {
1617                         $line .= $to_text;
1618                 }
1619                 $line .= " $prefix</span>" .
1620                          "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
1621                 return "<div class=\"diff$diff_class\">$line</div>\n";
1622         }
1623         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
1624 }
1625
1626 # Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
1627 # linked.  Pass the hash of the tree/commit to snapshot.
1628 sub format_snapshot_links {
1629         my ($hash) = @_;
1630         my @snapshot_fmts = gitweb_check_feature('snapshot');
1631         @snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
1632         my $num_fmts = @snapshot_fmts;
1633         if ($num_fmts > 1) {
1634                 # A parenthesized list of links bearing format names.
1635                 # e.g. "snapshot (_tar.gz_ _zip_)"
1636                 return "snapshot (" . join(' ', map
1637                         $cgi->a({
1638                                 -href => href(
1639                                         action=>"snapshot",
1640                                         hash=>$hash,
1641                                         snapshot_format=>$_
1642                                 )
1643                         }, $known_snapshot_formats{$_}{'display'})
1644                 , @snapshot_fmts) . ")";
1645         } elsif ($num_fmts == 1) {
1646                 # A single "snapshot" link whose tooltip bears the format name.
1647                 # i.e. "_snapshot_"
1648                 my ($fmt) = @snapshot_fmts;
1649                 return
1650                         $cgi->a({
1651                                 -href => href(
1652                                         action=>"snapshot",
1653                                         hash=>$hash,
1654                                         snapshot_format=>$fmt
1655                                 ),
1656                                 -title => "in format: $known_snapshot_formats{$fmt}{'display'}"
1657                         }, "snapshot");
1658         } else { # $num_fmts == 0
1659                 return undef;
1660         }
1661 }
1662
1663 ## ......................................................................
1664 ## functions returning values to be passed, perhaps after some
1665 ## transformation, to other functions; e.g. returning arguments to href()
1666
1667 # returns hash to be passed to href to generate gitweb URL
1668 # in -title key it returns description of link
1669 sub get_feed_info {
1670         my $format = shift || 'Atom';
1671         my %res = (action => lc($format));
1672
1673         # feed links are possible only for project views
1674         return unless (defined $project);
1675         # some views should link to OPML, or to generic project feed,
1676         # or don't have specific feed yet (so they should use generic)
1677         return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
1678
1679         my $branch;
1680         # branches refs uses 'refs/heads/' prefix (fullname) to differentiate
1681         # from tag links; this also makes possible to detect branch links
1682         if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
1683             (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
1684                 $branch = $1;
1685         }
1686         # find log type for feed description (title)
1687         my $type = 'log';
1688         if (defined $file_name) {
1689                 $type  = "history of $file_name";
1690                 $type .= "/" if ($action eq 'tree');
1691                 $type .= " on '$branch'" if (defined $branch);
1692         } else {
1693                 $type = "log of $branch" if (defined $branch);
1694         }
1695
1696         $res{-title} = $type;
1697         $res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
1698         $res{'file_name'} = $file_name;
1699
1700         return %res;
1701 }
1702
1703 ## ----------------------------------------------------------------------
1704 ## git utility subroutines, invoking git commands
1705
1706 # returns path to the core git executable and the --git-dir parameter as list
1707 sub git_cmd {
1708         return $GIT, '--git-dir='.$git_dir;
1709 }
1710
1711 # quote the given arguments for passing them to the shell
1712 # quote_command("command", "arg 1", "arg with ' and ! characters")
1713 # => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
1714 # Try to avoid using this function wherever possible.
1715 sub quote_command {
1716         return join(' ',
1717                     map( { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ ));
1718 }
1719
1720 # get HEAD ref of given project as hash
1721 sub git_get_head_hash {
1722         my $project = shift;
1723         my $o_git_dir = $git_dir;
1724         my $retval = undef;
1725         $git_dir = "$projectroot/$project";
1726         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
1727                 my $head = <$fd>;
1728                 close $fd;
1729                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
1730                         $retval = $1;
1731                 }
1732         }
1733         if (defined $o_git_dir) {
1734                 $git_dir = $o_git_dir;
1735         }
1736         return $retval;
1737 }
1738
1739 # get type of given object
1740 sub git_get_type {
1741         my $hash = shift;
1742
1743         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
1744         my $type = <$fd>;
1745         close $fd or return;
1746         chomp $type;
1747         return $type;
1748 }
1749
1750 # repository configuration
1751 our $config_file = '';
1752 our %config;
1753
1754 # store multiple values for single key as anonymous array reference
1755 # single values stored directly in the hash, not as [ <value> ]
1756 sub hash_set_multi {
1757         my ($hash, $key, $value) = @_;
1758
1759         if (!exists $hash->{$key}) {
1760                 $hash->{$key} = $value;
1761         } elsif (!ref $hash->{$key}) {
1762                 $hash->{$key} = [ $hash->{$key}, $value ];
1763         } else {
1764                 push @{$hash->{$key}}, $value;
1765         }
1766 }
1767
1768 # return hash of git project configuration
1769 # optionally limited to some section, e.g. 'gitweb'
1770 sub git_parse_project_config {
1771         my $section_regexp = shift;
1772         my %config;
1773
1774         local $/ = "\0";
1775
1776         open my $fh, "-|", git_cmd(), "config", '-z', '-l',
1777                 or return;
1778
1779         while (my $keyval = <$fh>) {
1780                 chomp $keyval;
1781                 my ($key, $value) = split(/\n/, $keyval, 2);
1782
1783                 hash_set_multi(\%config, $key, $value)
1784                         if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
1785         }
1786         close $fh;
1787
1788         return %config;
1789 }
1790
1791 # convert config value to boolean, 'true' or 'false'
1792 # no value, number > 0, 'true' and 'yes' values are true
1793 # rest of values are treated as false (never as error)
1794 sub config_to_bool {
1795         my $val = shift;
1796
1797         # strip leading and trailing whitespace
1798         $val =~ s/^\s+//;
1799         $val =~ s/\s+$//;
1800
1801         return (!defined $val ||               # section.key
1802                 ($val =~ /^\d+$/ && $val) ||   # section.key = 1
1803                 ($val =~ /^(?:true|yes)$/i));  # section.key = true
1804 }
1805
1806 # convert config value to simple decimal number
1807 # an optional value suffix of 'k', 'm', or 'g' will cause the value
1808 # to be multiplied by 1024, 1048576, or 1073741824
1809 sub config_to_int {
1810         my $val = shift;
1811
1812         # strip leading and trailing whitespace
1813         $val =~ s/^\s+//;
1814         $val =~ s/\s+$//;
1815
1816         if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
1817                 $unit = lc($unit);
1818                 # unknown unit is treated as 1
1819                 return $num * ($unit eq 'g' ? 1073741824 :
1820                                $unit eq 'm' ?    1048576 :
1821                                $unit eq 'k' ?       1024 : 1);
1822         }
1823         return $val;
1824 }
1825
1826 # convert config value to array reference, if needed
1827 sub config_to_multi {
1828         my $val = shift;
1829
1830         return ref($val) ? $val : (defined($val) ? [ $val ] : []);
1831 }
1832
1833 sub git_get_project_config {
1834         my ($key, $type) = @_;
1835
1836         # key sanity check
1837         return unless ($key);
1838         $key =~ s/^gitweb\.//;
1839         return if ($key =~ m/\W/);
1840
1841         # type sanity check
1842         if (defined $type) {
1843                 $type =~ s/^--//;
1844                 $type = undef
1845                         unless ($type eq 'bool' || $type eq 'int');
1846         }
1847
1848         # get config
1849         if (!defined $config_file ||
1850             $config_file ne "$git_dir/config") {
1851                 %config = git_parse_project_config('gitweb');
1852                 $config_file = "$git_dir/config";
1853         }
1854
1855         # ensure given type
1856         if (!defined $type) {
1857                 return $config{"gitweb.$key"};
1858         } elsif ($type eq 'bool') {
1859                 # backward compatibility: 'git config --bool' returns true/false
1860                 return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
1861         } elsif ($type eq 'int') {
1862                 return config_to_int($config{"gitweb.$key"});
1863         }
1864         return $config{"gitweb.$key"};
1865 }
1866
1867 # get hash of given path at given ref
1868 sub git_get_hash_by_path {
1869         my $base = shift;
1870         my $path = shift || return undef;
1871         my $type = shift;
1872
1873         $path =~ s,/+$,,;
1874
1875         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1876                 or die_error(500, "Open git-ls-tree failed");
1877         my $line = <$fd>;
1878         close $fd or return undef;
1879
1880         if (!defined $line) {
1881                 # there is no tree or hash given by $path at $base
1882                 return undef;
1883         }
1884
1885         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1886         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1887         if (defined $type && $type ne $2) {
1888                 # type doesn't match
1889                 return undef;
1890         }
1891         return $3;
1892 }
1893
1894 # get path of entry with given hash at given tree-ish (ref)
1895 # used to get 'from' filename for combined diff (merge commit) for renames
1896 sub git_get_path_by_hash {
1897         my $base = shift || return;
1898         my $hash = shift || return;
1899
1900         local $/ = "\0";
1901
1902         open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
1903                 or return undef;
1904         while (my $line = <$fd>) {
1905                 chomp $line;
1906
1907                 #'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423  gitweb'
1908                 #'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f  gitweb/README'
1909                 if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
1910                         close $fd;
1911                         return $1;
1912                 }
1913         }
1914         close $fd;
1915         return undef;
1916 }
1917
1918 ## ......................................................................
1919 ## git utility functions, directly accessing git repository
1920
1921 sub git_get_project_description {
1922         my $path = shift;
1923
1924         $git_dir = "$projectroot/$path";
1925         open my $fd, "$git_dir/description"
1926                 or return git_get_project_config('description');
1927         my $descr = <$fd>;
1928         close $fd;
1929         if (defined $descr) {
1930                 chomp $descr;
1931         }
1932         return $descr;
1933 }
1934
1935 sub git_get_project_ctags {
1936         my $path = shift;
1937         my $ctags = {};
1938
1939         $git_dir = "$projectroot/$path";
1940         foreach (<$git_dir/ctags/*>) {
1941                 open CT, $_ or next;
1942                 my $val = <CT>;
1943                 chomp $val;
1944                 close CT;
1945                 my $ctag = $_; $ctag =~ s#.*/##;
1946                 $ctags->{$ctag} = $val;
1947         }
1948         $ctags;
1949 }
1950
1951 sub git_populate_project_tagcloud {
1952         my $ctags = shift;
1953
1954         # First, merge different-cased tags; tags vote on casing
1955         my %ctags_lc;
1956         foreach (keys %$ctags) {
1957                 $ctags_lc{lc $_}->{count} += $ctags->{$_};
1958                 if (not $ctags_lc{lc $_}->{topcount}
1959                     or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
1960                         $ctags_lc{lc $_}->{topcount} = $ctags->{$_};
1961                         $ctags_lc{lc $_}->{topname} = $_;
1962                 }
1963         }
1964
1965         my $cloud;
1966         if (eval { require HTML::TagCloud; 1; }) {
1967                 $cloud = HTML::TagCloud->new;
1968                 foreach (sort keys %ctags_lc) {
1969                         # Pad the title with spaces so that the cloud looks
1970                         # less crammed.
1971                         my $title = $ctags_lc{$_}->{topname};
1972                         $title =~ s/ /&nbsp;/g;
1973                         $title =~ s/^/&nbsp;/g;
1974                         $title =~ s/$/&nbsp;/g;
1975                         $cloud->add($title, $home_link."?by_tag=".$_, $ctags_lc{$_}->{count});
1976                 }
1977         } else {
1978                 $cloud = \%ctags_lc;
1979         }
1980         $cloud;
1981 }
1982
1983 sub git_show_project_tagcloud {
1984         my ($cloud, $count) = @_;
1985         print STDERR ref($cloud)."..\n";
1986         if (ref $cloud eq 'HTML::TagCloud') {
1987                 return $cloud->html_and_css($count);
1988         } else {
1989                 my @tags = sort { $cloud->{$a}->{count} <=> $cloud->{$b}->{count} } keys %$cloud;
1990                 return '<p align="center">' . join (', ', map {
1991                         "<a href=\"$home_link?by_tag=$_\">$cloud->{$_}->{topname}</a>"
1992                 } splice(@tags, 0, $count)) . '</p>';
1993         }
1994 }
1995
1996 sub git_get_project_url_list {
1997         my $path = shift;
1998
1999         $git_dir = "$projectroot/$path";
2000         open my $fd, "$git_dir/cloneurl"
2001                 or return wantarray ?
2002                 @{ config_to_multi(git_get_project_config('url')) } :
2003                    config_to_multi(git_get_project_config('url'));
2004         my @git_project_url_list = map { chomp; $_ } <$fd>;
2005         close $fd;
2006
2007         return wantarray ? @git_project_url_list : \@git_project_url_list;
2008 }
2009
2010 sub git_get_projects_list {
2011         my ($filter) = @_;
2012         my @list;
2013
2014         $filter ||= '';
2015         $filter =~ s/\.git$//;
2016
2017         my ($check_forks) = gitweb_check_feature('forks');
2018
2019         if (-d $projects_list) {
2020                 # search in directory
2021                 my $dir = $projects_list . ($filter ? "/$filter" : '');
2022                 # remove the trailing "/"
2023                 $dir =~ s!/+$!!;
2024                 my $pfxlen = length("$dir");
2025                 my $pfxdepth = ($dir =~ tr!/!!);
2026
2027                 File::Find::find({
2028                         follow_fast => 1, # follow symbolic links
2029                         follow_skip => 2, # ignore duplicates
2030                         dangling_symlinks => 0, # ignore dangling symlinks, silently
2031                         wanted => sub {
2032                                 # skip project-list toplevel, if we get it.
2033                                 return if (m!^[/.]$!);
2034                                 # only directories can be git repositories
2035                                 return unless (-d $_);
2036                                 # don't traverse too deep (Find is super slow on os x)
2037                                 if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
2038                                         $File::Find::prune = 1;
2039                                         return;
2040                                 }
2041
2042                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
2043                                 # we check related file in $projectroot
2044                                 if (check_export_ok("$projectroot/$filter/$subdir")) {
2045                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
2046                                         $File::Find::prune = 1;
2047                                 }
2048                         },
2049                 }, "$dir");
2050
2051         } elsif (-f $projects_list) {
2052                 # read from file(url-encoded):
2053                 # 'git%2Fgit.git Linus+Torvalds'
2054                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2055                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2056                 my %paths;
2057                 open my ($fd), $projects_list or return;
2058         PROJECT:
2059                 while (my $line = <$fd>) {
2060                         chomp $line;
2061                         my ($path, $owner) = split ' ', $line;
2062                         $path = unescape($path);
2063                         $owner = unescape($owner);
2064                         if (!defined $path) {
2065                                 next;
2066                         }
2067                         if ($filter ne '') {
2068                                 # looking for forks;
2069                                 my $pfx = substr($path, 0, length($filter));
2070                                 if ($pfx ne $filter) {
2071                                         next PROJECT;
2072                                 }
2073                                 my $sfx = substr($path, length($filter));
2074                                 if ($sfx !~ /^\/.*\.git$/) {
2075                                         next PROJECT;
2076                                 }
2077                         } elsif ($check_forks) {
2078                         PATH:
2079                                 foreach my $filter (keys %paths) {
2080                                         # looking for forks;
2081                                         my $pfx = substr($path, 0, length($filter));
2082                                         if ($pfx ne $filter) {
2083                                                 next PATH;
2084                                         }
2085                                         my $sfx = substr($path, length($filter));
2086                                         if ($sfx !~ /^\/.*\.git$/) {
2087                                                 next PATH;
2088                                         }
2089                                         # is a fork, don't include it in
2090                                         # the list
2091                                         next PROJECT;
2092                                 }
2093                         }
2094                         if (check_export_ok("$projectroot/$path")) {
2095                                 my $pr = {
2096                                         path => $path,
2097                                         owner => to_utf8($owner),
2098                                 };
2099                                 push @list, $pr;
2100                                 (my $forks_path = $path) =~ s/\.git$//;
2101                                 $paths{$forks_path}++;
2102                         }
2103                 }
2104                 close $fd;
2105         }
2106         return @list;
2107 }
2108
2109 our $gitweb_project_owner = undef;
2110 sub git_get_project_list_from_file {
2111
2112         return if (defined $gitweb_project_owner);
2113
2114         $gitweb_project_owner = {};
2115         # read from file (url-encoded):
2116         # 'git%2Fgit.git Linus+Torvalds'
2117         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
2118         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
2119         if (-f $projects_list) {
2120                 open (my $fd , $projects_list);
2121                 while (my $line = <$fd>) {
2122                         chomp $line;
2123                         my ($pr, $ow) = split ' ', $line;
2124                         $pr = unescape($pr);
2125                         $ow = unescape($ow);
2126                         $gitweb_project_owner->{$pr} = to_utf8($ow);
2127                 }
2128                 close $fd;
2129         }
2130 }
2131
2132 sub git_get_project_owner {
2133         my $project = shift;
2134         my $owner;
2135
2136         return undef unless $project;
2137         $git_dir = "$projectroot/$project";
2138
2139         if (!defined $gitweb_project_owner) {
2140                 git_get_project_list_from_file();
2141         }
2142
2143         if (exists $gitweb_project_owner->{$project}) {
2144                 $owner = $gitweb_project_owner->{$project};
2145         }
2146         if (!defined $owner){
2147                 $owner = git_get_project_config('owner');
2148         }
2149         if (!defined $owner) {
2150                 $owner = get_file_owner("$git_dir");
2151         }
2152
2153         return $owner;
2154 }
2155
2156 sub git_get_last_activity {
2157         my ($path) = @_;
2158         my $fd;
2159
2160         $git_dir = "$projectroot/$path";
2161         open($fd, "-|", git_cmd(), 'for-each-ref',
2162              '--format=%(committer)',
2163              '--sort=-committerdate',
2164              '--count=1',
2165              'refs/heads') or return;
2166         my $most_recent = <$fd>;
2167         close $fd or return;
2168         if (defined $most_recent &&
2169             $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
2170                 my $timestamp = $1;
2171                 my $age = time - $timestamp;
2172                 return ($age, age_string($age));
2173         }
2174         return (undef, undef);
2175 }
2176
2177 sub git_get_references {
2178         my $type = shift || "";
2179         my %refs;
2180         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
2181         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
2182         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
2183                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
2184                 or return;
2185
2186         while (my $line = <$fd>) {
2187                 chomp $line;
2188                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
2189                         if (defined $refs{$1}) {
2190                                 push @{$refs{$1}}, $2;
2191                         } else {
2192                                 $refs{$1} = [ $2 ];
2193                         }
2194                 }
2195         }
2196         close $fd or return;
2197         return \%refs;
2198 }
2199
2200 sub git_get_rev_name_tags {
2201         my $hash = shift || return undef;
2202
2203         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
2204                 or return;
2205         my $name_rev = <$fd>;
2206         close $fd;
2207
2208         if ($name_rev =~ m|^$hash tags/(.*)$|) {
2209                 return $1;
2210         } else {
2211                 # catches also '$hash undefined' output
2212                 return undef;
2213         }
2214 }
2215
2216 ## ----------------------------------------------------------------------
2217 ## parse to hash functions
2218
2219 sub parse_date {
2220         my $epoch = shift;
2221         my $tz = shift || "-0000";
2222
2223         my %date;
2224         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
2225         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
2226         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
2227         $date{'hour'} = $hour;
2228         $date{'minute'} = $min;
2229         $date{'mday'} = $mday;
2230         $date{'day'} = $days[$wday];
2231         $date{'month'} = $months[$mon];
2232         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
2233                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
2234         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
2235                              $mday, $months[$mon], $hour ,$min;
2236         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
2237                              1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
2238
2239         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
2240         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
2241         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
2242         $date{'hour_local'} = $hour;
2243         $date{'minute_local'} = $min;
2244         $date{'tz_local'} = $tz;
2245         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
2246                                   1900+$year, $mon+1, $mday,
2247                                   $hour, $min, $sec, $tz);
2248         return %date;
2249 }
2250
2251 sub parse_tag {
2252         my $tag_id = shift;
2253         my %tag;
2254         my @comment;
2255
2256         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
2257         $tag{'id'} = $tag_id;
2258         while (my $line = <$fd>) {
2259                 chomp $line;
2260                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
2261                         $tag{'object'} = $1;
2262                 } elsif ($line =~ m/^type (.+)$/) {
2263                         $tag{'type'} = $1;
2264                 } elsif ($line =~ m/^tag (.+)$/) {
2265                         $tag{'name'} = $1;
2266                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
2267                         $tag{'author'} = $1;
2268                         $tag{'epoch'} = $2;
2269                         $tag{'tz'} = $3;
2270                 } elsif ($line =~ m/--BEGIN/) {
2271                         push @comment, $line;
2272                         last;
2273                 } elsif ($line eq "") {
2274                         last;
2275                 }
2276         }
2277         push @comment, <$fd>;
2278         $tag{'comment'} = \@comment;
2279         close $fd or return;
2280         if (!defined $tag{'name'}) {
2281                 return
2282         };
2283         return %tag
2284 }
2285
2286 sub parse_commit_text {
2287         my ($commit_text, $withparents) = @_;
2288         my @commit_lines = split '\n', $commit_text;
2289         my %co;
2290
2291         pop @commit_lines; # Remove '\0'
2292
2293         if (! @commit_lines) {
2294                 return;
2295         }
2296
2297         my $header = shift @commit_lines;
2298         if ($header !~ m/^[0-9a-fA-F]{40}/) {
2299                 return;
2300         }
2301         ($co{'id'}, my @parents) = split ' ', $header;
2302         while (my $line = shift @commit_lines) {
2303                 last if $line eq "\n";
2304                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
2305                         $co{'tree'} = $1;
2306                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
2307                         push @parents, $1;
2308                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
2309                         $co{'author'} = $1;
2310                         $co{'author_epoch'} = $2;
2311                         $co{'author_tz'} = $3;
2312                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
2313                                 $co{'author_name'}  = $1;
2314                                 $co{'author_email'} = $2;
2315                         } else {
2316                                 $co{'author_name'} = $co{'author'};
2317                         }
2318                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
2319                         $co{'committer'} = $1;
2320                         $co{'committer_epoch'} = $2;
2321                         $co{'committer_tz'} = $3;
2322                         $co{'committer_name'} = $co{'committer'};
2323                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
2324                                 $co{'committer_name'}  = $1;
2325                                 $co{'committer_email'} = $2;
2326                         } else {
2327                                 $co{'committer_name'} = $co{'committer'};
2328                         }
2329                 }
2330         }
2331         if (!defined $co{'tree'}) {
2332                 return;
2333         };
2334         $co{'parents'} = \@parents;
2335         $co{'parent'} = $parents[0];
2336
2337         foreach my $title (@commit_lines) {
2338                 $title =~ s/^    //;
2339                 if ($title ne "") {
2340                         $co{'title'} = chop_str($title, 80, 5);
2341                         # remove leading stuff of merges to make the interesting part visible
2342                         if (length($title) > 50) {
2343                                 $title =~ s/^Automatic //;
2344                                 $title =~ s/^merge (of|with) /Merge ... /i;
2345                                 if (length($title) > 50) {
2346                                         $title =~ s/(http|rsync):\/\///;
2347                                 }
2348                                 if (length($title) > 50) {
2349                                         $title =~ s/(master|www|rsync)\.//;
2350                                 }
2351                                 if (length($title) > 50) {
2352                                         $title =~ s/kernel.org:?//;
2353                                 }
2354                                 if (length($title) > 50) {
2355                                         $title =~ s/\/pub\/scm//;
2356                                 }
2357                         }
2358                         $co{'title_short'} = chop_str($title, 50, 5);
2359                         last;
2360                 }
2361         }
2362         if (! defined $co{'title'} || $co{'title'} eq "") {
2363                 $co{'title'} = $co{'title_short'} = '(no commit message)';
2364         }
2365         # remove added spaces
2366         foreach my $line (@commit_lines) {
2367                 $line =~ s/^    //;
2368         }
2369         $co{'comment'} = \@commit_lines;
2370
2371         my $age = time - $co{'committer_epoch'};
2372         $co{'age'} = $age;
2373         $co{'age_string'} = age_string($age);
2374         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
2375         if ($age > 60*60*24*7*2) {
2376                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2377                 $co{'age_string_age'} = $co{'age_string'};
2378         } else {
2379                 $co{'age_string_date'} = $co{'age_string'};
2380                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
2381         }
2382         return %co;
2383 }
2384
2385 sub parse_commit {
2386         my ($commit_id) = @_;
2387         my %co;
2388
2389         local $/ = "\0";
2390
2391         open my $fd, "-|", git_cmd(), "rev-list",
2392                 "--parents",
2393                 "--header",
2394                 "--max-count=1",
2395                 $commit_id,
2396                 "--",
2397                 or die_error(500, "Open git-rev-list failed");
2398         %co = parse_commit_text(<$fd>, 1);
2399         close $fd;
2400
2401         return %co;
2402 }
2403
2404 sub parse_commits {
2405         my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
2406         my @cos;
2407
2408         $maxcount ||= 1;
2409         $skip ||= 0;
2410
2411         local $/ = "\0";
2412
2413         open my $fd, "-|", git_cmd(), "rev-list",
2414                 "--header",
2415                 @args,
2416                 ("--max-count=" . $maxcount),
2417                 ("--skip=" . $skip),
2418                 @extra_options,
2419                 $commit_id,
2420                 "--",
2421                 ($filename ? ($filename) : ())
2422                 or die_error(500, "Open git-rev-list failed");
2423         while (my $line = <$fd>) {
2424                 my %co = parse_commit_text($line);
2425                 push @cos, \%co;
2426         }
2427         close $fd;
2428
2429         return wantarray ? @cos : \@cos;
2430 }
2431
2432 # parse line of git-diff-tree "raw" output
2433 sub parse_difftree_raw_line {
2434         my $line = shift;
2435         my %res;
2436
2437         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
2438         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
2439         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
2440                 $res{'from_mode'} = $1;
2441                 $res{'to_mode'} = $2;
2442                 $res{'from_id'} = $3;
2443                 $res{'to_id'} = $4;
2444                 $res{'status'} = $5;
2445                 $res{'similarity'} = $6;
2446                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
2447                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
2448                 } else {
2449                         $res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
2450                 }
2451         }
2452         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
2453         # combined diff (for merge commit)
2454         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
2455                 $res{'nparents'}  = length($1);
2456                 $res{'from_mode'} = [ split(' ', $2) ];
2457                 $res{'to_mode'} = pop @{$res{'from_mode'}};
2458                 $res{'from_id'} = [ split(' ', $3) ];
2459                 $res{'to_id'} = pop @{$res{'from_id'}};
2460                 $res{'status'} = [ split('', $4) ];
2461                 $res{'to_file'} = unquote($5);
2462         }
2463         # 'c512b523472485aef4fff9e57b229d9d243c967f'
2464         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
2465                 $res{'commit'} = $1;
2466         }
2467
2468         return wantarray ? %res : \%res;
2469 }
2470
2471 # wrapper: return parsed line of git-diff-tree "raw" output
2472 # (the argument might be raw line, or parsed info)
2473 sub parsed_difftree_line {
2474         my $line_or_ref = shift;
2475
2476         if (ref($line_or_ref) eq "HASH") {
2477                 # pre-parsed (or generated by hand)
2478                 return $line_or_ref;
2479         } else {
2480                 return parse_difftree_raw_line($line_or_ref);
2481         }
2482 }
2483
2484 # parse line of git-ls-tree output
2485 sub parse_ls_tree_line ($;%) {
2486         my $line = shift;
2487         my %opts = @_;
2488         my %res;
2489
2490         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
2491         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
2492
2493         $res{'mode'} = $1;
2494         $res{'type'} = $2;
2495         $res{'hash'} = $3;
2496         if ($opts{'-z'}) {
2497                 $res{'name'} = $4;
2498         } else {
2499                 $res{'name'} = unquote($4);
2500         }
2501
2502         return wantarray ? %res : \%res;
2503 }
2504
2505 # generates _two_ hashes, references to which are passed as 2 and 3 argument
2506 sub parse_from_to_diffinfo {
2507         my ($diffinfo, $from, $to, @parents) = @_;
2508
2509         if ($diffinfo->{'nparents'}) {
2510                 # combined diff
2511                 $from->{'file'} = [];
2512                 $from->{'href'} = [];
2513                 fill_from_file_info($diffinfo, @parents)
2514                         unless exists $diffinfo->{'from_file'};
2515                 for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
2516                         $from->{'file'}[$i] =
2517                                 defined $diffinfo->{'from_file'}[$i] ?
2518                                         $diffinfo->{'from_file'}[$i] :
2519                                         $diffinfo->{'to_file'};
2520                         if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
2521                                 $from->{'href'}[$i] = href(action=>"blob",
2522                                                            hash_base=>$parents[$i],
2523                                                            hash=>$diffinfo->{'from_id'}[$i],
2524                                                            file_name=>$from->{'file'}[$i]);
2525                         } else {
2526                                 $from->{'href'}[$i] = undef;
2527                         }
2528                 }
2529         } else {
2530                 # ordinary (not combined) diff
2531                 $from->{'file'} = $diffinfo->{'from_file'};
2532                 if ($diffinfo->{'status'} ne "A") { # not new (added) file
2533                         $from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2534                                                hash=>$diffinfo->{'from_id'},
2535                                                file_name=>$from->{'file'});
2536                 } else {
2537                         delete $from->{'href'};
2538                 }
2539         }
2540
2541         $to->{'file'} = $diffinfo->{'to_file'};
2542         if (!is_deleted($diffinfo)) { # file exists in result
2543                 $to->{'href'} = href(action=>"blob", hash_base=>$hash,
2544                                      hash=>$diffinfo->{'to_id'},
2545                                      file_name=>$to->{'file'});
2546         } else {
2547                 delete $to->{'href'};
2548         }
2549 }
2550
2551 ## ......................................................................
2552 ## parse to array of hashes functions
2553
2554 sub git_get_heads_list {
2555         my $limit = shift;
2556         my @headslist;
2557
2558         open my $fd, '-|', git_cmd(), 'for-each-ref',
2559                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
2560                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
2561                 'refs/heads'
2562                 or return;
2563         while (my $line = <$fd>) {
2564                 my %ref_item;
2565
2566                 chomp $line;
2567                 my ($refinfo, $committerinfo) = split(/\0/, $line);
2568                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
2569                 my ($committer, $epoch, $tz) =
2570                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
2571                 $ref_item{'fullname'}  = $name;
2572                 $name =~ s!^refs/heads/!!;
2573
2574                 $ref_item{'name'}  = $name;
2575                 $ref_item{'id'}    = $hash;
2576                 $ref_item{'title'} = $title || '(no commit message)';
2577                 $ref_item{'epoch'} = $epoch;
2578                 if ($epoch) {
2579                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2580                 } else {
2581                         $ref_item{'age'} = "unknown";
2582                 }
2583
2584                 push @headslist, \%ref_item;
2585         }
2586         close $fd;
2587
2588         return wantarray ? @headslist : \@headslist;
2589 }
2590
2591 sub git_get_tags_list {
2592         my $limit = shift;
2593         my @tagslist;
2594
2595         open my $fd, '-|', git_cmd(), 'for-each-ref',
2596                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
2597                 '--format=%(objectname) %(objecttype) %(refname) '.
2598                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
2599                 'refs/tags'
2600                 or return;
2601         while (my $line = <$fd>) {
2602                 my %ref_item;
2603
2604                 chomp $line;
2605                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
2606                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
2607                 my ($creator, $epoch, $tz) =
2608                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
2609                 $ref_item{'fullname'} = $name;
2610                 $name =~ s!^refs/tags/!!;
2611
2612                 $ref_item{'type'} = $type;
2613                 $ref_item{'id'} = $id;
2614                 $ref_item{'name'} = $name;
2615                 if ($type eq "tag") {
2616                         $ref_item{'subject'} = $title;
2617                         $ref_item{'reftype'} = $reftype;
2618                         $ref_item{'refid'}   = $refid;
2619                 } else {
2620                         $ref_item{'reftype'} = $type;
2621                         $ref_item{'refid'}   = $id;
2622                 }
2623
2624                 if ($type eq "tag" || $type eq "commit") {
2625                         $ref_item{'epoch'} = $epoch;
2626                         if ($epoch) {
2627                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
2628                         } else {
2629                                 $ref_item{'age'} = "unknown";
2630                         }
2631                 }
2632
2633                 push @tagslist, \%ref_item;
2634         }
2635         close $fd;
2636
2637         return wantarray ? @tagslist : \@tagslist;
2638 }
2639
2640 ## ----------------------------------------------------------------------
2641 ## filesystem-related functions
2642
2643 sub get_file_owner {
2644         my $path = shift;
2645
2646         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
2647         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
2648         if (!defined $gcos) {
2649                 return undef;
2650         }
2651         my $owner = $gcos;
2652         $owner =~ s/[,;].*$//;
2653         return to_utf8($owner);
2654 }
2655
2656 ## ......................................................................
2657 ## mimetype related functions
2658
2659 sub mimetype_guess_file {
2660         my $filename = shift;
2661         my $mimemap = shift;
2662         -r $mimemap or return undef;
2663
2664         my %mimemap;
2665         open(MIME, $mimemap) or return undef;
2666         while (<MIME>) {
2667                 next if m/^#/; # skip comments
2668                 my ($mime, $exts) = split(/\t+/);
2669                 if (defined $exts) {
2670                         my @exts = split(/\s+/, $exts);
2671                         foreach my $ext (@exts) {
2672                                 $mimemap{$ext} = $mime;
2673                         }
2674                 }
2675         }
2676         close(MIME);
2677
2678         $filename =~ /\.([^.]*)$/;
2679         return $mimemap{$1};
2680 }
2681
2682 sub mimetype_guess {
2683         my $filename = shift;
2684         my $mime;
2685         $filename =~ /\./ or return undef;
2686
2687         if ($mimetypes_file) {
2688                 my $file = $mimetypes_file;
2689                 if ($file !~ m!^/!) { # if it is relative path
2690                         # it is relative to project
2691                         $file = "$projectroot/$project/$file";
2692                 }
2693                 $mime = mimetype_guess_file($filename, $file);
2694         }
2695         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
2696         return $mime;
2697 }
2698
2699 sub blob_mimetype {
2700         my $fd = shift;
2701         my $filename = shift;
2702
2703         if ($filename) {
2704                 my $mime = mimetype_guess($filename);
2705                 $mime and return $mime;
2706         }
2707
2708         # just in case
2709         return $default_blob_plain_mimetype unless $fd;
2710
2711         if (-T $fd) {
2712                 return 'text/plain';
2713         } elsif (! $filename) {
2714                 return 'application/octet-stream';
2715         } elsif ($filename =~ m/\.png$/i) {
2716                 return 'image/png';
2717         } elsif ($filename =~ m/\.gif$/i) {
2718                 return 'image/gif';
2719         } elsif ($filename =~ m/\.jpe?g$/i) {
2720                 return 'image/jpeg';
2721         } else {
2722                 return 'application/octet-stream';
2723         }
2724 }
2725
2726 sub blob_contenttype {
2727         my ($fd, $file_name, $type) = @_;
2728
2729         $type ||= blob_mimetype($fd, $file_name);
2730         if ($type eq 'text/plain' && defined $default_text_plain_charset) {
2731                 $type .= "; charset=$default_text_plain_charset";
2732         }
2733
2734         return $type;
2735 }
2736
2737 ## ======================================================================
2738 ## functions printing HTML: header, footer, error page
2739
2740 sub git_header_html {
2741         my $status = shift || "200 OK";
2742         my $expires = shift;
2743
2744         my $title = "$site_name";
2745         if (defined $project) {
2746                 $title .= " - " . to_utf8($project);
2747                 if (defined $action) {
2748                         $title .= "/$action";
2749                         if (defined $file_name) {
2750                                 $title .= " - " . esc_path($file_name);
2751                                 if ($action eq "tree" && $file_name !~ m|/$|) {
2752                                         $title .= "/";
2753                                 }
2754                         }
2755                 }
2756         }
2757         my $content_type;
2758         # require explicit support from the UA if we are to send the page as
2759         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
2760         # we have to do this because MSIE sometimes globs '*/*', pretending to
2761         # support xhtml+xml but choking when it gets what it asked for.
2762         if (defined $cgi->http('HTTP_ACCEPT') &&
2763             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
2764             $cgi->Accept('application/xhtml+xml') != 0) {
2765                 $content_type = 'application/xhtml+xml';
2766         } else {
2767                 $content_type = 'text/html';
2768         }
2769         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
2770                            -status=> $status, -expires => $expires);
2771         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
2772         print <<EOF;
2773 <?xml version="1.0" encoding="utf-8"?>
2774 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
2775 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
2776 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
2777 <!-- git core binaries version $git_version -->
2778 <head>
2779 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
2780 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
2781 <meta name="robots" content="index, nofollow"/>
2782 <title>$title</title>
2783 EOF
2784 # print out each stylesheet that exist
2785         if (defined $stylesheet) {
2786 #provides backwards capability for those people who define style sheet in a config file
2787                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2788         } else {
2789                 foreach my $stylesheet (@stylesheets) {
2790                         next unless $stylesheet;
2791                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
2792                 }
2793         }
2794         if (defined $project) {
2795                 my %href_params = get_feed_info();
2796                 if (!exists $href_params{'-title'}) {
2797                         $href_params{'-title'} = 'log';
2798                 }
2799
2800                 foreach my $format qw(RSS Atom) {
2801                         my $type = lc($format);
2802                         my %link_attr = (
2803                                 '-rel' => 'alternate',
2804                                 '-title' => "$project - $href_params{'-title'} - $format feed",
2805                                 '-type' => "application/$type+xml"
2806                         );
2807
2808                         $href_params{'action'} = $type;
2809                         $link_attr{'-href'} = href(%href_params);
2810                         print "<link ".
2811                               "rel=\"$link_attr{'-rel'}\" ".
2812                               "title=\"$link_attr{'-title'}\" ".
2813                               "href=\"$link_attr{'-href'}\" ".
2814                               "type=\"$link_attr{'-type'}\" ".
2815                               "/>\n";
2816
2817                         $href_params{'extra_options'} = '--no-merges';
2818                         $link_attr{'-href'} = href(%href_params);
2819                         $link_attr{'-title'} .= ' (no merges)';
2820                         print "<link ".
2821                               "rel=\"$link_attr{'-rel'}\" ".
2822                               "title=\"$link_attr{'-title'}\" ".
2823                               "href=\"$link_attr{'-href'}\" ".
2824                               "type=\"$link_attr{'-type'}\" ".
2825                               "/>\n";
2826                 }
2827
2828         } else {
2829                 printf('<link rel="alternate" title="%s projects list" '.
2830                        'href="%s" type="text/plain; charset=utf-8" />'."\n",
2831                        $site_name, href(project=>undef, action=>"project_index"));
2832                 printf('<link rel="alternate" title="%s projects feeds" '.
2833                        'href="%s" type="text/x-opml" />'."\n",
2834                        $site_name, href(project=>undef, action=>"opml"));
2835         }
2836         if (defined $favicon) {
2837                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png" />\n);
2838         }
2839
2840         print "</head>\n" .
2841               "<body>\n";
2842
2843         if (-f $site_header) {
2844                 open (my $fd, $site_header);
2845                 print <$fd>;
2846                 close $fd;
2847         }
2848
2849         print "<div class=\"page_header\">\n" .
2850               $cgi->a({-href => esc_url($logo_url),
2851                        -title => $logo_label},
2852                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
2853         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
2854         if (defined $project) {
2855                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
2856                 if (defined $action) {
2857                         print " / $action";
2858                 }
2859                 print "\n";
2860         }
2861         print "</div>\n";
2862
2863         my ($have_search) = gitweb_check_feature('search');
2864         if (defined $project && $have_search) {
2865                 if (!defined $searchtext) {
2866                         $searchtext = "";
2867                 }
2868                 my $search_hash;
2869                 if (defined $hash_base) {
2870                         $search_hash = $hash_base;
2871                 } elsif (defined $hash) {
2872                         $search_hash = $hash;
2873                 } else {
2874                         $search_hash = "HEAD";
2875                 }
2876                 my $action = $my_uri;
2877                 my ($use_pathinfo) = gitweb_check_feature('pathinfo');
2878                 if ($use_pathinfo) {
2879                         $action .= "/".esc_url($project);
2880                 }
2881                 print $cgi->startform(-method => "get", -action => $action) .
2882                       "<div class=\"search\">\n" .
2883                       (!$use_pathinfo &&
2884                       $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
2885                       $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
2886                       $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
2887                       $cgi->popup_menu(-name => 'st', -default => 'commit',
2888                                        -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
2889                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
2890                       " search:\n",
2891                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
2892                       "<span title=\"Extended regular expression\">" .
2893                       $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
2894                                      -checked => $search_use_regexp) .
2895                       "</span>" .
2896                       "</div>" .
2897                       $cgi->end_form() . "\n";
2898         }
2899 }
2900
2901 sub git_footer_html {
2902         my $feed_class = 'rss_logo';
2903
2904         print "<div class=\"page_footer\">\n";
2905         if (defined $project) {
2906                 my $descr = git_get_project_description($project);
2907                 if (defined $descr) {
2908                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
2909                 }
2910
2911                 my %href_params = get_feed_info();
2912                 if (!%href_params) {
2913                         $feed_class .= ' generic';
2914                 }
2915                 $href_params{'-title'} ||= 'log';
2916
2917                 foreach my $format qw(RSS Atom) {
2918                         $href_params{'action'} = lc($format);
2919                         print $cgi->a({-href => href(%href_params),
2920                                       -title => "$href_params{'-title'} $format feed",
2921                                       -class => $feed_class}, $format)."\n";
2922                 }
2923
2924         } else {
2925                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
2926                               -class => $feed_class}, "OPML") . " ";
2927                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
2928                               -class => $feed_class}, "TXT") . "\n";
2929         }
2930         print "</div>\n"; # class="page_footer"
2931
2932         if (-f $site_footer) {
2933                 open (my $fd, $site_footer);
2934                 print <$fd>;
2935                 close $fd;
2936         }
2937
2938         print "</body>\n" .
2939               "</html>";
2940 }
2941
2942 # die_error(<http_status_code>, <error_message>)
2943 # Example: die_error(404, 'Hash not found')
2944 # By convention, use the following status codes (as defined in RFC 2616):
2945 # 400: Invalid or missing CGI parameters, or
2946 #      requested object exists but has wrong type.
2947 # 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
2948 #      this server or project.
2949 # 404: Requested object/revision/project doesn't exist.
2950 # 500: The server isn't configured properly, or
2951 #      an internal error occurred (e.g. failed assertions caused by bugs), or
2952 #      an unknown error occurred (e.g. the git binary died unexpectedly).
2953 sub die_error {
2954         my $status = shift || 500;
2955         my $error = shift || "Internal server error";
2956
2957         my %http_responses = (400 => '400 Bad Request',
2958                               403 => '403 Forbidden',
2959                               404 => '404 Not Found',
2960                               500 => '500 Internal Server Error');
2961         git_header_html($http_responses{$status});
2962         print <<EOF;
2963 <div class="page_body">
2964 <br /><br />
2965 $status - $error
2966 <br />
2967 </div>
2968 EOF
2969         git_footer_html();
2970         exit;
2971 }
2972
2973 ## ----------------------------------------------------------------------
2974 ## functions printing or outputting HTML: navigation
2975
2976 sub git_print_page_nav {
2977         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
2978         $extra = '' if !defined $extra; # pager or formats
2979
2980         my @navs = qw(summary shortlog log commit commitdiff tree);
2981         if ($suppress) {
2982                 @navs = grep { $_ ne $suppress } @navs;
2983         }
2984
2985         my %arg = map { $_ => {action=>$_} } @navs;
2986         if (defined $head) {
2987                 for (qw(commit commitdiff)) {
2988                         $arg{$_}{'hash'} = $head;
2989                 }
2990                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
2991                         for (qw(shortlog log)) {
2992                                 $arg{$_}{'hash'} = $head;
2993                         }
2994                 }
2995         }
2996
2997         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
2998         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
2999
3000         my @actions = gitweb_check_feature('actions');
3001         while (@actions) {
3002                 my ($label, $link, $pos) = (shift(@actions), shift(@actions), shift(@actions));
3003                 @navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
3004                 # munch munch
3005                 $link =~ s#%n#$project#g;
3006                 $link =~ s#%f#$git_dir#g;
3007                 $treehead ? $link =~ s#%h#$treehead#g : $link =~ s#%h##g;
3008                 $treebase ? $link =~ s#%b#$treebase#g : $link =~ s#%b##g;
3009                 $arg{$label}{'_href'} = $link;
3010         }
3011
3012         print "<div class=\"page_nav\">\n" .
3013                 (join " | ",
3014                  map { $_ eq $current ?
3015                        $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
3016                  } @navs);
3017         print "<br/>\n$extra<br/>\n" .
3018               "</div>\n";
3019 }
3020
3021 sub format_paging_nav {
3022         my ($action, $hash, $head, $page, $has_next_link) = @_;
3023         my $paging_nav;
3024
3025
3026         if ($hash ne $head || $page) {
3027                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
3028         } else {
3029                 $paging_nav .= "HEAD";
3030         }
3031
3032         if ($page > 0) {
3033                 $paging_nav .= " &sdot; " .
3034                         $cgi->a({-href => href(-replay=>1, page=>$page-1),
3035                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3036         } else {
3037                 $paging_nav .= " &sdot; prev";
3038         }
3039
3040         if ($has_next_link) {
3041                 $paging_nav .= " &sdot; " .
3042                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
3043                                  -accesskey => "n", -title => "Alt-n"}, "next");
3044         } else {
3045                 $paging_nav .= " &sdot; next";
3046         }
3047
3048         return $paging_nav;
3049 }
3050
3051 ## ......................................................................
3052 ## functions printing or outputting HTML: div
3053
3054 sub git_print_header_div {
3055         my ($action, $title, $hash, $hash_base) = @_;
3056         my %args = ();
3057
3058         $args{'action'} = $action;
3059         $args{'hash'} = $hash if $hash;
3060         $args{'hash_base'} = $hash_base if $hash_base;
3061
3062         print "<div class=\"header\">\n" .
3063               $cgi->a({-href => href(%args), -class => "title"},
3064               $title ? $title : $action) .
3065               "\n</div>\n";
3066 }
3067
3068 #sub git_print_authorship (\%) {
3069 sub git_print_authorship {
3070         my $co = shift;
3071
3072         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
3073         print "<div class=\"author_date\">" .
3074               esc_html($co->{'author_name'}) .
3075               " [$ad{'rfc2822'}";
3076         if ($ad{'hour_local'} < 6) {
3077                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3078                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3079         } else {
3080                 printf(" (%02d:%02d %s)",
3081                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3082         }
3083         print "]</div>\n";
3084 }
3085
3086 sub git_print_page_path {
3087         my $name = shift;
3088         my $type = shift;
3089         my $hb = shift;
3090
3091
3092         print "<div class=\"page_path\">";
3093         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
3094                       -title => 'tree root'}, to_utf8("[$project]"));
3095         print " / ";
3096         if (defined $name) {
3097                 my @dirname = split '/', $name;
3098                 my $basename = pop @dirname;
3099                 my $fullname = '';
3100
3101                 foreach my $dir (@dirname) {
3102                         $fullname .= ($fullname ? '/' : '') . $dir;
3103                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
3104                                                      hash_base=>$hb),
3105                                       -title => $fullname}, esc_path($dir));
3106                         print " / ";
3107                 }
3108                 if (defined $type && $type eq 'blob') {
3109                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
3110                                                      hash_base=>$hb),
3111                                       -title => $name}, esc_path($basename));
3112                 } elsif (defined $type && $type eq 'tree') {
3113                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
3114                                                      hash_base=>$hb),
3115                                       -title => $name}, esc_path($basename));
3116                         print " / ";
3117                 } else {
3118                         print esc_path($basename);
3119                 }
3120         }
3121         print "<br/></div>\n";
3122 }
3123
3124 # sub git_print_log (\@;%) {
3125 sub git_print_log ($;%) {
3126         my $log = shift;
3127         my %opts = @_;
3128
3129         if ($opts{'-remove_title'}) {
3130                 # remove title, i.e. first line of log
3131                 shift @$log;
3132         }
3133         # remove leading empty lines
3134         while (defined $log->[0] && $log->[0] eq "") {
3135                 shift @$log;
3136         }
3137
3138         # print log
3139         my $signoff = 0;
3140         my $empty = 0;
3141         foreach my $line (@$log) {
3142                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
3143                         $signoff = 1;
3144                         $empty = 0;
3145                         if (! $opts{'-remove_signoff'}) {
3146                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
3147                                 next;
3148                         } else {
3149                                 # remove signoff lines
3150                                 next;
3151                         }
3152                 } else {
3153                         $signoff = 0;
3154                 }
3155
3156                 # print only one empty line
3157                 # do not print empty line after signoff
3158                 if ($line eq "") {
3159                         next if ($empty || $signoff);
3160                         $empty = 1;
3161                 } else {
3162                         $empty = 0;
3163                 }
3164
3165                 print format_log_line_html($line) . "<br/>\n";
3166         }
3167
3168         if ($opts{'-final_empty_line'}) {
3169                 # end with single empty line
3170                 print "<br/>\n" unless $empty;
3171         }
3172 }
3173
3174 # return link target (what link points to)
3175 sub git_get_link_target {
3176         my $hash = shift;
3177         my $link_target;
3178
3179         # read link
3180         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3181                 or return;
3182         {
3183                 local $/;
3184                 $link_target = <$fd>;
3185         }
3186         close $fd
3187                 or return;
3188
3189         return $link_target;
3190 }
3191
3192 # given link target, and the directory (basedir) the link is in,
3193 # return target of link relative to top directory (top tree);
3194 # return undef if it is not possible (including absolute links).
3195 sub normalize_link_target {
3196         my ($link_target, $basedir, $hash_base) = @_;
3197
3198         # we can normalize symlink target only if $hash_base is provided
3199         return unless $hash_base;
3200
3201         # absolute symlinks (beginning with '/') cannot be normalized
3202         return if (substr($link_target, 0, 1) eq '/');
3203
3204         # normalize link target to path from top (root) tree (dir)
3205         my $path;
3206         if ($basedir) {
3207                 $path = $basedir . '/' . $link_target;
3208         } else {
3209                 # we are in top (root) tree (dir)
3210                 $path = $link_target;
3211         }
3212
3213         # remove //, /./, and /../
3214         my @path_parts;
3215         foreach my $part (split('/', $path)) {
3216                 # discard '.' and ''
3217                 next if (!$part || $part eq '.');
3218                 # handle '..'
3219                 if ($part eq '..') {
3220                         if (@path_parts) {
3221                                 pop @path_parts;
3222                         } else {
3223                                 # link leads outside repository (outside top dir)
3224                                 return;
3225                         }
3226                 } else {
3227                         push @path_parts, $part;
3228                 }
3229         }
3230         $path = join('/', @path_parts);
3231
3232         return $path;
3233 }
3234
3235 # print tree entry (row of git_tree), but without encompassing <tr> element
3236 sub git_print_tree_entry {
3237         my ($t, $basedir, $hash_base, $have_blame) = @_;
3238
3239         my %base_key = ();
3240         $base_key{'hash_base'} = $hash_base if defined $hash_base;
3241
3242         # The format of a table row is: mode list link.  Where mode is
3243         # the mode of the entry, list is the name of the entry, an href,
3244         # and link is the action links of the entry.
3245
3246         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
3247         if ($t->{'type'} eq "blob") {
3248                 print "<td class=\"list\">" .
3249                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
3250                                                file_name=>"$basedir$t->{'name'}", %base_key),
3251                                 -class => "list"}, esc_path($t->{'name'}));
3252                 if (S_ISLNK(oct $t->{'mode'})) {
3253                         my $link_target = git_get_link_target($t->{'hash'});
3254                         if ($link_target) {
3255                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
3256                                 if (defined $norm_target) {
3257                                         print " -> " .
3258                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
3259                                                                      file_name=>$norm_target),
3260                                                        -title => $norm_target}, esc_path($link_target));
3261                                 } else {
3262                                         print " -> " . esc_path($link_target);
3263                                 }
3264                         }
3265                 }
3266                 print "</td>\n";
3267                 print "<td class=\"link\">";
3268                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
3269                                              file_name=>"$basedir$t->{'name'}", %base_key)},
3270                               "blob");
3271                 if ($have_blame) {
3272                         print " | " .
3273                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
3274                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
3275                                       "blame");
3276                 }
3277                 if (defined $hash_base) {
3278                         print " | " .
3279                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3280                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
3281                                       "history");
3282                 }
3283                 print " | " .
3284                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
3285                                                file_name=>"$basedir$t->{'name'}")},
3286                                 "raw");
3287                 print "</td>\n";
3288
3289         } elsif ($t->{'type'} eq "tree") {
3290                 print "<td class=\"list\">";
3291                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3292                                              file_name=>"$basedir$t->{'name'}", %base_key)},
3293                               esc_path($t->{'name'}));
3294                 print "</td>\n";
3295                 print "<td class=\"link\">";
3296                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
3297                                              file_name=>"$basedir$t->{'name'}", %base_key)},
3298                               "tree");
3299                 if (defined $hash_base) {
3300                         print " | " .
3301                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3302                                                      file_name=>"$basedir$t->{'name'}")},
3303                                       "history");
3304                 }
3305                 print "</td>\n";
3306         } else {
3307                 # unknown object: we can only present history for it
3308                 # (this includes 'commit' object, i.e. submodule support)
3309                 print "<td class=\"list\">" .
3310                       esc_path($t->{'name'}) .
3311                       "</td>\n";
3312                 print "<td class=\"link\">";
3313                 if (defined $hash_base) {
3314                         print $cgi->a({-href => href(action=>"history",
3315                                                      hash_base=>$hash_base,
3316                                                      file_name=>"$basedir$t->{'name'}")},
3317                                       "history");
3318                 }
3319                 print "</td>\n";
3320         }
3321 }
3322
3323 ## ......................................................................
3324 ## functions printing large fragments of HTML
3325
3326 # get pre-image filenames for merge (combined) diff
3327 sub fill_from_file_info {
3328         my ($diff, @parents) = @_;
3329
3330         $diff->{'from_file'} = [ ];
3331         $diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
3332         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3333                 if ($diff->{'status'}[$i] eq 'R' ||
3334                     $diff->{'status'}[$i] eq 'C') {
3335                         $diff->{'from_file'}[$i] =
3336                                 git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
3337                 }
3338         }
3339
3340         return $diff;
3341 }
3342
3343 # is current raw difftree line of file deletion
3344 sub is_deleted {
3345         my $diffinfo = shift;
3346
3347         return $diffinfo->{'to_id'} eq ('0' x 40);
3348 }
3349
3350 # does patch correspond to [previous] difftree raw line
3351 # $diffinfo  - hashref of parsed raw diff format
3352 # $patchinfo - hashref of parsed patch diff format
3353 #              (the same keys as in $diffinfo)
3354 sub is_patch_split {
3355         my ($diffinfo, $patchinfo) = @_;
3356
3357         return defined $diffinfo && defined $patchinfo
3358                 && $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
3359 }
3360
3361
3362 sub git_difftree_body {
3363         my ($difftree, $hash, @parents) = @_;
3364         my ($parent) = $parents[0];
3365         my ($have_blame) = gitweb_check_feature('blame');
3366         print "<div class=\"list_head\">\n";
3367         if ($#{$difftree} > 10) {
3368                 print(($#{$difftree} + 1) . " files changed:\n");
3369         }
3370         print "</div>\n";
3371
3372         print "<table class=\"" .
3373               (@parents > 1 ? "combined " : "") .
3374               "diff_tree\">\n";
3375
3376         # header only for combined diff in 'commitdiff' view
3377         my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
3378         if ($has_header) {
3379                 # table header
3380                 print "<thead><tr>\n" .
3381                        "<th></th><th></th>\n"; # filename, patchN link
3382                 for (my $i = 0; $i < @parents; $i++) {
3383                         my $par = $parents[$i];
3384                         print "<th>" .
3385                               $cgi->a({-href => href(action=>"commitdiff",
3386                                                      hash=>$hash, hash_parent=>$par),
3387                                        -title => 'commitdiff to parent number ' .
3388                                                   ($i+1) . ': ' . substr($par,0,7)},
3389                                       $i+1) .
3390                               "&nbsp;</th>\n";
3391                 }
3392                 print "</tr></thead>\n<tbody>\n";
3393         }
3394
3395         my $alternate = 1;
3396         my $patchno = 0;
3397         foreach my $line (@{$difftree}) {
3398                 my $diff = parsed_difftree_line($line);
3399
3400                 if ($alternate) {
3401                         print "<tr class=\"dark\">\n";
3402                 } else {
3403                         print "<tr class=\"light\">\n";
3404                 }
3405                 $alternate ^= 1;
3406
3407                 if (exists $diff->{'nparents'}) { # combined diff
3408
3409                         fill_from_file_info($diff, @parents)
3410                                 unless exists $diff->{'from_file'};
3411
3412                         if (!is_deleted($diff)) {
3413                                 # file exists in the result (child) commit
3414                                 print "<td>" .
3415                                       $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3416                                                              file_name=>$diff->{'to_file'},
3417                                                              hash_base=>$hash),
3418                                               -class => "list"}, esc_path($diff->{'to_file'})) .
3419                                       "</td>\n";
3420                         } else {
3421                                 print "<td>" .
3422                                       esc_path($diff->{'to_file'}) .
3423                                       "</td>\n";
3424                         }
3425
3426                         if ($action eq 'commitdiff') {
3427                                 # link to patch
3428                                 $patchno++;
3429                                 print "<td class=\"link\">" .
3430                                       $cgi->a({-href => "#patch$patchno"}, "patch") .
3431                                       " | " .
3432                                       "</td>\n";
3433                         }
3434
3435                         my $has_history = 0;
3436                         my $not_deleted = 0;
3437                         for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
3438                                 my $hash_parent = $parents[$i];
3439                                 my $from_hash = $diff->{'from_id'}[$i];
3440                                 my $from_path = $diff->{'from_file'}[$i];
3441                                 my $status = $diff->{'status'}[$i];
3442
3443                                 $has_history ||= ($status ne 'A');
3444                                 $not_deleted ||= ($status ne 'D');
3445
3446                                 if ($status eq 'A') {
3447                                         print "<td  class=\"link\" align=\"right\"> | </td>\n";
3448                                 } elsif ($status eq 'D') {
3449                                         print "<td class=\"link\">" .
3450                                               $cgi->a({-href => href(action=>"blob",
3451                                                                      hash_base=>$hash,
3452                                                                      hash=>$from_hash,
3453                                                                      file_name=>$from_path)},
3454                                                       "blob" . ($i+1)) .
3455                                               " | </td>\n";
3456                                 } else {
3457                                         if ($diff->{'to_id'} eq $from_hash) {
3458                                                 print "<td class=\"link nochange\">";
3459                                         } else {
3460                                                 print "<td class=\"link\">";
3461                                         }
3462                                         print $cgi->a({-href => href(action=>"blobdiff",
3463                                                                      hash=>$diff->{'to_id'},
3464                                                                      hash_parent=>$from_hash,
3465                                                                      hash_base=>$hash,
3466                                                                      hash_parent_base=>$hash_parent,
3467                                                                      file_name=>$diff->{'to_file'},
3468                                                                      file_parent=>$from_path)},
3469                                                       "diff" . ($i+1)) .
3470                                               " | </td>\n";
3471                                 }
3472                         }
3473
3474                         print "<td class=\"link\">";
3475                         if ($not_deleted) {
3476                                 print $cgi->a({-href => href(action=>"blob",
3477                                                              hash=>$diff->{'to_id'},
3478                                                              file_name=>$diff->{'to_file'},
3479                                                              hash_base=>$hash)},
3480                                               "blob");
3481                                 print " | " if ($has_history);
3482                         }
3483                         if ($has_history) {
3484                                 print $cgi->a({-href => href(action=>"history",
3485                                                              file_name=>$diff->{'to_file'},
3486                                                              hash_base=>$hash)},
3487                                               "history");
3488                         }
3489                         print "</td>\n";
3490
3491                         print "</tr>\n";
3492                         next; # instead of 'else' clause, to avoid extra indent
3493                 }
3494                 # else ordinary diff
3495
3496                 my ($to_mode_oct, $to_mode_str, $to_file_type);
3497                 my ($from_mode_oct, $from_mode_str, $from_file_type);
3498                 if ($diff->{'to_mode'} ne ('0' x 6)) {
3499                         $to_mode_oct = oct $diff->{'to_mode'};
3500                         if (S_ISREG($to_mode_oct)) { # only for regular file
3501                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
3502                         }
3503                         $to_file_type = file_type($diff->{'to_mode'});
3504                 }
3505                 if ($diff->{'from_mode'} ne ('0' x 6)) {
3506                         $from_mode_oct = oct $diff->{'from_mode'};
3507                         if (S_ISREG($to_mode_oct)) { # only for regular file
3508                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
3509                         }
3510                         $from_file_type = file_type($diff->{'from_mode'});
3511                 }
3512
3513                 if ($diff->{'status'} eq "A") { # created
3514                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
3515                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
3516                         $mode_chng   .= "]</span>";
3517                         print "<td>";
3518                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3519                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3520                                       -class => "list"}, esc_path($diff->{'file'}));
3521                         print "</td>\n";
3522                         print "<td>$mode_chng</td>\n";
3523                         print "<td class=\"link\">";
3524                         if ($action eq 'commitdiff') {
3525                                 # link to patch
3526                                 $patchno++;
3527                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3528                                 print " | ";
3529                         }
3530                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3531                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3532                                       "blob");
3533                         print "</td>\n";
3534
3535                 } elsif ($diff->{'status'} eq "D") { # deleted
3536                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
3537                         print "<td>";
3538                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3539                                                      hash_base=>$parent, file_name=>$diff->{'file'}),
3540                                        -class => "list"}, esc_path($diff->{'file'}));
3541                         print "</td>\n";
3542                         print "<td>$mode_chng</td>\n";
3543                         print "<td class=\"link\">";
3544                         if ($action eq 'commitdiff') {
3545                                 # link to patch
3546                                 $patchno++;
3547                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
3548                                 print " | ";
3549                         }
3550                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
3551                                                      hash_base=>$parent, file_name=>$diff->{'file'})},
3552                                       "blob") . " | ";
3553                         if ($have_blame) {
3554                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
3555                                                              file_name=>$diff->{'file'})},
3556                                               "blame") . " | ";
3557                         }
3558                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
3559                                                      file_name=>$diff->{'file'})},
3560                                       "history");
3561                         print "</td>\n";
3562
3563                 } elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
3564                         my $mode_chnge = "";
3565                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3566                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
3567                                 if ($from_file_type ne $to_file_type) {
3568                                         $mode_chnge .= " from $from_file_type to $to_file_type";
3569                                 }
3570                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
3571                                         if ($from_mode_str && $to_mode_str) {
3572                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
3573                                         } elsif ($to_mode_str) {
3574                                                 $mode_chnge .= " mode: $to_mode_str";
3575                                         }
3576                                 }
3577                                 $mode_chnge .= "]</span>\n";
3578                         }
3579                         print "<td>";
3580                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3581                                                      hash_base=>$hash, file_name=>$diff->{'file'}),
3582                                       -class => "list"}, esc_path($diff->{'file'}));
3583                         print "</td>\n";
3584                         print "<td>$mode_chnge</td>\n";
3585                         print "<td class=\"link\">";
3586                         if ($action eq 'commitdiff') {
3587                                 # link to patch
3588                                 $patchno++;
3589                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3590                                       " | ";
3591                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3592                                 # "commit" view and modified file (not onlu mode changed)
3593                                 print $cgi->a({-href => href(action=>"blobdiff",
3594                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3595                                                              hash_base=>$hash, hash_parent_base=>$parent,
3596                                                              file_name=>$diff->{'file'})},
3597                                               "diff") .
3598                                       " | ";
3599                         }
3600                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3601                                                      hash_base=>$hash, file_name=>$diff->{'file'})},
3602                                        "blob") . " | ";
3603                         if ($have_blame) {
3604                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3605                                                              file_name=>$diff->{'file'})},
3606                                               "blame") . " | ";
3607                         }
3608                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3609                                                      file_name=>$diff->{'file'})},
3610                                       "history");
3611                         print "</td>\n";
3612
3613                 } elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
3614                         my %status_name = ('R' => 'moved', 'C' => 'copied');
3615                         my $nstatus = $status_name{$diff->{'status'}};
3616                         my $mode_chng = "";
3617                         if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
3618                                 # mode also for directories, so we cannot use $to_mode_str
3619                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
3620                         }
3621                         print "<td>" .
3622                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
3623                                                      hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
3624                                       -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
3625                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
3626                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
3627                                                      hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
3628                                       -class => "list"}, esc_path($diff->{'from_file'})) .
3629                               " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
3630                               "<td class=\"link\">";
3631                         if ($action eq 'commitdiff') {
3632                                 # link to patch
3633                                 $patchno++;
3634                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
3635                                       " | ";
3636                         } elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
3637                                 # "commit" view and modified file (not only pure rename or copy)
3638                                 print $cgi->a({-href => href(action=>"blobdiff",
3639                                                              hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
3640                                                              hash_base=>$hash, hash_parent_base=>$parent,
3641                                                              file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
3642                                               "diff") .
3643                                       " | ";
3644                         }
3645                         print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
3646                                                      hash_base=>$parent, file_name=>$diff->{'to_file'})},
3647                                       "blob") . " | ";
3648                         if ($have_blame) {
3649                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
3650                                                              file_name=>$diff->{'to_file'})},
3651                                               "blame") . " | ";
3652                         }
3653                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
3654                                                     file_name=>$diff->{'to_file'})},
3655                                       "history");
3656                         print "</td>\n";
3657
3658                 } # we should not encounter Unmerged (U) or Unknown (X) status
3659                 print "</tr>\n";
3660         }
3661         print "</tbody>" if $has_header;
3662         print "</table>\n";
3663 }
3664
3665 sub git_patchset_body {
3666         my ($fd, $difftree, $hash, @hash_parents) = @_;
3667         my ($hash_parent) = $hash_parents[0];
3668
3669         my $is_combined = (@hash_parents > 1);
3670         my $patch_idx = 0;
3671         my $patch_number = 0;
3672         my $patch_line;
3673         my $diffinfo;
3674         my $to_name;
3675         my (%from, %to);
3676
3677         print "<div class=\"patchset\">\n";
3678
3679         # skip to first patch
3680         while ($patch_line = <$fd>) {
3681                 chomp $patch_line;
3682
3683                 last if ($patch_line =~ m/^diff /);
3684         }
3685
3686  PATCH:
3687         while ($patch_line) {
3688
3689                 # parse "git diff" header line
3690                 if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
3691                         # $1 is from_name, which we do not use
3692                         $to_name = unquote($2);
3693                         $to_name =~ s!^b/!!;
3694                 } elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
3695                         # $1 is 'cc' or 'combined', which we do not use
3696                         $to_name = unquote($2);
3697                 } else {
3698                         $to_name = undef;
3699                 }
3700
3701                 # check if current patch belong to current raw line
3702                 # and parse raw git-diff line if needed
3703                 if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
3704                         # this is continuation of a split patch
3705                         print "<div class=\"patch cont\">\n";
3706                 } else {
3707                         # advance raw git-diff output if needed
3708                         $patch_idx++ if defined $diffinfo;
3709
3710                         # read and prepare patch information
3711                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3712
3713                         # compact combined diff output can have some patches skipped
3714                         # find which patch (using pathname of result) we are at now;
3715                         if ($is_combined) {
3716                                 while ($to_name ne $diffinfo->{'to_file'}) {
3717                                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3718                                               format_diff_cc_simplified($diffinfo, @hash_parents) .
3719                                               "</div>\n";  # class="patch"
3720
3721                                         $patch_idx++;
3722                                         $patch_number++;
3723
3724                                         last if $patch_idx > $#$difftree;
3725                                         $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3726                                 }
3727                         }
3728
3729                         # modifies %from, %to hashes
3730                         parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
3731
3732                         # this is first patch for raw difftree line with $patch_idx index
3733                         # we index @$difftree array from 0, but number patches from 1
3734                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
3735                 }
3736
3737                 # git diff header
3738                 #assert($patch_line =~ m/^diff /) if DEBUG;
3739                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
3740                 $patch_number++;
3741                 # print "git diff" header
3742                 print format_git_diff_header_line($patch_line, $diffinfo,
3743                                                   \%from, \%to);
3744
3745                 # print extended diff header
3746                 print "<div class=\"diff extended_header\">\n";
3747         EXTENDED_HEADER:
3748                 while ($patch_line = <$fd>) {
3749                         chomp $patch_line;
3750
3751                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
3752
3753                         print format_extended_diff_header_line($patch_line, $diffinfo,
3754                                                                \%from, \%to);
3755                 }
3756                 print "</div>\n"; # class="diff extended_header"
3757
3758                 # from-file/to-file diff header
3759                 if (! $patch_line) {
3760                         print "</div>\n"; # class="patch"
3761                         last PATCH;
3762                 }
3763                 next PATCH if ($patch_line =~ m/^diff /);
3764                 #assert($patch_line =~ m/^---/) if DEBUG;
3765
3766                 my $last_patch_line = $patch_line;
3767                 $patch_line = <$fd>;
3768                 chomp $patch_line;
3769                 #assert($patch_line =~ m/^\+\+\+/) if DEBUG;
3770
3771                 print format_diff_from_to_header($last_patch_line, $patch_line,
3772                                                  $diffinfo, \%from, \%to,
3773                                                  @hash_parents);
3774
3775                 # the patch itself
3776         LINE:
3777                 while ($patch_line = <$fd>) {
3778                         chomp $patch_line;
3779
3780                         next PATCH if ($patch_line =~ m/^diff /);
3781
3782                         print format_diff_line($patch_line, \%from, \%to);
3783                 }
3784
3785         } continue {
3786                 print "</div>\n"; # class="patch"
3787         }
3788
3789         # for compact combined (--cc) format, with chunk and patch simpliciaction
3790         # patchset might be empty, but there might be unprocessed raw lines
3791         for (++$patch_idx if $patch_number > 0;
3792              $patch_idx < @$difftree;
3793              ++$patch_idx) {
3794                 # read and prepare patch information
3795                 $diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
3796
3797                 # generate anchor for "patch" links in difftree / whatchanged part
3798                 print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
3799                       format_diff_cc_simplified($diffinfo, @hash_parents) .
3800                       "</div>\n";  # class="patch"
3801
3802                 $patch_number++;
3803         }
3804
3805         if ($patch_number == 0) {
3806                 if (@hash_parents > 1) {
3807                         print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
3808                 } else {
3809                         print "<div class=\"diff nodifferences\">No differences found</div>\n";
3810                 }
3811         }
3812
3813         print "</div>\n"; # class="patchset"
3814 }
3815
3816 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3817
3818 # fills project list info (age, description, owner, forks) for each
3819 # project in the list, removing invalid projects from returned list
3820 # NOTE: modifies $projlist, but does not remove entries from it
3821 sub fill_project_list_info {
3822         my ($projlist, $check_forks) = @_;
3823         my @projects;
3824
3825         my $show_ctags = gitweb_check_feature('ctags');
3826  PROJECT:
3827         foreach my $pr (@$projlist) {
3828                 my (@activity) = git_get_last_activity($pr->{'path'});
3829                 unless (@activity) {
3830                         next PROJECT;
3831                 }
3832                 ($pr->{'age'}, $pr->{'age_string'}) = @activity;
3833                 if (!defined $pr->{'descr'}) {
3834                         my $descr = git_get_project_description($pr->{'path'}) || "";
3835                         $descr = to_utf8($descr);
3836                         $pr->{'descr_long'} = $descr;
3837                         $pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
3838                 }
3839                 if (!defined $pr->{'owner'}) {
3840                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
3841                 }
3842                 if ($check_forks) {
3843                         my $pname = $pr->{'path'};
3844                         if (($pname =~ s/\.git$//) &&
3845                             ($pname !~ /\/$/) &&
3846                             (-d "$projectroot/$pname")) {
3847                                 $pr->{'forks'} = "-d $projectroot/$pname";
3848                         }       else {
3849                                 $pr->{'forks'} = 0;
3850                         }
3851                 }
3852                 $show_ctags and $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
3853                 push @projects, $pr;
3854         }
3855
3856         return @projects;
3857 }
3858
3859 # print 'sort by' <th> element, generating 'sort by $name' replay link
3860 # if that order is not selected
3861 sub print_sort_th {
3862         my ($name, $order, $header) = @_;
3863         $header ||= ucfirst($name);
3864
3865         if ($order eq $name) {
3866                 print "<th>$header</th>\n";
3867         } else {
3868                 print "<th>" .
3869                       $cgi->a({-href => href(-replay=>1, order=>$name),
3870                                -class => "header"}, $header) .
3871                       "</th>\n";
3872         }
3873 }
3874
3875 sub git_project_list_body {
3876         # actually uses global variable $project
3877         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
3878
3879         my ($check_forks) = gitweb_check_feature('forks');
3880         my @projects = fill_project_list_info($projlist, $check_forks);
3881
3882         $order ||= $default_projects_order;
3883         $from = 0 unless defined $from;
3884         $to = $#projects if (!defined $to || $#projects < $to);
3885
3886         my %order_info = (
3887                 project => { key => 'path', type => 'str' },
3888                 descr => { key => 'descr_long', type => 'str' },
3889                 owner => { key => 'owner', type => 'str' },
3890                 age => { key => 'age', type => 'num' }
3891         );
3892         my $oi = $order_info{$order};
3893         if ($oi->{'type'} eq 'str') {
3894                 @projects = sort {$a->{$oi->{'key'}} cmp $b->{$oi->{'key'}}} @projects;
3895         } else {
3896                 @projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @projects;
3897         }
3898
3899         my $show_ctags = gitweb_check_feature('ctags');
3900         if ($show_ctags) {
3901                 my %ctags;
3902                 foreach my $p (@projects) {
3903                         foreach my $ct (keys %{$p->{'ctags'}}) {
3904                                 $ctags{$ct} += $p->{'ctags'}->{$ct};
3905                         }
3906                 }
3907                 my $cloud = git_populate_project_tagcloud(\%ctags);
3908                 print git_show_project_tagcloud($cloud, 64);
3909         }
3910
3911         print "<table class=\"project_list\">\n";
3912         unless ($no_header) {
3913                 print "<tr>\n";
3914                 if ($check_forks) {
3915                         print "<th></th>\n";
3916                 }
3917                 print_sort_th('project', $order, 'Project');
3918                 print_sort_th('descr', $order, 'Description');
3919                 print_sort_th('owner', $order, 'Owner');
3920                 print_sort_th('age', $order, 'Last Change');
3921                 print "<th></th>\n" . # for links
3922                       "</tr>\n";
3923         }
3924         my $alternate = 1;
3925         my $tagfilter = $cgi->param('by_tag');
3926         for (my $i = $from; $i <= $to; $i++) {
3927                 my $pr = $projects[$i];
3928
3929                 next if $tagfilter and $show_ctags and not grep { lc $_ eq lc $tagfilter } keys %{$pr->{'ctags'}};
3930                 next if $searchtext and not $pr->{'path'} =~ /$searchtext/
3931                         and not $pr->{'descr_long'} =~ /$searchtext/;
3932                 # Weed out forks or non-matching entries of search
3933                 if ($check_forks) {
3934                         my $forkbase = $project; $forkbase ||= ''; $forkbase =~ s#\.git$#/#;
3935                         $forkbase="^$forkbase" if $forkbase;
3936                         next if not $searchtext and not $tagfilter and $show_ctags
3937                                 and $pr->{'path'} =~ m#$forkbase.*/.*#; # regexp-safe
3938                 }
3939
3940                 if ($alternate) {
3941                         print "<tr class=\"dark\">\n";
3942                 } else {
3943                         print "<tr class=\"light\">\n";
3944                 }
3945                 $alternate ^= 1;
3946                 if ($check_forks) {
3947                         print "<td>";
3948                         if ($pr->{'forks'}) {
3949                                 print "<!-- $pr->{'forks'} -->\n";
3950                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
3951                         }
3952                         print "</td>\n";
3953                 }
3954                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3955                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
3956                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
3957                                         -class => "list", -title => $pr->{'descr_long'}},
3958                                         esc_html($pr->{'descr'})) . "</td>\n" .
3959                       "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
3960                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
3961                       (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
3962                       "<td class=\"link\">" .
3963                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
3964                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
3965                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
3966                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
3967                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
3968                       "</td>\n" .
3969                       "</tr>\n";
3970         }
3971         if (defined $extra) {
3972                 print "<tr>\n";
3973                 if ($check_forks) {
3974                         print "<td></td>\n";
3975                 }
3976                 print "<td colspan=\"5\">$extra</td>\n" .
3977                       "</tr>\n";
3978         }
3979         print "</table>\n";
3980 }
3981
3982 sub git_shortlog_body {
3983         # uses global variable $project
3984         my ($commitlist, $from, $to, $refs, $extra) = @_;
3985
3986         $from = 0 unless defined $from;
3987         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
3988
3989         print "<table class=\"shortlog\">\n";
3990         my $alternate = 1;
3991         for (my $i = $from; $i <= $to; $i++) {
3992                 my %co = %{$commitlist->[$i]};
3993                 my $commit = $co{'id'};
3994                 my $ref = format_ref_marker($refs, $commit);
3995                 if ($alternate) {
3996                         print "<tr class=\"dark\">\n";
3997                 } else {
3998                         print "<tr class=\"light\">\n";
3999                 }
4000                 $alternate ^= 1;
4001                 my $author = chop_and_escape_str($co{'author_name'}, 10);
4002                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
4003                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4004                       "<td><i>" . $author . "</i></td>\n" .
4005                       "<td>";
4006                 print format_subject_html($co{'title'}, $co{'title_short'},
4007                                           href(action=>"commit", hash=>$commit), $ref);
4008                 print "</td>\n" .
4009                       "<td class=\"link\">" .
4010                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
4011                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
4012                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
4013                 my $snapshot_links = format_snapshot_links($commit);
4014                 if (defined $snapshot_links) {
4015                         print " | " . $snapshot_links;
4016                 }
4017                 print "</td>\n" .
4018                       "</tr>\n";
4019         }
4020         if (defined $extra) {
4021                 print "<tr>\n" .
4022                       "<td colspan=\"4\">$extra</td>\n" .
4023                       "</tr>\n";
4024         }
4025         print "</table>\n";
4026 }
4027
4028 sub git_history_body {
4029         # Warning: assumes constant type (blob or tree) during history
4030         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
4031
4032         $from = 0 unless defined $from;
4033         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
4034
4035         print "<table class=\"history\">\n";
4036         my $alternate = 1;
4037         for (my $i = $from; $i <= $to; $i++) {
4038                 my %co = %{$commitlist->[$i]};
4039                 if (!%co) {
4040                         next;
4041                 }
4042                 my $commit = $co{'id'};
4043
4044                 my $ref = format_ref_marker($refs, $commit);
4045
4046                 if ($alternate) {
4047                         print "<tr class=\"dark\">\n";
4048                 } else {
4049                         print "<tr class=\"light\">\n";
4050                 }
4051                 $alternate ^= 1;
4052         # shortlog uses      chop_str($co{'author_name'}, 10)
4053                 my $author = chop_and_escape_str($co{'author_name'}, 15, 3);
4054                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4055                       "<td><i>" . $author . "</i></td>\n" .
4056                       "<td>";
4057                 # originally git_history used chop_str($co{'title'}, 50)
4058                 print format_subject_html($co{'title'}, $co{'title_short'},
4059                                           href(action=>"commit", hash=>$commit), $ref);
4060                 print "</td>\n" .
4061                       "<td class=\"link\">" .
4062                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
4063                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
4064
4065                 if ($ftype eq 'blob') {
4066                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
4067                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
4068                         if (defined $blob_current && defined $blob_parent &&
4069                                         $blob_current ne $blob_parent) {
4070                                 print " | " .
4071                                         $cgi->a({-href => href(action=>"blobdiff",
4072                                                                hash=>$blob_current, hash_parent=>$blob_parent,
4073                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
4074                                                                file_name=>$file_name)},
4075                                                 "diff to current");
4076                         }
4077                 }
4078                 print "</td>\n" .
4079                       "</tr>\n";
4080         }
4081         if (defined $extra) {
4082                 print "<tr>\n" .
4083                       "<td colspan=\"4\">$extra</td>\n" .
4084                       "</tr>\n";
4085         }
4086         print "</table>\n";
4087 }
4088
4089 sub git_tags_body {
4090         # uses global variable $project
4091         my ($taglist, $from, $to, $extra) = @_;
4092         $from = 0 unless defined $from;
4093         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
4094
4095         print "<table class=\"tags\">\n";
4096         my $alternate = 1;
4097         for (my $i = $from; $i <= $to; $i++) {
4098                 my $entry = $taglist->[$i];
4099                 my %tag = %$entry;
4100                 my $comment = $tag{'subject'};
4101                 my $comment_short;
4102                 if (defined $comment) {
4103                         $comment_short = chop_str($comment, 30, 5);
4104                 }
4105                 if ($alternate) {
4106                         print "<tr class=\"dark\">\n";
4107                 } else {
4108                         print "<tr class=\"light\">\n";
4109                 }
4110                 $alternate ^= 1;
4111                 if (defined $tag{'age'}) {
4112                         print "<td><i>$tag{'age'}</i></td>\n";
4113                 } else {
4114                         print "<td></td>\n";
4115                 }
4116                 print "<td>" .
4117                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
4118                                -class => "list name"}, esc_html($tag{'name'})) .
4119                       "</td>\n" .
4120                       "<td>";
4121                 if (defined $comment) {
4122                         print format_subject_html($comment, $comment_short,
4123                                                   href(action=>"tag", hash=>$tag{'id'}));
4124                 }
4125                 print "</td>\n" .
4126                       "<td class=\"selflink\">";
4127                 if ($tag{'type'} eq "tag") {
4128                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
4129                 } else {
4130                         print "&nbsp;";
4131                 }
4132                 print "</td>\n" .
4133                       "<td class=\"link\">" . " | " .
4134                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
4135                 if ($tag{'reftype'} eq "commit") {
4136                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
4137                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
4138                 } elsif ($tag{'reftype'} eq "blob") {
4139                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
4140                 }
4141                 print "</td>\n" .
4142                       "</tr>";
4143         }
4144         if (defined $extra) {
4145                 print "<tr>\n" .
4146                       "<td colspan=\"5\">$extra</td>\n" .
4147                       "</tr>\n";
4148         }
4149         print "</table>\n";
4150 }
4151
4152 sub git_heads_body {
4153         # uses global variable $project
4154         my ($headlist, $head, $from, $to, $extra) = @_;
4155         $from = 0 unless defined $from;
4156         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
4157
4158         print "<table class=\"heads\">\n";
4159         my $alternate = 1;
4160         for (my $i = $from; $i <= $to; $i++) {
4161                 my $entry = $headlist->[$i];
4162                 my %ref = %$entry;
4163                 my $curr = $ref{'id'} eq $head;
4164                 if ($alternate) {
4165                         print "<tr class=\"dark\">\n";
4166                 } else {
4167                         print "<tr class=\"light\">\n";
4168                 }
4169                 $alternate ^= 1;
4170                 print "<td><i>$ref{'age'}</i></td>\n" .
4171                       ($curr ? "<td class=\"current_head\">" : "<td>") .
4172                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
4173                                -class => "list name"},esc_html($ref{'name'})) .
4174                       "</td>\n" .
4175                       "<td class=\"link\">" .
4176                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
4177                       $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
4178                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
4179                       "</td>\n" .
4180                       "</tr>";
4181         }
4182         if (defined $extra) {
4183                 print "<tr>\n" .
4184                       "<td colspan=\"3\">$extra</td>\n" .
4185                       "</tr>\n";
4186         }
4187         print "</table>\n";
4188 }
4189
4190 sub git_search_grep_body {
4191         my ($commitlist, $from, $to, $extra) = @_;
4192         $from = 0 unless defined $from;
4193         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
4194
4195         print "<table class=\"commit_search\">\n";
4196         my $alternate = 1;
4197         for (my $i = $from; $i <= $to; $i++) {
4198                 my %co = %{$commitlist->[$i]};
4199                 if (!%co) {
4200                         next;
4201                 }
4202                 my $commit = $co{'id'};
4203                 if ($alternate) {
4204                         print "<tr class=\"dark\">\n";
4205                 } else {
4206                         print "<tr class=\"light\">\n";
4207                 }
4208                 $alternate ^= 1;
4209                 my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
4210                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4211                       "<td><i>" . $author . "</i></td>\n" .
4212                       "<td>" .
4213                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4214                                -class => "list subject"},
4215                               chop_and_escape_str($co{'title'}, 50) . "<br/>");
4216                 my $comment = $co{'comment'};
4217                 foreach my $line (@$comment) {
4218                         if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
4219                                 my ($lead, $match, $trail) = ($1, $2, $3);
4220                                 $match = chop_str($match, 70, 5, 'center');
4221                                 my $contextlen = int((80 - length($match))/2);
4222                                 $contextlen = 30 if ($contextlen > 30);
4223                                 $lead  = chop_str($lead,  $contextlen, 10, 'left');
4224                                 $trail = chop_str($trail, $contextlen, 10, 'right');
4225
4226                                 $lead  = esc_html($lead);
4227                                 $match = esc_html($match);
4228                                 $trail = esc_html($trail);
4229
4230                                 print "$lead<span class=\"match\">$match</span>$trail<br />";
4231                         }
4232                 }
4233                 print "</td>\n" .
4234                       "<td class=\"link\">" .
4235                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4236                       " | " .
4237                       $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
4238                       " | " .
4239                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4240                 print "</td>\n" .
4241                       "</tr>\n";
4242         }
4243         if (defined $extra) {
4244                 print "<tr>\n" .
4245                       "<td colspan=\"3\">$extra</td>\n" .
4246                       "</tr>\n";
4247         }
4248         print "</table>\n";
4249 }
4250
4251 ## ======================================================================
4252 ## ======================================================================
4253 ## actions
4254
4255 sub git_project_list {
4256         my $order = $input_params{'order'};
4257         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
4258                 die_error(400, "Unknown order parameter");
4259         }
4260
4261         my @list = git_get_projects_list();
4262         if (!@list) {
4263                 die_error(404, "No projects found");
4264         }
4265
4266         git_header_html();
4267         if (-f $home_text) {
4268                 print "<div class=\"index_include\">\n";
4269                 open (my $fd, $home_text);
4270                 print <$fd>;
4271                 close $fd;
4272                 print "</div>\n";
4273         }
4274         print $cgi->startform(-method => "get") .
4275               "<p class=\"projsearch\">Search:\n" .
4276               $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
4277               "</p>" .
4278               $cgi->end_form() . "\n";
4279         git_project_list_body(\@list, $order);
4280         git_footer_html();
4281 }
4282
4283 sub git_forks {
4284         my $order = $input_params{'order'};
4285         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
4286                 die_error(400, "Unknown order parameter");
4287         }
4288
4289         my @list = git_get_projects_list($project);
4290         if (!@list) {
4291                 die_error(404, "No forks found");
4292         }
4293
4294         git_header_html();
4295         git_print_page_nav('','');
4296         git_print_header_div('summary', "$project forks");
4297         git_project_list_body(\@list, $order);
4298         git_footer_html();
4299 }
4300
4301 sub git_project_index {
4302         my @projects = git_get_projects_list($project);
4303
4304         print $cgi->header(
4305                 -type => 'text/plain',
4306                 -charset => 'utf-8',
4307                 -content_disposition => 'inline; filename="index.aux"');
4308
4309         foreach my $pr (@projects) {
4310                 if (!exists $pr->{'owner'}) {
4311                         $pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
4312                 }
4313
4314                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
4315                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
4316                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4317                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
4318                 $path  =~ s/ /\+/g;
4319                 $owner =~ s/ /\+/g;
4320
4321                 print "$path $owner\n";
4322         }
4323 }
4324
4325 sub git_summary {
4326         my $descr = git_get_project_description($project) || "none";
4327         my %co = parse_commit("HEAD");
4328         my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
4329         my $head = $co{'id'};
4330
4331         my $owner = git_get_project_owner($project);
4332
4333         my $refs = git_get_references();
4334         # These get_*_list functions return one more to allow us to see if
4335         # there are more ...
4336         my @taglist  = git_get_tags_list(16);
4337         my @headlist = git_get_heads_list(16);
4338         my @forklist;
4339         my ($check_forks) = gitweb_check_feature('forks');
4340
4341         if ($check_forks) {
4342                 @forklist = git_get_projects_list($project);
4343         }
4344
4345         git_header_html();
4346         git_print_page_nav('summary','', $head);
4347
4348         print "<div class=\"title\">&nbsp;</div>\n";
4349         print "<table class=\"projects_list\">\n" .
4350               "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
4351               "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
4352         if (defined $cd{'rfc2822'}) {
4353                 print "<tr id=\"metadata_lchange\"><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
4354         }
4355
4356         # use per project git URL list in $projectroot/$project/cloneurl
4357         # or make project git URL from git base URL and project name
4358         my $url_tag = "URL";
4359         my @url_list = git_get_project_url_list($project);
4360         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
4361         foreach my $git_url (@url_list) {
4362                 next unless $git_url;
4363                 print "<tr class=\"metadata_url\"><td>$url_tag</td><td>$git_url</td></tr>\n";
4364                 $url_tag = "";
4365         }
4366
4367         # Tag cloud
4368         my $show_ctags = (gitweb_check_feature('ctags'))[0];
4369         if ($show_ctags) {
4370                 my $ctags = git_get_project_ctags($project);
4371                 my $cloud = git_populate_project_tagcloud($ctags);
4372                 print "<tr id=\"metadata_ctags\"><td>Content tags:<br />";
4373                 print "</td>\n<td>" unless %$ctags;
4374                 print "<form action=\"$show_ctags\" method=\"post\"><input type=\"hidden\" name=\"p\" value=\"$project\" />Add: <input type=\"text\" name=\"t\" size=\"8\" /></form>";
4375                 print "</td>\n<td>" if %$ctags;
4376                 print git_show_project_tagcloud($cloud, 48);
4377                 print "</td></tr>";
4378         }
4379
4380         print "</table>\n";
4381
4382         if (-s "$projectroot/$project/README.html") {
4383                 if (open my $fd, "$projectroot/$project/README.html") {
4384                         print "<div class=\"title\">readme</div>\n" .
4385                               "<div class=\"readme\">\n";
4386                         print $_ while (<$fd>);
4387                         print "\n</div>\n"; # class="readme"
4388                         close $fd;
4389                 }
4390         }
4391
4392         # we need to request one more than 16 (0..15) to check if
4393         # those 16 are all
4394         my @commitlist = $head ? parse_commits($head, 17) : ();
4395         if (@commitlist) {
4396                 git_print_header_div('shortlog');
4397                 git_shortlog_body(\@commitlist, 0, 15, $refs,
4398                                   $#commitlist <=  15 ? undef :
4399                                   $cgi->a({-href => href(action=>"shortlog")}, "..."));
4400         }
4401
4402         if (@taglist) {
4403                 git_print_header_div('tags');
4404                 git_tags_body(\@taglist, 0, 15,
4405                               $#taglist <=  15 ? undef :
4406                               $cgi->a({-href => href(action=>"tags")}, "..."));
4407         }
4408
4409         if (@headlist) {
4410                 git_print_header_div('heads');
4411                 git_heads_body(\@headlist, $head, 0, 15,
4412                                $#headlist <= 15 ? undef :
4413                                $cgi->a({-href => href(action=>"heads")}, "..."));
4414         }
4415
4416         if (@forklist) {
4417                 git_print_header_div('forks');
4418                 git_project_list_body(\@forklist, 'age', 0, 15,
4419                                       $#forklist <= 15 ? undef :
4420                                       $cgi->a({-href => href(action=>"forks")}, "..."),
4421                                       'no_header');
4422         }
4423
4424         git_footer_html();
4425 }
4426
4427 sub git_tag {
4428         my $head = git_get_head_hash($project);
4429         git_header_html();
4430         git_print_page_nav('','', $head,undef,$head);
4431         my %tag = parse_tag($hash);
4432
4433         if (! %tag) {
4434                 die_error(404, "Unknown tag object");
4435         }
4436
4437         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
4438         print "<div class=\"title_text\">\n" .
4439               "<table class=\"object_header\">\n" .
4440               "<tr>\n" .
4441               "<td>object</td>\n" .
4442               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4443                                $tag{'object'}) . "</td>\n" .
4444               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
4445                                               $tag{'type'}) . "</td>\n" .
4446               "</tr>\n";
4447         if (defined($tag{'author'})) {
4448                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
4449                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
4450                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
4451                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
4452                         "</td></tr>\n";
4453         }
4454         print "</table>\n\n" .
4455               "</div>\n";
4456         print "<div class=\"page_body\">";
4457         my $comment = $tag{'comment'};
4458         foreach my $line (@$comment) {
4459                 chomp $line;
4460                 print esc_html($line, -nbsp=>1) . "<br/>\n";
4461         }
4462         print "</div>\n";
4463         git_footer_html();
4464 }
4465
4466 sub git_blame {
4467         my $fd;
4468         my $ftype;
4469
4470         gitweb_check_feature('blame')
4471             or die_error(403, "Blame view not allowed");
4472
4473         die_error(400, "No file name given") unless $file_name;
4474         $hash_base ||= git_get_head_hash($project);
4475         die_error(404, "Couldn't find base commit") unless ($hash_base);
4476         my %co = parse_commit($hash_base)
4477                 or die_error(404, "Commit not found");
4478         if (!defined $hash) {
4479                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
4480                         or die_error(404, "Error looking up file");
4481         }
4482         $ftype = git_get_type($hash);
4483         if ($ftype !~ "blob") {
4484                 die_error(400, "Object is not a blob");
4485         }
4486         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
4487               $file_name, $hash_base)
4488                 or die_error(500, "Open git-blame failed");
4489         git_header_html();
4490         my $formats_nav =
4491                 $cgi->a({-href => href(action=>"blob", -replay=>1)},
4492                         "blob") .
4493                 " | " .
4494                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4495                         "history") .
4496                 " | " .
4497                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
4498                         "HEAD");
4499         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4500         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4501         git_print_page_path($file_name, $ftype, $hash_base);
4502         my @rev_color = (qw(light2 dark2));
4503         my $num_colors = scalar(@rev_color);
4504         my $current_color = 0;
4505         my $last_rev;
4506         print <<HTML;
4507 <div class="page_body">
4508 <table class="blame">
4509 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
4510 HTML
4511         my %metainfo = ();
4512         while (1) {
4513                 $_ = <$fd>;
4514                 last unless defined $_;
4515                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
4516                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
4517                 if (!exists $metainfo{$full_rev}) {
4518                         $metainfo{$full_rev} = {};
4519                 }
4520                 my $meta = $metainfo{$full_rev};
4521                 while (<$fd>) {
4522                         last if (s/^\t//);
4523                         if (/^(\S+) (.*)$/) {
4524                                 $meta->{$1} = $2;
4525                         }
4526                 }
4527                 my $data = $_;
4528                 chomp $data;
4529                 my $rev = substr($full_rev, 0, 8);
4530                 my $author = $meta->{'author'};
4531                 my %date = parse_date($meta->{'author-time'},
4532                                       $meta->{'author-tz'});
4533                 my $date = $date{'iso-tz'};
4534                 if ($group_size) {
4535                         $current_color = ++$current_color % $num_colors;
4536                 }
4537                 print "<tr class=\"$rev_color[$current_color]\">\n";
4538                 if ($group_size) {
4539                         print "<td class=\"sha1\"";
4540                         print " title=\"". esc_html($author) . ", $date\"";
4541                         print " rowspan=\"$group_size\"" if ($group_size > 1);
4542                         print ">";
4543                         print $cgi->a({-href => href(action=>"commit",
4544                                                      hash=>$full_rev,
4545                                                      file_name=>$file_name)},
4546                                       esc_html($rev));
4547                         print "</td>\n";
4548                 }
4549                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
4550                         or die_error(500, "Open git-rev-parse failed");
4551                 my $parent_commit = <$dd>;
4552                 close $dd;
4553                 chomp($parent_commit);
4554                 my $blamed = href(action => 'blame',
4555                                   file_name => $meta->{'filename'},
4556                                   hash_base => $parent_commit);
4557                 print "<td class=\"linenr\">";
4558                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
4559                                 -id => "l$lineno",
4560                                 -class => "linenr" },
4561                               esc_html($lineno));
4562                 print "</td>";
4563                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
4564                 print "</tr>\n";
4565         }
4566         print "</table>\n";
4567         print "</div>";
4568         close $fd
4569                 or print "Reading blob failed\n";
4570         git_footer_html();
4571 }
4572
4573 sub git_tags {
4574         my $head = git_get_head_hash($project);
4575         git_header_html();
4576         git_print_page_nav('','', $head,undef,$head);
4577         git_print_header_div('summary', $project);
4578
4579         my @tagslist = git_get_tags_list();
4580         if (@tagslist) {
4581                 git_tags_body(\@tagslist);
4582         }
4583         git_footer_html();
4584 }
4585
4586 sub git_heads {
4587         my $head = git_get_head_hash($project);
4588         git_header_html();
4589         git_print_page_nav('','', $head,undef,$head);
4590         git_print_header_div('summary', $project);
4591
4592         my @headslist = git_get_heads_list();
4593         if (@headslist) {
4594                 git_heads_body(\@headslist, $head);
4595         }
4596         git_footer_html();
4597 }
4598
4599 sub git_blob_plain {
4600         my $type = shift;
4601         my $expires;
4602
4603         if (!defined $hash) {
4604                 if (defined $file_name) {
4605                         my $base = $hash_base || git_get_head_hash($project);
4606                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4607                                 or die_error(404, "Cannot find file");
4608                 } else {
4609                         die_error(400, "No file name defined");
4610                 }
4611         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4612                 # blobs defined by non-textual hash id's can be cached
4613                 $expires = "+1d";
4614         }
4615
4616         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4617                 or die_error(500, "Open git-cat-file blob '$hash' failed");
4618
4619         # content-type (can include charset)
4620         $type = blob_contenttype($fd, $file_name, $type);
4621
4622         # "save as" filename, even when no $file_name is given
4623         my $save_as = "$hash";
4624         if (defined $file_name) {
4625                 $save_as = $file_name;
4626         } elsif ($type =~ m/^text\//) {
4627                 $save_as .= '.txt';
4628         }
4629
4630         print $cgi->header(
4631                 -type => $type,
4632                 -expires => $expires,
4633                 -content_disposition => 'inline; filename="' . $save_as . '"');
4634         undef $/;
4635         binmode STDOUT, ':raw';
4636         print <$fd>;
4637         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4638         $/ = "\n";
4639         close $fd;
4640 }
4641
4642 sub git_blob {
4643         my $expires;
4644
4645         if (!defined $hash) {
4646                 if (defined $file_name) {
4647                         my $base = $hash_base || git_get_head_hash($project);
4648                         $hash = git_get_hash_by_path($base, $file_name, "blob")
4649                                 or die_error(404, "Cannot find file");
4650                 } else {
4651                         die_error(400, "No file name defined");
4652                 }
4653         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4654                 # blobs defined by non-textual hash id's can be cached
4655                 $expires = "+1d";
4656         }
4657
4658         my ($have_blame) = gitweb_check_feature('blame');
4659         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
4660                 or die_error(500, "Couldn't cat $file_name, $hash");
4661         my $mimetype = blob_mimetype($fd, $file_name);
4662         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
4663                 close $fd;
4664                 return git_blob_plain($mimetype);
4665         }
4666         # we can have blame only for text/* mimetype
4667         $have_blame &&= ($mimetype =~ m!^text/!);
4668
4669         git_header_html(undef, $expires);
4670         my $formats_nav = '';
4671         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4672                 if (defined $file_name) {
4673                         if ($have_blame) {
4674                                 $formats_nav .=
4675                                         $cgi->a({-href => href(action=>"blame", -replay=>1)},
4676                                                 "blame") .
4677                                         " | ";
4678                         }
4679                         $formats_nav .=
4680                                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4681                                         "history") .
4682                                 " | " .
4683                                 $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4684                                         "raw") .
4685                                 " | " .
4686                                 $cgi->a({-href => href(action=>"blob",
4687                                                        hash_base=>"HEAD", file_name=>$file_name)},
4688                                         "HEAD");
4689                 } else {
4690                         $formats_nav .=
4691                                 $cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
4692                                         "raw");
4693                 }
4694                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4695                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4696         } else {
4697                 print "<div class=\"page_nav\">\n" .
4698                       "<br/><br/></div>\n" .
4699                       "<div class=\"title\">$hash</div>\n";
4700         }
4701         git_print_page_path($file_name, "blob", $hash_base);
4702         print "<div class=\"page_body\">\n";
4703         if ($mimetype =~ m!^image/!) {
4704                 print qq!<img type="$mimetype"!;
4705                 if ($file_name) {
4706                         print qq! alt="$file_name" title="$file_name"!;
4707                 }
4708                 print qq! src="! .
4709                       href(action=>"blob_plain", hash=>$hash,
4710                            hash_base=>$hash_base, file_name=>$file_name) .
4711                       qq!" />\n!;
4712         } else {
4713                 my $nr;
4714                 while (my $line = <$fd>) {
4715                         chomp $line;
4716                         $nr++;
4717                         $line = untabify($line);
4718                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
4719                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
4720                 }
4721         }
4722         close $fd
4723                 or print "Reading blob failed.\n";
4724         print "</div>";
4725         git_footer_html();
4726 }
4727
4728 sub git_tree {
4729         if (!defined $hash_base) {
4730                 $hash_base = "HEAD";
4731         }
4732         if (!defined $hash) {
4733                 if (defined $file_name) {
4734                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
4735                 } else {
4736                         $hash = $hash_base;
4737                 }
4738         }
4739         die_error(404, "No such tree") unless defined($hash);
4740         $/ = "\0";
4741         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
4742                 or die_error(500, "Open git-ls-tree failed");
4743         my @entries = map { chomp; $_ } <$fd>;
4744         close $fd or die_error(404, "Reading tree failed");
4745         $/ = "\n";
4746
4747         my $refs = git_get_references();
4748         my $ref = format_ref_marker($refs, $hash_base);
4749         git_header_html();
4750         my $basedir = '';
4751         my ($have_blame) = gitweb_check_feature('blame');
4752         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4753                 my @views_nav = ();
4754                 if (defined $file_name) {
4755                         push @views_nav,
4756                                 $cgi->a({-href => href(action=>"history", -replay=>1)},
4757                                         "history"),
4758                                 $cgi->a({-href => href(action=>"tree",
4759                                                        hash_base=>"HEAD", file_name=>$file_name)},
4760                                         "HEAD"),
4761                 }
4762                 my $snapshot_links = format_snapshot_links($hash);
4763                 if (defined $snapshot_links) {
4764                         # FIXME: Should be available when we have no hash base as well.
4765                         push @views_nav, $snapshot_links;
4766                 }
4767                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
4768                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
4769         } else {
4770                 undef $hash_base;
4771                 print "<div class=\"page_nav\">\n";
4772                 print "<br/><br/></div>\n";
4773                 print "<div class=\"title\">$hash</div>\n";
4774         }
4775         if (defined $file_name) {
4776                 $basedir = $file_name;
4777                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
4778                         $basedir .= '/';
4779                 }
4780                 git_print_page_path($file_name, 'tree', $hash_base);
4781         }
4782         print "<div class=\"page_body\">\n";
4783         print "<table class=\"tree\">\n";
4784         my $alternate = 1;
4785         # '..' (top directory) link if possible
4786         if (defined $hash_base &&
4787             defined $file_name && $file_name =~ m![^/]+$!) {
4788                 if ($alternate) {
4789                         print "<tr class=\"dark\">\n";
4790                 } else {
4791                         print "<tr class=\"light\">\n";
4792                 }
4793                 $alternate ^= 1;
4794
4795                 my $up = $file_name;
4796                 $up =~ s!/?[^/]+$!!;
4797                 undef $up unless $up;
4798                 # based on git_print_tree_entry
4799                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
4800                 print '<td class="list">';
4801                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
4802                                              file_name=>$up)},
4803                               "..");
4804                 print "</td>\n";
4805                 print "<td class=\"link\"></td>\n";
4806
4807                 print "</tr>\n";
4808         }
4809         foreach my $line (@entries) {
4810                 my %t = parse_ls_tree_line($line, -z => 1);
4811
4812                 if ($alternate) {
4813                         print "<tr class=\"dark\">\n";
4814                 } else {
4815                         print "<tr class=\"light\">\n";
4816                 }
4817                 $alternate ^= 1;
4818
4819                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
4820
4821                 print "</tr>\n";
4822         }
4823         print "</table>\n" .
4824               "</div>";
4825         git_footer_html();
4826 }
4827
4828 sub git_snapshot {
4829         my @supported_fmts = gitweb_check_feature('snapshot');
4830         @supported_fmts = filter_snapshot_fmts(@supported_fmts);
4831
4832         my $format = $input_params{'snapshot_format'};
4833         if (!@supported_fmts) {
4834                 die_error(403, "Snapshots not allowed");
4835         }
4836         # default to first supported snapshot format
4837         $format ||= $supported_fmts[0];
4838         if ($format !~ m/^[a-z0-9]+$/) {
4839                 die_error(400, "Invalid snapshot format parameter");
4840         } elsif (!exists($known_snapshot_formats{$format})) {
4841                 die_error(400, "Unknown snapshot format");
4842         } elsif (!grep($_ eq $format, @supported_fmts)) {
4843                 die_error(403, "Unsupported snapshot format");
4844         }
4845
4846         if (!defined $hash) {
4847                 $hash = git_get_head_hash($project);
4848         }
4849
4850         my $name = $project;
4851         $name =~ s,([^/])/*\.git$,$1,;
4852         $name = basename($name);
4853         my $filename = to_utf8($name);
4854         $name =~ s/\047/\047\\\047\047/g;
4855         my $cmd;
4856         $filename .= "-$hash$known_snapshot_formats{$format}{'suffix'}";
4857         $cmd = quote_command(
4858                 git_cmd(), 'archive',
4859                 "--format=$known_snapshot_formats{$format}{'format'}",
4860                 "--prefix=$name/", $hash);
4861         if (exists $known_snapshot_formats{$format}{'compressor'}) {
4862                 $cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
4863         }
4864
4865         print $cgi->header(
4866                 -type => $known_snapshot_formats{$format}{'type'},
4867                 -content_disposition => 'inline; filename="' . "$filename" . '"',
4868                 -status => '200 OK');
4869
4870         open my $fd, "-|", $cmd
4871                 or die_error(500, "Execute git-archive failed");
4872         binmode STDOUT, ':raw';
4873         print <$fd>;
4874         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
4875         close $fd;
4876 }
4877
4878 sub git_log {
4879         my $head = git_get_head_hash($project);
4880         if (!defined $hash) {
4881                 $hash = $head;
4882         }
4883         if (!defined $page) {
4884                 $page = 0;
4885         }
4886         my $refs = git_get_references();
4887
4888         my @commitlist = parse_commits($hash, 101, (100 * $page));
4889
4890         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#commitlist >= 100);
4891
4892         git_header_html();
4893         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
4894
4895         if (!@commitlist) {
4896                 my %co = parse_commit($hash);
4897
4898                 git_print_header_div('summary', $project);
4899                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
4900         }
4901         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
4902         for (my $i = 0; $i <= $to; $i++) {
4903                 my %co = %{$commitlist[$i]};
4904                 next if !%co;
4905                 my $commit = $co{'id'};
4906                 my $ref = format_ref_marker($refs, $commit);
4907                 my %ad = parse_date($co{'author_epoch'});
4908                 git_print_header_div('commit',
4909                                "<span class=\"age\">$co{'age_string'}</span>" .
4910                                esc_html($co{'title'}) . $ref,
4911                                $commit);
4912                 print "<div class=\"title_text\">\n" .
4913                       "<div class=\"log_link\">\n" .
4914                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
4915                       " | " .
4916                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
4917                       " | " .
4918                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
4919                       "<br/>\n" .
4920                       "</div>\n" .
4921                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
4922                       "</div>\n";
4923
4924                 print "<div class=\"log_body\">\n";
4925                 git_print_log($co{'comment'}, -final_empty_line=> 1);
4926                 print "</div>\n";
4927         }
4928         if ($#commitlist >= 100) {
4929                 print "<div class=\"page_nav\">\n";
4930                 print $cgi->a({-href => href(-replay=>1, page=>$page+1),
4931                                -accesskey => "n", -title => "Alt-n"}, "next");
4932                 print "</div>\n";
4933         }
4934         git_footer_html();
4935 }
4936
4937 sub git_commit {
4938         $hash ||= $hash_base || "HEAD";
4939         my %co = parse_commit($hash)
4940             or die_error(404, "Unknown commit object");
4941         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4942         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
4943
4944         my $parent  = $co{'parent'};
4945         my $parents = $co{'parents'}; # listref
4946
4947         # we need to prepare $formats_nav before any parameter munging
4948         my $formats_nav;
4949         if (!defined $parent) {
4950                 # --root commitdiff
4951                 $formats_nav .= '(initial)';
4952         } elsif (@$parents == 1) {
4953                 # single parent commit
4954                 $formats_nav .=
4955                         '(parent: ' .
4956                         $cgi->a({-href => href(action=>"commit",
4957                                                hash=>$parent)},
4958                                 esc_html(substr($parent, 0, 7))) .
4959                         ')';
4960         } else {
4961                 # merge commit
4962                 $formats_nav .=
4963                         '(merge: ' .
4964                         join(' ', map {
4965                                 $cgi->a({-href => href(action=>"commit",
4966                                                        hash=>$_)},
4967                                         esc_html(substr($_, 0, 7)));
4968                         } @$parents ) .
4969                         ')';
4970         }
4971
4972         if (!defined $parent) {
4973                 $parent = "--root";
4974         }
4975         my @difftree;
4976         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
4977                 @diff_opts,
4978                 (@$parents <= 1 ? $parent : '-c'),
4979                 $hash, "--"
4980                 or die_error(500, "Open git-diff-tree failed");
4981         @difftree = map { chomp; $_ } <$fd>;
4982         close $fd or die_error(404, "Reading git-diff-tree failed");
4983
4984         # non-textual hash id's can be cached
4985         my $expires;
4986         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4987                 $expires = "+1d";
4988         }
4989         my $refs = git_get_references();
4990         my $ref = format_ref_marker($refs, $co{'id'});
4991
4992         git_header_html(undef, $expires);
4993         git_print_page_nav('commit', '',
4994                            $hash, $co{'tree'}, $hash,
4995                            $formats_nav);
4996
4997         if (defined $co{'parent'}) {
4998                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
4999         } else {
5000                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
5001         }
5002         print "<div class=\"title_text\">\n" .
5003               "<table class=\"object_header\">\n";
5004         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
5005               "<tr>" .
5006               "<td></td><td> $ad{'rfc2822'}";
5007         if ($ad{'hour_local'} < 6) {
5008                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
5009                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
5010         } else {
5011                 printf(" (%02d:%02d %s)",
5012                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
5013         }
5014         print "</td>" .
5015               "</tr>\n";
5016         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
5017         print "<tr><td></td><td> $cd{'rfc2822'}" .
5018               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
5019               "</td></tr>\n";
5020         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
5021         print "<tr>" .
5022               "<td>tree</td>" .
5023               "<td class=\"sha1\">" .
5024               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
5025                        class => "list"}, $co{'tree'}) .
5026               "</td>" .
5027               "<td class=\"link\">" .
5028               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
5029                       "tree");
5030         my $snapshot_links = format_snapshot_links($hash);
5031         if (defined $snapshot_links) {
5032                 print " | " . $snapshot_links;
5033         }
5034         print "</td>" .
5035               "</tr>\n";
5036
5037         foreach my $par (@$parents) {
5038                 print "<tr>" .
5039                       "<td>parent</td>" .
5040                       "<td class=\"sha1\">" .
5041                       $cgi->a({-href => href(action=>"commit", hash=>$par),
5042                                class => "list"}, $par) .
5043                       "</td>" .
5044                       "<td class=\"link\">" .
5045                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
5046                       " | " .
5047                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
5048                       "</td>" .
5049                       "</tr>\n";
5050         }
5051         print "</table>".
5052               "</div>\n";
5053
5054         print "<div class=\"page_body\">\n";
5055         git_print_log($co{'comment'});
5056         print "</div>\n";
5057
5058         git_difftree_body(\@difftree, $hash, @$parents);
5059
5060         git_footer_html();
5061 }
5062
5063 sub git_object {
5064         # object is defined by:
5065         # - hash or hash_base alone
5066         # - hash_base and file_name
5067         my $type;
5068
5069         # - hash or hash_base alone
5070         if ($hash || ($hash_base && !defined $file_name)) {
5071                 my $object_id = $hash || $hash_base;
5072
5073                 open my $fd, "-|", quote_command(
5074                         git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
5075                         or die_error(404, "Object does not exist");
5076                 $type = <$fd>;
5077                 chomp $type;
5078                 close $fd
5079                         or die_error(404, "Object does not exist");
5080
5081         # - hash_base and file_name
5082         } elsif ($hash_base && defined $file_name) {
5083                 $file_name =~ s,/+$,,;
5084
5085                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
5086                         or die_error(404, "Base object does not exist");
5087
5088                 # here errors should not hapen
5089                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
5090                         or die_error(500, "Open git-ls-tree failed");
5091                 my $line = <$fd>;
5092                 close $fd;
5093
5094                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
5095                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
5096                         die_error(404, "File or directory for given base does not exist");
5097                 }
5098                 $type = $2;
5099                 $hash = $3;
5100         } else {
5101                 die_error(400, "Not enough information to find object");
5102         }
5103
5104         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
5105                                           hash=>$hash, hash_base=>$hash_base,
5106                                           file_name=>$file_name),
5107                              -status => '302 Found');
5108 }
5109
5110 sub git_blobdiff {
5111         my $format = shift || 'html';
5112
5113         my $fd;
5114         my @difftree;
5115         my %diffinfo;
5116         my $expires;
5117
5118         # preparing $fd and %diffinfo for git_patchset_body
5119         # new style URI
5120         if (defined $hash_base && defined $hash_parent_base) {
5121                 if (defined $file_name) {
5122                         # read raw output
5123                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5124                                 $hash_parent_base, $hash_base,
5125                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
5126                                 or die_error(500, "Open git-diff-tree failed");
5127                         @difftree = map { chomp; $_ } <$fd>;
5128                         close $fd
5129                                 or die_error(404, "Reading git-diff-tree failed");
5130                         @difftree
5131                                 or die_error(404, "Blob diff not found");
5132
5133                 } elsif (defined $hash &&
5134                          $hash =~ /[0-9a-fA-F]{40}/) {
5135                         # try to find filename from $hash
5136
5137                         # read filtered raw output
5138                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5139                                 $hash_parent_base, $hash_base, "--"
5140                                 or die_error(500, "Open git-diff-tree failed");
5141                         @difftree =
5142                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
5143                                 # $hash == to_id
5144                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
5145                                 map { chomp; $_ } <$fd>;
5146                         close $fd
5147                                 or die_error(404, "Reading git-diff-tree failed");
5148                         @difftree
5149                                 or die_error(404, "Blob diff not found");
5150
5151                 } else {
5152                         die_error(400, "Missing one of the blob diff parameters");
5153                 }
5154
5155                 if (@difftree > 1) {
5156                         die_error(400, "Ambiguous blob diff specification");
5157                 }
5158
5159                 %diffinfo = parse_difftree_raw_line($difftree[0]);
5160                 $file_parent ||= $diffinfo{'from_file'} || $file_name;
5161                 $file_name   ||= $diffinfo{'to_file'};
5162
5163                 $hash_parent ||= $diffinfo{'from_id'};
5164                 $hash        ||= $diffinfo{'to_id'};
5165
5166                 # non-textual hash id's can be cached
5167                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
5168                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
5169                         $expires = '+1d';
5170                 }
5171
5172                 # open patch output
5173                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5174                         '-p', ($format eq 'html' ? "--full-index" : ()),
5175                         $hash_parent_base, $hash_base,
5176                         "--", (defined $file_parent ? $file_parent : ()), $file_name
5177                         or die_error(500, "Open git-diff-tree failed");
5178         }
5179
5180         # old/legacy style URI
5181         if (!%diffinfo && # if new style URI failed
5182             defined $hash && defined $hash_parent) {
5183                 # fake git-diff-tree raw output
5184                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
5185                 $diffinfo{'from_id'} = $hash_parent;
5186                 $diffinfo{'to_id'}   = $hash;
5187                 if (defined $file_name) {
5188                         if (defined $file_parent) {
5189                                 $diffinfo{'status'} = '2';
5190                                 $diffinfo{'from_file'} = $file_parent;
5191                                 $diffinfo{'to_file'}   = $file_name;
5192                         } else { # assume not renamed
5193                                 $diffinfo{'status'} = '1';
5194                                 $diffinfo{'from_file'} = $file_name;
5195                                 $diffinfo{'to_file'}   = $file_name;
5196                         }
5197                 } else { # no filename given
5198                         $diffinfo{'status'} = '2';
5199                         $diffinfo{'from_file'} = $hash_parent;
5200                         $diffinfo{'to_file'}   = $hash;
5201                 }
5202
5203                 # non-textual hash id's can be cached
5204                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
5205                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5206                         $expires = '+1d';
5207                 }
5208
5209                 # open patch output
5210                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
5211                         '-p', ($format eq 'html' ? "--full-index" : ()),
5212                         $hash_parent, $hash, "--"
5213                         or die_error(500, "Open git-diff failed");
5214         } else  {
5215                 die_error(400, "Missing one of the blob diff parameters")
5216                         unless %diffinfo;
5217         }
5218
5219         # header
5220         if ($format eq 'html') {
5221                 my $formats_nav =
5222                         $cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
5223                                 "raw");
5224                 git_header_html(undef, $expires);
5225                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
5226                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
5227                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5228                 } else {
5229                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
5230                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
5231                 }
5232                 if (defined $file_name) {
5233                         git_print_page_path($file_name, "blob", $hash_base);
5234                 } else {
5235                         print "<div class=\"page_path\"></div>\n";
5236                 }
5237
5238         } elsif ($format eq 'plain') {
5239                 print $cgi->header(
5240                         -type => 'text/plain',
5241                         -charset => 'utf-8',
5242                         -expires => $expires,
5243                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
5244
5245                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5246
5247         } else {
5248                 die_error(400, "Unknown blobdiff format");
5249         }
5250
5251         # patch
5252         if ($format eq 'html') {
5253                 print "<div class=\"page_body\">\n";
5254
5255                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
5256                 close $fd;
5257
5258                 print "</div>\n"; # class="page_body"
5259                 git_footer_html();
5260
5261         } else {
5262                 while (my $line = <$fd>) {
5263                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
5264                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
5265
5266                         print $line;
5267
5268                         last if $line =~ m!^\+\+\+!;
5269                 }
5270                 local $/ = undef;
5271                 print <$fd>;
5272                 close $fd;
5273         }
5274 }
5275
5276 sub git_blobdiff_plain {
5277         git_blobdiff('plain');
5278 }
5279
5280 sub git_commitdiff {
5281         my $format = shift || 'html';
5282         $hash ||= $hash_base || "HEAD";
5283         my %co = parse_commit($hash)
5284             or die_error(404, "Unknown commit object");
5285
5286         # choose format for commitdiff for merge
5287         if (! defined $hash_parent && @{$co{'parents'}} > 1) {
5288                 $hash_parent = '--cc';
5289         }
5290         # we need to prepare $formats_nav before almost any parameter munging
5291         my $formats_nav;
5292         if ($format eq 'html') {
5293                 $formats_nav =
5294                         $cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
5295                                 "raw");
5296
5297                 if (defined $hash_parent &&
5298                     $hash_parent ne '-c' && $hash_parent ne '--cc') {
5299                         # commitdiff with two commits given
5300                         my $hash_parent_short = $hash_parent;
5301                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
5302                                 $hash_parent_short = substr($hash_parent, 0, 7);
5303                         }
5304                         $formats_nav .=
5305                                 ' (from';
5306                         for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
5307                                 if ($co{'parents'}[$i] eq $hash_parent) {
5308                                         $formats_nav .= ' parent ' . ($i+1);
5309                                         last;
5310                                 }
5311                         }
5312                         $formats_nav .= ': ' .
5313                                 $cgi->a({-href => href(action=>"commitdiff",
5314                                                        hash=>$hash_parent)},
5315                                         esc_html($hash_parent_short)) .
5316                                 ')';
5317                 } elsif (!$co{'parent'}) {
5318                         # --root commitdiff
5319                         $formats_nav .= ' (initial)';
5320                 } elsif (scalar @{$co{'parents'}} == 1) {
5321                         # single parent commit
5322                         $formats_nav .=
5323                                 ' (parent: ' .
5324                                 $cgi->a({-href => href(action=>"commitdiff",
5325                                                        hash=>$co{'parent'})},
5326                                         esc_html(substr($co{'parent'}, 0, 7))) .
5327                                 ')';
5328                 } else {
5329                         # merge commit
5330                         if ($hash_parent eq '--cc') {
5331                                 $formats_nav .= ' | ' .
5332                                         $cgi->a({-href => href(action=>"commitdiff",
5333                                                                hash=>$hash, hash_parent=>'-c')},
5334                                                 'combined');
5335                         } else { # $hash_parent eq '-c'
5336                                 $formats_nav .= ' | ' .
5337                                         $cgi->a({-href => href(action=>"commitdiff",
5338                                                                hash=>$hash, hash_parent=>'--cc')},
5339                                                 'compact');
5340                         }
5341                         $formats_nav .=
5342                                 ' (merge: ' .
5343                                 join(' ', map {
5344                                         $cgi->a({-href => href(action=>"commitdiff",
5345                                                                hash=>$_)},
5346                                                 esc_html(substr($_, 0, 7)));
5347                                 } @{$co{'parents'}} ) .
5348                                 ')';
5349                 }
5350         }
5351
5352         my $hash_parent_param = $hash_parent;
5353         if (!defined $hash_parent_param) {
5354                 # --cc for multiple parents, --root for parentless
5355                 $hash_parent_param =
5356                         @{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
5357         }
5358
5359         # read commitdiff
5360         my $fd;
5361         my @difftree;
5362         if ($format eq 'html') {
5363                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5364                         "--no-commit-id", "--patch-with-raw", "--full-index",
5365                         $hash_parent_param, $hash, "--"
5366                         or die_error(500, "Open git-diff-tree failed");
5367
5368                 while (my $line = <$fd>) {
5369                         chomp $line;
5370                         # empty line ends raw part of diff-tree output
5371                         last unless $line;
5372                         push @difftree, scalar parse_difftree_raw_line($line);
5373                 }
5374
5375         } elsif ($format eq 'plain') {
5376                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5377                         '-p', $hash_parent_param, $hash, "--"
5378                         or die_error(500, "Open git-diff-tree failed");
5379
5380         } else {
5381                 die_error(400, "Unknown commitdiff format");
5382         }
5383
5384         # non-textual hash id's can be cached
5385         my $expires;
5386         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
5387                 $expires = "+1d";
5388         }
5389
5390         # write commit message
5391         if ($format eq 'html') {
5392                 my $refs = git_get_references();
5393                 my $ref = format_ref_marker($refs, $co{'id'});
5394
5395                 git_header_html(undef, $expires);
5396                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
5397                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
5398                 git_print_authorship(\%co);
5399                 print "<div class=\"page_body\">\n";
5400                 if (@{$co{'comment'}} > 1) {
5401                         print "<div class=\"log\">\n";
5402                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
5403                         print "</div>\n"; # class="log"
5404                 }
5405
5406         } elsif ($format eq 'plain') {
5407                 my $refs = git_get_references("tags");
5408                 my $tagname = git_get_rev_name_tags($hash);
5409                 my $filename = basename($project) . "-$hash.patch";
5410
5411                 print $cgi->header(
5412                         -type => 'text/plain',
5413                         -charset => 'utf-8',
5414                         -expires => $expires,
5415                         -content_disposition => 'inline; filename="' . "$filename" . '"');
5416                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
5417                 print "From: " . to_utf8($co{'author'}) . "\n";
5418                 print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
5419                 print "Subject: " . to_utf8($co{'title'}) . "\n";
5420
5421                 print "X-Git-Tag: $tagname\n" if $tagname;
5422                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
5423
5424                 foreach my $line (@{$co{'comment'}}) {
5425                         print to_utf8($line) . "\n";
5426                 }
5427                 print "---\n\n";
5428         }
5429
5430         # write patch
5431         if ($format eq 'html') {
5432                 my $use_parents = !defined $hash_parent ||
5433                         $hash_parent eq '-c' || $hash_parent eq '--cc';
5434                 git_difftree_body(\@difftree, $hash,
5435                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
5436                 print "<br/>\n";
5437
5438                 git_patchset_body($fd, \@difftree, $hash,
5439                                   $use_parents ? @{$co{'parents'}} : $hash_parent);
5440                 close $fd;
5441                 print "</div>\n"; # class="page_body"
5442                 git_footer_html();
5443
5444         } elsif ($format eq 'plain') {
5445                 local $/ = undef;
5446                 print <$fd>;
5447                 close $fd
5448                         or print "Reading git-diff-tree failed\n";
5449         }
5450 }
5451
5452 sub git_commitdiff_plain {
5453         git_commitdiff('plain');
5454 }
5455
5456 sub git_history {
5457         if (!defined $hash_base) {
5458                 $hash_base = git_get_head_hash($project);
5459         }
5460         if (!defined $page) {
5461                 $page = 0;
5462         }
5463         my $ftype;
5464         my %co = parse_commit($hash_base)
5465             or die_error(404, "Unknown commit object");
5466
5467         my $refs = git_get_references();
5468         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
5469
5470         my @commitlist = parse_commits($hash_base, 101, (100 * $page),
5471                                        $file_name, "--full-history")
5472             or die_error(404, "No such file or directory on given branch");
5473
5474         if (!defined $hash && defined $file_name) {
5475                 # some commits could have deleted file in question,
5476                 # and not have it in tree, but one of them has to have it
5477                 for (my $i = 0; $i <= @commitlist; $i++) {
5478                         $hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
5479                         last if defined $hash;
5480                 }
5481         }
5482         if (defined $hash) {
5483                 $ftype = git_get_type($hash);
5484         }
5485         if (!defined $ftype) {
5486                 die_error(500, "Unknown type of object");
5487         }
5488
5489         my $paging_nav = '';
5490         if ($page > 0) {
5491                 $paging_nav .=
5492                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
5493                                                file_name=>$file_name)},
5494                                 "first");
5495                 $paging_nav .= " &sdot; " .
5496                         $cgi->a({-href => href(-replay=>1, page=>$page-1),
5497                                  -accesskey => "p", -title => "Alt-p"}, "prev");
5498         } else {
5499                 $paging_nav .= "first";
5500                 $paging_nav .= " &sdot; prev";
5501         }
5502         my $next_link = '';
5503         if ($#commitlist >= 100) {
5504                 $next_link =
5505                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
5506                                  -accesskey => "n", -title => "Alt-n"}, "next");
5507                 $paging_nav .= " &sdot; $next_link";
5508         } else {
5509                 $paging_nav .= " &sdot; next";
5510         }
5511
5512         git_header_html();
5513         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
5514         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
5515         git_print_page_path($file_name, $ftype, $hash_base);
5516
5517         git_history_body(\@commitlist, 0, 99,
5518                          $refs, $hash_base, $ftype, $next_link);
5519
5520         git_footer_html();
5521 }
5522
5523 sub git_search {
5524         gitweb_check_feature('search') or die_error(403, "Search is disabled");
5525         if (!defined $searchtext) {
5526                 die_error(400, "Text field is empty");
5527         }
5528         if (!defined $hash) {
5529                 $hash = git_get_head_hash($project);
5530         }
5531         my %co = parse_commit($hash);
5532         if (!%co) {
5533                 die_error(404, "Unknown commit object");
5534         }
5535         if (!defined $page) {
5536                 $page = 0;
5537         }
5538
5539         $searchtype ||= 'commit';
5540         if ($searchtype eq 'pickaxe') {
5541                 # pickaxe may take all resources of your box and run for several minutes
5542                 # with every query - so decide by yourself how public you make this feature
5543                 gitweb_check_feature('pickaxe')
5544                     or die_error(403, "Pickaxe is disabled");
5545         }
5546         if ($searchtype eq 'grep') {
5547                 gitweb_check_feature('grep')
5548                     or die_error(403, "Grep is disabled");
5549         }
5550
5551         git_header_html();
5552
5553         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
5554                 my $greptype;
5555                 if ($searchtype eq 'commit') {
5556                         $greptype = "--grep=";
5557                 } elsif ($searchtype eq 'author') {
5558                         $greptype = "--author=";
5559                 } elsif ($searchtype eq 'committer') {
5560                         $greptype = "--committer=";
5561                 }
5562                 $greptype .= $searchtext;
5563                 my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
5564                                                $greptype, '--regexp-ignore-case',
5565                                                $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
5566
5567                 my $paging_nav = '';
5568                 if ($page > 0) {
5569                         $paging_nav .=
5570                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
5571                                                        searchtext=>$searchtext,
5572                                                        searchtype=>$searchtype)},
5573                                         "first");
5574                         $paging_nav .= " &sdot; " .
5575                                 $cgi->a({-href => href(-replay=>1, page=>$page-1),
5576                                          -accesskey => "p", -title => "Alt-p"}, "prev");
5577                 } else {
5578                         $paging_nav .= "first";
5579                         $paging_nav .= " &sdot; prev";
5580                 }
5581                 my $next_link = '';
5582                 if ($#commitlist >= 100) {
5583                         $next_link =
5584                                 $cgi->a({-href => href(-replay=>1, page=>$page+1),
5585                                          -accesskey => "n", -title => "Alt-n"}, "next");
5586                         $paging_nav .= " &sdot; $next_link";
5587                 } else {
5588                         $paging_nav .= " &sdot; next";
5589                 }
5590
5591                 if ($#commitlist >= 100) {
5592                 }
5593
5594                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
5595                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5596                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
5597         }
5598
5599         if ($searchtype eq 'pickaxe') {
5600                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5601                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5602
5603                 print "<table class=\"pickaxe search\">\n";
5604                 my $alternate = 1;
5605                 $/ = "\n";
5606                 open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
5607                         '--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
5608                         ($search_use_regexp ? '--pickaxe-regex' : ());
5609                 undef %co;
5610                 my @files;
5611                 while (my $line = <$fd>) {
5612                         chomp $line;
5613                         next unless $line;
5614
5615                         my %set = parse_difftree_raw_line($line);
5616                         if (defined $set{'commit'}) {
5617                                 # finish previous commit
5618                                 if (%co) {
5619                                         print "</td>\n" .
5620                                               "<td class=\"link\">" .
5621                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5622                                               " | " .
5623                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5624                                         print "</td>\n" .
5625                                               "</tr>\n";
5626                                 }
5627
5628                                 if ($alternate) {
5629                                         print "<tr class=\"dark\">\n";
5630                                 } else {
5631                                         print "<tr class=\"light\">\n";
5632                                 }
5633                                 $alternate ^= 1;
5634                                 %co = parse_commit($set{'commit'});
5635                                 my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
5636                                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
5637                                       "<td><i>$author</i></td>\n" .
5638                                       "<td>" .
5639                                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
5640                                               -class => "list subject"},
5641                                               chop_and_escape_str($co{'title'}, 50) . "<br/>");
5642                         } elsif (defined $set{'to_id'}) {
5643                                 next if ($set{'to_id'} =~ m/^0{40}$/);
5644
5645                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
5646                                                              hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
5647                                               -class => "list"},
5648                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
5649                                       "<br/>\n";
5650                         }
5651                 }
5652                 close $fd;
5653
5654                 # finish last commit (warning: repetition!)
5655                 if (%co) {
5656                         print "</td>\n" .
5657                               "<td class=\"link\">" .
5658                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
5659                               " | " .
5660                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
5661                         print "</td>\n" .
5662                               "</tr>\n";
5663                 }
5664
5665                 print "</table>\n";
5666         }
5667
5668         if ($searchtype eq 'grep') {
5669                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
5670                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
5671
5672                 print "<table class=\"grep_search\">\n";
5673                 my $alternate = 1;
5674                 my $matches = 0;
5675                 $/ = "\n";
5676                 open my $fd, "-|", git_cmd(), 'grep', '-n',
5677                         $search_use_regexp ? ('-E', '-i') : '-F',
5678                         $searchtext, $co{'tree'};
5679                 my $lastfile = '';
5680                 while (my $line = <$fd>) {
5681                         chomp $line;
5682                         my ($file, $lno, $ltext, $binary);
5683                         last if ($matches++ > 1000);
5684                         if ($line =~ /^Binary file (.+) matches$/) {
5685                                 $file = $1;
5686                                 $binary = 1;
5687                         } else {
5688                                 (undef, $file, $lno, $ltext) = split(/:/, $line, 4);
5689                         }
5690                         if ($file ne $lastfile) {
5691                                 $lastfile and print "</td></tr>\n";
5692                                 if ($alternate++) {
5693                                         print "<tr class=\"dark\">\n";
5694                                 } else {
5695                                         print "<tr class=\"light\">\n";
5696                                 }
5697                                 print "<td class=\"list\">".
5698                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5699                                                                file_name=>"$file"),
5700                                                 -class => "list"}, esc_path($file));
5701                                 print "</td><td>\n";
5702                                 $lastfile = $file;
5703                         }
5704                         if ($binary) {
5705                                 print "<div class=\"binary\">Binary file</div>\n";
5706                         } else {
5707                                 $ltext = untabify($ltext);
5708                                 if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
5709                                         $ltext = esc_html($1, -nbsp=>1);
5710                                         $ltext .= '<span class="match">';
5711                                         $ltext .= esc_html($2, -nbsp=>1);
5712                                         $ltext .= '</span>';
5713                                         $ltext .= esc_html($3, -nbsp=>1);
5714                                 } else {
5715                                         $ltext = esc_html($ltext, -nbsp=>1);
5716                                 }
5717                                 print "<div class=\"pre\">" .
5718                                         $cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
5719                                                                file_name=>"$file").'#l'.$lno,
5720                                                 -class => "linenr"}, sprintf('%4i', $lno))
5721                                         . ' ' .  $ltext . "</div>\n";
5722                         }
5723                 }
5724                 if ($lastfile) {
5725                         print "</td></tr>\n";
5726                         if ($matches > 1000) {
5727                                 print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
5728                         }
5729                 } else {
5730                         print "<div class=\"diff nodifferences\">No matches found</div>\n";
5731                 }
5732                 close $fd;
5733
5734                 print "</table>\n";
5735         }
5736         git_footer_html();
5737 }
5738
5739 sub git_search_help {
5740         git_header_html();
5741         git_print_page_nav('','', $hash,$hash,$hash);
5742         print <<EOT;
5743 <p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
5744 regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
5745 the pattern entered is recognized as the POSIX extended
5746 <a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
5747 insensitive).</p>
5748 <dl>
5749 <dt><b>commit</b></dt>
5750 <dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
5751 EOT
5752         my ($have_grep) = gitweb_check_feature('grep');
5753         if ($have_grep) {
5754                 print <<EOT;
5755 <dt><b>grep</b></dt>
5756 <dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
5757     a different one) are searched for the given pattern. On large trees, this search can take
5758 a while and put some strain on the server, so please use it with some consideration. Note that
5759 due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
5760 case-sensitive.</dd>
5761 EOT
5762         }
5763         print <<EOT;
5764 <dt><b>author</b></dt>
5765 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
5766 <dt><b>committer</b></dt>
5767 <dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
5768 EOT
5769         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
5770         if ($have_pickaxe) {
5771                 print <<EOT;
5772 <dt><b>pickaxe</b></dt>
5773 <dd>All commits that caused the string to appear or disappear from any file (changes that
5774 added, removed or "modified" the string) will be listed. This search can take a while and
5775 takes a lot of strain on the server, so please use it wisely. Note that since you may be
5776 interested even in changes just changing the case as well, this search is case sensitive.</dd>
5777 EOT
5778         }
5779         print "</dl>\n";
5780         git_footer_html();
5781 }
5782
5783 sub git_shortlog {
5784         my $head = git_get_head_hash($project);
5785         if (!defined $hash) {
5786                 $hash = $head;
5787         }
5788         if (!defined $page) {
5789                 $page = 0;
5790         }
5791         my $refs = git_get_references();
5792
5793         my $commit_hash = $hash;
5794         if (defined $hash_parent) {
5795                 $commit_hash = "$hash_parent..$hash";
5796         }
5797         my @commitlist = parse_commits($commit_hash, 101, (100 * $page));
5798
5799         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#commitlist >= 100);
5800         my $next_link = '';
5801         if ($#commitlist >= 100) {
5802                 $next_link =
5803                         $cgi->a({-href => href(-replay=>1, page=>$page+1),
5804                                  -accesskey => "n", -title => "Alt-n"}, "next");
5805         }
5806
5807         git_header_html();
5808         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
5809         git_print_header_div('summary', $project);
5810
5811         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
5812
5813         git_footer_html();
5814 }
5815
5816 ## ......................................................................
5817 ## feeds (RSS, Atom; OPML)
5818
5819 sub git_feed {
5820         my $format = shift || 'atom';
5821         my ($have_blame) = gitweb_check_feature('blame');
5822
5823         # Atom: http://www.atomenabled.org/developers/syndication/
5824         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
5825         if ($format ne 'rss' && $format ne 'atom') {
5826                 die_error(400, "Unknown web feed format");
5827         }
5828
5829         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
5830         my $head = $hash || 'HEAD';
5831         my @commitlist = parse_commits($head, 150, 0, $file_name);
5832
5833         my %latest_commit;
5834         my %latest_date;
5835         my $content_type = "application/$format+xml";
5836         if (defined $cgi->http('HTTP_ACCEPT') &&
5837                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
5838                 # browser (feed reader) prefers text/xml
5839                 $content_type = 'text/xml';
5840         }
5841         if (defined($commitlist[0])) {
5842                 %latest_commit = %{$commitlist[0]};
5843                 %latest_date   = parse_date($latest_commit{'author_epoch'});
5844                 print $cgi->header(
5845                         -type => $content_type,
5846                         -charset => 'utf-8',
5847                         -last_modified => $latest_date{'rfc2822'});
5848         } else {
5849                 print $cgi->header(
5850                         -type => $content_type,
5851                         -charset => 'utf-8');
5852         }
5853
5854         # Optimization: skip generating the body if client asks only
5855         # for Last-Modified date.
5856         return if ($cgi->request_method() eq 'HEAD');
5857
5858         # header variables
5859         my $title = "$site_name - $project/$action";
5860         my $feed_type = 'log';
5861         if (defined $hash) {
5862                 $title .= " - '$hash'";
5863                 $feed_type = 'branch log';
5864                 if (defined $file_name) {
5865                         $title .= " :: $file_name";
5866                         $feed_type = 'history';
5867                 }
5868         } elsif (defined $file_name) {
5869                 $title .= " - $file_name";
5870                 $feed_type = 'history';
5871         }
5872         $title .= " $feed_type";
5873         my $descr = git_get_project_description($project);
5874         if (defined $descr) {
5875                 $descr = esc_html($descr);
5876         } else {
5877                 $descr = "$project " .
5878                          ($format eq 'rss' ? 'RSS' : 'Atom') .
5879                          " feed";
5880         }
5881         my $owner = git_get_project_owner($project);
5882         $owner = esc_html($owner);
5883
5884         #header
5885         my $alt_url;
5886         if (defined $file_name) {
5887                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
5888         } elsif (defined $hash) {
5889                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
5890         } else {
5891                 $alt_url = href(-full=>1, action=>"summary");
5892         }
5893         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
5894         if ($format eq 'rss') {
5895                 print <<XML;
5896 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
5897 <channel>
5898 XML
5899                 print "<title>$title</title>\n" .
5900                       "<link>$alt_url</link>\n" .
5901                       "<description>$descr</description>\n" .
5902                       "<language>en</language>\n";
5903         } elsif ($format eq 'atom') {
5904                 print <<XML;
5905 <feed xmlns="http://www.w3.org/2005/Atom">
5906 XML
5907                 print "<title>$title</title>\n" .
5908                       "<subtitle>$descr</subtitle>\n" .
5909                       '<link rel="alternate" type="text/html" href="' .
5910                       $alt_url . '" />' . "\n" .
5911                       '<link rel="self" type="' . $content_type . '" href="' .
5912                       $cgi->self_url() . '" />' . "\n" .
5913                       "<id>" . href(-full=>1) . "</id>\n" .
5914                       # use project owner for feed author
5915                       "<author><name>$owner</name></author>\n";
5916                 if (defined $favicon) {
5917                         print "<icon>" . esc_url($favicon) . "</icon>\n";
5918                 }
5919                 if (defined $logo_url) {
5920                         # not twice as wide as tall: 72 x 27 pixels
5921                         print "<logo>" . esc_url($logo) . "</logo>\n";
5922                 }
5923                 if (! %latest_date) {
5924                         # dummy date to keep the feed valid until commits trickle in:
5925                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
5926                 } else {
5927                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
5928                 }
5929         }
5930
5931         # contents
5932         for (my $i = 0; $i <= $#commitlist; $i++) {
5933                 my %co = %{$commitlist[$i]};
5934                 my $commit = $co{'id'};
5935                 # we read 150, we always show 30 and the ones more recent than 48 hours
5936                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
5937                         last;
5938                 }
5939                 my %cd = parse_date($co{'author_epoch'});
5940
5941                 # get list of changed files
5942                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
5943                         $co{'parent'} || "--root",
5944                         $co{'id'}, "--", (defined $file_name ? $file_name : ())
5945                         or next;
5946                 my @difftree = map { chomp; $_ } <$fd>;
5947                 close $fd
5948                         or next;
5949
5950                 # print element (entry, item)
5951                 my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
5952                 if ($format eq 'rss') {
5953                         print "<item>\n" .
5954                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
5955                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
5956                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
5957                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
5958                               "<link>$co_url</link>\n" .
5959                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
5960                               "<content:encoded>" .
5961                               "<![CDATA[\n";
5962                 } elsif ($format eq 'atom') {
5963                         print "<entry>\n" .
5964                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
5965                               "<updated>$cd{'iso-8601'}</updated>\n" .
5966                               "<author>\n" .
5967                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
5968                         if ($co{'author_email'}) {
5969                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
5970                         }
5971                         print "</author>\n" .
5972                               # use committer for contributor
5973                               "<contributor>\n" .
5974                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
5975                         if ($co{'committer_email'}) {
5976                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
5977                         }
5978                         print "</contributor>\n" .
5979                               "<published>$cd{'iso-8601'}</published>\n" .
5980                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
5981                               "<id>$co_url</id>\n" .
5982                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
5983                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
5984                 }
5985                 my $comment = $co{'comment'};
5986                 print "<pre>\n";
5987                 foreach my $line (@$comment) {
5988                         $line = esc_html($line);
5989                         print "$line\n";
5990                 }
5991                 print "</pre><ul>\n";
5992                 foreach my $difftree_line (@difftree) {
5993                         my %difftree = parse_difftree_raw_line($difftree_line);
5994                         next if !$difftree{'from_id'};
5995
5996                         my $file = $difftree{'file'} || $difftree{'to_file'};
5997
5998                         print "<li>" .
5999                               "[" .
6000                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
6001                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
6002                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
6003                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
6004                                       -title => "diff"}, 'D');
6005                         if ($have_blame) {
6006                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
6007                                                              file_name=>$file, hash_base=>$commit),
6008                                               -title => "blame"}, 'B');
6009                         }
6010                         # if this is not a feed of a file history
6011                         if (!defined $file_name || $file_name ne $file) {
6012                                 print $cgi->a({-href => href(-full=>1, action=>"history",
6013                                                              file_name=>$file, hash=>$commit),
6014                                               -title => "history"}, 'H');
6015                         }
6016                         $file = esc_path($file);
6017                         print "] ".
6018                               "$file</li>\n";
6019                 }
6020                 if ($format eq 'rss') {
6021                         print "</ul>]]>\n" .
6022                               "</content:encoded>\n" .
6023                               "</item>\n";
6024                 } elsif ($format eq 'atom') {
6025                         print "</ul>\n</div>\n" .
6026                               "</content>\n" .
6027                               "</entry>\n";
6028                 }
6029         }
6030
6031         # end of feed
6032         if ($format eq 'rss') {
6033                 print "</channel>\n</rss>\n";
6034         }       elsif ($format eq 'atom') {
6035                 print "</feed>\n";
6036         }
6037 }
6038
6039 sub git_rss {
6040         git_feed('rss');
6041 }
6042
6043 sub git_atom {
6044         git_feed('atom');
6045 }
6046
6047 sub git_opml {
6048         my @list = git_get_projects_list();
6049
6050         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
6051         print <<XML;
6052 <?xml version="1.0" encoding="utf-8"?>
6053 <opml version="1.0">
6054 <head>
6055   <title>$site_name OPML Export</title>
6056 </head>
6057 <body>
6058 <outline text="git RSS feeds">
6059 XML
6060
6061         foreach my $pr (@list) {
6062                 my %proj = %$pr;
6063                 my $head = git_get_head_hash($proj{'path'});
6064                 if (!defined $head) {
6065                         next;
6066                 }
6067                 $git_dir = "$projectroot/$proj{'path'}";
6068                 my %co = parse_commit($head);
6069                 if (!%co) {
6070                         next;
6071                 }
6072
6073                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
6074                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
6075                 my $html = "$my_url?p=$proj{'path'};a=summary";
6076                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
6077         }
6078         print <<XML;
6079 </outline>
6080 </body>
6081 </opml>
6082 XML
6083 }