Lady’s Gitweb - Gitweb/blob - gitweb.perl

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