gitweb/gitweb.perl

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