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