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

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++"
  43                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  44
  45 # filename of html text to include at top of each page
  46 our $site_header = "++GITWEB_SITE_HEADER++";
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49 # filename of html text to include at bottom of each page
  50 our $site_footer = "++GITWEB_SITE_FOOTER++";
  51
  52 # URI of stylesheets
  53 our @stylesheets = ("++GITWEB_CSS++");
  54 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55 our $stylesheet = undef;
  56
  57 # URI of GIT logo (72x27 size)
  58 our $logo = "++GITWEB_LOGO++";
  59 # URI of GIT favicon, assumed to be image/png type
  60 our $favicon = "++GITWEB_FAVICON++";
  61
  62 # URI and label (title) of GIT logo link
  63 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  64 #our $logo_label = "git documentation";
  65 our $logo_url = "http://git.or.cz/";
  66 our $logo_label = "git homepage";
  67
  68 # source of projects list
  69 our $projects_list = "++GITWEB_LIST++";
  70
  71 # show repository only if this file exists
  72 # (only effective if this variable evaluates to true)
  73 our $export_ok = "++GITWEB_EXPORT_OK++";
  74
  75 # only allow viewing of repositories also shown on the overview page
  76 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  77
  78 # list of git base URLs used for URL to where fetch project from,
  79 # i.e. full URL is "$git_base_url/$project"
  80 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  81
  82 # default blob_plain mimetype and default charset for text/plain blob
  83 our $default_blob_plain_mimetype = 'text/plain';
  84 our $default_text_plain_charset  = undef;
  85
  86 # file to use for guessing MIME types before trying /etc/mime.types
  87 # (relative to the current git repository)
  88 our $mimetypes_file = undef;
  89
  90 # You define site-wide feature defaults here; override them with
  91 # $GITWEB_CONFIG as necessary.
  92 our %feature = (
  93         # feature => {
  94         #       'sub' => feature-sub (subroutine),
  95         #       'override' => allow-override (boolean),
  96         #       'default' => [ default options...] (array reference)}
  97         #
  98         # if feature is overridable (it means that allow-override has true value,
  99         # then feature-sub will be called with default options as parameters;
 100         # return value of feature-sub indicates if to enable specified feature
 101         #
 102         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 103
 104         # Enable the 'blame' blob view, showing the last commit that modified
 105         # each line in the file. This can be very CPU-intensive.
 106
 107         # To enable system wide have in $GITWEB_CONFIG
 108         # $feature{'blame'}{'default'} = [1];
 109         # To have project specific config enable override in $GITWEB_CONFIG
 110         # $feature{'blame'}{'override'} = 1;
 111         # and in project config gitweb.blame = 0|1;
 112         'blame' => {
 113                 'sub' => \&feature_blame,
 114                 'override' => 0,
 115                 'default' => [0]},
 116
 117         # Enable the 'snapshot' link, providing a compressed tarball of any
 118         # tree. This can potentially generate high traffic if you have large
 119         # project.
 120
 121         # To disable system wide have in $GITWEB_CONFIG
 122         # $feature{'snapshot'}{'default'} = [undef];
 123         # To have project specific config enable override in $GITWEB_CONFIG
 124         # $feature{'snapshot'}{'override'} = 1;
 125         # and in project config gitweb.snapshot = none|gzip|bzip2;
 126         'snapshot' => {
 127                 'sub' => \&feature_snapshot,
 128                 'override' => 0,
 129                 #         => [content-encoding, suffix, program]
 130                 'default' => ['x-gzip', 'gz', 'gzip']},
 131
 132         # Enable the pickaxe search, which will list the commits that modified
 133         # a given string in a file. This can be practical and quite faster
 134         # alternative to 'blame', but still potentially CPU-intensive.
 135
 136         # To enable system wide have in $GITWEB_CONFIG
 137         # $feature{'pickaxe'}{'default'} = [1];
 138         # To have project specific config enable override in $GITWEB_CONFIG
 139         # $feature{'pickaxe'}{'override'} = 1;
 140         # and in project config gitweb.pickaxe = 0|1;
 141         'pickaxe' => {
 142                 'sub' => \&feature_pickaxe,
 143                 'override' => 0,
 144                 'default' => [1]},
 145
 146         # Make gitweb use an alternative format of the URLs which can be
 147         # more readable and natural-looking: project name is embedded
 148         # directly in the path and the query string contains other
 149         # auxiliary information. All gitweb installations recognize
 150         # URL in either format; this configures in which formats gitweb
 151         # generates links.
 152
 153         # To enable system wide have in $GITWEB_CONFIG
 154         # $feature{'pathinfo'}{'default'} = [1];
 155         # Project specific override is not supported.
 156
 157         # Note that you will need to change the default location of CSS,
 158         # favicon, logo and possibly other files to an absolute URL. Also,
 159         # if gitweb.cgi serves as your indexfile, you will need to force
 160         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 161         'pathinfo' => {
 162                 'override' => 0,
 163                 'default' => [0]},
 164
 165         # Make gitweb consider projects in project root subdirectories
 166         # to be forks of existing projects. Given project $projname.git,
 167         # projects matching $projname/*.git will not be shown in the main
 168         # projects list, instead a '+' mark will be added to $projname
 169         # there and a 'forks' view will be enabled for the project, listing
 170         # all the forks. This feature is supported only if project list
 171         # is taken from a directory, not file.
 172
 173         # To enable system wide have in $GITWEB_CONFIG
 174         # $feature{'forks'}{'default'} = [1];
 175         # Project specific override is not supported.
 176         'forks' => {
 177                 'override' => 0,
 178                 'default' => [0]},
 179 );
 180
 181 sub gitweb_check_feature {
 182         my ($name) = @_;
 183         return unless exists $feature{$name};
 184         my ($sub, $override, @defaults) = (
 185                 $feature{$name}{'sub'},
 186                 $feature{$name}{'override'},
 187                 @{$feature{$name}{'default'}});
 188         if (!$override) { return @defaults; }
 189         if (!defined $sub) {
 190                 warn "feature $name is not overrideable";
 191                 return @defaults;
 192         }
 193         return $sub->(@defaults);
 194 }
 195
 196 sub feature_blame {
 197         my ($val) = git_get_project_config('blame', '--bool');
 198
 199         if ($val eq 'true') {
 200                 return 1;
 201         } elsif ($val eq 'false') {
 202                 return 0;
 203         }
 204
 205         return $_[0];
 206 }
 207
 208 sub feature_snapshot {
 209         my ($ctype, $suffix, $command) = @_;
 210
 211         my ($val) = git_get_project_config('snapshot');
 212
 213         if ($val eq 'gzip') {
 214                 return ('x-gzip', 'gz', 'gzip');
 215         } elsif ($val eq 'bzip2') {
 216                 return ('x-bzip2', 'bz2', 'bzip2');
 217         } elsif ($val eq 'none') {
 218                 return ();
 219         }
 220
 221         return ($ctype, $suffix, $command);
 222 }
 223
 224 sub gitweb_have_snapshot {
 225         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 226         my $have_snapshot = (defined $ctype && defined $suffix);
 227
 228         return $have_snapshot;
 229 }
 230
 231 sub feature_pickaxe {
 232         my ($val) = git_get_project_config('pickaxe', '--bool');
 233
 234         if ($val eq 'true') {
 235                 return (1);
 236         } elsif ($val eq 'false') {
 237                 return (0);
 238         }
 239
 240         return ($_[0]);
 241 }
 242
 243 # checking HEAD file with -e is fragile if the repository was
 244 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 245 # and then pruned.
 246 sub check_head_link {
 247         my ($dir) = @_;
 248         my $headfile = "$dir/HEAD";
 249         return ((-e $headfile) ||
 250                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 251 }
 252
 253 sub check_export_ok {
 254         my ($dir) = @_;
 255         return (check_head_link($dir) &&
 256                 (!$export_ok || -e "$dir/$export_ok"));
 257 }
 258
 259 # rename detection options for git-diff and git-diff-tree
 260 # - default is '-M', with the cost proportional to
 261 #   (number of removed files) * (number of new files).
 262 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 263 #   (number of changed files + number of removed files) * (number of new files)
 264 # - even more costly is '-C', '--find-copies-harder' with cost
 265 #   (number of files in the original tree) * (number of new files)
 266 # - one might want to include '-B' option, e.g. '-B', '-M'
 267 our @diff_opts = ('-M'); # taken from git_commit
 268
 269 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 270 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 271
 272 # version of the core git binary
 273 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 274
 275 $projects_list ||= $projectroot;
 276
 277 # ======================================================================
 278 # input validation and dispatch
 279 our $action = $cgi->param('a');
 280 if (defined $action) {
 281         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 282                 die_error(undef, "Invalid action parameter");
 283         }
 284 }
 285
 286 # parameters which are pathnames
 287 our $project = $cgi->param('p');
 288 if (defined $project) {
 289         if (!validate_pathname($project) ||
 290             !(-d "$projectroot/$project") ||
 291             !check_head_link("$projectroot/$project") ||
 292             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 293             ($strict_export && !project_in_list($project))) {
 294                 undef $project;
 295                 die_error(undef, "No such project");
 296         }
 297 }
 298
 299 our $file_name = $cgi->param('f');
 300 if (defined $file_name) {
 301         if (!validate_pathname($file_name)) {
 302                 die_error(undef, "Invalid file parameter");
 303         }
 304 }
 305
 306 our $file_parent = $cgi->param('fp');
 307 if (defined $file_parent) {
 308         if (!validate_pathname($file_parent)) {
 309                 die_error(undef, "Invalid file parent parameter");
 310         }
 311 }
 312
 313 # parameters which are refnames
 314 our $hash = $cgi->param('h');
 315 if (defined $hash) {
 316         if (!validate_refname($hash)) {
 317                 die_error(undef, "Invalid hash parameter");
 318         }
 319 }
 320
 321 our $hash_parent = $cgi->param('hp');
 322 if (defined $hash_parent) {
 323         if (!validate_refname($hash_parent)) {
 324                 die_error(undef, "Invalid hash parent parameter");
 325         }
 326 }
 327
 328 our $hash_base = $cgi->param('hb');
 329 if (defined $hash_base) {
 330         if (!validate_refname($hash_base)) {
 331                 die_error(undef, "Invalid hash base parameter");
 332         }
 333 }
 334
 335 our $hash_parent_base = $cgi->param('hpb');
 336 if (defined $hash_parent_base) {
 337         if (!validate_refname($hash_parent_base)) {
 338                 die_error(undef, "Invalid hash parent base parameter");
 339         }
 340 }
 341
 342 # other parameters
 343 our $page = $cgi->param('pg');
 344 if (defined $page) {
 345         if ($page =~ m/[^0-9]/) {
 346                 die_error(undef, "Invalid page parameter");
 347         }
 348 }
 349
 350 our $searchtext = $cgi->param('s');
 351 if (defined $searchtext) {
 352         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 353                 die_error(undef, "Invalid search parameter");
 354         }
 355         if (length($searchtext) < 2) {
 356                 die_error(undef, "At least two characters are required for search parameter");
 357         }
 358         $searchtext = quotemeta $searchtext;
 359 }
 360
 361 our $searchtype = $cgi->param('st');
 362 if (defined $searchtype) {
 363         if ($searchtype =~ m/[^a-z]/) {
 364                 die_error(undef, "Invalid searchtype parameter");
 365         }
 366 }
 367
 368 # now read PATH_INFO and use it as alternative to parameters
 369 sub evaluate_path_info {
 370         return if defined $project;
 371         my $path_info = $ENV{"PATH_INFO"};
 372         return if !$path_info;
 373         $path_info =~ s,^/+,,;
 374         return if !$path_info;
 375         # find which part of PATH_INFO is project
 376         $project = $path_info;
 377         $project =~ s,/+$,,;
 378         while ($project && !check_head_link("$projectroot/$project")) {
 379                 $project =~ s,/*[^/]*$,,;
 380         }
 381         # validate project
 382         $project = validate_pathname($project);
 383         if (!$project ||
 384             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 385             ($strict_export && !project_in_list($project))) {
 386                 undef $project;
 387                 return;
 388         }
 389         # do not change any parameters if an action is given using the query string
 390         return if $action;
 391         $path_info =~ s,^$project/*,,;
 392         my ($refname, $pathname) = split(/:/, $path_info, 2);
 393         if (defined $pathname) {
 394                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 395                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 396                 $pathname =~ s,^/+,,;
 397                 if (!$pathname || substr($pathname, -1) eq "/") {
 398                         $action  ||= "tree";
 399                         $pathname =~ s,/$,,;
 400                 } else {
 401                         $action  ||= "blob_plain";
 402                 }
 403                 $hash_base ||= validate_refname($refname);
 404                 $file_name ||= validate_pathname($pathname);
 405         } elsif (defined $refname) {
 406                 # we got "project.git/branch"
 407                 $action ||= "shortlog";
 408                 $hash   ||= validate_refname($refname);
 409         }
 410 }
 411 evaluate_path_info();
 412
 413 # path to the current git repository
 414 our $git_dir;
 415 $git_dir = "$projectroot/$project" if $project;
 416
 417 # dispatch
 418 my %actions = (
 419         "blame" => \&git_blame2,
 420         "blobdiff" => \&git_blobdiff,
 421         "blobdiff_plain" => \&git_blobdiff_plain,
 422         "blob" => \&git_blob,
 423         "blob_plain" => \&git_blob_plain,
 424         "commitdiff" => \&git_commitdiff,
 425         "commitdiff_plain" => \&git_commitdiff_plain,
 426         "commit" => \&git_commit,
 427         "forks" => \&git_forks,
 428         "heads" => \&git_heads,
 429         "history" => \&git_history,
 430         "log" => \&git_log,
 431         "rss" => \&git_rss,
 432         "atom" => \&git_atom,
 433         "search" => \&git_search,
 434         "search_help" => \&git_search_help,
 435         "shortlog" => \&git_shortlog,
 436         "summary" => \&git_summary,
 437         "tag" => \&git_tag,
 438         "tags" => \&git_tags,
 439         "tree" => \&git_tree,
 440         "snapshot" => \&git_snapshot,
 441         "object" => \&git_object,
 442         # those below don't need $project
 443         "opml" => \&git_opml,
 444         "project_list" => \&git_project_list,
 445         "project_index" => \&git_project_index,
 446 );
 447
 448 if (defined $project) {
 449         $action ||= 'summary';
 450 } else {
 451         $action ||= 'project_list';
 452 }
 453 if (!defined($actions{$action})) {
 454         die_error(undef, "Unknown action");
 455 }
 456 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 457     !$project) {
 458         die_error(undef, "Project needed");
 459 }
 460 $actions{$action}->();
 461 exit;
 462
 463 ## ======================================================================
 464 ## action links
 465
 466 sub href(%) {
 467         my %params = @_;
 468         # default is to use -absolute url() i.e. $my_uri
 469         my $href = $params{-full} ? $my_url : $my_uri;
 470
 471         # XXX: Warning: If you touch this, check the search form for updating,
 472         # too.
 473
 474         my @mapping = (
 475                 project => "p",
 476                 action => "a",
 477                 file_name => "f",
 478                 file_parent => "fp",
 479                 hash => "h",
 480                 hash_parent => "hp",
 481                 hash_base => "hb",
 482                 hash_parent_base => "hpb",
 483                 page => "pg",
 484                 order => "o",
 485                 searchtext => "s",
 486                 searchtype => "st",
 487         );
 488         my %mapping = @mapping;
 489
 490         $params{'project'} = $project unless exists $params{'project'};
 491
 492         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 493         if ($use_pathinfo) {
 494                 # use PATH_INFO for project name
 495                 $href .= "/$params{'project'}" if defined $params{'project'};
 496                 delete $params{'project'};
 497
 498                 # Summary just uses the project path URL
 499                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 500                         delete $params{'action'};
 501                 }
 502         }
 503
 504         # now encode the parameters explicitly
 505         my @result = ();
 506         for (my $i = 0; $i < @mapping; $i += 2) {
 507                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 508                 if (defined $params{$name}) {
 509                         push @result, $symbol . "=" . esc_param($params{$name});
 510                 }
 511         }
 512         $href .= "?" . join(';', @result) if scalar @result;
 513
 514         return $href;
 515 }
 516
 517
 518 ## ======================================================================
 519 ## validation, quoting/unquoting and escaping
 520
 521 sub validate_pathname {
 522         my $input = shift || return undef;
 523
 524         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 525         # at the beginning, at the end, and between slashes.
 526         # also this catches doubled slashes
 527         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 528                 return undef;
 529         }
 530         # no null characters
 531         if ($input =~ m!\0!) {
 532                 return undef;
 533         }
 534         return $input;
 535 }
 536
 537 sub validate_refname {
 538         my $input = shift || return undef;
 539
 540         # textual hashes are O.K.
 541         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 542                 return $input;
 543         }
 544         # it must be correct pathname
 545         $input = validate_pathname($input)
 546                 or return undef;
 547         # restrictions on ref name according to git-check-ref-format
 548         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 549                 return undef;
 550         }
 551         return $input;
 552 }
 553
 554 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 555 sub to_utf8 {
 556         my $str = shift;
 557         return decode("utf8", $str, Encode::FB_DEFAULT);
 558 }
 559
 560 # quote unsafe chars, but keep the slash, even when it's not
 561 # correct, but quoted slashes look too horrible in bookmarks
 562 sub esc_param {
 563         my $str = shift;
 564         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 565         $str =~ s/\+/%2B/g;
 566         $str =~ s/ /\+/g;
 567         return $str;
 568 }
 569
 570 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 571 sub esc_url {
 572         my $str = shift;
 573         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 574         $str =~ s/\+/%2B/g;
 575         $str =~ s/ /\+/g;
 576         return $str;
 577 }
 578
 579 # replace invalid utf8 character with SUBSTITUTION sequence
 580 sub esc_html ($;%) {
 581         my $str = shift;
 582         my %opts = @_;
 583
 584         $str = to_utf8($str);
 585         $str = escapeHTML($str);
 586         if ($opts{'-nbsp'}) {
 587                 $str =~ s/ /&nbsp;/g;
 588         }
 589         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 590         return $str;
 591 }
 592
 593 # quote control characters and escape filename to HTML
 594 sub esc_path {
 595         my $str = shift;
 596         my %opts = @_;
 597
 598         $str = to_utf8($str);
 599         $str = escapeHTML($str);
 600         if ($opts{'-nbsp'}) {
 601                 $str =~ s/ /&nbsp;/g;
 602         }
 603         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 604         return $str;
 605 }
 606
 607 # Make control characters "printable", using character escape codes (CEC)
 608 sub quot_cec {
 609         my $cntrl = shift;
 610         my %es = ( # character escape codes, aka escape sequences
 611                    "\t" => '\t',   # tab            (HT)
 612                    "\n" => '\n',   # line feed      (LF)
 613                    "\r" => '\r',   # carrige return (CR)
 614                    "\f" => '\f',   # form feed      (FF)
 615                    "\b" => '\b',   # backspace      (BS)
 616                    "\a" => '\a',   # alarm (bell)   (BEL)
 617                    "\e" => '\e',   # escape         (ESC)
 618                    "\013" => '\v', # vertical tab   (VT)
 619                    "\000" => '\0', # nul character  (NUL)
 620                    );
 621         my $chr = ( (exists $es{$cntrl})
 622                     ? $es{$cntrl}
 623                     : sprintf('\%03o', ord($cntrl)) );
 624         return "<span class=\"cntrl\">$chr</span>";
 625 }
 626
 627 # Alternatively use unicode control pictures codepoints,
 628 # Unicode "printable representation" (PR)
 629 sub quot_upr {
 630         my $cntrl = shift;
 631         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 632         return "<span class=\"cntrl\">$chr</span>";
 633 }
 634
 635 # git may return quoted and escaped filenames
 636 sub unquote {
 637         my $str = shift;
 638
 639         sub unq {
 640                 my $seq = shift;
 641                 my %es = ( # character escape codes, aka escape sequences
 642                         't' => "\t",   # tab            (HT, TAB)
 643                         'n' => "\n",   # newline        (NL)
 644                         'r' => "\r",   # return         (CR)
 645                         'f' => "\f",   # form feed      (FF)
 646                         'b' => "\b",   # backspace      (BS)
 647                         'a' => "\a",   # alarm (bell)   (BEL)
 648                         'e' => "\e",   # escape         (ESC)
 649                         'v' => "\013", # vertical tab   (VT)
 650                 );
 651
 652                 if ($seq =~ m/^[0-7]{1,3}$/) {
 653                         # octal char sequence
 654                         return chr(oct($seq));
 655                 } elsif (exists $es{$seq}) {
 656                         # C escape sequence, aka character escape code
 657                         return $es{$seq}
 658                 }
 659                 # quoted ordinary character
 660                 return $seq;
 661         }
 662
 663         if ($str =~ m/^"(.*)"$/) {
 664                 # needs unquoting
 665                 $str = $1;
 666                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 667         }
 668         return $str;
 669 }
 670
 671 # escape tabs (convert tabs to spaces)
 672 sub untabify {
 673         my $line = shift;
 674
 675         while ((my $pos = index($line, "\t")) != -1) {
 676                 if (my $count = (8 - ($pos % 8))) {
 677                         my $spaces = ' ' x $count;
 678                         $line =~ s/\t/$spaces/;
 679                 }
 680         }
 681
 682         return $line;
 683 }
 684
 685 sub project_in_list {
 686         my $project = shift;
 687         my @list = git_get_projects_list();
 688         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 689 }
 690
 691 ## ----------------------------------------------------------------------
 692 ## HTML aware string manipulation
 693
 694 sub chop_str {
 695         my $str = shift;
 696         my $len = shift;
 697         my $add_len = shift || 10;
 698
 699         # allow only $len chars, but don't cut a word if it would fit in $add_len
 700         # if it doesn't fit, cut it if it's still longer than the dots we would add
 701         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 702         my $body = $1;
 703         my $tail = $2;
 704         if (length($tail) > 4) {
 705                 $tail = " ...";
 706                 $body =~ s/&[^;]*$//; # remove chopped character entities
 707         }
 708         return "$body$tail";
 709 }
 710
 711 ## ----------------------------------------------------------------------
 712 ## functions returning short strings
 713
 714 # CSS class for given age value (in seconds)
 715 sub age_class {
 716         my $age = shift;
 717
 718         if ($age < 60*60*2) {
 719                 return "age0";
 720         } elsif ($age < 60*60*24*2) {
 721                 return "age1";
 722         } else {
 723                 return "age2";
 724         }
 725 }
 726
 727 # convert age in seconds to "nn units ago" string
 728 sub age_string {
 729         my $age = shift;
 730         my $age_str;
 731
 732         if ($age > 60*60*24*365*2) {
 733                 $age_str = (int $age/60/60/24/365);
 734                 $age_str .= " years ago";
 735         } elsif ($age > 60*60*24*(365/12)*2) {
 736                 $age_str = int $age/60/60/24/(365/12);
 737                 $age_str .= " months ago";
 738         } elsif ($age > 60*60*24*7*2) {
 739                 $age_str = int $age/60/60/24/7;
 740                 $age_str .= " weeks ago";
 741         } elsif ($age > 60*60*24*2) {
 742                 $age_str = int $age/60/60/24;
 743                 $age_str .= " days ago";
 744         } elsif ($age > 60*60*2) {
 745                 $age_str = int $age/60/60;
 746                 $age_str .= " hours ago";
 747         } elsif ($age > 60*2) {
 748                 $age_str = int $age/60;
 749                 $age_str .= " min ago";
 750         } elsif ($age > 2) {
 751                 $age_str = int $age;
 752                 $age_str .= " sec ago";
 753         } else {
 754                 $age_str .= " right now";
 755         }
 756         return $age_str;
 757 }
 758
 759 # convert file mode in octal to symbolic file mode string
 760 sub mode_str {
 761         my $mode = oct shift;
 762
 763         if (S_ISDIR($mode & S_IFMT)) {
 764                 return 'drwxr-xr-x';
 765         } elsif (S_ISLNK($mode)) {
 766                 return 'lrwxrwxrwx';
 767         } elsif (S_ISREG($mode)) {
 768                 # git cares only about the executable bit
 769                 if ($mode & S_IXUSR) {
 770                         return '-rwxr-xr-x';
 771                 } else {
 772                         return '-rw-r--r--';
 773                 };
 774         } else {
 775                 return '----------';
 776         }
 777 }
 778
 779 # convert file mode in octal to file type string
 780 sub file_type {
 781         my $mode = shift;
 782
 783         if ($mode !~ m/^[0-7]+$/) {
 784                 return $mode;
 785         } else {
 786                 $mode = oct $mode;
 787         }
 788
 789         if (S_ISDIR($mode & S_IFMT)) {
 790                 return "directory";
 791         } elsif (S_ISLNK($mode)) {
 792                 return "symlink";
 793         } elsif (S_ISREG($mode)) {
 794                 return "file";
 795         } else {
 796                 return "unknown";
 797         }
 798 }
 799
 800 # convert file mode in octal to file type description string
 801 sub file_type_long {
 802         my $mode = shift;
 803
 804         if ($mode !~ m/^[0-7]+$/) {
 805                 return $mode;
 806         } else {
 807                 $mode = oct $mode;
 808         }
 809
 810         if (S_ISDIR($mode & S_IFMT)) {
 811                 return "directory";
 812         } elsif (S_ISLNK($mode)) {
 813                 return "symlink";
 814         } elsif (S_ISREG($mode)) {
 815                 if ($mode & S_IXUSR) {
 816                         return "executable";
 817                 } else {
 818                         return "file";
 819                 };
 820         } else {
 821                 return "unknown";
 822         }
 823 }
 824
 825
 826 ## ----------------------------------------------------------------------
 827 ## functions returning short HTML fragments, or transforming HTML fragments
 828 ## which don't beling to other sections
 829
 830 # format line of commit message.
 831 sub format_log_line_html {
 832         my $line = shift;
 833
 834         $line = esc_html($line, -nbsp=>1);
 835         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 836                 my $hash_text = $1;
 837                 my $link =
 838                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 839                                 -class => "text"}, $hash_text);
 840                 $line =~ s/$hash_text/$link/;
 841         }
 842         return $line;
 843 }
 844
 845 # format marker of refs pointing to given object
 846 sub format_ref_marker {
 847         my ($refs, $id) = @_;
 848         my $markers = '';
 849
 850         if (defined $refs->{$id}) {
 851                 foreach my $ref (@{$refs->{$id}}) {
 852                         my ($type, $name) = qw();
 853                         # e.g. tags/v2.6.11 or heads/next
 854                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 855                                 $type = $1;
 856                                 $name = $2;
 857                         } else {
 858                                 $type = "ref";
 859                                 $name = $ref;
 860                         }
 861
 862                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 863                                     esc_html($name) . "</span>";
 864                 }
 865         }
 866
 867         if ($markers) {
 868                 return ' <span class="refs">'. $markers . '</span>';
 869         } else {
 870                 return "";
 871         }
 872 }
 873
 874 # format, perhaps shortened and with markers, title line
 875 sub format_subject_html {
 876         my ($long, $short, $href, $extra) = @_;
 877         $extra = '' unless defined($extra);
 878
 879         if (length($short) < length($long)) {
 880                 return $cgi->a({-href => $href, -class => "list subject",
 881                                 -title => to_utf8($long)},
 882                        esc_html($short) . $extra);
 883         } else {
 884                 return $cgi->a({-href => $href, -class => "list subject"},
 885                        esc_html($long)  . $extra);
 886         }
 887 }
 888
 889 # format patch (diff) line (rather not to be used for diff headers)
 890 sub format_diff_line {
 891         my $line = shift;
 892         my ($from, $to) = @_;
 893         my $char = substr($line, 0, 1);
 894         my $diff_class = "";
 895
 896         chomp $line;
 897
 898         if ($char eq '+') {
 899                 $diff_class = " add";
 900         } elsif ($char eq "-") {
 901                 $diff_class = " rem";
 902         } elsif ($char eq "@") {
 903                 $diff_class = " chunk_header";
 904         } elsif ($char eq "\\") {
 905                 $diff_class = " incomplete";
 906         }
 907         $line = untabify($line);
 908         if ($from && $to && $line =~ m/^\@{2} /) {
 909                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 910                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 911
 912                 $from_lines = 0 unless defined $from_lines;
 913                 $to_lines   = 0 unless defined $to_lines;
 914
 915                 if ($from->{'href'}) {
 916                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 917                                              -class=>"list"}, $from_text);
 918                 }
 919                 if ($to->{'href'}) {
 920                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 921                                              -class=>"list"}, $to_text);
 922                 }
 923                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 924                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 925                 return "<div class=\"diff$diff_class\">$line</div>\n";
 926         }
 927         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 928 }
 929
 930 ## ----------------------------------------------------------------------
 931 ## git utility subroutines, invoking git commands
 932
 933 # returns path to the core git executable and the --git-dir parameter as list
 934 sub git_cmd {
 935         return $GIT, '--git-dir='.$git_dir;
 936 }
 937
 938 # returns path to the core git executable and the --git-dir parameter as string
 939 sub git_cmd_str {
 940         return join(' ', git_cmd());
 941 }
 942
 943 # get HEAD ref of given project as hash
 944 sub git_get_head_hash {
 945         my $project = shift;
 946         my $o_git_dir = $git_dir;
 947         my $retval = undef;
 948         $git_dir = "$projectroot/$project";
 949         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 950                 my $head = <$fd>;
 951                 close $fd;
 952                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 953                         $retval = $1;
 954                 }
 955         }
 956         if (defined $o_git_dir) {
 957                 $git_dir = $o_git_dir;
 958         }
 959         return $retval;
 960 }
 961
 962 # get type of given object
 963 sub git_get_type {
 964         my $hash = shift;
 965
 966         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 967         my $type = <$fd>;
 968         close $fd or return;
 969         chomp $type;
 970         return $type;
 971 }
 972
 973 sub git_get_project_config {
 974         my ($key, $type) = @_;
 975
 976         return unless ($key);
 977         $key =~ s/^gitweb\.//;
 978         return if ($key =~ m/\W/);
 979
 980         my @x = (git_cmd(), 'repo-config');
 981         if (defined $type) { push @x, $type; }
 982         push @x, "--get";
 983         push @x, "gitweb.$key";
 984         my $val = qx(@x);
 985         chomp $val;
 986         return ($val);
 987 }
 988
 989 # get hash of given path at given ref
 990 sub git_get_hash_by_path {
 991         my $base = shift;
 992         my $path = shift || return undef;
 993         my $type = shift;
 994
 995         $path =~ s,/+$,,;
 996
 997         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 998                 or die_error(undef, "Open git-ls-tree failed");
 999         my $line = <$fd>;
1000         close $fd or return undef;
1001
1002         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1003         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1004         if (defined $type && $type ne $2) {
1005                 # type doesn't match
1006                 return undef;
1007         }
1008         return $3;
1009 }
1010
1011 ## ......................................................................
1012 ## git utility functions, directly accessing git repository
1013
1014 sub git_get_project_description {
1015         my $path = shift;
1016
1017         open my $fd, "$projectroot/$path/description" or return undef;
1018         my $descr = <$fd>;
1019         close $fd;
1020         chomp $descr;
1021         return $descr;
1022 }
1023
1024 sub git_get_project_url_list {
1025         my $path = shift;
1026
1027         open my $fd, "$projectroot/$path/cloneurl" or return;
1028         my @git_project_url_list = map { chomp; $_ } <$fd>;
1029         close $fd;
1030
1031         return wantarray ? @git_project_url_list : \@git_project_url_list;
1032 }
1033
1034 sub git_get_projects_list {
1035         my ($filter) = @_;
1036         my @list;
1037
1038         $filter ||= '';
1039         $filter =~ s/\.git$//;
1040
1041         if (-d $projects_list) {
1042                 # search in directory
1043                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1044                 # remove the trailing "/"
1045                 $dir =~ s!/+$!!;
1046                 my $pfxlen = length("$dir");
1047
1048                 my ($check_forks) = gitweb_check_feature('forks');
1049
1050                 File::Find::find({
1051                         follow_fast => 1, # follow symbolic links
1052                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1053                         wanted => sub {
1054                                 # skip project-list toplevel, if we get it.
1055                                 return if (m!^[/.]$!);
1056                                 # only directories can be git repositories
1057                                 return unless (-d $_);
1058
1059                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1060                                 # we check related file in $projectroot
1061                                 if ($check_forks and $subdir =~ m#/.#) {
1062                                         $File::Find::prune = 1;
1063                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1064                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1065                                         $File::Find::prune = 1;
1066                                 }
1067                         },
1068                 }, "$dir");
1069
1070         } elsif (-f $projects_list) {
1071                 # read from file(url-encoded):
1072                 # 'git%2Fgit.git Linus+Torvalds'
1073                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1074                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1075                 open my ($fd), $projects_list or return;
1076                 while (my $line = <$fd>) {
1077                         chomp $line;
1078                         my ($path, $owner) = split ' ', $line;
1079                         $path = unescape($path);
1080                         $owner = unescape($owner);
1081                         if (!defined $path) {
1082                                 next;
1083                         }
1084                         if ($filter ne '') {
1085                                 # looking for forks;
1086                                 my $pfx = substr($path, 0, length($filter));
1087                                 if ($pfx ne $filter) {
1088                                         next;
1089                                 }
1090                                 my $sfx = substr($path, length($filter));
1091                                 if ($sfx !~ /^\/.*\.git$/) {
1092                                         next;
1093                                 }
1094                         }
1095                         if (check_export_ok("$projectroot/$path")) {
1096                                 my $pr = {
1097                                         path => $path,
1098                                         owner => to_utf8($owner),
1099                                 };
1100                                 push @list, $pr
1101                         }
1102                 }
1103                 close $fd;
1104         }
1105         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1106         return @list;
1107 }
1108
1109 sub git_get_project_owner {
1110         my $project = shift;
1111         my $owner;
1112
1113         return undef unless $project;
1114
1115         # read from file (url-encoded):
1116         # 'git%2Fgit.git Linus+Torvalds'
1117         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1118         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1119         if (-f $projects_list) {
1120                 open (my $fd , $projects_list);
1121                 while (my $line = <$fd>) {
1122                         chomp $line;
1123                         my ($pr, $ow) = split ' ', $line;
1124                         $pr = unescape($pr);
1125                         $ow = unescape($ow);
1126                         if ($pr eq $project) {
1127                                 $owner = to_utf8($ow);
1128                                 last;
1129                         }
1130                 }
1131                 close $fd;
1132         }
1133         if (!defined $owner) {
1134                 $owner = get_file_owner("$projectroot/$project");
1135         }
1136
1137         return $owner;
1138 }
1139
1140 sub git_get_last_activity {
1141         my ($path) = @_;
1142         my $fd;
1143
1144         $git_dir = "$projectroot/$path";
1145         open($fd, "-|", git_cmd(), 'for-each-ref',
1146              '--format=%(committer)',
1147              '--sort=-committerdate',
1148              '--count=1',
1149              'refs/heads') or return;
1150         my $most_recent = <$fd>;
1151         close $fd or return;
1152         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1153                 my $timestamp = $1;
1154                 my $age = time - $timestamp;
1155                 return ($age, age_string($age));
1156         }
1157 }
1158
1159 sub git_get_references {
1160         my $type = shift || "";
1161         my %refs;
1162         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1163         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1164         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1165                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1166                 or return;
1167
1168         while (my $line = <$fd>) {
1169                 chomp $line;
1170                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1171                         if (defined $refs{$1}) {
1172                                 push @{$refs{$1}}, $2;
1173                         } else {
1174                                 $refs{$1} = [ $2 ];
1175                         }
1176                 }
1177         }
1178         close $fd or return;
1179         return \%refs;
1180 }
1181
1182 sub git_get_rev_name_tags {
1183         my $hash = shift || return undef;
1184
1185         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1186                 or return;
1187         my $name_rev = <$fd>;
1188         close $fd;
1189
1190         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1191                 return $1;
1192         } else {
1193                 # catches also '$hash undefined' output
1194                 return undef;
1195         }
1196 }
1197
1198 ## ----------------------------------------------------------------------
1199 ## parse to hash functions
1200
1201 sub parse_date {
1202         my $epoch = shift;
1203         my $tz = shift || "-0000";
1204
1205         my %date;
1206         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1207         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1208         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1209         $date{'hour'} = $hour;
1210         $date{'minute'} = $min;
1211         $date{'mday'} = $mday;
1212         $date{'day'} = $days[$wday];
1213         $date{'month'} = $months[$mon];
1214         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1215                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1216         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1217                              $mday, $months[$mon], $hour ,$min;
1218         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1219                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1220
1221         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1222         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1223         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1224         $date{'hour_local'} = $hour;
1225         $date{'minute_local'} = $min;
1226         $date{'tz_local'} = $tz;
1227         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1228                                   1900+$year, $mon+1, $mday,
1229                                   $hour, $min, $sec, $tz);
1230         return %date;
1231 }
1232
1233 sub parse_tag {
1234         my $tag_id = shift;
1235         my %tag;
1236         my @comment;
1237
1238         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1239         $tag{'id'} = $tag_id;
1240         while (my $line = <$fd>) {
1241                 chomp $line;
1242                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1243                         $tag{'object'} = $1;
1244                 } elsif ($line =~ m/^type (.+)$/) {
1245                         $tag{'type'} = $1;
1246                 } elsif ($line =~ m/^tag (.+)$/) {
1247                         $tag{'name'} = $1;
1248                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1249                         $tag{'author'} = $1;
1250                         $tag{'epoch'} = $2;
1251                         $tag{'tz'} = $3;
1252                 } elsif ($line =~ m/--BEGIN/) {
1253                         push @comment, $line;
1254                         last;
1255                 } elsif ($line eq "") {
1256                         last;
1257                 }
1258         }
1259         push @comment, <$fd>;
1260         $tag{'comment'} = \@comment;
1261         close $fd or return;
1262         if (!defined $tag{'name'}) {
1263                 return
1264         };
1265         return %tag
1266 }
1267
1268 sub parse_commit {
1269         my $commit_id = shift;
1270         my $commit_text = shift;
1271
1272         my @commit_lines;
1273         my %co;
1274
1275         if (defined $commit_text) {
1276                 @commit_lines = @$commit_text;
1277         } else {
1278                 local $/ = "\0";
1279                 open my $fd, "-|", git_cmd(), "rev-list",
1280                         "--header", "--parents", "--max-count=1",
1281                         $commit_id, "--"
1282                         or return;
1283                 @commit_lines = split '\n', <$fd>;
1284                 close $fd or return;
1285                 pop @commit_lines;
1286         }
1287         my $header = shift @commit_lines;
1288         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1289                 return;
1290         }
1291         ($co{'id'}, my @parents) = split ' ', $header;
1292         $co{'parents'} = \@parents;
1293         $co{'parent'} = $parents[0];
1294         while (my $line = shift @commit_lines) {
1295                 last if $line eq "\n";
1296                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1297                         $co{'tree'} = $1;
1298                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1299                         $co{'author'} = $1;
1300                         $co{'author_epoch'} = $2;
1301                         $co{'author_tz'} = $3;
1302                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1303                                 $co{'author_name'}  = $1;
1304                                 $co{'author_email'} = $2;
1305                         } else {
1306                                 $co{'author_name'} = $co{'author'};
1307                         }
1308                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1309                         $co{'committer'} = $1;
1310                         $co{'committer_epoch'} = $2;
1311                         $co{'committer_tz'} = $3;
1312                         $co{'committer_name'} = $co{'committer'};
1313                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1314                                 $co{'committer_name'}  = $1;
1315                                 $co{'committer_email'} = $2;
1316                         } else {
1317                                 $co{'committer_name'} = $co{'committer'};
1318                         }
1319                 }
1320         }
1321         if (!defined $co{'tree'}) {
1322                 return;
1323         };
1324
1325         foreach my $title (@commit_lines) {
1326                 $title =~ s/^    //;
1327                 if ($title ne "") {
1328                         $co{'title'} = chop_str($title, 80, 5);
1329                         # remove leading stuff of merges to make the interesting part visible
1330                         if (length($title) > 50) {
1331                                 $title =~ s/^Automatic //;
1332                                 $title =~ s/^merge (of|with) /Merge ... /i;
1333                                 if (length($title) > 50) {
1334                                         $title =~ s/(http|rsync):\/\///;
1335                                 }
1336                                 if (length($title) > 50) {
1337                                         $title =~ s/(master|www|rsync)\.//;
1338                                 }
1339                                 if (length($title) > 50) {
1340                                         $title =~ s/kernel.org:?//;
1341                                 }
1342                                 if (length($title) > 50) {
1343                                         $title =~ s/\/pub\/scm//;
1344                                 }
1345                         }
1346                         $co{'title_short'} = chop_str($title, 50, 5);
1347                         last;
1348                 }
1349         }
1350         if ($co{'title'} eq "") {
1351                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1352         }
1353         # remove added spaces
1354         foreach my $line (@commit_lines) {
1355                 $line =~ s/^    //;
1356         }
1357         $co{'comment'} = \@commit_lines;
1358
1359         my $age = time - $co{'committer_epoch'};
1360         $co{'age'} = $age;
1361         $co{'age_string'} = age_string($age);
1362         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1363         if ($age > 60*60*24*7*2) {
1364                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1365                 $co{'age_string_age'} = $co{'age_string'};
1366         } else {
1367                 $co{'age_string_date'} = $co{'age_string'};
1368                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1369         }
1370         return %co;
1371 }
1372
1373 # parse ref from ref_file, given by ref_id, with given type
1374 sub parse_ref {
1375         my $ref_file = shift;
1376         my $ref_id = shift;
1377         my $type = shift || git_get_type($ref_id);
1378         my %ref_item;
1379
1380         $ref_item{'type'} = $type;
1381         $ref_item{'id'} = $ref_id;
1382         $ref_item{'epoch'} = 0;
1383         $ref_item{'age'} = "unknown";
1384         if ($type eq "tag") {
1385                 my %tag = parse_tag($ref_id);
1386                 $ref_item{'comment'} = $tag{'comment'};
1387                 if ($tag{'type'} eq "commit") {
1388                         my %co = parse_commit($tag{'object'});
1389                         $ref_item{'epoch'} = $co{'committer_epoch'};
1390                         $ref_item{'age'} = $co{'age_string'};
1391                 } elsif (defined($tag{'epoch'})) {
1392                         my $age = time - $tag{'epoch'};
1393                         $ref_item{'epoch'} = $tag{'epoch'};
1394                         $ref_item{'age'} = age_string($age);
1395                 }
1396                 $ref_item{'reftype'} = $tag{'type'};
1397                 $ref_item{'name'} = $tag{'name'};
1398                 $ref_item{'refid'} = $tag{'object'};
1399         } elsif ($type eq "commit"){
1400                 my %co = parse_commit($ref_id);
1401                 $ref_item{'reftype'} = "commit";
1402                 $ref_item{'name'} = $ref_file;
1403                 $ref_item{'title'} = $co{'title'};
1404                 $ref_item{'refid'} = $ref_id;
1405                 $ref_item{'epoch'} = $co{'committer_epoch'};
1406                 $ref_item{'age'} = $co{'age_string'};
1407         } else {
1408                 $ref_item{'reftype'} = $type;
1409                 $ref_item{'name'} = $ref_file;
1410                 $ref_item{'refid'} = $ref_id;
1411         }
1412
1413         return %ref_item;
1414 }
1415
1416 # parse line of git-diff-tree "raw" output
1417 sub parse_difftree_raw_line {
1418         my $line = shift;
1419         my %res;
1420
1421         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1422         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1423         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1424                 $res{'from_mode'} = $1;
1425                 $res{'to_mode'} = $2;
1426                 $res{'from_id'} = $3;
1427                 $res{'to_id'} = $4;
1428                 $res{'status'} = $5;
1429                 $res{'similarity'} = $6;
1430                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1431                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1432                 } else {
1433                         $res{'file'} = unquote($7);
1434                 }
1435         }
1436         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1437         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1438                 $res{'commit'} = $1;
1439         }
1440
1441         return wantarray ? %res : \%res;
1442 }
1443
1444 # parse line of git-ls-tree output
1445 sub parse_ls_tree_line ($;%) {
1446         my $line = shift;
1447         my %opts = @_;
1448         my %res;
1449
1450         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1451         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1452
1453         $res{'mode'} = $1;
1454         $res{'type'} = $2;
1455         $res{'hash'} = $3;
1456         if ($opts{'-z'}) {
1457                 $res{'name'} = $4;
1458         } else {
1459                 $res{'name'} = unquote($4);
1460         }
1461
1462         return wantarray ? %res : \%res;
1463 }
1464
1465 ## ......................................................................
1466 ## parse to array of hashes functions
1467
1468 sub git_get_heads_list {
1469         my $limit = shift;
1470         my @headslist;
1471
1472         open my $fd, '-|', git_cmd(), 'for-each-ref',
1473                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1474                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1475                 'refs/heads'
1476                 or return;
1477         while (my $line = <$fd>) {
1478                 my %ref_item;
1479
1480                 chomp $line;
1481                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1482                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1483                 my ($committer, $epoch, $tz) =
1484                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1485                 $name =~ s!^refs/heads/!!;
1486
1487                 $ref_item{'name'}  = $name;
1488                 $ref_item{'id'}    = $hash;
1489                 $ref_item{'title'} = $title || '(no commit message)';
1490                 $ref_item{'epoch'} = $epoch;
1491                 if ($epoch) {
1492                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1493                 } else {
1494                         $ref_item{'age'} = "unknown";
1495                 }
1496
1497                 push @headslist, \%ref_item;
1498         }
1499         close $fd;
1500
1501         return wantarray ? @headslist : \@headslist;
1502 }
1503
1504 sub git_get_tags_list {
1505         my $limit = shift;
1506         my @tagslist;
1507
1508         open my $fd, '-|', git_cmd(), 'for-each-ref',
1509                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1510                 '--format=%(objectname) %(objecttype) %(refname) '.
1511                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1512                 'refs/tags'
1513                 or return;
1514         while (my $line = <$fd>) {
1515                 my %ref_item;
1516
1517                 chomp $line;
1518                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1519                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1520                 my ($creator, $epoch, $tz) =
1521                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1522                 $name =~ s!^refs/tags/!!;
1523
1524                 $ref_item{'type'} = $type;
1525                 $ref_item{'id'} = $id;
1526                 $ref_item{'name'} = $name;
1527                 if ($type eq "tag") {
1528                         $ref_item{'subject'} = $title;
1529                         $ref_item{'reftype'} = $reftype;
1530                         $ref_item{'refid'}   = $refid;
1531                 } else {
1532                         $ref_item{'reftype'} = $type;
1533                         $ref_item{'refid'}   = $id;
1534                 }
1535
1536                 if ($type eq "tag" || $type eq "commit") {
1537                         $ref_item{'epoch'} = $epoch;
1538                         if ($epoch) {
1539                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1540                         } else {
1541                                 $ref_item{'age'} = "unknown";
1542                         }
1543                 }
1544
1545                 push @tagslist, \%ref_item;
1546         }
1547         close $fd;
1548
1549         return wantarray ? @tagslist : \@tagslist;
1550 }
1551
1552 ## ----------------------------------------------------------------------
1553 ## filesystem-related functions
1554
1555 sub get_file_owner {
1556         my $path = shift;
1557
1558         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1559         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1560         if (!defined $gcos) {
1561                 return undef;
1562         }
1563         my $owner = $gcos;
1564         $owner =~ s/[,;].*$//;
1565         return to_utf8($owner);
1566 }
1567
1568 ## ......................................................................
1569 ## mimetype related functions
1570
1571 sub mimetype_guess_file {
1572         my $filename = shift;
1573         my $mimemap = shift;
1574         -r $mimemap or return undef;
1575
1576         my %mimemap;
1577         open(MIME, $mimemap) or return undef;
1578         while (<MIME>) {
1579                 next if m/^#/; # skip comments
1580                 my ($mime, $exts) = split(/\t+/);
1581                 if (defined $exts) {
1582                         my @exts = split(/\s+/, $exts);
1583                         foreach my $ext (@exts) {
1584                                 $mimemap{$ext} = $mime;
1585                         }
1586                 }
1587         }
1588         close(MIME);
1589
1590         $filename =~ /\.([^.]*)$/;
1591         return $mimemap{$1};
1592 }
1593
1594 sub mimetype_guess {
1595         my $filename = shift;
1596         my $mime;
1597         $filename =~ /\./ or return undef;
1598
1599         if ($mimetypes_file) {
1600                 my $file = $mimetypes_file;
1601                 if ($file !~ m!^/!) { # if it is relative path
1602                         # it is relative to project
1603                         $file = "$projectroot/$project/$file";
1604                 }
1605                 $mime = mimetype_guess_file($filename, $file);
1606         }
1607         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1608         return $mime;
1609 }
1610
1611 sub blob_mimetype {
1612         my $fd = shift;
1613         my $filename = shift;
1614
1615         if ($filename) {
1616                 my $mime = mimetype_guess($filename);
1617                 $mime and return $mime;
1618         }
1619
1620         # just in case
1621         return $default_blob_plain_mimetype unless $fd;
1622
1623         if (-T $fd) {
1624                 return 'text/plain' .
1625                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1626         } elsif (! $filename) {
1627                 return 'application/octet-stream';
1628         } elsif ($filename =~ m/\.png$/i) {
1629                 return 'image/png';
1630         } elsif ($filename =~ m/\.gif$/i) {
1631                 return 'image/gif';
1632         } elsif ($filename =~ m/\.jpe?g$/i) {
1633                 return 'image/jpeg';
1634         } else {
1635                 return 'application/octet-stream';
1636         }
1637 }
1638
1639 ## ======================================================================
1640 ## functions printing HTML: header, footer, error page
1641
1642 sub git_header_html {
1643         my $status = shift || "200 OK";
1644         my $expires = shift;
1645
1646         my $title = "$site_name";
1647         if (defined $project) {
1648                 $title .= " - $project";
1649                 if (defined $action) {
1650                         $title .= "/$action";
1651                         if (defined $file_name) {
1652                                 $title .= " - " . esc_path($file_name);
1653                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1654                                         $title .= "/";
1655                                 }
1656                         }
1657                 }
1658         }
1659         my $content_type;
1660         # require explicit support from the UA if we are to send the page as
1661         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1662         # we have to do this because MSIE sometimes globs '*/*', pretending to
1663         # support xhtml+xml but choking when it gets what it asked for.
1664         if (defined $cgi->http('HTTP_ACCEPT') &&
1665             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1666             $cgi->Accept('application/xhtml+xml') != 0) {
1667                 $content_type = 'application/xhtml+xml';
1668         } else {
1669                 $content_type = 'text/html';
1670         }
1671         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1672                            -status=> $status, -expires => $expires);
1673         print <<EOF;
1674 <?xml version="1.0" encoding="utf-8"?>
1675 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1676 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1677 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1678 <!-- git core binaries version $git_version -->
1679 <head>
1680 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1681 <meta name="generator" content="gitweb/$version git/$git_version"/>
1682 <meta name="robots" content="index, nofollow"/>
1683 <title>$title</title>
1684 EOF
1685 # print out each stylesheet that exist
1686         if (defined $stylesheet) {
1687 #provides backwards capability for those people who define style sheet in a config file
1688                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1689         } else {
1690                 foreach my $stylesheet (@stylesheets) {
1691                         next unless $stylesheet;
1692                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1693                 }
1694         }
1695         if (defined $project) {
1696                 printf('<link rel="alternate" title="%s log RSS feed" '.
1697                        'href="%s" type="application/rss+xml" />'."\n",
1698                        esc_param($project), href(action=>"rss"));
1699                 printf('<link rel="alternate" title="%s log Atom feed" '.
1700                        'href="%s" type="application/atom+xml" />'."\n",
1701                        esc_param($project), href(action=>"atom"));
1702         } else {
1703                 printf('<link rel="alternate" title="%s projects list" '.
1704                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1705                        $site_name, href(project=>undef, action=>"project_index"));
1706                 printf('<link rel="alternate" title="%s projects feeds" '.
1707                        'href="%s" type="text/x-opml"/>'."\n",
1708                        $site_name, href(project=>undef, action=>"opml"));
1709         }
1710         if (defined $favicon) {
1711                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1712         }
1713
1714         print "</head>\n" .
1715               "<body>\n";
1716
1717         if (-f $site_header) {
1718                 open (my $fd, $site_header);
1719                 print <$fd>;
1720                 close $fd;
1721         }
1722
1723         print "<div class=\"page_header\">\n" .
1724               $cgi->a({-href => esc_url($logo_url),
1725                        -title => $logo_label},
1726                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1727         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1728         if (defined $project) {
1729                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1730                 if (defined $action) {
1731                         print " / $action";
1732                 }
1733                 print "\n";
1734                 if (!defined $searchtext) {
1735                         $searchtext = "";
1736                 }
1737                 my $search_hash;
1738                 if (defined $hash_base) {
1739                         $search_hash = $hash_base;
1740                 } elsif (defined $hash) {
1741                         $search_hash = $hash;
1742                 } else {
1743                         $search_hash = "HEAD";
1744                 }
1745                 $cgi->param("a", "search");
1746                 $cgi->param("h", $search_hash);
1747                 $cgi->param("p", $project);
1748                 print $cgi->startform(-method => "get", -action => $my_uri) .
1749                       "<div class=\"search\">\n" .
1750                       $cgi->hidden(-name => "p") . "\n" .
1751                       $cgi->hidden(-name => "a") . "\n" .
1752                       $cgi->hidden(-name => "h") . "\n" .
1753                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1754                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1755                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1756                       " search:\n",
1757                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1758                       "</div>" .
1759                       $cgi->end_form() . "\n";
1760         }
1761         print "</div>\n";
1762 }
1763
1764 sub git_footer_html {
1765         print "<div class=\"page_footer\">\n";
1766         if (defined $project) {
1767                 my $descr = git_get_project_description($project);
1768                 if (defined $descr) {
1769                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1770                 }
1771                 print $cgi->a({-href => href(action=>"rss"),
1772                               -class => "rss_logo"}, "RSS") . " ";
1773                 print $cgi->a({-href => href(action=>"atom"),
1774                               -class => "rss_logo"}, "Atom") . "\n";
1775         } else {
1776                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1777                               -class => "rss_logo"}, "OPML") . " ";
1778                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1779                               -class => "rss_logo"}, "TXT") . "\n";
1780         }
1781         print "</div>\n" ;
1782
1783         if (-f $site_footer) {
1784                 open (my $fd, $site_footer);
1785                 print <$fd>;
1786                 close $fd;
1787         }
1788
1789         print "</body>\n" .
1790               "</html>";
1791 }
1792
1793 sub die_error {
1794         my $status = shift || "403 Forbidden";
1795         my $error = shift || "Malformed query, file missing or permission denied";
1796
1797         git_header_html($status);
1798         print <<EOF;
1799 <div class="page_body">
1800 <br /><br />
1801 $status - $error
1802 <br />
1803 </div>
1804 EOF
1805         git_footer_html();
1806         exit;
1807 }
1808
1809 ## ----------------------------------------------------------------------
1810 ## functions printing or outputting HTML: navigation
1811
1812 sub git_print_page_nav {
1813         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1814         $extra = '' if !defined $extra; # pager or formats
1815
1816         my @navs = qw(summary shortlog log commit commitdiff tree);
1817         if ($suppress) {
1818                 @navs = grep { $_ ne $suppress } @navs;
1819         }
1820
1821         my %arg = map { $_ => {action=>$_} } @navs;
1822         if (defined $head) {
1823                 for (qw(commit commitdiff)) {
1824                         $arg{$_}{hash} = $head;
1825                 }
1826                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1827                         for (qw(shortlog log)) {
1828                                 $arg{$_}{hash} = $head;
1829                         }
1830                 }
1831         }
1832         $arg{tree}{hash} = $treehead if defined $treehead;
1833         $arg{tree}{hash_base} = $treebase if defined $treebase;
1834
1835         print "<div class=\"page_nav\">\n" .
1836                 (join " | ",
1837                  map { $_ eq $current ?
1838                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1839                  } @navs);
1840         print "<br/>\n$extra<br/>\n" .
1841               "</div>\n";
1842 }
1843
1844 sub format_paging_nav {
1845         my ($action, $hash, $head, $page, $nrevs) = @_;
1846         my $paging_nav;
1847
1848
1849         if ($hash ne $head || $page) {
1850                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1851         } else {
1852                 $paging_nav .= "HEAD";
1853         }
1854
1855         if ($page > 0) {
1856                 $paging_nav .= " &sdot; " .
1857                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1858                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1859         } else {
1860                 $paging_nav .= " &sdot; prev";
1861         }
1862
1863         if ($nrevs >= (100 * ($page+1)-1)) {
1864                 $paging_nav .= " &sdot; " .
1865                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1866                                  -accesskey => "n", -title => "Alt-n"}, "next");
1867         } else {
1868                 $paging_nav .= " &sdot; next";
1869         }
1870
1871         return $paging_nav;
1872 }
1873
1874 ## ......................................................................
1875 ## functions printing or outputting HTML: div
1876
1877 sub git_print_header_div {
1878         my ($action, $title, $hash, $hash_base) = @_;
1879         my %args = ();
1880
1881         $args{action} = $action;
1882         $args{hash} = $hash if $hash;
1883         $args{hash_base} = $hash_base if $hash_base;
1884
1885         print "<div class=\"header\">\n" .
1886               $cgi->a({-href => href(%args), -class => "title"},
1887               $title ? $title : $action) .
1888               "\n</div>\n";
1889 }
1890
1891 #sub git_print_authorship (\%) {
1892 sub git_print_authorship {
1893         my $co = shift;
1894
1895         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1896         print "<div class=\"author_date\">" .
1897               esc_html($co->{'author_name'}) .
1898               " [$ad{'rfc2822'}";
1899         if ($ad{'hour_local'} < 6) {
1900                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1901                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1902         } else {
1903                 printf(" (%02d:%02d %s)",
1904                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1905         }
1906         print "]</div>\n";
1907 }
1908
1909 sub git_print_page_path {
1910         my $name = shift;
1911         my $type = shift;
1912         my $hb = shift;
1913
1914
1915         print "<div class=\"page_path\">";
1916         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1917                       -title => 'tree root'}, "[$project]");
1918         print " / ";
1919         if (defined $name) {
1920                 my @dirname = split '/', $name;
1921                 my $basename = pop @dirname;
1922                 my $fullname = '';
1923
1924                 foreach my $dir (@dirname) {
1925                         $fullname .= ($fullname ? '/' : '') . $dir;
1926                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1927                                                      hash_base=>$hb),
1928                                       -title => esc_html($fullname)}, esc_path($dir));
1929                         print " / ";
1930                 }
1931                 if (defined $type && $type eq 'blob') {
1932                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1933                                                      hash_base=>$hb),
1934                                       -title => esc_html($name)}, esc_path($basename));
1935                 } elsif (defined $type && $type eq 'tree') {
1936                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1937                                                      hash_base=>$hb),
1938                                       -title => esc_html($name)}, esc_path($basename));
1939                         print " / ";
1940                 } else {
1941                         print esc_path($basename);
1942                 }
1943         }
1944         print "<br/></div>\n";
1945 }
1946
1947 # sub git_print_log (\@;%) {
1948 sub git_print_log ($;%) {
1949         my $log = shift;
1950         my %opts = @_;
1951
1952         if ($opts{'-remove_title'}) {
1953                 # remove title, i.e. first line of log
1954                 shift @$log;
1955         }
1956         # remove leading empty lines
1957         while (defined $log->[0] && $log->[0] eq "") {
1958                 shift @$log;
1959         }
1960
1961         # print log
1962         my $signoff = 0;
1963         my $empty = 0;
1964         foreach my $line (@$log) {
1965                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1966                         $signoff = 1;
1967                         $empty = 0;
1968                         if (! $opts{'-remove_signoff'}) {
1969                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1970                                 next;
1971                         } else {
1972                                 # remove signoff lines
1973                                 next;
1974                         }
1975                 } else {
1976                         $signoff = 0;
1977                 }
1978
1979                 # print only one empty line
1980                 # do not print empty line after signoff
1981                 if ($line eq "") {
1982                         next if ($empty || $signoff);
1983                         $empty = 1;
1984                 } else {
1985                         $empty = 0;
1986                 }
1987
1988                 print format_log_line_html($line) . "<br/>\n";
1989         }
1990
1991         if ($opts{'-final_empty_line'}) {
1992                 # end with single empty line
1993                 print "<br/>\n" unless $empty;
1994         }
1995 }
1996
1997 # return link target (what link points to)
1998 sub git_get_link_target {
1999         my $hash = shift;
2000         my $link_target;
2001
2002         # read link
2003         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2004                 or return;
2005         {
2006                 local $/;
2007                 $link_target = <$fd>;
2008         }
2009         close $fd
2010                 or return;
2011
2012         return $link_target;
2013 }
2014
2015 # given link target, and the directory (basedir) the link is in,
2016 # return target of link relative to top directory (top tree);
2017 # return undef if it is not possible (including absolute links).
2018 sub normalize_link_target {
2019         my ($link_target, $basedir, $hash_base) = @_;
2020
2021         # we can normalize symlink target only if $hash_base is provided
2022         return unless $hash_base;
2023
2024         # absolute symlinks (beginning with '/') cannot be normalized
2025         return if (substr($link_target, 0, 1) eq '/');
2026
2027         # normalize link target to path from top (root) tree (dir)
2028         my $path;
2029         if ($basedir) {
2030                 $path = $basedir . '/' . $link_target;
2031         } else {
2032                 # we are in top (root) tree (dir)
2033                 $path = $link_target;
2034         }
2035
2036         # remove //, /./, and /../
2037         my @path_parts;
2038         foreach my $part (split('/', $path)) {
2039                 # discard '.' and ''
2040                 next if (!$part || $part eq '.');
2041                 # handle '..'
2042                 if ($part eq '..') {
2043                         if (@path_parts) {
2044                                 pop @path_parts;
2045                         } else {
2046                                 # link leads outside repository (outside top dir)
2047                                 return;
2048                         }
2049                 } else {
2050                         push @path_parts, $part;
2051                 }
2052         }
2053         $path = join('/', @path_parts);
2054
2055         return $path;
2056 }
2057
2058 # print tree entry (row of git_tree), but without encompassing <tr> element
2059 sub git_print_tree_entry {
2060         my ($t, $basedir, $hash_base, $have_blame) = @_;
2061
2062         my %base_key = ();
2063         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2064
2065         # The format of a table row is: mode list link.  Where mode is
2066         # the mode of the entry, list is the name of the entry, an href,
2067         # and link is the action links of the entry.
2068
2069         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2070         if ($t->{'type'} eq "blob") {
2071                 print "<td class=\"list\">" .
2072                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2073                                                file_name=>"$basedir$t->{'name'}", %base_key),
2074                                 -class => "list"}, esc_path($t->{'name'}));
2075                 if (S_ISLNK(oct $t->{'mode'})) {
2076                         my $link_target = git_get_link_target($t->{'hash'});
2077                         if ($link_target) {
2078                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2079                                 if (defined $norm_target) {
2080                                         print " -> " .
2081                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2082                                                                      file_name=>$norm_target),
2083                                                        -title => $norm_target}, esc_path($link_target));
2084                                 } else {
2085                                         print " -> " . esc_path($link_target);
2086                                 }
2087                         }
2088                 }
2089                 print "</td>\n";
2090                 print "<td class=\"link\">";
2091                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2092                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2093                               "blob");
2094                 if ($have_blame) {
2095                         print " | " .
2096                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2097                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2098                                       "blame");
2099                 }
2100                 if (defined $hash_base) {
2101                         print " | " .
2102                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2103                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2104                                       "history");
2105                 }
2106                 print " | " .
2107                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2108                                                file_name=>"$basedir$t->{'name'}")},
2109                                 "raw");
2110                 print "</td>\n";
2111
2112         } elsif ($t->{'type'} eq "tree") {
2113                 print "<td class=\"list\">";
2114                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2115                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2116                               esc_path($t->{'name'}));
2117                 print "</td>\n";
2118                 print "<td class=\"link\">";
2119                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2120                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2121                               "tree");
2122                 if (defined $hash_base) {
2123                         print " | " .
2124                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2125                                                      file_name=>"$basedir$t->{'name'}")},
2126                                       "history");
2127                 }
2128                 print "</td>\n";
2129         }
2130 }
2131
2132 ## ......................................................................
2133 ## functions printing large fragments of HTML
2134
2135 sub git_difftree_body {
2136         my ($difftree, $hash, $parent) = @_;
2137         my ($have_blame) = gitweb_check_feature('blame');
2138         print "<div class=\"list_head\">\n";
2139         if ($#{$difftree} > 10) {
2140                 print(($#{$difftree} + 1) . " files changed:\n");
2141         }
2142         print "</div>\n";
2143
2144         print "<table class=\"diff_tree\">\n";
2145         my $alternate = 1;
2146         my $patchno = 0;
2147         foreach my $line (@{$difftree}) {
2148                 my %diff = parse_difftree_raw_line($line);
2149
2150                 if ($alternate) {
2151                         print "<tr class=\"dark\">\n";
2152                 } else {
2153                         print "<tr class=\"light\">\n";
2154                 }
2155                 $alternate ^= 1;
2156
2157                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2158                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2159                 if ($diff{'to_mode'} ne ('0' x 6)) {
2160                         $to_mode_oct = oct $diff{'to_mode'};
2161                         if (S_ISREG($to_mode_oct)) { # only for regular file
2162                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2163                         }
2164                         $to_file_type = file_type($diff{'to_mode'});
2165                 }
2166                 if ($diff{'from_mode'} ne ('0' x 6)) {
2167                         $from_mode_oct = oct $diff{'from_mode'};
2168                         if (S_ISREG($to_mode_oct)) { # only for regular file
2169                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2170                         }
2171                         $from_file_type = file_type($diff{'from_mode'});
2172                 }
2173
2174                 if ($diff{'status'} eq "A") { # created
2175                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2176                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2177                         $mode_chng   .= "]</span>";
2178                         print "<td>";
2179                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2180                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2181                                       -class => "list"}, esc_path($diff{'file'}));
2182                         print "</td>\n";
2183                         print "<td>$mode_chng</td>\n";
2184                         print "<td class=\"link\">";
2185                         if ($action eq 'commitdiff') {
2186                                 # link to patch
2187                                 $patchno++;
2188                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2189                                 print " | ";
2190                         }
2191                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2192                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2193                                       "blob") . " | ";
2194                         print "</td>\n";
2195
2196                 } elsif ($diff{'status'} eq "D") { # deleted
2197                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2198                         print "<td>";
2199                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2200                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2201                                        -class => "list"}, esc_path($diff{'file'}));
2202                         print "</td>\n";
2203                         print "<td>$mode_chng</td>\n";
2204                         print "<td class=\"link\">";
2205                         if ($action eq 'commitdiff') {
2206                                 # link to patch
2207                                 $patchno++;
2208                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2209                                 print " | ";
2210                         }
2211                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2212                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2213                                       "blob") . " | ";
2214                         if ($have_blame) {
2215                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2216                                                              file_name=>$diff{'file'})},
2217                                               "blame") . " | ";
2218                         }
2219                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2220                                                      file_name=>$diff{'file'})},
2221                                       "history");
2222                         print "</td>\n";
2223
2224                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2225                         my $mode_chnge = "";
2226                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2227                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2228                                 if ($from_file_type != $to_file_type) {
2229                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2230                                 }
2231                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2232                                         if ($from_mode_str && $to_mode_str) {
2233                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2234                                         } elsif ($to_mode_str) {
2235                                                 $mode_chnge .= " mode: $to_mode_str";
2236                                         }
2237                                 }
2238                                 $mode_chnge .= "]</span>\n";
2239                         }
2240                         print "<td>";
2241                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2242                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2243                                       -class => "list"}, esc_path($diff{'file'}));
2244                         print "</td>\n";
2245                         print "<td>$mode_chnge</td>\n";
2246                         print "<td class=\"link\">";
2247                         if ($action eq 'commitdiff') {
2248                                 # link to patch
2249                                 $patchno++;
2250                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2251                                       " | ";
2252                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2253                                 # "commit" view and modified file (not onlu mode changed)
2254                                 print $cgi->a({-href => href(action=>"blobdiff",
2255                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2256                                                              hash_base=>$hash, hash_parent_base=>$parent,
2257                                                              file_name=>$diff{'file'})},
2258                                               "diff") .
2259                                       " | ";
2260                         }
2261                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2262                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2263                                        "blob") . " | ";
2264                         if ($have_blame) {
2265                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2266                                                              file_name=>$diff{'file'})},
2267                                               "blame") . " | ";
2268                         }
2269                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2270                                                      file_name=>$diff{'file'})},
2271                                       "history");
2272                         print "</td>\n";
2273
2274                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2275                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2276                         my $nstatus = $status_name{$diff{'status'}};
2277                         my $mode_chng = "";
2278                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2279                                 # mode also for directories, so we cannot use $to_mode_str
2280                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2281                         }
2282                         print "<td>" .
2283                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2284                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2285                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2286                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2287                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2288                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2289                                       -class => "list"}, esc_path($diff{'from_file'})) .
2290                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2291                               "<td class=\"link\">";
2292                         if ($action eq 'commitdiff') {
2293                                 # link to patch
2294                                 $patchno++;
2295                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2296                                       " | ";
2297                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2298                                 # "commit" view and modified file (not only pure rename or copy)
2299                                 print $cgi->a({-href => href(action=>"blobdiff",
2300                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2301                                                              hash_base=>$hash, hash_parent_base=>$parent,
2302                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2303                                               "diff") .
2304                                       " | ";
2305                         }
2306                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2307                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2308                                       "blob") . " | ";
2309                         if ($have_blame) {
2310                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2311                                                              file_name=>$diff{'to_file'})},
2312                                               "blame") . " | ";
2313                         }
2314                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2315                                                     file_name=>$diff{'to_file'})},
2316                                       "history");
2317                         print "</td>\n";
2318
2319                 } # we should not encounter Unmerged (U) or Unknown (X) status
2320                 print "</tr>\n";
2321         }
2322         print "</table>\n";
2323 }
2324
2325 sub git_patchset_body {
2326         my ($fd, $difftree, $hash, $hash_parent) = @_;
2327
2328         my $patch_idx = 0;
2329         my $patch_line;
2330         my $diffinfo;
2331         my (%from, %to);
2332         my ($from_id, $to_id);
2333
2334         print "<div class=\"patchset\">\n";
2335
2336         # skip to first patch
2337         while ($patch_line = <$fd>) {
2338                 chomp $patch_line;
2339
2340                 last if ($patch_line =~ m/^diff /);
2341         }
2342
2343  PATCH:
2344         while ($patch_line) {
2345                 my @diff_header;
2346
2347                 # git diff header
2348                 #assert($patch_line =~ m/^diff /) if DEBUG;
2349                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2350                 push @diff_header, $patch_line;
2351
2352                 # extended diff header
2353         EXTENDED_HEADER:
2354                 while ($patch_line = <$fd>) {
2355                         chomp $patch_line;
2356
2357                         last EXTENDED_HEADER if ($patch_line =~ m/^--- /);
2358
2359                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2360                                 $from_id = $1;
2361                                 $to_id   = $2;
2362                         }
2363
2364                         push @diff_header, $patch_line;
2365                 }
2366                 #last PATCH unless $patch_line;
2367                 my $last_patch_line = $patch_line;
2368
2369                 # check if current patch belong to current raw line
2370                 # and parse raw git-diff line if needed
2371                 if (defined $diffinfo &&
2372                     $diffinfo->{'from_id'} eq $from_id &&
2373                     $diffinfo->{'to_id'}   eq $to_id) {
2374                         # this is split patch
2375                         print "<div class=\"patch cont\">\n";
2376                 } else {
2377                         # advance raw git-diff output if needed
2378                         $patch_idx++ if defined $diffinfo;
2379
2380                         # read and prepare patch information
2381                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2382                                 # pre-parsed (or generated by hand)
2383                                 $diffinfo = $difftree->[$patch_idx];
2384                         } else {
2385                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2386                         }
2387                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2388                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2389                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2390                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2391                                                      hash=>$diffinfo->{'from_id'},
2392                                                      file_name=>$from{'file'});
2393                         }
2394                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2395                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2396                                                    hash=>$diffinfo->{'to_id'},
2397                                                    file_name=>$to{'file'});
2398                         }
2399                         # this is first patch for raw difftree line with $patch_idx index
2400                         # we index @$difftree array from 0, but number patches from 1
2401                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2402                 }
2403
2404                 # print "git diff" header
2405                 $patch_line = shift @diff_header;
2406                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2407                 if ($from{'href'}) {
2408                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2409                                                'a/' . esc_path($from{'file'}));
2410                 } else { # file was added
2411                         $patch_line .= 'a/' . esc_path($from{'file'});
2412                 }
2413                 $patch_line .= ' ';
2414                 if ($to{'href'}) {
2415                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2416                                                'b/' . esc_path($to{'file'}));
2417                 } else { # file was deleted
2418                         $patch_line .= 'b/' . esc_path($to{'file'});
2419                 }
2420                 print "<div class=\"diff header\">$patch_line</div>\n";
2421
2422                 # print extended diff header
2423                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2424         EXTENDED_HEADER:
2425                 foreach $patch_line (@diff_header) {
2426                         # match <path>
2427                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2428                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2429                                                         esc_path($from{'file'}));
2430                         }
2431                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2432                                 $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2433                                                       esc_path($to{'file'}));
2434                         }
2435                         # match <mode>
2436                         if ($patch_line =~ m/\s(\d{6})$/) {
2437                                 $patch_line .= '<span class="info"> (' .
2438                                                file_type_long($1) .
2439                                                ')</span>';
2440                         }
2441                         # match <hash>
2442                         if ($patch_line =~ m/^index/) {
2443                                 my ($from_link, $to_link);
2444                                 if ($from{'href'}) {
2445                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2446                                                              substr($diffinfo->{'from_id'},0,7));
2447                                 } else {
2448                                         $from_link = '0' x 7;
2449                                 }
2450                                 if ($to{'href'}) {
2451                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2452                                                            substr($diffinfo->{'to_id'},0,7));
2453                                 } else {
2454                                         $to_link = '0' x 7;
2455                                 }
2456                                 #affirm {
2457                                 #       my ($from_hash, $to_hash) =
2458                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2459                                 #       my ($from_id, $to_id) =
2460                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2461                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2462                                 #} if DEBUG;
2463                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2464                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2465                         }
2466                         print $patch_line . "<br/>\n";
2467                 }
2468                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2469
2470                 # from-file/to-file diff header
2471                 $patch_line = $last_patch_line;
2472                 #assert($patch_line =~ m/^---/) if DEBUG;
2473                 if ($from{'href'}) {
2474                         $patch_line = '--- a/' .
2475                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2476                                               esc_path($from{'file'}));
2477                 }
2478                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2479
2480                 $patch_line = <$fd>;
2481                 #last PATCH unless $patch_line;
2482                 chomp $patch_line;
2483
2484                 #assert($patch_line =~ m/^+++/) if DEBUG;
2485                 if ($to{'href'}) {
2486                         $patch_line = '+++ b/' .
2487                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2488                                               esc_path($to{'file'}));
2489                 }
2490                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2491
2492                 # the patch itself
2493         LINE:
2494                 while ($patch_line = <$fd>) {
2495                         chomp $patch_line;
2496
2497                         next PATCH if ($patch_line =~ m/^diff /);
2498
2499                         print format_diff_line($patch_line, \%from, \%to);
2500                 }
2501
2502         } continue {
2503                 print "</div>\n"; # class="patch"
2504         }
2505
2506         print "</div>\n"; # class="patchset"
2507 }
2508
2509 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2510
2511 sub git_project_list_body {
2512         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2513
2514         my ($check_forks) = gitweb_check_feature('forks');
2515
2516         my @projects;
2517         foreach my $pr (@$projlist) {
2518                 my (@aa) = git_get_last_activity($pr->{'path'});
2519                 unless (@aa) {
2520                         next;
2521                 }
2522                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2523                 if (!defined $pr->{'descr'}) {
2524                         my $descr = git_get_project_description($pr->{'path'}) || "";
2525                         $pr->{'descr_long'} = to_utf8($descr);
2526                         $pr->{'descr'} = chop_str($descr, 25, 5);
2527                 }
2528                 if (!defined $pr->{'owner'}) {
2529                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2530                 }
2531                 if ($check_forks) {
2532                         my $pname = $pr->{'path'};
2533                         if (($pname =~ s/\.git$//) &&
2534                             ($pname !~ /\/$/) &&
2535                             (-d "$projectroot/$pname")) {
2536                                 $pr->{'forks'} = "-d $projectroot/$pname";
2537                         }
2538                         else {
2539                                 $pr->{'forks'} = 0;
2540                         }
2541                 }
2542                 push @projects, $pr;
2543         }
2544
2545         $order ||= "project";
2546         $from = 0 unless defined $from;
2547         $to = $#projects if (!defined $to || $#projects < $to);
2548
2549         print "<table class=\"project_list\">\n";
2550         unless ($no_header) {
2551                 print "<tr>\n";
2552                 if ($check_forks) {
2553                         print "<th></th>\n";
2554                 }
2555                 if ($order eq "project") {
2556                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2557                         print "<th>Project</th>\n";
2558                 } else {
2559                         print "<th>" .
2560                               $cgi->a({-href => href(project=>undef, order=>'project'),
2561                                        -class => "header"}, "Project") .
2562                               "</th>\n";
2563                 }
2564                 if ($order eq "descr") {
2565                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2566                         print "<th>Description</th>\n";
2567                 } else {
2568                         print "<th>" .
2569                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2570                                        -class => "header"}, "Description") .
2571                               "</th>\n";
2572                 }
2573                 if ($order eq "owner") {
2574                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2575                         print "<th>Owner</th>\n";
2576                 } else {
2577                         print "<th>" .
2578                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2579                                        -class => "header"}, "Owner") .
2580                               "</th>\n";
2581                 }
2582                 if ($order eq "age") {
2583                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2584                         print "<th>Last Change</th>\n";
2585                 } else {
2586                         print "<th>" .
2587                               $cgi->a({-href => href(project=>undef, order=>'age'),
2588                                        -class => "header"}, "Last Change") .
2589                               "</th>\n";
2590                 }
2591                 print "<th></th>\n" .
2592                       "</tr>\n";
2593         }
2594         my $alternate = 1;
2595         for (my $i = $from; $i <= $to; $i++) {
2596                 my $pr = $projects[$i];
2597                 if ($alternate) {
2598                         print "<tr class=\"dark\">\n";
2599                 } else {
2600                         print "<tr class=\"light\">\n";
2601                 }
2602                 $alternate ^= 1;
2603                 if ($check_forks) {
2604                         print "<td>";
2605                         if ($pr->{'forks'}) {
2606                                 print "<!-- $pr->{'forks'} -->\n";
2607                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2608                         }
2609                         print "</td>\n";
2610                 }
2611                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2612                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2613                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2614                                         -class => "list", -title => $pr->{'descr_long'}},
2615                                         esc_html($pr->{'descr'})) . "</td>\n" .
2616                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2617                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2618                       $pr->{'age_string'} . "</td>\n" .
2619                       "<td class=\"link\">" .
2620                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2621                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2622                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2623                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2624                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2625                       "</td>\n" .
2626                       "</tr>\n";
2627         }
2628         if (defined $extra) {
2629                 print "<tr>\n";
2630                 if ($check_forks) {
2631                         print "<td></td>\n";
2632                 }
2633                 print "<td colspan=\"5\">$extra</td>\n" .
2634                       "</tr>\n";
2635         }
2636         print "</table>\n";
2637 }
2638
2639 sub git_shortlog_body {
2640         # uses global variable $project
2641         my ($revlist, $from, $to, $refs, $extra) = @_;
2642
2643         my $have_snapshot = gitweb_have_snapshot();
2644
2645         $from = 0 unless defined $from;
2646         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2647
2648         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2649         my $alternate = 1;
2650         for (my $i = $from; $i <= $to; $i++) {
2651                 my $commit = $revlist->[$i];
2652                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2653                 my $ref = format_ref_marker($refs, $commit);
2654                 my %co = parse_commit($commit);
2655                 if ($alternate) {
2656                         print "<tr class=\"dark\">\n";
2657                 } else {
2658                         print "<tr class=\"light\">\n";
2659                 }
2660                 $alternate ^= 1;
2661                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2662                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2663                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2664                       "<td>";
2665                 print format_subject_html($co{'title'}, $co{'title_short'},
2666                                           href(action=>"commit", hash=>$commit), $ref);
2667                 print "</td>\n" .
2668                       "<td class=\"link\">" .
2669                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2670                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2671                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2672                 if ($have_snapshot) {
2673                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2674                 }
2675                 print "</td>\n" .
2676                       "</tr>\n";
2677         }
2678         if (defined $extra) {
2679                 print "<tr>\n" .
2680                       "<td colspan=\"4\">$extra</td>\n" .
2681                       "</tr>\n";
2682         }
2683         print "</table>\n";
2684 }
2685
2686 sub git_history_body {
2687         # Warning: assumes constant type (blob or tree) during history
2688         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2689
2690         $from = 0 unless defined $from;
2691         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2692
2693         print "<table class=\"history\" cellspacing=\"0\">\n";
2694         my $alternate = 1;
2695         for (my $i = $from; $i <= $to; $i++) {
2696                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2697                         next;
2698                 }
2699
2700                 my $commit = $1;
2701                 my %co = parse_commit($commit);
2702                 if (!%co) {
2703                         next;
2704                 }
2705
2706                 my $ref = format_ref_marker($refs, $commit);
2707
2708                 if ($alternate) {
2709                         print "<tr class=\"dark\">\n";
2710                 } else {
2711                         print "<tr class=\"light\">\n";
2712                 }
2713                 $alternate ^= 1;
2714                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2715                       # shortlog uses      chop_str($co{'author_name'}, 10)
2716                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2717                       "<td>";
2718                 # originally git_history used chop_str($co{'title'}, 50)
2719                 print format_subject_html($co{'title'}, $co{'title_short'},
2720                                           href(action=>"commit", hash=>$commit), $ref);
2721                 print "</td>\n" .
2722                       "<td class=\"link\">" .
2723                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2724                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2725
2726                 if ($ftype eq 'blob') {
2727                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2728                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2729                         if (defined $blob_current && defined $blob_parent &&
2730                                         $blob_current ne $blob_parent) {
2731                                 print " | " .
2732                                         $cgi->a({-href => href(action=>"blobdiff",
2733                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2734                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2735                                                                file_name=>$file_name)},
2736                                                 "diff to current");
2737                         }
2738                 }
2739                 print "</td>\n" .
2740                       "</tr>\n";
2741         }
2742         if (defined $extra) {
2743                 print "<tr>\n" .
2744                       "<td colspan=\"4\">$extra</td>\n" .
2745                       "</tr>\n";
2746         }
2747         print "</table>\n";
2748 }
2749
2750 sub git_tags_body {
2751         # uses global variable $project
2752         my ($taglist, $from, $to, $extra) = @_;
2753         $from = 0 unless defined $from;
2754         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2755
2756         print "<table class=\"tags\" cellspacing=\"0\">\n";
2757         my $alternate = 1;
2758         for (my $i = $from; $i <= $to; $i++) {
2759                 my $entry = $taglist->[$i];
2760                 my %tag = %$entry;
2761                 my $comment = $tag{'subject'};
2762                 my $comment_short;
2763                 if (defined $comment) {
2764                         $comment_short = chop_str($comment, 30, 5);
2765                 }
2766                 if ($alternate) {
2767                         print "<tr class=\"dark\">\n";
2768                 } else {
2769                         print "<tr class=\"light\">\n";
2770                 }
2771                 $alternate ^= 1;
2772                 print "<td><i>$tag{'age'}</i></td>\n" .
2773                       "<td>" .
2774                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2775                                -class => "list name"}, esc_html($tag{'name'})) .
2776                       "</td>\n" .
2777                       "<td>";
2778                 if (defined $comment) {
2779                         print format_subject_html($comment, $comment_short,
2780                                                   href(action=>"tag", hash=>$tag{'id'}));
2781                 }
2782                 print "</td>\n" .
2783                       "<td class=\"selflink\">";
2784                 if ($tag{'type'} eq "tag") {
2785                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2786                 } else {
2787                         print "&nbsp;";
2788                 }
2789                 print "</td>\n" .
2790                       "<td class=\"link\">" . " | " .
2791                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2792                 if ($tag{'reftype'} eq "commit") {
2793                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2794                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2795                 } elsif ($tag{'reftype'} eq "blob") {
2796                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2797                 }
2798                 print "</td>\n" .
2799                       "</tr>";
2800         }
2801         if (defined $extra) {
2802                 print "<tr>\n" .
2803                       "<td colspan=\"5\">$extra</td>\n" .
2804                       "</tr>\n";
2805         }
2806         print "</table>\n";
2807 }
2808
2809 sub git_heads_body {
2810         # uses global variable $project
2811         my ($headlist, $head, $from, $to, $extra) = @_;
2812         $from = 0 unless defined $from;
2813         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2814
2815         print "<table class=\"heads\" cellspacing=\"0\">\n";
2816         my $alternate = 1;
2817         for (my $i = $from; $i <= $to; $i++) {
2818                 my $entry = $headlist->[$i];
2819                 my %ref = %$entry;
2820                 my $curr = $ref{'id'} eq $head;
2821                 if ($alternate) {
2822                         print "<tr class=\"dark\">\n";
2823                 } else {
2824                         print "<tr class=\"light\">\n";
2825                 }
2826                 $alternate ^= 1;
2827                 print "<td><i>$ref{'age'}</i></td>\n" .
2828                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2829                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2830                                -class => "list name"},esc_html($ref{'name'})) .
2831                       "</td>\n" .
2832                       "<td class=\"link\">" .
2833                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2834                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2835                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2836                       "</td>\n" .
2837                       "</tr>";
2838         }
2839         if (defined $extra) {
2840                 print "<tr>\n" .
2841                       "<td colspan=\"3\">$extra</td>\n" .
2842                       "</tr>\n";
2843         }
2844         print "</table>\n";
2845 }
2846
2847 ## ======================================================================
2848 ## ======================================================================
2849 ## actions
2850
2851 sub git_project_list {
2852         my $order = $cgi->param('o');
2853         if (defined $order && $order !~ m/project|descr|owner|age/) {
2854                 die_error(undef, "Unknown order parameter");
2855         }
2856
2857         my @list = git_get_projects_list();
2858         if (!@list) {
2859                 die_error(undef, "No projects found");
2860         }
2861
2862         git_header_html();
2863         if (-f $home_text) {
2864                 print "<div class=\"index_include\">\n";
2865                 open (my $fd, $home_text);
2866                 print <$fd>;
2867                 close $fd;
2868                 print "</div>\n";
2869         }
2870         git_project_list_body(\@list, $order);
2871         git_footer_html();
2872 }
2873
2874 sub git_forks {
2875         my $order = $cgi->param('o');
2876         if (defined $order && $order !~ m/project|descr|owner|age/) {
2877                 die_error(undef, "Unknown order parameter");
2878         }
2879
2880         my @list = git_get_projects_list($project);
2881         if (!@list) {
2882                 die_error(undef, "No forks found");
2883         }
2884
2885         git_header_html();
2886         git_print_page_nav('','');
2887         git_print_header_div('summary', "$project forks");
2888         git_project_list_body(\@list, $order);
2889         git_footer_html();
2890 }
2891
2892 sub git_project_index {
2893         my @projects = git_get_projects_list($project);
2894
2895         print $cgi->header(
2896                 -type => 'text/plain',
2897                 -charset => 'utf-8',
2898                 -content_disposition => 'inline; filename="index.aux"');
2899
2900         foreach my $pr (@projects) {
2901                 if (!exists $pr->{'owner'}) {
2902                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2903                 }
2904
2905                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2906                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2907                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2908                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2909                 $path  =~ s/ /\+/g;
2910                 $owner =~ s/ /\+/g;
2911
2912                 print "$path $owner\n";
2913         }
2914 }
2915
2916 sub git_summary {
2917         my $descr = git_get_project_description($project) || "none";
2918         my %co = parse_commit("HEAD");
2919         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2920         my $head = $co{'id'};
2921
2922         my $owner = git_get_project_owner($project);
2923
2924         my $refs = git_get_references();
2925         # These get_*_list functions return one more to allow us to see if
2926         # there are more ...
2927         my @taglist  = git_get_tags_list(16);
2928         my @headlist = git_get_heads_list(16);
2929         my @forklist;
2930         my ($check_forks) = gitweb_check_feature('forks');
2931
2932         if ($check_forks) {
2933                 @forklist = git_get_projects_list($project);
2934         }
2935
2936         git_header_html();
2937         git_print_page_nav('summary','', $head);
2938
2939         print "<div class=\"title\">&nbsp;</div>\n";
2940         print "<table cellspacing=\"0\">\n" .
2941               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2942               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2943               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2944         # use per project git URL list in $projectroot/$project/cloneurl
2945         # or make project git URL from git base URL and project name
2946         my $url_tag = "URL";
2947         my @url_list = git_get_project_url_list($project);
2948         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2949         foreach my $git_url (@url_list) {
2950                 next unless $git_url;
2951                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2952                 $url_tag = "";
2953         }
2954         print "</table>\n";
2955
2956         if (-s "$projectroot/$project/README.html") {
2957                 if (open my $fd, "$projectroot/$project/README.html") {
2958                         print "<div class=\"title\">readme</div>\n";
2959                         print $_ while (<$fd>);
2960                         close $fd;
2961                 }
2962         }
2963
2964         # we need to request one more than 16 (0..15) to check if
2965         # those 16 are all
2966         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2967                 $head, "--"
2968                 or die_error(undef, "Open git-rev-list failed");
2969         my @revlist = map { chomp; $_ } <$fd>;
2970         close $fd;
2971         git_print_header_div('shortlog');
2972         git_shortlog_body(\@revlist, 0, 15, $refs,
2973                           $#revlist <=  15 ? undef :
2974                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2975
2976         if (@taglist) {
2977                 git_print_header_div('tags');
2978                 git_tags_body(\@taglist, 0, 15,
2979                               $#taglist <=  15 ? undef :
2980                               $cgi->a({-href => href(action=>"tags")}, "..."));
2981         }
2982
2983         if (@headlist) {
2984                 git_print_header_div('heads');
2985                 git_heads_body(\@headlist, $head, 0, 15,
2986                                $#headlist <= 15 ? undef :
2987                                $cgi->a({-href => href(action=>"heads")}, "..."));
2988         }
2989
2990         if (@forklist) {
2991                 git_print_header_div('forks');
2992                 git_project_list_body(\@forklist, undef, 0, 15,
2993                                       $#forklist <= 15 ? undef :
2994                                       $cgi->a({-href => href(action=>"forks")}, "..."),
2995                                       'noheader');
2996         }
2997
2998         git_footer_html();
2999 }
3000
3001 sub git_tag {
3002         my $head = git_get_head_hash($project);
3003         git_header_html();
3004         git_print_page_nav('','', $head,undef,$head);
3005         my %tag = parse_tag($hash);
3006         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3007         print "<div class=\"title_text\">\n" .
3008               "<table cellspacing=\"0\">\n" .
3009               "<tr>\n" .
3010               "<td>object</td>\n" .
3011               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3012                                $tag{'object'}) . "</td>\n" .
3013               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3014                                               $tag{'type'}) . "</td>\n" .
3015               "</tr>\n";
3016         if (defined($tag{'author'})) {
3017                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3018                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3019                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3020                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3021                         "</td></tr>\n";
3022         }
3023         print "</table>\n\n" .
3024               "</div>\n";
3025         print "<div class=\"page_body\">";
3026         my $comment = $tag{'comment'};
3027         foreach my $line (@$comment) {
3028                 chomp $line;
3029                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3030         }
3031         print "</div>\n";
3032         git_footer_html();
3033 }
3034
3035 sub git_blame2 {
3036         my $fd;
3037         my $ftype;
3038
3039         my ($have_blame) = gitweb_check_feature('blame');
3040         if (!$have_blame) {
3041                 die_error('403 Permission denied', "Permission denied");
3042         }
3043         die_error('404 Not Found', "File name not defined") if (!$file_name);
3044         $hash_base ||= git_get_head_hash($project);
3045         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3046         my %co = parse_commit($hash_base)
3047                 or die_error(undef, "Reading commit failed");
3048         if (!defined $hash) {
3049                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3050                         or die_error(undef, "Error looking up file");
3051         }
3052         $ftype = git_get_type($hash);
3053         if ($ftype !~ "blob") {
3054                 die_error("400 Bad Request", "Object is not a blob");
3055         }
3056         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3057               $file_name, $hash_base)
3058                 or die_error(undef, "Open git-blame failed");
3059         git_header_html();
3060         my $formats_nav =
3061                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3062                         "blob") .
3063                 " | " .
3064                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3065                         "history") .
3066                 " | " .
3067                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3068                         "HEAD");
3069         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3070         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3071         git_print_page_path($file_name, $ftype, $hash_base);
3072         my @rev_color = (qw(light2 dark2));
3073         my $num_colors = scalar(@rev_color);
3074         my $current_color = 0;
3075         my $last_rev;
3076         print <<HTML;
3077 <div class="page_body">
3078 <table class="blame">
3079 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3080 HTML
3081         my %metainfo = ();
3082         while (1) {
3083                 $_ = <$fd>;
3084                 last unless defined $_;
3085                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3086                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3087                 if (!exists $metainfo{$full_rev}) {
3088                         $metainfo{$full_rev} = {};
3089                 }
3090                 my $meta = $metainfo{$full_rev};
3091                 while (<$fd>) {
3092                         last if (s/^\t//);
3093                         if (/^(\S+) (.*)$/) {
3094                                 $meta->{$1} = $2;
3095                         }
3096                 }
3097                 my $data = $_;
3098                 chomp $data;
3099                 my $rev = substr($full_rev, 0, 8);
3100                 my $author = $meta->{'author'};
3101                 my %date = parse_date($meta->{'author-time'},
3102                                       $meta->{'author-tz'});
3103                 my $date = $date{'iso-tz'};
3104                 if ($group_size) {
3105                         $current_color = ++$current_color % $num_colors;
3106                 }
3107                 print "<tr class=\"$rev_color[$current_color]\">\n";
3108                 if ($group_size) {
3109                         print "<td class=\"sha1\"";
3110                         print " title=\"". esc_html($author) . ", $date\"";
3111                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3112                         print ">";
3113                         print $cgi->a({-href => href(action=>"commit",
3114                                                      hash=>$full_rev,
3115                                                      file_name=>$file_name)},
3116                                       esc_html($rev));
3117                         print "</td>\n";
3118                 }
3119                 my $blamed = href(action => 'blame',
3120                                   file_name => $meta->{'filename'},
3121                                   hash_base => $full_rev);
3122                 print "<td class=\"linenr\">";
3123                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3124                                 -id => "l$lineno",
3125                                 -class => "linenr" },
3126                               esc_html($lineno));
3127                 print "</td>";
3128                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3129                 print "</tr>\n";
3130         }
3131         print "</table>\n";
3132         print "</div>";
3133         close $fd
3134                 or print "Reading blob failed\n";
3135         git_footer_html();
3136 }
3137
3138 sub git_blame {
3139         my $fd;
3140
3141         my ($have_blame) = gitweb_check_feature('blame');
3142         if (!$have_blame) {
3143                 die_error('403 Permission denied', "Permission denied");
3144         }
3145         die_error('404 Not Found', "File name not defined") if (!$file_name);
3146         $hash_base ||= git_get_head_hash($project);
3147         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3148         my %co = parse_commit($hash_base)
3149                 or die_error(undef, "Reading commit failed");
3150         if (!defined $hash) {
3151                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3152                         or die_error(undef, "Error lookup file");
3153         }
3154         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3155                 or die_error(undef, "Open git-annotate failed");
3156         git_header_html();
3157         my $formats_nav =
3158                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3159                         "blob") .
3160                 " | " .
3161                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3162                         "history") .
3163                 " | " .
3164                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3165                         "HEAD");
3166         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3167         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3168         git_print_page_path($file_name, 'blob', $hash_base);
3169         print "<div class=\"page_body\">\n";
3170         print <<HTML;
3171 <table class="blame">
3172   <tr>
3173     <th>Commit</th>
3174     <th>Age</th>
3175     <th>Author</th>
3176     <th>Line</th>
3177     <th>Data</th>
3178   </tr>
3179 HTML
3180         my @line_class = (qw(light dark));
3181         my $line_class_len = scalar (@line_class);
3182         my $line_class_num = $#line_class;
3183         while (my $line = <$fd>) {
3184                 my $long_rev;
3185                 my $short_rev;
3186                 my $author;
3187                 my $time;
3188                 my $lineno;
3189                 my $data;
3190                 my $age;
3191                 my $age_str;
3192                 my $age_class;
3193
3194                 chomp $line;
3195                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3196
3197                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3198                         $long_rev = $1;
3199                         $author   = $2;
3200                         $time     = $3;
3201                         $lineno   = $4;
3202                         $data     = $5;
3203                 } else {
3204                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3205                         next;
3206                 }
3207                 $short_rev  = substr ($long_rev, 0, 8);
3208                 $age        = time () - $time;
3209                 $age_str    = age_string ($age);
3210                 $age_str    =~ s/ /&nbsp;/g;
3211                 $age_class  = age_class($age);
3212                 $author     = esc_html ($author);
3213                 $author     =~ s/ /&nbsp;/g;
3214
3215                 $data = untabify($data);
3216                 $data = esc_html ($data);
3217
3218                 print <<HTML;
3219   <tr class="$line_class[$line_class_num]">
3220     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3221     <td class="$age_class">$age_str</td>
3222     <td>$author</td>
3223     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3224     <td class="pre">$data</td>
3225   </tr>
3226 HTML
3227         } # while (my $line = <$fd>)
3228         print "</table>\n\n";
3229         close $fd
3230                 or print "Reading blob failed.\n";
3231         print "</div>";
3232         git_footer_html();
3233 }
3234
3235 sub git_tags {
3236         my $head = git_get_head_hash($project);
3237         git_header_html();
3238         git_print_page_nav('','', $head,undef,$head);
3239         git_print_header_div('summary', $project);
3240
3241         my @tagslist = git_get_tags_list();
3242         if (@tagslist) {
3243                 git_tags_body(\@tagslist);
3244         }
3245         git_footer_html();
3246 }
3247
3248 sub git_heads {
3249         my $head = git_get_head_hash($project);
3250         git_header_html();
3251         git_print_page_nav('','', $head,undef,$head);
3252         git_print_header_div('summary', $project);
3253
3254         my @headslist = git_get_heads_list();
3255         if (@headslist) {
3256                 git_heads_body(\@headslist, $head);
3257         }
3258         git_footer_html();
3259 }
3260
3261 sub git_blob_plain {
3262         my $expires;
3263
3264         if (!defined $hash) {
3265                 if (defined $file_name) {
3266                         my $base = $hash_base || git_get_head_hash($project);
3267                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3268                                 or die_error(undef, "Error lookup file");
3269                 } else {
3270                         die_error(undef, "No file name defined");
3271                 }
3272         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3273                 # blobs defined by non-textual hash id's can be cached
3274                 $expires = "+1d";
3275         }
3276
3277         my $type = shift;
3278         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3279                 or die_error(undef, "Couldn't cat $file_name, $hash");
3280
3281         $type ||= blob_mimetype($fd, $file_name);
3282
3283         # save as filename, even when no $file_name is given
3284         my $save_as = "$hash";
3285         if (defined $file_name) {
3286                 $save_as = $file_name;
3287         } elsif ($type =~ m/^text\//) {
3288                 $save_as .= '.txt';
3289         }
3290
3291         print $cgi->header(
3292                 -type => "$type",
3293                 -expires=>$expires,
3294                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3295         undef $/;
3296         binmode STDOUT, ':raw';
3297         print <$fd>;
3298         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3299         $/ = "\n";
3300         close $fd;
3301 }
3302
3303 sub git_blob {
3304         my $expires;
3305
3306         if (!defined $hash) {
3307                 if (defined $file_name) {
3308                         my $base = $hash_base || git_get_head_hash($project);
3309                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3310                                 or die_error(undef, "Error lookup file");
3311                 } else {
3312                         die_error(undef, "No file name defined");
3313                 }
3314         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3315                 # blobs defined by non-textual hash id's can be cached
3316                 $expires = "+1d";
3317         }
3318
3319         my ($have_blame) = gitweb_check_feature('blame');
3320         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3321                 or die_error(undef, "Couldn't cat $file_name, $hash");
3322         my $mimetype = blob_mimetype($fd, $file_name);
3323         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3324                 close $fd;
3325                 return git_blob_plain($mimetype);
3326         }
3327         # we can have blame only for text/* mimetype
3328         $have_blame &&= ($mimetype =~ m!^text/!);
3329
3330         git_header_html(undef, $expires);
3331         my $formats_nav = '';
3332         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3333                 if (defined $file_name) {
3334                         if ($have_blame) {
3335                                 $formats_nav .=
3336                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3337                                                                hash=>$hash, file_name=>$file_name)},
3338                                                 "blame") .
3339                                         " | ";
3340                         }
3341                         $formats_nav .=
3342                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3343                                                        hash=>$hash, file_name=>$file_name)},
3344                                         "history") .
3345                                 " | " .
3346                                 $cgi->a({-href => href(action=>"blob_plain",
3347                                                        hash=>$hash, file_name=>$file_name)},
3348                                         "raw") .
3349                                 " | " .
3350                                 $cgi->a({-href => href(action=>"blob",
3351                                                        hash_base=>"HEAD", file_name=>$file_name)},
3352                                         "HEAD");
3353                 } else {
3354                         $formats_nav .=
3355                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3356                 }
3357                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3358                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3359         } else {
3360                 print "<div class=\"page_nav\">\n" .
3361                       "<br/><br/></div>\n" .
3362                       "<div class=\"title\">$hash</div>\n";
3363         }
3364         git_print_page_path($file_name, "blob", $hash_base);
3365         print "<div class=\"page_body\">\n";
3366         if ($mimetype =~ m!^text/!) {
3367                 my $nr;
3368                 while (my $line = <$fd>) {
3369                         chomp $line;
3370                         $nr++;
3371                         $line = untabify($line);
3372                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3373                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3374                 }
3375         } elsif ($mimetype =~ m!^image/!) {
3376                 print qq!<img type="$mimetype"!;
3377                 if ($file_name) {
3378                         print qq! alt="$file_name" title="$file_name"!;
3379                 }
3380                 print qq! src="! .
3381                       href(action=>"blob_plain", hash=>$hash,
3382                            hash_base=>$hash_base, file_name=>$file_name) .
3383                       qq!" />\n!;
3384         }
3385         close $fd
3386                 or print "Reading blob failed.\n";
3387         print "</div>";
3388         git_footer_html();
3389 }
3390
3391 sub git_tree {
3392         my $have_snapshot = gitweb_have_snapshot();
3393
3394         if (!defined $hash_base) {
3395                 $hash_base = "HEAD";
3396         }
3397         if (!defined $hash) {
3398                 if (defined $file_name) {
3399                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3400                 } else {
3401                         $hash = $hash_base;
3402                 }
3403         }
3404         $/ = "\0";
3405         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3406                 or die_error(undef, "Open git-ls-tree failed");
3407         my @entries = map { chomp; $_ } <$fd>;
3408         close $fd or die_error(undef, "Reading tree failed");
3409         $/ = "\n";
3410
3411         my $refs = git_get_references();
3412         my $ref = format_ref_marker($refs, $hash_base);
3413         git_header_html();
3414         my $basedir = '';
3415         my ($have_blame) = gitweb_check_feature('blame');
3416         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3417                 my @views_nav = ();
3418                 if (defined $file_name) {
3419                         push @views_nav,
3420                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3421                                                        hash=>$hash, file_name=>$file_name)},
3422                                         "history"),
3423                                 $cgi->a({-href => href(action=>"tree",
3424                                                        hash_base=>"HEAD", file_name=>$file_name)},
3425                                         "HEAD"),
3426                 }
3427                 if ($have_snapshot) {
3428                         # FIXME: Should be available when we have no hash base as well.
3429                         push @views_nav,
3430                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3431                                         "snapshot");
3432                 }
3433                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3434                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3435         } else {
3436                 undef $hash_base;
3437                 print "<div class=\"page_nav\">\n";
3438                 print "<br/><br/></div>\n";
3439                 print "<div class=\"title\">$hash</div>\n";
3440         }
3441         if (defined $file_name) {
3442                 $basedir = $file_name;
3443                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3444                         $basedir .= '/';
3445                 }
3446         }
3447         git_print_page_path($file_name, 'tree', $hash_base);
3448         print "<div class=\"page_body\">\n";
3449         print "<table cellspacing=\"0\">\n";
3450         my $alternate = 1;
3451         # '..' (top directory) link if possible
3452         if (defined $hash_base &&
3453             defined $file_name && $file_name =~ m![^/]+$!) {
3454                 if ($alternate) {
3455                         print "<tr class=\"dark\">\n";
3456                 } else {
3457                         print "<tr class=\"light\">\n";
3458                 }
3459                 $alternate ^= 1;
3460
3461                 my $up = $file_name;
3462                 $up =~ s!/?[^/]+$!!;
3463                 undef $up unless $up;
3464                 # based on git_print_tree_entry
3465                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3466                 print '<td class="list">';
3467                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3468                                              file_name=>$up)},
3469                               "..");
3470                 print "</td>\n";
3471                 print "<td class=\"link\"></td>\n";
3472
3473                 print "</tr>\n";
3474         }
3475         foreach my $line (@entries) {
3476                 my %t = parse_ls_tree_line($line, -z => 1);
3477
3478                 if ($alternate) {
3479                         print "<tr class=\"dark\">\n";
3480                 } else {
3481                         print "<tr class=\"light\">\n";
3482                 }
3483                 $alternate ^= 1;
3484
3485                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3486
3487                 print "</tr>\n";
3488         }
3489         print "</table>\n" .
3490               "</div>";
3491         git_footer_html();
3492 }
3493
3494 sub git_snapshot {
3495         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3496         my $have_snapshot = (defined $ctype && defined $suffix);
3497         if (!$have_snapshot) {
3498                 die_error('403 Permission denied', "Permission denied");
3499         }
3500
3501         if (!defined $hash) {
3502                 $hash = git_get_head_hash($project);
3503         }
3504
3505         my $filename = basename($project) . "-$hash.tar.$suffix";
3506
3507         print $cgi->header(
3508                 -type => "application/$ctype",
3509                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3510                 -status => '200 OK');
3511
3512         my $git = git_cmd_str();
3513         my $name = $project;
3514         $name =~ s/\047/\047\\\047\047/g;
3515         open my $fd, "-|",
3516         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3517                 or die_error(undef, "Execute git-tar-tree failed.");
3518         binmode STDOUT, ':raw';
3519         print <$fd>;
3520         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3521         close $fd;
3522
3523 }
3524
3525 sub git_log {
3526         my $head = git_get_head_hash($project);
3527         if (!defined $hash) {
3528                 $hash = $head;
3529         }
3530         if (!defined $page) {
3531                 $page = 0;
3532         }
3533         my $refs = git_get_references();
3534
3535         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3536         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3537                 or die_error(undef, "Open git-rev-list failed");
3538         my @revlist = map { chomp; $_ } <$fd>;
3539         close $fd;
3540
3541         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3542
3543         git_header_html();
3544         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3545
3546         if (!@revlist) {
3547                 my %co = parse_commit($hash);
3548
3549                 git_print_header_div('summary', $project);
3550                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3551         }
3552         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3553                 my $commit = $revlist[$i];
3554                 my $ref = format_ref_marker($refs, $commit);
3555                 my %co = parse_commit($commit);
3556                 next if !%co;
3557                 my %ad = parse_date($co{'author_epoch'});
3558                 git_print_header_div('commit',
3559                                "<span class=\"age\">$co{'age_string'}</span>" .
3560                                esc_html($co{'title'}) . $ref,
3561                                $commit);
3562                 print "<div class=\"title_text\">\n" .
3563                       "<div class=\"log_link\">\n" .
3564                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3565                       " | " .
3566                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3567                       " | " .
3568                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3569                       "<br/>\n" .
3570                       "</div>\n" .
3571                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3572                       "</div>\n";
3573
3574                 print "<div class=\"log_body\">\n";
3575                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3576                 print "</div>\n";
3577         }
3578         git_footer_html();
3579 }
3580
3581 sub git_commit {
3582         $hash ||= $hash_base || "HEAD";
3583         my %co = parse_commit($hash);
3584         if (!%co) {
3585                 die_error(undef, "Unknown commit object");
3586         }
3587         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3588         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3589
3590         my $parent  = $co{'parent'};
3591         my $parents = $co{'parents'}; # listref
3592
3593         # we need to prepare $formats_nav before any parameter munging
3594         my $formats_nav;
3595         if (!defined $parent) {
3596                 # --root commitdiff
3597                 $formats_nav .= '(initial)';
3598         } elsif (@$parents == 1) {
3599                 # single parent commit
3600                 $formats_nav .=
3601                         '(parent: ' .
3602                         $cgi->a({-href => href(action=>"commit",
3603                                                hash=>$parent)},
3604                                 esc_html(substr($parent, 0, 7))) .
3605                         ')';
3606         } else {
3607                 # merge commit
3608                 $formats_nav .=
3609                         '(merge: ' .
3610                         join(' ', map {
3611                                 $cgi->a({-href => href(action=>"commitdiff",
3612                                                        hash=>$_)},
3613                                         esc_html(substr($_, 0, 7)));
3614                         } @$parents ) .
3615                         ')';
3616         }
3617
3618         if (!defined $parent) {
3619                 $parent = "--root";
3620         }
3621         my @difftree;
3622         if (@$parents <= 1) {
3623                 # difftree output is not printed for merges
3624                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3625                         @diff_opts, $parent, $hash, "--"
3626                                 or die_error(undef, "Open git-diff-tree failed");
3627                 @difftree = map { chomp; $_ } <$fd>;
3628                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3629         }
3630
3631         # non-textual hash id's can be cached
3632         my $expires;
3633         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3634                 $expires = "+1d";
3635         }
3636         my $refs = git_get_references();
3637         my $ref = format_ref_marker($refs, $co{'id'});
3638
3639         my $have_snapshot = gitweb_have_snapshot();
3640
3641         git_header_html(undef, $expires);
3642         git_print_page_nav('commit', '',
3643                            $hash, $co{'tree'}, $hash,
3644                            $formats_nav);
3645
3646         if (defined $co{'parent'}) {
3647                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3648         } else {
3649                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3650         }
3651         print "<div class=\"title_text\">\n" .
3652               "<table cellspacing=\"0\">\n";
3653         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3654               "<tr>" .
3655               "<td></td><td> $ad{'rfc2822'}";
3656         if ($ad{'hour_local'} < 6) {
3657                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3658                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3659         } else {
3660                 printf(" (%02d:%02d %s)",
3661                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3662         }
3663         print "</td>" .
3664               "</tr>\n";
3665         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3666         print "<tr><td></td><td> $cd{'rfc2822'}" .
3667               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3668               "</td></tr>\n";
3669         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3670         print "<tr>" .
3671               "<td>tree</td>" .
3672               "<td class=\"sha1\">" .
3673               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3674                        class => "list"}, $co{'tree'}) .
3675               "</td>" .
3676               "<td class=\"link\">" .
3677               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3678                       "tree");
3679         if ($have_snapshot) {
3680                 print " | " .
3681                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3682         }
3683         print "</td>" .
3684               "</tr>\n";
3685
3686         foreach my $par (@$parents) {
3687                 print "<tr>" .
3688                       "<td>parent</td>" .
3689                       "<td class=\"sha1\">" .
3690                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3691                                class => "list"}, $par) .
3692                       "</td>" .
3693                       "<td class=\"link\">" .
3694                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3695                       " | " .
3696                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3697                       "</td>" .
3698                       "</tr>\n";
3699         }
3700         print "</table>".
3701               "</div>\n";
3702
3703         print "<div class=\"page_body\">\n";
3704         git_print_log($co{'comment'});
3705         print "</div>\n";
3706
3707         if (@$parents <= 1) {
3708                 # do not output difftree/whatchanged for merges
3709                 git_difftree_body(\@difftree, $hash, $parent);
3710         }
3711
3712         git_footer_html();
3713 }
3714
3715 sub git_object {
3716         # object is defined by:
3717         # - hash or hash_base alone
3718         # - hash_base and file_name
3719         my $type;
3720
3721         # - hash or hash_base alone
3722         if ($hash || ($hash_base && !defined $file_name)) {
3723                 my $object_id = $hash || $hash_base;
3724
3725                 my $git_command = git_cmd_str();
3726                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3727                         or die_error('404 Not Found', "Object does not exist");
3728                 $type = <$fd>;
3729                 chomp $type;
3730                 close $fd
3731                         or die_error('404 Not Found', "Object does not exist");
3732
3733         # - hash_base and file_name
3734         } elsif ($hash_base && defined $file_name) {
3735                 $file_name =~ s,/+$,,;
3736
3737                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3738                         or die_error('404 Not Found', "Base object does not exist");
3739
3740                 # here errors should not hapen
3741                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3742                         or die_error(undef, "Open git-ls-tree failed");
3743                 my $line = <$fd>;
3744                 close $fd;
3745
3746                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3747                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3748                         die_error('404 Not Found', "File or directory for given base does not exist");
3749                 }
3750                 $type = $2;
3751                 $hash = $3;
3752         } else {
3753                 die_error('404 Not Found', "Not enough information to find object");
3754         }
3755
3756         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3757                                           hash=>$hash, hash_base=>$hash_base,
3758                                           file_name=>$file_name),
3759                              -status => '302 Found');
3760 }
3761
3762 sub git_blobdiff {
3763         my $format = shift || 'html';
3764
3765         my $fd;
3766         my @difftree;
3767         my %diffinfo;
3768         my $expires;
3769
3770         # preparing $fd and %diffinfo for git_patchset_body
3771         # new style URI
3772         if (defined $hash_base && defined $hash_parent_base) {
3773                 if (defined $file_name) {
3774                         # read raw output
3775                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3776                                 $hash_parent_base, $hash_base,
3777                                 "--", $file_name
3778                                 or die_error(undef, "Open git-diff-tree failed");
3779                         @difftree = map { chomp; $_ } <$fd>;
3780                         close $fd
3781                                 or die_error(undef, "Reading git-diff-tree failed");
3782                         @difftree
3783                                 or die_error('404 Not Found', "Blob diff not found");
3784
3785                 } elsif (defined $hash &&
3786                          $hash =~ /[0-9a-fA-F]{40}/) {
3787                         # try to find filename from $hash
3788
3789                         # read filtered raw output
3790                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3791                                 $hash_parent_base, $hash_base, "--"
3792                                 or die_error(undef, "Open git-diff-tree failed");
3793                         @difftree =
3794                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3795                                 # $hash == to_id
3796                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3797                                 map { chomp; $_ } <$fd>;
3798                         close $fd
3799                                 or die_error(undef, "Reading git-diff-tree failed");
3800                         @difftree
3801                                 or die_error('404 Not Found', "Blob diff not found");
3802
3803                 } else {
3804                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3805                 }
3806
3807                 if (@difftree > 1) {
3808                         die_error('404 Not Found', "Ambiguous blob diff specification");
3809                 }
3810
3811                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3812                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3813                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3814
3815                 $hash_parent ||= $diffinfo{'from_id'};
3816                 $hash        ||= $diffinfo{'to_id'};
3817
3818                 # non-textual hash id's can be cached
3819                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3820                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3821                         $expires = '+1d';
3822                 }
3823
3824                 # open patch output
3825                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3826                         '-p', $hash_parent_base, $hash_base,
3827                         "--", $file_name
3828                         or die_error(undef, "Open git-diff-tree failed");
3829         }
3830
3831         # old/legacy style URI
3832         if (!%diffinfo && # if new style URI failed
3833             defined $hash && defined $hash_parent) {
3834                 # fake git-diff-tree raw output
3835                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3836                 $diffinfo{'from_id'} = $hash_parent;
3837                 $diffinfo{'to_id'}   = $hash;
3838                 if (defined $file_name) {
3839                         if (defined $file_parent) {
3840                                 $diffinfo{'status'} = '2';
3841                                 $diffinfo{'from_file'} = $file_parent;
3842                                 $diffinfo{'to_file'}   = $file_name;
3843                         } else { # assume not renamed
3844                                 $diffinfo{'status'} = '1';
3845                                 $diffinfo{'from_file'} = $file_name;
3846                                 $diffinfo{'to_file'}   = $file_name;
3847                         }
3848                 } else { # no filename given
3849                         $diffinfo{'status'} = '2';
3850                         $diffinfo{'from_file'} = $hash_parent;
3851                         $diffinfo{'to_file'}   = $hash;
3852                 }
3853
3854                 # non-textual hash id's can be cached
3855                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3856                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3857                         $expires = '+1d';
3858                 }
3859
3860                 # open patch output
3861                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3862                         $hash_parent, $hash, "--"
3863                         or die_error(undef, "Open git-diff failed");
3864         } else  {
3865                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3866                         unless %diffinfo;
3867         }
3868
3869         # header
3870         if ($format eq 'html') {
3871                 my $formats_nav =
3872                         $cgi->a({-href => href(action=>"blobdiff_plain",
3873                                                hash=>$hash, hash_parent=>$hash_parent,
3874                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3875                                                file_name=>$file_name, file_parent=>$file_parent)},
3876                                 "raw");
3877                 git_header_html(undef, $expires);
3878                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3879                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3880                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3881                 } else {
3882                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3883                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3884                 }
3885                 if (defined $file_name) {
3886                         git_print_page_path($file_name, "blob", $hash_base);
3887                 } else {
3888                         print "<div class=\"page_path\"></div>\n";
3889                 }
3890
3891         } elsif ($format eq 'plain') {
3892                 print $cgi->header(
3893                         -type => 'text/plain',
3894                         -charset => 'utf-8',
3895                         -expires => $expires,
3896                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3897
3898                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3899
3900         } else {
3901                 die_error(undef, "Unknown blobdiff format");
3902         }
3903
3904         # patch
3905         if ($format eq 'html') {
3906                 print "<div class=\"page_body\">\n";
3907
3908                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3909                 close $fd;
3910
3911                 print "</div>\n"; # class="page_body"
3912                 git_footer_html();
3913
3914         } else {
3915                 while (my $line = <$fd>) {
3916                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
3917                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
3918
3919                         print $line;
3920
3921                         last if $line =~ m!^\+\+\+!;
3922                 }
3923                 local $/ = undef;
3924                 print <$fd>;
3925                 close $fd;
3926         }
3927 }
3928
3929 sub git_blobdiff_plain {
3930         git_blobdiff('plain');
3931 }
3932
3933 sub git_commitdiff {
3934         my $format = shift || 'html';
3935         $hash ||= $hash_base || "HEAD";
3936         my %co = parse_commit($hash);
3937         if (!%co) {
3938                 die_error(undef, "Unknown commit object");
3939         }
3940
3941         # we need to prepare $formats_nav before any parameter munging
3942         my $formats_nav;
3943         if ($format eq 'html') {
3944                 $formats_nav =
3945                         $cgi->a({-href => href(action=>"commitdiff_plain",
3946                                                hash=>$hash, hash_parent=>$hash_parent)},
3947                                 "raw");
3948
3949                 if (defined $hash_parent) {
3950                         # commitdiff with two commits given
3951                         my $hash_parent_short = $hash_parent;
3952                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3953                                 $hash_parent_short = substr($hash_parent, 0, 7);
3954                         }
3955                         $formats_nav .=
3956                                 ' (from: ' .
3957                                 $cgi->a({-href => href(action=>"commitdiff",
3958                                                        hash=>$hash_parent)},
3959                                         esc_html($hash_parent_short)) .
3960                                 ')';
3961                 } elsif (!$co{'parent'}) {
3962                         # --root commitdiff
3963                         $formats_nav .= ' (initial)';
3964                 } elsif (scalar @{$co{'parents'}} == 1) {
3965                         # single parent commit
3966                         $formats_nav .=
3967                                 ' (parent: ' .
3968                                 $cgi->a({-href => href(action=>"commitdiff",
3969                                                        hash=>$co{'parent'})},
3970                                         esc_html(substr($co{'parent'}, 0, 7))) .
3971                                 ')';
3972                 } else {
3973                         # merge commit
3974                         $formats_nav .=
3975                                 ' (merge: ' .
3976                                 join(' ', map {
3977                                         $cgi->a({-href => href(action=>"commitdiff",
3978                                                                hash=>$_)},
3979                                                 esc_html(substr($_, 0, 7)));
3980                                 } @{$co{'parents'}} ) .
3981                                 ')';
3982                 }
3983         }
3984
3985         if (!defined $hash_parent) {
3986                 $hash_parent = $co{'parent'} || '--root';
3987         }
3988
3989         # read commitdiff
3990         my $fd;
3991         my @difftree;
3992         if ($format eq 'html') {
3993                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3994                         "--no-commit-id", "--patch-with-raw", "--full-index",
3995                         $hash_parent, $hash, "--"
3996                         or die_error(undef, "Open git-diff-tree failed");
3997
3998                 while (my $line = <$fd>) {
3999                         chomp $line;
4000                         # empty line ends raw part of diff-tree output
4001                         last unless $line;
4002                         push @difftree, $line;
4003                 }
4004
4005         } elsif ($format eq 'plain') {
4006                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4007                         '-p', $hash_parent, $hash, "--"
4008                         or die_error(undef, "Open git-diff-tree failed");
4009
4010         } else {
4011                 die_error(undef, "Unknown commitdiff format");
4012         }
4013
4014         # non-textual hash id's can be cached
4015         my $expires;
4016         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4017                 $expires = "+1d";
4018         }
4019
4020         # write commit message
4021         if ($format eq 'html') {
4022                 my $refs = git_get_references();
4023                 my $ref = format_ref_marker($refs, $co{'id'});
4024
4025                 git_header_html(undef, $expires);
4026                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4027                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4028                 git_print_authorship(\%co);
4029                 print "<div class=\"page_body\">\n";
4030                 if (@{$co{'comment'}} > 1) {
4031                         print "<div class=\"log\">\n";
4032                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4033                         print "</div>\n"; # class="log"
4034                 }
4035
4036         } elsif ($format eq 'plain') {
4037                 my $refs = git_get_references("tags");
4038                 my $tagname = git_get_rev_name_tags($hash);
4039                 my $filename = basename($project) . "-$hash.patch";
4040
4041                 print $cgi->header(
4042                         -type => 'text/plain',
4043                         -charset => 'utf-8',
4044                         -expires => $expires,
4045                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4046                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4047                 print <<TEXT;
4048 From: $co{'author'}
4049 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4050 Subject: $co{'title'}
4051 TEXT
4052                 print "X-Git-Tag: $tagname\n" if $tagname;
4053                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4054
4055                 foreach my $line (@{$co{'comment'}}) {
4056                         print "$line\n";
4057                 }
4058                 print "---\n\n";
4059         }
4060
4061         # write patch
4062         if ($format eq 'html') {
4063                 git_difftree_body(\@difftree, $hash, $hash_parent);
4064                 print "<br/>\n";
4065
4066                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4067                 close $fd;
4068                 print "</div>\n"; # class="page_body"
4069                 git_footer_html();
4070
4071         } elsif ($format eq 'plain') {
4072                 local $/ = undef;
4073                 print <$fd>;
4074                 close $fd
4075                         or print "Reading git-diff-tree failed\n";
4076         }
4077 }
4078
4079 sub git_commitdiff_plain {
4080         git_commitdiff('plain');
4081 }
4082
4083 sub git_history {
4084         if (!defined $hash_base) {
4085                 $hash_base = git_get_head_hash($project);
4086         }
4087         if (!defined $page) {
4088                 $page = 0;
4089         }
4090         my $ftype;
4091         my %co = parse_commit($hash_base);
4092         if (!%co) {
4093                 die_error(undef, "Unknown commit object");
4094         }
4095
4096         my $refs = git_get_references();
4097         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4098
4099         if (!defined $hash && defined $file_name) {
4100                 $hash = git_get_hash_by_path($hash_base, $file_name);
4101         }
4102         if (defined $hash) {
4103                 $ftype = git_get_type($hash);
4104         }
4105
4106         open my $fd, "-|",
4107                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
4108                         or die_error(undef, "Open git-rev-list-failed");
4109         my @revlist = map { chomp; $_ } <$fd>;
4110         close $fd
4111                 or die_error(undef, "Reading git-rev-list failed");
4112
4113         my $paging_nav = '';
4114         if ($page > 0) {
4115                 $paging_nav .=
4116                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4117                                                file_name=>$file_name)},
4118                                 "first");
4119                 $paging_nav .= " &sdot; " .
4120                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4121                                                file_name=>$file_name, page=>$page-1),
4122                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4123         } else {
4124                 $paging_nav .= "first";
4125                 $paging_nav .= " &sdot; prev";
4126         }
4127         if ($#revlist >= (100 * ($page+1)-1)) {
4128                 $paging_nav .= " &sdot; " .
4129                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4130                                                file_name=>$file_name, page=>$page+1),
4131                                  -accesskey => "n", -title => "Alt-n"}, "next");
4132         } else {
4133                 $paging_nav .= " &sdot; next";
4134         }
4135         my $next_link = '';
4136         if ($#revlist >= (100 * ($page+1)-1)) {
4137                 $next_link =
4138                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4139                                                file_name=>$file_name, page=>$page+1),
4140                                  -title => "Alt-n"}, "next");
4141         }
4142
4143         git_header_html();
4144         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4145         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4146         git_print_page_path($file_name, $ftype, $hash_base);
4147
4148         git_history_body(\@revlist, ($page * 100), $#revlist,
4149                          $refs, $hash_base, $ftype, $next_link);
4150
4151         git_footer_html();
4152 }
4153
4154 sub git_search {
4155         if (!defined $searchtext) {
4156                 die_error(undef, "Text field empty");
4157         }
4158         if (!defined $hash) {
4159                 $hash = git_get_head_hash($project);
4160         }
4161         my %co = parse_commit($hash);
4162         if (!%co) {
4163                 die_error(undef, "Unknown commit object");
4164         }
4165
4166         $searchtype ||= 'commit';
4167         if ($searchtype eq 'pickaxe') {
4168                 # pickaxe may take all resources of your box and run for several minutes
4169                 # with every query - so decide by yourself how public you make this feature
4170                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4171                 if (!$have_pickaxe) {
4172                         die_error('403 Permission denied', "Permission denied");
4173                 }
4174         }
4175
4176         git_header_html();
4177         git_print_page_nav('','', $hash,$co{'tree'},$hash);
4178         git_print_header_div('commit', esc_html($co{'title'}), $hash);
4179
4180         print "<table cellspacing=\"0\">\n";
4181         my $alternate = 1;
4182         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4183                 my $greptype;
4184                 if ($searchtype eq 'commit') {
4185                         $greptype = "--grep=";
4186                 } elsif ($searchtype eq 'author') {
4187                         $greptype = "--author=";
4188                 } elsif ($searchtype eq 'committer') {
4189                         $greptype = "--committer=";
4190                 }
4191                 $/ = "\0";
4192                 open my $fd, "-|", git_cmd(), "rev-list",
4193                         "--header", "--parents", ($greptype . $searchtext),
4194                          $hash, "--"
4195                         or next;
4196                 while (my $commit_text = <$fd>) {
4197                         my @commit_lines = split "\n", $commit_text;
4198                         my %co = parse_commit(undef, \@commit_lines);
4199                         if (!%co) {
4200                                 next;
4201                         }
4202                         if ($alternate) {
4203                                 print "<tr class=\"dark\">\n";
4204                         } else {
4205                                 print "<tr class=\"light\">\n";
4206                         }
4207                         $alternate ^= 1;
4208                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4209                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4210                               "<td>" .
4211                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
4212                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4213                         my $comment = $co{'comment'};
4214                         foreach my $line (@$comment) {
4215                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
4216                                         my $lead = esc_html($1) || "";
4217                                         $lead = chop_str($lead, 30, 10);
4218                                         my $match = esc_html($2) || "";
4219                                         my $trail = esc_html($3) || "";
4220                                         $trail = chop_str($trail, 30, 10);
4221                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
4222                                         print chop_str($text, 80, 5) . "<br/>\n";
4223                                 }
4224                         }
4225                         print "</td>\n" .
4226                               "<td class=\"link\">" .
4227                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4228                               " | " .
4229                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4230                         print "</td>\n" .
4231                               "</tr>\n";
4232                 }
4233                 close $fd;
4234         }
4235
4236         if ($searchtype eq 'pickaxe') {
4237                 $/ = "\n";
4238                 my $git_command = git_cmd_str();
4239                 open my $fd, "-|", "$git_command rev-list $hash | " .
4240                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4241                 undef %co;
4242                 my @files;
4243                 while (my $line = <$fd>) {
4244                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4245                                 my %set;
4246                                 $set{'file'} = $6;
4247                                 $set{'from_id'} = $3;
4248                                 $set{'to_id'} = $4;
4249                                 $set{'id'} = $set{'to_id'};
4250                                 if ($set{'id'} =~ m/0{40}/) {
4251                                         $set{'id'} = $set{'from_id'};
4252                                 }
4253                                 if ($set{'id'} =~ m/0{40}/) {
4254                                         next;
4255                                 }
4256                                 push @files, \%set;
4257                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4258                                 if (%co) {
4259                                         if ($alternate) {
4260                                                 print "<tr class=\"dark\">\n";
4261                                         } else {
4262                                                 print "<tr class=\"light\">\n";
4263                                         }
4264                                         $alternate ^= 1;
4265                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4266                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4267                                               "<td>" .
4268                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4269                                                       -class => "list subject"},
4270                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4271                                         while (my $setref = shift @files) {
4272                                                 my %set = %$setref;
4273                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4274                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4275                                                               -class => "list"},
4276                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4277                                                       "<br/>\n";
4278                                         }
4279                                         print "</td>\n" .
4280                                               "<td class=\"link\">" .
4281                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4282                                               " | " .
4283                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4284                                         print "</td>\n" .
4285                                               "</tr>\n";
4286                                 }
4287                                 %co = parse_commit($1);
4288                         }
4289                 }
4290                 close $fd;
4291         }
4292         print "</table>\n";
4293         git_footer_html();
4294 }
4295
4296 sub git_search_help {
4297         git_header_html();
4298         git_print_page_nav('','', $hash,$hash,$hash);
4299         print <<EOT;
4300 <dl>
4301 <dt><b>commit</b></dt>
4302 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4303 <dt><b>author</b></dt>
4304 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4305 <dt><b>committer</b></dt>
4306 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4307 EOT
4308         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4309         if ($have_pickaxe) {
4310                 print <<EOT;
4311 <dt><b>pickaxe</b></dt>
4312 <dd>All commits that caused the string to appear or disappear from any file (changes that
4313 added, removed or "modified" the string) will be listed. This search can take a while and
4314 takes a lot of strain on the server, so please use it wisely.</dd>
4315 EOT
4316         }
4317         print "</dl>\n";
4318         git_footer_html();
4319 }
4320
4321 sub git_shortlog {
4322         my $head = git_get_head_hash($project);
4323         if (!defined $hash) {
4324                 $hash = $head;
4325         }
4326         if (!defined $page) {
4327                 $page = 0;
4328         }
4329         my $refs = git_get_references();
4330
4331         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4332         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
4333                 or die_error(undef, "Open git-rev-list failed");
4334         my @revlist = map { chomp; $_ } <$fd>;
4335         close $fd;
4336
4337         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
4338         my $next_link = '';
4339         if ($#revlist >= (100 * ($page+1)-1)) {
4340                 $next_link =
4341                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4342                                  -title => "Alt-n"}, "next");
4343         }
4344
4345
4346         git_header_html();
4347         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4348         git_print_header_div('summary', $project);
4349
4350         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
4351
4352         git_footer_html();
4353 }
4354
4355 ## ......................................................................
4356 ## feeds (RSS, Atom; OPML)
4357
4358 sub git_feed {
4359         my $format = shift || 'atom';
4360         my ($have_blame) = gitweb_check_feature('blame');
4361
4362         # Atom: http://www.atomenabled.org/developers/syndication/
4363         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4364         if ($format ne 'rss' && $format ne 'atom') {
4365                 die_error(undef, "Unknown web feed format");
4366         }
4367
4368         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4369         my $head = $hash || 'HEAD';
4370         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
4371                 $head, "--", (defined $file_name ? $file_name : ())
4372                 or die_error(undef, "Open git-rev-list failed");
4373         my @revlist = map { chomp; $_ } <$fd>;
4374         close $fd or die_error(undef, "Reading git-rev-list failed");
4375
4376         my %latest_commit;
4377         my %latest_date;
4378         my $content_type = "application/$format+xml";
4379         if (defined $cgi->http('HTTP_ACCEPT') &&
4380                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4381                 # browser (feed reader) prefers text/xml
4382                 $content_type = 'text/xml';
4383         }
4384         if (defined($revlist[0])) {
4385                 %latest_commit = parse_commit($revlist[0]);
4386                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4387                 print $cgi->header(
4388                         -type => $content_type,
4389                         -charset => 'utf-8',
4390                         -last_modified => $latest_date{'rfc2822'});
4391         } else {
4392                 print $cgi->header(
4393                         -type => $content_type,
4394                         -charset => 'utf-8');
4395         }
4396
4397         # Optimization: skip generating the body if client asks only
4398         # for Last-Modified date.
4399         return if ($cgi->request_method() eq 'HEAD');
4400
4401         # header variables
4402         my $title = "$site_name - $project/$action";
4403         my $feed_type = 'log';
4404         if (defined $hash) {
4405                 $title .= " - '$hash'";
4406                 $feed_type = 'branch log';
4407                 if (defined $file_name) {
4408                         $title .= " :: $file_name";
4409                         $feed_type = 'history';
4410                 }
4411         } elsif (defined $file_name) {
4412                 $title .= " - $file_name";
4413                 $feed_type = 'history';
4414         }
4415         $title .= " $feed_type";
4416         my $descr = git_get_project_description($project);
4417         if (defined $descr) {
4418                 $descr = esc_html($descr);
4419         } else {
4420                 $descr = "$project " .
4421                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4422                          " feed";
4423         }
4424         my $owner = git_get_project_owner($project);
4425         $owner = esc_html($owner);
4426
4427         #header
4428         my $alt_url;
4429         if (defined $file_name) {
4430                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4431         } elsif (defined $hash) {
4432                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4433         } else {
4434                 $alt_url = href(-full=>1, action=>"summary");
4435         }
4436         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4437         if ($format eq 'rss') {
4438                 print <<XML;
4439 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4440 <channel>
4441 XML
4442                 print "<title>$title</title>\n" .
4443                       "<link>$alt_url</link>\n" .
4444                       "<description>$descr</description>\n" .
4445                       "<language>en</language>\n";
4446         } elsif ($format eq 'atom') {
4447                 print <<XML;
4448 <feed xmlns="http://www.w3.org/2005/Atom">
4449 XML
4450                 print "<title>$title</title>\n" .
4451                       "<subtitle>$descr</subtitle>\n" .
4452                       '<link rel="alternate" type="text/html" href="' .
4453                       $alt_url . '" />' . "\n" .
4454                       '<link rel="self" type="' . $content_type . '" href="' .
4455                       $cgi->self_url() . '" />' . "\n" .
4456                       "<id>" . href(-full=>1) . "</id>\n" .
4457                       # use project owner for feed author
4458                       "<author><name>$owner</name></author>\n";
4459                 if (defined $favicon) {
4460                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4461                 }
4462                 if (defined $logo_url) {
4463                         # not twice as wide as tall: 72 x 27 pixels
4464                         print "<logo>" . esc_url($logo) . "</logo>\n";
4465                 }
4466                 if (! %latest_date) {
4467                         # dummy date to keep the feed valid until commits trickle in:
4468                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4469                 } else {
4470                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4471                 }
4472         }
4473
4474         # contents
4475         for (my $i = 0; $i <= $#revlist; $i++) {
4476                 my $commit = $revlist[$i];
4477                 my %co = parse_commit($commit);
4478                 # we read 150, we always show 30 and the ones more recent than 48 hours
4479                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4480                         last;
4481                 }
4482                 my %cd = parse_date($co{'author_epoch'});
4483
4484                 # get list of changed files
4485                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4486                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4487                         or next;
4488                 my @difftree = map { chomp; $_ } <$fd>;
4489                 close $fd
4490                         or next;
4491
4492                 # print element (entry, item)
4493                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4494                 if ($format eq 'rss') {
4495                         print "<item>\n" .
4496                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4497                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4498                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4499                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4500                               "<link>$co_url</link>\n" .
4501                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4502                               "<content:encoded>" .
4503                               "<![CDATA[\n";
4504                 } elsif ($format eq 'atom') {
4505                         print "<entry>\n" .
4506                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4507                               "<updated>$cd{'iso-8601'}</updated>\n" .
4508                               "<author>\n" .
4509                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4510                         if ($co{'author_email'}) {
4511                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4512                         }
4513                         print "</author>\n" .
4514                               # use committer for contributor
4515                               "<contributor>\n" .
4516                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4517                         if ($co{'committer_email'}) {
4518                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4519                         }
4520                         print "</contributor>\n" .
4521                               "<published>$cd{'iso-8601'}</published>\n" .
4522                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4523                               "<id>$co_url</id>\n" .
4524                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4525                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4526                 }
4527                 my $comment = $co{'comment'};
4528                 print "<pre>\n";
4529                 foreach my $line (@$comment) {
4530                         $line = esc_html($line);
4531                         print "$line\n";
4532                 }
4533                 print "</pre><ul>\n";
4534                 foreach my $difftree_line (@difftree) {
4535                         my %difftree = parse_difftree_raw_line($difftree_line);
4536                         next if !$difftree{'from_id'};
4537
4538                         my $file = $difftree{'file'} || $difftree{'to_file'};
4539
4540                         print "<li>" .
4541                               "[" .
4542                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4543                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4544                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4545                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4546                                       -title => "diff"}, 'D');
4547                         if ($have_blame) {
4548                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4549                                                              file_name=>$file, hash_base=>$commit),
4550                                               -title => "blame"}, 'B');
4551                         }
4552                         # if this is not a feed of a file history
4553                         if (!defined $file_name || $file_name ne $file) {
4554                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4555                                                              file_name=>$file, hash=>$commit),
4556                                               -title => "history"}, 'H');
4557                         }
4558                         $file = esc_path($file);
4559                         print "] ".
4560                               "$file</li>\n";
4561                 }
4562                 if ($format eq 'rss') {
4563                         print "</ul>]]>\n" .
4564                               "</content:encoded>\n" .
4565                               "</item>\n";
4566                 } elsif ($format eq 'atom') {
4567                         print "</ul>\n</div>\n" .
4568                               "</content>\n" .
4569                               "</entry>\n";
4570                 }
4571         }
4572
4573         # end of feed
4574         if ($format eq 'rss') {
4575                 print "</channel>\n</rss>\n";
4576         }       elsif ($format eq 'atom') {
4577                 print "</feed>\n";
4578         }
4579 }
4580
4581 sub git_rss {
4582         git_feed('rss');
4583 }
4584
4585 sub git_atom {
4586         git_feed('atom');
4587 }
4588
4589 sub git_opml {
4590         my @list = git_get_projects_list();
4591
4592         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4593         print <<XML;
4594 <?xml version="1.0" encoding="utf-8"?>
4595 <opml version="1.0">
4596 <head>
4597   <title>$site_name OPML Export</title>
4598 </head>
4599 <body>
4600 <outline text="git RSS feeds">
4601 XML
4602
4603         foreach my $pr (@list) {
4604                 my %proj = %$pr;
4605                 my $head = git_get_head_hash($proj{'path'});
4606                 if (!defined $head) {
4607                         next;
4608                 }
4609                 $git_dir = "$projectroot/$proj{'path'}";
4610                 my %co = parse_commit($head);
4611                 if (!%co) {
4612                         next;
4613                 }
4614
4615                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4616                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4617                 my $html = "$my_url?p=$proj{'path'};a=summary";
4618                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4619         }
4620         print <<XML;
4621 </outline>
4622 </body>
4623 </opml>
4624 XML
4625 }