gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # show repository only if this file exists
  75 # (only effective if this variable evaluates to true)
  76 our $export_ok = "++GITWEB_EXPORT_OK++";
  77
  78 # only allow viewing of repositories also shown on the overview page
  79 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  80
  81 # list of git base URLs used for URL to where fetch project from,
  82 # i.e. full URL is "$git_base_url/$project"
  83 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  84
  85 # default blob_plain mimetype and default charset for text/plain blob
  86 our $default_blob_plain_mimetype = 'text/plain';
  87 our $default_text_plain_charset  = undef;
  88
  89 # file to use for guessing MIME types before trying /etc/mime.types
  90 # (relative to the current git repository)
  91 our $mimetypes_file = undef;
  92
  93 # You define site-wide feature defaults here; override them with
  94 # $GITWEB_CONFIG as necessary.
  95 our %feature = (
  96         # feature => {
  97         #       'sub' => feature-sub (subroutine),
  98         #       'override' => allow-override (boolean),
  99         #       'default' => [ default options...] (array reference)}
 100         #
 101         # if feature is overridable (it means that allow-override has true value,
 102         # then feature-sub will be called with default options as parameters;
 103         # return value of feature-sub indicates if to enable specified feature
 104         #
 105         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 106
 107         # Enable the 'blame' blob view, showing the last commit that modified
 108         # each line in the file. This can be very CPU-intensive.
 109
 110         # To enable system wide have in $GITWEB_CONFIG
 111         # $feature{'blame'}{'default'} = [1];
 112         # To have project specific config enable override in $GITWEB_CONFIG
 113         # $feature{'blame'}{'override'} = 1;
 114         # and in project config gitweb.blame = 0|1;
 115         'blame' => {
 116                 'sub' => \&feature_blame,
 117                 'override' => 0,
 118                 'default' => [0]},
 119
 120         # Enable the 'snapshot' link, providing a compressed tarball of any
 121         # tree. This can potentially generate high traffic if you have large
 122         # project.
 123
 124         # To disable system wide have in $GITWEB_CONFIG
 125         # $feature{'snapshot'}{'default'} = [undef];
 126         # To have project specific config enable override in $GITWEB_CONFIG
 127         # $feature{'snapshot'}{'override'} = 1;
 128         # and in project config gitweb.snapshot = none|gzip|bzip2;
 129         'snapshot' => {
 130                 'sub' => \&feature_snapshot,
 131                 'override' => 0,
 132                 #         => [content-encoding, suffix, program]
 133                 'default' => ['x-gzip', 'gz', 'gzip']},
 134
 135         # Enable text search, which will list the commits which match author,
 136         # committer or commit text to a given string.  Enabled by default.
 137         'search' => {
 138                 'override' => 0,
 139                 'default' => [1]},
 140
 141         # Enable the pickaxe search, which will list the commits that modified
 142         # a given string in a file. This can be practical and quite faster
 143         # alternative to 'blame', but still potentially CPU-intensive.
 144
 145         # To enable system wide have in $GITWEB_CONFIG
 146         # $feature{'pickaxe'}{'default'} = [1];
 147         # To have project specific config enable override in $GITWEB_CONFIG
 148         # $feature{'pickaxe'}{'override'} = 1;
 149         # and in project config gitweb.pickaxe = 0|1;
 150         'pickaxe' => {
 151                 'sub' => \&feature_pickaxe,
 152                 'override' => 0,
 153                 'default' => [1]},
 154
 155         # Make gitweb use an alternative format of the URLs which can be
 156         # more readable and natural-looking: project name is embedded
 157         # directly in the path and the query string contains other
 158         # auxiliary information. All gitweb installations recognize
 159         # URL in either format; this configures in which formats gitweb
 160         # generates links.
 161
 162         # To enable system wide have in $GITWEB_CONFIG
 163         # $feature{'pathinfo'}{'default'} = [1];
 164         # Project specific override is not supported.
 165
 166         # Note that you will need to change the default location of CSS,
 167         # favicon, logo and possibly other files to an absolute URL. Also,
 168         # if gitweb.cgi serves as your indexfile, you will need to force
 169         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 170         'pathinfo' => {
 171                 'override' => 0,
 172                 'default' => [0]},
 173
 174         # Make gitweb consider projects in project root subdirectories
 175         # to be forks of existing projects. Given project $projname.git,
 176         # projects matching $projname/*.git will not be shown in the main
 177         # projects list, instead a '+' mark will be added to $projname
 178         # there and a 'forks' view will be enabled for the project, listing
 179         # all the forks. If project list is taken from a file, forks have
 180         # to be listed after the main project.
 181
 182         # To enable system wide have in $GITWEB_CONFIG
 183         # $feature{'forks'}{'default'} = [1];
 184         # Project specific override is not supported.
 185         'forks' => {
 186                 'override' => 0,
 187                 'default' => [0]},
 188 );
 189
 190 sub gitweb_check_feature {
 191         my ($name) = @_;
 192         return unless exists $feature{$name};
 193         my ($sub, $override, @defaults) = (
 194                 $feature{$name}{'sub'},
 195                 $feature{$name}{'override'},
 196                 @{$feature{$name}{'default'}});
 197         if (!$override) { return @defaults; }
 198         if (!defined $sub) {
 199                 warn "feature $name is not overrideable";
 200                 return @defaults;
 201         }
 202         return $sub->(@defaults);
 203 }
 204
 205 sub feature_blame {
 206         my ($val) = git_get_project_config('blame', '--bool');
 207
 208         if ($val eq 'true') {
 209                 return 1;
 210         } elsif ($val eq 'false') {
 211                 return 0;
 212         }
 213
 214         return $_[0];
 215 }
 216
 217 sub feature_snapshot {
 218         my ($ctype, $suffix, $command) = @_;
 219
 220         my ($val) = git_get_project_config('snapshot');
 221
 222         if ($val eq 'gzip') {
 223                 return ('x-gzip', 'gz', 'gzip');
 224         } elsif ($val eq 'bzip2') {
 225                 return ('x-bzip2', 'bz2', 'bzip2');
 226         } elsif ($val eq 'none') {
 227                 return ();
 228         }
 229
 230         return ($ctype, $suffix, $command);
 231 }
 232
 233 sub gitweb_have_snapshot {
 234         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 235         my $have_snapshot = (defined $ctype && defined $suffix);
 236
 237         return $have_snapshot;
 238 }
 239
 240 sub feature_pickaxe {
 241         my ($val) = git_get_project_config('pickaxe', '--bool');
 242
 243         if ($val eq 'true') {
 244                 return (1);
 245         } elsif ($val eq 'false') {
 246                 return (0);
 247         }
 248
 249         return ($_[0]);
 250 }
 251
 252 # checking HEAD file with -e is fragile if the repository was
 253 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 254 # and then pruned.
 255 sub check_head_link {
 256         my ($dir) = @_;
 257         my $headfile = "$dir/HEAD";
 258         return ((-e $headfile) ||
 259                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 260 }
 261
 262 sub check_export_ok {
 263         my ($dir) = @_;
 264         return (check_head_link($dir) &&
 265                 (!$export_ok || -e "$dir/$export_ok"));
 266 }
 267
 268 # rename detection options for git-diff and git-diff-tree
 269 # - default is '-M', with the cost proportional to
 270 #   (number of removed files) * (number of new files).
 271 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 272 #   (number of changed files + number of removed files) * (number of new files)
 273 # - even more costly is '-C', '--find-copies-harder' with cost
 274 #   (number of files in the original tree) * (number of new files)
 275 # - one might want to include '-B' option, e.g. '-B', '-M'
 276 our @diff_opts = ('-M'); # taken from git_commit
 277
 278 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 279 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 280
 281 # version of the core git binary
 282 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 283
 284 $projects_list ||= $projectroot;
 285
 286 # ======================================================================
 287 # input validation and dispatch
 288 our $action = $cgi->param('a');
 289 if (defined $action) {
 290         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 291                 die_error(undef, "Invalid action parameter");
 292         }
 293 }
 294
 295 # parameters which are pathnames
 296 our $project = $cgi->param('p');
 297 if (defined $project) {
 298         if (!validate_pathname($project) ||
 299             !(-d "$projectroot/$project") ||
 300             !check_head_link("$projectroot/$project") ||
 301             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 302             ($strict_export && !project_in_list($project))) {
 303                 undef $project;
 304                 die_error(undef, "No such project");
 305         }
 306 }
 307
 308 our $file_name = $cgi->param('f');
 309 if (defined $file_name) {
 310         if (!validate_pathname($file_name)) {
 311                 die_error(undef, "Invalid file parameter");
 312         }
 313 }
 314
 315 our $file_parent = $cgi->param('fp');
 316 if (defined $file_parent) {
 317         if (!validate_pathname($file_parent)) {
 318                 die_error(undef, "Invalid file parent parameter");
 319         }
 320 }
 321
 322 # parameters which are refnames
 323 our $hash = $cgi->param('h');
 324 if (defined $hash) {
 325         if (!validate_refname($hash)) {
 326                 die_error(undef, "Invalid hash parameter");
 327         }
 328 }
 329
 330 our $hash_parent = $cgi->param('hp');
 331 if (defined $hash_parent) {
 332         if (!validate_refname($hash_parent)) {
 333                 die_error(undef, "Invalid hash parent parameter");
 334         }
 335 }
 336
 337 our $hash_base = $cgi->param('hb');
 338 if (defined $hash_base) {
 339         if (!validate_refname($hash_base)) {
 340                 die_error(undef, "Invalid hash base parameter");
 341         }
 342 }
 343
 344 our $hash_parent_base = $cgi->param('hpb');
 345 if (defined $hash_parent_base) {
 346         if (!validate_refname($hash_parent_base)) {
 347                 die_error(undef, "Invalid hash parent base parameter");
 348         }
 349 }
 350
 351 # other parameters
 352 our $page = $cgi->param('pg');
 353 if (defined $page) {
 354         if ($page =~ m/[^0-9]/) {
 355                 die_error(undef, "Invalid page parameter");
 356         }
 357 }
 358
 359 our $searchtext = $cgi->param('s');
 360 if (defined $searchtext) {
 361         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 362                 die_error(undef, "Invalid search parameter");
 363         }
 364         if (length($searchtext) < 2) {
 365                 die_error(undef, "At least two characters are required for search parameter");
 366         }
 367         $searchtext = quotemeta $searchtext;
 368 }
 369
 370 our $searchtype = $cgi->param('st');
 371 if (defined $searchtype) {
 372         if ($searchtype =~ m/[^a-z]/) {
 373                 die_error(undef, "Invalid searchtype parameter");
 374         }
 375 }
 376
 377 # now read PATH_INFO and use it as alternative to parameters
 378 sub evaluate_path_info {
 379         return if defined $project;
 380         my $path_info = $ENV{"PATH_INFO"};
 381         return if !$path_info;
 382         $path_info =~ s,^/+,,;
 383         return if !$path_info;
 384         # find which part of PATH_INFO is project
 385         $project = $path_info;
 386         $project =~ s,/+$,,;
 387         while ($project && !check_head_link("$projectroot/$project")) {
 388                 $project =~ s,/*[^/]*$,,;
 389         }
 390         # validate project
 391         $project = validate_pathname($project);
 392         if (!$project ||
 393             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 394             ($strict_export && !project_in_list($project))) {
 395                 undef $project;
 396                 return;
 397         }
 398         # do not change any parameters if an action is given using the query string
 399         return if $action;
 400         $path_info =~ s,^$project/*,,;
 401         my ($refname, $pathname) = split(/:/, $path_info, 2);
 402         if (defined $pathname) {
 403                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 404                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 405                 $pathname =~ s,^/+,,;
 406                 if (!$pathname || substr($pathname, -1) eq "/") {
 407                         $action  ||= "tree";
 408                         $pathname =~ s,/$,,;
 409                 } else {
 410                         $action  ||= "blob_plain";
 411                 }
 412                 $hash_base ||= validate_refname($refname);
 413                 $file_name ||= validate_pathname($pathname);
 414         } elsif (defined $refname) {
 415                 # we got "project.git/branch"
 416                 $action ||= "shortlog";
 417                 $hash   ||= validate_refname($refname);
 418         }
 419 }
 420 evaluate_path_info();
 421
 422 # path to the current git repository
 423 our $git_dir;
 424 $git_dir = "$projectroot/$project" if $project;
 425
 426 # dispatch
 427 my %actions = (
 428         "blame" => \&git_blame2,
 429         "blobdiff" => \&git_blobdiff,
 430         "blobdiff_plain" => \&git_blobdiff_plain,
 431         "blob" => \&git_blob,
 432         "blob_plain" => \&git_blob_plain,
 433         "commitdiff" => \&git_commitdiff,
 434         "commitdiff_plain" => \&git_commitdiff_plain,
 435         "commit" => \&git_commit,
 436         "forks" => \&git_forks,
 437         "heads" => \&git_heads,
 438         "history" => \&git_history,
 439         "log" => \&git_log,
 440         "rss" => \&git_rss,
 441         "atom" => \&git_atom,
 442         "search" => \&git_search,
 443         "search_help" => \&git_search_help,
 444         "shortlog" => \&git_shortlog,
 445         "summary" => \&git_summary,
 446         "tag" => \&git_tag,
 447         "tags" => \&git_tags,
 448         "tree" => \&git_tree,
 449         "snapshot" => \&git_snapshot,
 450         "object" => \&git_object,
 451         # those below don't need $project
 452         "opml" => \&git_opml,
 453         "project_list" => \&git_project_list,
 454         "project_index" => \&git_project_index,
 455 );
 456
 457 if (defined $project) {
 458         $action ||= 'summary';
 459 } else {
 460         $action ||= 'project_list';
 461 }
 462 if (!defined($actions{$action})) {
 463         die_error(undef, "Unknown action");
 464 }
 465 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 466     !$project) {
 467         die_error(undef, "Project needed");
 468 }
 469 $actions{$action}->();
 470 exit;
 471
 472 ## ======================================================================
 473 ## action links
 474
 475 sub href(%) {
 476         my %params = @_;
 477         # default is to use -absolute url() i.e. $my_uri
 478         my $href = $params{-full} ? $my_url : $my_uri;
 479
 480         # XXX: Warning: If you touch this, check the search form for updating,
 481         # too.
 482
 483         my @mapping = (
 484                 project => "p",
 485                 action => "a",
 486                 file_name => "f",
 487                 file_parent => "fp",
 488                 hash => "h",
 489                 hash_parent => "hp",
 490                 hash_base => "hb",
 491                 hash_parent_base => "hpb",
 492                 page => "pg",
 493                 order => "o",
 494                 searchtext => "s",
 495                 searchtype => "st",
 496         );
 497         my %mapping = @mapping;
 498
 499         $params{'project'} = $project unless exists $params{'project'};
 500
 501         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 502         if ($use_pathinfo) {
 503                 # use PATH_INFO for project name
 504                 $href .= "/$params{'project'}" if defined $params{'project'};
 505                 delete $params{'project'};
 506
 507                 # Summary just uses the project path URL
 508                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 509                         delete $params{'action'};
 510                 }
 511         }
 512
 513         # now encode the parameters explicitly
 514         my @result = ();
 515         for (my $i = 0; $i < @mapping; $i += 2) {
 516                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 517                 if (defined $params{$name}) {
 518                         push @result, $symbol . "=" . esc_param($params{$name});
 519                 }
 520         }
 521         $href .= "?" . join(';', @result) if scalar @result;
 522
 523         return $href;
 524 }
 525
 526
 527 ## ======================================================================
 528 ## validation, quoting/unquoting and escaping
 529
 530 sub validate_pathname {
 531         my $input = shift || return undef;
 532
 533         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 534         # at the beginning, at the end, and between slashes.
 535         # also this catches doubled slashes
 536         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 537                 return undef;
 538         }
 539         # no null characters
 540         if ($input =~ m!\0!) {
 541                 return undef;
 542         }
 543         return $input;
 544 }
 545
 546 sub validate_refname {
 547         my $input = shift || return undef;
 548
 549         # textual hashes are O.K.
 550         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 551                 return $input;
 552         }
 553         # it must be correct pathname
 554         $input = validate_pathname($input)
 555                 or return undef;
 556         # restrictions on ref name according to git-check-ref-format
 557         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 558                 return undef;
 559         }
 560         return $input;
 561 }
 562
 563 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 564 sub to_utf8 {
 565         my $str = shift;
 566         return decode("utf8", $str, Encode::FB_DEFAULT);
 567 }
 568
 569 # quote unsafe chars, but keep the slash, even when it's not
 570 # correct, but quoted slashes look too horrible in bookmarks
 571 sub esc_param {
 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 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 580 sub esc_url {
 581         my $str = shift;
 582         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 583         $str =~ s/\+/%2B/g;
 584         $str =~ s/ /\+/g;
 585         return $str;
 586 }
 587
 588 # replace invalid utf8 character with SUBSTITUTION sequence
 589 sub esc_html ($;%) {
 590         my $str = shift;
 591         my %opts = @_;
 592
 593         $str = to_utf8($str);
 594         $str = $cgi->escapeHTML($str);
 595         if ($opts{'-nbsp'}) {
 596                 $str =~ s/ /&nbsp;/g;
 597         }
 598         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 599         return $str;
 600 }
 601
 602 # quote control characters and escape filename to HTML
 603 sub esc_path {
 604         my $str = shift;
 605         my %opts = @_;
 606
 607         $str = to_utf8($str);
 608         $str = $cgi->escapeHTML($str);
 609         if ($opts{'-nbsp'}) {
 610                 $str =~ s/ /&nbsp;/g;
 611         }
 612         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 613         return $str;
 614 }
 615
 616 # Make control characters "printable", using character escape codes (CEC)
 617 sub quot_cec {
 618         my $cntrl = shift;
 619         my %es = ( # character escape codes, aka escape sequences
 620                    "\t" => '\t',   # tab            (HT)
 621                    "\n" => '\n',   # line feed      (LF)
 622                    "\r" => '\r',   # carrige return (CR)
 623                    "\f" => '\f',   # form feed      (FF)
 624                    "\b" => '\b',   # backspace      (BS)
 625                    "\a" => '\a',   # alarm (bell)   (BEL)
 626                    "\e" => '\e',   # escape         (ESC)
 627                    "\013" => '\v', # vertical tab   (VT)
 628                    "\000" => '\0', # nul character  (NUL)
 629                    );
 630         my $chr = ( (exists $es{$cntrl})
 631                     ? $es{$cntrl}
 632                     : sprintf('\%03o', ord($cntrl)) );
 633         return "<span class=\"cntrl\">$chr</span>";
 634 }
 635
 636 # Alternatively use unicode control pictures codepoints,
 637 # Unicode "printable representation" (PR)
 638 sub quot_upr {
 639         my $cntrl = shift;
 640         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 641         return "<span class=\"cntrl\">$chr</span>";
 642 }
 643
 644 # git may return quoted and escaped filenames
 645 sub unquote {
 646         my $str = shift;
 647
 648         sub unq {
 649                 my $seq = shift;
 650                 my %es = ( # character escape codes, aka escape sequences
 651                         't' => "\t",   # tab            (HT, TAB)
 652                         'n' => "\n",   # newline        (NL)
 653                         'r' => "\r",   # return         (CR)
 654                         'f' => "\f",   # form feed      (FF)
 655                         'b' => "\b",   # backspace      (BS)
 656                         'a' => "\a",   # alarm (bell)   (BEL)
 657                         'e' => "\e",   # escape         (ESC)
 658                         'v' => "\013", # vertical tab   (VT)
 659                 );
 660
 661                 if ($seq =~ m/^[0-7]{1,3}$/) {
 662                         # octal char sequence
 663                         return chr(oct($seq));
 664                 } elsif (exists $es{$seq}) {
 665                         # C escape sequence, aka character escape code
 666                         return $es{$seq}
 667                 }
 668                 # quoted ordinary character
 669                 return $seq;
 670         }
 671
 672         if ($str =~ m/^"(.*)"$/) {
 673                 # needs unquoting
 674                 $str = $1;
 675                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 676         }
 677         return $str;
 678 }
 679
 680 # escape tabs (convert tabs to spaces)
 681 sub untabify {
 682         my $line = shift;
 683
 684         while ((my $pos = index($line, "\t")) != -1) {
 685                 if (my $count = (8 - ($pos % 8))) {
 686                         my $spaces = ' ' x $count;
 687                         $line =~ s/\t/$spaces/;
 688                 }
 689         }
 690
 691         return $line;
 692 }
 693
 694 sub project_in_list {
 695         my $project = shift;
 696         my @list = git_get_projects_list();
 697         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 698 }
 699
 700 ## ----------------------------------------------------------------------
 701 ## HTML aware string manipulation
 702
 703 sub chop_str {
 704         my $str = shift;
 705         my $len = shift;
 706         my $add_len = shift || 10;
 707
 708         # allow only $len chars, but don't cut a word if it would fit in $add_len
 709         # if it doesn't fit, cut it if it's still longer than the dots we would add
 710         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 711         my $body = $1;
 712         my $tail = $2;
 713         if (length($tail) > 4) {
 714                 $tail = " ...";
 715                 $body =~ s/&[^;]*$//; # remove chopped character entities
 716         }
 717         return "$body$tail";
 718 }
 719
 720 ## ----------------------------------------------------------------------
 721 ## functions returning short strings
 722
 723 # CSS class for given age value (in seconds)
 724 sub age_class {
 725         my $age = shift;
 726
 727         if ($age < 60*60*2) {
 728                 return "age0";
 729         } elsif ($age < 60*60*24*2) {
 730                 return "age1";
 731         } else {
 732                 return "age2";
 733         }
 734 }
 735
 736 # convert age in seconds to "nn units ago" string
 737 sub age_string {
 738         my $age = shift;
 739         my $age_str;
 740
 741         if ($age > 60*60*24*365*2) {
 742                 $age_str = (int $age/60/60/24/365);
 743                 $age_str .= " years ago";
 744         } elsif ($age > 60*60*24*(365/12)*2) {
 745                 $age_str = int $age/60/60/24/(365/12);
 746                 $age_str .= " months ago";
 747         } elsif ($age > 60*60*24*7*2) {
 748                 $age_str = int $age/60/60/24/7;
 749                 $age_str .= " weeks ago";
 750         } elsif ($age > 60*60*24*2) {
 751                 $age_str = int $age/60/60/24;
 752                 $age_str .= " days ago";
 753         } elsif ($age > 60*60*2) {
 754                 $age_str = int $age/60/60;
 755                 $age_str .= " hours ago";
 756         } elsif ($age > 60*2) {
 757                 $age_str = int $age/60;
 758                 $age_str .= " min ago";
 759         } elsif ($age > 2) {
 760                 $age_str = int $age;
 761                 $age_str .= " sec ago";
 762         } else {
 763                 $age_str .= " right now";
 764         }
 765         return $age_str;
 766 }
 767
 768 # convert file mode in octal to symbolic file mode string
 769 sub mode_str {
 770         my $mode = oct shift;
 771
 772         if (S_ISDIR($mode & S_IFMT)) {
 773                 return 'drwxr-xr-x';
 774         } elsif (S_ISLNK($mode)) {
 775                 return 'lrwxrwxrwx';
 776         } elsif (S_ISREG($mode)) {
 777                 # git cares only about the executable bit
 778                 if ($mode & S_IXUSR) {
 779                         return '-rwxr-xr-x';
 780                 } else {
 781                         return '-rw-r--r--';
 782                 };
 783         } else {
 784                 return '----------';
 785         }
 786 }
 787
 788 # convert file mode in octal to file type string
 789 sub file_type {
 790         my $mode = shift;
 791
 792         if ($mode !~ m/^[0-7]+$/) {
 793                 return $mode;
 794         } else {
 795                 $mode = oct $mode;
 796         }
 797
 798         if (S_ISDIR($mode & S_IFMT)) {
 799                 return "directory";
 800         } elsif (S_ISLNK($mode)) {
 801                 return "symlink";
 802         } elsif (S_ISREG($mode)) {
 803                 return "file";
 804         } else {
 805                 return "unknown";
 806         }
 807 }
 808
 809 # convert file mode in octal to file type description string
 810 sub file_type_long {
 811         my $mode = shift;
 812
 813         if ($mode !~ m/^[0-7]+$/) {
 814                 return $mode;
 815         } else {
 816                 $mode = oct $mode;
 817         }
 818
 819         if (S_ISDIR($mode & S_IFMT)) {
 820                 return "directory";
 821         } elsif (S_ISLNK($mode)) {
 822                 return "symlink";
 823         } elsif (S_ISREG($mode)) {
 824                 if ($mode & S_IXUSR) {
 825                         return "executable";
 826                 } else {
 827                         return "file";
 828                 };
 829         } else {
 830                 return "unknown";
 831         }
 832 }
 833
 834
 835 ## ----------------------------------------------------------------------
 836 ## functions returning short HTML fragments, or transforming HTML fragments
 837 ## which don't belong to other sections
 838
 839 # format line of commit message.
 840 sub format_log_line_html {
 841         my $line = shift;
 842
 843         $line = esc_html($line, -nbsp=>1);
 844         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 845                 my $hash_text = $1;
 846                 my $link =
 847                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 848                                 -class => "text"}, $hash_text);
 849                 $line =~ s/$hash_text/$link/;
 850         }
 851         return $line;
 852 }
 853
 854 # format marker of refs pointing to given object
 855 sub format_ref_marker {
 856         my ($refs, $id) = @_;
 857         my $markers = '';
 858
 859         if (defined $refs->{$id}) {
 860                 foreach my $ref (@{$refs->{$id}}) {
 861                         my ($type, $name) = qw();
 862                         # e.g. tags/v2.6.11 or heads/next
 863                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 864                                 $type = $1;
 865                                 $name = $2;
 866                         } else {
 867                                 $type = "ref";
 868                                 $name = $ref;
 869                         }
 870
 871                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 872                                     esc_html($name) . "</span>";
 873                 }
 874         }
 875
 876         if ($markers) {
 877                 return ' <span class="refs">'. $markers . '</span>';
 878         } else {
 879                 return "";
 880         }
 881 }
 882
 883 # format, perhaps shortened and with markers, title line
 884 sub format_subject_html {
 885         my ($long, $short, $href, $extra) = @_;
 886         $extra = '' unless defined($extra);
 887
 888         if (length($short) < length($long)) {
 889                 return $cgi->a({-href => $href, -class => "list subject",
 890                                 -title => to_utf8($long)},
 891                        esc_html($short) . $extra);
 892         } else {
 893                 return $cgi->a({-href => $href, -class => "list subject"},
 894                        esc_html($long)  . $extra);
 895         }
 896 }
 897
 898 # format patch (diff) line (rather not to be used for diff headers)
 899 sub format_diff_line {
 900         my $line = shift;
 901         my ($from, $to) = @_;
 902         my $char = substr($line, 0, 1);
 903         my $diff_class = "";
 904
 905         chomp $line;
 906
 907         if ($char eq '+') {
 908                 $diff_class = " add";
 909         } elsif ($char eq "-") {
 910                 $diff_class = " rem";
 911         } elsif ($char eq "@") {
 912                 $diff_class = " chunk_header";
 913         } elsif ($char eq "\\") {
 914                 $diff_class = " incomplete";
 915         }
 916         $line = untabify($line);
 917         if ($from && $to && $line =~ m/^\@{2} /) {
 918                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 919                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 920
 921                 $from_lines = 0 unless defined $from_lines;
 922                 $to_lines   = 0 unless defined $to_lines;
 923
 924                 if ($from->{'href'}) {
 925                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 926                                              -class=>"list"}, $from_text);
 927                 }
 928                 if ($to->{'href'}) {
 929                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 930                                              -class=>"list"}, $to_text);
 931                 }
 932                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 933                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 934                 return "<div class=\"diff$diff_class\">$line</div>\n";
 935         }
 936         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 937 }
 938
 939 ## ----------------------------------------------------------------------
 940 ## git utility subroutines, invoking git commands
 941
 942 # returns path to the core git executable and the --git-dir parameter as list
 943 sub git_cmd {
 944         return $GIT, '--git-dir='.$git_dir;
 945 }
 946
 947 # returns path to the core git executable and the --git-dir parameter as string
 948 sub git_cmd_str {
 949         return join(' ', git_cmd());
 950 }
 951
 952 # get HEAD ref of given project as hash
 953 sub git_get_head_hash {
 954         my $project = shift;
 955         my $o_git_dir = $git_dir;
 956         my $retval = undef;
 957         $git_dir = "$projectroot/$project";
 958         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 959                 my $head = <$fd>;
 960                 close $fd;
 961                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 962                         $retval = $1;
 963                 }
 964         }
 965         if (defined $o_git_dir) {
 966                 $git_dir = $o_git_dir;
 967         }
 968         return $retval;
 969 }
 970
 971 # get type of given object
 972 sub git_get_type {
 973         my $hash = shift;
 974
 975         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 976         my $type = <$fd>;
 977         close $fd or return;
 978         chomp $type;
 979         return $type;
 980 }
 981
 982 sub git_get_project_config {
 983         my ($key, $type) = @_;
 984
 985         return unless ($key);
 986         $key =~ s/^gitweb\.//;
 987         return if ($key =~ m/\W/);
 988
 989         my @x = (git_cmd(), 'config');
 990         if (defined $type) { push @x, $type; }
 991         push @x, "--get";
 992         push @x, "gitweb.$key";
 993         my $val = qx(@x);
 994         chomp $val;
 995         return ($val);
 996 }
 997
 998 # get hash of given path at given ref
 999 sub git_get_hash_by_path {
1000         my $base = shift;
1001         my $path = shift || return undef;
1002         my $type = shift;
1003
1004         $path =~ s,/+$,,;
1005
1006         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1007                 or die_error(undef, "Open git-ls-tree failed");
1008         my $line = <$fd>;
1009         close $fd or return undef;
1010
1011         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1012         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1013         if (defined $type && $type ne $2) {
1014                 # type doesn't match
1015                 return undef;
1016         }
1017         return $3;
1018 }
1019
1020 ## ......................................................................
1021 ## git utility functions, directly accessing git repository
1022
1023 sub git_get_project_description {
1024         my $path = shift;
1025
1026         open my $fd, "$projectroot/$path/description" or return undef;
1027         my $descr = <$fd>;
1028         close $fd;
1029         chomp $descr;
1030         return $descr;
1031 }
1032
1033 sub git_get_project_url_list {
1034         my $path = shift;
1035
1036         open my $fd, "$projectroot/$path/cloneurl" or return;
1037         my @git_project_url_list = map { chomp; $_ } <$fd>;
1038         close $fd;
1039
1040         return wantarray ? @git_project_url_list : \@git_project_url_list;
1041 }
1042
1043 sub git_get_projects_list {
1044         my ($filter) = @_;
1045         my @list;
1046
1047         $filter ||= '';
1048         $filter =~ s/\.git$//;
1049
1050         my ($check_forks) = gitweb_check_feature('forks');
1051
1052         if (-d $projects_list) {
1053                 # search in directory
1054                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1055                 # remove the trailing "/"
1056                 $dir =~ s!/+$!!;
1057                 my $pfxlen = length("$dir");
1058
1059                 File::Find::find({
1060                         follow_fast => 1, # follow symbolic links
1061                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1062                         wanted => sub {
1063                                 # skip project-list toplevel, if we get it.
1064                                 return if (m!^[/.]$!);
1065                                 # only directories can be git repositories
1066                                 return unless (-d $_);
1067
1068                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1069                                 # we check related file in $projectroot
1070                                 if ($check_forks and $subdir =~ m#/.#) {
1071                                         $File::Find::prune = 1;
1072                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1073                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1074                                         $File::Find::prune = 1;
1075                                 }
1076                         },
1077                 }, "$dir");
1078
1079         } elsif (-f $projects_list) {
1080                 # read from file(url-encoded):
1081                 # 'git%2Fgit.git Linus+Torvalds'
1082                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1083                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1084                 my %paths;
1085                 open my ($fd), $projects_list or return;
1086         PROJECT:
1087                 while (my $line = <$fd>) {
1088                         chomp $line;
1089                         my ($path, $owner) = split ' ', $line;
1090                         $path = unescape($path);
1091                         $owner = unescape($owner);
1092                         if (!defined $path) {
1093                                 next;
1094                         }
1095                         if ($filter ne '') {
1096                                 # looking for forks;
1097                                 my $pfx = substr($path, 0, length($filter));
1098                                 if ($pfx ne $filter) {
1099                                         next PROJECT;
1100                                 }
1101                                 my $sfx = substr($path, length($filter));
1102                                 if ($sfx !~ /^\/.*\.git$/) {
1103                                         next PROJECT;
1104                                 }
1105                         } elsif ($check_forks) {
1106                         PATH:
1107                                 foreach my $filter (keys %paths) {
1108                                         # looking for forks;
1109                                         my $pfx = substr($path, 0, length($filter));
1110                                         if ($pfx ne $filter) {
1111                                                 next PATH;
1112                                         }
1113                                         my $sfx = substr($path, length($filter));
1114                                         if ($sfx !~ /^\/.*\.git$/) {
1115                                                 next PATH;
1116                                         }
1117                                         # is a fork, don't include it in
1118                                         # the list
1119                                         next PROJECT;
1120                                 }
1121                         }
1122                         if (check_export_ok("$projectroot/$path")) {
1123                                 my $pr = {
1124                                         path => $path,
1125                                         owner => to_utf8($owner),
1126                                 };
1127                                 push @list, $pr;
1128                                 (my $forks_path = $path) =~ s/\.git$//;
1129                                 $paths{$forks_path}++;
1130                         }
1131                 }
1132                 close $fd;
1133         }
1134         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1135         return @list;
1136 }
1137
1138 sub git_get_project_owner {
1139         my $project = shift;
1140         my $owner;
1141
1142         return undef unless $project;
1143
1144         # read from file (url-encoded):
1145         # 'git%2Fgit.git Linus+Torvalds'
1146         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1147         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1148         if (-f $projects_list) {
1149                 open (my $fd , $projects_list);
1150                 while (my $line = <$fd>) {
1151                         chomp $line;
1152                         my ($pr, $ow) = split ' ', $line;
1153                         $pr = unescape($pr);
1154                         $ow = unescape($ow);
1155                         if ($pr eq $project) {
1156                                 $owner = to_utf8($ow);
1157                                 last;
1158                         }
1159                 }
1160                 close $fd;
1161         }
1162         if (!defined $owner) {
1163                 $owner = get_file_owner("$projectroot/$project");
1164         }
1165
1166         return $owner;
1167 }
1168
1169 sub git_get_last_activity {
1170         my ($path) = @_;
1171         my $fd;
1172
1173         $git_dir = "$projectroot/$path";
1174         open($fd, "-|", git_cmd(), 'for-each-ref',
1175              '--format=%(committer)',
1176              '--sort=-committerdate',
1177              '--count=1',
1178              'refs/heads') or return;
1179         my $most_recent = <$fd>;
1180         close $fd or return;
1181         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1182                 my $timestamp = $1;
1183                 my $age = time - $timestamp;
1184                 return ($age, age_string($age));
1185         }
1186 }
1187
1188 sub git_get_references {
1189         my $type = shift || "";
1190         my %refs;
1191         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1192         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1193         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1194                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1195                 or return;
1196
1197         while (my $line = <$fd>) {
1198                 chomp $line;
1199                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1200                         if (defined $refs{$1}) {
1201                                 push @{$refs{$1}}, $2;
1202                         } else {
1203                                 $refs{$1} = [ $2 ];
1204                         }
1205                 }
1206         }
1207         close $fd or return;
1208         return \%refs;
1209 }
1210
1211 sub git_get_rev_name_tags {
1212         my $hash = shift || return undef;
1213
1214         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1215                 or return;
1216         my $name_rev = <$fd>;
1217         close $fd;
1218
1219         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1220                 return $1;
1221         } else {
1222                 # catches also '$hash undefined' output
1223                 return undef;
1224         }
1225 }
1226
1227 ## ----------------------------------------------------------------------
1228 ## parse to hash functions
1229
1230 sub parse_date {
1231         my $epoch = shift;
1232         my $tz = shift || "-0000";
1233
1234         my %date;
1235         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1236         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1237         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1238         $date{'hour'} = $hour;
1239         $date{'minute'} = $min;
1240         $date{'mday'} = $mday;
1241         $date{'day'} = $days[$wday];
1242         $date{'month'} = $months[$mon];
1243         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1244                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1245         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1246                              $mday, $months[$mon], $hour ,$min;
1247         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1248                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1249
1250         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1251         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1252         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1253         $date{'hour_local'} = $hour;
1254         $date{'minute_local'} = $min;
1255         $date{'tz_local'} = $tz;
1256         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1257                                   1900+$year, $mon+1, $mday,
1258                                   $hour, $min, $sec, $tz);
1259         return %date;
1260 }
1261
1262 sub parse_tag {
1263         my $tag_id = shift;
1264         my %tag;
1265         my @comment;
1266
1267         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1268         $tag{'id'} = $tag_id;
1269         while (my $line = <$fd>) {
1270                 chomp $line;
1271                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1272                         $tag{'object'} = $1;
1273                 } elsif ($line =~ m/^type (.+)$/) {
1274                         $tag{'type'} = $1;
1275                 } elsif ($line =~ m/^tag (.+)$/) {
1276                         $tag{'name'} = $1;
1277                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1278                         $tag{'author'} = $1;
1279                         $tag{'epoch'} = $2;
1280                         $tag{'tz'} = $3;
1281                 } elsif ($line =~ m/--BEGIN/) {
1282                         push @comment, $line;
1283                         last;
1284                 } elsif ($line eq "") {
1285                         last;
1286                 }
1287         }
1288         push @comment, <$fd>;
1289         $tag{'comment'} = \@comment;
1290         close $fd or return;
1291         if (!defined $tag{'name'}) {
1292                 return
1293         };
1294         return %tag
1295 }
1296
1297 sub parse_commit_text {
1298         my ($commit_text, $withparents) = @_;
1299         my @commit_lines = split '\n', $commit_text;
1300         my %co;
1301
1302         pop @commit_lines; # Remove '\0'
1303
1304         my $header = shift @commit_lines;
1305         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1306                 return;
1307         }
1308         ($co{'id'}, my @parents) = split ' ', $header;
1309         while (my $line = shift @commit_lines) {
1310                 last if $line eq "\n";
1311                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1312                         $co{'tree'} = $1;
1313                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1314                         push @parents, $1;
1315                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1316                         $co{'author'} = $1;
1317                         $co{'author_epoch'} = $2;
1318                         $co{'author_tz'} = $3;
1319                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1320                                 $co{'author_name'}  = $1;
1321                                 $co{'author_email'} = $2;
1322                         } else {
1323                                 $co{'author_name'} = $co{'author'};
1324                         }
1325                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1326                         $co{'committer'} = $1;
1327                         $co{'committer_epoch'} = $2;
1328                         $co{'committer_tz'} = $3;
1329                         $co{'committer_name'} = $co{'committer'};
1330                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1331                                 $co{'committer_name'}  = $1;
1332                                 $co{'committer_email'} = $2;
1333                         } else {
1334                                 $co{'committer_name'} = $co{'committer'};
1335                         }
1336                 }
1337         }
1338         if (!defined $co{'tree'}) {
1339                 return;
1340         };
1341         $co{'parents'} = \@parents;
1342         $co{'parent'} = $parents[0];
1343
1344         foreach my $title (@commit_lines) {
1345                 $title =~ s/^    //;
1346                 if ($title ne "") {
1347                         $co{'title'} = chop_str($title, 80, 5);
1348                         # remove leading stuff of merges to make the interesting part visible
1349                         if (length($title) > 50) {
1350                                 $title =~ s/^Automatic //;
1351                                 $title =~ s/^merge (of|with) /Merge ... /i;
1352                                 if (length($title) > 50) {
1353                                         $title =~ s/(http|rsync):\/\///;
1354                                 }
1355                                 if (length($title) > 50) {
1356                                         $title =~ s/(master|www|rsync)\.//;
1357                                 }
1358                                 if (length($title) > 50) {
1359                                         $title =~ s/kernel.org:?//;
1360                                 }
1361                                 if (length($title) > 50) {
1362                                         $title =~ s/\/pub\/scm//;
1363                                 }
1364                         }
1365                         $co{'title_short'} = chop_str($title, 50, 5);
1366                         last;
1367                 }
1368         }
1369         if ($co{'title'} eq "") {
1370                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1371         }
1372         # remove added spaces
1373         foreach my $line (@commit_lines) {
1374                 $line =~ s/^    //;
1375         }
1376         $co{'comment'} = \@commit_lines;
1377
1378         my $age = time - $co{'committer_epoch'};
1379         $co{'age'} = $age;
1380         $co{'age_string'} = age_string($age);
1381         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1382         if ($age > 60*60*24*7*2) {
1383                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1384                 $co{'age_string_age'} = $co{'age_string'};
1385         } else {
1386                 $co{'age_string_date'} = $co{'age_string'};
1387                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1388         }
1389         return %co;
1390 }
1391
1392 sub parse_commit {
1393         my ($commit_id) = @_;
1394         my %co;
1395
1396         local $/ = "\0";
1397
1398         open my $fd, "-|", git_cmd(), "rev-list",
1399                 "--parents",
1400                 "--header",
1401                 "--max-count=1",
1402                 $commit_id,
1403                 "--",
1404                 or die_error(undef, "Open git-rev-list failed");
1405         %co = parse_commit_text(<$fd>, 1);
1406         close $fd;
1407
1408         return %co;
1409 }
1410
1411 sub parse_commits {
1412         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1413         my @cos;
1414
1415         $maxcount ||= 1;
1416         $skip ||= 0;
1417
1418         local $/ = "\0";
1419
1420         open my $fd, "-|", git_cmd(), "rev-list",
1421                 "--header",
1422                 ($arg ? ($arg) : ()),
1423                 ("--max-count=" . $maxcount),
1424                 ("--skip=" . $skip),
1425                 $commit_id,
1426                 "--",
1427                 ($filename ? ($filename) : ())
1428                 or die_error(undef, "Open git-rev-list failed");
1429         while (my $line = <$fd>) {
1430                 my %co = parse_commit_text($line);
1431                 push @cos, \%co;
1432         }
1433         close $fd;
1434
1435         return wantarray ? @cos : \@cos;
1436 }
1437
1438 # parse ref from ref_file, given by ref_id, with given type
1439 sub parse_ref {
1440         my $ref_file = shift;
1441         my $ref_id = shift;
1442         my $type = shift || git_get_type($ref_id);
1443         my %ref_item;
1444
1445         $ref_item{'type'} = $type;
1446         $ref_item{'id'} = $ref_id;
1447         $ref_item{'epoch'} = 0;
1448         $ref_item{'age'} = "unknown";
1449         if ($type eq "tag") {
1450                 my %tag = parse_tag($ref_id);
1451                 $ref_item{'comment'} = $tag{'comment'};
1452                 if ($tag{'type'} eq "commit") {
1453                         my %co = parse_commit($tag{'object'});
1454                         $ref_item{'epoch'} = $co{'committer_epoch'};
1455                         $ref_item{'age'} = $co{'age_string'};
1456                 } elsif (defined($tag{'epoch'})) {
1457                         my $age = time - $tag{'epoch'};
1458                         $ref_item{'epoch'} = $tag{'epoch'};
1459                         $ref_item{'age'} = age_string($age);
1460                 }
1461                 $ref_item{'reftype'} = $tag{'type'};
1462                 $ref_item{'name'} = $tag{'name'};
1463                 $ref_item{'refid'} = $tag{'object'};
1464         } elsif ($type eq "commit"){
1465                 my %co = parse_commit($ref_id);
1466                 $ref_item{'reftype'} = "commit";
1467                 $ref_item{'name'} = $ref_file;
1468                 $ref_item{'title'} = $co{'title'};
1469                 $ref_item{'refid'} = $ref_id;
1470                 $ref_item{'epoch'} = $co{'committer_epoch'};
1471                 $ref_item{'age'} = $co{'age_string'};
1472         } else {
1473                 $ref_item{'reftype'} = $type;
1474                 $ref_item{'name'} = $ref_file;
1475                 $ref_item{'refid'} = $ref_id;
1476         }
1477
1478         return %ref_item;
1479 }
1480
1481 # parse line of git-diff-tree "raw" output
1482 sub parse_difftree_raw_line {
1483         my $line = shift;
1484         my %res;
1485
1486         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1487         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1488         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1489                 $res{'from_mode'} = $1;
1490                 $res{'to_mode'} = $2;
1491                 $res{'from_id'} = $3;
1492                 $res{'to_id'} = $4;
1493                 $res{'status'} = $5;
1494                 $res{'similarity'} = $6;
1495                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1496                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1497                 } else {
1498                         $res{'file'} = unquote($7);
1499                 }
1500         }
1501         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1502         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1503                 $res{'commit'} = $1;
1504         }
1505
1506         return wantarray ? %res : \%res;
1507 }
1508
1509 # parse line of git-ls-tree output
1510 sub parse_ls_tree_line ($;%) {
1511         my $line = shift;
1512         my %opts = @_;
1513         my %res;
1514
1515         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1516         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1517
1518         $res{'mode'} = $1;
1519         $res{'type'} = $2;
1520         $res{'hash'} = $3;
1521         if ($opts{'-z'}) {
1522                 $res{'name'} = $4;
1523         } else {
1524                 $res{'name'} = unquote($4);
1525         }
1526
1527         return wantarray ? %res : \%res;
1528 }
1529
1530 ## ......................................................................
1531 ## parse to array of hashes functions
1532
1533 sub git_get_heads_list {
1534         my $limit = shift;
1535         my @headslist;
1536
1537         open my $fd, '-|', git_cmd(), 'for-each-ref',
1538                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1539                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1540                 'refs/heads'
1541                 or return;
1542         while (my $line = <$fd>) {
1543                 my %ref_item;
1544
1545                 chomp $line;
1546                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1547                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1548                 my ($committer, $epoch, $tz) =
1549                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1550                 $name =~ s!^refs/heads/!!;
1551
1552                 $ref_item{'name'}  = $name;
1553                 $ref_item{'id'}    = $hash;
1554                 $ref_item{'title'} = $title || '(no commit message)';
1555                 $ref_item{'epoch'} = $epoch;
1556                 if ($epoch) {
1557                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1558                 } else {
1559                         $ref_item{'age'} = "unknown";
1560                 }
1561
1562                 push @headslist, \%ref_item;
1563         }
1564         close $fd;
1565
1566         return wantarray ? @headslist : \@headslist;
1567 }
1568
1569 sub git_get_tags_list {
1570         my $limit = shift;
1571         my @tagslist;
1572
1573         open my $fd, '-|', git_cmd(), 'for-each-ref',
1574                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1575                 '--format=%(objectname) %(objecttype) %(refname) '.
1576                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1577                 'refs/tags'
1578                 or return;
1579         while (my $line = <$fd>) {
1580                 my %ref_item;
1581
1582                 chomp $line;
1583                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1584                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1585                 my ($creator, $epoch, $tz) =
1586                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1587                 $name =~ s!^refs/tags/!!;
1588
1589                 $ref_item{'type'} = $type;
1590                 $ref_item{'id'} = $id;
1591                 $ref_item{'name'} = $name;
1592                 if ($type eq "tag") {
1593                         $ref_item{'subject'} = $title;
1594                         $ref_item{'reftype'} = $reftype;
1595                         $ref_item{'refid'}   = $refid;
1596                 } else {
1597                         $ref_item{'reftype'} = $type;
1598                         $ref_item{'refid'}   = $id;
1599                 }
1600
1601                 if ($type eq "tag" || $type eq "commit") {
1602                         $ref_item{'epoch'} = $epoch;
1603                         if ($epoch) {
1604                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1605                         } else {
1606                                 $ref_item{'age'} = "unknown";
1607                         }
1608                 }
1609
1610                 push @tagslist, \%ref_item;
1611         }
1612         close $fd;
1613
1614         return wantarray ? @tagslist : \@tagslist;
1615 }
1616
1617 ## ----------------------------------------------------------------------
1618 ## filesystem-related functions
1619
1620 sub get_file_owner {
1621         my $path = shift;
1622
1623         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1624         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1625         if (!defined $gcos) {
1626                 return undef;
1627         }
1628         my $owner = $gcos;
1629         $owner =~ s/[,;].*$//;
1630         return to_utf8($owner);
1631 }
1632
1633 ## ......................................................................
1634 ## mimetype related functions
1635
1636 sub mimetype_guess_file {
1637         my $filename = shift;
1638         my $mimemap = shift;
1639         -r $mimemap or return undef;
1640
1641         my %mimemap;
1642         open(MIME, $mimemap) or return undef;
1643         while (<MIME>) {
1644                 next if m/^#/; # skip comments
1645                 my ($mime, $exts) = split(/\t+/);
1646                 if (defined $exts) {
1647                         my @exts = split(/\s+/, $exts);
1648                         foreach my $ext (@exts) {
1649                                 $mimemap{$ext} = $mime;
1650                         }
1651                 }
1652         }
1653         close(MIME);
1654
1655         $filename =~ /\.([^.]*)$/;
1656         return $mimemap{$1};
1657 }
1658
1659 sub mimetype_guess {
1660         my $filename = shift;
1661         my $mime;
1662         $filename =~ /\./ or return undef;
1663
1664         if ($mimetypes_file) {
1665                 my $file = $mimetypes_file;
1666                 if ($file !~ m!^/!) { # if it is relative path
1667                         # it is relative to project
1668                         $file = "$projectroot/$project/$file";
1669                 }
1670                 $mime = mimetype_guess_file($filename, $file);
1671         }
1672         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1673         return $mime;
1674 }
1675
1676 sub blob_mimetype {
1677         my $fd = shift;
1678         my $filename = shift;
1679
1680         if ($filename) {
1681                 my $mime = mimetype_guess($filename);
1682                 $mime and return $mime;
1683         }
1684
1685         # just in case
1686         return $default_blob_plain_mimetype unless $fd;
1687
1688         if (-T $fd) {
1689                 return 'text/plain' .
1690                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1691         } elsif (! $filename) {
1692                 return 'application/octet-stream';
1693         } elsif ($filename =~ m/\.png$/i) {
1694                 return 'image/png';
1695         } elsif ($filename =~ m/\.gif$/i) {
1696                 return 'image/gif';
1697         } elsif ($filename =~ m/\.jpe?g$/i) {
1698                 return 'image/jpeg';
1699         } else {
1700                 return 'application/octet-stream';
1701         }
1702 }
1703
1704 ## ======================================================================
1705 ## functions printing HTML: header, footer, error page
1706
1707 sub git_header_html {
1708         my $status = shift || "200 OK";
1709         my $expires = shift;
1710
1711         my $title = "$site_name";
1712         if (defined $project) {
1713                 $title .= " - " . to_utf8($project);
1714                 if (defined $action) {
1715                         $title .= "/$action";
1716                         if (defined $file_name) {
1717                                 $title .= " - " . esc_path($file_name);
1718                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1719                                         $title .= "/";
1720                                 }
1721                         }
1722                 }
1723         }
1724         my $content_type;
1725         # require explicit support from the UA if we are to send the page as
1726         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1727         # we have to do this because MSIE sometimes globs '*/*', pretending to
1728         # support xhtml+xml but choking when it gets what it asked for.
1729         if (defined $cgi->http('HTTP_ACCEPT') &&
1730             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1731             $cgi->Accept('application/xhtml+xml') != 0) {
1732                 $content_type = 'application/xhtml+xml';
1733         } else {
1734                 $content_type = 'text/html';
1735         }
1736         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1737                            -status=> $status, -expires => $expires);
1738         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1739         print <<EOF;
1740 <?xml version="1.0" encoding="utf-8"?>
1741 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1742 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1743 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1744 <!-- git core binaries version $git_version -->
1745 <head>
1746 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1747 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1748 <meta name="robots" content="index, nofollow"/>
1749 <title>$title</title>
1750 EOF
1751 # print out each stylesheet that exist
1752         if (defined $stylesheet) {
1753 #provides backwards capability for those people who define style sheet in a config file
1754                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1755         } else {
1756                 foreach my $stylesheet (@stylesheets) {
1757                         next unless $stylesheet;
1758                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1759                 }
1760         }
1761         if (defined $project) {
1762                 printf('<link rel="alternate" title="%s log RSS feed" '.
1763                        'href="%s" type="application/rss+xml" />'."\n",
1764                        esc_param($project), href(action=>"rss"));
1765                 printf('<link rel="alternate" title="%s log Atom feed" '.
1766                        'href="%s" type="application/atom+xml" />'."\n",
1767                        esc_param($project), href(action=>"atom"));
1768         } else {
1769                 printf('<link rel="alternate" title="%s projects list" '.
1770                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1771                        $site_name, href(project=>undef, action=>"project_index"));
1772                 printf('<link rel="alternate" title="%s projects feeds" '.
1773                        'href="%s" type="text/x-opml"/>'."\n",
1774                        $site_name, href(project=>undef, action=>"opml"));
1775         }
1776         if (defined $favicon) {
1777                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1778         }
1779
1780         print "</head>\n" .
1781               "<body>\n";
1782
1783         if (-f $site_header) {
1784                 open (my $fd, $site_header);
1785                 print <$fd>;
1786                 close $fd;
1787         }
1788
1789         print "<div class=\"page_header\">\n" .
1790               $cgi->a({-href => esc_url($logo_url),
1791                        -title => $logo_label},
1792                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1793         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1794         if (defined $project) {
1795                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1796                 if (defined $action) {
1797                         print " / $action";
1798                 }
1799                 print "\n";
1800         }
1801         my ($have_search) = gitweb_check_feature('search');
1802         if ((defined $project) && ($have_search)) {
1803                 if (!defined $searchtext) {
1804                         $searchtext = "";
1805                 }
1806                 my $search_hash;
1807                 if (defined $hash_base) {
1808                         $search_hash = $hash_base;
1809                 } elsif (defined $hash) {
1810                         $search_hash = $hash;
1811                 } else {
1812                         $search_hash = "HEAD";
1813                 }
1814                 $cgi->param("a", "search");
1815                 $cgi->param("h", $search_hash);
1816                 $cgi->param("p", $project);
1817                 print $cgi->startform(-method => "get", -action => $my_uri) .
1818                       "<div class=\"search\">\n" .
1819                       $cgi->hidden(-name => "p") . "\n" .
1820                       $cgi->hidden(-name => "a") . "\n" .
1821                       $cgi->hidden(-name => "h") . "\n" .
1822                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1823                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1824                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1825                       " search:\n",
1826                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1827                       "</div>" .
1828                       $cgi->end_form() . "\n";
1829         }
1830         print "</div>\n";
1831 }
1832
1833 sub git_footer_html {
1834         print "<div class=\"page_footer\">\n";
1835         if (defined $project) {
1836                 my $descr = git_get_project_description($project);
1837                 if (defined $descr) {
1838                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1839                 }
1840                 print $cgi->a({-href => href(action=>"rss"),
1841                               -class => "rss_logo"}, "RSS") . " ";
1842                 print $cgi->a({-href => href(action=>"atom"),
1843                               -class => "rss_logo"}, "Atom") . "\n";
1844         } else {
1845                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1846                               -class => "rss_logo"}, "OPML") . " ";
1847                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1848                               -class => "rss_logo"}, "TXT") . "\n";
1849         }
1850         print "</div>\n" ;
1851
1852         if (-f $site_footer) {
1853                 open (my $fd, $site_footer);
1854                 print <$fd>;
1855                 close $fd;
1856         }
1857
1858         print "</body>\n" .
1859               "</html>";
1860 }
1861
1862 sub die_error {
1863         my $status = shift || "403 Forbidden";
1864         my $error = shift || "Malformed query, file missing or permission denied";
1865
1866         git_header_html($status);
1867         print <<EOF;
1868 <div class="page_body">
1869 <br /><br />
1870 $status - $error
1871 <br />
1872 </div>
1873 EOF
1874         git_footer_html();
1875         exit;
1876 }
1877
1878 ## ----------------------------------------------------------------------
1879 ## functions printing or outputting HTML: navigation
1880
1881 sub git_print_page_nav {
1882         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1883         $extra = '' if !defined $extra; # pager or formats
1884
1885         my @navs = qw(summary shortlog log commit commitdiff tree);
1886         if ($suppress) {
1887                 @navs = grep { $_ ne $suppress } @navs;
1888         }
1889
1890         my %arg = map { $_ => {action=>$_} } @navs;
1891         if (defined $head) {
1892                 for (qw(commit commitdiff)) {
1893                         $arg{$_}{'hash'} = $head;
1894                 }
1895                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1896                         for (qw(shortlog log)) {
1897                                 $arg{$_}{'hash'} = $head;
1898                         }
1899                 }
1900         }
1901         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1902         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1903
1904         print "<div class=\"page_nav\">\n" .
1905                 (join " | ",
1906                  map { $_ eq $current ?
1907                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1908                  } @navs);
1909         print "<br/>\n$extra<br/>\n" .
1910               "</div>\n";
1911 }
1912
1913 sub format_paging_nav {
1914         my ($action, $hash, $head, $page, $nrevs) = @_;
1915         my $paging_nav;
1916
1917
1918         if ($hash ne $head || $page) {
1919                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1920         } else {
1921                 $paging_nav .= "HEAD";
1922         }
1923
1924         if ($page > 0) {
1925                 $paging_nav .= " &sdot; " .
1926                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1927                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1928         } else {
1929                 $paging_nav .= " &sdot; prev";
1930         }
1931
1932         if ($nrevs >= (100 * ($page+1)-1)) {
1933                 $paging_nav .= " &sdot; " .
1934                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1935                                  -accesskey => "n", -title => "Alt-n"}, "next");
1936         } else {
1937                 $paging_nav .= " &sdot; next";
1938         }
1939
1940         return $paging_nav;
1941 }
1942
1943 ## ......................................................................
1944 ## functions printing or outputting HTML: div
1945
1946 sub git_print_header_div {
1947         my ($action, $title, $hash, $hash_base) = @_;
1948         my %args = ();
1949
1950         $args{'action'} = $action;
1951         $args{'hash'} = $hash if $hash;
1952         $args{'hash_base'} = $hash_base if $hash_base;
1953
1954         print "<div class=\"header\">\n" .
1955               $cgi->a({-href => href(%args), -class => "title"},
1956               $title ? $title : $action) .
1957               "\n</div>\n";
1958 }
1959
1960 #sub git_print_authorship (\%) {
1961 sub git_print_authorship {
1962         my $co = shift;
1963
1964         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1965         print "<div class=\"author_date\">" .
1966               esc_html($co->{'author_name'}) .
1967               " [$ad{'rfc2822'}";
1968         if ($ad{'hour_local'} < 6) {
1969                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1970                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1971         } else {
1972                 printf(" (%02d:%02d %s)",
1973                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1974         }
1975         print "]</div>\n";
1976 }
1977
1978 sub git_print_page_path {
1979         my $name = shift;
1980         my $type = shift;
1981         my $hb = shift;
1982
1983
1984         print "<div class=\"page_path\">";
1985         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1986                       -title => 'tree root'}, to_utf8("[$project]"));
1987         print " / ";
1988         if (defined $name) {
1989                 my @dirname = split '/', $name;
1990                 my $basename = pop @dirname;
1991                 my $fullname = '';
1992
1993                 foreach my $dir (@dirname) {
1994                         $fullname .= ($fullname ? '/' : '') . $dir;
1995                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1996                                                      hash_base=>$hb),
1997                                       -title => $fullname}, esc_path($dir));
1998                         print " / ";
1999                 }
2000                 if (defined $type && $type eq 'blob') {
2001                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2002                                                      hash_base=>$hb),
2003                                       -title => $name}, esc_path($basename));
2004                 } elsif (defined $type && $type eq 'tree') {
2005                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2006                                                      hash_base=>$hb),
2007                                       -title => $name}, esc_path($basename));
2008                         print " / ";
2009                 } else {
2010                         print esc_path($basename);
2011                 }
2012         }
2013         print "<br/></div>\n";
2014 }
2015
2016 # sub git_print_log (\@;%) {
2017 sub git_print_log ($;%) {
2018         my $log = shift;
2019         my %opts = @_;
2020
2021         if ($opts{'-remove_title'}) {
2022                 # remove title, i.e. first line of log
2023                 shift @$log;
2024         }
2025         # remove leading empty lines
2026         while (defined $log->[0] && $log->[0] eq "") {
2027                 shift @$log;
2028         }
2029
2030         # print log
2031         my $signoff = 0;
2032         my $empty = 0;
2033         foreach my $line (@$log) {
2034                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2035                         $signoff = 1;
2036                         $empty = 0;
2037                         if (! $opts{'-remove_signoff'}) {
2038                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2039                                 next;
2040                         } else {
2041                                 # remove signoff lines
2042                                 next;
2043                         }
2044                 } else {
2045                         $signoff = 0;
2046                 }
2047
2048                 # print only one empty line
2049                 # do not print empty line after signoff
2050                 if ($line eq "") {
2051                         next if ($empty || $signoff);
2052                         $empty = 1;
2053                 } else {
2054                         $empty = 0;
2055                 }
2056
2057                 print format_log_line_html($line) . "<br/>\n";
2058         }
2059
2060         if ($opts{'-final_empty_line'}) {
2061                 # end with single empty line
2062                 print "<br/>\n" unless $empty;
2063         }
2064 }
2065
2066 # return link target (what link points to)
2067 sub git_get_link_target {
2068         my $hash = shift;
2069         my $link_target;
2070
2071         # read link
2072         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2073                 or return;
2074         {
2075                 local $/;
2076                 $link_target = <$fd>;
2077         }
2078         close $fd
2079                 or return;
2080
2081         return $link_target;
2082 }
2083
2084 # given link target, and the directory (basedir) the link is in,
2085 # return target of link relative to top directory (top tree);
2086 # return undef if it is not possible (including absolute links).
2087 sub normalize_link_target {
2088         my ($link_target, $basedir, $hash_base) = @_;
2089
2090         # we can normalize symlink target only if $hash_base is provided
2091         return unless $hash_base;
2092
2093         # absolute symlinks (beginning with '/') cannot be normalized
2094         return if (substr($link_target, 0, 1) eq '/');
2095
2096         # normalize link target to path from top (root) tree (dir)
2097         my $path;
2098         if ($basedir) {
2099                 $path = $basedir . '/' . $link_target;
2100         } else {
2101                 # we are in top (root) tree (dir)
2102                 $path = $link_target;
2103         }
2104
2105         # remove //, /./, and /../
2106         my @path_parts;
2107         foreach my $part (split('/', $path)) {
2108                 # discard '.' and ''
2109                 next if (!$part || $part eq '.');
2110                 # handle '..'
2111                 if ($part eq '..') {
2112                         if (@path_parts) {
2113                                 pop @path_parts;
2114                         } else {
2115                                 # link leads outside repository (outside top dir)
2116                                 return;
2117                         }
2118                 } else {
2119                         push @path_parts, $part;
2120                 }
2121         }
2122         $path = join('/', @path_parts);
2123
2124         return $path;
2125 }
2126
2127 # print tree entry (row of git_tree), but without encompassing <tr> element
2128 sub git_print_tree_entry {
2129         my ($t, $basedir, $hash_base, $have_blame) = @_;
2130
2131         my %base_key = ();
2132         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2133
2134         # The format of a table row is: mode list link.  Where mode is
2135         # the mode of the entry, list is the name of the entry, an href,
2136         # and link is the action links of the entry.
2137
2138         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2139         if ($t->{'type'} eq "blob") {
2140                 print "<td class=\"list\">" .
2141                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2142                                                file_name=>"$basedir$t->{'name'}", %base_key),
2143                                 -class => "list"}, esc_path($t->{'name'}));
2144                 if (S_ISLNK(oct $t->{'mode'})) {
2145                         my $link_target = git_get_link_target($t->{'hash'});
2146                         if ($link_target) {
2147                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2148                                 if (defined $norm_target) {
2149                                         print " -> " .
2150                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2151                                                                      file_name=>$norm_target),
2152                                                        -title => $norm_target}, esc_path($link_target));
2153                                 } else {
2154                                         print " -> " . esc_path($link_target);
2155                                 }
2156                         }
2157                 }
2158                 print "</td>\n";
2159                 print "<td class=\"link\">";
2160                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2161                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2162                               "blob");
2163                 if ($have_blame) {
2164                         print " | " .
2165                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2166                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2167                                       "blame");
2168                 }
2169                 if (defined $hash_base) {
2170                         print " | " .
2171                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2172                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2173                                       "history");
2174                 }
2175                 print " | " .
2176                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2177                                                file_name=>"$basedir$t->{'name'}")},
2178                                 "raw");
2179                 print "</td>\n";
2180
2181         } elsif ($t->{'type'} eq "tree") {
2182                 print "<td class=\"list\">";
2183                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2184                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2185                               esc_path($t->{'name'}));
2186                 print "</td>\n";
2187                 print "<td class=\"link\">";
2188                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2189                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2190                               "tree");
2191                 if (defined $hash_base) {
2192                         print " | " .
2193                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2194                                                      file_name=>"$basedir$t->{'name'}")},
2195                                       "history");
2196                 }
2197                 print "</td>\n";
2198         }
2199 }
2200
2201 ## ......................................................................
2202 ## functions printing large fragments of HTML
2203
2204 sub git_difftree_body {
2205         my ($difftree, $hash, $parent) = @_;
2206         my ($have_blame) = gitweb_check_feature('blame');
2207         print "<div class=\"list_head\">\n";
2208         if ($#{$difftree} > 10) {
2209                 print(($#{$difftree} + 1) . " files changed:\n");
2210         }
2211         print "</div>\n";
2212
2213         print "<table class=\"diff_tree\">\n";
2214         my $alternate = 1;
2215         my $patchno = 0;
2216         foreach my $line (@{$difftree}) {
2217                 my %diff = parse_difftree_raw_line($line);
2218
2219                 if ($alternate) {
2220                         print "<tr class=\"dark\">\n";
2221                 } else {
2222                         print "<tr class=\"light\">\n";
2223                 }
2224                 $alternate ^= 1;
2225
2226                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2227                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2228                 if ($diff{'to_mode'} ne ('0' x 6)) {
2229                         $to_mode_oct = oct $diff{'to_mode'};
2230                         if (S_ISREG($to_mode_oct)) { # only for regular file
2231                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2232                         }
2233                         $to_file_type = file_type($diff{'to_mode'});
2234                 }
2235                 if ($diff{'from_mode'} ne ('0' x 6)) {
2236                         $from_mode_oct = oct $diff{'from_mode'};
2237                         if (S_ISREG($to_mode_oct)) { # only for regular file
2238                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2239                         }
2240                         $from_file_type = file_type($diff{'from_mode'});
2241                 }
2242
2243                 if ($diff{'status'} eq "A") { # created
2244                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2245                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2246                         $mode_chng   .= "]</span>";
2247                         print "<td>";
2248                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2249                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2250                                       -class => "list"}, esc_path($diff{'file'}));
2251                         print "</td>\n";
2252                         print "<td>$mode_chng</td>\n";
2253                         print "<td class=\"link\">";
2254                         if ($action eq 'commitdiff') {
2255                                 # link to patch
2256                                 $patchno++;
2257                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2258                                 print " | ";
2259                         }
2260                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2261                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2262                                       "blob");
2263                         print "</td>\n";
2264
2265                 } elsif ($diff{'status'} eq "D") { # deleted
2266                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2267                         print "<td>";
2268                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2269                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2270                                        -class => "list"}, esc_path($diff{'file'}));
2271                         print "</td>\n";
2272                         print "<td>$mode_chng</td>\n";
2273                         print "<td class=\"link\">";
2274                         if ($action eq 'commitdiff') {
2275                                 # link to patch
2276                                 $patchno++;
2277                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2278                                 print " | ";
2279                         }
2280                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2281                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2282                                       "blob") . " | ";
2283                         if ($have_blame) {
2284                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2285                                                              file_name=>$diff{'file'})},
2286                                               "blame") . " | ";
2287                         }
2288                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2289                                                      file_name=>$diff{'file'})},
2290                                       "history");
2291                         print "</td>\n";
2292
2293                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2294                         my $mode_chnge = "";
2295                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2296                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2297                                 if ($from_file_type ne $to_file_type) {
2298                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2299                                 }
2300                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2301                                         if ($from_mode_str && $to_mode_str) {
2302                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2303                                         } elsif ($to_mode_str) {
2304                                                 $mode_chnge .= " mode: $to_mode_str";
2305                                         }
2306                                 }
2307                                 $mode_chnge .= "]</span>\n";
2308                         }
2309                         print "<td>";
2310                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2311                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2312                                       -class => "list"}, esc_path($diff{'file'}));
2313                         print "</td>\n";
2314                         print "<td>$mode_chnge</td>\n";
2315                         print "<td class=\"link\">";
2316                         if ($action eq 'commitdiff') {
2317                                 # link to patch
2318                                 $patchno++;
2319                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2320                                       " | ";
2321                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2322                                 # "commit" view and modified file (not onlu mode changed)
2323                                 print $cgi->a({-href => href(action=>"blobdiff",
2324                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2325                                                              hash_base=>$hash, hash_parent_base=>$parent,
2326                                                              file_name=>$diff{'file'})},
2327                                               "diff") .
2328                                       " | ";
2329                         }
2330                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2331                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2332                                        "blob") . " | ";
2333                         if ($have_blame) {
2334                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2335                                                              file_name=>$diff{'file'})},
2336                                               "blame") . " | ";
2337                         }
2338                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2339                                                      file_name=>$diff{'file'})},
2340                                       "history");
2341                         print "</td>\n";
2342
2343                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2344                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2345                         my $nstatus = $status_name{$diff{'status'}};
2346                         my $mode_chng = "";
2347                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2348                                 # mode also for directories, so we cannot use $to_mode_str
2349                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2350                         }
2351                         print "<td>" .
2352                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2353                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2354                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2355                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2356                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2357                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2358                                       -class => "list"}, esc_path($diff{'from_file'})) .
2359                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2360                               "<td class=\"link\">";
2361                         if ($action eq 'commitdiff') {
2362                                 # link to patch
2363                                 $patchno++;
2364                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2365                                       " | ";
2366                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2367                                 # "commit" view and modified file (not only pure rename or copy)
2368                                 print $cgi->a({-href => href(action=>"blobdiff",
2369                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2370                                                              hash_base=>$hash, hash_parent_base=>$parent,
2371                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2372                                               "diff") .
2373                                       " | ";
2374                         }
2375                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2376                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2377                                       "blob") . " | ";
2378                         if ($have_blame) {
2379                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2380                                                              file_name=>$diff{'to_file'})},
2381                                               "blame") . " | ";
2382                         }
2383                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2384                                                     file_name=>$diff{'to_file'})},
2385                                       "history");
2386                         print "</td>\n";
2387
2388                 } # we should not encounter Unmerged (U) or Unknown (X) status
2389                 print "</tr>\n";
2390         }
2391         print "</table>\n";
2392 }
2393
2394 sub git_patchset_body {
2395         my ($fd, $difftree, $hash, $hash_parent) = @_;
2396
2397         my $patch_idx = 0;
2398         my $patch_line;
2399         my $diffinfo;
2400         my (%from, %to);
2401
2402         print "<div class=\"patchset\">\n";
2403
2404         # skip to first patch
2405         while ($patch_line = <$fd>) {
2406                 chomp $patch_line;
2407
2408                 last if ($patch_line =~ m/^diff /);
2409         }
2410
2411  PATCH:
2412         while ($patch_line) {
2413                 my @diff_header;
2414                 my ($from_id, $to_id);
2415
2416                 # git diff header
2417                 #assert($patch_line =~ m/^diff /) if DEBUG;
2418                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2419                 push @diff_header, $patch_line;
2420
2421                 # extended diff header
2422         EXTENDED_HEADER:
2423                 while ($patch_line = <$fd>) {
2424                         chomp $patch_line;
2425
2426                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2427
2428                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2429                                 $from_id = $1;
2430                                 $to_id   = $2;
2431                         }
2432
2433                         push @diff_header, $patch_line;
2434                 }
2435                 my $last_patch_line = $patch_line;
2436
2437                 # check if current patch belong to current raw line
2438                 # and parse raw git-diff line if needed
2439                 if (defined $diffinfo &&
2440                     $diffinfo->{'from_id'} eq $from_id &&
2441                     $diffinfo->{'to_id'}   eq $to_id) {
2442                         # this is split patch
2443                         print "<div class=\"patch cont\">\n";
2444                 } else {
2445                         # advance raw git-diff output if needed
2446                         $patch_idx++ if defined $diffinfo;
2447
2448                         # read and prepare patch information
2449                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2450                                 # pre-parsed (or generated by hand)
2451                                 $diffinfo = $difftree->[$patch_idx];
2452                         } else {
2453                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2454                         }
2455                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2456                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2457                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2458                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2459                                                      hash=>$diffinfo->{'from_id'},
2460                                                      file_name=>$from{'file'});
2461                         } else {
2462                                 delete $from{'href'};
2463                         }
2464                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2465                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2466                                                    hash=>$diffinfo->{'to_id'},
2467                                                    file_name=>$to{'file'});
2468                         } else {
2469                                 delete $to{'href'};
2470                         }
2471                         # this is first patch for raw difftree line with $patch_idx index
2472                         # we index @$difftree array from 0, but number patches from 1
2473                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2474                 }
2475
2476                 # print "git diff" header
2477                 $patch_line = shift @diff_header;
2478                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2479                 if ($from{'href'}) {
2480                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2481                                                'a/' . esc_path($from{'file'}));
2482                 } else { # file was added
2483                         $patch_line .= 'a/' . esc_path($from{'file'});
2484                 }
2485                 $patch_line .= ' ';
2486                 if ($to{'href'}) {
2487                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2488                                                'b/' . esc_path($to{'file'}));
2489                 } else { # file was deleted
2490                         $patch_line .= 'b/' . esc_path($to{'file'});
2491                 }
2492                 print "<div class=\"diff header\">$patch_line</div>\n";
2493
2494                 # print extended diff header
2495                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2496         EXTENDED_HEADER:
2497                 foreach $patch_line (@diff_header) {
2498                         # match <path>
2499                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2500                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2501                                                        esc_path($from{'file'}));
2502                         }
2503                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2504                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2505                                                        esc_path($to{'file'}));
2506                         }
2507                         # match <mode>
2508                         if ($patch_line =~ m/\s(\d{6})$/) {
2509                                 $patch_line .= '<span class="info"> (' .
2510                                                file_type_long($1) .
2511                                                ')</span>';
2512                         }
2513                         # match <hash>
2514                         if ($patch_line =~ m/^index/) {
2515                                 my ($from_link, $to_link);
2516                                 if ($from{'href'}) {
2517                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2518                                                              substr($diffinfo->{'from_id'},0,7));
2519                                 } else {
2520                                         $from_link = '0' x 7;
2521                                 }
2522                                 if ($to{'href'}) {
2523                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2524                                                            substr($diffinfo->{'to_id'},0,7));
2525                                 } else {
2526                                         $to_link = '0' x 7;
2527                                 }
2528                                 #affirm {
2529                                 #       my ($from_hash, $to_hash) =
2530                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2531                                 #       my ($from_id, $to_id) =
2532                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2533                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2534                                 #} if DEBUG;
2535                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2536                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2537                         }
2538                         print $patch_line . "<br/>\n";
2539                 }
2540                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2541
2542                 # from-file/to-file diff header
2543                 $patch_line = $last_patch_line;
2544                 if (! $patch_line) {
2545                         print "</div>\n"; # class="patch"
2546                         last PATCH;
2547                 }
2548                 next PATCH if ($patch_line =~ m/^diff /);
2549                 #assert($patch_line =~ m/^---/) if DEBUG;
2550                 if ($from{'href'} && $patch_line =~ m!^--- "?a/!) {
2551                         $patch_line = '--- a/' .
2552                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2553                                               esc_path($from{'file'}));
2554                 }
2555                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2556
2557                 $patch_line = <$fd>;
2558                 chomp $patch_line;
2559
2560                 #assert($patch_line =~ m/^+++/) if DEBUG;
2561                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2562                         $patch_line = '+++ b/' .
2563                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2564                                               esc_path($to{'file'}));
2565                 }
2566                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2567
2568                 # the patch itself
2569         LINE:
2570                 while ($patch_line = <$fd>) {
2571                         chomp $patch_line;
2572
2573                         next PATCH if ($patch_line =~ m/^diff /);
2574
2575                         print format_diff_line($patch_line, \%from, \%to);
2576                 }
2577
2578         } continue {
2579                 print "</div>\n"; # class="patch"
2580         }
2581
2582         print "</div>\n"; # class="patchset"
2583 }
2584
2585 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2586
2587 sub git_project_list_body {
2588         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2589
2590         my ($check_forks) = gitweb_check_feature('forks');
2591
2592         my @projects;
2593         foreach my $pr (@$projlist) {
2594                 my (@aa) = git_get_last_activity($pr->{'path'});
2595                 unless (@aa) {
2596                         next;
2597                 }
2598                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2599                 if (!defined $pr->{'descr'}) {
2600                         my $descr = git_get_project_description($pr->{'path'}) || "";
2601                         $pr->{'descr_long'} = to_utf8($descr);
2602                         $pr->{'descr'} = chop_str($descr, 25, 5);
2603                 }
2604                 if (!defined $pr->{'owner'}) {
2605                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2606                 }
2607                 if ($check_forks) {
2608                         my $pname = $pr->{'path'};
2609                         if (($pname =~ s/\.git$//) &&
2610                             ($pname !~ /\/$/) &&
2611                             (-d "$projectroot/$pname")) {
2612                                 $pr->{'forks'} = "-d $projectroot/$pname";
2613                         }
2614                         else {
2615                                 $pr->{'forks'} = 0;
2616                         }
2617                 }
2618                 push @projects, $pr;
2619         }
2620
2621         $order ||= "project";
2622         $from = 0 unless defined $from;
2623         $to = $#projects if (!defined $to || $#projects < $to);
2624
2625         print "<table class=\"project_list\">\n";
2626         unless ($no_header) {
2627                 print "<tr>\n";
2628                 if ($check_forks) {
2629                         print "<th></th>\n";
2630                 }
2631                 if ($order eq "project") {
2632                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2633                         print "<th>Project</th>\n";
2634                 } else {
2635                         print "<th>" .
2636                               $cgi->a({-href => href(project=>undef, order=>'project'),
2637                                        -class => "header"}, "Project") .
2638                               "</th>\n";
2639                 }
2640                 if ($order eq "descr") {
2641                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2642                         print "<th>Description</th>\n";
2643                 } else {
2644                         print "<th>" .
2645                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2646                                        -class => "header"}, "Description") .
2647                               "</th>\n";
2648                 }
2649                 if ($order eq "owner") {
2650                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2651                         print "<th>Owner</th>\n";
2652                 } else {
2653                         print "<th>" .
2654                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2655                                        -class => "header"}, "Owner") .
2656                               "</th>\n";
2657                 }
2658                 if ($order eq "age") {
2659                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2660                         print "<th>Last Change</th>\n";
2661                 } else {
2662                         print "<th>" .
2663                               $cgi->a({-href => href(project=>undef, order=>'age'),
2664                                        -class => "header"}, "Last Change") .
2665                               "</th>\n";
2666                 }
2667                 print "<th></th>\n" .
2668                       "</tr>\n";
2669         }
2670         my $alternate = 1;
2671         for (my $i = $from; $i <= $to; $i++) {
2672                 my $pr = $projects[$i];
2673                 if ($alternate) {
2674                         print "<tr class=\"dark\">\n";
2675                 } else {
2676                         print "<tr class=\"light\">\n";
2677                 }
2678                 $alternate ^= 1;
2679                 if ($check_forks) {
2680                         print "<td>";
2681                         if ($pr->{'forks'}) {
2682                                 print "<!-- $pr->{'forks'} -->\n";
2683                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2684                         }
2685                         print "</td>\n";
2686                 }
2687                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2688                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2689                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2690                                         -class => "list", -title => $pr->{'descr_long'}},
2691                                         esc_html($pr->{'descr'})) . "</td>\n" .
2692                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2693                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2694                       $pr->{'age_string'} . "</td>\n" .
2695                       "<td class=\"link\">" .
2696                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2697                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2698                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2699                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2700                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2701                       "</td>\n" .
2702                       "</tr>\n";
2703         }
2704         if (defined $extra) {
2705                 print "<tr>\n";
2706                 if ($check_forks) {
2707                         print "<td></td>\n";
2708                 }
2709                 print "<td colspan=\"5\">$extra</td>\n" .
2710                       "</tr>\n";
2711         }
2712         print "</table>\n";
2713 }
2714
2715 sub git_shortlog_body {
2716         # uses global variable $project
2717         my ($commitlist, $from, $to, $refs, $extra) = @_;
2718
2719         my $have_snapshot = gitweb_have_snapshot();
2720
2721         $from = 0 unless defined $from;
2722         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2723
2724         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2725         my $alternate = 1;
2726         for (my $i = $from; $i <= $to; $i++) {
2727                 my %co = %{$commitlist->[$i]};
2728                 my $commit = $co{'id'};
2729                 my $ref = format_ref_marker($refs, $commit);
2730                 if ($alternate) {
2731                         print "<tr class=\"dark\">\n";
2732                 } else {
2733                         print "<tr class=\"light\">\n";
2734                 }
2735                 $alternate ^= 1;
2736                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2737                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2738                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2739                       "<td>";
2740                 print format_subject_html($co{'title'}, $co{'title_short'},
2741                                           href(action=>"commit", hash=>$commit), $ref);
2742                 print "</td>\n" .
2743                       "<td class=\"link\">" .
2744                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2745                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2746                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2747                 if ($have_snapshot) {
2748                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2749                 }
2750                 print "</td>\n" .
2751                       "</tr>\n";
2752         }
2753         if (defined $extra) {
2754                 print "<tr>\n" .
2755                       "<td colspan=\"4\">$extra</td>\n" .
2756                       "</tr>\n";
2757         }
2758         print "</table>\n";
2759 }
2760
2761 sub git_history_body {
2762         # Warning: assumes constant type (blob or tree) during history
2763         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2764
2765         $from = 0 unless defined $from;
2766         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2767
2768         print "<table class=\"history\" cellspacing=\"0\">\n";
2769         my $alternate = 1;
2770         for (my $i = $from; $i <= $to; $i++) {
2771                 my %co = %{$commitlist->[$i]};
2772                 if (!%co) {
2773                         next;
2774                 }
2775                 my $commit = $co{'id'};
2776
2777                 my $ref = format_ref_marker($refs, $commit);
2778
2779                 if ($alternate) {
2780                         print "<tr class=\"dark\">\n";
2781                 } else {
2782                         print "<tr class=\"light\">\n";
2783                 }
2784                 $alternate ^= 1;
2785                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2786                       # shortlog uses      chop_str($co{'author_name'}, 10)
2787                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2788                       "<td>";
2789                 # originally git_history used chop_str($co{'title'}, 50)
2790                 print format_subject_html($co{'title'}, $co{'title_short'},
2791                                           href(action=>"commit", hash=>$commit), $ref);
2792                 print "</td>\n" .
2793                       "<td class=\"link\">" .
2794                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2795                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2796
2797                 if ($ftype eq 'blob') {
2798                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2799                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2800                         if (defined $blob_current && defined $blob_parent &&
2801                                         $blob_current ne $blob_parent) {
2802                                 print " | " .
2803                                         $cgi->a({-href => href(action=>"blobdiff",
2804                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2805                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2806                                                                file_name=>$file_name)},
2807                                                 "diff to current");
2808                         }
2809                 }
2810                 print "</td>\n" .
2811                       "</tr>\n";
2812         }
2813         if (defined $extra) {
2814                 print "<tr>\n" .
2815                       "<td colspan=\"4\">$extra</td>\n" .
2816                       "</tr>\n";
2817         }
2818         print "</table>\n";
2819 }
2820
2821 sub git_tags_body {
2822         # uses global variable $project
2823         my ($taglist, $from, $to, $extra) = @_;
2824         $from = 0 unless defined $from;
2825         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2826
2827         print "<table class=\"tags\" cellspacing=\"0\">\n";
2828         my $alternate = 1;
2829         for (my $i = $from; $i <= $to; $i++) {
2830                 my $entry = $taglist->[$i];
2831                 my %tag = %$entry;
2832                 my $comment = $tag{'subject'};
2833                 my $comment_short;
2834                 if (defined $comment) {
2835                         $comment_short = chop_str($comment, 30, 5);
2836                 }
2837                 if ($alternate) {
2838                         print "<tr class=\"dark\">\n";
2839                 } else {
2840                         print "<tr class=\"light\">\n";
2841                 }
2842                 $alternate ^= 1;
2843                 if (defined $tag{'age'}) {
2844                         print "<td><i>$tag{'age'}</i></td>\n";
2845                 } else {
2846                         print "<td></td>\n";
2847                 }
2848                 print "<td>" .
2849                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2850                                -class => "list name"}, esc_html($tag{'name'})) .
2851                       "</td>\n" .
2852                       "<td>";
2853                 if (defined $comment) {
2854                         print format_subject_html($comment, $comment_short,
2855                                                   href(action=>"tag", hash=>$tag{'id'}));
2856                 }
2857                 print "</td>\n" .
2858                       "<td class=\"selflink\">";
2859                 if ($tag{'type'} eq "tag") {
2860                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2861                 } else {
2862                         print "&nbsp;";
2863                 }
2864                 print "</td>\n" .
2865                       "<td class=\"link\">" . " | " .
2866                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2867                 if ($tag{'reftype'} eq "commit") {
2868                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2869                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2870                 } elsif ($tag{'reftype'} eq "blob") {
2871                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2872                 }
2873                 print "</td>\n" .
2874                       "</tr>";
2875         }
2876         if (defined $extra) {
2877                 print "<tr>\n" .
2878                       "<td colspan=\"5\">$extra</td>\n" .
2879                       "</tr>\n";
2880         }
2881         print "</table>\n";
2882 }
2883
2884 sub git_heads_body {
2885         # uses global variable $project
2886         my ($headlist, $head, $from, $to, $extra) = @_;
2887         $from = 0 unless defined $from;
2888         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2889
2890         print "<table class=\"heads\" cellspacing=\"0\">\n";
2891         my $alternate = 1;
2892         for (my $i = $from; $i <= $to; $i++) {
2893                 my $entry = $headlist->[$i];
2894                 my %ref = %$entry;
2895                 my $curr = $ref{'id'} eq $head;
2896                 if ($alternate) {
2897                         print "<tr class=\"dark\">\n";
2898                 } else {
2899                         print "<tr class=\"light\">\n";
2900                 }
2901                 $alternate ^= 1;
2902                 print "<td><i>$ref{'age'}</i></td>\n" .
2903                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2904                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2905                                -class => "list name"},esc_html($ref{'name'})) .
2906                       "</td>\n" .
2907                       "<td class=\"link\">" .
2908                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2909                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2910                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2911                       "</td>\n" .
2912                       "</tr>";
2913         }
2914         if (defined $extra) {
2915                 print "<tr>\n" .
2916                       "<td colspan=\"3\">$extra</td>\n" .
2917                       "</tr>\n";
2918         }
2919         print "</table>\n";
2920 }
2921
2922 sub git_search_grep_body {
2923         my ($commitlist, $from, $to, $extra) = @_;
2924         $from = 0 unless defined $from;
2925         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2926
2927         print "<table class=\"grep\" cellspacing=\"0\">\n";
2928         my $alternate = 1;
2929         for (my $i = $from; $i <= $to; $i++) {
2930                 my %co = %{$commitlist->[$i]};
2931                 if (!%co) {
2932                         next;
2933                 }
2934                 my $commit = $co{'id'};
2935                 if ($alternate) {
2936                         print "<tr class=\"dark\">\n";
2937                 } else {
2938                         print "<tr class=\"light\">\n";
2939                 }
2940                 $alternate ^= 1;
2941                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2942                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2943                       "<td>" .
2944                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2945                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2946                 my $comment = $co{'comment'};
2947                 foreach my $line (@$comment) {
2948                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2949                                 my $lead = esc_html($1) || "";
2950                                 $lead = chop_str($lead, 30, 10);
2951                                 my $match = esc_html($2) || "";
2952                                 my $trail = esc_html($3) || "";
2953                                 $trail = chop_str($trail, 30, 10);
2954                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2955                                 print chop_str($text, 80, 5) . "<br/>\n";
2956                         }
2957                 }
2958                 print "</td>\n" .
2959                       "<td class=\"link\">" .
2960                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2961                       " | " .
2962                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2963                 print "</td>\n" .
2964                       "</tr>\n";
2965         }
2966         if (defined $extra) {
2967                 print "<tr>\n" .
2968                       "<td colspan=\"3\">$extra</td>\n" .
2969                       "</tr>\n";
2970         }
2971         print "</table>\n";
2972 }
2973
2974 ## ======================================================================
2975 ## ======================================================================
2976 ## actions
2977
2978 sub git_project_list {
2979         my $order = $cgi->param('o');
2980         if (defined $order && $order !~ m/project|descr|owner|age/) {
2981                 die_error(undef, "Unknown order parameter");
2982         }
2983
2984         my @list = git_get_projects_list();
2985         if (!@list) {
2986                 die_error(undef, "No projects found");
2987         }
2988
2989         git_header_html();
2990         if (-f $home_text) {
2991                 print "<div class=\"index_include\">\n";
2992                 open (my $fd, $home_text);
2993                 print <$fd>;
2994                 close $fd;
2995                 print "</div>\n";
2996         }
2997         git_project_list_body(\@list, $order);
2998         git_footer_html();
2999 }
3000
3001 sub git_forks {
3002         my $order = $cgi->param('o');
3003         if (defined $order && $order !~ m/project|descr|owner|age/) {
3004                 die_error(undef, "Unknown order parameter");
3005         }
3006
3007         my @list = git_get_projects_list($project);
3008         if (!@list) {
3009                 die_error(undef, "No forks found");
3010         }
3011
3012         git_header_html();
3013         git_print_page_nav('','');
3014         git_print_header_div('summary', "$project forks");
3015         git_project_list_body(\@list, $order);
3016         git_footer_html();
3017 }
3018
3019 sub git_project_index {
3020         my @projects = git_get_projects_list($project);
3021
3022         print $cgi->header(
3023                 -type => 'text/plain',
3024                 -charset => 'utf-8',
3025                 -content_disposition => 'inline; filename="index.aux"');
3026
3027         foreach my $pr (@projects) {
3028                 if (!exists $pr->{'owner'}) {
3029                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3030                 }
3031
3032                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3033                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3034                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3035                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3036                 $path  =~ s/ /\+/g;
3037                 $owner =~ s/ /\+/g;
3038
3039                 print "$path $owner\n";
3040         }
3041 }
3042
3043 sub git_summary {
3044         my $descr = git_get_project_description($project) || "none";
3045         my %co = parse_commit("HEAD");
3046         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3047         my $head = $co{'id'};
3048
3049         my $owner = git_get_project_owner($project);
3050
3051         my $refs = git_get_references();
3052         # These get_*_list functions return one more to allow us to see if
3053         # there are more ...
3054         my @taglist  = git_get_tags_list(16);
3055         my @headlist = git_get_heads_list(16);
3056         my @forklist;
3057         my ($check_forks) = gitweb_check_feature('forks');
3058
3059         if ($check_forks) {
3060                 @forklist = git_get_projects_list($project);
3061         }
3062
3063         git_header_html();
3064         git_print_page_nav('summary','', $head);
3065
3066         print "<div class=\"title\">&nbsp;</div>\n";
3067         print "<table cellspacing=\"0\">\n" .
3068               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3069               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3070               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3071         # use per project git URL list in $projectroot/$project/cloneurl
3072         # or make project git URL from git base URL and project name
3073         my $url_tag = "URL";
3074         my @url_list = git_get_project_url_list($project);
3075         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3076         foreach my $git_url (@url_list) {
3077                 next unless $git_url;
3078                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3079                 $url_tag = "";
3080         }
3081         print "</table>\n";
3082
3083         if (-s "$projectroot/$project/README.html") {
3084                 if (open my $fd, "$projectroot/$project/README.html") {
3085                         print "<div class=\"title\">readme</div>\n";
3086                         print $_ while (<$fd>);
3087                         close $fd;
3088                 }
3089         }
3090
3091         # we need to request one more than 16 (0..15) to check if
3092         # those 16 are all
3093         my @commitlist = parse_commits($head, 17);
3094         git_print_header_div('shortlog');
3095         git_shortlog_body(\@commitlist, 0, 15, $refs,
3096                           $#commitlist <=  15 ? undef :
3097                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3098
3099         if (@taglist) {
3100                 git_print_header_div('tags');
3101                 git_tags_body(\@taglist, 0, 15,
3102                               $#taglist <=  15 ? undef :
3103                               $cgi->a({-href => href(action=>"tags")}, "..."));
3104         }
3105
3106         if (@headlist) {
3107                 git_print_header_div('heads');
3108                 git_heads_body(\@headlist, $head, 0, 15,
3109                                $#headlist <= 15 ? undef :
3110                                $cgi->a({-href => href(action=>"heads")}, "..."));
3111         }
3112
3113         if (@forklist) {
3114                 git_print_header_div('forks');
3115                 git_project_list_body(\@forklist, undef, 0, 15,
3116                                       $#forklist <= 15 ? undef :
3117                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3118                                       'noheader');
3119         }
3120
3121         git_footer_html();
3122 }
3123
3124 sub git_tag {
3125         my $head = git_get_head_hash($project);
3126         git_header_html();
3127         git_print_page_nav('','', $head,undef,$head);
3128         my %tag = parse_tag($hash);
3129         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3130         print "<div class=\"title_text\">\n" .
3131               "<table cellspacing=\"0\">\n" .
3132               "<tr>\n" .
3133               "<td>object</td>\n" .
3134               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3135                                $tag{'object'}) . "</td>\n" .
3136               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3137                                               $tag{'type'}) . "</td>\n" .
3138               "</tr>\n";
3139         if (defined($tag{'author'})) {
3140                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3141                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3142                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3143                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3144                         "</td></tr>\n";
3145         }
3146         print "</table>\n\n" .
3147               "</div>\n";
3148         print "<div class=\"page_body\">";
3149         my $comment = $tag{'comment'};
3150         foreach my $line (@$comment) {
3151                 chomp $line;
3152                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3153         }
3154         print "</div>\n";
3155         git_footer_html();
3156 }
3157
3158 sub git_blame2 {
3159         my $fd;
3160         my $ftype;
3161
3162         my ($have_blame) = gitweb_check_feature('blame');
3163         if (!$have_blame) {
3164                 die_error('403 Permission denied', "Permission denied");
3165         }
3166         die_error('404 Not Found', "File name not defined") if (!$file_name);
3167         $hash_base ||= git_get_head_hash($project);
3168         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3169         my %co = parse_commit($hash_base)
3170                 or die_error(undef, "Reading commit failed");
3171         if (!defined $hash) {
3172                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3173                         or die_error(undef, "Error looking up file");
3174         }
3175         $ftype = git_get_type($hash);
3176         if ($ftype !~ "blob") {
3177                 die_error('400 Bad Request', "Object is not a blob");
3178         }
3179         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3180               $file_name, $hash_base)
3181                 or die_error(undef, "Open git-blame failed");
3182         git_header_html();
3183         my $formats_nav =
3184                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3185                         "blob") .
3186                 " | " .
3187                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3188                         "history") .
3189                 " | " .
3190                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3191                         "HEAD");
3192         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3193         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3194         git_print_page_path($file_name, $ftype, $hash_base);
3195         my @rev_color = (qw(light2 dark2));
3196         my $num_colors = scalar(@rev_color);
3197         my $current_color = 0;
3198         my $last_rev;
3199         print <<HTML;
3200 <div class="page_body">
3201 <table class="blame">
3202 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3203 HTML
3204         my %metainfo = ();
3205         while (1) {
3206                 $_ = <$fd>;
3207                 last unless defined $_;
3208                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3209                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3210                 if (!exists $metainfo{$full_rev}) {
3211                         $metainfo{$full_rev} = {};
3212                 }
3213                 my $meta = $metainfo{$full_rev};
3214                 while (<$fd>) {
3215                         last if (s/^\t//);
3216                         if (/^(\S+) (.*)$/) {
3217                                 $meta->{$1} = $2;
3218                         }
3219                 }
3220                 my $data = $_;
3221                 chomp $data;
3222                 my $rev = substr($full_rev, 0, 8);
3223                 my $author = $meta->{'author'};
3224                 my %date = parse_date($meta->{'author-time'},
3225                                       $meta->{'author-tz'});
3226                 my $date = $date{'iso-tz'};
3227                 if ($group_size) {
3228                         $current_color = ++$current_color % $num_colors;
3229                 }
3230                 print "<tr class=\"$rev_color[$current_color]\">\n";
3231                 if ($group_size) {
3232                         print "<td class=\"sha1\"";
3233                         print " title=\"". esc_html($author) . ", $date\"";
3234                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3235                         print ">";
3236                         print $cgi->a({-href => href(action=>"commit",
3237                                                      hash=>$full_rev,
3238                                                      file_name=>$file_name)},
3239                                       esc_html($rev));
3240                         print "</td>\n";
3241                 }
3242                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3243                         or die_error(undef, "Open git-rev-parse failed");
3244                 my $parent_commit = <$dd>;
3245                 close $dd;
3246                 chomp($parent_commit);
3247                 my $blamed = href(action => 'blame',
3248                                   file_name => $meta->{'filename'},
3249                                   hash_base => $parent_commit);
3250                 print "<td class=\"linenr\">";
3251                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3252                                 -id => "l$lineno",
3253                                 -class => "linenr" },
3254                               esc_html($lineno));
3255                 print "</td>";
3256                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3257                 print "</tr>\n";
3258         }
3259         print "</table>\n";
3260         print "</div>";
3261         close $fd
3262                 or print "Reading blob failed\n";
3263         git_footer_html();
3264 }
3265
3266 sub git_blame {
3267         my $fd;
3268
3269         my ($have_blame) = gitweb_check_feature('blame');
3270         if (!$have_blame) {
3271                 die_error('403 Permission denied', "Permission denied");
3272         }
3273         die_error('404 Not Found', "File name not defined") if (!$file_name);
3274         $hash_base ||= git_get_head_hash($project);
3275         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3276         my %co = parse_commit($hash_base)
3277                 or die_error(undef, "Reading commit failed");
3278         if (!defined $hash) {
3279                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3280                         or die_error(undef, "Error lookup file");
3281         }
3282         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3283                 or die_error(undef, "Open git-annotate failed");
3284         git_header_html();
3285         my $formats_nav =
3286                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3287                         "blob") .
3288                 " | " .
3289                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3290                         "history") .
3291                 " | " .
3292                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3293                         "HEAD");
3294         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3295         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3296         git_print_page_path($file_name, 'blob', $hash_base);
3297         print "<div class=\"page_body\">\n";
3298         print <<HTML;
3299 <table class="blame">
3300   <tr>
3301     <th>Commit</th>
3302     <th>Age</th>
3303     <th>Author</th>
3304     <th>Line</th>
3305     <th>Data</th>
3306   </tr>
3307 HTML
3308         my @line_class = (qw(light dark));
3309         my $line_class_len = scalar (@line_class);
3310         my $line_class_num = $#line_class;
3311         while (my $line = <$fd>) {
3312                 my $long_rev;
3313                 my $short_rev;
3314                 my $author;
3315                 my $time;
3316                 my $lineno;
3317                 my $data;
3318                 my $age;
3319                 my $age_str;
3320                 my $age_class;
3321
3322                 chomp $line;
3323                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3324
3325                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3326                         $long_rev = $1;
3327                         $author   = $2;
3328                         $time     = $3;
3329                         $lineno   = $4;
3330                         $data     = $5;
3331                 } else {
3332                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3333                         next;
3334                 }
3335                 $short_rev  = substr ($long_rev, 0, 8);
3336                 $age        = time () - $time;
3337                 $age_str    = age_string ($age);
3338                 $age_str    =~ s/ /&nbsp;/g;
3339                 $age_class  = age_class($age);
3340                 $author     = esc_html ($author);
3341                 $author     =~ s/ /&nbsp;/g;
3342
3343                 $data = untabify($data);
3344                 $data = esc_html ($data);
3345
3346                 print <<HTML;
3347   <tr class="$line_class[$line_class_num]">
3348     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3349     <td class="$age_class">$age_str</td>
3350     <td>$author</td>
3351     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3352     <td class="pre">$data</td>
3353   </tr>
3354 HTML
3355         } # while (my $line = <$fd>)
3356         print "</table>\n\n";
3357         close $fd
3358                 or print "Reading blob failed.\n";
3359         print "</div>";
3360         git_footer_html();
3361 }
3362
3363 sub git_tags {
3364         my $head = git_get_head_hash($project);
3365         git_header_html();
3366         git_print_page_nav('','', $head,undef,$head);
3367         git_print_header_div('summary', $project);
3368
3369         my @tagslist = git_get_tags_list();
3370         if (@tagslist) {
3371                 git_tags_body(\@tagslist);
3372         }
3373         git_footer_html();
3374 }
3375
3376 sub git_heads {
3377         my $head = git_get_head_hash($project);
3378         git_header_html();
3379         git_print_page_nav('','', $head,undef,$head);
3380         git_print_header_div('summary', $project);
3381
3382         my @headslist = git_get_heads_list();
3383         if (@headslist) {
3384                 git_heads_body(\@headslist, $head);
3385         }
3386         git_footer_html();
3387 }
3388
3389 sub git_blob_plain {
3390         my $expires;
3391
3392         if (!defined $hash) {
3393                 if (defined $file_name) {
3394                         my $base = $hash_base || git_get_head_hash($project);
3395                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3396                                 or die_error(undef, "Error lookup file");
3397                 } else {
3398                         die_error(undef, "No file name defined");
3399                 }
3400         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3401                 # blobs defined by non-textual hash id's can be cached
3402                 $expires = "+1d";
3403         }
3404
3405         my $type = shift;
3406         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3407                 or die_error(undef, "Couldn't cat $file_name, $hash");
3408
3409         $type ||= blob_mimetype($fd, $file_name);
3410
3411         # save as filename, even when no $file_name is given
3412         my $save_as = "$hash";
3413         if (defined $file_name) {
3414                 $save_as = $file_name;
3415         } elsif ($type =~ m/^text\//) {
3416                 $save_as .= '.txt';
3417         }
3418
3419         print $cgi->header(
3420                 -type => "$type",
3421                 -expires=>$expires,
3422                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3423         undef $/;
3424         binmode STDOUT, ':raw';
3425         print <$fd>;
3426         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3427         $/ = "\n";
3428         close $fd;
3429 }
3430
3431 sub git_blob {
3432         my $expires;
3433
3434         if (!defined $hash) {
3435                 if (defined $file_name) {
3436                         my $base = $hash_base || git_get_head_hash($project);
3437                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3438                                 or die_error(undef, "Error lookup file");
3439                 } else {
3440                         die_error(undef, "No file name defined");
3441                 }
3442         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3443                 # blobs defined by non-textual hash id's can be cached
3444                 $expires = "+1d";
3445         }
3446
3447         my ($have_blame) = gitweb_check_feature('blame');
3448         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3449                 or die_error(undef, "Couldn't cat $file_name, $hash");
3450         my $mimetype = blob_mimetype($fd, $file_name);
3451         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3452                 close $fd;
3453                 return git_blob_plain($mimetype);
3454         }
3455         # we can have blame only for text/* mimetype
3456         $have_blame &&= ($mimetype =~ m!^text/!);
3457
3458         git_header_html(undef, $expires);
3459         my $formats_nav = '';
3460         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3461                 if (defined $file_name) {
3462                         if ($have_blame) {
3463                                 $formats_nav .=
3464                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3465                                                                hash=>$hash, file_name=>$file_name)},
3466                                                 "blame") .
3467                                         " | ";
3468                         }
3469                         $formats_nav .=
3470                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3471                                                        hash=>$hash, file_name=>$file_name)},
3472                                         "history") .
3473                                 " | " .
3474                                 $cgi->a({-href => href(action=>"blob_plain",
3475                                                        hash=>$hash, file_name=>$file_name)},
3476                                         "raw") .
3477                                 " | " .
3478                                 $cgi->a({-href => href(action=>"blob",
3479                                                        hash_base=>"HEAD", file_name=>$file_name)},
3480                                         "HEAD");
3481                 } else {
3482                         $formats_nav .=
3483                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3484                 }
3485                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3486                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3487         } else {
3488                 print "<div class=\"page_nav\">\n" .
3489                       "<br/><br/></div>\n" .
3490                       "<div class=\"title\">$hash</div>\n";
3491         }
3492         git_print_page_path($file_name, "blob", $hash_base);
3493         print "<div class=\"page_body\">\n";
3494         if ($mimetype =~ m!^text/!) {
3495                 my $nr;
3496                 while (my $line = <$fd>) {
3497                         chomp $line;
3498                         $nr++;
3499                         $line = untabify($line);
3500                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3501                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3502                 }
3503         } elsif ($mimetype =~ m!^image/!) {
3504                 print qq!<img type="$mimetype"!;
3505                 if ($file_name) {
3506                         print qq! alt="$file_name" title="$file_name"!;
3507                 }
3508                 print qq! src="! .
3509                       href(action=>"blob_plain", hash=>$hash,
3510                            hash_base=>$hash_base, file_name=>$file_name) .
3511                       qq!" />\n!;
3512         }
3513         close $fd
3514                 or print "Reading blob failed.\n";
3515         print "</div>";
3516         git_footer_html();
3517 }
3518
3519 sub git_tree {
3520         my $have_snapshot = gitweb_have_snapshot();
3521
3522         if (!defined $hash_base) {
3523                 $hash_base = "HEAD";
3524         }
3525         if (!defined $hash) {
3526                 if (defined $file_name) {
3527                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3528                 } else {
3529                         $hash = $hash_base;
3530                 }
3531         }
3532         $/ = "\0";
3533         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3534                 or die_error(undef, "Open git-ls-tree failed");
3535         my @entries = map { chomp; $_ } <$fd>;
3536         close $fd or die_error(undef, "Reading tree failed");
3537         $/ = "\n";
3538
3539         my $refs = git_get_references();
3540         my $ref = format_ref_marker($refs, $hash_base);
3541         git_header_html();
3542         my $basedir = '';
3543         my ($have_blame) = gitweb_check_feature('blame');
3544         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3545                 my @views_nav = ();
3546                 if (defined $file_name) {
3547                         push @views_nav,
3548                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3549                                                        hash=>$hash, file_name=>$file_name)},
3550                                         "history"),
3551                                 $cgi->a({-href => href(action=>"tree",
3552                                                        hash_base=>"HEAD", file_name=>$file_name)},
3553                                         "HEAD"),
3554                 }
3555                 if ($have_snapshot) {
3556                         # FIXME: Should be available when we have no hash base as well.
3557                         push @views_nav,
3558                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3559                                         "snapshot");
3560                 }
3561                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3562                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3563         } else {
3564                 undef $hash_base;
3565                 print "<div class=\"page_nav\">\n";
3566                 print "<br/><br/></div>\n";
3567                 print "<div class=\"title\">$hash</div>\n";
3568         }
3569         if (defined $file_name) {
3570                 $basedir = $file_name;
3571                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3572                         $basedir .= '/';
3573                 }
3574         }
3575         git_print_page_path($file_name, 'tree', $hash_base);
3576         print "<div class=\"page_body\">\n";
3577         print "<table cellspacing=\"0\">\n";
3578         my $alternate = 1;
3579         # '..' (top directory) link if possible
3580         if (defined $hash_base &&
3581             defined $file_name && $file_name =~ m![^/]+$!) {
3582                 if ($alternate) {
3583                         print "<tr class=\"dark\">\n";
3584                 } else {
3585                         print "<tr class=\"light\">\n";
3586                 }
3587                 $alternate ^= 1;
3588
3589                 my $up = $file_name;
3590                 $up =~ s!/?[^/]+$!!;
3591                 undef $up unless $up;
3592                 # based on git_print_tree_entry
3593                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3594                 print '<td class="list">';
3595                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3596                                              file_name=>$up)},
3597                               "..");
3598                 print "</td>\n";
3599                 print "<td class=\"link\"></td>\n";
3600
3601                 print "</tr>\n";
3602         }
3603         foreach my $line (@entries) {
3604                 my %t = parse_ls_tree_line($line, -z => 1);
3605
3606                 if ($alternate) {
3607                         print "<tr class=\"dark\">\n";
3608                 } else {
3609                         print "<tr class=\"light\">\n";
3610                 }
3611                 $alternate ^= 1;
3612
3613                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3614
3615                 print "</tr>\n";
3616         }
3617         print "</table>\n" .
3618               "</div>";
3619         git_footer_html();
3620 }
3621
3622 sub git_snapshot {
3623         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3624         my $have_snapshot = (defined $ctype && defined $suffix);
3625         if (!$have_snapshot) {
3626                 die_error('403 Permission denied', "Permission denied");
3627         }
3628
3629         if (!defined $hash) {
3630                 $hash = git_get_head_hash($project);
3631         }
3632
3633         my $filename = to_utf8(basename($project)) . "-$hash.tar.$suffix";
3634
3635         print $cgi->header(
3636                 -type => "application/$ctype",
3637                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3638                 -status => '200 OK');
3639
3640         my $git = git_cmd_str();
3641         my $name = $project;
3642         $name =~ s/\047/\047\\\047\047/g;
3643         open my $fd, "-|",
3644                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3645                 or die_error(undef, "Execute git-tar-tree failed");
3646         binmode STDOUT, ':raw';
3647         print <$fd>;
3648         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3649         close $fd;
3650
3651 }
3652
3653 sub git_log {
3654         my $head = git_get_head_hash($project);
3655         if (!defined $hash) {
3656                 $hash = $head;
3657         }
3658         if (!defined $page) {
3659                 $page = 0;
3660         }
3661         my $refs = git_get_references();
3662
3663         my @commitlist = parse_commits($hash, 101, (100 * $page));
3664
3665         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3666
3667         git_header_html();
3668         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3669
3670         if (!@commitlist) {
3671                 my %co = parse_commit($hash);
3672
3673                 git_print_header_div('summary', $project);
3674                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3675         }
3676         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3677         for (my $i = 0; $i <= $to; $i++) {
3678                 my %co = %{$commitlist[$i]};
3679                 next if !%co;
3680                 my $commit = $co{'id'};
3681                 my $ref = format_ref_marker($refs, $commit);
3682                 my %ad = parse_date($co{'author_epoch'});
3683                 git_print_header_div('commit',
3684                                "<span class=\"age\">$co{'age_string'}</span>" .
3685                                esc_html($co{'title'}) . $ref,
3686                                $commit);
3687                 print "<div class=\"title_text\">\n" .
3688                       "<div class=\"log_link\">\n" .
3689                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3690                       " | " .
3691                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3692                       " | " .
3693                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3694                       "<br/>\n" .
3695                       "</div>\n" .
3696                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3697                       "</div>\n";
3698
3699                 print "<div class=\"log_body\">\n";
3700                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3701                 print "</div>\n";
3702         }
3703         if ($#commitlist >= 100) {
3704                 print "<div class=\"page_nav\">\n";
3705                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3706                                -accesskey => "n", -title => "Alt-n"}, "next");
3707                 print "</div>\n";
3708         }
3709         git_footer_html();
3710 }
3711
3712 sub git_commit {
3713         $hash ||= $hash_base || "HEAD";
3714         my %co = parse_commit($hash);
3715         if (!%co) {
3716                 die_error(undef, "Unknown commit object");
3717         }
3718         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3719         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3720
3721         my $parent  = $co{'parent'};
3722         my $parents = $co{'parents'}; # listref
3723
3724         # we need to prepare $formats_nav before any parameter munging
3725         my $formats_nav;
3726         if (!defined $parent) {
3727                 # --root commitdiff
3728                 $formats_nav .= '(initial)';
3729         } elsif (@$parents == 1) {
3730                 # single parent commit
3731                 $formats_nav .=
3732                         '(parent: ' .
3733                         $cgi->a({-href => href(action=>"commit",
3734                                                hash=>$parent)},
3735                                 esc_html(substr($parent, 0, 7))) .
3736                         ')';
3737         } else {
3738                 # merge commit
3739                 $formats_nav .=
3740                         '(merge: ' .
3741                         join(' ', map {
3742                                 $cgi->a({-href => href(action=>"commit",
3743                                                        hash=>$_)},
3744                                         esc_html(substr($_, 0, 7)));
3745                         } @$parents ) .
3746                         ')';
3747         }
3748
3749         if (!defined $parent) {
3750                 $parent = "--root";
3751         }
3752         my @difftree;
3753         if (@$parents <= 1) {
3754                 # difftree output is not printed for merges
3755                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3756                         @diff_opts, $parent, $hash, "--"
3757                         or die_error(undef, "Open git-diff-tree failed");
3758                 @difftree = map { chomp; $_ } <$fd>;
3759                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3760         }
3761
3762         # non-textual hash id's can be cached
3763         my $expires;
3764         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3765                 $expires = "+1d";
3766         }
3767         my $refs = git_get_references();
3768         my $ref = format_ref_marker($refs, $co{'id'});
3769
3770         my $have_snapshot = gitweb_have_snapshot();
3771
3772         git_header_html(undef, $expires);
3773         git_print_page_nav('commit', '',
3774                            $hash, $co{'tree'}, $hash,
3775                            $formats_nav);
3776
3777         if (defined $co{'parent'}) {
3778                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3779         } else {
3780                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3781         }
3782         print "<div class=\"title_text\">\n" .
3783               "<table cellspacing=\"0\">\n";
3784         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3785               "<tr>" .
3786               "<td></td><td> $ad{'rfc2822'}";
3787         if ($ad{'hour_local'} < 6) {
3788                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3789                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3790         } else {
3791                 printf(" (%02d:%02d %s)",
3792                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3793         }
3794         print "</td>" .
3795               "</tr>\n";
3796         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3797         print "<tr><td></td><td> $cd{'rfc2822'}" .
3798               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3799               "</td></tr>\n";
3800         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3801         print "<tr>" .
3802               "<td>tree</td>" .
3803               "<td class=\"sha1\">" .
3804               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3805                        class => "list"}, $co{'tree'}) .
3806               "</td>" .
3807               "<td class=\"link\">" .
3808               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3809                       "tree");
3810         if ($have_snapshot) {
3811                 print " | " .
3812                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3813         }
3814         print "</td>" .
3815               "</tr>\n";
3816
3817         foreach my $par (@$parents) {
3818                 print "<tr>" .
3819                       "<td>parent</td>" .
3820                       "<td class=\"sha1\">" .
3821                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3822                                class => "list"}, $par) .
3823                       "</td>" .
3824                       "<td class=\"link\">" .
3825                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3826                       " | " .
3827                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3828                       "</td>" .
3829                       "</tr>\n";
3830         }
3831         print "</table>".
3832               "</div>\n";
3833
3834         print "<div class=\"page_body\">\n";
3835         git_print_log($co{'comment'});
3836         print "</div>\n";
3837
3838         if (@$parents <= 1) {
3839                 # do not output difftree/whatchanged for merges
3840                 git_difftree_body(\@difftree, $hash, $parent);
3841         }
3842
3843         git_footer_html();
3844 }
3845
3846 sub git_object {
3847         # object is defined by:
3848         # - hash or hash_base alone
3849         # - hash_base and file_name
3850         my $type;
3851
3852         # - hash or hash_base alone
3853         if ($hash || ($hash_base && !defined $file_name)) {
3854                 my $object_id = $hash || $hash_base;
3855
3856                 my $git_command = git_cmd_str();
3857                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3858                         or die_error('404 Not Found', "Object does not exist");
3859                 $type = <$fd>;
3860                 chomp $type;
3861                 close $fd
3862                         or die_error('404 Not Found', "Object does not exist");
3863
3864         # - hash_base and file_name
3865         } elsif ($hash_base && defined $file_name) {
3866                 $file_name =~ s,/+$,,;
3867
3868                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3869                         or die_error('404 Not Found', "Base object does not exist");
3870
3871                 # here errors should not hapen
3872                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3873                         or die_error(undef, "Open git-ls-tree failed");
3874                 my $line = <$fd>;
3875                 close $fd;
3876
3877                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3878                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3879                         die_error('404 Not Found', "File or directory for given base does not exist");
3880                 }
3881                 $type = $2;
3882                 $hash = $3;
3883         } else {
3884                 die_error('404 Not Found', "Not enough information to find object");
3885         }
3886
3887         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3888                                           hash=>$hash, hash_base=>$hash_base,
3889                                           file_name=>$file_name),
3890                              -status => '302 Found');
3891 }
3892
3893 sub git_blobdiff {
3894         my $format = shift || 'html';
3895
3896         my $fd;
3897         my @difftree;
3898         my %diffinfo;
3899         my $expires;
3900
3901         # preparing $fd and %diffinfo for git_patchset_body
3902         # new style URI
3903         if (defined $hash_base && defined $hash_parent_base) {
3904                 if (defined $file_name) {
3905                         # read raw output
3906                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3907                                 $hash_parent_base, $hash_base,
3908                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
3909                                 or die_error(undef, "Open git-diff-tree failed");
3910                         @difftree = map { chomp; $_ } <$fd>;
3911                         close $fd
3912                                 or die_error(undef, "Reading git-diff-tree failed");
3913                         @difftree
3914                                 or die_error('404 Not Found', "Blob diff not found");
3915
3916                 } elsif (defined $hash &&
3917                          $hash =~ /[0-9a-fA-F]{40}/) {
3918                         # try to find filename from $hash
3919
3920                         # read filtered raw output
3921                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3922                                 $hash_parent_base, $hash_base, "--"
3923                                 or die_error(undef, "Open git-diff-tree failed");
3924                         @difftree =
3925                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3926                                 # $hash == to_id
3927                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3928                                 map { chomp; $_ } <$fd>;
3929                         close $fd
3930                                 or die_error(undef, "Reading git-diff-tree failed");
3931                         @difftree
3932                                 or die_error('404 Not Found', "Blob diff not found");
3933
3934                 } else {
3935                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3936                 }
3937
3938                 if (@difftree > 1) {
3939                         die_error('404 Not Found', "Ambiguous blob diff specification");
3940                 }
3941
3942                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3943                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3944                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3945
3946                 $hash_parent ||= $diffinfo{'from_id'};
3947                 $hash        ||= $diffinfo{'to_id'};
3948
3949                 # non-textual hash id's can be cached
3950                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3951                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3952                         $expires = '+1d';
3953                 }
3954
3955                 # open patch output
3956                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3957                         '-p', ($format eq 'html' ? "--full-index" : ()),
3958                         $hash_parent_base, $hash_base,
3959                         "--", (defined $file_parent ? $file_parent : ()), $file_name
3960                         or die_error(undef, "Open git-diff-tree failed");
3961         }
3962
3963         # old/legacy style URI
3964         if (!%diffinfo && # if new style URI failed
3965             defined $hash && defined $hash_parent) {
3966                 # fake git-diff-tree raw output
3967                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3968                 $diffinfo{'from_id'} = $hash_parent;
3969                 $diffinfo{'to_id'}   = $hash;
3970                 if (defined $file_name) {
3971                         if (defined $file_parent) {
3972                                 $diffinfo{'status'} = '2';
3973                                 $diffinfo{'from_file'} = $file_parent;
3974                                 $diffinfo{'to_file'}   = $file_name;
3975                         } else { # assume not renamed
3976                                 $diffinfo{'status'} = '1';
3977                                 $diffinfo{'from_file'} = $file_name;
3978                                 $diffinfo{'to_file'}   = $file_name;
3979                         }
3980                 } else { # no filename given
3981                         $diffinfo{'status'} = '2';
3982                         $diffinfo{'from_file'} = $hash_parent;
3983                         $diffinfo{'to_file'}   = $hash;
3984                 }
3985
3986                 # non-textual hash id's can be cached
3987                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3988                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3989                         $expires = '+1d';
3990                 }
3991
3992                 # open patch output
3993                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
3994                         '-p', ($format eq 'html' ? "--full-index" : ()),
3995                         $hash_parent, $hash, "--"
3996                         or die_error(undef, "Open git-diff failed");
3997         } else  {
3998                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3999                         unless %diffinfo;
4000         }
4001
4002         # header
4003         if ($format eq 'html') {
4004                 my $formats_nav =
4005                         $cgi->a({-href => href(action=>"blobdiff_plain",
4006                                                hash=>$hash, hash_parent=>$hash_parent,
4007                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4008                                                file_name=>$file_name, file_parent=>$file_parent)},
4009                                 "raw");
4010                 git_header_html(undef, $expires);
4011                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4012                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4013                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4014                 } else {
4015                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4016                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4017                 }
4018                 if (defined $file_name) {
4019                         git_print_page_path($file_name, "blob", $hash_base);
4020                 } else {
4021                         print "<div class=\"page_path\"></div>\n";
4022                 }
4023
4024         } elsif ($format eq 'plain') {
4025                 print $cgi->header(
4026                         -type => 'text/plain',
4027                         -charset => 'utf-8',
4028                         -expires => $expires,
4029                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4030
4031                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4032
4033         } else {
4034                 die_error(undef, "Unknown blobdiff format");
4035         }
4036
4037         # patch
4038         if ($format eq 'html') {
4039                 print "<div class=\"page_body\">\n";
4040
4041                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4042                 close $fd;
4043
4044                 print "</div>\n"; # class="page_body"
4045                 git_footer_html();
4046
4047         } else {
4048                 while (my $line = <$fd>) {
4049                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4050                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4051
4052                         print $line;
4053
4054                         last if $line =~ m!^\+\+\+!;
4055                 }
4056                 local $/ = undef;
4057                 print <$fd>;
4058                 close $fd;
4059         }
4060 }
4061
4062 sub git_blobdiff_plain {
4063         git_blobdiff('plain');
4064 }
4065
4066 sub git_commitdiff {
4067         my $format = shift || 'html';
4068         $hash ||= $hash_base || "HEAD";
4069         my %co = parse_commit($hash);
4070         if (!%co) {
4071                 die_error(undef, "Unknown commit object");
4072         }
4073
4074         # we need to prepare $formats_nav before any parameter munging
4075         my $formats_nav;
4076         if ($format eq 'html') {
4077                 $formats_nav =
4078                         $cgi->a({-href => href(action=>"commitdiff_plain",
4079                                                hash=>$hash, hash_parent=>$hash_parent)},
4080                                 "raw");
4081
4082                 if (defined $hash_parent) {
4083                         # commitdiff with two commits given
4084                         my $hash_parent_short = $hash_parent;
4085                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4086                                 $hash_parent_short = substr($hash_parent, 0, 7);
4087                         }
4088                         $formats_nav .=
4089                                 ' (from: ' .
4090                                 $cgi->a({-href => href(action=>"commitdiff",
4091                                                        hash=>$hash_parent)},
4092                                         esc_html($hash_parent_short)) .
4093                                 ')';
4094                 } elsif (!$co{'parent'}) {
4095                         # --root commitdiff
4096                         $formats_nav .= ' (initial)';
4097                 } elsif (scalar @{$co{'parents'}} == 1) {
4098                         # single parent commit
4099                         $formats_nav .=
4100                                 ' (parent: ' .
4101                                 $cgi->a({-href => href(action=>"commitdiff",
4102                                                        hash=>$co{'parent'})},
4103                                         esc_html(substr($co{'parent'}, 0, 7))) .
4104                                 ')';
4105                 } else {
4106                         # merge commit
4107                         $formats_nav .=
4108                                 ' (merge: ' .
4109                                 join(' ', map {
4110                                         $cgi->a({-href => href(action=>"commitdiff",
4111                                                                hash=>$_)},
4112                                                 esc_html(substr($_, 0, 7)));
4113                                 } @{$co{'parents'}} ) .
4114                                 ')';
4115                 }
4116         }
4117
4118         if (!defined $hash_parent) {
4119                 $hash_parent = $co{'parent'} || '--root';
4120         }
4121
4122         # read commitdiff
4123         my $fd;
4124         my @difftree;
4125         if ($format eq 'html') {
4126                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4127                         "--no-commit-id", "--patch-with-raw", "--full-index",
4128                         $hash_parent, $hash, "--"
4129                         or die_error(undef, "Open git-diff-tree failed");
4130
4131                 while (my $line = <$fd>) {
4132                         chomp $line;
4133                         # empty line ends raw part of diff-tree output
4134                         last unless $line;
4135                         push @difftree, $line;
4136                 }
4137
4138         } elsif ($format eq 'plain') {
4139                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4140                         '-p', $hash_parent, $hash, "--"
4141                         or die_error(undef, "Open git-diff-tree failed");
4142
4143         } else {
4144                 die_error(undef, "Unknown commitdiff format");
4145         }
4146
4147         # non-textual hash id's can be cached
4148         my $expires;
4149         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4150                 $expires = "+1d";
4151         }
4152
4153         # write commit message
4154         if ($format eq 'html') {
4155                 my $refs = git_get_references();
4156                 my $ref = format_ref_marker($refs, $co{'id'});
4157
4158                 git_header_html(undef, $expires);
4159                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4160                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4161                 git_print_authorship(\%co);
4162                 print "<div class=\"page_body\">\n";
4163                 if (@{$co{'comment'}} > 1) {
4164                         print "<div class=\"log\">\n";
4165                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4166                         print "</div>\n"; # class="log"
4167                 }
4168
4169         } elsif ($format eq 'plain') {
4170                 my $refs = git_get_references("tags");
4171                 my $tagname = git_get_rev_name_tags($hash);
4172                 my $filename = basename($project) . "-$hash.patch";
4173
4174                 print $cgi->header(
4175                         -type => 'text/plain',
4176                         -charset => 'utf-8',
4177                         -expires => $expires,
4178                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4179                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4180                 print <<TEXT;
4181 From: $co{'author'}
4182 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4183 Subject: $co{'title'}
4184 TEXT
4185                 print "X-Git-Tag: $tagname\n" if $tagname;
4186                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4187
4188                 foreach my $line (@{$co{'comment'}}) {
4189                         print "$line\n";
4190                 }
4191                 print "---\n\n";
4192         }
4193
4194         # write patch
4195         if ($format eq 'html') {
4196                 git_difftree_body(\@difftree, $hash, $hash_parent);
4197                 print "<br/>\n";
4198
4199                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4200                 close $fd;
4201                 print "</div>\n"; # class="page_body"
4202                 git_footer_html();
4203
4204         } elsif ($format eq 'plain') {
4205                 local $/ = undef;
4206                 print <$fd>;
4207                 close $fd
4208                         or print "Reading git-diff-tree failed\n";
4209         }
4210 }
4211
4212 sub git_commitdiff_plain {
4213         git_commitdiff('plain');
4214 }
4215
4216 sub git_history {
4217         if (!defined $hash_base) {
4218                 $hash_base = git_get_head_hash($project);
4219         }
4220         if (!defined $page) {
4221                 $page = 0;
4222         }
4223         my $ftype;
4224         my %co = parse_commit($hash_base);
4225         if (!%co) {
4226                 die_error(undef, "Unknown commit object");
4227         }
4228
4229         my $refs = git_get_references();
4230         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4231
4232         if (!defined $hash && defined $file_name) {
4233                 $hash = git_get_hash_by_path($hash_base, $file_name);
4234         }
4235         if (defined $hash) {
4236                 $ftype = git_get_type($hash);
4237         }
4238
4239         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4240
4241         my $paging_nav = '';
4242         if ($page > 0) {
4243                 $paging_nav .=
4244                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4245                                                file_name=>$file_name)},
4246                                 "first");
4247                 $paging_nav .= " &sdot; " .
4248                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4249                                                file_name=>$file_name, page=>$page-1),
4250                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4251         } else {
4252                 $paging_nav .= "first";
4253                 $paging_nav .= " &sdot; prev";
4254         }
4255         if ($#commitlist >= 100) {
4256                 $paging_nav .= " &sdot; " .
4257                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4258                                                file_name=>$file_name, page=>$page+1),
4259                                  -accesskey => "n", -title => "Alt-n"}, "next");
4260         } else {
4261                 $paging_nav .= " &sdot; next";
4262         }
4263         my $next_link = '';
4264         if ($#commitlist >= 100) {
4265                 $next_link =
4266                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4267                                                file_name=>$file_name, page=>$page+1),
4268                                  -accesskey => "n", -title => "Alt-n"}, "next");
4269         }
4270
4271         git_header_html();
4272         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4273         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4274         git_print_page_path($file_name, $ftype, $hash_base);
4275
4276         git_history_body(\@commitlist, 0, 99,
4277                          $refs, $hash_base, $ftype, $next_link);
4278
4279         git_footer_html();
4280 }
4281
4282 sub git_search {
4283         my ($have_search) = gitweb_check_feature('search');
4284         if (!$have_search) {
4285                 die_error('403 Permission denied', "Permission denied");
4286         }
4287         if (!defined $searchtext) {
4288                 die_error(undef, "Text field empty");
4289         }
4290         if (!defined $hash) {
4291                 $hash = git_get_head_hash($project);
4292         }
4293         my %co = parse_commit($hash);
4294         if (!%co) {
4295                 die_error(undef, "Unknown commit object");
4296         }
4297         if (!defined $page) {
4298                 $page = 0;
4299         }
4300
4301         $searchtype ||= 'commit';
4302         if ($searchtype eq 'pickaxe') {
4303                 # pickaxe may take all resources of your box and run for several minutes
4304                 # with every query - so decide by yourself how public you make this feature
4305                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4306                 if (!$have_pickaxe) {
4307                         die_error('403 Permission denied', "Permission denied");
4308                 }
4309         }
4310
4311         git_header_html();
4312
4313         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4314                 my $greptype;
4315                 if ($searchtype eq 'commit') {
4316                         $greptype = "--grep=";
4317                 } elsif ($searchtype eq 'author') {
4318                         $greptype = "--author=";
4319                 } elsif ($searchtype eq 'committer') {
4320                         $greptype = "--committer=";
4321                 }
4322                 $greptype .= $searchtext;
4323                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4324
4325                 my $paging_nav = '';
4326                 if ($page > 0) {
4327                         $paging_nav .=
4328                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4329                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4330                                         "first");
4331                         $paging_nav .= " &sdot; " .
4332                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4333                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4334                                                        page=>$page-1),
4335                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4336                 } else {
4337                         $paging_nav .= "first";
4338                         $paging_nav .= " &sdot; prev";
4339                 }
4340                 if ($#commitlist >= 100) {
4341                         $paging_nav .= " &sdot; " .
4342                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4343                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4344                                                        page=>$page+1),
4345                                          -accesskey => "n", -title => "Alt-n"}, "next");
4346                 } else {
4347                         $paging_nav .= " &sdot; next";
4348                 }
4349                 my $next_link = '';
4350                 if ($#commitlist >= 100) {
4351                         $next_link =
4352                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4353                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4354                                                        page=>$page+1),
4355                                          -accesskey => "n", -title => "Alt-n"}, "next");
4356                 }
4357
4358                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4359                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4360                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4361         }
4362
4363         if ($searchtype eq 'pickaxe') {
4364                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4365                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4366
4367                 print "<table cellspacing=\"0\">\n";
4368                 my $alternate = 1;
4369                 $/ = "\n";
4370                 my $git_command = git_cmd_str();
4371                 open my $fd, "-|", "$git_command rev-list $hash | " .
4372                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4373                 undef %co;
4374                 my @files;
4375                 while (my $line = <$fd>) {
4376                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4377                                 my %set;
4378                                 $set{'file'} = $6;
4379                                 $set{'from_id'} = $3;
4380                                 $set{'to_id'} = $4;
4381                                 $set{'id'} = $set{'to_id'};
4382                                 if ($set{'id'} =~ m/0{40}/) {
4383                                         $set{'id'} = $set{'from_id'};
4384                                 }
4385                                 if ($set{'id'} =~ m/0{40}/) {
4386                                         next;
4387                                 }
4388                                 push @files, \%set;
4389                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4390                                 if (%co) {
4391                                         if ($alternate) {
4392                                                 print "<tr class=\"dark\">\n";
4393                                         } else {
4394                                                 print "<tr class=\"light\">\n";
4395                                         }
4396                                         $alternate ^= 1;
4397                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4398                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4399                                               "<td>" .
4400                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4401                                                       -class => "list subject"},
4402                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4403                                         while (my $setref = shift @files) {
4404                                                 my %set = %$setref;
4405                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4406                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4407                                                               -class => "list"},
4408                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4409                                                       "<br/>\n";
4410                                         }
4411                                         print "</td>\n" .
4412                                               "<td class=\"link\">" .
4413                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4414                                               " | " .
4415                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4416                                         print "</td>\n" .
4417                                               "</tr>\n";
4418                                 }
4419                                 %co = parse_commit($1);
4420                         }
4421                 }
4422                 close $fd;
4423
4424                 print "</table>\n";
4425         }
4426         git_footer_html();
4427 }
4428
4429 sub git_search_help {
4430         git_header_html();
4431         git_print_page_nav('','', $hash,$hash,$hash);
4432         print <<EOT;
4433 <dl>
4434 <dt><b>commit</b></dt>
4435 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4436 <dt><b>author</b></dt>
4437 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4438 <dt><b>committer</b></dt>
4439 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4440 EOT
4441         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4442         if ($have_pickaxe) {
4443                 print <<EOT;
4444 <dt><b>pickaxe</b></dt>
4445 <dd>All commits that caused the string to appear or disappear from any file (changes that
4446 added, removed or "modified" the string) will be listed. This search can take a while and
4447 takes a lot of strain on the server, so please use it wisely.</dd>
4448 EOT
4449         }
4450         print "</dl>\n";
4451         git_footer_html();
4452 }
4453
4454 sub git_shortlog {
4455         my $head = git_get_head_hash($project);
4456         if (!defined $hash) {
4457                 $hash = $head;
4458         }
4459         if (!defined $page) {
4460                 $page = 0;
4461         }
4462         my $refs = git_get_references();
4463
4464         my @commitlist = parse_commits($hash, 101, (100 * $page));
4465
4466         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4467         my $next_link = '';
4468         if ($#commitlist >= 100) {
4469                 $next_link =
4470                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4471                                  -accesskey => "n", -title => "Alt-n"}, "next");
4472         }
4473
4474         git_header_html();
4475         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4476         git_print_header_div('summary', $project);
4477
4478         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4479
4480         git_footer_html();
4481 }
4482
4483 ## ......................................................................
4484 ## feeds (RSS, Atom; OPML)
4485
4486 sub git_feed {
4487         my $format = shift || 'atom';
4488         my ($have_blame) = gitweb_check_feature('blame');
4489
4490         # Atom: http://www.atomenabled.org/developers/syndication/
4491         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4492         if ($format ne 'rss' && $format ne 'atom') {
4493                 die_error(undef, "Unknown web feed format");
4494         }
4495
4496         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4497         my $head = $hash || 'HEAD';
4498         my @commitlist = parse_commits($head, 150);
4499
4500         my %latest_commit;
4501         my %latest_date;
4502         my $content_type = "application/$format+xml";
4503         if (defined $cgi->http('HTTP_ACCEPT') &&
4504                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4505                 # browser (feed reader) prefers text/xml
4506                 $content_type = 'text/xml';
4507         }
4508         if (defined($commitlist[0])) {
4509                 %latest_commit = %{$commitlist[0]};
4510                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4511                 print $cgi->header(
4512                         -type => $content_type,
4513                         -charset => 'utf-8',
4514                         -last_modified => $latest_date{'rfc2822'});
4515         } else {
4516                 print $cgi->header(
4517                         -type => $content_type,
4518                         -charset => 'utf-8');
4519         }
4520
4521         # Optimization: skip generating the body if client asks only
4522         # for Last-Modified date.
4523         return if ($cgi->request_method() eq 'HEAD');
4524
4525         # header variables
4526         my $title = "$site_name - $project/$action";
4527         my $feed_type = 'log';
4528         if (defined $hash) {
4529                 $title .= " - '$hash'";
4530                 $feed_type = 'branch log';
4531                 if (defined $file_name) {
4532                         $title .= " :: $file_name";
4533                         $feed_type = 'history';
4534                 }
4535         } elsif (defined $file_name) {
4536                 $title .= " - $file_name";
4537                 $feed_type = 'history';
4538         }
4539         $title .= " $feed_type";
4540         my $descr = git_get_project_description($project);
4541         if (defined $descr) {
4542                 $descr = esc_html($descr);
4543         } else {
4544                 $descr = "$project " .
4545                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4546                          " feed";
4547         }
4548         my $owner = git_get_project_owner($project);
4549         $owner = esc_html($owner);
4550
4551         #header
4552         my $alt_url;
4553         if (defined $file_name) {
4554                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4555         } elsif (defined $hash) {
4556                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4557         } else {
4558                 $alt_url = href(-full=>1, action=>"summary");
4559         }
4560         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4561         if ($format eq 'rss') {
4562                 print <<XML;
4563 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4564 <channel>
4565 XML
4566                 print "<title>$title</title>\n" .
4567                       "<link>$alt_url</link>\n" .
4568                       "<description>$descr</description>\n" .
4569                       "<language>en</language>\n";
4570         } elsif ($format eq 'atom') {
4571                 print <<XML;
4572 <feed xmlns="http://www.w3.org/2005/Atom">
4573 XML
4574                 print "<title>$title</title>\n" .
4575                       "<subtitle>$descr</subtitle>\n" .
4576                       '<link rel="alternate" type="text/html" href="' .
4577                       $alt_url . '" />' . "\n" .
4578                       '<link rel="self" type="' . $content_type . '" href="' .
4579                       $cgi->self_url() . '" />' . "\n" .
4580                       "<id>" . href(-full=>1) . "</id>\n" .
4581                       # use project owner for feed author
4582                       "<author><name>$owner</name></author>\n";
4583                 if (defined $favicon) {
4584                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4585                 }
4586                 if (defined $logo_url) {
4587                         # not twice as wide as tall: 72 x 27 pixels
4588                         print "<logo>" . esc_url($logo) . "</logo>\n";
4589                 }
4590                 if (! %latest_date) {
4591                         # dummy date to keep the feed valid until commits trickle in:
4592                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4593                 } else {
4594                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4595                 }
4596         }
4597
4598         # contents
4599         for (my $i = 0; $i <= $#commitlist; $i++) {
4600                 my %co = %{$commitlist[$i]};
4601                 my $commit = $co{'id'};
4602                 # we read 150, we always show 30 and the ones more recent than 48 hours
4603                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4604                         last;
4605                 }
4606                 my %cd = parse_date($co{'author_epoch'});
4607
4608                 # get list of changed files
4609                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4610                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4611                         or next;
4612                 my @difftree = map { chomp; $_ } <$fd>;
4613                 close $fd
4614                         or next;
4615
4616                 # print element (entry, item)
4617                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4618                 if ($format eq 'rss') {
4619                         print "<item>\n" .
4620                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4621                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4622                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4623                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4624                               "<link>$co_url</link>\n" .
4625                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4626                               "<content:encoded>" .
4627                               "<![CDATA[\n";
4628                 } elsif ($format eq 'atom') {
4629                         print "<entry>\n" .
4630                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4631                               "<updated>$cd{'iso-8601'}</updated>\n" .
4632                               "<author>\n" .
4633                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4634                         if ($co{'author_email'}) {
4635                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4636                         }
4637                         print "</author>\n" .
4638                               # use committer for contributor
4639                               "<contributor>\n" .
4640                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4641                         if ($co{'committer_email'}) {
4642                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4643                         }
4644                         print "</contributor>\n" .
4645                               "<published>$cd{'iso-8601'}</published>\n" .
4646                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4647                               "<id>$co_url</id>\n" .
4648                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4649                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4650                 }
4651                 my $comment = $co{'comment'};
4652                 print "<pre>\n";
4653                 foreach my $line (@$comment) {
4654                         $line = esc_html($line);
4655                         print "$line\n";
4656                 }
4657                 print "</pre><ul>\n";
4658                 foreach my $difftree_line (@difftree) {
4659                         my %difftree = parse_difftree_raw_line($difftree_line);
4660                         next if !$difftree{'from_id'};
4661
4662                         my $file = $difftree{'file'} || $difftree{'to_file'};
4663
4664                         print "<li>" .
4665                               "[" .
4666                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4667                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4668                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4669                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4670                                       -title => "diff"}, 'D');
4671                         if ($have_blame) {
4672                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4673                                                              file_name=>$file, hash_base=>$commit),
4674                                               -title => "blame"}, 'B');
4675                         }
4676                         # if this is not a feed of a file history
4677                         if (!defined $file_name || $file_name ne $file) {
4678                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4679                                                              file_name=>$file, hash=>$commit),
4680                                               -title => "history"}, 'H');
4681                         }
4682                         $file = esc_path($file);
4683                         print "] ".
4684                               "$file</li>\n";
4685                 }
4686                 if ($format eq 'rss') {
4687                         print "</ul>]]>\n" .
4688                               "</content:encoded>\n" .
4689                               "</item>\n";
4690                 } elsif ($format eq 'atom') {
4691                         print "</ul>\n</div>\n" .
4692                               "</content>\n" .
4693                               "</entry>\n";
4694                 }
4695         }
4696
4697         # end of feed
4698         if ($format eq 'rss') {
4699                 print "</channel>\n</rss>\n";
4700         }       elsif ($format eq 'atom') {
4701                 print "</feed>\n";
4702         }
4703 }
4704
4705 sub git_rss {
4706         git_feed('rss');
4707 }
4708
4709 sub git_atom {
4710         git_feed('atom');
4711 }
4712
4713 sub git_opml {
4714         my @list = git_get_projects_list();
4715
4716         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4717         print <<XML;
4718 <?xml version="1.0" encoding="utf-8"?>
4719 <opml version="1.0">
4720 <head>
4721   <title>$site_name OPML Export</title>
4722 </head>
4723 <body>
4724 <outline text="git RSS feeds">
4725 XML
4726
4727         foreach my $pr (@list) {
4728                 my %proj = %$pr;
4729                 my $head = git_get_head_hash($proj{'path'});
4730                 if (!defined $head) {
4731                         next;
4732                 }
4733                 $git_dir = "$projectroot/$proj{'path'}";
4734                 my %co = parse_commit($head);
4735                 if (!%co) {
4736                         next;
4737                 }
4738
4739                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4740                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4741                 my $html = "$my_url?p=$proj{'path'};a=summary";
4742                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4743         }
4744         print <<XML;
4745 </outline>
4746 </body>
4747 </opml>
4748 XML
4749 }