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

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++"
  43                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  44
  45 # filename of html text to include at top of each page
  46 our $site_header = "++GITWEB_SITE_HEADER++";
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49 # filename of html text to include at bottom of each page
  50 our $site_footer = "++GITWEB_SITE_FOOTER++";
  51
  52 # URI of stylesheets
  53 our @stylesheets = ("++GITWEB_CSS++");
  54 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55 our $stylesheet = undef;
  56
  57 # URI of GIT logo (72x27 size)
  58 our $logo = "++GITWEB_LOGO++";
  59 # URI of GIT favicon, assumed to be image/png type
  60 our $favicon = "++GITWEB_FAVICON++";
  61
  62 # URI and label (title) of GIT logo link
  63 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  64 #our $logo_label = "git documentation";
  65 our $logo_url = "http://git.or.cz/";
  66 our $logo_label = "git homepage";
  67
  68 # source of projects list
  69 our $projects_list = "++GITWEB_LIST++";
  70
  71 # show repository only if this file exists
  72 # (only effective if this variable evaluates to true)
  73 our $export_ok = "++GITWEB_EXPORT_OK++";
  74
  75 # only allow viewing of repositories also shown on the overview page
  76 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  77
  78 # list of git base URLs used for URL to where fetch project from,
  79 # i.e. full URL is "$git_base_url/$project"
  80 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  81
  82 # default blob_plain mimetype and default charset for text/plain blob
  83 our $default_blob_plain_mimetype = 'text/plain';
  84 our $default_text_plain_charset  = undef;
  85
  86 # file to use for guessing MIME types before trying /etc/mime.types
  87 # (relative to the current git repository)
  88 our $mimetypes_file = undef;
  89
  90 # You define site-wide feature defaults here; override them with
  91 # $GITWEB_CONFIG as necessary.
  92 our %feature = (
  93         # feature => {
  94         #       'sub' => feature-sub (subroutine),
  95         #       'override' => allow-override (boolean),
  96         #       'default' => [ default options...] (array reference)}
  97         #
  98         # if feature is overridable (it means that allow-override has true value,
  99         # then feature-sub will be called with default options as parameters;
 100         # return value of feature-sub indicates if to enable specified feature
 101         #
 102         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 103
 104         # Enable the 'blame' blob view, showing the last commit that modified
 105         # each line in the file. This can be very CPU-intensive.
 106
 107         # To enable system wide have in $GITWEB_CONFIG
 108         # $feature{'blame'}{'default'} = [1];
 109         # To have project specific config enable override in $GITWEB_CONFIG
 110         # $feature{'blame'}{'override'} = 1;
 111         # and in project config gitweb.blame = 0|1;
 112         'blame' => {
 113                 'sub' => \&feature_blame,
 114                 'override' => 0,
 115                 'default' => [0]},
 116
 117         # Enable the 'snapshot' link, providing a compressed tarball of any
 118         # tree. This can potentially generate high traffic if you have large
 119         # project.
 120
 121         # To disable system wide have in $GITWEB_CONFIG
 122         # $feature{'snapshot'}{'default'} = [undef];
 123         # To have project specific config enable override in $GITWEB_CONFIG
 124         # $feature{'blame'}{'override'} = 1;
 125         # and in project config gitweb.snapshot = none|gzip|bzip2;
 126         'snapshot' => {
 127                 'sub' => \&feature_snapshot,
 128                 'override' => 0,
 129                 #         => [content-encoding, suffix, program]
 130                 'default' => ['x-gzip', 'gz', 'gzip']},
 131
 132         # Enable the pickaxe search, which will list the commits that modified
 133         # a given string in a file. This can be practical and quite faster
 134         # alternative to 'blame', but still potentially CPU-intensive.
 135
 136         # To enable system wide have in $GITWEB_CONFIG
 137         # $feature{'pickaxe'}{'default'} = [1];
 138         # To have project specific config enable override in $GITWEB_CONFIG
 139         # $feature{'pickaxe'}{'override'} = 1;
 140         # and in project config gitweb.pickaxe = 0|1;
 141         'pickaxe' => {
 142                 'sub' => \&feature_pickaxe,
 143                 'override' => 0,
 144                 'default' => [1]},
 145
 146         # Make gitweb use an alternative format of the URLs which can be
 147         # more readable and natural-looking: project name is embedded
 148         # directly in the path and the query string contains other
 149         # auxiliary information. All gitweb installations recognize
 150         # URL in either format; this configures in which formats gitweb
 151         # generates links.
 152
 153         # To enable system wide have in $GITWEB_CONFIG
 154         # $feature{'pathinfo'}{'default'} = [1];
 155         # Project specific override is not supported.
 156
 157         # Note that you will need to change the default location of CSS,
 158         # favicon, logo and possibly other files to an absolute URL. Also,
 159         # if gitweb.cgi serves as your indexfile, you will need to force
 160         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 161         'pathinfo' => {
 162                 'override' => 0,
 163                 'default' => [0]},
 164
 165         # Make gitweb consider projects in project root subdirectories
 166         # to be forks of existing projects. Given project $projname.git,
 167         # projects matching $projname/*.git will not be shown in the main
 168         # projects list, instead a '+' mark will be added to $projname
 169         # there and a 'forks' view will be enabled for the project, listing
 170         # all the forks. This feature is supported only if project list
 171         # is taken from a directory, not file.
 172
 173         # To enable system wide have in $GITWEB_CONFIG
 174         # $feature{'forks'}{'default'} = [1];
 175         # Project specific override is not supported.
 176         'forks' => {
 177                 'override' => 0,
 178                 'default' => [0]},
 179 );
 180
 181 sub gitweb_check_feature {
 182         my ($name) = @_;
 183         return unless exists $feature{$name};
 184         my ($sub, $override, @defaults) = (
 185                 $feature{$name}{'sub'},
 186                 $feature{$name}{'override'},
 187                 @{$feature{$name}{'default'}});
 188         if (!$override) { return @defaults; }
 189         if (!defined $sub) {
 190                 warn "feature $name is not overrideable";
 191                 return @defaults;
 192         }
 193         return $sub->(@defaults);
 194 }
 195
 196 sub feature_blame {
 197         my ($val) = git_get_project_config('blame', '--bool');
 198
 199         if ($val eq 'true') {
 200                 return 1;
 201         } elsif ($val eq 'false') {
 202                 return 0;
 203         }
 204
 205         return $_[0];
 206 }
 207
 208 sub feature_snapshot {
 209         my ($ctype, $suffix, $command) = @_;
 210
 211         my ($val) = git_get_project_config('snapshot');
 212
 213         if ($val eq 'gzip') {
 214                 return ('x-gzip', 'gz', 'gzip');
 215         } elsif ($val eq 'bzip2') {
 216                 return ('x-bzip2', 'bz2', 'bzip2');
 217         } elsif ($val eq 'none') {
 218                 return ();
 219         }
 220
 221         return ($ctype, $suffix, $command);
 222 }
 223
 224 sub gitweb_have_snapshot {
 225         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 226         my $have_snapshot = (defined $ctype && defined $suffix);
 227
 228         return $have_snapshot;
 229 }
 230
 231 sub feature_pickaxe {
 232         my ($val) = git_get_project_config('pickaxe', '--bool');
 233
 234         if ($val eq 'true') {
 235                 return (1);
 236         } elsif ($val eq 'false') {
 237                 return (0);
 238         }
 239
 240         return ($_[0]);
 241 }
 242
 243 # checking HEAD file with -e is fragile if the repository was
 244 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 245 # and then pruned.
 246 sub check_head_link {
 247         my ($dir) = @_;
 248         my $headfile = "$dir/HEAD";
 249         return ((-e $headfile) ||
 250                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 251 }
 252
 253 sub check_export_ok {
 254         my ($dir) = @_;
 255         return (check_head_link($dir) &&
 256                 (!$export_ok || -e "$dir/$export_ok"));
 257 }
 258
 259 # rename detection options for git-diff and git-diff-tree
 260 # - default is '-M', with the cost proportional to
 261 #   (number of removed files) * (number of new files).
 262 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 263 #   (number of changed files + number of removed files) * (number of new files)
 264 # - even more costly is '-C', '--find-copies-harder' with cost
 265 #   (number of files in the original tree) * (number of new files)
 266 # - one might want to include '-B' option, e.g. '-B', '-M'
 267 our @diff_opts = ('-M'); # taken from git_commit
 268
 269 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 270 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 271
 272 # version of the core git binary
 273 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 274
 275 $projects_list ||= $projectroot;
 276
 277 # ======================================================================
 278 # input validation and dispatch
 279 our $action = $cgi->param('a');
 280 if (defined $action) {
 281         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 282                 die_error(undef, "Invalid action parameter");
 283         }
 284 }
 285
 286 # parameters which are pathnames
 287 our $project = $cgi->param('p');
 288 if (defined $project) {
 289         if (!validate_pathname($project) ||
 290             !(-d "$projectroot/$project") ||
 291             !check_head_link("$projectroot/$project") ||
 292             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 293             ($strict_export && !project_in_list($project))) {
 294                 undef $project;
 295                 die_error(undef, "No such project");
 296         }
 297 }
 298
 299 our $file_name = $cgi->param('f');
 300 if (defined $file_name) {
 301         if (!validate_pathname($file_name)) {
 302                 die_error(undef, "Invalid file parameter");
 303         }
 304 }
 305
 306 our $file_parent = $cgi->param('fp');
 307 if (defined $file_parent) {
 308         if (!validate_pathname($file_parent)) {
 309                 die_error(undef, "Invalid file parent parameter");
 310         }
 311 }
 312
 313 # parameters which are refnames
 314 our $hash = $cgi->param('h');
 315 if (defined $hash) {
 316         if (!validate_refname($hash)) {
 317                 die_error(undef, "Invalid hash parameter");
 318         }
 319 }
 320
 321 our $hash_parent = $cgi->param('hp');
 322 if (defined $hash_parent) {
 323         if (!validate_refname($hash_parent)) {
 324                 die_error(undef, "Invalid hash parent parameter");
 325         }
 326 }
 327
 328 our $hash_base = $cgi->param('hb');
 329 if (defined $hash_base) {
 330         if (!validate_refname($hash_base)) {
 331                 die_error(undef, "Invalid hash base parameter");
 332         }
 333 }
 334
 335 our $hash_parent_base = $cgi->param('hpb');
 336 if (defined $hash_parent_base) {
 337         if (!validate_refname($hash_parent_base)) {
 338                 die_error(undef, "Invalid hash parent base parameter");
 339         }
 340 }
 341
 342 # other parameters
 343 our $page = $cgi->param('pg');
 344 if (defined $page) {
 345         if ($page =~ m/[^0-9]/) {
 346                 die_error(undef, "Invalid page parameter");
 347         }
 348 }
 349
 350 our $searchtext = $cgi->param('s');
 351 if (defined $searchtext) {
 352         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 353                 die_error(undef, "Invalid search parameter");
 354         }
 355         $searchtext = quotemeta $searchtext;
 356 }
 357
 358 our $searchtype = $cgi->param('st');
 359 if (defined $searchtype) {
 360         if ($searchtype =~ m/[^a-z]/) {
 361                 die_error(undef, "Invalid searchtype parameter");
 362         }
 363 }
 364
 365 # now read PATH_INFO and use it as alternative to parameters
 366 sub evaluate_path_info {
 367         return if defined $project;
 368         my $path_info = $ENV{"PATH_INFO"};
 369         return if !$path_info;
 370         $path_info =~ s,^/+,,;
 371         return if !$path_info;
 372         # find which part of PATH_INFO is project
 373         $project = $path_info;
 374         $project =~ s,/+$,,;
 375         while ($project && !check_head_link("$projectroot/$project")) {
 376                 $project =~ s,/*[^/]*$,,;
 377         }
 378         # validate project
 379         $project = validate_pathname($project);
 380         if (!$project ||
 381             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 382             ($strict_export && !project_in_list($project))) {
 383                 undef $project;
 384                 return;
 385         }
 386         # do not change any parameters if an action is given using the query string
 387         return if $action;
 388         $path_info =~ s,^$project/*,,;
 389         my ($refname, $pathname) = split(/:/, $path_info, 2);
 390         if (defined $pathname) {
 391                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 392                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 393                 $pathname =~ s,^/+,,;
 394                 if (!$pathname || substr($pathname, -1) eq "/") {
 395                         $action  ||= "tree";
 396                         $pathname =~ s,/$,,;
 397                 } else {
 398                         $action  ||= "blob_plain";
 399                 }
 400                 $hash_base ||= validate_refname($refname);
 401                 $file_name ||= validate_pathname($pathname);
 402         } elsif (defined $refname) {
 403                 # we got "project.git/branch"
 404                 $action ||= "shortlog";
 405                 $hash   ||= validate_refname($refname);
 406         }
 407 }
 408 evaluate_path_info();
 409
 410 # path to the current git repository
 411 our $git_dir;
 412 $git_dir = "$projectroot/$project" if $project;
 413
 414 # dispatch
 415 my %actions = (
 416         "blame" => \&git_blame2,
 417         "blobdiff" => \&git_blobdiff,
 418         "blobdiff_plain" => \&git_blobdiff_plain,
 419         "blob" => \&git_blob,
 420         "blob_plain" => \&git_blob_plain,
 421         "commitdiff" => \&git_commitdiff,
 422         "commitdiff_plain" => \&git_commitdiff_plain,
 423         "commit" => \&git_commit,
 424         "forks" => \&git_forks,
 425         "heads" => \&git_heads,
 426         "history" => \&git_history,
 427         "log" => \&git_log,
 428         "rss" => \&git_rss,
 429         "search" => \&git_search,
 430         "search_help" => \&git_search_help,
 431         "shortlog" => \&git_shortlog,
 432         "summary" => \&git_summary,
 433         "tag" => \&git_tag,
 434         "tags" => \&git_tags,
 435         "tree" => \&git_tree,
 436         "snapshot" => \&git_snapshot,
 437         # those below don't need $project
 438         "opml" => \&git_opml,
 439         "project_list" => \&git_project_list,
 440         "project_index" => \&git_project_index,
 441 );
 442
 443 if (defined $project) {
 444         $action ||= 'summary';
 445 } else {
 446         $action ||= 'project_list';
 447 }
 448 if (!defined($actions{$action})) {
 449         die_error(undef, "Unknown action");
 450 }
 451 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 452     !$project) {
 453         die_error(undef, "Project needed");
 454 }
 455 $actions{$action}->();
 456 exit;
 457
 458 ## ======================================================================
 459 ## action links
 460
 461 sub href(%) {
 462         my %params = @_;
 463         my $href = $my_uri;
 464
 465         # XXX: Warning: If you touch this, check the search form for updating,
 466         # too.
 467
 468         my @mapping = (
 469                 project => "p",
 470                 action => "a",
 471                 file_name => "f",
 472                 file_parent => "fp",
 473                 hash => "h",
 474                 hash_parent => "hp",
 475                 hash_base => "hb",
 476                 hash_parent_base => "hpb",
 477                 page => "pg",
 478                 order => "o",
 479                 searchtext => "s",
 480                 searchtype => "st",
 481         );
 482         my %mapping = @mapping;
 483
 484         $params{'project'} = $project unless exists $params{'project'};
 485
 486         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 487         if ($use_pathinfo) {
 488                 # use PATH_INFO for project name
 489                 $href .= "/$params{'project'}" if defined $params{'project'};
 490                 delete $params{'project'};
 491
 492                 # Summary just uses the project path URL
 493                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 494                         delete $params{'action'};
 495                 }
 496         }
 497
 498         # now encode the parameters explicitly
 499         my @result = ();
 500         for (my $i = 0; $i < @mapping; $i += 2) {
 501                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 502                 if (defined $params{$name}) {
 503                         push @result, $symbol . "=" . esc_param($params{$name});
 504                 }
 505         }
 506         $href .= "?" . join(';', @result) if scalar @result;
 507
 508         return $href;
 509 }
 510
 511
 512 ## ======================================================================
 513 ## validation, quoting/unquoting and escaping
 514
 515 sub validate_pathname {
 516         my $input = shift || return undef;
 517
 518         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 519         # at the beginning, at the end, and between slashes.
 520         # also this catches doubled slashes
 521         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 522                 return undef;
 523         }
 524         # no null characters
 525         if ($input =~ m!\0!) {
 526                 return undef;
 527         }
 528         return $input;
 529 }
 530
 531 sub validate_refname {
 532         my $input = shift || return undef;
 533
 534         # textual hashes are O.K.
 535         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 536                 return $input;
 537         }
 538         # it must be correct pathname
 539         $input = validate_pathname($input)
 540                 or return undef;
 541         # restrictions on ref name according to git-check-ref-format
 542         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 543                 return undef;
 544         }
 545         return $input;
 546 }
 547
 548 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 549 sub to_utf8 {
 550         my $str = shift;
 551         return decode("utf8", $str, Encode::FB_DEFAULT);
 552 }
 553
 554 # quote unsafe chars, but keep the slash, even when it's not
 555 # correct, but quoted slashes look too horrible in bookmarks
 556 sub esc_param {
 557         my $str = shift;
 558         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 559         $str =~ s/\+/%2B/g;
 560         $str =~ s/ /\+/g;
 561         return $str;
 562 }
 563
 564 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 565 sub esc_url {
 566         my $str = shift;
 567         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 568         $str =~ s/\+/%2B/g;
 569         $str =~ s/ /\+/g;
 570         return $str;
 571 }
 572
 573 # replace invalid utf8 character with SUBSTITUTION sequence
 574 sub esc_html ($;%) {
 575         my $str = shift;
 576         my %opts = @_;
 577
 578         $str = to_utf8($str);
 579         $str = escapeHTML($str);
 580         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 581         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 582         if ($opts{'-nbsp'}) {
 583                 $str =~ s/ /&nbsp;/g;
 584         }
 585         return $str;
 586 }
 587
 588 # git may return quoted and escaped filenames
 589 sub unquote {
 590         my $str = shift;
 591         if ($str =~ m/^"(.*)"$/) {
 592                 $str = $1;
 593                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 594         }
 595         return $str;
 596 }
 597
 598 # escape tabs (convert tabs to spaces)
 599 sub untabify {
 600         my $line = shift;
 601
 602         while ((my $pos = index($line, "\t")) != -1) {
 603                 if (my $count = (8 - ($pos % 8))) {
 604                         my $spaces = ' ' x $count;
 605                         $line =~ s/\t/$spaces/;
 606                 }
 607         }
 608
 609         return $line;
 610 }
 611
 612 sub project_in_list {
 613         my $project = shift;
 614         my @list = git_get_projects_list();
 615         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 616 }
 617
 618 ## ----------------------------------------------------------------------
 619 ## HTML aware string manipulation
 620
 621 sub chop_str {
 622         my $str = shift;
 623         my $len = shift;
 624         my $add_len = shift || 10;
 625
 626         # allow only $len chars, but don't cut a word if it would fit in $add_len
 627         # if it doesn't fit, cut it if it's still longer than the dots we would add
 628         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 629         my $body = $1;
 630         my $tail = $2;
 631         if (length($tail) > 4) {
 632                 $tail = " ...";
 633                 $body =~ s/&[^;]*$//; # remove chopped character entities
 634         }
 635         return "$body$tail";
 636 }
 637
 638 ## ----------------------------------------------------------------------
 639 ## functions returning short strings
 640
 641 # CSS class for given age value (in seconds)
 642 sub age_class {
 643         my $age = shift;
 644
 645         if ($age < 60*60*2) {
 646                 return "age0";
 647         } elsif ($age < 60*60*24*2) {
 648                 return "age1";
 649         } else {
 650                 return "age2";
 651         }
 652 }
 653
 654 # convert age in seconds to "nn units ago" string
 655 sub age_string {
 656         my $age = shift;
 657         my $age_str;
 658
 659         if ($age > 60*60*24*365*2) {
 660                 $age_str = (int $age/60/60/24/365);
 661                 $age_str .= " years ago";
 662         } elsif ($age > 60*60*24*(365/12)*2) {
 663                 $age_str = int $age/60/60/24/(365/12);
 664                 $age_str .= " months ago";
 665         } elsif ($age > 60*60*24*7*2) {
 666                 $age_str = int $age/60/60/24/7;
 667                 $age_str .= " weeks ago";
 668         } elsif ($age > 60*60*24*2) {
 669                 $age_str = int $age/60/60/24;
 670                 $age_str .= " days ago";
 671         } elsif ($age > 60*60*2) {
 672                 $age_str = int $age/60/60;
 673                 $age_str .= " hours ago";
 674         } elsif ($age > 60*2) {
 675                 $age_str = int $age/60;
 676                 $age_str .= " min ago";
 677         } elsif ($age > 2) {
 678                 $age_str = int $age;
 679                 $age_str .= " sec ago";
 680         } else {
 681                 $age_str .= " right now";
 682         }
 683         return $age_str;
 684 }
 685
 686 # convert file mode in octal to symbolic file mode string
 687 sub mode_str {
 688         my $mode = oct shift;
 689
 690         if (S_ISDIR($mode & S_IFMT)) {
 691                 return 'drwxr-xr-x';
 692         } elsif (S_ISLNK($mode)) {
 693                 return 'lrwxrwxrwx';
 694         } elsif (S_ISREG($mode)) {
 695                 # git cares only about the executable bit
 696                 if ($mode & S_IXUSR) {
 697                         return '-rwxr-xr-x';
 698                 } else {
 699                         return '-rw-r--r--';
 700                 };
 701         } else {
 702                 return '----------';
 703         }
 704 }
 705
 706 # convert file mode in octal to file type string
 707 sub file_type {
 708         my $mode = shift;
 709
 710         if ($mode !~ m/^[0-7]+$/) {
 711                 return $mode;
 712         } else {
 713                 $mode = oct $mode;
 714         }
 715
 716         if (S_ISDIR($mode & S_IFMT)) {
 717                 return "directory";
 718         } elsif (S_ISLNK($mode)) {
 719                 return "symlink";
 720         } elsif (S_ISREG($mode)) {
 721                 return "file";
 722         } else {
 723                 return "unknown";
 724         }
 725 }
 726
 727 ## ----------------------------------------------------------------------
 728 ## functions returning short HTML fragments, or transforming HTML fragments
 729 ## which don't beling to other sections
 730
 731 # format line of commit message or tag comment
 732 sub format_log_line_html {
 733         my $line = shift;
 734
 735         $line = esc_html($line);
 736         $line =~ s/ /&nbsp;/g;
 737         if ($line =~ m/([0-9a-fA-F]{40})/) {
 738                 my $hash_text = $1;
 739                 if (git_get_type($hash_text) eq "commit") {
 740                         my $link =
 741                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 742                                         -class => "text"}, $hash_text);
 743                         $line =~ s/$hash_text/$link/;
 744                 }
 745         }
 746         return $line;
 747 }
 748
 749 # format marker of refs pointing to given object
 750 sub format_ref_marker {
 751         my ($refs, $id) = @_;
 752         my $markers = '';
 753
 754         if (defined $refs->{$id}) {
 755                 foreach my $ref (@{$refs->{$id}}) {
 756                         my ($type, $name) = qw();
 757                         # e.g. tags/v2.6.11 or heads/next
 758                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 759                                 $type = $1;
 760                                 $name = $2;
 761                         } else {
 762                                 $type = "ref";
 763                                 $name = $ref;
 764                         }
 765
 766                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 767                 }
 768         }
 769
 770         if ($markers) {
 771                 return ' <span class="refs">'. $markers . '</span>';
 772         } else {
 773                 return "";
 774         }
 775 }
 776
 777 # format, perhaps shortened and with markers, title line
 778 sub format_subject_html {
 779         my ($long, $short, $href, $extra) = @_;
 780         $extra = '' unless defined($extra);
 781
 782         if (length($short) < length($long)) {
 783                 return $cgi->a({-href => $href, -class => "list subject",
 784                                 -title => to_utf8($long)},
 785                        esc_html($short) . $extra);
 786         } else {
 787                 return $cgi->a({-href => $href, -class => "list subject"},
 788                        esc_html($long)  . $extra);
 789         }
 790 }
 791
 792 sub format_diff_line {
 793         my $line = shift;
 794         my $char = substr($line, 0, 1);
 795         my $diff_class = "";
 796
 797         chomp $line;
 798
 799         if ($char eq '+') {
 800                 $diff_class = " add";
 801         } elsif ($char eq "-") {
 802                 $diff_class = " rem";
 803         } elsif ($char eq "@") {
 804                 $diff_class = " chunk_header";
 805         } elsif ($char eq "\\") {
 806                 $diff_class = " incomplete";
 807         }
 808         $line = untabify($line);
 809         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 810 }
 811
 812 ## ----------------------------------------------------------------------
 813 ## git utility subroutines, invoking git commands
 814
 815 # returns path to the core git executable and the --git-dir parameter as list
 816 sub git_cmd {
 817         return $GIT, '--git-dir='.$git_dir;
 818 }
 819
 820 # returns path to the core git executable and the --git-dir parameter as string
 821 sub git_cmd_str {
 822         return join(' ', git_cmd());
 823 }
 824
 825 # get HEAD ref of given project as hash
 826 sub git_get_head_hash {
 827         my $project = shift;
 828         my $o_git_dir = $git_dir;
 829         my $retval = undef;
 830         $git_dir = "$projectroot/$project";
 831         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 832                 my $head = <$fd>;
 833                 close $fd;
 834                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 835                         $retval = $1;
 836                 }
 837         }
 838         if (defined $o_git_dir) {
 839                 $git_dir = $o_git_dir;
 840         }
 841         return $retval;
 842 }
 843
 844 # get type of given object
 845 sub git_get_type {
 846         my $hash = shift;
 847
 848         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 849         my $type = <$fd>;
 850         close $fd or return;
 851         chomp $type;
 852         return $type;
 853 }
 854
 855 sub git_get_project_config {
 856         my ($key, $type) = @_;
 857
 858         return unless ($key);
 859         $key =~ s/^gitweb\.//;
 860         return if ($key =~ m/\W/);
 861
 862         my @x = (git_cmd(), 'repo-config');
 863         if (defined $type) { push @x, $type; }
 864         push @x, "--get";
 865         push @x, "gitweb.$key";
 866         my $val = qx(@x);
 867         chomp $val;
 868         return ($val);
 869 }
 870
 871 # get hash of given path at given ref
 872 sub git_get_hash_by_path {
 873         my $base = shift;
 874         my $path = shift || return undef;
 875         my $type = shift;
 876
 877         $path =~ s,/+$,,;
 878
 879         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 880                 or die_error(undef, "Open git-ls-tree failed");
 881         my $line = <$fd>;
 882         close $fd or return undef;
 883
 884         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 885         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
 886         if (defined $type && $type ne $2) {
 887                 # type doesn't match
 888                 return undef;
 889         }
 890         return $3;
 891 }
 892
 893 ## ......................................................................
 894 ## git utility functions, directly accessing git repository
 895
 896 sub git_get_project_description {
 897         my $path = shift;
 898
 899         open my $fd, "$projectroot/$path/description" or return undef;
 900         my $descr = <$fd>;
 901         close $fd;
 902         chomp $descr;
 903         return $descr;
 904 }
 905
 906 sub git_get_project_url_list {
 907         my $path = shift;
 908
 909         open my $fd, "$projectroot/$path/cloneurl" or return;
 910         my @git_project_url_list = map { chomp; $_ } <$fd>;
 911         close $fd;
 912
 913         return wantarray ? @git_project_url_list : \@git_project_url_list;
 914 }
 915
 916 sub git_get_projects_list {
 917         my ($filter) = @_;
 918         my @list;
 919
 920         $filter ||= '';
 921         $filter =~ s/\.git$//;
 922
 923         if (-d $projects_list) {
 924                 # search in directory
 925                 my $dir = $projects_list . ($filter ? "/$filter" : '');
 926                 # remove the trailing "/"
 927                 $dir =~ s!/+$!!;
 928                 my $pfxlen = length("$dir");
 929
 930                 my ($check_forks) = gitweb_check_feature('forks');
 931
 932                 File::Find::find({
 933                         follow_fast => 1, # follow symbolic links
 934                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 935                         wanted => sub {
 936                                 # skip project-list toplevel, if we get it.
 937                                 return if (m!^[/.]$!);
 938                                 # only directories can be git repositories
 939                                 return unless (-d $_);
 940
 941                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 942                                 # we check related file in $projectroot
 943                                 if ($check_forks and $subdir =~ m#/.#) {
 944                                         $File::Find::prune = 1;
 945                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
 946                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
 947                                         $File::Find::prune = 1;
 948                                 }
 949                         },
 950                 }, "$dir");
 951
 952         } elsif (-f $projects_list) {
 953                 # read from file(url-encoded):
 954                 # 'git%2Fgit.git Linus+Torvalds'
 955                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 956                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 957                 open my ($fd), $projects_list or return;
 958                 while (my $line = <$fd>) {
 959                         chomp $line;
 960                         my ($path, $owner) = split ' ', $line;
 961                         $path = unescape($path);
 962                         $owner = unescape($owner);
 963                         if (!defined $path) {
 964                                 next;
 965                         }
 966                         if ($filter ne '') {
 967                                 # looking for forks;
 968                                 my $pfx = substr($path, 0, length($filter));
 969                                 if ($pfx ne $filter) {
 970                                         next;
 971                                 }
 972                                 my $sfx = substr($path, length($filter));
 973                                 if ($sfx !~ /^\/.*\.git$/) {
 974                                         next;
 975                                 }
 976                         }
 977                         if (check_export_ok("$projectroot/$path")) {
 978                                 my $pr = {
 979                                         path => $path,
 980                                         owner => to_utf8($owner),
 981                                 };
 982                                 push @list, $pr
 983                         }
 984                 }
 985                 close $fd;
 986         }
 987         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 988         return @list;
 989 }
 990
 991 sub git_get_project_owner {
 992         my $project = shift;
 993         my $owner;
 994
 995         return undef unless $project;
 996
 997         # read from file (url-encoded):
 998         # 'git%2Fgit.git Linus+Torvalds'
 999         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1000         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1001         if (-f $projects_list) {
1002                 open (my $fd , $projects_list);
1003                 while (my $line = <$fd>) {
1004                         chomp $line;
1005                         my ($pr, $ow) = split ' ', $line;
1006                         $pr = unescape($pr);
1007                         $ow = unescape($ow);
1008                         if ($pr eq $project) {
1009                                 $owner = to_utf8($ow);
1010                                 last;
1011                         }
1012                 }
1013                 close $fd;
1014         }
1015         if (!defined $owner) {
1016                 $owner = get_file_owner("$projectroot/$project");
1017         }
1018
1019         return $owner;
1020 }
1021
1022 sub git_get_last_activity {
1023         my ($path) = @_;
1024         my $fd;
1025
1026         $git_dir = "$projectroot/$path";
1027         open($fd, "-|", git_cmd(), 'for-each-ref',
1028              '--format=%(refname) %(committer)',
1029              '--sort=-committerdate',
1030              'refs/heads') or return;
1031         my $most_recent = <$fd>;
1032         close $fd or return;
1033         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1034                 my $timestamp = $1;
1035                 my $age = time - $timestamp;
1036                 return ($age, age_string($age));
1037         }
1038 }
1039
1040 sub git_get_references {
1041         my $type = shift || "";
1042         my %refs;
1043         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
1044         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
1045         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1046                 or return;
1047
1048         while (my $line = <$fd>) {
1049                 chomp $line;
1050                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
1051                         if (defined $refs{$1}) {
1052                                 push @{$refs{$1}}, $2;
1053                         } else {
1054                                 $refs{$1} = [ $2 ];
1055                         }
1056                 }
1057         }
1058         close $fd or return;
1059         return \%refs;
1060 }
1061
1062 sub git_get_rev_name_tags {
1063         my $hash = shift || return undef;
1064
1065         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1066                 or return;
1067         my $name_rev = <$fd>;
1068         close $fd;
1069
1070         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1071                 return $1;
1072         } else {
1073                 # catches also '$hash undefined' output
1074                 return undef;
1075         }
1076 }
1077
1078 ## ----------------------------------------------------------------------
1079 ## parse to hash functions
1080
1081 sub parse_date {
1082         my $epoch = shift;
1083         my $tz = shift || "-0000";
1084
1085         my %date;
1086         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1087         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1088         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1089         $date{'hour'} = $hour;
1090         $date{'minute'} = $min;
1091         $date{'mday'} = $mday;
1092         $date{'day'} = $days[$wday];
1093         $date{'month'} = $months[$mon];
1094         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1095                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1096         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1097                              $mday, $months[$mon], $hour ,$min;
1098
1099         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1100         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1101         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1102         $date{'hour_local'} = $hour;
1103         $date{'minute_local'} = $min;
1104         $date{'tz_local'} = $tz;
1105         $date{'iso-tz'} = sprintf ("%04d-%02d-%02d %02d:%02d:%02d %s",
1106                                    1900+$year, $mon+1, $mday,
1107                                    $hour, $min, $sec, $tz);
1108         return %date;
1109 }
1110
1111 sub parse_tag {
1112         my $tag_id = shift;
1113         my %tag;
1114         my @comment;
1115
1116         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1117         $tag{'id'} = $tag_id;
1118         while (my $line = <$fd>) {
1119                 chomp $line;
1120                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1121                         $tag{'object'} = $1;
1122                 } elsif ($line =~ m/^type (.+)$/) {
1123                         $tag{'type'} = $1;
1124                 } elsif ($line =~ m/^tag (.+)$/) {
1125                         $tag{'name'} = $1;
1126                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1127                         $tag{'author'} = $1;
1128                         $tag{'epoch'} = $2;
1129                         $tag{'tz'} = $3;
1130                 } elsif ($line =~ m/--BEGIN/) {
1131                         push @comment, $line;
1132                         last;
1133                 } elsif ($line eq "") {
1134                         last;
1135                 }
1136         }
1137         push @comment, <$fd>;
1138         $tag{'comment'} = \@comment;
1139         close $fd or return;
1140         if (!defined $tag{'name'}) {
1141                 return
1142         };
1143         return %tag
1144 }
1145
1146 sub parse_commit {
1147         my $commit_id = shift;
1148         my $commit_text = shift;
1149
1150         my @commit_lines;
1151         my %co;
1152
1153         if (defined $commit_text) {
1154                 @commit_lines = @$commit_text;
1155         } else {
1156                 local $/ = "\0";
1157                 open my $fd, "-|", git_cmd(), "rev-list",
1158                         "--header", "--parents", "--max-count=1",
1159                         $commit_id, "--"
1160                         or return;
1161                 @commit_lines = split '\n', <$fd>;
1162                 close $fd or return;
1163                 pop @commit_lines;
1164         }
1165         my $header = shift @commit_lines;
1166         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1167                 return;
1168         }
1169         ($co{'id'}, my @parents) = split ' ', $header;
1170         $co{'parents'} = \@parents;
1171         $co{'parent'} = $parents[0];
1172         while (my $line = shift @commit_lines) {
1173                 last if $line eq "\n";
1174                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1175                         $co{'tree'} = $1;
1176                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1177                         $co{'author'} = $1;
1178                         $co{'author_epoch'} = $2;
1179                         $co{'author_tz'} = $3;
1180                         if ($co{'author'} =~ m/^([^<]+) </) {
1181                                 $co{'author_name'} = $1;
1182                         } else {
1183                                 $co{'author_name'} = $co{'author'};
1184                         }
1185                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1186                         $co{'committer'} = $1;
1187                         $co{'committer_epoch'} = $2;
1188                         $co{'committer_tz'} = $3;
1189                         $co{'committer_name'} = $co{'committer'};
1190                         $co{'committer_name'} =~ s/ <.*//;
1191                 }
1192         }
1193         if (!defined $co{'tree'}) {
1194                 return;
1195         };
1196
1197         foreach my $title (@commit_lines) {
1198                 $title =~ s/^    //;
1199                 if ($title ne "") {
1200                         $co{'title'} = chop_str($title, 80, 5);
1201                         # remove leading stuff of merges to make the interesting part visible
1202                         if (length($title) > 50) {
1203                                 $title =~ s/^Automatic //;
1204                                 $title =~ s/^merge (of|with) /Merge ... /i;
1205                                 if (length($title) > 50) {
1206                                         $title =~ s/(http|rsync):\/\///;
1207                                 }
1208                                 if (length($title) > 50) {
1209                                         $title =~ s/(master|www|rsync)\.//;
1210                                 }
1211                                 if (length($title) > 50) {
1212                                         $title =~ s/kernel.org:?//;
1213                                 }
1214                                 if (length($title) > 50) {
1215                                         $title =~ s/\/pub\/scm//;
1216                                 }
1217                         }
1218                         $co{'title_short'} = chop_str($title, 50, 5);
1219                         last;
1220                 }
1221         }
1222         if ($co{'title'} eq "") {
1223                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1224         }
1225         # remove added spaces
1226         foreach my $line (@commit_lines) {
1227                 $line =~ s/^    //;
1228         }
1229         $co{'comment'} = \@commit_lines;
1230
1231         my $age = time - $co{'committer_epoch'};
1232         $co{'age'} = $age;
1233         $co{'age_string'} = age_string($age);
1234         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1235         if ($age > 60*60*24*7*2) {
1236                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1237                 $co{'age_string_age'} = $co{'age_string'};
1238         } else {
1239                 $co{'age_string_date'} = $co{'age_string'};
1240                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1241         }
1242         return %co;
1243 }
1244
1245 # parse ref from ref_file, given by ref_id, with given type
1246 sub parse_ref {
1247         my $ref_file = shift;
1248         my $ref_id = shift;
1249         my $type = shift || git_get_type($ref_id);
1250         my %ref_item;
1251
1252         $ref_item{'type'} = $type;
1253         $ref_item{'id'} = $ref_id;
1254         $ref_item{'epoch'} = 0;
1255         $ref_item{'age'} = "unknown";
1256         if ($type eq "tag") {
1257                 my %tag = parse_tag($ref_id);
1258                 $ref_item{'comment'} = $tag{'comment'};
1259                 if ($tag{'type'} eq "commit") {
1260                         my %co = parse_commit($tag{'object'});
1261                         $ref_item{'epoch'} = $co{'committer_epoch'};
1262                         $ref_item{'age'} = $co{'age_string'};
1263                 } elsif (defined($tag{'epoch'})) {
1264                         my $age = time - $tag{'epoch'};
1265                         $ref_item{'epoch'} = $tag{'epoch'};
1266                         $ref_item{'age'} = age_string($age);
1267                 }
1268                 $ref_item{'reftype'} = $tag{'type'};
1269                 $ref_item{'name'} = $tag{'name'};
1270                 $ref_item{'refid'} = $tag{'object'};
1271         } elsif ($type eq "commit"){
1272                 my %co = parse_commit($ref_id);
1273                 $ref_item{'reftype'} = "commit";
1274                 $ref_item{'name'} = $ref_file;
1275                 $ref_item{'title'} = $co{'title'};
1276                 $ref_item{'refid'} = $ref_id;
1277                 $ref_item{'epoch'} = $co{'committer_epoch'};
1278                 $ref_item{'age'} = $co{'age_string'};
1279         } else {
1280                 $ref_item{'reftype'} = $type;
1281                 $ref_item{'name'} = $ref_file;
1282                 $ref_item{'refid'} = $ref_id;
1283         }
1284
1285         return %ref_item;
1286 }
1287
1288 # parse line of git-diff-tree "raw" output
1289 sub parse_difftree_raw_line {
1290         my $line = shift;
1291         my %res;
1292
1293         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1294         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1295         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1296                 $res{'from_mode'} = $1;
1297                 $res{'to_mode'} = $2;
1298                 $res{'from_id'} = $3;
1299                 $res{'to_id'} = $4;
1300                 $res{'status'} = $5;
1301                 $res{'similarity'} = $6;
1302                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1303                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1304                 } else {
1305                         $res{'file'} = unquote($7);
1306                 }
1307         }
1308         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1309         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1310                 $res{'commit'} = $1;
1311         }
1312
1313         return wantarray ? %res : \%res;
1314 }
1315
1316 # parse line of git-ls-tree output
1317 sub parse_ls_tree_line ($;%) {
1318         my $line = shift;
1319         my %opts = @_;
1320         my %res;
1321
1322         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1323         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1324
1325         $res{'mode'} = $1;
1326         $res{'type'} = $2;
1327         $res{'hash'} = $3;
1328         if ($opts{'-z'}) {
1329                 $res{'name'} = $4;
1330         } else {
1331                 $res{'name'} = unquote($4);
1332         }
1333
1334         return wantarray ? %res : \%res;
1335 }
1336
1337 ## ......................................................................
1338 ## parse to array of hashes functions
1339
1340 sub git_get_heads_list {
1341         my $limit = shift;
1342         my @headslist;
1343
1344         open my $fd, '-|', git_cmd(), 'for-each-ref',
1345                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1346                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1347                 'refs/heads'
1348                 or return;
1349         while (my $line = <$fd>) {
1350                 my %ref_item;
1351
1352                 chomp $line;
1353                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1354                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1355                 my ($committer, $epoch, $tz) =
1356                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1357                 $name =~ s!^refs/heads/!!;
1358
1359                 $ref_item{'name'}  = $name;
1360                 $ref_item{'id'}    = $hash;
1361                 $ref_item{'title'} = $title || '(no commit message)';
1362                 $ref_item{'epoch'} = $epoch;
1363                 if ($epoch) {
1364                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1365                 } else {
1366                         $ref_item{'age'} = "unknown";
1367                 }
1368
1369                 push @headslist, \%ref_item;
1370         }
1371         close $fd;
1372
1373         return wantarray ? @headslist : \@headslist;
1374 }
1375
1376 sub git_get_tags_list {
1377         my $limit = shift;
1378         my @tagslist;
1379
1380         open my $fd, '-|', git_cmd(), 'for-each-ref',
1381                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1382                 '--format=%(objectname) %(objecttype) %(refname) '.
1383                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1384                 'refs/tags'
1385                 or return;
1386         while (my $line = <$fd>) {
1387                 my %ref_item;
1388
1389                 chomp $line;
1390                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1391                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1392                 my ($creator, $epoch, $tz) =
1393                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1394                 $name =~ s!^refs/tags/!!;
1395
1396                 $ref_item{'type'} = $type;
1397                 $ref_item{'id'} = $id;
1398                 $ref_item{'name'} = $name;
1399                 if ($type eq "tag") {
1400                         $ref_item{'subject'} = $title;
1401                         $ref_item{'reftype'} = $reftype;
1402                         $ref_item{'refid'}   = $refid;
1403                 } else {
1404                         $ref_item{'reftype'} = $type;
1405                         $ref_item{'refid'}   = $id;
1406                 }
1407
1408                 if ($type eq "tag" || $type eq "commit") {
1409                         $ref_item{'epoch'} = $epoch;
1410                         if ($epoch) {
1411                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1412                         } else {
1413                                 $ref_item{'age'} = "unknown";
1414                         }
1415                 }
1416
1417                 push @tagslist, \%ref_item;
1418         }
1419         close $fd;
1420
1421         return wantarray ? @tagslist : \@tagslist;
1422 }
1423
1424 ## ----------------------------------------------------------------------
1425 ## filesystem-related functions
1426
1427 sub get_file_owner {
1428         my $path = shift;
1429
1430         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1431         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1432         if (!defined $gcos) {
1433                 return undef;
1434         }
1435         my $owner = $gcos;
1436         $owner =~ s/[,;].*$//;
1437         return to_utf8($owner);
1438 }
1439
1440 ## ......................................................................
1441 ## mimetype related functions
1442
1443 sub mimetype_guess_file {
1444         my $filename = shift;
1445         my $mimemap = shift;
1446         -r $mimemap or return undef;
1447
1448         my %mimemap;
1449         open(MIME, $mimemap) or return undef;
1450         while (<MIME>) {
1451                 next if m/^#/; # skip comments
1452                 my ($mime, $exts) = split(/\t+/);
1453                 if (defined $exts) {
1454                         my @exts = split(/\s+/, $exts);
1455                         foreach my $ext (@exts) {
1456                                 $mimemap{$ext} = $mime;
1457                         }
1458                 }
1459         }
1460         close(MIME);
1461
1462         $filename =~ /\.([^.]*)$/;
1463         return $mimemap{$1};
1464 }
1465
1466 sub mimetype_guess {
1467         my $filename = shift;
1468         my $mime;
1469         $filename =~ /\./ or return undef;
1470
1471         if ($mimetypes_file) {
1472                 my $file = $mimetypes_file;
1473                 if ($file !~ m!^/!) { # if it is relative path
1474                         # it is relative to project
1475                         $file = "$projectroot/$project/$file";
1476                 }
1477                 $mime = mimetype_guess_file($filename, $file);
1478         }
1479         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1480         return $mime;
1481 }
1482
1483 sub blob_mimetype {
1484         my $fd = shift;
1485         my $filename = shift;
1486
1487         if ($filename) {
1488                 my $mime = mimetype_guess($filename);
1489                 $mime and return $mime;
1490         }
1491
1492         # just in case
1493         return $default_blob_plain_mimetype unless $fd;
1494
1495         if (-T $fd) {
1496                 return 'text/plain' .
1497                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1498         } elsif (! $filename) {
1499                 return 'application/octet-stream';
1500         } elsif ($filename =~ m/\.png$/i) {
1501                 return 'image/png';
1502         } elsif ($filename =~ m/\.gif$/i) {
1503                 return 'image/gif';
1504         } elsif ($filename =~ m/\.jpe?g$/i) {
1505                 return 'image/jpeg';
1506         } else {
1507                 return 'application/octet-stream';
1508         }
1509 }
1510
1511 ## ======================================================================
1512 ## functions printing HTML: header, footer, error page
1513
1514 sub git_header_html {
1515         my $status = shift || "200 OK";
1516         my $expires = shift;
1517
1518         my $title = "$site_name";
1519         if (defined $project) {
1520                 $title .= " - $project";
1521                 if (defined $action) {
1522                         $title .= "/$action";
1523                         if (defined $file_name) {
1524                                 $title .= " - " . esc_html($file_name);
1525                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1526                                         $title .= "/";
1527                                 }
1528                         }
1529                 }
1530         }
1531         my $content_type;
1532         # require explicit support from the UA if we are to send the page as
1533         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1534         # we have to do this because MSIE sometimes globs '*/*', pretending to
1535         # support xhtml+xml but choking when it gets what it asked for.
1536         if (defined $cgi->http('HTTP_ACCEPT') &&
1537             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1538             $cgi->Accept('application/xhtml+xml') != 0) {
1539                 $content_type = 'application/xhtml+xml';
1540         } else {
1541                 $content_type = 'text/html';
1542         }
1543         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1544                            -status=> $status, -expires => $expires);
1545         print <<EOF;
1546 <?xml version="1.0" encoding="utf-8"?>
1547 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1548 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1549 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1550 <!-- git core binaries version $git_version -->
1551 <head>
1552 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1553 <meta name="generator" content="gitweb/$version git/$git_version"/>
1554 <meta name="robots" content="index, nofollow"/>
1555 <title>$title</title>
1556 EOF
1557 # print out each stylesheet that exist
1558         if (defined $stylesheet) {
1559 #provides backwards capability for those people who define style sheet in a config file
1560                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1561         } else {
1562                 foreach my $stylesheet (@stylesheets) {
1563                         next unless $stylesheet;
1564                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1565                 }
1566         }
1567         if (defined $project) {
1568                 printf('<link rel="alternate" title="%s log" '.
1569                        'href="%s" type="application/rss+xml"/>'."\n",
1570                        esc_param($project), href(action=>"rss"));
1571         } else {
1572                 printf('<link rel="alternate" title="%s projects list" '.
1573                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1574                        $site_name, href(project=>undef, action=>"project_index"));
1575                 printf('<link rel="alternate" title="%s projects logs" '.
1576                        'href="%s" type="text/x-opml"/>'."\n",
1577                        $site_name, href(project=>undef, action=>"opml"));
1578         }
1579         if (defined $favicon) {
1580                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1581         }
1582
1583         print "</head>\n" .
1584               "<body>\n";
1585
1586         if (-f $site_header) {
1587                 open (my $fd, $site_header);
1588                 print <$fd>;
1589                 close $fd;
1590         }
1591
1592         print "<div class=\"page_header\">\n" .
1593               $cgi->a({-href => esc_url($logo_url),
1594                        -title => $logo_label},
1595                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1596         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1597         if (defined $project) {
1598                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1599                 if (defined $action) {
1600                         print " / $action";
1601                 }
1602                 print "\n";
1603                 if (!defined $searchtext) {
1604                         $searchtext = "";
1605                 }
1606                 my $search_hash;
1607                 if (defined $hash_base) {
1608                         $search_hash = $hash_base;
1609                 } elsif (defined $hash) {
1610                         $search_hash = $hash;
1611                 } else {
1612                         $search_hash = "HEAD";
1613                 }
1614                 $cgi->param("a", "search");
1615                 $cgi->param("h", $search_hash);
1616                 $cgi->param("p", $project);
1617                 print $cgi->startform(-method => "get", -action => $my_uri) .
1618                       "<div class=\"search\">\n" .
1619                       $cgi->hidden(-name => "p") . "\n" .
1620                       $cgi->hidden(-name => "a") . "\n" .
1621                       $cgi->hidden(-name => "h") . "\n" .
1622                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1623                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1624                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1625                       " search:\n",
1626                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1627                       "</div>" .
1628                       $cgi->end_form() . "\n";
1629         }
1630         print "</div>\n";
1631 }
1632
1633 sub git_footer_html {
1634         print "<div class=\"page_footer\">\n";
1635         if (defined $project) {
1636                 my $descr = git_get_project_description($project);
1637                 if (defined $descr) {
1638                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1639                 }
1640                 print $cgi->a({-href => href(action=>"rss"),
1641                               -class => "rss_logo"}, "RSS") . "\n";
1642         } else {
1643                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1644                               -class => "rss_logo"}, "OPML") . " ";
1645                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1646                               -class => "rss_logo"}, "TXT") . "\n";
1647         }
1648         print "</div>\n" ;
1649
1650         if (-f $site_footer) {
1651                 open (my $fd, $site_footer);
1652                 print <$fd>;
1653                 close $fd;
1654         }
1655
1656         print "</body>\n" .
1657               "</html>";
1658 }
1659
1660 sub die_error {
1661         my $status = shift || "403 Forbidden";
1662         my $error = shift || "Malformed query, file missing or permission denied";
1663
1664         git_header_html($status);
1665         print <<EOF;
1666 <div class="page_body">
1667 <br /><br />
1668 $status - $error
1669 <br />
1670 </div>
1671 EOF
1672         git_footer_html();
1673         exit;
1674 }
1675
1676 ## ----------------------------------------------------------------------
1677 ## functions printing or outputting HTML: navigation
1678
1679 sub git_print_page_nav {
1680         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1681         $extra = '' if !defined $extra; # pager or formats
1682
1683         my @navs = qw(summary shortlog log commit commitdiff tree);
1684         if ($suppress) {
1685                 @navs = grep { $_ ne $suppress } @navs;
1686         }
1687
1688         my %arg = map { $_ => {action=>$_} } @navs;
1689         if (defined $head) {
1690                 for (qw(commit commitdiff)) {
1691                         $arg{$_}{hash} = $head;
1692                 }
1693                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1694                         for (qw(shortlog log)) {
1695                                 $arg{$_}{hash} = $head;
1696                         }
1697                 }
1698         }
1699         $arg{tree}{hash} = $treehead if defined $treehead;
1700         $arg{tree}{hash_base} = $treebase if defined $treebase;
1701
1702         print "<div class=\"page_nav\">\n" .
1703                 (join " | ",
1704                  map { $_ eq $current ?
1705                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1706                  } @navs);
1707         print "<br/>\n$extra<br/>\n" .
1708               "</div>\n";
1709 }
1710
1711 sub format_paging_nav {
1712         my ($action, $hash, $head, $page, $nrevs) = @_;
1713         my $paging_nav;
1714
1715
1716         if ($hash ne $head || $page) {
1717                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1718         } else {
1719                 $paging_nav .= "HEAD";
1720         }
1721
1722         if ($page > 0) {
1723                 $paging_nav .= " &sdot; " .
1724                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1725                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1726         } else {
1727                 $paging_nav .= " &sdot; prev";
1728         }
1729
1730         if ($nrevs >= (100 * ($page+1)-1)) {
1731                 $paging_nav .= " &sdot; " .
1732                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1733                                  -accesskey => "n", -title => "Alt-n"}, "next");
1734         } else {
1735                 $paging_nav .= " &sdot; next";
1736         }
1737
1738         return $paging_nav;
1739 }
1740
1741 ## ......................................................................
1742 ## functions printing or outputting HTML: div
1743
1744 sub git_print_header_div {
1745         my ($action, $title, $hash, $hash_base) = @_;
1746         my %args = ();
1747
1748         $args{action} = $action;
1749         $args{hash} = $hash if $hash;
1750         $args{hash_base} = $hash_base if $hash_base;
1751
1752         print "<div class=\"header\">\n" .
1753               $cgi->a({-href => href(%args), -class => "title"},
1754               $title ? $title : $action) .
1755               "\n</div>\n";
1756 }
1757
1758 #sub git_print_authorship (\%) {
1759 sub git_print_authorship {
1760         my $co = shift;
1761
1762         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1763         print "<div class=\"author_date\">" .
1764               esc_html($co->{'author_name'}) .
1765               " [$ad{'rfc2822'}";
1766         if ($ad{'hour_local'} < 6) {
1767                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1768                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1769         } else {
1770                 printf(" (%02d:%02d %s)",
1771                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1772         }
1773         print "]</div>\n";
1774 }
1775
1776 sub git_print_page_path {
1777         my $name = shift;
1778         my $type = shift;
1779         my $hb = shift;
1780
1781
1782         print "<div class=\"page_path\">";
1783         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1784                       -title => 'tree root'}, "[$project]");
1785         print " / ";
1786         if (defined $name) {
1787                 my @dirname = split '/', $name;
1788                 my $basename = pop @dirname;
1789                 my $fullname = '';
1790
1791                 foreach my $dir (@dirname) {
1792                         $fullname .= ($fullname ? '/' : '') . $dir;
1793                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1794                                                      hash_base=>$hb),
1795                                       -title => $fullname}, esc_html($dir));
1796                         print " / ";
1797                 }
1798                 if (defined $type && $type eq 'blob') {
1799                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1800                                                      hash_base=>$hb),
1801                                       -title => $name}, esc_html($basename));
1802                 } elsif (defined $type && $type eq 'tree') {
1803                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1804                                                      hash_base=>$hb),
1805                                       -title => $name}, esc_html($basename));
1806                         print " / ";
1807                 } else {
1808                         print esc_html($basename);
1809                 }
1810         }
1811         print "<br/></div>\n";
1812 }
1813
1814 # sub git_print_log (\@;%) {
1815 sub git_print_log ($;%) {
1816         my $log = shift;
1817         my %opts = @_;
1818
1819         if ($opts{'-remove_title'}) {
1820                 # remove title, i.e. first line of log
1821                 shift @$log;
1822         }
1823         # remove leading empty lines
1824         while (defined $log->[0] && $log->[0] eq "") {
1825                 shift @$log;
1826         }
1827
1828         # print log
1829         my $signoff = 0;
1830         my $empty = 0;
1831         foreach my $line (@$log) {
1832                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1833                         $signoff = 1;
1834                         $empty = 0;
1835                         if (! $opts{'-remove_signoff'}) {
1836                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1837                                 next;
1838                         } else {
1839                                 # remove signoff lines
1840                                 next;
1841                         }
1842                 } else {
1843                         $signoff = 0;
1844                 }
1845
1846                 # print only one empty line
1847                 # do not print empty line after signoff
1848                 if ($line eq "") {
1849                         next if ($empty || $signoff);
1850                         $empty = 1;
1851                 } else {
1852                         $empty = 0;
1853                 }
1854
1855                 print format_log_line_html($line) . "<br/>\n";
1856         }
1857
1858         if ($opts{'-final_empty_line'}) {
1859                 # end with single empty line
1860                 print "<br/>\n" unless $empty;
1861         }
1862 }
1863
1864 # print tree entry (row of git_tree), but without encompassing <tr> element
1865 sub git_print_tree_entry {
1866         my ($t, $basedir, $hash_base, $have_blame) = @_;
1867
1868         my %base_key = ();
1869         $base_key{hash_base} = $hash_base if defined $hash_base;
1870
1871         # The format of a table row is: mode list link.  Where mode is
1872         # the mode of the entry, list is the name of the entry, an href,
1873         # and link is the action links of the entry.
1874
1875         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1876         if ($t->{'type'} eq "blob") {
1877                 print "<td class=\"list\">" .
1878                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1879                                                file_name=>"$basedir$t->{'name'}", %base_key),
1880                                 -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1881                 print "<td class=\"link\">";
1882                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1883                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1884                               "blob");
1885                 if ($have_blame) {
1886                         print " | " .
1887                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1888                                                            file_name=>"$basedir$t->{'name'}", %base_key)},
1889                                             "blame");
1890                 }
1891                 if (defined $hash_base) {
1892                         print " | " .
1893                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1894                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1895                                       "history");
1896                 }
1897                 print " | " .
1898                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1899                                                file_name=>"$basedir$t->{'name'}")},
1900                                 "raw");
1901                 print "</td>\n";
1902
1903         } elsif ($t->{'type'} eq "tree") {
1904                 print "<td class=\"list\">";
1905                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1906                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1907                               esc_html($t->{'name'}));
1908                 print "</td>\n";
1909                 print "<td class=\"link\">";
1910                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1911                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1912                               "tree");
1913                 if (defined $hash_base) {
1914                         print " | " .
1915                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1916                                                      file_name=>"$basedir$t->{'name'}")},
1917                                       "history");
1918                 }
1919                 print "</td>\n";
1920         }
1921 }
1922
1923 ## ......................................................................
1924 ## functions printing large fragments of HTML
1925
1926 sub git_difftree_body {
1927         my ($difftree, $hash, $parent) = @_;
1928
1929         print "<div class=\"list_head\">\n";
1930         if ($#{$difftree} > 10) {
1931                 print(($#{$difftree} + 1) . " files changed:\n");
1932         }
1933         print "</div>\n";
1934
1935         print "<table class=\"diff_tree\">\n";
1936         my $alternate = 1;
1937         my $patchno = 0;
1938         foreach my $line (@{$difftree}) {
1939                 my %diff = parse_difftree_raw_line($line);
1940
1941                 if ($alternate) {
1942                         print "<tr class=\"dark\">\n";
1943                 } else {
1944                         print "<tr class=\"light\">\n";
1945                 }
1946                 $alternate ^= 1;
1947
1948                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1949                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1950                 if ($diff{'to_mode'} ne ('0' x 6)) {
1951                         $to_mode_oct = oct $diff{'to_mode'};
1952                         if (S_ISREG($to_mode_oct)) { # only for regular file
1953                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1954                         }
1955                         $to_file_type = file_type($diff{'to_mode'});
1956                 }
1957                 if ($diff{'from_mode'} ne ('0' x 6)) {
1958                         $from_mode_oct = oct $diff{'from_mode'};
1959                         if (S_ISREG($to_mode_oct)) { # only for regular file
1960                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1961                         }
1962                         $from_file_type = file_type($diff{'from_mode'});
1963                 }
1964
1965                 if ($diff{'status'} eq "A") { # created
1966                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1967                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1968                         $mode_chng   .= "]</span>";
1969                         print "<td>";
1970                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1971                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1972                                       -class => "list"}, esc_html($diff{'file'}));
1973                         print "</td>\n";
1974                         print "<td>$mode_chng</td>\n";
1975                         print "<td class=\"link\">";
1976                         if ($action eq 'commitdiff') {
1977                                 # link to patch
1978                                 $patchno++;
1979                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1980                         }
1981                         print "</td>\n";
1982
1983                 } elsif ($diff{'status'} eq "D") { # deleted
1984                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1985                         print "<td>";
1986                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1987                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1988                                        -class => "list"}, esc_html($diff{'file'}));
1989                         print "</td>\n";
1990                         print "<td>$mode_chng</td>\n";
1991                         print "<td class=\"link\">";
1992                         if ($action eq 'commitdiff') {
1993                                 # link to patch
1994                                 $patchno++;
1995                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1996                                 print " | ";
1997                         }
1998                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1999                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2000                                       "blob") . " | ";
2001                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2002                                                      file_name=>$diff{'file'})},
2003                                       "blame") . " | ";
2004                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2005                                                      file_name=>$diff{'file'})},
2006                                       "history");
2007                         print "</td>\n";
2008
2009                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2010                         my $mode_chnge = "";
2011                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2012                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2013                                 if ($from_file_type != $to_file_type) {
2014                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2015                                 }
2016                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2017                                         if ($from_mode_str && $to_mode_str) {
2018                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2019                                         } elsif ($to_mode_str) {
2020                                                 $mode_chnge .= " mode: $to_mode_str";
2021                                         }
2022                                 }
2023                                 $mode_chnge .= "]</span>\n";
2024                         }
2025                         print "<td>";
2026                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2027                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2028                                       -class => "list"}, esc_html($diff{'file'}));
2029                         print "</td>\n";
2030                         print "<td>$mode_chnge</td>\n";
2031                         print "<td class=\"link\">";
2032                         if ($action eq 'commitdiff') {
2033                                 # link to patch
2034                                 $patchno++;
2035                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2036                                       " | ";
2037                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2038                                 # "commit" view and modified file (not onlu mode changed)
2039                                 print $cgi->a({-href => href(action=>"blobdiff",
2040                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2041                                                              hash_base=>$hash, hash_parent_base=>$parent,
2042                                                              file_name=>$diff{'file'})},
2043                                               "diff") .
2044                                       " | ";
2045                         }
2046                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2047                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2048                                       "blob") . " | ";
2049                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2050                                                      file_name=>$diff{'file'})},
2051                                       "blame") . " | ";
2052                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2053                                                      file_name=>$diff{'file'})},
2054                                       "history");
2055                         print "</td>\n";
2056
2057                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2058                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2059                         my $nstatus = $status_name{$diff{'status'}};
2060                         my $mode_chng = "";
2061                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2062                                 # mode also for directories, so we cannot use $to_mode_str
2063                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2064                         }
2065                         print "<td>" .
2066                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2067                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2068                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
2069                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2070                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2071                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2072                                       -class => "list"}, esc_html($diff{'from_file'})) .
2073                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2074                               "<td class=\"link\">";
2075                         if ($action eq 'commitdiff') {
2076                                 # link to patch
2077                                 $patchno++;
2078                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2079                                       " | ";
2080                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2081                                 # "commit" view and modified file (not only pure rename or copy)
2082                                 print $cgi->a({-href => href(action=>"blobdiff",
2083                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2084                                                              hash_base=>$hash, hash_parent_base=>$parent,
2085                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2086                                               "diff") .
2087                                       " | ";
2088                         }
2089                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2090                                                      hash_base=>$parent, file_name=>$diff{'from_file'})},
2091                                       "blob") . " | ";
2092                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2093                                                      file_name=>$diff{'from_file'})},
2094                                       "blame") . " | ";
2095                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2096                                                     file_name=>$diff{'from_file'})},
2097                                       "history");
2098                         print "</td>\n";
2099
2100                 } # we should not encounter Unmerged (U) or Unknown (X) status
2101                 print "</tr>\n";
2102         }
2103         print "</table>\n";
2104 }
2105
2106 sub git_patchset_body {
2107         my ($fd, $difftree, $hash, $hash_parent) = @_;
2108
2109         my $patch_idx = 0;
2110         my $in_header = 0;
2111         my $patch_found = 0;
2112         my $diffinfo;
2113
2114         print "<div class=\"patchset\">\n";
2115
2116         LINE:
2117         while (my $patch_line = <$fd>) {
2118                 chomp $patch_line;
2119
2120                 if ($patch_line =~ m/^diff /) { # "git diff" header
2121                         # beginning of patch (in patchset)
2122                         if ($patch_found) {
2123                                 # close previous patch
2124                                 print "</div>\n"; # class="patch"
2125                         } else {
2126                                 # first patch in patchset
2127                                 $patch_found = 1;
2128                         }
2129                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2130
2131                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2132                                 $diffinfo = $difftree->[$patch_idx];
2133                         } else {
2134                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2135                         }
2136                         $patch_idx++;
2137
2138                         if ($diffinfo->{'status'} eq "A") { # added
2139                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
2140                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2141                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2142                                               $diffinfo->{'to_id'}) . " (new)" .
2143                                       "</div>\n"; # class="diff_info"
2144
2145                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
2146                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
2147                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2148                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2149                                               $diffinfo->{'from_id'}) . " (deleted)" .
2150                                       "</div>\n"; # class="diff_info"
2151
2152                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
2153                                  $diffinfo->{'status'} eq "C" || # copied
2154                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
2155                                 print "<div class=\"diff_info\">" .
2156                                       file_type($diffinfo->{'from_mode'}) . ":" .
2157                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2158                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
2159                                               $diffinfo->{'from_id'}) .
2160                                       " -> " .
2161                                       file_type($diffinfo->{'to_mode'}) . ":" .
2162                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2163                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
2164                                               $diffinfo->{'to_id'});
2165                                 print "</div>\n"; # class="diff_info"
2166
2167                         } else { # modified, mode changed, ...
2168                                 print "<div class=\"diff_info\">" .
2169                                       file_type($diffinfo->{'from_mode'}) . ":" .
2170                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2171                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2172                                               $diffinfo->{'from_id'}) .
2173                                       " -> " .
2174                                       file_type($diffinfo->{'to_mode'}) . ":" .
2175                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2176                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2177                                               $diffinfo->{'to_id'});
2178                                 print "</div>\n"; # class="diff_info"
2179                         }
2180
2181                         #print "<div class=\"diff extended_header\">\n";
2182                         $in_header = 1;
2183                         next LINE;
2184                 } # start of patch in patchset
2185
2186
2187                 if ($in_header && $patch_line =~ m/^---/) {
2188                         #print "</div>\n"; # class="diff extended_header"
2189                         $in_header = 0;
2190
2191                         my $file = $diffinfo->{'from_file'};
2192                         $file  ||= $diffinfo->{'file'};
2193                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2194                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2195                                         -class => "list"}, esc_html($file));
2196                         $patch_line =~ s|a/.*$|a/$file|g;
2197                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2198
2199                         $patch_line = <$fd>;
2200                         chomp $patch_line;
2201
2202                         #$patch_line =~ m/^+++/;
2203                         $file    = $diffinfo->{'to_file'};
2204                         $file  ||= $diffinfo->{'file'};
2205                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2206                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2207                                         -class => "list"}, esc_html($file));
2208                         $patch_line =~ s|b/.*|b/$file|g;
2209                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2210
2211                         next LINE;
2212                 }
2213                 next LINE if $in_header;
2214
2215                 print format_diff_line($patch_line);
2216         }
2217         print "</div>\n" if $patch_found; # class="patch"
2218
2219         print "</div>\n"; # class="patchset"
2220 }
2221
2222 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2223
2224 sub git_project_list_body {
2225         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2226
2227         my ($check_forks) = gitweb_check_feature('forks');
2228
2229         my @projects;
2230         foreach my $pr (@$projlist) {
2231                 my (@aa) = git_get_last_activity($pr->{'path'});
2232                 unless (@aa) {
2233                         next;
2234                 }
2235                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2236                 if (!defined $pr->{'descr'}) {
2237                         my $descr = git_get_project_description($pr->{'path'}) || "";
2238                         $pr->{'descr'} = chop_str($descr, 25, 5);
2239                 }
2240                 if (!defined $pr->{'owner'}) {
2241                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2242                 }
2243                 if ($check_forks) {
2244                         my $pname = $pr->{'path'};
2245                         if (($pname =~ s/\.git$//) &&
2246                             ($pname !~ /\/$/) &&
2247                             (-d "$projectroot/$pname")) {
2248                                 $pr->{'forks'} = "-d $projectroot/$pname";
2249                         }
2250                         else {
2251                                 $pr->{'forks'} = 0;
2252                         }
2253                 }
2254                 push @projects, $pr;
2255         }
2256
2257         $order ||= "project";
2258         $from = 0 unless defined $from;
2259         $to = $#projects if (!defined $to || $#projects < $to);
2260
2261         print "<table class=\"project_list\">\n";
2262         unless ($no_header) {
2263                 print "<tr>\n";
2264                 if ($check_forks) {
2265                         print "<th></th>\n";
2266                 }
2267                 if ($order eq "project") {
2268                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2269                         print "<th>Project</th>\n";
2270                 } else {
2271                         print "<th>" .
2272                               $cgi->a({-href => href(project=>undef, order=>'project'),
2273                                        -class => "header"}, "Project") .
2274                               "</th>\n";
2275                 }
2276                 if ($order eq "descr") {
2277                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2278                         print "<th>Description</th>\n";
2279                 } else {
2280                         print "<th>" .
2281                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2282                                        -class => "header"}, "Description") .
2283                               "</th>\n";
2284                 }
2285                 if ($order eq "owner") {
2286                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2287                         print "<th>Owner</th>\n";
2288                 } else {
2289                         print "<th>" .
2290                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2291                                        -class => "header"}, "Owner") .
2292                               "</th>\n";
2293                 }
2294                 if ($order eq "age") {
2295                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2296                         print "<th>Last Change</th>\n";
2297                 } else {
2298                         print "<th>" .
2299                               $cgi->a({-href => href(project=>undef, order=>'age'),
2300                                        -class => "header"}, "Last Change") .
2301                               "</th>\n";
2302                 }
2303                 print "<th></th>\n" .
2304                       "</tr>\n";
2305         }
2306         my $alternate = 1;
2307         for (my $i = $from; $i <= $to; $i++) {
2308                 my $pr = $projects[$i];
2309                 if ($alternate) {
2310                         print "<tr class=\"dark\">\n";
2311                 } else {
2312                         print "<tr class=\"light\">\n";
2313                 }
2314                 $alternate ^= 1;
2315                 if ($check_forks) {
2316                         print "<td>";
2317                         if ($pr->{'forks'}) {
2318                                 print "<!-- $pr->{'forks'} -->\n";
2319                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2320                         }
2321                         print "</td>\n";
2322                 }
2323                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2324                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2325                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2326                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2327                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2328                       $pr->{'age_string'} . "</td>\n" .
2329                       "<td class=\"link\">" .
2330                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2331                       $cgi->a({-href => '/git-browser/by-commit.html?r='.$pr->{'path'}}, "graphiclog") . " | " .
2332                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2333                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2334                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2335                       "</td>\n" .
2336                       "</tr>\n";
2337         }
2338         if (defined $extra) {
2339                 print "<tr>\n";
2340                 if ($check_forks) {
2341                         print "<td></td>\n";
2342                 }
2343                 print "<td colspan=\"5\">$extra</td>\n" .
2344                       "</tr>\n";
2345         }
2346         print "</table>\n";
2347 }
2348
2349 sub git_shortlog_body {
2350         # uses global variable $project
2351         my ($revlist, $from, $to, $refs, $extra) = @_;
2352
2353         $from = 0 unless defined $from;
2354         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2355
2356         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2357         my $alternate = 1;
2358         for (my $i = $from; $i <= $to; $i++) {
2359                 my $commit = $revlist->[$i];
2360                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2361                 my $ref = format_ref_marker($refs, $commit);
2362                 my %co = parse_commit($commit);
2363                 if ($alternate) {
2364                         print "<tr class=\"dark\">\n";
2365                 } else {
2366                         print "<tr class=\"light\">\n";
2367                 }
2368                 $alternate ^= 1;
2369                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2370                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2371                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2372                       "<td>";
2373                 print format_subject_html($co{'title'}, $co{'title_short'},
2374                                           href(action=>"commit", hash=>$commit), $ref);
2375                 print "</td>\n" .
2376                       "<td class=\"link\">" .
2377                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2378                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2379                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2380                 if (gitweb_have_snapshot()) {
2381                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2382                 }
2383                 print "</td>\n" .
2384                       "</tr>\n";
2385         }
2386         if (defined $extra) {
2387                 print "<tr>\n" .
2388                       "<td colspan=\"4\">$extra</td>\n" .
2389                       "</tr>\n";
2390         }
2391         print "</table>\n";
2392 }
2393
2394 sub git_history_body {
2395         # Warning: assumes constant type (blob or tree) during history
2396         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2397
2398         $from = 0 unless defined $from;
2399         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2400
2401         print "<table class=\"history\" cellspacing=\"0\">\n";
2402         my $alternate = 1;
2403         for (my $i = $from; $i <= $to; $i++) {
2404                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2405                         next;
2406                 }
2407
2408                 my $commit = $1;
2409                 my %co = parse_commit($commit);
2410                 if (!%co) {
2411                         next;
2412                 }
2413
2414                 my $ref = format_ref_marker($refs, $commit);
2415
2416                 if ($alternate) {
2417                         print "<tr class=\"dark\">\n";
2418                 } else {
2419                         print "<tr class=\"light\">\n";
2420                 }
2421                 $alternate ^= 1;
2422                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2423                       # shortlog uses      chop_str($co{'author_name'}, 10)
2424                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2425                       "<td>";
2426                 # originally git_history used chop_str($co{'title'}, 50)
2427                 print format_subject_html($co{'title'}, $co{'title_short'},
2428                                           href(action=>"commit", hash=>$commit), $ref);
2429                 print "</td>\n" .
2430                       "<td class=\"link\">" .
2431                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2432                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2433
2434                 if ($ftype eq 'blob') {
2435                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2436                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2437                         if (defined $blob_current && defined $blob_parent &&
2438                                         $blob_current ne $blob_parent) {
2439                                 print " | " .
2440                                         $cgi->a({-href => href(action=>"blobdiff",
2441                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2442                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2443                                                                file_name=>$file_name)},
2444                                                 "diff to current");
2445                         }
2446                 }
2447                 print "</td>\n" .
2448                       "</tr>\n";
2449         }
2450         if (defined $extra) {
2451                 print "<tr>\n" .
2452                       "<td colspan=\"4\">$extra</td>\n" .
2453                       "</tr>\n";
2454         }
2455         print "</table>\n";
2456 }
2457
2458 sub git_tags_body {
2459         # uses global variable $project
2460         my ($taglist, $from, $to, $extra) = @_;
2461         $from = 0 unless defined $from;
2462         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2463
2464         print "<table class=\"tags\" cellspacing=\"0\">\n";
2465         my $alternate = 1;
2466         for (my $i = $from; $i <= $to; $i++) {
2467                 my $entry = $taglist->[$i];
2468                 my %tag = %$entry;
2469                 my $comment = $tag{'subject'};
2470                 my $comment_short;
2471                 if (defined $comment) {
2472                         $comment_short = chop_str($comment, 30, 5);
2473                 }
2474                 if ($alternate) {
2475                         print "<tr class=\"dark\">\n";
2476                 } else {
2477                         print "<tr class=\"light\">\n";
2478                 }
2479                 $alternate ^= 1;
2480                 print "<td><i>$tag{'age'}</i></td>\n" .
2481                       "<td>" .
2482                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2483                                -class => "list name"}, esc_html($tag{'name'})) .
2484                       "</td>\n" .
2485                       "<td>";
2486                 if (defined $comment) {
2487                         print format_subject_html($comment, $comment_short,
2488                                                   href(action=>"tag", hash=>$tag{'id'}));
2489                 }
2490                 print "</td>\n" .
2491                       "<td class=\"selflink\">";
2492                 if ($tag{'type'} eq "tag") {
2493                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2494                 } else {
2495                         print "&nbsp;";
2496                 }
2497                 print "</td>\n" .
2498                       "<td class=\"link\">" . " | " .
2499                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2500                 if ($tag{'reftype'} eq "commit") {
2501                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2502                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2503                 } elsif ($tag{'reftype'} eq "blob") {
2504                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2505                 }
2506                 print "</td>\n" .
2507                       "</tr>";
2508         }
2509         if (defined $extra) {
2510                 print "<tr>\n" .
2511                       "<td colspan=\"5\">$extra</td>\n" .
2512                       "</tr>\n";
2513         }
2514         print "</table>\n";
2515 }
2516
2517 sub git_heads_body {
2518         # uses global variable $project
2519         my ($headlist, $head, $from, $to, $extra) = @_;
2520         $from = 0 unless defined $from;
2521         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2522
2523         print "<table class=\"heads\" cellspacing=\"0\">\n";
2524         my $alternate = 1;
2525         for (my $i = $from; $i <= $to; $i++) {
2526                 my $entry = $headlist->[$i];
2527                 my %ref = %$entry;
2528                 my $curr = $ref{'id'} eq $head;
2529                 if ($alternate) {
2530                         print "<tr class=\"dark\">\n";
2531                 } else {
2532                         print "<tr class=\"light\">\n";
2533                 }
2534                 $alternate ^= 1;
2535                 print "<td><i>$ref{'age'}</i></td>\n" .
2536                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2537                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2538                                -class => "list name"},esc_html($ref{'name'})) .
2539                       "</td>\n" .
2540                       "<td class=\"link\">" .
2541                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2542                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2543                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2544                       "</td>\n" .
2545                       "</tr>";
2546         }
2547         if (defined $extra) {
2548                 print "<tr>\n" .
2549                       "<td colspan=\"3\">$extra</td>\n" .
2550                       "</tr>\n";
2551         }
2552         print "</table>\n";
2553 }
2554
2555 ## ======================================================================
2556 ## ======================================================================
2557 ## actions
2558
2559 sub git_project_list {
2560         my $order = $cgi->param('o');
2561         if (defined $order && $order !~ m/project|descr|owner|age/) {
2562                 die_error(undef, "Unknown order parameter");
2563         }
2564
2565         my @list = git_get_projects_list();
2566         if (!@list) {
2567                 die_error(undef, "No projects found");
2568         }
2569
2570         git_header_html();
2571         if (-f $home_text) {
2572                 print "<div class=\"index_include\">\n";
2573                 open (my $fd, $home_text);
2574                 print <$fd>;
2575                 close $fd;
2576                 print "</div>\n";
2577         }
2578         git_project_list_body(\@list, $order);
2579         git_footer_html();
2580 }
2581
2582 sub git_forks {
2583         my $order = $cgi->param('o');
2584         if (defined $order && $order !~ m/project|descr|owner|age/) {
2585                 die_error(undef, "Unknown order parameter");
2586         }
2587
2588         my @list = git_get_projects_list($project);
2589         if (!@list) {
2590                 die_error(undef, "No forks found");
2591         }
2592
2593         git_header_html();
2594         git_print_page_nav('','');
2595         git_print_header_div('summary', "$project forks");
2596         git_project_list_body(\@list, $order);
2597         git_footer_html();
2598 }
2599
2600 sub git_project_index {
2601         my @projects = git_get_projects_list($project);
2602
2603         print $cgi->header(
2604                 -type => 'text/plain',
2605                 -charset => 'utf-8',
2606                 -content_disposition => 'inline; filename="index.aux"');
2607
2608         foreach my $pr (@projects) {
2609                 if (!exists $pr->{'owner'}) {
2610                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2611                 }
2612
2613                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2614                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2615                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2616                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2617                 $path  =~ s/ /\+/g;
2618                 $owner =~ s/ /\+/g;
2619
2620                 print "$path $owner\n";
2621         }
2622 }
2623
2624 sub git_summary {
2625         my $descr = git_get_project_description($project) || "none";
2626         my $head = git_get_head_hash($project);
2627         my %co = parse_commit($head);
2628         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2629
2630         my $owner = git_get_project_owner($project);
2631
2632         my $refs = git_get_references();
2633         my @taglist  = git_get_tags_list(15);
2634         my @headlist = git_get_heads_list(15);
2635         my @forklist;
2636         my ($check_forks) = gitweb_check_feature('forks');
2637
2638         if ($check_forks) {
2639                 @forklist = git_get_projects_list($project);
2640         }
2641
2642         git_header_html();
2643         git_print_page_nav('summary','', $head);
2644
2645         print "<div class=\"title\">&nbsp;</div>\n";
2646         print "<table cellspacing=\"0\">\n" .
2647               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2648               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2649               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2650         # use per project git URL list in $projectroot/$project/cloneurl
2651         # or make project git URL from git base URL and project name
2652         my $url_tag = "URL";
2653         my @url_list = git_get_project_url_list($project);
2654         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2655         foreach my $git_url (@url_list) {
2656                 next unless $git_url;
2657                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2658                 $url_tag = "";
2659         }
2660         print "</table>\n";
2661
2662         if (-s "$projectroot/$project/README.html") {
2663                 if (open my $fd, "$projectroot/$project/README.html") {
2664                         print "<div class=\"title\">readme</div>\n";
2665                         print $_ while (<$fd>);
2666                         close $fd;
2667                 }
2668         }
2669
2670         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2671                 git_get_head_hash($project), "--"
2672                 or die_error(undef, "Open git-rev-list failed");
2673         my @revlist = map { chomp; $_ } <$fd>;
2674         close $fd;
2675         git_print_header_div('shortlog');
2676         git_shortlog_body(\@revlist, 0, 15, $refs,
2677                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2678
2679         if (@taglist) {
2680                 git_print_header_div('tags');
2681                 git_tags_body(\@taglist, 0, 15,
2682                               $cgi->a({-href => href(action=>"tags")}, "..."));
2683         }
2684
2685         if (@headlist) {
2686                 git_print_header_div('heads');
2687                 git_heads_body(\@headlist, $head, 0, 15,
2688                                $cgi->a({-href => href(action=>"heads")}, "..."));
2689         }
2690
2691         if (@forklist) {
2692                 git_print_header_div('forks');
2693                 git_project_list_body(\@forklist, undef, 0, 15,
2694                                       $cgi->a({-href => href(action=>"forks")}, "..."),
2695                                       'noheader');
2696         }
2697
2698         git_footer_html();
2699 }
2700
2701 sub git_tag {
2702         my $head = git_get_head_hash($project);
2703         git_header_html();
2704         git_print_page_nav('','', $head,undef,$head);
2705         my %tag = parse_tag($hash);
2706         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2707         print "<div class=\"title_text\">\n" .
2708               "<table cellspacing=\"0\">\n" .
2709               "<tr>\n" .
2710               "<td>object</td>\n" .
2711               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2712                                $tag{'object'}) . "</td>\n" .
2713               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2714                                               $tag{'type'}) . "</td>\n" .
2715               "</tr>\n";
2716         if (defined($tag{'author'})) {
2717                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2718                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2719                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2720                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2721                         "</td></tr>\n";
2722         }
2723         print "</table>\n\n" .
2724               "</div>\n";
2725         print "<div class=\"page_body\">";
2726         my $comment = $tag{'comment'};
2727         foreach my $line (@$comment) {
2728                 print esc_html($line) . "<br/>\n";
2729         }
2730         print "</div>\n";
2731         git_footer_html();
2732 }
2733
2734 sub git_blame2 {
2735         my $fd;
2736         my $ftype;
2737
2738         my ($have_blame) = gitweb_check_feature('blame');
2739         if (!$have_blame) {
2740                 die_error('403 Permission denied', "Permission denied");
2741         }
2742         die_error('404 Not Found', "File name not defined") if (!$file_name);
2743         $hash_base ||= git_get_head_hash($project);
2744         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2745         my %co = parse_commit($hash_base)
2746                 or die_error(undef, "Reading commit failed");
2747         if (!defined $hash) {
2748                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2749                         or die_error(undef, "Error looking up file");
2750         }
2751         $ftype = git_get_type($hash);
2752         if ($ftype !~ "blob") {
2753                 die_error("400 Bad Request", "Object is not a blob");
2754         }
2755         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
2756               $file_name, $hash_base)
2757                 or die_error(undef, "Open git-blame failed");
2758         git_header_html();
2759         my $formats_nav =
2760                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2761                         "blob") .
2762                 " | " .
2763                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2764                         "history") .
2765                 " | " .
2766                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2767                         "HEAD");
2768         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2769         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2770         git_print_page_path($file_name, $ftype, $hash_base);
2771         my @rev_color = (qw(light2 dark2));
2772         my $num_colors = scalar(@rev_color);
2773         my $current_color = 0;
2774         my $last_rev;
2775         print <<HTML;
2776 <div class="page_body">
2777 <table class="blame">
2778 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2779 HTML
2780         my %metainfo = ();
2781         while (1) {
2782                 $_ = <$fd>;
2783                 last unless defined $_;
2784                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
2785                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
2786                 if (!exists $metainfo{$full_rev}) {
2787                         $metainfo{$full_rev} = {};
2788                 }
2789                 my $meta = $metainfo{$full_rev};
2790                 while (<$fd>) {
2791                         last if (s/^\t//);
2792                         if (/^(\S+) (.*)$/) {
2793                                 $meta->{$1} = $2;
2794                         }
2795                 }
2796                 my $data = $_;
2797                 my $rev = substr($full_rev, 0, 8);
2798                 my $author = $meta->{'author'};
2799                 my %date = parse_date($meta->{'author-time'},
2800                                       $meta->{'author-tz'});
2801                 my $date = $date{'iso-tz'};
2802                 if ($group_size) {
2803                         $current_color = ++$current_color % $num_colors;
2804                 }
2805                 print "<tr class=\"$rev_color[$current_color]\">\n";
2806                 if ($group_size) {
2807                         print "<td class=\"sha1\"";
2808                         print " title=\"". esc_html($author) . ", $date\"";
2809                         print " rowspan=\"$group_size\"" if ($group_size > 1);
2810                         print ">";
2811                         print $cgi->a({-href => href(action=>"commit",
2812                                                      hash=>$full_rev,
2813                                                      file_name=>$file_name)},
2814                                       esc_html($rev));
2815                         print "</td>\n";
2816                 }
2817                 my $blamed = href(action => 'blame',
2818                                   file_name => $meta->{'filename'},
2819                                   hash_base => $full_rev);
2820                 print "<td class=\"linenr\">";
2821                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
2822                                 -id => "l$lineno",
2823                                 -class => "linenr" },
2824                               esc_html($lineno));
2825                 print "</td>";
2826                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2827                 print "</tr>\n";
2828         }
2829         print "</table>\n";
2830         print "</div>";
2831         close $fd
2832                 or print "Reading blob failed\n";
2833         git_footer_html();
2834 }
2835
2836 sub git_blame {
2837         my $fd;
2838
2839         my ($have_blame) = gitweb_check_feature('blame');
2840         if (!$have_blame) {
2841                 die_error('403 Permission denied', "Permission denied");
2842         }
2843         die_error('404 Not Found', "File name not defined") if (!$file_name);
2844         $hash_base ||= git_get_head_hash($project);
2845         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2846         my %co = parse_commit($hash_base)
2847                 or die_error(undef, "Reading commit failed");
2848         if (!defined $hash) {
2849                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2850                         or die_error(undef, "Error lookup file");
2851         }
2852         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2853                 or die_error(undef, "Open git-annotate failed");
2854         git_header_html();
2855         my $formats_nav =
2856                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2857                         "blob") .
2858                 " | " .
2859                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2860                         "history") .
2861                 " | " .
2862                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2863                         "HEAD");
2864         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2865         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2866         git_print_page_path($file_name, 'blob', $hash_base);
2867         print "<div class=\"page_body\">\n";
2868         print <<HTML;
2869 <table class="blame">
2870   <tr>
2871     <th>Commit</th>
2872     <th>Age</th>
2873     <th>Author</th>
2874     <th>Line</th>
2875     <th>Data</th>
2876   </tr>
2877 HTML
2878         my @line_class = (qw(light dark));
2879         my $line_class_len = scalar (@line_class);
2880         my $line_class_num = $#line_class;
2881         while (my $line = <$fd>) {
2882                 my $long_rev;
2883                 my $short_rev;
2884                 my $author;
2885                 my $time;
2886                 my $lineno;
2887                 my $data;
2888                 my $age;
2889                 my $age_str;
2890                 my $age_class;
2891
2892                 chomp $line;
2893                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2894
2895                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2896                         $long_rev = $1;
2897                         $author   = $2;
2898                         $time     = $3;
2899                         $lineno   = $4;
2900                         $data     = $5;
2901                 } else {
2902                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2903                         next;
2904                 }
2905                 $short_rev  = substr ($long_rev, 0, 8);
2906                 $age        = time () - $time;
2907                 $age_str    = age_string ($age);
2908                 $age_str    =~ s/ /&nbsp;/g;
2909                 $age_class  = age_class($age);
2910                 $author     = esc_html ($author);
2911                 $author     =~ s/ /&nbsp;/g;
2912
2913                 $data = untabify($data);
2914                 $data = esc_html ($data);
2915
2916                 print <<HTML;
2917   <tr class="$line_class[$line_class_num]">
2918     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2919     <td class="$age_class">$age_str</td>
2920     <td>$author</td>
2921     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2922     <td class="pre">$data</td>
2923   </tr>
2924 HTML
2925         } # while (my $line = <$fd>)
2926         print "</table>\n\n";
2927         close $fd
2928                 or print "Reading blob failed.\n";
2929         print "</div>";
2930         git_footer_html();
2931 }
2932
2933 sub git_tags {
2934         my $head = git_get_head_hash($project);
2935         git_header_html();
2936         git_print_page_nav('','', $head,undef,$head);
2937         git_print_header_div('summary', $project);
2938
2939         my @tagslist = git_get_tags_list();
2940         if (@tagslist) {
2941                 git_tags_body(\@tagslist);
2942         }
2943         git_footer_html();
2944 }
2945
2946 sub git_heads {
2947         my $head = git_get_head_hash($project);
2948         git_header_html();
2949         git_print_page_nav('','', $head,undef,$head);
2950         git_print_header_div('summary', $project);
2951
2952         my @headslist = git_get_heads_list();
2953         if (@headslist) {
2954                 git_heads_body(\@headslist, $head);
2955         }
2956         git_footer_html();
2957 }
2958
2959 sub git_blob_plain {
2960         my $expires;
2961
2962         if (!defined $hash) {
2963                 if (defined $file_name) {
2964                         my $base = $hash_base || git_get_head_hash($project);
2965                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2966                                 or die_error(undef, "Error lookup file");
2967                 } else {
2968                         die_error(undef, "No file name defined");
2969                 }
2970         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2971                 # blobs defined by non-textual hash id's can be cached
2972                 $expires = "+1d";
2973         }
2974
2975         my $type = shift;
2976         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2977                 or die_error(undef, "Couldn't cat $file_name, $hash");
2978
2979         $type ||= blob_mimetype($fd, $file_name);
2980
2981         # save as filename, even when no $file_name is given
2982         my $save_as = "$hash";
2983         if (defined $file_name) {
2984                 $save_as = $file_name;
2985         } elsif ($type =~ m/^text\//) {
2986                 $save_as .= '.txt';
2987         }
2988
2989         print $cgi->header(
2990                 -type => "$type",
2991                 -expires=>$expires,
2992                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2993         undef $/;
2994         binmode STDOUT, ':raw';
2995         print <$fd>;
2996         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2997         $/ = "\n";
2998         close $fd;
2999 }
3000
3001 sub git_blob {
3002         my $expires;
3003
3004         if (!defined $hash) {
3005                 if (defined $file_name) {
3006                         my $base = $hash_base || git_get_head_hash($project);
3007                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3008                                 or die_error(undef, "Error lookup file");
3009                 } else {
3010                         die_error(undef, "No file name defined");
3011                 }
3012         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3013                 # blobs defined by non-textual hash id's can be cached
3014                 $expires = "+1d";
3015         }
3016
3017         my ($have_blame) = gitweb_check_feature('blame');
3018         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3019                 or die_error(undef, "Couldn't cat $file_name, $hash");
3020         my $mimetype = blob_mimetype($fd, $file_name);
3021         if ($mimetype !~ m/^text\//) {
3022                 close $fd;
3023                 return git_blob_plain($mimetype);
3024         }
3025         git_header_html(undef, $expires);
3026         my $formats_nav = '';
3027         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3028                 if (defined $file_name) {
3029                         if ($have_blame) {
3030                                 $formats_nav .=
3031                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3032                                                                hash=>$hash, file_name=>$file_name)},
3033                                                 "blame") .
3034                                         " | ";
3035                         }
3036                         $formats_nav .=
3037                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3038                                                        hash=>$hash, file_name=>$file_name)},
3039                                         "history") .
3040                                 " | " .
3041                                 $cgi->a({-href => href(action=>"blob_plain",
3042                                                        hash=>$hash, file_name=>$file_name)},
3043                                         "raw") .
3044                                 " | " .
3045                                 $cgi->a({-href => href(action=>"blob",
3046                                                        hash_base=>"HEAD", file_name=>$file_name)},
3047                                         "HEAD");
3048                 } else {
3049                         $formats_nav .=
3050                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3051                 }
3052                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3053                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3054         } else {
3055                 print "<div class=\"page_nav\">\n" .
3056                       "<br/><br/></div>\n" .
3057                       "<div class=\"title\">$hash</div>\n";
3058         }
3059         git_print_page_path($file_name, "blob", $hash_base);
3060         print "<div class=\"page_body\">\n";
3061         my $nr;
3062         while (my $line = <$fd>) {
3063                 chomp $line;
3064                 $nr++;
3065                 $line = untabify($line);
3066                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3067                        $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3068         }
3069         close $fd
3070                 or print "Reading blob failed.\n";
3071         print "</div>";
3072         git_footer_html();
3073 }
3074
3075 sub git_tree {
3076         my $have_snapshot = gitweb_have_snapshot();
3077
3078         if (!defined $hash_base) {
3079                 $hash_base = "HEAD";
3080         }
3081         if (!defined $hash) {
3082                 if (defined $file_name) {
3083                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3084                 } else {
3085                         $hash = $hash_base;
3086                 }
3087         }
3088         $/ = "\0";
3089         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3090                 or die_error(undef, "Open git-ls-tree failed");
3091         my @entries = map { chomp; $_ } <$fd>;
3092         close $fd or die_error(undef, "Reading tree failed");
3093         $/ = "\n";
3094
3095         my $refs = git_get_references();
3096         my $ref = format_ref_marker($refs, $hash_base);
3097         git_header_html();
3098         my $basedir = '';
3099         my ($have_blame) = gitweb_check_feature('blame');
3100         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3101                 my @views_nav = ();
3102                 if (defined $file_name) {
3103                         push @views_nav,
3104                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3105                                                        hash=>$hash, file_name=>$file_name)},
3106                                         "history"),
3107                                 $cgi->a({-href => href(action=>"tree",
3108                                                        hash_base=>"HEAD", file_name=>$file_name)},
3109                                         "HEAD"),
3110                 }
3111                 if ($have_snapshot) {
3112                         # FIXME: Should be available when we have no hash base as well.
3113                         push @views_nav,
3114                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3115                                         "snapshot");
3116                 }
3117                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3118                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3119         } else {
3120                 undef $hash_base;
3121                 print "<div class=\"page_nav\">\n";
3122                 print "<br/><br/></div>\n";
3123                 print "<div class=\"title\">$hash</div>\n";
3124         }
3125         if (defined $file_name) {
3126                 $basedir = $file_name;
3127                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3128                         $basedir .= '/';
3129                 }
3130         }
3131         git_print_page_path($file_name, 'tree', $hash_base);
3132         print "<div class=\"page_body\">\n";
3133         print "<table cellspacing=\"0\">\n";
3134         my $alternate = 1;
3135         # '..' (top directory) link if possible
3136         if (defined $hash_base &&
3137             defined $file_name && $file_name =~ m![^/]+$!) {
3138                 if ($alternate) {
3139                         print "<tr class=\"dark\">\n";
3140                 } else {
3141                         print "<tr class=\"light\">\n";
3142                 }
3143                 $alternate ^= 1;
3144
3145                 my $up = $file_name;
3146                 $up =~ s!/?[^/]+$!!;
3147                 undef $up unless $up;
3148                 # based on git_print_tree_entry
3149                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3150                 print '<td class="list">';
3151                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3152                                              file_name=>$up)},
3153                               "..");
3154                 print "</td>\n";
3155                 print "<td class=\"link\"></td>\n";
3156
3157                 print "</tr>\n";
3158         }
3159         foreach my $line (@entries) {
3160                 my %t = parse_ls_tree_line($line, -z => 1);
3161
3162                 if ($alternate) {
3163                         print "<tr class=\"dark\">\n";
3164                 } else {
3165                         print "<tr class=\"light\">\n";
3166                 }
3167                 $alternate ^= 1;
3168
3169                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3170
3171                 print "</tr>\n";
3172         }
3173         print "</table>\n" .
3174               "</div>";
3175         git_footer_html();
3176 }
3177
3178 sub git_snapshot {
3179         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3180         my $have_snapshot = (defined $ctype && defined $suffix);
3181         if (!$have_snapshot) {
3182                 die_error('403 Permission denied', "Permission denied");
3183         }
3184
3185         if (!defined $hash) {
3186                 $hash = git_get_head_hash($project);
3187         }
3188
3189         my $filename = basename($project) . "-$hash.tar.$suffix";
3190
3191         print $cgi->header(
3192                 -type => 'application/x-tar',
3193                 -content_encoding => $ctype,
3194                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3195                 -status => '200 OK');
3196
3197         my $git = git_cmd_str();
3198         my $name = $project;
3199         $name =~ s/\047/\047\\\047\047/g;
3200         open my $fd, "-|",
3201         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3202                 or die_error(undef, "Execute git-tar-tree failed.");
3203         binmode STDOUT, ':raw';
3204         print <$fd>;
3205         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3206         close $fd;
3207
3208 }
3209
3210 sub git_log {
3211         my $head = git_get_head_hash($project);
3212         if (!defined $hash) {
3213                 $hash = $head;
3214         }
3215         if (!defined $page) {
3216                 $page = 0;
3217         }
3218         my $refs = git_get_references();
3219
3220         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3221         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3222                 or die_error(undef, "Open git-rev-list failed");
3223         my @revlist = map { chomp; $_ } <$fd>;
3224         close $fd;
3225
3226         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3227
3228         git_header_html();
3229         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3230
3231         if (!@revlist) {
3232                 my %co = parse_commit($hash);
3233
3234                 git_print_header_div('summary', $project);
3235                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3236         }
3237         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3238                 my $commit = $revlist[$i];
3239                 my $ref = format_ref_marker($refs, $commit);
3240                 my %co = parse_commit($commit);
3241                 next if !%co;
3242                 my %ad = parse_date($co{'author_epoch'});
3243                 git_print_header_div('commit',
3244                                "<span class=\"age\">$co{'age_string'}</span>" .
3245                                esc_html($co{'title'}) . $ref,
3246                                $commit);
3247                 print "<div class=\"title_text\">\n" .
3248                       "<div class=\"log_link\">\n" .
3249                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3250                       " | " .
3251                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3252                       " | " .
3253                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3254                       "<br/>\n" .
3255                       "</div>\n" .
3256                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3257                       "</div>\n";
3258
3259                 print "<div class=\"log_body\">\n";
3260                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3261                 print "</div>\n";
3262         }
3263         git_footer_html();
3264 }
3265
3266 sub git_commit {
3267         my %co = parse_commit($hash);
3268         if (!%co) {
3269                 die_error(undef, "Unknown commit object");
3270         }
3271         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3272         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3273
3274         my $parent = $co{'parent'};
3275         if (!defined $parent) {
3276                 $parent = "--root";
3277         }
3278         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3279                 @diff_opts, $parent, $hash, "--"
3280                 or die_error(undef, "Open git-diff-tree failed");
3281         my @difftree = map { chomp; $_ } <$fd>;
3282         close $fd or die_error(undef, "Reading git-diff-tree failed");
3283
3284         # non-textual hash id's can be cached
3285         my $expires;
3286         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3287                 $expires = "+1d";
3288         }
3289         my $refs = git_get_references();
3290         my $ref = format_ref_marker($refs, $co{'id'});
3291
3292         my $have_snapshot = gitweb_have_snapshot();
3293
3294         my @views_nav = ();
3295         if (defined $file_name && defined $co{'parent'}) {
3296                 push @views_nav,
3297                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3298                                 "blame");
3299         }
3300         git_header_html(undef, $expires);
3301         git_print_page_nav('commit', '',
3302                            $hash, $co{'tree'}, $hash,
3303                            join (' | ', @views_nav));
3304
3305         if (defined $co{'parent'}) {
3306                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3307         } else {
3308                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3309         }
3310         print "<div class=\"title_text\">\n" .
3311               "<table cellspacing=\"0\">\n";
3312         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3313               "<tr>" .
3314               "<td></td><td> $ad{'rfc2822'}";
3315         if ($ad{'hour_local'} < 6) {
3316                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3317                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3318         } else {
3319                 printf(" (%02d:%02d %s)",
3320                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3321         }
3322         print "</td>" .
3323               "</tr>\n";
3324         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3325         print "<tr><td></td><td> $cd{'rfc2822'}" .
3326               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3327               "</td></tr>\n";
3328         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3329         print "<tr>" .
3330               "<td>tree</td>" .
3331               "<td class=\"sha1\">" .
3332               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3333                        class => "list"}, $co{'tree'}) .
3334               "</td>" .
3335               "<td class=\"link\">" .
3336               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3337                       "tree");
3338         if ($have_snapshot) {
3339                 print " | " .
3340                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3341         }
3342         print "</td>" .
3343               "</tr>\n";
3344         my $parents = $co{'parents'};
3345         foreach my $par (@$parents) {
3346                 print "<tr>" .
3347                       "<td>parent</td>" .
3348                       "<td class=\"sha1\">" .
3349                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3350                                class => "list"}, $par) .
3351                       "</td>" .
3352                       "<td class=\"link\">" .
3353                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3354                       " | " .
3355                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3356                       "</td>" .
3357                       "</tr>\n";
3358         }
3359         print "</table>".
3360               "</div>\n";
3361
3362         print "<div class=\"page_body\">\n";
3363         git_print_log($co{'comment'});
3364         print "</div>\n";
3365
3366         git_difftree_body(\@difftree, $hash, $parent);
3367
3368         git_footer_html();
3369 }
3370
3371 sub git_blobdiff {
3372         my $format = shift || 'html';
3373
3374         my $fd;
3375         my @difftree;
3376         my %diffinfo;
3377         my $expires;
3378
3379         # preparing $fd and %diffinfo for git_patchset_body
3380         # new style URI
3381         if (defined $hash_base && defined $hash_parent_base) {
3382                 if (defined $file_name) {
3383                         # read raw output
3384                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3385                                 $hash_parent_base, $hash_base,
3386                                 "--", $file_name
3387                                 or die_error(undef, "Open git-diff-tree failed");
3388                         @difftree = map { chomp; $_ } <$fd>;
3389                         close $fd
3390                                 or die_error(undef, "Reading git-diff-tree failed");
3391                         @difftree
3392                                 or die_error('404 Not Found', "Blob diff not found");
3393
3394                 } elsif (defined $hash &&
3395                          $hash =~ /[0-9a-fA-F]{40}/) {
3396                         # try to find filename from $hash
3397
3398                         # read filtered raw output
3399                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3400                                 $hash_parent_base, $hash_base, "--"
3401                                 or die_error(undef, "Open git-diff-tree failed");
3402                         @difftree =
3403                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3404                                 # $hash == to_id
3405                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3406                                 map { chomp; $_ } <$fd>;
3407                         close $fd
3408                                 or die_error(undef, "Reading git-diff-tree failed");
3409                         @difftree
3410                                 or die_error('404 Not Found', "Blob diff not found");
3411
3412                 } else {
3413                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3414                 }
3415
3416                 if (@difftree > 1) {
3417                         die_error('404 Not Found', "Ambiguous blob diff specification");
3418                 }
3419
3420                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3421                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3422                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3423
3424                 $hash_parent ||= $diffinfo{'from_id'};
3425                 $hash        ||= $diffinfo{'to_id'};
3426
3427                 # non-textual hash id's can be cached
3428                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3429                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3430                         $expires = '+1d';
3431                 }
3432
3433                 # open patch output
3434                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3435                         '-p', $hash_parent_base, $hash_base,
3436                         "--", $file_name
3437                         or die_error(undef, "Open git-diff-tree failed");
3438         }
3439
3440         # old/legacy style URI
3441         if (!%diffinfo && # if new style URI failed
3442             defined $hash && defined $hash_parent) {
3443                 # fake git-diff-tree raw output
3444                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3445                 $diffinfo{'from_id'} = $hash_parent;
3446                 $diffinfo{'to_id'}   = $hash;
3447                 if (defined $file_name) {
3448                         if (defined $file_parent) {
3449                                 $diffinfo{'status'} = '2';
3450                                 $diffinfo{'from_file'} = $file_parent;
3451                                 $diffinfo{'to_file'}   = $file_name;
3452                         } else { # assume not renamed
3453                                 $diffinfo{'status'} = '1';
3454                                 $diffinfo{'from_file'} = $file_name;
3455                                 $diffinfo{'to_file'}   = $file_name;
3456                         }
3457                 } else { # no filename given
3458                         $diffinfo{'status'} = '2';
3459                         $diffinfo{'from_file'} = $hash_parent;
3460                         $diffinfo{'to_file'}   = $hash;
3461                 }
3462
3463                 # non-textual hash id's can be cached
3464                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3465                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3466                         $expires = '+1d';
3467                 }
3468
3469                 # open patch output
3470                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3471                         $hash_parent, $hash, "--"
3472                         or die_error(undef, "Open git-diff failed");
3473         } else  {
3474                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3475                         unless %diffinfo;
3476         }
3477
3478         # header
3479         if ($format eq 'html') {
3480                 my $formats_nav =
3481                         $cgi->a({-href => href(action=>"blobdiff_plain",
3482                                                hash=>$hash, hash_parent=>$hash_parent,
3483                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3484                                                file_name=>$file_name, file_parent=>$file_parent)},
3485                                 "raw");
3486                 git_header_html(undef, $expires);
3487                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3488                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3489                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3490                 } else {
3491                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3492                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3493                 }
3494                 if (defined $file_name) {
3495                         git_print_page_path($file_name, "blob", $hash_base);
3496                 } else {
3497                         print "<div class=\"page_path\"></div>\n";
3498                 }
3499
3500         } elsif ($format eq 'plain') {
3501                 print $cgi->header(
3502                         -type => 'text/plain',
3503                         -charset => 'utf-8',
3504                         -expires => $expires,
3505                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3506
3507                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3508
3509         } else {
3510                 die_error(undef, "Unknown blobdiff format");
3511         }
3512
3513         # patch
3514         if ($format eq 'html') {
3515                 print "<div class=\"page_body\">\n";
3516
3517                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3518                 close $fd;
3519
3520                 print "</div>\n"; # class="page_body"
3521                 git_footer_html();
3522
3523         } else {
3524                 while (my $line = <$fd>) {
3525                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3526                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3527
3528                         print $line;
3529
3530                         last if $line =~ m!^\+\+\+!;
3531                 }
3532                 local $/ = undef;
3533                 print <$fd>;
3534                 close $fd;
3535         }
3536 }
3537
3538 sub git_blobdiff_plain {
3539         git_blobdiff('plain');
3540 }
3541
3542 sub git_commitdiff {
3543         my $format = shift || 'html';
3544         my %co = parse_commit($hash);
3545         if (!%co) {
3546                 die_error(undef, "Unknown commit object");
3547         }
3548
3549         # we need to prepare $formats_nav before any parameter munging
3550         my $formats_nav;
3551         if ($format eq 'html') {
3552                 $formats_nav =
3553                         $cgi->a({-href => href(action=>"commitdiff_plain",
3554                                                hash=>$hash, hash_parent=>$hash_parent)},
3555                                 "raw");
3556
3557                 if (defined $hash_parent) {
3558                         # commitdiff with two commits given
3559                         my $hash_parent_short = $hash_parent;
3560                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3561                                 $hash_parent_short = substr($hash_parent, 0, 7);
3562                         }
3563                         $formats_nav .=
3564                                 ' (from: ' .
3565                                 $cgi->a({-href => href(action=>"commitdiff",
3566                                                        hash=>$hash_parent)},
3567                                         esc_html($hash_parent_short)) .
3568                                 ')';
3569                 } elsif (!$co{'parent'}) {
3570                         # --root commitdiff
3571                         $formats_nav .= ' (initial)';
3572                 } elsif (scalar @{$co{'parents'}} == 1) {
3573                         # single parent commit
3574                         $formats_nav .=
3575                                 ' (parent: ' .
3576                                 $cgi->a({-href => href(action=>"commitdiff",
3577                                                        hash=>$co{'parent'})},
3578                                         esc_html(substr($co{'parent'}, 0, 7))) .
3579                                 ')';
3580                 } else {
3581                         # merge commit
3582                         $formats_nav .=
3583                                 ' (merge: ' .
3584                                 join(' ', map {
3585                                         $cgi->a({-href => href(action=>"commitdiff",
3586                                                                hash=>$_)},
3587                                                 esc_html(substr($_, 0, 7)));
3588                                 } @{$co{'parents'}} ) .
3589                                 ')';
3590                 }
3591         }
3592
3593         if (!defined $hash_parent) {
3594                 $hash_parent = $co{'parent'} || '--root';
3595         }
3596
3597         # read commitdiff
3598         my $fd;
3599         my @difftree;
3600         if ($format eq 'html') {
3601                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3602                         "--no-commit-id", "--patch-with-raw", "--full-index",
3603                         $hash_parent, $hash, "--"
3604                         or die_error(undef, "Open git-diff-tree failed");
3605
3606                 while (chomp(my $line = <$fd>)) {
3607                         # empty line ends raw part of diff-tree output
3608                         last unless $line;
3609                         push @difftree, $line;
3610                 }
3611
3612         } elsif ($format eq 'plain') {
3613                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3614                         '-p', $hash_parent, $hash, "--"
3615                         or die_error(undef, "Open git-diff-tree failed");
3616
3617         } else {
3618                 die_error(undef, "Unknown commitdiff format");
3619         }
3620
3621         # non-textual hash id's can be cached
3622         my $expires;
3623         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3624                 $expires = "+1d";
3625         }
3626
3627         # write commit message
3628         if ($format eq 'html') {
3629                 my $refs = git_get_references();
3630                 my $ref = format_ref_marker($refs, $co{'id'});
3631
3632                 git_header_html(undef, $expires);
3633                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3634                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3635                 git_print_authorship(\%co);
3636                 print "<div class=\"page_body\">\n";
3637                 if (@{$co{'comment'}} > 1) {
3638                         print "<div class=\"log\">\n";
3639                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
3640                         print "</div>\n"; # class="log"
3641                 }
3642
3643         } elsif ($format eq 'plain') {
3644                 my $refs = git_get_references("tags");
3645                 my $tagname = git_get_rev_name_tags($hash);
3646                 my $filename = basename($project) . "-$hash.patch";
3647
3648                 print $cgi->header(
3649                         -type => 'text/plain',
3650                         -charset => 'utf-8',
3651                         -expires => $expires,
3652                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3653                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3654                 print <<TEXT;
3655 From: $co{'author'}
3656 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3657 Subject: $co{'title'}
3658 TEXT
3659                 print "X-Git-Tag: $tagname\n" if $tagname;
3660                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3661
3662                 foreach my $line (@{$co{'comment'}}) {
3663                         print "$line\n";
3664                 }
3665                 print "---\n\n";
3666         }
3667
3668         # write patch
3669         if ($format eq 'html') {
3670                 git_difftree_body(\@difftree, $hash, $hash_parent);
3671                 print "<br/>\n";
3672
3673                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3674                 close $fd;
3675                 print "</div>\n"; # class="page_body"
3676                 git_footer_html();
3677
3678         } elsif ($format eq 'plain') {
3679                 local $/ = undef;
3680                 print <$fd>;
3681                 close $fd
3682                         or print "Reading git-diff-tree failed\n";
3683         }
3684 }
3685
3686 sub git_commitdiff_plain {
3687         git_commitdiff('plain');
3688 }
3689
3690 sub git_history {
3691         if (!defined $hash_base) {
3692                 $hash_base = git_get_head_hash($project);
3693         }
3694         if (!defined $page) {
3695                 $page = 0;
3696         }
3697         my $ftype;
3698         my %co = parse_commit($hash_base);
3699         if (!%co) {
3700                 die_error(undef, "Unknown commit object");
3701         }
3702
3703         my $refs = git_get_references();
3704         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3705
3706         if (!defined $hash && defined $file_name) {
3707                 $hash = git_get_hash_by_path($hash_base, $file_name);
3708         }
3709         if (defined $hash) {
3710                 $ftype = git_get_type($hash);
3711         }
3712
3713         open my $fd, "-|",
3714                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3715                         or die_error(undef, "Open git-rev-list-failed");
3716         my @revlist = map { chomp; $_ } <$fd>;
3717         close $fd
3718                 or die_error(undef, "Reading git-rev-list failed");
3719
3720         my $paging_nav = '';
3721         if ($page > 0) {
3722                 $paging_nav .=
3723                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3724                                                file_name=>$file_name)},
3725                                 "first");
3726                 $paging_nav .= " &sdot; " .
3727                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3728                                                file_name=>$file_name, page=>$page-1),
3729                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3730         } else {
3731                 $paging_nav .= "first";
3732                 $paging_nav .= " &sdot; prev";
3733         }
3734         if ($#revlist >= (100 * ($page+1)-1)) {
3735                 $paging_nav .= " &sdot; " .
3736                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3737                                                file_name=>$file_name, page=>$page+1),
3738                                  -accesskey => "n", -title => "Alt-n"}, "next");
3739         } else {
3740                 $paging_nav .= " &sdot; next";
3741         }
3742         my $next_link = '';
3743         if ($#revlist >= (100 * ($page+1)-1)) {
3744                 $next_link =
3745                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3746                                                file_name=>$file_name, page=>$page+1),
3747                                  -title => "Alt-n"}, "next");
3748         }
3749
3750         git_header_html();
3751         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3752         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3753         git_print_page_path($file_name, $ftype, $hash_base);
3754
3755         git_history_body(\@revlist, ($page * 100), $#revlist,
3756                          $refs, $hash_base, $ftype, $next_link);
3757
3758         git_footer_html();
3759 }
3760
3761 sub git_search {
3762         if (!defined $searchtext) {
3763                 die_error(undef, "Text field empty");
3764         }
3765         if (!defined $hash) {
3766                 $hash = git_get_head_hash($project);
3767         }
3768         my %co = parse_commit($hash);
3769         if (!%co) {
3770                 die_error(undef, "Unknown commit object");
3771         }
3772
3773         $searchtype ||= 'commit';
3774         if ($searchtype eq 'pickaxe') {
3775                 # pickaxe may take all resources of your box and run for several minutes
3776                 # with every query - so decide by yourself how public you make this feature
3777                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3778                 if (!$have_pickaxe) {
3779                         die_error('403 Permission denied', "Permission denied");
3780                 }
3781         }
3782
3783         git_header_html();
3784         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3785         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3786
3787         print "<table cellspacing=\"0\">\n";
3788         my $alternate = 1;
3789         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
3790                 $/ = "\0";
3791                 open my $fd, "-|", git_cmd(), "rev-list",
3792                         "--header", "--parents", $hash, "--"
3793                         or next;
3794                 while (my $commit_text = <$fd>) {
3795                         if (!grep m/$searchtext/i, $commit_text) {
3796                                 next;
3797                         }
3798                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3799                                 next;
3800                         }
3801                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3802                                 next;
3803                         }
3804                         my @commit_lines = split "\n", $commit_text;
3805                         my %co = parse_commit(undef, \@commit_lines);
3806                         if (!%co) {
3807                                 next;
3808                         }
3809                         if ($alternate) {
3810                                 print "<tr class=\"dark\">\n";
3811                         } else {
3812                                 print "<tr class=\"light\">\n";
3813                         }
3814                         $alternate ^= 1;
3815                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3816                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3817                               "<td>" .
3818                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3819                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3820                         my $comment = $co{'comment'};
3821                         foreach my $line (@$comment) {
3822                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3823                                         my $lead = esc_html($1) || "";
3824                                         $lead = chop_str($lead, 30, 10);
3825                                         my $match = esc_html($2) || "";
3826                                         my $trail = esc_html($3) || "";
3827                                         $trail = chop_str($trail, 30, 10);
3828                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3829                                         print chop_str($text, 80, 5) . "<br/>\n";
3830                                 }
3831                         }
3832                         print "</td>\n" .
3833                               "<td class=\"link\">" .
3834                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3835                               " | " .
3836                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3837                         print "</td>\n" .
3838                               "</tr>\n";
3839                 }
3840                 close $fd;
3841         }
3842
3843         if ($searchtype eq 'pickaxe') {
3844                 $/ = "\n";
3845                 my $git_command = git_cmd_str();
3846                 open my $fd, "-|", "$git_command rev-list $hash | " .
3847                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3848                 undef %co;
3849                 my @files;
3850                 while (my $line = <$fd>) {
3851                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3852                                 my %set;
3853                                 $set{'file'} = $6;
3854                                 $set{'from_id'} = $3;
3855                                 $set{'to_id'} = $4;
3856                                 $set{'id'} = $set{'to_id'};
3857                                 if ($set{'id'} =~ m/0{40}/) {
3858                                         $set{'id'} = $set{'from_id'};
3859                                 }
3860                                 if ($set{'id'} =~ m/0{40}/) {
3861                                         next;
3862                                 }
3863                                 push @files, \%set;
3864                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3865                                 if (%co) {
3866                                         if ($alternate) {
3867                                                 print "<tr class=\"dark\">\n";
3868                                         } else {
3869                                                 print "<tr class=\"light\">\n";
3870                                         }
3871                                         $alternate ^= 1;
3872                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3873                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3874                                               "<td>" .
3875                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3876                                                       -class => "list subject"},
3877                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3878                                         while (my $setref = shift @files) {
3879                                                 my %set = %$setref;
3880                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3881                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3882                                                               -class => "list"},
3883                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3884                                                       "<br/>\n";
3885                                         }
3886                                         print "</td>\n" .
3887                                               "<td class=\"link\">" .
3888                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3889                                               " | " .
3890                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3891                                         print "</td>\n" .
3892                                               "</tr>\n";
3893                                 }
3894                                 %co = parse_commit($1);
3895                         }
3896                 }
3897                 close $fd;
3898         }
3899         print "</table>\n";
3900         git_footer_html();
3901 }
3902
3903 sub git_search_help {
3904         git_header_html();
3905         git_print_page_nav('','', $hash,$hash,$hash);
3906         print <<EOT;
3907 <dl>
3908 <dt><b>commit</b></dt>
3909 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
3910 <dt><b>author</b></dt>
3911 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
3912 <dt><b>committer</b></dt>
3913 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
3914 EOT
3915         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3916         if ($have_pickaxe) {
3917                 print <<EOT;
3918 <dt><b>pickaxe</b></dt>
3919 <dd>All commits that caused the string to appear or disappear from any file (changes that
3920 added, removed or "modified" the string) will be listed. This search can take a while and
3921 takes a lot of strain on the server, so please use it wisely.</dd>
3922 EOT
3923         }
3924         print "</dl>\n";
3925         git_footer_html();
3926 }
3927
3928 sub git_shortlog {
3929         my $head = git_get_head_hash($project);
3930         if (!defined $hash) {
3931                 $hash = $head;
3932         }
3933         if (!defined $page) {
3934                 $page = 0;
3935         }
3936         my $refs = git_get_references();
3937
3938         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3939         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3940                 or die_error(undef, "Open git-rev-list failed");
3941         my @revlist = map { chomp; $_ } <$fd>;
3942         close $fd;
3943
3944         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3945         my $next_link = '';
3946         if ($#revlist >= (100 * ($page+1)-1)) {
3947                 $next_link =
3948                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3949                                  -title => "Alt-n"}, "next");
3950         }
3951
3952
3953         git_header_html();
3954         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3955         git_print_header_div('summary', $project);
3956
3957         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3958
3959         git_footer_html();
3960 }
3961
3962 ## ......................................................................
3963 ## feeds (RSS, OPML)
3964
3965 sub git_rss {
3966         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3967         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
3968                 git_get_head_hash($project), "--"
3969                 or die_error(undef, "Open git-rev-list failed");
3970         my @revlist = map { chomp; $_ } <$fd>;
3971         close $fd or die_error(undef, "Reading git-rev-list failed");
3972         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3973         print <<XML;
3974 <?xml version="1.0" encoding="utf-8"?>
3975 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3976 <channel>
3977 <title>$project $my_uri $my_url</title>
3978 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3979 <description>$project log</description>
3980 <language>en</language>
3981 XML
3982
3983         for (my $i = 0; $i <= $#revlist; $i++) {
3984                 my $commit = $revlist[$i];
3985                 my %co = parse_commit($commit);
3986                 # we read 150, we always show 30 and the ones more recent than 48 hours
3987                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3988                         last;
3989                 }
3990                 my %cd = parse_date($co{'committer_epoch'});
3991                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3992                         $co{'parent'}, $co{'id'}, "--"
3993                         or next;
3994                 my @difftree = map { chomp; $_ } <$fd>;
3995                 close $fd
3996                         or next;
3997                 print "<item>\n" .
3998                       "<title>" .
3999                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
4000                       "</title>\n" .
4001                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
4002                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4003                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
4004                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
4005                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
4006                       "<content:encoded>" .
4007                       "<![CDATA[\n";
4008                 my $comment = $co{'comment'};
4009                 foreach my $line (@$comment) {
4010                         $line = to_utf8($line);
4011                         print "$line<br/>\n";
4012                 }
4013                 print "<br/>\n";
4014                 foreach my $line (@difftree) {
4015                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
4016                                 next;
4017                         }
4018                         my $file = esc_html(unquote($7));
4019                         $file = to_utf8($file);
4020                         print "$file<br/>\n";
4021                 }
4022                 print "]]>\n" .
4023                       "</content:encoded>\n" .
4024                       "</item>\n";
4025         }
4026         print "</channel></rss>";
4027 }
4028
4029 sub git_opml {
4030         my @list = git_get_projects_list();
4031
4032         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4033         print <<XML;
4034 <?xml version="1.0" encoding="utf-8"?>
4035 <opml version="1.0">
4036 <head>
4037   <title>$site_name OPML Export</title>
4038 </head>
4039 <body>
4040 <outline text="git RSS feeds">
4041 XML
4042
4043         foreach my $pr (@list) {
4044                 my %proj = %$pr;
4045                 my $head = git_get_head_hash($proj{'path'});
4046                 if (!defined $head) {
4047                         next;
4048                 }
4049                 $git_dir = "$projectroot/$proj{'path'}";
4050                 my %co = parse_commit($head);
4051                 if (!%co) {
4052                         next;
4053                 }
4054
4055                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4056                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4057                 my $html = "$my_url?p=$proj{'path'};a=summary";
4058                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4059         }
4060         print <<XML;
4061 </outline>
4062 </body>
4063 </opml>
4064 XML
4065 }