gitweb/gitweb.perl

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