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 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55 our $stylesheet = undef;
  56 # URI of GIT logo (72x27 size)
  57 our $logo = "++GITWEB_LOGO++";
  58 # URI of GIT favicon, assumed to be image/png type
  59 our $favicon = "++GITWEB_FAVICON++";
  60
  61 # URI and label (title) of GIT logo link
  62 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  63 #our $logo_label = "git documentation";
  64 our $logo_url = "http://git.or.cz/";
  65 our $logo_label = "git homepage";
  66
  67 # source of projects list
  68 our $projects_list = "++GITWEB_LIST++";
  69
  70 # show repository only if this file exists
  71 # (only effective if this variable evaluates to true)
  72 our $export_ok = "++GITWEB_EXPORT_OK++";
  73
  74 # only allow viewing of repositories also shown on the overview page
  75 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  76
  77 # list of git base URLs used for URL to where fetch project from,
  78 # i.e. full URL is "$git_base_url/$project"
  79 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  80
  81 # default blob_plain mimetype and default charset for text/plain blob
  82 our $default_blob_plain_mimetype = 'text/plain';
  83 our $default_text_plain_charset  = undef;
  84
  85 # file to use for guessing MIME types before trying /etc/mime.types
  86 # (relative to the current git repository)
  87 our $mimetypes_file = undef;
  88
  89 # You define site-wide feature defaults here; override them with
  90 # $GITWEB_CONFIG as necessary.
  91 our %feature = (
  92         # feature => {
  93         #       'sub' => feature-sub (subroutine),
  94         #       'override' => allow-override (boolean),
  95         #       'default' => [ default options...] (array reference)}
  96         #
  97         # if feature is overridable (it means that allow-override has true value,
  98         # then feature-sub will be called with default options as parameters;
  99         # return value of feature-sub indicates if to enable specified feature
 100         #
 101         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 102
 103         # Enable the 'blame' blob view, showing the last commit that modified
 104         # each line in the file. This can be very CPU-intensive.
 105
 106         # To enable system wide have in $GITWEB_CONFIG
 107         # $feature{'blame'}{'default'} = [1];
 108         # To have project specific config enable override in $GITWEB_CONFIG
 109         # $feature{'blame'}{'override'} = 1;
 110         # and in project config gitweb.blame = 0|1;
 111         'blame' => {
 112                 'sub' => \&feature_blame,
 113                 'override' => 0,
 114                 'default' => [0]},
 115
 116         # Enable the 'snapshot' link, providing a compressed tarball of any
 117         # tree. This can potentially generate high traffic if you have large
 118         # project.
 119
 120         # To disable system wide have in $GITWEB_CONFIG
 121         # $feature{'snapshot'}{'default'} = [undef];
 122         # To have project specific config enable override in $GITWEB_CONFIG
 123         # $feature{'snapshot'}{'override'} = 1;
 124         # and in project config gitweb.snapshot = none|gzip|bzip2;
 125         'snapshot' => {
 126                 'sub' => \&feature_snapshot,
 127                 'override' => 0,
 128                 #         => [content-encoding, suffix, program]
 129                 'default' => ['x-gzip', 'gz', 'gzip']},
 130
 131         # Enable text search, which will list the commits which match author,
 132         # committer or commit text to a given string.  Enabled by default.
 133         'search' => {
 134                 'override' => 0,
 135                 'default' => [1]},
 136
 137         # Enable the pickaxe search, which will list the commits that modified
 138         # a given string in a file. This can be practical and quite faster
 139         # alternative to 'blame', but still potentially CPU-intensive.
 140
 141         # To enable system wide have in $GITWEB_CONFIG
 142         # $feature{'pickaxe'}{'default'} = [1];
 143         # To have project specific config enable override in $GITWEB_CONFIG
 144         # $feature{'pickaxe'}{'override'} = 1;
 145         # and in project config gitweb.pickaxe = 0|1;
 146         'pickaxe' => {
 147                 'sub' => \&feature_pickaxe,
 148                 'override' => 0,
 149                 'default' => [1]},
 150
 151         # Make gitweb use an alternative format of the URLs which can be
 152         # more readable and natural-looking: project name is embedded
 153         # directly in the path and the query string contains other
 154         # auxiliary information. All gitweb installations recognize
 155         # URL in either format; this configures in which formats gitweb
 156         # generates links.
 157
 158         # To enable system wide have in $GITWEB_CONFIG
 159         # $feature{'pathinfo'}{'default'} = [1];
 160         # Project specific override is not supported.
 161
 162         # Note that you will need to change the default location of CSS,
 163         # favicon, logo and possibly other files to an absolute URL. Also,
 164         # if gitweb.cgi serves as your indexfile, you will need to force
 165         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 166         'pathinfo' => {
 167                 'override' => 0,
 168                 'default' => [0]},
 169
 170         # Make gitweb consider projects in project root subdirectories
 171         # to be forks of existing projects. Given project $projname.git,
 172         # projects matching $projname/*.git will not be shown in the main
 173         # projects list, instead a '+' mark will be added to $projname
 174         # there and a 'forks' view will be enabled for the project, listing
 175         # all the forks. This feature is supported only if project list
 176         # is taken from a directory, not file.
 177
 178         # To enable system wide have in $GITWEB_CONFIG
 179         # $feature{'forks'}{'default'} = [1];
 180         # Project specific override is not supported.
 181         'forks' => {
 182                 'override' => 0,
 183                 'default' => [0]},
 184 );
 185
 186 sub gitweb_check_feature {
 187         my ($name) = @_;
 188         return unless exists $feature{$name};
 189         my ($sub, $override, @defaults) = (
 190                 $feature{$name}{'sub'},
 191                 $feature{$name}{'override'},
 192                 @{$feature{$name}{'default'}});
 193         if (!$override) { return @defaults; }
 194         if (!defined $sub) {
 195                 warn "feature $name is not overrideable";
 196                 return @defaults;
 197         }
 198         return $sub->(@defaults);
 199 }
 200
 201 sub feature_blame {
 202         my ($val) = git_get_project_config('blame', '--bool');
 203
 204         if ($val eq 'true') {
 205                 return 1;
 206         } elsif ($val eq 'false') {
 207                 return 0;
 208         }
 209
 210         return $_[0];
 211 }
 212
 213 sub feature_snapshot {
 214         my ($ctype, $suffix, $command) = @_;
 215
 216         my ($val) = git_get_project_config('snapshot');
 217
 218         if ($val eq 'gzip') {
 219                 return ('x-gzip', 'gz', 'gzip');
 220         } elsif ($val eq 'bzip2') {
 221                 return ('x-bzip2', 'bz2', 'bzip2');
 222         } elsif ($val eq 'none') {
 223                 return ();
 224         }
 225
 226         return ($ctype, $suffix, $command);
 227 }
 228
 229 sub gitweb_have_snapshot {
 230         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 231         my $have_snapshot = (defined $ctype && defined $suffix);
 232
 233         return $have_snapshot;
 234 }
 235
 236 sub feature_pickaxe {
 237         my ($val) = git_get_project_config('pickaxe', '--bool');
 238
 239         if ($val eq 'true') {
 240                 return (1);
 241         } elsif ($val eq 'false') {
 242                 return (0);
 243         }
 244
 245         return ($_[0]);
 246 }
 247
 248 # checking HEAD file with -e is fragile if the repository was
 249 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 250 # and then pruned.
 251 sub check_head_link {
 252         my ($dir) = @_;
 253         my $headfile = "$dir/HEAD";
 254         return ((-e $headfile) ||
 255                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 256 }
 257
 258 sub check_export_ok {
 259         my ($dir) = @_;
 260         return (check_head_link($dir) &&
 261                 (!$export_ok || -e "$dir/$export_ok"));
 262 }
 263
 264 # rename detection options for git-diff and git-diff-tree
 265 # - default is '-M', with the cost proportional to
 266 #   (number of removed files) * (number of new files).
 267 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 268 #   (number of changed files + number of removed files) * (number of new files)
 269 # - even more costly is '-C', '--find-copies-harder' with cost
 270 #   (number of files in the original tree) * (number of new files)
 271 # - one might want to include '-B' option, e.g. '-B', '-M'
 272 our @diff_opts = ('-M'); # taken from git_commit
 273
 274 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 275 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 276
 277 # version of the core git binary
 278 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 279
 280 $projects_list ||= $projectroot;
 281
 282 # ======================================================================
 283 # input validation and dispatch
 284 our $action = $cgi->param('a');
 285 if (defined $action) {
 286         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 287                 die_error(undef, "Invalid action parameter");
 288         }
 289 }
 290
 291 # parameters which are pathnames
 292 our $project = $cgi->param('p');
 293 if (defined $project) {
 294         if (!validate_pathname($project) ||
 295             !(-d "$projectroot/$project") ||
 296             !check_head_link("$projectroot/$project") ||
 297             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 298             ($strict_export && !project_in_list($project))) {
 299                 undef $project;
 300                 die_error(undef, "No such project");
 301         }
 302 }
 303
 304 our $file_name = $cgi->param('f');
 305 if (defined $file_name) {
 306         if (!validate_pathname($file_name)) {
 307                 die_error(undef, "Invalid file parameter");
 308         }
 309 }
 310
 311 our $file_parent = $cgi->param('fp');
 312 if (defined $file_parent) {
 313         if (!validate_pathname($file_parent)) {
 314                 die_error(undef, "Invalid file parent parameter");
 315         }
 316 }
 317
 318 # parameters which are refnames
 319 our $hash = $cgi->param('h');
 320 if (defined $hash) {
 321         if (!validate_refname($hash)) {
 322                 die_error(undef, "Invalid hash parameter");
 323         }
 324 }
 325
 326 our $hash_parent = $cgi->param('hp');
 327 if (defined $hash_parent) {
 328         if (!validate_refname($hash_parent)) {
 329                 die_error(undef, "Invalid hash parent parameter");
 330         }
 331 }
 332
 333 our $hash_base = $cgi->param('hb');
 334 if (defined $hash_base) {
 335         if (!validate_refname($hash_base)) {
 336                 die_error(undef, "Invalid hash base parameter");
 337         }
 338 }
 339
 340 our $hash_parent_base = $cgi->param('hpb');
 341 if (defined $hash_parent_base) {
 342         if (!validate_refname($hash_parent_base)) {
 343                 die_error(undef, "Invalid hash parent base parameter");
 344         }
 345 }
 346
 347 # other parameters
 348 our $page = $cgi->param('pg');
 349 if (defined $page) {
 350         if ($page =~ m/[^0-9]/) {
 351                 die_error(undef, "Invalid page parameter");
 352         }
 353 }
 354
 355 our $searchtext = $cgi->param('s');
 356 if (defined $searchtext) {
 357         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 358                 die_error(undef, "Invalid search parameter");
 359         }
 360         if (length($searchtext) < 2) {
 361                 die_error(undef, "At least two characters are required for search parameter");
 362         }
 363         $searchtext = quotemeta $searchtext;
 364 }
 365
 366 our $searchtype = $cgi->param('st');
 367 if (defined $searchtype) {
 368         if ($searchtype =~ m/[^a-z]/) {
 369                 die_error(undef, "Invalid searchtype parameter");
 370         }
 371 }
 372
 373 # now read PATH_INFO and use it as alternative to parameters
 374 sub evaluate_path_info {
 375         return if defined $project;
 376         my $path_info = $ENV{"PATH_INFO"};
 377         return if !$path_info;
 378         $path_info =~ s,^/+,,;
 379         return if !$path_info;
 380         # find which part of PATH_INFO is project
 381         $project = $path_info;
 382         $project =~ s,/+$,,;
 383         while ($project && !check_head_link("$projectroot/$project")) {
 384                 $project =~ s,/*[^/]*$,,;
 385         }
 386         # validate project
 387         $project = validate_pathname($project);
 388         if (!$project ||
 389             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 390             ($strict_export && !project_in_list($project))) {
 391                 undef $project;
 392                 return;
 393         }
 394         # do not change any parameters if an action is given using the query string
 395         return if $action;
 396         $path_info =~ s,^$project/*,,;
 397         my ($refname, $pathname) = split(/:/, $path_info, 2);
 398         if (defined $pathname) {
 399                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 400                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 401                 $pathname =~ s,^/+,,;
 402                 if (!$pathname || substr($pathname, -1) eq "/") {
 403                         $action  ||= "tree";
 404                         $pathname =~ s,/$,,;
 405                 } else {
 406                         $action  ||= "blob_plain";
 407                 }
 408                 $hash_base ||= validate_refname($refname);
 409                 $file_name ||= validate_pathname($pathname);
 410         } elsif (defined $refname) {
 411                 # we got "project.git/branch"
 412                 $action ||= "shortlog";
 413                 $hash   ||= validate_refname($refname);
 414         }
 415 }
 416 evaluate_path_info();
 417
 418 # path to the current git repository
 419 our $git_dir;
 420 $git_dir = "$projectroot/$project" if $project;
 421
 422 # dispatch
 423 my %actions = (
 424         "blame" => \&git_blame2,
 425         "blobdiff" => \&git_blobdiff,
 426         "blobdiff_plain" => \&git_blobdiff_plain,
 427         "blob" => \&git_blob,
 428         "blob_plain" => \&git_blob_plain,
 429         "commitdiff" => \&git_commitdiff,
 430         "commitdiff_plain" => \&git_commitdiff_plain,
 431         "commit" => \&git_commit,
 432         "forks" => \&git_forks,
 433         "heads" => \&git_heads,
 434         "history" => \&git_history,
 435         "log" => \&git_log,
 436         "rss" => \&git_rss,
 437         "atom" => \&git_atom,
 438         "search" => \&git_search,
 439         "search_help" => \&git_search_help,
 440         "shortlog" => \&git_shortlog,
 441         "summary" => \&git_summary,
 442         "tag" => \&git_tag,
 443         "tags" => \&git_tags,
 444         "tree" => \&git_tree,
 445         "snapshot" => \&git_snapshot,
 446         "object" => \&git_object,
 447         # those below don't need $project
 448         "opml" => \&git_opml,
 449         "project_list" => \&git_project_list,
 450         "project_index" => \&git_project_index,
 451 );
 452
 453 if (defined $project) {
 454         $action ||= 'summary';
 455 } else {
 456         $action ||= 'project_list';
 457 }
 458 if (!defined($actions{$action})) {
 459         die_error(undef, "Unknown action");
 460 }
 461 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 462     !$project) {
 463         die_error(undef, "Project needed");
 464 }
 465 $actions{$action}->();
 466 exit;
 467
 468 ## ======================================================================
 469 ## action links
 470
 471 sub href(%) {
 472         my %params = @_;
 473         # default is to use -absolute url() i.e. $my_uri
 474         my $href = $params{-full} ? $my_url : $my_uri;
 475
 476         # XXX: Warning: If you touch this, check the search form for updating,
 477         # too.
 478
 479         my @mapping = (
 480                 project => "p",
 481                 action => "a",
 482                 file_name => "f",
 483                 file_parent => "fp",
 484                 hash => "h",
 485                 hash_parent => "hp",
 486                 hash_base => "hb",
 487                 hash_parent_base => "hpb",
 488                 page => "pg",
 489                 order => "o",
 490                 searchtext => "s",
 491                 searchtype => "st",
 492         );
 493         my %mapping = @mapping;
 494
 495         $params{'project'} = $project unless exists $params{'project'};
 496
 497         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 498         if ($use_pathinfo) {
 499                 # use PATH_INFO for project name
 500                 $href .= "/$params{'project'}" if defined $params{'project'};
 501                 delete $params{'project'};
 502
 503                 # Summary just uses the project path URL
 504                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 505                         delete $params{'action'};
 506                 }
 507         }
 508
 509         # now encode the parameters explicitly
 510         my @result = ();
 511         for (my $i = 0; $i < @mapping; $i += 2) {
 512                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 513                 if (defined $params{$name}) {
 514                         push @result, $symbol . "=" . esc_param($params{$name});
 515                 }
 516         }
 517         $href .= "?" . join(';', @result) if scalar @result;
 518
 519         return $href;
 520 }
 521
 522
 523 ## ======================================================================
 524 ## validation, quoting/unquoting and escaping
 525
 526 sub validate_pathname {
 527         my $input = shift || return undef;
 528
 529         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 530         # at the beginning, at the end, and between slashes.
 531         # also this catches doubled slashes
 532         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 533                 return undef;
 534         }
 535         # no null characters
 536         if ($input =~ m!\0!) {
 537                 return undef;
 538         }
 539         return $input;
 540 }
 541
 542 sub validate_refname {
 543         my $input = shift || return undef;
 544
 545         # textual hashes are O.K.
 546         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 547                 return $input;
 548         }
 549         # it must be correct pathname
 550         $input = validate_pathname($input)
 551                 or return undef;
 552         # restrictions on ref name according to git-check-ref-format
 553         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 554                 return undef;
 555         }
 556         return $input;
 557 }
 558
 559 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 560 sub to_utf8 {
 561         my $str = shift;
 562         return decode("utf8", $str, Encode::FB_DEFAULT);
 563 }
 564
 565 # quote unsafe chars, but keep the slash, even when it's not
 566 # correct, but quoted slashes look too horrible in bookmarks
 567 sub esc_param {
 568         my $str = shift;
 569         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 570         $str =~ s/\+/%2B/g;
 571         $str =~ s/ /\+/g;
 572         return $str;
 573 }
 574
 575 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 576 sub esc_url {
 577         my $str = shift;
 578         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 579         $str =~ s/\+/%2B/g;
 580         $str =~ s/ /\+/g;
 581         return $str;
 582 }
 583
 584 # replace invalid utf8 character with SUBSTITUTION sequence
 585 sub esc_html ($;%) {
 586         my $str = shift;
 587         my %opts = @_;
 588
 589         $str = to_utf8($str);
 590         $str = escapeHTML($str);
 591         if ($opts{'-nbsp'}) {
 592                 $str =~ s/ /&nbsp;/g;
 593         }
 594         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 595         return $str;
 596 }
 597
 598 # quote control characters and escape filename to HTML
 599 sub esc_path {
 600         my $str = shift;
 601         my %opts = @_;
 602
 603         $str = to_utf8($str);
 604         $str = escapeHTML($str);
 605         if ($opts{'-nbsp'}) {
 606                 $str =~ s/ /&nbsp;/g;
 607         }
 608         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 609         return $str;
 610 }
 611
 612 # Make control characters "printable", using character escape codes (CEC)
 613 sub quot_cec {
 614         my $cntrl = shift;
 615         my %es = ( # character escape codes, aka escape sequences
 616                    "\t" => '\t',   # tab            (HT)
 617                    "\n" => '\n',   # line feed      (LF)
 618                    "\r" => '\r',   # carrige return (CR)
 619                    "\f" => '\f',   # form feed      (FF)
 620                    "\b" => '\b',   # backspace      (BS)
 621                    "\a" => '\a',   # alarm (bell)   (BEL)
 622                    "\e" => '\e',   # escape         (ESC)
 623                    "\013" => '\v', # vertical tab   (VT)
 624                    "\000" => '\0', # nul character  (NUL)
 625                    );
 626         my $chr = ( (exists $es{$cntrl})
 627                     ? $es{$cntrl}
 628                     : sprintf('\%03o', ord($cntrl)) );
 629         return "<span class=\"cntrl\">$chr</span>";
 630 }
 631
 632 # Alternatively use unicode control pictures codepoints,
 633 # Unicode "printable representation" (PR)
 634 sub quot_upr {
 635         my $cntrl = shift;
 636         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 637         return "<span class=\"cntrl\">$chr</span>";
 638 }
 639
 640 # git may return quoted and escaped filenames
 641 sub unquote {
 642         my $str = shift;
 643
 644         sub unq {
 645                 my $seq = shift;
 646                 my %es = ( # character escape codes, aka escape sequences
 647                         't' => "\t",   # tab            (HT, TAB)
 648                         'n' => "\n",   # newline        (NL)
 649                         'r' => "\r",   # return         (CR)
 650                         'f' => "\f",   # form feed      (FF)
 651                         'b' => "\b",   # backspace      (BS)
 652                         'a' => "\a",   # alarm (bell)   (BEL)
 653                         'e' => "\e",   # escape         (ESC)
 654                         'v' => "\013", # vertical tab   (VT)
 655                 );
 656
 657                 if ($seq =~ m/^[0-7]{1,3}$/) {
 658                         # octal char sequence
 659                         return chr(oct($seq));
 660                 } elsif (exists $es{$seq}) {
 661                         # C escape sequence, aka character escape code
 662                         return $es{$seq}
 663                 }
 664                 # quoted ordinary character
 665                 return $seq;
 666         }
 667
 668         if ($str =~ m/^"(.*)"$/) {
 669                 # needs unquoting
 670                 $str = $1;
 671                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 672         }
 673         return $str;
 674 }
 675
 676 # escape tabs (convert tabs to spaces)
 677 sub untabify {
 678         my $line = shift;
 679
 680         while ((my $pos = index($line, "\t")) != -1) {
 681                 if (my $count = (8 - ($pos % 8))) {
 682                         my $spaces = ' ' x $count;
 683                         $line =~ s/\t/$spaces/;
 684                 }
 685         }
 686
 687         return $line;
 688 }
 689
 690 sub project_in_list {
 691         my $project = shift;
 692         my @list = git_get_projects_list();
 693         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 694 }
 695
 696 ## ----------------------------------------------------------------------
 697 ## HTML aware string manipulation
 698
 699 sub chop_str {
 700         my $str = shift;
 701         my $len = shift;
 702         my $add_len = shift || 10;
 703
 704         # allow only $len chars, but don't cut a word if it would fit in $add_len
 705         # if it doesn't fit, cut it if it's still longer than the dots we would add
 706         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 707         my $body = $1;
 708         my $tail = $2;
 709         if (length($tail) > 4) {
 710                 $tail = " ...";
 711                 $body =~ s/&[^;]*$//; # remove chopped character entities
 712         }
 713         return "$body$tail";
 714 }
 715
 716 ## ----------------------------------------------------------------------
 717 ## functions returning short strings
 718
 719 # CSS class for given age value (in seconds)
 720 sub age_class {
 721         my $age = shift;
 722
 723         if ($age < 60*60*2) {
 724                 return "age0";
 725         } elsif ($age < 60*60*24*2) {
 726                 return "age1";
 727         } else {
 728                 return "age2";
 729         }
 730 }
 731
 732 # convert age in seconds to "nn units ago" string
 733 sub age_string {
 734         my $age = shift;
 735         my $age_str;
 736
 737         if ($age > 60*60*24*365*2) {
 738                 $age_str = (int $age/60/60/24/365);
 739                 $age_str .= " years ago";
 740         } elsif ($age > 60*60*24*(365/12)*2) {
 741                 $age_str = int $age/60/60/24/(365/12);
 742                 $age_str .= " months ago";
 743         } elsif ($age > 60*60*24*7*2) {
 744                 $age_str = int $age/60/60/24/7;
 745                 $age_str .= " weeks ago";
 746         } elsif ($age > 60*60*24*2) {
 747                 $age_str = int $age/60/60/24;
 748                 $age_str .= " days ago";
 749         } elsif ($age > 60*60*2) {
 750                 $age_str = int $age/60/60;
 751                 $age_str .= " hours ago";
 752         } elsif ($age > 60*2) {
 753                 $age_str = int $age/60;
 754                 $age_str .= " min ago";
 755         } elsif ($age > 2) {
 756                 $age_str = int $age;
 757                 $age_str .= " sec ago";
 758         } else {
 759                 $age_str .= " right now";
 760         }
 761         return $age_str;
 762 }
 763
 764 # convert file mode in octal to symbolic file mode string
 765 sub mode_str {
 766         my $mode = oct shift;
 767
 768         if (S_ISDIR($mode & S_IFMT)) {
 769                 return 'drwxr-xr-x';
 770         } elsif (S_ISLNK($mode)) {
 771                 return 'lrwxrwxrwx';
 772         } elsif (S_ISREG($mode)) {
 773                 # git cares only about the executable bit
 774                 if ($mode & S_IXUSR) {
 775                         return '-rwxr-xr-x';
 776                 } else {
 777                         return '-rw-r--r--';
 778                 };
 779         } else {
 780                 return '----------';
 781         }
 782 }
 783
 784 # convert file mode in octal to file type string
 785 sub file_type {
 786         my $mode = shift;
 787
 788         if ($mode !~ m/^[0-7]+$/) {
 789                 return $mode;
 790         } else {
 791                 $mode = oct $mode;
 792         }
 793
 794         if (S_ISDIR($mode & S_IFMT)) {
 795                 return "directory";
 796         } elsif (S_ISLNK($mode)) {
 797                 return "symlink";
 798         } elsif (S_ISREG($mode)) {
 799                 return "file";
 800         } else {
 801                 return "unknown";
 802         }
 803 }
 804
 805 # convert file mode in octal to file type description string
 806 sub file_type_long {
 807         my $mode = shift;
 808
 809         if ($mode !~ m/^[0-7]+$/) {
 810                 return $mode;
 811         } else {
 812                 $mode = oct $mode;
 813         }
 814
 815         if (S_ISDIR($mode & S_IFMT)) {
 816                 return "directory";
 817         } elsif (S_ISLNK($mode)) {
 818                 return "symlink";
 819         } elsif (S_ISREG($mode)) {
 820                 if ($mode & S_IXUSR) {
 821                         return "executable";
 822                 } else {
 823                         return "file";
 824                 };
 825         } else {
 826                 return "unknown";
 827         }
 828 }
 829
 830
 831 ## ----------------------------------------------------------------------
 832 ## functions returning short HTML fragments, or transforming HTML fragments
 833 ## which don't beling to other sections
 834
 835 # format line of commit message.
 836 sub format_log_line_html {
 837         my $line = shift;
 838
 839         $line = esc_html($line, -nbsp=>1);
 840         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 841                 my $hash_text = $1;
 842                 my $link =
 843                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 844                                 -class => "text"}, $hash_text);
 845                 $line =~ s/$hash_text/$link/;
 846         }
 847         return $line;
 848 }
 849
 850 # format marker of refs pointing to given object
 851 sub format_ref_marker {
 852         my ($refs, $id) = @_;
 853         my $markers = '';
 854
 855         if (defined $refs->{$id}) {
 856                 foreach my $ref (@{$refs->{$id}}) {
 857                         my ($type, $name) = qw();
 858                         # e.g. tags/v2.6.11 or heads/next
 859                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 860                                 $type = $1;
 861                                 $name = $2;
 862                         } else {
 863                                 $type = "ref";
 864                                 $name = $ref;
 865                         }
 866
 867                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 868                                     esc_html($name) . "</span>";
 869                 }
 870         }
 871
 872         if ($markers) {
 873                 return ' <span class="refs">'. $markers . '</span>';
 874         } else {
 875                 return "";
 876         }
 877 }
 878
 879 # format, perhaps shortened and with markers, title line
 880 sub format_subject_html {
 881         my ($long, $short, $href, $extra) = @_;
 882         $extra = '' unless defined($extra);
 883
 884         if (length($short) < length($long)) {
 885                 return $cgi->a({-href => $href, -class => "list subject",
 886                                 -title => to_utf8($long)},
 887                        esc_html($short) . $extra);
 888         } else {
 889                 return $cgi->a({-href => $href, -class => "list subject"},
 890                        esc_html($long)  . $extra);
 891         }
 892 }
 893
 894 # format patch (diff) line (rather not to be used for diff headers)
 895 sub format_diff_line {
 896         my $line = shift;
 897         my ($from, $to) = @_;
 898         my $char = substr($line, 0, 1);
 899         my $diff_class = "";
 900
 901         chomp $line;
 902
 903         if ($char eq '+') {
 904                 $diff_class = " add";
 905         } elsif ($char eq "-") {
 906                 $diff_class = " rem";
 907         } elsif ($char eq "@") {
 908                 $diff_class = " chunk_header";
 909         } elsif ($char eq "\\") {
 910                 $diff_class = " incomplete";
 911         }
 912         $line = untabify($line);
 913         if ($from && $to && $line =~ m/^\@{2} /) {
 914                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 915                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 916
 917                 $from_lines = 0 unless defined $from_lines;
 918                 $to_lines   = 0 unless defined $to_lines;
 919
 920                 if ($from->{'href'}) {
 921                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 922                                              -class=>"list"}, $from_text);
 923                 }
 924                 if ($to->{'href'}) {
 925                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 926                                              -class=>"list"}, $to_text);
 927                 }
 928                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 929                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 930                 return "<div class=\"diff$diff_class\">$line</div>\n";
 931         }
 932         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 933 }
 934
 935 ## ----------------------------------------------------------------------
 936 ## git utility subroutines, invoking git commands
 937
 938 # returns path to the core git executable and the --git-dir parameter as list
 939 sub git_cmd {
 940         return $GIT, '--git-dir='.$git_dir;
 941 }
 942
 943 # returns path to the core git executable and the --git-dir parameter as string
 944 sub git_cmd_str {
 945         return join(' ', git_cmd());
 946 }
 947
 948 # get HEAD ref of given project as hash
 949 sub git_get_head_hash {
 950         my $project = shift;
 951         my $o_git_dir = $git_dir;
 952         my $retval = undef;
 953         $git_dir = "$projectroot/$project";
 954         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 955                 my $head = <$fd>;
 956                 close $fd;
 957                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 958                         $retval = $1;
 959                 }
 960         }
 961         if (defined $o_git_dir) {
 962                 $git_dir = $o_git_dir;
 963         }
 964         return $retval;
 965 }
 966
 967 # get type of given object
 968 sub git_get_type {
 969         my $hash = shift;
 970
 971         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 972         my $type = <$fd>;
 973         close $fd or return;
 974         chomp $type;
 975         return $type;
 976 }
 977
 978 sub git_get_project_config {
 979         my ($key, $type) = @_;
 980
 981         return unless ($key);
 982         $key =~ s/^gitweb\.//;
 983         return if ($key =~ m/\W/);
 984
 985         my @x = (git_cmd(), 'repo-config');
 986         if (defined $type) { push @x, $type; }
 987         push @x, "--get";
 988         push @x, "gitweb.$key";
 989         my $val = qx(@x);
 990         chomp $val;
 991         return ($val);
 992 }
 993
 994 # get hash of given path at given ref
 995 sub git_get_hash_by_path {
 996         my $base = shift;
 997         my $path = shift || return undef;
 998         my $type = shift;
 999
1000         $path =~ s,/+$,,;
1001
1002         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1003                 or die_error(undef, "Open git-ls-tree failed");
1004         my $line = <$fd>;
1005         close $fd or return undef;
1006
1007         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1008         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1009         if (defined $type && $type ne $2) {
1010                 # type doesn't match
1011                 return undef;
1012         }
1013         return $3;
1014 }
1015
1016 ## ......................................................................
1017 ## git utility functions, directly accessing git repository
1018
1019 sub git_get_project_description {
1020         my $path = shift;
1021
1022         open my $fd, "$projectroot/$path/description" or return undef;
1023         my $descr = <$fd>;
1024         close $fd;
1025         chomp $descr;
1026         return $descr;
1027 }
1028
1029 sub git_get_project_url_list {
1030         my $path = shift;
1031
1032         open my $fd, "$projectroot/$path/cloneurl" or return;
1033         my @git_project_url_list = map { chomp; $_ } <$fd>;
1034         close $fd;
1035
1036         return wantarray ? @git_project_url_list : \@git_project_url_list;
1037 }
1038
1039 sub git_get_projects_list {
1040         my ($filter) = @_;
1041         my @list;
1042
1043         $filter ||= '';
1044         $filter =~ s/\.git$//;
1045
1046         if (-d $projects_list) {
1047                 # search in directory
1048                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1049                 # remove the trailing "/"
1050                 $dir =~ s!/+$!!;
1051                 my $pfxlen = length("$dir");
1052
1053                 my ($check_forks) = gitweb_check_feature('forks');
1054
1055                 File::Find::find({
1056                         follow_fast => 1, # follow symbolic links
1057                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1058                         wanted => sub {
1059                                 # skip project-list toplevel, if we get it.
1060                                 return if (m!^[/.]$!);
1061                                 # only directories can be git repositories
1062                                 return unless (-d $_);
1063
1064                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1065                                 # we check related file in $projectroot
1066                                 if ($check_forks and $subdir =~ m#/.#) {
1067                                         $File::Find::prune = 1;
1068                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1069                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1070                                         $File::Find::prune = 1;
1071                                 }
1072                         },
1073                 }, "$dir");
1074
1075         } elsif (-f $projects_list) {
1076                 # read from file(url-encoded):
1077                 # 'git%2Fgit.git Linus+Torvalds'
1078                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1079                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1080                 open my ($fd), $projects_list or return;
1081                 while (my $line = <$fd>) {
1082                         chomp $line;
1083                         my ($path, $owner) = split ' ', $line;
1084                         $path = unescape($path);
1085                         $owner = unescape($owner);
1086                         if (!defined $path) {
1087                                 next;
1088                         }
1089                         if ($filter ne '') {
1090                                 # looking for forks;
1091                                 my $pfx = substr($path, 0, length($filter));
1092                                 if ($pfx ne $filter) {
1093                                         next;
1094                                 }
1095                                 my $sfx = substr($path, length($filter));
1096                                 if ($sfx !~ /^\/.*\.git$/) {
1097                                         next;
1098                                 }
1099                         }
1100                         if (check_export_ok("$projectroot/$path")) {
1101                                 my $pr = {
1102                                         path => $path,
1103                                         owner => to_utf8($owner),
1104                                 };
1105                                 push @list, $pr
1106                         }
1107                 }
1108                 close $fd;
1109         }
1110         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1111         return @list;
1112 }
1113
1114 sub git_get_project_owner {
1115         my $project = shift;
1116         my $owner;
1117
1118         return undef unless $project;
1119
1120         # read from file (url-encoded):
1121         # 'git%2Fgit.git Linus+Torvalds'
1122         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1123         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1124         if (-f $projects_list) {
1125                 open (my $fd , $projects_list);
1126                 while (my $line = <$fd>) {
1127                         chomp $line;
1128                         my ($pr, $ow) = split ' ', $line;
1129                         $pr = unescape($pr);
1130                         $ow = unescape($ow);
1131                         if ($pr eq $project) {
1132                                 $owner = to_utf8($ow);
1133                                 last;
1134                         }
1135                 }
1136                 close $fd;
1137         }
1138         if (!defined $owner) {
1139                 $owner = get_file_owner("$projectroot/$project");
1140         }
1141
1142         return $owner;
1143 }
1144
1145 sub git_get_last_activity {
1146         my ($path) = @_;
1147         my $fd;
1148
1149         $git_dir = "$projectroot/$path";
1150         open($fd, "-|", git_cmd(), 'for-each-ref',
1151              '--format=%(committer)',
1152              '--sort=-committerdate',
1153              '--count=1',
1154              'refs/heads') or return;
1155         my $most_recent = <$fd>;
1156         close $fd or return;
1157         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1158                 my $timestamp = $1;
1159                 my $age = time - $timestamp;
1160                 return ($age, age_string($age));
1161         }
1162 }
1163
1164 sub git_get_references {
1165         my $type = shift || "";
1166         my %refs;
1167         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1168         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1169         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1170                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1171                 or return;
1172
1173         while (my $line = <$fd>) {
1174                 chomp $line;
1175                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1176                         if (defined $refs{$1}) {
1177                                 push @{$refs{$1}}, $2;
1178                         } else {
1179                                 $refs{$1} = [ $2 ];
1180                         }
1181                 }
1182         }
1183         close $fd or return;
1184         return \%refs;
1185 }
1186
1187 sub git_get_rev_name_tags {
1188         my $hash = shift || return undef;
1189
1190         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1191                 or return;
1192         my $name_rev = <$fd>;
1193         close $fd;
1194
1195         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1196                 return $1;
1197         } else {
1198                 # catches also '$hash undefined' output
1199                 return undef;
1200         }
1201 }
1202
1203 ## ----------------------------------------------------------------------
1204 ## parse to hash functions
1205
1206 sub parse_date {
1207         my $epoch = shift;
1208         my $tz = shift || "-0000";
1209
1210         my %date;
1211         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1212         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1213         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1214         $date{'hour'} = $hour;
1215         $date{'minute'} = $min;
1216         $date{'mday'} = $mday;
1217         $date{'day'} = $days[$wday];
1218         $date{'month'} = $months[$mon];
1219         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1220                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1221         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1222                              $mday, $months[$mon], $hour ,$min;
1223         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1224                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1225
1226         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1227         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1228         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1229         $date{'hour_local'} = $hour;
1230         $date{'minute_local'} = $min;
1231         $date{'tz_local'} = $tz;
1232         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1233                                   1900+$year, $mon+1, $mday,
1234                                   $hour, $min, $sec, $tz);
1235         return %date;
1236 }
1237
1238 sub parse_tag {
1239         my $tag_id = shift;
1240         my %tag;
1241         my @comment;
1242
1243         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1244         $tag{'id'} = $tag_id;
1245         while (my $line = <$fd>) {
1246                 chomp $line;
1247                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1248                         $tag{'object'} = $1;
1249                 } elsif ($line =~ m/^type (.+)$/) {
1250                         $tag{'type'} = $1;
1251                 } elsif ($line =~ m/^tag (.+)$/) {
1252                         $tag{'name'} = $1;
1253                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1254                         $tag{'author'} = $1;
1255                         $tag{'epoch'} = $2;
1256                         $tag{'tz'} = $3;
1257                 } elsif ($line =~ m/--BEGIN/) {
1258                         push @comment, $line;
1259                         last;
1260                 } elsif ($line eq "") {
1261                         last;
1262                 }
1263         }
1264         push @comment, <$fd>;
1265         $tag{'comment'} = \@comment;
1266         close $fd or return;
1267         if (!defined $tag{'name'}) {
1268                 return
1269         };
1270         return %tag
1271 }
1272
1273 sub parse_commit_text {
1274         my ($commit_text) = @_;
1275         my @commit_lines = split '\n', $commit_text;
1276         my %co;
1277
1278         pop @commit_lines; # Remove '\0'
1279
1280         my $header = shift @commit_lines;
1281         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1282                 return;
1283         }
1284         $co{'id'} = $header;
1285         my @parents;
1286         while (my $line = shift @commit_lines) {
1287                 last if $line eq "\n";
1288                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1289                         $co{'tree'} = $1;
1290                 } elsif ($line =~ m/^parent ([0-9a-fA-F]{40})$/) {
1291                         push @parents, $1;
1292                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1293                         $co{'author'} = $1;
1294                         $co{'author_epoch'} = $2;
1295                         $co{'author_tz'} = $3;
1296                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1297                                 $co{'author_name'}  = $1;
1298                                 $co{'author_email'} = $2;
1299                         } else {
1300                                 $co{'author_name'} = $co{'author'};
1301                         }
1302                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1303                         $co{'committer'} = $1;
1304                         $co{'committer_epoch'} = $2;
1305                         $co{'committer_tz'} = $3;
1306                         $co{'committer_name'} = $co{'committer'};
1307                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1308                                 $co{'committer_name'}  = $1;
1309                                 $co{'committer_email'} = $2;
1310                         } else {
1311                                 $co{'committer_name'} = $co{'committer'};
1312                         }
1313                 }
1314         }
1315         if (!defined $co{'tree'}) {
1316                 return;
1317         };
1318         $co{'parents'} = \@parents;
1319         $co{'parent'} = $parents[0];
1320
1321         foreach my $title (@commit_lines) {
1322                 $title =~ s/^    //;
1323                 if ($title ne "") {
1324                         $co{'title'} = chop_str($title, 80, 5);
1325                         # remove leading stuff of merges to make the interesting part visible
1326                         if (length($title) > 50) {
1327                                 $title =~ s/^Automatic //;
1328                                 $title =~ s/^merge (of|with) /Merge ... /i;
1329                                 if (length($title) > 50) {
1330                                         $title =~ s/(http|rsync):\/\///;
1331                                 }
1332                                 if (length($title) > 50) {
1333                                         $title =~ s/(master|www|rsync)\.//;
1334                                 }
1335                                 if (length($title) > 50) {
1336                                         $title =~ s/kernel.org:?//;
1337                                 }
1338                                 if (length($title) > 50) {
1339                                         $title =~ s/\/pub\/scm//;
1340                                 }
1341                         }
1342                         $co{'title_short'} = chop_str($title, 50, 5);
1343                         last;
1344                 }
1345         }
1346         if ($co{'title'} eq "") {
1347                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1348         }
1349         # remove added spaces
1350         foreach my $line (@commit_lines) {
1351                 $line =~ s/^    //;
1352         }
1353         $co{'comment'} = \@commit_lines;
1354
1355         my $age = time - $co{'committer_epoch'};
1356         $co{'age'} = $age;
1357         $co{'age_string'} = age_string($age);
1358         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1359         if ($age > 60*60*24*7*2) {
1360                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1361                 $co{'age_string_age'} = $co{'age_string'};
1362         } else {
1363                 $co{'age_string_date'} = $co{'age_string'};
1364                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1365         }
1366         return %co;
1367 }
1368
1369 sub parse_commit {
1370         my ($commit_id) = @_;
1371         my %co;
1372
1373         local $/ = "\0";
1374
1375         open my $fd, "-|", git_cmd(), "rev-list",
1376                 "--header",
1377                 "--max-count=1",
1378                 $commit_id,
1379                 "--",
1380                 or die_error(undef, "Open git-rev-list failed");
1381         %co = parse_commit_text(<$fd>);
1382         close $fd;
1383
1384         return %co;
1385 }
1386
1387 sub parse_commits {
1388         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1389         my @cos;
1390
1391         $maxcount ||= 1;
1392         $skip ||= 0;
1393
1394         local $/ = "\0";
1395
1396         open my $fd, "-|", git_cmd(), "rev-list",
1397                 "--header",
1398                 ($arg ? ($arg) : ()),
1399                 ("--max-count=" . $maxcount),
1400                 ("--skip=" . $skip),
1401                 $commit_id,
1402                 "--",
1403                 ($filename ? ($filename) : ())
1404                 or die_error(undef, "Open git-rev-list failed");
1405         while (my $line = <$fd>) {
1406                 my %co = parse_commit_text($line);
1407                 push @cos, \%co;
1408         }
1409         close $fd;
1410
1411         return wantarray ? @cos : \@cos;
1412 }
1413
1414 # parse ref from ref_file, given by ref_id, with given type
1415 sub parse_ref {
1416         my $ref_file = shift;
1417         my $ref_id = shift;
1418         my $type = shift || git_get_type($ref_id);
1419         my %ref_item;
1420
1421         $ref_item{'type'} = $type;
1422         $ref_item{'id'} = $ref_id;
1423         $ref_item{'epoch'} = 0;
1424         $ref_item{'age'} = "unknown";
1425         if ($type eq "tag") {
1426                 my %tag = parse_tag($ref_id);
1427                 $ref_item{'comment'} = $tag{'comment'};
1428                 if ($tag{'type'} eq "commit") {
1429                         my %co = parse_commit($tag{'object'});
1430                         $ref_item{'epoch'} = $co{'committer_epoch'};
1431                         $ref_item{'age'} = $co{'age_string'};
1432                 } elsif (defined($tag{'epoch'})) {
1433                         my $age = time - $tag{'epoch'};
1434                         $ref_item{'epoch'} = $tag{'epoch'};
1435                         $ref_item{'age'} = age_string($age);
1436                 }
1437                 $ref_item{'reftype'} = $tag{'type'};
1438                 $ref_item{'name'} = $tag{'name'};
1439                 $ref_item{'refid'} = $tag{'object'};
1440         } elsif ($type eq "commit"){
1441                 my %co = parse_commit($ref_id);
1442                 $ref_item{'reftype'} = "commit";
1443                 $ref_item{'name'} = $ref_file;
1444                 $ref_item{'title'} = $co{'title'};
1445                 $ref_item{'refid'} = $ref_id;
1446                 $ref_item{'epoch'} = $co{'committer_epoch'};
1447                 $ref_item{'age'} = $co{'age_string'};
1448         } else {
1449                 $ref_item{'reftype'} = $type;
1450                 $ref_item{'name'} = $ref_file;
1451                 $ref_item{'refid'} = $ref_id;
1452         }
1453
1454         return %ref_item;
1455 }
1456
1457 # parse line of git-diff-tree "raw" output
1458 sub parse_difftree_raw_line {
1459         my $line = shift;
1460         my %res;
1461
1462         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1463         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1464         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1465                 $res{'from_mode'} = $1;
1466                 $res{'to_mode'} = $2;
1467                 $res{'from_id'} = $3;
1468                 $res{'to_id'} = $4;
1469                 $res{'status'} = $5;
1470                 $res{'similarity'} = $6;
1471                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1472                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1473                 } else {
1474                         $res{'file'} = unquote($7);
1475                 }
1476         }
1477         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1478         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1479                 $res{'commit'} = $1;
1480         }
1481
1482         return wantarray ? %res : \%res;
1483 }
1484
1485 # parse line of git-ls-tree output
1486 sub parse_ls_tree_line ($;%) {
1487         my $line = shift;
1488         my %opts = @_;
1489         my %res;
1490
1491         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1492         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1493
1494         $res{'mode'} = $1;
1495         $res{'type'} = $2;
1496         $res{'hash'} = $3;
1497         if ($opts{'-z'}) {
1498                 $res{'name'} = $4;
1499         } else {
1500                 $res{'name'} = unquote($4);
1501         }
1502
1503         return wantarray ? %res : \%res;
1504 }
1505
1506 ## ......................................................................
1507 ## parse to array of hashes functions
1508
1509 sub git_get_heads_list {
1510         my $limit = shift;
1511         my @headslist;
1512
1513         open my $fd, '-|', git_cmd(), 'for-each-ref',
1514                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1515                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1516                 'refs/heads'
1517                 or return;
1518         while (my $line = <$fd>) {
1519                 my %ref_item;
1520
1521                 chomp $line;
1522                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1523                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1524                 my ($committer, $epoch, $tz) =
1525                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1526                 $name =~ s!^refs/heads/!!;
1527
1528                 $ref_item{'name'}  = $name;
1529                 $ref_item{'id'}    = $hash;
1530                 $ref_item{'title'} = $title || '(no commit message)';
1531                 $ref_item{'epoch'} = $epoch;
1532                 if ($epoch) {
1533                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1534                 } else {
1535                         $ref_item{'age'} = "unknown";
1536                 }
1537
1538                 push @headslist, \%ref_item;
1539         }
1540         close $fd;
1541
1542         return wantarray ? @headslist : \@headslist;
1543 }
1544
1545 sub git_get_tags_list {
1546         my $limit = shift;
1547         my @tagslist;
1548
1549         open my $fd, '-|', git_cmd(), 'for-each-ref',
1550                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1551                 '--format=%(objectname) %(objecttype) %(refname) '.
1552                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1553                 'refs/tags'
1554                 or return;
1555         while (my $line = <$fd>) {
1556                 my %ref_item;
1557
1558                 chomp $line;
1559                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1560                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1561                 my ($creator, $epoch, $tz) =
1562                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1563                 $name =~ s!^refs/tags/!!;
1564
1565                 $ref_item{'type'} = $type;
1566                 $ref_item{'id'} = $id;
1567                 $ref_item{'name'} = $name;
1568                 if ($type eq "tag") {
1569                         $ref_item{'subject'} = $title;
1570                         $ref_item{'reftype'} = $reftype;
1571                         $ref_item{'refid'}   = $refid;
1572                 } else {
1573                         $ref_item{'reftype'} = $type;
1574                         $ref_item{'refid'}   = $id;
1575                 }
1576
1577                 if ($type eq "tag" || $type eq "commit") {
1578                         $ref_item{'epoch'} = $epoch;
1579                         if ($epoch) {
1580                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1581                         } else {
1582                                 $ref_item{'age'} = "unknown";
1583                         }
1584                 }
1585
1586                 push @tagslist, \%ref_item;
1587         }
1588         close $fd;
1589
1590         return wantarray ? @tagslist : \@tagslist;
1591 }
1592
1593 ## ----------------------------------------------------------------------
1594 ## filesystem-related functions
1595
1596 sub get_file_owner {
1597         my $path = shift;
1598
1599         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1600         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1601         if (!defined $gcos) {
1602                 return undef;
1603         }
1604         my $owner = $gcos;
1605         $owner =~ s/[,;].*$//;
1606         return to_utf8($owner);
1607 }
1608
1609 ## ......................................................................
1610 ## mimetype related functions
1611
1612 sub mimetype_guess_file {
1613         my $filename = shift;
1614         my $mimemap = shift;
1615         -r $mimemap or return undef;
1616
1617         my %mimemap;
1618         open(MIME, $mimemap) or return undef;
1619         while (<MIME>) {
1620                 next if m/^#/; # skip comments
1621                 my ($mime, $exts) = split(/\t+/);
1622                 if (defined $exts) {
1623                         my @exts = split(/\s+/, $exts);
1624                         foreach my $ext (@exts) {
1625                                 $mimemap{$ext} = $mime;
1626                         }
1627                 }
1628         }
1629         close(MIME);
1630
1631         $filename =~ /\.([^.]*)$/;
1632         return $mimemap{$1};
1633 }
1634
1635 sub mimetype_guess {
1636         my $filename = shift;
1637         my $mime;
1638         $filename =~ /\./ or return undef;
1639
1640         if ($mimetypes_file) {
1641                 my $file = $mimetypes_file;
1642                 if ($file !~ m!^/!) { # if it is relative path
1643                         # it is relative to project
1644                         $file = "$projectroot/$project/$file";
1645                 }
1646                 $mime = mimetype_guess_file($filename, $file);
1647         }
1648         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1649         return $mime;
1650 }
1651
1652 sub blob_mimetype {
1653         my $fd = shift;
1654         my $filename = shift;
1655
1656         if ($filename) {
1657                 my $mime = mimetype_guess($filename);
1658                 $mime and return $mime;
1659         }
1660
1661         # just in case
1662         return $default_blob_plain_mimetype unless $fd;
1663
1664         if (-T $fd) {
1665                 return 'text/plain' .
1666                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1667         } elsif (! $filename) {
1668                 return 'application/octet-stream';
1669         } elsif ($filename =~ m/\.png$/i) {
1670                 return 'image/png';
1671         } elsif ($filename =~ m/\.gif$/i) {
1672                 return 'image/gif';
1673         } elsif ($filename =~ m/\.jpe?g$/i) {
1674                 return 'image/jpeg';
1675         } else {
1676                 return 'application/octet-stream';
1677         }
1678 }
1679
1680 ## ======================================================================
1681 ## functions printing HTML: header, footer, error page
1682
1683 sub git_header_html {
1684         my $status = shift || "200 OK";
1685         my $expires = shift;
1686
1687         my $title = "$site_name";
1688         if (defined $project) {
1689                 $title .= " - $project";
1690                 if (defined $action) {
1691                         $title .= "/$action";
1692                         if (defined $file_name) {
1693                                 $title .= " - " . esc_path($file_name);
1694                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1695                                         $title .= "/";
1696                                 }
1697                         }
1698                 }
1699         }
1700         my $content_type;
1701         # require explicit support from the UA if we are to send the page as
1702         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1703         # we have to do this because MSIE sometimes globs '*/*', pretending to
1704         # support xhtml+xml but choking when it gets what it asked for.
1705         if (defined $cgi->http('HTTP_ACCEPT') &&
1706             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1707             $cgi->Accept('application/xhtml+xml') != 0) {
1708                 $content_type = 'application/xhtml+xml';
1709         } else {
1710                 $content_type = 'text/html';
1711         }
1712         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1713                            -status=> $status, -expires => $expires);
1714         print <<EOF;
1715 <?xml version="1.0" encoding="utf-8"?>
1716 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1717 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1718 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1719 <!-- git core binaries version $git_version -->
1720 <head>
1721 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1722 <meta name="generator" content="gitweb/$version git/$git_version"/>
1723 <meta name="robots" content="index, nofollow"/>
1724 <title>$title</title>
1725 EOF
1726 # print out each stylesheet that exist
1727         if (defined $stylesheet) {
1728 #provides backwards capability for those people who define style sheet in a config file
1729                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1730         } else {
1731                 foreach my $stylesheet (@stylesheets) {
1732                         next unless $stylesheet;
1733                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1734                 }
1735         }
1736         if (defined $project) {
1737                 printf('<link rel="alternate" title="%s log RSS feed" '.
1738                        'href="%s" type="application/rss+xml" />'."\n",
1739                        esc_param($project), href(action=>"rss"));
1740                 printf('<link rel="alternate" title="%s log Atom feed" '.
1741                        'href="%s" type="application/atom+xml" />'."\n",
1742                        esc_param($project), href(action=>"atom"));
1743         } else {
1744                 printf('<link rel="alternate" title="%s projects list" '.
1745                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1746                        $site_name, href(project=>undef, action=>"project_index"));
1747                 printf('<link rel="alternate" title="%s projects feeds" '.
1748                        'href="%s" type="text/x-opml"/>'."\n",
1749                        $site_name, href(project=>undef, action=>"opml"));
1750         }
1751         if (defined $favicon) {
1752                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1753         }
1754
1755         print "</head>\n" .
1756               "<body>\n";
1757
1758         if (-f $site_header) {
1759                 open (my $fd, $site_header);
1760                 print <$fd>;
1761                 close $fd;
1762         }
1763
1764         print "<div class=\"page_header\">\n" .
1765               $cgi->a({-href => esc_url($logo_url),
1766                        -title => $logo_label},
1767                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1768         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1769         if (defined $project) {
1770                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1771                 if (defined $action) {
1772                         print " / $action";
1773                 }
1774                 print "\n";
1775         }
1776         my ($have_search) = gitweb_check_feature('search');
1777         if ((defined $project) && ($have_search)) {
1778                 if (!defined $searchtext) {
1779                         $searchtext = "";
1780                 }
1781                 my $search_hash;
1782                 if (defined $hash_base) {
1783                         $search_hash = $hash_base;
1784                 } elsif (defined $hash) {
1785                         $search_hash = $hash;
1786                 } else {
1787                         $search_hash = "HEAD";
1788                 }
1789                 $cgi->param("a", "search");
1790                 $cgi->param("h", $search_hash);
1791                 $cgi->param("p", $project);
1792                 print $cgi->startform(-method => "get", -action => $my_uri) .
1793                       "<div class=\"search\">\n" .
1794                       $cgi->hidden(-name => "p") . "\n" .
1795                       $cgi->hidden(-name => "a") . "\n" .
1796                       $cgi->hidden(-name => "h") . "\n" .
1797                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1798                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1799                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1800                       " search:\n",
1801                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1802                       "</div>" .
1803                       $cgi->end_form() . "\n";
1804         }
1805         print "</div>\n";
1806 }
1807
1808 sub git_footer_html {
1809         print "<div class=\"page_footer\">\n";
1810         if (defined $project) {
1811                 my $descr = git_get_project_description($project);
1812                 if (defined $descr) {
1813                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1814                 }
1815                 print $cgi->a({-href => href(action=>"rss"),
1816                               -class => "rss_logo"}, "RSS") . " ";
1817                 print $cgi->a({-href => href(action=>"atom"),
1818                               -class => "rss_logo"}, "Atom") . "\n";
1819         } else {
1820                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1821                               -class => "rss_logo"}, "OPML") . " ";
1822                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1823                               -class => "rss_logo"}, "TXT") . "\n";
1824         }
1825         print "</div>\n" ;
1826
1827         if (-f $site_footer) {
1828                 open (my $fd, $site_footer);
1829                 print <$fd>;
1830                 close $fd;
1831         }
1832
1833         print "</body>\n" .
1834               "</html>";
1835 }
1836
1837 sub die_error {
1838         my $status = shift || "403 Forbidden";
1839         my $error = shift || "Malformed query, file missing or permission denied";
1840
1841         git_header_html($status);
1842         print <<EOF;
1843 <div class="page_body">
1844 <br /><br />
1845 $status - $error
1846 <br />
1847 </div>
1848 EOF
1849         git_footer_html();
1850         exit;
1851 }
1852
1853 ## ----------------------------------------------------------------------
1854 ## functions printing or outputting HTML: navigation
1855
1856 sub git_print_page_nav {
1857         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1858         $extra = '' if !defined $extra; # pager or formats
1859
1860         my @navs = qw(summary shortlog log commit commitdiff tree);
1861         if ($suppress) {
1862                 @navs = grep { $_ ne $suppress } @navs;
1863         }
1864
1865         my %arg = map { $_ => {action=>$_} } @navs;
1866         if (defined $head) {
1867                 for (qw(commit commitdiff)) {
1868                         $arg{$_}{hash} = $head;
1869                 }
1870                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1871                         for (qw(shortlog log)) {
1872                                 $arg{$_}{hash} = $head;
1873                         }
1874                 }
1875         }
1876         $arg{tree}{hash} = $treehead if defined $treehead;
1877         $arg{tree}{hash_base} = $treebase if defined $treebase;
1878
1879         print "<div class=\"page_nav\">\n" .
1880                 (join " | ",
1881                  map { $_ eq $current ?
1882                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1883                  } @navs);
1884         print "<br/>\n$extra<br/>\n" .
1885               "</div>\n";
1886 }
1887
1888 sub format_paging_nav {
1889         my ($action, $hash, $head, $page, $nrevs) = @_;
1890         my $paging_nav;
1891
1892
1893         if ($hash ne $head || $page) {
1894                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1895         } else {
1896                 $paging_nav .= "HEAD";
1897         }
1898
1899         if ($page > 0) {
1900                 $paging_nav .= " &sdot; " .
1901                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1902                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1903         } else {
1904                 $paging_nav .= " &sdot; prev";
1905         }
1906
1907         if ($nrevs >= (100 * ($page+1)-1)) {
1908                 $paging_nav .= " &sdot; " .
1909                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1910                                  -accesskey => "n", -title => "Alt-n"}, "next");
1911         } else {
1912                 $paging_nav .= " &sdot; next";
1913         }
1914
1915         return $paging_nav;
1916 }
1917
1918 ## ......................................................................
1919 ## functions printing or outputting HTML: div
1920
1921 sub git_print_header_div {
1922         my ($action, $title, $hash, $hash_base) = @_;
1923         my %args = ();
1924
1925         $args{action} = $action;
1926         $args{hash} = $hash if $hash;
1927         $args{hash_base} = $hash_base if $hash_base;
1928
1929         print "<div class=\"header\">\n" .
1930               $cgi->a({-href => href(%args), -class => "title"},
1931               $title ? $title : $action) .
1932               "\n</div>\n";
1933 }
1934
1935 #sub git_print_authorship (\%) {
1936 sub git_print_authorship {
1937         my $co = shift;
1938
1939         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1940         print "<div class=\"author_date\">" .
1941               esc_html($co->{'author_name'}) .
1942               " [$ad{'rfc2822'}";
1943         if ($ad{'hour_local'} < 6) {
1944                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1945                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1946         } else {
1947                 printf(" (%02d:%02d %s)",
1948                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1949         }
1950         print "]</div>\n";
1951 }
1952
1953 sub git_print_page_path {
1954         my $name = shift;
1955         my $type = shift;
1956         my $hb = shift;
1957
1958
1959         print "<div class=\"page_path\">";
1960         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1961                       -title => 'tree root'}, "[$project]");
1962         print " / ";
1963         if (defined $name) {
1964                 my @dirname = split '/', $name;
1965                 my $basename = pop @dirname;
1966                 my $fullname = '';
1967
1968                 foreach my $dir (@dirname) {
1969                         $fullname .= ($fullname ? '/' : '') . $dir;
1970                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1971                                                      hash_base=>$hb),
1972                                       -title => esc_html($fullname)}, esc_path($dir));
1973                         print " / ";
1974                 }
1975                 if (defined $type && $type eq 'blob') {
1976                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1977                                                      hash_base=>$hb),
1978                                       -title => esc_html($name)}, esc_path($basename));
1979                 } elsif (defined $type && $type eq 'tree') {
1980                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1981                                                      hash_base=>$hb),
1982                                       -title => esc_html($name)}, esc_path($basename));
1983                         print " / ";
1984                 } else {
1985                         print esc_path($basename);
1986                 }
1987         }
1988         print "<br/></div>\n";
1989 }
1990
1991 # sub git_print_log (\@;%) {
1992 sub git_print_log ($;%) {
1993         my $log = shift;
1994         my %opts = @_;
1995
1996         if ($opts{'-remove_title'}) {
1997                 # remove title, i.e. first line of log
1998                 shift @$log;
1999         }
2000         # remove leading empty lines
2001         while (defined $log->[0] && $log->[0] eq "") {
2002                 shift @$log;
2003         }
2004
2005         # print log
2006         my $signoff = 0;
2007         my $empty = 0;
2008         foreach my $line (@$log) {
2009                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2010                         $signoff = 1;
2011                         $empty = 0;
2012                         if (! $opts{'-remove_signoff'}) {
2013                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2014                                 next;
2015                         } else {
2016                                 # remove signoff lines
2017                                 next;
2018                         }
2019                 } else {
2020                         $signoff = 0;
2021                 }
2022
2023                 # print only one empty line
2024                 # do not print empty line after signoff
2025                 if ($line eq "") {
2026                         next if ($empty || $signoff);
2027                         $empty = 1;
2028                 } else {
2029                         $empty = 0;
2030                 }
2031
2032                 print format_log_line_html($line) . "<br/>\n";
2033         }
2034
2035         if ($opts{'-final_empty_line'}) {
2036                 # end with single empty line
2037                 print "<br/>\n" unless $empty;
2038         }
2039 }
2040
2041 # return link target (what link points to)
2042 sub git_get_link_target {
2043         my $hash = shift;
2044         my $link_target;
2045
2046         # read link
2047         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2048                 or return;
2049         {
2050                 local $/;
2051                 $link_target = <$fd>;
2052         }
2053         close $fd
2054                 or return;
2055
2056         return $link_target;
2057 }
2058
2059 # given link target, and the directory (basedir) the link is in,
2060 # return target of link relative to top directory (top tree);
2061 # return undef if it is not possible (including absolute links).
2062 sub normalize_link_target {
2063         my ($link_target, $basedir, $hash_base) = @_;
2064
2065         # we can normalize symlink target only if $hash_base is provided
2066         return unless $hash_base;
2067
2068         # absolute symlinks (beginning with '/') cannot be normalized
2069         return if (substr($link_target, 0, 1) eq '/');
2070
2071         # normalize link target to path from top (root) tree (dir)
2072         my $path;
2073         if ($basedir) {
2074                 $path = $basedir . '/' . $link_target;
2075         } else {
2076                 # we are in top (root) tree (dir)
2077                 $path = $link_target;
2078         }
2079
2080         # remove //, /./, and /../
2081         my @path_parts;
2082         foreach my $part (split('/', $path)) {
2083                 # discard '.' and ''
2084                 next if (!$part || $part eq '.');
2085                 # handle '..'
2086                 if ($part eq '..') {
2087                         if (@path_parts) {
2088                                 pop @path_parts;
2089                         } else {
2090                                 # link leads outside repository (outside top dir)
2091                                 return;
2092                         }
2093                 } else {
2094                         push @path_parts, $part;
2095                 }
2096         }
2097         $path = join('/', @path_parts);
2098
2099         return $path;
2100 }
2101
2102 # print tree entry (row of git_tree), but without encompassing <tr> element
2103 sub git_print_tree_entry {
2104         my ($t, $basedir, $hash_base, $have_blame) = @_;
2105
2106         my %base_key = ();
2107         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2108
2109         # The format of a table row is: mode list link.  Where mode is
2110         # the mode of the entry, list is the name of the entry, an href,
2111         # and link is the action links of the entry.
2112
2113         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2114         if ($t->{'type'} eq "blob") {
2115                 print "<td class=\"list\">" .
2116                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2117                                                file_name=>"$basedir$t->{'name'}", %base_key),
2118                                 -class => "list"}, esc_path($t->{'name'}));
2119                 if (S_ISLNK(oct $t->{'mode'})) {
2120                         my $link_target = git_get_link_target($t->{'hash'});
2121                         if ($link_target) {
2122                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2123                                 if (defined $norm_target) {
2124                                         print " -> " .
2125                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2126                                                                      file_name=>$norm_target),
2127                                                        -title => $norm_target}, esc_path($link_target));
2128                                 } else {
2129                                         print " -> " . esc_path($link_target);
2130                                 }
2131                         }
2132                 }
2133                 print "</td>\n";
2134                 print "<td class=\"link\">";
2135                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2136                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2137                               "blob");
2138                 if ($have_blame) {
2139                         print " | " .
2140                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2141                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2142                                       "blame");
2143                 }
2144                 if (defined $hash_base) {
2145                         print " | " .
2146                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2147                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2148                                       "history");
2149                 }
2150                 print " | " .
2151                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2152                                                file_name=>"$basedir$t->{'name'}")},
2153                                 "raw");
2154                 print "</td>\n";
2155
2156         } elsif ($t->{'type'} eq "tree") {
2157                 print "<td class=\"list\">";
2158                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2159                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2160                               esc_path($t->{'name'}));
2161                 print "</td>\n";
2162                 print "<td class=\"link\">";
2163                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2164                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2165                               "tree");
2166                 if (defined $hash_base) {
2167                         print " | " .
2168                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2169                                                      file_name=>"$basedir$t->{'name'}")},
2170                                       "history");
2171                 }
2172                 print "</td>\n";
2173         }
2174 }
2175
2176 ## ......................................................................
2177 ## functions printing large fragments of HTML
2178
2179 sub git_difftree_body {
2180         my ($difftree, $hash, $parent) = @_;
2181         my ($have_blame) = gitweb_check_feature('blame');
2182         print "<div class=\"list_head\">\n";
2183         if ($#{$difftree} > 10) {
2184                 print(($#{$difftree} + 1) . " files changed:\n");
2185         }
2186         print "</div>\n";
2187
2188         print "<table class=\"diff_tree\">\n";
2189         my $alternate = 1;
2190         my $patchno = 0;
2191         foreach my $line (@{$difftree}) {
2192                 my %diff = parse_difftree_raw_line($line);
2193
2194                 if ($alternate) {
2195                         print "<tr class=\"dark\">\n";
2196                 } else {
2197                         print "<tr class=\"light\">\n";
2198                 }
2199                 $alternate ^= 1;
2200
2201                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2202                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2203                 if ($diff{'to_mode'} ne ('0' x 6)) {
2204                         $to_mode_oct = oct $diff{'to_mode'};
2205                         if (S_ISREG($to_mode_oct)) { # only for regular file
2206                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2207                         }
2208                         $to_file_type = file_type($diff{'to_mode'});
2209                 }
2210                 if ($diff{'from_mode'} ne ('0' x 6)) {
2211                         $from_mode_oct = oct $diff{'from_mode'};
2212                         if (S_ISREG($to_mode_oct)) { # only for regular file
2213                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2214                         }
2215                         $from_file_type = file_type($diff{'from_mode'});
2216                 }
2217
2218                 if ($diff{'status'} eq "A") { # created
2219                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2220                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2221                         $mode_chng   .= "]</span>";
2222                         print "<td>";
2223                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2224                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2225                                       -class => "list"}, esc_path($diff{'file'}));
2226                         print "</td>\n";
2227                         print "<td>$mode_chng</td>\n";
2228                         print "<td class=\"link\">";
2229                         if ($action eq 'commitdiff') {
2230                                 # link to patch
2231                                 $patchno++;
2232                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2233                                 print " | ";
2234                         }
2235                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2236                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2237                                       "blob") . " | ";
2238                         print "</td>\n";
2239
2240                 } elsif ($diff{'status'} eq "D") { # deleted
2241                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2242                         print "<td>";
2243                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2244                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2245                                        -class => "list"}, esc_path($diff{'file'}));
2246                         print "</td>\n";
2247                         print "<td>$mode_chng</td>\n";
2248                         print "<td class=\"link\">";
2249                         if ($action eq 'commitdiff') {
2250                                 # link to patch
2251                                 $patchno++;
2252                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2253                                 print " | ";
2254                         }
2255                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2256                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2257                                       "blob") . " | ";
2258                         if ($have_blame) {
2259                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2260                                                              file_name=>$diff{'file'})},
2261                                               "blame") . " | ";
2262                         }
2263                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2264                                                      file_name=>$diff{'file'})},
2265                                       "history");
2266                         print "</td>\n";
2267
2268                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2269                         my $mode_chnge = "";
2270                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2271                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2272                                 if ($from_file_type != $to_file_type) {
2273                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2274                                 }
2275                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2276                                         if ($from_mode_str && $to_mode_str) {
2277                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2278                                         } elsif ($to_mode_str) {
2279                                                 $mode_chnge .= " mode: $to_mode_str";
2280                                         }
2281                                 }
2282                                 $mode_chnge .= "]</span>\n";
2283                         }
2284                         print "<td>";
2285                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2286                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2287                                       -class => "list"}, esc_path($diff{'file'}));
2288                         print "</td>\n";
2289                         print "<td>$mode_chnge</td>\n";
2290                         print "<td class=\"link\">";
2291                         if ($action eq 'commitdiff') {
2292                                 # link to patch
2293                                 $patchno++;
2294                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2295                                       " | ";
2296                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2297                                 # "commit" view and modified file (not onlu mode changed)
2298                                 print $cgi->a({-href => href(action=>"blobdiff",
2299                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2300                                                              hash_base=>$hash, hash_parent_base=>$parent,
2301                                                              file_name=>$diff{'file'})},
2302                                               "diff") .
2303                                       " | ";
2304                         }
2305                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2306                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2307                                        "blob") . " | ";
2308                         if ($have_blame) {
2309                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2310                                                              file_name=>$diff{'file'})},
2311                                               "blame") . " | ";
2312                         }
2313                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2314                                                      file_name=>$diff{'file'})},
2315                                       "history");
2316                         print "</td>\n";
2317
2318                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2319                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2320                         my $nstatus = $status_name{$diff{'status'}};
2321                         my $mode_chng = "";
2322                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2323                                 # mode also for directories, so we cannot use $to_mode_str
2324                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2325                         }
2326                         print "<td>" .
2327                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2328                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2329                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2330                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2331                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2332                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2333                                       -class => "list"}, esc_path($diff{'from_file'})) .
2334                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2335                               "<td class=\"link\">";
2336                         if ($action eq 'commitdiff') {
2337                                 # link to patch
2338                                 $patchno++;
2339                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2340                                       " | ";
2341                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2342                                 # "commit" view and modified file (not only pure rename or copy)
2343                                 print $cgi->a({-href => href(action=>"blobdiff",
2344                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2345                                                              hash_base=>$hash, hash_parent_base=>$parent,
2346                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2347                                               "diff") .
2348                                       " | ";
2349                         }
2350                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2351                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2352                                       "blob") . " | ";
2353                         if ($have_blame) {
2354                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2355                                                              file_name=>$diff{'to_file'})},
2356                                               "blame") . " | ";
2357                         }
2358                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2359                                                     file_name=>$diff{'to_file'})},
2360                                       "history");
2361                         print "</td>\n";
2362
2363                 } # we should not encounter Unmerged (U) or Unknown (X) status
2364                 print "</tr>\n";
2365         }
2366         print "</table>\n";
2367 }
2368
2369 sub git_patchset_body {
2370         my ($fd, $difftree, $hash, $hash_parent) = @_;
2371
2372         my $patch_idx = 0;
2373         my $patch_line;
2374         my $diffinfo;
2375         my (%from, %to);
2376         my ($from_id, $to_id);
2377
2378         print "<div class=\"patchset\">\n";
2379
2380         # skip to first patch
2381         while ($patch_line = <$fd>) {
2382                 chomp $patch_line;
2383
2384                 last if ($patch_line =~ m/^diff /);
2385         }
2386
2387  PATCH:
2388         while ($patch_line) {
2389                 my @diff_header;
2390
2391                 # git diff header
2392                 #assert($patch_line =~ m/^diff /) if DEBUG;
2393                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2394                 push @diff_header, $patch_line;
2395
2396                 # extended diff header
2397         EXTENDED_HEADER:
2398                 while ($patch_line = <$fd>) {
2399                         chomp $patch_line;
2400
2401                         last EXTENDED_HEADER if ($patch_line =~ m/^--- /);
2402
2403                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2404                                 $from_id = $1;
2405                                 $to_id   = $2;
2406                         }
2407
2408                         push @diff_header, $patch_line;
2409                 }
2410                 #last PATCH unless $patch_line;
2411                 my $last_patch_line = $patch_line;
2412
2413                 # check if current patch belong to current raw line
2414                 # and parse raw git-diff line if needed
2415                 if (defined $diffinfo &&
2416                     $diffinfo->{'from_id'} eq $from_id &&
2417                     $diffinfo->{'to_id'}   eq $to_id) {
2418                         # this is split patch
2419                         print "<div class=\"patch cont\">\n";
2420                 } else {
2421                         # advance raw git-diff output if needed
2422                         $patch_idx++ if defined $diffinfo;
2423
2424                         # read and prepare patch information
2425                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2426                                 # pre-parsed (or generated by hand)
2427                                 $diffinfo = $difftree->[$patch_idx];
2428                         } else {
2429                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2430                         }
2431                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2432                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2433                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2434                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2435                                                      hash=>$diffinfo->{'from_id'},
2436                                                      file_name=>$from{'file'});
2437                         }
2438                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2439                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2440                                                    hash=>$diffinfo->{'to_id'},
2441                                                    file_name=>$to{'file'});
2442                         }
2443                         # this is first patch for raw difftree line with $patch_idx index
2444                         # we index @$difftree array from 0, but number patches from 1
2445                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2446                 }
2447
2448                 # print "git diff" header
2449                 $patch_line = shift @diff_header;
2450                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2451                 if ($from{'href'}) {
2452                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2453                                                'a/' . esc_path($from{'file'}));
2454                 } else { # file was added
2455                         $patch_line .= 'a/' . esc_path($from{'file'});
2456                 }
2457                 $patch_line .= ' ';
2458                 if ($to{'href'}) {
2459                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2460                                                'b/' . esc_path($to{'file'}));
2461                 } else { # file was deleted
2462                         $patch_line .= 'b/' . esc_path($to{'file'});
2463                 }
2464                 print "<div class=\"diff header\">$patch_line</div>\n";
2465
2466                 # print extended diff header
2467                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2468         EXTENDED_HEADER:
2469                 foreach $patch_line (@diff_header) {
2470                         # match <path>
2471                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2472                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2473                                                         esc_path($from{'file'}));
2474                         }
2475                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2476                                 $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2477                                                       esc_path($to{'file'}));
2478                         }
2479                         # match <mode>
2480                         if ($patch_line =~ m/\s(\d{6})$/) {
2481                                 $patch_line .= '<span class="info"> (' .
2482                                                file_type_long($1) .
2483                                                ')</span>';
2484                         }
2485                         # match <hash>
2486                         if ($patch_line =~ m/^index/) {
2487                                 my ($from_link, $to_link);
2488                                 if ($from{'href'}) {
2489                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2490                                                              substr($diffinfo->{'from_id'},0,7));
2491                                 } else {
2492                                         $from_link = '0' x 7;
2493                                 }
2494                                 if ($to{'href'}) {
2495                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2496                                                            substr($diffinfo->{'to_id'},0,7));
2497                                 } else {
2498                                         $to_link = '0' x 7;
2499                                 }
2500                                 #affirm {
2501                                 #       my ($from_hash, $to_hash) =
2502                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2503                                 #       my ($from_id, $to_id) =
2504                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2505                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2506                                 #} if DEBUG;
2507                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2508                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2509                         }
2510                         print $patch_line . "<br/>\n";
2511                 }
2512                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2513
2514                 # from-file/to-file diff header
2515                 $patch_line = $last_patch_line;
2516                 #assert($patch_line =~ m/^---/) if DEBUG;
2517                 if ($from{'href'}) {
2518                         $patch_line = '--- a/' .
2519                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2520                                               esc_path($from{'file'}));
2521                 }
2522                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2523
2524                 $patch_line = <$fd>;
2525                 #last PATCH unless $patch_line;
2526                 chomp $patch_line;
2527
2528                 #assert($patch_line =~ m/^+++/) if DEBUG;
2529                 if ($to{'href'}) {
2530                         $patch_line = '+++ b/' .
2531                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2532                                               esc_path($to{'file'}));
2533                 }
2534                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2535
2536                 # the patch itself
2537         LINE:
2538                 while ($patch_line = <$fd>) {
2539                         chomp $patch_line;
2540
2541                         next PATCH if ($patch_line =~ m/^diff /);
2542
2543                         print format_diff_line($patch_line, \%from, \%to);
2544                 }
2545
2546         } continue {
2547                 print "</div>\n"; # class="patch"
2548         }
2549
2550         print "</div>\n"; # class="patchset"
2551 }
2552
2553 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2554
2555 sub git_project_list_body {
2556         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2557
2558         my ($check_forks) = gitweb_check_feature('forks');
2559
2560         my @projects;
2561         foreach my $pr (@$projlist) {
2562                 my (@aa) = git_get_last_activity($pr->{'path'});
2563                 unless (@aa) {
2564                         next;
2565                 }
2566                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2567                 if (!defined $pr->{'descr'}) {
2568                         my $descr = git_get_project_description($pr->{'path'}) || "";
2569                         $pr->{'descr_long'} = to_utf8($descr);
2570                         $pr->{'descr'} = chop_str($descr, 25, 5);
2571                 }
2572                 if (!defined $pr->{'owner'}) {
2573                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2574                 }
2575                 if ($check_forks) {
2576                         my $pname = $pr->{'path'};
2577                         if (($pname =~ s/\.git$//) &&
2578                             ($pname !~ /\/$/) &&
2579                             (-d "$projectroot/$pname")) {
2580                                 $pr->{'forks'} = "-d $projectroot/$pname";
2581                         }
2582                         else {
2583                                 $pr->{'forks'} = 0;
2584                         }
2585                 }
2586                 push @projects, $pr;
2587         }
2588
2589         $order ||= "project";
2590         $from = 0 unless defined $from;
2591         $to = $#projects if (!defined $to || $#projects < $to);
2592
2593         print "<table class=\"project_list\">\n";
2594         unless ($no_header) {
2595                 print "<tr>\n";
2596                 if ($check_forks) {
2597                         print "<th></th>\n";
2598                 }
2599                 if ($order eq "project") {
2600                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2601                         print "<th>Project</th>\n";
2602                 } else {
2603                         print "<th>" .
2604                               $cgi->a({-href => href(project=>undef, order=>'project'),
2605                                        -class => "header"}, "Project") .
2606                               "</th>\n";
2607                 }
2608                 if ($order eq "descr") {
2609                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2610                         print "<th>Description</th>\n";
2611                 } else {
2612                         print "<th>" .
2613                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2614                                        -class => "header"}, "Description") .
2615                               "</th>\n";
2616                 }
2617                 if ($order eq "owner") {
2618                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2619                         print "<th>Owner</th>\n";
2620                 } else {
2621                         print "<th>" .
2622                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2623                                        -class => "header"}, "Owner") .
2624                               "</th>\n";
2625                 }
2626                 if ($order eq "age") {
2627                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2628                         print "<th>Last Change</th>\n";
2629                 } else {
2630                         print "<th>" .
2631                               $cgi->a({-href => href(project=>undef, order=>'age'),
2632                                        -class => "header"}, "Last Change") .
2633                               "</th>\n";
2634                 }
2635                 print "<th></th>\n" .
2636                       "</tr>\n";
2637         }
2638         my $alternate = 1;
2639         for (my $i = $from; $i <= $to; $i++) {
2640                 my $pr = $projects[$i];
2641                 if ($alternate) {
2642                         print "<tr class=\"dark\">\n";
2643                 } else {
2644                         print "<tr class=\"light\">\n";
2645                 }
2646                 $alternate ^= 1;
2647                 if ($check_forks) {
2648                         print "<td>";
2649                         if ($pr->{'forks'}) {
2650                                 print "<!-- $pr->{'forks'} -->\n";
2651                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2652                         }
2653                         print "</td>\n";
2654                 }
2655                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2656                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2657                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2658                                         -class => "list", -title => $pr->{'descr_long'}},
2659                                         esc_html($pr->{'descr'})) . "</td>\n" .
2660                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2661                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2662                       $pr->{'age_string'} . "</td>\n" .
2663                       "<td class=\"link\">" .
2664                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2665                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2666                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2667                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2668                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2669                       "</td>\n" .
2670                       "</tr>\n";
2671         }
2672         if (defined $extra) {
2673                 print "<tr>\n";
2674                 if ($check_forks) {
2675                         print "<td></td>\n";
2676                 }
2677                 print "<td colspan=\"5\">$extra</td>\n" .
2678                       "</tr>\n";
2679         }
2680         print "</table>\n";
2681 }
2682
2683 sub git_shortlog_body {
2684         # uses global variable $project
2685         my ($commitlist, $from, $to, $refs, $extra) = @_;
2686
2687         my $have_snapshot = gitweb_have_snapshot();
2688
2689         $from = 0 unless defined $from;
2690         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2691
2692         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2693         my $alternate = 1;
2694         for (my $i = $from; $i <= $to; $i++) {
2695                 my %co = %{$commitlist->[$i]};
2696                 my $commit = $co{'id'};
2697                 my $ref = format_ref_marker($refs, $commit);
2698                 if ($alternate) {
2699                         print "<tr class=\"dark\">\n";
2700                 } else {
2701                         print "<tr class=\"light\">\n";
2702                 }
2703                 $alternate ^= 1;
2704                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2705                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2706                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2707                       "<td>";
2708                 print format_subject_html($co{'title'}, $co{'title_short'},
2709                                           href(action=>"commit", hash=>$commit), $ref);
2710                 print "</td>\n" .
2711                       "<td class=\"link\">" .
2712                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2713                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2714                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2715                 if ($have_snapshot) {
2716                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2717                 }
2718                 print "</td>\n" .
2719                       "</tr>\n";
2720         }
2721         if (defined $extra) {
2722                 print "<tr>\n" .
2723                       "<td colspan=\"4\">$extra</td>\n" .
2724                       "</tr>\n";
2725         }
2726         print "</table>\n";
2727 }
2728
2729 sub git_history_body {
2730         # Warning: assumes constant type (blob or tree) during history
2731         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2732
2733         $from = 0 unless defined $from;
2734         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2735
2736         print "<table class=\"history\" cellspacing=\"0\">\n";
2737         my $alternate = 1;
2738         for (my $i = $from; $i <= $to; $i++) {
2739                 my %co = %{$commitlist->[$i]};
2740                 if (!%co) {
2741                         next;
2742                 }
2743                 my $commit = $co{'id'};
2744
2745                 my $ref = format_ref_marker($refs, $commit);
2746
2747                 if ($alternate) {
2748                         print "<tr class=\"dark\">\n";
2749                 } else {
2750                         print "<tr class=\"light\">\n";
2751                 }
2752                 $alternate ^= 1;
2753                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2754                       # shortlog uses      chop_str($co{'author_name'}, 10)
2755                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2756                       "<td>";
2757                 # originally git_history used chop_str($co{'title'}, 50)
2758                 print format_subject_html($co{'title'}, $co{'title_short'},
2759                                           href(action=>"commit", hash=>$commit), $ref);
2760                 print "</td>\n" .
2761                       "<td class=\"link\">" .
2762                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2763                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2764
2765                 if ($ftype eq 'blob') {
2766                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2767                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2768                         if (defined $blob_current && defined $blob_parent &&
2769                                         $blob_current ne $blob_parent) {
2770                                 print " | " .
2771                                         $cgi->a({-href => href(action=>"blobdiff",
2772                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2773                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2774                                                                file_name=>$file_name)},
2775                                                 "diff to current");
2776                         }
2777                 }
2778                 print "</td>\n" .
2779                       "</tr>\n";
2780         }
2781         if (defined $extra) {
2782                 print "<tr>\n" .
2783                       "<td colspan=\"4\">$extra</td>\n" .
2784                       "</tr>\n";
2785         }
2786         print "</table>\n";
2787 }
2788
2789 sub git_tags_body {
2790         # uses global variable $project
2791         my ($taglist, $from, $to, $extra) = @_;
2792         $from = 0 unless defined $from;
2793         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2794
2795         print "<table class=\"tags\" cellspacing=\"0\">\n";
2796         my $alternate = 1;
2797         for (my $i = $from; $i <= $to; $i++) {
2798                 my $entry = $taglist->[$i];
2799                 my %tag = %$entry;
2800                 my $comment = $tag{'subject'};
2801                 my $comment_short;
2802                 if (defined $comment) {
2803                         $comment_short = chop_str($comment, 30, 5);
2804                 }
2805                 if ($alternate) {
2806                         print "<tr class=\"dark\">\n";
2807                 } else {
2808                         print "<tr class=\"light\">\n";
2809                 }
2810                 $alternate ^= 1;
2811                 print "<td><i>$tag{'age'}</i></td>\n" .
2812                       "<td>" .
2813                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2814                                -class => "list name"}, esc_html($tag{'name'})) .
2815                       "</td>\n" .
2816                       "<td>";
2817                 if (defined $comment) {
2818                         print format_subject_html($comment, $comment_short,
2819                                                   href(action=>"tag", hash=>$tag{'id'}));
2820                 }
2821                 print "</td>\n" .
2822                       "<td class=\"selflink\">";
2823                 if ($tag{'type'} eq "tag") {
2824                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2825                 } else {
2826                         print "&nbsp;";
2827                 }
2828                 print "</td>\n" .
2829                       "<td class=\"link\">" . " | " .
2830                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2831                 if ($tag{'reftype'} eq "commit") {
2832                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2833                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2834                 } elsif ($tag{'reftype'} eq "blob") {
2835                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2836                 }
2837                 print "</td>\n" .
2838                       "</tr>";
2839         }
2840         if (defined $extra) {
2841                 print "<tr>\n" .
2842                       "<td colspan=\"5\">$extra</td>\n" .
2843                       "</tr>\n";
2844         }
2845         print "</table>\n";
2846 }
2847
2848 sub git_heads_body {
2849         # uses global variable $project
2850         my ($headlist, $head, $from, $to, $extra) = @_;
2851         $from = 0 unless defined $from;
2852         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2853
2854         print "<table class=\"heads\" cellspacing=\"0\">\n";
2855         my $alternate = 1;
2856         for (my $i = $from; $i <= $to; $i++) {
2857                 my $entry = $headlist->[$i];
2858                 my %ref = %$entry;
2859                 my $curr = $ref{'id'} eq $head;
2860                 if ($alternate) {
2861                         print "<tr class=\"dark\">\n";
2862                 } else {
2863                         print "<tr class=\"light\">\n";
2864                 }
2865                 $alternate ^= 1;
2866                 print "<td><i>$ref{'age'}</i></td>\n" .
2867                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2868                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2869                                -class => "list name"},esc_html($ref{'name'})) .
2870                       "</td>\n" .
2871                       "<td class=\"link\">" .
2872                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2873                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2874                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2875                       "</td>\n" .
2876                       "</tr>";
2877         }
2878         if (defined $extra) {
2879                 print "<tr>\n" .
2880                       "<td colspan=\"3\">$extra</td>\n" .
2881                       "</tr>\n";
2882         }
2883         print "</table>\n";
2884 }
2885
2886 sub git_search_grep_body {
2887         my ($commitlist, $from, $to, $extra) = @_;
2888         $from = 0 unless defined $from;
2889         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2890
2891         print "<table class=\"grep\" cellspacing=\"0\">\n";
2892         my $alternate = 1;
2893         for (my $i = $from; $i <= $to; $i++) {
2894                 my %co = %{$commitlist->[$i]};
2895                 if (!%co) {
2896                         next;
2897                 }
2898                 my $commit = $co{'id'};
2899                 if ($alternate) {
2900                         print "<tr class=\"dark\">\n";
2901                 } else {
2902                         print "<tr class=\"light\">\n";
2903                 }
2904                 $alternate ^= 1;
2905                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2906                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2907                       "<td>" .
2908                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2909                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2910                 my $comment = $co{'comment'};
2911                 foreach my $line (@$comment) {
2912                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2913                                 my $lead = esc_html($1) || "";
2914                                 $lead = chop_str($lead, 30, 10);
2915                                 my $match = esc_html($2) || "";
2916                                 my $trail = esc_html($3) || "";
2917                                 $trail = chop_str($trail, 30, 10);
2918                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2919                                 print chop_str($text, 80, 5) . "<br/>\n";
2920                         }
2921                 }
2922                 print "</td>\n" .
2923                       "<td class=\"link\">" .
2924                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2925                       " | " .
2926                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2927                 print "</td>\n" .
2928                       "</tr>\n";
2929         }
2930         if (defined $extra) {
2931                 print "<tr>\n" .
2932                       "<td colspan=\"3\">$extra</td>\n" .
2933                       "</tr>\n";
2934         }
2935         print "</table>\n";
2936 }
2937
2938 ## ======================================================================
2939 ## ======================================================================
2940 ## actions
2941
2942 sub git_project_list {
2943         my $order = $cgi->param('o');
2944         if (defined $order && $order !~ m/project|descr|owner|age/) {
2945                 die_error(undef, "Unknown order parameter");
2946         }
2947
2948         my @list = git_get_projects_list();
2949         if (!@list) {
2950                 die_error(undef, "No projects found");
2951         }
2952
2953         git_header_html();
2954         if (-f $home_text) {
2955                 print "<div class=\"index_include\">\n";
2956                 open (my $fd, $home_text);
2957                 print <$fd>;
2958                 close $fd;
2959                 print "</div>\n";
2960         }
2961         git_project_list_body(\@list, $order);
2962         git_footer_html();
2963 }
2964
2965 sub git_forks {
2966         my $order = $cgi->param('o');
2967         if (defined $order && $order !~ m/project|descr|owner|age/) {
2968                 die_error(undef, "Unknown order parameter");
2969         }
2970
2971         my @list = git_get_projects_list($project);
2972         if (!@list) {
2973                 die_error(undef, "No forks found");
2974         }
2975
2976         git_header_html();
2977         git_print_page_nav('','');
2978         git_print_header_div('summary', "$project forks");
2979         git_project_list_body(\@list, $order);
2980         git_footer_html();
2981 }
2982
2983 sub git_project_index {
2984         my @projects = git_get_projects_list($project);
2985
2986         print $cgi->header(
2987                 -type => 'text/plain',
2988                 -charset => 'utf-8',
2989                 -content_disposition => 'inline; filename="index.aux"');
2990
2991         foreach my $pr (@projects) {
2992                 if (!exists $pr->{'owner'}) {
2993                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2994                 }
2995
2996                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2997                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2998                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2999                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3000                 $path  =~ s/ /\+/g;
3001                 $owner =~ s/ /\+/g;
3002
3003                 print "$path $owner\n";
3004         }
3005 }
3006
3007 sub git_summary {
3008         my $descr = git_get_project_description($project) || "none";
3009         my %co = parse_commit("HEAD");
3010         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3011         my $head = $co{'id'};
3012
3013         my $owner = git_get_project_owner($project);
3014
3015         my $refs = git_get_references();
3016         # These get_*_list functions return one more to allow us to see if
3017         # there are more ...
3018         my @taglist  = git_get_tags_list(16);
3019         my @headlist = git_get_heads_list(16);
3020         my @forklist;
3021         my ($check_forks) = gitweb_check_feature('forks');
3022
3023         if ($check_forks) {
3024                 @forklist = git_get_projects_list($project);
3025         }
3026
3027         git_header_html();
3028         git_print_page_nav('summary','', $head);
3029
3030         print "<div class=\"title\">&nbsp;</div>\n";
3031         print "<table cellspacing=\"0\">\n" .
3032               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3033               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3034               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3035         # use per project git URL list in $projectroot/$project/cloneurl
3036         # or make project git URL from git base URL and project name
3037         my $url_tag = "URL";
3038         my @url_list = git_get_project_url_list($project);
3039         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3040         foreach my $git_url (@url_list) {
3041                 next unless $git_url;
3042                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3043                 $url_tag = "";
3044         }
3045         print "</table>\n";
3046
3047         if (-s "$projectroot/$project/README.html") {
3048                 if (open my $fd, "$projectroot/$project/README.html") {
3049                         print "<div class=\"title\">readme</div>\n";
3050                         print $_ while (<$fd>);
3051                         close $fd;
3052                 }
3053         }
3054
3055         # we need to request one more than 16 (0..15) to check if
3056         # those 16 are all
3057         my @commitlist = parse_commits($head, 17);
3058         git_print_header_div('shortlog');
3059         git_shortlog_body(\@commitlist, 0, 15, $refs,
3060                           $#commitlist <=  15 ? undef :
3061                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3062
3063         if (@taglist) {
3064                 git_print_header_div('tags');
3065                 git_tags_body(\@taglist, 0, 15,
3066                               $#taglist <=  15 ? undef :
3067                               $cgi->a({-href => href(action=>"tags")}, "..."));
3068         }
3069
3070         if (@headlist) {
3071                 git_print_header_div('heads');
3072                 git_heads_body(\@headlist, $head, 0, 15,
3073                                $#headlist <= 15 ? undef :
3074                                $cgi->a({-href => href(action=>"heads")}, "..."));
3075         }
3076
3077         if (@forklist) {
3078                 git_print_header_div('forks');
3079                 git_project_list_body(\@forklist, undef, 0, 15,
3080                                       $#forklist <= 15 ? undef :
3081                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3082                                       'noheader');
3083         }
3084
3085         git_footer_html();
3086 }
3087
3088 sub git_tag {
3089         my $head = git_get_head_hash($project);
3090         git_header_html();
3091         git_print_page_nav('','', $head,undef,$head);
3092         my %tag = parse_tag($hash);
3093         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3094         print "<div class=\"title_text\">\n" .
3095               "<table cellspacing=\"0\">\n" .
3096               "<tr>\n" .
3097               "<td>object</td>\n" .
3098               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3099                                $tag{'object'}) . "</td>\n" .
3100               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3101                                               $tag{'type'}) . "</td>\n" .
3102               "</tr>\n";
3103         if (defined($tag{'author'})) {
3104                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3105                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3106                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3107                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3108                         "</td></tr>\n";
3109         }
3110         print "</table>\n\n" .
3111               "</div>\n";
3112         print "<div class=\"page_body\">";
3113         my $comment = $tag{'comment'};
3114         foreach my $line (@$comment) {
3115                 chomp $line;
3116                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3117         }
3118         print "</div>\n";
3119         git_footer_html();
3120 }
3121
3122 sub git_blame2 {
3123         my $fd;
3124         my $ftype;
3125
3126         my ($have_blame) = gitweb_check_feature('blame');
3127         if (!$have_blame) {
3128                 die_error('403 Permission denied', "Permission denied");
3129         }
3130         die_error('404 Not Found', "File name not defined") if (!$file_name);
3131         $hash_base ||= git_get_head_hash($project);
3132         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3133         my %co = parse_commit($hash_base)
3134                 or die_error(undef, "Reading commit failed");
3135         if (!defined $hash) {
3136                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3137                         or die_error(undef, "Error looking up file");
3138         }
3139         $ftype = git_get_type($hash);
3140         if ($ftype !~ "blob") {
3141                 die_error("400 Bad Request", "Object is not a blob");
3142         }
3143         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3144               $file_name, $hash_base)
3145                 or die_error(undef, "Open git-blame failed");
3146         git_header_html();
3147         my $formats_nav =
3148                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3149                         "blob") .
3150                 " | " .
3151                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3152                         "history") .
3153                 " | " .
3154                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3155                         "HEAD");
3156         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3157         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3158         git_print_page_path($file_name, $ftype, $hash_base);
3159         my @rev_color = (qw(light2 dark2));
3160         my $num_colors = scalar(@rev_color);
3161         my $current_color = 0;
3162         my $last_rev;
3163         print <<HTML;
3164 <div class="page_body">
3165 <table class="blame">
3166 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3167 HTML
3168         my %metainfo = ();
3169         while (1) {
3170                 $_ = <$fd>;
3171                 last unless defined $_;
3172                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3173                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3174                 if (!exists $metainfo{$full_rev}) {
3175                         $metainfo{$full_rev} = {};
3176                 }
3177                 my $meta = $metainfo{$full_rev};
3178                 while (<$fd>) {
3179                         last if (s/^\t//);
3180                         if (/^(\S+) (.*)$/) {
3181                                 $meta->{$1} = $2;
3182                         }
3183                 }
3184                 my $data = $_;
3185                 chomp $data;
3186                 my $rev = substr($full_rev, 0, 8);
3187                 my $author = $meta->{'author'};
3188                 my %date = parse_date($meta->{'author-time'},
3189                                       $meta->{'author-tz'});
3190                 my $date = $date{'iso-tz'};
3191                 if ($group_size) {
3192                         $current_color = ++$current_color % $num_colors;
3193                 }
3194                 print "<tr class=\"$rev_color[$current_color]\">\n";
3195                 if ($group_size) {
3196                         print "<td class=\"sha1\"";
3197                         print " title=\"". esc_html($author) . ", $date\"";
3198                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3199                         print ">";
3200                         print $cgi->a({-href => href(action=>"commit",
3201                                                      hash=>$full_rev,
3202                                                      file_name=>$file_name)},
3203                                       esc_html($rev));
3204                         print "</td>\n";
3205                 }
3206                 my $blamed = href(action => 'blame',
3207                                   file_name => $meta->{'filename'},
3208                                   hash_base => $full_rev);
3209                 print "<td class=\"linenr\">";
3210                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3211                                 -id => "l$lineno",
3212                                 -class => "linenr" },
3213                               esc_html($lineno));
3214                 print "</td>";
3215                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3216                 print "</tr>\n";
3217         }
3218         print "</table>\n";
3219         print "</div>";
3220         close $fd
3221                 or print "Reading blob failed\n";
3222         git_footer_html();
3223 }
3224
3225 sub git_blame {
3226         my $fd;
3227
3228         my ($have_blame) = gitweb_check_feature('blame');
3229         if (!$have_blame) {
3230                 die_error('403 Permission denied', "Permission denied");
3231         }
3232         die_error('404 Not Found', "File name not defined") if (!$file_name);
3233         $hash_base ||= git_get_head_hash($project);
3234         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3235         my %co = parse_commit($hash_base)
3236                 or die_error(undef, "Reading commit failed");
3237         if (!defined $hash) {
3238                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3239                         or die_error(undef, "Error lookup file");
3240         }
3241         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3242                 or die_error(undef, "Open git-annotate failed");
3243         git_header_html();
3244         my $formats_nav =
3245                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3246                         "blob") .
3247                 " | " .
3248                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3249                         "history") .
3250                 " | " .
3251                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3252                         "HEAD");
3253         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3254         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3255         git_print_page_path($file_name, 'blob', $hash_base);
3256         print "<div class=\"page_body\">\n";
3257         print <<HTML;
3258 <table class="blame">
3259   <tr>
3260     <th>Commit</th>
3261     <th>Age</th>
3262     <th>Author</th>
3263     <th>Line</th>
3264     <th>Data</th>
3265   </tr>
3266 HTML
3267         my @line_class = (qw(light dark));
3268         my $line_class_len = scalar (@line_class);
3269         my $line_class_num = $#line_class;
3270         while (my $line = <$fd>) {
3271                 my $long_rev;
3272                 my $short_rev;
3273                 my $author;
3274                 my $time;
3275                 my $lineno;
3276                 my $data;
3277                 my $age;
3278                 my $age_str;
3279                 my $age_class;
3280
3281                 chomp $line;
3282                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3283
3284                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3285                         $long_rev = $1;
3286                         $author   = $2;
3287                         $time     = $3;
3288                         $lineno   = $4;
3289                         $data     = $5;
3290                 } else {
3291                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3292                         next;
3293                 }
3294                 $short_rev  = substr ($long_rev, 0, 8);
3295                 $age        = time () - $time;
3296                 $age_str    = age_string ($age);
3297                 $age_str    =~ s/ /&nbsp;/g;
3298                 $age_class  = age_class($age);
3299                 $author     = esc_html ($author);
3300                 $author     =~ s/ /&nbsp;/g;
3301
3302                 $data = untabify($data);
3303                 $data = esc_html ($data);
3304
3305                 print <<HTML;
3306   <tr class="$line_class[$line_class_num]">
3307     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3308     <td class="$age_class">$age_str</td>
3309     <td>$author</td>
3310     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3311     <td class="pre">$data</td>
3312   </tr>
3313 HTML
3314         } # while (my $line = <$fd>)
3315         print "</table>\n\n";
3316         close $fd
3317                 or print "Reading blob failed.\n";
3318         print "</div>";
3319         git_footer_html();
3320 }
3321
3322 sub git_tags {
3323         my $head = git_get_head_hash($project);
3324         git_header_html();
3325         git_print_page_nav('','', $head,undef,$head);
3326         git_print_header_div('summary', $project);
3327
3328         my @tagslist = git_get_tags_list();
3329         if (@tagslist) {
3330                 git_tags_body(\@tagslist);
3331         }
3332         git_footer_html();
3333 }
3334
3335 sub git_heads {
3336         my $head = git_get_head_hash($project);
3337         git_header_html();
3338         git_print_page_nav('','', $head,undef,$head);
3339         git_print_header_div('summary', $project);
3340
3341         my @headslist = git_get_heads_list();
3342         if (@headslist) {
3343                 git_heads_body(\@headslist, $head);
3344         }
3345         git_footer_html();
3346 }
3347
3348 sub git_blob_plain {
3349         my $expires;
3350
3351         if (!defined $hash) {
3352                 if (defined $file_name) {
3353                         my $base = $hash_base || git_get_head_hash($project);
3354                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3355                                 or die_error(undef, "Error lookup file");
3356                 } else {
3357                         die_error(undef, "No file name defined");
3358                 }
3359         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3360                 # blobs defined by non-textual hash id's can be cached
3361                 $expires = "+1d";
3362         }
3363
3364         my $type = shift;
3365         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3366                 or die_error(undef, "Couldn't cat $file_name, $hash");
3367
3368         $type ||= blob_mimetype($fd, $file_name);
3369
3370         # save as filename, even when no $file_name is given
3371         my $save_as = "$hash";
3372         if (defined $file_name) {
3373                 $save_as = $file_name;
3374         } elsif ($type =~ m/^text\//) {
3375                 $save_as .= '.txt';
3376         }
3377
3378         print $cgi->header(
3379                 -type => "$type",
3380                 -expires=>$expires,
3381                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3382         undef $/;
3383         binmode STDOUT, ':raw';
3384         print <$fd>;
3385         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3386         $/ = "\n";
3387         close $fd;
3388 }
3389
3390 sub git_blob {
3391         my $expires;
3392
3393         if (!defined $hash) {
3394                 if (defined $file_name) {
3395                         my $base = $hash_base || git_get_head_hash($project);
3396                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3397                                 or die_error(undef, "Error lookup file");
3398                 } else {
3399                         die_error(undef, "No file name defined");
3400                 }
3401         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3402                 # blobs defined by non-textual hash id's can be cached
3403                 $expires = "+1d";
3404         }
3405
3406         my ($have_blame) = gitweb_check_feature('blame');
3407         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3408                 or die_error(undef, "Couldn't cat $file_name, $hash");
3409         my $mimetype = blob_mimetype($fd, $file_name);
3410         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3411                 close $fd;
3412                 return git_blob_plain($mimetype);
3413         }
3414         # we can have blame only for text/* mimetype
3415         $have_blame &&= ($mimetype =~ m!^text/!);
3416
3417         git_header_html(undef, $expires);
3418         my $formats_nav = '';
3419         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3420                 if (defined $file_name) {
3421                         if ($have_blame) {
3422                                 $formats_nav .=
3423                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3424                                                                hash=>$hash, file_name=>$file_name)},
3425                                                 "blame") .
3426                                         " | ";
3427                         }
3428                         $formats_nav .=
3429                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3430                                                        hash=>$hash, file_name=>$file_name)},
3431                                         "history") .
3432                                 " | " .
3433                                 $cgi->a({-href => href(action=>"blob_plain",
3434                                                        hash=>$hash, file_name=>$file_name)},
3435                                         "raw") .
3436                                 " | " .
3437                                 $cgi->a({-href => href(action=>"blob",
3438                                                        hash_base=>"HEAD", file_name=>$file_name)},
3439                                         "HEAD");
3440                 } else {
3441                         $formats_nav .=
3442                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3443                 }
3444                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3445                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3446         } else {
3447                 print "<div class=\"page_nav\">\n" .
3448                       "<br/><br/></div>\n" .
3449                       "<div class=\"title\">$hash</div>\n";
3450         }
3451         git_print_page_path($file_name, "blob", $hash_base);
3452         print "<div class=\"page_body\">\n";
3453         if ($mimetype =~ m!^text/!) {
3454                 my $nr;
3455                 while (my $line = <$fd>) {
3456                         chomp $line;
3457                         $nr++;
3458                         $line = untabify($line);
3459                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3460                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3461                 }
3462         } elsif ($mimetype =~ m!^image/!) {
3463                 print qq!<img type="$mimetype"!;
3464                 if ($file_name) {
3465                         print qq! alt="$file_name" title="$file_name"!;
3466                 }
3467                 print qq! src="! .
3468                       href(action=>"blob_plain", hash=>$hash,
3469                            hash_base=>$hash_base, file_name=>$file_name) .
3470                       qq!" />\n!;
3471         }
3472         close $fd
3473                 or print "Reading blob failed.\n";
3474         print "</div>";
3475         git_footer_html();
3476 }
3477
3478 sub git_tree {
3479         my $have_snapshot = gitweb_have_snapshot();
3480
3481         if (!defined $hash_base) {
3482                 $hash_base = "HEAD";
3483         }
3484         if (!defined $hash) {
3485                 if (defined $file_name) {
3486                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3487                 } else {
3488                         $hash = $hash_base;
3489                 }
3490         }
3491         $/ = "\0";
3492         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3493                 or die_error(undef, "Open git-ls-tree failed");
3494         my @entries = map { chomp; $_ } <$fd>;
3495         close $fd or die_error(undef, "Reading tree failed");
3496         $/ = "\n";
3497
3498         my $refs = git_get_references();
3499         my $ref = format_ref_marker($refs, $hash_base);
3500         git_header_html();
3501         my $basedir = '';
3502         my ($have_blame) = gitweb_check_feature('blame');
3503         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3504                 my @views_nav = ();
3505                 if (defined $file_name) {
3506                         push @views_nav,
3507                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3508                                                        hash=>$hash, file_name=>$file_name)},
3509                                         "history"),
3510                                 $cgi->a({-href => href(action=>"tree",
3511                                                        hash_base=>"HEAD", file_name=>$file_name)},
3512                                         "HEAD"),
3513                 }
3514                 if ($have_snapshot) {
3515                         # FIXME: Should be available when we have no hash base as well.
3516                         push @views_nav,
3517                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3518                                         "snapshot");
3519                 }
3520                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3521                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3522         } else {
3523                 undef $hash_base;
3524                 print "<div class=\"page_nav\">\n";
3525                 print "<br/><br/></div>\n";
3526                 print "<div class=\"title\">$hash</div>\n";
3527         }
3528         if (defined $file_name) {
3529                 $basedir = $file_name;
3530                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3531                         $basedir .= '/';
3532                 }
3533         }
3534         git_print_page_path($file_name, 'tree', $hash_base);
3535         print "<div class=\"page_body\">\n";
3536         print "<table cellspacing=\"0\">\n";
3537         my $alternate = 1;
3538         # '..' (top directory) link if possible
3539         if (defined $hash_base &&
3540             defined $file_name && $file_name =~ m![^/]+$!) {
3541                 if ($alternate) {
3542                         print "<tr class=\"dark\">\n";
3543                 } else {
3544                         print "<tr class=\"light\">\n";
3545                 }
3546                 $alternate ^= 1;
3547
3548                 my $up = $file_name;
3549                 $up =~ s!/?[^/]+$!!;
3550                 undef $up unless $up;
3551                 # based on git_print_tree_entry
3552                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3553                 print '<td class="list">';
3554                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3555                                              file_name=>$up)},
3556                               "..");
3557                 print "</td>\n";
3558                 print "<td class=\"link\"></td>\n";
3559
3560                 print "</tr>\n";
3561         }
3562         foreach my $line (@entries) {
3563                 my %t = parse_ls_tree_line($line, -z => 1);
3564
3565                 if ($alternate) {
3566                         print "<tr class=\"dark\">\n";
3567                 } else {
3568                         print "<tr class=\"light\">\n";
3569                 }
3570                 $alternate ^= 1;
3571
3572                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3573
3574                 print "</tr>\n";
3575         }
3576         print "</table>\n" .
3577               "</div>";
3578         git_footer_html();
3579 }
3580
3581 sub git_snapshot {
3582         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3583         my $have_snapshot = (defined $ctype && defined $suffix);
3584         if (!$have_snapshot) {
3585                 die_error('403 Permission denied', "Permission denied");
3586         }
3587
3588         if (!defined $hash) {
3589                 $hash = git_get_head_hash($project);
3590         }
3591
3592         my $filename = basename($project) . "-$hash.tar.$suffix";
3593
3594         print $cgi->header(
3595                 -type => "application/$ctype",
3596                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3597                 -status => '200 OK');
3598
3599         my $git = git_cmd_str();
3600         my $name = $project;
3601         $name =~ s/\047/\047\\\047\047/g;
3602         open my $fd, "-|",
3603         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3604                 or die_error(undef, "Execute git-tar-tree failed.");
3605         binmode STDOUT, ':raw';
3606         print <$fd>;
3607         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3608         close $fd;
3609
3610 }
3611
3612 sub git_log {
3613         my $head = git_get_head_hash($project);
3614         if (!defined $hash) {
3615                 $hash = $head;
3616         }
3617         if (!defined $page) {
3618                 $page = 0;
3619         }
3620         my $refs = git_get_references();
3621
3622         my @commitlist = parse_commits($hash, 101, (100 * $page));
3623
3624         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3625
3626         git_header_html();
3627         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3628
3629         if (!@commitlist) {
3630                 my %co = parse_commit($hash);
3631
3632                 git_print_header_div('summary', $project);
3633                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3634         }
3635         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3636         for (my $i = 0; $i <= $to; $i++) {
3637                 my %co = %{$commitlist[$i]};
3638                 next if !%co;
3639                 my $commit = $co{'id'};
3640                 my $ref = format_ref_marker($refs, $commit);
3641                 my %ad = parse_date($co{'author_epoch'});
3642                 git_print_header_div('commit',
3643                                "<span class=\"age\">$co{'age_string'}</span>" .
3644                                esc_html($co{'title'}) . $ref,
3645                                $commit);
3646                 print "<div class=\"title_text\">\n" .
3647                       "<div class=\"log_link\">\n" .
3648                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3649                       " | " .
3650                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3651                       " | " .
3652                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3653                       "<br/>\n" .
3654                       "</div>\n" .
3655                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3656                       "</div>\n";
3657
3658                 print "<div class=\"log_body\">\n";
3659                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3660                 print "</div>\n";
3661         }
3662         if ($#commitlist >= 100) {
3663                 print "<div class=\"page_nav\">\n";
3664                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3665                                -accesskey => "n", -title => "Alt-n"}, "next");
3666                 print "</div>\n";
3667         }
3668         git_footer_html();
3669 }
3670
3671 sub git_commit {
3672         $hash ||= $hash_base || "HEAD";
3673         my %co = parse_commit($hash);
3674         if (!%co) {
3675                 die_error(undef, "Unknown commit object");
3676         }
3677         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3678         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3679
3680         my $parent  = $co{'parent'};
3681         my $parents = $co{'parents'}; # listref
3682
3683         # we need to prepare $formats_nav before any parameter munging
3684         my $formats_nav;
3685         if (!defined $parent) {
3686                 # --root commitdiff
3687                 $formats_nav .= '(initial)';
3688         } elsif (@$parents == 1) {
3689                 # single parent commit
3690                 $formats_nav .=
3691                         '(parent: ' .
3692                         $cgi->a({-href => href(action=>"commit",
3693                                                hash=>$parent)},
3694                                 esc_html(substr($parent, 0, 7))) .
3695                         ')';
3696         } else {
3697                 # merge commit
3698                 $formats_nav .=
3699                         '(merge: ' .
3700                         join(' ', map {
3701                                 $cgi->a({-href => href(action=>"commitdiff",
3702                                                        hash=>$_)},
3703                                         esc_html(substr($_, 0, 7)));
3704                         } @$parents ) .
3705                         ')';
3706         }
3707
3708         if (!defined $parent) {
3709                 $parent = "--root";
3710         }
3711         my @difftree;
3712         if (@$parents <= 1) {
3713                 # difftree output is not printed for merges
3714                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3715                         @diff_opts, $parent, $hash, "--"
3716                                 or die_error(undef, "Open git-diff-tree failed");
3717                 @difftree = map { chomp; $_ } <$fd>;
3718                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3719         }
3720
3721         # non-textual hash id's can be cached
3722         my $expires;
3723         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3724                 $expires = "+1d";
3725         }
3726         my $refs = git_get_references();
3727         my $ref = format_ref_marker($refs, $co{'id'});
3728
3729         my $have_snapshot = gitweb_have_snapshot();
3730
3731         git_header_html(undef, $expires);
3732         git_print_page_nav('commit', '',
3733                            $hash, $co{'tree'}, $hash,
3734                            $formats_nav);
3735
3736         if (defined $co{'parent'}) {
3737                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3738         } else {
3739                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3740         }
3741         print "<div class=\"title_text\">\n" .
3742               "<table cellspacing=\"0\">\n";
3743         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3744               "<tr>" .
3745               "<td></td><td> $ad{'rfc2822'}";
3746         if ($ad{'hour_local'} < 6) {
3747                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3748                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3749         } else {
3750                 printf(" (%02d:%02d %s)",
3751                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3752         }
3753         print "</td>" .
3754               "</tr>\n";
3755         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3756         print "<tr><td></td><td> $cd{'rfc2822'}" .
3757               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3758               "</td></tr>\n";
3759         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3760         print "<tr>" .
3761               "<td>tree</td>" .
3762               "<td class=\"sha1\">" .
3763               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3764                        class => "list"}, $co{'tree'}) .
3765               "</td>" .
3766               "<td class=\"link\">" .
3767               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3768                       "tree");
3769         if ($have_snapshot) {
3770                 print " | " .
3771                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3772         }
3773         print "</td>" .
3774               "</tr>\n";
3775
3776         foreach my $par (@$parents) {
3777                 print "<tr>" .
3778                       "<td>parent</td>" .
3779                       "<td class=\"sha1\">" .
3780                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3781                                class => "list"}, $par) .
3782                       "</td>" .
3783                       "<td class=\"link\">" .
3784                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3785                       " | " .
3786                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3787                       "</td>" .
3788                       "</tr>\n";
3789         }
3790         print "</table>".
3791               "</div>\n";
3792
3793         print "<div class=\"page_body\">\n";
3794         git_print_log($co{'comment'});
3795         print "</div>\n";
3796
3797         if (@$parents <= 1) {
3798                 # do not output difftree/whatchanged for merges
3799                 git_difftree_body(\@difftree, $hash, $parent);
3800         }
3801
3802         git_footer_html();
3803 }
3804
3805 sub git_object {
3806         # object is defined by:
3807         # - hash or hash_base alone
3808         # - hash_base and file_name
3809         my $type;
3810
3811         # - hash or hash_base alone
3812         if ($hash || ($hash_base && !defined $file_name)) {
3813                 my $object_id = $hash || $hash_base;
3814
3815                 my $git_command = git_cmd_str();
3816                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3817                         or die_error('404 Not Found', "Object does not exist");
3818                 $type = <$fd>;
3819                 chomp $type;
3820                 close $fd
3821                         or die_error('404 Not Found', "Object does not exist");
3822
3823         # - hash_base and file_name
3824         } elsif ($hash_base && defined $file_name) {
3825                 $file_name =~ s,/+$,,;
3826
3827                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3828                         or die_error('404 Not Found', "Base object does not exist");
3829
3830                 # here errors should not hapen
3831                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3832                         or die_error(undef, "Open git-ls-tree failed");
3833                 my $line = <$fd>;
3834                 close $fd;
3835
3836                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3837                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3838                         die_error('404 Not Found', "File or directory for given base does not exist");
3839                 }
3840                 $type = $2;
3841                 $hash = $3;
3842         } else {
3843                 die_error('404 Not Found', "Not enough information to find object");
3844         }
3845
3846         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3847                                           hash=>$hash, hash_base=>$hash_base,
3848                                           file_name=>$file_name),
3849                              -status => '302 Found');
3850 }
3851
3852 sub git_blobdiff {
3853         my $format = shift || 'html';
3854
3855         my $fd;
3856         my @difftree;
3857         my %diffinfo;
3858         my $expires;
3859
3860         # preparing $fd and %diffinfo for git_patchset_body
3861         # new style URI
3862         if (defined $hash_base && defined $hash_parent_base) {
3863                 if (defined $file_name) {
3864                         # read raw output
3865                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3866                                 $hash_parent_base, $hash_base,
3867                                 "--", $file_name
3868                                 or die_error(undef, "Open git-diff-tree failed");
3869                         @difftree = map { chomp; $_ } <$fd>;
3870                         close $fd
3871                                 or die_error(undef, "Reading git-diff-tree failed");
3872                         @difftree
3873                                 or die_error('404 Not Found', "Blob diff not found");
3874
3875                 } elsif (defined $hash &&
3876                          $hash =~ /[0-9a-fA-F]{40}/) {
3877                         # try to find filename from $hash
3878
3879                         # read filtered raw output
3880                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3881                                 $hash_parent_base, $hash_base, "--"
3882                                 or die_error(undef, "Open git-diff-tree failed");
3883                         @difftree =
3884                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3885                                 # $hash == to_id
3886                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3887                                 map { chomp; $_ } <$fd>;
3888                         close $fd
3889                                 or die_error(undef, "Reading git-diff-tree failed");
3890                         @difftree
3891                                 or die_error('404 Not Found', "Blob diff not found");
3892
3893                 } else {
3894                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3895                 }
3896
3897                 if (@difftree > 1) {
3898                         die_error('404 Not Found', "Ambiguous blob diff specification");
3899                 }
3900
3901                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3902                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3903                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3904
3905                 $hash_parent ||= $diffinfo{'from_id'};
3906                 $hash        ||= $diffinfo{'to_id'};
3907
3908                 # non-textual hash id's can be cached
3909                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3910                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3911                         $expires = '+1d';
3912                 }
3913
3914                 # open patch output
3915                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3916                         '-p', $hash_parent_base, $hash_base,
3917                         "--", $file_name
3918                         or die_error(undef, "Open git-diff-tree failed");
3919         }
3920
3921         # old/legacy style URI
3922         if (!%diffinfo && # if new style URI failed
3923             defined $hash && defined $hash_parent) {
3924                 # fake git-diff-tree raw output
3925                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3926                 $diffinfo{'from_id'} = $hash_parent;
3927                 $diffinfo{'to_id'}   = $hash;
3928                 if (defined $file_name) {
3929                         if (defined $file_parent) {
3930                                 $diffinfo{'status'} = '2';
3931                                 $diffinfo{'from_file'} = $file_parent;
3932                                 $diffinfo{'to_file'}   = $file_name;
3933                         } else { # assume not renamed
3934                                 $diffinfo{'status'} = '1';
3935                                 $diffinfo{'from_file'} = $file_name;
3936                                 $diffinfo{'to_file'}   = $file_name;
3937                         }
3938                 } else { # no filename given
3939                         $diffinfo{'status'} = '2';
3940                         $diffinfo{'from_file'} = $hash_parent;
3941                         $diffinfo{'to_file'}   = $hash;
3942                 }
3943
3944                 # non-textual hash id's can be cached
3945                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3946                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3947                         $expires = '+1d';
3948                 }
3949
3950                 # open patch output
3951                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3952                         $hash_parent, $hash, "--"
3953                         or die_error(undef, "Open git-diff failed");
3954         } else  {
3955                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3956                         unless %diffinfo;
3957         }
3958
3959         # header
3960         if ($format eq 'html') {
3961                 my $formats_nav =
3962                         $cgi->a({-href => href(action=>"blobdiff_plain",
3963                                                hash=>$hash, hash_parent=>$hash_parent,
3964                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3965                                                file_name=>$file_name, file_parent=>$file_parent)},
3966                                 "raw");
3967                 git_header_html(undef, $expires);
3968                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3969                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3970                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3971                 } else {
3972                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3973                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3974                 }
3975                 if (defined $file_name) {
3976                         git_print_page_path($file_name, "blob", $hash_base);
3977                 } else {
3978                         print "<div class=\"page_path\"></div>\n";
3979                 }
3980
3981         } elsif ($format eq 'plain') {
3982                 print $cgi->header(
3983                         -type => 'text/plain',
3984                         -charset => 'utf-8',
3985                         -expires => $expires,
3986                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3987
3988                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3989
3990         } else {
3991                 die_error(undef, "Unknown blobdiff format");
3992         }
3993
3994         # patch
3995         if ($format eq 'html') {
3996                 print "<div class=\"page_body\">\n";
3997
3998                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3999                 close $fd;
4000
4001                 print "</div>\n"; # class="page_body"
4002                 git_footer_html();
4003
4004         } else {
4005                 while (my $line = <$fd>) {
4006                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4007                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4008
4009                         print $line;
4010
4011                         last if $line =~ m!^\+\+\+!;
4012                 }
4013                 local $/ = undef;
4014                 print <$fd>;
4015                 close $fd;
4016         }
4017 }
4018
4019 sub git_blobdiff_plain {
4020         git_blobdiff('plain');
4021 }
4022
4023 sub git_commitdiff {
4024         my $format = shift || 'html';
4025         $hash ||= $hash_base || "HEAD";
4026         my %co = parse_commit($hash);
4027         if (!%co) {
4028                 die_error(undef, "Unknown commit object");
4029         }
4030
4031         # we need to prepare $formats_nav before any parameter munging
4032         my $formats_nav;
4033         if ($format eq 'html') {
4034                 $formats_nav =
4035                         $cgi->a({-href => href(action=>"commitdiff_plain",
4036                                                hash=>$hash, hash_parent=>$hash_parent)},
4037                                 "raw");
4038
4039                 if (defined $hash_parent) {
4040                         # commitdiff with two commits given
4041                         my $hash_parent_short = $hash_parent;
4042                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4043                                 $hash_parent_short = substr($hash_parent, 0, 7);
4044                         }
4045                         $formats_nav .=
4046                                 ' (from: ' .
4047                                 $cgi->a({-href => href(action=>"commitdiff",
4048                                                        hash=>$hash_parent)},
4049                                         esc_html($hash_parent_short)) .
4050                                 ')';
4051                 } elsif (!$co{'parent'}) {
4052                         # --root commitdiff
4053                         $formats_nav .= ' (initial)';
4054                 } elsif (scalar @{$co{'parents'}} == 1) {
4055                         # single parent commit
4056                         $formats_nav .=
4057                                 ' (parent: ' .
4058                                 $cgi->a({-href => href(action=>"commitdiff",
4059                                                        hash=>$co{'parent'})},
4060                                         esc_html(substr($co{'parent'}, 0, 7))) .
4061                                 ')';
4062                 } else {
4063                         # merge commit
4064                         $formats_nav .=
4065                                 ' (merge: ' .
4066                                 join(' ', map {
4067                                         $cgi->a({-href => href(action=>"commitdiff",
4068                                                                hash=>$_)},
4069                                                 esc_html(substr($_, 0, 7)));
4070                                 } @{$co{'parents'}} ) .
4071                                 ')';
4072                 }
4073         }
4074
4075         if (!defined $hash_parent) {
4076                 $hash_parent = $co{'parent'} || '--root';
4077         }
4078
4079         # read commitdiff
4080         my $fd;
4081         my @difftree;
4082         if ($format eq 'html') {
4083                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4084                         "--no-commit-id", "--patch-with-raw", "--full-index",
4085                         $hash_parent, $hash, "--"
4086                         or die_error(undef, "Open git-diff-tree failed");
4087
4088                 while (my $line = <$fd>) {
4089                         chomp $line;
4090                         # empty line ends raw part of diff-tree output
4091                         last unless $line;
4092                         push @difftree, $line;
4093                 }
4094
4095         } elsif ($format eq 'plain') {
4096                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4097                         '-p', $hash_parent, $hash, "--"
4098                         or die_error(undef, "Open git-diff-tree failed");
4099
4100         } else {
4101                 die_error(undef, "Unknown commitdiff format");
4102         }
4103
4104         # non-textual hash id's can be cached
4105         my $expires;
4106         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4107                 $expires = "+1d";
4108         }
4109
4110         # write commit message
4111         if ($format eq 'html') {
4112                 my $refs = git_get_references();
4113                 my $ref = format_ref_marker($refs, $co{'id'});
4114
4115                 git_header_html(undef, $expires);
4116                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4117                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4118                 git_print_authorship(\%co);
4119                 print "<div class=\"page_body\">\n";
4120                 if (@{$co{'comment'}} > 1) {
4121                         print "<div class=\"log\">\n";
4122                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4123                         print "</div>\n"; # class="log"
4124                 }
4125
4126         } elsif ($format eq 'plain') {
4127                 my $refs = git_get_references("tags");
4128                 my $tagname = git_get_rev_name_tags($hash);
4129                 my $filename = basename($project) . "-$hash.patch";
4130
4131                 print $cgi->header(
4132                         -type => 'text/plain',
4133                         -charset => 'utf-8',
4134                         -expires => $expires,
4135                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4136                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4137                 print <<TEXT;
4138 From: $co{'author'}
4139 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4140 Subject: $co{'title'}
4141 TEXT
4142                 print "X-Git-Tag: $tagname\n" if $tagname;
4143                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4144
4145                 foreach my $line (@{$co{'comment'}}) {
4146                         print "$line\n";
4147                 }
4148                 print "---\n\n";
4149         }
4150
4151         # write patch
4152         if ($format eq 'html') {
4153                 git_difftree_body(\@difftree, $hash, $hash_parent);
4154                 print "<br/>\n";
4155
4156                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4157                 close $fd;
4158                 print "</div>\n"; # class="page_body"
4159                 git_footer_html();
4160
4161         } elsif ($format eq 'plain') {
4162                 local $/ = undef;
4163                 print <$fd>;
4164                 close $fd
4165                         or print "Reading git-diff-tree failed\n";
4166         }
4167 }
4168
4169 sub git_commitdiff_plain {
4170         git_commitdiff('plain');
4171 }
4172
4173 sub git_history {
4174         if (!defined $hash_base) {
4175                 $hash_base = git_get_head_hash($project);
4176         }
4177         if (!defined $page) {
4178                 $page = 0;
4179         }
4180         my $ftype;
4181         my %co = parse_commit($hash_base);
4182         if (!%co) {
4183                 die_error(undef, "Unknown commit object");
4184         }
4185
4186         my $refs = git_get_references();
4187         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4188
4189         if (!defined $hash && defined $file_name) {
4190                 $hash = git_get_hash_by_path($hash_base, $file_name);
4191         }
4192         if (defined $hash) {
4193                 $ftype = git_get_type($hash);
4194         }
4195
4196         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4197
4198         my $paging_nav = '';
4199         if ($page > 0) {
4200                 $paging_nav .=
4201                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4202                                                file_name=>$file_name)},
4203                                 "first");
4204                 $paging_nav .= " &sdot; " .
4205                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4206                                                file_name=>$file_name, page=>$page-1),
4207                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4208         } else {
4209                 $paging_nav .= "first";
4210                 $paging_nav .= " &sdot; prev";
4211         }
4212         if ($#commitlist >= 100) {
4213                 $paging_nav .= " &sdot; " .
4214                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4215                                                file_name=>$file_name, page=>$page+1),
4216                                  -accesskey => "n", -title => "Alt-n"}, "next");
4217         } else {
4218                 $paging_nav .= " &sdot; next";
4219         }
4220         my $next_link = '';
4221         if ($#commitlist >= 100) {
4222                 $next_link =
4223                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4224                                                file_name=>$file_name, page=>$page+1),
4225                                  -accesskey => "n", -title => "Alt-n"}, "next");
4226         }
4227
4228         git_header_html();
4229         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4230         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4231         git_print_page_path($file_name, $ftype, $hash_base);
4232
4233         git_history_body(\@commitlist, 0, 99,
4234                          $refs, $hash_base, $ftype, $next_link);
4235
4236         git_footer_html();
4237 }
4238
4239 sub git_search {
4240         my ($have_search) = gitweb_check_feature('search');
4241         if (!$have_search) {
4242                 die_error('403 Permission denied', "Permission denied");
4243         }
4244         if (!defined $searchtext) {
4245                 die_error(undef, "Text field empty");
4246         }
4247         if (!defined $hash) {
4248                 $hash = git_get_head_hash($project);
4249         }
4250         my %co = parse_commit($hash);
4251         if (!%co) {
4252                 die_error(undef, "Unknown commit object");
4253         }
4254         if (!defined $page) {
4255                 $page = 0;
4256         }
4257
4258         $searchtype ||= 'commit';
4259         if ($searchtype eq 'pickaxe') {
4260                 # pickaxe may take all resources of your box and run for several minutes
4261                 # with every query - so decide by yourself how public you make this feature
4262                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4263                 if (!$have_pickaxe) {
4264                         die_error('403 Permission denied', "Permission denied");
4265                 }
4266         }
4267
4268         git_header_html();
4269
4270         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4271                 my $greptype;
4272                 if ($searchtype eq 'commit') {
4273                         $greptype = "--grep=";
4274                 } elsif ($searchtype eq 'author') {
4275                         $greptype = "--author=";
4276                 } elsif ($searchtype eq 'committer') {
4277                         $greptype = "--committer=";
4278                 }
4279                 $greptype .= $searchtext;
4280                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4281
4282                 my $paging_nav = '';
4283                 if ($page > 0) {
4284                         $paging_nav .=
4285                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4286                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4287                                         "first");
4288                         $paging_nav .= " &sdot; " .
4289                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4290                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4291                                                        page=>$page-1),
4292                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4293                 } else {
4294                         $paging_nav .= "first";
4295                         $paging_nav .= " &sdot; prev";
4296                 }
4297                 if ($#commitlist >= 100) {
4298                         $paging_nav .= " &sdot; " .
4299                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4300                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4301                                                        page=>$page+1),
4302                                          -accesskey => "n", -title => "Alt-n"}, "next");
4303                 } else {
4304                         $paging_nav .= " &sdot; next";
4305                 }
4306                 my $next_link = '';
4307                 if ($#commitlist >= 100) {
4308                         $next_link =
4309                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4310                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4311                                                        page=>$page+1),
4312                                          -accesskey => "n", -title => "Alt-n"}, "next");
4313                 }
4314
4315                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4316                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4317                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4318         }
4319
4320         if ($searchtype eq 'pickaxe') {
4321                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4322                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4323
4324                 print "<table cellspacing=\"0\">\n";
4325                 my $alternate = 1;
4326                 $/ = "\n";
4327                 my $git_command = git_cmd_str();
4328                 open my $fd, "-|", "$git_command rev-list $hash | " .
4329                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4330                 undef %co;
4331                 my @files;
4332                 while (my $line = <$fd>) {
4333                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4334                                 my %set;
4335                                 $set{'file'} = $6;
4336                                 $set{'from_id'} = $3;
4337                                 $set{'to_id'} = $4;
4338                                 $set{'id'} = $set{'to_id'};
4339                                 if ($set{'id'} =~ m/0{40}/) {
4340                                         $set{'id'} = $set{'from_id'};
4341                                 }
4342                                 if ($set{'id'} =~ m/0{40}/) {
4343                                         next;
4344                                 }
4345                                 push @files, \%set;
4346                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4347                                 if (%co) {
4348                                         if ($alternate) {
4349                                                 print "<tr class=\"dark\">\n";
4350                                         } else {
4351                                                 print "<tr class=\"light\">\n";
4352                                         }
4353                                         $alternate ^= 1;
4354                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4355                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4356                                               "<td>" .
4357                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4358                                                       -class => "list subject"},
4359                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4360                                         while (my $setref = shift @files) {
4361                                                 my %set = %$setref;
4362                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4363                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4364                                                               -class => "list"},
4365                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4366                                                       "<br/>\n";
4367                                         }
4368                                         print "</td>\n" .
4369                                               "<td class=\"link\">" .
4370                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4371                                               " | " .
4372                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4373                                         print "</td>\n" .
4374                                               "</tr>\n";
4375                                 }
4376                                 %co = parse_commit($1);
4377                         }
4378                 }
4379                 close $fd;
4380
4381                 print "</table>\n";
4382         }
4383         git_footer_html();
4384 }
4385
4386 sub git_search_help {
4387         git_header_html();
4388         git_print_page_nav('','', $hash,$hash,$hash);
4389         print <<EOT;
4390 <dl>
4391 <dt><b>commit</b></dt>
4392 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4393 <dt><b>author</b></dt>
4394 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4395 <dt><b>committer</b></dt>
4396 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4397 EOT
4398         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4399         if ($have_pickaxe) {
4400                 print <<EOT;
4401 <dt><b>pickaxe</b></dt>
4402 <dd>All commits that caused the string to appear or disappear from any file (changes that
4403 added, removed or "modified" the string) will be listed. This search can take a while and
4404 takes a lot of strain on the server, so please use it wisely.</dd>
4405 EOT
4406         }
4407         print "</dl>\n";
4408         git_footer_html();
4409 }
4410
4411 sub git_shortlog {
4412         my $head = git_get_head_hash($project);
4413         if (!defined $hash) {
4414                 $hash = $head;
4415         }
4416         if (!defined $page) {
4417                 $page = 0;
4418         }
4419         my $refs = git_get_references();
4420
4421         my @commitlist = parse_commits($head, 101, (100 * $page));
4422
4423         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4424         my $next_link = '';
4425         if ($#commitlist >= 100) {
4426                 $next_link =
4427                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4428                                  -accesskey => "n", -title => "Alt-n"}, "next");
4429         }
4430
4431         git_header_html();
4432         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4433         git_print_header_div('summary', $project);
4434
4435         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4436
4437         git_footer_html();
4438 }
4439
4440 ## ......................................................................
4441 ## feeds (RSS, Atom; OPML)
4442
4443 sub git_feed {
4444         my $format = shift || 'atom';
4445         my ($have_blame) = gitweb_check_feature('blame');
4446
4447         # Atom: http://www.atomenabled.org/developers/syndication/
4448         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4449         if ($format ne 'rss' && $format ne 'atom') {
4450                 die_error(undef, "Unknown web feed format");
4451         }
4452
4453         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4454         my $head = $hash || 'HEAD';
4455         my @commitlist = parse_commits($head, 150);
4456
4457         my %latest_commit;
4458         my %latest_date;
4459         my $content_type = "application/$format+xml";
4460         if (defined $cgi->http('HTTP_ACCEPT') &&
4461                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4462                 # browser (feed reader) prefers text/xml
4463                 $content_type = 'text/xml';
4464         }
4465         if (defined($commitlist[0])) {
4466                 %latest_commit = %{$commitlist[0]};
4467                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4468                 print $cgi->header(
4469                         -type => $content_type,
4470                         -charset => 'utf-8',
4471                         -last_modified => $latest_date{'rfc2822'});
4472         } else {
4473                 print $cgi->header(
4474                         -type => $content_type,
4475                         -charset => 'utf-8');
4476         }
4477
4478         # Optimization: skip generating the body if client asks only
4479         # for Last-Modified date.
4480         return if ($cgi->request_method() eq 'HEAD');
4481
4482         # header variables
4483         my $title = "$site_name - $project/$action";
4484         my $feed_type = 'log';
4485         if (defined $hash) {
4486                 $title .= " - '$hash'";
4487                 $feed_type = 'branch log';
4488                 if (defined $file_name) {
4489                         $title .= " :: $file_name";
4490                         $feed_type = 'history';
4491                 }
4492         } elsif (defined $file_name) {
4493                 $title .= " - $file_name";
4494                 $feed_type = 'history';
4495         }
4496         $title .= " $feed_type";
4497         my $descr = git_get_project_description($project);
4498         if (defined $descr) {
4499                 $descr = esc_html($descr);
4500         } else {
4501                 $descr = "$project " .
4502                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4503                          " feed";
4504         }
4505         my $owner = git_get_project_owner($project);
4506         $owner = esc_html($owner);
4507
4508         #header
4509         my $alt_url;
4510         if (defined $file_name) {
4511                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4512         } elsif (defined $hash) {
4513                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4514         } else {
4515                 $alt_url = href(-full=>1, action=>"summary");
4516         }
4517         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4518         if ($format eq 'rss') {
4519                 print <<XML;
4520 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4521 <channel>
4522 XML
4523                 print "<title>$title</title>\n" .
4524                       "<link>$alt_url</link>\n" .
4525                       "<description>$descr</description>\n" .
4526                       "<language>en</language>\n";
4527         } elsif ($format eq 'atom') {
4528                 print <<XML;
4529 <feed xmlns="http://www.w3.org/2005/Atom">
4530 XML
4531                 print "<title>$title</title>\n" .
4532                       "<subtitle>$descr</subtitle>\n" .
4533                       '<link rel="alternate" type="text/html" href="' .
4534                       $alt_url . '" />' . "\n" .
4535                       '<link rel="self" type="' . $content_type . '" href="' .
4536                       $cgi->self_url() . '" />' . "\n" .
4537                       "<id>" . href(-full=>1) . "</id>\n" .
4538                       # use project owner for feed author
4539                       "<author><name>$owner</name></author>\n";
4540                 if (defined $favicon) {
4541                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4542                 }
4543                 if (defined $logo_url) {
4544                         # not twice as wide as tall: 72 x 27 pixels
4545                         print "<logo>" . esc_url($logo) . "</logo>\n";
4546                 }
4547                 if (! %latest_date) {
4548                         # dummy date to keep the feed valid until commits trickle in:
4549                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4550                 } else {
4551                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4552                 }
4553         }
4554
4555         # contents
4556         for (my $i = 0; $i <= $#commitlist; $i++) {
4557                 my %co = %{$commitlist[$i]};
4558                 my $commit = $co{'id'};
4559                 # we read 150, we always show 30 and the ones more recent than 48 hours
4560                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4561                         last;
4562                 }
4563                 my %cd = parse_date($co{'author_epoch'});
4564
4565                 # get list of changed files
4566                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4567                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4568                         or next;
4569                 my @difftree = map { chomp; $_ } <$fd>;
4570                 close $fd
4571                         or next;
4572
4573                 # print element (entry, item)
4574                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4575                 if ($format eq 'rss') {
4576                         print "<item>\n" .
4577                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4578                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4579                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4580                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4581                               "<link>$co_url</link>\n" .
4582                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4583                               "<content:encoded>" .
4584                               "<![CDATA[\n";
4585                 } elsif ($format eq 'atom') {
4586                         print "<entry>\n" .
4587                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4588                               "<updated>$cd{'iso-8601'}</updated>\n" .
4589                               "<author>\n" .
4590                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4591                         if ($co{'author_email'}) {
4592                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4593                         }
4594                         print "</author>\n" .
4595                               # use committer for contributor
4596                               "<contributor>\n" .
4597                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4598                         if ($co{'committer_email'}) {
4599                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4600                         }
4601                         print "</contributor>\n" .
4602                               "<published>$cd{'iso-8601'}</published>\n" .
4603                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4604                               "<id>$co_url</id>\n" .
4605                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4606                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4607                 }
4608                 my $comment = $co{'comment'};
4609                 print "<pre>\n";
4610                 foreach my $line (@$comment) {
4611                         $line = esc_html($line);
4612                         print "$line\n";
4613                 }
4614                 print "</pre><ul>\n";
4615                 foreach my $difftree_line (@difftree) {
4616                         my %difftree = parse_difftree_raw_line($difftree_line);
4617                         next if !$difftree{'from_id'};
4618
4619                         my $file = $difftree{'file'} || $difftree{'to_file'};
4620
4621                         print "<li>" .
4622                               "[" .
4623                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4624                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4625                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4626                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4627                                       -title => "diff"}, 'D');
4628                         if ($have_blame) {
4629                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4630                                                              file_name=>$file, hash_base=>$commit),
4631                                               -title => "blame"}, 'B');
4632                         }
4633                         # if this is not a feed of a file history
4634                         if (!defined $file_name || $file_name ne $file) {
4635                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4636                                                              file_name=>$file, hash=>$commit),
4637                                               -title => "history"}, 'H');
4638                         }
4639                         $file = esc_path($file);
4640                         print "] ".
4641                               "$file</li>\n";
4642                 }
4643                 if ($format eq 'rss') {
4644                         print "</ul>]]>\n" .
4645                               "</content:encoded>\n" .
4646                               "</item>\n";
4647                 } elsif ($format eq 'atom') {
4648                         print "</ul>\n</div>\n" .
4649                               "</content>\n" .
4650                               "</entry>\n";
4651                 }
4652         }
4653
4654         # end of feed
4655         if ($format eq 'rss') {
4656                 print "</channel>\n</rss>\n";
4657         }       elsif ($format eq 'atom') {
4658                 print "</feed>\n";
4659         }
4660 }
4661
4662 sub git_rss {
4663         git_feed('rss');
4664 }
4665
4666 sub git_atom {
4667         git_feed('atom');
4668 }
4669
4670 sub git_opml {
4671         my @list = git_get_projects_list();
4672
4673         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4674         print <<XML;
4675 <?xml version="1.0" encoding="utf-8"?>
4676 <opml version="1.0">
4677 <head>
4678   <title>$site_name OPML Export</title>
4679 </head>
4680 <body>
4681 <outline text="git RSS feeds">
4682 XML
4683
4684         foreach my $pr (@list) {
4685                 my %proj = %$pr;
4686                 my $head = git_get_head_hash($proj{'path'});
4687                 if (!defined $head) {
4688                         next;
4689                 }
4690                 $git_dir = "$projectroot/$proj{'path'}";
4691                 my %co = parse_commit($head);
4692                 if (!%co) {
4693                         next;
4694                 }
4695
4696                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4697                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4698                 my $html = "$my_url?p=$proj{'path'};a=summary";
4699                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4700         }
4701         print <<XML;
4702 </outline>
4703 </body>
4704 </opml>
4705 XML
4706 }