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         $skip ||= 0;
1393
1394         # Delete once rev-list supports the --skip option
1395         if ($skip > 0) {
1396                 open my $fd, "-|", git_cmd(), "rev-list",
1397                         ($arg ? ($arg) : ()),
1398                         ("--max-count=" . ($maxcount + $skip)),
1399                         $commit_id,
1400                         "--",
1401                         ($filename ? ($filename) : ())
1402                         or die_error(undef, "Open git-rev-list failed");
1403                 while (my $line = <$fd>) {
1404                         if ($skip-- <= 0) {
1405                                 chomp $line;
1406                                 my %co = parse_commit($line);
1407                                 push @cos, \%co;
1408                         }
1409                 }
1410                 close $fd;
1411
1412                 return wantarray ? @cos : \@cos;
1413         }
1414
1415         local $/ = "\0";
1416
1417         open my $fd, "-|", git_cmd(), "rev-list",
1418                 "--header",
1419                 ($arg ? ($arg) : ()),
1420                 ("--max-count=" . $maxcount),
1421                 # Add once rev-list supports the --skip option
1422                 # ("--skip=" . $skip),
1423                 $commit_id,
1424                 "--",
1425                 ($filename ? ($filename) : ())
1426                 or die_error(undef, "Open git-rev-list failed");
1427         while (my $line = <$fd>) {
1428                 my %co = parse_commit_text($line);
1429                 push @cos, \%co;
1430         }
1431         close $fd;
1432
1433         return wantarray ? @cos : \@cos;
1434 }
1435
1436 # parse ref from ref_file, given by ref_id, with given type
1437 sub parse_ref {
1438         my $ref_file = shift;
1439         my $ref_id = shift;
1440         my $type = shift || git_get_type($ref_id);
1441         my %ref_item;
1442
1443         $ref_item{'type'} = $type;
1444         $ref_item{'id'} = $ref_id;
1445         $ref_item{'epoch'} = 0;
1446         $ref_item{'age'} = "unknown";
1447         if ($type eq "tag") {
1448                 my %tag = parse_tag($ref_id);
1449                 $ref_item{'comment'} = $tag{'comment'};
1450                 if ($tag{'type'} eq "commit") {
1451                         my %co = parse_commit($tag{'object'});
1452                         $ref_item{'epoch'} = $co{'committer_epoch'};
1453                         $ref_item{'age'} = $co{'age_string'};
1454                 } elsif (defined($tag{'epoch'})) {
1455                         my $age = time - $tag{'epoch'};
1456                         $ref_item{'epoch'} = $tag{'epoch'};
1457                         $ref_item{'age'} = age_string($age);
1458                 }
1459                 $ref_item{'reftype'} = $tag{'type'};
1460                 $ref_item{'name'} = $tag{'name'};
1461                 $ref_item{'refid'} = $tag{'object'};
1462         } elsif ($type eq "commit"){
1463                 my %co = parse_commit($ref_id);
1464                 $ref_item{'reftype'} = "commit";
1465                 $ref_item{'name'} = $ref_file;
1466                 $ref_item{'title'} = $co{'title'};
1467                 $ref_item{'refid'} = $ref_id;
1468                 $ref_item{'epoch'} = $co{'committer_epoch'};
1469                 $ref_item{'age'} = $co{'age_string'};
1470         } else {
1471                 $ref_item{'reftype'} = $type;
1472                 $ref_item{'name'} = $ref_file;
1473                 $ref_item{'refid'} = $ref_id;
1474         }
1475
1476         return %ref_item;
1477 }
1478
1479 # parse line of git-diff-tree "raw" output
1480 sub parse_difftree_raw_line {
1481         my $line = shift;
1482         my %res;
1483
1484         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1485         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1486         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1487                 $res{'from_mode'} = $1;
1488                 $res{'to_mode'} = $2;
1489                 $res{'from_id'} = $3;
1490                 $res{'to_id'} = $4;
1491                 $res{'status'} = $5;
1492                 $res{'similarity'} = $6;
1493                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1494                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1495                 } else {
1496                         $res{'file'} = unquote($7);
1497                 }
1498         }
1499         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1500         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1501                 $res{'commit'} = $1;
1502         }
1503
1504         return wantarray ? %res : \%res;
1505 }
1506
1507 # parse line of git-ls-tree output
1508 sub parse_ls_tree_line ($;%) {
1509         my $line = shift;
1510         my %opts = @_;
1511         my %res;
1512
1513         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1514         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1515
1516         $res{'mode'} = $1;
1517         $res{'type'} = $2;
1518         $res{'hash'} = $3;
1519         if ($opts{'-z'}) {
1520                 $res{'name'} = $4;
1521         } else {
1522                 $res{'name'} = unquote($4);
1523         }
1524
1525         return wantarray ? %res : \%res;
1526 }
1527
1528 ## ......................................................................
1529 ## parse to array of hashes functions
1530
1531 sub git_get_heads_list {
1532         my $limit = shift;
1533         my @headslist;
1534
1535         open my $fd, '-|', git_cmd(), 'for-each-ref',
1536                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1537                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1538                 'refs/heads'
1539                 or return;
1540         while (my $line = <$fd>) {
1541                 my %ref_item;
1542
1543                 chomp $line;
1544                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1545                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1546                 my ($committer, $epoch, $tz) =
1547                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1548                 $name =~ s!^refs/heads/!!;
1549
1550                 $ref_item{'name'}  = $name;
1551                 $ref_item{'id'}    = $hash;
1552                 $ref_item{'title'} = $title || '(no commit message)';
1553                 $ref_item{'epoch'} = $epoch;
1554                 if ($epoch) {
1555                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1556                 } else {
1557                         $ref_item{'age'} = "unknown";
1558                 }
1559
1560                 push @headslist, \%ref_item;
1561         }
1562         close $fd;
1563
1564         return wantarray ? @headslist : \@headslist;
1565 }
1566
1567 sub git_get_tags_list {
1568         my $limit = shift;
1569         my @tagslist;
1570
1571         open my $fd, '-|', git_cmd(), 'for-each-ref',
1572                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1573                 '--format=%(objectname) %(objecttype) %(refname) '.
1574                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1575                 'refs/tags'
1576                 or return;
1577         while (my $line = <$fd>) {
1578                 my %ref_item;
1579
1580                 chomp $line;
1581                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1582                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1583                 my ($creator, $epoch, $tz) =
1584                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1585                 $name =~ s!^refs/tags/!!;
1586
1587                 $ref_item{'type'} = $type;
1588                 $ref_item{'id'} = $id;
1589                 $ref_item{'name'} = $name;
1590                 if ($type eq "tag") {
1591                         $ref_item{'subject'} = $title;
1592                         $ref_item{'reftype'} = $reftype;
1593                         $ref_item{'refid'}   = $refid;
1594                 } else {
1595                         $ref_item{'reftype'} = $type;
1596                         $ref_item{'refid'}   = $id;
1597                 }
1598
1599                 if ($type eq "tag" || $type eq "commit") {
1600                         $ref_item{'epoch'} = $epoch;
1601                         if ($epoch) {
1602                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1603                         } else {
1604                                 $ref_item{'age'} = "unknown";
1605                         }
1606                 }
1607
1608                 push @tagslist, \%ref_item;
1609         }
1610         close $fd;
1611
1612         return wantarray ? @tagslist : \@tagslist;
1613 }
1614
1615 ## ----------------------------------------------------------------------
1616 ## filesystem-related functions
1617
1618 sub get_file_owner {
1619         my $path = shift;
1620
1621         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1622         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1623         if (!defined $gcos) {
1624                 return undef;
1625         }
1626         my $owner = $gcos;
1627         $owner =~ s/[,;].*$//;
1628         return to_utf8($owner);
1629 }
1630
1631 ## ......................................................................
1632 ## mimetype related functions
1633
1634 sub mimetype_guess_file {
1635         my $filename = shift;
1636         my $mimemap = shift;
1637         -r $mimemap or return undef;
1638
1639         my %mimemap;
1640         open(MIME, $mimemap) or return undef;
1641         while (<MIME>) {
1642                 next if m/^#/; # skip comments
1643                 my ($mime, $exts) = split(/\t+/);
1644                 if (defined $exts) {
1645                         my @exts = split(/\s+/, $exts);
1646                         foreach my $ext (@exts) {
1647                                 $mimemap{$ext} = $mime;
1648                         }
1649                 }
1650         }
1651         close(MIME);
1652
1653         $filename =~ /\.([^.]*)$/;
1654         return $mimemap{$1};
1655 }
1656
1657 sub mimetype_guess {
1658         my $filename = shift;
1659         my $mime;
1660         $filename =~ /\./ or return undef;
1661
1662         if ($mimetypes_file) {
1663                 my $file = $mimetypes_file;
1664                 if ($file !~ m!^/!) { # if it is relative path
1665                         # it is relative to project
1666                         $file = "$projectroot/$project/$file";
1667                 }
1668                 $mime = mimetype_guess_file($filename, $file);
1669         }
1670         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1671         return $mime;
1672 }
1673
1674 sub blob_mimetype {
1675         my $fd = shift;
1676         my $filename = shift;
1677
1678         if ($filename) {
1679                 my $mime = mimetype_guess($filename);
1680                 $mime and return $mime;
1681         }
1682
1683         # just in case
1684         return $default_blob_plain_mimetype unless $fd;
1685
1686         if (-T $fd) {
1687                 return 'text/plain' .
1688                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1689         } elsif (! $filename) {
1690                 return 'application/octet-stream';
1691         } elsif ($filename =~ m/\.png$/i) {
1692                 return 'image/png';
1693         } elsif ($filename =~ m/\.gif$/i) {
1694                 return 'image/gif';
1695         } elsif ($filename =~ m/\.jpe?g$/i) {
1696                 return 'image/jpeg';
1697         } else {
1698                 return 'application/octet-stream';
1699         }
1700 }
1701
1702 ## ======================================================================
1703 ## functions printing HTML: header, footer, error page
1704
1705 sub git_header_html {
1706         my $status = shift || "200 OK";
1707         my $expires = shift;
1708
1709         my $title = "$site_name";
1710         if (defined $project) {
1711                 $title .= " - $project";
1712                 if (defined $action) {
1713                         $title .= "/$action";
1714                         if (defined $file_name) {
1715                                 $title .= " - " . esc_path($file_name);
1716                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1717                                         $title .= "/";
1718                                 }
1719                         }
1720                 }
1721         }
1722         my $content_type;
1723         # require explicit support from the UA if we are to send the page as
1724         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1725         # we have to do this because MSIE sometimes globs '*/*', pretending to
1726         # support xhtml+xml but choking when it gets what it asked for.
1727         if (defined $cgi->http('HTTP_ACCEPT') &&
1728             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1729             $cgi->Accept('application/xhtml+xml') != 0) {
1730                 $content_type = 'application/xhtml+xml';
1731         } else {
1732                 $content_type = 'text/html';
1733         }
1734         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1735                            -status=> $status, -expires => $expires);
1736         print <<EOF;
1737 <?xml version="1.0" encoding="utf-8"?>
1738 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1739 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1740 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1741 <!-- git core binaries version $git_version -->
1742 <head>
1743 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1744 <meta name="generator" content="gitweb/$version git/$git_version"/>
1745 <meta name="robots" content="index, nofollow"/>
1746 <title>$title</title>
1747 EOF
1748 # print out each stylesheet that exist
1749         if (defined $stylesheet) {
1750 #provides backwards capability for those people who define style sheet in a config file
1751                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1752         } else {
1753                 foreach my $stylesheet (@stylesheets) {
1754                         next unless $stylesheet;
1755                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1756                 }
1757         }
1758         if (defined $project) {
1759                 printf('<link rel="alternate" title="%s log RSS feed" '.
1760                        'href="%s" type="application/rss+xml" />'."\n",
1761                        esc_param($project), href(action=>"rss"));
1762                 printf('<link rel="alternate" title="%s log Atom feed" '.
1763                        'href="%s" type="application/atom+xml" />'."\n",
1764                        esc_param($project), href(action=>"atom"));
1765         } else {
1766                 printf('<link rel="alternate" title="%s projects list" '.
1767                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1768                        $site_name, href(project=>undef, action=>"project_index"));
1769                 printf('<link rel="alternate" title="%s projects feeds" '.
1770                        'href="%s" type="text/x-opml"/>'."\n",
1771                        $site_name, href(project=>undef, action=>"opml"));
1772         }
1773         if (defined $favicon) {
1774                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1775         }
1776
1777         print "</head>\n" .
1778               "<body>\n";
1779
1780         if (-f $site_header) {
1781                 open (my $fd, $site_header);
1782                 print <$fd>;
1783                 close $fd;
1784         }
1785
1786         print "<div class=\"page_header\">\n" .
1787               $cgi->a({-href => esc_url($logo_url),
1788                        -title => $logo_label},
1789                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1790         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1791         if (defined $project) {
1792                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1793                 if (defined $action) {
1794                         print " / $action";
1795                 }
1796                 print "\n";
1797         }
1798         my ($have_search) = gitweb_check_feature('search');
1799         if ((defined $project) && ($have_search)) {
1800                 if (!defined $searchtext) {
1801                         $searchtext = "";
1802                 }
1803                 my $search_hash;
1804                 if (defined $hash_base) {
1805                         $search_hash = $hash_base;
1806                 } elsif (defined $hash) {
1807                         $search_hash = $hash;
1808                 } else {
1809                         $search_hash = "HEAD";
1810                 }
1811                 $cgi->param("a", "search");
1812                 $cgi->param("h", $search_hash);
1813                 $cgi->param("p", $project);
1814                 print $cgi->startform(-method => "get", -action => $my_uri) .
1815                       "<div class=\"search\">\n" .
1816                       $cgi->hidden(-name => "p") . "\n" .
1817                       $cgi->hidden(-name => "a") . "\n" .
1818                       $cgi->hidden(-name => "h") . "\n" .
1819                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1820                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1821                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1822                       " search:\n",
1823                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1824                       "</div>" .
1825                       $cgi->end_form() . "\n";
1826         }
1827         print "</div>\n";
1828 }
1829
1830 sub git_footer_html {
1831         print "<div class=\"page_footer\">\n";
1832         if (defined $project) {
1833                 my $descr = git_get_project_description($project);
1834                 if (defined $descr) {
1835                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1836                 }
1837                 print $cgi->a({-href => href(action=>"rss"),
1838                               -class => "rss_logo"}, "RSS") . " ";
1839                 print $cgi->a({-href => href(action=>"atom"),
1840                               -class => "rss_logo"}, "Atom") . "\n";
1841         } else {
1842                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1843                               -class => "rss_logo"}, "OPML") . " ";
1844                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1845                               -class => "rss_logo"}, "TXT") . "\n";
1846         }
1847         print "</div>\n" ;
1848
1849         if (-f $site_footer) {
1850                 open (my $fd, $site_footer);
1851                 print <$fd>;
1852                 close $fd;
1853         }
1854
1855         print "</body>\n" .
1856               "</html>";
1857 }
1858
1859 sub die_error {
1860         my $status = shift || "403 Forbidden";
1861         my $error = shift || "Malformed query, file missing or permission denied";
1862
1863         git_header_html($status);
1864         print <<EOF;
1865 <div class="page_body">
1866 <br /><br />
1867 $status - $error
1868 <br />
1869 </div>
1870 EOF
1871         git_footer_html();
1872         exit;
1873 }
1874
1875 ## ----------------------------------------------------------------------
1876 ## functions printing or outputting HTML: navigation
1877
1878 sub git_print_page_nav {
1879         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1880         $extra = '' if !defined $extra; # pager or formats
1881
1882         my @navs = qw(summary shortlog log commit commitdiff tree);
1883         if ($suppress) {
1884                 @navs = grep { $_ ne $suppress } @navs;
1885         }
1886
1887         my %arg = map { $_ => {action=>$_} } @navs;
1888         if (defined $head) {
1889                 for (qw(commit commitdiff)) {
1890                         $arg{$_}{hash} = $head;
1891                 }
1892                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1893                         for (qw(shortlog log)) {
1894                                 $arg{$_}{hash} = $head;
1895                         }
1896                 }
1897         }
1898         $arg{tree}{hash} = $treehead if defined $treehead;
1899         $arg{tree}{hash_base} = $treebase if defined $treebase;
1900
1901         print "<div class=\"page_nav\">\n" .
1902                 (join " | ",
1903                  map { $_ eq $current ?
1904                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1905                  } @navs);
1906         print "<br/>\n$extra<br/>\n" .
1907               "</div>\n";
1908 }
1909
1910 sub format_paging_nav {
1911         my ($action, $hash, $head, $page, $nrevs) = @_;
1912         my $paging_nav;
1913
1914
1915         if ($hash ne $head || $page) {
1916                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1917         } else {
1918                 $paging_nav .= "HEAD";
1919         }
1920
1921         if ($page > 0) {
1922                 $paging_nav .= " &sdot; " .
1923                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1924                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1925         } else {
1926                 $paging_nav .= " &sdot; prev";
1927         }
1928
1929         if ($nrevs >= (100 * ($page+1)-1)) {
1930                 $paging_nav .= " &sdot; " .
1931                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1932                                  -accesskey => "n", -title => "Alt-n"}, "next");
1933         } else {
1934                 $paging_nav .= " &sdot; next";
1935         }
1936
1937         return $paging_nav;
1938 }
1939
1940 ## ......................................................................
1941 ## functions printing or outputting HTML: div
1942
1943 sub git_print_header_div {
1944         my ($action, $title, $hash, $hash_base) = @_;
1945         my %args = ();
1946
1947         $args{action} = $action;
1948         $args{hash} = $hash if $hash;
1949         $args{hash_base} = $hash_base if $hash_base;
1950
1951         print "<div class=\"header\">\n" .
1952               $cgi->a({-href => href(%args), -class => "title"},
1953               $title ? $title : $action) .
1954               "\n</div>\n";
1955 }
1956
1957 #sub git_print_authorship (\%) {
1958 sub git_print_authorship {
1959         my $co = shift;
1960
1961         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1962         print "<div class=\"author_date\">" .
1963               esc_html($co->{'author_name'}) .
1964               " [$ad{'rfc2822'}";
1965         if ($ad{'hour_local'} < 6) {
1966                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1967                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1968         } else {
1969                 printf(" (%02d:%02d %s)",
1970                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1971         }
1972         print "]</div>\n";
1973 }
1974
1975 sub git_print_page_path {
1976         my $name = shift;
1977         my $type = shift;
1978         my $hb = shift;
1979
1980
1981         print "<div class=\"page_path\">";
1982         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1983                       -title => 'tree root'}, "[$project]");
1984         print " / ";
1985         if (defined $name) {
1986                 my @dirname = split '/', $name;
1987                 my $basename = pop @dirname;
1988                 my $fullname = '';
1989
1990                 foreach my $dir (@dirname) {
1991                         $fullname .= ($fullname ? '/' : '') . $dir;
1992                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1993                                                      hash_base=>$hb),
1994                                       -title => esc_html($fullname)}, esc_path($dir));
1995                         print " / ";
1996                 }
1997                 if (defined $type && $type eq 'blob') {
1998                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1999                                                      hash_base=>$hb),
2000                                       -title => esc_html($name)}, esc_path($basename));
2001                 } elsif (defined $type && $type eq 'tree') {
2002                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2003                                                      hash_base=>$hb),
2004                                       -title => esc_html($name)}, esc_path($basename));
2005                         print " / ";
2006                 } else {
2007                         print esc_path($basename);
2008                 }
2009         }
2010         print "<br/></div>\n";
2011 }
2012
2013 # sub git_print_log (\@;%) {
2014 sub git_print_log ($;%) {
2015         my $log = shift;
2016         my %opts = @_;
2017
2018         if ($opts{'-remove_title'}) {
2019                 # remove title, i.e. first line of log
2020                 shift @$log;
2021         }
2022         # remove leading empty lines
2023         while (defined $log->[0] && $log->[0] eq "") {
2024                 shift @$log;
2025         }
2026
2027         # print log
2028         my $signoff = 0;
2029         my $empty = 0;
2030         foreach my $line (@$log) {
2031                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2032                         $signoff = 1;
2033                         $empty = 0;
2034                         if (! $opts{'-remove_signoff'}) {
2035                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2036                                 next;
2037                         } else {
2038                                 # remove signoff lines
2039                                 next;
2040                         }
2041                 } else {
2042                         $signoff = 0;
2043                 }
2044
2045                 # print only one empty line
2046                 # do not print empty line after signoff
2047                 if ($line eq "") {
2048                         next if ($empty || $signoff);
2049                         $empty = 1;
2050                 } else {
2051                         $empty = 0;
2052                 }
2053
2054                 print format_log_line_html($line) . "<br/>\n";
2055         }
2056
2057         if ($opts{'-final_empty_line'}) {
2058                 # end with single empty line
2059                 print "<br/>\n" unless $empty;
2060         }
2061 }
2062
2063 # return link target (what link points to)
2064 sub git_get_link_target {
2065         my $hash = shift;
2066         my $link_target;
2067
2068         # read link
2069         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2070                 or return;
2071         {
2072                 local $/;
2073                 $link_target = <$fd>;
2074         }
2075         close $fd
2076                 or return;
2077
2078         return $link_target;
2079 }
2080
2081 # given link target, and the directory (basedir) the link is in,
2082 # return target of link relative to top directory (top tree);
2083 # return undef if it is not possible (including absolute links).
2084 sub normalize_link_target {
2085         my ($link_target, $basedir, $hash_base) = @_;
2086
2087         # we can normalize symlink target only if $hash_base is provided
2088         return unless $hash_base;
2089
2090         # absolute symlinks (beginning with '/') cannot be normalized
2091         return if (substr($link_target, 0, 1) eq '/');
2092
2093         # normalize link target to path from top (root) tree (dir)
2094         my $path;
2095         if ($basedir) {
2096                 $path = $basedir . '/' . $link_target;
2097         } else {
2098                 # we are in top (root) tree (dir)
2099                 $path = $link_target;
2100         }
2101
2102         # remove //, /./, and /../
2103         my @path_parts;
2104         foreach my $part (split('/', $path)) {
2105                 # discard '.' and ''
2106                 next if (!$part || $part eq '.');
2107                 # handle '..'
2108                 if ($part eq '..') {
2109                         if (@path_parts) {
2110                                 pop @path_parts;
2111                         } else {
2112                                 # link leads outside repository (outside top dir)
2113                                 return;
2114                         }
2115                 } else {
2116                         push @path_parts, $part;
2117                 }
2118         }
2119         $path = join('/', @path_parts);
2120
2121         return $path;
2122 }
2123
2124 # print tree entry (row of git_tree), but without encompassing <tr> element
2125 sub git_print_tree_entry {
2126         my ($t, $basedir, $hash_base, $have_blame) = @_;
2127
2128         my %base_key = ();
2129         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2130
2131         # The format of a table row is: mode list link.  Where mode is
2132         # the mode of the entry, list is the name of the entry, an href,
2133         # and link is the action links of the entry.
2134
2135         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2136         if ($t->{'type'} eq "blob") {
2137                 print "<td class=\"list\">" .
2138                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2139                                                file_name=>"$basedir$t->{'name'}", %base_key),
2140                                 -class => "list"}, esc_path($t->{'name'}));
2141                 if (S_ISLNK(oct $t->{'mode'})) {
2142                         my $link_target = git_get_link_target($t->{'hash'});
2143                         if ($link_target) {
2144                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2145                                 if (defined $norm_target) {
2146                                         print " -> " .
2147                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2148                                                                      file_name=>$norm_target),
2149                                                        -title => $norm_target}, esc_path($link_target));
2150                                 } else {
2151                                         print " -> " . esc_path($link_target);
2152                                 }
2153                         }
2154                 }
2155                 print "</td>\n";
2156                 print "<td class=\"link\">";
2157                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2158                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2159                               "blob");
2160                 if ($have_blame) {
2161                         print " | " .
2162                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2163                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2164                                       "blame");
2165                 }
2166                 if (defined $hash_base) {
2167                         print " | " .
2168                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2169                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2170                                       "history");
2171                 }
2172                 print " | " .
2173                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2174                                                file_name=>"$basedir$t->{'name'}")},
2175                                 "raw");
2176                 print "</td>\n";
2177
2178         } elsif ($t->{'type'} eq "tree") {
2179                 print "<td class=\"list\">";
2180                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2181                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2182                               esc_path($t->{'name'}));
2183                 print "</td>\n";
2184                 print "<td class=\"link\">";
2185                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2186                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2187                               "tree");
2188                 if (defined $hash_base) {
2189                         print " | " .
2190                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2191                                                      file_name=>"$basedir$t->{'name'}")},
2192                                       "history");
2193                 }
2194                 print "</td>\n";
2195         }
2196 }
2197
2198 ## ......................................................................
2199 ## functions printing large fragments of HTML
2200
2201 sub git_difftree_body {
2202         my ($difftree, $hash, $parent) = @_;
2203         my ($have_blame) = gitweb_check_feature('blame');
2204         print "<div class=\"list_head\">\n";
2205         if ($#{$difftree} > 10) {
2206                 print(($#{$difftree} + 1) . " files changed:\n");
2207         }
2208         print "</div>\n";
2209
2210         print "<table class=\"diff_tree\">\n";
2211         my $alternate = 1;
2212         my $patchno = 0;
2213         foreach my $line (@{$difftree}) {
2214                 my %diff = parse_difftree_raw_line($line);
2215
2216                 if ($alternate) {
2217                         print "<tr class=\"dark\">\n";
2218                 } else {
2219                         print "<tr class=\"light\">\n";
2220                 }
2221                 $alternate ^= 1;
2222
2223                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2224                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2225                 if ($diff{'to_mode'} ne ('0' x 6)) {
2226                         $to_mode_oct = oct $diff{'to_mode'};
2227                         if (S_ISREG($to_mode_oct)) { # only for regular file
2228                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2229                         }
2230                         $to_file_type = file_type($diff{'to_mode'});
2231                 }
2232                 if ($diff{'from_mode'} ne ('0' x 6)) {
2233                         $from_mode_oct = oct $diff{'from_mode'};
2234                         if (S_ISREG($to_mode_oct)) { # only for regular file
2235                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2236                         }
2237                         $from_file_type = file_type($diff{'from_mode'});
2238                 }
2239
2240                 if ($diff{'status'} eq "A") { # created
2241                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2242                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2243                         $mode_chng   .= "]</span>";
2244                         print "<td>";
2245                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2246                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2247                                       -class => "list"}, esc_path($diff{'file'}));
2248                         print "</td>\n";
2249                         print "<td>$mode_chng</td>\n";
2250                         print "<td class=\"link\">";
2251                         if ($action eq 'commitdiff') {
2252                                 # link to patch
2253                                 $patchno++;
2254                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2255                                 print " | ";
2256                         }
2257                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2258                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2259                                       "blob") . " | ";
2260                         print "</td>\n";
2261
2262                 } elsif ($diff{'status'} eq "D") { # deleted
2263                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2264                         print "<td>";
2265                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2266                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2267                                        -class => "list"}, esc_path($diff{'file'}));
2268                         print "</td>\n";
2269                         print "<td>$mode_chng</td>\n";
2270                         print "<td class=\"link\">";
2271                         if ($action eq 'commitdiff') {
2272                                 # link to patch
2273                                 $patchno++;
2274                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2275                                 print " | ";
2276                         }
2277                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2278                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2279                                       "blob") . " | ";
2280                         if ($have_blame) {
2281                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2282                                                              file_name=>$diff{'file'})},
2283                                               "blame") . " | ";
2284                         }
2285                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2286                                                      file_name=>$diff{'file'})},
2287                                       "history");
2288                         print "</td>\n";
2289
2290                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2291                         my $mode_chnge = "";
2292                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2293                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2294                                 if ($from_file_type != $to_file_type) {
2295                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2296                                 }
2297                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2298                                         if ($from_mode_str && $to_mode_str) {
2299                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2300                                         } elsif ($to_mode_str) {
2301                                                 $mode_chnge .= " mode: $to_mode_str";
2302                                         }
2303                                 }
2304                                 $mode_chnge .= "]</span>\n";
2305                         }
2306                         print "<td>";
2307                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2308                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2309                                       -class => "list"}, esc_path($diff{'file'}));
2310                         print "</td>\n";
2311                         print "<td>$mode_chnge</td>\n";
2312                         print "<td class=\"link\">";
2313                         if ($action eq 'commitdiff') {
2314                                 # link to patch
2315                                 $patchno++;
2316                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2317                                       " | ";
2318                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2319                                 # "commit" view and modified file (not onlu mode changed)
2320                                 print $cgi->a({-href => href(action=>"blobdiff",
2321                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2322                                                              hash_base=>$hash, hash_parent_base=>$parent,
2323                                                              file_name=>$diff{'file'})},
2324                                               "diff") .
2325                                       " | ";
2326                         }
2327                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2328                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2329                                        "blob") . " | ";
2330                         if ($have_blame) {
2331                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2332                                                              file_name=>$diff{'file'})},
2333                                               "blame") . " | ";
2334                         }
2335                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2336                                                      file_name=>$diff{'file'})},
2337                                       "history");
2338                         print "</td>\n";
2339
2340                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2341                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2342                         my $nstatus = $status_name{$diff{'status'}};
2343                         my $mode_chng = "";
2344                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2345                                 # mode also for directories, so we cannot use $to_mode_str
2346                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2347                         }
2348                         print "<td>" .
2349                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2350                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2351                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2352                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2353                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2354                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2355                                       -class => "list"}, esc_path($diff{'from_file'})) .
2356                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2357                               "<td class=\"link\">";
2358                         if ($action eq 'commitdiff') {
2359                                 # link to patch
2360                                 $patchno++;
2361                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2362                                       " | ";
2363                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2364                                 # "commit" view and modified file (not only pure rename or copy)
2365                                 print $cgi->a({-href => href(action=>"blobdiff",
2366                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2367                                                              hash_base=>$hash, hash_parent_base=>$parent,
2368                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2369                                               "diff") .
2370                                       " | ";
2371                         }
2372                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2373                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2374                                       "blob") . " | ";
2375                         if ($have_blame) {
2376                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2377                                                              file_name=>$diff{'to_file'})},
2378                                               "blame") . " | ";
2379                         }
2380                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2381                                                     file_name=>$diff{'to_file'})},
2382                                       "history");
2383                         print "</td>\n";
2384
2385                 } # we should not encounter Unmerged (U) or Unknown (X) status
2386                 print "</tr>\n";
2387         }
2388         print "</table>\n";
2389 }
2390
2391 sub git_patchset_body {
2392         my ($fd, $difftree, $hash, $hash_parent) = @_;
2393
2394         my $patch_idx = 0;
2395         my $patch_line;
2396         my $diffinfo;
2397         my (%from, %to);
2398         my ($from_id, $to_id);
2399
2400         print "<div class=\"patchset\">\n";
2401
2402         # skip to first patch
2403         while ($patch_line = <$fd>) {
2404                 chomp $patch_line;
2405
2406                 last if ($patch_line =~ m/^diff /);
2407         }
2408
2409  PATCH:
2410         while ($patch_line) {
2411                 my @diff_header;
2412
2413                 # git diff header
2414                 #assert($patch_line =~ m/^diff /) if DEBUG;
2415                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2416                 push @diff_header, $patch_line;
2417
2418                 # extended diff header
2419         EXTENDED_HEADER:
2420                 while ($patch_line = <$fd>) {
2421                         chomp $patch_line;
2422
2423                         last EXTENDED_HEADER if ($patch_line =~ m/^--- /);
2424
2425                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2426                                 $from_id = $1;
2427                                 $to_id   = $2;
2428                         }
2429
2430                         push @diff_header, $patch_line;
2431                 }
2432                 #last PATCH unless $patch_line;
2433                 my $last_patch_line = $patch_line;
2434
2435                 # check if current patch belong to current raw line
2436                 # and parse raw git-diff line if needed
2437                 if (defined $diffinfo &&
2438                     $diffinfo->{'from_id'} eq $from_id &&
2439                     $diffinfo->{'to_id'}   eq $to_id) {
2440                         # this is split patch
2441                         print "<div class=\"patch cont\">\n";
2442                 } else {
2443                         # advance raw git-diff output if needed
2444                         $patch_idx++ if defined $diffinfo;
2445
2446                         # read and prepare patch information
2447                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2448                                 # pre-parsed (or generated by hand)
2449                                 $diffinfo = $difftree->[$patch_idx];
2450                         } else {
2451                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2452                         }
2453                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2454                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2455                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2456                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2457                                                      hash=>$diffinfo->{'from_id'},
2458                                                      file_name=>$from{'file'});
2459                         }
2460                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2461                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2462                                                    hash=>$diffinfo->{'to_id'},
2463                                                    file_name=>$to{'file'});
2464                         }
2465                         # this is first patch for raw difftree line with $patch_idx index
2466                         # we index @$difftree array from 0, but number patches from 1
2467                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2468                 }
2469
2470                 # print "git diff" header
2471                 $patch_line = shift @diff_header;
2472                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2473                 if ($from{'href'}) {
2474                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2475                                                'a/' . esc_path($from{'file'}));
2476                 } else { # file was added
2477                         $patch_line .= 'a/' . esc_path($from{'file'});
2478                 }
2479                 $patch_line .= ' ';
2480                 if ($to{'href'}) {
2481                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2482                                                'b/' . esc_path($to{'file'}));
2483                 } else { # file was deleted
2484                         $patch_line .= 'b/' . esc_path($to{'file'});
2485                 }
2486                 print "<div class=\"diff header\">$patch_line</div>\n";
2487
2488                 # print extended diff header
2489                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2490         EXTENDED_HEADER:
2491                 foreach $patch_line (@diff_header) {
2492                         # match <path>
2493                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2494                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2495                                                         esc_path($from{'file'}));
2496                         }
2497                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2498                                 $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2499                                                       esc_path($to{'file'}));
2500                         }
2501                         # match <mode>
2502                         if ($patch_line =~ m/\s(\d{6})$/) {
2503                                 $patch_line .= '<span class="info"> (' .
2504                                                file_type_long($1) .
2505                                                ')</span>';
2506                         }
2507                         # match <hash>
2508                         if ($patch_line =~ m/^index/) {
2509                                 my ($from_link, $to_link);
2510                                 if ($from{'href'}) {
2511                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2512                                                              substr($diffinfo->{'from_id'},0,7));
2513                                 } else {
2514                                         $from_link = '0' x 7;
2515                                 }
2516                                 if ($to{'href'}) {
2517                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2518                                                            substr($diffinfo->{'to_id'},0,7));
2519                                 } else {
2520                                         $to_link = '0' x 7;
2521                                 }
2522                                 #affirm {
2523                                 #       my ($from_hash, $to_hash) =
2524                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2525                                 #       my ($from_id, $to_id) =
2526                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2527                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2528                                 #} if DEBUG;
2529                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2530                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2531                         }
2532                         print $patch_line . "<br/>\n";
2533                 }
2534                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2535
2536                 # from-file/to-file diff header
2537                 $patch_line = $last_patch_line;
2538                 #assert($patch_line =~ m/^---/) if DEBUG;
2539                 if ($from{'href'}) {
2540                         $patch_line = '--- a/' .
2541                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2542                                               esc_path($from{'file'}));
2543                 }
2544                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2545
2546                 $patch_line = <$fd>;
2547                 #last PATCH unless $patch_line;
2548                 chomp $patch_line;
2549
2550                 #assert($patch_line =~ m/^+++/) if DEBUG;
2551                 if ($to{'href'}) {
2552                         $patch_line = '+++ b/' .
2553                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2554                                               esc_path($to{'file'}));
2555                 }
2556                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2557
2558                 # the patch itself
2559         LINE:
2560                 while ($patch_line = <$fd>) {
2561                         chomp $patch_line;
2562
2563                         next PATCH if ($patch_line =~ m/^diff /);
2564
2565                         print format_diff_line($patch_line, \%from, \%to);
2566                 }
2567
2568         } continue {
2569                 print "</div>\n"; # class="patch"
2570         }
2571
2572         print "</div>\n"; # class="patchset"
2573 }
2574
2575 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2576
2577 sub git_project_list_body {
2578         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2579
2580         my ($check_forks) = gitweb_check_feature('forks');
2581
2582         my @projects;
2583         foreach my $pr (@$projlist) {
2584                 my (@aa) = git_get_last_activity($pr->{'path'});
2585                 unless (@aa) {
2586                         next;
2587                 }
2588                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2589                 if (!defined $pr->{'descr'}) {
2590                         my $descr = git_get_project_description($pr->{'path'}) || "";
2591                         $pr->{'descr_long'} = to_utf8($descr);
2592                         $pr->{'descr'} = chop_str($descr, 25, 5);
2593                 }
2594                 if (!defined $pr->{'owner'}) {
2595                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2596                 }
2597                 if ($check_forks) {
2598                         my $pname = $pr->{'path'};
2599                         if (($pname =~ s/\.git$//) &&
2600                             ($pname !~ /\/$/) &&
2601                             (-d "$projectroot/$pname")) {
2602                                 $pr->{'forks'} = "-d $projectroot/$pname";
2603                         }
2604                         else {
2605                                 $pr->{'forks'} = 0;
2606                         }
2607                 }
2608                 push @projects, $pr;
2609         }
2610
2611         $order ||= "project";
2612         $from = 0 unless defined $from;
2613         $to = $#projects if (!defined $to || $#projects < $to);
2614
2615         print "<table class=\"project_list\">\n";
2616         unless ($no_header) {
2617                 print "<tr>\n";
2618                 if ($check_forks) {
2619                         print "<th></th>\n";
2620                 }
2621                 if ($order eq "project") {
2622                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2623                         print "<th>Project</th>\n";
2624                 } else {
2625                         print "<th>" .
2626                               $cgi->a({-href => href(project=>undef, order=>'project'),
2627                                        -class => "header"}, "Project") .
2628                               "</th>\n";
2629                 }
2630                 if ($order eq "descr") {
2631                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2632                         print "<th>Description</th>\n";
2633                 } else {
2634                         print "<th>" .
2635                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2636                                        -class => "header"}, "Description") .
2637                               "</th>\n";
2638                 }
2639                 if ($order eq "owner") {
2640                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2641                         print "<th>Owner</th>\n";
2642                 } else {
2643                         print "<th>" .
2644                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2645                                        -class => "header"}, "Owner") .
2646                               "</th>\n";
2647                 }
2648                 if ($order eq "age") {
2649                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2650                         print "<th>Last Change</th>\n";
2651                 } else {
2652                         print "<th>" .
2653                               $cgi->a({-href => href(project=>undef, order=>'age'),
2654                                        -class => "header"}, "Last Change") .
2655                               "</th>\n";
2656                 }
2657                 print "<th></th>\n" .
2658                       "</tr>\n";
2659         }
2660         my $alternate = 1;
2661         for (my $i = $from; $i <= $to; $i++) {
2662                 my $pr = $projects[$i];
2663                 if ($alternate) {
2664                         print "<tr class=\"dark\">\n";
2665                 } else {
2666                         print "<tr class=\"light\">\n";
2667                 }
2668                 $alternate ^= 1;
2669                 if ($check_forks) {
2670                         print "<td>";
2671                         if ($pr->{'forks'}) {
2672                                 print "<!-- $pr->{'forks'} -->\n";
2673                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2674                         }
2675                         print "</td>\n";
2676                 }
2677                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2678                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2679                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2680                                         -class => "list", -title => $pr->{'descr_long'}},
2681                                         esc_html($pr->{'descr'})) . "</td>\n" .
2682                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2683                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2684                       $pr->{'age_string'} . "</td>\n" .
2685                       "<td class=\"link\">" .
2686                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2687                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2688                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2689                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2690                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2691                       "</td>\n" .
2692                       "</tr>\n";
2693         }
2694         if (defined $extra) {
2695                 print "<tr>\n";
2696                 if ($check_forks) {
2697                         print "<td></td>\n";
2698                 }
2699                 print "<td colspan=\"5\">$extra</td>\n" .
2700                       "</tr>\n";
2701         }
2702         print "</table>\n";
2703 }
2704
2705 sub git_shortlog_body {
2706         # uses global variable $project
2707         my ($commitlist, $from, $to, $refs, $extra) = @_;
2708
2709         my $have_snapshot = gitweb_have_snapshot();
2710
2711         $from = 0 unless defined $from;
2712         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2713
2714         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2715         my $alternate = 1;
2716         for (my $i = $from; $i <= $to; $i++) {
2717                 my %co = %{$commitlist->[$i]};
2718                 my $commit = $co{'id'};
2719                 my $ref = format_ref_marker($refs, $commit);
2720                 if ($alternate) {
2721                         print "<tr class=\"dark\">\n";
2722                 } else {
2723                         print "<tr class=\"light\">\n";
2724                 }
2725                 $alternate ^= 1;
2726                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2727                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2728                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2729                       "<td>";
2730                 print format_subject_html($co{'title'}, $co{'title_short'},
2731                                           href(action=>"commit", hash=>$commit), $ref);
2732                 print "</td>\n" .
2733                       "<td class=\"link\">" .
2734                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2735                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2736                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2737                 if ($have_snapshot) {
2738                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2739                 }
2740                 print "</td>\n" .
2741                       "</tr>\n";
2742         }
2743         if (defined $extra) {
2744                 print "<tr>\n" .
2745                       "<td colspan=\"4\">$extra</td>\n" .
2746                       "</tr>\n";
2747         }
2748         print "</table>\n";
2749 }
2750
2751 sub git_history_body {
2752         # Warning: assumes constant type (blob or tree) during history
2753         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2754
2755         $from = 0 unless defined $from;
2756         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2757
2758         print "<table class=\"history\" cellspacing=\"0\">\n";
2759         my $alternate = 1;
2760         for (my $i = $from; $i <= $to; $i++) {
2761                 my %co = %{$commitlist->[$i]};
2762                 if (!%co) {
2763                         next;
2764                 }
2765                 my $commit = $co{'id'};
2766
2767                 my $ref = format_ref_marker($refs, $commit);
2768
2769                 if ($alternate) {
2770                         print "<tr class=\"dark\">\n";
2771                 } else {
2772                         print "<tr class=\"light\">\n";
2773                 }
2774                 $alternate ^= 1;
2775                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2776                       # shortlog uses      chop_str($co{'author_name'}, 10)
2777                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2778                       "<td>";
2779                 # originally git_history used chop_str($co{'title'}, 50)
2780                 print format_subject_html($co{'title'}, $co{'title_short'},
2781                                           href(action=>"commit", hash=>$commit), $ref);
2782                 print "</td>\n" .
2783                       "<td class=\"link\">" .
2784                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2785                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2786
2787                 if ($ftype eq 'blob') {
2788                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2789                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2790                         if (defined $blob_current && defined $blob_parent &&
2791                                         $blob_current ne $blob_parent) {
2792                                 print " | " .
2793                                         $cgi->a({-href => href(action=>"blobdiff",
2794                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2795                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2796                                                                file_name=>$file_name)},
2797                                                 "diff to current");
2798                         }
2799                 }
2800                 print "</td>\n" .
2801                       "</tr>\n";
2802         }
2803         if (defined $extra) {
2804                 print "<tr>\n" .
2805                       "<td colspan=\"4\">$extra</td>\n" .
2806                       "</tr>\n";
2807         }
2808         print "</table>\n";
2809 }
2810
2811 sub git_tags_body {
2812         # uses global variable $project
2813         my ($taglist, $from, $to, $extra) = @_;
2814         $from = 0 unless defined $from;
2815         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2816
2817         print "<table class=\"tags\" cellspacing=\"0\">\n";
2818         my $alternate = 1;
2819         for (my $i = $from; $i <= $to; $i++) {
2820                 my $entry = $taglist->[$i];
2821                 my %tag = %$entry;
2822                 my $comment = $tag{'subject'};
2823                 my $comment_short;
2824                 if (defined $comment) {
2825                         $comment_short = chop_str($comment, 30, 5);
2826                 }
2827                 if ($alternate) {
2828                         print "<tr class=\"dark\">\n";
2829                 } else {
2830                         print "<tr class=\"light\">\n";
2831                 }
2832                 $alternate ^= 1;
2833                 print "<td><i>$tag{'age'}</i></td>\n" .
2834                       "<td>" .
2835                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2836                                -class => "list name"}, esc_html($tag{'name'})) .
2837                       "</td>\n" .
2838                       "<td>";
2839                 if (defined $comment) {
2840                         print format_subject_html($comment, $comment_short,
2841                                                   href(action=>"tag", hash=>$tag{'id'}));
2842                 }
2843                 print "</td>\n" .
2844                       "<td class=\"selflink\">";
2845                 if ($tag{'type'} eq "tag") {
2846                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2847                 } else {
2848                         print "&nbsp;";
2849                 }
2850                 print "</td>\n" .
2851                       "<td class=\"link\">" . " | " .
2852                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2853                 if ($tag{'reftype'} eq "commit") {
2854                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2855                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2856                 } elsif ($tag{'reftype'} eq "blob") {
2857                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2858                 }
2859                 print "</td>\n" .
2860                       "</tr>";
2861         }
2862         if (defined $extra) {
2863                 print "<tr>\n" .
2864                       "<td colspan=\"5\">$extra</td>\n" .
2865                       "</tr>\n";
2866         }
2867         print "</table>\n";
2868 }
2869
2870 sub git_heads_body {
2871         # uses global variable $project
2872         my ($headlist, $head, $from, $to, $extra) = @_;
2873         $from = 0 unless defined $from;
2874         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2875
2876         print "<table class=\"heads\" cellspacing=\"0\">\n";
2877         my $alternate = 1;
2878         for (my $i = $from; $i <= $to; $i++) {
2879                 my $entry = $headlist->[$i];
2880                 my %ref = %$entry;
2881                 my $curr = $ref{'id'} eq $head;
2882                 if ($alternate) {
2883                         print "<tr class=\"dark\">\n";
2884                 } else {
2885                         print "<tr class=\"light\">\n";
2886                 }
2887                 $alternate ^= 1;
2888                 print "<td><i>$ref{'age'}</i></td>\n" .
2889                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2890                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2891                                -class => "list name"},esc_html($ref{'name'})) .
2892                       "</td>\n" .
2893                       "<td class=\"link\">" .
2894                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2895                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2896                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2897                       "</td>\n" .
2898                       "</tr>";
2899         }
2900         if (defined $extra) {
2901                 print "<tr>\n" .
2902                       "<td colspan=\"3\">$extra</td>\n" .
2903                       "</tr>\n";
2904         }
2905         print "</table>\n";
2906 }
2907
2908 sub git_search_grep_body {
2909         my ($commitlist, $from, $to, $extra) = @_;
2910         $from = 0 unless defined $from;
2911         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2912
2913         print "<table class=\"grep\" cellspacing=\"0\">\n";
2914         my $alternate = 1;
2915         for (my $i = $from; $i <= $to; $i++) {
2916                 my %co = %{$commitlist->[$i]};
2917                 if (!%co) {
2918                         next;
2919                 }
2920                 my $commit = $co{'id'};
2921                 if ($alternate) {
2922                         print "<tr class=\"dark\">\n";
2923                 } else {
2924                         print "<tr class=\"light\">\n";
2925                 }
2926                 $alternate ^= 1;
2927                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2928                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2929                       "<td>" .
2930                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2931                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2932                 my $comment = $co{'comment'};
2933                 foreach my $line (@$comment) {
2934                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2935                                 my $lead = esc_html($1) || "";
2936                                 $lead = chop_str($lead, 30, 10);
2937                                 my $match = esc_html($2) || "";
2938                                 my $trail = esc_html($3) || "";
2939                                 $trail = chop_str($trail, 30, 10);
2940                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2941                                 print chop_str($text, 80, 5) . "<br/>\n";
2942                         }
2943                 }
2944                 print "</td>\n" .
2945                       "<td class=\"link\">" .
2946                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2947                       " | " .
2948                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2949                 print "</td>\n" .
2950                       "</tr>\n";
2951         }
2952         if (defined $extra) {
2953                 print "<tr>\n" .
2954                       "<td colspan=\"3\">$extra</td>\n" .
2955                       "</tr>\n";
2956         }
2957         print "</table>\n";
2958 }
2959
2960 ## ======================================================================
2961 ## ======================================================================
2962 ## actions
2963
2964 sub git_project_list {
2965         my $order = $cgi->param('o');
2966         if (defined $order && $order !~ m/project|descr|owner|age/) {
2967                 die_error(undef, "Unknown order parameter");
2968         }
2969
2970         my @list = git_get_projects_list();
2971         if (!@list) {
2972                 die_error(undef, "No projects found");
2973         }
2974
2975         git_header_html();
2976         if (-f $home_text) {
2977                 print "<div class=\"index_include\">\n";
2978                 open (my $fd, $home_text);
2979                 print <$fd>;
2980                 close $fd;
2981                 print "</div>\n";
2982         }
2983         git_project_list_body(\@list, $order);
2984         git_footer_html();
2985 }
2986
2987 sub git_forks {
2988         my $order = $cgi->param('o');
2989         if (defined $order && $order !~ m/project|descr|owner|age/) {
2990                 die_error(undef, "Unknown order parameter");
2991         }
2992
2993         my @list = git_get_projects_list($project);
2994         if (!@list) {
2995                 die_error(undef, "No forks found");
2996         }
2997
2998         git_header_html();
2999         git_print_page_nav('','');
3000         git_print_header_div('summary', "$project forks");
3001         git_project_list_body(\@list, $order);
3002         git_footer_html();
3003 }
3004
3005 sub git_project_index {
3006         my @projects = git_get_projects_list($project);
3007
3008         print $cgi->header(
3009                 -type => 'text/plain',
3010                 -charset => 'utf-8',
3011                 -content_disposition => 'inline; filename="index.aux"');
3012
3013         foreach my $pr (@projects) {
3014                 if (!exists $pr->{'owner'}) {
3015                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
3016                 }
3017
3018                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3019                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3020                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3021                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3022                 $path  =~ s/ /\+/g;
3023                 $owner =~ s/ /\+/g;
3024
3025                 print "$path $owner\n";
3026         }
3027 }
3028
3029 sub git_summary {
3030         my $descr = git_get_project_description($project) || "none";
3031         my %co = parse_commit("HEAD");
3032         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3033         my $head = $co{'id'};
3034
3035         my $owner = git_get_project_owner($project);
3036
3037         my $refs = git_get_references();
3038         # These get_*_list functions return one more to allow us to see if
3039         # there are more ...
3040         my @taglist  = git_get_tags_list(16);
3041         my @headlist = git_get_heads_list(16);
3042         my @forklist;
3043         my ($check_forks) = gitweb_check_feature('forks');
3044
3045         if ($check_forks) {
3046                 @forklist = git_get_projects_list($project);
3047         }
3048
3049         git_header_html();
3050         git_print_page_nav('summary','', $head);
3051
3052         print "<div class=\"title\">&nbsp;</div>\n";
3053         print "<table cellspacing=\"0\">\n" .
3054               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3055               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3056               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3057         # use per project git URL list in $projectroot/$project/cloneurl
3058         # or make project git URL from git base URL and project name
3059         my $url_tag = "URL";
3060         my @url_list = git_get_project_url_list($project);
3061         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3062         foreach my $git_url (@url_list) {
3063                 next unless $git_url;
3064                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3065                 $url_tag = "";
3066         }
3067         print "</table>\n";
3068
3069         if (-s "$projectroot/$project/README.html") {
3070                 if (open my $fd, "$projectroot/$project/README.html") {
3071                         print "<div class=\"title\">readme</div>\n";
3072                         print $_ while (<$fd>);
3073                         close $fd;
3074                 }
3075         }
3076
3077         # we need to request one more than 16 (0..15) to check if
3078         # those 16 are all
3079         my @commitlist = parse_commits($head, 17);
3080         git_print_header_div('shortlog');
3081         git_shortlog_body(\@commitlist, 0, 15, $refs,
3082                           $#commitlist <=  15 ? undef :
3083                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3084
3085         if (@taglist) {
3086                 git_print_header_div('tags');
3087                 git_tags_body(\@taglist, 0, 15,
3088                               $#taglist <=  15 ? undef :
3089                               $cgi->a({-href => href(action=>"tags")}, "..."));
3090         }
3091
3092         if (@headlist) {
3093                 git_print_header_div('heads');
3094                 git_heads_body(\@headlist, $head, 0, 15,
3095                                $#headlist <= 15 ? undef :
3096                                $cgi->a({-href => href(action=>"heads")}, "..."));
3097         }
3098
3099         if (@forklist) {
3100                 git_print_header_div('forks');
3101                 git_project_list_body(\@forklist, undef, 0, 15,
3102                                       $#forklist <= 15 ? undef :
3103                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3104                                       'noheader');
3105         }
3106
3107         git_footer_html();
3108 }
3109
3110 sub git_tag {
3111         my $head = git_get_head_hash($project);
3112         git_header_html();
3113         git_print_page_nav('','', $head,undef,$head);
3114         my %tag = parse_tag($hash);
3115         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3116         print "<div class=\"title_text\">\n" .
3117               "<table cellspacing=\"0\">\n" .
3118               "<tr>\n" .
3119               "<td>object</td>\n" .
3120               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3121                                $tag{'object'}) . "</td>\n" .
3122               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3123                                               $tag{'type'}) . "</td>\n" .
3124               "</tr>\n";
3125         if (defined($tag{'author'})) {
3126                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3127                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3128                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3129                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3130                         "</td></tr>\n";
3131         }
3132         print "</table>\n\n" .
3133               "</div>\n";
3134         print "<div class=\"page_body\">";
3135         my $comment = $tag{'comment'};
3136         foreach my $line (@$comment) {
3137                 chomp $line;
3138                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3139         }
3140         print "</div>\n";
3141         git_footer_html();
3142 }
3143
3144 sub git_blame2 {
3145         my $fd;
3146         my $ftype;
3147
3148         my ($have_blame) = gitweb_check_feature('blame');
3149         if (!$have_blame) {
3150                 die_error('403 Permission denied', "Permission denied");
3151         }
3152         die_error('404 Not Found', "File name not defined") if (!$file_name);
3153         $hash_base ||= git_get_head_hash($project);
3154         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3155         my %co = parse_commit($hash_base)
3156                 or die_error(undef, "Reading commit failed");
3157         if (!defined $hash) {
3158                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3159                         or die_error(undef, "Error looking up file");
3160         }
3161         $ftype = git_get_type($hash);
3162         if ($ftype !~ "blob") {
3163                 die_error("400 Bad Request", "Object is not a blob");
3164         }
3165         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3166               $file_name, $hash_base)
3167                 or die_error(undef, "Open git-blame failed");
3168         git_header_html();
3169         my $formats_nav =
3170                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3171                         "blob") .
3172                 " | " .
3173                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3174                         "history") .
3175                 " | " .
3176                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3177                         "HEAD");
3178         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3179         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3180         git_print_page_path($file_name, $ftype, $hash_base);
3181         my @rev_color = (qw(light2 dark2));
3182         my $num_colors = scalar(@rev_color);
3183         my $current_color = 0;
3184         my $last_rev;
3185         print <<HTML;
3186 <div class="page_body">
3187 <table class="blame">
3188 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3189 HTML
3190         my %metainfo = ();
3191         while (1) {
3192                 $_ = <$fd>;
3193                 last unless defined $_;
3194                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3195                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3196                 if (!exists $metainfo{$full_rev}) {
3197                         $metainfo{$full_rev} = {};
3198                 }
3199                 my $meta = $metainfo{$full_rev};
3200                 while (<$fd>) {
3201                         last if (s/^\t//);
3202                         if (/^(\S+) (.*)$/) {
3203                                 $meta->{$1} = $2;
3204                         }
3205                 }
3206                 my $data = $_;
3207                 chomp $data;
3208                 my $rev = substr($full_rev, 0, 8);
3209                 my $author = $meta->{'author'};
3210                 my %date = parse_date($meta->{'author-time'},
3211                                       $meta->{'author-tz'});
3212                 my $date = $date{'iso-tz'};
3213                 if ($group_size) {
3214                         $current_color = ++$current_color % $num_colors;
3215                 }
3216                 print "<tr class=\"$rev_color[$current_color]\">\n";
3217                 if ($group_size) {
3218                         print "<td class=\"sha1\"";
3219                         print " title=\"". esc_html($author) . ", $date\"";
3220                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3221                         print ">";
3222                         print $cgi->a({-href => href(action=>"commit",
3223                                                      hash=>$full_rev,
3224                                                      file_name=>$file_name)},
3225                                       esc_html($rev));
3226                         print "</td>\n";
3227                 }
3228                 my $blamed = href(action => 'blame',
3229                                   file_name => $meta->{'filename'},
3230                                   hash_base => $full_rev);
3231                 print "<td class=\"linenr\">";
3232                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3233                                 -id => "l$lineno",
3234                                 -class => "linenr" },
3235                               esc_html($lineno));
3236                 print "</td>";
3237                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3238                 print "</tr>\n";
3239         }
3240         print "</table>\n";
3241         print "</div>";
3242         close $fd
3243                 or print "Reading blob failed\n";
3244         git_footer_html();
3245 }
3246
3247 sub git_blame {
3248         my $fd;
3249
3250         my ($have_blame) = gitweb_check_feature('blame');
3251         if (!$have_blame) {
3252                 die_error('403 Permission denied', "Permission denied");
3253         }
3254         die_error('404 Not Found', "File name not defined") if (!$file_name);
3255         $hash_base ||= git_get_head_hash($project);
3256         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3257         my %co = parse_commit($hash_base)
3258                 or die_error(undef, "Reading commit failed");
3259         if (!defined $hash) {
3260                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3261                         or die_error(undef, "Error lookup file");
3262         }
3263         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3264                 or die_error(undef, "Open git-annotate failed");
3265         git_header_html();
3266         my $formats_nav =
3267                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3268                         "blob") .
3269                 " | " .
3270                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3271                         "history") .
3272                 " | " .
3273                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3274                         "HEAD");
3275         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3276         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3277         git_print_page_path($file_name, 'blob', $hash_base);
3278         print "<div class=\"page_body\">\n";
3279         print <<HTML;
3280 <table class="blame">
3281   <tr>
3282     <th>Commit</th>
3283     <th>Age</th>
3284     <th>Author</th>
3285     <th>Line</th>
3286     <th>Data</th>
3287   </tr>
3288 HTML
3289         my @line_class = (qw(light dark));
3290         my $line_class_len = scalar (@line_class);
3291         my $line_class_num = $#line_class;
3292         while (my $line = <$fd>) {
3293                 my $long_rev;
3294                 my $short_rev;
3295                 my $author;
3296                 my $time;
3297                 my $lineno;
3298                 my $data;
3299                 my $age;
3300                 my $age_str;
3301                 my $age_class;
3302
3303                 chomp $line;
3304                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3305
3306                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3307                         $long_rev = $1;
3308                         $author   = $2;
3309                         $time     = $3;
3310                         $lineno   = $4;
3311                         $data     = $5;
3312                 } else {
3313                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3314                         next;
3315                 }
3316                 $short_rev  = substr ($long_rev, 0, 8);
3317                 $age        = time () - $time;
3318                 $age_str    = age_string ($age);
3319                 $age_str    =~ s/ /&nbsp;/g;
3320                 $age_class  = age_class($age);
3321                 $author     = esc_html ($author);
3322                 $author     =~ s/ /&nbsp;/g;
3323
3324                 $data = untabify($data);
3325                 $data = esc_html ($data);
3326
3327                 print <<HTML;
3328   <tr class="$line_class[$line_class_num]">
3329     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3330     <td class="$age_class">$age_str</td>
3331     <td>$author</td>
3332     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3333     <td class="pre">$data</td>
3334   </tr>
3335 HTML
3336         } # while (my $line = <$fd>)
3337         print "</table>\n\n";
3338         close $fd
3339                 or print "Reading blob failed.\n";
3340         print "</div>";
3341         git_footer_html();
3342 }
3343
3344 sub git_tags {
3345         my $head = git_get_head_hash($project);
3346         git_header_html();
3347         git_print_page_nav('','', $head,undef,$head);
3348         git_print_header_div('summary', $project);
3349
3350         my @tagslist = git_get_tags_list();
3351         if (@tagslist) {
3352                 git_tags_body(\@tagslist);
3353         }
3354         git_footer_html();
3355 }
3356
3357 sub git_heads {
3358         my $head = git_get_head_hash($project);
3359         git_header_html();
3360         git_print_page_nav('','', $head,undef,$head);
3361         git_print_header_div('summary', $project);
3362
3363         my @headslist = git_get_heads_list();
3364         if (@headslist) {
3365                 git_heads_body(\@headslist, $head);
3366         }
3367         git_footer_html();
3368 }
3369
3370 sub git_blob_plain {
3371         my $expires;
3372
3373         if (!defined $hash) {
3374                 if (defined $file_name) {
3375                         my $base = $hash_base || git_get_head_hash($project);
3376                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3377                                 or die_error(undef, "Error lookup file");
3378                 } else {
3379                         die_error(undef, "No file name defined");
3380                 }
3381         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3382                 # blobs defined by non-textual hash id's can be cached
3383                 $expires = "+1d";
3384         }
3385
3386         my $type = shift;
3387         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3388                 or die_error(undef, "Couldn't cat $file_name, $hash");
3389
3390         $type ||= blob_mimetype($fd, $file_name);
3391
3392         # save as filename, even when no $file_name is given
3393         my $save_as = "$hash";
3394         if (defined $file_name) {
3395                 $save_as = $file_name;
3396         } elsif ($type =~ m/^text\//) {
3397                 $save_as .= '.txt';
3398         }
3399
3400         print $cgi->header(
3401                 -type => "$type",
3402                 -expires=>$expires,
3403                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3404         undef $/;
3405         binmode STDOUT, ':raw';
3406         print <$fd>;
3407         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3408         $/ = "\n";
3409         close $fd;
3410 }
3411
3412 sub git_blob {
3413         my $expires;
3414
3415         if (!defined $hash) {
3416                 if (defined $file_name) {
3417                         my $base = $hash_base || git_get_head_hash($project);
3418                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3419                                 or die_error(undef, "Error lookup file");
3420                 } else {
3421                         die_error(undef, "No file name defined");
3422                 }
3423         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3424                 # blobs defined by non-textual hash id's can be cached
3425                 $expires = "+1d";
3426         }
3427
3428         my ($have_blame) = gitweb_check_feature('blame');
3429         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3430                 or die_error(undef, "Couldn't cat $file_name, $hash");
3431         my $mimetype = blob_mimetype($fd, $file_name);
3432         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3433                 close $fd;
3434                 return git_blob_plain($mimetype);
3435         }
3436         # we can have blame only for text/* mimetype
3437         $have_blame &&= ($mimetype =~ m!^text/!);
3438
3439         git_header_html(undef, $expires);
3440         my $formats_nav = '';
3441         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3442                 if (defined $file_name) {
3443                         if ($have_blame) {
3444                                 $formats_nav .=
3445                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3446                                                                hash=>$hash, file_name=>$file_name)},
3447                                                 "blame") .
3448                                         " | ";
3449                         }
3450                         $formats_nav .=
3451                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3452                                                        hash=>$hash, file_name=>$file_name)},
3453                                         "history") .
3454                                 " | " .
3455                                 $cgi->a({-href => href(action=>"blob_plain",
3456                                                        hash=>$hash, file_name=>$file_name)},
3457                                         "raw") .
3458                                 " | " .
3459                                 $cgi->a({-href => href(action=>"blob",
3460                                                        hash_base=>"HEAD", file_name=>$file_name)},
3461                                         "HEAD");
3462                 } else {
3463                         $formats_nav .=
3464                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3465                 }
3466                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3467                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3468         } else {
3469                 print "<div class=\"page_nav\">\n" .
3470                       "<br/><br/></div>\n" .
3471                       "<div class=\"title\">$hash</div>\n";
3472         }
3473         git_print_page_path($file_name, "blob", $hash_base);
3474         print "<div class=\"page_body\">\n";
3475         if ($mimetype =~ m!^text/!) {
3476                 my $nr;
3477                 while (my $line = <$fd>) {
3478                         chomp $line;
3479                         $nr++;
3480                         $line = untabify($line);
3481                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3482                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3483                 }
3484         } elsif ($mimetype =~ m!^image/!) {
3485                 print qq!<img type="$mimetype"!;
3486                 if ($file_name) {
3487                         print qq! alt="$file_name" title="$file_name"!;
3488                 }
3489                 print qq! src="! .
3490                       href(action=>"blob_plain", hash=>$hash,
3491                            hash_base=>$hash_base, file_name=>$file_name) .
3492                       qq!" />\n!;
3493         }
3494         close $fd
3495                 or print "Reading blob failed.\n";
3496         print "</div>";
3497         git_footer_html();
3498 }
3499
3500 sub git_tree {
3501         my $have_snapshot = gitweb_have_snapshot();
3502
3503         if (!defined $hash_base) {
3504                 $hash_base = "HEAD";
3505         }
3506         if (!defined $hash) {
3507                 if (defined $file_name) {
3508                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3509                 } else {
3510                         $hash = $hash_base;
3511                 }
3512         }
3513         $/ = "\0";
3514         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3515                 or die_error(undef, "Open git-ls-tree failed");
3516         my @entries = map { chomp; $_ } <$fd>;
3517         close $fd or die_error(undef, "Reading tree failed");
3518         $/ = "\n";
3519
3520         my $refs = git_get_references();
3521         my $ref = format_ref_marker($refs, $hash_base);
3522         git_header_html();
3523         my $basedir = '';
3524         my ($have_blame) = gitweb_check_feature('blame');
3525         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3526                 my @views_nav = ();
3527                 if (defined $file_name) {
3528                         push @views_nav,
3529                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3530                                                        hash=>$hash, file_name=>$file_name)},
3531                                         "history"),
3532                                 $cgi->a({-href => href(action=>"tree",
3533                                                        hash_base=>"HEAD", file_name=>$file_name)},
3534                                         "HEAD"),
3535                 }
3536                 if ($have_snapshot) {
3537                         # FIXME: Should be available when we have no hash base as well.
3538                         push @views_nav,
3539                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3540                                         "snapshot");
3541                 }
3542                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3543                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3544         } else {
3545                 undef $hash_base;
3546                 print "<div class=\"page_nav\">\n";
3547                 print "<br/><br/></div>\n";
3548                 print "<div class=\"title\">$hash</div>\n";
3549         }
3550         if (defined $file_name) {
3551                 $basedir = $file_name;
3552                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3553                         $basedir .= '/';
3554                 }
3555         }
3556         git_print_page_path($file_name, 'tree', $hash_base);
3557         print "<div class=\"page_body\">\n";
3558         print "<table cellspacing=\"0\">\n";
3559         my $alternate = 1;
3560         # '..' (top directory) link if possible
3561         if (defined $hash_base &&
3562             defined $file_name && $file_name =~ m![^/]+$!) {
3563                 if ($alternate) {
3564                         print "<tr class=\"dark\">\n";
3565                 } else {
3566                         print "<tr class=\"light\">\n";
3567                 }
3568                 $alternate ^= 1;
3569
3570                 my $up = $file_name;
3571                 $up =~ s!/?[^/]+$!!;
3572                 undef $up unless $up;
3573                 # based on git_print_tree_entry
3574                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3575                 print '<td class="list">';
3576                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3577                                              file_name=>$up)},
3578                               "..");
3579                 print "</td>\n";
3580                 print "<td class=\"link\"></td>\n";
3581
3582                 print "</tr>\n";
3583         }
3584         foreach my $line (@entries) {
3585                 my %t = parse_ls_tree_line($line, -z => 1);
3586
3587                 if ($alternate) {
3588                         print "<tr class=\"dark\">\n";
3589                 } else {
3590                         print "<tr class=\"light\">\n";
3591                 }
3592                 $alternate ^= 1;
3593
3594                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3595
3596                 print "</tr>\n";
3597         }
3598         print "</table>\n" .
3599               "</div>";
3600         git_footer_html();
3601 }
3602
3603 sub git_snapshot {
3604         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3605         my $have_snapshot = (defined $ctype && defined $suffix);
3606         if (!$have_snapshot) {
3607                 die_error('403 Permission denied', "Permission denied");
3608         }
3609
3610         if (!defined $hash) {
3611                 $hash = git_get_head_hash($project);
3612         }
3613
3614         my $filename = basename($project) . "-$hash.tar.$suffix";
3615
3616         print $cgi->header(
3617                 -type => "application/$ctype",
3618                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3619                 -status => '200 OK');
3620
3621         my $git = git_cmd_str();
3622         my $name = $project;
3623         $name =~ s/\047/\047\\\047\047/g;
3624         open my $fd, "-|",
3625         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3626                 or die_error(undef, "Execute git-tar-tree failed.");
3627         binmode STDOUT, ':raw';
3628         print <$fd>;
3629         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3630         close $fd;
3631
3632 }
3633
3634 sub git_log {
3635         my $head = git_get_head_hash($project);
3636         if (!defined $hash) {
3637                 $hash = $head;
3638         }
3639         if (!defined $page) {
3640                 $page = 0;
3641         }
3642         my $refs = git_get_references();
3643
3644         my @commitlist = parse_commits($hash, 101, (100 * $page));
3645
3646         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3647
3648         git_header_html();
3649         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3650
3651         if (!@commitlist) {
3652                 my %co = parse_commit($hash);
3653
3654                 git_print_header_div('summary', $project);
3655                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3656         }
3657         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3658         for (my $i = 0; $i <= $to; $i++) {
3659                 my %co = %{$commitlist[$i]};
3660                 next if !%co;
3661                 my $commit = $co{'id'};
3662                 my $ref = format_ref_marker($refs, $commit);
3663                 my %ad = parse_date($co{'author_epoch'});
3664                 git_print_header_div('commit',
3665                                "<span class=\"age\">$co{'age_string'}</span>" .
3666                                esc_html($co{'title'}) . $ref,
3667                                $commit);
3668                 print "<div class=\"title_text\">\n" .
3669                       "<div class=\"log_link\">\n" .
3670                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3671                       " | " .
3672                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3673                       " | " .
3674                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3675                       "<br/>\n" .
3676                       "</div>\n" .
3677                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3678                       "</div>\n";
3679
3680                 print "<div class=\"log_body\">\n";
3681                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3682                 print "</div>\n";
3683         }
3684         if ($#commitlist >= 100) {
3685                 print "<div class=\"page_nav\">\n";
3686                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3687                                -accesskey => "n", -title => "Alt-n"}, "next");
3688                 print "</div>\n";
3689         }
3690         git_footer_html();
3691 }
3692
3693 sub git_commit {
3694         $hash ||= $hash_base || "HEAD";
3695         my %co = parse_commit($hash);
3696         if (!%co) {
3697                 die_error(undef, "Unknown commit object");
3698         }
3699         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3700         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3701
3702         my $parent  = $co{'parent'};
3703         my $parents = $co{'parents'}; # listref
3704
3705         # we need to prepare $formats_nav before any parameter munging
3706         my $formats_nav;
3707         if (!defined $parent) {
3708                 # --root commitdiff
3709                 $formats_nav .= '(initial)';
3710         } elsif (@$parents == 1) {
3711                 # single parent commit
3712                 $formats_nav .=
3713                         '(parent: ' .
3714                         $cgi->a({-href => href(action=>"commit",
3715                                                hash=>$parent)},
3716                                 esc_html(substr($parent, 0, 7))) .
3717                         ')';
3718         } else {
3719                 # merge commit
3720                 $formats_nav .=
3721                         '(merge: ' .
3722                         join(' ', map {
3723                                 $cgi->a({-href => href(action=>"commitdiff",
3724                                                        hash=>$_)},
3725                                         esc_html(substr($_, 0, 7)));
3726                         } @$parents ) .
3727                         ')';
3728         }
3729
3730         if (!defined $parent) {
3731                 $parent = "--root";
3732         }
3733         my @difftree;
3734         if (@$parents <= 1) {
3735                 # difftree output is not printed for merges
3736                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3737                         @diff_opts, $parent, $hash, "--"
3738                                 or die_error(undef, "Open git-diff-tree failed");
3739                 @difftree = map { chomp; $_ } <$fd>;
3740                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3741         }
3742
3743         # non-textual hash id's can be cached
3744         my $expires;
3745         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3746                 $expires = "+1d";
3747         }
3748         my $refs = git_get_references();
3749         my $ref = format_ref_marker($refs, $co{'id'});
3750
3751         my $have_snapshot = gitweb_have_snapshot();
3752
3753         git_header_html(undef, $expires);
3754         git_print_page_nav('commit', '',
3755                            $hash, $co{'tree'}, $hash,
3756                            $formats_nav);
3757
3758         if (defined $co{'parent'}) {
3759                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3760         } else {
3761                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3762         }
3763         print "<div class=\"title_text\">\n" .
3764               "<table cellspacing=\"0\">\n";
3765         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3766               "<tr>" .
3767               "<td></td><td> $ad{'rfc2822'}";
3768         if ($ad{'hour_local'} < 6) {
3769                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3770                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3771         } else {
3772                 printf(" (%02d:%02d %s)",
3773                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3774         }
3775         print "</td>" .
3776               "</tr>\n";
3777         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3778         print "<tr><td></td><td> $cd{'rfc2822'}" .
3779               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3780               "</td></tr>\n";
3781         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3782         print "<tr>" .
3783               "<td>tree</td>" .
3784               "<td class=\"sha1\">" .
3785               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3786                        class => "list"}, $co{'tree'}) .
3787               "</td>" .
3788               "<td class=\"link\">" .
3789               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3790                       "tree");
3791         if ($have_snapshot) {
3792                 print " | " .
3793                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3794         }
3795         print "</td>" .
3796               "</tr>\n";
3797
3798         foreach my $par (@$parents) {
3799                 print "<tr>" .
3800                       "<td>parent</td>" .
3801                       "<td class=\"sha1\">" .
3802                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3803                                class => "list"}, $par) .
3804                       "</td>" .
3805                       "<td class=\"link\">" .
3806                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3807                       " | " .
3808                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3809                       "</td>" .
3810                       "</tr>\n";
3811         }
3812         print "</table>".
3813               "</div>\n";
3814
3815         print "<div class=\"page_body\">\n";
3816         git_print_log($co{'comment'});
3817         print "</div>\n";
3818
3819         if (@$parents <= 1) {
3820                 # do not output difftree/whatchanged for merges
3821                 git_difftree_body(\@difftree, $hash, $parent);
3822         }
3823
3824         git_footer_html();
3825 }
3826
3827 sub git_object {
3828         # object is defined by:
3829         # - hash or hash_base alone
3830         # - hash_base and file_name
3831         my $type;
3832
3833         # - hash or hash_base alone
3834         if ($hash || ($hash_base && !defined $file_name)) {
3835                 my $object_id = $hash || $hash_base;
3836
3837                 my $git_command = git_cmd_str();
3838                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3839                         or die_error('404 Not Found', "Object does not exist");
3840                 $type = <$fd>;
3841                 chomp $type;
3842                 close $fd
3843                         or die_error('404 Not Found', "Object does not exist");
3844
3845         # - hash_base and file_name
3846         } elsif ($hash_base && defined $file_name) {
3847                 $file_name =~ s,/+$,,;
3848
3849                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3850                         or die_error('404 Not Found', "Base object does not exist");
3851
3852                 # here errors should not hapen
3853                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3854                         or die_error(undef, "Open git-ls-tree failed");
3855                 my $line = <$fd>;
3856                 close $fd;
3857
3858                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3859                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3860                         die_error('404 Not Found', "File or directory for given base does not exist");
3861                 }
3862                 $type = $2;
3863                 $hash = $3;
3864         } else {
3865                 die_error('404 Not Found', "Not enough information to find object");
3866         }
3867
3868         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3869                                           hash=>$hash, hash_base=>$hash_base,
3870                                           file_name=>$file_name),
3871                              -status => '302 Found');
3872 }
3873
3874 sub git_blobdiff {
3875         my $format = shift || 'html';
3876
3877         my $fd;
3878         my @difftree;
3879         my %diffinfo;
3880         my $expires;
3881
3882         # preparing $fd and %diffinfo for git_patchset_body
3883         # new style URI
3884         if (defined $hash_base && defined $hash_parent_base) {
3885                 if (defined $file_name) {
3886                         # read raw output
3887                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3888                                 $hash_parent_base, $hash_base,
3889                                 "--", $file_name
3890                                 or die_error(undef, "Open git-diff-tree failed");
3891                         @difftree = map { chomp; $_ } <$fd>;
3892                         close $fd
3893                                 or die_error(undef, "Reading git-diff-tree failed");
3894                         @difftree
3895                                 or die_error('404 Not Found', "Blob diff not found");
3896
3897                 } elsif (defined $hash &&
3898                          $hash =~ /[0-9a-fA-F]{40}/) {
3899                         # try to find filename from $hash
3900
3901                         # read filtered raw output
3902                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3903                                 $hash_parent_base, $hash_base, "--"
3904                                 or die_error(undef, "Open git-diff-tree failed");
3905                         @difftree =
3906                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3907                                 # $hash == to_id
3908                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3909                                 map { chomp; $_ } <$fd>;
3910                         close $fd
3911                                 or die_error(undef, "Reading git-diff-tree failed");
3912                         @difftree
3913                                 or die_error('404 Not Found', "Blob diff not found");
3914
3915                 } else {
3916                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3917                 }
3918
3919                 if (@difftree > 1) {
3920                         die_error('404 Not Found', "Ambiguous blob diff specification");
3921                 }
3922
3923                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3924                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3925                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3926
3927                 $hash_parent ||= $diffinfo{'from_id'};
3928                 $hash        ||= $diffinfo{'to_id'};
3929
3930                 # non-textual hash id's can be cached
3931                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3932                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3933                         $expires = '+1d';
3934                 }
3935
3936                 # open patch output
3937                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3938                         '-p', $hash_parent_base, $hash_base,
3939                         "--", $file_name
3940                         or die_error(undef, "Open git-diff-tree failed");
3941         }
3942
3943         # old/legacy style URI
3944         if (!%diffinfo && # if new style URI failed
3945             defined $hash && defined $hash_parent) {
3946                 # fake git-diff-tree raw output
3947                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3948                 $diffinfo{'from_id'} = $hash_parent;
3949                 $diffinfo{'to_id'}   = $hash;
3950                 if (defined $file_name) {
3951                         if (defined $file_parent) {
3952                                 $diffinfo{'status'} = '2';
3953                                 $diffinfo{'from_file'} = $file_parent;
3954                                 $diffinfo{'to_file'}   = $file_name;
3955                         } else { # assume not renamed
3956                                 $diffinfo{'status'} = '1';
3957                                 $diffinfo{'from_file'} = $file_name;
3958                                 $diffinfo{'to_file'}   = $file_name;
3959                         }
3960                 } else { # no filename given
3961                         $diffinfo{'status'} = '2';
3962                         $diffinfo{'from_file'} = $hash_parent;
3963                         $diffinfo{'to_file'}   = $hash;
3964                 }
3965
3966                 # non-textual hash id's can be cached
3967                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3968                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3969                         $expires = '+1d';
3970                 }
3971
3972                 # open patch output
3973                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3974                         $hash_parent, $hash, "--"
3975                         or die_error(undef, "Open git-diff failed");
3976         } else  {
3977                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3978                         unless %diffinfo;
3979         }
3980
3981         # header
3982         if ($format eq 'html') {
3983                 my $formats_nav =
3984                         $cgi->a({-href => href(action=>"blobdiff_plain",
3985                                                hash=>$hash, hash_parent=>$hash_parent,
3986                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3987                                                file_name=>$file_name, file_parent=>$file_parent)},
3988                                 "raw");
3989                 git_header_html(undef, $expires);
3990                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3991                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3992                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3993                 } else {
3994                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3995                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3996                 }
3997                 if (defined $file_name) {
3998                         git_print_page_path($file_name, "blob", $hash_base);
3999                 } else {
4000                         print "<div class=\"page_path\"></div>\n";
4001                 }
4002
4003         } elsif ($format eq 'plain') {
4004                 print $cgi->header(
4005                         -type => 'text/plain',
4006                         -charset => 'utf-8',
4007                         -expires => $expires,
4008                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4009
4010                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4011
4012         } else {
4013                 die_error(undef, "Unknown blobdiff format");
4014         }
4015
4016         # patch
4017         if ($format eq 'html') {
4018                 print "<div class=\"page_body\">\n";
4019
4020                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4021                 close $fd;
4022
4023                 print "</div>\n"; # class="page_body"
4024                 git_footer_html();
4025
4026         } else {
4027                 while (my $line = <$fd>) {
4028                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4029                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4030
4031                         print $line;
4032
4033                         last if $line =~ m!^\+\+\+!;
4034                 }
4035                 local $/ = undef;
4036                 print <$fd>;
4037                 close $fd;
4038         }
4039 }
4040
4041 sub git_blobdiff_plain {
4042         git_blobdiff('plain');
4043 }
4044
4045 sub git_commitdiff {
4046         my $format = shift || 'html';
4047         $hash ||= $hash_base || "HEAD";
4048         my %co = parse_commit($hash);
4049         if (!%co) {
4050                 die_error(undef, "Unknown commit object");
4051         }
4052
4053         # we need to prepare $formats_nav before any parameter munging
4054         my $formats_nav;
4055         if ($format eq 'html') {
4056                 $formats_nav =
4057                         $cgi->a({-href => href(action=>"commitdiff_plain",
4058                                                hash=>$hash, hash_parent=>$hash_parent)},
4059                                 "raw");
4060
4061                 if (defined $hash_parent) {
4062                         # commitdiff with two commits given
4063                         my $hash_parent_short = $hash_parent;
4064                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4065                                 $hash_parent_short = substr($hash_parent, 0, 7);
4066                         }
4067                         $formats_nav .=
4068                                 ' (from: ' .
4069                                 $cgi->a({-href => href(action=>"commitdiff",
4070                                                        hash=>$hash_parent)},
4071                                         esc_html($hash_parent_short)) .
4072                                 ')';
4073                 } elsif (!$co{'parent'}) {
4074                         # --root commitdiff
4075                         $formats_nav .= ' (initial)';
4076                 } elsif (scalar @{$co{'parents'}} == 1) {
4077                         # single parent commit
4078                         $formats_nav .=
4079                                 ' (parent: ' .
4080                                 $cgi->a({-href => href(action=>"commitdiff",
4081                                                        hash=>$co{'parent'})},
4082                                         esc_html(substr($co{'parent'}, 0, 7))) .
4083                                 ')';
4084                 } else {
4085                         # merge commit
4086                         $formats_nav .=
4087                                 ' (merge: ' .
4088                                 join(' ', map {
4089                                         $cgi->a({-href => href(action=>"commitdiff",
4090                                                                hash=>$_)},
4091                                                 esc_html(substr($_, 0, 7)));
4092                                 } @{$co{'parents'}} ) .
4093                                 ')';
4094                 }
4095         }
4096
4097         if (!defined $hash_parent) {
4098                 $hash_parent = $co{'parent'} || '--root';
4099         }
4100
4101         # read commitdiff
4102         my $fd;
4103         my @difftree;
4104         if ($format eq 'html') {
4105                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4106                         "--no-commit-id", "--patch-with-raw", "--full-index",
4107                         $hash_parent, $hash, "--"
4108                         or die_error(undef, "Open git-diff-tree failed");
4109
4110                 while (my $line = <$fd>) {
4111                         chomp $line;
4112                         # empty line ends raw part of diff-tree output
4113                         last unless $line;
4114                         push @difftree, $line;
4115                 }
4116
4117         } elsif ($format eq 'plain') {
4118                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4119                         '-p', $hash_parent, $hash, "--"
4120                         or die_error(undef, "Open git-diff-tree failed");
4121
4122         } else {
4123                 die_error(undef, "Unknown commitdiff format");
4124         }
4125
4126         # non-textual hash id's can be cached
4127         my $expires;
4128         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4129                 $expires = "+1d";
4130         }
4131
4132         # write commit message
4133         if ($format eq 'html') {
4134                 my $refs = git_get_references();
4135                 my $ref = format_ref_marker($refs, $co{'id'});
4136
4137                 git_header_html(undef, $expires);
4138                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4139                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4140                 git_print_authorship(\%co);
4141                 print "<div class=\"page_body\">\n";
4142                 if (@{$co{'comment'}} > 1) {
4143                         print "<div class=\"log\">\n";
4144                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4145                         print "</div>\n"; # class="log"
4146                 }
4147
4148         } elsif ($format eq 'plain') {
4149                 my $refs = git_get_references("tags");
4150                 my $tagname = git_get_rev_name_tags($hash);
4151                 my $filename = basename($project) . "-$hash.patch";
4152
4153                 print $cgi->header(
4154                         -type => 'text/plain',
4155                         -charset => 'utf-8',
4156                         -expires => $expires,
4157                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4158                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4159                 print <<TEXT;
4160 From: $co{'author'}
4161 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4162 Subject: $co{'title'}
4163 TEXT
4164                 print "X-Git-Tag: $tagname\n" if $tagname;
4165                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4166
4167                 foreach my $line (@{$co{'comment'}}) {
4168                         print "$line\n";
4169                 }
4170                 print "---\n\n";
4171         }
4172
4173         # write patch
4174         if ($format eq 'html') {
4175                 git_difftree_body(\@difftree, $hash, $hash_parent);
4176                 print "<br/>\n";
4177
4178                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4179                 close $fd;
4180                 print "</div>\n"; # class="page_body"
4181                 git_footer_html();
4182
4183         } elsif ($format eq 'plain') {
4184                 local $/ = undef;
4185                 print <$fd>;
4186                 close $fd
4187                         or print "Reading git-diff-tree failed\n";
4188         }
4189 }
4190
4191 sub git_commitdiff_plain {
4192         git_commitdiff('plain');
4193 }
4194
4195 sub git_history {
4196         if (!defined $hash_base) {
4197                 $hash_base = git_get_head_hash($project);
4198         }
4199         if (!defined $page) {
4200                 $page = 0;
4201         }
4202         my $ftype;
4203         my %co = parse_commit($hash_base);
4204         if (!%co) {
4205                 die_error(undef, "Unknown commit object");
4206         }
4207
4208         my $refs = git_get_references();
4209         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4210
4211         if (!defined $hash && defined $file_name) {
4212                 $hash = git_get_hash_by_path($hash_base, $file_name);
4213         }
4214         if (defined $hash) {
4215                 $ftype = git_get_type($hash);
4216         }
4217
4218         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4219
4220         my $paging_nav = '';
4221         if ($page > 0) {
4222                 $paging_nav .=
4223                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4224                                                file_name=>$file_name)},
4225                                 "first");
4226                 $paging_nav .= " &sdot; " .
4227                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4228                                                file_name=>$file_name, page=>$page-1),
4229                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4230         } else {
4231                 $paging_nav .= "first";
4232                 $paging_nav .= " &sdot; prev";
4233         }
4234         if ($#commitlist >= 100) {
4235                 $paging_nav .= " &sdot; " .
4236                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4237                                                file_name=>$file_name, page=>$page+1),
4238                                  -accesskey => "n", -title => "Alt-n"}, "next");
4239         } else {
4240                 $paging_nav .= " &sdot; next";
4241         }
4242         my $next_link = '';
4243         if ($#commitlist >= 100) {
4244                 $next_link =
4245                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4246                                                file_name=>$file_name, page=>$page+1),
4247                                  -accesskey => "n", -title => "Alt-n"}, "next");
4248         }
4249
4250         git_header_html();
4251         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4252         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4253         git_print_page_path($file_name, $ftype, $hash_base);
4254
4255         git_history_body(\@commitlist, 0, 99,
4256                          $refs, $hash_base, $ftype, $next_link);
4257
4258         git_footer_html();
4259 }
4260
4261 sub git_search {
4262         my ($have_search) = gitweb_check_feature('search');
4263         if (!$have_search) {
4264                 die_error('403 Permission denied', "Permission denied");
4265         }
4266         if (!defined $searchtext) {
4267                 die_error(undef, "Text field empty");
4268         }
4269         if (!defined $hash) {
4270                 $hash = git_get_head_hash($project);
4271         }
4272         my %co = parse_commit($hash);
4273         if (!%co) {
4274                 die_error(undef, "Unknown commit object");
4275         }
4276         if (!defined $page) {
4277                 $page = 0;
4278         }
4279
4280         $searchtype ||= 'commit';
4281         if ($searchtype eq 'pickaxe') {
4282                 # pickaxe may take all resources of your box and run for several minutes
4283                 # with every query - so decide by yourself how public you make this feature
4284                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4285                 if (!$have_pickaxe) {
4286                         die_error('403 Permission denied', "Permission denied");
4287                 }
4288         }
4289
4290         git_header_html();
4291
4292         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4293                 my $greptype;
4294                 if ($searchtype eq 'commit') {
4295                         $greptype = "--grep=";
4296                 } elsif ($searchtype eq 'author') {
4297                         $greptype = "--author=";
4298                 } elsif ($searchtype eq 'committer') {
4299                         $greptype = "--committer=";
4300                 }
4301                 $greptype .= $searchtext;
4302                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4303
4304                 my $paging_nav = '';
4305                 if ($page > 0) {
4306                         $paging_nav .=
4307                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4308                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4309                                         "first");
4310                         $paging_nav .= " &sdot; " .
4311                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4312                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4313                                                        page=>$page-1),
4314                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4315                 } else {
4316                         $paging_nav .= "first";
4317                         $paging_nav .= " &sdot; prev";
4318                 }
4319                 if ($#commitlist >= 100) {
4320                         $paging_nav .= " &sdot; " .
4321                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4322                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4323                                                        page=>$page+1),
4324                                          -accesskey => "n", -title => "Alt-n"}, "next");
4325                 } else {
4326                         $paging_nav .= " &sdot; next";
4327                 }
4328                 my $next_link = '';
4329                 if ($#commitlist >= 100) {
4330                         $next_link =
4331                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4332                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4333                                                        page=>$page+1),
4334                                          -accesskey => "n", -title => "Alt-n"}, "next");
4335                 }
4336
4337                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4338                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4339                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4340         }
4341
4342         if ($searchtype eq 'pickaxe') {
4343                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4344                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4345
4346                 print "<table cellspacing=\"0\">\n";
4347                 my $alternate = 1;
4348                 $/ = "\n";
4349                 my $git_command = git_cmd_str();
4350                 open my $fd, "-|", "$git_command rev-list $hash | " .
4351                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4352                 undef %co;
4353                 my @files;
4354                 while (my $line = <$fd>) {
4355                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4356                                 my %set;
4357                                 $set{'file'} = $6;
4358                                 $set{'from_id'} = $3;
4359                                 $set{'to_id'} = $4;
4360                                 $set{'id'} = $set{'to_id'};
4361                                 if ($set{'id'} =~ m/0{40}/) {
4362                                         $set{'id'} = $set{'from_id'};
4363                                 }
4364                                 if ($set{'id'} =~ m/0{40}/) {
4365                                         next;
4366                                 }
4367                                 push @files, \%set;
4368                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4369                                 if (%co) {
4370                                         if ($alternate) {
4371                                                 print "<tr class=\"dark\">\n";
4372                                         } else {
4373                                                 print "<tr class=\"light\">\n";
4374                                         }
4375                                         $alternate ^= 1;
4376                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4377                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4378                                               "<td>" .
4379                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4380                                                       -class => "list subject"},
4381                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4382                                         while (my $setref = shift @files) {
4383                                                 my %set = %$setref;
4384                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4385                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4386                                                               -class => "list"},
4387                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4388                                                       "<br/>\n";
4389                                         }
4390                                         print "</td>\n" .
4391                                               "<td class=\"link\">" .
4392                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4393                                               " | " .
4394                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4395                                         print "</td>\n" .
4396                                               "</tr>\n";
4397                                 }
4398                                 %co = parse_commit($1);
4399                         }
4400                 }
4401                 close $fd;
4402
4403                 print "</table>\n";
4404         }
4405         git_footer_html();
4406 }
4407
4408 sub git_search_help {
4409         git_header_html();
4410         git_print_page_nav('','', $hash,$hash,$hash);
4411         print <<EOT;
4412 <dl>
4413 <dt><b>commit</b></dt>
4414 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4415 <dt><b>author</b></dt>
4416 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4417 <dt><b>committer</b></dt>
4418 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4419 EOT
4420         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4421         if ($have_pickaxe) {
4422                 print <<EOT;
4423 <dt><b>pickaxe</b></dt>
4424 <dd>All commits that caused the string to appear or disappear from any file (changes that
4425 added, removed or "modified" the string) will be listed. This search can take a while and
4426 takes a lot of strain on the server, so please use it wisely.</dd>
4427 EOT
4428         }
4429         print "</dl>\n";
4430         git_footer_html();
4431 }
4432
4433 sub git_shortlog {
4434         my $head = git_get_head_hash($project);
4435         if (!defined $hash) {
4436                 $hash = $head;
4437         }
4438         if (!defined $page) {
4439                 $page = 0;
4440         }
4441         my $refs = git_get_references();
4442
4443         my @commitlist = parse_commits($head, 101, (100 * $page));
4444
4445         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4446         my $next_link = '';
4447         if ($#commitlist >= 100) {
4448                 $next_link =
4449                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4450                                  -accesskey => "n", -title => "Alt-n"}, "next");
4451         }
4452
4453         git_header_html();
4454         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4455         git_print_header_div('summary', $project);
4456
4457         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4458
4459         git_footer_html();
4460 }
4461
4462 ## ......................................................................
4463 ## feeds (RSS, Atom; OPML)
4464
4465 sub git_feed {
4466         my $format = shift || 'atom';
4467         my ($have_blame) = gitweb_check_feature('blame');
4468
4469         # Atom: http://www.atomenabled.org/developers/syndication/
4470         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4471         if ($format ne 'rss' && $format ne 'atom') {
4472                 die_error(undef, "Unknown web feed format");
4473         }
4474
4475         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4476         my $head = $hash || 'HEAD';
4477         my @commitlist = parse_commits($head, 150);
4478
4479         my %latest_commit;
4480         my %latest_date;
4481         my $content_type = "application/$format+xml";
4482         if (defined $cgi->http('HTTP_ACCEPT') &&
4483                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4484                 # browser (feed reader) prefers text/xml
4485                 $content_type = 'text/xml';
4486         }
4487         if (defined($commitlist[0])) {
4488                 %latest_commit = %{$commitlist[0]};
4489                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4490                 print $cgi->header(
4491                         -type => $content_type,
4492                         -charset => 'utf-8',
4493                         -last_modified => $latest_date{'rfc2822'});
4494         } else {
4495                 print $cgi->header(
4496                         -type => $content_type,
4497                         -charset => 'utf-8');
4498         }
4499
4500         # Optimization: skip generating the body if client asks only
4501         # for Last-Modified date.
4502         return if ($cgi->request_method() eq 'HEAD');
4503
4504         # header variables
4505         my $title = "$site_name - $project/$action";
4506         my $feed_type = 'log';
4507         if (defined $hash) {
4508                 $title .= " - '$hash'";
4509                 $feed_type = 'branch log';
4510                 if (defined $file_name) {
4511                         $title .= " :: $file_name";
4512                         $feed_type = 'history';
4513                 }
4514         } elsif (defined $file_name) {
4515                 $title .= " - $file_name";
4516                 $feed_type = 'history';
4517         }
4518         $title .= " $feed_type";
4519         my $descr = git_get_project_description($project);
4520         if (defined $descr) {
4521                 $descr = esc_html($descr);
4522         } else {
4523                 $descr = "$project " .
4524                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4525                          " feed";
4526         }
4527         my $owner = git_get_project_owner($project);
4528         $owner = esc_html($owner);
4529
4530         #header
4531         my $alt_url;
4532         if (defined $file_name) {
4533                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4534         } elsif (defined $hash) {
4535                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4536         } else {
4537                 $alt_url = href(-full=>1, action=>"summary");
4538         }
4539         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4540         if ($format eq 'rss') {
4541                 print <<XML;
4542 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4543 <channel>
4544 XML
4545                 print "<title>$title</title>\n" .
4546                       "<link>$alt_url</link>\n" .
4547                       "<description>$descr</description>\n" .
4548                       "<language>en</language>\n";
4549         } elsif ($format eq 'atom') {
4550                 print <<XML;
4551 <feed xmlns="http://www.w3.org/2005/Atom">
4552 XML
4553                 print "<title>$title</title>\n" .
4554                       "<subtitle>$descr</subtitle>\n" .
4555                       '<link rel="alternate" type="text/html" href="' .
4556                       $alt_url . '" />' . "\n" .
4557                       '<link rel="self" type="' . $content_type . '" href="' .
4558                       $cgi->self_url() . '" />' . "\n" .
4559                       "<id>" . href(-full=>1) . "</id>\n" .
4560                       # use project owner for feed author
4561                       "<author><name>$owner</name></author>\n";
4562                 if (defined $favicon) {
4563                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4564                 }
4565                 if (defined $logo_url) {
4566                         # not twice as wide as tall: 72 x 27 pixels
4567                         print "<logo>" . esc_url($logo) . "</logo>\n";
4568                 }
4569                 if (! %latest_date) {
4570                         # dummy date to keep the feed valid until commits trickle in:
4571                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4572                 } else {
4573                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4574                 }
4575         }
4576
4577         # contents
4578         for (my $i = 0; $i <= $#commitlist; $i++) {
4579                 my %co = %{$commitlist[$i]};
4580                 my $commit = $co{'id'};
4581                 # we read 150, we always show 30 and the ones more recent than 48 hours
4582                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4583                         last;
4584                 }
4585                 my %cd = parse_date($co{'author_epoch'});
4586
4587                 # get list of changed files
4588                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4589                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4590                         or next;
4591                 my @difftree = map { chomp; $_ } <$fd>;
4592                 close $fd
4593                         or next;
4594
4595                 # print element (entry, item)
4596                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4597                 if ($format eq 'rss') {
4598                         print "<item>\n" .
4599                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4600                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4601                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4602                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4603                               "<link>$co_url</link>\n" .
4604                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4605                               "<content:encoded>" .
4606                               "<![CDATA[\n";
4607                 } elsif ($format eq 'atom') {
4608                         print "<entry>\n" .
4609                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4610                               "<updated>$cd{'iso-8601'}</updated>\n" .
4611                               "<author>\n" .
4612                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4613                         if ($co{'author_email'}) {
4614                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4615                         }
4616                         print "</author>\n" .
4617                               # use committer for contributor
4618                               "<contributor>\n" .
4619                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4620                         if ($co{'committer_email'}) {
4621                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4622                         }
4623                         print "</contributor>\n" .
4624                               "<published>$cd{'iso-8601'}</published>\n" .
4625                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4626                               "<id>$co_url</id>\n" .
4627                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4628                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4629                 }
4630                 my $comment = $co{'comment'};
4631                 print "<pre>\n";
4632                 foreach my $line (@$comment) {
4633                         $line = esc_html($line);
4634                         print "$line\n";
4635                 }
4636                 print "</pre><ul>\n";
4637                 foreach my $difftree_line (@difftree) {
4638                         my %difftree = parse_difftree_raw_line($difftree_line);
4639                         next if !$difftree{'from_id'};
4640
4641                         my $file = $difftree{'file'} || $difftree{'to_file'};
4642
4643                         print "<li>" .
4644                               "[" .
4645                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4646                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4647                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4648                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4649                                       -title => "diff"}, 'D');
4650                         if ($have_blame) {
4651                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4652                                                              file_name=>$file, hash_base=>$commit),
4653                                               -title => "blame"}, 'B');
4654                         }
4655                         # if this is not a feed of a file history
4656                         if (!defined $file_name || $file_name ne $file) {
4657                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4658                                                              file_name=>$file, hash=>$commit),
4659                                               -title => "history"}, 'H');
4660                         }
4661                         $file = esc_path($file);
4662                         print "] ".
4663                               "$file</li>\n";
4664                 }
4665                 if ($format eq 'rss') {
4666                         print "</ul>]]>\n" .
4667                               "</content:encoded>\n" .
4668                               "</item>\n";
4669                 } elsif ($format eq 'atom') {
4670                         print "</ul>\n</div>\n" .
4671                               "</content>\n" .
4672                               "</entry>\n";
4673                 }
4674         }
4675
4676         # end of feed
4677         if ($format eq 'rss') {
4678                 print "</channel>\n</rss>\n";
4679         }       elsif ($format eq 'atom') {
4680                 print "</feed>\n";
4681         }
4682 }
4683
4684 sub git_rss {
4685         git_feed('rss');
4686 }
4687
4688 sub git_atom {
4689         git_feed('atom');
4690 }
4691
4692 sub git_opml {
4693         my @list = git_get_projects_list();
4694
4695         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4696         print <<XML;
4697 <?xml version="1.0" encoding="utf-8"?>
4698 <opml version="1.0">
4699 <head>
4700   <title>$site_name OPML Export</title>
4701 </head>
4702 <body>
4703 <outline text="git RSS feeds">
4704 XML
4705
4706         foreach my $pr (@list) {
4707                 my %proj = %$pr;
4708                 my $head = git_get_head_hash($proj{'path'});
4709                 if (!defined $head) {
4710                         next;
4711                 }
4712                 $git_dir = "$projectroot/$proj{'path'}";
4713                 my %co = parse_commit($head);
4714                 if (!%co) {
4715                         next;
4716                 }
4717
4718                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4719                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4720                 my $html = "$my_url?p=$proj{'path'};a=summary";
4721                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4722         }
4723         print <<XML;
4724 </outline>
4725 </body>
4726 </opml>
4727 XML
4728 }