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