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         # Make gitweb consider projects in project root subdirectories
 165         # to be forks of existing projects. Given project $projname.git,
 166         # projects matching $projname/*.git will not be shown in the main
 167         # projects list, instead a '+' mark will be added to $projname
 168         # there and a 'forks' view will be enabled for the project, listing
 169         # all the forks. This feature is supported only if project list
 170         # is taken from a directory, not file.
 171
 172         # To enable system wide have in $GITWEB_CONFIG
 173         # $feature{'forks'}{'default'} = [1];
 174         # Project specific override is not supported.
 175         'forks' => {
 176                 'override' => 0,
 177                 'default' => [0]},
 178 );
 179
 180 sub gitweb_check_feature {
 181         my ($name) = @_;
 182         return unless exists $feature{$name};
 183         my ($sub, $override, @defaults) = (
 184                 $feature{$name}{'sub'},
 185                 $feature{$name}{'override'},
 186                 @{$feature{$name}{'default'}});
 187         if (!$override) { return @defaults; }
 188         if (!defined $sub) {
 189                 warn "feature $name is not overrideable";
 190                 return @defaults;
 191         }
 192         return $sub->(@defaults);
 193 }
 194
 195 sub feature_blame {
 196         my ($val) = git_get_project_config('blame', '--bool');
 197
 198         if ($val eq 'true') {
 199                 return 1;
 200         } elsif ($val eq 'false') {
 201                 return 0;
 202         }
 203
 204         return $_[0];
 205 }
 206
 207 sub feature_snapshot {
 208         my ($ctype, $suffix, $command) = @_;
 209
 210         my ($val) = git_get_project_config('snapshot');
 211
 212         if ($val eq 'gzip') {
 213                 return ('x-gzip', 'gz', 'gzip');
 214         } elsif ($val eq 'bzip2') {
 215                 return ('x-bzip2', 'bz2', 'bzip2');
 216         } elsif ($val eq 'none') {
 217                 return ();
 218         }
 219
 220         return ($ctype, $suffix, $command);
 221 }
 222
 223 sub gitweb_have_snapshot {
 224         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 225         my $have_snapshot = (defined $ctype && defined $suffix);
 226
 227         return $have_snapshot;
 228 }
 229
 230 sub feature_pickaxe {
 231         my ($val) = git_get_project_config('pickaxe', '--bool');
 232
 233         if ($val eq 'true') {
 234                 return (1);
 235         } elsif ($val eq 'false') {
 236                 return (0);
 237         }
 238
 239         return ($_[0]);
 240 }
 241
 242 # checking HEAD file with -e is fragile if the repository was
 243 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 244 # and then pruned.
 245 sub check_head_link {
 246         my ($dir) = @_;
 247         my $headfile = "$dir/HEAD";
 248         return ((-e $headfile) ||
 249                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 250 }
 251
 252 sub check_export_ok {
 253         my ($dir) = @_;
 254         return (check_head_link($dir) &&
 255                 (!$export_ok || -e "$dir/$export_ok"));
 256 }
 257
 258 # rename detection options for git-diff and git-diff-tree
 259 # - default is '-M', with the cost proportional to
 260 #   (number of removed files) * (number of new files).
 261 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 262 #   (number of changed files + number of removed files) * (number of new files)
 263 # - even more costly is '-C', '--find-copies-harder' with cost
 264 #   (number of files in the original tree) * (number of new files)
 265 # - one might want to include '-B' option, e.g. '-B', '-M'
 266 our @diff_opts = ('-M'); # taken from git_commit
 267
 268 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 269 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 270
 271 # version of the core git binary
 272 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 273
 274 $projects_list ||= $projectroot;
 275
 276 # ======================================================================
 277 # input validation and dispatch
 278 our $action = $cgi->param('a');
 279 if (defined $action) {
 280         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 281                 die_error(undef, "Invalid action parameter");
 282         }
 283 }
 284
 285 # parameters which are pathnames
 286 our $project = $cgi->param('p');
 287 if (defined $project) {
 288         if (!validate_pathname($project) ||
 289             !(-d "$projectroot/$project") ||
 290             !check_head_link("$projectroot/$project") ||
 291             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 292             ($strict_export && !project_in_list($project))) {
 293                 undef $project;
 294                 die_error(undef, "No such project");
 295         }
 296 }
 297
 298 our $file_name = $cgi->param('f');
 299 if (defined $file_name) {
 300         if (!validate_pathname($file_name)) {
 301                 die_error(undef, "Invalid file parameter");
 302         }
 303 }
 304
 305 our $file_parent = $cgi->param('fp');
 306 if (defined $file_parent) {
 307         if (!validate_pathname($file_parent)) {
 308                 die_error(undef, "Invalid file parent parameter");
 309         }
 310 }
 311
 312 # parameters which are refnames
 313 our $hash = $cgi->param('h');
 314 if (defined $hash) {
 315         if (!validate_refname($hash)) {
 316                 die_error(undef, "Invalid hash parameter");
 317         }
 318 }
 319
 320 our $hash_parent = $cgi->param('hp');
 321 if (defined $hash_parent) {
 322         if (!validate_refname($hash_parent)) {
 323                 die_error(undef, "Invalid hash parent parameter");
 324         }
 325 }
 326
 327 our $hash_base = $cgi->param('hb');
 328 if (defined $hash_base) {
 329         if (!validate_refname($hash_base)) {
 330                 die_error(undef, "Invalid hash base parameter");
 331         }
 332 }
 333
 334 our $hash_parent_base = $cgi->param('hpb');
 335 if (defined $hash_parent_base) {
 336         if (!validate_refname($hash_parent_base)) {
 337                 die_error(undef, "Invalid hash parent base parameter");
 338         }
 339 }
 340
 341 # other parameters
 342 our $page = $cgi->param('pg');
 343 if (defined $page) {
 344         if ($page =~ m/[^0-9]/) {
 345                 die_error(undef, "Invalid page parameter");
 346         }
 347 }
 348
 349 our $searchtext = $cgi->param('s');
 350 if (defined $searchtext) {
 351         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 352                 die_error(undef, "Invalid search parameter");
 353         }
 354         $searchtext = quotemeta $searchtext;
 355 }
 356
 357 our $searchtype = $cgi->param('st');
 358 if (defined $searchtype) {
 359         if ($searchtype =~ m/[^a-z]/) {
 360                 die_error(undef, "Invalid searchtype parameter");
 361         }
 362 }
 363
 364 # now read PATH_INFO and use it as alternative to parameters
 365 sub evaluate_path_info {
 366         return if defined $project;
 367         my $path_info = $ENV{"PATH_INFO"};
 368         return if !$path_info;
 369         $path_info =~ s,^/+,,;
 370         return if !$path_info;
 371         # find which part of PATH_INFO is project
 372         $project = $path_info;
 373         $project =~ s,/+$,,;
 374         while ($project && !check_head_link("$projectroot/$project")) {
 375                 $project =~ s,/*[^/]*$,,;
 376         }
 377         # validate project
 378         $project = validate_pathname($project);
 379         if (!$project ||
 380             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 381             ($strict_export && !project_in_list($project))) {
 382                 undef $project;
 383                 return;
 384         }
 385         # do not change any parameters if an action is given using the query string
 386         return if $action;
 387         $path_info =~ s,^$project/*,,;
 388         my ($refname, $pathname) = split(/:/, $path_info, 2);
 389         if (defined $pathname) {
 390                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 391                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 392                 $pathname =~ s,^/+,,;
 393                 if (!$pathname || substr($pathname, -1) eq "/") {
 394                         $action  ||= "tree";
 395                         $pathname =~ s,/$,,;
 396                 } else {
 397                         $action  ||= "blob_plain";
 398                 }
 399                 $hash_base ||= validate_refname($refname);
 400                 $file_name ||= validate_pathname($pathname);
 401         } elsif (defined $refname) {
 402                 # we got "project.git/branch"
 403                 $action ||= "shortlog";
 404                 $hash   ||= validate_refname($refname);
 405         }
 406 }
 407 evaluate_path_info();
 408
 409 # path to the current git repository
 410 our $git_dir;
 411 $git_dir = "$projectroot/$project" if $project;
 412
 413 # dispatch
 414 my %actions = (
 415         "blame" => \&git_blame2,
 416         "blobdiff" => \&git_blobdiff,
 417         "blobdiff_plain" => \&git_blobdiff_plain,
 418         "blob" => \&git_blob,
 419         "blob_plain" => \&git_blob_plain,
 420         "commitdiff" => \&git_commitdiff,
 421         "commitdiff_plain" => \&git_commitdiff_plain,
 422         "commit" => \&git_commit,
 423         "forks" => \&git_forks,
 424         "heads" => \&git_heads,
 425         "history" => \&git_history,
 426         "log" => \&git_log,
 427         "rss" => \&git_rss,
 428         "search" => \&git_search,
 429         "search_help" => \&git_search_help,
 430         "shortlog" => \&git_shortlog,
 431         "summary" => \&git_summary,
 432         "tag" => \&git_tag,
 433         "tags" => \&git_tags,
 434         "tree" => \&git_tree,
 435         "snapshot" => \&git_snapshot,
 436         # those below don't need $project
 437         "opml" => \&git_opml,
 438         "project_list" => \&git_project_list,
 439         "project_index" => \&git_project_index,
 440 );
 441
 442 if (defined $project) {
 443         $action ||= 'summary';
 444 } else {
 445         $action ||= 'project_list';
 446 }
 447 if (!defined($actions{$action})) {
 448         die_error(undef, "Unknown action");
 449 }
 450 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 451     !$project) {
 452         die_error(undef, "Project needed");
 453 }
 454 $actions{$action}->();
 455 exit;
 456
 457 ## ======================================================================
 458 ## action links
 459
 460 sub href(%) {
 461         my %params = @_;
 462         my $href = $my_uri;
 463
 464         # XXX: Warning: If you touch this, check the search form for updating,
 465         # too.
 466
 467         my @mapping = (
 468                 project => "p",
 469                 action => "a",
 470                 file_name => "f",
 471                 file_parent => "fp",
 472                 hash => "h",
 473                 hash_parent => "hp",
 474                 hash_base => "hb",
 475                 hash_parent_base => "hpb",
 476                 page => "pg",
 477                 order => "o",
 478                 searchtext => "s",
 479                 searchtype => "st",
 480         );
 481         my %mapping = @mapping;
 482
 483         $params{'project'} = $project unless exists $params{'project'};
 484
 485         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 486         if ($use_pathinfo) {
 487                 # use PATH_INFO for project name
 488                 $href .= "/$params{'project'}" if defined $params{'project'};
 489                 delete $params{'project'};
 490
 491                 # Summary just uses the project path URL
 492                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 493                         delete $params{'action'};
 494                 }
 495         }
 496
 497         # now encode the parameters explicitly
 498         my @result = ();
 499         for (my $i = 0; $i < @mapping; $i += 2) {
 500                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 501                 if (defined $params{$name}) {
 502                         push @result, $symbol . "=" . esc_param($params{$name});
 503                 }
 504         }
 505         $href .= "?" . join(';', @result) if scalar @result;
 506
 507         return $href;
 508 }
 509
 510
 511 ## ======================================================================
 512 ## validation, quoting/unquoting and escaping
 513
 514 sub validate_pathname {
 515         my $input = shift || return undef;
 516
 517         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 518         # at the beginning, at the end, and between slashes.
 519         # also this catches doubled slashes
 520         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 521                 return undef;
 522         }
 523         # no null characters
 524         if ($input =~ m!\0!) {
 525                 return undef;
 526         }
 527         return $input;
 528 }
 529
 530 sub validate_refname {
 531         my $input = shift || return undef;
 532
 533         # textual hashes are O.K.
 534         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 535                 return $input;
 536         }
 537         # it must be correct pathname
 538         $input = validate_pathname($input)
 539                 or return undef;
 540         # restrictions on ref name according to git-check-ref-format
 541         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 542                 return undef;
 543         }
 544         return $input;
 545 }
 546
 547 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 548 sub to_utf8 {
 549         my $str = shift;
 550         return decode("utf8", $str, Encode::FB_DEFAULT);
 551 }
 552
 553 # quote unsafe chars, but keep the slash, even when it's not
 554 # correct, but quoted slashes look too horrible in bookmarks
 555 sub esc_param {
 556         my $str = shift;
 557         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 558         $str =~ s/\+/%2B/g;
 559         $str =~ s/ /\+/g;
 560         return $str;
 561 }
 562
 563 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 564 sub esc_url {
 565         my $str = shift;
 566         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 567         $str =~ s/\+/%2B/g;
 568         $str =~ s/ /\+/g;
 569         return $str;
 570 }
 571
 572 # replace invalid utf8 character with SUBSTITUTION sequence
 573 sub esc_html ($;%) {
 574         my $str = shift;
 575         my %opts = @_;
 576
 577         $str = to_utf8($str);
 578         $str = escapeHTML($str);
 579         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 580         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 581         if ($opts{'-nbsp'}) {
 582                 $str =~ s/ /&nbsp;/g;
 583         }
 584         return $str;
 585 }
 586
 587 # quote control characters and escape filename to HTML
 588 sub esc_path {
 589         my $str = shift;
 590         $str = esc_html($str);
 591         $str =~ s|([[:cntrl:]])|<span class="cntrl">?</span>|g;
 592         return $str;
 593 }
 594
 595 # git may return quoted and escaped filenames
 596 sub unquote {
 597         my $str = shift;
 598
 599         sub unq {
 600                 my $seq = shift;
 601                 my %es = ( # character escape codes, aka escape sequences
 602                         't' => "\t",   # tab            (HT, TAB)
 603                         'n' => "\n",   # newline        (NL)
 604                         'r' => "\r",   # return         (CR)
 605                         'f' => "\f",   # form feed      (FF)
 606                         'b' => "\b",   # backspace      (BS)
 607                         'a' => "\a",   # alarm (bell)   (BEL)
 608                         'e' => "\e",   # escape         (ESC)
 609                         'v' => "\013", # vertical tab   (VT)
 610                 );
 611
 612                 if ($seq =~ m/^[0-7]{1,3}$/) {
 613                         # octal char sequence
 614                         return chr(oct($seq));
 615                 } elsif (exists $es{$seq}) {
 616                         # C escape sequence, aka character escape code
 617                         return $es{$seq}
 618                 }
 619                 # quoted ordinary character
 620                 return $seq;
 621         }
 622
 623         if ($str =~ m/^"(.*)"$/) {
 624                 # needs unquoting
 625                 $str = $1;
 626                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 627         }
 628         return $str;
 629 }
 630
 631 # escape tabs (convert tabs to spaces)
 632 sub untabify {
 633         my $line = shift;
 634
 635         while ((my $pos = index($line, "\t")) != -1) {
 636                 if (my $count = (8 - ($pos % 8))) {
 637                         my $spaces = ' ' x $count;
 638                         $line =~ s/\t/$spaces/;
 639                 }
 640         }
 641
 642         return $line;
 643 }
 644
 645 sub project_in_list {
 646         my $project = shift;
 647         my @list = git_get_projects_list();
 648         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 649 }
 650
 651 ## ----------------------------------------------------------------------
 652 ## HTML aware string manipulation
 653
 654 sub chop_str {
 655         my $str = shift;
 656         my $len = shift;
 657         my $add_len = shift || 10;
 658
 659         # allow only $len chars, but don't cut a word if it would fit in $add_len
 660         # if it doesn't fit, cut it if it's still longer than the dots we would add
 661         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 662         my $body = $1;
 663         my $tail = $2;
 664         if (length($tail) > 4) {
 665                 $tail = " ...";
 666                 $body =~ s/&[^;]*$//; # remove chopped character entities
 667         }
 668         return "$body$tail";
 669 }
 670
 671 ## ----------------------------------------------------------------------
 672 ## functions returning short strings
 673
 674 # CSS class for given age value (in seconds)
 675 sub age_class {
 676         my $age = shift;
 677
 678         if ($age < 60*60*2) {
 679                 return "age0";
 680         } elsif ($age < 60*60*24*2) {
 681                 return "age1";
 682         } else {
 683                 return "age2";
 684         }
 685 }
 686
 687 # convert age in seconds to "nn units ago" string
 688 sub age_string {
 689         my $age = shift;
 690         my $age_str;
 691
 692         if ($age > 60*60*24*365*2) {
 693                 $age_str = (int $age/60/60/24/365);
 694                 $age_str .= " years ago";
 695         } elsif ($age > 60*60*24*(365/12)*2) {
 696                 $age_str = int $age/60/60/24/(365/12);
 697                 $age_str .= " months ago";
 698         } elsif ($age > 60*60*24*7*2) {
 699                 $age_str = int $age/60/60/24/7;
 700                 $age_str .= " weeks ago";
 701         } elsif ($age > 60*60*24*2) {
 702                 $age_str = int $age/60/60/24;
 703                 $age_str .= " days ago";
 704         } elsif ($age > 60*60*2) {
 705                 $age_str = int $age/60/60;
 706                 $age_str .= " hours ago";
 707         } elsif ($age > 60*2) {
 708                 $age_str = int $age/60;
 709                 $age_str .= " min ago";
 710         } elsif ($age > 2) {
 711                 $age_str = int $age;
 712                 $age_str .= " sec ago";
 713         } else {
 714                 $age_str .= " right now";
 715         }
 716         return $age_str;
 717 }
 718
 719 # convert file mode in octal to symbolic file mode string
 720 sub mode_str {
 721         my $mode = oct shift;
 722
 723         if (S_ISDIR($mode & S_IFMT)) {
 724                 return 'drwxr-xr-x';
 725         } elsif (S_ISLNK($mode)) {
 726                 return 'lrwxrwxrwx';
 727         } elsif (S_ISREG($mode)) {
 728                 # git cares only about the executable bit
 729                 if ($mode & S_IXUSR) {
 730                         return '-rwxr-xr-x';
 731                 } else {
 732                         return '-rw-r--r--';
 733                 };
 734         } else {
 735                 return '----------';
 736         }
 737 }
 738
 739 # convert file mode in octal to file type string
 740 sub file_type {
 741         my $mode = shift;
 742
 743         if ($mode !~ m/^[0-7]+$/) {
 744                 return $mode;
 745         } else {
 746                 $mode = oct $mode;
 747         }
 748
 749         if (S_ISDIR($mode & S_IFMT)) {
 750                 return "directory";
 751         } elsif (S_ISLNK($mode)) {
 752                 return "symlink";
 753         } elsif (S_ISREG($mode)) {
 754                 return "file";
 755         } else {
 756                 return "unknown";
 757         }
 758 }
 759
 760 ## ----------------------------------------------------------------------
 761 ## functions returning short HTML fragments, or transforming HTML fragments
 762 ## which don't beling to other sections
 763
 764 # format line of commit message or tag comment
 765 sub format_log_line_html {
 766         my $line = shift;
 767
 768         $line = esc_html($line);
 769         $line =~ s/ /&nbsp;/g;
 770         if ($line =~ m/([0-9a-fA-F]{40})/) {
 771                 my $hash_text = $1;
 772                 if (git_get_type($hash_text) eq "commit") {
 773                         my $link =
 774                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 775                                         -class => "text"}, $hash_text);
 776                         $line =~ s/$hash_text/$link/;
 777                 }
 778         }
 779         return $line;
 780 }
 781
 782 # format marker of refs pointing to given object
 783 sub format_ref_marker {
 784         my ($refs, $id) = @_;
 785         my $markers = '';
 786
 787         if (defined $refs->{$id}) {
 788                 foreach my $ref (@{$refs->{$id}}) {
 789                         my ($type, $name) = qw();
 790                         # e.g. tags/v2.6.11 or heads/next
 791                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 792                                 $type = $1;
 793                                 $name = $2;
 794                         } else {
 795                                 $type = "ref";
 796                                 $name = $ref;
 797                         }
 798
 799                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 800                 }
 801         }
 802
 803         if ($markers) {
 804                 return ' <span class="refs">'. $markers . '</span>';
 805         } else {
 806                 return "";
 807         }
 808 }
 809
 810 # format, perhaps shortened and with markers, title line
 811 sub format_subject_html {
 812         my ($long, $short, $href, $extra) = @_;
 813         $extra = '' unless defined($extra);
 814
 815         if (length($short) < length($long)) {
 816                 return $cgi->a({-href => $href, -class => "list subject",
 817                                 -title => to_utf8($long)},
 818                        esc_html($short) . $extra);
 819         } else {
 820                 return $cgi->a({-href => $href, -class => "list subject"},
 821                        esc_html($long)  . $extra);
 822         }
 823 }
 824
 825 sub format_diff_line {
 826         my $line = shift;
 827         my $char = substr($line, 0, 1);
 828         my $diff_class = "";
 829
 830         chomp $line;
 831
 832         if ($char eq '+') {
 833                 $diff_class = " add";
 834         } elsif ($char eq "-") {
 835                 $diff_class = " rem";
 836         } elsif ($char eq "@") {
 837                 $diff_class = " chunk_header";
 838         } elsif ($char eq "\\") {
 839                 $diff_class = " incomplete";
 840         }
 841         $line = untabify($line);
 842         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 843 }
 844
 845 ## ----------------------------------------------------------------------
 846 ## git utility subroutines, invoking git commands
 847
 848 # returns path to the core git executable and the --git-dir parameter as list
 849 sub git_cmd {
 850         return $GIT, '--git-dir='.$git_dir;
 851 }
 852
 853 # returns path to the core git executable and the --git-dir parameter as string
 854 sub git_cmd_str {
 855         return join(' ', git_cmd());
 856 }
 857
 858 # get HEAD ref of given project as hash
 859 sub git_get_head_hash {
 860         my $project = shift;
 861         my $o_git_dir = $git_dir;
 862         my $retval = undef;
 863         $git_dir = "$projectroot/$project";
 864         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 865                 my $head = <$fd>;
 866                 close $fd;
 867                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 868                         $retval = $1;
 869                 }
 870         }
 871         if (defined $o_git_dir) {
 872                 $git_dir = $o_git_dir;
 873         }
 874         return $retval;
 875 }
 876
 877 # get type of given object
 878 sub git_get_type {
 879         my $hash = shift;
 880
 881         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 882         my $type = <$fd>;
 883         close $fd or return;
 884         chomp $type;
 885         return $type;
 886 }
 887
 888 sub git_get_project_config {
 889         my ($key, $type) = @_;
 890
 891         return unless ($key);
 892         $key =~ s/^gitweb\.//;
 893         return if ($key =~ m/\W/);
 894
 895         my @x = (git_cmd(), 'repo-config');
 896         if (defined $type) { push @x, $type; }
 897         push @x, "--get";
 898         push @x, "gitweb.$key";
 899         my $val = qx(@x);
 900         chomp $val;
 901         return ($val);
 902 }
 903
 904 # get hash of given path at given ref
 905 sub git_get_hash_by_path {
 906         my $base = shift;
 907         my $path = shift || return undef;
 908         my $type = shift;
 909
 910         $path =~ s,/+$,,;
 911
 912         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 913                 or die_error(undef, "Open git-ls-tree failed");
 914         my $line = <$fd>;
 915         close $fd or return undef;
 916
 917         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 918         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
 919         if (defined $type && $type ne $2) {
 920                 # type doesn't match
 921                 return undef;
 922         }
 923         return $3;
 924 }
 925
 926 ## ......................................................................
 927 ## git utility functions, directly accessing git repository
 928
 929 sub git_get_project_description {
 930         my $path = shift;
 931
 932         open my $fd, "$projectroot/$path/description" or return undef;
 933         my $descr = <$fd>;
 934         close $fd;
 935         chomp $descr;
 936         return $descr;
 937 }
 938
 939 sub git_get_project_url_list {
 940         my $path = shift;
 941
 942         open my $fd, "$projectroot/$path/cloneurl" or return;
 943         my @git_project_url_list = map { chomp; $_ } <$fd>;
 944         close $fd;
 945
 946         return wantarray ? @git_project_url_list : \@git_project_url_list;
 947 }
 948
 949 sub git_get_projects_list {
 950         my ($filter) = @_;
 951         my @list;
 952
 953         $filter ||= '';
 954         $filter =~ s/\.git$//;
 955
 956         if (-d $projects_list) {
 957                 # search in directory
 958                 my $dir = $projects_list . ($filter ? "/$filter" : '');
 959                 # remove the trailing "/"
 960                 $dir =~ s!/+$!!;
 961                 my $pfxlen = length("$dir");
 962
 963                 my ($check_forks) = gitweb_check_feature('forks');
 964
 965                 File::Find::find({
 966                         follow_fast => 1, # follow symbolic links
 967                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 968                         wanted => sub {
 969                                 # skip project-list toplevel, if we get it.
 970                                 return if (m!^[/.]$!);
 971                                 # only directories can be git repositories
 972                                 return unless (-d $_);
 973
 974                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 975                                 # we check related file in $projectroot
 976                                 if ($check_forks and $subdir =~ m#/.#) {
 977                                         $File::Find::prune = 1;
 978                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
 979                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
 980                                         $File::Find::prune = 1;
 981                                 }
 982                         },
 983                 }, "$dir");
 984
 985         } elsif (-f $projects_list) {
 986                 # read from file(url-encoded):
 987                 # 'git%2Fgit.git Linus+Torvalds'
 988                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 989                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 990                 open my ($fd), $projects_list or return;
 991                 while (my $line = <$fd>) {
 992                         chomp $line;
 993                         my ($path, $owner) = split ' ', $line;
 994                         $path = unescape($path);
 995                         $owner = unescape($owner);
 996                         if (!defined $path) {
 997                                 next;
 998                         }
 999                         if ($filter ne '') {
1000                                 # looking for forks;
1001                                 my $pfx = substr($path, 0, length($filter));
1002                                 if ($pfx ne $filter) {
1003                                         next;
1004                                 }
1005                                 my $sfx = substr($path, length($filter));
1006                                 if ($sfx !~ /^\/.*\.git$/) {
1007                                         next;
1008                                 }
1009                         }
1010                         if (check_export_ok("$projectroot/$path")) {
1011                                 my $pr = {
1012                                         path => $path,
1013                                         owner => to_utf8($owner),
1014                                 };
1015                                 push @list, $pr
1016                         }
1017                 }
1018                 close $fd;
1019         }
1020         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1021         return @list;
1022 }
1023
1024 sub git_get_project_owner {
1025         my $project = shift;
1026         my $owner;
1027
1028         return undef unless $project;
1029
1030         # read from file (url-encoded):
1031         # 'git%2Fgit.git Linus+Torvalds'
1032         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1033         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1034         if (-f $projects_list) {
1035                 open (my $fd , $projects_list);
1036                 while (my $line = <$fd>) {
1037                         chomp $line;
1038                         my ($pr, $ow) = split ' ', $line;
1039                         $pr = unescape($pr);
1040                         $ow = unescape($ow);
1041                         if ($pr eq $project) {
1042                                 $owner = to_utf8($ow);
1043                                 last;
1044                         }
1045                 }
1046                 close $fd;
1047         }
1048         if (!defined $owner) {
1049                 $owner = get_file_owner("$projectroot/$project");
1050         }
1051
1052         return $owner;
1053 }
1054
1055 sub git_get_last_activity {
1056         my ($path) = @_;
1057         my $fd;
1058
1059         $git_dir = "$projectroot/$path";
1060         open($fd, "-|", git_cmd(), 'for-each-ref',
1061              '--format=%(refname) %(committer)',
1062              '--sort=-committerdate',
1063              'refs/heads') or return;
1064         my $most_recent = <$fd>;
1065         close $fd or return;
1066         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1067                 my $timestamp = $1;
1068                 my $age = time - $timestamp;
1069                 return ($age, age_string($age));
1070         }
1071 }
1072
1073 sub git_get_references {
1074         my $type = shift || "";
1075         my %refs;
1076         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
1077         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
1078         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1079                 or return;
1080
1081         while (my $line = <$fd>) {
1082                 chomp $line;
1083                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
1084                         if (defined $refs{$1}) {
1085                                 push @{$refs{$1}}, $2;
1086                         } else {
1087                                 $refs{$1} = [ $2 ];
1088                         }
1089                 }
1090         }
1091         close $fd or return;
1092         return \%refs;
1093 }
1094
1095 sub git_get_rev_name_tags {
1096         my $hash = shift || return undef;
1097
1098         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1099                 or return;
1100         my $name_rev = <$fd>;
1101         close $fd;
1102
1103         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1104                 return $1;
1105         } else {
1106                 # catches also '$hash undefined' output
1107                 return undef;
1108         }
1109 }
1110
1111 ## ----------------------------------------------------------------------
1112 ## parse to hash functions
1113
1114 sub parse_date {
1115         my $epoch = shift;
1116         my $tz = shift || "-0000";
1117
1118         my %date;
1119         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1120         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1121         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1122         $date{'hour'} = $hour;
1123         $date{'minute'} = $min;
1124         $date{'mday'} = $mday;
1125         $date{'day'} = $days[$wday];
1126         $date{'month'} = $months[$mon];
1127         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1128                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1129         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1130                              $mday, $months[$mon], $hour ,$min;
1131
1132         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1133         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1134         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1135         $date{'hour_local'} = $hour;
1136         $date{'minute_local'} = $min;
1137         $date{'tz_local'} = $tz;
1138         $date{'iso-tz'} = sprintf ("%04d-%02d-%02d %02d:%02d:%02d %s",
1139                                    1900+$year, $mon+1, $mday,
1140                                    $hour, $min, $sec, $tz);
1141         return %date;
1142 }
1143
1144 sub parse_tag {
1145         my $tag_id = shift;
1146         my %tag;
1147         my @comment;
1148
1149         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1150         $tag{'id'} = $tag_id;
1151         while (my $line = <$fd>) {
1152                 chomp $line;
1153                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1154                         $tag{'object'} = $1;
1155                 } elsif ($line =~ m/^type (.+)$/) {
1156                         $tag{'type'} = $1;
1157                 } elsif ($line =~ m/^tag (.+)$/) {
1158                         $tag{'name'} = $1;
1159                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1160                         $tag{'author'} = $1;
1161                         $tag{'epoch'} = $2;
1162                         $tag{'tz'} = $3;
1163                 } elsif ($line =~ m/--BEGIN/) {
1164                         push @comment, $line;
1165                         last;
1166                 } elsif ($line eq "") {
1167                         last;
1168                 }
1169         }
1170         push @comment, <$fd>;
1171         $tag{'comment'} = \@comment;
1172         close $fd or return;
1173         if (!defined $tag{'name'}) {
1174                 return
1175         };
1176         return %tag
1177 }
1178
1179 sub parse_commit {
1180         my $commit_id = shift;
1181         my $commit_text = shift;
1182
1183         my @commit_lines;
1184         my %co;
1185
1186         if (defined $commit_text) {
1187                 @commit_lines = @$commit_text;
1188         } else {
1189                 local $/ = "\0";
1190                 open my $fd, "-|", git_cmd(), "rev-list",
1191                         "--header", "--parents", "--max-count=1",
1192                         $commit_id, "--"
1193                         or return;
1194                 @commit_lines = split '\n', <$fd>;
1195                 close $fd or return;
1196                 pop @commit_lines;
1197         }
1198         my $header = shift @commit_lines;
1199         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1200                 return;
1201         }
1202         ($co{'id'}, my @parents) = split ' ', $header;
1203         $co{'parents'} = \@parents;
1204         $co{'parent'} = $parents[0];
1205         while (my $line = shift @commit_lines) {
1206                 last if $line eq "\n";
1207                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1208                         $co{'tree'} = $1;
1209                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1210                         $co{'author'} = $1;
1211                         $co{'author_epoch'} = $2;
1212                         $co{'author_tz'} = $3;
1213                         if ($co{'author'} =~ m/^([^<]+) </) {
1214                                 $co{'author_name'} = $1;
1215                         } else {
1216                                 $co{'author_name'} = $co{'author'};
1217                         }
1218                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1219                         $co{'committer'} = $1;
1220                         $co{'committer_epoch'} = $2;
1221                         $co{'committer_tz'} = $3;
1222                         $co{'committer_name'} = $co{'committer'};
1223                         $co{'committer_name'} =~ s/ <.*//;
1224                 }
1225         }
1226         if (!defined $co{'tree'}) {
1227                 return;
1228         };
1229
1230         foreach my $title (@commit_lines) {
1231                 $title =~ s/^    //;
1232                 if ($title ne "") {
1233                         $co{'title'} = chop_str($title, 80, 5);
1234                         # remove leading stuff of merges to make the interesting part visible
1235                         if (length($title) > 50) {
1236                                 $title =~ s/^Automatic //;
1237                                 $title =~ s/^merge (of|with) /Merge ... /i;
1238                                 if (length($title) > 50) {
1239                                         $title =~ s/(http|rsync):\/\///;
1240                                 }
1241                                 if (length($title) > 50) {
1242                                         $title =~ s/(master|www|rsync)\.//;
1243                                 }
1244                                 if (length($title) > 50) {
1245                                         $title =~ s/kernel.org:?//;
1246                                 }
1247                                 if (length($title) > 50) {
1248                                         $title =~ s/\/pub\/scm//;
1249                                 }
1250                         }
1251                         $co{'title_short'} = chop_str($title, 50, 5);
1252                         last;
1253                 }
1254         }
1255         if ($co{'title'} eq "") {
1256                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1257         }
1258         # remove added spaces
1259         foreach my $line (@commit_lines) {
1260                 $line =~ s/^    //;
1261         }
1262         $co{'comment'} = \@commit_lines;
1263
1264         my $age = time - $co{'committer_epoch'};
1265         $co{'age'} = $age;
1266         $co{'age_string'} = age_string($age);
1267         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1268         if ($age > 60*60*24*7*2) {
1269                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1270                 $co{'age_string_age'} = $co{'age_string'};
1271         } else {
1272                 $co{'age_string_date'} = $co{'age_string'};
1273                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1274         }
1275         return %co;
1276 }
1277
1278 # parse ref from ref_file, given by ref_id, with given type
1279 sub parse_ref {
1280         my $ref_file = shift;
1281         my $ref_id = shift;
1282         my $type = shift || git_get_type($ref_id);
1283         my %ref_item;
1284
1285         $ref_item{'type'} = $type;
1286         $ref_item{'id'} = $ref_id;
1287         $ref_item{'epoch'} = 0;
1288         $ref_item{'age'} = "unknown";
1289         if ($type eq "tag") {
1290                 my %tag = parse_tag($ref_id);
1291                 $ref_item{'comment'} = $tag{'comment'};
1292                 if ($tag{'type'} eq "commit") {
1293                         my %co = parse_commit($tag{'object'});
1294                         $ref_item{'epoch'} = $co{'committer_epoch'};
1295                         $ref_item{'age'} = $co{'age_string'};
1296                 } elsif (defined($tag{'epoch'})) {
1297                         my $age = time - $tag{'epoch'};
1298                         $ref_item{'epoch'} = $tag{'epoch'};
1299                         $ref_item{'age'} = age_string($age);
1300                 }
1301                 $ref_item{'reftype'} = $tag{'type'};
1302                 $ref_item{'name'} = $tag{'name'};
1303                 $ref_item{'refid'} = $tag{'object'};
1304         } elsif ($type eq "commit"){
1305                 my %co = parse_commit($ref_id);
1306                 $ref_item{'reftype'} = "commit";
1307                 $ref_item{'name'} = $ref_file;
1308                 $ref_item{'title'} = $co{'title'};
1309                 $ref_item{'refid'} = $ref_id;
1310                 $ref_item{'epoch'} = $co{'committer_epoch'};
1311                 $ref_item{'age'} = $co{'age_string'};
1312         } else {
1313                 $ref_item{'reftype'} = $type;
1314                 $ref_item{'name'} = $ref_file;
1315                 $ref_item{'refid'} = $ref_id;
1316         }
1317
1318         return %ref_item;
1319 }
1320
1321 # parse line of git-diff-tree "raw" output
1322 sub parse_difftree_raw_line {
1323         my $line = shift;
1324         my %res;
1325
1326         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1327         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1328         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1329                 $res{'from_mode'} = $1;
1330                 $res{'to_mode'} = $2;
1331                 $res{'from_id'} = $3;
1332                 $res{'to_id'} = $4;
1333                 $res{'status'} = $5;
1334                 $res{'similarity'} = $6;
1335                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1336                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1337                 } else {
1338                         $res{'file'} = unquote($7);
1339                 }
1340         }
1341         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1342         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1343                 $res{'commit'} = $1;
1344         }
1345
1346         return wantarray ? %res : \%res;
1347 }
1348
1349 # parse line of git-ls-tree output
1350 sub parse_ls_tree_line ($;%) {
1351         my $line = shift;
1352         my %opts = @_;
1353         my %res;
1354
1355         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1356         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1357
1358         $res{'mode'} = $1;
1359         $res{'type'} = $2;
1360         $res{'hash'} = $3;
1361         if ($opts{'-z'}) {
1362                 $res{'name'} = $4;
1363         } else {
1364                 $res{'name'} = unquote($4);
1365         }
1366
1367         return wantarray ? %res : \%res;
1368 }
1369
1370 ## ......................................................................
1371 ## parse to array of hashes functions
1372
1373 sub git_get_heads_list {
1374         my $limit = shift;
1375         my @headslist;
1376
1377         open my $fd, '-|', git_cmd(), 'for-each-ref',
1378                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1379                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1380                 'refs/heads'
1381                 or return;
1382         while (my $line = <$fd>) {
1383                 my %ref_item;
1384
1385                 chomp $line;
1386                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1387                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1388                 my ($committer, $epoch, $tz) =
1389                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1390                 $name =~ s!^refs/heads/!!;
1391
1392                 $ref_item{'name'}  = $name;
1393                 $ref_item{'id'}    = $hash;
1394                 $ref_item{'title'} = $title || '(no commit message)';
1395                 $ref_item{'epoch'} = $epoch;
1396                 if ($epoch) {
1397                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1398                 } else {
1399                         $ref_item{'age'} = "unknown";
1400                 }
1401
1402                 push @headslist, \%ref_item;
1403         }
1404         close $fd;
1405
1406         return wantarray ? @headslist : \@headslist;
1407 }
1408
1409 sub git_get_tags_list {
1410         my $limit = shift;
1411         my @tagslist;
1412
1413         open my $fd, '-|', git_cmd(), 'for-each-ref',
1414                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1415                 '--format=%(objectname) %(objecttype) %(refname) '.
1416                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1417                 'refs/tags'
1418                 or return;
1419         while (my $line = <$fd>) {
1420                 my %ref_item;
1421
1422                 chomp $line;
1423                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1424                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1425                 my ($creator, $epoch, $tz) =
1426                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1427                 $name =~ s!^refs/tags/!!;
1428
1429                 $ref_item{'type'} = $type;
1430                 $ref_item{'id'} = $id;
1431                 $ref_item{'name'} = $name;
1432                 if ($type eq "tag") {
1433                         $ref_item{'subject'} = $title;
1434                         $ref_item{'reftype'} = $reftype;
1435                         $ref_item{'refid'}   = $refid;
1436                 } else {
1437                         $ref_item{'reftype'} = $type;
1438                         $ref_item{'refid'}   = $id;
1439                 }
1440
1441                 if ($type eq "tag" || $type eq "commit") {
1442                         $ref_item{'epoch'} = $epoch;
1443                         if ($epoch) {
1444                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1445                         } else {
1446                                 $ref_item{'age'} = "unknown";
1447                         }
1448                 }
1449
1450                 push @tagslist, \%ref_item;
1451         }
1452         close $fd;
1453
1454         return wantarray ? @tagslist : \@tagslist;
1455 }
1456
1457 ## ----------------------------------------------------------------------
1458 ## filesystem-related functions
1459
1460 sub get_file_owner {
1461         my $path = shift;
1462
1463         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1464         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1465         if (!defined $gcos) {
1466                 return undef;
1467         }
1468         my $owner = $gcos;
1469         $owner =~ s/[,;].*$//;
1470         return to_utf8($owner);
1471 }
1472
1473 ## ......................................................................
1474 ## mimetype related functions
1475
1476 sub mimetype_guess_file {
1477         my $filename = shift;
1478         my $mimemap = shift;
1479         -r $mimemap or return undef;
1480
1481         my %mimemap;
1482         open(MIME, $mimemap) or return undef;
1483         while (<MIME>) {
1484                 next if m/^#/; # skip comments
1485                 my ($mime, $exts) = split(/\t+/);
1486                 if (defined $exts) {
1487                         my @exts = split(/\s+/, $exts);
1488                         foreach my $ext (@exts) {
1489                                 $mimemap{$ext} = $mime;
1490                         }
1491                 }
1492         }
1493         close(MIME);
1494
1495         $filename =~ /\.([^.]*)$/;
1496         return $mimemap{$1};
1497 }
1498
1499 sub mimetype_guess {
1500         my $filename = shift;
1501         my $mime;
1502         $filename =~ /\./ or return undef;
1503
1504         if ($mimetypes_file) {
1505                 my $file = $mimetypes_file;
1506                 if ($file !~ m!^/!) { # if it is relative path
1507                         # it is relative to project
1508                         $file = "$projectroot/$project/$file";
1509                 }
1510                 $mime = mimetype_guess_file($filename, $file);
1511         }
1512         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1513         return $mime;
1514 }
1515
1516 sub blob_mimetype {
1517         my $fd = shift;
1518         my $filename = shift;
1519
1520         if ($filename) {
1521                 my $mime = mimetype_guess($filename);
1522                 $mime and return $mime;
1523         }
1524
1525         # just in case
1526         return $default_blob_plain_mimetype unless $fd;
1527
1528         if (-T $fd) {
1529                 return 'text/plain' .
1530                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1531         } elsif (! $filename) {
1532                 return 'application/octet-stream';
1533         } elsif ($filename =~ m/\.png$/i) {
1534                 return 'image/png';
1535         } elsif ($filename =~ m/\.gif$/i) {
1536                 return 'image/gif';
1537         } elsif ($filename =~ m/\.jpe?g$/i) {
1538                 return 'image/jpeg';
1539         } else {
1540                 return 'application/octet-stream';
1541         }
1542 }
1543
1544 ## ======================================================================
1545 ## functions printing HTML: header, footer, error page
1546
1547 sub git_header_html {
1548         my $status = shift || "200 OK";
1549         my $expires = shift;
1550
1551         my $title = "$site_name";
1552         if (defined $project) {
1553                 $title .= " - $project";
1554                 if (defined $action) {
1555                         $title .= "/$action";
1556                         if (defined $file_name) {
1557                                 $title .= " - " . esc_path($file_name);
1558                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1559                                         $title .= "/";
1560                                 }
1561                         }
1562                 }
1563         }
1564         my $content_type;
1565         # require explicit support from the UA if we are to send the page as
1566         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1567         # we have to do this because MSIE sometimes globs '*/*', pretending to
1568         # support xhtml+xml but choking when it gets what it asked for.
1569         if (defined $cgi->http('HTTP_ACCEPT') &&
1570             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1571             $cgi->Accept('application/xhtml+xml') != 0) {
1572                 $content_type = 'application/xhtml+xml';
1573         } else {
1574                 $content_type = 'text/html';
1575         }
1576         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1577                            -status=> $status, -expires => $expires);
1578         print <<EOF;
1579 <?xml version="1.0" encoding="utf-8"?>
1580 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1581 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1582 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1583 <!-- git core binaries version $git_version -->
1584 <head>
1585 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1586 <meta name="generator" content="gitweb/$version git/$git_version"/>
1587 <meta name="robots" content="index, nofollow"/>
1588 <title>$title</title>
1589 EOF
1590 # print out each stylesheet that exist
1591         if (defined $stylesheet) {
1592 #provides backwards capability for those people who define style sheet in a config file
1593                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1594         } else {
1595                 foreach my $stylesheet (@stylesheets) {
1596                         next unless $stylesheet;
1597                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1598                 }
1599         }
1600         if (defined $project) {
1601                 printf('<link rel="alternate" title="%s log" '.
1602                        'href="%s" type="application/rss+xml"/>'."\n",
1603                        esc_param($project), href(action=>"rss"));
1604         } else {
1605                 printf('<link rel="alternate" title="%s projects list" '.
1606                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1607                        $site_name, href(project=>undef, action=>"project_index"));
1608                 printf('<link rel="alternate" title="%s projects logs" '.
1609                        'href="%s" type="text/x-opml"/>'."\n",
1610                        $site_name, href(project=>undef, action=>"opml"));
1611         }
1612         if (defined $favicon) {
1613                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1614         }
1615
1616         print "</head>\n" .
1617               "<body>\n";
1618
1619         if (-f $site_header) {
1620                 open (my $fd, $site_header);
1621                 print <$fd>;
1622                 close $fd;
1623         }
1624
1625         print "<div class=\"page_header\">\n" .
1626               $cgi->a({-href => esc_url($logo_url),
1627                        -title => $logo_label},
1628                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1629         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1630         if (defined $project) {
1631                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1632                 if (defined $action) {
1633                         print " / $action";
1634                 }
1635                 print "\n";
1636                 if (!defined $searchtext) {
1637                         $searchtext = "";
1638                 }
1639                 my $search_hash;
1640                 if (defined $hash_base) {
1641                         $search_hash = $hash_base;
1642                 } elsif (defined $hash) {
1643                         $search_hash = $hash;
1644                 } else {
1645                         $search_hash = "HEAD";
1646                 }
1647                 $cgi->param("a", "search");
1648                 $cgi->param("h", $search_hash);
1649                 $cgi->param("p", $project);
1650                 print $cgi->startform(-method => "get", -action => $my_uri) .
1651                       "<div class=\"search\">\n" .
1652                       $cgi->hidden(-name => "p") . "\n" .
1653                       $cgi->hidden(-name => "a") . "\n" .
1654                       $cgi->hidden(-name => "h") . "\n" .
1655                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1656                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1657                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1658                       " search:\n",
1659                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1660                       "</div>" .
1661                       $cgi->end_form() . "\n";
1662         }
1663         print "</div>\n";
1664 }
1665
1666 sub git_footer_html {
1667         print "<div class=\"page_footer\">\n";
1668         if (defined $project) {
1669                 my $descr = git_get_project_description($project);
1670                 if (defined $descr) {
1671                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1672                 }
1673                 print $cgi->a({-href => href(action=>"rss"),
1674                               -class => "rss_logo"}, "RSS") . "\n";
1675         } else {
1676                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1677                               -class => "rss_logo"}, "OPML") . " ";
1678                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1679                               -class => "rss_logo"}, "TXT") . "\n";
1680         }
1681         print "</div>\n" ;
1682
1683         if (-f $site_footer) {
1684                 open (my $fd, $site_footer);
1685                 print <$fd>;
1686                 close $fd;
1687         }
1688
1689         print "</body>\n" .
1690               "</html>";
1691 }
1692
1693 sub die_error {
1694         my $status = shift || "403 Forbidden";
1695         my $error = shift || "Malformed query, file missing or permission denied";
1696
1697         git_header_html($status);
1698         print <<EOF;
1699 <div class="page_body">
1700 <br /><br />
1701 $status - $error
1702 <br />
1703 </div>
1704 EOF
1705         git_footer_html();
1706         exit;
1707 }
1708
1709 ## ----------------------------------------------------------------------
1710 ## functions printing or outputting HTML: navigation
1711
1712 sub git_print_page_nav {
1713         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1714         $extra = '' if !defined $extra; # pager or formats
1715
1716         my @navs = qw(summary shortlog log commit commitdiff tree);
1717         if ($suppress) {
1718                 @navs = grep { $_ ne $suppress } @navs;
1719         }
1720
1721         my %arg = map { $_ => {action=>$_} } @navs;
1722         if (defined $head) {
1723                 for (qw(commit commitdiff)) {
1724                         $arg{$_}{hash} = $head;
1725                 }
1726                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1727                         for (qw(shortlog log)) {
1728                                 $arg{$_}{hash} = $head;
1729                         }
1730                 }
1731         }
1732         $arg{tree}{hash} = $treehead if defined $treehead;
1733         $arg{tree}{hash_base} = $treebase if defined $treebase;
1734
1735         print "<div class=\"page_nav\">\n" .
1736                 (join " | ",
1737                  map { $_ eq $current ?
1738                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1739                  } @navs);
1740         print "<br/>\n$extra<br/>\n" .
1741               "</div>\n";
1742 }
1743
1744 sub format_paging_nav {
1745         my ($action, $hash, $head, $page, $nrevs) = @_;
1746         my $paging_nav;
1747
1748
1749         if ($hash ne $head || $page) {
1750                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1751         } else {
1752                 $paging_nav .= "HEAD";
1753         }
1754
1755         if ($page > 0) {
1756                 $paging_nav .= " &sdot; " .
1757                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1758                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1759         } else {
1760                 $paging_nav .= " &sdot; prev";
1761         }
1762
1763         if ($nrevs >= (100 * ($page+1)-1)) {
1764                 $paging_nav .= " &sdot; " .
1765                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1766                                  -accesskey => "n", -title => "Alt-n"}, "next");
1767         } else {
1768                 $paging_nav .= " &sdot; next";
1769         }
1770
1771         return $paging_nav;
1772 }
1773
1774 ## ......................................................................
1775 ## functions printing or outputting HTML: div
1776
1777 sub git_print_header_div {
1778         my ($action, $title, $hash, $hash_base) = @_;
1779         my %args = ();
1780
1781         $args{action} = $action;
1782         $args{hash} = $hash if $hash;
1783         $args{hash_base} = $hash_base if $hash_base;
1784
1785         print "<div class=\"header\">\n" .
1786               $cgi->a({-href => href(%args), -class => "title"},
1787               $title ? $title : $action) .
1788               "\n</div>\n";
1789 }
1790
1791 #sub git_print_authorship (\%) {
1792 sub git_print_authorship {
1793         my $co = shift;
1794
1795         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1796         print "<div class=\"author_date\">" .
1797               esc_html($co->{'author_name'}) .
1798               " [$ad{'rfc2822'}";
1799         if ($ad{'hour_local'} < 6) {
1800                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1801                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1802         } else {
1803                 printf(" (%02d:%02d %s)",
1804                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1805         }
1806         print "]</div>\n";
1807 }
1808
1809 sub git_print_page_path {
1810         my $name = shift;
1811         my $type = shift;
1812         my $hb = shift;
1813
1814
1815         print "<div class=\"page_path\">";
1816         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1817                       -title => 'tree root'}, "[$project]");
1818         print " / ";
1819         if (defined $name) {
1820                 my @dirname = split '/', $name;
1821                 my $basename = pop @dirname;
1822                 my $fullname = '';
1823
1824                 foreach my $dir (@dirname) {
1825                         $fullname .= ($fullname ? '/' : '') . $dir;
1826                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1827                                                      hash_base=>$hb),
1828                                       -title => $fullname}, esc_path($dir));
1829                         print " / ";
1830                 }
1831                 if (defined $type && $type eq 'blob') {
1832                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1833                                                      hash_base=>$hb),
1834                                       -title => $name}, esc_path($basename));
1835                 } elsif (defined $type && $type eq 'tree') {
1836                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1837                                                      hash_base=>$hb),
1838                                       -title => $name}, esc_path($basename));
1839                         print " / ";
1840                 } else {
1841                         print esc_path($basename);
1842                 }
1843         }
1844         print "<br/></div>\n";
1845 }
1846
1847 # sub git_print_log (\@;%) {
1848 sub git_print_log ($;%) {
1849         my $log = shift;
1850         my %opts = @_;
1851
1852         if ($opts{'-remove_title'}) {
1853                 # remove title, i.e. first line of log
1854                 shift @$log;
1855         }
1856         # remove leading empty lines
1857         while (defined $log->[0] && $log->[0] eq "") {
1858                 shift @$log;
1859         }
1860
1861         # print log
1862         my $signoff = 0;
1863         my $empty = 0;
1864         foreach my $line (@$log) {
1865                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1866                         $signoff = 1;
1867                         $empty = 0;
1868                         if (! $opts{'-remove_signoff'}) {
1869                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1870                                 next;
1871                         } else {
1872                                 # remove signoff lines
1873                                 next;
1874                         }
1875                 } else {
1876                         $signoff = 0;
1877                 }
1878
1879                 # print only one empty line
1880                 # do not print empty line after signoff
1881                 if ($line eq "") {
1882                         next if ($empty || $signoff);
1883                         $empty = 1;
1884                 } else {
1885                         $empty = 0;
1886                 }
1887
1888                 print format_log_line_html($line) . "<br/>\n";
1889         }
1890
1891         if ($opts{'-final_empty_line'}) {
1892                 # end with single empty line
1893                 print "<br/>\n" unless $empty;
1894         }
1895 }
1896
1897 # print tree entry (row of git_tree), but without encompassing <tr> element
1898 sub git_print_tree_entry {
1899         my ($t, $basedir, $hash_base, $have_blame) = @_;
1900
1901         my %base_key = ();
1902         $base_key{hash_base} = $hash_base if defined $hash_base;
1903
1904         # The format of a table row is: mode list link.  Where mode is
1905         # the mode of the entry, list is the name of the entry, an href,
1906         # and link is the action links of the entry.
1907
1908         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1909         if ($t->{'type'} eq "blob") {
1910                 print "<td class=\"list\">" .
1911                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1912                                                file_name=>"$basedir$t->{'name'}", %base_key),
1913                                 -class => "list"}, esc_path($t->{'name'})) . "</td>\n";
1914                 print "<td class=\"link\">";
1915                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1916                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1917                               "blob");
1918                 if ($have_blame) {
1919                         print " | " .
1920                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1921                                                            file_name=>"$basedir$t->{'name'}", %base_key)},
1922                                             "blame");
1923                 }
1924                 if (defined $hash_base) {
1925                         print " | " .
1926                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1927                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1928                                       "history");
1929                 }
1930                 print " | " .
1931                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1932                                                file_name=>"$basedir$t->{'name'}")},
1933                                 "raw");
1934                 print "</td>\n";
1935
1936         } elsif ($t->{'type'} eq "tree") {
1937                 print "<td class=\"list\">";
1938                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1939                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1940                               esc_path($t->{'name'}));
1941                 print "</td>\n";
1942                 print "<td class=\"link\">";
1943                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1944                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1945                               "tree");
1946                 if (defined $hash_base) {
1947                         print " | " .
1948                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1949                                                      file_name=>"$basedir$t->{'name'}")},
1950                                       "history");
1951                 }
1952                 print "</td>\n";
1953         }
1954 }
1955
1956 ## ......................................................................
1957 ## functions printing large fragments of HTML
1958
1959 sub git_difftree_body {
1960         my ($difftree, $hash, $parent) = @_;
1961
1962         print "<div class=\"list_head\">\n";
1963         if ($#{$difftree} > 10) {
1964                 print(($#{$difftree} + 1) . " files changed:\n");
1965         }
1966         print "</div>\n";
1967
1968         print "<table class=\"diff_tree\">\n";
1969         my $alternate = 1;
1970         my $patchno = 0;
1971         foreach my $line (@{$difftree}) {
1972                 my %diff = parse_difftree_raw_line($line);
1973
1974                 if ($alternate) {
1975                         print "<tr class=\"dark\">\n";
1976                 } else {
1977                         print "<tr class=\"light\">\n";
1978                 }
1979                 $alternate ^= 1;
1980
1981                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1982                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1983                 if ($diff{'to_mode'} ne ('0' x 6)) {
1984                         $to_mode_oct = oct $diff{'to_mode'};
1985                         if (S_ISREG($to_mode_oct)) { # only for regular file
1986                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1987                         }
1988                         $to_file_type = file_type($diff{'to_mode'});
1989                 }
1990                 if ($diff{'from_mode'} ne ('0' x 6)) {
1991                         $from_mode_oct = oct $diff{'from_mode'};
1992                         if (S_ISREG($to_mode_oct)) { # only for regular file
1993                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1994                         }
1995                         $from_file_type = file_type($diff{'from_mode'});
1996                 }
1997
1998                 if ($diff{'status'} eq "A") { # created
1999                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2000                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2001                         $mode_chng   .= "]</span>";
2002                         print "<td>";
2003                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2004                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2005                                       -class => "list"}, esc_path($diff{'file'}));
2006                         print "</td>\n";
2007                         print "<td>$mode_chng</td>\n";
2008                         print "<td class=\"link\">";
2009                         if ($action eq 'commitdiff') {
2010                                 # link to patch
2011                                 $patchno++;
2012                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2013                         }
2014                         print "</td>\n";
2015
2016                 } elsif ($diff{'status'} eq "D") { # deleted
2017                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2018                         print "<td>";
2019                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2020                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2021                                        -class => "list"}, esc_path($diff{'file'}));
2022                         print "</td>\n";
2023                         print "<td>$mode_chng</td>\n";
2024                         print "<td class=\"link\">";
2025                         if ($action eq 'commitdiff') {
2026                                 # link to patch
2027                                 $patchno++;
2028                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2029                                 print " | ";
2030                         }
2031                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2032                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2033                                       "blob") . " | ";
2034                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2035                                                      file_name=>$diff{'file'})},
2036                                       "blame") . " | ";
2037                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2038                                                      file_name=>$diff{'file'})},
2039                                       "history");
2040                         print "</td>\n";
2041
2042                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2043                         my $mode_chnge = "";
2044                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2045                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2046                                 if ($from_file_type != $to_file_type) {
2047                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2048                                 }
2049                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2050                                         if ($from_mode_str && $to_mode_str) {
2051                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2052                                         } elsif ($to_mode_str) {
2053                                                 $mode_chnge .= " mode: $to_mode_str";
2054                                         }
2055                                 }
2056                                 $mode_chnge .= "]</span>\n";
2057                         }
2058                         print "<td>";
2059                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2060                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2061                                       -class => "list"}, esc_path($diff{'file'}));
2062                         print "</td>\n";
2063                         print "<td>$mode_chnge</td>\n";
2064                         print "<td class=\"link\">";
2065                         if ($action eq 'commitdiff') {
2066                                 # link to patch
2067                                 $patchno++;
2068                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2069                                       " | ";
2070                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2071                                 # "commit" view and modified file (not onlu mode changed)
2072                                 print $cgi->a({-href => href(action=>"blobdiff",
2073                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2074                                                              hash_base=>$hash, hash_parent_base=>$parent,
2075                                                              file_name=>$diff{'file'})},
2076                                               "diff") .
2077                                       " | ";
2078                         }
2079                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2080                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2081                                       "blob") . " | ";
2082                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2083                                                      file_name=>$diff{'file'})},
2084                                       "blame") . " | ";
2085                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2086                                                      file_name=>$diff{'file'})},
2087                                       "history");
2088                         print "</td>\n";
2089
2090                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2091                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2092                         my $nstatus = $status_name{$diff{'status'}};
2093                         my $mode_chng = "";
2094                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2095                                 # mode also for directories, so we cannot use $to_mode_str
2096                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2097                         }
2098                         print "<td>" .
2099                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2100                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2101                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2102                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2103                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2104                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2105                                       -class => "list"}, esc_path($diff{'from_file'})) .
2106                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2107                               "<td class=\"link\">";
2108                         if ($action eq 'commitdiff') {
2109                                 # link to patch
2110                                 $patchno++;
2111                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2112                                       " | ";
2113                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2114                                 # "commit" view and modified file (not only pure rename or copy)
2115                                 print $cgi->a({-href => href(action=>"blobdiff",
2116                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2117                                                              hash_base=>$hash, hash_parent_base=>$parent,
2118                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2119                                               "diff") .
2120                                       " | ";
2121                         }
2122                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2123                                                      hash_base=>$parent, file_name=>$diff{'from_file'})},
2124                                       "blob") . " | ";
2125                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2126                                                      file_name=>$diff{'from_file'})},
2127                                       "blame") . " | ";
2128                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2129                                                     file_name=>$diff{'from_file'})},
2130                                       "history");
2131                         print "</td>\n";
2132
2133                 } # we should not encounter Unmerged (U) or Unknown (X) status
2134                 print "</tr>\n";
2135         }
2136         print "</table>\n";
2137 }
2138
2139 sub git_patchset_body {
2140         my ($fd, $difftree, $hash, $hash_parent) = @_;
2141
2142         my $patch_idx = 0;
2143         my $in_header = 0;
2144         my $patch_found = 0;
2145         my $diffinfo;
2146
2147         print "<div class=\"patchset\">\n";
2148
2149         LINE:
2150         while (my $patch_line = <$fd>) {
2151                 chomp $patch_line;
2152
2153                 if ($patch_line =~ m/^diff /) { # "git diff" header
2154                         # beginning of patch (in patchset)
2155                         if ($patch_found) {
2156                                 # close previous patch
2157                                 print "</div>\n"; # class="patch"
2158                         } else {
2159                                 # first patch in patchset
2160                                 $patch_found = 1;
2161                         }
2162                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2163
2164                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2165                                 $diffinfo = $difftree->[$patch_idx];
2166                         } else {
2167                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2168                         }
2169                         $patch_idx++;
2170
2171                         if ($diffinfo->{'status'} eq "A") { # added
2172                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
2173                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2174                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2175                                               $diffinfo->{'to_id'}) . " (new)" .
2176                                       "</div>\n"; # class="diff_info"
2177
2178                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
2179                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
2180                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2181                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2182                                               $diffinfo->{'from_id'}) . " (deleted)" .
2183                                       "</div>\n"; # class="diff_info"
2184
2185                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
2186                                  $diffinfo->{'status'} eq "C" || # copied
2187                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
2188                                 print "<div class=\"diff_info\">" .
2189                                       file_type($diffinfo->{'from_mode'}) . ":" .
2190                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2191                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
2192                                               $diffinfo->{'from_id'}) .
2193                                       " -> " .
2194                                       file_type($diffinfo->{'to_mode'}) . ":" .
2195                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2196                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
2197                                               $diffinfo->{'to_id'});
2198                                 print "</div>\n"; # class="diff_info"
2199
2200                         } else { # modified, mode changed, ...
2201                                 print "<div class=\"diff_info\">" .
2202                                       file_type($diffinfo->{'from_mode'}) . ":" .
2203                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2204                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2205                                               $diffinfo->{'from_id'}) .
2206                                       " -> " .
2207                                       file_type($diffinfo->{'to_mode'}) . ":" .
2208                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2209                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2210                                               $diffinfo->{'to_id'});
2211                                 print "</div>\n"; # class="diff_info"
2212                         }
2213
2214                         #print "<div class=\"diff extended_header\">\n";
2215                         $in_header = 1;
2216                         next LINE;
2217                 } # start of patch in patchset
2218
2219
2220                 if ($in_header && $patch_line =~ m/^---/) {
2221                         #print "</div>\n"; # class="diff extended_header"
2222                         $in_header = 0;
2223
2224                         my $file = $diffinfo->{'from_file'};
2225                         $file  ||= $diffinfo->{'file'};
2226                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2227                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2228                                         -class => "list"}, esc_path($file));
2229                         $patch_line =~ s|a/.*$|a/$file|g;
2230                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2231
2232                         $patch_line = <$fd>;
2233                         chomp $patch_line;
2234
2235                         #$patch_line =~ m/^+++/;
2236                         $file    = $diffinfo->{'to_file'};
2237                         $file  ||= $diffinfo->{'file'};
2238                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2239                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2240                                         -class => "list"}, esc_path($file));
2241                         $patch_line =~ s|b/.*|b/$file|g;
2242                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2243
2244                         next LINE;
2245                 }
2246                 next LINE if $in_header;
2247
2248                 print format_diff_line($patch_line);
2249         }
2250         print "</div>\n" if $patch_found; # class="patch"
2251
2252         print "</div>\n"; # class="patchset"
2253 }
2254
2255 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2256
2257 sub git_project_list_body {
2258         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2259
2260         my ($check_forks) = gitweb_check_feature('forks');
2261
2262         my @projects;
2263         foreach my $pr (@$projlist) {
2264                 my (@aa) = git_get_last_activity($pr->{'path'});
2265                 unless (@aa) {
2266                         next;
2267                 }
2268                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2269                 if (!defined $pr->{'descr'}) {
2270                         my $descr = git_get_project_description($pr->{'path'}) || "";
2271                         $pr->{'descr'} = chop_str($descr, 25, 5);
2272                 }
2273                 if (!defined $pr->{'owner'}) {
2274                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2275                 }
2276                 if ($check_forks) {
2277                         my $pname = $pr->{'path'};
2278                         if (($pname =~ s/\.git$//) &&
2279                             ($pname !~ /\/$/) &&
2280                             (-d "$projectroot/$pname")) {
2281                                 $pr->{'forks'} = "-d $projectroot/$pname";
2282                         }
2283                         else {
2284                                 $pr->{'forks'} = 0;
2285                         }
2286                 }
2287                 push @projects, $pr;
2288         }
2289
2290         $order ||= "project";
2291         $from = 0 unless defined $from;
2292         $to = $#projects if (!defined $to || $#projects < $to);
2293
2294         print "<table class=\"project_list\">\n";
2295         unless ($no_header) {
2296                 print "<tr>\n";
2297                 if ($check_forks) {
2298                         print "<th></th>\n";
2299                 }
2300                 if ($order eq "project") {
2301                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2302                         print "<th>Project</th>\n";
2303                 } else {
2304                         print "<th>" .
2305                               $cgi->a({-href => href(project=>undef, order=>'project'),
2306                                        -class => "header"}, "Project") .
2307                               "</th>\n";
2308                 }
2309                 if ($order eq "descr") {
2310                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2311                         print "<th>Description</th>\n";
2312                 } else {
2313                         print "<th>" .
2314                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2315                                        -class => "header"}, "Description") .
2316                               "</th>\n";
2317                 }
2318                 if ($order eq "owner") {
2319                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2320                         print "<th>Owner</th>\n";
2321                 } else {
2322                         print "<th>" .
2323                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2324                                        -class => "header"}, "Owner") .
2325                               "</th>\n";
2326                 }
2327                 if ($order eq "age") {
2328                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2329                         print "<th>Last Change</th>\n";
2330                 } else {
2331                         print "<th>" .
2332                               $cgi->a({-href => href(project=>undef, order=>'age'),
2333                                        -class => "header"}, "Last Change") .
2334                               "</th>\n";
2335                 }
2336                 print "<th></th>\n" .
2337                       "</tr>\n";
2338         }
2339         my $alternate = 1;
2340         for (my $i = $from; $i <= $to; $i++) {
2341                 my $pr = $projects[$i];
2342                 if ($alternate) {
2343                         print "<tr class=\"dark\">\n";
2344                 } else {
2345                         print "<tr class=\"light\">\n";
2346                 }
2347                 $alternate ^= 1;
2348                 if ($check_forks) {
2349                         print "<td>";
2350                         if ($pr->{'forks'}) {
2351                                 print "<!-- $pr->{'forks'} -->\n";
2352                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2353                         }
2354                         print "</td>\n";
2355                 }
2356                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2357                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2358                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2359                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2360                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2361                       $pr->{'age_string'} . "</td>\n" .
2362                       "<td class=\"link\">" .
2363                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2364                       $cgi->a({-href => '/git-browser/by-commit.html?r='.$pr->{'path'}}, "graphiclog") . " | " .
2365                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2366                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2367                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2368                       "</td>\n" .
2369                       "</tr>\n";
2370         }
2371         if (defined $extra) {
2372                 print "<tr>\n";
2373                 if ($check_forks) {
2374                         print "<td></td>\n";
2375                 }
2376                 print "<td colspan=\"5\">$extra</td>\n" .
2377                       "</tr>\n";
2378         }
2379         print "</table>\n";
2380 }
2381
2382 sub git_shortlog_body {
2383         # uses global variable $project
2384         my ($revlist, $from, $to, $refs, $extra) = @_;
2385
2386         $from = 0 unless defined $from;
2387         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2388
2389         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2390         my $alternate = 1;
2391         for (my $i = $from; $i <= $to; $i++) {
2392                 my $commit = $revlist->[$i];
2393                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2394                 my $ref = format_ref_marker($refs, $commit);
2395                 my %co = parse_commit($commit);
2396                 if ($alternate) {
2397                         print "<tr class=\"dark\">\n";
2398                 } else {
2399                         print "<tr class=\"light\">\n";
2400                 }
2401                 $alternate ^= 1;
2402                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2403                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2404                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2405                       "<td>";
2406                 print format_subject_html($co{'title'}, $co{'title_short'},
2407                                           href(action=>"commit", hash=>$commit), $ref);
2408                 print "</td>\n" .
2409                       "<td class=\"link\">" .
2410                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2411                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2412                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2413                 if (gitweb_have_snapshot()) {
2414                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2415                 }
2416                 print "</td>\n" .
2417                       "</tr>\n";
2418         }
2419         if (defined $extra) {
2420                 print "<tr>\n" .
2421                       "<td colspan=\"4\">$extra</td>\n" .
2422                       "</tr>\n";
2423         }
2424         print "</table>\n";
2425 }
2426
2427 sub git_history_body {
2428         # Warning: assumes constant type (blob or tree) during history
2429         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2430
2431         $from = 0 unless defined $from;
2432         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2433
2434         print "<table class=\"history\" cellspacing=\"0\">\n";
2435         my $alternate = 1;
2436         for (my $i = $from; $i <= $to; $i++) {
2437                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2438                         next;
2439                 }
2440
2441                 my $commit = $1;
2442                 my %co = parse_commit($commit);
2443                 if (!%co) {
2444                         next;
2445                 }
2446
2447                 my $ref = format_ref_marker($refs, $commit);
2448
2449                 if ($alternate) {
2450                         print "<tr class=\"dark\">\n";
2451                 } else {
2452                         print "<tr class=\"light\">\n";
2453                 }
2454                 $alternate ^= 1;
2455                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2456                       # shortlog uses      chop_str($co{'author_name'}, 10)
2457                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2458                       "<td>";
2459                 # originally git_history used chop_str($co{'title'}, 50)
2460                 print format_subject_html($co{'title'}, $co{'title_short'},
2461                                           href(action=>"commit", hash=>$commit), $ref);
2462                 print "</td>\n" .
2463                       "<td class=\"link\">" .
2464                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2465                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2466
2467                 if ($ftype eq 'blob') {
2468                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2469                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2470                         if (defined $blob_current && defined $blob_parent &&
2471                                         $blob_current ne $blob_parent) {
2472                                 print " | " .
2473                                         $cgi->a({-href => href(action=>"blobdiff",
2474                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2475                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2476                                                                file_name=>$file_name)},
2477                                                 "diff to current");
2478                         }
2479                 }
2480                 print "</td>\n" .
2481                       "</tr>\n";
2482         }
2483         if (defined $extra) {
2484                 print "<tr>\n" .
2485                       "<td colspan=\"4\">$extra</td>\n" .
2486                       "</tr>\n";
2487         }
2488         print "</table>\n";
2489 }
2490
2491 sub git_tags_body {
2492         # uses global variable $project
2493         my ($taglist, $from, $to, $extra) = @_;
2494         $from = 0 unless defined $from;
2495         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2496
2497         print "<table class=\"tags\" cellspacing=\"0\">\n";
2498         my $alternate = 1;
2499         for (my $i = $from; $i <= $to; $i++) {
2500                 my $entry = $taglist->[$i];
2501                 my %tag = %$entry;
2502                 my $comment = $tag{'subject'};
2503                 my $comment_short;
2504                 if (defined $comment) {
2505                         $comment_short = chop_str($comment, 30, 5);
2506                 }
2507                 if ($alternate) {
2508                         print "<tr class=\"dark\">\n";
2509                 } else {
2510                         print "<tr class=\"light\">\n";
2511                 }
2512                 $alternate ^= 1;
2513                 print "<td><i>$tag{'age'}</i></td>\n" .
2514                       "<td>" .
2515                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2516                                -class => "list name"}, esc_html($tag{'name'})) .
2517                       "</td>\n" .
2518                       "<td>";
2519                 if (defined $comment) {
2520                         print format_subject_html($comment, $comment_short,
2521                                                   href(action=>"tag", hash=>$tag{'id'}));
2522                 }
2523                 print "</td>\n" .
2524                       "<td class=\"selflink\">";
2525                 if ($tag{'type'} eq "tag") {
2526                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2527                 } else {
2528                         print "&nbsp;";
2529                 }
2530                 print "</td>\n" .
2531                       "<td class=\"link\">" . " | " .
2532                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2533                 if ($tag{'reftype'} eq "commit") {
2534                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2535                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2536                 } elsif ($tag{'reftype'} eq "blob") {
2537                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2538                 }
2539                 print "</td>\n" .
2540                       "</tr>";
2541         }
2542         if (defined $extra) {
2543                 print "<tr>\n" .
2544                       "<td colspan=\"5\">$extra</td>\n" .
2545                       "</tr>\n";
2546         }
2547         print "</table>\n";
2548 }
2549
2550 sub git_heads_body {
2551         # uses global variable $project
2552         my ($headlist, $head, $from, $to, $extra) = @_;
2553         $from = 0 unless defined $from;
2554         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2555
2556         print "<table class=\"heads\" cellspacing=\"0\">\n";
2557         my $alternate = 1;
2558         for (my $i = $from; $i <= $to; $i++) {
2559                 my $entry = $headlist->[$i];
2560                 my %ref = %$entry;
2561                 my $curr = $ref{'id'} eq $head;
2562                 if ($alternate) {
2563                         print "<tr class=\"dark\">\n";
2564                 } else {
2565                         print "<tr class=\"light\">\n";
2566                 }
2567                 $alternate ^= 1;
2568                 print "<td><i>$ref{'age'}</i></td>\n" .
2569                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2570                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2571                                -class => "list name"},esc_html($ref{'name'})) .
2572                       "</td>\n" .
2573                       "<td class=\"link\">" .
2574                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2575                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2576                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2577                       "</td>\n" .
2578                       "</tr>";
2579         }
2580         if (defined $extra) {
2581                 print "<tr>\n" .
2582                       "<td colspan=\"3\">$extra</td>\n" .
2583                       "</tr>\n";
2584         }
2585         print "</table>\n";
2586 }
2587
2588 ## ======================================================================
2589 ## ======================================================================
2590 ## actions
2591
2592 sub git_project_list {
2593         my $order = $cgi->param('o');
2594         if (defined $order && $order !~ m/project|descr|owner|age/) {
2595                 die_error(undef, "Unknown order parameter");
2596         }
2597
2598         my @list = git_get_projects_list();
2599         if (!@list) {
2600                 die_error(undef, "No projects found");
2601         }
2602
2603         git_header_html();
2604         if (-f $home_text) {
2605                 print "<div class=\"index_include\">\n";
2606                 open (my $fd, $home_text);
2607                 print <$fd>;
2608                 close $fd;
2609                 print "</div>\n";
2610         }
2611         git_project_list_body(\@list, $order);
2612         git_footer_html();
2613 }
2614
2615 sub git_forks {
2616         my $order = $cgi->param('o');
2617         if (defined $order && $order !~ m/project|descr|owner|age/) {
2618                 die_error(undef, "Unknown order parameter");
2619         }
2620
2621         my @list = git_get_projects_list($project);
2622         if (!@list) {
2623                 die_error(undef, "No forks found");
2624         }
2625
2626         git_header_html();
2627         git_print_page_nav('','');
2628         git_print_header_div('summary', "$project forks");
2629         git_project_list_body(\@list, $order);
2630         git_footer_html();
2631 }
2632
2633 sub git_project_index {
2634         my @projects = git_get_projects_list($project);
2635
2636         print $cgi->header(
2637                 -type => 'text/plain',
2638                 -charset => 'utf-8',
2639                 -content_disposition => 'inline; filename="index.aux"');
2640
2641         foreach my $pr (@projects) {
2642                 if (!exists $pr->{'owner'}) {
2643                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2644                 }
2645
2646                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2647                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2648                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2649                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2650                 $path  =~ s/ /\+/g;
2651                 $owner =~ s/ /\+/g;
2652
2653                 print "$path $owner\n";
2654         }
2655 }
2656
2657 sub git_summary {
2658         my $descr = git_get_project_description($project) || "none";
2659         my $head = git_get_head_hash($project);
2660         my %co = parse_commit($head);
2661         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2662
2663         my $owner = git_get_project_owner($project);
2664
2665         my $refs = git_get_references();
2666         my @taglist  = git_get_tags_list(15);
2667         my @headlist = git_get_heads_list(15);
2668         my @forklist;
2669         my ($check_forks) = gitweb_check_feature('forks');
2670
2671         if ($check_forks) {
2672                 @forklist = git_get_projects_list($project);
2673         }
2674
2675         git_header_html();
2676         git_print_page_nav('summary','', $head);
2677
2678         print "<div class=\"title\">&nbsp;</div>\n";
2679         print "<table cellspacing=\"0\">\n" .
2680               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2681               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2682               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2683         # use per project git URL list in $projectroot/$project/cloneurl
2684         # or make project git URL from git base URL and project name
2685         my $url_tag = "URL";
2686         my @url_list = git_get_project_url_list($project);
2687         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2688         foreach my $git_url (@url_list) {
2689                 next unless $git_url;
2690                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2691                 $url_tag = "";
2692         }
2693         print "</table>\n";
2694
2695         if (-s "$projectroot/$project/README.html") {
2696                 if (open my $fd, "$projectroot/$project/README.html") {
2697                         print "<div class=\"title\">readme</div>\n";
2698                         print $_ while (<$fd>);
2699                         close $fd;
2700                 }
2701         }
2702
2703         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2704                 git_get_head_hash($project), "--"
2705                 or die_error(undef, "Open git-rev-list failed");
2706         my @revlist = map { chomp; $_ } <$fd>;
2707         close $fd;
2708         git_print_header_div('shortlog');
2709         git_shortlog_body(\@revlist, 0, 15, $refs,
2710                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2711
2712         if (@taglist) {
2713                 git_print_header_div('tags');
2714                 git_tags_body(\@taglist, 0, 15,
2715                               $cgi->a({-href => href(action=>"tags")}, "..."));
2716         }
2717
2718         if (@headlist) {
2719                 git_print_header_div('heads');
2720                 git_heads_body(\@headlist, $head, 0, 15,
2721                                $cgi->a({-href => href(action=>"heads")}, "..."));
2722         }
2723
2724         if (@forklist) {
2725                 git_print_header_div('forks');
2726                 git_project_list_body(\@forklist, undef, 0, 15,
2727                                       $cgi->a({-href => href(action=>"forks")}, "..."),
2728                                       'noheader');
2729         }
2730
2731         git_footer_html();
2732 }
2733
2734 sub git_tag {
2735         my $head = git_get_head_hash($project);
2736         git_header_html();
2737         git_print_page_nav('','', $head,undef,$head);
2738         my %tag = parse_tag($hash);
2739         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2740         print "<div class=\"title_text\">\n" .
2741               "<table cellspacing=\"0\">\n" .
2742               "<tr>\n" .
2743               "<td>object</td>\n" .
2744               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2745                                $tag{'object'}) . "</td>\n" .
2746               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2747                                               $tag{'type'}) . "</td>\n" .
2748               "</tr>\n";
2749         if (defined($tag{'author'})) {
2750                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2751                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2752                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2753                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2754                         "</td></tr>\n";
2755         }
2756         print "</table>\n\n" .
2757               "</div>\n";
2758         print "<div class=\"page_body\">";
2759         my $comment = $tag{'comment'};
2760         foreach my $line (@$comment) {
2761                 print esc_html($line) . "<br/>\n";
2762         }
2763         print "</div>\n";
2764         git_footer_html();
2765 }
2766
2767 sub git_blame2 {
2768         my $fd;
2769         my $ftype;
2770
2771         my ($have_blame) = gitweb_check_feature('blame');
2772         if (!$have_blame) {
2773                 die_error('403 Permission denied', "Permission denied");
2774         }
2775         die_error('404 Not Found', "File name not defined") if (!$file_name);
2776         $hash_base ||= git_get_head_hash($project);
2777         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2778         my %co = parse_commit($hash_base)
2779                 or die_error(undef, "Reading commit failed");
2780         if (!defined $hash) {
2781                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2782                         or die_error(undef, "Error looking up file");
2783         }
2784         $ftype = git_get_type($hash);
2785         if ($ftype !~ "blob") {
2786                 die_error("400 Bad Request", "Object is not a blob");
2787         }
2788         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
2789               $file_name, $hash_base)
2790                 or die_error(undef, "Open git-blame failed");
2791         git_header_html();
2792         my $formats_nav =
2793                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2794                         "blob") .
2795                 " | " .
2796                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2797                         "history") .
2798                 " | " .
2799                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2800                         "HEAD");
2801         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2802         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2803         git_print_page_path($file_name, $ftype, $hash_base);
2804         my @rev_color = (qw(light2 dark2));
2805         my $num_colors = scalar(@rev_color);
2806         my $current_color = 0;
2807         my $last_rev;
2808         print <<HTML;
2809 <div class="page_body">
2810 <table class="blame">
2811 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2812 HTML
2813         my %metainfo = ();
2814         while (1) {
2815                 $_ = <$fd>;
2816                 last unless defined $_;
2817                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
2818                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
2819                 if (!exists $metainfo{$full_rev}) {
2820                         $metainfo{$full_rev} = {};
2821                 }
2822                 my $meta = $metainfo{$full_rev};
2823                 while (<$fd>) {
2824                         last if (s/^\t//);
2825                         if (/^(\S+) (.*)$/) {
2826                                 $meta->{$1} = $2;
2827                         }
2828                 }
2829                 my $data = $_;
2830                 my $rev = substr($full_rev, 0, 8);
2831                 my $author = $meta->{'author'};
2832                 my %date = parse_date($meta->{'author-time'},
2833                                       $meta->{'author-tz'});
2834                 my $date = $date{'iso-tz'};
2835                 if ($group_size) {
2836                         $current_color = ++$current_color % $num_colors;
2837                 }
2838                 print "<tr class=\"$rev_color[$current_color]\">\n";
2839                 if ($group_size) {
2840                         print "<td class=\"sha1\"";
2841                         print " title=\"". esc_html($author) . ", $date\"";
2842                         print " rowspan=\"$group_size\"" if ($group_size > 1);
2843                         print ">";
2844                         print $cgi->a({-href => href(action=>"commit",
2845                                                      hash=>$full_rev,
2846                                                      file_name=>$file_name)},
2847                                       esc_html($rev));
2848                         print "</td>\n";
2849                 }
2850                 my $blamed = href(action => 'blame',
2851                                   file_name => $meta->{'filename'},
2852                                   hash_base => $full_rev);
2853                 print "<td class=\"linenr\">";
2854                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
2855                                 -id => "l$lineno",
2856                                 -class => "linenr" },
2857                               esc_html($lineno));
2858                 print "</td>";
2859                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2860                 print "</tr>\n";
2861         }
2862         print "</table>\n";
2863         print "</div>";
2864         close $fd
2865                 or print "Reading blob failed\n";
2866         git_footer_html();
2867 }
2868
2869 sub git_blame {
2870         my $fd;
2871
2872         my ($have_blame) = gitweb_check_feature('blame');
2873         if (!$have_blame) {
2874                 die_error('403 Permission denied', "Permission denied");
2875         }
2876         die_error('404 Not Found', "File name not defined") if (!$file_name);
2877         $hash_base ||= git_get_head_hash($project);
2878         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2879         my %co = parse_commit($hash_base)
2880                 or die_error(undef, "Reading commit failed");
2881         if (!defined $hash) {
2882                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2883                         or die_error(undef, "Error lookup file");
2884         }
2885         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2886                 or die_error(undef, "Open git-annotate failed");
2887         git_header_html();
2888         my $formats_nav =
2889                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2890                         "blob") .
2891                 " | " .
2892                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2893                         "history") .
2894                 " | " .
2895                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2896                         "HEAD");
2897         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2898         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2899         git_print_page_path($file_name, 'blob', $hash_base);
2900         print "<div class=\"page_body\">\n";
2901         print <<HTML;
2902 <table class="blame">
2903   <tr>
2904     <th>Commit</th>
2905     <th>Age</th>
2906     <th>Author</th>
2907     <th>Line</th>
2908     <th>Data</th>
2909   </tr>
2910 HTML
2911         my @line_class = (qw(light dark));
2912         my $line_class_len = scalar (@line_class);
2913         my $line_class_num = $#line_class;
2914         while (my $line = <$fd>) {
2915                 my $long_rev;
2916                 my $short_rev;
2917                 my $author;
2918                 my $time;
2919                 my $lineno;
2920                 my $data;
2921                 my $age;
2922                 my $age_str;
2923                 my $age_class;
2924
2925                 chomp $line;
2926                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2927
2928                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2929                         $long_rev = $1;
2930                         $author   = $2;
2931                         $time     = $3;
2932                         $lineno   = $4;
2933                         $data     = $5;
2934                 } else {
2935                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2936                         next;
2937                 }
2938                 $short_rev  = substr ($long_rev, 0, 8);
2939                 $age        = time () - $time;
2940                 $age_str    = age_string ($age);
2941                 $age_str    =~ s/ /&nbsp;/g;
2942                 $age_class  = age_class($age);
2943                 $author     = esc_html ($author);
2944                 $author     =~ s/ /&nbsp;/g;
2945
2946                 $data = untabify($data);
2947                 $data = esc_html ($data);
2948
2949                 print <<HTML;
2950   <tr class="$line_class[$line_class_num]">
2951     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2952     <td class="$age_class">$age_str</td>
2953     <td>$author</td>
2954     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2955     <td class="pre">$data</td>
2956   </tr>
2957 HTML
2958         } # while (my $line = <$fd>)
2959         print "</table>\n\n";
2960         close $fd
2961                 or print "Reading blob failed.\n";
2962         print "</div>";
2963         git_footer_html();
2964 }
2965
2966 sub git_tags {
2967         my $head = git_get_head_hash($project);
2968         git_header_html();
2969         git_print_page_nav('','', $head,undef,$head);
2970         git_print_header_div('summary', $project);
2971
2972         my @tagslist = git_get_tags_list();
2973         if (@tagslist) {
2974                 git_tags_body(\@tagslist);
2975         }
2976         git_footer_html();
2977 }
2978
2979 sub git_heads {
2980         my $head = git_get_head_hash($project);
2981         git_header_html();
2982         git_print_page_nav('','', $head,undef,$head);
2983         git_print_header_div('summary', $project);
2984
2985         my @headslist = git_get_heads_list();
2986         if (@headslist) {
2987                 git_heads_body(\@headslist, $head);
2988         }
2989         git_footer_html();
2990 }
2991
2992 sub git_blob_plain {
2993         my $expires;
2994
2995         if (!defined $hash) {
2996                 if (defined $file_name) {
2997                         my $base = $hash_base || git_get_head_hash($project);
2998                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2999                                 or die_error(undef, "Error lookup file");
3000                 } else {
3001                         die_error(undef, "No file name defined");
3002                 }
3003         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3004                 # blobs defined by non-textual hash id's can be cached
3005                 $expires = "+1d";
3006         }
3007
3008         my $type = shift;
3009         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3010                 or die_error(undef, "Couldn't cat $file_name, $hash");
3011
3012         $type ||= blob_mimetype($fd, $file_name);
3013
3014         # save as filename, even when no $file_name is given
3015         my $save_as = "$hash";
3016         if (defined $file_name) {
3017                 $save_as = $file_name;
3018         } elsif ($type =~ m/^text\//) {
3019                 $save_as .= '.txt';
3020         }
3021
3022         print $cgi->header(
3023                 -type => "$type",
3024                 -expires=>$expires,
3025                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3026         undef $/;
3027         binmode STDOUT, ':raw';
3028         print <$fd>;
3029         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3030         $/ = "\n";
3031         close $fd;
3032 }
3033
3034 sub git_blob {
3035         my $expires;
3036
3037         if (!defined $hash) {
3038                 if (defined $file_name) {
3039                         my $base = $hash_base || git_get_head_hash($project);
3040                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3041                                 or die_error(undef, "Error lookup file");
3042                 } else {
3043                         die_error(undef, "No file name defined");
3044                 }
3045         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3046                 # blobs defined by non-textual hash id's can be cached
3047                 $expires = "+1d";
3048         }
3049
3050         my ($have_blame) = gitweb_check_feature('blame');
3051         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3052                 or die_error(undef, "Couldn't cat $file_name, $hash");
3053         my $mimetype = blob_mimetype($fd, $file_name);
3054         if ($mimetype !~ m/^text\//) {
3055                 close $fd;
3056                 return git_blob_plain($mimetype);
3057         }
3058         git_header_html(undef, $expires);
3059         my $formats_nav = '';
3060         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3061                 if (defined $file_name) {
3062                         if ($have_blame) {
3063                                 $formats_nav .=
3064                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3065                                                                hash=>$hash, file_name=>$file_name)},
3066                                                 "blame") .
3067                                         " | ";
3068                         }
3069                         $formats_nav .=
3070                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3071                                                        hash=>$hash, file_name=>$file_name)},
3072                                         "history") .
3073                                 " | " .
3074                                 $cgi->a({-href => href(action=>"blob_plain",
3075                                                        hash=>$hash, file_name=>$file_name)},
3076                                         "raw") .
3077                                 " | " .
3078                                 $cgi->a({-href => href(action=>"blob",
3079                                                        hash_base=>"HEAD", file_name=>$file_name)},
3080                                         "HEAD");
3081                 } else {
3082                         $formats_nav .=
3083                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3084                 }
3085                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3086                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3087         } else {
3088                 print "<div class=\"page_nav\">\n" .
3089                       "<br/><br/></div>\n" .
3090                       "<div class=\"title\">$hash</div>\n";
3091         }
3092         git_print_page_path($file_name, "blob", $hash_base);
3093         print "<div class=\"page_body\">\n";
3094         my $nr;
3095         while (my $line = <$fd>) {
3096                 chomp $line;
3097                 $nr++;
3098                 $line = untabify($line);
3099                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3100                        $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3101         }
3102         close $fd
3103                 or print "Reading blob failed.\n";
3104         print "</div>";
3105         git_footer_html();
3106 }
3107
3108 sub git_tree {
3109         my $have_snapshot = gitweb_have_snapshot();
3110
3111         if (!defined $hash_base) {
3112                 $hash_base = "HEAD";
3113         }
3114         if (!defined $hash) {
3115                 if (defined $file_name) {
3116                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3117                 } else {
3118                         $hash = $hash_base;
3119                 }
3120         }
3121         $/ = "\0";
3122         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3123                 or die_error(undef, "Open git-ls-tree failed");
3124         my @entries = map { chomp; $_ } <$fd>;
3125         close $fd or die_error(undef, "Reading tree failed");
3126         $/ = "\n";
3127
3128         my $refs = git_get_references();
3129         my $ref = format_ref_marker($refs, $hash_base);
3130         git_header_html();
3131         my $basedir = '';
3132         my ($have_blame) = gitweb_check_feature('blame');
3133         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3134                 my @views_nav = ();
3135                 if (defined $file_name) {
3136                         push @views_nav,
3137                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3138                                                        hash=>$hash, file_name=>$file_name)},
3139                                         "history"),
3140                                 $cgi->a({-href => href(action=>"tree",
3141                                                        hash_base=>"HEAD", file_name=>$file_name)},
3142                                         "HEAD"),
3143                 }
3144                 if ($have_snapshot) {
3145                         # FIXME: Should be available when we have no hash base as well.
3146                         push @views_nav,
3147                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3148                                         "snapshot");
3149                 }
3150                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3151                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3152         } else {
3153                 undef $hash_base;
3154                 print "<div class=\"page_nav\">\n";
3155                 print "<br/><br/></div>\n";
3156                 print "<div class=\"title\">$hash</div>\n";
3157         }
3158         if (defined $file_name) {
3159                 $basedir = $file_name;
3160                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3161                         $basedir .= '/';
3162                 }
3163         }
3164         git_print_page_path($file_name, 'tree', $hash_base);
3165         print "<div class=\"page_body\">\n";
3166         print "<table cellspacing=\"0\">\n";
3167         my $alternate = 1;
3168         # '..' (top directory) link if possible
3169         if (defined $hash_base &&
3170             defined $file_name && $file_name =~ m![^/]+$!) {
3171                 if ($alternate) {
3172                         print "<tr class=\"dark\">\n";
3173                 } else {
3174                         print "<tr class=\"light\">\n";
3175                 }
3176                 $alternate ^= 1;
3177
3178                 my $up = $file_name;
3179                 $up =~ s!/?[^/]+$!!;
3180                 undef $up unless $up;
3181                 # based on git_print_tree_entry
3182                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3183                 print '<td class="list">';
3184                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3185                                              file_name=>$up)},
3186                               "..");
3187                 print "</td>\n";
3188                 print "<td class=\"link\"></td>\n";
3189
3190                 print "</tr>\n";
3191         }
3192         foreach my $line (@entries) {
3193                 my %t = parse_ls_tree_line($line, -z => 1);
3194
3195                 if ($alternate) {
3196                         print "<tr class=\"dark\">\n";
3197                 } else {
3198                         print "<tr class=\"light\">\n";
3199                 }
3200                 $alternate ^= 1;
3201
3202                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3203
3204                 print "</tr>\n";
3205         }
3206         print "</table>\n" .
3207               "</div>";
3208         git_footer_html();
3209 }
3210
3211 sub git_snapshot {
3212         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3213         my $have_snapshot = (defined $ctype && defined $suffix);
3214         if (!$have_snapshot) {
3215                 die_error('403 Permission denied', "Permission denied");
3216         }
3217
3218         if (!defined $hash) {
3219                 $hash = git_get_head_hash($project);
3220         }
3221
3222         my $filename = basename($project) . "-$hash.tar.$suffix";
3223
3224         print $cgi->header(
3225                 -type => 'application/x-tar',
3226                 -content_encoding => $ctype,
3227                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3228                 -status => '200 OK');
3229
3230         my $git = git_cmd_str();
3231         my $name = $project;
3232         $name =~ s/\047/\047\\\047\047/g;
3233         open my $fd, "-|",
3234         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3235                 or die_error(undef, "Execute git-tar-tree failed.");
3236         binmode STDOUT, ':raw';
3237         print <$fd>;
3238         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3239         close $fd;
3240
3241 }
3242
3243 sub git_log {
3244         my $head = git_get_head_hash($project);
3245         if (!defined $hash) {
3246                 $hash = $head;
3247         }
3248         if (!defined $page) {
3249                 $page = 0;
3250         }
3251         my $refs = git_get_references();
3252
3253         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3254         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3255                 or die_error(undef, "Open git-rev-list failed");
3256         my @revlist = map { chomp; $_ } <$fd>;
3257         close $fd;
3258
3259         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3260
3261         git_header_html();
3262         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3263
3264         if (!@revlist) {
3265                 my %co = parse_commit($hash);
3266
3267                 git_print_header_div('summary', $project);
3268                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3269         }
3270         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3271                 my $commit = $revlist[$i];
3272                 my $ref = format_ref_marker($refs, $commit);
3273                 my %co = parse_commit($commit);
3274                 next if !%co;
3275                 my %ad = parse_date($co{'author_epoch'});
3276                 git_print_header_div('commit',
3277                                "<span class=\"age\">$co{'age_string'}</span>" .
3278                                esc_html($co{'title'}) . $ref,
3279                                $commit);
3280                 print "<div class=\"title_text\">\n" .
3281                       "<div class=\"log_link\">\n" .
3282                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3283                       " | " .
3284                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3285                       " | " .
3286                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3287                       "<br/>\n" .
3288                       "</div>\n" .
3289                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3290                       "</div>\n";
3291
3292                 print "<div class=\"log_body\">\n";
3293                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3294                 print "</div>\n";
3295         }
3296         git_footer_html();
3297 }
3298
3299 sub git_commit {
3300         my %co = parse_commit($hash);
3301         if (!%co) {
3302                 die_error(undef, "Unknown commit object");
3303         }
3304         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3305         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3306
3307         my $parent = $co{'parent'};
3308         if (!defined $parent) {
3309                 $parent = "--root";
3310         }
3311         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3312                 @diff_opts, $parent, $hash, "--"
3313                 or die_error(undef, "Open git-diff-tree failed");
3314         my @difftree = map { chomp; $_ } <$fd>;
3315         close $fd or die_error(undef, "Reading git-diff-tree failed");
3316
3317         # non-textual hash id's can be cached
3318         my $expires;
3319         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3320                 $expires = "+1d";
3321         }
3322         my $refs = git_get_references();
3323         my $ref = format_ref_marker($refs, $co{'id'});
3324
3325         my $have_snapshot = gitweb_have_snapshot();
3326
3327         my @views_nav = ();
3328         if (defined $file_name && defined $co{'parent'}) {
3329                 push @views_nav,
3330                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3331                                 "blame");
3332         }
3333         git_header_html(undef, $expires);
3334         git_print_page_nav('commit', '',
3335                            $hash, $co{'tree'}, $hash,
3336                            join (' | ', @views_nav));
3337
3338         if (defined $co{'parent'}) {
3339                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3340         } else {
3341                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3342         }
3343         print "<div class=\"title_text\">\n" .
3344               "<table cellspacing=\"0\">\n";
3345         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3346               "<tr>" .
3347               "<td></td><td> $ad{'rfc2822'}";
3348         if ($ad{'hour_local'} < 6) {
3349                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3350                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3351         } else {
3352                 printf(" (%02d:%02d %s)",
3353                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3354         }
3355         print "</td>" .
3356               "</tr>\n";
3357         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3358         print "<tr><td></td><td> $cd{'rfc2822'}" .
3359               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3360               "</td></tr>\n";
3361         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3362         print "<tr>" .
3363               "<td>tree</td>" .
3364               "<td class=\"sha1\">" .
3365               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3366                        class => "list"}, $co{'tree'}) .
3367               "</td>" .
3368               "<td class=\"link\">" .
3369               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3370                       "tree");
3371         if ($have_snapshot) {
3372                 print " | " .
3373                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3374         }
3375         print "</td>" .
3376               "</tr>\n";
3377         my $parents = $co{'parents'};
3378         foreach my $par (@$parents) {
3379                 print "<tr>" .
3380                       "<td>parent</td>" .
3381                       "<td class=\"sha1\">" .
3382                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3383                                class => "list"}, $par) .
3384                       "</td>" .
3385                       "<td class=\"link\">" .
3386                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3387                       " | " .
3388                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3389                       "</td>" .
3390                       "</tr>\n";
3391         }
3392         print "</table>".
3393               "</div>\n";
3394
3395         print "<div class=\"page_body\">\n";
3396         git_print_log($co{'comment'});
3397         print "</div>\n";
3398
3399         git_difftree_body(\@difftree, $hash, $parent);
3400
3401         git_footer_html();
3402 }
3403
3404 sub git_blobdiff {
3405         my $format = shift || 'html';
3406
3407         my $fd;
3408         my @difftree;
3409         my %diffinfo;
3410         my $expires;
3411
3412         # preparing $fd and %diffinfo for git_patchset_body
3413         # new style URI
3414         if (defined $hash_base && defined $hash_parent_base) {
3415                 if (defined $file_name) {
3416                         # read raw output
3417                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3418                                 $hash_parent_base, $hash_base,
3419                                 "--", $file_name
3420                                 or die_error(undef, "Open git-diff-tree failed");
3421                         @difftree = map { chomp; $_ } <$fd>;
3422                         close $fd
3423                                 or die_error(undef, "Reading git-diff-tree failed");
3424                         @difftree
3425                                 or die_error('404 Not Found', "Blob diff not found");
3426
3427                 } elsif (defined $hash &&
3428                          $hash =~ /[0-9a-fA-F]{40}/) {
3429                         # try to find filename from $hash
3430
3431                         # read filtered raw output
3432                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3433                                 $hash_parent_base, $hash_base, "--"
3434                                 or die_error(undef, "Open git-diff-tree failed");
3435                         @difftree =
3436                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3437                                 # $hash == to_id
3438                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3439                                 map { chomp; $_ } <$fd>;
3440                         close $fd
3441                                 or die_error(undef, "Reading git-diff-tree failed");
3442                         @difftree
3443                                 or die_error('404 Not Found', "Blob diff not found");
3444
3445                 } else {
3446                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3447                 }
3448
3449                 if (@difftree > 1) {
3450                         die_error('404 Not Found', "Ambiguous blob diff specification");
3451                 }
3452
3453                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3454                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3455                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3456
3457                 $hash_parent ||= $diffinfo{'from_id'};
3458                 $hash        ||= $diffinfo{'to_id'};
3459
3460                 # non-textual hash id's can be cached
3461                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3462                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3463                         $expires = '+1d';
3464                 }
3465
3466                 # open patch output
3467                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3468                         '-p', $hash_parent_base, $hash_base,
3469                         "--", $file_name
3470                         or die_error(undef, "Open git-diff-tree failed");
3471         }
3472
3473         # old/legacy style URI
3474         if (!%diffinfo && # if new style URI failed
3475             defined $hash && defined $hash_parent) {
3476                 # fake git-diff-tree raw output
3477                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3478                 $diffinfo{'from_id'} = $hash_parent;
3479                 $diffinfo{'to_id'}   = $hash;
3480                 if (defined $file_name) {
3481                         if (defined $file_parent) {
3482                                 $diffinfo{'status'} = '2';
3483                                 $diffinfo{'from_file'} = $file_parent;
3484                                 $diffinfo{'to_file'}   = $file_name;
3485                         } else { # assume not renamed
3486                                 $diffinfo{'status'} = '1';
3487                                 $diffinfo{'from_file'} = $file_name;
3488                                 $diffinfo{'to_file'}   = $file_name;
3489                         }
3490                 } else { # no filename given
3491                         $diffinfo{'status'} = '2';
3492                         $diffinfo{'from_file'} = $hash_parent;
3493                         $diffinfo{'to_file'}   = $hash;
3494                 }
3495
3496                 # non-textual hash id's can be cached
3497                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3498                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3499                         $expires = '+1d';
3500                 }
3501
3502                 # open patch output
3503                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3504                         $hash_parent, $hash, "--"
3505                         or die_error(undef, "Open git-diff failed");
3506         } else  {
3507                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3508                         unless %diffinfo;
3509         }
3510
3511         # header
3512         if ($format eq 'html') {
3513                 my $formats_nav =
3514                         $cgi->a({-href => href(action=>"blobdiff_plain",
3515                                                hash=>$hash, hash_parent=>$hash_parent,
3516                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3517                                                file_name=>$file_name, file_parent=>$file_parent)},
3518                                 "raw");
3519                 git_header_html(undef, $expires);
3520                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3521                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3522                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3523                 } else {
3524                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3525                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3526                 }
3527                 if (defined $file_name) {
3528                         git_print_page_path($file_name, "blob", $hash_base);
3529                 } else {
3530                         print "<div class=\"page_path\"></div>\n";
3531                 }
3532
3533         } elsif ($format eq 'plain') {
3534                 print $cgi->header(
3535                         -type => 'text/plain',
3536                         -charset => 'utf-8',
3537                         -expires => $expires,
3538                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3539
3540                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3541
3542         } else {
3543                 die_error(undef, "Unknown blobdiff format");
3544         }
3545
3546         # patch
3547         if ($format eq 'html') {
3548                 print "<div class=\"page_body\">\n";
3549
3550                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3551                 close $fd;
3552
3553                 print "</div>\n"; # class="page_body"
3554                 git_footer_html();
3555
3556         } else {
3557                 while (my $line = <$fd>) {
3558                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
3559                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
3560
3561                         print $line;
3562
3563                         last if $line =~ m!^\+\+\+!;
3564                 }
3565                 local $/ = undef;
3566                 print <$fd>;
3567                 close $fd;
3568         }
3569 }
3570
3571 sub git_blobdiff_plain {
3572         git_blobdiff('plain');
3573 }
3574
3575 sub git_commitdiff {
3576         my $format = shift || 'html';
3577         my %co = parse_commit($hash);
3578         if (!%co) {
3579                 die_error(undef, "Unknown commit object");
3580         }
3581
3582         # we need to prepare $formats_nav before any parameter munging
3583         my $formats_nav;
3584         if ($format eq 'html') {
3585                 $formats_nav =
3586                         $cgi->a({-href => href(action=>"commitdiff_plain",
3587                                                hash=>$hash, hash_parent=>$hash_parent)},
3588                                 "raw");
3589
3590                 if (defined $hash_parent) {
3591                         # commitdiff with two commits given
3592                         my $hash_parent_short = $hash_parent;
3593                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3594                                 $hash_parent_short = substr($hash_parent, 0, 7);
3595                         }
3596                         $formats_nav .=
3597                                 ' (from: ' .
3598                                 $cgi->a({-href => href(action=>"commitdiff",
3599                                                        hash=>$hash_parent)},
3600                                         esc_html($hash_parent_short)) .
3601                                 ')';
3602                 } elsif (!$co{'parent'}) {
3603                         # --root commitdiff
3604                         $formats_nav .= ' (initial)';
3605                 } elsif (scalar @{$co{'parents'}} == 1) {
3606                         # single parent commit
3607                         $formats_nav .=
3608                                 ' (parent: ' .
3609                                 $cgi->a({-href => href(action=>"commitdiff",
3610                                                        hash=>$co{'parent'})},
3611                                         esc_html(substr($co{'parent'}, 0, 7))) .
3612                                 ')';
3613                 } else {
3614                         # merge commit
3615                         $formats_nav .=
3616                                 ' (merge: ' .
3617                                 join(' ', map {
3618                                         $cgi->a({-href => href(action=>"commitdiff",
3619                                                                hash=>$_)},
3620                                                 esc_html(substr($_, 0, 7)));
3621                                 } @{$co{'parents'}} ) .
3622                                 ')';
3623                 }
3624         }
3625
3626         if (!defined $hash_parent) {
3627                 $hash_parent = $co{'parent'} || '--root';
3628         }
3629
3630         # read commitdiff
3631         my $fd;
3632         my @difftree;
3633         if ($format eq 'html') {
3634                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3635                         "--no-commit-id", "--patch-with-raw", "--full-index",
3636                         $hash_parent, $hash, "--"
3637                         or die_error(undef, "Open git-diff-tree failed");
3638
3639                 while (chomp(my $line = <$fd>)) {
3640                         # empty line ends raw part of diff-tree output
3641                         last unless $line;
3642                         push @difftree, $line;
3643                 }
3644
3645         } elsif ($format eq 'plain') {
3646                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3647                         '-p', $hash_parent, $hash, "--"
3648                         or die_error(undef, "Open git-diff-tree failed");
3649
3650         } else {
3651                 die_error(undef, "Unknown commitdiff format");
3652         }
3653
3654         # non-textual hash id's can be cached
3655         my $expires;
3656         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3657                 $expires = "+1d";
3658         }
3659
3660         # write commit message
3661         if ($format eq 'html') {
3662                 my $refs = git_get_references();
3663                 my $ref = format_ref_marker($refs, $co{'id'});
3664
3665                 git_header_html(undef, $expires);
3666                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3667                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3668                 git_print_authorship(\%co);
3669                 print "<div class=\"page_body\">\n";
3670                 if (@{$co{'comment'}} > 1) {
3671                         print "<div class=\"log\">\n";
3672                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
3673                         print "</div>\n"; # class="log"
3674                 }
3675
3676         } elsif ($format eq 'plain') {
3677                 my $refs = git_get_references("tags");
3678                 my $tagname = git_get_rev_name_tags($hash);
3679                 my $filename = basename($project) . "-$hash.patch";
3680
3681                 print $cgi->header(
3682                         -type => 'text/plain',
3683                         -charset => 'utf-8',
3684                         -expires => $expires,
3685                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3686                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3687                 print <<TEXT;
3688 From: $co{'author'}
3689 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3690 Subject: $co{'title'}
3691 TEXT
3692                 print "X-Git-Tag: $tagname\n" if $tagname;
3693                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3694
3695                 foreach my $line (@{$co{'comment'}}) {
3696                         print "$line\n";
3697                 }
3698                 print "---\n\n";
3699         }
3700
3701         # write patch
3702         if ($format eq 'html') {
3703                 git_difftree_body(\@difftree, $hash, $hash_parent);
3704                 print "<br/>\n";
3705
3706                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3707                 close $fd;
3708                 print "</div>\n"; # class="page_body"
3709                 git_footer_html();
3710
3711         } elsif ($format eq 'plain') {
3712                 local $/ = undef;
3713                 print <$fd>;
3714                 close $fd
3715                         or print "Reading git-diff-tree failed\n";
3716         }
3717 }
3718
3719 sub git_commitdiff_plain {
3720         git_commitdiff('plain');
3721 }
3722
3723 sub git_history {
3724         if (!defined $hash_base) {
3725                 $hash_base = git_get_head_hash($project);
3726         }
3727         if (!defined $page) {
3728                 $page = 0;
3729         }
3730         my $ftype;
3731         my %co = parse_commit($hash_base);
3732         if (!%co) {
3733                 die_error(undef, "Unknown commit object");
3734         }
3735
3736         my $refs = git_get_references();
3737         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3738
3739         if (!defined $hash && defined $file_name) {
3740                 $hash = git_get_hash_by_path($hash_base, $file_name);
3741         }
3742         if (defined $hash) {
3743                 $ftype = git_get_type($hash);
3744         }
3745
3746         open my $fd, "-|",
3747                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3748                         or die_error(undef, "Open git-rev-list-failed");
3749         my @revlist = map { chomp; $_ } <$fd>;
3750         close $fd
3751                 or die_error(undef, "Reading git-rev-list failed");
3752
3753         my $paging_nav = '';
3754         if ($page > 0) {
3755                 $paging_nav .=
3756                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3757                                                file_name=>$file_name)},
3758                                 "first");
3759                 $paging_nav .= " &sdot; " .
3760                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3761                                                file_name=>$file_name, page=>$page-1),
3762                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3763         } else {
3764                 $paging_nav .= "first";
3765                 $paging_nav .= " &sdot; prev";
3766         }
3767         if ($#revlist >= (100 * ($page+1)-1)) {
3768                 $paging_nav .= " &sdot; " .
3769                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3770                                                file_name=>$file_name, page=>$page+1),
3771                                  -accesskey => "n", -title => "Alt-n"}, "next");
3772         } else {
3773                 $paging_nav .= " &sdot; next";
3774         }
3775         my $next_link = '';
3776         if ($#revlist >= (100 * ($page+1)-1)) {
3777                 $next_link =
3778                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3779                                                file_name=>$file_name, page=>$page+1),
3780                                  -title => "Alt-n"}, "next");
3781         }
3782
3783         git_header_html();
3784         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3785         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3786         git_print_page_path($file_name, $ftype, $hash_base);
3787
3788         git_history_body(\@revlist, ($page * 100), $#revlist,
3789                          $refs, $hash_base, $ftype, $next_link);
3790
3791         git_footer_html();
3792 }
3793
3794 sub git_search {
3795         if (!defined $searchtext) {
3796                 die_error(undef, "Text field empty");
3797         }
3798         if (!defined $hash) {
3799                 $hash = git_get_head_hash($project);
3800         }
3801         my %co = parse_commit($hash);
3802         if (!%co) {
3803                 die_error(undef, "Unknown commit object");
3804         }
3805
3806         $searchtype ||= 'commit';
3807         if ($searchtype eq 'pickaxe') {
3808                 # pickaxe may take all resources of your box and run for several minutes
3809                 # with every query - so decide by yourself how public you make this feature
3810                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3811                 if (!$have_pickaxe) {
3812                         die_error('403 Permission denied', "Permission denied");
3813                 }
3814         }
3815
3816         git_header_html();
3817         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3818         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3819
3820         print "<table cellspacing=\"0\">\n";
3821         my $alternate = 1;
3822         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
3823                 $/ = "\0";
3824                 open my $fd, "-|", git_cmd(), "rev-list",
3825                         "--header", "--parents", $hash, "--"
3826                         or next;
3827                 while (my $commit_text = <$fd>) {
3828                         if (!grep m/$searchtext/i, $commit_text) {
3829                                 next;
3830                         }
3831                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3832                                 next;
3833                         }
3834                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3835                                 next;
3836                         }
3837                         my @commit_lines = split "\n", $commit_text;
3838                         my %co = parse_commit(undef, \@commit_lines);
3839                         if (!%co) {
3840                                 next;
3841                         }
3842                         if ($alternate) {
3843                                 print "<tr class=\"dark\">\n";
3844                         } else {
3845                                 print "<tr class=\"light\">\n";
3846                         }
3847                         $alternate ^= 1;
3848                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3849                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3850                               "<td>" .
3851                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3852                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3853                         my $comment = $co{'comment'};
3854                         foreach my $line (@$comment) {
3855                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3856                                         my $lead = esc_html($1) || "";
3857                                         $lead = chop_str($lead, 30, 10);
3858                                         my $match = esc_html($2) || "";
3859                                         my $trail = esc_html($3) || "";
3860                                         $trail = chop_str($trail, 30, 10);
3861                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3862                                         print chop_str($text, 80, 5) . "<br/>\n";
3863                                 }
3864                         }
3865                         print "</td>\n" .
3866                               "<td class=\"link\">" .
3867                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3868                               " | " .
3869                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3870                         print "</td>\n" .
3871                               "</tr>\n";
3872                 }
3873                 close $fd;
3874         }
3875
3876         if ($searchtype eq 'pickaxe') {
3877                 $/ = "\n";
3878                 my $git_command = git_cmd_str();
3879                 open my $fd, "-|", "$git_command rev-list $hash | " .
3880                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3881                 undef %co;
3882                 my @files;
3883                 while (my $line = <$fd>) {
3884                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3885                                 my %set;
3886                                 $set{'file'} = $6;
3887                                 $set{'from_id'} = $3;
3888                                 $set{'to_id'} = $4;
3889                                 $set{'id'} = $set{'to_id'};
3890                                 if ($set{'id'} =~ m/0{40}/) {
3891                                         $set{'id'} = $set{'from_id'};
3892                                 }
3893                                 if ($set{'id'} =~ m/0{40}/) {
3894                                         next;
3895                                 }
3896                                 push @files, \%set;
3897                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3898                                 if (%co) {
3899                                         if ($alternate) {
3900                                                 print "<tr class=\"dark\">\n";
3901                                         } else {
3902                                                 print "<tr class=\"light\">\n";
3903                                         }
3904                                         $alternate ^= 1;
3905                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3906                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3907                                               "<td>" .
3908                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3909                                                       -class => "list subject"},
3910                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3911                                         while (my $setref = shift @files) {
3912                                                 my %set = %$setref;
3913                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3914                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3915                                                               -class => "list"},
3916                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
3917                                                       "<br/>\n";
3918                                         }
3919                                         print "</td>\n" .
3920                                               "<td class=\"link\">" .
3921                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3922                                               " | " .
3923                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3924                                         print "</td>\n" .
3925                                               "</tr>\n";
3926                                 }
3927                                 %co = parse_commit($1);
3928                         }
3929                 }
3930                 close $fd;
3931         }
3932         print "</table>\n";
3933         git_footer_html();
3934 }
3935
3936 sub git_search_help {
3937         git_header_html();
3938         git_print_page_nav('','', $hash,$hash,$hash);
3939         print <<EOT;
3940 <dl>
3941 <dt><b>commit</b></dt>
3942 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
3943 <dt><b>author</b></dt>
3944 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
3945 <dt><b>committer</b></dt>
3946 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
3947 EOT
3948         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3949         if ($have_pickaxe) {
3950                 print <<EOT;
3951 <dt><b>pickaxe</b></dt>
3952 <dd>All commits that caused the string to appear or disappear from any file (changes that
3953 added, removed or "modified" the string) will be listed. This search can take a while and
3954 takes a lot of strain on the server, so please use it wisely.</dd>
3955 EOT
3956         }
3957         print "</dl>\n";
3958         git_footer_html();
3959 }
3960
3961 sub git_shortlog {
3962         my $head = git_get_head_hash($project);
3963         if (!defined $hash) {
3964                 $hash = $head;
3965         }
3966         if (!defined $page) {
3967                 $page = 0;
3968         }
3969         my $refs = git_get_references();
3970
3971         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3972         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3973                 or die_error(undef, "Open git-rev-list failed");
3974         my @revlist = map { chomp; $_ } <$fd>;
3975         close $fd;
3976
3977         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3978         my $next_link = '';
3979         if ($#revlist >= (100 * ($page+1)-1)) {
3980                 $next_link =
3981                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3982                                  -title => "Alt-n"}, "next");
3983         }
3984
3985
3986         git_header_html();
3987         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3988         git_print_header_div('summary', $project);
3989
3990         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3991
3992         git_footer_html();
3993 }
3994
3995 ## ......................................................................
3996 ## feeds (RSS, OPML)
3997
3998 sub git_rss {
3999         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4000         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
4001                 git_get_head_hash($project), "--"
4002                 or die_error(undef, "Open git-rev-list failed");
4003         my @revlist = map { chomp; $_ } <$fd>;
4004         close $fd or die_error(undef, "Reading git-rev-list failed");
4005         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4006         print <<XML;
4007 <?xml version="1.0" encoding="utf-8"?>
4008 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4009 <channel>
4010 <title>$project $my_uri $my_url</title>
4011 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
4012 <description>$project log</description>
4013 <language>en</language>
4014 XML
4015
4016         for (my $i = 0; $i <= $#revlist; $i++) {
4017                 my $commit = $revlist[$i];
4018                 my %co = parse_commit($commit);
4019                 # we read 150, we always show 30 and the ones more recent than 48 hours
4020                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
4021                         last;
4022                 }
4023                 my %cd = parse_date($co{'committer_epoch'});
4024                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4025                         $co{'parent'}, $co{'id'}, "--"
4026                         or next;
4027                 my @difftree = map { chomp; $_ } <$fd>;
4028                 close $fd
4029                         or next;
4030                 print "<item>\n" .
4031                       "<title>" .
4032                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
4033                       "</title>\n" .
4034                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
4035                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4036                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
4037                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
4038                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
4039                       "<content:encoded>" .
4040                       "<![CDATA[\n";
4041                 my $comment = $co{'comment'};
4042                 foreach my $line (@$comment) {
4043                         $line = to_utf8($line);
4044                         print "$line<br/>\n";
4045                 }
4046                 print "<br/>\n";
4047                 foreach my $line (@difftree) {
4048                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
4049                                 next;
4050                         }
4051                         my $file = esc_path(unquote($7));
4052                         $file = to_utf8($file);
4053                         print "$file<br/>\n";
4054                 }
4055                 print "]]>\n" .
4056                       "</content:encoded>\n" .
4057                       "</item>\n";
4058         }
4059         print "</channel></rss>";
4060 }
4061
4062 sub git_opml {
4063         my @list = git_get_projects_list();
4064
4065         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4066         print <<XML;
4067 <?xml version="1.0" encoding="utf-8"?>
4068 <opml version="1.0">
4069 <head>
4070   <title>$site_name OPML Export</title>
4071 </head>
4072 <body>
4073 <outline text="git RSS feeds">
4074 XML
4075
4076         foreach my $pr (@list) {
4077                 my %proj = %$pr;
4078                 my $head = git_get_head_hash($proj{'path'});
4079                 if (!defined $head) {
4080                         next;
4081                 }
4082                 $git_dir = "$projectroot/$proj{'path'}";
4083                 my %co = parse_commit($head);
4084                 if (!%co) {
4085                         next;
4086                 }
4087
4088                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4089                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4090                 my $html = "$my_url?p=$proj{'path'};a=summary";
4091                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4092         }
4093         print <<XML;
4094 </outline>
4095 </body>
4096 </opml>
4097 XML
4098 }