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 BEGIN {
  22         CGI->compile() if $ENV{'MOD_PERL'};
  23 }
  24
  25 our $cgi = new CGI;
  26 our $version = "++GIT_VERSION++";
  27 our $my_url = $cgi->url();
  28 our $my_uri = $cgi->url(-absolute => 1);
  29
  30 # core git executable to use
  31 # this can just be "git" if your webserver has a sensible PATH
  32 our $GIT = "++GIT_BINDIR++/git";
  33
  34 # absolute fs-path which will be prepended to the project path
  35 #our $projectroot = "/pub/scm";
  36 our $projectroot = "++GITWEB_PROJECTROOT++";
  37
  38 # target of the home link on top of all pages
  39 our $home_link = $my_uri || "/";
  40
  41 # string of the home link on top of all pages
  42 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  43
  44 # name of your site or organization to appear in page titles
  45 # replace this with something more descriptive for clearer bookmarks
  46 our $site_name = "++GITWEB_SITENAME++"
  47                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  48
  49 # filename of html text to include at top of each page
  50 our $site_header = "++GITWEB_SITE_HEADER++";
  51 # html text to include at home page
  52 our $home_text = "++GITWEB_HOMETEXT++";
  53 # filename of html text to include at bottom of each page
  54 our $site_footer = "++GITWEB_SITE_FOOTER++";
  55
  56 # URI of stylesheets
  57 our @stylesheets = ("++GITWEB_CSS++");
  58 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  59 our $stylesheet = undef;
  60 # URI of GIT logo (72x27 size)
  61 our $logo = "++GITWEB_LOGO++";
  62 # URI of GIT favicon, assumed to be image/png type
  63 our $favicon = "++GITWEB_FAVICON++";
  64
  65 # URI and label (title) of GIT logo link
  66 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  67 #our $logo_label = "git documentation";
  68 our $logo_url = "http://git.or.cz/";
  69 our $logo_label = "git homepage";
  70
  71 # source of projects list
  72 our $projects_list = "++GITWEB_LIST++";
  73
  74 # default order of projects list
  75 # valid values are none, project, descr, owner, and age
  76 our $default_projects_order = "project";
  77
  78 # show repository only if this file exists
  79 # (only effective if this variable evaluates to true)
  80 our $export_ok = "++GITWEB_EXPORT_OK++";
  81
  82 # only allow viewing of repositories also shown on the overview page
  83 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  84
  85 # list of git base URLs used for URL to where fetch project from,
  86 # i.e. full URL is "$git_base_url/$project"
  87 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  88
  89 # default blob_plain mimetype and default charset for text/plain blob
  90 our $default_blob_plain_mimetype = 'text/plain';
  91 our $default_text_plain_charset  = undef;
  92
  93 # file to use for guessing MIME types before trying /etc/mime.types
  94 # (relative to the current git repository)
  95 our $mimetypes_file = undef;
  96
  97 # You define site-wide feature defaults here; override them with
  98 # $GITWEB_CONFIG as necessary.
  99 our %feature = (
 100         # feature => {
 101         #       'sub' => feature-sub (subroutine),
 102         #       'override' => allow-override (boolean),
 103         #       'default' => [ default options...] (array reference)}
 104         #
 105         # if feature is overridable (it means that allow-override has true value,
 106         # then feature-sub will be called with default options as parameters;
 107         # return value of feature-sub indicates if to enable specified feature
 108         #
 109         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 110
 111         # Enable the 'blame' blob view, showing the last commit that modified
 112         # each line in the file. This can be very CPU-intensive.
 113
 114         # To enable system wide have in $GITWEB_CONFIG
 115         # $feature{'blame'}{'default'} = [1];
 116         # To have project specific config enable override in $GITWEB_CONFIG
 117         # $feature{'blame'}{'override'} = 1;
 118         # and in project config gitweb.blame = 0|1;
 119         'blame' => {
 120                 'sub' => \&feature_blame,
 121                 'override' => 0,
 122                 'default' => [0]},
 123
 124         # Enable the 'snapshot' link, providing a compressed tarball of any
 125         # tree. This can potentially generate high traffic if you have large
 126         # project.
 127
 128         # To disable system wide have in $GITWEB_CONFIG
 129         # $feature{'snapshot'}{'default'} = [undef];
 130         # To have project specific config enable override in $GITWEB_CONFIG
 131         # $feature{'snapshot'}{'override'} = 1;
 132         # and in project config gitweb.snapshot = none|gzip|bzip2;
 133         'snapshot' => {
 134                 'sub' => \&feature_snapshot,
 135                 'override' => 0,
 136                 #         => [content-encoding, suffix, program]
 137                 'default' => ['x-gzip', 'gz', 'gzip']},
 138
 139         # Enable text search, which will list the commits which match author,
 140         # committer or commit text to a given string.  Enabled by default.
 141         'search' => {
 142                 'override' => 0,
 143                 'default' => [1]},
 144
 145         # Enable the pickaxe search, which will list the commits that modified
 146         # a given string in a file. This can be practical and quite faster
 147         # alternative to 'blame', but still potentially CPU-intensive.
 148
 149         # To enable system wide have in $GITWEB_CONFIG
 150         # $feature{'pickaxe'}{'default'} = [1];
 151         # To have project specific config enable override in $GITWEB_CONFIG
 152         # $feature{'pickaxe'}{'override'} = 1;
 153         # and in project config gitweb.pickaxe = 0|1;
 154         'pickaxe' => {
 155                 'sub' => \&feature_pickaxe,
 156                 'override' => 0,
 157                 'default' => [1]},
 158
 159         # Make gitweb use an alternative format of the URLs which can be
 160         # more readable and natural-looking: project name is embedded
 161         # directly in the path and the query string contains other
 162         # auxiliary information. All gitweb installations recognize
 163         # URL in either format; this configures in which formats gitweb
 164         # generates links.
 165
 166         # To enable system wide have in $GITWEB_CONFIG
 167         # $feature{'pathinfo'}{'default'} = [1];
 168         # Project specific override is not supported.
 169
 170         # Note that you will need to change the default location of CSS,
 171         # favicon, logo and possibly other files to an absolute URL. Also,
 172         # if gitweb.cgi serves as your indexfile, you will need to force
 173         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 174         'pathinfo' => {
 175                 'override' => 0,
 176                 'default' => [0]},
 177
 178         # Make gitweb consider projects in project root subdirectories
 179         # to be forks of existing projects. Given project $projname.git,
 180         # projects matching $projname/*.git will not be shown in the main
 181         # projects list, instead a '+' mark will be added to $projname
 182         # there and a 'forks' view will be enabled for the project, listing
 183         # all the forks. If project list is taken from a file, forks have
 184         # to be listed after the main project.
 185
 186         # To enable system wide have in $GITWEB_CONFIG
 187         # $feature{'forks'}{'default'} = [1];
 188         # Project specific override is not supported.
 189         'forks' => {
 190                 'override' => 0,
 191                 'default' => [0]},
 192 );
 193
 194 sub gitweb_check_feature {
 195         my ($name) = @_;
 196         return unless exists $feature{$name};
 197         my ($sub, $override, @defaults) = (
 198                 $feature{$name}{'sub'},
 199                 $feature{$name}{'override'},
 200                 @{$feature{$name}{'default'}});
 201         if (!$override) { return @defaults; }
 202         if (!defined $sub) {
 203                 warn "feature $name is not overrideable";
 204                 return @defaults;
 205         }
 206         return $sub->(@defaults);
 207 }
 208
 209 sub feature_blame {
 210         my ($val) = git_get_project_config('blame', '--bool');
 211
 212         if ($val eq 'true') {
 213                 return 1;
 214         } elsif ($val eq 'false') {
 215                 return 0;
 216         }
 217
 218         return $_[0];
 219 }
 220
 221 sub feature_snapshot {
 222         my ($ctype, $suffix, $command) = @_;
 223
 224         my ($val) = git_get_project_config('snapshot');
 225
 226         if ($val eq 'gzip') {
 227                 return ('x-gzip', 'gz', 'gzip');
 228         } elsif ($val eq 'bzip2') {
 229                 return ('x-bzip2', 'bz2', 'bzip2');
 230         } elsif ($val eq 'none') {
 231                 return ();
 232         }
 233
 234         return ($ctype, $suffix, $command);
 235 }
 236
 237 sub gitweb_have_snapshot {
 238         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 239         my $have_snapshot = (defined $ctype && defined $suffix);
 240
 241         return $have_snapshot;
 242 }
 243
 244 sub feature_pickaxe {
 245         my ($val) = git_get_project_config('pickaxe', '--bool');
 246
 247         if ($val eq 'true') {
 248                 return (1);
 249         } elsif ($val eq 'false') {
 250                 return (0);
 251         }
 252
 253         return ($_[0]);
 254 }
 255
 256 # checking HEAD file with -e is fragile if the repository was
 257 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 258 # and then pruned.
 259 sub check_head_link {
 260         my ($dir) = @_;
 261         my $headfile = "$dir/HEAD";
 262         return ((-e $headfile) ||
 263                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 264 }
 265
 266 sub check_export_ok {
 267         my ($dir) = @_;
 268         return (check_head_link($dir) &&
 269                 (!$export_ok || -e "$dir/$export_ok"));
 270 }
 271
 272 # rename detection options for git-diff and git-diff-tree
 273 # - default is '-M', with the cost proportional to
 274 #   (number of removed files) * (number of new files).
 275 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 276 #   (number of changed files + number of removed files) * (number of new files)
 277 # - even more costly is '-C', '--find-copies-harder' with cost
 278 #   (number of files in the original tree) * (number of new files)
 279 # - one might want to include '-B' option, e.g. '-B', '-M'
 280 our @diff_opts = ('-M'); # taken from git_commit
 281
 282 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 283 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 284
 285 # version of the core git binary
 286 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 287
 288 $projects_list ||= $projectroot;
 289
 290 # ======================================================================
 291 # input validation and dispatch
 292 our $action = $cgi->param('a');
 293 if (defined $action) {
 294         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 295                 die_error(undef, "Invalid action parameter");
 296         }
 297 }
 298
 299 # parameters which are pathnames
 300 our $project = $cgi->param('p');
 301 if (defined $project) {
 302         if (!validate_pathname($project) ||
 303             !(-d "$projectroot/$project") ||
 304             !check_head_link("$projectroot/$project") ||
 305             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 306             ($strict_export && !project_in_list($project))) {
 307                 undef $project;
 308                 die_error(undef, "No such project");
 309         }
 310 }
 311
 312 our $file_name = $cgi->param('f');
 313 if (defined $file_name) {
 314         if (!validate_pathname($file_name)) {
 315                 die_error(undef, "Invalid file parameter");
 316         }
 317 }
 318
 319 our $file_parent = $cgi->param('fp');
 320 if (defined $file_parent) {
 321         if (!validate_pathname($file_parent)) {
 322                 die_error(undef, "Invalid file parent parameter");
 323         }
 324 }
 325
 326 # parameters which are refnames
 327 our $hash = $cgi->param('h');
 328 if (defined $hash) {
 329         if (!validate_refname($hash)) {
 330                 die_error(undef, "Invalid hash parameter");
 331         }
 332 }
 333
 334 our $hash_parent = $cgi->param('hp');
 335 if (defined $hash_parent) {
 336         if (!validate_refname($hash_parent)) {
 337                 die_error(undef, "Invalid hash parent parameter");
 338         }
 339 }
 340
 341 our $hash_base = $cgi->param('hb');
 342 if (defined $hash_base) {
 343         if (!validate_refname($hash_base)) {
 344                 die_error(undef, "Invalid hash base parameter");
 345         }
 346 }
 347
 348 our $hash_parent_base = $cgi->param('hpb');
 349 if (defined $hash_parent_base) {
 350         if (!validate_refname($hash_parent_base)) {
 351                 die_error(undef, "Invalid hash parent base parameter");
 352         }
 353 }
 354
 355 # other parameters
 356 our $page = $cgi->param('pg');
 357 if (defined $page) {
 358         if ($page =~ m/[^0-9]/) {
 359                 die_error(undef, "Invalid page parameter");
 360         }
 361 }
 362
 363 our $searchtext = $cgi->param('s');
 364 if (defined $searchtext) {
 365         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 366                 die_error(undef, "Invalid search parameter");
 367         }
 368         if (length($searchtext) < 2) {
 369                 die_error(undef, "At least two characters are required for search parameter");
 370         }
 371         $searchtext = quotemeta $searchtext;
 372 }
 373
 374 our $searchtype = $cgi->param('st');
 375 if (defined $searchtype) {
 376         if ($searchtype =~ m/[^a-z]/) {
 377                 die_error(undef, "Invalid searchtype parameter");
 378         }
 379 }
 380
 381 # now read PATH_INFO and use it as alternative to parameters
 382 sub evaluate_path_info {
 383         return if defined $project;
 384         my $path_info = $ENV{"PATH_INFO"};
 385         return if !$path_info;
 386         $path_info =~ s,^/+,,;
 387         return if !$path_info;
 388         # find which part of PATH_INFO is project
 389         $project = $path_info;
 390         $project =~ s,/+$,,;
 391         while ($project && !check_head_link("$projectroot/$project")) {
 392                 $project =~ s,/*[^/]*$,,;
 393         }
 394         # validate project
 395         $project = validate_pathname($project);
 396         if (!$project ||
 397             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 398             ($strict_export && !project_in_list($project))) {
 399                 undef $project;
 400                 return;
 401         }
 402         # do not change any parameters if an action is given using the query string
 403         return if $action;
 404         $path_info =~ s,^$project/*,,;
 405         my ($refname, $pathname) = split(/:/, $path_info, 2);
 406         if (defined $pathname) {
 407                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 408                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 409                 $pathname =~ s,^/+,,;
 410                 if (!$pathname || substr($pathname, -1) eq "/") {
 411                         $action  ||= "tree";
 412                         $pathname =~ s,/$,,;
 413                 } else {
 414                         $action  ||= "blob_plain";
 415                 }
 416                 $hash_base ||= validate_refname($refname);
 417                 $file_name ||= validate_pathname($pathname);
 418         } elsif (defined $refname) {
 419                 # we got "project.git/branch"
 420                 $action ||= "shortlog";
 421                 $hash   ||= validate_refname($refname);
 422         }
 423 }
 424 evaluate_path_info();
 425
 426 # path to the current git repository
 427 our $git_dir;
 428 $git_dir = "$projectroot/$project" if $project;
 429
 430 # dispatch
 431 my %actions = (
 432         "blame" => \&git_blame2,
 433         "blobdiff" => \&git_blobdiff,
 434         "blobdiff_plain" => \&git_blobdiff_plain,
 435         "blob" => \&git_blob,
 436         "blob_plain" => \&git_blob_plain,
 437         "commitdiff" => \&git_commitdiff,
 438         "commitdiff_plain" => \&git_commitdiff_plain,
 439         "commit" => \&git_commit,
 440         "forks" => \&git_forks,
 441         "heads" => \&git_heads,
 442         "history" => \&git_history,
 443         "log" => \&git_log,
 444         "rss" => \&git_rss,
 445         "atom" => \&git_atom,
 446         "search" => \&git_search,
 447         "search_help" => \&git_search_help,
 448         "shortlog" => \&git_shortlog,
 449         "summary" => \&git_summary,
 450         "tag" => \&git_tag,
 451         "tags" => \&git_tags,
 452         "tree" => \&git_tree,
 453         "snapshot" => \&git_snapshot,
 454         "object" => \&git_object,
 455         # those below don't need $project
 456         "opml" => \&git_opml,
 457         "project_list" => \&git_project_list,
 458         "project_index" => \&git_project_index,
 459 );
 460
 461 if (defined $project) {
 462         $action ||= 'summary';
 463 } else {
 464         $action ||= 'project_list';
 465 }
 466 if (!defined($actions{$action})) {
 467         die_error(undef, "Unknown action");
 468 }
 469 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 470     !$project) {
 471         die_error(undef, "Project needed");
 472 }
 473 $actions{$action}->();
 474 exit;
 475
 476 ## ======================================================================
 477 ## action links
 478
 479 sub href(%) {
 480         my %params = @_;
 481         # default is to use -absolute url() i.e. $my_uri
 482         my $href = $params{-full} ? $my_url : $my_uri;
 483
 484         # XXX: Warning: If you touch this, check the search form for updating,
 485         # too.
 486
 487         my @mapping = (
 488                 project => "p",
 489                 action => "a",
 490                 file_name => "f",
 491                 file_parent => "fp",
 492                 hash => "h",
 493                 hash_parent => "hp",
 494                 hash_base => "hb",
 495                 hash_parent_base => "hpb",
 496                 page => "pg",
 497                 order => "o",
 498                 searchtext => "s",
 499                 searchtype => "st",
 500         );
 501         my %mapping = @mapping;
 502
 503         $params{'project'} = $project unless exists $params{'project'};
 504
 505         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 506         if ($use_pathinfo) {
 507                 # use PATH_INFO for project name
 508                 $href .= "/$params{'project'}" if defined $params{'project'};
 509                 delete $params{'project'};
 510
 511                 # Summary just uses the project path URL
 512                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 513                         delete $params{'action'};
 514                 }
 515         }
 516
 517         # now encode the parameters explicitly
 518         my @result = ();
 519         for (my $i = 0; $i < @mapping; $i += 2) {
 520                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 521                 if (defined $params{$name}) {
 522                         push @result, $symbol . "=" . esc_param($params{$name});
 523                 }
 524         }
 525         $href .= "?" . join(';', @result) if scalar @result;
 526
 527         return $href;
 528 }
 529
 530
 531 ## ======================================================================
 532 ## validation, quoting/unquoting and escaping
 533
 534 sub validate_pathname {
 535         my $input = shift || return undef;
 536
 537         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 538         # at the beginning, at the end, and between slashes.
 539         # also this catches doubled slashes
 540         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 541                 return undef;
 542         }
 543         # no null characters
 544         if ($input =~ m!\0!) {
 545                 return undef;
 546         }
 547         return $input;
 548 }
 549
 550 sub validate_refname {
 551         my $input = shift || return undef;
 552
 553         # textual hashes are O.K.
 554         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 555                 return $input;
 556         }
 557         # it must be correct pathname
 558         $input = validate_pathname($input)
 559                 or return undef;
 560         # restrictions on ref name according to git-check-ref-format
 561         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 562                 return undef;
 563         }
 564         return $input;
 565 }
 566
 567 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 568 sub to_utf8 {
 569         my $str = shift;
 570         return decode("utf8", $str, Encode::FB_DEFAULT);
 571 }
 572
 573 # quote unsafe chars, but keep the slash, even when it's not
 574 # correct, but quoted slashes look too horrible in bookmarks
 575 sub esc_param {
 576         my $str = shift;
 577         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 578         $str =~ s/\+/%2B/g;
 579         $str =~ s/ /\+/g;
 580         return $str;
 581 }
 582
 583 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 584 sub esc_url {
 585         my $str = shift;
 586         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 587         $str =~ s/\+/%2B/g;
 588         $str =~ s/ /\+/g;
 589         return $str;
 590 }
 591
 592 # replace invalid utf8 character with SUBSTITUTION sequence
 593 sub esc_html ($;%) {
 594         my $str = shift;
 595         my %opts = @_;
 596
 597         $str = to_utf8($str);
 598         $str = $cgi->escapeHTML($str);
 599         if ($opts{'-nbsp'}) {
 600                 $str =~ s/ /&nbsp;/g;
 601         }
 602         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 603         return $str;
 604 }
 605
 606 # quote control characters and escape filename to HTML
 607 sub esc_path {
 608         my $str = shift;
 609         my %opts = @_;
 610
 611         $str = to_utf8($str);
 612         $str = $cgi->escapeHTML($str);
 613         if ($opts{'-nbsp'}) {
 614                 $str =~ s/ /&nbsp;/g;
 615         }
 616         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 617         return $str;
 618 }
 619
 620 # Make control characters "printable", using character escape codes (CEC)
 621 sub quot_cec {
 622         my $cntrl = shift;
 623         my %es = ( # character escape codes, aka escape sequences
 624                    "\t" => '\t',   # tab            (HT)
 625                    "\n" => '\n',   # line feed      (LF)
 626                    "\r" => '\r',   # carrige return (CR)
 627                    "\f" => '\f',   # form feed      (FF)
 628                    "\b" => '\b',   # backspace      (BS)
 629                    "\a" => '\a',   # alarm (bell)   (BEL)
 630                    "\e" => '\e',   # escape         (ESC)
 631                    "\013" => '\v', # vertical tab   (VT)
 632                    "\000" => '\0', # nul character  (NUL)
 633                    );
 634         my $chr = ( (exists $es{$cntrl})
 635                     ? $es{$cntrl}
 636                     : sprintf('\%03o', ord($cntrl)) );
 637         return "<span class=\"cntrl\">$chr</span>";
 638 }
 639
 640 # Alternatively use unicode control pictures codepoints,
 641 # Unicode "printable representation" (PR)
 642 sub quot_upr {
 643         my $cntrl = shift;
 644         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 645         return "<span class=\"cntrl\">$chr</span>";
 646 }
 647
 648 # git may return quoted and escaped filenames
 649 sub unquote {
 650         my $str = shift;
 651
 652         sub unq {
 653                 my $seq = shift;
 654                 my %es = ( # character escape codes, aka escape sequences
 655                         't' => "\t",   # tab            (HT, TAB)
 656                         'n' => "\n",   # newline        (NL)
 657                         'r' => "\r",   # return         (CR)
 658                         'f' => "\f",   # form feed      (FF)
 659                         'b' => "\b",   # backspace      (BS)
 660                         'a' => "\a",   # alarm (bell)   (BEL)
 661                         'e' => "\e",   # escape         (ESC)
 662                         'v' => "\013", # vertical tab   (VT)
 663                 );
 664
 665                 if ($seq =~ m/^[0-7]{1,3}$/) {
 666                         # octal char sequence
 667                         return chr(oct($seq));
 668                 } elsif (exists $es{$seq}) {
 669                         # C escape sequence, aka character escape code
 670                         return $es{$seq}
 671                 }
 672                 # quoted ordinary character
 673                 return $seq;
 674         }
 675
 676         if ($str =~ m/^"(.*)"$/) {
 677                 # needs unquoting
 678                 $str = $1;
 679                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 680         }
 681         return $str;
 682 }
 683
 684 # escape tabs (convert tabs to spaces)
 685 sub untabify {
 686         my $line = shift;
 687
 688         while ((my $pos = index($line, "\t")) != -1) {
 689                 if (my $count = (8 - ($pos % 8))) {
 690                         my $spaces = ' ' x $count;
 691                         $line =~ s/\t/$spaces/;
 692                 }
 693         }
 694
 695         return $line;
 696 }
 697
 698 sub project_in_list {
 699         my $project = shift;
 700         my @list = git_get_projects_list();
 701         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 702 }
 703
 704 ## ----------------------------------------------------------------------
 705 ## HTML aware string manipulation
 706
 707 sub chop_str {
 708         my $str = shift;
 709         my $len = shift;
 710         my $add_len = shift || 10;
 711
 712         # allow only $len chars, but don't cut a word if it would fit in $add_len
 713         # if it doesn't fit, cut it if it's still longer than the dots we would add
 714         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 715         my $body = $1;
 716         my $tail = $2;
 717         if (length($tail) > 4) {
 718                 $tail = " ...";
 719                 $body =~ s/&[^;]*$//; # remove chopped character entities
 720         }
 721         return "$body$tail";
 722 }
 723
 724 ## ----------------------------------------------------------------------
 725 ## functions returning short strings
 726
 727 # CSS class for given age value (in seconds)
 728 sub age_class {
 729         my $age = shift;
 730
 731         if ($age < 60*60*2) {
 732                 return "age0";
 733         } elsif ($age < 60*60*24*2) {
 734                 return "age1";
 735         } else {
 736                 return "age2";
 737         }
 738 }
 739
 740 # convert age in seconds to "nn units ago" string
 741 sub age_string {
 742         my $age = shift;
 743         my $age_str;
 744
 745         if ($age > 60*60*24*365*2) {
 746                 $age_str = (int $age/60/60/24/365);
 747                 $age_str .= " years ago";
 748         } elsif ($age > 60*60*24*(365/12)*2) {
 749                 $age_str = int $age/60/60/24/(365/12);
 750                 $age_str .= " months ago";
 751         } elsif ($age > 60*60*24*7*2) {
 752                 $age_str = int $age/60/60/24/7;
 753                 $age_str .= " weeks ago";
 754         } elsif ($age > 60*60*24*2) {
 755                 $age_str = int $age/60/60/24;
 756                 $age_str .= " days ago";
 757         } elsif ($age > 60*60*2) {
 758                 $age_str = int $age/60/60;
 759                 $age_str .= " hours ago";
 760         } elsif ($age > 60*2) {
 761                 $age_str = int $age/60;
 762                 $age_str .= " min ago";
 763         } elsif ($age > 2) {
 764                 $age_str = int $age;
 765                 $age_str .= " sec ago";
 766         } else {
 767                 $age_str .= " right now";
 768         }
 769         return $age_str;
 770 }
 771
 772 # convert file mode in octal to symbolic file mode string
 773 sub mode_str {
 774         my $mode = oct shift;
 775
 776         if (S_ISDIR($mode & S_IFMT)) {
 777                 return 'drwxr-xr-x';
 778         } elsif (S_ISLNK($mode)) {
 779                 return 'lrwxrwxrwx';
 780         } elsif (S_ISREG($mode)) {
 781                 # git cares only about the executable bit
 782                 if ($mode & S_IXUSR) {
 783                         return '-rwxr-xr-x';
 784                 } else {
 785                         return '-rw-r--r--';
 786                 };
 787         } else {
 788                 return '----------';
 789         }
 790 }
 791
 792 # convert file mode in octal to file type string
 793 sub file_type {
 794         my $mode = shift;
 795
 796         if ($mode !~ m/^[0-7]+$/) {
 797                 return $mode;
 798         } else {
 799                 $mode = oct $mode;
 800         }
 801
 802         if (S_ISDIR($mode & S_IFMT)) {
 803                 return "directory";
 804         } elsif (S_ISLNK($mode)) {
 805                 return "symlink";
 806         } elsif (S_ISREG($mode)) {
 807                 return "file";
 808         } else {
 809                 return "unknown";
 810         }
 811 }
 812
 813 # convert file mode in octal to file type description string
 814 sub file_type_long {
 815         my $mode = shift;
 816
 817         if ($mode !~ m/^[0-7]+$/) {
 818                 return $mode;
 819         } else {
 820                 $mode = oct $mode;
 821         }
 822
 823         if (S_ISDIR($mode & S_IFMT)) {
 824                 return "directory";
 825         } elsif (S_ISLNK($mode)) {
 826                 return "symlink";
 827         } elsif (S_ISREG($mode)) {
 828                 if ($mode & S_IXUSR) {
 829                         return "executable";
 830                 } else {
 831                         return "file";
 832                 };
 833         } else {
 834                 return "unknown";
 835         }
 836 }
 837
 838
 839 ## ----------------------------------------------------------------------
 840 ## functions returning short HTML fragments, or transforming HTML fragments
 841 ## which don't belong to other sections
 842
 843 # format line of commit message.
 844 sub format_log_line_html {
 845         my $line = shift;
 846
 847         $line = esc_html($line, -nbsp=>1);
 848         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 849                 my $hash_text = $1;
 850                 my $link =
 851                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 852                                 -class => "text"}, $hash_text);
 853                 $line =~ s/$hash_text/$link/;
 854         }
 855         return $line;
 856 }
 857
 858 # format marker of refs pointing to given object
 859 sub format_ref_marker {
 860         my ($refs, $id) = @_;
 861         my $markers = '';
 862
 863         if (defined $refs->{$id}) {
 864                 foreach my $ref (@{$refs->{$id}}) {
 865                         my ($type, $name) = qw();
 866                         # e.g. tags/v2.6.11 or heads/next
 867                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 868                                 $type = $1;
 869                                 $name = $2;
 870                         } else {
 871                                 $type = "ref";
 872                                 $name = $ref;
 873                         }
 874
 875                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 876                                     esc_html($name) . "</span>";
 877                 }
 878         }
 879
 880         if ($markers) {
 881                 return ' <span class="refs">'. $markers . '</span>';
 882         } else {
 883                 return "";
 884         }
 885 }
 886
 887 # format, perhaps shortened and with markers, title line
 888 sub format_subject_html {
 889         my ($long, $short, $href, $extra) = @_;
 890         $extra = '' unless defined($extra);
 891
 892         if (length($short) < length($long)) {
 893                 return $cgi->a({-href => $href, -class => "list subject",
 894                                 -title => to_utf8($long)},
 895                        esc_html($short) . $extra);
 896         } else {
 897                 return $cgi->a({-href => $href, -class => "list subject"},
 898                        esc_html($long)  . $extra);
 899         }
 900 }
 901
 902 # format patch (diff) line (rather not to be used for diff headers)
 903 sub format_diff_line {
 904         my $line = shift;
 905         my ($from, $to) = @_;
 906         my $char = substr($line, 0, 1);
 907         my $diff_class = "";
 908
 909         chomp $line;
 910
 911         if ($char eq '+') {
 912                 $diff_class = " add";
 913         } elsif ($char eq "-") {
 914                 $diff_class = " rem";
 915         } elsif ($char eq "@") {
 916                 $diff_class = " chunk_header";
 917         } elsif ($char eq "\\") {
 918                 $diff_class = " incomplete";
 919         }
 920         $line = untabify($line);
 921         if ($from && $to && $line =~ m/^\@{2} /) {
 922                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 923                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 924
 925                 $from_lines = 0 unless defined $from_lines;
 926                 $to_lines   = 0 unless defined $to_lines;
 927
 928                 if ($from->{'href'}) {
 929                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 930                                              -class=>"list"}, $from_text);
 931                 }
 932                 if ($to->{'href'}) {
 933                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 934                                              -class=>"list"}, $to_text);
 935                 }
 936                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 937                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 938                 return "<div class=\"diff$diff_class\">$line</div>\n";
 939         }
 940         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 941 }
 942
 943 ## ----------------------------------------------------------------------
 944 ## git utility subroutines, invoking git commands
 945
 946 # returns path to the core git executable and the --git-dir parameter as list
 947 sub git_cmd {
 948         return $GIT, '--git-dir='.$git_dir;
 949 }
 950
 951 # returns path to the core git executable and the --git-dir parameter as string
 952 sub git_cmd_str {
 953         return join(' ', git_cmd());
 954 }
 955
 956 # get HEAD ref of given project as hash
 957 sub git_get_head_hash {
 958         my $project = shift;
 959         my $o_git_dir = $git_dir;
 960         my $retval = undef;
 961         $git_dir = "$projectroot/$project";
 962         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 963                 my $head = <$fd>;
 964                 close $fd;
 965                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 966                         $retval = $1;
 967                 }
 968         }
 969         if (defined $o_git_dir) {
 970                 $git_dir = $o_git_dir;
 971         }
 972         return $retval;
 973 }
 974
 975 # get type of given object
 976 sub git_get_type {
 977         my $hash = shift;
 978
 979         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 980         my $type = <$fd>;
 981         close $fd or return;
 982         chomp $type;
 983         return $type;
 984 }
 985
 986 sub git_get_project_config {
 987         my ($key, $type) = @_;
 988
 989         return unless ($key);
 990         $key =~ s/^gitweb\.//;
 991         return if ($key =~ m/\W/);
 992
 993         my @x = (git_cmd(), 'config');
 994         if (defined $type) { push @x, $type; }
 995         push @x, "--get";
 996         push @x, "gitweb.$key";
 997         my $val = qx(@x);
 998         chomp $val;
 999         return ($val);
1000 }
1001
1002 # get hash of given path at given ref
1003 sub git_get_hash_by_path {
1004         my $base = shift;
1005         my $path = shift || return undef;
1006         my $type = shift;
1007
1008         $path =~ s,/+$,,;
1009
1010         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1011                 or die_error(undef, "Open git-ls-tree failed");
1012         my $line = <$fd>;
1013         close $fd or return undef;
1014
1015         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1016         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1017         if (defined $type && $type ne $2) {
1018                 # type doesn't match
1019                 return undef;
1020         }
1021         return $3;
1022 }
1023
1024 ## ......................................................................
1025 ## git utility functions, directly accessing git repository
1026
1027 sub git_get_project_description {
1028         my $path = shift;
1029
1030         open my $fd, "$projectroot/$path/description" or return undef;
1031         my $descr = <$fd>;
1032         close $fd;
1033         chomp $descr;
1034         return $descr;
1035 }
1036
1037 sub git_get_project_url_list {
1038         my $path = shift;
1039
1040         open my $fd, "$projectroot/$path/cloneurl" or return;
1041         my @git_project_url_list = map { chomp; $_ } <$fd>;
1042         close $fd;
1043
1044         return wantarray ? @git_project_url_list : \@git_project_url_list;
1045 }
1046
1047 sub git_get_projects_list {
1048         my ($filter) = @_;
1049         my @list;
1050
1051         $filter ||= '';
1052         $filter =~ s/\.git$//;
1053
1054         my ($check_forks) = gitweb_check_feature('forks');
1055
1056         if (-d $projects_list) {
1057                 # search in directory
1058                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1059                 # remove the trailing "/"
1060                 $dir =~ s!/+$!!;
1061                 my $pfxlen = length("$dir");
1062
1063                 File::Find::find({
1064                         follow_fast => 1, # follow symbolic links
1065                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1066                         wanted => sub {
1067                                 # skip project-list toplevel, if we get it.
1068                                 return if (m!^[/.]$!);
1069                                 # only directories can be git repositories
1070                                 return unless (-d $_);
1071
1072                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1073                                 # we check related file in $projectroot
1074                                 if ($check_forks and $subdir =~ m#/.#) {
1075                                         $File::Find::prune = 1;
1076                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1077                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1078                                         $File::Find::prune = 1;
1079                                 }
1080                         },
1081                 }, "$dir");
1082
1083         } elsif (-f $projects_list) {
1084                 # read from file(url-encoded):
1085                 # 'git%2Fgit.git Linus+Torvalds'
1086                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1087                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1088                 my %paths;
1089                 open my ($fd), $projects_list or return;
1090         PROJECT:
1091                 while (my $line = <$fd>) {
1092                         chomp $line;
1093                         my ($path, $owner) = split ' ', $line;
1094                         $path = unescape($path);
1095                         $owner = unescape($owner);
1096                         if (!defined $path) {
1097                                 next;
1098                         }
1099                         if ($filter ne '') {
1100                                 # looking for forks;
1101                                 my $pfx = substr($path, 0, length($filter));
1102                                 if ($pfx ne $filter) {
1103                                         next PROJECT;
1104                                 }
1105                                 my $sfx = substr($path, length($filter));
1106                                 if ($sfx !~ /^\/.*\.git$/) {
1107                                         next PROJECT;
1108                                 }
1109                         } elsif ($check_forks) {
1110                         PATH:
1111                                 foreach my $filter (keys %paths) {
1112                                         # looking for forks;
1113                                         my $pfx = substr($path, 0, length($filter));
1114                                         if ($pfx ne $filter) {
1115                                                 next PATH;
1116                                         }
1117                                         my $sfx = substr($path, length($filter));
1118                                         if ($sfx !~ /^\/.*\.git$/) {
1119                                                 next PATH;
1120                                         }
1121                                         # is a fork, don't include it in
1122                                         # the list
1123                                         next PROJECT;
1124                                 }
1125                         }
1126                         if (check_export_ok("$projectroot/$path")) {
1127                                 my $pr = {
1128                                         path => $path,
1129                                         owner => to_utf8($owner),
1130                                 };
1131                                 push @list, $pr;
1132                                 (my $forks_path = $path) =~ s/\.git$//;
1133                                 $paths{$forks_path}++;
1134                         }
1135                 }
1136                 close $fd;
1137         }
1138         return @list;
1139 }
1140
1141 sub git_get_project_owner {
1142         my $project = shift;
1143         my $owner;
1144
1145         return undef unless $project;
1146
1147         # read from file (url-encoded):
1148         # 'git%2Fgit.git Linus+Torvalds'
1149         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1150         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1151         if (-f $projects_list) {
1152                 open (my $fd , $projects_list);
1153                 while (my $line = <$fd>) {
1154                         chomp $line;
1155                         my ($pr, $ow) = split ' ', $line;
1156                         $pr = unescape($pr);
1157                         $ow = unescape($ow);
1158                         if ($pr eq $project) {
1159                                 $owner = to_utf8($ow);
1160                                 last;
1161                         }
1162                 }
1163                 close $fd;
1164         }
1165         if (!defined $owner) {
1166                 $owner = get_file_owner("$projectroot/$project");
1167         }
1168
1169         return $owner;
1170 }
1171
1172 sub git_get_last_activity {
1173         my ($path) = @_;
1174         my $fd;
1175
1176         $git_dir = "$projectroot/$path";
1177         open($fd, "-|", git_cmd(), 'for-each-ref',
1178              '--format=%(committer)',
1179              '--sort=-committerdate',
1180              '--count=1',
1181              'refs/heads') or return;
1182         my $most_recent = <$fd>;
1183         close $fd or return;
1184         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1185                 my $timestamp = $1;
1186                 my $age = time - $timestamp;
1187                 return ($age, age_string($age));
1188         }
1189 }
1190
1191 sub git_get_references {
1192         my $type = shift || "";
1193         my %refs;
1194         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1195         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1196         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1197                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1198                 or return;
1199
1200         while (my $line = <$fd>) {
1201                 chomp $line;
1202                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1203                         if (defined $refs{$1}) {
1204                                 push @{$refs{$1}}, $2;
1205                         } else {
1206                                 $refs{$1} = [ $2 ];
1207                         }
1208                 }
1209         }
1210         close $fd or return;
1211         return \%refs;
1212 }
1213
1214 sub git_get_rev_name_tags {
1215         my $hash = shift || return undef;
1216
1217         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1218                 or return;
1219         my $name_rev = <$fd>;
1220         close $fd;
1221
1222         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1223                 return $1;
1224         } else {
1225                 # catches also '$hash undefined' output
1226                 return undef;
1227         }
1228 }
1229
1230 ## ----------------------------------------------------------------------
1231 ## parse to hash functions
1232
1233 sub parse_date {
1234         my $epoch = shift;
1235         my $tz = shift || "-0000";
1236
1237         my %date;
1238         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1239         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1240         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1241         $date{'hour'} = $hour;
1242         $date{'minute'} = $min;
1243         $date{'mday'} = $mday;
1244         $date{'day'} = $days[$wday];
1245         $date{'month'} = $months[$mon];
1246         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1247                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1248         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1249                              $mday, $months[$mon], $hour ,$min;
1250         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1251                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1252
1253         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1254         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1255         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1256         $date{'hour_local'} = $hour;
1257         $date{'minute_local'} = $min;
1258         $date{'tz_local'} = $tz;
1259         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1260                                   1900+$year, $mon+1, $mday,
1261                                   $hour, $min, $sec, $tz);
1262         return %date;
1263 }
1264
1265 sub parse_tag {
1266         my $tag_id = shift;
1267         my %tag;
1268         my @comment;
1269
1270         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1271         $tag{'id'} = $tag_id;
1272         while (my $line = <$fd>) {
1273                 chomp $line;
1274                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1275                         $tag{'object'} = $1;
1276                 } elsif ($line =~ m/^type (.+)$/) {
1277                         $tag{'type'} = $1;
1278                 } elsif ($line =~ m/^tag (.+)$/) {
1279                         $tag{'name'} = $1;
1280                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1281                         $tag{'author'} = $1;
1282                         $tag{'epoch'} = $2;
1283                         $tag{'tz'} = $3;
1284                 } elsif ($line =~ m/--BEGIN/) {
1285                         push @comment, $line;
1286                         last;
1287                 } elsif ($line eq "") {
1288                         last;
1289                 }
1290         }
1291         push @comment, <$fd>;
1292         $tag{'comment'} = \@comment;
1293         close $fd or return;
1294         if (!defined $tag{'name'}) {
1295                 return
1296         };
1297         return %tag
1298 }
1299
1300 sub parse_commit_text {
1301         my ($commit_text, $withparents) = @_;
1302         my @commit_lines = split '\n', $commit_text;
1303         my %co;
1304
1305         pop @commit_lines; # Remove '\0'
1306
1307         my $header = shift @commit_lines;
1308         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1309                 return;
1310         }
1311         ($co{'id'}, my @parents) = split ' ', $header;
1312         while (my $line = shift @commit_lines) {
1313                 last if $line eq "\n";
1314                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1315                         $co{'tree'} = $1;
1316                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1317                         push @parents, $1;
1318                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1319                         $co{'author'} = $1;
1320                         $co{'author_epoch'} = $2;
1321                         $co{'author_tz'} = $3;
1322                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1323                                 $co{'author_name'}  = $1;
1324                                 $co{'author_email'} = $2;
1325                         } else {
1326                                 $co{'author_name'} = $co{'author'};
1327                         }
1328                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1329                         $co{'committer'} = $1;
1330                         $co{'committer_epoch'} = $2;
1331                         $co{'committer_tz'} = $3;
1332                         $co{'committer_name'} = $co{'committer'};
1333                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1334                                 $co{'committer_name'}  = $1;
1335                                 $co{'committer_email'} = $2;
1336                         } else {
1337                                 $co{'committer_name'} = $co{'committer'};
1338                         }
1339                 }
1340         }
1341         if (!defined $co{'tree'}) {
1342                 return;
1343         };
1344         $co{'parents'} = \@parents;
1345         $co{'parent'} = $parents[0];
1346
1347         foreach my $title (@commit_lines) {
1348                 $title =~ s/^    //;
1349                 if ($title ne "") {
1350                         $co{'title'} = chop_str($title, 80, 5);
1351                         # remove leading stuff of merges to make the interesting part visible
1352                         if (length($title) > 50) {
1353                                 $title =~ s/^Automatic //;
1354                                 $title =~ s/^merge (of|with) /Merge ... /i;
1355                                 if (length($title) > 50) {
1356                                         $title =~ s/(http|rsync):\/\///;
1357                                 }
1358                                 if (length($title) > 50) {
1359                                         $title =~ s/(master|www|rsync)\.//;
1360                                 }
1361                                 if (length($title) > 50) {
1362                                         $title =~ s/kernel.org:?//;
1363                                 }
1364                                 if (length($title) > 50) {
1365                                         $title =~ s/\/pub\/scm//;
1366                                 }
1367                         }
1368                         $co{'title_short'} = chop_str($title, 50, 5);
1369                         last;
1370                 }
1371         }
1372         if ($co{'title'} eq "") {
1373                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1374         }
1375         # remove added spaces
1376         foreach my $line (@commit_lines) {
1377                 $line =~ s/^    //;
1378         }
1379         $co{'comment'} = \@commit_lines;
1380
1381         my $age = time - $co{'committer_epoch'};
1382         $co{'age'} = $age;
1383         $co{'age_string'} = age_string($age);
1384         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1385         if ($age > 60*60*24*7*2) {
1386                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1387                 $co{'age_string_age'} = $co{'age_string'};
1388         } else {
1389                 $co{'age_string_date'} = $co{'age_string'};
1390                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1391         }
1392         return %co;
1393 }
1394
1395 sub parse_commit {
1396         my ($commit_id) = @_;
1397         my %co;
1398
1399         local $/ = "\0";
1400
1401         open my $fd, "-|", git_cmd(), "rev-list",
1402                 "--parents",
1403                 "--header",
1404                 "--max-count=1",
1405                 $commit_id,
1406                 "--",
1407                 or die_error(undef, "Open git-rev-list failed");
1408         %co = parse_commit_text(<$fd>, 1);
1409         close $fd;
1410
1411         return %co;
1412 }
1413
1414 sub parse_commits {
1415         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1416         my @cos;
1417
1418         $maxcount ||= 1;
1419         $skip ||= 0;
1420
1421         local $/ = "\0";
1422
1423         open my $fd, "-|", git_cmd(), "rev-list",
1424                 "--header",
1425                 ($arg ? ($arg) : ()),
1426                 ("--max-count=" . $maxcount),
1427                 ("--skip=" . $skip),
1428                 $commit_id,
1429                 "--",
1430                 ($filename ? ($filename) : ())
1431                 or die_error(undef, "Open git-rev-list failed");
1432         while (my $line = <$fd>) {
1433                 my %co = parse_commit_text($line);
1434                 push @cos, \%co;
1435         }
1436         close $fd;
1437
1438         return wantarray ? @cos : \@cos;
1439 }
1440
1441 # parse ref from ref_file, given by ref_id, with given type
1442 sub parse_ref {
1443         my $ref_file = shift;
1444         my $ref_id = shift;
1445         my $type = shift || git_get_type($ref_id);
1446         my %ref_item;
1447
1448         $ref_item{'type'} = $type;
1449         $ref_item{'id'} = $ref_id;
1450         $ref_item{'epoch'} = 0;
1451         $ref_item{'age'} = "unknown";
1452         if ($type eq "tag") {
1453                 my %tag = parse_tag($ref_id);
1454                 $ref_item{'comment'} = $tag{'comment'};
1455                 if ($tag{'type'} eq "commit") {
1456                         my %co = parse_commit($tag{'object'});
1457                         $ref_item{'epoch'} = $co{'committer_epoch'};
1458                         $ref_item{'age'} = $co{'age_string'};
1459                 } elsif (defined($tag{'epoch'})) {
1460                         my $age = time - $tag{'epoch'};
1461                         $ref_item{'epoch'} = $tag{'epoch'};
1462                         $ref_item{'age'} = age_string($age);
1463                 }
1464                 $ref_item{'reftype'} = $tag{'type'};
1465                 $ref_item{'name'} = $tag{'name'};
1466                 $ref_item{'refid'} = $tag{'object'};
1467         } elsif ($type eq "commit"){
1468                 my %co = parse_commit($ref_id);
1469                 $ref_item{'reftype'} = "commit";
1470                 $ref_item{'name'} = $ref_file;
1471                 $ref_item{'title'} = $co{'title'};
1472                 $ref_item{'refid'} = $ref_id;
1473                 $ref_item{'epoch'} = $co{'committer_epoch'};
1474                 $ref_item{'age'} = $co{'age_string'};
1475         } else {
1476                 $ref_item{'reftype'} = $type;
1477                 $ref_item{'name'} = $ref_file;
1478                 $ref_item{'refid'} = $ref_id;
1479         }
1480
1481         return %ref_item;
1482 }
1483
1484 # parse line of git-diff-tree "raw" output
1485 sub parse_difftree_raw_line {
1486         my $line = shift;
1487         my %res;
1488
1489         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1490         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1491         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1492                 $res{'from_mode'} = $1;
1493                 $res{'to_mode'} = $2;
1494                 $res{'from_id'} = $3;
1495                 $res{'to_id'} = $4;
1496                 $res{'status'} = $5;
1497                 $res{'similarity'} = $6;
1498                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1499                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1500                 } else {
1501                         $res{'file'} = unquote($7);
1502                 }
1503         }
1504         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1505         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1506                 $res{'commit'} = $1;
1507         }
1508
1509         return wantarray ? %res : \%res;
1510 }
1511
1512 # parse line of git-ls-tree output
1513 sub parse_ls_tree_line ($;%) {
1514         my $line = shift;
1515         my %opts = @_;
1516         my %res;
1517
1518         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1519         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1520
1521         $res{'mode'} = $1;
1522         $res{'type'} = $2;
1523         $res{'hash'} = $3;
1524         if ($opts{'-z'}) {
1525                 $res{'name'} = $4;
1526         } else {
1527                 $res{'name'} = unquote($4);
1528         }
1529
1530         return wantarray ? %res : \%res;
1531 }
1532
1533 ## ......................................................................
1534 ## parse to array of hashes functions
1535
1536 sub git_get_heads_list {
1537         my $limit = shift;
1538         my @headslist;
1539
1540         open my $fd, '-|', git_cmd(), 'for-each-ref',
1541                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1542                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1543                 'refs/heads'
1544                 or return;
1545         while (my $line = <$fd>) {
1546                 my %ref_item;
1547
1548                 chomp $line;
1549                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1550                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1551                 my ($committer, $epoch, $tz) =
1552                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1553                 $name =~ s!^refs/heads/!!;
1554
1555                 $ref_item{'name'}  = $name;
1556                 $ref_item{'id'}    = $hash;
1557                 $ref_item{'title'} = $title || '(no commit message)';
1558                 $ref_item{'epoch'} = $epoch;
1559                 if ($epoch) {
1560                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1561                 } else {
1562                         $ref_item{'age'} = "unknown";
1563                 }
1564
1565                 push @headslist, \%ref_item;
1566         }
1567         close $fd;
1568
1569         return wantarray ? @headslist : \@headslist;
1570 }
1571
1572 sub git_get_tags_list {
1573         my $limit = shift;
1574         my @tagslist;
1575
1576         open my $fd, '-|', git_cmd(), 'for-each-ref',
1577                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1578                 '--format=%(objectname) %(objecttype) %(refname) '.
1579                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1580                 'refs/tags'
1581                 or return;
1582         while (my $line = <$fd>) {
1583                 my %ref_item;
1584
1585                 chomp $line;
1586                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1587                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1588                 my ($creator, $epoch, $tz) =
1589                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1590                 $name =~ s!^refs/tags/!!;
1591
1592                 $ref_item{'type'} = $type;
1593                 $ref_item{'id'} = $id;
1594                 $ref_item{'name'} = $name;
1595                 if ($type eq "tag") {
1596                         $ref_item{'subject'} = $title;
1597                         $ref_item{'reftype'} = $reftype;
1598                         $ref_item{'refid'}   = $refid;
1599                 } else {
1600                         $ref_item{'reftype'} = $type;
1601                         $ref_item{'refid'}   = $id;
1602                 }
1603
1604                 if ($type eq "tag" || $type eq "commit") {
1605                         $ref_item{'epoch'} = $epoch;
1606                         if ($epoch) {
1607                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1608                         } else {
1609                                 $ref_item{'age'} = "unknown";
1610                         }
1611                 }
1612
1613                 push @tagslist, \%ref_item;
1614         }
1615         close $fd;
1616
1617         return wantarray ? @tagslist : \@tagslist;
1618 }
1619
1620 ## ----------------------------------------------------------------------
1621 ## filesystem-related functions
1622
1623 sub get_file_owner {
1624         my $path = shift;
1625
1626         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1627         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1628         if (!defined $gcos) {
1629                 return undef;
1630         }
1631         my $owner = $gcos;
1632         $owner =~ s/[,;].*$//;
1633         return to_utf8($owner);
1634 }
1635
1636 ## ......................................................................
1637 ## mimetype related functions
1638
1639 sub mimetype_guess_file {
1640         my $filename = shift;
1641         my $mimemap = shift;
1642         -r $mimemap or return undef;
1643
1644         my %mimemap;
1645         open(MIME, $mimemap) or return undef;
1646         while (<MIME>) {
1647                 next if m/^#/; # skip comments
1648                 my ($mime, $exts) = split(/\t+/);
1649                 if (defined $exts) {
1650                         my @exts = split(/\s+/, $exts);
1651                         foreach my $ext (@exts) {
1652                                 $mimemap{$ext} = $mime;
1653                         }
1654                 }
1655         }
1656         close(MIME);
1657
1658         $filename =~ /\.([^.]*)$/;
1659         return $mimemap{$1};
1660 }
1661
1662 sub mimetype_guess {
1663         my $filename = shift;
1664         my $mime;
1665         $filename =~ /\./ or return undef;
1666
1667         if ($mimetypes_file) {
1668                 my $file = $mimetypes_file;
1669                 if ($file !~ m!^/!) { # if it is relative path
1670                         # it is relative to project
1671                         $file = "$projectroot/$project/$file";
1672                 }
1673                 $mime = mimetype_guess_file($filename, $file);
1674         }
1675         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1676         return $mime;
1677 }
1678
1679 sub blob_mimetype {
1680         my $fd = shift;
1681         my $filename = shift;
1682
1683         if ($filename) {
1684                 my $mime = mimetype_guess($filename);
1685                 $mime and return $mime;
1686         }
1687
1688         # just in case
1689         return $default_blob_plain_mimetype unless $fd;
1690
1691         if (-T $fd) {
1692                 return 'text/plain' .
1693                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1694         } elsif (! $filename) {
1695                 return 'application/octet-stream';
1696         } elsif ($filename =~ m/\.png$/i) {
1697                 return 'image/png';
1698         } elsif ($filename =~ m/\.gif$/i) {
1699                 return 'image/gif';
1700         } elsif ($filename =~ m/\.jpe?g$/i) {
1701                 return 'image/jpeg';
1702         } else {
1703                 return 'application/octet-stream';
1704         }
1705 }
1706
1707 ## ======================================================================
1708 ## functions printing HTML: header, footer, error page
1709
1710 sub git_header_html {
1711         my $status = shift || "200 OK";
1712         my $expires = shift;
1713
1714         my $title = "$site_name";
1715         if (defined $project) {
1716                 $title .= " - " . to_utf8($project);
1717                 if (defined $action) {
1718                         $title .= "/$action";
1719                         if (defined $file_name) {
1720                                 $title .= " - " . esc_path($file_name);
1721                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1722                                         $title .= "/";
1723                                 }
1724                         }
1725                 }
1726         }
1727         my $content_type;
1728         # require explicit support from the UA if we are to send the page as
1729         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1730         # we have to do this because MSIE sometimes globs '*/*', pretending to
1731         # support xhtml+xml but choking when it gets what it asked for.
1732         if (defined $cgi->http('HTTP_ACCEPT') &&
1733             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1734             $cgi->Accept('application/xhtml+xml') != 0) {
1735                 $content_type = 'application/xhtml+xml';
1736         } else {
1737                 $content_type = 'text/html';
1738         }
1739         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1740                            -status=> $status, -expires => $expires);
1741         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1742         print <<EOF;
1743 <?xml version="1.0" encoding="utf-8"?>
1744 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1745 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1746 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1747 <!-- git core binaries version $git_version -->
1748 <head>
1749 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1750 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1751 <meta name="robots" content="index, nofollow"/>
1752 <title>$title</title>
1753 EOF
1754 # print out each stylesheet that exist
1755         if (defined $stylesheet) {
1756 #provides backwards capability for those people who define style sheet in a config file
1757                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1758         } else {
1759                 foreach my $stylesheet (@stylesheets) {
1760                         next unless $stylesheet;
1761                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1762                 }
1763         }
1764         if (defined $project) {
1765                 printf('<link rel="alternate" title="%s log RSS feed" '.
1766                        'href="%s" type="application/rss+xml" />'."\n",
1767                        esc_param($project), href(action=>"rss"));
1768                 printf('<link rel="alternate" title="%s log Atom feed" '.
1769                        'href="%s" type="application/atom+xml" />'."\n",
1770                        esc_param($project), href(action=>"atom"));
1771         } else {
1772                 printf('<link rel="alternate" title="%s projects list" '.
1773                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1774                        $site_name, href(project=>undef, action=>"project_index"));
1775                 printf('<link rel="alternate" title="%s projects feeds" '.
1776                        'href="%s" type="text/x-opml"/>'."\n",
1777                        $site_name, href(project=>undef, action=>"opml"));
1778         }
1779         if (defined $favicon) {
1780                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1781         }
1782
1783         print "</head>\n" .
1784               "<body>\n";
1785
1786         if (-f $site_header) {
1787                 open (my $fd, $site_header);
1788                 print <$fd>;
1789                 close $fd;
1790         }
1791
1792         print "<div class=\"page_header\">\n" .
1793               $cgi->a({-href => esc_url($logo_url),
1794                        -title => $logo_label},
1795                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1796         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1797         if (defined $project) {
1798                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1799                 if (defined $action) {
1800                         print " / $action";
1801                 }
1802                 print "\n";
1803         }
1804         my ($have_search) = gitweb_check_feature('search');
1805         if ((defined $project) && ($have_search)) {
1806                 if (!defined $searchtext) {
1807                         $searchtext = "";
1808                 }
1809                 my $search_hash;
1810                 if (defined $hash_base) {
1811                         $search_hash = $hash_base;
1812                 } elsif (defined $hash) {
1813                         $search_hash = $hash;
1814                 } else {
1815                         $search_hash = "HEAD";
1816                 }
1817                 $cgi->param("a", "search");
1818                 $cgi->param("h", $search_hash);
1819                 $cgi->param("p", $project);
1820                 print $cgi->startform(-method => "get", -action => $my_uri) .
1821                       "<div class=\"search\">\n" .
1822                       $cgi->hidden(-name => "p") . "\n" .
1823                       $cgi->hidden(-name => "a") . "\n" .
1824                       $cgi->hidden(-name => "h") . "\n" .
1825                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1826                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1827                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1828                       " search:\n",
1829                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1830                       "</div>" .
1831                       $cgi->end_form() . "\n";
1832         }
1833         print "</div>\n";
1834 }
1835
1836 sub git_footer_html {
1837         print "<div class=\"page_footer\">\n";
1838         if (defined $project) {
1839                 my $descr = git_get_project_description($project);
1840                 if (defined $descr) {
1841                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1842                 }
1843                 print $cgi->a({-href => href(action=>"rss"),
1844                               -class => "rss_logo"}, "RSS") . " ";
1845                 print $cgi->a({-href => href(action=>"atom"),
1846                               -class => "rss_logo"}, "Atom") . "\n";
1847         } else {
1848                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1849                               -class => "rss_logo"}, "OPML") . " ";
1850                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1851                               -class => "rss_logo"}, "TXT") . "\n";
1852         }
1853         print "</div>\n" ;
1854
1855         if (-f $site_footer) {
1856                 open (my $fd, $site_footer);
1857                 print <$fd>;
1858                 close $fd;
1859         }
1860
1861         print "</body>\n" .
1862               "</html>";
1863 }
1864
1865 sub die_error {
1866         my $status = shift || "403 Forbidden";
1867         my $error = shift || "Malformed query, file missing or permission denied";
1868
1869         git_header_html($status);
1870         print <<EOF;
1871 <div class="page_body">
1872 <br /><br />
1873 $status - $error
1874 <br />
1875 </div>
1876 EOF
1877         git_footer_html();
1878         exit;
1879 }
1880
1881 ## ----------------------------------------------------------------------
1882 ## functions printing or outputting HTML: navigation
1883
1884 sub git_print_page_nav {
1885         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1886         $extra = '' if !defined $extra; # pager or formats
1887
1888         my @navs = qw(summary shortlog log commit commitdiff tree);
1889         if ($suppress) {
1890                 @navs = grep { $_ ne $suppress } @navs;
1891         }
1892
1893         my %arg = map { $_ => {action=>$_} } @navs;
1894         if (defined $head) {
1895                 for (qw(commit commitdiff)) {
1896                         $arg{$_}{'hash'} = $head;
1897                 }
1898                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1899                         for (qw(shortlog log)) {
1900                                 $arg{$_}{'hash'} = $head;
1901                         }
1902                 }
1903         }
1904         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1905         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1906
1907         print "<div class=\"page_nav\">\n" .
1908                 (join " | ",
1909                  map { $_ eq $current ?
1910                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1911                  } @navs);
1912         print "<br/>\n$extra<br/>\n" .
1913               "</div>\n";
1914 }
1915
1916 sub format_paging_nav {
1917         my ($action, $hash, $head, $page, $nrevs) = @_;
1918         my $paging_nav;
1919
1920
1921         if ($hash ne $head || $page) {
1922                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1923         } else {
1924                 $paging_nav .= "HEAD";
1925         }
1926
1927         if ($page > 0) {
1928                 $paging_nav .= " &sdot; " .
1929                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1930                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1931         } else {
1932                 $paging_nav .= " &sdot; prev";
1933         }
1934
1935         if ($nrevs >= (100 * ($page+1)-1)) {
1936                 $paging_nav .= " &sdot; " .
1937                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1938                                  -accesskey => "n", -title => "Alt-n"}, "next");
1939         } else {
1940                 $paging_nav .= " &sdot; next";
1941         }
1942
1943         return $paging_nav;
1944 }
1945
1946 ## ......................................................................
1947 ## functions printing or outputting HTML: div
1948
1949 sub git_print_header_div {
1950         my ($action, $title, $hash, $hash_base) = @_;
1951         my %args = ();
1952
1953         $args{'action'} = $action;
1954         $args{'hash'} = $hash if $hash;
1955         $args{'hash_base'} = $hash_base if $hash_base;
1956
1957         print "<div class=\"header\">\n" .
1958               $cgi->a({-href => href(%args), -class => "title"},
1959               $title ? $title : $action) .
1960               "\n</div>\n";
1961 }
1962
1963 #sub git_print_authorship (\%) {
1964 sub git_print_authorship {
1965         my $co = shift;
1966
1967         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1968         print "<div class=\"author_date\">" .
1969               esc_html($co->{'author_name'}) .
1970               " [$ad{'rfc2822'}";
1971         if ($ad{'hour_local'} < 6) {
1972                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1973                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1974         } else {
1975                 printf(" (%02d:%02d %s)",
1976                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1977         }
1978         print "]</div>\n";
1979 }
1980
1981 sub git_print_page_path {
1982         my $name = shift;
1983         my $type = shift;
1984         my $hb = shift;
1985
1986
1987         print "<div class=\"page_path\">";
1988         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1989                       -title => 'tree root'}, to_utf8("[$project]"));
1990         print " / ";
1991         if (defined $name) {
1992                 my @dirname = split '/', $name;
1993                 my $basename = pop @dirname;
1994                 my $fullname = '';
1995
1996                 foreach my $dir (@dirname) {
1997                         $fullname .= ($fullname ? '/' : '') . $dir;
1998                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1999                                                      hash_base=>$hb),
2000                                       -title => $fullname}, esc_path($dir));
2001                         print " / ";
2002                 }
2003                 if (defined $type && $type eq 'blob') {
2004                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2005                                                      hash_base=>$hb),
2006                                       -title => $name}, esc_path($basename));
2007                 } elsif (defined $type && $type eq 'tree') {
2008                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2009                                                      hash_base=>$hb),
2010                                       -title => $name}, esc_path($basename));
2011                         print " / ";
2012                 } else {
2013                         print esc_path($basename);
2014                 }
2015         }
2016         print "<br/></div>\n";
2017 }
2018
2019 # sub git_print_log (\@;%) {
2020 sub git_print_log ($;%) {
2021         my $log = shift;
2022         my %opts = @_;
2023
2024         if ($opts{'-remove_title'}) {
2025                 # remove title, i.e. first line of log
2026                 shift @$log;
2027         }
2028         # remove leading empty lines
2029         while (defined $log->[0] && $log->[0] eq "") {
2030                 shift @$log;
2031         }
2032
2033         # print log
2034         my $signoff = 0;
2035         my $empty = 0;
2036         foreach my $line (@$log) {
2037                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2038                         $signoff = 1;
2039                         $empty = 0;
2040                         if (! $opts{'-remove_signoff'}) {
2041                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2042                                 next;
2043                         } else {
2044                                 # remove signoff lines
2045                                 next;
2046                         }
2047                 } else {
2048                         $signoff = 0;
2049                 }
2050
2051                 # print only one empty line
2052                 # do not print empty line after signoff
2053                 if ($line eq "") {
2054                         next if ($empty || $signoff);
2055                         $empty = 1;
2056                 } else {
2057                         $empty = 0;
2058                 }
2059
2060                 print format_log_line_html($line) . "<br/>\n";
2061         }
2062
2063         if ($opts{'-final_empty_line'}) {
2064                 # end with single empty line
2065                 print "<br/>\n" unless $empty;
2066         }
2067 }
2068
2069 # return link target (what link points to)
2070 sub git_get_link_target {
2071         my $hash = shift;
2072         my $link_target;
2073
2074         # read link
2075         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2076                 or return;
2077         {
2078                 local $/;
2079                 $link_target = <$fd>;
2080         }
2081         close $fd
2082                 or return;
2083
2084         return $link_target;
2085 }
2086
2087 # given link target, and the directory (basedir) the link is in,
2088 # return target of link relative to top directory (top tree);
2089 # return undef if it is not possible (including absolute links).
2090 sub normalize_link_target {
2091         my ($link_target, $basedir, $hash_base) = @_;
2092
2093         # we can normalize symlink target only if $hash_base is provided
2094         return unless $hash_base;
2095
2096         # absolute symlinks (beginning with '/') cannot be normalized
2097         return if (substr($link_target, 0, 1) eq '/');
2098
2099         # normalize link target to path from top (root) tree (dir)
2100         my $path;
2101         if ($basedir) {
2102                 $path = $basedir . '/' . $link_target;
2103         } else {
2104                 # we are in top (root) tree (dir)
2105                 $path = $link_target;
2106         }
2107
2108         # remove //, /./, and /../
2109         my @path_parts;
2110         foreach my $part (split('/', $path)) {
2111                 # discard '.' and ''
2112                 next if (!$part || $part eq '.');
2113                 # handle '..'
2114                 if ($part eq '..') {
2115                         if (@path_parts) {
2116                                 pop @path_parts;
2117                         } else {
2118                                 # link leads outside repository (outside top dir)
2119                                 return;
2120                         }
2121                 } else {
2122                         push @path_parts, $part;
2123                 }
2124         }
2125         $path = join('/', @path_parts);
2126
2127         return $path;
2128 }
2129
2130 # print tree entry (row of git_tree), but without encompassing <tr> element
2131 sub git_print_tree_entry {
2132         my ($t, $basedir, $hash_base, $have_blame) = @_;
2133
2134         my %base_key = ();
2135         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2136
2137         # The format of a table row is: mode list link.  Where mode is
2138         # the mode of the entry, list is the name of the entry, an href,
2139         # and link is the action links of the entry.
2140
2141         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2142         if ($t->{'type'} eq "blob") {
2143                 print "<td class=\"list\">" .
2144                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2145                                                file_name=>"$basedir$t->{'name'}", %base_key),
2146                                 -class => "list"}, esc_path($t->{'name'}));
2147                 if (S_ISLNK(oct $t->{'mode'})) {
2148                         my $link_target = git_get_link_target($t->{'hash'});
2149                         if ($link_target) {
2150                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2151                                 if (defined $norm_target) {
2152                                         print " -> " .
2153                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2154                                                                      file_name=>$norm_target),
2155                                                        -title => $norm_target}, esc_path($link_target));
2156                                 } else {
2157                                         print " -> " . esc_path($link_target);
2158                                 }
2159                         }
2160                 }
2161                 print "</td>\n";
2162                 print "<td class=\"link\">";
2163                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2164                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2165                               "blob");
2166                 if ($have_blame) {
2167                         print " | " .
2168                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2169                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2170                                       "blame");
2171                 }
2172                 if (defined $hash_base) {
2173                         print " | " .
2174                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2175                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2176                                       "history");
2177                 }
2178                 print " | " .
2179                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2180                                                file_name=>"$basedir$t->{'name'}")},
2181                                 "raw");
2182                 print "</td>\n";
2183
2184         } elsif ($t->{'type'} eq "tree") {
2185                 print "<td class=\"list\">";
2186                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2187                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2188                               esc_path($t->{'name'}));
2189                 print "</td>\n";
2190                 print "<td class=\"link\">";
2191                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2192                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2193                               "tree");
2194                 if (defined $hash_base) {
2195                         print " | " .
2196                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2197                                                      file_name=>"$basedir$t->{'name'}")},
2198                                       "history");
2199                 }
2200                 print "</td>\n";
2201         }
2202 }
2203
2204 ## ......................................................................
2205 ## functions printing large fragments of HTML
2206
2207 sub git_difftree_body {
2208         my ($difftree, $hash, $parent) = @_;
2209         my ($have_blame) = gitweb_check_feature('blame');
2210         print "<div class=\"list_head\">\n";
2211         if ($#{$difftree} > 10) {
2212                 print(($#{$difftree} + 1) . " files changed:\n");
2213         }
2214         print "</div>\n";
2215
2216         print "<table class=\"diff_tree\">\n";
2217         my $alternate = 1;
2218         my $patchno = 0;
2219         foreach my $line (@{$difftree}) {
2220                 my %diff = parse_difftree_raw_line($line);
2221
2222                 if ($alternate) {
2223                         print "<tr class=\"dark\">\n";
2224                 } else {
2225                         print "<tr class=\"light\">\n";
2226                 }
2227                 $alternate ^= 1;
2228
2229                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2230                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2231                 if ($diff{'to_mode'} ne ('0' x 6)) {
2232                         $to_mode_oct = oct $diff{'to_mode'};
2233                         if (S_ISREG($to_mode_oct)) { # only for regular file
2234                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2235                         }
2236                         $to_file_type = file_type($diff{'to_mode'});
2237                 }
2238                 if ($diff{'from_mode'} ne ('0' x 6)) {
2239                         $from_mode_oct = oct $diff{'from_mode'};
2240                         if (S_ISREG($to_mode_oct)) { # only for regular file
2241                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2242                         }
2243                         $from_file_type = file_type($diff{'from_mode'});
2244                 }
2245
2246                 if ($diff{'status'} eq "A") { # created
2247                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2248                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2249                         $mode_chng   .= "]</span>";
2250                         print "<td>";
2251                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2252                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2253                                       -class => "list"}, esc_path($diff{'file'}));
2254                         print "</td>\n";
2255                         print "<td>$mode_chng</td>\n";
2256                         print "<td class=\"link\">";
2257                         if ($action eq 'commitdiff') {
2258                                 # link to patch
2259                                 $patchno++;
2260                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2261                                 print " | ";
2262                         }
2263                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2264                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2265                                       "blob");
2266                         print "</td>\n";
2267
2268                 } elsif ($diff{'status'} eq "D") { # deleted
2269                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2270                         print "<td>";
2271                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2272                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2273                                        -class => "list"}, esc_path($diff{'file'}));
2274                         print "</td>\n";
2275                         print "<td>$mode_chng</td>\n";
2276                         print "<td class=\"link\">";
2277                         if ($action eq 'commitdiff') {
2278                                 # link to patch
2279                                 $patchno++;
2280                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2281                                 print " | ";
2282                         }
2283                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2284                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2285                                       "blob") . " | ";
2286                         if ($have_blame) {
2287                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2288                                                              file_name=>$diff{'file'})},
2289                                               "blame") . " | ";
2290                         }
2291                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2292                                                      file_name=>$diff{'file'})},
2293                                       "history");
2294                         print "</td>\n";
2295
2296                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2297                         my $mode_chnge = "";
2298                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2299                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2300                                 if ($from_file_type ne $to_file_type) {
2301                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2302                                 }
2303                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2304                                         if ($from_mode_str && $to_mode_str) {
2305                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2306                                         } elsif ($to_mode_str) {
2307                                                 $mode_chnge .= " mode: $to_mode_str";
2308                                         }
2309                                 }
2310                                 $mode_chnge .= "]</span>\n";
2311                         }
2312                         print "<td>";
2313                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2314                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2315                                       -class => "list"}, esc_path($diff{'file'}));
2316                         print "</td>\n";
2317                         print "<td>$mode_chnge</td>\n";
2318                         print "<td class=\"link\">";
2319                         if ($action eq 'commitdiff') {
2320                                 # link to patch
2321                                 $patchno++;
2322                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2323                                       " | ";
2324                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2325                                 # "commit" view and modified file (not onlu mode changed)
2326                                 print $cgi->a({-href => href(action=>"blobdiff",
2327                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2328                                                              hash_base=>$hash, hash_parent_base=>$parent,
2329                                                              file_name=>$diff{'file'})},
2330                                               "diff") .
2331                                       " | ";
2332                         }
2333                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2334                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2335                                        "blob") . " | ";
2336                         if ($have_blame) {
2337                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2338                                                              file_name=>$diff{'file'})},
2339                                               "blame") . " | ";
2340                         }
2341                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2342                                                      file_name=>$diff{'file'})},
2343                                       "history");
2344                         print "</td>\n";
2345
2346                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2347                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2348                         my $nstatus = $status_name{$diff{'status'}};
2349                         my $mode_chng = "";
2350                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2351                                 # mode also for directories, so we cannot use $to_mode_str
2352                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2353                         }
2354                         print "<td>" .
2355                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2356                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2357                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2358                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2359                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2360                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2361                                       -class => "list"}, esc_path($diff{'from_file'})) .
2362                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2363                               "<td class=\"link\">";
2364                         if ($action eq 'commitdiff') {
2365                                 # link to patch
2366                                 $patchno++;
2367                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2368                                       " | ";
2369                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2370                                 # "commit" view and modified file (not only pure rename or copy)
2371                                 print $cgi->a({-href => href(action=>"blobdiff",
2372                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2373                                                              hash_base=>$hash, hash_parent_base=>$parent,
2374                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2375                                               "diff") .
2376                                       " | ";
2377                         }
2378                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2379                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2380                                       "blob") . " | ";
2381                         if ($have_blame) {
2382                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2383                                                              file_name=>$diff{'to_file'})},
2384                                               "blame") . " | ";
2385                         }
2386                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2387                                                     file_name=>$diff{'to_file'})},
2388                                       "history");
2389                         print "</td>\n";
2390
2391                 } # we should not encounter Unmerged (U) or Unknown (X) status
2392                 print "</tr>\n";
2393         }
2394         print "</table>\n";
2395 }
2396
2397 sub git_patchset_body {
2398         my ($fd, $difftree, $hash, $hash_parent) = @_;
2399
2400         my $patch_idx = 0;
2401         my $patch_number = 0;
2402         my $patch_line;
2403         my $diffinfo;
2404         my (%from, %to);
2405
2406         print "<div class=\"patchset\">\n";
2407
2408         # skip to first patch
2409         while ($patch_line = <$fd>) {
2410                 chomp $patch_line;
2411
2412                 last if ($patch_line =~ m/^diff /);
2413         }
2414
2415  PATCH:
2416         while ($patch_line) {
2417                 my @diff_header;
2418                 my ($from_id, $to_id);
2419
2420                 # git diff header
2421                 #assert($patch_line =~ m/^diff /) if DEBUG;
2422                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2423                 $patch_number++;
2424                 push @diff_header, $patch_line;
2425
2426                 # extended diff header
2427         EXTENDED_HEADER:
2428                 while ($patch_line = <$fd>) {
2429                         chomp $patch_line;
2430
2431                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2432
2433                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2434                                 $from_id = $1;
2435                                 $to_id   = $2;
2436                         }
2437
2438                         push @diff_header, $patch_line;
2439                 }
2440                 my $last_patch_line = $patch_line;
2441
2442                 # check if current patch belong to current raw line
2443                 # and parse raw git-diff line if needed
2444                 if (defined $diffinfo &&
2445                     $diffinfo->{'from_id'} eq $from_id &&
2446                     $diffinfo->{'to_id'}   eq $to_id) {
2447                         # this is split patch
2448                         print "<div class=\"patch cont\">\n";
2449                 } else {
2450                         # advance raw git-diff output if needed
2451                         $patch_idx++ if defined $diffinfo;
2452
2453                         # read and prepare patch information
2454                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2455                                 # pre-parsed (or generated by hand)
2456                                 $diffinfo = $difftree->[$patch_idx];
2457                         } else {
2458                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2459                         }
2460                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2461                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2462                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2463                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2464                                                      hash=>$diffinfo->{'from_id'},
2465                                                      file_name=>$from{'file'});
2466                         } else {
2467                                 delete $from{'href'};
2468                         }
2469                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2470                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2471                                                    hash=>$diffinfo->{'to_id'},
2472                                                    file_name=>$to{'file'});
2473                         } else {
2474                                 delete $to{'href'};
2475                         }
2476                         # this is first patch for raw difftree line with $patch_idx index
2477                         # we index @$difftree array from 0, but number patches from 1
2478                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2479                 }
2480
2481                 # print "git diff" header
2482                 $patch_line = shift @diff_header;
2483                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2484                 if ($from{'href'}) {
2485                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2486                                                'a/' . esc_path($from{'file'}));
2487                 } else { # file was added
2488                         $patch_line .= 'a/' . esc_path($from{'file'});
2489                 }
2490                 $patch_line .= ' ';
2491                 if ($to{'href'}) {
2492                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2493                                                'b/' . esc_path($to{'file'}));
2494                 } else { # file was deleted
2495                         $patch_line .= 'b/' . esc_path($to{'file'});
2496                 }
2497                 print "<div class=\"diff header\">$patch_line</div>\n";
2498
2499                 # print extended diff header
2500                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2501         EXTENDED_HEADER:
2502                 foreach $patch_line (@diff_header) {
2503                         # match <path>
2504                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2505                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2506                                                        esc_path($from{'file'}));
2507                         }
2508                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2509                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2510                                                        esc_path($to{'file'}));
2511                         }
2512                         # match <mode>
2513                         if ($patch_line =~ m/\s(\d{6})$/) {
2514                                 $patch_line .= '<span class="info"> (' .
2515                                                file_type_long($1) .
2516                                                ')</span>';
2517                         }
2518                         # match <hash>
2519                         if ($patch_line =~ m/^index/) {
2520                                 my ($from_link, $to_link);
2521                                 if ($from{'href'}) {
2522                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2523                                                              substr($diffinfo->{'from_id'},0,7));
2524                                 } else {
2525                                         $from_link = '0' x 7;
2526                                 }
2527                                 if ($to{'href'}) {
2528                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2529                                                            substr($diffinfo->{'to_id'},0,7));
2530                                 } else {
2531                                         $to_link = '0' x 7;
2532                                 }
2533                                 #affirm {
2534                                 #       my ($from_hash, $to_hash) =
2535                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2536                                 #       my ($from_id, $to_id) =
2537                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2538                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2539                                 #} if DEBUG;
2540                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2541                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2542                         }
2543                         print $patch_line . "<br/>\n";
2544                 }
2545                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2546
2547                 # from-file/to-file diff header
2548                 $patch_line = $last_patch_line;
2549                 if (! $patch_line) {
2550                         print "</div>\n"; # class="patch"
2551                         last PATCH;
2552                 }
2553                 next PATCH if ($patch_line =~ m/^diff /);
2554                 #assert($patch_line =~ m/^---/) if DEBUG;
2555                 if ($from{'href'} && $patch_line =~ m!^--- "?a/!) {
2556                         $patch_line = '--- a/' .
2557                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2558                                               esc_path($from{'file'}));
2559                 }
2560                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2561
2562                 $patch_line = <$fd>;
2563                 chomp $patch_line;
2564
2565                 #assert($patch_line =~ m/^+++/) if DEBUG;
2566                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2567                         $patch_line = '+++ b/' .
2568                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2569                                               esc_path($to{'file'}));
2570                 }
2571                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2572
2573                 # the patch itself
2574         LINE:
2575                 while ($patch_line = <$fd>) {
2576                         chomp $patch_line;
2577
2578                         next PATCH if ($patch_line =~ m/^diff /);
2579
2580                         print format_diff_line($patch_line, \%from, \%to);
2581                 }
2582
2583         } continue {
2584                 print "</div>\n"; # class="patch"
2585         }
2586         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2587
2588         print "</div>\n"; # class="patchset"
2589 }
2590
2591 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2592
2593 sub git_project_list_body {
2594         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2595
2596         my ($check_forks) = gitweb_check_feature('forks');
2597
2598         my @projects;
2599         foreach my $pr (@$projlist) {
2600                 my (@aa) = git_get_last_activity($pr->{'path'});
2601                 unless (@aa) {
2602                         next;
2603                 }
2604                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2605                 if (!defined $pr->{'descr'}) {
2606                         my $descr = git_get_project_description($pr->{'path'}) || "";
2607                         $pr->{'descr_long'} = to_utf8($descr);
2608                         $pr->{'descr'} = chop_str($descr, 25, 5);
2609                 }
2610                 if (!defined $pr->{'owner'}) {
2611                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2612                 }
2613                 if ($check_forks) {
2614                         my $pname = $pr->{'path'};
2615                         if (($pname =~ s/\.git$//) &&
2616                             ($pname !~ /\/$/) &&
2617                             (-d "$projectroot/$pname")) {
2618                                 $pr->{'forks'} = "-d $projectroot/$pname";
2619                         }
2620                         else {
2621                                 $pr->{'forks'} = 0;
2622                         }
2623                 }
2624                 push @projects, $pr;
2625         }
2626
2627         $order ||= $default_projects_order;
2628         $from = 0 unless defined $from;
2629         $to = $#projects if (!defined $to || $#projects < $to);
2630
2631         print "<table class=\"project_list\">\n";
2632         unless ($no_header) {
2633                 print "<tr>\n";
2634                 if ($check_forks) {
2635                         print "<th></th>\n";
2636                 }
2637                 if ($order eq "project") {
2638                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2639                         print "<th>Project</th>\n";
2640                 } else {
2641                         print "<th>" .
2642                               $cgi->a({-href => href(project=>undef, order=>'project'),
2643                                        -class => "header"}, "Project") .
2644                               "</th>\n";
2645                 }
2646                 if ($order eq "descr") {
2647                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2648                         print "<th>Description</th>\n";
2649                 } else {
2650                         print "<th>" .
2651                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2652                                        -class => "header"}, "Description") .
2653                               "</th>\n";
2654                 }
2655                 if ($order eq "owner") {
2656                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2657                         print "<th>Owner</th>\n";
2658                 } else {
2659                         print "<th>" .
2660                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2661                                        -class => "header"}, "Owner") .
2662                               "</th>\n";
2663                 }
2664                 if ($order eq "age") {
2665                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2666                         print "<th>Last Change</th>\n";
2667                 } else {
2668                         print "<th>" .
2669                               $cgi->a({-href => href(project=>undef, order=>'age'),
2670                                        -class => "header"}, "Last Change") .
2671                               "</th>\n";
2672                 }
2673                 print "<th></th>\n" .
2674                       "</tr>\n";
2675         }
2676         my $alternate = 1;
2677         for (my $i = $from; $i <= $to; $i++) {
2678                 my $pr = $projects[$i];
2679                 if ($alternate) {
2680                         print "<tr class=\"dark\">\n";
2681                 } else {
2682                         print "<tr class=\"light\">\n";
2683                 }
2684                 $alternate ^= 1;
2685                 if ($check_forks) {
2686                         print "<td>";
2687                         if ($pr->{'forks'}) {
2688                                 print "<!-- $pr->{'forks'} -->\n";
2689                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2690                         }
2691                         print "</td>\n";
2692                 }
2693                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2694                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2695                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2696                                         -class => "list", -title => $pr->{'descr_long'}},
2697                                         esc_html($pr->{'descr'})) . "</td>\n" .
2698                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2699                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2700                       $pr->{'age_string'} . "</td>\n" .
2701                       "<td class=\"link\">" .
2702                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2703                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2704                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2705                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2706                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2707                       "</td>\n" .
2708                       "</tr>\n";
2709         }
2710         if (defined $extra) {
2711                 print "<tr>\n";
2712                 if ($check_forks) {
2713                         print "<td></td>\n";
2714                 }
2715                 print "<td colspan=\"5\">$extra</td>\n" .
2716                       "</tr>\n";
2717         }
2718         print "</table>\n";
2719 }
2720
2721 sub git_shortlog_body {
2722         # uses global variable $project
2723         my ($commitlist, $from, $to, $refs, $extra) = @_;
2724
2725         my $have_snapshot = gitweb_have_snapshot();
2726
2727         $from = 0 unless defined $from;
2728         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2729
2730         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2731         my $alternate = 1;
2732         for (my $i = $from; $i <= $to; $i++) {
2733                 my %co = %{$commitlist->[$i]};
2734                 my $commit = $co{'id'};
2735                 my $ref = format_ref_marker($refs, $commit);
2736                 if ($alternate) {
2737                         print "<tr class=\"dark\">\n";
2738                 } else {
2739                         print "<tr class=\"light\">\n";
2740                 }
2741                 $alternate ^= 1;
2742                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2743                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2744                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2745                       "<td>";
2746                 print format_subject_html($co{'title'}, $co{'title_short'},
2747                                           href(action=>"commit", hash=>$commit), $ref);
2748                 print "</td>\n" .
2749                       "<td class=\"link\">" .
2750                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2751                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2752                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2753                 if ($have_snapshot) {
2754                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2755                 }
2756                 print "</td>\n" .
2757                       "</tr>\n";
2758         }
2759         if (defined $extra) {
2760                 print "<tr>\n" .
2761                       "<td colspan=\"4\">$extra</td>\n" .
2762                       "</tr>\n";
2763         }
2764         print "</table>\n";
2765 }
2766
2767 sub git_history_body {
2768         # Warning: assumes constant type (blob or tree) during history
2769         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2770
2771         $from = 0 unless defined $from;
2772         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2773
2774         print "<table class=\"history\" cellspacing=\"0\">\n";
2775         my $alternate = 1;
2776         for (my $i = $from; $i <= $to; $i++) {
2777                 my %co = %{$commitlist->[$i]};
2778                 if (!%co) {
2779                         next;
2780                 }
2781                 my $commit = $co{'id'};
2782
2783                 my $ref = format_ref_marker($refs, $commit);
2784
2785                 if ($alternate) {
2786                         print "<tr class=\"dark\">\n";
2787                 } else {
2788                         print "<tr class=\"light\">\n";
2789                 }
2790                 $alternate ^= 1;
2791                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2792                       # shortlog uses      chop_str($co{'author_name'}, 10)
2793                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2794                       "<td>";
2795                 # originally git_history used chop_str($co{'title'}, 50)
2796                 print format_subject_html($co{'title'}, $co{'title_short'},
2797                                           href(action=>"commit", hash=>$commit), $ref);
2798                 print "</td>\n" .
2799                       "<td class=\"link\">" .
2800                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2801                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2802
2803                 if ($ftype eq 'blob') {
2804                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2805                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2806                         if (defined $blob_current && defined $blob_parent &&
2807                                         $blob_current ne $blob_parent) {
2808                                 print " | " .
2809                                         $cgi->a({-href => href(action=>"blobdiff",
2810                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2811                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2812                                                                file_name=>$file_name)},
2813                                                 "diff to current");
2814                         }
2815                 }
2816                 print "</td>\n" .
2817                       "</tr>\n";
2818         }
2819         if (defined $extra) {
2820                 print "<tr>\n" .
2821                       "<td colspan=\"4\">$extra</td>\n" .
2822                       "</tr>\n";
2823         }
2824         print "</table>\n";
2825 }
2826
2827 sub git_tags_body {
2828         # uses global variable $project
2829         my ($taglist, $from, $to, $extra) = @_;
2830         $from = 0 unless defined $from;
2831         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2832
2833         print "<table class=\"tags\" cellspacing=\"0\">\n";
2834         my $alternate = 1;
2835         for (my $i = $from; $i <= $to; $i++) {
2836                 my $entry = $taglist->[$i];
2837                 my %tag = %$entry;
2838                 my $comment = $tag{'subject'};
2839                 my $comment_short;
2840                 if (defined $comment) {
2841                         $comment_short = chop_str($comment, 30, 5);
2842                 }
2843                 if ($alternate) {
2844                         print "<tr class=\"dark\">\n";
2845                 } else {
2846                         print "<tr class=\"light\">\n";
2847                 }
2848                 $alternate ^= 1;
2849                 if (defined $tag{'age'}) {
2850                         print "<td><i>$tag{'age'}</i></td>\n";
2851                 } else {
2852                         print "<td></td>\n";
2853                 }
2854                 print "<td>" .
2855                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2856                                -class => "list name"}, esc_html($tag{'name'})) .
2857                       "</td>\n" .
2858                       "<td>";
2859                 if (defined $comment) {
2860                         print format_subject_html($comment, $comment_short,
2861                                                   href(action=>"tag", hash=>$tag{'id'}));
2862                 }
2863                 print "</td>\n" .
2864                       "<td class=\"selflink\">";
2865                 if ($tag{'type'} eq "tag") {
2866                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2867                 } else {
2868                         print "&nbsp;";
2869                 }
2870                 print "</td>\n" .
2871                       "<td class=\"link\">" . " | " .
2872                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2873                 if ($tag{'reftype'} eq "commit") {
2874                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2875                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2876                 } elsif ($tag{'reftype'} eq "blob") {
2877                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2878                 }
2879                 print "</td>\n" .
2880                       "</tr>";
2881         }
2882         if (defined $extra) {
2883                 print "<tr>\n" .
2884                       "<td colspan=\"5\">$extra</td>\n" .
2885                       "</tr>\n";
2886         }
2887         print "</table>\n";
2888 }
2889
2890 sub git_heads_body {
2891         # uses global variable $project
2892         my ($headlist, $head, $from, $to, $extra) = @_;
2893         $from = 0 unless defined $from;
2894         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2895
2896         print "<table class=\"heads\" cellspacing=\"0\">\n";
2897         my $alternate = 1;
2898         for (my $i = $from; $i <= $to; $i++) {
2899                 my $entry = $headlist->[$i];
2900                 my %ref = %$entry;
2901                 my $curr = $ref{'id'} eq $head;
2902                 if ($alternate) {
2903                         print "<tr class=\"dark\">\n";
2904                 } else {
2905                         print "<tr class=\"light\">\n";
2906                 }
2907                 $alternate ^= 1;
2908                 print "<td><i>$ref{'age'}</i></td>\n" .
2909                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2910                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2911                                -class => "list name"},esc_html($ref{'name'})) .
2912                       "</td>\n" .
2913                       "<td class=\"link\">" .
2914                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2915                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2916                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2917                       "</td>\n" .
2918                       "</tr>";
2919         }
2920         if (defined $extra) {
2921                 print "<tr>\n" .
2922                       "<td colspan=\"3\">$extra</td>\n" .
2923                       "</tr>\n";
2924         }
2925         print "</table>\n";
2926 }
2927
2928 sub git_search_grep_body {
2929         my ($commitlist, $from, $to, $extra) = @_;
2930         $from = 0 unless defined $from;
2931         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2932
2933         print "<table class=\"grep\" cellspacing=\"0\">\n";
2934         my $alternate = 1;
2935         for (my $i = $from; $i <= $to; $i++) {
2936                 my %co = %{$commitlist->[$i]};
2937                 if (!%co) {
2938                         next;
2939                 }
2940                 my $commit = $co{'id'};
2941                 if ($alternate) {
2942                         print "<tr class=\"dark\">\n";
2943                 } else {
2944                         print "<tr class=\"light\">\n";
2945                 }
2946                 $alternate ^= 1;
2947                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2948                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2949                       "<td>" .
2950                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2951                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2952                 my $comment = $co{'comment'};
2953                 foreach my $line (@$comment) {
2954                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2955                                 my $lead = esc_html($1) || "";
2956                                 $lead = chop_str($lead, 30, 10);
2957                                 my $match = esc_html($2) || "";
2958                                 my $trail = esc_html($3) || "";
2959                                 $trail = chop_str($trail, 30, 10);
2960                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2961                                 print chop_str($text, 80, 5) . "<br/>\n";
2962                         }
2963                 }
2964                 print "</td>\n" .
2965                       "<td class=\"link\">" .
2966                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2967                       " | " .
2968                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2969                 print "</td>\n" .
2970                       "</tr>\n";
2971         }
2972         if (defined $extra) {
2973                 print "<tr>\n" .
2974                       "<td colspan=\"3\">$extra</td>\n" .
2975                       "</tr>\n";
2976         }
2977         print "</table>\n";
2978 }
2979
2980 ## ======================================================================
2981 ## ======================================================================
2982 ## actions
2983
2984 sub git_project_list {
2985         my $order = $cgi->param('o');
2986         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
2987                 die_error(undef, "Unknown order parameter");
2988         }
2989
2990         my @list = git_get_projects_list();
2991         if (!@list) {
2992                 die_error(undef, "No projects found");
2993         }
2994
2995         git_header_html();
2996         if (-f $home_text) {
2997                 print "<div class=\"index_include\">\n";
2998                 open (my $fd, $home_text);
2999                 print <$fd>;
3000                 close $fd;
3001                 print "</div>\n";
3002         }
3003         git_project_list_body(\@list, $order);
3004         git_footer_html();
3005 }
3006
3007 sub git_forks {
3008         my $order = $cgi->param('o');
3009         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3010                 die_error(undef, "Unknown order parameter");
3011         }
3012
3013         my @list = git_get_projects_list($project);
3014         if (!@list) {
3015                 die_error(undef, "No forks found");
3016         }
3017
3018         git_header_html();
3019         git_print_page_nav('','');
3020         git_print_header_div('summary', "$project forks");
3021         git_project_list_body(\@list, $order);
3022         git_footer_html();
3023 }
3024
3025 sub git_project_index {
3026         my @projects = git_get_projects_list($project);
3027
3028         print $cgi->header(
3029                 -type => 'text/plain',
3030                 -charset => 'utf-8',
3031                 -content_disposition => 'inline; filename="index.aux"');
3032
3033         foreach my $pr (@projects) {
3034                 if (!exists $pr->{'owner'}) {
3035                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3036                 }
3037
3038                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3039                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3040                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3041                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3042                 $path  =~ s/ /\+/g;
3043                 $owner =~ s/ /\+/g;
3044
3045                 print "$path $owner\n";
3046         }
3047 }
3048
3049 sub git_summary {
3050         my $descr = git_get_project_description($project) || "none";
3051         my %co = parse_commit("HEAD");
3052         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3053         my $head = $co{'id'};
3054
3055         my $owner = git_get_project_owner($project);
3056
3057         my $refs = git_get_references();
3058         # These get_*_list functions return one more to allow us to see if
3059         # there are more ...
3060         my @taglist  = git_get_tags_list(16);
3061         my @headlist = git_get_heads_list(16);
3062         my @forklist;
3063         my ($check_forks) = gitweb_check_feature('forks');
3064
3065         if ($check_forks) {
3066                 @forklist = git_get_projects_list($project);
3067         }
3068
3069         git_header_html();
3070         git_print_page_nav('summary','', $head);
3071
3072         print "<div class=\"title\">&nbsp;</div>\n";
3073         print "<table cellspacing=\"0\">\n" .
3074               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3075               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3076               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3077         # use per project git URL list in $projectroot/$project/cloneurl
3078         # or make project git URL from git base URL and project name
3079         my $url_tag = "URL";
3080         my @url_list = git_get_project_url_list($project);
3081         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3082         foreach my $git_url (@url_list) {
3083                 next unless $git_url;
3084                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3085                 $url_tag = "";
3086         }
3087         print "</table>\n";
3088
3089         if (-s "$projectroot/$project/README.html") {
3090                 if (open my $fd, "$projectroot/$project/README.html") {
3091                         print "<div class=\"title\">readme</div>\n";
3092                         print $_ while (<$fd>);
3093                         close $fd;
3094                 }
3095         }
3096
3097         # we need to request one more than 16 (0..15) to check if
3098         # those 16 are all
3099         my @commitlist = parse_commits($head, 17);
3100         git_print_header_div('shortlog');
3101         git_shortlog_body(\@commitlist, 0, 15, $refs,
3102                           $#commitlist <=  15 ? undef :
3103                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3104
3105         if (@taglist) {
3106                 git_print_header_div('tags');
3107                 git_tags_body(\@taglist, 0, 15,
3108                               $#taglist <=  15 ? undef :
3109                               $cgi->a({-href => href(action=>"tags")}, "..."));
3110         }
3111
3112         if (@headlist) {
3113                 git_print_header_div('heads');
3114                 git_heads_body(\@headlist, $head, 0, 15,
3115                                $#headlist <= 15 ? undef :
3116                                $cgi->a({-href => href(action=>"heads")}, "..."));
3117         }
3118
3119         if (@forklist) {
3120                 git_print_header_div('forks');
3121                 git_project_list_body(\@forklist, undef, 0, 15,
3122                                       $#forklist <= 15 ? undef :
3123                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3124                                       'noheader');
3125         }
3126
3127         git_footer_html();
3128 }
3129
3130 sub git_tag {
3131         my $head = git_get_head_hash($project);
3132         git_header_html();
3133         git_print_page_nav('','', $head,undef,$head);
3134         my %tag = parse_tag($hash);
3135         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3136         print "<div class=\"title_text\">\n" .
3137               "<table cellspacing=\"0\">\n" .
3138               "<tr>\n" .
3139               "<td>object</td>\n" .
3140               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3141                                $tag{'object'}) . "</td>\n" .
3142               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3143                                               $tag{'type'}) . "</td>\n" .
3144               "</tr>\n";
3145         if (defined($tag{'author'})) {
3146                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3147                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3148                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3149                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3150                         "</td></tr>\n";
3151         }
3152         print "</table>\n\n" .
3153               "</div>\n";
3154         print "<div class=\"page_body\">";
3155         my $comment = $tag{'comment'};
3156         foreach my $line (@$comment) {
3157                 chomp $line;
3158                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3159         }
3160         print "</div>\n";
3161         git_footer_html();
3162 }
3163
3164 sub git_blame2 {
3165         my $fd;
3166         my $ftype;
3167
3168         my ($have_blame) = gitweb_check_feature('blame');
3169         if (!$have_blame) {
3170                 die_error('403 Permission denied', "Permission denied");
3171         }
3172         die_error('404 Not Found', "File name not defined") if (!$file_name);
3173         $hash_base ||= git_get_head_hash($project);
3174         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3175         my %co = parse_commit($hash_base)
3176                 or die_error(undef, "Reading commit failed");
3177         if (!defined $hash) {
3178                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3179                         or die_error(undef, "Error looking up file");
3180         }
3181         $ftype = git_get_type($hash);
3182         if ($ftype !~ "blob") {
3183                 die_error('400 Bad Request', "Object is not a blob");
3184         }
3185         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3186               $file_name, $hash_base)
3187                 or die_error(undef, "Open git-blame failed");
3188         git_header_html();
3189         my $formats_nav =
3190                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3191                         "blob") .
3192                 " | " .
3193                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3194                         "history") .
3195                 " | " .
3196                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3197                         "HEAD");
3198         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3199         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3200         git_print_page_path($file_name, $ftype, $hash_base);
3201         my @rev_color = (qw(light2 dark2));
3202         my $num_colors = scalar(@rev_color);
3203         my $current_color = 0;
3204         my $last_rev;
3205         print <<HTML;
3206 <div class="page_body">
3207 <table class="blame">
3208 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3209 HTML
3210         my %metainfo = ();
3211         while (1) {
3212                 $_ = <$fd>;
3213                 last unless defined $_;
3214                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3215                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3216                 if (!exists $metainfo{$full_rev}) {
3217                         $metainfo{$full_rev} = {};
3218                 }
3219                 my $meta = $metainfo{$full_rev};
3220                 while (<$fd>) {
3221                         last if (s/^\t//);
3222                         if (/^(\S+) (.*)$/) {
3223                                 $meta->{$1} = $2;
3224                         }
3225                 }
3226                 my $data = $_;
3227                 chomp $data;
3228                 my $rev = substr($full_rev, 0, 8);
3229                 my $author = $meta->{'author'};
3230                 my %date = parse_date($meta->{'author-time'},
3231                                       $meta->{'author-tz'});
3232                 my $date = $date{'iso-tz'};
3233                 if ($group_size) {
3234                         $current_color = ++$current_color % $num_colors;
3235                 }
3236                 print "<tr class=\"$rev_color[$current_color]\">\n";
3237                 if ($group_size) {
3238                         print "<td class=\"sha1\"";
3239                         print " title=\"". esc_html($author) . ", $date\"";
3240                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3241                         print ">";
3242                         print $cgi->a({-href => href(action=>"commit",
3243                                                      hash=>$full_rev,
3244                                                      file_name=>$file_name)},
3245                                       esc_html($rev));
3246                         print "</td>\n";
3247                 }
3248                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3249                         or die_error(undef, "Open git-rev-parse failed");
3250                 my $parent_commit = <$dd>;
3251                 close $dd;
3252                 chomp($parent_commit);
3253                 my $blamed = href(action => 'blame',
3254                                   file_name => $meta->{'filename'},
3255                                   hash_base => $parent_commit);
3256                 print "<td class=\"linenr\">";
3257                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3258                                 -id => "l$lineno",
3259                                 -class => "linenr" },
3260                               esc_html($lineno));
3261                 print "</td>";
3262                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3263                 print "</tr>\n";
3264         }
3265         print "</table>\n";
3266         print "</div>";
3267         close $fd
3268                 or print "Reading blob failed\n";
3269         git_footer_html();
3270 }
3271
3272 sub git_blame {
3273         my $fd;
3274
3275         my ($have_blame) = gitweb_check_feature('blame');
3276         if (!$have_blame) {
3277                 die_error('403 Permission denied', "Permission denied");
3278         }
3279         die_error('404 Not Found', "File name not defined") if (!$file_name);
3280         $hash_base ||= git_get_head_hash($project);
3281         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3282         my %co = parse_commit($hash_base)
3283                 or die_error(undef, "Reading commit failed");
3284         if (!defined $hash) {
3285                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3286                         or die_error(undef, "Error lookup file");
3287         }
3288         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3289                 or die_error(undef, "Open git-annotate failed");
3290         git_header_html();
3291         my $formats_nav =
3292                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3293                         "blob") .
3294                 " | " .
3295                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3296                         "history") .
3297                 " | " .
3298                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3299                         "HEAD");
3300         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3301         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3302         git_print_page_path($file_name, 'blob', $hash_base);
3303         print "<div class=\"page_body\">\n";
3304         print <<HTML;
3305 <table class="blame">
3306   <tr>
3307     <th>Commit</th>
3308     <th>Age</th>
3309     <th>Author</th>
3310     <th>Line</th>
3311     <th>Data</th>
3312   </tr>
3313 HTML
3314         my @line_class = (qw(light dark));
3315         my $line_class_len = scalar (@line_class);
3316         my $line_class_num = $#line_class;
3317         while (my $line = <$fd>) {
3318                 my $long_rev;
3319                 my $short_rev;
3320                 my $author;
3321                 my $time;
3322                 my $lineno;
3323                 my $data;
3324                 my $age;
3325                 my $age_str;
3326                 my $age_class;
3327
3328                 chomp $line;
3329                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3330
3331                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3332                         $long_rev = $1;
3333                         $author   = $2;
3334                         $time     = $3;
3335                         $lineno   = $4;
3336                         $data     = $5;
3337                 } else {
3338                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3339                         next;
3340                 }
3341                 $short_rev  = substr ($long_rev, 0, 8);
3342                 $age        = time () - $time;
3343                 $age_str    = age_string ($age);
3344                 $age_str    =~ s/ /&nbsp;/g;
3345                 $age_class  = age_class($age);
3346                 $author     = esc_html ($author);
3347                 $author     =~ s/ /&nbsp;/g;
3348
3349                 $data = untabify($data);
3350                 $data = esc_html ($data);
3351
3352                 print <<HTML;
3353   <tr class="$line_class[$line_class_num]">
3354     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3355     <td class="$age_class">$age_str</td>
3356     <td>$author</td>
3357     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3358     <td class="pre">$data</td>
3359   </tr>
3360 HTML
3361         } # while (my $line = <$fd>)
3362         print "</table>\n\n";
3363         close $fd
3364                 or print "Reading blob failed.\n";
3365         print "</div>";
3366         git_footer_html();
3367 }
3368
3369 sub git_tags {
3370         my $head = git_get_head_hash($project);
3371         git_header_html();
3372         git_print_page_nav('','', $head,undef,$head);
3373         git_print_header_div('summary', $project);
3374
3375         my @tagslist = git_get_tags_list();
3376         if (@tagslist) {
3377                 git_tags_body(\@tagslist);
3378         }
3379         git_footer_html();
3380 }
3381
3382 sub git_heads {
3383         my $head = git_get_head_hash($project);
3384         git_header_html();
3385         git_print_page_nav('','', $head,undef,$head);
3386         git_print_header_div('summary', $project);
3387
3388         my @headslist = git_get_heads_list();
3389         if (@headslist) {
3390                 git_heads_body(\@headslist, $head);
3391         }
3392         git_footer_html();
3393 }
3394
3395 sub git_blob_plain {
3396         my $expires;
3397
3398         if (!defined $hash) {
3399                 if (defined $file_name) {
3400                         my $base = $hash_base || git_get_head_hash($project);
3401                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3402                                 or die_error(undef, "Error lookup file");
3403                 } else {
3404                         die_error(undef, "No file name defined");
3405                 }
3406         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3407                 # blobs defined by non-textual hash id's can be cached
3408                 $expires = "+1d";
3409         }
3410
3411         my $type = shift;
3412         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3413                 or die_error(undef, "Couldn't cat $file_name, $hash");
3414
3415         $type ||= blob_mimetype($fd, $file_name);
3416
3417         # save as filename, even when no $file_name is given
3418         my $save_as = "$hash";
3419         if (defined $file_name) {
3420                 $save_as = $file_name;
3421         } elsif ($type =~ m/^text\//) {
3422                 $save_as .= '.txt';
3423         }
3424
3425         print $cgi->header(
3426                 -type => "$type",
3427                 -expires=>$expires,
3428                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3429         undef $/;
3430         binmode STDOUT, ':raw';
3431         print <$fd>;
3432         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3433         $/ = "\n";
3434         close $fd;
3435 }
3436
3437 sub git_blob {
3438         my $expires;
3439
3440         if (!defined $hash) {
3441                 if (defined $file_name) {
3442                         my $base = $hash_base || git_get_head_hash($project);
3443                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3444                                 or die_error(undef, "Error lookup file");
3445                 } else {
3446                         die_error(undef, "No file name defined");
3447                 }
3448         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3449                 # blobs defined by non-textual hash id's can be cached
3450                 $expires = "+1d";
3451         }
3452
3453         my ($have_blame) = gitweb_check_feature('blame');
3454         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3455                 or die_error(undef, "Couldn't cat $file_name, $hash");
3456         my $mimetype = blob_mimetype($fd, $file_name);
3457         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3458                 close $fd;
3459                 return git_blob_plain($mimetype);
3460         }
3461         # we can have blame only for text/* mimetype
3462         $have_blame &&= ($mimetype =~ m!^text/!);
3463
3464         git_header_html(undef, $expires);
3465         my $formats_nav = '';
3466         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3467                 if (defined $file_name) {
3468                         if ($have_blame) {
3469                                 $formats_nav .=
3470                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3471                                                                hash=>$hash, file_name=>$file_name)},
3472                                                 "blame") .
3473                                         " | ";
3474                         }
3475                         $formats_nav .=
3476                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3477                                                        hash=>$hash, file_name=>$file_name)},
3478                                         "history") .
3479                                 " | " .
3480                                 $cgi->a({-href => href(action=>"blob_plain",
3481                                                        hash=>$hash, file_name=>$file_name)},
3482                                         "raw") .
3483                                 " | " .
3484                                 $cgi->a({-href => href(action=>"blob",
3485                                                        hash_base=>"HEAD", file_name=>$file_name)},
3486                                         "HEAD");
3487                 } else {
3488                         $formats_nav .=
3489                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3490                 }
3491                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3492                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3493         } else {
3494                 print "<div class=\"page_nav\">\n" .
3495                       "<br/><br/></div>\n" .
3496                       "<div class=\"title\">$hash</div>\n";
3497         }
3498         git_print_page_path($file_name, "blob", $hash_base);
3499         print "<div class=\"page_body\">\n";
3500         if ($mimetype =~ m!^text/!) {
3501                 my $nr;
3502                 while (my $line = <$fd>) {
3503                         chomp $line;
3504                         $nr++;
3505                         $line = untabify($line);
3506                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3507                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3508                 }
3509         } elsif ($mimetype =~ m!^image/!) {
3510                 print qq!<img type="$mimetype"!;
3511                 if ($file_name) {
3512                         print qq! alt="$file_name" title="$file_name"!;
3513                 }
3514                 print qq! src="! .
3515                       href(action=>"blob_plain", hash=>$hash,
3516                            hash_base=>$hash_base, file_name=>$file_name) .
3517                       qq!" />\n!;
3518         }
3519         close $fd
3520                 or print "Reading blob failed.\n";
3521         print "</div>";
3522         git_footer_html();
3523 }
3524
3525 sub git_tree {
3526         my $have_snapshot = gitweb_have_snapshot();
3527
3528         if (!defined $hash_base) {
3529                 $hash_base = "HEAD";
3530         }
3531         if (!defined $hash) {
3532                 if (defined $file_name) {
3533                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3534                 } else {
3535                         $hash = $hash_base;
3536                 }
3537         }
3538         $/ = "\0";
3539         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3540                 or die_error(undef, "Open git-ls-tree failed");
3541         my @entries = map { chomp; $_ } <$fd>;
3542         close $fd or die_error(undef, "Reading tree failed");
3543         $/ = "\n";
3544
3545         my $refs = git_get_references();
3546         my $ref = format_ref_marker($refs, $hash_base);
3547         git_header_html();
3548         my $basedir = '';
3549         my ($have_blame) = gitweb_check_feature('blame');
3550         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3551                 my @views_nav = ();
3552                 if (defined $file_name) {
3553                         push @views_nav,
3554                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3555                                                        hash=>$hash, file_name=>$file_name)},
3556                                         "history"),
3557                                 $cgi->a({-href => href(action=>"tree",
3558                                                        hash_base=>"HEAD", file_name=>$file_name)},
3559                                         "HEAD"),
3560                 }
3561                 if ($have_snapshot) {
3562                         # FIXME: Should be available when we have no hash base as well.
3563                         push @views_nav,
3564                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3565                                         "snapshot");
3566                 }
3567                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3568                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3569         } else {
3570                 undef $hash_base;
3571                 print "<div class=\"page_nav\">\n";
3572                 print "<br/><br/></div>\n";
3573                 print "<div class=\"title\">$hash</div>\n";
3574         }
3575         if (defined $file_name) {
3576                 $basedir = $file_name;
3577                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3578                         $basedir .= '/';
3579                 }
3580         }
3581         git_print_page_path($file_name, 'tree', $hash_base);
3582         print "<div class=\"page_body\">\n";
3583         print "<table cellspacing=\"0\">\n";
3584         my $alternate = 1;
3585         # '..' (top directory) link if possible
3586         if (defined $hash_base &&
3587             defined $file_name && $file_name =~ m![^/]+$!) {
3588                 if ($alternate) {
3589                         print "<tr class=\"dark\">\n";
3590                 } else {
3591                         print "<tr class=\"light\">\n";
3592                 }
3593                 $alternate ^= 1;
3594
3595                 my $up = $file_name;
3596                 $up =~ s!/?[^/]+$!!;
3597                 undef $up unless $up;
3598                 # based on git_print_tree_entry
3599                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3600                 print '<td class="list">';
3601                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3602                                              file_name=>$up)},
3603                               "..");
3604                 print "</td>\n";
3605                 print "<td class=\"link\"></td>\n";
3606
3607                 print "</tr>\n";
3608         }
3609         foreach my $line (@entries) {
3610                 my %t = parse_ls_tree_line($line, -z => 1);
3611
3612                 if ($alternate) {
3613                         print "<tr class=\"dark\">\n";
3614                 } else {
3615                         print "<tr class=\"light\">\n";
3616                 }
3617                 $alternate ^= 1;
3618
3619                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3620
3621                 print "</tr>\n";
3622         }
3623         print "</table>\n" .
3624               "</div>";
3625         git_footer_html();
3626 }
3627
3628 sub git_snapshot {
3629         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3630         my $have_snapshot = (defined $ctype && defined $suffix);
3631         if (!$have_snapshot) {
3632                 die_error('403 Permission denied', "Permission denied");
3633         }
3634
3635         if (!defined $hash) {
3636                 $hash = git_get_head_hash($project);
3637         }
3638
3639         my $filename = to_utf8(basename($project)) . "-$hash.tar.$suffix";
3640
3641         print $cgi->header(
3642                 -type => "application/$ctype",
3643                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3644                 -status => '200 OK');
3645
3646         my $git = git_cmd_str();
3647         my $name = $project;
3648         $name =~ s/\047/\047\\\047\047/g;
3649         open my $fd, "-|",
3650                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3651                 or die_error(undef, "Execute git-tar-tree failed");
3652         binmode STDOUT, ':raw';
3653         print <$fd>;
3654         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3655         close $fd;
3656
3657 }
3658
3659 sub git_log {
3660         my $head = git_get_head_hash($project);
3661         if (!defined $hash) {
3662                 $hash = $head;
3663         }
3664         if (!defined $page) {
3665                 $page = 0;
3666         }
3667         my $refs = git_get_references();
3668
3669         my @commitlist = parse_commits($hash, 101, (100 * $page));
3670
3671         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3672
3673         git_header_html();
3674         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3675
3676         if (!@commitlist) {
3677                 my %co = parse_commit($hash);
3678
3679                 git_print_header_div('summary', $project);
3680                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3681         }
3682         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3683         for (my $i = 0; $i <= $to; $i++) {
3684                 my %co = %{$commitlist[$i]};
3685                 next if !%co;
3686                 my $commit = $co{'id'};
3687                 my $ref = format_ref_marker($refs, $commit);
3688                 my %ad = parse_date($co{'author_epoch'});
3689                 git_print_header_div('commit',
3690                                "<span class=\"age\">$co{'age_string'}</span>" .
3691                                esc_html($co{'title'}) . $ref,
3692                                $commit);
3693                 print "<div class=\"title_text\">\n" .
3694                       "<div class=\"log_link\">\n" .
3695                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3696                       " | " .
3697                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3698                       " | " .
3699                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3700                       "<br/>\n" .
3701                       "</div>\n" .
3702                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3703                       "</div>\n";
3704
3705                 print "<div class=\"log_body\">\n";
3706                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3707                 print "</div>\n";
3708         }
3709         if ($#commitlist >= 100) {
3710                 print "<div class=\"page_nav\">\n";
3711                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3712                                -accesskey => "n", -title => "Alt-n"}, "next");
3713                 print "</div>\n";
3714         }
3715         git_footer_html();
3716 }
3717
3718 sub git_commit {
3719         $hash ||= $hash_base || "HEAD";
3720         my %co = parse_commit($hash);
3721         if (!%co) {
3722                 die_error(undef, "Unknown commit object");
3723         }
3724         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3725         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3726
3727         my $parent  = $co{'parent'};
3728         my $parents = $co{'parents'}; # listref
3729
3730         # we need to prepare $formats_nav before any parameter munging
3731         my $formats_nav;
3732         if (!defined $parent) {
3733                 # --root commitdiff
3734                 $formats_nav .= '(initial)';
3735         } elsif (@$parents == 1) {
3736                 # single parent commit
3737                 $formats_nav .=
3738                         '(parent: ' .
3739                         $cgi->a({-href => href(action=>"commit",
3740                                                hash=>$parent)},
3741                                 esc_html(substr($parent, 0, 7))) .
3742                         ')';
3743         } else {
3744                 # merge commit
3745                 $formats_nav .=
3746                         '(merge: ' .
3747                         join(' ', map {
3748                                 $cgi->a({-href => href(action=>"commit",
3749                                                        hash=>$_)},
3750                                         esc_html(substr($_, 0, 7)));
3751                         } @$parents ) .
3752                         ')';
3753         }
3754
3755         if (!defined $parent) {
3756                 $parent = "--root";
3757         }
3758         my @difftree;
3759         if (@$parents <= 1) {
3760                 # difftree output is not printed for merges
3761                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3762                         @diff_opts, $parent, $hash, "--"
3763                         or die_error(undef, "Open git-diff-tree failed");
3764                 @difftree = map { chomp; $_ } <$fd>;
3765                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3766         }
3767
3768         # non-textual hash id's can be cached
3769         my $expires;
3770         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3771                 $expires = "+1d";
3772         }
3773         my $refs = git_get_references();
3774         my $ref = format_ref_marker($refs, $co{'id'});
3775
3776         my $have_snapshot = gitweb_have_snapshot();
3777
3778         git_header_html(undef, $expires);
3779         git_print_page_nav('commit', '',
3780                            $hash, $co{'tree'}, $hash,
3781                            $formats_nav);
3782
3783         if (defined $co{'parent'}) {
3784                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3785         } else {
3786                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3787         }
3788         print "<div class=\"title_text\">\n" .
3789               "<table cellspacing=\"0\">\n";
3790         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3791               "<tr>" .
3792               "<td></td><td> $ad{'rfc2822'}";
3793         if ($ad{'hour_local'} < 6) {
3794                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3795                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3796         } else {
3797                 printf(" (%02d:%02d %s)",
3798                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3799         }
3800         print "</td>" .
3801               "</tr>\n";
3802         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3803         print "<tr><td></td><td> $cd{'rfc2822'}" .
3804               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3805               "</td></tr>\n";
3806         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3807         print "<tr>" .
3808               "<td>tree</td>" .
3809               "<td class=\"sha1\">" .
3810               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3811                        class => "list"}, $co{'tree'}) .
3812               "</td>" .
3813               "<td class=\"link\">" .
3814               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3815                       "tree");
3816         if ($have_snapshot) {
3817                 print " | " .
3818                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3819         }
3820         print "</td>" .
3821               "</tr>\n";
3822
3823         foreach my $par (@$parents) {
3824                 print "<tr>" .
3825                       "<td>parent</td>" .
3826                       "<td class=\"sha1\">" .
3827                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3828                                class => "list"}, $par) .
3829                       "</td>" .
3830                       "<td class=\"link\">" .
3831                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3832                       " | " .
3833                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3834                       "</td>" .
3835                       "</tr>\n";
3836         }
3837         print "</table>".
3838               "</div>\n";
3839
3840         print "<div class=\"page_body\">\n";
3841         git_print_log($co{'comment'});
3842         print "</div>\n";
3843
3844         if (@$parents <= 1) {
3845                 # do not output difftree/whatchanged for merges
3846                 git_difftree_body(\@difftree, $hash, $parent);
3847         }
3848
3849         git_footer_html();
3850 }
3851
3852 sub git_object {
3853         # object is defined by:
3854         # - hash or hash_base alone
3855         # - hash_base and file_name
3856         my $type;
3857
3858         # - hash or hash_base alone
3859         if ($hash || ($hash_base && !defined $file_name)) {
3860                 my $object_id = $hash || $hash_base;
3861
3862                 my $git_command = git_cmd_str();
3863                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3864                         or die_error('404 Not Found', "Object does not exist");
3865                 $type = <$fd>;
3866                 chomp $type;
3867                 close $fd
3868                         or die_error('404 Not Found', "Object does not exist");
3869
3870         # - hash_base and file_name
3871         } elsif ($hash_base && defined $file_name) {
3872                 $file_name =~ s,/+$,,;
3873
3874                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3875                         or die_error('404 Not Found', "Base object does not exist");
3876
3877                 # here errors should not hapen
3878                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3879                         or die_error(undef, "Open git-ls-tree failed");
3880                 my $line = <$fd>;
3881                 close $fd;
3882
3883                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3884                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3885                         die_error('404 Not Found', "File or directory for given base does not exist");
3886                 }
3887                 $type = $2;
3888                 $hash = $3;
3889         } else {
3890                 die_error('404 Not Found', "Not enough information to find object");
3891         }
3892
3893         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3894                                           hash=>$hash, hash_base=>$hash_base,
3895                                           file_name=>$file_name),
3896                              -status => '302 Found');
3897 }
3898
3899 sub git_blobdiff {
3900         my $format = shift || 'html';
3901
3902         my $fd;
3903         my @difftree;
3904         my %diffinfo;
3905         my $expires;
3906
3907         # preparing $fd and %diffinfo for git_patchset_body
3908         # new style URI
3909         if (defined $hash_base && defined $hash_parent_base) {
3910                 if (defined $file_name) {
3911                         # read raw output
3912                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3913                                 $hash_parent_base, $hash_base,
3914                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
3915                                 or die_error(undef, "Open git-diff-tree failed");
3916                         @difftree = map { chomp; $_ } <$fd>;
3917                         close $fd
3918                                 or die_error(undef, "Reading git-diff-tree failed");
3919                         @difftree
3920                                 or die_error('404 Not Found', "Blob diff not found");
3921
3922                 } elsif (defined $hash &&
3923                          $hash =~ /[0-9a-fA-F]{40}/) {
3924                         # try to find filename from $hash
3925
3926                         # read filtered raw output
3927                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3928                                 $hash_parent_base, $hash_base, "--"
3929                                 or die_error(undef, "Open git-diff-tree failed");
3930                         @difftree =
3931                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3932                                 # $hash == to_id
3933                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3934                                 map { chomp; $_ } <$fd>;
3935                         close $fd
3936                                 or die_error(undef, "Reading git-diff-tree failed");
3937                         @difftree
3938                                 or die_error('404 Not Found', "Blob diff not found");
3939
3940                 } else {
3941                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3942                 }
3943
3944                 if (@difftree > 1) {
3945                         die_error('404 Not Found', "Ambiguous blob diff specification");
3946                 }
3947
3948                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3949                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3950                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3951
3952                 $hash_parent ||= $diffinfo{'from_id'};
3953                 $hash        ||= $diffinfo{'to_id'};
3954
3955                 # non-textual hash id's can be cached
3956                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3957                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3958                         $expires = '+1d';
3959                 }
3960
3961                 # open patch output
3962                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3963                         '-p', ($format eq 'html' ? "--full-index" : ()),
3964                         $hash_parent_base, $hash_base,
3965                         "--", (defined $file_parent ? $file_parent : ()), $file_name
3966                         or die_error(undef, "Open git-diff-tree failed");
3967         }
3968
3969         # old/legacy style URI
3970         if (!%diffinfo && # if new style URI failed
3971             defined $hash && defined $hash_parent) {
3972                 # fake git-diff-tree raw output
3973                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3974                 $diffinfo{'from_id'} = $hash_parent;
3975                 $diffinfo{'to_id'}   = $hash;
3976                 if (defined $file_name) {
3977                         if (defined $file_parent) {
3978                                 $diffinfo{'status'} = '2';
3979                                 $diffinfo{'from_file'} = $file_parent;
3980                                 $diffinfo{'to_file'}   = $file_name;
3981                         } else { # assume not renamed
3982                                 $diffinfo{'status'} = '1';
3983                                 $diffinfo{'from_file'} = $file_name;
3984                                 $diffinfo{'to_file'}   = $file_name;
3985                         }
3986                 } else { # no filename given
3987                         $diffinfo{'status'} = '2';
3988                         $diffinfo{'from_file'} = $hash_parent;
3989                         $diffinfo{'to_file'}   = $hash;
3990                 }
3991
3992                 # non-textual hash id's can be cached
3993                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3994                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3995                         $expires = '+1d';
3996                 }
3997
3998                 # open patch output
3999                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4000                         '-p', ($format eq 'html' ? "--full-index" : ()),
4001                         $hash_parent, $hash, "--"
4002                         or die_error(undef, "Open git-diff failed");
4003         } else  {
4004                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4005                         unless %diffinfo;
4006         }
4007
4008         # header
4009         if ($format eq 'html') {
4010                 my $formats_nav =
4011                         $cgi->a({-href => href(action=>"blobdiff_plain",
4012                                                hash=>$hash, hash_parent=>$hash_parent,
4013                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4014                                                file_name=>$file_name, file_parent=>$file_parent)},
4015                                 "raw");
4016                 git_header_html(undef, $expires);
4017                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4018                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4019                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4020                 } else {
4021                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4022                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4023                 }
4024                 if (defined $file_name) {
4025                         git_print_page_path($file_name, "blob", $hash_base);
4026                 } else {
4027                         print "<div class=\"page_path\"></div>\n";
4028                 }
4029
4030         } elsif ($format eq 'plain') {
4031                 print $cgi->header(
4032                         -type => 'text/plain',
4033                         -charset => 'utf-8',
4034                         -expires => $expires,
4035                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4036
4037                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4038
4039         } else {
4040                 die_error(undef, "Unknown blobdiff format");
4041         }
4042
4043         # patch
4044         if ($format eq 'html') {
4045                 print "<div class=\"page_body\">\n";
4046
4047                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4048                 close $fd;
4049
4050                 print "</div>\n"; # class="page_body"
4051                 git_footer_html();
4052
4053         } else {
4054                 while (my $line = <$fd>) {
4055                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4056                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4057
4058                         print $line;
4059
4060                         last if $line =~ m!^\+\+\+!;
4061                 }
4062                 local $/ = undef;
4063                 print <$fd>;
4064                 close $fd;
4065         }
4066 }
4067
4068 sub git_blobdiff_plain {
4069         git_blobdiff('plain');
4070 }
4071
4072 sub git_commitdiff {
4073         my $format = shift || 'html';
4074         $hash ||= $hash_base || "HEAD";
4075         my %co = parse_commit($hash);
4076         if (!%co) {
4077                 die_error(undef, "Unknown commit object");
4078         }
4079
4080         # we need to prepare $formats_nav before any parameter munging
4081         my $formats_nav;
4082         if ($format eq 'html') {
4083                 $formats_nav =
4084                         $cgi->a({-href => href(action=>"commitdiff_plain",
4085                                                hash=>$hash, hash_parent=>$hash_parent)},
4086                                 "raw");
4087
4088                 if (defined $hash_parent) {
4089                         # commitdiff with two commits given
4090                         my $hash_parent_short = $hash_parent;
4091                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4092                                 $hash_parent_short = substr($hash_parent, 0, 7);
4093                         }
4094                         $formats_nav .=
4095                                 ' (from: ' .
4096                                 $cgi->a({-href => href(action=>"commitdiff",
4097                                                        hash=>$hash_parent)},
4098                                         esc_html($hash_parent_short)) .
4099                                 ')';
4100                 } elsif (!$co{'parent'}) {
4101                         # --root commitdiff
4102                         $formats_nav .= ' (initial)';
4103                 } elsif (scalar @{$co{'parents'}} == 1) {
4104                         # single parent commit
4105                         $formats_nav .=
4106                                 ' (parent: ' .
4107                                 $cgi->a({-href => href(action=>"commitdiff",
4108                                                        hash=>$co{'parent'})},
4109                                         esc_html(substr($co{'parent'}, 0, 7))) .
4110                                 ')';
4111                 } else {
4112                         # merge commit
4113                         $formats_nav .=
4114                                 ' (merge: ' .
4115                                 join(' ', map {
4116                                         $cgi->a({-href => href(action=>"commitdiff",
4117                                                                hash=>$_)},
4118                                                 esc_html(substr($_, 0, 7)));
4119                                 } @{$co{'parents'}} ) .
4120                                 ')';
4121                 }
4122         }
4123
4124         if (!defined $hash_parent) {
4125                 $hash_parent = $co{'parent'} || '--root';
4126         }
4127
4128         # read commitdiff
4129         my $fd;
4130         my @difftree;
4131         if ($format eq 'html') {
4132                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4133                         "--no-commit-id", "--patch-with-raw", "--full-index",
4134                         $hash_parent, $hash, "--"
4135                         or die_error(undef, "Open git-diff-tree failed");
4136
4137                 while (my $line = <$fd>) {
4138                         chomp $line;
4139                         # empty line ends raw part of diff-tree output
4140                         last unless $line;
4141                         push @difftree, $line;
4142                 }
4143
4144         } elsif ($format eq 'plain') {
4145                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4146                         '-p', $hash_parent, $hash, "--"
4147                         or die_error(undef, "Open git-diff-tree failed");
4148
4149         } else {
4150                 die_error(undef, "Unknown commitdiff format");
4151         }
4152
4153         # non-textual hash id's can be cached
4154         my $expires;
4155         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4156                 $expires = "+1d";
4157         }
4158
4159         # write commit message
4160         if ($format eq 'html') {
4161                 my $refs = git_get_references();
4162                 my $ref = format_ref_marker($refs, $co{'id'});
4163
4164                 git_header_html(undef, $expires);
4165                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4166                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4167                 git_print_authorship(\%co);
4168                 print "<div class=\"page_body\">\n";
4169                 if (@{$co{'comment'}} > 1) {
4170                         print "<div class=\"log\">\n";
4171                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4172                         print "</div>\n"; # class="log"
4173                 }
4174
4175         } elsif ($format eq 'plain') {
4176                 my $refs = git_get_references("tags");
4177                 my $tagname = git_get_rev_name_tags($hash);
4178                 my $filename = basename($project) . "-$hash.patch";
4179
4180                 print $cgi->header(
4181                         -type => 'text/plain',
4182                         -charset => 'utf-8',
4183                         -expires => $expires,
4184                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4185                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4186                 print <<TEXT;
4187 From: $co{'author'}
4188 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4189 Subject: $co{'title'}
4190 TEXT
4191                 print "X-Git-Tag: $tagname\n" if $tagname;
4192                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4193
4194                 foreach my $line (@{$co{'comment'}}) {
4195                         print "$line\n";
4196                 }
4197                 print "---\n\n";
4198         }
4199
4200         # write patch
4201         if ($format eq 'html') {
4202                 git_difftree_body(\@difftree, $hash, $hash_parent);
4203                 print "<br/>\n";
4204
4205                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4206                 close $fd;
4207                 print "</div>\n"; # class="page_body"
4208                 git_footer_html();
4209
4210         } elsif ($format eq 'plain') {
4211                 local $/ = undef;
4212                 print <$fd>;
4213                 close $fd
4214                         or print "Reading git-diff-tree failed\n";
4215         }
4216 }
4217
4218 sub git_commitdiff_plain {
4219         git_commitdiff('plain');
4220 }
4221
4222 sub git_history {
4223         if (!defined $hash_base) {
4224                 $hash_base = git_get_head_hash($project);
4225         }
4226         if (!defined $page) {
4227                 $page = 0;
4228         }
4229         my $ftype;
4230         my %co = parse_commit($hash_base);
4231         if (!%co) {
4232                 die_error(undef, "Unknown commit object");
4233         }
4234
4235         my $refs = git_get_references();
4236         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4237
4238         if (!defined $hash && defined $file_name) {
4239                 $hash = git_get_hash_by_path($hash_base, $file_name);
4240         }
4241         if (defined $hash) {
4242                 $ftype = git_get_type($hash);
4243         }
4244
4245         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4246
4247         my $paging_nav = '';
4248         if ($page > 0) {
4249                 $paging_nav .=
4250                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4251                                                file_name=>$file_name)},
4252                                 "first");
4253                 $paging_nav .= " &sdot; " .
4254                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4255                                                file_name=>$file_name, page=>$page-1),
4256                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4257         } else {
4258                 $paging_nav .= "first";
4259                 $paging_nav .= " &sdot; prev";
4260         }
4261         if ($#commitlist >= 100) {
4262                 $paging_nav .= " &sdot; " .
4263                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4264                                                file_name=>$file_name, page=>$page+1),
4265                                  -accesskey => "n", -title => "Alt-n"}, "next");
4266         } else {
4267                 $paging_nav .= " &sdot; next";
4268         }
4269         my $next_link = '';
4270         if ($#commitlist >= 100) {
4271                 $next_link =
4272                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4273                                                file_name=>$file_name, page=>$page+1),
4274                                  -accesskey => "n", -title => "Alt-n"}, "next");
4275         }
4276
4277         git_header_html();
4278         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4279         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4280         git_print_page_path($file_name, $ftype, $hash_base);
4281
4282         git_history_body(\@commitlist, 0, 99,
4283                          $refs, $hash_base, $ftype, $next_link);
4284
4285         git_footer_html();
4286 }
4287
4288 sub git_search {
4289         my ($have_search) = gitweb_check_feature('search');
4290         if (!$have_search) {
4291                 die_error('403 Permission denied', "Permission denied");
4292         }
4293         if (!defined $searchtext) {
4294                 die_error(undef, "Text field empty");
4295         }
4296         if (!defined $hash) {
4297                 $hash = git_get_head_hash($project);
4298         }
4299         my %co = parse_commit($hash);
4300         if (!%co) {
4301                 die_error(undef, "Unknown commit object");
4302         }
4303         if (!defined $page) {
4304                 $page = 0;
4305         }
4306
4307         $searchtype ||= 'commit';
4308         if ($searchtype eq 'pickaxe') {
4309                 # pickaxe may take all resources of your box and run for several minutes
4310                 # with every query - so decide by yourself how public you make this feature
4311                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4312                 if (!$have_pickaxe) {
4313                         die_error('403 Permission denied', "Permission denied");
4314                 }
4315         }
4316
4317         git_header_html();
4318
4319         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4320                 my $greptype;
4321                 if ($searchtype eq 'commit') {
4322                         $greptype = "--grep=";
4323                 } elsif ($searchtype eq 'author') {
4324                         $greptype = "--author=";
4325                 } elsif ($searchtype eq 'committer') {
4326                         $greptype = "--committer=";
4327                 }
4328                 $greptype .= $searchtext;
4329                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4330
4331                 my $paging_nav = '';
4332                 if ($page > 0) {
4333                         $paging_nav .=
4334                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4335                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4336                                         "first");
4337                         $paging_nav .= " &sdot; " .
4338                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4339                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4340                                                        page=>$page-1),
4341                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4342                 } else {
4343                         $paging_nav .= "first";
4344                         $paging_nav .= " &sdot; prev";
4345                 }
4346                 if ($#commitlist >= 100) {
4347                         $paging_nav .= " &sdot; " .
4348                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4349                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4350                                                        page=>$page+1),
4351                                          -accesskey => "n", -title => "Alt-n"}, "next");
4352                 } else {
4353                         $paging_nav .= " &sdot; next";
4354                 }
4355                 my $next_link = '';
4356                 if ($#commitlist >= 100) {
4357                         $next_link =
4358                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4359                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4360                                                        page=>$page+1),
4361                                          -accesskey => "n", -title => "Alt-n"}, "next");
4362                 }
4363
4364                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4365                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4366                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4367         }
4368
4369         if ($searchtype eq 'pickaxe') {
4370                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4371                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4372
4373                 print "<table cellspacing=\"0\">\n";
4374                 my $alternate = 1;
4375                 $/ = "\n";
4376                 my $git_command = git_cmd_str();
4377                 open my $fd, "-|", "$git_command rev-list $hash | " .
4378                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4379                 undef %co;
4380                 my @files;
4381                 while (my $line = <$fd>) {
4382                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4383                                 my %set;
4384                                 $set{'file'} = $6;
4385                                 $set{'from_id'} = $3;
4386                                 $set{'to_id'} = $4;
4387                                 $set{'id'} = $set{'to_id'};
4388                                 if ($set{'id'} =~ m/0{40}/) {
4389                                         $set{'id'} = $set{'from_id'};
4390                                 }
4391                                 if ($set{'id'} =~ m/0{40}/) {
4392                                         next;
4393                                 }
4394                                 push @files, \%set;
4395                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4396                                 if (%co) {
4397                                         if ($alternate) {
4398                                                 print "<tr class=\"dark\">\n";
4399                                         } else {
4400                                                 print "<tr class=\"light\">\n";
4401                                         }
4402                                         $alternate ^= 1;
4403                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4404                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4405                                               "<td>" .
4406                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4407                                                       -class => "list subject"},
4408                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4409                                         while (my $setref = shift @files) {
4410                                                 my %set = %$setref;
4411                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4412                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4413                                                               -class => "list"},
4414                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4415                                                       "<br/>\n";
4416                                         }
4417                                         print "</td>\n" .
4418                                               "<td class=\"link\">" .
4419                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4420                                               " | " .
4421                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4422                                         print "</td>\n" .
4423                                               "</tr>\n";
4424                                 }
4425                                 %co = parse_commit($1);
4426                         }
4427                 }
4428                 close $fd;
4429
4430                 print "</table>\n";
4431         }
4432         git_footer_html();
4433 }
4434
4435 sub git_search_help {
4436         git_header_html();
4437         git_print_page_nav('','', $hash,$hash,$hash);
4438         print <<EOT;
4439 <dl>
4440 <dt><b>commit</b></dt>
4441 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4442 <dt><b>author</b></dt>
4443 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4444 <dt><b>committer</b></dt>
4445 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4446 EOT
4447         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4448         if ($have_pickaxe) {
4449                 print <<EOT;
4450 <dt><b>pickaxe</b></dt>
4451 <dd>All commits that caused the string to appear or disappear from any file (changes that
4452 added, removed or "modified" the string) will be listed. This search can take a while and
4453 takes a lot of strain on the server, so please use it wisely.</dd>
4454 EOT
4455         }
4456         print "</dl>\n";
4457         git_footer_html();
4458 }
4459
4460 sub git_shortlog {
4461         my $head = git_get_head_hash($project);
4462         if (!defined $hash) {
4463                 $hash = $head;
4464         }
4465         if (!defined $page) {
4466                 $page = 0;
4467         }
4468         my $refs = git_get_references();
4469
4470         my @commitlist = parse_commits($hash, 101, (100 * $page));
4471
4472         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4473         my $next_link = '';
4474         if ($#commitlist >= 100) {
4475                 $next_link =
4476                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4477                                  -accesskey => "n", -title => "Alt-n"}, "next");
4478         }
4479
4480         git_header_html();
4481         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4482         git_print_header_div('summary', $project);
4483
4484         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4485
4486         git_footer_html();
4487 }
4488
4489 ## ......................................................................
4490 ## feeds (RSS, Atom; OPML)
4491
4492 sub git_feed {
4493         my $format = shift || 'atom';
4494         my ($have_blame) = gitweb_check_feature('blame');
4495
4496         # Atom: http://www.atomenabled.org/developers/syndication/
4497         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4498         if ($format ne 'rss' && $format ne 'atom') {
4499                 die_error(undef, "Unknown web feed format");
4500         }
4501
4502         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4503         my $head = $hash || 'HEAD';
4504         my @commitlist = parse_commits($head, 150);
4505
4506         my %latest_commit;
4507         my %latest_date;
4508         my $content_type = "application/$format+xml";
4509         if (defined $cgi->http('HTTP_ACCEPT') &&
4510                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4511                 # browser (feed reader) prefers text/xml
4512                 $content_type = 'text/xml';
4513         }
4514         if (defined($commitlist[0])) {
4515                 %latest_commit = %{$commitlist[0]};
4516                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4517                 print $cgi->header(
4518                         -type => $content_type,
4519                         -charset => 'utf-8',
4520                         -last_modified => $latest_date{'rfc2822'});
4521         } else {
4522                 print $cgi->header(
4523                         -type => $content_type,
4524                         -charset => 'utf-8');
4525         }
4526
4527         # Optimization: skip generating the body if client asks only
4528         # for Last-Modified date.
4529         return if ($cgi->request_method() eq 'HEAD');
4530
4531         # header variables
4532         my $title = "$site_name - $project/$action";
4533         my $feed_type = 'log';
4534         if (defined $hash) {
4535                 $title .= " - '$hash'";
4536                 $feed_type = 'branch log';
4537                 if (defined $file_name) {
4538                         $title .= " :: $file_name";
4539                         $feed_type = 'history';
4540                 }
4541         } elsif (defined $file_name) {
4542                 $title .= " - $file_name";
4543                 $feed_type = 'history';
4544         }
4545         $title .= " $feed_type";
4546         my $descr = git_get_project_description($project);
4547         if (defined $descr) {
4548                 $descr = esc_html($descr);
4549         } else {
4550                 $descr = "$project " .
4551                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4552                          " feed";
4553         }
4554         my $owner = git_get_project_owner($project);
4555         $owner = esc_html($owner);
4556
4557         #header
4558         my $alt_url;
4559         if (defined $file_name) {
4560                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4561         } elsif (defined $hash) {
4562                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4563         } else {
4564                 $alt_url = href(-full=>1, action=>"summary");
4565         }
4566         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4567         if ($format eq 'rss') {
4568                 print <<XML;
4569 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4570 <channel>
4571 XML
4572                 print "<title>$title</title>\n" .
4573                       "<link>$alt_url</link>\n" .
4574                       "<description>$descr</description>\n" .
4575                       "<language>en</language>\n";
4576         } elsif ($format eq 'atom') {
4577                 print <<XML;
4578 <feed xmlns="http://www.w3.org/2005/Atom">
4579 XML
4580                 print "<title>$title</title>\n" .
4581                       "<subtitle>$descr</subtitle>\n" .
4582                       '<link rel="alternate" type="text/html" href="' .
4583                       $alt_url . '" />' . "\n" .
4584                       '<link rel="self" type="' . $content_type . '" href="' .
4585                       $cgi->self_url() . '" />' . "\n" .
4586                       "<id>" . href(-full=>1) . "</id>\n" .
4587                       # use project owner for feed author
4588                       "<author><name>$owner</name></author>\n";
4589                 if (defined $favicon) {
4590                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4591                 }
4592                 if (defined $logo_url) {
4593                         # not twice as wide as tall: 72 x 27 pixels
4594                         print "<logo>" . esc_url($logo) . "</logo>\n";
4595                 }
4596                 if (! %latest_date) {
4597                         # dummy date to keep the feed valid until commits trickle in:
4598                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4599                 } else {
4600                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4601                 }
4602         }
4603
4604         # contents
4605         for (my $i = 0; $i <= $#commitlist; $i++) {
4606                 my %co = %{$commitlist[$i]};
4607                 my $commit = $co{'id'};
4608                 # we read 150, we always show 30 and the ones more recent than 48 hours
4609                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4610                         last;
4611                 }
4612                 my %cd = parse_date($co{'author_epoch'});
4613
4614                 # get list of changed files
4615                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4616                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4617                         or next;
4618                 my @difftree = map { chomp; $_ } <$fd>;
4619                 close $fd
4620                         or next;
4621
4622                 # print element (entry, item)
4623                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4624                 if ($format eq 'rss') {
4625                         print "<item>\n" .
4626                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4627                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4628                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4629                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4630                               "<link>$co_url</link>\n" .
4631                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4632                               "<content:encoded>" .
4633                               "<![CDATA[\n";
4634                 } elsif ($format eq 'atom') {
4635                         print "<entry>\n" .
4636                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4637                               "<updated>$cd{'iso-8601'}</updated>\n" .
4638                               "<author>\n" .
4639                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4640                         if ($co{'author_email'}) {
4641                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4642                         }
4643                         print "</author>\n" .
4644                               # use committer for contributor
4645                               "<contributor>\n" .
4646                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4647                         if ($co{'committer_email'}) {
4648                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4649                         }
4650                         print "</contributor>\n" .
4651                               "<published>$cd{'iso-8601'}</published>\n" .
4652                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4653                               "<id>$co_url</id>\n" .
4654                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4655                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4656                 }
4657                 my $comment = $co{'comment'};
4658                 print "<pre>\n";
4659                 foreach my $line (@$comment) {
4660                         $line = esc_html($line);
4661                         print "$line\n";
4662                 }
4663                 print "</pre><ul>\n";
4664                 foreach my $difftree_line (@difftree) {
4665                         my %difftree = parse_difftree_raw_line($difftree_line);
4666                         next if !$difftree{'from_id'};
4667
4668                         my $file = $difftree{'file'} || $difftree{'to_file'};
4669
4670                         print "<li>" .
4671                               "[" .
4672                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4673                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4674                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4675                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4676                                       -title => "diff"}, 'D');
4677                         if ($have_blame) {
4678                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4679                                                              file_name=>$file, hash_base=>$commit),
4680                                               -title => "blame"}, 'B');
4681                         }
4682                         # if this is not a feed of a file history
4683                         if (!defined $file_name || $file_name ne $file) {
4684                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4685                                                              file_name=>$file, hash=>$commit),
4686                                               -title => "history"}, 'H');
4687                         }
4688                         $file = esc_path($file);
4689                         print "] ".
4690                               "$file</li>\n";
4691                 }
4692                 if ($format eq 'rss') {
4693                         print "</ul>]]>\n" .
4694                               "</content:encoded>\n" .
4695                               "</item>\n";
4696                 } elsif ($format eq 'atom') {
4697                         print "</ul>\n</div>\n" .
4698                               "</content>\n" .
4699                               "</entry>\n";
4700                 }
4701         }
4702
4703         # end of feed
4704         if ($format eq 'rss') {
4705                 print "</channel>\n</rss>\n";
4706         }       elsif ($format eq 'atom') {
4707                 print "</feed>\n";
4708         }
4709 }
4710
4711 sub git_rss {
4712         git_feed('rss');
4713 }
4714
4715 sub git_atom {
4716         git_feed('atom');
4717 }
4718
4719 sub git_opml {
4720         my @list = git_get_projects_list();
4721
4722         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4723         print <<XML;
4724 <?xml version="1.0" encoding="utf-8"?>
4725 <opml version="1.0">
4726 <head>
4727   <title>$site_name OPML Export</title>
4728 </head>
4729 <body>
4730 <outline text="git RSS feeds">
4731 XML
4732
4733         foreach my $pr (@list) {
4734                 my %proj = %$pr;
4735                 my $head = git_get_head_hash($proj{'path'});
4736                 if (!defined $head) {
4737                         next;
4738                 }
4739                 $git_dir = "$projectroot/$proj{'path'}";
4740                 my %co = parse_commit($head);
4741                 if (!%co) {
4742                         next;
4743                 }
4744
4745                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4746                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4747                 my $html = "$my_url?p=$proj{'path'};a=summary";
4748                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4749         }
4750         print <<XML;
4751 </outline>
4752 </body>
4753 </opml>
4754 XML
4755 }