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 # quote unsafe chars, but keep the slash, even when it's not
 568 # correct, but quoted slashes look too horrible in bookmarks
 569 sub esc_param {
 570         my $str = shift;
 571         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 572         $str =~ s/\+/%2B/g;
 573         $str =~ s/ /\+/g;
 574         return $str;
 575 }
 576
 577 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 578 sub esc_url {
 579         my $str = shift;
 580         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 581         $str =~ s/\+/%2B/g;
 582         $str =~ s/ /\+/g;
 583         return $str;
 584 }
 585
 586 # replace invalid utf8 character with SUBSTITUTION sequence
 587 sub esc_html ($;%) {
 588         my $str = shift;
 589         my %opts = @_;
 590
 591         $str = decode_utf8($str);
 592         $str = $cgi->escapeHTML($str);
 593         if ($opts{'-nbsp'}) {
 594                 $str =~ s/ /&nbsp;/g;
 595         }
 596         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 597         return $str;
 598 }
 599
 600 # quote control characters and escape filename to HTML
 601 sub esc_path {
 602         my $str = shift;
 603         my %opts = @_;
 604
 605         $str = decode_utf8($str);
 606         $str = $cgi->escapeHTML($str);
 607         if ($opts{'-nbsp'}) {
 608                 $str =~ s/ /&nbsp;/g;
 609         }
 610         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 611         return $str;
 612 }
 613
 614 # Make control characters "printable", using character escape codes (CEC)
 615 sub quot_cec {
 616         my $cntrl = shift;
 617         my %es = ( # character escape codes, aka escape sequences
 618                    "\t" => '\t',   # tab            (HT)
 619                    "\n" => '\n',   # line feed      (LF)
 620                    "\r" => '\r',   # carrige return (CR)
 621                    "\f" => '\f',   # form feed      (FF)
 622                    "\b" => '\b',   # backspace      (BS)
 623                    "\a" => '\a',   # alarm (bell)   (BEL)
 624                    "\e" => '\e',   # escape         (ESC)
 625                    "\013" => '\v', # vertical tab   (VT)
 626                    "\000" => '\0', # nul character  (NUL)
 627                    );
 628         my $chr = ( (exists $es{$cntrl})
 629                     ? $es{$cntrl}
 630                     : sprintf('\%03o', ord($cntrl)) );
 631         return "<span class=\"cntrl\">$chr</span>";
 632 }
 633
 634 # Alternatively use unicode control pictures codepoints,
 635 # Unicode "printable representation" (PR)
 636 sub quot_upr {
 637         my $cntrl = shift;
 638         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 639         return "<span class=\"cntrl\">$chr</span>";
 640 }
 641
 642 # git may return quoted and escaped filenames
 643 sub unquote {
 644         my $str = shift;
 645
 646         sub unq {
 647                 my $seq = shift;
 648                 my %es = ( # character escape codes, aka escape sequences
 649                         't' => "\t",   # tab            (HT, TAB)
 650                         'n' => "\n",   # newline        (NL)
 651                         'r' => "\r",   # return         (CR)
 652                         'f' => "\f",   # form feed      (FF)
 653                         'b' => "\b",   # backspace      (BS)
 654                         'a' => "\a",   # alarm (bell)   (BEL)
 655                         'e' => "\e",   # escape         (ESC)
 656                         'v' => "\013", # vertical tab   (VT)
 657                 );
 658
 659                 if ($seq =~ m/^[0-7]{1,3}$/) {
 660                         # octal char sequence
 661                         return chr(oct($seq));
 662                 } elsif (exists $es{$seq}) {
 663                         # C escape sequence, aka character escape code
 664                         return $es{$seq}
 665                 }
 666                 # quoted ordinary character
 667                 return $seq;
 668         }
 669
 670         if ($str =~ m/^"(.*)"$/) {
 671                 # needs unquoting
 672                 $str = $1;
 673                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 674         }
 675         return $str;
 676 }
 677
 678 # escape tabs (convert tabs to spaces)
 679 sub untabify {
 680         my $line = shift;
 681
 682         while ((my $pos = index($line, "\t")) != -1) {
 683                 if (my $count = (8 - ($pos % 8))) {
 684                         my $spaces = ' ' x $count;
 685                         $line =~ s/\t/$spaces/;
 686                 }
 687         }
 688
 689         return $line;
 690 }
 691
 692 sub project_in_list {
 693         my $project = shift;
 694         my @list = git_get_projects_list();
 695         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 696 }
 697
 698 ## ----------------------------------------------------------------------
 699 ## HTML aware string manipulation
 700
 701 sub chop_str {
 702         my $str = shift;
 703         my $len = shift;
 704         my $add_len = shift || 10;
 705
 706         # allow only $len chars, but don't cut a word if it would fit in $add_len
 707         # if it doesn't fit, cut it if it's still longer than the dots we would add
 708         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 709         my $body = $1;
 710         my $tail = $2;
 711         if (length($tail) > 4) {
 712                 $tail = " ...";
 713                 $body =~ s/&[^;]*$//; # remove chopped character entities
 714         }
 715         return "$body$tail";
 716 }
 717
 718 ## ----------------------------------------------------------------------
 719 ## functions returning short strings
 720
 721 # CSS class for given age value (in seconds)
 722 sub age_class {
 723         my $age = shift;
 724
 725         if ($age < 60*60*2) {
 726                 return "age0";
 727         } elsif ($age < 60*60*24*2) {
 728                 return "age1";
 729         } else {
 730                 return "age2";
 731         }
 732 }
 733
 734 # convert age in seconds to "nn units ago" string
 735 sub age_string {
 736         my $age = shift;
 737         my $age_str;
 738
 739         if ($age > 60*60*24*365*2) {
 740                 $age_str = (int $age/60/60/24/365);
 741                 $age_str .= " years ago";
 742         } elsif ($age > 60*60*24*(365/12)*2) {
 743                 $age_str = int $age/60/60/24/(365/12);
 744                 $age_str .= " months ago";
 745         } elsif ($age > 60*60*24*7*2) {
 746                 $age_str = int $age/60/60/24/7;
 747                 $age_str .= " weeks ago";
 748         } elsif ($age > 60*60*24*2) {
 749                 $age_str = int $age/60/60/24;
 750                 $age_str .= " days ago";
 751         } elsif ($age > 60*60*2) {
 752                 $age_str = int $age/60/60;
 753                 $age_str .= " hours ago";
 754         } elsif ($age > 60*2) {
 755                 $age_str = int $age/60;
 756                 $age_str .= " min ago";
 757         } elsif ($age > 2) {
 758                 $age_str = int $age;
 759                 $age_str .= " sec ago";
 760         } else {
 761                 $age_str .= " right now";
 762         }
 763         return $age_str;
 764 }
 765
 766 # convert file mode in octal to symbolic file mode string
 767 sub mode_str {
 768         my $mode = oct shift;
 769
 770         if (S_ISDIR($mode & S_IFMT)) {
 771                 return 'drwxr-xr-x';
 772         } elsif (S_ISLNK($mode)) {
 773                 return 'lrwxrwxrwx';
 774         } elsif (S_ISREG($mode)) {
 775                 # git cares only about the executable bit
 776                 if ($mode & S_IXUSR) {
 777                         return '-rwxr-xr-x';
 778                 } else {
 779                         return '-rw-r--r--';
 780                 };
 781         } else {
 782                 return '----------';
 783         }
 784 }
 785
 786 # convert file mode in octal to file type string
 787 sub file_type {
 788         my $mode = shift;
 789
 790         if ($mode !~ m/^[0-7]+$/) {
 791                 return $mode;
 792         } else {
 793                 $mode = oct $mode;
 794         }
 795
 796         if (S_ISDIR($mode & S_IFMT)) {
 797                 return "directory";
 798         } elsif (S_ISLNK($mode)) {
 799                 return "symlink";
 800         } elsif (S_ISREG($mode)) {
 801                 return "file";
 802         } else {
 803                 return "unknown";
 804         }
 805 }
 806
 807 # convert file mode in octal to file type description string
 808 sub file_type_long {
 809         my $mode = shift;
 810
 811         if ($mode !~ m/^[0-7]+$/) {
 812                 return $mode;
 813         } else {
 814                 $mode = oct $mode;
 815         }
 816
 817         if (S_ISDIR($mode & S_IFMT)) {
 818                 return "directory";
 819         } elsif (S_ISLNK($mode)) {
 820                 return "symlink";
 821         } elsif (S_ISREG($mode)) {
 822                 if ($mode & S_IXUSR) {
 823                         return "executable";
 824                 } else {
 825                         return "file";
 826                 };
 827         } else {
 828                 return "unknown";
 829         }
 830 }
 831
 832
 833 ## ----------------------------------------------------------------------
 834 ## functions returning short HTML fragments, or transforming HTML fragments
 835 ## which don't belong to other sections
 836
 837 # format line of commit message.
 838 sub format_log_line_html {
 839         my $line = shift;
 840
 841         $line = esc_html($line, -nbsp=>1);
 842         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 843                 my $hash_text = $1;
 844                 my $link =
 845                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 846                                 -class => "text"}, $hash_text);
 847                 $line =~ s/$hash_text/$link/;
 848         }
 849         return $line;
 850 }
 851
 852 # format marker of refs pointing to given object
 853 sub format_ref_marker {
 854         my ($refs, $id) = @_;
 855         my $markers = '';
 856
 857         if (defined $refs->{$id}) {
 858                 foreach my $ref (@{$refs->{$id}}) {
 859                         my ($type, $name) = qw();
 860                         # e.g. tags/v2.6.11 or heads/next
 861                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 862                                 $type = $1;
 863                                 $name = $2;
 864                         } else {
 865                                 $type = "ref";
 866                                 $name = $ref;
 867                         }
 868
 869                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 870                                     esc_html($name) . "</span>";
 871                 }
 872         }
 873
 874         if ($markers) {
 875                 return ' <span class="refs">'. $markers . '</span>';
 876         } else {
 877                 return "";
 878         }
 879 }
 880
 881 # format, perhaps shortened and with markers, title line
 882 sub format_subject_html {
 883         my ($long, $short, $href, $extra) = @_;
 884         $extra = '' unless defined($extra);
 885
 886         if (length($short) < length($long)) {
 887                 return $cgi->a({-href => $href, -class => "list subject",
 888                                 -title => decode_utf8($long)},
 889                        esc_html($short) . $extra);
 890         } else {
 891                 return $cgi->a({-href => $href, -class => "list subject"},
 892                        esc_html($long)  . $extra);
 893         }
 894 }
 895
 896 # format patch (diff) line (rather not to be used for diff headers)
 897 sub format_diff_line {
 898         my $line = shift;
 899         my ($from, $to) = @_;
 900         my $char = substr($line, 0, 1);
 901         my $diff_class = "";
 902
 903         chomp $line;
 904
 905         if ($char eq '+') {
 906                 $diff_class = " add";
 907         } elsif ($char eq "-") {
 908                 $diff_class = " rem";
 909         } elsif ($char eq "@") {
 910                 $diff_class = " chunk_header";
 911         } elsif ($char eq "\\") {
 912                 $diff_class = " incomplete";
 913         }
 914         $line = untabify($line);
 915         if ($from && $to && $line =~ m/^\@{2} /) {
 916                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 917                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 918
 919                 $from_lines = 0 unless defined $from_lines;
 920                 $to_lines   = 0 unless defined $to_lines;
 921
 922                 if ($from->{'href'}) {
 923                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 924                                              -class=>"list"}, $from_text);
 925                 }
 926                 if ($to->{'href'}) {
 927                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 928                                              -class=>"list"}, $to_text);
 929                 }
 930                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 931                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 932                 return "<div class=\"diff$diff_class\">$line</div>\n";
 933         }
 934         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 935 }
 936
 937 ## ----------------------------------------------------------------------
 938 ## git utility subroutines, invoking git commands
 939
 940 # returns path to the core git executable and the --git-dir parameter as list
 941 sub git_cmd {
 942         return $GIT, '--git-dir='.$git_dir;
 943 }
 944
 945 # returns path to the core git executable and the --git-dir parameter as string
 946 sub git_cmd_str {
 947         return join(' ', git_cmd());
 948 }
 949
 950 # get HEAD ref of given project as hash
 951 sub git_get_head_hash {
 952         my $project = shift;
 953         my $o_git_dir = $git_dir;
 954         my $retval = undef;
 955         $git_dir = "$projectroot/$project";
 956         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 957                 my $head = <$fd>;
 958                 close $fd;
 959                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 960                         $retval = $1;
 961                 }
 962         }
 963         if (defined $o_git_dir) {
 964                 $git_dir = $o_git_dir;
 965         }
 966         return $retval;
 967 }
 968
 969 # get type of given object
 970 sub git_get_type {
 971         my $hash = shift;
 972
 973         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 974         my $type = <$fd>;
 975         close $fd or return;
 976         chomp $type;
 977         return $type;
 978 }
 979
 980 sub git_get_project_config {
 981         my ($key, $type) = @_;
 982
 983         return unless ($key);
 984         $key =~ s/^gitweb\.//;
 985         return if ($key =~ m/\W/);
 986
 987         my @x = (git_cmd(), 'config');
 988         if (defined $type) { push @x, $type; }
 989         push @x, "--get";
 990         push @x, "gitweb.$key";
 991         my $val = qx(@x);
 992         chomp $val;
 993         return ($val);
 994 }
 995
 996 # get hash of given path at given ref
 997 sub git_get_hash_by_path {
 998         my $base = shift;
 999         my $path = shift || return undef;
1000         my $type = shift;
1001
1002         $path =~ s,/+$,,;
1003
1004         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1005                 or die_error(undef, "Open git-ls-tree failed");
1006         my $line = <$fd>;
1007         close $fd or return undef;
1008
1009         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1010         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1011         if (defined $type && $type ne $2) {
1012                 # type doesn't match
1013                 return undef;
1014         }
1015         return $3;
1016 }
1017
1018 ## ......................................................................
1019 ## git utility functions, directly accessing git repository
1020
1021 sub git_get_project_description {
1022         my $path = shift;
1023
1024         open my $fd, "$projectroot/$path/description" or return undef;
1025         my $descr = <$fd>;
1026         close $fd;
1027         chomp $descr;
1028         return $descr;
1029 }
1030
1031 sub git_get_project_url_list {
1032         my $path = shift;
1033
1034         open my $fd, "$projectroot/$path/cloneurl" or return;
1035         my @git_project_url_list = map { chomp; $_ } <$fd>;
1036         close $fd;
1037
1038         return wantarray ? @git_project_url_list : \@git_project_url_list;
1039 }
1040
1041 sub git_get_projects_list {
1042         my ($filter) = @_;
1043         my @list;
1044
1045         $filter ||= '';
1046         $filter =~ s/\.git$//;
1047
1048         my ($check_forks) = gitweb_check_feature('forks');
1049
1050         if (-d $projects_list) {
1051                 # search in directory
1052                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1053                 # remove the trailing "/"
1054                 $dir =~ s!/+$!!;
1055                 my $pfxlen = length("$dir");
1056
1057                 File::Find::find({
1058                         follow_fast => 1, # follow symbolic links
1059                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1060                         wanted => sub {
1061                                 # skip project-list toplevel, if we get it.
1062                                 return if (m!^[/.]$!);
1063                                 # only directories can be git repositories
1064                                 return unless (-d $_);
1065
1066                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1067                                 # we check related file in $projectroot
1068                                 if ($check_forks and $subdir =~ m#/.#) {
1069                                         $File::Find::prune = 1;
1070                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1071                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1072                                         $File::Find::prune = 1;
1073                                 }
1074                         },
1075                 }, "$dir");
1076
1077         } elsif (-f $projects_list) {
1078                 # read from file(url-encoded):
1079                 # 'git%2Fgit.git Linus+Torvalds'
1080                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1081                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1082                 my %paths;
1083                 open my ($fd), $projects_list or return;
1084         PROJECT:
1085                 while (my $line = <$fd>) {
1086                         chomp $line;
1087                         my ($path, $owner) = split ' ', $line;
1088                         $path = unescape($path);
1089                         $owner = unescape($owner);
1090                         if (!defined $path) {
1091                                 next;
1092                         }
1093                         if ($filter ne '') {
1094                                 # looking for forks;
1095                                 my $pfx = substr($path, 0, length($filter));
1096                                 if ($pfx ne $filter) {
1097                                         next PROJECT;
1098                                 }
1099                                 my $sfx = substr($path, length($filter));
1100                                 if ($sfx !~ /^\/.*\.git$/) {
1101                                         next PROJECT;
1102                                 }
1103                         } elsif ($check_forks) {
1104                         PATH:
1105                                 foreach my $filter (keys %paths) {
1106                                         # looking for forks;
1107                                         my $pfx = substr($path, 0, length($filter));
1108                                         if ($pfx ne $filter) {
1109                                                 next PATH;
1110                                         }
1111                                         my $sfx = substr($path, length($filter));
1112                                         if ($sfx !~ /^\/.*\.git$/) {
1113                                                 next PATH;
1114                                         }
1115                                         # is a fork, don't include it in
1116                                         # the list
1117                                         next PROJECT;
1118                                 }
1119                         }
1120                         if (check_export_ok("$projectroot/$path")) {
1121                                 my $pr = {
1122                                         path => $path,
1123                                         owner => decode_utf8($owner),
1124                                 };
1125                                 push @list, $pr;
1126                                 (my $forks_path = $path) =~ s/\.git$//;
1127                                 $paths{$forks_path}++;
1128                         }
1129                 }
1130                 close $fd;
1131         }
1132         return @list;
1133 }
1134
1135 sub git_get_project_owner {
1136         my $project = shift;
1137         my $owner;
1138
1139         return undef unless $project;
1140
1141         # read from file (url-encoded):
1142         # 'git%2Fgit.git Linus+Torvalds'
1143         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1144         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1145         if (-f $projects_list) {
1146                 open (my $fd , $projects_list);
1147                 while (my $line = <$fd>) {
1148                         chomp $line;
1149                         my ($pr, $ow) = split ' ', $line;
1150                         $pr = unescape($pr);
1151                         $ow = unescape($ow);
1152                         if ($pr eq $project) {
1153                                 $owner = decode_utf8($ow);
1154                                 last;
1155                         }
1156                 }
1157                 close $fd;
1158         }
1159         if (!defined $owner) {
1160                 $owner = get_file_owner("$projectroot/$project");
1161         }
1162
1163         return $owner;
1164 }
1165
1166 sub git_get_last_activity {
1167         my ($path) = @_;
1168         my $fd;
1169
1170         $git_dir = "$projectroot/$path";
1171         open($fd, "-|", git_cmd(), 'for-each-ref',
1172              '--format=%(committer)',
1173              '--sort=-committerdate',
1174              '--count=1',
1175              'refs/heads') or return;
1176         my $most_recent = <$fd>;
1177         close $fd or return;
1178         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1179                 my $timestamp = $1;
1180                 my $age = time - $timestamp;
1181                 return ($age, age_string($age));
1182         }
1183 }
1184
1185 sub git_get_references {
1186         my $type = shift || "";
1187         my %refs;
1188         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1189         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1190         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1191                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1192                 or return;
1193
1194         while (my $line = <$fd>) {
1195                 chomp $line;
1196                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1197                         if (defined $refs{$1}) {
1198                                 push @{$refs{$1}}, $2;
1199                         } else {
1200                                 $refs{$1} = [ $2 ];
1201                         }
1202                 }
1203         }
1204         close $fd or return;
1205         return \%refs;
1206 }
1207
1208 sub git_get_rev_name_tags {
1209         my $hash = shift || return undef;
1210
1211         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1212                 or return;
1213         my $name_rev = <$fd>;
1214         close $fd;
1215
1216         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1217                 return $1;
1218         } else {
1219                 # catches also '$hash undefined' output
1220                 return undef;
1221         }
1222 }
1223
1224 ## ----------------------------------------------------------------------
1225 ## parse to hash functions
1226
1227 sub parse_date {
1228         my $epoch = shift;
1229         my $tz = shift || "-0000";
1230
1231         my %date;
1232         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1233         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1234         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1235         $date{'hour'} = $hour;
1236         $date{'minute'} = $min;
1237         $date{'mday'} = $mday;
1238         $date{'day'} = $days[$wday];
1239         $date{'month'} = $months[$mon];
1240         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1241                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1242         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1243                              $mday, $months[$mon], $hour ,$min;
1244         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1245                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1246
1247         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1248         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1249         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1250         $date{'hour_local'} = $hour;
1251         $date{'minute_local'} = $min;
1252         $date{'tz_local'} = $tz;
1253         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1254                                   1900+$year, $mon+1, $mday,
1255                                   $hour, $min, $sec, $tz);
1256         return %date;
1257 }
1258
1259 sub parse_tag {
1260         my $tag_id = shift;
1261         my %tag;
1262         my @comment;
1263
1264         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1265         $tag{'id'} = $tag_id;
1266         while (my $line = <$fd>) {
1267                 chomp $line;
1268                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1269                         $tag{'object'} = $1;
1270                 } elsif ($line =~ m/^type (.+)$/) {
1271                         $tag{'type'} = $1;
1272                 } elsif ($line =~ m/^tag (.+)$/) {
1273                         $tag{'name'} = $1;
1274                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1275                         $tag{'author'} = $1;
1276                         $tag{'epoch'} = $2;
1277                         $tag{'tz'} = $3;
1278                 } elsif ($line =~ m/--BEGIN/) {
1279                         push @comment, $line;
1280                         last;
1281                 } elsif ($line eq "") {
1282                         last;
1283                 }
1284         }
1285         push @comment, <$fd>;
1286         $tag{'comment'} = \@comment;
1287         close $fd or return;
1288         if (!defined $tag{'name'}) {
1289                 return
1290         };
1291         return %tag
1292 }
1293
1294 sub parse_commit_text {
1295         my ($commit_text, $withparents) = @_;
1296         my @commit_lines = split '\n', $commit_text;
1297         my %co;
1298
1299         pop @commit_lines; # Remove '\0'
1300
1301         my $header = shift @commit_lines;
1302         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1303                 return;
1304         }
1305         ($co{'id'}, my @parents) = split ' ', $header;
1306         while (my $line = shift @commit_lines) {
1307                 last if $line eq "\n";
1308                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1309                         $co{'tree'} = $1;
1310                 } elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
1311                         push @parents, $1;
1312                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1313                         $co{'author'} = $1;
1314                         $co{'author_epoch'} = $2;
1315                         $co{'author_tz'} = $3;
1316                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1317                                 $co{'author_name'}  = $1;
1318                                 $co{'author_email'} = $2;
1319                         } else {
1320                                 $co{'author_name'} = $co{'author'};
1321                         }
1322                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1323                         $co{'committer'} = $1;
1324                         $co{'committer_epoch'} = $2;
1325                         $co{'committer_tz'} = $3;
1326                         $co{'committer_name'} = $co{'committer'};
1327                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1328                                 $co{'committer_name'}  = $1;
1329                                 $co{'committer_email'} = $2;
1330                         } else {
1331                                 $co{'committer_name'} = $co{'committer'};
1332                         }
1333                 }
1334         }
1335         if (!defined $co{'tree'}) {
1336                 return;
1337         };
1338         $co{'parents'} = \@parents;
1339         $co{'parent'} = $parents[0];
1340
1341         foreach my $title (@commit_lines) {
1342                 $title =~ s/^    //;
1343                 if ($title ne "") {
1344                         $co{'title'} = chop_str($title, 80, 5);
1345                         # remove leading stuff of merges to make the interesting part visible
1346                         if (length($title) > 50) {
1347                                 $title =~ s/^Automatic //;
1348                                 $title =~ s/^merge (of|with) /Merge ... /i;
1349                                 if (length($title) > 50) {
1350                                         $title =~ s/(http|rsync):\/\///;
1351                                 }
1352                                 if (length($title) > 50) {
1353                                         $title =~ s/(master|www|rsync)\.//;
1354                                 }
1355                                 if (length($title) > 50) {
1356                                         $title =~ s/kernel.org:?//;
1357                                 }
1358                                 if (length($title) > 50) {
1359                                         $title =~ s/\/pub\/scm//;
1360                                 }
1361                         }
1362                         $co{'title_short'} = chop_str($title, 50, 5);
1363                         last;
1364                 }
1365         }
1366         if ($co{'title'} eq "") {
1367                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1368         }
1369         # remove added spaces
1370         foreach my $line (@commit_lines) {
1371                 $line =~ s/^    //;
1372         }
1373         $co{'comment'} = \@commit_lines;
1374
1375         my $age = time - $co{'committer_epoch'};
1376         $co{'age'} = $age;
1377         $co{'age_string'} = age_string($age);
1378         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1379         if ($age > 60*60*24*7*2) {
1380                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1381                 $co{'age_string_age'} = $co{'age_string'};
1382         } else {
1383                 $co{'age_string_date'} = $co{'age_string'};
1384                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1385         }
1386         return %co;
1387 }
1388
1389 sub parse_commit {
1390         my ($commit_id) = @_;
1391         my %co;
1392
1393         local $/ = "\0";
1394
1395         open my $fd, "-|", git_cmd(), "rev-list",
1396                 "--parents",
1397                 "--header",
1398                 "--max-count=1",
1399                 $commit_id,
1400                 "--",
1401                 or die_error(undef, "Open git-rev-list failed");
1402         %co = parse_commit_text(<$fd>, 1);
1403         close $fd;
1404
1405         return %co;
1406 }
1407
1408 sub parse_commits {
1409         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1410         my @cos;
1411
1412         $maxcount ||= 1;
1413         $skip ||= 0;
1414
1415         local $/ = "\0";
1416
1417         open my $fd, "-|", git_cmd(), "rev-list",
1418                 "--header",
1419                 ($arg ? ($arg) : ()),
1420                 ("--max-count=" . $maxcount),
1421                 ("--skip=" . $skip),
1422                 $commit_id,
1423                 "--",
1424                 ($filename ? ($filename) : ())
1425                 or die_error(undef, "Open git-rev-list failed");
1426         while (my $line = <$fd>) {
1427                 my %co = parse_commit_text($line);
1428                 push @cos, \%co;
1429         }
1430         close $fd;
1431
1432         return wantarray ? @cos : \@cos;
1433 }
1434
1435 # parse ref from ref_file, given by ref_id, with given type
1436 sub parse_ref {
1437         my $ref_file = shift;
1438         my $ref_id = shift;
1439         my $type = shift || git_get_type($ref_id);
1440         my %ref_item;
1441
1442         $ref_item{'type'} = $type;
1443         $ref_item{'id'} = $ref_id;
1444         $ref_item{'epoch'} = 0;
1445         $ref_item{'age'} = "unknown";
1446         if ($type eq "tag") {
1447                 my %tag = parse_tag($ref_id);
1448                 $ref_item{'comment'} = $tag{'comment'};
1449                 if ($tag{'type'} eq "commit") {
1450                         my %co = parse_commit($tag{'object'});
1451                         $ref_item{'epoch'} = $co{'committer_epoch'};
1452                         $ref_item{'age'} = $co{'age_string'};
1453                 } elsif (defined($tag{'epoch'})) {
1454                         my $age = time - $tag{'epoch'};
1455                         $ref_item{'epoch'} = $tag{'epoch'};
1456                         $ref_item{'age'} = age_string($age);
1457                 }
1458                 $ref_item{'reftype'} = $tag{'type'};
1459                 $ref_item{'name'} = $tag{'name'};
1460                 $ref_item{'refid'} = $tag{'object'};
1461         } elsif ($type eq "commit"){
1462                 my %co = parse_commit($ref_id);
1463                 $ref_item{'reftype'} = "commit";
1464                 $ref_item{'name'} = $ref_file;
1465                 $ref_item{'title'} = $co{'title'};
1466                 $ref_item{'refid'} = $ref_id;
1467                 $ref_item{'epoch'} = $co{'committer_epoch'};
1468                 $ref_item{'age'} = $co{'age_string'};
1469         } else {
1470                 $ref_item{'reftype'} = $type;
1471                 $ref_item{'name'} = $ref_file;
1472                 $ref_item{'refid'} = $ref_id;
1473         }
1474
1475         return %ref_item;
1476 }
1477
1478 # parse line of git-diff-tree "raw" output
1479 sub parse_difftree_raw_line {
1480         my $line = shift;
1481         my %res;
1482
1483         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1484         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1485         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1486                 $res{'from_mode'} = $1;
1487                 $res{'to_mode'} = $2;
1488                 $res{'from_id'} = $3;
1489                 $res{'to_id'} = $4;
1490                 $res{'status'} = $5;
1491                 $res{'similarity'} = $6;
1492                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1493                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1494                 } else {
1495                         $res{'file'} = unquote($7);
1496                 }
1497         }
1498         # '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR git-gui/git-gui.sh'
1499         # combined diff (for merge commit)
1500         elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
1501                 $res{'nparents'}  = length($1);
1502                 $res{'from_mode'} = [ split(' ', $2) ];
1503                 $res{'to_mode'} = pop @{$res{'from_mode'}};
1504                 $res{'from_id'} = [ split(' ', $3) ];
1505                 $res{'to_id'} = pop @{$res{'from_id'}};
1506                 $res{'status'} = [ split('', $4) ];
1507                 $res{'to_file'} = unquote($5);
1508         }
1509         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1510         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1511                 $res{'commit'} = $1;
1512         }
1513
1514         return wantarray ? %res : \%res;
1515 }
1516
1517 # parse line of git-ls-tree output
1518 sub parse_ls_tree_line ($;%) {
1519         my $line = shift;
1520         my %opts = @_;
1521         my %res;
1522
1523         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1524         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1525
1526         $res{'mode'} = $1;
1527         $res{'type'} = $2;
1528         $res{'hash'} = $3;
1529         if ($opts{'-z'}) {
1530                 $res{'name'} = $4;
1531         } else {
1532                 $res{'name'} = unquote($4);
1533         }
1534
1535         return wantarray ? %res : \%res;
1536 }
1537
1538 ## ......................................................................
1539 ## parse to array of hashes functions
1540
1541 sub git_get_heads_list {
1542         my $limit = shift;
1543         my @headslist;
1544
1545         open my $fd, '-|', git_cmd(), 'for-each-ref',
1546                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1547                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1548                 'refs/heads'
1549                 or return;
1550         while (my $line = <$fd>) {
1551                 my %ref_item;
1552
1553                 chomp $line;
1554                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1555                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1556                 my ($committer, $epoch, $tz) =
1557                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1558                 $name =~ s!^refs/heads/!!;
1559
1560                 $ref_item{'name'}  = $name;
1561                 $ref_item{'id'}    = $hash;
1562                 $ref_item{'title'} = $title || '(no commit message)';
1563                 $ref_item{'epoch'} = $epoch;
1564                 if ($epoch) {
1565                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1566                 } else {
1567                         $ref_item{'age'} = "unknown";
1568                 }
1569
1570                 push @headslist, \%ref_item;
1571         }
1572         close $fd;
1573
1574         return wantarray ? @headslist : \@headslist;
1575 }
1576
1577 sub git_get_tags_list {
1578         my $limit = shift;
1579         my @tagslist;
1580
1581         open my $fd, '-|', git_cmd(), 'for-each-ref',
1582                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1583                 '--format=%(objectname) %(objecttype) %(refname) '.
1584                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1585                 'refs/tags'
1586                 or return;
1587         while (my $line = <$fd>) {
1588                 my %ref_item;
1589
1590                 chomp $line;
1591                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1592                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1593                 my ($creator, $epoch, $tz) =
1594                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1595                 $name =~ s!^refs/tags/!!;
1596
1597                 $ref_item{'type'} = $type;
1598                 $ref_item{'id'} = $id;
1599                 $ref_item{'name'} = $name;
1600                 if ($type eq "tag") {
1601                         $ref_item{'subject'} = $title;
1602                         $ref_item{'reftype'} = $reftype;
1603                         $ref_item{'refid'}   = $refid;
1604                 } else {
1605                         $ref_item{'reftype'} = $type;
1606                         $ref_item{'refid'}   = $id;
1607                 }
1608
1609                 if ($type eq "tag" || $type eq "commit") {
1610                         $ref_item{'epoch'} = $epoch;
1611                         if ($epoch) {
1612                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1613                         } else {
1614                                 $ref_item{'age'} = "unknown";
1615                         }
1616                 }
1617
1618                 push @tagslist, \%ref_item;
1619         }
1620         close $fd;
1621
1622         return wantarray ? @tagslist : \@tagslist;
1623 }
1624
1625 ## ----------------------------------------------------------------------
1626 ## filesystem-related functions
1627
1628 sub get_file_owner {
1629         my $path = shift;
1630
1631         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1632         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1633         if (!defined $gcos) {
1634                 return undef;
1635         }
1636         my $owner = $gcos;
1637         $owner =~ s/[,;].*$//;
1638         return decode_utf8($owner);
1639 }
1640
1641 ## ......................................................................
1642 ## mimetype related functions
1643
1644 sub mimetype_guess_file {
1645         my $filename = shift;
1646         my $mimemap = shift;
1647         -r $mimemap or return undef;
1648
1649         my %mimemap;
1650         open(MIME, $mimemap) or return undef;
1651         while (<MIME>) {
1652                 next if m/^#/; # skip comments
1653                 my ($mime, $exts) = split(/\t+/);
1654                 if (defined $exts) {
1655                         my @exts = split(/\s+/, $exts);
1656                         foreach my $ext (@exts) {
1657                                 $mimemap{$ext} = $mime;
1658                         }
1659                 }
1660         }
1661         close(MIME);
1662
1663         $filename =~ /\.([^.]*)$/;
1664         return $mimemap{$1};
1665 }
1666
1667 sub mimetype_guess {
1668         my $filename = shift;
1669         my $mime;
1670         $filename =~ /\./ or return undef;
1671
1672         if ($mimetypes_file) {
1673                 my $file = $mimetypes_file;
1674                 if ($file !~ m!^/!) { # if it is relative path
1675                         # it is relative to project
1676                         $file = "$projectroot/$project/$file";
1677                 }
1678                 $mime = mimetype_guess_file($filename, $file);
1679         }
1680         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1681         return $mime;
1682 }
1683
1684 sub blob_mimetype {
1685         my $fd = shift;
1686         my $filename = shift;
1687
1688         if ($filename) {
1689                 my $mime = mimetype_guess($filename);
1690                 $mime and return $mime;
1691         }
1692
1693         # just in case
1694         return $default_blob_plain_mimetype unless $fd;
1695
1696         if (-T $fd) {
1697                 return 'text/plain' .
1698                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1699         } elsif (! $filename) {
1700                 return 'application/octet-stream';
1701         } elsif ($filename =~ m/\.png$/i) {
1702                 return 'image/png';
1703         } elsif ($filename =~ m/\.gif$/i) {
1704                 return 'image/gif';
1705         } elsif ($filename =~ m/\.jpe?g$/i) {
1706                 return 'image/jpeg';
1707         } else {
1708                 return 'application/octet-stream';
1709         }
1710 }
1711
1712 ## ======================================================================
1713 ## functions printing HTML: header, footer, error page
1714
1715 sub git_header_html {
1716         my $status = shift || "200 OK";
1717         my $expires = shift;
1718
1719         my $title = "$site_name";
1720         if (defined $project) {
1721                 $title .= " - " . decode_utf8($project);
1722                 if (defined $action) {
1723                         $title .= "/$action";
1724                         if (defined $file_name) {
1725                                 $title .= " - " . esc_path($file_name);
1726                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1727                                         $title .= "/";
1728                                 }
1729                         }
1730                 }
1731         }
1732         my $content_type;
1733         # require explicit support from the UA if we are to send the page as
1734         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1735         # we have to do this because MSIE sometimes globs '*/*', pretending to
1736         # support xhtml+xml but choking when it gets what it asked for.
1737         if (defined $cgi->http('HTTP_ACCEPT') &&
1738             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1739             $cgi->Accept('application/xhtml+xml') != 0) {
1740                 $content_type = 'application/xhtml+xml';
1741         } else {
1742                 $content_type = 'text/html';
1743         }
1744         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1745                            -status=> $status, -expires => $expires);
1746         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1747         print <<EOF;
1748 <?xml version="1.0" encoding="utf-8"?>
1749 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1750 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1751 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1752 <!-- git core binaries version $git_version -->
1753 <head>
1754 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1755 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1756 <meta name="robots" content="index, nofollow"/>
1757 <title>$title</title>
1758 EOF
1759 # print out each stylesheet that exist
1760         if (defined $stylesheet) {
1761 #provides backwards capability for those people who define style sheet in a config file
1762                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1763         } else {
1764                 foreach my $stylesheet (@stylesheets) {
1765                         next unless $stylesheet;
1766                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1767                 }
1768         }
1769         if (defined $project) {
1770                 printf('<link rel="alternate" title="%s log RSS feed" '.
1771                        'href="%s" type="application/rss+xml" />'."\n",
1772                        esc_param($project), href(action=>"rss"));
1773                 printf('<link rel="alternate" title="%s log Atom feed" '.
1774                        'href="%s" type="application/atom+xml" />'."\n",
1775                        esc_param($project), href(action=>"atom"));
1776         } else {
1777                 printf('<link rel="alternate" title="%s projects list" '.
1778                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1779                        $site_name, href(project=>undef, action=>"project_index"));
1780                 printf('<link rel="alternate" title="%s projects feeds" '.
1781                        'href="%s" type="text/x-opml"/>'."\n",
1782                        $site_name, href(project=>undef, action=>"opml"));
1783         }
1784         if (defined $favicon) {
1785                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1786         }
1787
1788         print "</head>\n" .
1789               "<body>\n";
1790
1791         if (-f $site_header) {
1792                 open (my $fd, $site_header);
1793                 print <$fd>;
1794                 close $fd;
1795         }
1796
1797         print "<div class=\"page_header\">\n" .
1798               $cgi->a({-href => esc_url($logo_url),
1799                        -title => $logo_label},
1800                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1801         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1802         if (defined $project) {
1803                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1804                 if (defined $action) {
1805                         print " / $action";
1806                 }
1807                 print "\n";
1808         }
1809         my ($have_search) = gitweb_check_feature('search');
1810         if ((defined $project) && ($have_search)) {
1811                 if (!defined $searchtext) {
1812                         $searchtext = "";
1813                 }
1814                 my $search_hash;
1815                 if (defined $hash_base) {
1816                         $search_hash = $hash_base;
1817                 } elsif (defined $hash) {
1818                         $search_hash = $hash;
1819                 } else {
1820                         $search_hash = "HEAD";
1821                 }
1822                 $cgi->param("a", "search");
1823                 $cgi->param("h", $search_hash);
1824                 $cgi->param("p", $project);
1825                 print $cgi->startform(-method => "get", -action => $my_uri) .
1826                       "<div class=\"search\">\n" .
1827                       $cgi->hidden(-name => "p") . "\n" .
1828                       $cgi->hidden(-name => "a") . "\n" .
1829                       $cgi->hidden(-name => "h") . "\n" .
1830                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1831                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1832                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1833                       " search:\n",
1834                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1835                       "</div>" .
1836                       $cgi->end_form() . "\n";
1837         }
1838         print "</div>\n";
1839 }
1840
1841 sub git_footer_html {
1842         print "<div class=\"page_footer\">\n";
1843         if (defined $project) {
1844                 my $descr = git_get_project_description($project);
1845                 if (defined $descr) {
1846                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1847                 }
1848                 print $cgi->a({-href => href(action=>"rss"),
1849                               -class => "rss_logo"}, "RSS") . " ";
1850                 print $cgi->a({-href => href(action=>"atom"),
1851                               -class => "rss_logo"}, "Atom") . "\n";
1852         } else {
1853                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1854                               -class => "rss_logo"}, "OPML") . " ";
1855                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1856                               -class => "rss_logo"}, "TXT") . "\n";
1857         }
1858         print "</div>\n" ;
1859
1860         if (-f $site_footer) {
1861                 open (my $fd, $site_footer);
1862                 print <$fd>;
1863                 close $fd;
1864         }
1865
1866         print "</body>\n" .
1867               "</html>";
1868 }
1869
1870 sub die_error {
1871         my $status = shift || "403 Forbidden";
1872         my $error = shift || "Malformed query, file missing or permission denied";
1873
1874         git_header_html($status);
1875         print <<EOF;
1876 <div class="page_body">
1877 <br /><br />
1878 $status - $error
1879 <br />
1880 </div>
1881 EOF
1882         git_footer_html();
1883         exit;
1884 }
1885
1886 ## ----------------------------------------------------------------------
1887 ## functions printing or outputting HTML: navigation
1888
1889 sub git_print_page_nav {
1890         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1891         $extra = '' if !defined $extra; # pager or formats
1892
1893         my @navs = qw(summary shortlog log commit commitdiff tree);
1894         if ($suppress) {
1895                 @navs = grep { $_ ne $suppress } @navs;
1896         }
1897
1898         my %arg = map { $_ => {action=>$_} } @navs;
1899         if (defined $head) {
1900                 for (qw(commit commitdiff)) {
1901                         $arg{$_}{'hash'} = $head;
1902                 }
1903                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1904                         for (qw(shortlog log)) {
1905                                 $arg{$_}{'hash'} = $head;
1906                         }
1907                 }
1908         }
1909         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1910         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1911
1912         print "<div class=\"page_nav\">\n" .
1913                 (join " | ",
1914                  map { $_ eq $current ?
1915                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1916                  } @navs);
1917         print "<br/>\n$extra<br/>\n" .
1918               "</div>\n";
1919 }
1920
1921 sub format_paging_nav {
1922         my ($action, $hash, $head, $page, $nrevs) = @_;
1923         my $paging_nav;
1924
1925
1926         if ($hash ne $head || $page) {
1927                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1928         } else {
1929                 $paging_nav .= "HEAD";
1930         }
1931
1932         if ($page > 0) {
1933                 $paging_nav .= " &sdot; " .
1934                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1935                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1936         } else {
1937                 $paging_nav .= " &sdot; prev";
1938         }
1939
1940         if ($nrevs >= (100 * ($page+1)-1)) {
1941                 $paging_nav .= " &sdot; " .
1942                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1943                                  -accesskey => "n", -title => "Alt-n"}, "next");
1944         } else {
1945                 $paging_nav .= " &sdot; next";
1946         }
1947
1948         return $paging_nav;
1949 }
1950
1951 ## ......................................................................
1952 ## functions printing or outputting HTML: div
1953
1954 sub git_print_header_div {
1955         my ($action, $title, $hash, $hash_base) = @_;
1956         my %args = ();
1957
1958         $args{'action'} = $action;
1959         $args{'hash'} = $hash if $hash;
1960         $args{'hash_base'} = $hash_base if $hash_base;
1961
1962         print "<div class=\"header\">\n" .
1963               $cgi->a({-href => href(%args), -class => "title"},
1964               $title ? $title : $action) .
1965               "\n</div>\n";
1966 }
1967
1968 #sub git_print_authorship (\%) {
1969 sub git_print_authorship {
1970         my $co = shift;
1971
1972         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1973         print "<div class=\"author_date\">" .
1974               esc_html($co->{'author_name'}) .
1975               " [$ad{'rfc2822'}";
1976         if ($ad{'hour_local'} < 6) {
1977                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1978                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1979         } else {
1980                 printf(" (%02d:%02d %s)",
1981                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1982         }
1983         print "]</div>\n";
1984 }
1985
1986 sub git_print_page_path {
1987         my $name = shift;
1988         my $type = shift;
1989         my $hb = shift;
1990
1991
1992         print "<div class=\"page_path\">";
1993         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1994                       -title => 'tree root'}, decode_utf8("[$project]"));
1995         print " / ";
1996         if (defined $name) {
1997                 my @dirname = split '/', $name;
1998                 my $basename = pop @dirname;
1999                 my $fullname = '';
2000
2001                 foreach my $dir (@dirname) {
2002                         $fullname .= ($fullname ? '/' : '') . $dir;
2003                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
2004                                                      hash_base=>$hb),
2005                                       -title => $fullname}, esc_path($dir));
2006                         print " / ";
2007                 }
2008                 if (defined $type && $type eq 'blob') {
2009                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
2010                                                      hash_base=>$hb),
2011                                       -title => $name}, esc_path($basename));
2012                 } elsif (defined $type && $type eq 'tree') {
2013                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2014                                                      hash_base=>$hb),
2015                                       -title => $name}, esc_path($basename));
2016                         print " / ";
2017                 } else {
2018                         print esc_path($basename);
2019                 }
2020         }
2021         print "<br/></div>\n";
2022 }
2023
2024 # sub git_print_log (\@;%) {
2025 sub git_print_log ($;%) {
2026         my $log = shift;
2027         my %opts = @_;
2028
2029         if ($opts{'-remove_title'}) {
2030                 # remove title, i.e. first line of log
2031                 shift @$log;
2032         }
2033         # remove leading empty lines
2034         while (defined $log->[0] && $log->[0] eq "") {
2035                 shift @$log;
2036         }
2037
2038         # print log
2039         my $signoff = 0;
2040         my $empty = 0;
2041         foreach my $line (@$log) {
2042                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2043                         $signoff = 1;
2044                         $empty = 0;
2045                         if (! $opts{'-remove_signoff'}) {
2046                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2047                                 next;
2048                         } else {
2049                                 # remove signoff lines
2050                                 next;
2051                         }
2052                 } else {
2053                         $signoff = 0;
2054                 }
2055
2056                 # print only one empty line
2057                 # do not print empty line after signoff
2058                 if ($line eq "") {
2059                         next if ($empty || $signoff);
2060                         $empty = 1;
2061                 } else {
2062                         $empty = 0;
2063                 }
2064
2065                 print format_log_line_html($line) . "<br/>\n";
2066         }
2067
2068         if ($opts{'-final_empty_line'}) {
2069                 # end with single empty line
2070                 print "<br/>\n" unless $empty;
2071         }
2072 }
2073
2074 # return link target (what link points to)
2075 sub git_get_link_target {
2076         my $hash = shift;
2077         my $link_target;
2078
2079         # read link
2080         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2081                 or return;
2082         {
2083                 local $/;
2084                 $link_target = <$fd>;
2085         }
2086         close $fd
2087                 or return;
2088
2089         return $link_target;
2090 }
2091
2092 # given link target, and the directory (basedir) the link is in,
2093 # return target of link relative to top directory (top tree);
2094 # return undef if it is not possible (including absolute links).
2095 sub normalize_link_target {
2096         my ($link_target, $basedir, $hash_base) = @_;
2097
2098         # we can normalize symlink target only if $hash_base is provided
2099         return unless $hash_base;
2100
2101         # absolute symlinks (beginning with '/') cannot be normalized
2102         return if (substr($link_target, 0, 1) eq '/');
2103
2104         # normalize link target to path from top (root) tree (dir)
2105         my $path;
2106         if ($basedir) {
2107                 $path = $basedir . '/' . $link_target;
2108         } else {
2109                 # we are in top (root) tree (dir)
2110                 $path = $link_target;
2111         }
2112
2113         # remove //, /./, and /../
2114         my @path_parts;
2115         foreach my $part (split('/', $path)) {
2116                 # discard '.' and ''
2117                 next if (!$part || $part eq '.');
2118                 # handle '..'
2119                 if ($part eq '..') {
2120                         if (@path_parts) {
2121                                 pop @path_parts;
2122                         } else {
2123                                 # link leads outside repository (outside top dir)
2124                                 return;
2125                         }
2126                 } else {
2127                         push @path_parts, $part;
2128                 }
2129         }
2130         $path = join('/', @path_parts);
2131
2132         return $path;
2133 }
2134
2135 # print tree entry (row of git_tree), but without encompassing <tr> element
2136 sub git_print_tree_entry {
2137         my ($t, $basedir, $hash_base, $have_blame) = @_;
2138
2139         my %base_key = ();
2140         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2141
2142         # The format of a table row is: mode list link.  Where mode is
2143         # the mode of the entry, list is the name of the entry, an href,
2144         # and link is the action links of the entry.
2145
2146         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2147         if ($t->{'type'} eq "blob") {
2148                 print "<td class=\"list\">" .
2149                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2150                                                file_name=>"$basedir$t->{'name'}", %base_key),
2151                                 -class => "list"}, esc_path($t->{'name'}));
2152                 if (S_ISLNK(oct $t->{'mode'})) {
2153                         my $link_target = git_get_link_target($t->{'hash'});
2154                         if ($link_target) {
2155                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2156                                 if (defined $norm_target) {
2157                                         print " -> " .
2158                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2159                                                                      file_name=>$norm_target),
2160                                                        -title => $norm_target}, esc_path($link_target));
2161                                 } else {
2162                                         print " -> " . esc_path($link_target);
2163                                 }
2164                         }
2165                 }
2166                 print "</td>\n";
2167                 print "<td class=\"link\">";
2168                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2169                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2170                               "blob");
2171                 if ($have_blame) {
2172                         print " | " .
2173                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2174                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2175                                       "blame");
2176                 }
2177                 if (defined $hash_base) {
2178                         print " | " .
2179                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2180                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2181                                       "history");
2182                 }
2183                 print " | " .
2184                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2185                                                file_name=>"$basedir$t->{'name'}")},
2186                                 "raw");
2187                 print "</td>\n";
2188
2189         } elsif ($t->{'type'} eq "tree") {
2190                 print "<td class=\"list\">";
2191                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2192                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2193                               esc_path($t->{'name'}));
2194                 print "</td>\n";
2195                 print "<td class=\"link\">";
2196                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2197                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2198                               "tree");
2199                 if (defined $hash_base) {
2200                         print " | " .
2201                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2202                                                      file_name=>"$basedir$t->{'name'}")},
2203                                       "history");
2204                 }
2205                 print "</td>\n";
2206         }
2207 }
2208
2209 ## ......................................................................
2210 ## functions printing large fragments of HTML
2211
2212 sub git_difftree_body {
2213         my ($difftree, $hash, $parent) = @_;
2214         my ($have_blame) = gitweb_check_feature('blame');
2215         print "<div class=\"list_head\">\n";
2216         if ($#{$difftree} > 10) {
2217                 print(($#{$difftree} + 1) . " files changed:\n");
2218         }
2219         print "</div>\n";
2220
2221         print "<table class=\"diff_tree\">\n";
2222         my $alternate = 1;
2223         my $patchno = 0;
2224         foreach my $line (@{$difftree}) {
2225                 my %diff = parse_difftree_raw_line($line);
2226
2227                 if ($alternate) {
2228                         print "<tr class=\"dark\">\n";
2229                 } else {
2230                         print "<tr class=\"light\">\n";
2231                 }
2232                 $alternate ^= 1;
2233
2234                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2235                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2236                 if ($diff{'to_mode'} ne ('0' x 6)) {
2237                         $to_mode_oct = oct $diff{'to_mode'};
2238                         if (S_ISREG($to_mode_oct)) { # only for regular file
2239                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2240                         }
2241                         $to_file_type = file_type($diff{'to_mode'});
2242                 }
2243                 if ($diff{'from_mode'} ne ('0' x 6)) {
2244                         $from_mode_oct = oct $diff{'from_mode'};
2245                         if (S_ISREG($to_mode_oct)) { # only for regular file
2246                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2247                         }
2248                         $from_file_type = file_type($diff{'from_mode'});
2249                 }
2250
2251                 if ($diff{'status'} eq "A") { # created
2252                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2253                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2254                         $mode_chng   .= "]</span>";
2255                         print "<td>";
2256                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2257                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2258                                       -class => "list"}, esc_path($diff{'file'}));
2259                         print "</td>\n";
2260                         print "<td>$mode_chng</td>\n";
2261                         print "<td class=\"link\">";
2262                         if ($action eq 'commitdiff') {
2263                                 # link to patch
2264                                 $patchno++;
2265                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2266                                 print " | ";
2267                         }
2268                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2269                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2270                                       "blob");
2271                         print "</td>\n";
2272
2273                 } elsif ($diff{'status'} eq "D") { # deleted
2274                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2275                         print "<td>";
2276                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2277                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2278                                        -class => "list"}, esc_path($diff{'file'}));
2279                         print "</td>\n";
2280                         print "<td>$mode_chng</td>\n";
2281                         print "<td class=\"link\">";
2282                         if ($action eq 'commitdiff') {
2283                                 # link to patch
2284                                 $patchno++;
2285                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2286                                 print " | ";
2287                         }
2288                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2289                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2290                                       "blob") . " | ";
2291                         if ($have_blame) {
2292                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2293                                                              file_name=>$diff{'file'})},
2294                                               "blame") . " | ";
2295                         }
2296                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2297                                                      file_name=>$diff{'file'})},
2298                                       "history");
2299                         print "</td>\n";
2300
2301                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2302                         my $mode_chnge = "";
2303                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2304                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2305                                 if ($from_file_type ne $to_file_type) {
2306                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2307                                 }
2308                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2309                                         if ($from_mode_str && $to_mode_str) {
2310                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2311                                         } elsif ($to_mode_str) {
2312                                                 $mode_chnge .= " mode: $to_mode_str";
2313                                         }
2314                                 }
2315                                 $mode_chnge .= "]</span>\n";
2316                         }
2317                         print "<td>";
2318                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2319                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2320                                       -class => "list"}, esc_path($diff{'file'}));
2321                         print "</td>\n";
2322                         print "<td>$mode_chnge</td>\n";
2323                         print "<td class=\"link\">";
2324                         if ($action eq 'commitdiff') {
2325                                 # link to patch
2326                                 $patchno++;
2327                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2328                                       " | ";
2329                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2330                                 # "commit" view and modified file (not onlu mode changed)
2331                                 print $cgi->a({-href => href(action=>"blobdiff",
2332                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2333                                                              hash_base=>$hash, hash_parent_base=>$parent,
2334                                                              file_name=>$diff{'file'})},
2335                                               "diff") .
2336                                       " | ";
2337                         }
2338                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2339                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2340                                        "blob") . " | ";
2341                         if ($have_blame) {
2342                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2343                                                              file_name=>$diff{'file'})},
2344                                               "blame") . " | ";
2345                         }
2346                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2347                                                      file_name=>$diff{'file'})},
2348                                       "history");
2349                         print "</td>\n";
2350
2351                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2352                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2353                         my $nstatus = $status_name{$diff{'status'}};
2354                         my $mode_chng = "";
2355                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2356                                 # mode also for directories, so we cannot use $to_mode_str
2357                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2358                         }
2359                         print "<td>" .
2360                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2361                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2362                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2363                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2364                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2365                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2366                                       -class => "list"}, esc_path($diff{'from_file'})) .
2367                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2368                               "<td class=\"link\">";
2369                         if ($action eq 'commitdiff') {
2370                                 # link to patch
2371                                 $patchno++;
2372                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2373                                       " | ";
2374                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2375                                 # "commit" view and modified file (not only pure rename or copy)
2376                                 print $cgi->a({-href => href(action=>"blobdiff",
2377                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2378                                                              hash_base=>$hash, hash_parent_base=>$parent,
2379                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2380                                               "diff") .
2381                                       " | ";
2382                         }
2383                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2384                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2385                                       "blob") . " | ";
2386                         if ($have_blame) {
2387                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2388                                                              file_name=>$diff{'to_file'})},
2389                                               "blame") . " | ";
2390                         }
2391                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2392                                                     file_name=>$diff{'to_file'})},
2393                                       "history");
2394                         print "</td>\n";
2395
2396                 } # we should not encounter Unmerged (U) or Unknown (X) status
2397                 print "</tr>\n";
2398         }
2399         print "</table>\n";
2400 }
2401
2402 sub git_patchset_body {
2403         my ($fd, $difftree, $hash, $hash_parent) = @_;
2404
2405         my $patch_idx = 0;
2406         my $patch_number = 0;
2407         my $patch_line;
2408         my $diffinfo;
2409         my (%from, %to);
2410
2411         print "<div class=\"patchset\">\n";
2412
2413         # skip to first patch
2414         while ($patch_line = <$fd>) {
2415                 chomp $patch_line;
2416
2417                 last if ($patch_line =~ m/^diff /);
2418         }
2419
2420  PATCH:
2421         while ($patch_line) {
2422                 my @diff_header;
2423                 my ($from_id, $to_id);
2424
2425                 # git diff header
2426                 #assert($patch_line =~ m/^diff /) if DEBUG;
2427                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2428                 $patch_number++;
2429                 push @diff_header, $patch_line;
2430
2431                 # extended diff header
2432         EXTENDED_HEADER:
2433                 while ($patch_line = <$fd>) {
2434                         chomp $patch_line;
2435
2436                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2437
2438                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2439                                 $from_id = $1;
2440                                 $to_id   = $2;
2441                         }
2442
2443                         push @diff_header, $patch_line;
2444                 }
2445                 my $last_patch_line = $patch_line;
2446
2447                 # check if current patch belong to current raw line
2448                 # and parse raw git-diff line if needed
2449                 if (defined $diffinfo &&
2450                     $diffinfo->{'from_id'} eq $from_id &&
2451                     $diffinfo->{'to_id'}   eq $to_id) {
2452                         # this is split patch
2453                         print "<div class=\"patch cont\">\n";
2454                 } else {
2455                         # advance raw git-diff output if needed
2456                         $patch_idx++ if defined $diffinfo;
2457
2458                         # read and prepare patch information
2459                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2460                                 # pre-parsed (or generated by hand)
2461                                 $diffinfo = $difftree->[$patch_idx];
2462                         } else {
2463                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2464                         }
2465                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2466                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2467                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2468                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2469                                                      hash=>$diffinfo->{'from_id'},
2470                                                      file_name=>$from{'file'});
2471                         } else {
2472                                 delete $from{'href'};
2473                         }
2474                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2475                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2476                                                    hash=>$diffinfo->{'to_id'},
2477                                                    file_name=>$to{'file'});
2478                         } else {
2479                                 delete $to{'href'};
2480                         }
2481                         # this is first patch for raw difftree line with $patch_idx index
2482                         # we index @$difftree array from 0, but number patches from 1
2483                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2484                 }
2485
2486                 # print "git diff" header
2487                 $patch_line = shift @diff_header;
2488                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2489                 if ($from{'href'}) {
2490                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2491                                                'a/' . esc_path($from{'file'}));
2492                 } else { # file was added
2493                         $patch_line .= 'a/' . esc_path($from{'file'});
2494                 }
2495                 $patch_line .= ' ';
2496                 if ($to{'href'}) {
2497                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2498                                                'b/' . esc_path($to{'file'}));
2499                 } else { # file was deleted
2500                         $patch_line .= 'b/' . esc_path($to{'file'});
2501                 }
2502                 print "<div class=\"diff header\">$patch_line</div>\n";
2503
2504                 # print extended diff header
2505                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2506         EXTENDED_HEADER:
2507                 foreach $patch_line (@diff_header) {
2508                         # match <path>
2509                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2510                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2511                                                        esc_path($from{'file'}));
2512                         }
2513                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2514                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2515                                                        esc_path($to{'file'}));
2516                         }
2517                         # match <mode>
2518                         if ($patch_line =~ m/\s(\d{6})$/) {
2519                                 $patch_line .= '<span class="info"> (' .
2520                                                file_type_long($1) .
2521                                                ')</span>';
2522                         }
2523                         # match <hash>
2524                         if ($patch_line =~ m/^index/) {
2525                                 my ($from_link, $to_link);
2526                                 if ($from{'href'}) {
2527                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2528                                                              substr($diffinfo->{'from_id'},0,7));
2529                                 } else {
2530                                         $from_link = '0' x 7;
2531                                 }
2532                                 if ($to{'href'}) {
2533                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2534                                                            substr($diffinfo->{'to_id'},0,7));
2535                                 } else {
2536                                         $to_link = '0' x 7;
2537                                 }
2538                                 #affirm {
2539                                 #       my ($from_hash, $to_hash) =
2540                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2541                                 #       my ($from_id, $to_id) =
2542                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2543                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2544                                 #} if DEBUG;
2545                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2546                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2547                         }
2548                         print $patch_line . "<br/>\n";
2549                 }
2550                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2551
2552                 # from-file/to-file diff header
2553                 $patch_line = $last_patch_line;
2554                 if (! $patch_line) {
2555                         print "</div>\n"; # class="patch"
2556                         last PATCH;
2557                 }
2558                 next PATCH if ($patch_line =~ m/^diff /);
2559                 #assert($patch_line =~ m/^---/) if DEBUG;
2560                 if ($from{'href'} && $patch_line =~ m!^--- "?a/!) {
2561                         $patch_line = '--- a/' .
2562                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2563                                               esc_path($from{'file'}));
2564                 }
2565                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2566
2567                 $patch_line = <$fd>;
2568                 chomp $patch_line;
2569
2570                 #assert($patch_line =~ m/^+++/) if DEBUG;
2571                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2572                         $patch_line = '+++ b/' .
2573                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2574                                               esc_path($to{'file'}));
2575                 }
2576                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2577
2578                 # the patch itself
2579         LINE:
2580                 while ($patch_line = <$fd>) {
2581                         chomp $patch_line;
2582
2583                         next PATCH if ($patch_line =~ m/^diff /);
2584
2585                         print format_diff_line($patch_line, \%from, \%to);
2586                 }
2587
2588         } continue {
2589                 print "</div>\n"; # class="patch"
2590         }
2591         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2592
2593         print "</div>\n"; # class="patchset"
2594 }
2595
2596 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2597
2598 sub git_project_list_body {
2599         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2600
2601         my ($check_forks) = gitweb_check_feature('forks');
2602
2603         my @projects;
2604         foreach my $pr (@$projlist) {
2605                 my (@aa) = git_get_last_activity($pr->{'path'});
2606                 unless (@aa) {
2607                         next;
2608                 }
2609                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2610                 if (!defined $pr->{'descr'}) {
2611                         my $descr = git_get_project_description($pr->{'path'}) || "";
2612                         $pr->{'descr_long'} = decode_utf8($descr);
2613                         $pr->{'descr'} = chop_str($descr, 25, 5);
2614                 }
2615                 if (!defined $pr->{'owner'}) {
2616                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2617                 }
2618                 if ($check_forks) {
2619                         my $pname = $pr->{'path'};
2620                         if (($pname =~ s/\.git$//) &&
2621                             ($pname !~ /\/$/) &&
2622                             (-d "$projectroot/$pname")) {
2623                                 $pr->{'forks'} = "-d $projectroot/$pname";
2624                         }
2625                         else {
2626                                 $pr->{'forks'} = 0;
2627                         }
2628                 }
2629                 push @projects, $pr;
2630         }
2631
2632         $order ||= $default_projects_order;
2633         $from = 0 unless defined $from;
2634         $to = $#projects if (!defined $to || $#projects < $to);
2635
2636         print "<table class=\"project_list\">\n";
2637         unless ($no_header) {
2638                 print "<tr>\n";
2639                 if ($check_forks) {
2640                         print "<th></th>\n";
2641                 }
2642                 if ($order eq "project") {
2643                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2644                         print "<th>Project</th>\n";
2645                 } else {
2646                         print "<th>" .
2647                               $cgi->a({-href => href(project=>undef, order=>'project'),
2648                                        -class => "header"}, "Project") .
2649                               "</th>\n";
2650                 }
2651                 if ($order eq "descr") {
2652                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2653                         print "<th>Description</th>\n";
2654                 } else {
2655                         print "<th>" .
2656                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2657                                        -class => "header"}, "Description") .
2658                               "</th>\n";
2659                 }
2660                 if ($order eq "owner") {
2661                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2662                         print "<th>Owner</th>\n";
2663                 } else {
2664                         print "<th>" .
2665                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2666                                        -class => "header"}, "Owner") .
2667                               "</th>\n";
2668                 }
2669                 if ($order eq "age") {
2670                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2671                         print "<th>Last Change</th>\n";
2672                 } else {
2673                         print "<th>" .
2674                               $cgi->a({-href => href(project=>undef, order=>'age'),
2675                                        -class => "header"}, "Last Change") .
2676                               "</th>\n";
2677                 }
2678                 print "<th></th>\n" .
2679                       "</tr>\n";
2680         }
2681         my $alternate = 1;
2682         for (my $i = $from; $i <= $to; $i++) {
2683                 my $pr = $projects[$i];
2684                 if ($alternate) {
2685                         print "<tr class=\"dark\">\n";
2686                 } else {
2687                         print "<tr class=\"light\">\n";
2688                 }
2689                 $alternate ^= 1;
2690                 if ($check_forks) {
2691                         print "<td>";
2692                         if ($pr->{'forks'}) {
2693                                 print "<!-- $pr->{'forks'} -->\n";
2694                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2695                         }
2696                         print "</td>\n";
2697                 }
2698                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2699                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2700                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2701                                         -class => "list", -title => $pr->{'descr_long'}},
2702                                         esc_html($pr->{'descr'})) . "</td>\n" .
2703                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2704                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2705                       $pr->{'age_string'} . "</td>\n" .
2706                       "<td class=\"link\">" .
2707                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2708                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2709                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2710                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2711                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2712                       "</td>\n" .
2713                       "</tr>\n";
2714         }
2715         if (defined $extra) {
2716                 print "<tr>\n";
2717                 if ($check_forks) {
2718                         print "<td></td>\n";
2719                 }
2720                 print "<td colspan=\"5\">$extra</td>\n" .
2721                       "</tr>\n";
2722         }
2723         print "</table>\n";
2724 }
2725
2726 sub git_shortlog_body {
2727         # uses global variable $project
2728         my ($commitlist, $from, $to, $refs, $extra) = @_;
2729
2730         my $have_snapshot = gitweb_have_snapshot();
2731
2732         $from = 0 unless defined $from;
2733         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2734
2735         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2736         my $alternate = 1;
2737         for (my $i = $from; $i <= $to; $i++) {
2738                 my %co = %{$commitlist->[$i]};
2739                 my $commit = $co{'id'};
2740                 my $ref = format_ref_marker($refs, $commit);
2741                 if ($alternate) {
2742                         print "<tr class=\"dark\">\n";
2743                 } else {
2744                         print "<tr class=\"light\">\n";
2745                 }
2746                 $alternate ^= 1;
2747                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2748                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2749                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2750                       "<td>";
2751                 print format_subject_html($co{'title'}, $co{'title_short'},
2752                                           href(action=>"commit", hash=>$commit), $ref);
2753                 print "</td>\n" .
2754                       "<td class=\"link\">" .
2755                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2756                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2757                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2758                 if ($have_snapshot) {
2759                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2760                 }
2761                 print "</td>\n" .
2762                       "</tr>\n";
2763         }
2764         if (defined $extra) {
2765                 print "<tr>\n" .
2766                       "<td colspan=\"4\">$extra</td>\n" .
2767                       "</tr>\n";
2768         }
2769         print "</table>\n";
2770 }
2771
2772 sub git_history_body {
2773         # Warning: assumes constant type (blob or tree) during history
2774         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2775
2776         $from = 0 unless defined $from;
2777         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2778
2779         print "<table class=\"history\" cellspacing=\"0\">\n";
2780         my $alternate = 1;
2781         for (my $i = $from; $i <= $to; $i++) {
2782                 my %co = %{$commitlist->[$i]};
2783                 if (!%co) {
2784                         next;
2785                 }
2786                 my $commit = $co{'id'};
2787
2788                 my $ref = format_ref_marker($refs, $commit);
2789
2790                 if ($alternate) {
2791                         print "<tr class=\"dark\">\n";
2792                 } else {
2793                         print "<tr class=\"light\">\n";
2794                 }
2795                 $alternate ^= 1;
2796                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2797                       # shortlog uses      chop_str($co{'author_name'}, 10)
2798                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2799                       "<td>";
2800                 # originally git_history used chop_str($co{'title'}, 50)
2801                 print format_subject_html($co{'title'}, $co{'title_short'},
2802                                           href(action=>"commit", hash=>$commit), $ref);
2803                 print "</td>\n" .
2804                       "<td class=\"link\">" .
2805                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2806                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2807
2808                 if ($ftype eq 'blob') {
2809                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2810                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2811                         if (defined $blob_current && defined $blob_parent &&
2812                                         $blob_current ne $blob_parent) {
2813                                 print " | " .
2814                                         $cgi->a({-href => href(action=>"blobdiff",
2815                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2816                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2817                                                                file_name=>$file_name)},
2818                                                 "diff to current");
2819                         }
2820                 }
2821                 print "</td>\n" .
2822                       "</tr>\n";
2823         }
2824         if (defined $extra) {
2825                 print "<tr>\n" .
2826                       "<td colspan=\"4\">$extra</td>\n" .
2827                       "</tr>\n";
2828         }
2829         print "</table>\n";
2830 }
2831
2832 sub git_tags_body {
2833         # uses global variable $project
2834         my ($taglist, $from, $to, $extra) = @_;
2835         $from = 0 unless defined $from;
2836         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2837
2838         print "<table class=\"tags\" cellspacing=\"0\">\n";
2839         my $alternate = 1;
2840         for (my $i = $from; $i <= $to; $i++) {
2841                 my $entry = $taglist->[$i];
2842                 my %tag = %$entry;
2843                 my $comment = $tag{'subject'};
2844                 my $comment_short;
2845                 if (defined $comment) {
2846                         $comment_short = chop_str($comment, 30, 5);
2847                 }
2848                 if ($alternate) {
2849                         print "<tr class=\"dark\">\n";
2850                 } else {
2851                         print "<tr class=\"light\">\n";
2852                 }
2853                 $alternate ^= 1;
2854                 if (defined $tag{'age'}) {
2855                         print "<td><i>$tag{'age'}</i></td>\n";
2856                 } else {
2857                         print "<td></td>\n";
2858                 }
2859                 print "<td>" .
2860                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2861                                -class => "list name"}, esc_html($tag{'name'})) .
2862                       "</td>\n" .
2863                       "<td>";
2864                 if (defined $comment) {
2865                         print format_subject_html($comment, $comment_short,
2866                                                   href(action=>"tag", hash=>$tag{'id'}));
2867                 }
2868                 print "</td>\n" .
2869                       "<td class=\"selflink\">";
2870                 if ($tag{'type'} eq "tag") {
2871                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2872                 } else {
2873                         print "&nbsp;";
2874                 }
2875                 print "</td>\n" .
2876                       "<td class=\"link\">" . " | " .
2877                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2878                 if ($tag{'reftype'} eq "commit") {
2879                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2880                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2881                 } elsif ($tag{'reftype'} eq "blob") {
2882                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2883                 }
2884                 print "</td>\n" .
2885                       "</tr>";
2886         }
2887         if (defined $extra) {
2888                 print "<tr>\n" .
2889                       "<td colspan=\"5\">$extra</td>\n" .
2890                       "</tr>\n";
2891         }
2892         print "</table>\n";
2893 }
2894
2895 sub git_heads_body {
2896         # uses global variable $project
2897         my ($headlist, $head, $from, $to, $extra) = @_;
2898         $from = 0 unless defined $from;
2899         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2900
2901         print "<table class=\"heads\" cellspacing=\"0\">\n";
2902         my $alternate = 1;
2903         for (my $i = $from; $i <= $to; $i++) {
2904                 my $entry = $headlist->[$i];
2905                 my %ref = %$entry;
2906                 my $curr = $ref{'id'} eq $head;
2907                 if ($alternate) {
2908                         print "<tr class=\"dark\">\n";
2909                 } else {
2910                         print "<tr class=\"light\">\n";
2911                 }
2912                 $alternate ^= 1;
2913                 print "<td><i>$ref{'age'}</i></td>\n" .
2914                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2915                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2916                                -class => "list name"},esc_html($ref{'name'})) .
2917                       "</td>\n" .
2918                       "<td class=\"link\">" .
2919                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2920                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2921                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2922                       "</td>\n" .
2923                       "</tr>";
2924         }
2925         if (defined $extra) {
2926                 print "<tr>\n" .
2927                       "<td colspan=\"3\">$extra</td>\n" .
2928                       "</tr>\n";
2929         }
2930         print "</table>\n";
2931 }
2932
2933 sub git_search_grep_body {
2934         my ($commitlist, $from, $to, $extra) = @_;
2935         $from = 0 unless defined $from;
2936         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2937
2938         print "<table class=\"grep\" cellspacing=\"0\">\n";
2939         my $alternate = 1;
2940         for (my $i = $from; $i <= $to; $i++) {
2941                 my %co = %{$commitlist->[$i]};
2942                 if (!%co) {
2943                         next;
2944                 }
2945                 my $commit = $co{'id'};
2946                 if ($alternate) {
2947                         print "<tr class=\"dark\">\n";
2948                 } else {
2949                         print "<tr class=\"light\">\n";
2950                 }
2951                 $alternate ^= 1;
2952                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2953                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2954                       "<td>" .
2955                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2956                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2957                 my $comment = $co{'comment'};
2958                 foreach my $line (@$comment) {
2959                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2960                                 my $lead = esc_html($1) || "";
2961                                 $lead = chop_str($lead, 30, 10);
2962                                 my $match = esc_html($2) || "";
2963                                 my $trail = esc_html($3) || "";
2964                                 $trail = chop_str($trail, 30, 10);
2965                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2966                                 print chop_str($text, 80, 5) . "<br/>\n";
2967                         }
2968                 }
2969                 print "</td>\n" .
2970                       "<td class=\"link\">" .
2971                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2972                       " | " .
2973                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2974                 print "</td>\n" .
2975                       "</tr>\n";
2976         }
2977         if (defined $extra) {
2978                 print "<tr>\n" .
2979                       "<td colspan=\"3\">$extra</td>\n" .
2980                       "</tr>\n";
2981         }
2982         print "</table>\n";
2983 }
2984
2985 ## ======================================================================
2986 ## ======================================================================
2987 ## actions
2988
2989 sub git_project_list {
2990         my $order = $cgi->param('o');
2991         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
2992                 die_error(undef, "Unknown order parameter");
2993         }
2994
2995         my @list = git_get_projects_list();
2996         if (!@list) {
2997                 die_error(undef, "No projects found");
2998         }
2999
3000         git_header_html();
3001         if (-f $home_text) {
3002                 print "<div class=\"index_include\">\n";
3003                 open (my $fd, $home_text);
3004                 print <$fd>;
3005                 close $fd;
3006                 print "</div>\n";
3007         }
3008         git_project_list_body(\@list, $order);
3009         git_footer_html();
3010 }
3011
3012 sub git_forks {
3013         my $order = $cgi->param('o');
3014         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3015                 die_error(undef, "Unknown order parameter");
3016         }
3017
3018         my @list = git_get_projects_list($project);
3019         if (!@list) {
3020                 die_error(undef, "No forks found");
3021         }
3022
3023         git_header_html();
3024         git_print_page_nav('','');
3025         git_print_header_div('summary', "$project forks");
3026         git_project_list_body(\@list, $order);
3027         git_footer_html();
3028 }
3029
3030 sub git_project_index {
3031         my @projects = git_get_projects_list($project);
3032
3033         print $cgi->header(
3034                 -type => 'text/plain',
3035                 -charset => 'utf-8',
3036                 -content_disposition => 'inline; filename="index.aux"');
3037
3038         foreach my $pr (@projects) {
3039                 if (!exists $pr->{'owner'}) {
3040                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3041                 }
3042
3043                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3044                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3045                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3046                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3047                 $path  =~ s/ /\+/g;
3048                 $owner =~ s/ /\+/g;
3049
3050                 print "$path $owner\n";
3051         }
3052 }
3053
3054 sub git_summary {
3055         my $descr = git_get_project_description($project) || "none";
3056         my %co = parse_commit("HEAD");
3057         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3058         my $head = $co{'id'};
3059
3060         my $owner = git_get_project_owner($project);
3061
3062         my $refs = git_get_references();
3063         # These get_*_list functions return one more to allow us to see if
3064         # there are more ...
3065         my @taglist  = git_get_tags_list(16);
3066         my @headlist = git_get_heads_list(16);
3067         my @forklist;
3068         my ($check_forks) = gitweb_check_feature('forks');
3069
3070         if ($check_forks) {
3071                 @forklist = git_get_projects_list($project);
3072         }
3073
3074         git_header_html();
3075         git_print_page_nav('summary','', $head);
3076
3077         print "<div class=\"title\">&nbsp;</div>\n";
3078         print "<table cellspacing=\"0\">\n" .
3079               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3080               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3081               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3082         # use per project git URL list in $projectroot/$project/cloneurl
3083         # or make project git URL from git base URL and project name
3084         my $url_tag = "URL";
3085         my @url_list = git_get_project_url_list($project);
3086         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3087         foreach my $git_url (@url_list) {
3088                 next unless $git_url;
3089                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3090                 $url_tag = "";
3091         }
3092         print "</table>\n";
3093
3094         if (-s "$projectroot/$project/README.html") {
3095                 if (open my $fd, "$projectroot/$project/README.html") {
3096                         print "<div class=\"title\">readme</div>\n";
3097                         print $_ while (<$fd>);
3098                         close $fd;
3099                 }
3100         }
3101
3102         # we need to request one more than 16 (0..15) to check if
3103         # those 16 are all
3104         my @commitlist = parse_commits($head, 17);
3105         git_print_header_div('shortlog');
3106         git_shortlog_body(\@commitlist, 0, 15, $refs,
3107                           $#commitlist <=  15 ? undef :
3108                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3109
3110         if (@taglist) {
3111                 git_print_header_div('tags');
3112                 git_tags_body(\@taglist, 0, 15,
3113                               $#taglist <=  15 ? undef :
3114                               $cgi->a({-href => href(action=>"tags")}, "..."));
3115         }
3116
3117         if (@headlist) {
3118                 git_print_header_div('heads');
3119                 git_heads_body(\@headlist, $head, 0, 15,
3120                                $#headlist <= 15 ? undef :
3121                                $cgi->a({-href => href(action=>"heads")}, "..."));
3122         }
3123
3124         if (@forklist) {
3125                 git_print_header_div('forks');
3126                 git_project_list_body(\@forklist, undef, 0, 15,
3127                                       $#forklist <= 15 ? undef :
3128                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3129                                       'noheader');
3130         }
3131
3132         git_footer_html();
3133 }
3134
3135 sub git_tag {
3136         my $head = git_get_head_hash($project);
3137         git_header_html();
3138         git_print_page_nav('','', $head,undef,$head);
3139         my %tag = parse_tag($hash);
3140         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3141         print "<div class=\"title_text\">\n" .
3142               "<table cellspacing=\"0\">\n" .
3143               "<tr>\n" .
3144               "<td>object</td>\n" .
3145               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3146                                $tag{'object'}) . "</td>\n" .
3147               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3148                                               $tag{'type'}) . "</td>\n" .
3149               "</tr>\n";
3150         if (defined($tag{'author'})) {
3151                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3152                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3153                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3154                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3155                         "</td></tr>\n";
3156         }
3157         print "</table>\n\n" .
3158               "</div>\n";
3159         print "<div class=\"page_body\">";
3160         my $comment = $tag{'comment'};
3161         foreach my $line (@$comment) {
3162                 chomp $line;
3163                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3164         }
3165         print "</div>\n";
3166         git_footer_html();
3167 }
3168
3169 sub git_blame2 {
3170         my $fd;
3171         my $ftype;
3172
3173         my ($have_blame) = gitweb_check_feature('blame');
3174         if (!$have_blame) {
3175                 die_error('403 Permission denied', "Permission denied");
3176         }
3177         die_error('404 Not Found', "File name not defined") if (!$file_name);
3178         $hash_base ||= git_get_head_hash($project);
3179         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3180         my %co = parse_commit($hash_base)
3181                 or die_error(undef, "Reading commit failed");
3182         if (!defined $hash) {
3183                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3184                         or die_error(undef, "Error looking up file");
3185         }
3186         $ftype = git_get_type($hash);
3187         if ($ftype !~ "blob") {
3188                 die_error('400 Bad Request', "Object is not a blob");
3189         }
3190         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3191               $file_name, $hash_base)
3192                 or die_error(undef, "Open git-blame failed");
3193         git_header_html();
3194         my $formats_nav =
3195                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3196                         "blob") .
3197                 " | " .
3198                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3199                         "history") .
3200                 " | " .
3201                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3202                         "HEAD");
3203         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3204         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3205         git_print_page_path($file_name, $ftype, $hash_base);
3206         my @rev_color = (qw(light2 dark2));
3207         my $num_colors = scalar(@rev_color);
3208         my $current_color = 0;
3209         my $last_rev;
3210         print <<HTML;
3211 <div class="page_body">
3212 <table class="blame">
3213 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3214 HTML
3215         my %metainfo = ();
3216         while (1) {
3217                 $_ = <$fd>;
3218                 last unless defined $_;
3219                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3220                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3221                 if (!exists $metainfo{$full_rev}) {
3222                         $metainfo{$full_rev} = {};
3223                 }
3224                 my $meta = $metainfo{$full_rev};
3225                 while (<$fd>) {
3226                         last if (s/^\t//);
3227                         if (/^(\S+) (.*)$/) {
3228                                 $meta->{$1} = $2;
3229                         }
3230                 }
3231                 my $data = $_;
3232                 chomp $data;
3233                 my $rev = substr($full_rev, 0, 8);
3234                 my $author = $meta->{'author'};
3235                 my %date = parse_date($meta->{'author-time'},
3236                                       $meta->{'author-tz'});
3237                 my $date = $date{'iso-tz'};
3238                 if ($group_size) {
3239                         $current_color = ++$current_color % $num_colors;
3240                 }
3241                 print "<tr class=\"$rev_color[$current_color]\">\n";
3242                 if ($group_size) {
3243                         print "<td class=\"sha1\"";
3244                         print " title=\"". esc_html($author) . ", $date\"";
3245                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3246                         print ">";
3247                         print $cgi->a({-href => href(action=>"commit",
3248                                                      hash=>$full_rev,
3249                                                      file_name=>$file_name)},
3250                                       esc_html($rev));
3251                         print "</td>\n";
3252                 }
3253                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3254                         or die_error(undef, "Open git-rev-parse failed");
3255                 my $parent_commit = <$dd>;
3256                 close $dd;
3257                 chomp($parent_commit);
3258                 my $blamed = href(action => 'blame',
3259                                   file_name => $meta->{'filename'},
3260                                   hash_base => $parent_commit);
3261                 print "<td class=\"linenr\">";
3262                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3263                                 -id => "l$lineno",
3264                                 -class => "linenr" },
3265                               esc_html($lineno));
3266                 print "</td>";
3267                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3268                 print "</tr>\n";
3269         }
3270         print "</table>\n";
3271         print "</div>";
3272         close $fd
3273                 or print "Reading blob failed\n";
3274         git_footer_html();
3275 }
3276
3277 sub git_blame {
3278         my $fd;
3279
3280         my ($have_blame) = gitweb_check_feature('blame');
3281         if (!$have_blame) {
3282                 die_error('403 Permission denied', "Permission denied");
3283         }
3284         die_error('404 Not Found', "File name not defined") if (!$file_name);
3285         $hash_base ||= git_get_head_hash($project);
3286         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3287         my %co = parse_commit($hash_base)
3288                 or die_error(undef, "Reading commit failed");
3289         if (!defined $hash) {
3290                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3291                         or die_error(undef, "Error lookup file");
3292         }
3293         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3294                 or die_error(undef, "Open git-annotate failed");
3295         git_header_html();
3296         my $formats_nav =
3297                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3298                         "blob") .
3299                 " | " .
3300                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3301                         "history") .
3302                 " | " .
3303                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3304                         "HEAD");
3305         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3306         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3307         git_print_page_path($file_name, 'blob', $hash_base);
3308         print "<div class=\"page_body\">\n";
3309         print <<HTML;
3310 <table class="blame">
3311   <tr>
3312     <th>Commit</th>
3313     <th>Age</th>
3314     <th>Author</th>
3315     <th>Line</th>
3316     <th>Data</th>
3317   </tr>
3318 HTML
3319         my @line_class = (qw(light dark));
3320         my $line_class_len = scalar (@line_class);
3321         my $line_class_num = $#line_class;
3322         while (my $line = <$fd>) {
3323                 my $long_rev;
3324                 my $short_rev;
3325                 my $author;
3326                 my $time;
3327                 my $lineno;
3328                 my $data;
3329                 my $age;
3330                 my $age_str;
3331                 my $age_class;
3332
3333                 chomp $line;
3334                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3335
3336                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3337                         $long_rev = $1;
3338                         $author   = $2;
3339                         $time     = $3;
3340                         $lineno   = $4;
3341                         $data     = $5;
3342                 } else {
3343                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3344                         next;
3345                 }
3346                 $short_rev  = substr ($long_rev, 0, 8);
3347                 $age        = time () - $time;
3348                 $age_str    = age_string ($age);
3349                 $age_str    =~ s/ /&nbsp;/g;
3350                 $age_class  = age_class($age);
3351                 $author     = esc_html ($author);
3352                 $author     =~ s/ /&nbsp;/g;
3353
3354                 $data = untabify($data);
3355                 $data = esc_html ($data);
3356
3357                 print <<HTML;
3358   <tr class="$line_class[$line_class_num]">
3359     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3360     <td class="$age_class">$age_str</td>
3361     <td>$author</td>
3362     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3363     <td class="pre">$data</td>
3364   </tr>
3365 HTML
3366         } # while (my $line = <$fd>)
3367         print "</table>\n\n";
3368         close $fd
3369                 or print "Reading blob failed.\n";
3370         print "</div>";
3371         git_footer_html();
3372 }
3373
3374 sub git_tags {
3375         my $head = git_get_head_hash($project);
3376         git_header_html();
3377         git_print_page_nav('','', $head,undef,$head);
3378         git_print_header_div('summary', $project);
3379
3380         my @tagslist = git_get_tags_list();
3381         if (@tagslist) {
3382                 git_tags_body(\@tagslist);
3383         }
3384         git_footer_html();
3385 }
3386
3387 sub git_heads {
3388         my $head = git_get_head_hash($project);
3389         git_header_html();
3390         git_print_page_nav('','', $head,undef,$head);
3391         git_print_header_div('summary', $project);
3392
3393         my @headslist = git_get_heads_list();
3394         if (@headslist) {
3395                 git_heads_body(\@headslist, $head);
3396         }
3397         git_footer_html();
3398 }
3399
3400 sub git_blob_plain {
3401         my $expires;
3402
3403         if (!defined $hash) {
3404                 if (defined $file_name) {
3405                         my $base = $hash_base || git_get_head_hash($project);
3406                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3407                                 or die_error(undef, "Error lookup file");
3408                 } else {
3409                         die_error(undef, "No file name defined");
3410                 }
3411         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3412                 # blobs defined by non-textual hash id's can be cached
3413                 $expires = "+1d";
3414         }
3415
3416         my $type = shift;
3417         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3418                 or die_error(undef, "Couldn't cat $file_name, $hash");
3419
3420         $type ||= blob_mimetype($fd, $file_name);
3421
3422         # save as filename, even when no $file_name is given
3423         my $save_as = "$hash";
3424         if (defined $file_name) {
3425                 $save_as = $file_name;
3426         } elsif ($type =~ m/^text\//) {
3427                 $save_as .= '.txt';
3428         }
3429
3430         print $cgi->header(
3431                 -type => "$type",
3432                 -expires=>$expires,
3433                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3434         undef $/;
3435         binmode STDOUT, ':raw';
3436         print <$fd>;
3437         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3438         $/ = "\n";
3439         close $fd;
3440 }
3441
3442 sub git_blob {
3443         my $expires;
3444
3445         if (!defined $hash) {
3446                 if (defined $file_name) {
3447                         my $base = $hash_base || git_get_head_hash($project);
3448                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3449                                 or die_error(undef, "Error lookup file");
3450                 } else {
3451                         die_error(undef, "No file name defined");
3452                 }
3453         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3454                 # blobs defined by non-textual hash id's can be cached
3455                 $expires = "+1d";
3456         }
3457
3458         my ($have_blame) = gitweb_check_feature('blame');
3459         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3460                 or die_error(undef, "Couldn't cat $file_name, $hash");
3461         my $mimetype = blob_mimetype($fd, $file_name);
3462         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3463                 close $fd;
3464                 return git_blob_plain($mimetype);
3465         }
3466         # we can have blame only for text/* mimetype
3467         $have_blame &&= ($mimetype =~ m!^text/!);
3468
3469         git_header_html(undef, $expires);
3470         my $formats_nav = '';
3471         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3472                 if (defined $file_name) {
3473                         if ($have_blame) {
3474                                 $formats_nav .=
3475                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3476                                                                hash=>$hash, file_name=>$file_name)},
3477                                                 "blame") .
3478                                         " | ";
3479                         }
3480                         $formats_nav .=
3481                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3482                                                        hash=>$hash, file_name=>$file_name)},
3483                                         "history") .
3484                                 " | " .
3485                                 $cgi->a({-href => href(action=>"blob_plain",
3486                                                        hash=>$hash, file_name=>$file_name)},
3487                                         "raw") .
3488                                 " | " .
3489                                 $cgi->a({-href => href(action=>"blob",
3490                                                        hash_base=>"HEAD", file_name=>$file_name)},
3491                                         "HEAD");
3492                 } else {
3493                         $formats_nav .=
3494                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3495                 }
3496                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3497                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3498         } else {
3499                 print "<div class=\"page_nav\">\n" .
3500                       "<br/><br/></div>\n" .
3501                       "<div class=\"title\">$hash</div>\n";
3502         }
3503         git_print_page_path($file_name, "blob", $hash_base);
3504         print "<div class=\"page_body\">\n";
3505         if ($mimetype =~ m!^text/!) {
3506                 my $nr;
3507                 while (my $line = <$fd>) {
3508                         chomp $line;
3509                         $nr++;
3510                         $line = untabify($line);
3511                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3512                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3513                 }
3514         } elsif ($mimetype =~ m!^image/!) {
3515                 print qq!<img type="$mimetype"!;
3516                 if ($file_name) {
3517                         print qq! alt="$file_name" title="$file_name"!;
3518                 }
3519                 print qq! src="! .
3520                       href(action=>"blob_plain", hash=>$hash,
3521                            hash_base=>$hash_base, file_name=>$file_name) .
3522                       qq!" />\n!;
3523         }
3524         close $fd
3525                 or print "Reading blob failed.\n";
3526         print "</div>";
3527         git_footer_html();
3528 }
3529
3530 sub git_tree {
3531         my $have_snapshot = gitweb_have_snapshot();
3532
3533         if (!defined $hash_base) {
3534                 $hash_base = "HEAD";
3535         }
3536         if (!defined $hash) {
3537                 if (defined $file_name) {
3538                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3539                 } else {
3540                         $hash = $hash_base;
3541                 }
3542         }
3543         $/ = "\0";
3544         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3545                 or die_error(undef, "Open git-ls-tree failed");
3546         my @entries = map { chomp; $_ } <$fd>;
3547         close $fd or die_error(undef, "Reading tree failed");
3548         $/ = "\n";
3549
3550         my $refs = git_get_references();
3551         my $ref = format_ref_marker($refs, $hash_base);
3552         git_header_html();
3553         my $basedir = '';
3554         my ($have_blame) = gitweb_check_feature('blame');
3555         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3556                 my @views_nav = ();
3557                 if (defined $file_name) {
3558                         push @views_nav,
3559                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3560                                                        hash=>$hash, file_name=>$file_name)},
3561                                         "history"),
3562                                 $cgi->a({-href => href(action=>"tree",
3563                                                        hash_base=>"HEAD", file_name=>$file_name)},
3564                                         "HEAD"),
3565                 }
3566                 if ($have_snapshot) {
3567                         # FIXME: Should be available when we have no hash base as well.
3568                         push @views_nav,
3569                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3570                                         "snapshot");
3571                 }
3572                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3573                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3574         } else {
3575                 undef $hash_base;
3576                 print "<div class=\"page_nav\">\n";
3577                 print "<br/><br/></div>\n";
3578                 print "<div class=\"title\">$hash</div>\n";
3579         }
3580         if (defined $file_name) {
3581                 $basedir = $file_name;
3582                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3583                         $basedir .= '/';
3584                 }
3585         }
3586         git_print_page_path($file_name, 'tree', $hash_base);
3587         print "<div class=\"page_body\">\n";
3588         print "<table cellspacing=\"0\">\n";
3589         my $alternate = 1;
3590         # '..' (top directory) link if possible
3591         if (defined $hash_base &&
3592             defined $file_name && $file_name =~ m![^/]+$!) {
3593                 if ($alternate) {
3594                         print "<tr class=\"dark\">\n";
3595                 } else {
3596                         print "<tr class=\"light\">\n";
3597                 }
3598                 $alternate ^= 1;
3599
3600                 my $up = $file_name;
3601                 $up =~ s!/?[^/]+$!!;
3602                 undef $up unless $up;
3603                 # based on git_print_tree_entry
3604                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3605                 print '<td class="list">';
3606                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3607                                              file_name=>$up)},
3608                               "..");
3609                 print "</td>\n";
3610                 print "<td class=\"link\"></td>\n";
3611
3612                 print "</tr>\n";
3613         }
3614         foreach my $line (@entries) {
3615                 my %t = parse_ls_tree_line($line, -z => 1);
3616
3617                 if ($alternate) {
3618                         print "<tr class=\"dark\">\n";
3619                 } else {
3620                         print "<tr class=\"light\">\n";
3621                 }
3622                 $alternate ^= 1;
3623
3624                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3625
3626                 print "</tr>\n";
3627         }
3628         print "</table>\n" .
3629               "</div>";
3630         git_footer_html();
3631 }
3632
3633 sub git_snapshot {
3634         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3635         my $have_snapshot = (defined $ctype && defined $suffix);
3636         if (!$have_snapshot) {
3637                 die_error('403 Permission denied', "Permission denied");
3638         }
3639
3640         if (!defined $hash) {
3641                 $hash = git_get_head_hash($project);
3642         }
3643
3644         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3645
3646         print $cgi->header(
3647                 -type => "application/$ctype",
3648                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3649                 -status => '200 OK');
3650
3651         my $git = git_cmd_str();
3652         my $name = $project;
3653         $name =~ s/\047/\047\\\047\047/g;
3654         open my $fd, "-|",
3655                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3656                 or die_error(undef, "Execute git-tar-tree failed");
3657         binmode STDOUT, ':raw';
3658         print <$fd>;
3659         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3660         close $fd;
3661
3662 }
3663
3664 sub git_log {
3665         my $head = git_get_head_hash($project);
3666         if (!defined $hash) {
3667                 $hash = $head;
3668         }
3669         if (!defined $page) {
3670                 $page = 0;
3671         }
3672         my $refs = git_get_references();
3673
3674         my @commitlist = parse_commits($hash, 101, (100 * $page));
3675
3676         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3677
3678         git_header_html();
3679         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3680
3681         if (!@commitlist) {
3682                 my %co = parse_commit($hash);
3683
3684                 git_print_header_div('summary', $project);
3685                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3686         }
3687         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3688         for (my $i = 0; $i <= $to; $i++) {
3689                 my %co = %{$commitlist[$i]};
3690                 next if !%co;
3691                 my $commit = $co{'id'};
3692                 my $ref = format_ref_marker($refs, $commit);
3693                 my %ad = parse_date($co{'author_epoch'});
3694                 git_print_header_div('commit',
3695                                "<span class=\"age\">$co{'age_string'}</span>" .
3696                                esc_html($co{'title'}) . $ref,
3697                                $commit);
3698                 print "<div class=\"title_text\">\n" .
3699                       "<div class=\"log_link\">\n" .
3700                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3701                       " | " .
3702                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3703                       " | " .
3704                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3705                       "<br/>\n" .
3706                       "</div>\n" .
3707                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3708                       "</div>\n";
3709
3710                 print "<div class=\"log_body\">\n";
3711                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3712                 print "</div>\n";
3713         }
3714         if ($#commitlist >= 100) {
3715                 print "<div class=\"page_nav\">\n";
3716                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3717                                -accesskey => "n", -title => "Alt-n"}, "next");
3718                 print "</div>\n";
3719         }
3720         git_footer_html();
3721 }
3722
3723 sub git_commit {
3724         $hash ||= $hash_base || "HEAD";
3725         my %co = parse_commit($hash);
3726         if (!%co) {
3727                 die_error(undef, "Unknown commit object");
3728         }
3729         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3730         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3731
3732         my $parent  = $co{'parent'};
3733         my $parents = $co{'parents'}; # listref
3734
3735         # we need to prepare $formats_nav before any parameter munging
3736         my $formats_nav;
3737         if (!defined $parent) {
3738                 # --root commitdiff
3739                 $formats_nav .= '(initial)';
3740         } elsif (@$parents == 1) {
3741                 # single parent commit
3742                 $formats_nav .=
3743                         '(parent: ' .
3744                         $cgi->a({-href => href(action=>"commit",
3745                                                hash=>$parent)},
3746                                 esc_html(substr($parent, 0, 7))) .
3747                         ')';
3748         } else {
3749                 # merge commit
3750                 $formats_nav .=
3751                         '(merge: ' .
3752                         join(' ', map {
3753                                 $cgi->a({-href => href(action=>"commit",
3754                                                        hash=>$_)},
3755                                         esc_html(substr($_, 0, 7)));
3756                         } @$parents ) .
3757                         ')';
3758         }
3759
3760         if (!defined $parent) {
3761                 $parent = "--root";
3762         }
3763         my @difftree;
3764         if (@$parents <= 1) {
3765                 # difftree output is not printed for merges
3766                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3767                         @diff_opts, $parent, $hash, "--"
3768                         or die_error(undef, "Open git-diff-tree failed");
3769                 @difftree = map { chomp; $_ } <$fd>;
3770                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3771         }
3772
3773         # non-textual hash id's can be cached
3774         my $expires;
3775         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3776                 $expires = "+1d";
3777         }
3778         my $refs = git_get_references();
3779         my $ref = format_ref_marker($refs, $co{'id'});
3780
3781         my $have_snapshot = gitweb_have_snapshot();
3782
3783         git_header_html(undef, $expires);
3784         git_print_page_nav('commit', '',
3785                            $hash, $co{'tree'}, $hash,
3786                            $formats_nav);
3787
3788         if (defined $co{'parent'}) {
3789                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3790         } else {
3791                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3792         }
3793         print "<div class=\"title_text\">\n" .
3794               "<table cellspacing=\"0\">\n";
3795         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3796               "<tr>" .
3797               "<td></td><td> $ad{'rfc2822'}";
3798         if ($ad{'hour_local'} < 6) {
3799                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3800                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3801         } else {
3802                 printf(" (%02d:%02d %s)",
3803                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3804         }
3805         print "</td>" .
3806               "</tr>\n";
3807         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3808         print "<tr><td></td><td> $cd{'rfc2822'}" .
3809               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3810               "</td></tr>\n";
3811         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3812         print "<tr>" .
3813               "<td>tree</td>" .
3814               "<td class=\"sha1\">" .
3815               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3816                        class => "list"}, $co{'tree'}) .
3817               "</td>" .
3818               "<td class=\"link\">" .
3819               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3820                       "tree");
3821         if ($have_snapshot) {
3822                 print " | " .
3823                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3824         }
3825         print "</td>" .
3826               "</tr>\n";
3827
3828         foreach my $par (@$parents) {
3829                 print "<tr>" .
3830                       "<td>parent</td>" .
3831                       "<td class=\"sha1\">" .
3832                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3833                                class => "list"}, $par) .
3834                       "</td>" .
3835                       "<td class=\"link\">" .
3836                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3837                       " | " .
3838                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3839                       "</td>" .
3840                       "</tr>\n";
3841         }
3842         print "</table>".
3843               "</div>\n";
3844
3845         print "<div class=\"page_body\">\n";
3846         git_print_log($co{'comment'});
3847         print "</div>\n";
3848
3849         if (@$parents <= 1) {
3850                 # do not output difftree/whatchanged for merges
3851                 git_difftree_body(\@difftree, $hash, $parent);
3852         }
3853
3854         git_footer_html();
3855 }
3856
3857 sub git_object {
3858         # object is defined by:
3859         # - hash or hash_base alone
3860         # - hash_base and file_name
3861         my $type;
3862
3863         # - hash or hash_base alone
3864         if ($hash || ($hash_base && !defined $file_name)) {
3865                 my $object_id = $hash || $hash_base;
3866
3867                 my $git_command = git_cmd_str();
3868                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3869                         or die_error('404 Not Found', "Object does not exist");
3870                 $type = <$fd>;
3871                 chomp $type;
3872                 close $fd
3873                         or die_error('404 Not Found', "Object does not exist");
3874
3875         # - hash_base and file_name
3876         } elsif ($hash_base && defined $file_name) {
3877                 $file_name =~ s,/+$,,;
3878
3879                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3880                         or die_error('404 Not Found', "Base object does not exist");
3881
3882                 # here errors should not hapen
3883                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3884                         or die_error(undef, "Open git-ls-tree failed");
3885                 my $line = <$fd>;
3886                 close $fd;
3887
3888                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3889                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3890                         die_error('404 Not Found', "File or directory for given base does not exist");
3891                 }
3892                 $type = $2;
3893                 $hash = $3;
3894         } else {
3895                 die_error('404 Not Found', "Not enough information to find object");
3896         }
3897
3898         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3899                                           hash=>$hash, hash_base=>$hash_base,
3900                                           file_name=>$file_name),
3901                              -status => '302 Found');
3902 }
3903
3904 sub git_blobdiff {
3905         my $format = shift || 'html';
3906
3907         my $fd;
3908         my @difftree;
3909         my %diffinfo;
3910         my $expires;
3911
3912         # preparing $fd and %diffinfo for git_patchset_body
3913         # new style URI
3914         if (defined $hash_base && defined $hash_parent_base) {
3915                 if (defined $file_name) {
3916                         # read raw output
3917                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3918                                 $hash_parent_base, $hash_base,
3919                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
3920                                 or die_error(undef, "Open git-diff-tree failed");
3921                         @difftree = map { chomp; $_ } <$fd>;
3922                         close $fd
3923                                 or die_error(undef, "Reading git-diff-tree failed");
3924                         @difftree
3925                                 or die_error('404 Not Found', "Blob diff not found");
3926
3927                 } elsif (defined $hash &&
3928                          $hash =~ /[0-9a-fA-F]{40}/) {
3929                         # try to find filename from $hash
3930
3931                         # read filtered raw output
3932                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3933                                 $hash_parent_base, $hash_base, "--"
3934                                 or die_error(undef, "Open git-diff-tree failed");
3935                         @difftree =
3936                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3937                                 # $hash == to_id
3938                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3939                                 map { chomp; $_ } <$fd>;
3940                         close $fd
3941                                 or die_error(undef, "Reading git-diff-tree failed");
3942                         @difftree
3943                                 or die_error('404 Not Found', "Blob diff not found");
3944
3945                 } else {
3946                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3947                 }
3948
3949                 if (@difftree > 1) {
3950                         die_error('404 Not Found', "Ambiguous blob diff specification");
3951                 }
3952
3953                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3954                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3955                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3956
3957                 $hash_parent ||= $diffinfo{'from_id'};
3958                 $hash        ||= $diffinfo{'to_id'};
3959
3960                 # non-textual hash id's can be cached
3961                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3962                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3963                         $expires = '+1d';
3964                 }
3965
3966                 # open patch output
3967                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3968                         '-p', ($format eq 'html' ? "--full-index" : ()),
3969                         $hash_parent_base, $hash_base,
3970                         "--", (defined $file_parent ? $file_parent : ()), $file_name
3971                         or die_error(undef, "Open git-diff-tree failed");
3972         }
3973
3974         # old/legacy style URI
3975         if (!%diffinfo && # if new style URI failed
3976             defined $hash && defined $hash_parent) {
3977                 # fake git-diff-tree raw output
3978                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3979                 $diffinfo{'from_id'} = $hash_parent;
3980                 $diffinfo{'to_id'}   = $hash;
3981                 if (defined $file_name) {
3982                         if (defined $file_parent) {
3983                                 $diffinfo{'status'} = '2';
3984                                 $diffinfo{'from_file'} = $file_parent;
3985                                 $diffinfo{'to_file'}   = $file_name;
3986                         } else { # assume not renamed
3987                                 $diffinfo{'status'} = '1';
3988                                 $diffinfo{'from_file'} = $file_name;
3989                                 $diffinfo{'to_file'}   = $file_name;
3990                         }
3991                 } else { # no filename given
3992                         $diffinfo{'status'} = '2';
3993                         $diffinfo{'from_file'} = $hash_parent;
3994                         $diffinfo{'to_file'}   = $hash;
3995                 }
3996
3997                 # non-textual hash id's can be cached
3998                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3999                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4000                         $expires = '+1d';
4001                 }
4002
4003                 # open patch output
4004                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
4005                         '-p', ($format eq 'html' ? "--full-index" : ()),
4006                         $hash_parent, $hash, "--"
4007                         or die_error(undef, "Open git-diff failed");
4008         } else  {
4009                 die_error('404 Not Found', "Missing one of the blob diff parameters")
4010                         unless %diffinfo;
4011         }
4012
4013         # header
4014         if ($format eq 'html') {
4015                 my $formats_nav =
4016                         $cgi->a({-href => href(action=>"blobdiff_plain",
4017                                                hash=>$hash, hash_parent=>$hash_parent,
4018                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4019                                                file_name=>$file_name, file_parent=>$file_parent)},
4020                                 "raw");
4021                 git_header_html(undef, $expires);
4022                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4023                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4024                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4025                 } else {
4026                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4027                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4028                 }
4029                 if (defined $file_name) {
4030                         git_print_page_path($file_name, "blob", $hash_base);
4031                 } else {
4032                         print "<div class=\"page_path\"></div>\n";
4033                 }
4034
4035         } elsif ($format eq 'plain') {
4036                 print $cgi->header(
4037                         -type => 'text/plain',
4038                         -charset => 'utf-8',
4039                         -expires => $expires,
4040                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4041
4042                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4043
4044         } else {
4045                 die_error(undef, "Unknown blobdiff format");
4046         }
4047
4048         # patch
4049         if ($format eq 'html') {
4050                 print "<div class=\"page_body\">\n";
4051
4052                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4053                 close $fd;
4054
4055                 print "</div>\n"; # class="page_body"
4056                 git_footer_html();
4057
4058         } else {
4059                 while (my $line = <$fd>) {
4060                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4061                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4062
4063                         print $line;
4064
4065                         last if $line =~ m!^\+\+\+!;
4066                 }
4067                 local $/ = undef;
4068                 print <$fd>;
4069                 close $fd;
4070         }
4071 }
4072
4073 sub git_blobdiff_plain {
4074         git_blobdiff('plain');
4075 }
4076
4077 sub git_commitdiff {
4078         my $format = shift || 'html';
4079         $hash ||= $hash_base || "HEAD";
4080         my %co = parse_commit($hash);
4081         if (!%co) {
4082                 die_error(undef, "Unknown commit object");
4083         }
4084
4085         # we need to prepare $formats_nav before any parameter munging
4086         my $formats_nav;
4087         if ($format eq 'html') {
4088                 $formats_nav =
4089                         $cgi->a({-href => href(action=>"commitdiff_plain",
4090                                                hash=>$hash, hash_parent=>$hash_parent)},
4091                                 "raw");
4092
4093                 if (defined $hash_parent) {
4094                         # commitdiff with two commits given
4095                         my $hash_parent_short = $hash_parent;
4096                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4097                                 $hash_parent_short = substr($hash_parent, 0, 7);
4098                         }
4099                         $formats_nav .=
4100                                 ' (from: ' .
4101                                 $cgi->a({-href => href(action=>"commitdiff",
4102                                                        hash=>$hash_parent)},
4103                                         esc_html($hash_parent_short)) .
4104                                 ')';
4105                 } elsif (!$co{'parent'}) {
4106                         # --root commitdiff
4107                         $formats_nav .= ' (initial)';
4108                 } elsif (scalar @{$co{'parents'}} == 1) {
4109                         # single parent commit
4110                         $formats_nav .=
4111                                 ' (parent: ' .
4112                                 $cgi->a({-href => href(action=>"commitdiff",
4113                                                        hash=>$co{'parent'})},
4114                                         esc_html(substr($co{'parent'}, 0, 7))) .
4115                                 ')';
4116                 } else {
4117                         # merge commit
4118                         $formats_nav .=
4119                                 ' (merge: ' .
4120                                 join(' ', map {
4121                                         $cgi->a({-href => href(action=>"commitdiff",
4122                                                                hash=>$_)},
4123                                                 esc_html(substr($_, 0, 7)));
4124                                 } @{$co{'parents'}} ) .
4125                                 ')';
4126                 }
4127         }
4128
4129         if (!defined $hash_parent) {
4130                 $hash_parent = $co{'parent'} || '--root';
4131         }
4132
4133         # read commitdiff
4134         my $fd;
4135         my @difftree;
4136         if ($format eq 'html') {
4137                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4138                         "--no-commit-id", "--patch-with-raw", "--full-index",
4139                         $hash_parent, $hash, "--"
4140                         or die_error(undef, "Open git-diff-tree failed");
4141
4142                 while (my $line = <$fd>) {
4143                         chomp $line;
4144                         # empty line ends raw part of diff-tree output
4145                         last unless $line;
4146                         push @difftree, $line;
4147                 }
4148
4149         } elsif ($format eq 'plain') {
4150                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4151                         '-p', $hash_parent, $hash, "--"
4152                         or die_error(undef, "Open git-diff-tree failed");
4153
4154         } else {
4155                 die_error(undef, "Unknown commitdiff format");
4156         }
4157
4158         # non-textual hash id's can be cached
4159         my $expires;
4160         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4161                 $expires = "+1d";
4162         }
4163
4164         # write commit message
4165         if ($format eq 'html') {
4166                 my $refs = git_get_references();
4167                 my $ref = format_ref_marker($refs, $co{'id'});
4168
4169                 git_header_html(undef, $expires);
4170                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4171                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4172                 git_print_authorship(\%co);
4173                 print "<div class=\"page_body\">\n";
4174                 if (@{$co{'comment'}} > 1) {
4175                         print "<div class=\"log\">\n";
4176                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4177                         print "</div>\n"; # class="log"
4178                 }
4179
4180         } elsif ($format eq 'plain') {
4181                 my $refs = git_get_references("tags");
4182                 my $tagname = git_get_rev_name_tags($hash);
4183                 my $filename = basename($project) . "-$hash.patch";
4184
4185                 print $cgi->header(
4186                         -type => 'text/plain',
4187                         -charset => 'utf-8',
4188                         -expires => $expires,
4189                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4190                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4191                 print <<TEXT;
4192 From: $co{'author'}
4193 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4194 Subject: $co{'title'}
4195 TEXT
4196                 print "X-Git-Tag: $tagname\n" if $tagname;
4197                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4198
4199                 foreach my $line (@{$co{'comment'}}) {
4200                         print "$line\n";
4201                 }
4202                 print "---\n\n";
4203         }
4204
4205         # write patch
4206         if ($format eq 'html') {
4207                 git_difftree_body(\@difftree, $hash, $hash_parent);
4208                 print "<br/>\n";
4209
4210                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4211                 close $fd;
4212                 print "</div>\n"; # class="page_body"
4213                 git_footer_html();
4214
4215         } elsif ($format eq 'plain') {
4216                 local $/ = undef;
4217                 print <$fd>;
4218                 close $fd
4219                         or print "Reading git-diff-tree failed\n";
4220         }
4221 }
4222
4223 sub git_commitdiff_plain {
4224         git_commitdiff('plain');
4225 }
4226
4227 sub git_history {
4228         if (!defined $hash_base) {
4229                 $hash_base = git_get_head_hash($project);
4230         }
4231         if (!defined $page) {
4232                 $page = 0;
4233         }
4234         my $ftype;
4235         my %co = parse_commit($hash_base);
4236         if (!%co) {
4237                 die_error(undef, "Unknown commit object");
4238         }
4239
4240         my $refs = git_get_references();
4241         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4242
4243         if (!defined $hash && defined $file_name) {
4244                 $hash = git_get_hash_by_path($hash_base, $file_name);
4245         }
4246         if (defined $hash) {
4247                 $ftype = git_get_type($hash);
4248         }
4249
4250         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4251
4252         my $paging_nav = '';
4253         if ($page > 0) {
4254                 $paging_nav .=
4255                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4256                                                file_name=>$file_name)},
4257                                 "first");
4258                 $paging_nav .= " &sdot; " .
4259                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4260                                                file_name=>$file_name, page=>$page-1),
4261                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4262         } else {
4263                 $paging_nav .= "first";
4264                 $paging_nav .= " &sdot; prev";
4265         }
4266         if ($#commitlist >= 100) {
4267                 $paging_nav .= " &sdot; " .
4268                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4269                                                file_name=>$file_name, page=>$page+1),
4270                                  -accesskey => "n", -title => "Alt-n"}, "next");
4271         } else {
4272                 $paging_nav .= " &sdot; next";
4273         }
4274         my $next_link = '';
4275         if ($#commitlist >= 100) {
4276                 $next_link =
4277                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4278                                                file_name=>$file_name, page=>$page+1),
4279                                  -accesskey => "n", -title => "Alt-n"}, "next");
4280         }
4281
4282         git_header_html();
4283         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4284         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4285         git_print_page_path($file_name, $ftype, $hash_base);
4286
4287         git_history_body(\@commitlist, 0, 99,
4288                          $refs, $hash_base, $ftype, $next_link);
4289
4290         git_footer_html();
4291 }
4292
4293 sub git_search {
4294         my ($have_search) = gitweb_check_feature('search');
4295         if (!$have_search) {
4296                 die_error('403 Permission denied', "Permission denied");
4297         }
4298         if (!defined $searchtext) {
4299                 die_error(undef, "Text field empty");
4300         }
4301         if (!defined $hash) {
4302                 $hash = git_get_head_hash($project);
4303         }
4304         my %co = parse_commit($hash);
4305         if (!%co) {
4306                 die_error(undef, "Unknown commit object");
4307         }
4308         if (!defined $page) {
4309                 $page = 0;
4310         }
4311
4312         $searchtype ||= 'commit';
4313         if ($searchtype eq 'pickaxe') {
4314                 # pickaxe may take all resources of your box and run for several minutes
4315                 # with every query - so decide by yourself how public you make this feature
4316                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4317                 if (!$have_pickaxe) {
4318                         die_error('403 Permission denied', "Permission denied");
4319                 }
4320         }
4321
4322         git_header_html();
4323
4324         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4325                 my $greptype;
4326                 if ($searchtype eq 'commit') {
4327                         $greptype = "--grep=";
4328                 } elsif ($searchtype eq 'author') {
4329                         $greptype = "--author=";
4330                 } elsif ($searchtype eq 'committer') {
4331                         $greptype = "--committer=";
4332                 }
4333                 $greptype .= $searchtext;
4334                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4335
4336                 my $paging_nav = '';
4337                 if ($page > 0) {
4338                         $paging_nav .=
4339                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4340                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4341                                         "first");
4342                         $paging_nav .= " &sdot; " .
4343                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4344                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4345                                                        page=>$page-1),
4346                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4347                 } else {
4348                         $paging_nav .= "first";
4349                         $paging_nav .= " &sdot; prev";
4350                 }
4351                 if ($#commitlist >= 100) {
4352                         $paging_nav .= " &sdot; " .
4353                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4354                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4355                                                        page=>$page+1),
4356                                          -accesskey => "n", -title => "Alt-n"}, "next");
4357                 } else {
4358                         $paging_nav .= " &sdot; next";
4359                 }
4360                 my $next_link = '';
4361                 if ($#commitlist >= 100) {
4362                         $next_link =
4363                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4364                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4365                                                        page=>$page+1),
4366                                          -accesskey => "n", -title => "Alt-n"}, "next");
4367                 }
4368
4369                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4370                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4371                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4372         }
4373
4374         if ($searchtype eq 'pickaxe') {
4375                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4376                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4377
4378                 print "<table cellspacing=\"0\">\n";
4379                 my $alternate = 1;
4380                 $/ = "\n";
4381                 my $git_command = git_cmd_str();
4382                 open my $fd, "-|", "$git_command rev-list $hash | " .
4383                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4384                 undef %co;
4385                 my @files;
4386                 while (my $line = <$fd>) {
4387                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4388                                 my %set;
4389                                 $set{'file'} = $6;
4390                                 $set{'from_id'} = $3;
4391                                 $set{'to_id'} = $4;
4392                                 $set{'id'} = $set{'to_id'};
4393                                 if ($set{'id'} =~ m/0{40}/) {
4394                                         $set{'id'} = $set{'from_id'};
4395                                 }
4396                                 if ($set{'id'} =~ m/0{40}/) {
4397                                         next;
4398                                 }
4399                                 push @files, \%set;
4400                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4401                                 if (%co) {
4402                                         if ($alternate) {
4403                                                 print "<tr class=\"dark\">\n";
4404                                         } else {
4405                                                 print "<tr class=\"light\">\n";
4406                                         }
4407                                         $alternate ^= 1;
4408                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4409                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4410                                               "<td>" .
4411                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4412                                                       -class => "list subject"},
4413                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4414                                         while (my $setref = shift @files) {
4415                                                 my %set = %$setref;
4416                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4417                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4418                                                               -class => "list"},
4419                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4420                                                       "<br/>\n";
4421                                         }
4422                                         print "</td>\n" .
4423                                               "<td class=\"link\">" .
4424                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4425                                               " | " .
4426                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4427                                         print "</td>\n" .
4428                                               "</tr>\n";
4429                                 }
4430                                 %co = parse_commit($1);
4431                         }
4432                 }
4433                 close $fd;
4434
4435                 print "</table>\n";
4436         }
4437         git_footer_html();
4438 }
4439
4440 sub git_search_help {
4441         git_header_html();
4442         git_print_page_nav('','', $hash,$hash,$hash);
4443         print <<EOT;
4444 <dl>
4445 <dt><b>commit</b></dt>
4446 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4447 <dt><b>author</b></dt>
4448 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4449 <dt><b>committer</b></dt>
4450 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4451 EOT
4452         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4453         if ($have_pickaxe) {
4454                 print <<EOT;
4455 <dt><b>pickaxe</b></dt>
4456 <dd>All commits that caused the string to appear or disappear from any file (changes that
4457 added, removed or "modified" the string) will be listed. This search can take a while and
4458 takes a lot of strain on the server, so please use it wisely.</dd>
4459 EOT
4460         }
4461         print "</dl>\n";
4462         git_footer_html();
4463 }
4464
4465 sub git_shortlog {
4466         my $head = git_get_head_hash($project);
4467         if (!defined $hash) {
4468                 $hash = $head;
4469         }
4470         if (!defined $page) {
4471                 $page = 0;
4472         }
4473         my $refs = git_get_references();
4474
4475         my @commitlist = parse_commits($hash, 101, (100 * $page));
4476
4477         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4478         my $next_link = '';
4479         if ($#commitlist >= 100) {
4480                 $next_link =
4481                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4482                                  -accesskey => "n", -title => "Alt-n"}, "next");
4483         }
4484
4485         git_header_html();
4486         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4487         git_print_header_div('summary', $project);
4488
4489         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4490
4491         git_footer_html();
4492 }
4493
4494 ## ......................................................................
4495 ## feeds (RSS, Atom; OPML)
4496
4497 sub git_feed {
4498         my $format = shift || 'atom';
4499         my ($have_blame) = gitweb_check_feature('blame');
4500
4501         # Atom: http://www.atomenabled.org/developers/syndication/
4502         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4503         if ($format ne 'rss' && $format ne 'atom') {
4504                 die_error(undef, "Unknown web feed format");
4505         }
4506
4507         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4508         my $head = $hash || 'HEAD';
4509         my @commitlist = parse_commits($head, 150);
4510
4511         my %latest_commit;
4512         my %latest_date;
4513         my $content_type = "application/$format+xml";
4514         if (defined $cgi->http('HTTP_ACCEPT') &&
4515                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4516                 # browser (feed reader) prefers text/xml
4517                 $content_type = 'text/xml';
4518         }
4519         if (defined($commitlist[0])) {
4520                 %latest_commit = %{$commitlist[0]};
4521                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4522                 print $cgi->header(
4523                         -type => $content_type,
4524                         -charset => 'utf-8',
4525                         -last_modified => $latest_date{'rfc2822'});
4526         } else {
4527                 print $cgi->header(
4528                         -type => $content_type,
4529                         -charset => 'utf-8');
4530         }
4531
4532         # Optimization: skip generating the body if client asks only
4533         # for Last-Modified date.
4534         return if ($cgi->request_method() eq 'HEAD');
4535
4536         # header variables
4537         my $title = "$site_name - $project/$action";
4538         my $feed_type = 'log';
4539         if (defined $hash) {
4540                 $title .= " - '$hash'";
4541                 $feed_type = 'branch log';
4542                 if (defined $file_name) {
4543                         $title .= " :: $file_name";
4544                         $feed_type = 'history';
4545                 }
4546         } elsif (defined $file_name) {
4547                 $title .= " - $file_name";
4548                 $feed_type = 'history';
4549         }
4550         $title .= " $feed_type";
4551         my $descr = git_get_project_description($project);
4552         if (defined $descr) {
4553                 $descr = esc_html($descr);
4554         } else {
4555                 $descr = "$project " .
4556                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4557                          " feed";
4558         }
4559         my $owner = git_get_project_owner($project);
4560         $owner = esc_html($owner);
4561
4562         #header
4563         my $alt_url;
4564         if (defined $file_name) {
4565                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4566         } elsif (defined $hash) {
4567                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4568         } else {
4569                 $alt_url = href(-full=>1, action=>"summary");
4570         }
4571         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4572         if ($format eq 'rss') {
4573                 print <<XML;
4574 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4575 <channel>
4576 XML
4577                 print "<title>$title</title>\n" .
4578                       "<link>$alt_url</link>\n" .
4579                       "<description>$descr</description>\n" .
4580                       "<language>en</language>\n";
4581         } elsif ($format eq 'atom') {
4582                 print <<XML;
4583 <feed xmlns="http://www.w3.org/2005/Atom">
4584 XML
4585                 print "<title>$title</title>\n" .
4586                       "<subtitle>$descr</subtitle>\n" .
4587                       '<link rel="alternate" type="text/html" href="' .
4588                       $alt_url . '" />' . "\n" .
4589                       '<link rel="self" type="' . $content_type . '" href="' .
4590                       $cgi->self_url() . '" />' . "\n" .
4591                       "<id>" . href(-full=>1) . "</id>\n" .
4592                       # use project owner for feed author
4593                       "<author><name>$owner</name></author>\n";
4594                 if (defined $favicon) {
4595                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4596                 }
4597                 if (defined $logo_url) {
4598                         # not twice as wide as tall: 72 x 27 pixels
4599                         print "<logo>" . esc_url($logo) . "</logo>\n";
4600                 }
4601                 if (! %latest_date) {
4602                         # dummy date to keep the feed valid until commits trickle in:
4603                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4604                 } else {
4605                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4606                 }
4607         }
4608
4609         # contents
4610         for (my $i = 0; $i <= $#commitlist; $i++) {
4611                 my %co = %{$commitlist[$i]};
4612                 my $commit = $co{'id'};
4613                 # we read 150, we always show 30 and the ones more recent than 48 hours
4614                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4615                         last;
4616                 }
4617                 my %cd = parse_date($co{'author_epoch'});
4618
4619                 # get list of changed files
4620                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4621                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4622                         or next;
4623                 my @difftree = map { chomp; $_ } <$fd>;
4624                 close $fd
4625                         or next;
4626
4627                 # print element (entry, item)
4628                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4629                 if ($format eq 'rss') {
4630                         print "<item>\n" .
4631                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4632                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4633                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4634                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4635                               "<link>$co_url</link>\n" .
4636                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4637                               "<content:encoded>" .
4638                               "<![CDATA[\n";
4639                 } elsif ($format eq 'atom') {
4640                         print "<entry>\n" .
4641                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4642                               "<updated>$cd{'iso-8601'}</updated>\n" .
4643                               "<author>\n" .
4644                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4645                         if ($co{'author_email'}) {
4646                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4647                         }
4648                         print "</author>\n" .
4649                               # use committer for contributor
4650                               "<contributor>\n" .
4651                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4652                         if ($co{'committer_email'}) {
4653                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4654                         }
4655                         print "</contributor>\n" .
4656                               "<published>$cd{'iso-8601'}</published>\n" .
4657                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4658                               "<id>$co_url</id>\n" .
4659                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4660                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4661                 }
4662                 my $comment = $co{'comment'};
4663                 print "<pre>\n";
4664                 foreach my $line (@$comment) {
4665                         $line = esc_html($line);
4666                         print "$line\n";
4667                 }
4668                 print "</pre><ul>\n";
4669                 foreach my $difftree_line (@difftree) {
4670                         my %difftree = parse_difftree_raw_line($difftree_line);
4671                         next if !$difftree{'from_id'};
4672
4673                         my $file = $difftree{'file'} || $difftree{'to_file'};
4674
4675                         print "<li>" .
4676                               "[" .
4677                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4678                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4679                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4680                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4681                                       -title => "diff"}, 'D');
4682                         if ($have_blame) {
4683                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4684                                                              file_name=>$file, hash_base=>$commit),
4685                                               -title => "blame"}, 'B');
4686                         }
4687                         # if this is not a feed of a file history
4688                         if (!defined $file_name || $file_name ne $file) {
4689                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4690                                                              file_name=>$file, hash=>$commit),
4691                                               -title => "history"}, 'H');
4692                         }
4693                         $file = esc_path($file);
4694                         print "] ".
4695                               "$file</li>\n";
4696                 }
4697                 if ($format eq 'rss') {
4698                         print "</ul>]]>\n" .
4699                               "</content:encoded>\n" .
4700                               "</item>\n";
4701                 } elsif ($format eq 'atom') {
4702                         print "</ul>\n</div>\n" .
4703                               "</content>\n" .
4704                               "</entry>\n";
4705                 }
4706         }
4707
4708         # end of feed
4709         if ($format eq 'rss') {
4710                 print "</channel>\n</rss>\n";
4711         }       elsif ($format eq 'atom') {
4712                 print "</feed>\n";
4713         }
4714 }
4715
4716 sub git_rss {
4717         git_feed('rss');
4718 }
4719
4720 sub git_atom {
4721         git_feed('atom');
4722 }
4723
4724 sub git_opml {
4725         my @list = git_get_projects_list();
4726
4727         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4728         print <<XML;
4729 <?xml version="1.0" encoding="utf-8"?>
4730 <opml version="1.0">
4731 <head>
4732   <title>$site_name OPML Export</title>
4733 </head>
4734 <body>
4735 <outline text="git RSS feeds">
4736 XML
4737
4738         foreach my $pr (@list) {
4739                 my %proj = %$pr;
4740                 my $head = git_get_head_hash($proj{'path'});
4741                 if (!defined $head) {
4742                         next;
4743                 }
4744                 $git_dir = "$projectroot/$proj{'path'}";
4745                 my %co = parse_commit($head);
4746                 if (!%co) {
4747                         next;
4748                 }
4749
4750                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4751                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4752                 my $html = "$my_url?p=$proj{'path'};a=summary";
4753                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4754         }
4755         print <<XML;
4756 </outline>
4757 </body>
4758 </opml>
4759 XML
4760 }