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($7);
1496                 }
1497         }
1498         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1499         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1500                 $res{'commit'} = $1;
1501         }
1502
1503         return wantarray ? %res : \%res;
1504 }
1505
1506 # parse line of git-ls-tree output
1507 sub parse_ls_tree_line ($;%) {
1508         my $line = shift;
1509         my %opts = @_;
1510         my %res;
1511
1512         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1513         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
1514
1515         $res{'mode'} = $1;
1516         $res{'type'} = $2;
1517         $res{'hash'} = $3;
1518         if ($opts{'-z'}) {
1519                 $res{'name'} = $4;
1520         } else {
1521                 $res{'name'} = unquote($4);
1522         }
1523
1524         return wantarray ? %res : \%res;
1525 }
1526
1527 ## ......................................................................
1528 ## parse to array of hashes functions
1529
1530 sub git_get_heads_list {
1531         my $limit = shift;
1532         my @headslist;
1533
1534         open my $fd, '-|', git_cmd(), 'for-each-ref',
1535                 ($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
1536                 '--format=%(objectname) %(refname) %(subject)%00%(committer)',
1537                 'refs/heads'
1538                 or return;
1539         while (my $line = <$fd>) {
1540                 my %ref_item;
1541
1542                 chomp $line;
1543                 my ($refinfo, $committerinfo) = split(/\0/, $line);
1544                 my ($hash, $name, $title) = split(' ', $refinfo, 3);
1545                 my ($committer, $epoch, $tz) =
1546                         ($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
1547                 $name =~ s!^refs/heads/!!;
1548
1549                 $ref_item{'name'}  = $name;
1550                 $ref_item{'id'}    = $hash;
1551                 $ref_item{'title'} = $title || '(no commit message)';
1552                 $ref_item{'epoch'} = $epoch;
1553                 if ($epoch) {
1554                         $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1555                 } else {
1556                         $ref_item{'age'} = "unknown";
1557                 }
1558
1559                 push @headslist, \%ref_item;
1560         }
1561         close $fd;
1562
1563         return wantarray ? @headslist : \@headslist;
1564 }
1565
1566 sub git_get_tags_list {
1567         my $limit = shift;
1568         my @tagslist;
1569
1570         open my $fd, '-|', git_cmd(), 'for-each-ref',
1571                 ($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
1572                 '--format=%(objectname) %(objecttype) %(refname) '.
1573                 '%(*objectname) %(*objecttype) %(subject)%00%(creator)',
1574                 'refs/tags'
1575                 or return;
1576         while (my $line = <$fd>) {
1577                 my %ref_item;
1578
1579                 chomp $line;
1580                 my ($refinfo, $creatorinfo) = split(/\0/, $line);
1581                 my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
1582                 my ($creator, $epoch, $tz) =
1583                         ($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
1584                 $name =~ s!^refs/tags/!!;
1585
1586                 $ref_item{'type'} = $type;
1587                 $ref_item{'id'} = $id;
1588                 $ref_item{'name'} = $name;
1589                 if ($type eq "tag") {
1590                         $ref_item{'subject'} = $title;
1591                         $ref_item{'reftype'} = $reftype;
1592                         $ref_item{'refid'}   = $refid;
1593                 } else {
1594                         $ref_item{'reftype'} = $type;
1595                         $ref_item{'refid'}   = $id;
1596                 }
1597
1598                 if ($type eq "tag" || $type eq "commit") {
1599                         $ref_item{'epoch'} = $epoch;
1600                         if ($epoch) {
1601                                 $ref_item{'age'} = age_string(time - $ref_item{'epoch'});
1602                         } else {
1603                                 $ref_item{'age'} = "unknown";
1604                         }
1605                 }
1606
1607                 push @tagslist, \%ref_item;
1608         }
1609         close $fd;
1610
1611         return wantarray ? @tagslist : \@tagslist;
1612 }
1613
1614 ## ----------------------------------------------------------------------
1615 ## filesystem-related functions
1616
1617 sub get_file_owner {
1618         my $path = shift;
1619
1620         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1621         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1622         if (!defined $gcos) {
1623                 return undef;
1624         }
1625         my $owner = $gcos;
1626         $owner =~ s/[,;].*$//;
1627         return decode_utf8($owner);
1628 }
1629
1630 ## ......................................................................
1631 ## mimetype related functions
1632
1633 sub mimetype_guess_file {
1634         my $filename = shift;
1635         my $mimemap = shift;
1636         -r $mimemap or return undef;
1637
1638         my %mimemap;
1639         open(MIME, $mimemap) or return undef;
1640         while (<MIME>) {
1641                 next if m/^#/; # skip comments
1642                 my ($mime, $exts) = split(/\t+/);
1643                 if (defined $exts) {
1644                         my @exts = split(/\s+/, $exts);
1645                         foreach my $ext (@exts) {
1646                                 $mimemap{$ext} = $mime;
1647                         }
1648                 }
1649         }
1650         close(MIME);
1651
1652         $filename =~ /\.([^.]*)$/;
1653         return $mimemap{$1};
1654 }
1655
1656 sub mimetype_guess {
1657         my $filename = shift;
1658         my $mime;
1659         $filename =~ /\./ or return undef;
1660
1661         if ($mimetypes_file) {
1662                 my $file = $mimetypes_file;
1663                 if ($file !~ m!^/!) { # if it is relative path
1664                         # it is relative to project
1665                         $file = "$projectroot/$project/$file";
1666                 }
1667                 $mime = mimetype_guess_file($filename, $file);
1668         }
1669         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1670         return $mime;
1671 }
1672
1673 sub blob_mimetype {
1674         my $fd = shift;
1675         my $filename = shift;
1676
1677         if ($filename) {
1678                 my $mime = mimetype_guess($filename);
1679                 $mime and return $mime;
1680         }
1681
1682         # just in case
1683         return $default_blob_plain_mimetype unless $fd;
1684
1685         if (-T $fd) {
1686                 return 'text/plain' .
1687                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1688         } elsif (! $filename) {
1689                 return 'application/octet-stream';
1690         } elsif ($filename =~ m/\.png$/i) {
1691                 return 'image/png';
1692         } elsif ($filename =~ m/\.gif$/i) {
1693                 return 'image/gif';
1694         } elsif ($filename =~ m/\.jpe?g$/i) {
1695                 return 'image/jpeg';
1696         } else {
1697                 return 'application/octet-stream';
1698         }
1699 }
1700
1701 ## ======================================================================
1702 ## functions printing HTML: header, footer, error page
1703
1704 sub git_header_html {
1705         my $status = shift || "200 OK";
1706         my $expires = shift;
1707
1708         my $title = "$site_name";
1709         if (defined $project) {
1710                 $title .= " - " . decode_utf8($project);
1711                 if (defined $action) {
1712                         $title .= "/$action";
1713                         if (defined $file_name) {
1714                                 $title .= " - " . esc_path($file_name);
1715                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1716                                         $title .= "/";
1717                                 }
1718                         }
1719                 }
1720         }
1721         my $content_type;
1722         # require explicit support from the UA if we are to send the page as
1723         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1724         # we have to do this because MSIE sometimes globs '*/*', pretending to
1725         # support xhtml+xml but choking when it gets what it asked for.
1726         if (defined $cgi->http('HTTP_ACCEPT') &&
1727             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1728             $cgi->Accept('application/xhtml+xml') != 0) {
1729                 $content_type = 'application/xhtml+xml';
1730         } else {
1731                 $content_type = 'text/html';
1732         }
1733         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1734                            -status=> $status, -expires => $expires);
1735         my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
1736         print <<EOF;
1737 <?xml version="1.0" encoding="utf-8"?>
1738 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1739 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1740 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1741 <!-- git core binaries version $git_version -->
1742 <head>
1743 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1744 <meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
1745 <meta name="robots" content="index, nofollow"/>
1746 <title>$title</title>
1747 EOF
1748 # print out each stylesheet that exist
1749         if (defined $stylesheet) {
1750 #provides backwards capability for those people who define style sheet in a config file
1751                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1752         } else {
1753                 foreach my $stylesheet (@stylesheets) {
1754                         next unless $stylesheet;
1755                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1756                 }
1757         }
1758         if (defined $project) {
1759                 printf('<link rel="alternate" title="%s log RSS feed" '.
1760                        'href="%s" type="application/rss+xml" />'."\n",
1761                        esc_param($project), href(action=>"rss"));
1762                 printf('<link rel="alternate" title="%s log Atom feed" '.
1763                        'href="%s" type="application/atom+xml" />'."\n",
1764                        esc_param($project), href(action=>"atom"));
1765         } else {
1766                 printf('<link rel="alternate" title="%s projects list" '.
1767                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1768                        $site_name, href(project=>undef, action=>"project_index"));
1769                 printf('<link rel="alternate" title="%s projects feeds" '.
1770                        'href="%s" type="text/x-opml"/>'."\n",
1771                        $site_name, href(project=>undef, action=>"opml"));
1772         }
1773         if (defined $favicon) {
1774                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1775         }
1776
1777         print "</head>\n" .
1778               "<body>\n";
1779
1780         if (-f $site_header) {
1781                 open (my $fd, $site_header);
1782                 print <$fd>;
1783                 close $fd;
1784         }
1785
1786         print "<div class=\"page_header\">\n" .
1787               $cgi->a({-href => esc_url($logo_url),
1788                        -title => $logo_label},
1789                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1790         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1791         if (defined $project) {
1792                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1793                 if (defined $action) {
1794                         print " / $action";
1795                 }
1796                 print "\n";
1797         }
1798         my ($have_search) = gitweb_check_feature('search');
1799         if ((defined $project) && ($have_search)) {
1800                 if (!defined $searchtext) {
1801                         $searchtext = "";
1802                 }
1803                 my $search_hash;
1804                 if (defined $hash_base) {
1805                         $search_hash = $hash_base;
1806                 } elsif (defined $hash) {
1807                         $search_hash = $hash;
1808                 } else {
1809                         $search_hash = "HEAD";
1810                 }
1811                 $cgi->param("a", "search");
1812                 $cgi->param("h", $search_hash);
1813                 $cgi->param("p", $project);
1814                 print $cgi->startform(-method => "get", -action => $my_uri) .
1815                       "<div class=\"search\">\n" .
1816                       $cgi->hidden(-name => "p") . "\n" .
1817                       $cgi->hidden(-name => "a") . "\n" .
1818                       $cgi->hidden(-name => "h") . "\n" .
1819                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1820                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1821                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1822                       " search:\n",
1823                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1824                       "</div>" .
1825                       $cgi->end_form() . "\n";
1826         }
1827         print "</div>\n";
1828 }
1829
1830 sub git_footer_html {
1831         print "<div class=\"page_footer\">\n";
1832         if (defined $project) {
1833                 my $descr = git_get_project_description($project);
1834                 if (defined $descr) {
1835                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1836                 }
1837                 print $cgi->a({-href => href(action=>"rss"),
1838                               -class => "rss_logo"}, "RSS") . " ";
1839                 print $cgi->a({-href => href(action=>"atom"),
1840                               -class => "rss_logo"}, "Atom") . "\n";
1841         } else {
1842                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1843                               -class => "rss_logo"}, "OPML") . " ";
1844                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1845                               -class => "rss_logo"}, "TXT") . "\n";
1846         }
1847         print "</div>\n" ;
1848
1849         if (-f $site_footer) {
1850                 open (my $fd, $site_footer);
1851                 print <$fd>;
1852                 close $fd;
1853         }
1854
1855         print "</body>\n" .
1856               "</html>";
1857 }
1858
1859 sub die_error {
1860         my $status = shift || "403 Forbidden";
1861         my $error = shift || "Malformed query, file missing or permission denied";
1862
1863         git_header_html($status);
1864         print <<EOF;
1865 <div class="page_body">
1866 <br /><br />
1867 $status - $error
1868 <br />
1869 </div>
1870 EOF
1871         git_footer_html();
1872         exit;
1873 }
1874
1875 ## ----------------------------------------------------------------------
1876 ## functions printing or outputting HTML: navigation
1877
1878 sub git_print_page_nav {
1879         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1880         $extra = '' if !defined $extra; # pager or formats
1881
1882         my @navs = qw(summary shortlog log commit commitdiff tree);
1883         if ($suppress) {
1884                 @navs = grep { $_ ne $suppress } @navs;
1885         }
1886
1887         my %arg = map { $_ => {action=>$_} } @navs;
1888         if (defined $head) {
1889                 for (qw(commit commitdiff)) {
1890                         $arg{$_}{'hash'} = $head;
1891                 }
1892                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1893                         for (qw(shortlog log)) {
1894                                 $arg{$_}{'hash'} = $head;
1895                         }
1896                 }
1897         }
1898         $arg{'tree'}{'hash'} = $treehead if defined $treehead;
1899         $arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
1900
1901         print "<div class=\"page_nav\">\n" .
1902                 (join " | ",
1903                  map { $_ eq $current ?
1904                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1905                  } @navs);
1906         print "<br/>\n$extra<br/>\n" .
1907               "</div>\n";
1908 }
1909
1910 sub format_paging_nav {
1911         my ($action, $hash, $head, $page, $nrevs) = @_;
1912         my $paging_nav;
1913
1914
1915         if ($hash ne $head || $page) {
1916                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1917         } else {
1918                 $paging_nav .= "HEAD";
1919         }
1920
1921         if ($page > 0) {
1922                 $paging_nav .= " &sdot; " .
1923                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1924                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1925         } else {
1926                 $paging_nav .= " &sdot; prev";
1927         }
1928
1929         if ($nrevs >= (100 * ($page+1)-1)) {
1930                 $paging_nav .= " &sdot; " .
1931                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1932                                  -accesskey => "n", -title => "Alt-n"}, "next");
1933         } else {
1934                 $paging_nav .= " &sdot; next";
1935         }
1936
1937         return $paging_nav;
1938 }
1939
1940 ## ......................................................................
1941 ## functions printing or outputting HTML: div
1942
1943 sub git_print_header_div {
1944         my ($action, $title, $hash, $hash_base) = @_;
1945         my %args = ();
1946
1947         $args{'action'} = $action;
1948         $args{'hash'} = $hash if $hash;
1949         $args{'hash_base'} = $hash_base if $hash_base;
1950
1951         print "<div class=\"header\">\n" .
1952               $cgi->a({-href => href(%args), -class => "title"},
1953               $title ? $title : $action) .
1954               "\n</div>\n";
1955 }
1956
1957 #sub git_print_authorship (\%) {
1958 sub git_print_authorship {
1959         my $co = shift;
1960
1961         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1962         print "<div class=\"author_date\">" .
1963               esc_html($co->{'author_name'}) .
1964               " [$ad{'rfc2822'}";
1965         if ($ad{'hour_local'} < 6) {
1966                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1967                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1968         } else {
1969                 printf(" (%02d:%02d %s)",
1970                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1971         }
1972         print "]</div>\n";
1973 }
1974
1975 sub git_print_page_path {
1976         my $name = shift;
1977         my $type = shift;
1978         my $hb = shift;
1979
1980
1981         print "<div class=\"page_path\">";
1982         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1983                       -title => 'tree root'}, decode_utf8("[$project]"));
1984         print " / ";
1985         if (defined $name) {
1986                 my @dirname = split '/', $name;
1987                 my $basename = pop @dirname;
1988                 my $fullname = '';
1989
1990                 foreach my $dir (@dirname) {
1991                         $fullname .= ($fullname ? '/' : '') . $dir;
1992                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1993                                                      hash_base=>$hb),
1994                                       -title => $fullname}, esc_path($dir));
1995                         print " / ";
1996                 }
1997                 if (defined $type && $type eq 'blob') {
1998                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1999                                                      hash_base=>$hb),
2000                                       -title => $name}, esc_path($basename));
2001                 } elsif (defined $type && $type eq 'tree') {
2002                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2003                                                      hash_base=>$hb),
2004                                       -title => $name}, esc_path($basename));
2005                         print " / ";
2006                 } else {
2007                         print esc_path($basename);
2008                 }
2009         }
2010         print "<br/></div>\n";
2011 }
2012
2013 # sub git_print_log (\@;%) {
2014 sub git_print_log ($;%) {
2015         my $log = shift;
2016         my %opts = @_;
2017
2018         if ($opts{'-remove_title'}) {
2019                 # remove title, i.e. first line of log
2020                 shift @$log;
2021         }
2022         # remove leading empty lines
2023         while (defined $log->[0] && $log->[0] eq "") {
2024                 shift @$log;
2025         }
2026
2027         # print log
2028         my $signoff = 0;
2029         my $empty = 0;
2030         foreach my $line (@$log) {
2031                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2032                         $signoff = 1;
2033                         $empty = 0;
2034                         if (! $opts{'-remove_signoff'}) {
2035                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2036                                 next;
2037                         } else {
2038                                 # remove signoff lines
2039                                 next;
2040                         }
2041                 } else {
2042                         $signoff = 0;
2043                 }
2044
2045                 # print only one empty line
2046                 # do not print empty line after signoff
2047                 if ($line eq "") {
2048                         next if ($empty || $signoff);
2049                         $empty = 1;
2050                 } else {
2051                         $empty = 0;
2052                 }
2053
2054                 print format_log_line_html($line) . "<br/>\n";
2055         }
2056
2057         if ($opts{'-final_empty_line'}) {
2058                 # end with single empty line
2059                 print "<br/>\n" unless $empty;
2060         }
2061 }
2062
2063 # return link target (what link points to)
2064 sub git_get_link_target {
2065         my $hash = shift;
2066         my $link_target;
2067
2068         # read link
2069         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2070                 or return;
2071         {
2072                 local $/;
2073                 $link_target = <$fd>;
2074         }
2075         close $fd
2076                 or return;
2077
2078         return $link_target;
2079 }
2080
2081 # given link target, and the directory (basedir) the link is in,
2082 # return target of link relative to top directory (top tree);
2083 # return undef if it is not possible (including absolute links).
2084 sub normalize_link_target {
2085         my ($link_target, $basedir, $hash_base) = @_;
2086
2087         # we can normalize symlink target only if $hash_base is provided
2088         return unless $hash_base;
2089
2090         # absolute symlinks (beginning with '/') cannot be normalized
2091         return if (substr($link_target, 0, 1) eq '/');
2092
2093         # normalize link target to path from top (root) tree (dir)
2094         my $path;
2095         if ($basedir) {
2096                 $path = $basedir . '/' . $link_target;
2097         } else {
2098                 # we are in top (root) tree (dir)
2099                 $path = $link_target;
2100         }
2101
2102         # remove //, /./, and /../
2103         my @path_parts;
2104         foreach my $part (split('/', $path)) {
2105                 # discard '.' and ''
2106                 next if (!$part || $part eq '.');
2107                 # handle '..'
2108                 if ($part eq '..') {
2109                         if (@path_parts) {
2110                                 pop @path_parts;
2111                         } else {
2112                                 # link leads outside repository (outside top dir)
2113                                 return;
2114                         }
2115                 } else {
2116                         push @path_parts, $part;
2117                 }
2118         }
2119         $path = join('/', @path_parts);
2120
2121         return $path;
2122 }
2123
2124 # print tree entry (row of git_tree), but without encompassing <tr> element
2125 sub git_print_tree_entry {
2126         my ($t, $basedir, $hash_base, $have_blame) = @_;
2127
2128         my %base_key = ();
2129         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2130
2131         # The format of a table row is: mode list link.  Where mode is
2132         # the mode of the entry, list is the name of the entry, an href,
2133         # and link is the action links of the entry.
2134
2135         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2136         if ($t->{'type'} eq "blob") {
2137                 print "<td class=\"list\">" .
2138                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2139                                                file_name=>"$basedir$t->{'name'}", %base_key),
2140                                 -class => "list"}, esc_path($t->{'name'}));
2141                 if (S_ISLNK(oct $t->{'mode'})) {
2142                         my $link_target = git_get_link_target($t->{'hash'});
2143                         if ($link_target) {
2144                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2145                                 if (defined $norm_target) {
2146                                         print " -> " .
2147                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2148                                                                      file_name=>$norm_target),
2149                                                        -title => $norm_target}, esc_path($link_target));
2150                                 } else {
2151                                         print " -> " . esc_path($link_target);
2152                                 }
2153                         }
2154                 }
2155                 print "</td>\n";
2156                 print "<td class=\"link\">";
2157                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2158                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2159                               "blob");
2160                 if ($have_blame) {
2161                         print " | " .
2162                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2163                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2164                                       "blame");
2165                 }
2166                 if (defined $hash_base) {
2167                         print " | " .
2168                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2169                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2170                                       "history");
2171                 }
2172                 print " | " .
2173                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2174                                                file_name=>"$basedir$t->{'name'}")},
2175                                 "raw");
2176                 print "</td>\n";
2177
2178         } elsif ($t->{'type'} eq "tree") {
2179                 print "<td class=\"list\">";
2180                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2181                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2182                               esc_path($t->{'name'}));
2183                 print "</td>\n";
2184                 print "<td class=\"link\">";
2185                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2186                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2187                               "tree");
2188                 if (defined $hash_base) {
2189                         print " | " .
2190                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2191                                                      file_name=>"$basedir$t->{'name'}")},
2192                                       "history");
2193                 }
2194                 print "</td>\n";
2195         }
2196 }
2197
2198 ## ......................................................................
2199 ## functions printing large fragments of HTML
2200
2201 sub git_difftree_body {
2202         my ($difftree, $hash, $parent) = @_;
2203         my ($have_blame) = gitweb_check_feature('blame');
2204         print "<div class=\"list_head\">\n";
2205         if ($#{$difftree} > 10) {
2206                 print(($#{$difftree} + 1) . " files changed:\n");
2207         }
2208         print "</div>\n";
2209
2210         print "<table class=\"diff_tree\">\n";
2211         my $alternate = 1;
2212         my $patchno = 0;
2213         foreach my $line (@{$difftree}) {
2214                 my %diff = parse_difftree_raw_line($line);
2215
2216                 if ($alternate) {
2217                         print "<tr class=\"dark\">\n";
2218                 } else {
2219                         print "<tr class=\"light\">\n";
2220                 }
2221                 $alternate ^= 1;
2222
2223                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2224                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2225                 if ($diff{'to_mode'} ne ('0' x 6)) {
2226                         $to_mode_oct = oct $diff{'to_mode'};
2227                         if (S_ISREG($to_mode_oct)) { # only for regular file
2228                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2229                         }
2230                         $to_file_type = file_type($diff{'to_mode'});
2231                 }
2232                 if ($diff{'from_mode'} ne ('0' x 6)) {
2233                         $from_mode_oct = oct $diff{'from_mode'};
2234                         if (S_ISREG($to_mode_oct)) { # only for regular file
2235                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2236                         }
2237                         $from_file_type = file_type($diff{'from_mode'});
2238                 }
2239
2240                 if ($diff{'status'} eq "A") { # created
2241                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2242                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2243                         $mode_chng   .= "]</span>";
2244                         print "<td>";
2245                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2246                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2247                                       -class => "list"}, esc_path($diff{'file'}));
2248                         print "</td>\n";
2249                         print "<td>$mode_chng</td>\n";
2250                         print "<td class=\"link\">";
2251                         if ($action eq 'commitdiff') {
2252                                 # link to patch
2253                                 $patchno++;
2254                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2255                                 print " | ";
2256                         }
2257                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2258                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2259                                       "blob");
2260                         print "</td>\n";
2261
2262                 } elsif ($diff{'status'} eq "D") { # deleted
2263                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2264                         print "<td>";
2265                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2266                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2267                                        -class => "list"}, esc_path($diff{'file'}));
2268                         print "</td>\n";
2269                         print "<td>$mode_chng</td>\n";
2270                         print "<td class=\"link\">";
2271                         if ($action eq 'commitdiff') {
2272                                 # link to patch
2273                                 $patchno++;
2274                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2275                                 print " | ";
2276                         }
2277                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2278                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2279                                       "blob") . " | ";
2280                         if ($have_blame) {
2281                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2282                                                              file_name=>$diff{'file'})},
2283                                               "blame") . " | ";
2284                         }
2285                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2286                                                      file_name=>$diff{'file'})},
2287                                       "history");
2288                         print "</td>\n";
2289
2290                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2291                         my $mode_chnge = "";
2292                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2293                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2294                                 if ($from_file_type ne $to_file_type) {
2295                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2296                                 }
2297                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2298                                         if ($from_mode_str && $to_mode_str) {
2299                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2300                                         } elsif ($to_mode_str) {
2301                                                 $mode_chnge .= " mode: $to_mode_str";
2302                                         }
2303                                 }
2304                                 $mode_chnge .= "]</span>\n";
2305                         }
2306                         print "<td>";
2307                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2308                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2309                                       -class => "list"}, esc_path($diff{'file'}));
2310                         print "</td>\n";
2311                         print "<td>$mode_chnge</td>\n";
2312                         print "<td class=\"link\">";
2313                         if ($action eq 'commitdiff') {
2314                                 # link to patch
2315                                 $patchno++;
2316                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2317                                       " | ";
2318                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2319                                 # "commit" view and modified file (not onlu mode changed)
2320                                 print $cgi->a({-href => href(action=>"blobdiff",
2321                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2322                                                              hash_base=>$hash, hash_parent_base=>$parent,
2323                                                              file_name=>$diff{'file'})},
2324                                               "diff") .
2325                                       " | ";
2326                         }
2327                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2328                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2329                                        "blob") . " | ";
2330                         if ($have_blame) {
2331                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2332                                                              file_name=>$diff{'file'})},
2333                                               "blame") . " | ";
2334                         }
2335                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2336                                                      file_name=>$diff{'file'})},
2337                                       "history");
2338                         print "</td>\n";
2339
2340                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2341                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2342                         my $nstatus = $status_name{$diff{'status'}};
2343                         my $mode_chng = "";
2344                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2345                                 # mode also for directories, so we cannot use $to_mode_str
2346                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2347                         }
2348                         print "<td>" .
2349                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2350                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2351                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2352                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2353                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2354                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2355                                       -class => "list"}, esc_path($diff{'from_file'})) .
2356                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2357                               "<td class=\"link\">";
2358                         if ($action eq 'commitdiff') {
2359                                 # link to patch
2360                                 $patchno++;
2361                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2362                                       " | ";
2363                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2364                                 # "commit" view and modified file (not only pure rename or copy)
2365                                 print $cgi->a({-href => href(action=>"blobdiff",
2366                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2367                                                              hash_base=>$hash, hash_parent_base=>$parent,
2368                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2369                                               "diff") .
2370                                       " | ";
2371                         }
2372                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2373                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2374                                       "blob") . " | ";
2375                         if ($have_blame) {
2376                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2377                                                              file_name=>$diff{'to_file'})},
2378                                               "blame") . " | ";
2379                         }
2380                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2381                                                     file_name=>$diff{'to_file'})},
2382                                       "history");
2383                         print "</td>\n";
2384
2385                 } # we should not encounter Unmerged (U) or Unknown (X) status
2386                 print "</tr>\n";
2387         }
2388         print "</table>\n";
2389 }
2390
2391 sub git_patchset_body {
2392         my ($fd, $difftree, $hash, $hash_parent) = @_;
2393
2394         my $patch_idx = 0;
2395         my $patch_number = 0;
2396         my $patch_line;
2397         my $diffinfo;
2398         my (%from, %to);
2399
2400         print "<div class=\"patchset\">\n";
2401
2402         # skip to first patch
2403         while ($patch_line = <$fd>) {
2404                 chomp $patch_line;
2405
2406                 last if ($patch_line =~ m/^diff /);
2407         }
2408
2409  PATCH:
2410         while ($patch_line) {
2411                 my @diff_header;
2412                 my ($from_id, $to_id);
2413
2414                 # git diff header
2415                 #assert($patch_line =~ m/^diff /) if DEBUG;
2416                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2417                 $patch_number++;
2418                 push @diff_header, $patch_line;
2419
2420                 # extended diff header
2421         EXTENDED_HEADER:
2422                 while ($patch_line = <$fd>) {
2423                         chomp $patch_line;
2424
2425                         last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
2426
2427                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2428                                 $from_id = $1;
2429                                 $to_id   = $2;
2430                         }
2431
2432                         push @diff_header, $patch_line;
2433                 }
2434                 my $last_patch_line = $patch_line;
2435
2436                 # check if current patch belong to current raw line
2437                 # and parse raw git-diff line if needed
2438                 if (defined $diffinfo &&
2439                     $diffinfo->{'from_id'} eq $from_id &&
2440                     $diffinfo->{'to_id'}   eq $to_id) {
2441                         # this is split patch
2442                         print "<div class=\"patch cont\">\n";
2443                 } else {
2444                         # advance raw git-diff output if needed
2445                         $patch_idx++ if defined $diffinfo;
2446
2447                         # read and prepare patch information
2448                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2449                                 # pre-parsed (or generated by hand)
2450                                 $diffinfo = $difftree->[$patch_idx];
2451                         } else {
2452                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2453                         }
2454                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2455                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2456                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2457                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2458                                                      hash=>$diffinfo->{'from_id'},
2459                                                      file_name=>$from{'file'});
2460                         } else {
2461                                 delete $from{'href'};
2462                         }
2463                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2464                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2465                                                    hash=>$diffinfo->{'to_id'},
2466                                                    file_name=>$to{'file'});
2467                         } else {
2468                                 delete $to{'href'};
2469                         }
2470                         # this is first patch for raw difftree line with $patch_idx index
2471                         # we index @$difftree array from 0, but number patches from 1
2472                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2473                 }
2474
2475                 # print "git diff" header
2476                 $patch_line = shift @diff_header;
2477                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2478                 if ($from{'href'}) {
2479                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2480                                                'a/' . esc_path($from{'file'}));
2481                 } else { # file was added
2482                         $patch_line .= 'a/' . esc_path($from{'file'});
2483                 }
2484                 $patch_line .= ' ';
2485                 if ($to{'href'}) {
2486                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2487                                                'b/' . esc_path($to{'file'}));
2488                 } else { # file was deleted
2489                         $patch_line .= 'b/' . esc_path($to{'file'});
2490                 }
2491                 print "<div class=\"diff header\">$patch_line</div>\n";
2492
2493                 # print extended diff header
2494                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2495         EXTENDED_HEADER:
2496                 foreach $patch_line (@diff_header) {
2497                         # match <path>
2498                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2499                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2500                                                        esc_path($from{'file'}));
2501                         }
2502                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2503                                 $patch_line .= $cgi->a({-href=>$to{'href'}, -class=>"path"},
2504                                                        esc_path($to{'file'}));
2505                         }
2506                         # match <mode>
2507                         if ($patch_line =~ m/\s(\d{6})$/) {
2508                                 $patch_line .= '<span class="info"> (' .
2509                                                file_type_long($1) .
2510                                                ')</span>';
2511                         }
2512                         # match <hash>
2513                         if ($patch_line =~ m/^index/) {
2514                                 my ($from_link, $to_link);
2515                                 if ($from{'href'}) {
2516                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2517                                                              substr($diffinfo->{'from_id'},0,7));
2518                                 } else {
2519                                         $from_link = '0' x 7;
2520                                 }
2521                                 if ($to{'href'}) {
2522                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2523                                                            substr($diffinfo->{'to_id'},0,7));
2524                                 } else {
2525                                         $to_link = '0' x 7;
2526                                 }
2527                                 #affirm {
2528                                 #       my ($from_hash, $to_hash) =
2529                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2530                                 #       my ($from_id, $to_id) =
2531                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2532                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2533                                 #} if DEBUG;
2534                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2535                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2536                         }
2537                         print $patch_line . "<br/>\n";
2538                 }
2539                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2540
2541                 # from-file/to-file diff header
2542                 $patch_line = $last_patch_line;
2543                 if (! $patch_line) {
2544                         print "</div>\n"; # class="patch"
2545                         last PATCH;
2546                 }
2547                 next PATCH if ($patch_line =~ m/^diff /);
2548                 #assert($patch_line =~ m/^---/) if DEBUG;
2549                 if ($from{'href'} && $patch_line =~ m!^--- "?a/!) {
2550                         $patch_line = '--- a/' .
2551                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2552                                               esc_path($from{'file'}));
2553                 }
2554                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2555
2556                 $patch_line = <$fd>;
2557                 chomp $patch_line;
2558
2559                 #assert($patch_line =~ m/^+++/) if DEBUG;
2560                 if ($to{'href'} && $patch_line =~ m!^\+\+\+ "?b/!) {
2561                         $patch_line = '+++ b/' .
2562                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2563                                               esc_path($to{'file'}));
2564                 }
2565                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2566
2567                 # the patch itself
2568         LINE:
2569                 while ($patch_line = <$fd>) {
2570                         chomp $patch_line;
2571
2572                         next PATCH if ($patch_line =~ m/^diff /);
2573
2574                         print format_diff_line($patch_line, \%from, \%to);
2575                 }
2576
2577         } continue {
2578                 print "</div>\n"; # class="patch"
2579         }
2580         print "<div class=\"diff nodifferences\">No differences found</div>\n" if (!$patch_number);
2581
2582         print "</div>\n"; # class="patchset"
2583 }
2584
2585 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2586
2587 sub git_project_list_body {
2588         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2589
2590         my ($check_forks) = gitweb_check_feature('forks');
2591
2592         my @projects;
2593         foreach my $pr (@$projlist) {
2594                 my (@aa) = git_get_last_activity($pr->{'path'});
2595                 unless (@aa) {
2596                         next;
2597                 }
2598                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2599                 if (!defined $pr->{'descr'}) {
2600                         my $descr = git_get_project_description($pr->{'path'}) || "";
2601                         $pr->{'descr_long'} = decode_utf8($descr);
2602                         $pr->{'descr'} = chop_str($descr, 25, 5);
2603                 }
2604                 if (!defined $pr->{'owner'}) {
2605                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2606                 }
2607                 if ($check_forks) {
2608                         my $pname = $pr->{'path'};
2609                         if (($pname =~ s/\.git$//) &&
2610                             ($pname !~ /\/$/) &&
2611                             (-d "$projectroot/$pname")) {
2612                                 $pr->{'forks'} = "-d $projectroot/$pname";
2613                         }
2614                         else {
2615                                 $pr->{'forks'} = 0;
2616                         }
2617                 }
2618                 push @projects, $pr;
2619         }
2620
2621         $order ||= $default_projects_order;
2622         $from = 0 unless defined $from;
2623         $to = $#projects if (!defined $to || $#projects < $to);
2624
2625         print "<table class=\"project_list\">\n";
2626         unless ($no_header) {
2627                 print "<tr>\n";
2628                 if ($check_forks) {
2629                         print "<th></th>\n";
2630                 }
2631                 if ($order eq "project") {
2632                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2633                         print "<th>Project</th>\n";
2634                 } else {
2635                         print "<th>" .
2636                               $cgi->a({-href => href(project=>undef, order=>'project'),
2637                                        -class => "header"}, "Project") .
2638                               "</th>\n";
2639                 }
2640                 if ($order eq "descr") {
2641                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2642                         print "<th>Description</th>\n";
2643                 } else {
2644                         print "<th>" .
2645                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2646                                        -class => "header"}, "Description") .
2647                               "</th>\n";
2648                 }
2649                 if ($order eq "owner") {
2650                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2651                         print "<th>Owner</th>\n";
2652                 } else {
2653                         print "<th>" .
2654                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2655                                        -class => "header"}, "Owner") .
2656                               "</th>\n";
2657                 }
2658                 if ($order eq "age") {
2659                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2660                         print "<th>Last Change</th>\n";
2661                 } else {
2662                         print "<th>" .
2663                               $cgi->a({-href => href(project=>undef, order=>'age'),
2664                                        -class => "header"}, "Last Change") .
2665                               "</th>\n";
2666                 }
2667                 print "<th></th>\n" .
2668                       "</tr>\n";
2669         }
2670         my $alternate = 1;
2671         for (my $i = $from; $i <= $to; $i++) {
2672                 my $pr = $projects[$i];
2673                 if ($alternate) {
2674                         print "<tr class=\"dark\">\n";
2675                 } else {
2676                         print "<tr class=\"light\">\n";
2677                 }
2678                 $alternate ^= 1;
2679                 if ($check_forks) {
2680                         print "<td>";
2681                         if ($pr->{'forks'}) {
2682                                 print "<!-- $pr->{'forks'} -->\n";
2683                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2684                         }
2685                         print "</td>\n";
2686                 }
2687                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2688                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2689                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2690                                         -class => "list", -title => $pr->{'descr_long'}},
2691                                         esc_html($pr->{'descr'})) . "</td>\n" .
2692                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2693                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2694                       $pr->{'age_string'} . "</td>\n" .
2695                       "<td class=\"link\">" .
2696                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2697                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2698                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2699                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2700                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2701                       "</td>\n" .
2702                       "</tr>\n";
2703         }
2704         if (defined $extra) {
2705                 print "<tr>\n";
2706                 if ($check_forks) {
2707                         print "<td></td>\n";
2708                 }
2709                 print "<td colspan=\"5\">$extra</td>\n" .
2710                       "</tr>\n";
2711         }
2712         print "</table>\n";
2713 }
2714
2715 sub git_shortlog_body {
2716         # uses global variable $project
2717         my ($commitlist, $from, $to, $refs, $extra) = @_;
2718
2719         my $have_snapshot = gitweb_have_snapshot();
2720
2721         $from = 0 unless defined $from;
2722         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2723
2724         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2725         my $alternate = 1;
2726         for (my $i = $from; $i <= $to; $i++) {
2727                 my %co = %{$commitlist->[$i]};
2728                 my $commit = $co{'id'};
2729                 my $ref = format_ref_marker($refs, $commit);
2730                 if ($alternate) {
2731                         print "<tr class=\"dark\">\n";
2732                 } else {
2733                         print "<tr class=\"light\">\n";
2734                 }
2735                 $alternate ^= 1;
2736                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2737                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2738                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2739                       "<td>";
2740                 print format_subject_html($co{'title'}, $co{'title_short'},
2741                                           href(action=>"commit", hash=>$commit), $ref);
2742                 print "</td>\n" .
2743                       "<td class=\"link\">" .
2744                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2745                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2746                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2747                 if ($have_snapshot) {
2748                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2749                 }
2750                 print "</td>\n" .
2751                       "</tr>\n";
2752         }
2753         if (defined $extra) {
2754                 print "<tr>\n" .
2755                       "<td colspan=\"4\">$extra</td>\n" .
2756                       "</tr>\n";
2757         }
2758         print "</table>\n";
2759 }
2760
2761 sub git_history_body {
2762         # Warning: assumes constant type (blob or tree) during history
2763         my ($commitlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2764
2765         $from = 0 unless defined $from;
2766         $to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
2767
2768         print "<table class=\"history\" cellspacing=\"0\">\n";
2769         my $alternate = 1;
2770         for (my $i = $from; $i <= $to; $i++) {
2771                 my %co = %{$commitlist->[$i]};
2772                 if (!%co) {
2773                         next;
2774                 }
2775                 my $commit = $co{'id'};
2776
2777                 my $ref = format_ref_marker($refs, $commit);
2778
2779                 if ($alternate) {
2780                         print "<tr class=\"dark\">\n";
2781                 } else {
2782                         print "<tr class=\"light\">\n";
2783                 }
2784                 $alternate ^= 1;
2785                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2786                       # shortlog uses      chop_str($co{'author_name'}, 10)
2787                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2788                       "<td>";
2789                 # originally git_history used chop_str($co{'title'}, 50)
2790                 print format_subject_html($co{'title'}, $co{'title_short'},
2791                                           href(action=>"commit", hash=>$commit), $ref);
2792                 print "</td>\n" .
2793                       "<td class=\"link\">" .
2794                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2795                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2796
2797                 if ($ftype eq 'blob') {
2798                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2799                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2800                         if (defined $blob_current && defined $blob_parent &&
2801                                         $blob_current ne $blob_parent) {
2802                                 print " | " .
2803                                         $cgi->a({-href => href(action=>"blobdiff",
2804                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2805                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2806                                                                file_name=>$file_name)},
2807                                                 "diff to current");
2808                         }
2809                 }
2810                 print "</td>\n" .
2811                       "</tr>\n";
2812         }
2813         if (defined $extra) {
2814                 print "<tr>\n" .
2815                       "<td colspan=\"4\">$extra</td>\n" .
2816                       "</tr>\n";
2817         }
2818         print "</table>\n";
2819 }
2820
2821 sub git_tags_body {
2822         # uses global variable $project
2823         my ($taglist, $from, $to, $extra) = @_;
2824         $from = 0 unless defined $from;
2825         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2826
2827         print "<table class=\"tags\" cellspacing=\"0\">\n";
2828         my $alternate = 1;
2829         for (my $i = $from; $i <= $to; $i++) {
2830                 my $entry = $taglist->[$i];
2831                 my %tag = %$entry;
2832                 my $comment = $tag{'subject'};
2833                 my $comment_short;
2834                 if (defined $comment) {
2835                         $comment_short = chop_str($comment, 30, 5);
2836                 }
2837                 if ($alternate) {
2838                         print "<tr class=\"dark\">\n";
2839                 } else {
2840                         print "<tr class=\"light\">\n";
2841                 }
2842                 $alternate ^= 1;
2843                 if (defined $tag{'age'}) {
2844                         print "<td><i>$tag{'age'}</i></td>\n";
2845                 } else {
2846                         print "<td></td>\n";
2847                 }
2848                 print "<td>" .
2849                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2850                                -class => "list name"}, esc_html($tag{'name'})) .
2851                       "</td>\n" .
2852                       "<td>";
2853                 if (defined $comment) {
2854                         print format_subject_html($comment, $comment_short,
2855                                                   href(action=>"tag", hash=>$tag{'id'}));
2856                 }
2857                 print "</td>\n" .
2858                       "<td class=\"selflink\">";
2859                 if ($tag{'type'} eq "tag") {
2860                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2861                 } else {
2862                         print "&nbsp;";
2863                 }
2864                 print "</td>\n" .
2865                       "<td class=\"link\">" . " | " .
2866                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2867                 if ($tag{'reftype'} eq "commit") {
2868                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2869                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2870                 } elsif ($tag{'reftype'} eq "blob") {
2871                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2872                 }
2873                 print "</td>\n" .
2874                       "</tr>";
2875         }
2876         if (defined $extra) {
2877                 print "<tr>\n" .
2878                       "<td colspan=\"5\">$extra</td>\n" .
2879                       "</tr>\n";
2880         }
2881         print "</table>\n";
2882 }
2883
2884 sub git_heads_body {
2885         # uses global variable $project
2886         my ($headlist, $head, $from, $to, $extra) = @_;
2887         $from = 0 unless defined $from;
2888         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2889
2890         print "<table class=\"heads\" cellspacing=\"0\">\n";
2891         my $alternate = 1;
2892         for (my $i = $from; $i <= $to; $i++) {
2893                 my $entry = $headlist->[$i];
2894                 my %ref = %$entry;
2895                 my $curr = $ref{'id'} eq $head;
2896                 if ($alternate) {
2897                         print "<tr class=\"dark\">\n";
2898                 } else {
2899                         print "<tr class=\"light\">\n";
2900                 }
2901                 $alternate ^= 1;
2902                 print "<td><i>$ref{'age'}</i></td>\n" .
2903                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2904                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2905                                -class => "list name"},esc_html($ref{'name'})) .
2906                       "</td>\n" .
2907                       "<td class=\"link\">" .
2908                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2909                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2910                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2911                       "</td>\n" .
2912                       "</tr>";
2913         }
2914         if (defined $extra) {
2915                 print "<tr>\n" .
2916                       "<td colspan=\"3\">$extra</td>\n" .
2917                       "</tr>\n";
2918         }
2919         print "</table>\n";
2920 }
2921
2922 sub git_search_grep_body {
2923         my ($commitlist, $from, $to, $extra) = @_;
2924         $from = 0 unless defined $from;
2925         $to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
2926
2927         print "<table class=\"grep\" cellspacing=\"0\">\n";
2928         my $alternate = 1;
2929         for (my $i = $from; $i <= $to; $i++) {
2930                 my %co = %{$commitlist->[$i]};
2931                 if (!%co) {
2932                         next;
2933                 }
2934                 my $commit = $co{'id'};
2935                 if ($alternate) {
2936                         print "<tr class=\"dark\">\n";
2937                 } else {
2938                         print "<tr class=\"light\">\n";
2939                 }
2940                 $alternate ^= 1;
2941                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2942                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2943                       "<td>" .
2944                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2945                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2946                 my $comment = $co{'comment'};
2947                 foreach my $line (@$comment) {
2948                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2949                                 my $lead = esc_html($1) || "";
2950                                 $lead = chop_str($lead, 30, 10);
2951                                 my $match = esc_html($2) || "";
2952                                 my $trail = esc_html($3) || "";
2953                                 $trail = chop_str($trail, 30, 10);
2954                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2955                                 print chop_str($text, 80, 5) . "<br/>\n";
2956                         }
2957                 }
2958                 print "</td>\n" .
2959                       "<td class=\"link\">" .
2960                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2961                       " | " .
2962                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2963                 print "</td>\n" .
2964                       "</tr>\n";
2965         }
2966         if (defined $extra) {
2967                 print "<tr>\n" .
2968                       "<td colspan=\"3\">$extra</td>\n" .
2969                       "</tr>\n";
2970         }
2971         print "</table>\n";
2972 }
2973
2974 ## ======================================================================
2975 ## ======================================================================
2976 ## actions
2977
2978 sub git_project_list {
2979         my $order = $cgi->param('o');
2980         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
2981                 die_error(undef, "Unknown order parameter");
2982         }
2983
2984         my @list = git_get_projects_list();
2985         if (!@list) {
2986                 die_error(undef, "No projects found");
2987         }
2988
2989         git_header_html();
2990         if (-f $home_text) {
2991                 print "<div class=\"index_include\">\n";
2992                 open (my $fd, $home_text);
2993                 print <$fd>;
2994                 close $fd;
2995                 print "</div>\n";
2996         }
2997         git_project_list_body(\@list, $order);
2998         git_footer_html();
2999 }
3000
3001 sub git_forks {
3002         my $order = $cgi->param('o');
3003         if (defined $order && $order !~ m/none|project|descr|owner|age/) {
3004                 die_error(undef, "Unknown order parameter");
3005         }
3006
3007         my @list = git_get_projects_list($project);
3008         if (!@list) {
3009                 die_error(undef, "No forks found");
3010         }
3011
3012         git_header_html();
3013         git_print_page_nav('','');
3014         git_print_header_div('summary', "$project forks");
3015         git_project_list_body(\@list, $order);
3016         git_footer_html();
3017 }
3018
3019 sub git_project_index {
3020         my @projects = git_get_projects_list($project);
3021
3022         print $cgi->header(
3023                 -type => 'text/plain',
3024                 -charset => 'utf-8',
3025                 -content_disposition => 'inline; filename="index.aux"');
3026
3027         foreach my $pr (@projects) {
3028                 if (!exists $pr->{'owner'}) {
3029                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}");
3030                 }
3031
3032                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3033                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3034                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3035                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3036                 $path  =~ s/ /\+/g;
3037                 $owner =~ s/ /\+/g;
3038
3039                 print "$path $owner\n";
3040         }
3041 }
3042
3043 sub git_summary {
3044         my $descr = git_get_project_description($project) || "none";
3045         my %co = parse_commit("HEAD");
3046         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3047         my $head = $co{'id'};
3048
3049         my $owner = git_get_project_owner($project);
3050
3051         my $refs = git_get_references();
3052         # These get_*_list functions return one more to allow us to see if
3053         # there are more ...
3054         my @taglist  = git_get_tags_list(16);
3055         my @headlist = git_get_heads_list(16);
3056         my @forklist;
3057         my ($check_forks) = gitweb_check_feature('forks');
3058
3059         if ($check_forks) {
3060                 @forklist = git_get_projects_list($project);
3061         }
3062
3063         git_header_html();
3064         git_print_page_nav('summary','', $head);
3065
3066         print "<div class=\"title\">&nbsp;</div>\n";
3067         print "<table cellspacing=\"0\">\n" .
3068               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3069               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3070               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3071         # use per project git URL list in $projectroot/$project/cloneurl
3072         # or make project git URL from git base URL and project name
3073         my $url_tag = "URL";
3074         my @url_list = git_get_project_url_list($project);
3075         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3076         foreach my $git_url (@url_list) {
3077                 next unless $git_url;
3078                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3079                 $url_tag = "";
3080         }
3081         print "</table>\n";
3082
3083         if (-s "$projectroot/$project/README.html") {
3084                 if (open my $fd, "$projectroot/$project/README.html") {
3085                         print "<div class=\"title\">readme</div>\n";
3086                         print $_ while (<$fd>);
3087                         close $fd;
3088                 }
3089         }
3090
3091         # we need to request one more than 16 (0..15) to check if
3092         # those 16 are all
3093         my @commitlist = parse_commits($head, 17);
3094         git_print_header_div('shortlog');
3095         git_shortlog_body(\@commitlist, 0, 15, $refs,
3096                           $#commitlist <=  15 ? undef :
3097                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3098
3099         if (@taglist) {
3100                 git_print_header_div('tags');
3101                 git_tags_body(\@taglist, 0, 15,
3102                               $#taglist <=  15 ? undef :
3103                               $cgi->a({-href => href(action=>"tags")}, "..."));
3104         }
3105
3106         if (@headlist) {
3107                 git_print_header_div('heads');
3108                 git_heads_body(\@headlist, $head, 0, 15,
3109                                $#headlist <= 15 ? undef :
3110                                $cgi->a({-href => href(action=>"heads")}, "..."));
3111         }
3112
3113         if (@forklist) {
3114                 git_print_header_div('forks');
3115                 git_project_list_body(\@forklist, undef, 0, 15,
3116                                       $#forklist <= 15 ? undef :
3117                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3118                                       'noheader');
3119         }
3120
3121         git_footer_html();
3122 }
3123
3124 sub git_tag {
3125         my $head = git_get_head_hash($project);
3126         git_header_html();
3127         git_print_page_nav('','', $head,undef,$head);
3128         my %tag = parse_tag($hash);
3129         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3130         print "<div class=\"title_text\">\n" .
3131               "<table cellspacing=\"0\">\n" .
3132               "<tr>\n" .
3133               "<td>object</td>\n" .
3134               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3135                                $tag{'object'}) . "</td>\n" .
3136               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3137                                               $tag{'type'}) . "</td>\n" .
3138               "</tr>\n";
3139         if (defined($tag{'author'})) {
3140                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3141                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3142                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3143                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3144                         "</td></tr>\n";
3145         }
3146         print "</table>\n\n" .
3147               "</div>\n";
3148         print "<div class=\"page_body\">";
3149         my $comment = $tag{'comment'};
3150         foreach my $line (@$comment) {
3151                 chomp $line;
3152                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3153         }
3154         print "</div>\n";
3155         git_footer_html();
3156 }
3157
3158 sub git_blame2 {
3159         my $fd;
3160         my $ftype;
3161
3162         my ($have_blame) = gitweb_check_feature('blame');
3163         if (!$have_blame) {
3164                 die_error('403 Permission denied', "Permission denied");
3165         }
3166         die_error('404 Not Found', "File name not defined") if (!$file_name);
3167         $hash_base ||= git_get_head_hash($project);
3168         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3169         my %co = parse_commit($hash_base)
3170                 or die_error(undef, "Reading commit failed");
3171         if (!defined $hash) {
3172                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3173                         or die_error(undef, "Error looking up file");
3174         }
3175         $ftype = git_get_type($hash);
3176         if ($ftype !~ "blob") {
3177                 die_error('400 Bad Request', "Object is not a blob");
3178         }
3179         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3180               $file_name, $hash_base)
3181                 or die_error(undef, "Open git-blame failed");
3182         git_header_html();
3183         my $formats_nav =
3184                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3185                         "blob") .
3186                 " | " .
3187                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3188                         "history") .
3189                 " | " .
3190                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3191                         "HEAD");
3192         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3193         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3194         git_print_page_path($file_name, $ftype, $hash_base);
3195         my @rev_color = (qw(light2 dark2));
3196         my $num_colors = scalar(@rev_color);
3197         my $current_color = 0;
3198         my $last_rev;
3199         print <<HTML;
3200 <div class="page_body">
3201 <table class="blame">
3202 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3203 HTML
3204         my %metainfo = ();
3205         while (1) {
3206                 $_ = <$fd>;
3207                 last unless defined $_;
3208                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3209                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3210                 if (!exists $metainfo{$full_rev}) {
3211                         $metainfo{$full_rev} = {};
3212                 }
3213                 my $meta = $metainfo{$full_rev};
3214                 while (<$fd>) {
3215                         last if (s/^\t//);
3216                         if (/^(\S+) (.*)$/) {
3217                                 $meta->{$1} = $2;
3218                         }
3219                 }
3220                 my $data = $_;
3221                 chomp $data;
3222                 my $rev = substr($full_rev, 0, 8);
3223                 my $author = $meta->{'author'};
3224                 my %date = parse_date($meta->{'author-time'},
3225                                       $meta->{'author-tz'});
3226                 my $date = $date{'iso-tz'};
3227                 if ($group_size) {
3228                         $current_color = ++$current_color % $num_colors;
3229                 }
3230                 print "<tr class=\"$rev_color[$current_color]\">\n";
3231                 if ($group_size) {
3232                         print "<td class=\"sha1\"";
3233                         print " title=\"". esc_html($author) . ", $date\"";
3234                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3235                         print ">";
3236                         print $cgi->a({-href => href(action=>"commit",
3237                                                      hash=>$full_rev,
3238                                                      file_name=>$file_name)},
3239                                       esc_html($rev));
3240                         print "</td>\n";
3241                 }
3242                 open (my $dd, "-|", git_cmd(), "rev-parse", "$full_rev^")
3243                         or die_error(undef, "Open git-rev-parse failed");
3244                 my $parent_commit = <$dd>;
3245                 close $dd;
3246                 chomp($parent_commit);
3247                 my $blamed = href(action => 'blame',
3248                                   file_name => $meta->{'filename'},
3249                                   hash_base => $parent_commit);
3250                 print "<td class=\"linenr\">";
3251                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3252                                 -id => "l$lineno",
3253                                 -class => "linenr" },
3254                               esc_html($lineno));
3255                 print "</td>";
3256                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3257                 print "</tr>\n";
3258         }
3259         print "</table>\n";
3260         print "</div>";
3261         close $fd
3262                 or print "Reading blob failed\n";
3263         git_footer_html();
3264 }
3265
3266 sub git_blame {
3267         my $fd;
3268
3269         my ($have_blame) = gitweb_check_feature('blame');
3270         if (!$have_blame) {
3271                 die_error('403 Permission denied', "Permission denied");
3272         }
3273         die_error('404 Not Found', "File name not defined") if (!$file_name);
3274         $hash_base ||= git_get_head_hash($project);
3275         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3276         my %co = parse_commit($hash_base)
3277                 or die_error(undef, "Reading commit failed");
3278         if (!defined $hash) {
3279                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3280                         or die_error(undef, "Error lookup file");
3281         }
3282         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3283                 or die_error(undef, "Open git-annotate failed");
3284         git_header_html();
3285         my $formats_nav =
3286                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3287                         "blob") .
3288                 " | " .
3289                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3290                         "history") .
3291                 " | " .
3292                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3293                         "HEAD");
3294         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3295         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3296         git_print_page_path($file_name, 'blob', $hash_base);
3297         print "<div class=\"page_body\">\n";
3298         print <<HTML;
3299 <table class="blame">
3300   <tr>
3301     <th>Commit</th>
3302     <th>Age</th>
3303     <th>Author</th>
3304     <th>Line</th>
3305     <th>Data</th>
3306   </tr>
3307 HTML
3308         my @line_class = (qw(light dark));
3309         my $line_class_len = scalar (@line_class);
3310         my $line_class_num = $#line_class;
3311         while (my $line = <$fd>) {
3312                 my $long_rev;
3313                 my $short_rev;
3314                 my $author;
3315                 my $time;
3316                 my $lineno;
3317                 my $data;
3318                 my $age;
3319                 my $age_str;
3320                 my $age_class;
3321
3322                 chomp $line;
3323                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3324
3325                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3326                         $long_rev = $1;
3327                         $author   = $2;
3328                         $time     = $3;
3329                         $lineno   = $4;
3330                         $data     = $5;
3331                 } else {
3332                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3333                         next;
3334                 }
3335                 $short_rev  = substr ($long_rev, 0, 8);
3336                 $age        = time () - $time;
3337                 $age_str    = age_string ($age);
3338                 $age_str    =~ s/ /&nbsp;/g;
3339                 $age_class  = age_class($age);
3340                 $author     = esc_html ($author);
3341                 $author     =~ s/ /&nbsp;/g;
3342
3343                 $data = untabify($data);
3344                 $data = esc_html ($data);
3345
3346                 print <<HTML;
3347   <tr class="$line_class[$line_class_num]">
3348     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3349     <td class="$age_class">$age_str</td>
3350     <td>$author</td>
3351     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3352     <td class="pre">$data</td>
3353   </tr>
3354 HTML
3355         } # while (my $line = <$fd>)
3356         print "</table>\n\n";
3357         close $fd
3358                 or print "Reading blob failed.\n";
3359         print "</div>";
3360         git_footer_html();
3361 }
3362
3363 sub git_tags {
3364         my $head = git_get_head_hash($project);
3365         git_header_html();
3366         git_print_page_nav('','', $head,undef,$head);
3367         git_print_header_div('summary', $project);
3368
3369         my @tagslist = git_get_tags_list();
3370         if (@tagslist) {
3371                 git_tags_body(\@tagslist);
3372         }
3373         git_footer_html();
3374 }
3375
3376 sub git_heads {
3377         my $head = git_get_head_hash($project);
3378         git_header_html();
3379         git_print_page_nav('','', $head,undef,$head);
3380         git_print_header_div('summary', $project);
3381
3382         my @headslist = git_get_heads_list();
3383         if (@headslist) {
3384                 git_heads_body(\@headslist, $head);
3385         }
3386         git_footer_html();
3387 }
3388
3389 sub git_blob_plain {
3390         my $expires;
3391
3392         if (!defined $hash) {
3393                 if (defined $file_name) {
3394                         my $base = $hash_base || git_get_head_hash($project);
3395                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3396                                 or die_error(undef, "Error lookup file");
3397                 } else {
3398                         die_error(undef, "No file name defined");
3399                 }
3400         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3401                 # blobs defined by non-textual hash id's can be cached
3402                 $expires = "+1d";
3403         }
3404
3405         my $type = shift;
3406         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3407                 or die_error(undef, "Couldn't cat $file_name, $hash");
3408
3409         $type ||= blob_mimetype($fd, $file_name);
3410
3411         # save as filename, even when no $file_name is given
3412         my $save_as = "$hash";
3413         if (defined $file_name) {
3414                 $save_as = $file_name;
3415         } elsif ($type =~ m/^text\//) {
3416                 $save_as .= '.txt';
3417         }
3418
3419         print $cgi->header(
3420                 -type => "$type",
3421                 -expires=>$expires,
3422                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3423         undef $/;
3424         binmode STDOUT, ':raw';
3425         print <$fd>;
3426         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3427         $/ = "\n";
3428         close $fd;
3429 }
3430
3431 sub git_blob {
3432         my $expires;
3433
3434         if (!defined $hash) {
3435                 if (defined $file_name) {
3436                         my $base = $hash_base || git_get_head_hash($project);
3437                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3438                                 or die_error(undef, "Error lookup file");
3439                 } else {
3440                         die_error(undef, "No file name defined");
3441                 }
3442         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3443                 # blobs defined by non-textual hash id's can be cached
3444                 $expires = "+1d";
3445         }
3446
3447         my ($have_blame) = gitweb_check_feature('blame');
3448         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3449                 or die_error(undef, "Couldn't cat $file_name, $hash");
3450         my $mimetype = blob_mimetype($fd, $file_name);
3451         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3452                 close $fd;
3453                 return git_blob_plain($mimetype);
3454         }
3455         # we can have blame only for text/* mimetype
3456         $have_blame &&= ($mimetype =~ m!^text/!);
3457
3458         git_header_html(undef, $expires);
3459         my $formats_nav = '';
3460         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3461                 if (defined $file_name) {
3462                         if ($have_blame) {
3463                                 $formats_nav .=
3464                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3465                                                                hash=>$hash, file_name=>$file_name)},
3466                                                 "blame") .
3467                                         " | ";
3468                         }
3469                         $formats_nav .=
3470                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3471                                                        hash=>$hash, file_name=>$file_name)},
3472                                         "history") .
3473                                 " | " .
3474                                 $cgi->a({-href => href(action=>"blob_plain",
3475                                                        hash=>$hash, file_name=>$file_name)},
3476                                         "raw") .
3477                                 " | " .
3478                                 $cgi->a({-href => href(action=>"blob",
3479                                                        hash_base=>"HEAD", file_name=>$file_name)},
3480                                         "HEAD");
3481                 } else {
3482                         $formats_nav .=
3483                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3484                 }
3485                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3486                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3487         } else {
3488                 print "<div class=\"page_nav\">\n" .
3489                       "<br/><br/></div>\n" .
3490                       "<div class=\"title\">$hash</div>\n";
3491         }
3492         git_print_page_path($file_name, "blob", $hash_base);
3493         print "<div class=\"page_body\">\n";
3494         if ($mimetype =~ m!^text/!) {
3495                 my $nr;
3496                 while (my $line = <$fd>) {
3497                         chomp $line;
3498                         $nr++;
3499                         $line = untabify($line);
3500                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3501                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3502                 }
3503         } elsif ($mimetype =~ m!^image/!) {
3504                 print qq!<img type="$mimetype"!;
3505                 if ($file_name) {
3506                         print qq! alt="$file_name" title="$file_name"!;
3507                 }
3508                 print qq! src="! .
3509                       href(action=>"blob_plain", hash=>$hash,
3510                            hash_base=>$hash_base, file_name=>$file_name) .
3511                       qq!" />\n!;
3512         }
3513         close $fd
3514                 or print "Reading blob failed.\n";
3515         print "</div>";
3516         git_footer_html();
3517 }
3518
3519 sub git_tree {
3520         my $have_snapshot = gitweb_have_snapshot();
3521
3522         if (!defined $hash_base) {
3523                 $hash_base = "HEAD";
3524         }
3525         if (!defined $hash) {
3526                 if (defined $file_name) {
3527                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3528                 } else {
3529                         $hash = $hash_base;
3530                 }
3531         }
3532         $/ = "\0";
3533         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3534                 or die_error(undef, "Open git-ls-tree failed");
3535         my @entries = map { chomp; $_ } <$fd>;
3536         close $fd or die_error(undef, "Reading tree failed");
3537         $/ = "\n";
3538
3539         my $refs = git_get_references();
3540         my $ref = format_ref_marker($refs, $hash_base);
3541         git_header_html();
3542         my $basedir = '';
3543         my ($have_blame) = gitweb_check_feature('blame');
3544         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3545                 my @views_nav = ();
3546                 if (defined $file_name) {
3547                         push @views_nav,
3548                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3549                                                        hash=>$hash, file_name=>$file_name)},
3550                                         "history"),
3551                                 $cgi->a({-href => href(action=>"tree",
3552                                                        hash_base=>"HEAD", file_name=>$file_name)},
3553                                         "HEAD"),
3554                 }
3555                 if ($have_snapshot) {
3556                         # FIXME: Should be available when we have no hash base as well.
3557                         push @views_nav,
3558                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3559                                         "snapshot");
3560                 }
3561                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3562                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3563         } else {
3564                 undef $hash_base;
3565                 print "<div class=\"page_nav\">\n";
3566                 print "<br/><br/></div>\n";
3567                 print "<div class=\"title\">$hash</div>\n";
3568         }
3569         if (defined $file_name) {
3570                 $basedir = $file_name;
3571                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3572                         $basedir .= '/';
3573                 }
3574         }
3575         git_print_page_path($file_name, 'tree', $hash_base);
3576         print "<div class=\"page_body\">\n";
3577         print "<table cellspacing=\"0\">\n";
3578         my $alternate = 1;
3579         # '..' (top directory) link if possible
3580         if (defined $hash_base &&
3581             defined $file_name && $file_name =~ m![^/]+$!) {
3582                 if ($alternate) {
3583                         print "<tr class=\"dark\">\n";
3584                 } else {
3585                         print "<tr class=\"light\">\n";
3586                 }
3587                 $alternate ^= 1;
3588
3589                 my $up = $file_name;
3590                 $up =~ s!/?[^/]+$!!;
3591                 undef $up unless $up;
3592                 # based on git_print_tree_entry
3593                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3594                 print '<td class="list">';
3595                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3596                                              file_name=>$up)},
3597                               "..");
3598                 print "</td>\n";
3599                 print "<td class=\"link\"></td>\n";
3600
3601                 print "</tr>\n";
3602         }
3603         foreach my $line (@entries) {
3604                 my %t = parse_ls_tree_line($line, -z => 1);
3605
3606                 if ($alternate) {
3607                         print "<tr class=\"dark\">\n";
3608                 } else {
3609                         print "<tr class=\"light\">\n";
3610                 }
3611                 $alternate ^= 1;
3612
3613                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3614
3615                 print "</tr>\n";
3616         }
3617         print "</table>\n" .
3618               "</div>";
3619         git_footer_html();
3620 }
3621
3622 sub git_snapshot {
3623         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3624         my $have_snapshot = (defined $ctype && defined $suffix);
3625         if (!$have_snapshot) {
3626                 die_error('403 Permission denied', "Permission denied");
3627         }
3628
3629         if (!defined $hash) {
3630                 $hash = git_get_head_hash($project);
3631         }
3632
3633         my $filename = decode_utf8(basename($project)) . "-$hash.tar.$suffix";
3634
3635         print $cgi->header(
3636                 -type => "application/$ctype",
3637                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3638                 -status => '200 OK');
3639
3640         my $git = git_cmd_str();
3641         my $name = $project;
3642         $name =~ s/\047/\047\\\047\047/g;
3643         open my $fd, "-|",
3644                 "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3645                 or die_error(undef, "Execute git-tar-tree failed");
3646         binmode STDOUT, ':raw';
3647         print <$fd>;
3648         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3649         close $fd;
3650
3651 }
3652
3653 sub git_log {
3654         my $head = git_get_head_hash($project);
3655         if (!defined $hash) {
3656                 $hash = $head;
3657         }
3658         if (!defined $page) {
3659                 $page = 0;
3660         }
3661         my $refs = git_get_references();
3662
3663         my @commitlist = parse_commits($hash, 101, (100 * $page));
3664
3665         my $paging_nav = format_paging_nav('log', $hash, $head, $page, (100 * ($page+1)));
3666
3667         git_header_html();
3668         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3669
3670         if (!@commitlist) {
3671                 my %co = parse_commit($hash);
3672
3673                 git_print_header_div('summary', $project);
3674                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3675         }
3676         my $to = ($#commitlist >= 99) ? (99) : ($#commitlist);
3677         for (my $i = 0; $i <= $to; $i++) {
3678                 my %co = %{$commitlist[$i]};
3679                 next if !%co;
3680                 my $commit = $co{'id'};
3681                 my $ref = format_ref_marker($refs, $commit);
3682                 my %ad = parse_date($co{'author_epoch'});
3683                 git_print_header_div('commit',
3684                                "<span class=\"age\">$co{'age_string'}</span>" .
3685                                esc_html($co{'title'}) . $ref,
3686                                $commit);
3687                 print "<div class=\"title_text\">\n" .
3688                       "<div class=\"log_link\">\n" .
3689                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3690                       " | " .
3691                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3692                       " | " .
3693                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3694                       "<br/>\n" .
3695                       "</div>\n" .
3696                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3697                       "</div>\n";
3698
3699                 print "<div class=\"log_body\">\n";
3700                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3701                 print "</div>\n";
3702         }
3703         if ($#commitlist >= 100) {
3704                 print "<div class=\"page_nav\">\n";
3705                 print $cgi->a({-href => href(action=>"log", hash=>$hash, page=>$page+1),
3706                                -accesskey => "n", -title => "Alt-n"}, "next");
3707                 print "</div>\n";
3708         }
3709         git_footer_html();
3710 }
3711
3712 sub git_commit {
3713         $hash ||= $hash_base || "HEAD";
3714         my %co = parse_commit($hash);
3715         if (!%co) {
3716                 die_error(undef, "Unknown commit object");
3717         }
3718         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3719         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3720
3721         my $parent  = $co{'parent'};
3722         my $parents = $co{'parents'}; # listref
3723
3724         # we need to prepare $formats_nav before any parameter munging
3725         my $formats_nav;
3726         if (!defined $parent) {
3727                 # --root commitdiff
3728                 $formats_nav .= '(initial)';
3729         } elsif (@$parents == 1) {
3730                 # single parent commit
3731                 $formats_nav .=
3732                         '(parent: ' .
3733                         $cgi->a({-href => href(action=>"commit",
3734                                                hash=>$parent)},
3735                                 esc_html(substr($parent, 0, 7))) .
3736                         ')';
3737         } else {
3738                 # merge commit
3739                 $formats_nav .=
3740                         '(merge: ' .
3741                         join(' ', map {
3742                                 $cgi->a({-href => href(action=>"commit",
3743                                                        hash=>$_)},
3744                                         esc_html(substr($_, 0, 7)));
3745                         } @$parents ) .
3746                         ')';
3747         }
3748
3749         if (!defined $parent) {
3750                 $parent = "--root";
3751         }
3752         my @difftree;
3753         if (@$parents <= 1) {
3754                 # difftree output is not printed for merges
3755                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3756                         @diff_opts, $parent, $hash, "--"
3757                         or die_error(undef, "Open git-diff-tree failed");
3758                 @difftree = map { chomp; $_ } <$fd>;
3759                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3760         }
3761
3762         # non-textual hash id's can be cached
3763         my $expires;
3764         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3765                 $expires = "+1d";
3766         }
3767         my $refs = git_get_references();
3768         my $ref = format_ref_marker($refs, $co{'id'});
3769
3770         my $have_snapshot = gitweb_have_snapshot();
3771
3772         git_header_html(undef, $expires);
3773         git_print_page_nav('commit', '',
3774                            $hash, $co{'tree'}, $hash,
3775                            $formats_nav);
3776
3777         if (defined $co{'parent'}) {
3778                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3779         } else {
3780                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3781         }
3782         print "<div class=\"title_text\">\n" .
3783               "<table cellspacing=\"0\">\n";
3784         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3785               "<tr>" .
3786               "<td></td><td> $ad{'rfc2822'}";
3787         if ($ad{'hour_local'} < 6) {
3788                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3789                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3790         } else {
3791                 printf(" (%02d:%02d %s)",
3792                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3793         }
3794         print "</td>" .
3795               "</tr>\n";
3796         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3797         print "<tr><td></td><td> $cd{'rfc2822'}" .
3798               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3799               "</td></tr>\n";
3800         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3801         print "<tr>" .
3802               "<td>tree</td>" .
3803               "<td class=\"sha1\">" .
3804               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3805                        class => "list"}, $co{'tree'}) .
3806               "</td>" .
3807               "<td class=\"link\">" .
3808               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3809                       "tree");
3810         if ($have_snapshot) {
3811                 print " | " .
3812                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3813         }
3814         print "</td>" .
3815               "</tr>\n";
3816
3817         foreach my $par (@$parents) {
3818                 print "<tr>" .
3819                       "<td>parent</td>" .
3820                       "<td class=\"sha1\">" .
3821                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3822                                class => "list"}, $par) .
3823                       "</td>" .
3824                       "<td class=\"link\">" .
3825                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3826                       " | " .
3827                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3828                       "</td>" .
3829                       "</tr>\n";
3830         }
3831         print "</table>".
3832               "</div>\n";
3833
3834         print "<div class=\"page_body\">\n";
3835         git_print_log($co{'comment'});
3836         print "</div>\n";
3837
3838         if (@$parents <= 1) {
3839                 # do not output difftree/whatchanged for merges
3840                 git_difftree_body(\@difftree, $hash, $parent);
3841         }
3842
3843         git_footer_html();
3844 }
3845
3846 sub git_object {
3847         # object is defined by:
3848         # - hash or hash_base alone
3849         # - hash_base and file_name
3850         my $type;
3851
3852         # - hash or hash_base alone
3853         if ($hash || ($hash_base && !defined $file_name)) {
3854                 my $object_id = $hash || $hash_base;
3855
3856                 my $git_command = git_cmd_str();
3857                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3858                         or die_error('404 Not Found', "Object does not exist");
3859                 $type = <$fd>;
3860                 chomp $type;
3861                 close $fd
3862                         or die_error('404 Not Found', "Object does not exist");
3863
3864         # - hash_base and file_name
3865         } elsif ($hash_base && defined $file_name) {
3866                 $file_name =~ s,/+$,,;
3867
3868                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3869                         or die_error('404 Not Found', "Base object does not exist");
3870
3871                 # here errors should not hapen
3872                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3873                         or die_error(undef, "Open git-ls-tree failed");
3874                 my $line = <$fd>;
3875                 close $fd;
3876
3877                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3878                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3879                         die_error('404 Not Found', "File or directory for given base does not exist");
3880                 }
3881                 $type = $2;
3882                 $hash = $3;
3883         } else {
3884                 die_error('404 Not Found', "Not enough information to find object");
3885         }
3886
3887         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3888                                           hash=>$hash, hash_base=>$hash_base,
3889                                           file_name=>$file_name),
3890                              -status => '302 Found');
3891 }
3892
3893 sub git_blobdiff {
3894         my $format = shift || 'html';
3895
3896         my $fd;
3897         my @difftree;
3898         my %diffinfo;
3899         my $expires;
3900
3901         # preparing $fd and %diffinfo for git_patchset_body
3902         # new style URI
3903         if (defined $hash_base && defined $hash_parent_base) {
3904                 if (defined $file_name) {
3905                         # read raw output
3906                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3907                                 $hash_parent_base, $hash_base,
3908                                 "--", (defined $file_parent ? $file_parent : ()), $file_name
3909                                 or die_error(undef, "Open git-diff-tree failed");
3910                         @difftree = map { chomp; $_ } <$fd>;
3911                         close $fd
3912                                 or die_error(undef, "Reading git-diff-tree failed");
3913                         @difftree
3914                                 or die_error('404 Not Found', "Blob diff not found");
3915
3916                 } elsif (defined $hash &&
3917                          $hash =~ /[0-9a-fA-F]{40}/) {
3918                         # try to find filename from $hash
3919
3920                         # read filtered raw output
3921                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3922                                 $hash_parent_base, $hash_base, "--"
3923                                 or die_error(undef, "Open git-diff-tree failed");
3924                         @difftree =
3925                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3926                                 # $hash == to_id
3927                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3928                                 map { chomp; $_ } <$fd>;
3929                         close $fd
3930                                 or die_error(undef, "Reading git-diff-tree failed");
3931                         @difftree
3932                                 or die_error('404 Not Found', "Blob diff not found");
3933
3934                 } else {
3935                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3936                 }
3937
3938                 if (@difftree > 1) {
3939                         die_error('404 Not Found', "Ambiguous blob diff specification");
3940                 }
3941
3942                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3943                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3944                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3945
3946                 $hash_parent ||= $diffinfo{'from_id'};
3947                 $hash        ||= $diffinfo{'to_id'};
3948
3949                 # non-textual hash id's can be cached
3950                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3951                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3952                         $expires = '+1d';
3953                 }
3954
3955                 # open patch output
3956                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3957                         '-p', ($format eq 'html' ? "--full-index" : ()),
3958                         $hash_parent_base, $hash_base,
3959                         "--", (defined $file_parent ? $file_parent : ()), $file_name
3960                         or die_error(undef, "Open git-diff-tree failed");
3961         }
3962
3963         # old/legacy style URI
3964         if (!%diffinfo && # if new style URI failed
3965             defined $hash && defined $hash_parent) {
3966                 # fake git-diff-tree raw output
3967                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3968                 $diffinfo{'from_id'} = $hash_parent;
3969                 $diffinfo{'to_id'}   = $hash;
3970                 if (defined $file_name) {
3971                         if (defined $file_parent) {
3972                                 $diffinfo{'status'} = '2';
3973                                 $diffinfo{'from_file'} = $file_parent;
3974                                 $diffinfo{'to_file'}   = $file_name;
3975                         } else { # assume not renamed
3976                                 $diffinfo{'status'} = '1';
3977                                 $diffinfo{'from_file'} = $file_name;
3978                                 $diffinfo{'to_file'}   = $file_name;
3979                         }
3980                 } else { # no filename given
3981                         $diffinfo{'status'} = '2';
3982                         $diffinfo{'from_file'} = $hash_parent;
3983                         $diffinfo{'to_file'}   = $hash;
3984                 }
3985
3986                 # non-textual hash id's can be cached
3987                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3988                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3989                         $expires = '+1d';
3990                 }
3991
3992                 # open patch output
3993                 open $fd, "-|", git_cmd(), "diff", @diff_opts,
3994                         '-p', ($format eq 'html' ? "--full-index" : ()),
3995                         $hash_parent, $hash, "--"
3996                         or die_error(undef, "Open git-diff failed");
3997         } else  {
3998                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3999                         unless %diffinfo;
4000         }
4001
4002         # header
4003         if ($format eq 'html') {
4004                 my $formats_nav =
4005                         $cgi->a({-href => href(action=>"blobdiff_plain",
4006                                                hash=>$hash, hash_parent=>$hash_parent,
4007                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
4008                                                file_name=>$file_name, file_parent=>$file_parent)},
4009                                 "raw");
4010                 git_header_html(undef, $expires);
4011                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
4012                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
4013                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4014                 } else {
4015                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4016                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4017                 }
4018                 if (defined $file_name) {
4019                         git_print_page_path($file_name, "blob", $hash_base);
4020                 } else {
4021                         print "<div class=\"page_path\"></div>\n";
4022                 }
4023
4024         } elsif ($format eq 'plain') {
4025                 print $cgi->header(
4026                         -type => 'text/plain',
4027                         -charset => 'utf-8',
4028                         -expires => $expires,
4029                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4030
4031                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4032
4033         } else {
4034                 die_error(undef, "Unknown blobdiff format");
4035         }
4036
4037         # patch
4038         if ($format eq 'html') {
4039                 print "<div class=\"page_body\">\n";
4040
4041                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4042                 close $fd;
4043
4044                 print "</div>\n"; # class="page_body"
4045                 git_footer_html();
4046
4047         } else {
4048                 while (my $line = <$fd>) {
4049                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4050                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4051
4052                         print $line;
4053
4054                         last if $line =~ m!^\+\+\+!;
4055                 }
4056                 local $/ = undef;
4057                 print <$fd>;
4058                 close $fd;
4059         }
4060 }
4061
4062 sub git_blobdiff_plain {
4063         git_blobdiff('plain');
4064 }
4065
4066 sub git_commitdiff {
4067         my $format = shift || 'html';
4068         $hash ||= $hash_base || "HEAD";
4069         my %co = parse_commit($hash);
4070         if (!%co) {
4071                 die_error(undef, "Unknown commit object");
4072         }
4073
4074         # we need to prepare $formats_nav before any parameter munging
4075         my $formats_nav;
4076         if ($format eq 'html') {
4077                 $formats_nav =
4078                         $cgi->a({-href => href(action=>"commitdiff_plain",
4079                                                hash=>$hash, hash_parent=>$hash_parent)},
4080                                 "raw");
4081
4082                 if (defined $hash_parent) {
4083                         # commitdiff with two commits given
4084                         my $hash_parent_short = $hash_parent;
4085                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4086                                 $hash_parent_short = substr($hash_parent, 0, 7);
4087                         }
4088                         $formats_nav .=
4089                                 ' (from: ' .
4090                                 $cgi->a({-href => href(action=>"commitdiff",
4091                                                        hash=>$hash_parent)},
4092                                         esc_html($hash_parent_short)) .
4093                                 ')';
4094                 } elsif (!$co{'parent'}) {
4095                         # --root commitdiff
4096                         $formats_nav .= ' (initial)';
4097                 } elsif (scalar @{$co{'parents'}} == 1) {
4098                         # single parent commit
4099                         $formats_nav .=
4100                                 ' (parent: ' .
4101                                 $cgi->a({-href => href(action=>"commitdiff",
4102                                                        hash=>$co{'parent'})},
4103                                         esc_html(substr($co{'parent'}, 0, 7))) .
4104                                 ')';
4105                 } else {
4106                         # merge commit
4107                         $formats_nav .=
4108                                 ' (merge: ' .
4109                                 join(' ', map {
4110                                         $cgi->a({-href => href(action=>"commitdiff",
4111                                                                hash=>$_)},
4112                                                 esc_html(substr($_, 0, 7)));
4113                                 } @{$co{'parents'}} ) .
4114                                 ')';
4115                 }
4116         }
4117
4118         if (!defined $hash_parent) {
4119                 $hash_parent = $co{'parent'} || '--root';
4120         }
4121
4122         # read commitdiff
4123         my $fd;
4124         my @difftree;
4125         if ($format eq 'html') {
4126                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4127                         "--no-commit-id", "--patch-with-raw", "--full-index",
4128                         $hash_parent, $hash, "--"
4129                         or die_error(undef, "Open git-diff-tree failed");
4130
4131                 while (my $line = <$fd>) {
4132                         chomp $line;
4133                         # empty line ends raw part of diff-tree output
4134                         last unless $line;
4135                         push @difftree, $line;
4136                 }
4137
4138         } elsif ($format eq 'plain') {
4139                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4140                         '-p', $hash_parent, $hash, "--"
4141                         or die_error(undef, "Open git-diff-tree failed");
4142
4143         } else {
4144                 die_error(undef, "Unknown commitdiff format");
4145         }
4146
4147         # non-textual hash id's can be cached
4148         my $expires;
4149         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4150                 $expires = "+1d";
4151         }
4152
4153         # write commit message
4154         if ($format eq 'html') {
4155                 my $refs = git_get_references();
4156                 my $ref = format_ref_marker($refs, $co{'id'});
4157
4158                 git_header_html(undef, $expires);
4159                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4160                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4161                 git_print_authorship(\%co);
4162                 print "<div class=\"page_body\">\n";
4163                 if (@{$co{'comment'}} > 1) {
4164                         print "<div class=\"log\">\n";
4165                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4166                         print "</div>\n"; # class="log"
4167                 }
4168
4169         } elsif ($format eq 'plain') {
4170                 my $refs = git_get_references("tags");
4171                 my $tagname = git_get_rev_name_tags($hash);
4172                 my $filename = basename($project) . "-$hash.patch";
4173
4174                 print $cgi->header(
4175                         -type => 'text/plain',
4176                         -charset => 'utf-8',
4177                         -expires => $expires,
4178                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4179                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4180                 print <<TEXT;
4181 From: $co{'author'}
4182 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4183 Subject: $co{'title'}
4184 TEXT
4185                 print "X-Git-Tag: $tagname\n" if $tagname;
4186                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4187
4188                 foreach my $line (@{$co{'comment'}}) {
4189                         print "$line\n";
4190                 }
4191                 print "---\n\n";
4192         }
4193
4194         # write patch
4195         if ($format eq 'html') {
4196                 git_difftree_body(\@difftree, $hash, $hash_parent);
4197                 print "<br/>\n";
4198
4199                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4200                 close $fd;
4201                 print "</div>\n"; # class="page_body"
4202                 git_footer_html();
4203
4204         } elsif ($format eq 'plain') {
4205                 local $/ = undef;
4206                 print <$fd>;
4207                 close $fd
4208                         or print "Reading git-diff-tree failed\n";
4209         }
4210 }
4211
4212 sub git_commitdiff_plain {
4213         git_commitdiff('plain');
4214 }
4215
4216 sub git_history {
4217         if (!defined $hash_base) {
4218                 $hash_base = git_get_head_hash($project);
4219         }
4220         if (!defined $page) {
4221                 $page = 0;
4222         }
4223         my $ftype;
4224         my %co = parse_commit($hash_base);
4225         if (!%co) {
4226                 die_error(undef, "Unknown commit object");
4227         }
4228
4229         my $refs = git_get_references();
4230         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4231
4232         if (!defined $hash && defined $file_name) {
4233                 $hash = git_get_hash_by_path($hash_base, $file_name);
4234         }
4235         if (defined $hash) {
4236                 $ftype = git_get_type($hash);
4237         }
4238
4239         my @commitlist = parse_commits($hash_base, 101, (100 * $page), "--full-history", $file_name);
4240
4241         my $paging_nav = '';
4242         if ($page > 0) {
4243                 $paging_nav .=
4244                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4245                                                file_name=>$file_name)},
4246                                 "first");
4247                 $paging_nav .= " &sdot; " .
4248                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4249                                                file_name=>$file_name, page=>$page-1),
4250                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4251         } else {
4252                 $paging_nav .= "first";
4253                 $paging_nav .= " &sdot; prev";
4254         }
4255         if ($#commitlist >= 100) {
4256                 $paging_nav .= " &sdot; " .
4257                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4258                                                file_name=>$file_name, page=>$page+1),
4259                                  -accesskey => "n", -title => "Alt-n"}, "next");
4260         } else {
4261                 $paging_nav .= " &sdot; next";
4262         }
4263         my $next_link = '';
4264         if ($#commitlist >= 100) {
4265                 $next_link =
4266                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4267                                                file_name=>$file_name, page=>$page+1),
4268                                  -accesskey => "n", -title => "Alt-n"}, "next");
4269         }
4270
4271         git_header_html();
4272         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4273         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4274         git_print_page_path($file_name, $ftype, $hash_base);
4275
4276         git_history_body(\@commitlist, 0, 99,
4277                          $refs, $hash_base, $ftype, $next_link);
4278
4279         git_footer_html();
4280 }
4281
4282 sub git_search {
4283         my ($have_search) = gitweb_check_feature('search');
4284         if (!$have_search) {
4285                 die_error('403 Permission denied', "Permission denied");
4286         }
4287         if (!defined $searchtext) {
4288                 die_error(undef, "Text field empty");
4289         }
4290         if (!defined $hash) {
4291                 $hash = git_get_head_hash($project);
4292         }
4293         my %co = parse_commit($hash);
4294         if (!%co) {
4295                 die_error(undef, "Unknown commit object");
4296         }
4297         if (!defined $page) {
4298                 $page = 0;
4299         }
4300
4301         $searchtype ||= 'commit';
4302         if ($searchtype eq 'pickaxe') {
4303                 # pickaxe may take all resources of your box and run for several minutes
4304                 # with every query - so decide by yourself how public you make this feature
4305                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4306                 if (!$have_pickaxe) {
4307                         die_error('403 Permission denied', "Permission denied");
4308                 }
4309         }
4310
4311         git_header_html();
4312
4313         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4314                 my $greptype;
4315                 if ($searchtype eq 'commit') {
4316                         $greptype = "--grep=";
4317                 } elsif ($searchtype eq 'author') {
4318                         $greptype = "--author=";
4319                 } elsif ($searchtype eq 'committer') {
4320                         $greptype = "--committer=";
4321                 }
4322                 $greptype .= $searchtext;
4323                 my @commitlist = parse_commits($hash, 101, (100 * $page), $greptype);
4324
4325                 my $paging_nav = '';
4326                 if ($page > 0) {
4327                         $paging_nav .=
4328                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4329                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4330                                         "first");
4331                         $paging_nav .= " &sdot; " .
4332                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4333                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4334                                                        page=>$page-1),
4335                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4336                 } else {
4337                         $paging_nav .= "first";
4338                         $paging_nav .= " &sdot; prev";
4339                 }
4340                 if ($#commitlist >= 100) {
4341                         $paging_nav .= " &sdot; " .
4342                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4343                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4344                                                        page=>$page+1),
4345                                          -accesskey => "n", -title => "Alt-n"}, "next");
4346                 } else {
4347                         $paging_nav .= " &sdot; next";
4348                 }
4349                 my $next_link = '';
4350                 if ($#commitlist >= 100) {
4351                         $next_link =
4352                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4353                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4354                                                        page=>$page+1),
4355                                          -accesskey => "n", -title => "Alt-n"}, "next");
4356                 }
4357
4358                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4359                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4360                 git_search_grep_body(\@commitlist, 0, 99, $next_link);
4361         }
4362
4363         if ($searchtype eq 'pickaxe') {
4364                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4365                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4366
4367                 print "<table cellspacing=\"0\">\n";
4368                 my $alternate = 1;
4369                 $/ = "\n";
4370                 my $git_command = git_cmd_str();
4371                 open my $fd, "-|", "$git_command rev-list $hash | " .
4372                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4373                 undef %co;
4374                 my @files;
4375                 while (my $line = <$fd>) {
4376                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4377                                 my %set;
4378                                 $set{'file'} = $6;
4379                                 $set{'from_id'} = $3;
4380                                 $set{'to_id'} = $4;
4381                                 $set{'id'} = $set{'to_id'};
4382                                 if ($set{'id'} =~ m/0{40}/) {
4383                                         $set{'id'} = $set{'from_id'};
4384                                 }
4385                                 if ($set{'id'} =~ m/0{40}/) {
4386                                         next;
4387                                 }
4388                                 push @files, \%set;
4389                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4390                                 if (%co) {
4391                                         if ($alternate) {
4392                                                 print "<tr class=\"dark\">\n";
4393                                         } else {
4394                                                 print "<tr class=\"light\">\n";
4395                                         }
4396                                         $alternate ^= 1;
4397                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4398                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4399                                               "<td>" .
4400                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4401                                                       -class => "list subject"},
4402                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4403                                         while (my $setref = shift @files) {
4404                                                 my %set = %$setref;
4405                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4406                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4407                                                               -class => "list"},
4408                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4409                                                       "<br/>\n";
4410                                         }
4411                                         print "</td>\n" .
4412                                               "<td class=\"link\">" .
4413                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4414                                               " | " .
4415                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4416                                         print "</td>\n" .
4417                                               "</tr>\n";
4418                                 }
4419                                 %co = parse_commit($1);
4420                         }
4421                 }
4422                 close $fd;
4423
4424                 print "</table>\n";
4425         }
4426         git_footer_html();
4427 }
4428
4429 sub git_search_help {
4430         git_header_html();
4431         git_print_page_nav('','', $hash,$hash,$hash);
4432         print <<EOT;
4433 <dl>
4434 <dt><b>commit</b></dt>
4435 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4436 <dt><b>author</b></dt>
4437 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4438 <dt><b>committer</b></dt>
4439 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4440 EOT
4441         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4442         if ($have_pickaxe) {
4443                 print <<EOT;
4444 <dt><b>pickaxe</b></dt>
4445 <dd>All commits that caused the string to appear or disappear from any file (changes that
4446 added, removed or "modified" the string) will be listed. This search can take a while and
4447 takes a lot of strain on the server, so please use it wisely.</dd>
4448 EOT
4449         }
4450         print "</dl>\n";
4451         git_footer_html();
4452 }
4453
4454 sub git_shortlog {
4455         my $head = git_get_head_hash($project);
4456         if (!defined $hash) {
4457                 $hash = $head;
4458         }
4459         if (!defined $page) {
4460                 $page = 0;
4461         }
4462         my $refs = git_get_references();
4463
4464         my @commitlist = parse_commits($hash, 101, (100 * $page));
4465
4466         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, (100 * ($page+1)));
4467         my $next_link = '';
4468         if ($#commitlist >= 100) {
4469                 $next_link =
4470                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4471                                  -accesskey => "n", -title => "Alt-n"}, "next");
4472         }
4473
4474         git_header_html();
4475         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4476         git_print_header_div('summary', $project);
4477
4478         git_shortlog_body(\@commitlist, 0, 99, $refs, $next_link);
4479
4480         git_footer_html();
4481 }
4482
4483 ## ......................................................................
4484 ## feeds (RSS, Atom; OPML)
4485
4486 sub git_feed {
4487         my $format = shift || 'atom';
4488         my ($have_blame) = gitweb_check_feature('blame');
4489
4490         # Atom: http://www.atomenabled.org/developers/syndication/
4491         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4492         if ($format ne 'rss' && $format ne 'atom') {
4493                 die_error(undef, "Unknown web feed format");
4494         }
4495
4496         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4497         my $head = $hash || 'HEAD';
4498         my @commitlist = parse_commits($head, 150);
4499
4500         my %latest_commit;
4501         my %latest_date;
4502         my $content_type = "application/$format+xml";
4503         if (defined $cgi->http('HTTP_ACCEPT') &&
4504                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4505                 # browser (feed reader) prefers text/xml
4506                 $content_type = 'text/xml';
4507         }
4508         if (defined($commitlist[0])) {
4509                 %latest_commit = %{$commitlist[0]};
4510                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4511                 print $cgi->header(
4512                         -type => $content_type,
4513                         -charset => 'utf-8',
4514                         -last_modified => $latest_date{'rfc2822'});
4515         } else {
4516                 print $cgi->header(
4517                         -type => $content_type,
4518                         -charset => 'utf-8');
4519         }
4520
4521         # Optimization: skip generating the body if client asks only
4522         # for Last-Modified date.
4523         return if ($cgi->request_method() eq 'HEAD');
4524
4525         # header variables
4526         my $title = "$site_name - $project/$action";
4527         my $feed_type = 'log';
4528         if (defined $hash) {
4529                 $title .= " - '$hash'";
4530                 $feed_type = 'branch log';
4531                 if (defined $file_name) {
4532                         $title .= " :: $file_name";
4533                         $feed_type = 'history';
4534                 }
4535         } elsif (defined $file_name) {
4536                 $title .= " - $file_name";
4537                 $feed_type = 'history';
4538         }
4539         $title .= " $feed_type";
4540         my $descr = git_get_project_description($project);
4541         if (defined $descr) {
4542                 $descr = esc_html($descr);
4543         } else {
4544                 $descr = "$project " .
4545                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4546                          " feed";
4547         }
4548         my $owner = git_get_project_owner($project);
4549         $owner = esc_html($owner);
4550
4551         #header
4552         my $alt_url;
4553         if (defined $file_name) {
4554                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4555         } elsif (defined $hash) {
4556                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4557         } else {
4558                 $alt_url = href(-full=>1, action=>"summary");
4559         }
4560         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4561         if ($format eq 'rss') {
4562                 print <<XML;
4563 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4564 <channel>
4565 XML
4566                 print "<title>$title</title>\n" .
4567                       "<link>$alt_url</link>\n" .
4568                       "<description>$descr</description>\n" .
4569                       "<language>en</language>\n";
4570         } elsif ($format eq 'atom') {
4571                 print <<XML;
4572 <feed xmlns="http://www.w3.org/2005/Atom">
4573 XML
4574                 print "<title>$title</title>\n" .
4575                       "<subtitle>$descr</subtitle>\n" .
4576                       '<link rel="alternate" type="text/html" href="' .
4577                       $alt_url . '" />' . "\n" .
4578                       '<link rel="self" type="' . $content_type . '" href="' .
4579                       $cgi->self_url() . '" />' . "\n" .
4580                       "<id>" . href(-full=>1) . "</id>\n" .
4581                       # use project owner for feed author
4582                       "<author><name>$owner</name></author>\n";
4583                 if (defined $favicon) {
4584                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4585                 }
4586                 if (defined $logo_url) {
4587                         # not twice as wide as tall: 72 x 27 pixels
4588                         print "<logo>" . esc_url($logo) . "</logo>\n";
4589                 }
4590                 if (! %latest_date) {
4591                         # dummy date to keep the feed valid until commits trickle in:
4592                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4593                 } else {
4594                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4595                 }
4596         }
4597
4598         # contents
4599         for (my $i = 0; $i <= $#commitlist; $i++) {
4600                 my %co = %{$commitlist[$i]};
4601                 my $commit = $co{'id'};
4602                 # we read 150, we always show 30 and the ones more recent than 48 hours
4603                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4604                         last;
4605                 }
4606                 my %cd = parse_date($co{'author_epoch'});
4607
4608                 # get list of changed files
4609                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4610                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4611                         or next;
4612                 my @difftree = map { chomp; $_ } <$fd>;
4613                 close $fd
4614                         or next;
4615
4616                 # print element (entry, item)
4617                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4618                 if ($format eq 'rss') {
4619                         print "<item>\n" .
4620                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4621                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4622                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4623                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4624                               "<link>$co_url</link>\n" .
4625                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4626                               "<content:encoded>" .
4627                               "<![CDATA[\n";
4628                 } elsif ($format eq 'atom') {
4629                         print "<entry>\n" .
4630                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4631                               "<updated>$cd{'iso-8601'}</updated>\n" .
4632                               "<author>\n" .
4633                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4634                         if ($co{'author_email'}) {
4635                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4636                         }
4637                         print "</author>\n" .
4638                               # use committer for contributor
4639                               "<contributor>\n" .
4640                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4641                         if ($co{'committer_email'}) {
4642                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4643                         }
4644                         print "</contributor>\n" .
4645                               "<published>$cd{'iso-8601'}</published>\n" .
4646                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4647                               "<id>$co_url</id>\n" .
4648                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4649                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4650                 }
4651                 my $comment = $co{'comment'};
4652                 print "<pre>\n";
4653                 foreach my $line (@$comment) {
4654                         $line = esc_html($line);
4655                         print "$line\n";
4656                 }
4657                 print "</pre><ul>\n";
4658                 foreach my $difftree_line (@difftree) {
4659                         my %difftree = parse_difftree_raw_line($difftree_line);
4660                         next if !$difftree{'from_id'};
4661
4662                         my $file = $difftree{'file'} || $difftree{'to_file'};
4663
4664                         print "<li>" .
4665                               "[" .
4666                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4667                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4668                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4669                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4670                                       -title => "diff"}, 'D');
4671                         if ($have_blame) {
4672                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4673                                                              file_name=>$file, hash_base=>$commit),
4674                                               -title => "blame"}, 'B');
4675                         }
4676                         # if this is not a feed of a file history
4677                         if (!defined $file_name || $file_name ne $file) {
4678                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4679                                                              file_name=>$file, hash=>$commit),
4680                                               -title => "history"}, 'H');
4681                         }
4682                         $file = esc_path($file);
4683                         print "] ".
4684                               "$file</li>\n";
4685                 }
4686                 if ($format eq 'rss') {
4687                         print "</ul>]]>\n" .
4688                               "</content:encoded>\n" .
4689                               "</item>\n";
4690                 } elsif ($format eq 'atom') {
4691                         print "</ul>\n</div>\n" .
4692                               "</content>\n" .
4693                               "</entry>\n";
4694                 }
4695         }
4696
4697         # end of feed
4698         if ($format eq 'rss') {
4699                 print "</channel>\n</rss>\n";
4700         }       elsif ($format eq 'atom') {
4701                 print "</feed>\n";
4702         }
4703 }
4704
4705 sub git_rss {
4706         git_feed('rss');
4707 }
4708
4709 sub git_atom {
4710         git_feed('atom');
4711 }
4712
4713 sub git_opml {
4714         my @list = git_get_projects_list();
4715
4716         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4717         print <<XML;
4718 <?xml version="1.0" encoding="utf-8"?>
4719 <opml version="1.0">
4720 <head>
4721   <title>$site_name OPML Export</title>
4722 </head>
4723 <body>
4724 <outline text="git RSS feeds">
4725 XML
4726
4727         foreach my $pr (@list) {
4728                 my %proj = %$pr;
4729                 my $head = git_get_head_hash($proj{'path'});
4730                 if (!defined $head) {
4731                         next;
4732                 }
4733                 $git_dir = "$projectroot/$proj{'path'}";
4734                 my %co = parse_commit($head);
4735                 if (!%co) {
4736                         next;
4737                 }
4738
4739                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4740                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4741                 my $html = "$my_url?p=$proj{'path'};a=summary";
4742                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4743         }
4744         print <<XML;
4745 </outline>
4746 </body>
4747 </opml>
4748 XML
4749 }