gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++"
  43                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  44
  45 # filename of html text to include at top of each page
  46 our $site_header = "++GITWEB_SITE_HEADER++";
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49 # filename of html text to include at bottom of each page
  50 our $site_footer = "++GITWEB_SITE_FOOTER++";
  51
  52 # URI of stylesheets
  53 our @stylesheets = ("++GITWEB_CSS++");
  54 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55 our $stylesheet = undef;
  56 # URI of GIT logo (72x27 size)
  57 our $logo = "++GITWEB_LOGO++";
  58 # URI of GIT favicon, assumed to be image/png type
  59 our $favicon = "++GITWEB_FAVICON++";
  60
  61 # URI and label (title) of GIT logo link
  62 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  63 #our $logo_label = "git documentation";
  64 our $logo_url = "http://git.or.cz/";
  65 our $logo_label = "git homepage";
  66
  67 # source of projects list
  68 our $projects_list = "++GITWEB_LIST++";
  69
  70 # show repository only if this file exists
  71 # (only effective if this variable evaluates to true)
  72 our $export_ok = "++GITWEB_EXPORT_OK++";
  73
  74 # only allow viewing of repositories also shown on the overview page
  75 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  76
  77 # list of git base URLs used for URL to where fetch project from,
  78 # i.e. full URL is "$git_base_url/$project"
  79 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  80
  81 # default blob_plain mimetype and default charset for text/plain blob
  82 our $default_blob_plain_mimetype = 'text/plain';
  83 our $default_text_plain_charset  = undef;
  84
  85 # file to use for guessing MIME types before trying /etc/mime.types
  86 # (relative to the current git repository)
  87 our $mimetypes_file = undef;
  88
  89 # You define site-wide feature defaults here; override them with
  90 # $GITWEB_CONFIG as necessary.
  91 our %feature = (
  92         # feature => {
  93         #       'sub' => feature-sub (subroutine),
  94         #       'override' => allow-override (boolean),
  95         #       'default' => [ default options...] (array reference)}
  96         #
  97         # if feature is overridable (it means that allow-override has true value,
  98         # then feature-sub will be called with default options as parameters;
  99         # return value of feature-sub indicates if to enable specified feature
 100         #
 101         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 102
 103         # Enable the 'blame' blob view, showing the last commit that modified
 104         # each line in the file. This can be very CPU-intensive.
 105
 106         # To enable system wide have in $GITWEB_CONFIG
 107         # $feature{'blame'}{'default'} = [1];
 108         # To have project specific config enable override in $GITWEB_CONFIG
 109         # $feature{'blame'}{'override'} = 1;
 110         # and in project config gitweb.blame = 0|1;
 111         'blame' => {
 112                 'sub' => \&feature_blame,
 113                 'override' => 0,
 114                 'default' => [0]},
 115
 116         # Enable the 'snapshot' link, providing a compressed tarball of any
 117         # tree. This can potentially generate high traffic if you have large
 118         # project.
 119
 120         # To disable system wide have in $GITWEB_CONFIG
 121         # $feature{'snapshot'}{'default'} = [undef];
 122         # To have project specific config enable override in $GITWEB_CONFIG
 123         # $feature{'snapshot'}{'override'} = 1;
 124         # and in project config gitweb.snapshot = none|gzip|bzip2;
 125         'snapshot' => {
 126                 'sub' => \&feature_snapshot,
 127                 'override' => 0,
 128                 #         => [content-encoding, suffix, program]
 129                 'default' => ['x-gzip', 'gz', 'gzip']},
 130
 131         # Enable text search, which will list the commits which match author,
 132         # committer or commit text to a given string.  Enabled by default.
 133         'search' => {
 134                 'override' => 0,
 135                 'default' => [1]},
 136
 137         # Enable the pickaxe search, which will list the commits that modified
 138         # a given string in a file. This can be practical and quite faster
 139         # alternative to 'blame', but still potentially CPU-intensive.
 140
 141         # To enable system wide have in $GITWEB_CONFIG
 142         # $feature{'pickaxe'}{'default'} = [1];
 143         # To have project specific config enable override in $GITWEB_CONFIG
 144         # $feature{'pickaxe'}{'override'} = 1;
 145         # and in project config gitweb.pickaxe = 0|1;
 146         'pickaxe' => {
 147                 'sub' => \&feature_pickaxe,
 148                 'override' => 0,
 149                 'default' => [1]},
 150
 151         # Make gitweb use an alternative format of the URLs which can be
 152         # more readable and natural-looking: project name is embedded
 153         # directly in the path and the query string contains other
 154         # auxiliary information. All gitweb installations recognize
 155         # URL in either format; this configures in which formats gitweb
 156         # generates links.
 157
 158         # To enable system wide have in $GITWEB_CONFIG
 159         # $feature{'pathinfo'}{'default'} = [1];
 160         # Project specific override is not supported.
 161
 162         # Note that you will need to change the default location of CSS,
 163         # favicon, logo and possibly other files to an absolute URL. Also,
 164         # if gitweb.cgi serves as your indexfile, you will need to force
 165         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 166         'pathinfo' => {
 167                 'override' => 0,
 168                 'default' => [0]},
 169
 170         # Make gitweb consider projects in project root subdirectories
 171         # to be forks of existing projects. Given project $projname.git,
 172         # projects matching $projname/*.git will not be shown in the main
 173         # projects list, instead a '+' mark will be added to $projname
 174         # there and a 'forks' view will be enabled for the project, listing
 175         # all the forks. This feature is supported only if project list
 176         # is taken from a directory, not file.
 177
 178         # To enable system wide have in $GITWEB_CONFIG
 179         # $feature{'forks'}{'default'} = [1];
 180         # Project specific override is not supported.
 181         'forks' => {
 182                 'override' => 0,
 183                 'default' => [0]},
 184 );
 185
 186 sub gitweb_check_feature {
 187         my ($name) = @_;
 188         return unless exists $feature{$name};
 189         my ($sub, $override, @defaults) = (
 190                 $feature{$name}{'sub'},
 191                 $feature{$name}{'override'},
 192                 @{$feature{$name}{'default'}});
 193         if (!$override) { return @defaults; }
 194         if (!defined $sub) {
 195                 warn "feature $name is not overrideable";
 196                 return @defaults;
 197         }
 198         return $sub->(@defaults);
 199 }
 200
 201 sub feature_blame {
 202         my ($val) = git_get_project_config('blame', '--bool');
 203
 204         if ($val eq 'true') {
 205                 return 1;
 206         } elsif ($val eq 'false') {
 207                 return 0;
 208         }
 209
 210         return $_[0];
 211 }
 212
 213 sub feature_snapshot {
 214         my ($ctype, $suffix, $command) = @_;
 215
 216         my ($val) = git_get_project_config('snapshot');
 217
 218         if ($val eq 'gzip') {
 219                 return ('x-gzip', 'gz', 'gzip');
 220         } elsif ($val eq 'bzip2') {
 221                 return ('x-bzip2', 'bz2', 'bzip2');
 222         } elsif ($val eq 'none') {
 223                 return ();
 224         }
 225
 226         return ($ctype, $suffix, $command);
 227 }
 228
 229 sub gitweb_have_snapshot {
 230         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 231         my $have_snapshot = (defined $ctype && defined $suffix);
 232
 233         return $have_snapshot;
 234 }
 235
 236 sub feature_pickaxe {
 237         my ($val) = git_get_project_config('pickaxe', '--bool');
 238
 239         if ($val eq 'true') {
 240                 return (1);
 241         } elsif ($val eq 'false') {
 242                 return (0);
 243         }
 244
 245         return ($_[0]);
 246 }
 247
 248 # checking HEAD file with -e is fragile if the repository was
 249 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 250 # and then pruned.
 251 sub check_head_link {
 252         my ($dir) = @_;
 253         my $headfile = "$dir/HEAD";
 254         return ((-e $headfile) ||
 255                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 256 }
 257
 258 sub check_export_ok {
 259         my ($dir) = @_;
 260         return (check_head_link($dir) &&
 261                 (!$export_ok || -e "$dir/$export_ok"));
 262 }
 263
 264 # rename detection options for git-diff and git-diff-tree
 265 # - default is '-M', with the cost proportional to
 266 #   (number of removed files) * (number of new files).
 267 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 268 #   (number of changed files + number of removed files) * (number of new files)
 269 # - even more costly is '-C', '--find-copies-harder' with cost
 270 #   (number of files in the original tree) * (number of new files)
 271 # - one might want to include '-B' option, e.g. '-B', '-M'
 272 our @diff_opts = ('-M'); # taken from git_commit
 273
 274 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 275 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 276
 277 # version of the core git binary
 278 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 279
 280 $projects_list ||= $projectroot;
 281
 282 # ======================================================================
 283 # input validation and dispatch
 284 our $action = $cgi->param('a');
 285 if (defined $action) {
 286         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 287                 die_error(undef, "Invalid action parameter");
 288         }
 289 }
 290
 291 # parameters which are pathnames
 292 our $project = $cgi->param('p');
 293 if (defined $project) {
 294         if (!validate_pathname($project) ||
 295             !(-d "$projectroot/$project") ||
 296             !check_head_link("$projectroot/$project") ||
 297             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 298             ($strict_export && !project_in_list($project))) {
 299                 undef $project;
 300                 die_error(undef, "No such project");
 301         }
 302 }
 303
 304 our $file_name = $cgi->param('f');
 305 if (defined $file_name) {
 306         if (!validate_pathname($file_name)) {
 307                 die_error(undef, "Invalid file parameter");
 308         }
 309 }
 310
 311 our $file_parent = $cgi->param('fp');
 312 if (defined $file_parent) {
 313         if (!validate_pathname($file_parent)) {
 314                 die_error(undef, "Invalid file parent parameter");
 315         }
 316 }
 317
 318 # parameters which are refnames
 319 our $hash = $cgi->param('h');
 320 if (defined $hash) {
 321         if (!validate_refname($hash)) {
 322                 die_error(undef, "Invalid hash parameter");
 323         }
 324 }
 325
 326 our $hash_parent = $cgi->param('hp');
 327 if (defined $hash_parent) {
 328         if (!validate_refname($hash_parent)) {
 329                 die_error(undef, "Invalid hash parent parameter");
 330         }
 331 }
 332
 333 our $hash_base = $cgi->param('hb');
 334 if (defined $hash_base) {
 335         if (!validate_refname($hash_base)) {
 336                 die_error(undef, "Invalid hash base parameter");
 337         }
 338 }
 339
 340 our $hash_parent_base = $cgi->param('hpb');
 341 if (defined $hash_parent_base) {
 342         if (!validate_refname($hash_parent_base)) {
 343                 die_error(undef, "Invalid hash parent base parameter");
 344         }
 345 }
 346
 347 # other parameters
 348 our $page = $cgi->param('pg');
 349 if (defined $page) {
 350         if ($page =~ m/[^0-9]/) {
 351                 die_error(undef, "Invalid page parameter");
 352         }
 353 }
 354
 355 our $searchtext = $cgi->param('s');
 356 if (defined $searchtext) {
 357         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 358                 die_error(undef, "Invalid search parameter");
 359         }
 360         if (length($searchtext) < 2) {
 361                 die_error(undef, "At least two characters are required for search parameter");
 362         }
 363         $searchtext = quotemeta $searchtext;
 364 }
 365
 366 our $searchtype = $cgi->param('st');
 367 if (defined $searchtype) {
 368         if ($searchtype =~ m/[^a-z]/) {
 369                 die_error(undef, "Invalid searchtype parameter");
 370         }
 371 }
 372
 373 # now read PATH_INFO and use it as alternative to parameters
 374 sub evaluate_path_info {
 375         return if defined $project;
 376         my $path_info = $ENV{"PATH_INFO"};
 377         return if !$path_info;
 378         $path_info =~ s,^/+,,;
 379         return if !$path_info;
 380         # find which part of PATH_INFO is project
 381         $project = $path_info;
 382         $project =~ s,/+$,,;
 383         while ($project && !check_head_link("$projectroot/$project")) {
 384                 $project =~ s,/*[^/]*$,,;
 385         }
 386         # validate project
 387         $project = validate_pathname($project);
 388         if (!$project ||
 389             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 390             ($strict_export && !project_in_list($project))) {
 391                 undef $project;
 392                 return;
 393         }
 394         # do not change any parameters if an action is given using the query string
 395         return if $action;
 396         $path_info =~ s,^$project/*,,;
 397         my ($refname, $pathname) = split(/:/, $path_info, 2);
 398         if (defined $pathname) {
 399                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 400                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 401                 $pathname =~ s,^/+,,;
 402                 if (!$pathname || substr($pathname, -1) eq "/") {
 403                         $action  ||= "tree";
 404                         $pathname =~ s,/$,,;
 405                 } else {
 406                         $action  ||= "blob_plain";
 407                 }
 408                 $hash_base ||= validate_refname($refname);
 409                 $file_name ||= validate_pathname($pathname);
 410         } elsif (defined $refname) {
 411                 # we got "project.git/branch"
 412                 $action ||= "shortlog";
 413                 $hash   ||= validate_refname($refname);
 414         }
 415 }
 416 evaluate_path_info();
 417
 418 # path to the current git repository
 419 our $git_dir;
 420 $git_dir = "$projectroot/$project" if $project;
 421
 422 # dispatch
 423 my %actions = (
 424         "blame" => \&git_blame2,
 425         "blobdiff" => \&git_blobdiff,
 426         "blobdiff_plain" => \&git_blobdiff_plain,
 427         "blob" => \&git_blob,
 428         "blob_plain" => \&git_blob_plain,
 429         "commitdiff" => \&git_commitdiff,
 430         "commitdiff_plain" => \&git_commitdiff_plain,
 431         "commit" => \&git_commit,
 432         "forks" => \&git_forks,
 433         "heads" => \&git_heads,
 434         "history" => \&git_history,
 435         "log" => \&git_log,
 436         "rss" => \&git_rss,
 437         "atom" => \&git_atom,
 438         "search" => \&git_search,
 439         "search_help" => \&git_search_help,
 440         "shortlog" => \&git_shortlog,
 441         "summary" => \&git_summary,
 442         "tag" => \&git_tag,
 443         "tags" => \&git_tags,
 444         "tree" => \&git_tree,
 445         "snapshot" => \&git_snapshot,
 446         "object" => \&git_object,
 447         # those below don't need $project
 448         "opml" => \&git_opml,
 449         "project_list" => \&git_project_list,
 450         "project_index" => \&git_project_index,
 451 );
 452
 453 if (defined $project) {
 454         $action ||= 'summary';
 455 } else {
 456         $action ||= 'project_list';
 457 }
 458 if (!defined($actions{$action})) {
 459         die_error(undef, "Unknown action");
 460 }
 461 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 462     !$project) {
 463         die_error(undef, "Project needed");
 464 }
 465 $actions{$action}->();
 466 exit;
 467
 468 ## ======================================================================
 469 ## action links
 470
 471 sub href(%) {
 472         my %params = @_;
 473         # default is to use -absolute url() i.e. $my_uri
 474         my $href = $params{-full} ? $my_url : $my_uri;
 475
 476         # XXX: Warning: If you touch this, check the search form for updating,
 477         # too.
 478
 479         my @mapping = (
 480                 project => "p",
 481                 action => "a",
 482                 file_name => "f",
 483                 file_parent => "fp",
 484                 hash => "h",
 485                 hash_parent => "hp",
 486                 hash_base => "hb",
 487                 hash_parent_base => "hpb",
 488                 page => "pg",
 489                 order => "o",
 490                 searchtext => "s",
 491                 searchtype => "st",
 492         );
 493         my %mapping = @mapping;
 494
 495         $params{'project'} = $project unless exists $params{'project'};
 496
 497         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 498         if ($use_pathinfo) {
 499                 # use PATH_INFO for project name
 500                 $href .= "/$params{'project'}" if defined $params{'project'};
 501                 delete $params{'project'};
 502
 503                 # Summary just uses the project path URL
 504                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 505                         delete $params{'action'};
 506                 }
 507         }
 508
 509         # now encode the parameters explicitly
 510         my @result = ();
 511         for (my $i = 0; $i < @mapping; $i += 2) {
 512                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 513                 if (defined $params{$name}) {
 514                         push @result, $symbol . "=" . esc_param($params{$name});
 515                 }
 516         }
 517         $href .= "?" . join(';', @result) if scalar @result;
 518
 519         return $href;
 520 }
 521
 522
 523 ## ======================================================================
 524 ## validation, quoting/unquoting and escaping
 525
 526 sub validate_pathname {
 527         my $input = shift || return undef;
 528
 529         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 530         # at the beginning, at the end, and between slashes.
 531         # also this catches doubled slashes
 532         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 533                 return undef;
 534         }
 535         # no null characters
 536         if ($input =~ m!\0!) {
 537                 return undef;
 538         }
 539         return $input;
 540 }
 541
 542 sub validate_refname {
 543         my $input = shift || return undef;
 544
 545         # textual hashes are O.K.
 546         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 547                 return $input;
 548         }
 549         # it must be correct pathname
 550         $input = validate_pathname($input)
 551                 or return undef;
 552         # restrictions on ref name according to git-check-ref-format
 553         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 554                 return undef;
 555         }
 556         return $input;
 557 }
 558
 559 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 560 sub to_utf8 {
 561         my $str = shift;
 562         return decode("utf8", $str, Encode::FB_DEFAULT);
 563 }
 564
 565 # quote unsafe chars, but keep the slash, even when it's not
 566 # correct, but quoted slashes look too horrible in bookmarks
 567 sub esc_param {
 568         my $str = shift;
 569         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 570         $str =~ s/\+/%2B/g;
 571         $str =~ s/ /\+/g;
 572         return $str;
 573 }
 574
 575 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 576 sub esc_url {
 577         my $str = shift;
 578         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 579         $str =~ s/\+/%2B/g;
 580         $str =~ s/ /\+/g;
 581         return $str;
 582 }
 583
 584 # replace invalid utf8 character with SUBSTITUTION sequence
 585 sub esc_html ($;%) {
 586         my $str = shift;
 587         my %opts = @_;
 588
 589         $str = to_utf8($str);
 590         $str = escapeHTML($str);
 591         if ($opts{'-nbsp'}) {
 592                 $str =~ s/ /&nbsp;/g;
 593         }
 594         $str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
 595         return $str;
 596 }
 597
 598 # quote control characters and escape filename to HTML
 599 sub esc_path {
 600         my $str = shift;
 601         my %opts = @_;
 602
 603         $str = to_utf8($str);
 604         $str = escapeHTML($str);
 605         if ($opts{'-nbsp'}) {
 606                 $str =~ s/ /&nbsp;/g;
 607         }
 608         $str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
 609         return $str;
 610 }
 611
 612 # Make control characters "printable", using character escape codes (CEC)
 613 sub quot_cec {
 614         my $cntrl = shift;
 615         my %es = ( # character escape codes, aka escape sequences
 616                    "\t" => '\t',   # tab            (HT)
 617                    "\n" => '\n',   # line feed      (LF)
 618                    "\r" => '\r',   # carrige return (CR)
 619                    "\f" => '\f',   # form feed      (FF)
 620                    "\b" => '\b',   # backspace      (BS)
 621                    "\a" => '\a',   # alarm (bell)   (BEL)
 622                    "\e" => '\e',   # escape         (ESC)
 623                    "\013" => '\v', # vertical tab   (VT)
 624                    "\000" => '\0', # nul character  (NUL)
 625                    );
 626         my $chr = ( (exists $es{$cntrl})
 627                     ? $es{$cntrl}
 628                     : sprintf('\%03o', ord($cntrl)) );
 629         return "<span class=\"cntrl\">$chr</span>";
 630 }
 631
 632 # Alternatively use unicode control pictures codepoints,
 633 # Unicode "printable representation" (PR)
 634 sub quot_upr {
 635         my $cntrl = shift;
 636         my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
 637         return "<span class=\"cntrl\">$chr</span>";
 638 }
 639
 640 # git may return quoted and escaped filenames
 641 sub unquote {
 642         my $str = shift;
 643
 644         sub unq {
 645                 my $seq = shift;
 646                 my %es = ( # character escape codes, aka escape sequences
 647                         't' => "\t",   # tab            (HT, TAB)
 648                         'n' => "\n",   # newline        (NL)
 649                         'r' => "\r",   # return         (CR)
 650                         'f' => "\f",   # form feed      (FF)
 651                         'b' => "\b",   # backspace      (BS)
 652                         'a' => "\a",   # alarm (bell)   (BEL)
 653                         'e' => "\e",   # escape         (ESC)
 654                         'v' => "\013", # vertical tab   (VT)
 655                 );
 656
 657                 if ($seq =~ m/^[0-7]{1,3}$/) {
 658                         # octal char sequence
 659                         return chr(oct($seq));
 660                 } elsif (exists $es{$seq}) {
 661                         # C escape sequence, aka character escape code
 662                         return $es{$seq}
 663                 }
 664                 # quoted ordinary character
 665                 return $seq;
 666         }
 667
 668         if ($str =~ m/^"(.*)"$/) {
 669                 # needs unquoting
 670                 $str = $1;
 671                 $str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
 672         }
 673         return $str;
 674 }
 675
 676 # escape tabs (convert tabs to spaces)
 677 sub untabify {
 678         my $line = shift;
 679
 680         while ((my $pos = index($line, "\t")) != -1) {
 681                 if (my $count = (8 - ($pos % 8))) {
 682                         my $spaces = ' ' x $count;
 683                         $line =~ s/\t/$spaces/;
 684                 }
 685         }
 686
 687         return $line;
 688 }
 689
 690 sub project_in_list {
 691         my $project = shift;
 692         my @list = git_get_projects_list();
 693         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 694 }
 695
 696 ## ----------------------------------------------------------------------
 697 ## HTML aware string manipulation
 698
 699 sub chop_str {
 700         my $str = shift;
 701         my $len = shift;
 702         my $add_len = shift || 10;
 703
 704         # allow only $len chars, but don't cut a word if it would fit in $add_len
 705         # if it doesn't fit, cut it if it's still longer than the dots we would add
 706         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 707         my $body = $1;
 708         my $tail = $2;
 709         if (length($tail) > 4) {
 710                 $tail = " ...";
 711                 $body =~ s/&[^;]*$//; # remove chopped character entities
 712         }
 713         return "$body$tail";
 714 }
 715
 716 ## ----------------------------------------------------------------------
 717 ## functions returning short strings
 718
 719 # CSS class for given age value (in seconds)
 720 sub age_class {
 721         my $age = shift;
 722
 723         if ($age < 60*60*2) {
 724                 return "age0";
 725         } elsif ($age < 60*60*24*2) {
 726                 return "age1";
 727         } else {
 728                 return "age2";
 729         }
 730 }
 731
 732 # convert age in seconds to "nn units ago" string
 733 sub age_string {
 734         my $age = shift;
 735         my $age_str;
 736
 737         if ($age > 60*60*24*365*2) {
 738                 $age_str = (int $age/60/60/24/365);
 739                 $age_str .= " years ago";
 740         } elsif ($age > 60*60*24*(365/12)*2) {
 741                 $age_str = int $age/60/60/24/(365/12);
 742                 $age_str .= " months ago";
 743         } elsif ($age > 60*60*24*7*2) {
 744                 $age_str = int $age/60/60/24/7;
 745                 $age_str .= " weeks ago";
 746         } elsif ($age > 60*60*24*2) {
 747                 $age_str = int $age/60/60/24;
 748                 $age_str .= " days ago";
 749         } elsif ($age > 60*60*2) {
 750                 $age_str = int $age/60/60;
 751                 $age_str .= " hours ago";
 752         } elsif ($age > 60*2) {
 753                 $age_str = int $age/60;
 754                 $age_str .= " min ago";
 755         } elsif ($age > 2) {
 756                 $age_str = int $age;
 757                 $age_str .= " sec ago";
 758         } else {
 759                 $age_str .= " right now";
 760         }
 761         return $age_str;
 762 }
 763
 764 # convert file mode in octal to symbolic file mode string
 765 sub mode_str {
 766         my $mode = oct shift;
 767
 768         if (S_ISDIR($mode & S_IFMT)) {
 769                 return 'drwxr-xr-x';
 770         } elsif (S_ISLNK($mode)) {
 771                 return 'lrwxrwxrwx';
 772         } elsif (S_ISREG($mode)) {
 773                 # git cares only about the executable bit
 774                 if ($mode & S_IXUSR) {
 775                         return '-rwxr-xr-x';
 776                 } else {
 777                         return '-rw-r--r--';
 778                 };
 779         } else {
 780                 return '----------';
 781         }
 782 }
 783
 784 # convert file mode in octal to file type string
 785 sub file_type {
 786         my $mode = shift;
 787
 788         if ($mode !~ m/^[0-7]+$/) {
 789                 return $mode;
 790         } else {
 791                 $mode = oct $mode;
 792         }
 793
 794         if (S_ISDIR($mode & S_IFMT)) {
 795                 return "directory";
 796         } elsif (S_ISLNK($mode)) {
 797                 return "symlink";
 798         } elsif (S_ISREG($mode)) {
 799                 return "file";
 800         } else {
 801                 return "unknown";
 802         }
 803 }
 804
 805 # convert file mode in octal to file type description string
 806 sub file_type_long {
 807         my $mode = shift;
 808
 809         if ($mode !~ m/^[0-7]+$/) {
 810                 return $mode;
 811         } else {
 812                 $mode = oct $mode;
 813         }
 814
 815         if (S_ISDIR($mode & S_IFMT)) {
 816                 return "directory";
 817         } elsif (S_ISLNK($mode)) {
 818                 return "symlink";
 819         } elsif (S_ISREG($mode)) {
 820                 if ($mode & S_IXUSR) {
 821                         return "executable";
 822                 } else {
 823                         return "file";
 824                 };
 825         } else {
 826                 return "unknown";
 827         }
 828 }
 829
 830
 831 ## ----------------------------------------------------------------------
 832 ## functions returning short HTML fragments, or transforming HTML fragments
 833 ## which don't beling to other sections
 834
 835 # format line of commit message.
 836 sub format_log_line_html {
 837         my $line = shift;
 838
 839         $line = esc_html($line, -nbsp=>1);
 840         if ($line =~ m/([0-9a-fA-F]{8,40})/) {
 841                 my $hash_text = $1;
 842                 my $link =
 843                         $cgi->a({-href => href(action=>"object", hash=>$hash_text),
 844                                 -class => "text"}, $hash_text);
 845                 $line =~ s/$hash_text/$link/;
 846         }
 847         return $line;
 848 }
 849
 850 # format marker of refs pointing to given object
 851 sub format_ref_marker {
 852         my ($refs, $id) = @_;
 853         my $markers = '';
 854
 855         if (defined $refs->{$id}) {
 856                 foreach my $ref (@{$refs->{$id}}) {
 857                         my ($type, $name) = qw();
 858                         # e.g. tags/v2.6.11 or heads/next
 859                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 860                                 $type = $1;
 861                                 $name = $2;
 862                         } else {
 863                                 $type = "ref";
 864                                 $name = $ref;
 865                         }
 866
 867                         $markers .= " <span class=\"$type\" title=\"$ref\">" .
 868                                     esc_html($name) . "</span>";
 869                 }
 870         }
 871
 872         if ($markers) {
 873                 return ' <span class="refs">'. $markers . '</span>';
 874         } else {
 875                 return "";
 876         }
 877 }
 878
 879 # format, perhaps shortened and with markers, title line
 880 sub format_subject_html {
 881         my ($long, $short, $href, $extra) = @_;
 882         $extra = '' unless defined($extra);
 883
 884         if (length($short) < length($long)) {
 885                 return $cgi->a({-href => $href, -class => "list subject",
 886                                 -title => to_utf8($long)},
 887                        esc_html($short) . $extra);
 888         } else {
 889                 return $cgi->a({-href => $href, -class => "list subject"},
 890                        esc_html($long)  . $extra);
 891         }
 892 }
 893
 894 # format patch (diff) line (rather not to be used for diff headers)
 895 sub format_diff_line {
 896         my $line = shift;
 897         my ($from, $to) = @_;
 898         my $char = substr($line, 0, 1);
 899         my $diff_class = "";
 900
 901         chomp $line;
 902
 903         if ($char eq '+') {
 904                 $diff_class = " add";
 905         } elsif ($char eq "-") {
 906                 $diff_class = " rem";
 907         } elsif ($char eq "@") {
 908                 $diff_class = " chunk_header";
 909         } elsif ($char eq "\\") {
 910                 $diff_class = " incomplete";
 911         }
 912         $line = untabify($line);
 913         if ($from && $to && $line =~ m/^\@{2} /) {
 914                 my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
 915                         $line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
 916
 917                 $from_lines = 0 unless defined $from_lines;
 918                 $to_lines   = 0 unless defined $to_lines;
 919
 920                 if ($from->{'href'}) {
 921                         $from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
 922                                              -class=>"list"}, $from_text);
 923                 }
 924                 if ($to->{'href'}) {
 925                         $to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
 926                                              -class=>"list"}, $to_text);
 927                 }
 928                 $line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
 929                         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
 930                 return "<div class=\"diff$diff_class\">$line</div>\n";
 931         }
 932         return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
 933 }
 934
 935 ## ----------------------------------------------------------------------
 936 ## git utility subroutines, invoking git commands
 937
 938 # returns path to the core git executable and the --git-dir parameter as list
 939 sub git_cmd {
 940         return $GIT, '--git-dir='.$git_dir;
 941 }
 942
 943 # returns path to the core git executable and the --git-dir parameter as string
 944 sub git_cmd_str {
 945         return join(' ', git_cmd());
 946 }
 947
 948 # get HEAD ref of given project as hash
 949 sub git_get_head_hash {
 950         my $project = shift;
 951         my $o_git_dir = $git_dir;
 952         my $retval = undef;
 953         $git_dir = "$projectroot/$project";
 954         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 955                 my $head = <$fd>;
 956                 close $fd;
 957                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 958                         $retval = $1;
 959                 }
 960         }
 961         if (defined $o_git_dir) {
 962                 $git_dir = $o_git_dir;
 963         }
 964         return $retval;
 965 }
 966
 967 # get type of given object
 968 sub git_get_type {
 969         my $hash = shift;
 970
 971         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 972         my $type = <$fd>;
 973         close $fd or return;
 974         chomp $type;
 975         return $type;
 976 }
 977
 978 sub git_get_project_config {
 979         my ($key, $type) = @_;
 980
 981         return unless ($key);
 982         $key =~ s/^gitweb\.//;
 983         return if ($key =~ m/\W/);
 984
 985         my @x = (git_cmd(), 'repo-config');
 986         if (defined $type) { push @x, $type; }
 987         push @x, "--get";
 988         push @x, "gitweb.$key";
 989         my $val = qx(@x);
 990         chomp $val;
 991         return ($val);
 992 }
 993
 994 # get hash of given path at given ref
 995 sub git_get_hash_by_path {
 996         my $base = shift;
 997         my $path = shift || return undef;
 998         my $type = shift;
 999
1000         $path =~ s,/+$,,;
1001
1002         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
1003                 or die_error(undef, "Open git-ls-tree failed");
1004         my $line = <$fd>;
1005         close $fd or return undef;
1006
1007         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1008         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
1009         if (defined $type && $type ne $2) {
1010                 # type doesn't match
1011                 return undef;
1012         }
1013         return $3;
1014 }
1015
1016 ## ......................................................................
1017 ## git utility functions, directly accessing git repository
1018
1019 sub git_get_project_description {
1020         my $path = shift;
1021
1022         open my $fd, "$projectroot/$path/description" or return undef;
1023         my $descr = <$fd>;
1024         close $fd;
1025         chomp $descr;
1026         return $descr;
1027 }
1028
1029 sub git_get_project_url_list {
1030         my $path = shift;
1031
1032         open my $fd, "$projectroot/$path/cloneurl" or return;
1033         my @git_project_url_list = map { chomp; $_ } <$fd>;
1034         close $fd;
1035
1036         return wantarray ? @git_project_url_list : \@git_project_url_list;
1037 }
1038
1039 sub git_get_projects_list {
1040         my ($filter) = @_;
1041         my @list;
1042
1043         $filter ||= '';
1044         $filter =~ s/\.git$//;
1045
1046         if (-d $projects_list) {
1047                 # search in directory
1048                 my $dir = $projects_list . ($filter ? "/$filter" : '');
1049                 # remove the trailing "/"
1050                 $dir =~ s!/+$!!;
1051                 my $pfxlen = length("$dir");
1052
1053                 my ($check_forks) = gitweb_check_feature('forks');
1054
1055                 File::Find::find({
1056                         follow_fast => 1, # follow symbolic links
1057                         dangling_symlinks => 0, # ignore dangling symlinks, silently
1058                         wanted => sub {
1059                                 # skip project-list toplevel, if we get it.
1060                                 return if (m!^[/.]$!);
1061                                 # only directories can be git repositories
1062                                 return unless (-d $_);
1063
1064                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
1065                                 # we check related file in $projectroot
1066                                 if ($check_forks and $subdir =~ m#/.#) {
1067                                         $File::Find::prune = 1;
1068                                 } elsif (check_export_ok("$projectroot/$filter/$subdir")) {
1069                                         push @list, { path => ($filter ? "$filter/" : '') . $subdir };
1070                                         $File::Find::prune = 1;
1071                                 }
1072                         },
1073                 }, "$dir");
1074
1075         } elsif (-f $projects_list) {
1076                 # read from file(url-encoded):
1077                 # 'git%2Fgit.git Linus+Torvalds'
1078                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1079                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1080                 open my ($fd), $projects_list or return;
1081                 while (my $line = <$fd>) {
1082                         chomp $line;
1083                         my ($path, $owner) = split ' ', $line;
1084                         $path = unescape($path);
1085                         $owner = unescape($owner);
1086                         if (!defined $path) {
1087                                 next;
1088                         }
1089                         if ($filter ne '') {
1090                                 # looking for forks;
1091                                 my $pfx = substr($path, 0, length($filter));
1092                                 if ($pfx ne $filter) {
1093                                         next;
1094                                 }
1095                                 my $sfx = substr($path, length($filter));
1096                                 if ($sfx !~ /^\/.*\.git$/) {
1097                                         next;
1098                                 }
1099                         }
1100                         if (check_export_ok("$projectroot/$path")) {
1101                                 my $pr = {
1102                                         path => $path,
1103                                         owner => to_utf8($owner),
1104                                 };
1105                                 push @list, $pr
1106                         }
1107                 }
1108                 close $fd;
1109         }
1110         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
1111         return @list;
1112 }
1113
1114 sub git_get_project_owner {
1115         my $project = shift;
1116         my $owner;
1117
1118         return undef unless $project;
1119
1120         # read from file (url-encoded):
1121         # 'git%2Fgit.git Linus+Torvalds'
1122         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
1123         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
1124         if (-f $projects_list) {
1125                 open (my $fd , $projects_list);
1126                 while (my $line = <$fd>) {
1127                         chomp $line;
1128                         my ($pr, $ow) = split ' ', $line;
1129                         $pr = unescape($pr);
1130                         $ow = unescape($ow);
1131                         if ($pr eq $project) {
1132                                 $owner = to_utf8($ow);
1133                                 last;
1134                         }
1135                 }
1136                 close $fd;
1137         }
1138         if (!defined $owner) {
1139                 $owner = get_file_owner("$projectroot/$project");
1140         }
1141
1142         return $owner;
1143 }
1144
1145 sub git_get_last_activity {
1146         my ($path) = @_;
1147         my $fd;
1148
1149         $git_dir = "$projectroot/$path";
1150         open($fd, "-|", git_cmd(), 'for-each-ref',
1151              '--format=%(committer)',
1152              '--sort=-committerdate',
1153              '--count=1',
1154              'refs/heads') or return;
1155         my $most_recent = <$fd>;
1156         close $fd or return;
1157         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1158                 my $timestamp = $1;
1159                 my $age = time - $timestamp;
1160                 return ($age, age_string($age));
1161         }
1162 }
1163
1164 sub git_get_references {
1165         my $type = shift || "";
1166         my %refs;
1167         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
1168         # c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
1169         open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
1170                 ($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
1171                 or return;
1172
1173         while (my $line = <$fd>) {
1174                 chomp $line;
1175                 if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type/?[^^]+)!) {
1176                         if (defined $refs{$1}) {
1177                                 push @{$refs{$1}}, $2;
1178                         } else {
1179                                 $refs{$1} = [ $2 ];
1180                         }
1181                 }
1182         }
1183         close $fd or return;
1184         return \%refs;
1185 }
1186
1187 sub git_get_rev_name_tags {
1188         my $hash = shift || return undef;
1189
1190         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1191                 or return;
1192         my $name_rev = <$fd>;
1193         close $fd;
1194
1195         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1196                 return $1;
1197         } else {
1198                 # catches also '$hash undefined' output
1199                 return undef;
1200         }
1201 }
1202
1203 ## ----------------------------------------------------------------------
1204 ## parse to hash functions
1205
1206 sub parse_date {
1207         my $epoch = shift;
1208         my $tz = shift || "-0000";
1209
1210         my %date;
1211         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1212         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1213         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1214         $date{'hour'} = $hour;
1215         $date{'minute'} = $min;
1216         $date{'mday'} = $mday;
1217         $date{'day'} = $days[$wday];
1218         $date{'month'} = $months[$mon];
1219         $date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1220                              $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1221         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1222                              $mday, $months[$mon], $hour ,$min;
1223         $date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
1224                              1900+$year, $mon, $mday, $hour ,$min, $sec;
1225
1226         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1227         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1228         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1229         $date{'hour_local'} = $hour;
1230         $date{'minute_local'} = $min;
1231         $date{'tz_local'} = $tz;
1232         $date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
1233                                   1900+$year, $mon+1, $mday,
1234                                   $hour, $min, $sec, $tz);
1235         return %date;
1236 }
1237
1238 sub parse_tag {
1239         my $tag_id = shift;
1240         my %tag;
1241         my @comment;
1242
1243         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1244         $tag{'id'} = $tag_id;
1245         while (my $line = <$fd>) {
1246                 chomp $line;
1247                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1248                         $tag{'object'} = $1;
1249                 } elsif ($line =~ m/^type (.+)$/) {
1250                         $tag{'type'} = $1;
1251                 } elsif ($line =~ m/^tag (.+)$/) {
1252                         $tag{'name'} = $1;
1253                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1254                         $tag{'author'} = $1;
1255                         $tag{'epoch'} = $2;
1256                         $tag{'tz'} = $3;
1257                 } elsif ($line =~ m/--BEGIN/) {
1258                         push @comment, $line;
1259                         last;
1260                 } elsif ($line eq "") {
1261                         last;
1262                 }
1263         }
1264         push @comment, <$fd>;
1265         $tag{'comment'} = \@comment;
1266         close $fd or return;
1267         if (!defined $tag{'name'}) {
1268                 return
1269         };
1270         return %tag
1271 }
1272
1273 sub parse_commit_text {
1274         my ($commit_text) = @_;
1275         my @commit_lines = split '\n', $commit_text;
1276         my %co;
1277
1278         pop @commit_lines; # Remove '\0'
1279
1280         my $header = shift @commit_lines;
1281         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1282                 return;
1283         }
1284         ($co{'id'}, my @parents) = split ' ', $header;
1285         $co{'parents'} = \@parents;
1286         $co{'parent'} = $parents[0];
1287         while (my $line = shift @commit_lines) {
1288                 last if $line eq "\n";
1289                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1290                         $co{'tree'} = $1;
1291                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1292                         $co{'author'} = $1;
1293                         $co{'author_epoch'} = $2;
1294                         $co{'author_tz'} = $3;
1295                         if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
1296                                 $co{'author_name'}  = $1;
1297                                 $co{'author_email'} = $2;
1298                         } else {
1299                                 $co{'author_name'} = $co{'author'};
1300                         }
1301                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1302                         $co{'committer'} = $1;
1303                         $co{'committer_epoch'} = $2;
1304                         $co{'committer_tz'} = $3;
1305                         $co{'committer_name'} = $co{'committer'};
1306                         if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
1307                                 $co{'committer_name'}  = $1;
1308                                 $co{'committer_email'} = $2;
1309                         } else {
1310                                 $co{'committer_name'} = $co{'committer'};
1311                         }
1312                 }
1313         }
1314         if (!defined $co{'tree'}) {
1315                 return;
1316         };
1317
1318         foreach my $title (@commit_lines) {
1319                 $title =~ s/^    //;
1320                 if ($title ne "") {
1321                         $co{'title'} = chop_str($title, 80, 5);
1322                         # remove leading stuff of merges to make the interesting part visible
1323                         if (length($title) > 50) {
1324                                 $title =~ s/^Automatic //;
1325                                 $title =~ s/^merge (of|with) /Merge ... /i;
1326                                 if (length($title) > 50) {
1327                                         $title =~ s/(http|rsync):\/\///;
1328                                 }
1329                                 if (length($title) > 50) {
1330                                         $title =~ s/(master|www|rsync)\.//;
1331                                 }
1332                                 if (length($title) > 50) {
1333                                         $title =~ s/kernel.org:?//;
1334                                 }
1335                                 if (length($title) > 50) {
1336                                         $title =~ s/\/pub\/scm//;
1337                                 }
1338                         }
1339                         $co{'title_short'} = chop_str($title, 50, 5);
1340                         last;
1341                 }
1342         }
1343         if ($co{'title'} eq "") {
1344                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1345         }
1346         # remove added spaces
1347         foreach my $line (@commit_lines) {
1348                 $line =~ s/^    //;
1349         }
1350         $co{'comment'} = \@commit_lines;
1351
1352         my $age = time - $co{'committer_epoch'};
1353         $co{'age'} = $age;
1354         $co{'age_string'} = age_string($age);
1355         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1356         if ($age > 60*60*24*7*2) {
1357                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1358                 $co{'age_string_age'} = $co{'age_string'};
1359         } else {
1360                 $co{'age_string_date'} = $co{'age_string'};
1361                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1362         }
1363         return %co;
1364 }
1365
1366 sub parse_commit {
1367         my ($commit_id) = @_;
1368         my %co;
1369
1370         local $/ = "\0";
1371
1372         open my $fd, "-|", git_cmd(), "rev-list",
1373                 "--header",
1374                 "--parents",
1375                 "--max-count=1",
1376                 $commit_id,
1377                 "--",
1378                 or die_error(undef, "Open git-rev-list failed");
1379         %co = parse_commit_text(<$fd>);
1380         close $fd;
1381
1382         return %co;
1383 }
1384
1385 sub parse_commits {
1386         my ($commit_id, $maxcount, $skip, $arg, $filename) = @_;
1387         my @cos;
1388
1389         $maxcount ||= 1;
1390         $skip ||= 0;
1391
1392         # Delete once rev-list supports the --skip option
1393         if ($skip > 0) {
1394                 open my $fd, "-|", git_cmd(), "rev-list",
1395                         ($arg ? ($arg) : ()),
1396                         ("--max-count=" . ($maxcount + $skip)),
1397                         $commit_id,
1398                         "--",
1399                         ($filename ? ($filename) : ())
1400                         or die_error(undef, "Open git-rev-list failed");
1401                 while (my $line = <$fd>) {
1402                         if ($skip-- <= 0) {
1403                                 chomp $line;
1404                                 my %co = parse_commit($line);
1405                                 push @cos, \%co;
1406                         }
1407                 }
1408                 close $fd;
1409
1410                 return wantarray ? @cos : \@cos;
1411         }
1412
1413         local $/ = "\0";
1414
1415         open my $fd, "-|", git_cmd(), "rev-list",
1416                 "--header",
1417                 "--parents",
1418                 ($arg ? ($arg) : ()),
1419                 ("--max-count=" . $maxcount),
1420                 # Add once rev-list supports the --skip option
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 to_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 .= " - $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         print <<EOF;
1736 <?xml version="1.0" encoding="utf-8"?>
1737 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1738 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1739 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1740 <!-- git core binaries version $git_version -->
1741 <head>
1742 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1743 <meta name="generator" content="gitweb/$version git/$git_version"/>
1744 <meta name="robots" content="index, nofollow"/>
1745 <title>$title</title>
1746 EOF
1747 # print out each stylesheet that exist
1748         if (defined $stylesheet) {
1749 #provides backwards capability for those people who define style sheet in a config file
1750                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1751         } else {
1752                 foreach my $stylesheet (@stylesheets) {
1753                         next unless $stylesheet;
1754                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1755                 }
1756         }
1757         if (defined $project) {
1758                 printf('<link rel="alternate" title="%s log RSS feed" '.
1759                        'href="%s" type="application/rss+xml" />'."\n",
1760                        esc_param($project), href(action=>"rss"));
1761                 printf('<link rel="alternate" title="%s log Atom feed" '.
1762                        'href="%s" type="application/atom+xml" />'."\n",
1763                        esc_param($project), href(action=>"atom"));
1764         } else {
1765                 printf('<link rel="alternate" title="%s projects list" '.
1766                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1767                        $site_name, href(project=>undef, action=>"project_index"));
1768                 printf('<link rel="alternate" title="%s projects feeds" '.
1769                        'href="%s" type="text/x-opml"/>'."\n",
1770                        $site_name, href(project=>undef, action=>"opml"));
1771         }
1772         if (defined $favicon) {
1773                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1774         }
1775
1776         print "</head>\n" .
1777               "<body>\n";
1778
1779         if (-f $site_header) {
1780                 open (my $fd, $site_header);
1781                 print <$fd>;
1782                 close $fd;
1783         }
1784
1785         print "<div class=\"page_header\">\n" .
1786               $cgi->a({-href => esc_url($logo_url),
1787                        -title => $logo_label},
1788                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1789         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1790         if (defined $project) {
1791                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1792                 if (defined $action) {
1793                         print " / $action";
1794                 }
1795                 print "\n";
1796         }
1797         my ($have_search) = gitweb_check_feature('search');
1798         if ((defined $project) && ($have_search)) {
1799                 if (!defined $searchtext) {
1800                         $searchtext = "";
1801                 }
1802                 my $search_hash;
1803                 if (defined $hash_base) {
1804                         $search_hash = $hash_base;
1805                 } elsif (defined $hash) {
1806                         $search_hash = $hash;
1807                 } else {
1808                         $search_hash = "HEAD";
1809                 }
1810                 $cgi->param("a", "search");
1811                 $cgi->param("h", $search_hash);
1812                 $cgi->param("p", $project);
1813                 print $cgi->startform(-method => "get", -action => $my_uri) .
1814                       "<div class=\"search\">\n" .
1815                       $cgi->hidden(-name => "p") . "\n" .
1816                       $cgi->hidden(-name => "a") . "\n" .
1817                       $cgi->hidden(-name => "h") . "\n" .
1818                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1819                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1820                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1821                       " search:\n",
1822                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1823                       "</div>" .
1824                       $cgi->end_form() . "\n";
1825         }
1826         print "</div>\n";
1827 }
1828
1829 sub git_footer_html {
1830         print "<div class=\"page_footer\">\n";
1831         if (defined $project) {
1832                 my $descr = git_get_project_description($project);
1833                 if (defined $descr) {
1834                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1835                 }
1836                 print $cgi->a({-href => href(action=>"rss"),
1837                               -class => "rss_logo"}, "RSS") . " ";
1838                 print $cgi->a({-href => href(action=>"atom"),
1839                               -class => "rss_logo"}, "Atom") . "\n";
1840         } else {
1841                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1842                               -class => "rss_logo"}, "OPML") . " ";
1843                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1844                               -class => "rss_logo"}, "TXT") . "\n";
1845         }
1846         print "</div>\n" ;
1847
1848         if (-f $site_footer) {
1849                 open (my $fd, $site_footer);
1850                 print <$fd>;
1851                 close $fd;
1852         }
1853
1854         print "</body>\n" .
1855               "</html>";
1856 }
1857
1858 sub die_error {
1859         my $status = shift || "403 Forbidden";
1860         my $error = shift || "Malformed query, file missing or permission denied";
1861
1862         git_header_html($status);
1863         print <<EOF;
1864 <div class="page_body">
1865 <br /><br />
1866 $status - $error
1867 <br />
1868 </div>
1869 EOF
1870         git_footer_html();
1871         exit;
1872 }
1873
1874 ## ----------------------------------------------------------------------
1875 ## functions printing or outputting HTML: navigation
1876
1877 sub git_print_page_nav {
1878         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1879         $extra = '' if !defined $extra; # pager or formats
1880
1881         my @navs = qw(summary shortlog log commit commitdiff tree);
1882         if ($suppress) {
1883                 @navs = grep { $_ ne $suppress } @navs;
1884         }
1885
1886         my %arg = map { $_ => {action=>$_} } @navs;
1887         if (defined $head) {
1888                 for (qw(commit commitdiff)) {
1889                         $arg{$_}{hash} = $head;
1890                 }
1891                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1892                         for (qw(shortlog log)) {
1893                                 $arg{$_}{hash} = $head;
1894                         }
1895                 }
1896         }
1897         $arg{tree}{hash} = $treehead if defined $treehead;
1898         $arg{tree}{hash_base} = $treebase if defined $treebase;
1899
1900         print "<div class=\"page_nav\">\n" .
1901                 (join " | ",
1902                  map { $_ eq $current ?
1903                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1904                  } @navs);
1905         print "<br/>\n$extra<br/>\n" .
1906               "</div>\n";
1907 }
1908
1909 sub format_paging_nav {
1910         my ($action, $hash, $head, $page, $nrevs) = @_;
1911         my $paging_nav;
1912
1913
1914         if ($hash ne $head || $page) {
1915                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1916         } else {
1917                 $paging_nav .= "HEAD";
1918         }
1919
1920         if ($page > 0) {
1921                 $paging_nav .= " &sdot; " .
1922                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1923                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1924         } else {
1925                 $paging_nav .= " &sdot; prev";
1926         }
1927
1928         if ($nrevs >= (100 * ($page+1)-1)) {
1929                 $paging_nav .= " &sdot; " .
1930                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1931                                  -accesskey => "n", -title => "Alt-n"}, "next");
1932         } else {
1933                 $paging_nav .= " &sdot; next";
1934         }
1935
1936         return $paging_nav;
1937 }
1938
1939 ## ......................................................................
1940 ## functions printing or outputting HTML: div
1941
1942 sub git_print_header_div {
1943         my ($action, $title, $hash, $hash_base) = @_;
1944         my %args = ();
1945
1946         $args{action} = $action;
1947         $args{hash} = $hash if $hash;
1948         $args{hash_base} = $hash_base if $hash_base;
1949
1950         print "<div class=\"header\">\n" .
1951               $cgi->a({-href => href(%args), -class => "title"},
1952               $title ? $title : $action) .
1953               "\n</div>\n";
1954 }
1955
1956 #sub git_print_authorship (\%) {
1957 sub git_print_authorship {
1958         my $co = shift;
1959
1960         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1961         print "<div class=\"author_date\">" .
1962               esc_html($co->{'author_name'}) .
1963               " [$ad{'rfc2822'}";
1964         if ($ad{'hour_local'} < 6) {
1965                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1966                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1967         } else {
1968                 printf(" (%02d:%02d %s)",
1969                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1970         }
1971         print "]</div>\n";
1972 }
1973
1974 sub git_print_page_path {
1975         my $name = shift;
1976         my $type = shift;
1977         my $hb = shift;
1978
1979
1980         print "<div class=\"page_path\">";
1981         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1982                       -title => 'tree root'}, "[$project]");
1983         print " / ";
1984         if (defined $name) {
1985                 my @dirname = split '/', $name;
1986                 my $basename = pop @dirname;
1987                 my $fullname = '';
1988
1989                 foreach my $dir (@dirname) {
1990                         $fullname .= ($fullname ? '/' : '') . $dir;
1991                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1992                                                      hash_base=>$hb),
1993                                       -title => esc_html($fullname)}, esc_path($dir));
1994                         print " / ";
1995                 }
1996                 if (defined $type && $type eq 'blob') {
1997                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1998                                                      hash_base=>$hb),
1999                                       -title => esc_html($name)}, esc_path($basename));
2000                 } elsif (defined $type && $type eq 'tree') {
2001                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
2002                                                      hash_base=>$hb),
2003                                       -title => esc_html($name)}, esc_path($basename));
2004                         print " / ";
2005                 } else {
2006                         print esc_path($basename);
2007                 }
2008         }
2009         print "<br/></div>\n";
2010 }
2011
2012 # sub git_print_log (\@;%) {
2013 sub git_print_log ($;%) {
2014         my $log = shift;
2015         my %opts = @_;
2016
2017         if ($opts{'-remove_title'}) {
2018                 # remove title, i.e. first line of log
2019                 shift @$log;
2020         }
2021         # remove leading empty lines
2022         while (defined $log->[0] && $log->[0] eq "") {
2023                 shift @$log;
2024         }
2025
2026         # print log
2027         my $signoff = 0;
2028         my $empty = 0;
2029         foreach my $line (@$log) {
2030                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
2031                         $signoff = 1;
2032                         $empty = 0;
2033                         if (! $opts{'-remove_signoff'}) {
2034                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
2035                                 next;
2036                         } else {
2037                                 # remove signoff lines
2038                                 next;
2039                         }
2040                 } else {
2041                         $signoff = 0;
2042                 }
2043
2044                 # print only one empty line
2045                 # do not print empty line after signoff
2046                 if ($line eq "") {
2047                         next if ($empty || $signoff);
2048                         $empty = 1;
2049                 } else {
2050                         $empty = 0;
2051                 }
2052
2053                 print format_log_line_html($line) . "<br/>\n";
2054         }
2055
2056         if ($opts{'-final_empty_line'}) {
2057                 # end with single empty line
2058                 print "<br/>\n" unless $empty;
2059         }
2060 }
2061
2062 # return link target (what link points to)
2063 sub git_get_link_target {
2064         my $hash = shift;
2065         my $link_target;
2066
2067         # read link
2068         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2069                 or return;
2070         {
2071                 local $/;
2072                 $link_target = <$fd>;
2073         }
2074         close $fd
2075                 or return;
2076
2077         return $link_target;
2078 }
2079
2080 # given link target, and the directory (basedir) the link is in,
2081 # return target of link relative to top directory (top tree);
2082 # return undef if it is not possible (including absolute links).
2083 sub normalize_link_target {
2084         my ($link_target, $basedir, $hash_base) = @_;
2085
2086         # we can normalize symlink target only if $hash_base is provided
2087         return unless $hash_base;
2088
2089         # absolute symlinks (beginning with '/') cannot be normalized
2090         return if (substr($link_target, 0, 1) eq '/');
2091
2092         # normalize link target to path from top (root) tree (dir)
2093         my $path;
2094         if ($basedir) {
2095                 $path = $basedir . '/' . $link_target;
2096         } else {
2097                 # we are in top (root) tree (dir)
2098                 $path = $link_target;
2099         }
2100
2101         # remove //, /./, and /../
2102         my @path_parts;
2103         foreach my $part (split('/', $path)) {
2104                 # discard '.' and ''
2105                 next if (!$part || $part eq '.');
2106                 # handle '..'
2107                 if ($part eq '..') {
2108                         if (@path_parts) {
2109                                 pop @path_parts;
2110                         } else {
2111                                 # link leads outside repository (outside top dir)
2112                                 return;
2113                         }
2114                 } else {
2115                         push @path_parts, $part;
2116                 }
2117         }
2118         $path = join('/', @path_parts);
2119
2120         return $path;
2121 }
2122
2123 # print tree entry (row of git_tree), but without encompassing <tr> element
2124 sub git_print_tree_entry {
2125         my ($t, $basedir, $hash_base, $have_blame) = @_;
2126
2127         my %base_key = ();
2128         $base_key{'hash_base'} = $hash_base if defined $hash_base;
2129
2130         # The format of a table row is: mode list link.  Where mode is
2131         # the mode of the entry, list is the name of the entry, an href,
2132         # and link is the action links of the entry.
2133
2134         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
2135         if ($t->{'type'} eq "blob") {
2136                 print "<td class=\"list\">" .
2137                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2138                                                file_name=>"$basedir$t->{'name'}", %base_key),
2139                                 -class => "list"}, esc_path($t->{'name'}));
2140                 if (S_ISLNK(oct $t->{'mode'})) {
2141                         my $link_target = git_get_link_target($t->{'hash'});
2142                         if ($link_target) {
2143                                 my $norm_target = normalize_link_target($link_target, $basedir, $hash_base);
2144                                 if (defined $norm_target) {
2145                                         print " -> " .
2146                                               $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
2147                                                                      file_name=>$norm_target),
2148                                                        -title => $norm_target}, esc_path($link_target));
2149                                 } else {
2150                                         print " -> " . esc_path($link_target);
2151                                 }
2152                         }
2153                 }
2154                 print "</td>\n";
2155                 print "<td class=\"link\">";
2156                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
2157                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2158                               "blob");
2159                 if ($have_blame) {
2160                         print " | " .
2161                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
2162                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
2163                                       "blame");
2164                 }
2165                 if (defined $hash_base) {
2166                         print " | " .
2167                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2168                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
2169                                       "history");
2170                 }
2171                 print " | " .
2172                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
2173                                                file_name=>"$basedir$t->{'name'}")},
2174                                 "raw");
2175                 print "</td>\n";
2176
2177         } elsif ($t->{'type'} eq "tree") {
2178                 print "<td class=\"list\">";
2179                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2180                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2181                               esc_path($t->{'name'}));
2182                 print "</td>\n";
2183                 print "<td class=\"link\">";
2184                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
2185                                              file_name=>"$basedir$t->{'name'}", %base_key)},
2186                               "tree");
2187                 if (defined $hash_base) {
2188                         print " | " .
2189                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2190                                                      file_name=>"$basedir$t->{'name'}")},
2191                                       "history");
2192                 }
2193                 print "</td>\n";
2194         }
2195 }
2196
2197 ## ......................................................................
2198 ## functions printing large fragments of HTML
2199
2200 sub git_difftree_body {
2201         my ($difftree, $hash, $parent) = @_;
2202         my ($have_blame) = gitweb_check_feature('blame');
2203         print "<div class=\"list_head\">\n";
2204         if ($#{$difftree} > 10) {
2205                 print(($#{$difftree} + 1) . " files changed:\n");
2206         }
2207         print "</div>\n";
2208
2209         print "<table class=\"diff_tree\">\n";
2210         my $alternate = 1;
2211         my $patchno = 0;
2212         foreach my $line (@{$difftree}) {
2213                 my %diff = parse_difftree_raw_line($line);
2214
2215                 if ($alternate) {
2216                         print "<tr class=\"dark\">\n";
2217                 } else {
2218                         print "<tr class=\"light\">\n";
2219                 }
2220                 $alternate ^= 1;
2221
2222                 my ($to_mode_oct, $to_mode_str, $to_file_type);
2223                 my ($from_mode_oct, $from_mode_str, $from_file_type);
2224                 if ($diff{'to_mode'} ne ('0' x 6)) {
2225                         $to_mode_oct = oct $diff{'to_mode'};
2226                         if (S_ISREG($to_mode_oct)) { # only for regular file
2227                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
2228                         }
2229                         $to_file_type = file_type($diff{'to_mode'});
2230                 }
2231                 if ($diff{'from_mode'} ne ('0' x 6)) {
2232                         $from_mode_oct = oct $diff{'from_mode'};
2233                         if (S_ISREG($to_mode_oct)) { # only for regular file
2234                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
2235                         }
2236                         $from_file_type = file_type($diff{'from_mode'});
2237                 }
2238
2239                 if ($diff{'status'} eq "A") { # created
2240                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
2241                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
2242                         $mode_chng   .= "]</span>";
2243                         print "<td>";
2244                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2245                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2246                                       -class => "list"}, esc_path($diff{'file'}));
2247                         print "</td>\n";
2248                         print "<td>$mode_chng</td>\n";
2249                         print "<td class=\"link\">";
2250                         if ($action eq 'commitdiff') {
2251                                 # link to patch
2252                                 $patchno++;
2253                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2254                                 print " | ";
2255                         }
2256                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2257                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2258                                       "blob") . " | ";
2259                         print "</td>\n";
2260
2261                 } elsif ($diff{'status'} eq "D") { # deleted
2262                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
2263                         print "<td>";
2264                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2265                                                      hash_base=>$parent, file_name=>$diff{'file'}),
2266                                        -class => "list"}, esc_path($diff{'file'}));
2267                         print "</td>\n";
2268                         print "<td>$mode_chng</td>\n";
2269                         print "<td class=\"link\">";
2270                         if ($action eq 'commitdiff') {
2271                                 # link to patch
2272                                 $patchno++;
2273                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
2274                                 print " | ";
2275                         }
2276                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2277                                                      hash_base=>$parent, file_name=>$diff{'file'})},
2278                                       "blob") . " | ";
2279                         if ($have_blame) {
2280                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2281                                                              file_name=>$diff{'file'})},
2282                                               "blame") . " | ";
2283                         }
2284                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2285                                                      file_name=>$diff{'file'})},
2286                                       "history");
2287                         print "</td>\n";
2288
2289                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
2290                         my $mode_chnge = "";
2291                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2292                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
2293                                 if ($from_file_type != $to_file_type) {
2294                                         $mode_chnge .= " from $from_file_type to $to_file_type";
2295                                 }
2296                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
2297                                         if ($from_mode_str && $to_mode_str) {
2298                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
2299                                         } elsif ($to_mode_str) {
2300                                                 $mode_chnge .= " mode: $to_mode_str";
2301                                         }
2302                                 }
2303                                 $mode_chnge .= "]</span>\n";
2304                         }
2305                         print "<td>";
2306                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2307                                                      hash_base=>$hash, file_name=>$diff{'file'}),
2308                                       -class => "list"}, esc_path($diff{'file'}));
2309                         print "</td>\n";
2310                         print "<td>$mode_chnge</td>\n";
2311                         print "<td class=\"link\">";
2312                         if ($action eq 'commitdiff') {
2313                                 # link to patch
2314                                 $patchno++;
2315                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2316                                       " | ";
2317                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2318                                 # "commit" view and modified file (not onlu mode changed)
2319                                 print $cgi->a({-href => href(action=>"blobdiff",
2320                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2321                                                              hash_base=>$hash, hash_parent_base=>$parent,
2322                                                              file_name=>$diff{'file'})},
2323                                               "diff") .
2324                                       " | ";
2325                         }
2326                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2327                                                      hash_base=>$hash, file_name=>$diff{'file'})},
2328                                        "blob") . " | ";
2329                         if ($have_blame) {
2330                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2331                                                              file_name=>$diff{'file'})},
2332                                               "blame") . " | ";
2333                         }
2334                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2335                                                      file_name=>$diff{'file'})},
2336                                       "history");
2337                         print "</td>\n";
2338
2339                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
2340                         my %status_name = ('R' => 'moved', 'C' => 'copied');
2341                         my $nstatus = $status_name{$diff{'status'}};
2342                         my $mode_chng = "";
2343                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
2344                                 # mode also for directories, so we cannot use $to_mode_str
2345                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
2346                         }
2347                         print "<td>" .
2348                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2349                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
2350                                       -class => "list"}, esc_path($diff{'to_file'})) . "</td>\n" .
2351                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
2352                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
2353                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
2354                                       -class => "list"}, esc_path($diff{'from_file'})) .
2355                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
2356                               "<td class=\"link\">";
2357                         if ($action eq 'commitdiff') {
2358                                 # link to patch
2359                                 $patchno++;
2360                                 print $cgi->a({-href => "#patch$patchno"}, "patch") .
2361                                       " | ";
2362                         } elsif ($diff{'to_id'} ne $diff{'from_id'}) {
2363                                 # "commit" view and modified file (not only pure rename or copy)
2364                                 print $cgi->a({-href => href(action=>"blobdiff",
2365                                                              hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
2366                                                              hash_base=>$hash, hash_parent_base=>$parent,
2367                                                              file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
2368                                               "diff") .
2369                                       " | ";
2370                         }
2371                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
2372                                                      hash_base=>$parent, file_name=>$diff{'to_file'})},
2373                                       "blob") . " | ";
2374                         if ($have_blame) {
2375                                 print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
2376                                                              file_name=>$diff{'to_file'})},
2377                                               "blame") . " | ";
2378                         }
2379                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
2380                                                     file_name=>$diff{'to_file'})},
2381                                       "history");
2382                         print "</td>\n";
2383
2384                 } # we should not encounter Unmerged (U) or Unknown (X) status
2385                 print "</tr>\n";
2386         }
2387         print "</table>\n";
2388 }
2389
2390 sub git_patchset_body {
2391         my ($fd, $difftree, $hash, $hash_parent) = @_;
2392
2393         my $patch_idx = 0;
2394         my $patch_line;
2395         my $diffinfo;
2396         my (%from, %to);
2397         my ($from_id, $to_id);
2398
2399         print "<div class=\"patchset\">\n";
2400
2401         # skip to first patch
2402         while ($patch_line = <$fd>) {
2403                 chomp $patch_line;
2404
2405                 last if ($patch_line =~ m/^diff /);
2406         }
2407
2408  PATCH:
2409         while ($patch_line) {
2410                 my @diff_header;
2411
2412                 # git diff header
2413                 #assert($patch_line =~ m/^diff /) if DEBUG;
2414                 #assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
2415                 push @diff_header, $patch_line;
2416
2417                 # extended diff header
2418         EXTENDED_HEADER:
2419                 while ($patch_line = <$fd>) {
2420                         chomp $patch_line;
2421
2422                         last EXTENDED_HEADER if ($patch_line =~ m/^--- /);
2423
2424                         if ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/) {
2425                                 $from_id = $1;
2426                                 $to_id   = $2;
2427                         }
2428
2429                         push @diff_header, $patch_line;
2430                 }
2431                 #last PATCH unless $patch_line;
2432                 my $last_patch_line = $patch_line;
2433
2434                 # check if current patch belong to current raw line
2435                 # and parse raw git-diff line if needed
2436                 if (defined $diffinfo &&
2437                     $diffinfo->{'from_id'} eq $from_id &&
2438                     $diffinfo->{'to_id'}   eq $to_id) {
2439                         # this is split patch
2440                         print "<div class=\"patch cont\">\n";
2441                 } else {
2442                         # advance raw git-diff output if needed
2443                         $patch_idx++ if defined $diffinfo;
2444
2445                         # read and prepare patch information
2446                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2447                                 # pre-parsed (or generated by hand)
2448                                 $diffinfo = $difftree->[$patch_idx];
2449                         } else {
2450                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2451                         }
2452                         $from{'file'} = $diffinfo->{'from_file'} || $diffinfo->{'file'};
2453                         $to{'file'}   = $diffinfo->{'to_file'}   || $diffinfo->{'file'};
2454                         if ($diffinfo->{'status'} ne "A") { # not new (added) file
2455                                 $from{'href'} = href(action=>"blob", hash_base=>$hash_parent,
2456                                                      hash=>$diffinfo->{'from_id'},
2457                                                      file_name=>$from{'file'});
2458                         }
2459                         if ($diffinfo->{'status'} ne "D") { # not deleted file
2460                                 $to{'href'} = href(action=>"blob", hash_base=>$hash,
2461                                                    hash=>$diffinfo->{'to_id'},
2462                                                    file_name=>$to{'file'});
2463                         }
2464                         # this is first patch for raw difftree line with $patch_idx index
2465                         # we index @$difftree array from 0, but number patches from 1
2466                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2467                 }
2468
2469                 # print "git diff" header
2470                 $patch_line = shift @diff_header;
2471                 $patch_line =~ s!^(diff (.*?) )"?a/.*$!$1!;
2472                 if ($from{'href'}) {
2473                         $patch_line .= $cgi->a({-href => $from{'href'}, -class => "path"},
2474                                                'a/' . esc_path($from{'file'}));
2475                 } else { # file was added
2476                         $patch_line .= 'a/' . esc_path($from{'file'});
2477                 }
2478                 $patch_line .= ' ';
2479                 if ($to{'href'}) {
2480                         $patch_line .= $cgi->a({-href => $to{'href'}, -class => "path"},
2481                                                'b/' . esc_path($to{'file'}));
2482                 } else { # file was deleted
2483                         $patch_line .= 'b/' . esc_path($to{'file'});
2484                 }
2485                 print "<div class=\"diff header\">$patch_line</div>\n";
2486
2487                 # print extended diff header
2488                 print "<div class=\"diff extended_header\">\n" if (@diff_header > 0);
2489         EXTENDED_HEADER:
2490                 foreach $patch_line (@diff_header) {
2491                         # match <path>
2492                         if ($patch_line =~ s!^((copy|rename) from ).*$!$1! && $from{'href'}) {
2493                                 $patch_line .= $cgi->a({-href=>$from{'href'}, -class=>"path"},
2494                                                         esc_path($from{'file'}));
2495                         }
2496                         if ($patch_line =~ s!^((copy|rename) to ).*$!$1! && $to{'href'}) {
2497                                 $patch_line = $cgi->a({-href=>$to{'href'}, -class=>"path"},
2498                                                       esc_path($to{'file'}));
2499                         }
2500                         # match <mode>
2501                         if ($patch_line =~ m/\s(\d{6})$/) {
2502                                 $patch_line .= '<span class="info"> (' .
2503                                                file_type_long($1) .
2504                                                ')</span>';
2505                         }
2506                         # match <hash>
2507                         if ($patch_line =~ m/^index/) {
2508                                 my ($from_link, $to_link);
2509                                 if ($from{'href'}) {
2510                                         $from_link = $cgi->a({-href=>$from{'href'}, -class=>"hash"},
2511                                                              substr($diffinfo->{'from_id'},0,7));
2512                                 } else {
2513                                         $from_link = '0' x 7;
2514                                 }
2515                                 if ($to{'href'}) {
2516                                         $to_link = $cgi->a({-href=>$to{'href'}, -class=>"hash"},
2517                                                            substr($diffinfo->{'to_id'},0,7));
2518                                 } else {
2519                                         $to_link = '0' x 7;
2520                                 }
2521                                 #affirm {
2522                                 #       my ($from_hash, $to_hash) =
2523                                 #               ($patch_line =~ m/^index ([0-9a-fA-F]{40})..([0-9a-fA-F]{40})/);
2524                                 #       my ($from_id, $to_id) =
2525                                 #               ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2526                                 #       ($from_hash eq $from_id) && ($to_hash eq $to_id);
2527                                 #} if DEBUG;
2528                                 my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
2529                                 $patch_line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
2530                         }
2531                         print $patch_line . "<br/>\n";
2532                 }
2533                 print "</div>\n"  if (@diff_header > 0); # class="diff extended_header"
2534
2535                 # from-file/to-file diff header
2536                 $patch_line = $last_patch_line;
2537                 #assert($patch_line =~ m/^---/) if DEBUG;
2538                 if ($from{'href'}) {
2539                         $patch_line = '--- a/' .
2540                                       $cgi->a({-href=>$from{'href'}, -class=>"path"},
2541                                               esc_path($from{'file'}));
2542                 }
2543                 print "<div class=\"diff from_file\">$patch_line</div>\n";
2544
2545                 $patch_line = <$fd>;
2546                 #last PATCH unless $patch_line;
2547                 chomp $patch_line;
2548
2549                 #assert($patch_line =~ m/^+++/) if DEBUG;
2550                 if ($to{'href'}) {
2551                         $patch_line = '+++ b/' .
2552                                       $cgi->a({-href=>$to{'href'}, -class=>"path"},
2553                                               esc_path($to{'file'}));
2554                 }
2555                 print "<div class=\"diff to_file\">$patch_line</div>\n";
2556
2557                 # the patch itself
2558         LINE:
2559                 while ($patch_line = <$fd>) {
2560                         chomp $patch_line;
2561
2562                         next PATCH if ($patch_line =~ m/^diff /);
2563
2564                         print format_diff_line($patch_line, \%from, \%to);
2565                 }
2566
2567         } continue {
2568                 print "</div>\n"; # class="patch"
2569         }
2570
2571         print "</div>\n"; # class="patchset"
2572 }
2573
2574 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2575
2576 sub git_project_list_body {
2577         my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
2578
2579         my ($check_forks) = gitweb_check_feature('forks');
2580
2581         my @projects;
2582         foreach my $pr (@$projlist) {
2583                 my (@aa) = git_get_last_activity($pr->{'path'});
2584                 unless (@aa) {
2585                         next;
2586                 }
2587                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2588                 if (!defined $pr->{'descr'}) {
2589                         my $descr = git_get_project_description($pr->{'path'}) || "";
2590                         $pr->{'descr_long'} = to_utf8($descr);
2591                         $pr->{'descr'} = chop_str($descr, 25, 5);
2592                 }
2593                 if (!defined $pr->{'owner'}) {
2594                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2595                 }
2596                 if ($check_forks) {
2597                         my $pname = $pr->{'path'};
2598                         if (($pname =~ s/\.git$//) &&
2599                             ($pname !~ /\/$/) &&
2600                             (-d "$projectroot/$pname")) {
2601                                 $pr->{'forks'} = "-d $projectroot/$pname";
2602                         }
2603                         else {
2604                                 $pr->{'forks'} = 0;
2605                         }
2606                 }
2607                 push @projects, $pr;
2608         }
2609
2610         $order ||= "project";
2611         $from = 0 unless defined $from;
2612         $to = $#projects if (!defined $to || $#projects < $to);
2613
2614         print "<table class=\"project_list\">\n";
2615         unless ($no_header) {
2616                 print "<tr>\n";
2617                 if ($check_forks) {
2618                         print "<th></th>\n";
2619                 }
2620                 if ($order eq "project") {
2621                         @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2622                         print "<th>Project</th>\n";
2623                 } else {
2624                         print "<th>" .
2625                               $cgi->a({-href => href(project=>undef, order=>'project'),
2626                                        -class => "header"}, "Project") .
2627                               "</th>\n";
2628                 }
2629                 if ($order eq "descr") {
2630                         @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2631                         print "<th>Description</th>\n";
2632                 } else {
2633                         print "<th>" .
2634                               $cgi->a({-href => href(project=>undef, order=>'descr'),
2635                                        -class => "header"}, "Description") .
2636                               "</th>\n";
2637                 }
2638                 if ($order eq "owner") {
2639                         @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2640                         print "<th>Owner</th>\n";
2641                 } else {
2642                         print "<th>" .
2643                               $cgi->a({-href => href(project=>undef, order=>'owner'),
2644                                        -class => "header"}, "Owner") .
2645                               "</th>\n";
2646                 }
2647                 if ($order eq "age") {
2648                         @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2649                         print "<th>Last Change</th>\n";
2650                 } else {
2651                         print "<th>" .
2652                               $cgi->a({-href => href(project=>undef, order=>'age'),
2653                                        -class => "header"}, "Last Change") .
2654                               "</th>\n";
2655                 }
2656                 print "<th></th>\n" .
2657                       "</tr>\n";
2658         }
2659         my $alternate = 1;
2660         for (my $i = $from; $i <= $to; $i++) {
2661                 my $pr = $projects[$i];
2662                 if ($alternate) {
2663                         print "<tr class=\"dark\">\n";
2664                 } else {
2665                         print "<tr class=\"light\">\n";
2666                 }
2667                 $alternate ^= 1;
2668                 if ($check_forks) {
2669                         print "<td>";
2670                         if ($pr->{'forks'}) {
2671                                 print "<!-- $pr->{'forks'} -->\n";
2672                                 print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
2673                         }
2674                         print "</td>\n";
2675                 }
2676                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2677                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2678                       "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2679                                         -class => "list", -title => $pr->{'descr_long'}},
2680                                         esc_html($pr->{'descr'})) . "</td>\n" .
2681                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2682                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2683                       $pr->{'age_string'} . "</td>\n" .
2684                       "<td class=\"link\">" .
2685                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2686                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2687                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2688                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2689                       ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
2690                       "</td>\n" .
2691                       "</tr>\n";
2692         }
2693         if (defined $extra) {
2694                 print "<tr>\n";
2695                 if ($check_forks) {
2696                         print "<td></td>\n";
2697                 }
2698                 print "<td colspan=\"5\">$extra</td>\n" .
2699                       "</tr>\n";
2700         }
2701         print "</table>\n";
2702 }
2703
2704 sub git_shortlog_body {
2705         # uses global variable $project
2706         my ($revlist, $from, $to, $refs, $extra) = @_;
2707
2708         my $have_snapshot = gitweb_have_snapshot();
2709
2710         $from = 0 unless defined $from;
2711         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2712
2713         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2714         my $alternate = 1;
2715         for (my $i = $from; $i <= $to; $i++) {
2716                 my $commit = $revlist->[$i];
2717                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2718                 my $ref = format_ref_marker($refs, $commit);
2719                 my %co = parse_commit($commit);
2720                 if ($alternate) {
2721                         print "<tr class=\"dark\">\n";
2722                 } else {
2723                         print "<tr class=\"light\">\n";
2724                 }
2725                 $alternate ^= 1;
2726                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2727                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2728                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2729                       "<td>";
2730                 print format_subject_html($co{'title'}, $co{'title_short'},
2731                                           href(action=>"commit", hash=>$commit), $ref);
2732                 print "</td>\n" .
2733                       "<td class=\"link\">" .
2734                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2735                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2736                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2737                 if ($have_snapshot) {
2738                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2739                 }
2740                 print "</td>\n" .
2741                       "</tr>\n";
2742         }
2743         if (defined $extra) {
2744                 print "<tr>\n" .
2745                       "<td colspan=\"4\">$extra</td>\n" .
2746                       "</tr>\n";
2747         }
2748         print "</table>\n";
2749 }
2750
2751 sub git_history_body {
2752         # Warning: assumes constant type (blob or tree) during history
2753         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2754
2755         $from = 0 unless defined $from;
2756         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2757
2758         print "<table class=\"history\" cellspacing=\"0\">\n";
2759         my $alternate = 1;
2760         for (my $i = $from; $i <= $to; $i++) {
2761                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2762                         next;
2763                 }
2764
2765                 my $commit = $1;
2766                 my %co = parse_commit($commit);
2767                 if (!%co) {
2768                         next;
2769                 }
2770
2771                 my $ref = format_ref_marker($refs, $commit);
2772
2773                 if ($alternate) {
2774                         print "<tr class=\"dark\">\n";
2775                 } else {
2776                         print "<tr class=\"light\">\n";
2777                 }
2778                 $alternate ^= 1;
2779                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2780                       # shortlog uses      chop_str($co{'author_name'}, 10)
2781                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2782                       "<td>";
2783                 # originally git_history used chop_str($co{'title'}, 50)
2784                 print format_subject_html($co{'title'}, $co{'title_short'},
2785                                           href(action=>"commit", hash=>$commit), $ref);
2786                 print "</td>\n" .
2787                       "<td class=\"link\">" .
2788                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2789                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2790
2791                 if ($ftype eq 'blob') {
2792                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2793                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2794                         if (defined $blob_current && defined $blob_parent &&
2795                                         $blob_current ne $blob_parent) {
2796                                 print " | " .
2797                                         $cgi->a({-href => href(action=>"blobdiff",
2798                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2799                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2800                                                                file_name=>$file_name)},
2801                                                 "diff to current");
2802                         }
2803                 }
2804                 print "</td>\n" .
2805                       "</tr>\n";
2806         }
2807         if (defined $extra) {
2808                 print "<tr>\n" .
2809                       "<td colspan=\"4\">$extra</td>\n" .
2810                       "</tr>\n";
2811         }
2812         print "</table>\n";
2813 }
2814
2815 sub git_tags_body {
2816         # uses global variable $project
2817         my ($taglist, $from, $to, $extra) = @_;
2818         $from = 0 unless defined $from;
2819         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2820
2821         print "<table class=\"tags\" cellspacing=\"0\">\n";
2822         my $alternate = 1;
2823         for (my $i = $from; $i <= $to; $i++) {
2824                 my $entry = $taglist->[$i];
2825                 my %tag = %$entry;
2826                 my $comment = $tag{'subject'};
2827                 my $comment_short;
2828                 if (defined $comment) {
2829                         $comment_short = chop_str($comment, 30, 5);
2830                 }
2831                 if ($alternate) {
2832                         print "<tr class=\"dark\">\n";
2833                 } else {
2834                         print "<tr class=\"light\">\n";
2835                 }
2836                 $alternate ^= 1;
2837                 print "<td><i>$tag{'age'}</i></td>\n" .
2838                       "<td>" .
2839                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2840                                -class => "list name"}, esc_html($tag{'name'})) .
2841                       "</td>\n" .
2842                       "<td>";
2843                 if (defined $comment) {
2844                         print format_subject_html($comment, $comment_short,
2845                                                   href(action=>"tag", hash=>$tag{'id'}));
2846                 }
2847                 print "</td>\n" .
2848                       "<td class=\"selflink\">";
2849                 if ($tag{'type'} eq "tag") {
2850                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2851                 } else {
2852                         print "&nbsp;";
2853                 }
2854                 print "</td>\n" .
2855                       "<td class=\"link\">" . " | " .
2856                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2857                 if ($tag{'reftype'} eq "commit") {
2858                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2859                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log");
2860                 } elsif ($tag{'reftype'} eq "blob") {
2861                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2862                 }
2863                 print "</td>\n" .
2864                       "</tr>";
2865         }
2866         if (defined $extra) {
2867                 print "<tr>\n" .
2868                       "<td colspan=\"5\">$extra</td>\n" .
2869                       "</tr>\n";
2870         }
2871         print "</table>\n";
2872 }
2873
2874 sub git_heads_body {
2875         # uses global variable $project
2876         my ($headlist, $head, $from, $to, $extra) = @_;
2877         $from = 0 unless defined $from;
2878         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2879
2880         print "<table class=\"heads\" cellspacing=\"0\">\n";
2881         my $alternate = 1;
2882         for (my $i = $from; $i <= $to; $i++) {
2883                 my $entry = $headlist->[$i];
2884                 my %ref = %$entry;
2885                 my $curr = $ref{'id'} eq $head;
2886                 if ($alternate) {
2887                         print "<tr class=\"dark\">\n";
2888                 } else {
2889                         print "<tr class=\"light\">\n";
2890                 }
2891                 $alternate ^= 1;
2892                 print "<td><i>$ref{'age'}</i></td>\n" .
2893                       ($curr ? "<td class=\"current_head\">" : "<td>") .
2894                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'}),
2895                                -class => "list name"},esc_html($ref{'name'})) .
2896                       "</td>\n" .
2897                       "<td class=\"link\">" .
2898                       $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'name'})}, "shortlog") . " | " .
2899                       $cgi->a({-href => href(action=>"log", hash=>$ref{'name'})}, "log") . " | " .
2900                       $cgi->a({-href => href(action=>"tree", hash=>$ref{'name'}, hash_base=>$ref{'name'})}, "tree") .
2901                       "</td>\n" .
2902                       "</tr>";
2903         }
2904         if (defined $extra) {
2905                 print "<tr>\n" .
2906                       "<td colspan=\"3\">$extra</td>\n" .
2907                       "</tr>\n";
2908         }
2909         print "</table>\n";
2910 }
2911
2912 sub git_search_grep_body {
2913         my ($greplist, $from, $to, $extra) = @_;
2914         $from = 0 unless defined $from;
2915         $to = $#{$greplist} if (!defined $to || $#{$greplist} < $to);
2916
2917         print "<table class=\"grep\" cellspacing=\"0\">\n";
2918         my $alternate = 1;
2919         for (my $i = $from; $i <= $to; $i++) {
2920                 my $commit = $greplist->[$i];
2921                 my %co = parse_commit($commit);
2922                 if (!%co) {
2923                         next;
2924                 }
2925                 if ($alternate) {
2926                         print "<tr class=\"dark\">\n";
2927                 } else {
2928                         print "<tr class=\"light\">\n";
2929                 }
2930                 $alternate ^= 1;
2931                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2932                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
2933                       "<td>" .
2934                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
2935                                esc_html(chop_str($co{'title'}, 50)) . "<br/>");
2936                 my $comment = $co{'comment'};
2937                 foreach my $line (@$comment) {
2938                         if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
2939                                 my $lead = esc_html($1) || "";
2940                                 $lead = chop_str($lead, 30, 10);
2941                                 my $match = esc_html($2) || "";
2942                                 my $trail = esc_html($3) || "";
2943                                 $trail = chop_str($trail, 30, 10);
2944                                 my $text = "$lead<span class=\"match\">$match</span>$trail";
2945                                 print chop_str($text, 80, 5) . "<br/>\n";
2946                         }
2947                 }
2948                 print "</td>\n" .
2949                       "<td class=\"link\">" .
2950                       $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
2951                       " | " .
2952                       $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
2953                 print "</td>\n" .
2954                       "</tr>\n";
2955         }
2956         if (defined $extra) {
2957                 print "<tr>\n" .
2958                       "<td colspan=\"3\">$extra</td>\n" .
2959                       "</tr>\n";
2960         }
2961         print "</table>\n";
2962 }
2963
2964 ## ======================================================================
2965 ## ======================================================================
2966 ## actions
2967
2968 sub git_project_list {
2969         my $order = $cgi->param('o');
2970         if (defined $order && $order !~ m/project|descr|owner|age/) {
2971                 die_error(undef, "Unknown order parameter");
2972         }
2973
2974         my @list = git_get_projects_list();
2975         if (!@list) {
2976                 die_error(undef, "No projects found");
2977         }
2978
2979         git_header_html();
2980         if (-f $home_text) {
2981                 print "<div class=\"index_include\">\n";
2982                 open (my $fd, $home_text);
2983                 print <$fd>;
2984                 close $fd;
2985                 print "</div>\n";
2986         }
2987         git_project_list_body(\@list, $order);
2988         git_footer_html();
2989 }
2990
2991 sub git_forks {
2992         my $order = $cgi->param('o');
2993         if (defined $order && $order !~ m/project|descr|owner|age/) {
2994                 die_error(undef, "Unknown order parameter");
2995         }
2996
2997         my @list = git_get_projects_list($project);
2998         if (!@list) {
2999                 die_error(undef, "No forks found");
3000         }
3001
3002         git_header_html();
3003         git_print_page_nav('','');
3004         git_print_header_div('summary', "$project forks");
3005         git_project_list_body(\@list, $order);
3006         git_footer_html();
3007 }
3008
3009 sub git_project_index {
3010         my @projects = git_get_projects_list($project);
3011
3012         print $cgi->header(
3013                 -type => 'text/plain',
3014                 -charset => 'utf-8',
3015                 -content_disposition => 'inline; filename="index.aux"');
3016
3017         foreach my $pr (@projects) {
3018                 if (!exists $pr->{'owner'}) {
3019                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
3020                 }
3021
3022                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
3023                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
3024                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3025                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
3026                 $path  =~ s/ /\+/g;
3027                 $owner =~ s/ /\+/g;
3028
3029                 print "$path $owner\n";
3030         }
3031 }
3032
3033 sub git_summary {
3034         my $descr = git_get_project_description($project) || "none";
3035         my %co = parse_commit("HEAD");
3036         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3037         my $head = $co{'id'};
3038
3039         my $owner = git_get_project_owner($project);
3040
3041         my $refs = git_get_references();
3042         # These get_*_list functions return one more to allow us to see if
3043         # there are more ...
3044         my @taglist  = git_get_tags_list(16);
3045         my @headlist = git_get_heads_list(16);
3046         my @forklist;
3047         my ($check_forks) = gitweb_check_feature('forks');
3048
3049         if ($check_forks) {
3050                 @forklist = git_get_projects_list($project);
3051         }
3052
3053         git_header_html();
3054         git_print_page_nav('summary','', $head);
3055
3056         print "<div class=\"title\">&nbsp;</div>\n";
3057         print "<table cellspacing=\"0\">\n" .
3058               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
3059               "<tr><td>owner</td><td>$owner</td></tr>\n" .
3060               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
3061         # use per project git URL list in $projectroot/$project/cloneurl
3062         # or make project git URL from git base URL and project name
3063         my $url_tag = "URL";
3064         my @url_list = git_get_project_url_list($project);
3065         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
3066         foreach my $git_url (@url_list) {
3067                 next unless $git_url;
3068                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
3069                 $url_tag = "";
3070         }
3071         print "</table>\n";
3072
3073         if (-s "$projectroot/$project/README.html") {
3074                 if (open my $fd, "$projectroot/$project/README.html") {
3075                         print "<div class=\"title\">readme</div>\n";
3076                         print $_ while (<$fd>);
3077                         close $fd;
3078                 }
3079         }
3080
3081         # we need to request one more than 16 (0..15) to check if
3082         # those 16 are all
3083         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
3084                 $head, "--"
3085                 or die_error(undef, "Open git-rev-list failed");
3086         my @revlist = map { chomp; $_ } <$fd>;
3087         close $fd;
3088         git_print_header_div('shortlog');
3089         git_shortlog_body(\@revlist, 0, 15, $refs,
3090                           $#revlist <=  15 ? undef :
3091                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
3092
3093         if (@taglist) {
3094                 git_print_header_div('tags');
3095                 git_tags_body(\@taglist, 0, 15,
3096                               $#taglist <=  15 ? undef :
3097                               $cgi->a({-href => href(action=>"tags")}, "..."));
3098         }
3099
3100         if (@headlist) {
3101                 git_print_header_div('heads');
3102                 git_heads_body(\@headlist, $head, 0, 15,
3103                                $#headlist <= 15 ? undef :
3104                                $cgi->a({-href => href(action=>"heads")}, "..."));
3105         }
3106
3107         if (@forklist) {
3108                 git_print_header_div('forks');
3109                 git_project_list_body(\@forklist, undef, 0, 15,
3110                                       $#forklist <= 15 ? undef :
3111                                       $cgi->a({-href => href(action=>"forks")}, "..."),
3112                                       'noheader');
3113         }
3114
3115         git_footer_html();
3116 }
3117
3118 sub git_tag {
3119         my $head = git_get_head_hash($project);
3120         git_header_html();
3121         git_print_page_nav('','', $head,undef,$head);
3122         my %tag = parse_tag($hash);
3123         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
3124         print "<div class=\"title_text\">\n" .
3125               "<table cellspacing=\"0\">\n" .
3126               "<tr>\n" .
3127               "<td>object</td>\n" .
3128               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3129                                $tag{'object'}) . "</td>\n" .
3130               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
3131                                               $tag{'type'}) . "</td>\n" .
3132               "</tr>\n";
3133         if (defined($tag{'author'})) {
3134                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
3135                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
3136                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
3137                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
3138                         "</td></tr>\n";
3139         }
3140         print "</table>\n\n" .
3141               "</div>\n";
3142         print "<div class=\"page_body\">";
3143         my $comment = $tag{'comment'};
3144         foreach my $line (@$comment) {
3145                 chomp $line;
3146                 print esc_html($line, -nbsp=>1) . "<br/>\n";
3147         }
3148         print "</div>\n";
3149         git_footer_html();
3150 }
3151
3152 sub git_blame2 {
3153         my $fd;
3154         my $ftype;
3155
3156         my ($have_blame) = gitweb_check_feature('blame');
3157         if (!$have_blame) {
3158                 die_error('403 Permission denied', "Permission denied");
3159         }
3160         die_error('404 Not Found', "File name not defined") if (!$file_name);
3161         $hash_base ||= git_get_head_hash($project);
3162         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3163         my %co = parse_commit($hash_base)
3164                 or die_error(undef, "Reading commit failed");
3165         if (!defined $hash) {
3166                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3167                         or die_error(undef, "Error looking up file");
3168         }
3169         $ftype = git_get_type($hash);
3170         if ($ftype !~ "blob") {
3171                 die_error("400 Bad Request", "Object is not a blob");
3172         }
3173         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
3174               $file_name, $hash_base)
3175                 or die_error(undef, "Open git-blame failed");
3176         git_header_html();
3177         my $formats_nav =
3178                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3179                         "blob") .
3180                 " | " .
3181                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3182                         "history") .
3183                 " | " .
3184                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3185                         "HEAD");
3186         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3187         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3188         git_print_page_path($file_name, $ftype, $hash_base);
3189         my @rev_color = (qw(light2 dark2));
3190         my $num_colors = scalar(@rev_color);
3191         my $current_color = 0;
3192         my $last_rev;
3193         print <<HTML;
3194 <div class="page_body">
3195 <table class="blame">
3196 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
3197 HTML
3198         my %metainfo = ();
3199         while (1) {
3200                 $_ = <$fd>;
3201                 last unless defined $_;
3202                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
3203                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
3204                 if (!exists $metainfo{$full_rev}) {
3205                         $metainfo{$full_rev} = {};
3206                 }
3207                 my $meta = $metainfo{$full_rev};
3208                 while (<$fd>) {
3209                         last if (s/^\t//);
3210                         if (/^(\S+) (.*)$/) {
3211                                 $meta->{$1} = $2;
3212                         }
3213                 }
3214                 my $data = $_;
3215                 chomp $data;
3216                 my $rev = substr($full_rev, 0, 8);
3217                 my $author = $meta->{'author'};
3218                 my %date = parse_date($meta->{'author-time'},
3219                                       $meta->{'author-tz'});
3220                 my $date = $date{'iso-tz'};
3221                 if ($group_size) {
3222                         $current_color = ++$current_color % $num_colors;
3223                 }
3224                 print "<tr class=\"$rev_color[$current_color]\">\n";
3225                 if ($group_size) {
3226                         print "<td class=\"sha1\"";
3227                         print " title=\"". esc_html($author) . ", $date\"";
3228                         print " rowspan=\"$group_size\"" if ($group_size > 1);
3229                         print ">";
3230                         print $cgi->a({-href => href(action=>"commit",
3231                                                      hash=>$full_rev,
3232                                                      file_name=>$file_name)},
3233                                       esc_html($rev));
3234                         print "</td>\n";
3235                 }
3236                 my $blamed = href(action => 'blame',
3237                                   file_name => $meta->{'filename'},
3238                                   hash_base => $full_rev);
3239                 print "<td class=\"linenr\">";
3240                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
3241                                 -id => "l$lineno",
3242                                 -class => "linenr" },
3243                               esc_html($lineno));
3244                 print "</td>";
3245                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
3246                 print "</tr>\n";
3247         }
3248         print "</table>\n";
3249         print "</div>";
3250         close $fd
3251                 or print "Reading blob failed\n";
3252         git_footer_html();
3253 }
3254
3255 sub git_blame {
3256         my $fd;
3257
3258         my ($have_blame) = gitweb_check_feature('blame');
3259         if (!$have_blame) {
3260                 die_error('403 Permission denied', "Permission denied");
3261         }
3262         die_error('404 Not Found', "File name not defined") if (!$file_name);
3263         $hash_base ||= git_get_head_hash($project);
3264         die_error(undef, "Couldn't find base commit") unless ($hash_base);
3265         my %co = parse_commit($hash_base)
3266                 or die_error(undef, "Reading commit failed");
3267         if (!defined $hash) {
3268                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
3269                         or die_error(undef, "Error lookup file");
3270         }
3271         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
3272                 or die_error(undef, "Open git-annotate failed");
3273         git_header_html();
3274         my $formats_nav =
3275                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3276                         "blob") .
3277                 " | " .
3278                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
3279                         "history") .
3280                 " | " .
3281                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
3282                         "HEAD");
3283         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3284         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3285         git_print_page_path($file_name, 'blob', $hash_base);
3286         print "<div class=\"page_body\">\n";
3287         print <<HTML;
3288 <table class="blame">
3289   <tr>
3290     <th>Commit</th>
3291     <th>Age</th>
3292     <th>Author</th>
3293     <th>Line</th>
3294     <th>Data</th>
3295   </tr>
3296 HTML
3297         my @line_class = (qw(light dark));
3298         my $line_class_len = scalar (@line_class);
3299         my $line_class_num = $#line_class;
3300         while (my $line = <$fd>) {
3301                 my $long_rev;
3302                 my $short_rev;
3303                 my $author;
3304                 my $time;
3305                 my $lineno;
3306                 my $data;
3307                 my $age;
3308                 my $age_str;
3309                 my $age_class;
3310
3311                 chomp $line;
3312                 $line_class_num = ($line_class_num + 1) % $line_class_len;
3313
3314                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
3315                         $long_rev = $1;
3316                         $author   = $2;
3317                         $time     = $3;
3318                         $lineno   = $4;
3319                         $data     = $5;
3320                 } else {
3321                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
3322                         next;
3323                 }
3324                 $short_rev  = substr ($long_rev, 0, 8);
3325                 $age        = time () - $time;
3326                 $age_str    = age_string ($age);
3327                 $age_str    =~ s/ /&nbsp;/g;
3328                 $age_class  = age_class($age);
3329                 $author     = esc_html ($author);
3330                 $author     =~ s/ /&nbsp;/g;
3331
3332                 $data = untabify($data);
3333                 $data = esc_html ($data);
3334
3335                 print <<HTML;
3336   <tr class="$line_class[$line_class_num]">
3337     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
3338     <td class="$age_class">$age_str</td>
3339     <td>$author</td>
3340     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
3341     <td class="pre">$data</td>
3342   </tr>
3343 HTML
3344         } # while (my $line = <$fd>)
3345         print "</table>\n\n";
3346         close $fd
3347                 or print "Reading blob failed.\n";
3348         print "</div>";
3349         git_footer_html();
3350 }
3351
3352 sub git_tags {
3353         my $head = git_get_head_hash($project);
3354         git_header_html();
3355         git_print_page_nav('','', $head,undef,$head);
3356         git_print_header_div('summary', $project);
3357
3358         my @tagslist = git_get_tags_list();
3359         if (@tagslist) {
3360                 git_tags_body(\@tagslist);
3361         }
3362         git_footer_html();
3363 }
3364
3365 sub git_heads {
3366         my $head = git_get_head_hash($project);
3367         git_header_html();
3368         git_print_page_nav('','', $head,undef,$head);
3369         git_print_header_div('summary', $project);
3370
3371         my @headslist = git_get_heads_list();
3372         if (@headslist) {
3373                 git_heads_body(\@headslist, $head);
3374         }
3375         git_footer_html();
3376 }
3377
3378 sub git_blob_plain {
3379         my $expires;
3380
3381         if (!defined $hash) {
3382                 if (defined $file_name) {
3383                         my $base = $hash_base || git_get_head_hash($project);
3384                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3385                                 or die_error(undef, "Error lookup file");
3386                 } else {
3387                         die_error(undef, "No file name defined");
3388                 }
3389         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3390                 # blobs defined by non-textual hash id's can be cached
3391                 $expires = "+1d";
3392         }
3393
3394         my $type = shift;
3395         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3396                 or die_error(undef, "Couldn't cat $file_name, $hash");
3397
3398         $type ||= blob_mimetype($fd, $file_name);
3399
3400         # save as filename, even when no $file_name is given
3401         my $save_as = "$hash";
3402         if (defined $file_name) {
3403                 $save_as = $file_name;
3404         } elsif ($type =~ m/^text\//) {
3405                 $save_as .= '.txt';
3406         }
3407
3408         print $cgi->header(
3409                 -type => "$type",
3410                 -expires=>$expires,
3411                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
3412         undef $/;
3413         binmode STDOUT, ':raw';
3414         print <$fd>;
3415         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3416         $/ = "\n";
3417         close $fd;
3418 }
3419
3420 sub git_blob {
3421         my $expires;
3422
3423         if (!defined $hash) {
3424                 if (defined $file_name) {
3425                         my $base = $hash_base || git_get_head_hash($project);
3426                         $hash = git_get_hash_by_path($base, $file_name, "blob")
3427                                 or die_error(undef, "Error lookup file");
3428                 } else {
3429                         die_error(undef, "No file name defined");
3430                 }
3431         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3432                 # blobs defined by non-textual hash id's can be cached
3433                 $expires = "+1d";
3434         }
3435
3436         my ($have_blame) = gitweb_check_feature('blame');
3437         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
3438                 or die_error(undef, "Couldn't cat $file_name, $hash");
3439         my $mimetype = blob_mimetype($fd, $file_name);
3440         if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)!) {
3441                 close $fd;
3442                 return git_blob_plain($mimetype);
3443         }
3444         # we can have blame only for text/* mimetype
3445         $have_blame &&= ($mimetype =~ m!^text/!);
3446
3447         git_header_html(undef, $expires);
3448         my $formats_nav = '';
3449         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3450                 if (defined $file_name) {
3451                         if ($have_blame) {
3452                                 $formats_nav .=
3453                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
3454                                                                hash=>$hash, file_name=>$file_name)},
3455                                                 "blame") .
3456                                         " | ";
3457                         }
3458                         $formats_nav .=
3459                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3460                                                        hash=>$hash, file_name=>$file_name)},
3461                                         "history") .
3462                                 " | " .
3463                                 $cgi->a({-href => href(action=>"blob_plain",
3464                                                        hash=>$hash, file_name=>$file_name)},
3465                                         "raw") .
3466                                 " | " .
3467                                 $cgi->a({-href => href(action=>"blob",
3468                                                        hash_base=>"HEAD", file_name=>$file_name)},
3469                                         "HEAD");
3470                 } else {
3471                         $formats_nav .=
3472                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
3473                 }
3474                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3475                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3476         } else {
3477                 print "<div class=\"page_nav\">\n" .
3478                       "<br/><br/></div>\n" .
3479                       "<div class=\"title\">$hash</div>\n";
3480         }
3481         git_print_page_path($file_name, "blob", $hash_base);
3482         print "<div class=\"page_body\">\n";
3483         if ($mimetype =~ m!^text/!) {
3484                 my $nr;
3485                 while (my $line = <$fd>) {
3486                         chomp $line;
3487                         $nr++;
3488                         $line = untabify($line);
3489                         printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
3490                                $nr, $nr, $nr, esc_html($line, -nbsp=>1);
3491                 }
3492         } elsif ($mimetype =~ m!^image/!) {
3493                 print qq!<img type="$mimetype"!;
3494                 if ($file_name) {
3495                         print qq! alt="$file_name" title="$file_name"!;
3496                 }
3497                 print qq! src="! .
3498                       href(action=>"blob_plain", hash=>$hash,
3499                            hash_base=>$hash_base, file_name=>$file_name) .
3500                       qq!" />\n!;
3501         }
3502         close $fd
3503                 or print "Reading blob failed.\n";
3504         print "</div>";
3505         git_footer_html();
3506 }
3507
3508 sub git_tree {
3509         my $have_snapshot = gitweb_have_snapshot();
3510
3511         if (!defined $hash_base) {
3512                 $hash_base = "HEAD";
3513         }
3514         if (!defined $hash) {
3515                 if (defined $file_name) {
3516                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
3517                 } else {
3518                         $hash = $hash_base;
3519                 }
3520         }
3521         $/ = "\0";
3522         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
3523                 or die_error(undef, "Open git-ls-tree failed");
3524         my @entries = map { chomp; $_ } <$fd>;
3525         close $fd or die_error(undef, "Reading tree failed");
3526         $/ = "\n";
3527
3528         my $refs = git_get_references();
3529         my $ref = format_ref_marker($refs, $hash_base);
3530         git_header_html();
3531         my $basedir = '';
3532         my ($have_blame) = gitweb_check_feature('blame');
3533         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3534                 my @views_nav = ();
3535                 if (defined $file_name) {
3536                         push @views_nav,
3537                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
3538                                                        hash=>$hash, file_name=>$file_name)},
3539                                         "history"),
3540                                 $cgi->a({-href => href(action=>"tree",
3541                                                        hash_base=>"HEAD", file_name=>$file_name)},
3542                                         "HEAD"),
3543                 }
3544                 if ($have_snapshot) {
3545                         # FIXME: Should be available when we have no hash base as well.
3546                         push @views_nav,
3547                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
3548                                         "snapshot");
3549                 }
3550                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
3551                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
3552         } else {
3553                 undef $hash_base;
3554                 print "<div class=\"page_nav\">\n";
3555                 print "<br/><br/></div>\n";
3556                 print "<div class=\"title\">$hash</div>\n";
3557         }
3558         if (defined $file_name) {
3559                 $basedir = $file_name;
3560                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
3561                         $basedir .= '/';
3562                 }
3563         }
3564         git_print_page_path($file_name, 'tree', $hash_base);
3565         print "<div class=\"page_body\">\n";
3566         print "<table cellspacing=\"0\">\n";
3567         my $alternate = 1;
3568         # '..' (top directory) link if possible
3569         if (defined $hash_base &&
3570             defined $file_name && $file_name =~ m![^/]+$!) {
3571                 if ($alternate) {
3572                         print "<tr class=\"dark\">\n";
3573                 } else {
3574                         print "<tr class=\"light\">\n";
3575                 }
3576                 $alternate ^= 1;
3577
3578                 my $up = $file_name;
3579                 $up =~ s!/?[^/]+$!!;
3580                 undef $up unless $up;
3581                 # based on git_print_tree_entry
3582                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3583                 print '<td class="list">';
3584                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3585                                              file_name=>$up)},
3586                               "..");
3587                 print "</td>\n";
3588                 print "<td class=\"link\"></td>\n";
3589
3590                 print "</tr>\n";
3591         }
3592         foreach my $line (@entries) {
3593                 my %t = parse_ls_tree_line($line, -z => 1);
3594
3595                 if ($alternate) {
3596                         print "<tr class=\"dark\">\n";
3597                 } else {
3598                         print "<tr class=\"light\">\n";
3599                 }
3600                 $alternate ^= 1;
3601
3602                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3603
3604                 print "</tr>\n";
3605         }
3606         print "</table>\n" .
3607               "</div>";
3608         git_footer_html();
3609 }
3610
3611 sub git_snapshot {
3612         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3613         my $have_snapshot = (defined $ctype && defined $suffix);
3614         if (!$have_snapshot) {
3615                 die_error('403 Permission denied', "Permission denied");
3616         }
3617
3618         if (!defined $hash) {
3619                 $hash = git_get_head_hash($project);
3620         }
3621
3622         my $filename = basename($project) . "-$hash.tar.$suffix";
3623
3624         print $cgi->header(
3625                 -type => "application/$ctype",
3626                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3627                 -status => '200 OK');
3628
3629         my $git = git_cmd_str();
3630         my $name = $project;
3631         $name =~ s/\047/\047\\\047\047/g;
3632         open my $fd, "-|",
3633         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3634                 or die_error(undef, "Execute git-tar-tree failed.");
3635         binmode STDOUT, ':raw';
3636         print <$fd>;
3637         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3638         close $fd;
3639
3640 }
3641
3642 sub git_log {
3643         my $head = git_get_head_hash($project);
3644         if (!defined $hash) {
3645                 $hash = $head;
3646         }
3647         if (!defined $page) {
3648                 $page = 0;
3649         }
3650         my $refs = git_get_references();
3651
3652         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3653         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
3654                 or die_error(undef, "Open git-rev-list failed");
3655         my @revlist = map { chomp; $_ } <$fd>;
3656         close $fd;
3657
3658         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3659
3660         git_header_html();
3661         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3662
3663         if (!@revlist) {
3664                 my %co = parse_commit($hash);
3665
3666                 git_print_header_div('summary', $project);
3667                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3668         }
3669         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3670                 my $commit = $revlist[$i];
3671                 my $ref = format_ref_marker($refs, $commit);
3672                 my %co = parse_commit($commit);
3673                 next if !%co;
3674                 my %ad = parse_date($co{'author_epoch'});
3675                 git_print_header_div('commit',
3676                                "<span class=\"age\">$co{'age_string'}</span>" .
3677                                esc_html($co{'title'}) . $ref,
3678                                $commit);
3679                 print "<div class=\"title_text\">\n" .
3680                       "<div class=\"log_link\">\n" .
3681                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3682                       " | " .
3683                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3684                       " | " .
3685                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3686                       "<br/>\n" .
3687                       "</div>\n" .
3688                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3689                       "</div>\n";
3690
3691                 print "<div class=\"log_body\">\n";
3692                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3693                 print "</div>\n";
3694         }
3695         git_footer_html();
3696 }
3697
3698 sub git_commit {
3699         $hash ||= $hash_base || "HEAD";
3700         my %co = parse_commit($hash);
3701         if (!%co) {
3702                 die_error(undef, "Unknown commit object");
3703         }
3704         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3705         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3706
3707         my $parent  = $co{'parent'};
3708         my $parents = $co{'parents'}; # listref
3709
3710         # we need to prepare $formats_nav before any parameter munging
3711         my $formats_nav;
3712         if (!defined $parent) {
3713                 # --root commitdiff
3714                 $formats_nav .= '(initial)';
3715         } elsif (@$parents == 1) {
3716                 # single parent commit
3717                 $formats_nav .=
3718                         '(parent: ' .
3719                         $cgi->a({-href => href(action=>"commit",
3720                                                hash=>$parent)},
3721                                 esc_html(substr($parent, 0, 7))) .
3722                         ')';
3723         } else {
3724                 # merge commit
3725                 $formats_nav .=
3726                         '(merge: ' .
3727                         join(' ', map {
3728                                 $cgi->a({-href => href(action=>"commitdiff",
3729                                                        hash=>$_)},
3730                                         esc_html(substr($_, 0, 7)));
3731                         } @$parents ) .
3732                         ')';
3733         }
3734
3735         if (!defined $parent) {
3736                 $parent = "--root";
3737         }
3738         my @difftree;
3739         if (@$parents <= 1) {
3740                 # difftree output is not printed for merges
3741                 open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3742                         @diff_opts, $parent, $hash, "--"
3743                                 or die_error(undef, "Open git-diff-tree failed");
3744                 @difftree = map { chomp; $_ } <$fd>;
3745                 close $fd or die_error(undef, "Reading git-diff-tree failed");
3746         }
3747
3748         # non-textual hash id's can be cached
3749         my $expires;
3750         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3751                 $expires = "+1d";
3752         }
3753         my $refs = git_get_references();
3754         my $ref = format_ref_marker($refs, $co{'id'});
3755
3756         my $have_snapshot = gitweb_have_snapshot();
3757
3758         git_header_html(undef, $expires);
3759         git_print_page_nav('commit', '',
3760                            $hash, $co{'tree'}, $hash,
3761                            $formats_nav);
3762
3763         if (defined $co{'parent'}) {
3764                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3765         } else {
3766                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3767         }
3768         print "<div class=\"title_text\">\n" .
3769               "<table cellspacing=\"0\">\n";
3770         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3771               "<tr>" .
3772               "<td></td><td> $ad{'rfc2822'}";
3773         if ($ad{'hour_local'} < 6) {
3774                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3775                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3776         } else {
3777                 printf(" (%02d:%02d %s)",
3778                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3779         }
3780         print "</td>" .
3781               "</tr>\n";
3782         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3783         print "<tr><td></td><td> $cd{'rfc2822'}" .
3784               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3785               "</td></tr>\n";
3786         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3787         print "<tr>" .
3788               "<td>tree</td>" .
3789               "<td class=\"sha1\">" .
3790               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3791                        class => "list"}, $co{'tree'}) .
3792               "</td>" .
3793               "<td class=\"link\">" .
3794               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3795                       "tree");
3796         if ($have_snapshot) {
3797                 print " | " .
3798                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3799         }
3800         print "</td>" .
3801               "</tr>\n";
3802
3803         foreach my $par (@$parents) {
3804                 print "<tr>" .
3805                       "<td>parent</td>" .
3806                       "<td class=\"sha1\">" .
3807                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3808                                class => "list"}, $par) .
3809                       "</td>" .
3810                       "<td class=\"link\">" .
3811                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3812                       " | " .
3813                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3814                       "</td>" .
3815                       "</tr>\n";
3816         }
3817         print "</table>".
3818               "</div>\n";
3819
3820         print "<div class=\"page_body\">\n";
3821         git_print_log($co{'comment'});
3822         print "</div>\n";
3823
3824         if (@$parents <= 1) {
3825                 # do not output difftree/whatchanged for merges
3826                 git_difftree_body(\@difftree, $hash, $parent);
3827         }
3828
3829         git_footer_html();
3830 }
3831
3832 sub git_object {
3833         # object is defined by:
3834         # - hash or hash_base alone
3835         # - hash_base and file_name
3836         my $type;
3837
3838         # - hash or hash_base alone
3839         if ($hash || ($hash_base && !defined $file_name)) {
3840                 my $object_id = $hash || $hash_base;
3841
3842                 my $git_command = git_cmd_str();
3843                 open my $fd, "-|", "$git_command cat-file -t $object_id 2>/dev/null"
3844                         or die_error('404 Not Found', "Object does not exist");
3845                 $type = <$fd>;
3846                 chomp $type;
3847                 close $fd
3848                         or die_error('404 Not Found', "Object does not exist");
3849
3850         # - hash_base and file_name
3851         } elsif ($hash_base && defined $file_name) {
3852                 $file_name =~ s,/+$,,;
3853
3854                 system(git_cmd(), "cat-file", '-e', $hash_base) == 0
3855                         or die_error('404 Not Found', "Base object does not exist");
3856
3857                 # here errors should not hapen
3858                 open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
3859                         or die_error(undef, "Open git-ls-tree failed");
3860                 my $line = <$fd>;
3861                 close $fd;
3862
3863                 #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
3864                 unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
3865                         die_error('404 Not Found', "File or directory for given base does not exist");
3866                 }
3867                 $type = $2;
3868                 $hash = $3;
3869         } else {
3870                 die_error('404 Not Found', "Not enough information to find object");
3871         }
3872
3873         print $cgi->redirect(-uri => href(action=>$type, -full=>1,
3874                                           hash=>$hash, hash_base=>$hash_base,
3875                                           file_name=>$file_name),
3876                              -status => '302 Found');
3877 }
3878
3879 sub git_blobdiff {
3880         my $format = shift || 'html';
3881
3882         my $fd;
3883         my @difftree;
3884         my %diffinfo;
3885         my $expires;
3886
3887         # preparing $fd and %diffinfo for git_patchset_body
3888         # new style URI
3889         if (defined $hash_base && defined $hash_parent_base) {
3890                 if (defined $file_name) {
3891                         # read raw output
3892                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3893                                 $hash_parent_base, $hash_base,
3894                                 "--", $file_name
3895                                 or die_error(undef, "Open git-diff-tree failed");
3896                         @difftree = map { chomp; $_ } <$fd>;
3897                         close $fd
3898                                 or die_error(undef, "Reading git-diff-tree failed");
3899                         @difftree
3900                                 or die_error('404 Not Found', "Blob diff not found");
3901
3902                 } elsif (defined $hash &&
3903                          $hash =~ /[0-9a-fA-F]{40}/) {
3904                         # try to find filename from $hash
3905
3906                         # read filtered raw output
3907                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3908                                 $hash_parent_base, $hash_base, "--"
3909                                 or die_error(undef, "Open git-diff-tree failed");
3910                         @difftree =
3911                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3912                                 # $hash == to_id
3913                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3914                                 map { chomp; $_ } <$fd>;
3915                         close $fd
3916                                 or die_error(undef, "Reading git-diff-tree failed");
3917                         @difftree
3918                                 or die_error('404 Not Found', "Blob diff not found");
3919
3920                 } else {
3921                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3922                 }
3923
3924                 if (@difftree > 1) {
3925                         die_error('404 Not Found', "Ambiguous blob diff specification");
3926                 }
3927
3928                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3929                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3930                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3931
3932                 $hash_parent ||= $diffinfo{'from_id'};
3933                 $hash        ||= $diffinfo{'to_id'};
3934
3935                 # non-textual hash id's can be cached
3936                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3937                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3938                         $expires = '+1d';
3939                 }
3940
3941                 # open patch output
3942                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3943                         '-p', $hash_parent_base, $hash_base,
3944                         "--", $file_name
3945                         or die_error(undef, "Open git-diff-tree failed");
3946         }
3947
3948         # old/legacy style URI
3949         if (!%diffinfo && # if new style URI failed
3950             defined $hash && defined $hash_parent) {
3951                 # fake git-diff-tree raw output
3952                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3953                 $diffinfo{'from_id'} = $hash_parent;
3954                 $diffinfo{'to_id'}   = $hash;
3955                 if (defined $file_name) {
3956                         if (defined $file_parent) {
3957                                 $diffinfo{'status'} = '2';
3958                                 $diffinfo{'from_file'} = $file_parent;
3959                                 $diffinfo{'to_file'}   = $file_name;
3960                         } else { # assume not renamed
3961                                 $diffinfo{'status'} = '1';
3962                                 $diffinfo{'from_file'} = $file_name;
3963                                 $diffinfo{'to_file'}   = $file_name;
3964                         }
3965                 } else { # no filename given
3966                         $diffinfo{'status'} = '2';
3967                         $diffinfo{'from_file'} = $hash_parent;
3968                         $diffinfo{'to_file'}   = $hash;
3969                 }
3970
3971                 # non-textual hash id's can be cached
3972                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3973                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3974                         $expires = '+1d';
3975                 }
3976
3977                 # open patch output
3978                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts,
3979                         $hash_parent, $hash, "--"
3980                         or die_error(undef, "Open git-diff failed");
3981         } else  {
3982                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3983                         unless %diffinfo;
3984         }
3985
3986         # header
3987         if ($format eq 'html') {
3988                 my $formats_nav =
3989                         $cgi->a({-href => href(action=>"blobdiff_plain",
3990                                                hash=>$hash, hash_parent=>$hash_parent,
3991                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3992                                                file_name=>$file_name, file_parent=>$file_parent)},
3993                                 "raw");
3994                 git_header_html(undef, $expires);
3995                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3996                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3997                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3998                 } else {
3999                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
4000                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
4001                 }
4002                 if (defined $file_name) {
4003                         git_print_page_path($file_name, "blob", $hash_base);
4004                 } else {
4005                         print "<div class=\"page_path\"></div>\n";
4006                 }
4007
4008         } elsif ($format eq 'plain') {
4009                 print $cgi->header(
4010                         -type => 'text/plain',
4011                         -charset => 'utf-8',
4012                         -expires => $expires,
4013                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
4014
4015                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4016
4017         } else {
4018                 die_error(undef, "Unknown blobdiff format");
4019         }
4020
4021         # patch
4022         if ($format eq 'html') {
4023                 print "<div class=\"page_body\">\n";
4024
4025                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
4026                 close $fd;
4027
4028                 print "</div>\n"; # class="page_body"
4029                 git_footer_html();
4030
4031         } else {
4032                 while (my $line = <$fd>) {
4033                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
4034                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
4035
4036                         print $line;
4037
4038                         last if $line =~ m!^\+\+\+!;
4039                 }
4040                 local $/ = undef;
4041                 print <$fd>;
4042                 close $fd;
4043         }
4044 }
4045
4046 sub git_blobdiff_plain {
4047         git_blobdiff('plain');
4048 }
4049
4050 sub git_commitdiff {
4051         my $format = shift || 'html';
4052         $hash ||= $hash_base || "HEAD";
4053         my %co = parse_commit($hash);
4054         if (!%co) {
4055                 die_error(undef, "Unknown commit object");
4056         }
4057
4058         # we need to prepare $formats_nav before any parameter munging
4059         my $formats_nav;
4060         if ($format eq 'html') {
4061                 $formats_nav =
4062                         $cgi->a({-href => href(action=>"commitdiff_plain",
4063                                                hash=>$hash, hash_parent=>$hash_parent)},
4064                                 "raw");
4065
4066                 if (defined $hash_parent) {
4067                         # commitdiff with two commits given
4068                         my $hash_parent_short = $hash_parent;
4069                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
4070                                 $hash_parent_short = substr($hash_parent, 0, 7);
4071                         }
4072                         $formats_nav .=
4073                                 ' (from: ' .
4074                                 $cgi->a({-href => href(action=>"commitdiff",
4075                                                        hash=>$hash_parent)},
4076                                         esc_html($hash_parent_short)) .
4077                                 ')';
4078                 } elsif (!$co{'parent'}) {
4079                         # --root commitdiff
4080                         $formats_nav .= ' (initial)';
4081                 } elsif (scalar @{$co{'parents'}} == 1) {
4082                         # single parent commit
4083                         $formats_nav .=
4084                                 ' (parent: ' .
4085                                 $cgi->a({-href => href(action=>"commitdiff",
4086                                                        hash=>$co{'parent'})},
4087                                         esc_html(substr($co{'parent'}, 0, 7))) .
4088                                 ')';
4089                 } else {
4090                         # merge commit
4091                         $formats_nav .=
4092                                 ' (merge: ' .
4093                                 join(' ', map {
4094                                         $cgi->a({-href => href(action=>"commitdiff",
4095                                                                hash=>$_)},
4096                                                 esc_html(substr($_, 0, 7)));
4097                                 } @{$co{'parents'}} ) .
4098                                 ')';
4099                 }
4100         }
4101
4102         if (!defined $hash_parent) {
4103                 $hash_parent = $co{'parent'} || '--root';
4104         }
4105
4106         # read commitdiff
4107         my $fd;
4108         my @difftree;
4109         if ($format eq 'html') {
4110                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4111                         "--no-commit-id", "--patch-with-raw", "--full-index",
4112                         $hash_parent, $hash, "--"
4113                         or die_error(undef, "Open git-diff-tree failed");
4114
4115                 while (my $line = <$fd>) {
4116                         chomp $line;
4117                         # empty line ends raw part of diff-tree output
4118                         last unless $line;
4119                         push @difftree, $line;
4120                 }
4121
4122         } elsif ($format eq 'plain') {
4123                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4124                         '-p', $hash_parent, $hash, "--"
4125                         or die_error(undef, "Open git-diff-tree failed");
4126
4127         } else {
4128                 die_error(undef, "Unknown commitdiff format");
4129         }
4130
4131         # non-textual hash id's can be cached
4132         my $expires;
4133         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
4134                 $expires = "+1d";
4135         }
4136
4137         # write commit message
4138         if ($format eq 'html') {
4139                 my $refs = git_get_references();
4140                 my $ref = format_ref_marker($refs, $co{'id'});
4141
4142                 git_header_html(undef, $expires);
4143                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
4144                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
4145                 git_print_authorship(\%co);
4146                 print "<div class=\"page_body\">\n";
4147                 if (@{$co{'comment'}} > 1) {
4148                         print "<div class=\"log\">\n";
4149                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
4150                         print "</div>\n"; # class="log"
4151                 }
4152
4153         } elsif ($format eq 'plain') {
4154                 my $refs = git_get_references("tags");
4155                 my $tagname = git_get_rev_name_tags($hash);
4156                 my $filename = basename($project) . "-$hash.patch";
4157
4158                 print $cgi->header(
4159                         -type => 'text/plain',
4160                         -charset => 'utf-8',
4161                         -expires => $expires,
4162                         -content_disposition => 'inline; filename="' . "$filename" . '"');
4163                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
4164                 print <<TEXT;
4165 From: $co{'author'}
4166 Date: $ad{'rfc2822'} ($ad{'tz_local'})
4167 Subject: $co{'title'}
4168 TEXT
4169                 print "X-Git-Tag: $tagname\n" if $tagname;
4170                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
4171
4172                 foreach my $line (@{$co{'comment'}}) {
4173                         print "$line\n";
4174                 }
4175                 print "---\n\n";
4176         }
4177
4178         # write patch
4179         if ($format eq 'html') {
4180                 git_difftree_body(\@difftree, $hash, $hash_parent);
4181                 print "<br/>\n";
4182
4183                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
4184                 close $fd;
4185                 print "</div>\n"; # class="page_body"
4186                 git_footer_html();
4187
4188         } elsif ($format eq 'plain') {
4189                 local $/ = undef;
4190                 print <$fd>;
4191                 close $fd
4192                         or print "Reading git-diff-tree failed\n";
4193         }
4194 }
4195
4196 sub git_commitdiff_plain {
4197         git_commitdiff('plain');
4198 }
4199
4200 sub git_history {
4201         if (!defined $hash_base) {
4202                 $hash_base = git_get_head_hash($project);
4203         }
4204         if (!defined $page) {
4205                 $page = 0;
4206         }
4207         my $ftype;
4208         my %co = parse_commit($hash_base);
4209         if (!%co) {
4210                 die_error(undef, "Unknown commit object");
4211         }
4212
4213         my $refs = git_get_references();
4214         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4215
4216         if (!defined $hash && defined $file_name) {
4217                 $hash = git_get_hash_by_path($hash_base, $file_name);
4218         }
4219         if (defined $hash) {
4220                 $ftype = git_get_type($hash);
4221         }
4222
4223         open my $fd, "-|",
4224                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
4225                         or die_error(undef, "Open git-rev-list-failed");
4226         my @revlist = map { chomp; $_ } <$fd>;
4227         close $fd
4228                 or die_error(undef, "Reading git-rev-list failed");
4229
4230         my $paging_nav = '';
4231         if ($page > 0) {
4232                 $paging_nav .=
4233                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4234                                                file_name=>$file_name)},
4235                                 "first");
4236                 $paging_nav .= " &sdot; " .
4237                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4238                                                file_name=>$file_name, page=>$page-1),
4239                                  -accesskey => "p", -title => "Alt-p"}, "prev");
4240         } else {
4241                 $paging_nav .= "first";
4242                 $paging_nav .= " &sdot; prev";
4243         }
4244         if ($#revlist >= (100 * ($page+1)-1)) {
4245                 $paging_nav .= " &sdot; " .
4246                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4247                                                file_name=>$file_name, page=>$page+1),
4248                                  -accesskey => "n", -title => "Alt-n"}, "next");
4249         } else {
4250                 $paging_nav .= " &sdot; next";
4251         }
4252         my $next_link = '';
4253         if ($#revlist >= (100 * ($page+1)-1)) {
4254                 $next_link =
4255                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
4256                                                file_name=>$file_name, page=>$page+1),
4257                                  -title => "Alt-n"}, "next");
4258         }
4259
4260         git_header_html();
4261         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
4262         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
4263         git_print_page_path($file_name, $ftype, $hash_base);
4264
4265         git_history_body(\@revlist, ($page * 100), $#revlist,
4266                          $refs, $hash_base, $ftype, $next_link);
4267
4268         git_footer_html();
4269 }
4270
4271 sub git_search {
4272         my ($have_search) = gitweb_check_feature('search');
4273         if (!$have_search) {
4274                 die_error('403 Permission denied', "Permission denied");
4275         }
4276         if (!defined $searchtext) {
4277                 die_error(undef, "Text field empty");
4278         }
4279         if (!defined $hash) {
4280                 $hash = git_get_head_hash($project);
4281         }
4282         my %co = parse_commit($hash);
4283         if (!%co) {
4284                 die_error(undef, "Unknown commit object");
4285         }
4286         if (!defined $page) {
4287                 $page = 0;
4288         }
4289
4290         $searchtype ||= 'commit';
4291         if ($searchtype eq 'pickaxe') {
4292                 # pickaxe may take all resources of your box and run for several minutes
4293                 # with every query - so decide by yourself how public you make this feature
4294                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4295                 if (!$have_pickaxe) {
4296                         die_error('403 Permission denied', "Permission denied");
4297                 }
4298         }
4299
4300         git_header_html();
4301
4302         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
4303                 my $greptype;
4304                 if ($searchtype eq 'commit') {
4305                         $greptype = "--grep=";
4306                 } elsif ($searchtype eq 'author') {
4307                         $greptype = "--author=";
4308                 } elsif ($searchtype eq 'committer') {
4309                         $greptype = "--committer=";
4310                 }
4311                 open my $fd, "-|", git_cmd(), "rev-list",
4312                         ("--max-count=" . (100 * ($page+1))),
4313                         ($greptype . $searchtext),
4314                         $hash, "--"
4315                         or next;
4316                 my @revlist = map { chomp; $_ } <$fd>;
4317                 close $fd;
4318
4319                 my $paging_nav = '';
4320                 if ($page > 0) {
4321                         $paging_nav .=
4322                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4323                                                        searchtext=>$searchtext, searchtype=>$searchtype)},
4324                                         "first");
4325                         $paging_nav .= " &sdot; " .
4326                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4327                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4328                                                        page=>$page-1),
4329                                          -accesskey => "p", -title => "Alt-p"}, "prev");
4330                 } else {
4331                         $paging_nav .= "first";
4332                         $paging_nav .= " &sdot; prev";
4333                 }
4334                 if ($#revlist >= (100 * ($page+1)-1)) {
4335                         $paging_nav .= " &sdot; " .
4336                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4337                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4338                                                        page=>$page+1),
4339                                          -accesskey => "n", -title => "Alt-n"}, "next");
4340                 } else {
4341                         $paging_nav .= " &sdot; next";
4342                 }
4343                 my $next_link = '';
4344                 if ($#revlist >= (100 * ($page+1)-1)) {
4345                         $next_link =
4346                                 $cgi->a({-href => href(action=>"search", hash=>$hash,
4347                                                        searchtext=>$searchtext, searchtype=>$searchtype,
4348                                                        page=>$page+1),
4349                                          -accesskey => "n", -title => "Alt-n"}, "next");
4350                 }
4351
4352                 git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
4353                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4354                 git_search_grep_body(\@revlist, ($page * 100), $#revlist, $next_link);
4355         }
4356
4357         if ($searchtype eq 'pickaxe') {
4358                 git_print_page_nav('','', $hash,$co{'tree'},$hash);
4359                 git_print_header_div('commit', esc_html($co{'title'}), $hash);
4360
4361                 print "<table cellspacing=\"0\">\n";
4362                 my $alternate = 1;
4363                 $/ = "\n";
4364                 my $git_command = git_cmd_str();
4365                 open my $fd, "-|", "$git_command rev-list $hash | " .
4366                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
4367                 undef %co;
4368                 my @files;
4369                 while (my $line = <$fd>) {
4370                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
4371                                 my %set;
4372                                 $set{'file'} = $6;
4373                                 $set{'from_id'} = $3;
4374                                 $set{'to_id'} = $4;
4375                                 $set{'id'} = $set{'to_id'};
4376                                 if ($set{'id'} =~ m/0{40}/) {
4377                                         $set{'id'} = $set{'from_id'};
4378                                 }
4379                                 if ($set{'id'} =~ m/0{40}/) {
4380                                         next;
4381                                 }
4382                                 push @files, \%set;
4383                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
4384                                 if (%co) {
4385                                         if ($alternate) {
4386                                                 print "<tr class=\"dark\">\n";
4387                                         } else {
4388                                                 print "<tr class=\"light\">\n";
4389                                         }
4390                                         $alternate ^= 1;
4391                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
4392                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
4393                                               "<td>" .
4394                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
4395                                                       -class => "list subject"},
4396                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
4397                                         while (my $setref = shift @files) {
4398                                                 my %set = %$setref;
4399                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
4400                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
4401                                                               -class => "list"},
4402                                                               "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
4403                                                       "<br/>\n";
4404                                         }
4405                                         print "</td>\n" .
4406                                               "<td class=\"link\">" .
4407                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
4408                                               " | " .
4409                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
4410                                         print "</td>\n" .
4411                                               "</tr>\n";
4412                                 }
4413                                 %co = parse_commit($1);
4414                         }
4415                 }
4416                 close $fd;
4417
4418                 print "</table>\n";
4419         }
4420         git_footer_html();
4421 }
4422
4423 sub git_search_help {
4424         git_header_html();
4425         git_print_page_nav('','', $hash,$hash,$hash);
4426         print <<EOT;
4427 <dl>
4428 <dt><b>commit</b></dt>
4429 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
4430 <dt><b>author</b></dt>
4431 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
4432 <dt><b>committer</b></dt>
4433 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
4434 EOT
4435         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
4436         if ($have_pickaxe) {
4437                 print <<EOT;
4438 <dt><b>pickaxe</b></dt>
4439 <dd>All commits that caused the string to appear or disappear from any file (changes that
4440 added, removed or "modified" the string) will be listed. This search can take a while and
4441 takes a lot of strain on the server, so please use it wisely.</dd>
4442 EOT
4443         }
4444         print "</dl>\n";
4445         git_footer_html();
4446 }
4447
4448 sub git_shortlog {
4449         my $head = git_get_head_hash($project);
4450         if (!defined $hash) {
4451                 $hash = $head;
4452         }
4453         if (!defined $page) {
4454                 $page = 0;
4455         }
4456         my $refs = git_get_references();
4457
4458         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
4459         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash, "--"
4460                 or die_error(undef, "Open git-rev-list failed");
4461         my @revlist = map { chomp; $_ } <$fd>;
4462         close $fd;
4463
4464         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
4465         my $next_link = '';
4466         if ($#revlist >= (100 * ($page+1)-1)) {
4467                 $next_link =
4468                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
4469                                  -title => "Alt-n"}, "next");
4470         }
4471
4472
4473         git_header_html();
4474         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
4475         git_print_header_div('summary', $project);
4476
4477         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
4478
4479         git_footer_html();
4480 }
4481
4482 ## ......................................................................
4483 ## feeds (RSS, Atom; OPML)
4484
4485 sub git_feed {
4486         my $format = shift || 'atom';
4487         my ($have_blame) = gitweb_check_feature('blame');
4488
4489         # Atom: http://www.atomenabled.org/developers/syndication/
4490         # RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
4491         if ($format ne 'rss' && $format ne 'atom') {
4492                 die_error(undef, "Unknown web feed format");
4493         }
4494
4495         # log/feed of current (HEAD) branch, log of given branch, history of file/directory
4496         my $head = $hash || 'HEAD';
4497         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150",
4498                 $head, "--", (defined $file_name ? $file_name : ())
4499                 or die_error(undef, "Open git-rev-list failed");
4500         my @revlist = map { chomp; $_ } <$fd>;
4501         close $fd or die_error(undef, "Reading git-rev-list failed");
4502
4503         my %latest_commit;
4504         my %latest_date;
4505         my $content_type = "application/$format+xml";
4506         if (defined $cgi->http('HTTP_ACCEPT') &&
4507                  $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
4508                 # browser (feed reader) prefers text/xml
4509                 $content_type = 'text/xml';
4510         }
4511         if (defined($revlist[0])) {
4512                 %latest_commit = parse_commit($revlist[0]);
4513                 %latest_date   = parse_date($latest_commit{'author_epoch'});
4514                 print $cgi->header(
4515                         -type => $content_type,
4516                         -charset => 'utf-8',
4517                         -last_modified => $latest_date{'rfc2822'});
4518         } else {
4519                 print $cgi->header(
4520                         -type => $content_type,
4521                         -charset => 'utf-8');
4522         }
4523
4524         # Optimization: skip generating the body if client asks only
4525         # for Last-Modified date.
4526         return if ($cgi->request_method() eq 'HEAD');
4527
4528         # header variables
4529         my $title = "$site_name - $project/$action";
4530         my $feed_type = 'log';
4531         if (defined $hash) {
4532                 $title .= " - '$hash'";
4533                 $feed_type = 'branch log';
4534                 if (defined $file_name) {
4535                         $title .= " :: $file_name";
4536                         $feed_type = 'history';
4537                 }
4538         } elsif (defined $file_name) {
4539                 $title .= " - $file_name";
4540                 $feed_type = 'history';
4541         }
4542         $title .= " $feed_type";
4543         my $descr = git_get_project_description($project);
4544         if (defined $descr) {
4545                 $descr = esc_html($descr);
4546         } else {
4547                 $descr = "$project " .
4548                          ($format eq 'rss' ? 'RSS' : 'Atom') .
4549                          " feed";
4550         }
4551         my $owner = git_get_project_owner($project);
4552         $owner = esc_html($owner);
4553
4554         #header
4555         my $alt_url;
4556         if (defined $file_name) {
4557                 $alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
4558         } elsif (defined $hash) {
4559                 $alt_url = href(-full=>1, action=>"log", hash=>$hash);
4560         } else {
4561                 $alt_url = href(-full=>1, action=>"summary");
4562         }
4563         print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
4564         if ($format eq 'rss') {
4565                 print <<XML;
4566 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
4567 <channel>
4568 XML
4569                 print "<title>$title</title>\n" .
4570                       "<link>$alt_url</link>\n" .
4571                       "<description>$descr</description>\n" .
4572                       "<language>en</language>\n";
4573         } elsif ($format eq 'atom') {
4574                 print <<XML;
4575 <feed xmlns="http://www.w3.org/2005/Atom">
4576 XML
4577                 print "<title>$title</title>\n" .
4578                       "<subtitle>$descr</subtitle>\n" .
4579                       '<link rel="alternate" type="text/html" href="' .
4580                       $alt_url . '" />' . "\n" .
4581                       '<link rel="self" type="' . $content_type . '" href="' .
4582                       $cgi->self_url() . '" />' . "\n" .
4583                       "<id>" . href(-full=>1) . "</id>\n" .
4584                       # use project owner for feed author
4585                       "<author><name>$owner</name></author>\n";
4586                 if (defined $favicon) {
4587                         print "<icon>" . esc_url($favicon) . "</icon>\n";
4588                 }
4589                 if (defined $logo_url) {
4590                         # not twice as wide as tall: 72 x 27 pixels
4591                         print "<logo>" . esc_url($logo) . "</logo>\n";
4592                 }
4593                 if (! %latest_date) {
4594                         # dummy date to keep the feed valid until commits trickle in:
4595                         print "<updated>1970-01-01T00:00:00Z</updated>\n";
4596                 } else {
4597                         print "<updated>$latest_date{'iso-8601'}</updated>\n";
4598                 }
4599         }
4600
4601         # contents
4602         for (my $i = 0; $i <= $#revlist; $i++) {
4603                 my $commit = $revlist[$i];
4604                 my %co = parse_commit($commit);
4605                 # we read 150, we always show 30 and the ones more recent than 48 hours
4606                 if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
4607                         last;
4608                 }
4609                 my %cd = parse_date($co{'author_epoch'});
4610
4611                 # get list of changed files
4612                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
4613                         $co{'parent'}, $co{'id'}, "--", (defined $file_name ? $file_name : ())
4614                         or next;
4615                 my @difftree = map { chomp; $_ } <$fd>;
4616                 close $fd
4617                         or next;
4618
4619                 # print element (entry, item)
4620                 my $co_url = href(-full=>1, action=>"commit", hash=>$commit);
4621                 if ($format eq 'rss') {
4622                         print "<item>\n" .
4623                               "<title>" . esc_html($co{'title'}) . "</title>\n" .
4624                               "<author>" . esc_html($co{'author'}) . "</author>\n" .
4625                               "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
4626                               "<guid isPermaLink=\"true\">$co_url</guid>\n" .
4627                               "<link>$co_url</link>\n" .
4628                               "<description>" . esc_html($co{'title'}) . "</description>\n" .
4629                               "<content:encoded>" .
4630                               "<![CDATA[\n";
4631                 } elsif ($format eq 'atom') {
4632                         print "<entry>\n" .
4633                               "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
4634                               "<updated>$cd{'iso-8601'}</updated>\n" .
4635                               "<author>\n" .
4636                               "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
4637                         if ($co{'author_email'}) {
4638                                 print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
4639                         }
4640                         print "</author>\n" .
4641                               # use committer for contributor
4642                               "<contributor>\n" .
4643                               "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
4644                         if ($co{'committer_email'}) {
4645                                 print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
4646                         }
4647                         print "</contributor>\n" .
4648                               "<published>$cd{'iso-8601'}</published>\n" .
4649                               "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
4650                               "<id>$co_url</id>\n" .
4651                               "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
4652                               "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
4653                 }
4654                 my $comment = $co{'comment'};
4655                 print "<pre>\n";
4656                 foreach my $line (@$comment) {
4657                         $line = esc_html($line);
4658                         print "$line\n";
4659                 }
4660                 print "</pre><ul>\n";
4661                 foreach my $difftree_line (@difftree) {
4662                         my %difftree = parse_difftree_raw_line($difftree_line);
4663                         next if !$difftree{'from_id'};
4664
4665                         my $file = $difftree{'file'} || $difftree{'to_file'};
4666
4667                         print "<li>" .
4668                               "[" .
4669                               $cgi->a({-href => href(-full=>1, action=>"blobdiff",
4670                                                      hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
4671                                                      hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
4672                                                      file_name=>$file, file_parent=>$difftree{'from_file'}),
4673                                       -title => "diff"}, 'D');
4674                         if ($have_blame) {
4675                                 print $cgi->a({-href => href(-full=>1, action=>"blame",
4676                                                              file_name=>$file, hash_base=>$commit),
4677                                               -title => "blame"}, 'B');
4678                         }
4679                         # if this is not a feed of a file history
4680                         if (!defined $file_name || $file_name ne $file) {
4681                                 print $cgi->a({-href => href(-full=>1, action=>"history",
4682                                                              file_name=>$file, hash=>$commit),
4683                                               -title => "history"}, 'H');
4684                         }
4685                         $file = esc_path($file);
4686                         print "] ".
4687                               "$file</li>\n";
4688                 }
4689                 if ($format eq 'rss') {
4690                         print "</ul>]]>\n" .
4691                               "</content:encoded>\n" .
4692                               "</item>\n";
4693                 } elsif ($format eq 'atom') {
4694                         print "</ul>\n</div>\n" .
4695                               "</content>\n" .
4696                               "</entry>\n";
4697                 }
4698         }
4699
4700         # end of feed
4701         if ($format eq 'rss') {
4702                 print "</channel>\n</rss>\n";
4703         }       elsif ($format eq 'atom') {
4704                 print "</feed>\n";
4705         }
4706 }
4707
4708 sub git_rss {
4709         git_feed('rss');
4710 }
4711
4712 sub git_atom {
4713         git_feed('atom');
4714 }
4715
4716 sub git_opml {
4717         my @list = git_get_projects_list();
4718
4719         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
4720         print <<XML;
4721 <?xml version="1.0" encoding="utf-8"?>
4722 <opml version="1.0">
4723 <head>
4724   <title>$site_name OPML Export</title>
4725 </head>
4726 <body>
4727 <outline text="git RSS feeds">
4728 XML
4729
4730         foreach my $pr (@list) {
4731                 my %proj = %$pr;
4732                 my $head = git_get_head_hash($proj{'path'});
4733                 if (!defined $head) {
4734                         next;
4735                 }
4736                 $git_dir = "$projectroot/$proj{'path'}";
4737                 my %co = parse_commit($head);
4738                 if (!%co) {
4739                         next;
4740                 }
4741
4742                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
4743                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
4744                 my $html = "$my_url?p=$proj{'path'};a=summary";
4745                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
4746         }
4747         print <<XML;
4748 </outline>
4749 </body>
4750 </opml>
4751 XML
4752 }