gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++"
  43                  || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
  44
  45 # filename of html text to include at top of each page
  46 our $site_header = "++GITWEB_SITE_HEADER++";
  47 # html text to include at home page
  48 our $home_text = "++GITWEB_HOMETEXT++";
  49 # filename of html text to include at bottom of each page
  50 our $site_footer = "++GITWEB_SITE_FOOTER++";
  51
  52 # URI of stylesheets
  53 our @stylesheets = ("++GITWEB_CSS++");
  54 # URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
  55 our $stylesheet = undef;
  56 # URI of GIT logo (72x27 size)
  57 our $logo = "++GITWEB_LOGO++";
  58 # URI of GIT favicon, assumed to be image/png type
  59 our $favicon = "++GITWEB_FAVICON++";
  60
  61 # URI and label (title) of GIT logo link
  62 #our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
  63 #our $logo_label = "git documentation";
  64 our $logo_url = "http://git.or.cz/";
  65 our $logo_label = "git homepage";
  66
  67 # source of projects list
  68 our $projects_list = "++GITWEB_LIST++";
  69
  70 # show repository only if this file exists
  71 # (only effective if this variable evaluates to true)
  72 our $export_ok = "++GITWEB_EXPORT_OK++";
  73
  74 # only allow viewing of repositories also shown on the overview page
  75 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  76
  77 # list of git base URLs used for URL to where fetch project from,
  78 # i.e. full URL is "$git_base_url/$project"
  79 our @git_base_url_list = grep { $_ ne '' } ("++GITWEB_BASE_URL++");
  80
  81 # default blob_plain mimetype and default charset for text/plain blob
  82 our $default_blob_plain_mimetype = 'text/plain';
  83 our $default_text_plain_charset  = undef;
  84
  85 # file to use for guessing MIME types before trying /etc/mime.types
  86 # (relative to the current git repository)
  87 our $mimetypes_file = undef;
  88
  89 # You define site-wide feature defaults here; override them with
  90 # $GITWEB_CONFIG as necessary.
  91 our %feature = (
  92         # feature => {
  93         #       'sub' => feature-sub (subroutine),
  94         #       'override' => allow-override (boolean),
  95         #       'default' => [ default options...] (array reference)}
  96         #
  97         # if feature is overridable (it means that allow-override has true value,
  98         # then feature-sub will be called with default options as parameters;
  99         # return value of feature-sub indicates if to enable specified feature
 100         #
 101         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
 102
 103         # Enable the 'blame' blob view, showing the last commit that modified
 104         # each line in the file. This can be very CPU-intensive.
 105
 106         # To enable system wide have in $GITWEB_CONFIG
 107         # $feature{'blame'}{'default'} = [1];
 108         # To have project specific config enable override in $GITWEB_CONFIG
 109         # $feature{'blame'}{'override'} = 1;
 110         # and in project config gitweb.blame = 0|1;
 111         'blame' => {
 112                 'sub' => \&feature_blame,
 113                 'override' => 0,
 114                 'default' => [0]},
 115
 116         # Enable the 'snapshot' link, providing a compressed tarball of any
 117         # tree. This can potentially generate high traffic if you have large
 118         # project.
 119
 120         # To disable system wide have in $GITWEB_CONFIG
 121         # $feature{'snapshot'}{'default'} = [undef];
 122         # To have project specific config enable override in $GITWEB_CONFIG
 123         # $feature{'blame'}{'override'} = 1;
 124         # and in project config gitweb.snapshot = none|gzip|bzip2;
 125         'snapshot' => {
 126                 'sub' => \&feature_snapshot,
 127                 'override' => 0,
 128                 #         => [content-encoding, suffix, program]
 129                 'default' => ['x-gzip', 'gz', 'gzip']},
 130
 131         # Enable the pickaxe search, which will list the commits that modified
 132         # a given string in a file. This can be practical and quite faster
 133         # alternative to 'blame', but still potentially CPU-intensive.
 134
 135         # To enable system wide have in $GITWEB_CONFIG
 136         # $feature{'pickaxe'}{'default'} = [1];
 137         # To have project specific config enable override in $GITWEB_CONFIG
 138         # $feature{'pickaxe'}{'override'} = 1;
 139         # and in project config gitweb.pickaxe = 0|1;
 140         'pickaxe' => {
 141                 'sub' => \&feature_pickaxe,
 142                 'override' => 0,
 143                 'default' => [1]},
 144
 145         # Make gitweb use an alternative format of the URLs which can be
 146         # more readable and natural-looking: project name is embedded
 147         # directly in the path and the query string contains other
 148         # auxiliary information. All gitweb installations recognize
 149         # URL in either format; this configures in which formats gitweb
 150         # generates links.
 151
 152         # To enable system wide have in $GITWEB_CONFIG
 153         # $feature{'pathinfo'}{'default'} = [1];
 154         # Project specific override is not supported.
 155
 156         # Note that you will need to change the default location of CSS,
 157         # favicon, logo and possibly other files to an absolute URL. Also,
 158         # if gitweb.cgi serves as your indexfile, you will need to force
 159         # $my_uri to contain the script name in your $GITWEB_CONFIG.
 160         'pathinfo' => {
 161                 'override' => 0,
 162                 'default' => [0]},
 163 );
 164
 165 sub gitweb_check_feature {
 166         my ($name) = @_;
 167         return unless exists $feature{$name};
 168         my ($sub, $override, @defaults) = (
 169                 $feature{$name}{'sub'},
 170                 $feature{$name}{'override'},
 171                 @{$feature{$name}{'default'}});
 172         if (!$override) { return @defaults; }
 173         if (!defined $sub) {
 174                 warn "feature $name is not overrideable";
 175                 return @defaults;
 176         }
 177         return $sub->(@defaults);
 178 }
 179
 180 sub feature_blame {
 181         my ($val) = git_get_project_config('blame', '--bool');
 182
 183         if ($val eq 'true') {
 184                 return 1;
 185         } elsif ($val eq 'false') {
 186                 return 0;
 187         }
 188
 189         return $_[0];
 190 }
 191
 192 sub feature_snapshot {
 193         my ($ctype, $suffix, $command) = @_;
 194
 195         my ($val) = git_get_project_config('snapshot');
 196
 197         if ($val eq 'gzip') {
 198                 return ('x-gzip', 'gz', 'gzip');
 199         } elsif ($val eq 'bzip2') {
 200                 return ('x-bzip2', 'bz2', 'bzip2');
 201         } elsif ($val eq 'none') {
 202                 return ();
 203         }
 204
 205         return ($ctype, $suffix, $command);
 206 }
 207
 208 sub gitweb_have_snapshot {
 209         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 210         my $have_snapshot = (defined $ctype && defined $suffix);
 211
 212         return $have_snapshot;
 213 }
 214
 215 sub feature_pickaxe {
 216         my ($val) = git_get_project_config('pickaxe', '--bool');
 217
 218         if ($val eq 'true') {
 219                 return (1);
 220         } elsif ($val eq 'false') {
 221                 return (0);
 222         }
 223
 224         return ($_[0]);
 225 }
 226
 227 # checking HEAD file with -e is fragile if the repository was
 228 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 229 # and then pruned.
 230 sub check_head_link {
 231         my ($dir) = @_;
 232         my $headfile = "$dir/HEAD";
 233         return ((-e $headfile) ||
 234                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 235 }
 236
 237 sub check_export_ok {
 238         my ($dir) = @_;
 239         return (check_head_link($dir) &&
 240                 (!$export_ok || -e "$dir/$export_ok"));
 241 }
 242
 243 # rename detection options for git-diff and git-diff-tree
 244 # - default is '-M', with the cost proportional to
 245 #   (number of removed files) * (number of new files).
 246 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 247 #   (number of changed files + number of removed files) * (number of new files)
 248 # - even more costly is '-C', '--find-copies-harder' with cost
 249 #   (number of files in the original tree) * (number of new files)
 250 # - one might want to include '-B' option, e.g. '-B', '-M'
 251 our @diff_opts = ('-M'); # taken from git_commit
 252
 253 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 254 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 255
 256 # version of the core git binary
 257 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 258
 259 $projects_list ||= $projectroot;
 260
 261 # ======================================================================
 262 # input validation and dispatch
 263 our $action = $cgi->param('a');
 264 if (defined $action) {
 265         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 266                 die_error(undef, "Invalid action parameter");
 267         }
 268 }
 269
 270 # parameters which are pathnames
 271 our $project = $cgi->param('p');
 272 if (defined $project) {
 273         if (!validate_pathname($project) ||
 274             !(-d "$projectroot/$project") ||
 275             !check_head_link("$projectroot/$project") ||
 276             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 277             ($strict_export && !project_in_list($project))) {
 278                 undef $project;
 279                 die_error(undef, "No such project");
 280         }
 281 }
 282
 283 our $file_name = $cgi->param('f');
 284 if (defined $file_name) {
 285         if (!validate_pathname($file_name)) {
 286                 die_error(undef, "Invalid file parameter");
 287         }
 288 }
 289
 290 our $file_parent = $cgi->param('fp');
 291 if (defined $file_parent) {
 292         if (!validate_pathname($file_parent)) {
 293                 die_error(undef, "Invalid file parent parameter");
 294         }
 295 }
 296
 297 # parameters which are refnames
 298 our $hash = $cgi->param('h');
 299 if (defined $hash) {
 300         if (!validate_refname($hash)) {
 301                 die_error(undef, "Invalid hash parameter");
 302         }
 303 }
 304
 305 our $hash_parent = $cgi->param('hp');
 306 if (defined $hash_parent) {
 307         if (!validate_refname($hash_parent)) {
 308                 die_error(undef, "Invalid hash parent parameter");
 309         }
 310 }
 311
 312 our $hash_base = $cgi->param('hb');
 313 if (defined $hash_base) {
 314         if (!validate_refname($hash_base)) {
 315                 die_error(undef, "Invalid hash base parameter");
 316         }
 317 }
 318
 319 our $hash_parent_base = $cgi->param('hpb');
 320 if (defined $hash_parent_base) {
 321         if (!validate_refname($hash_parent_base)) {
 322                 die_error(undef, "Invalid hash parent base parameter");
 323         }
 324 }
 325
 326 # other parameters
 327 our $page = $cgi->param('pg');
 328 if (defined $page) {
 329         if ($page =~ m/[^0-9]/) {
 330                 die_error(undef, "Invalid page parameter");
 331         }
 332 }
 333
 334 our $searchtext = $cgi->param('s');
 335 if (defined $searchtext) {
 336         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 337                 die_error(undef, "Invalid search parameter");
 338         }
 339         $searchtext = quotemeta $searchtext;
 340 }
 341
 342 our $searchtype = $cgi->param('st');
 343 if (defined $searchtype) {
 344         if ($searchtype =~ m/[^a-z]/) {
 345                 die_error(undef, "Invalid searchtype parameter");
 346         }
 347 }
 348
 349 # now read PATH_INFO and use it as alternative to parameters
 350 sub evaluate_path_info {
 351         return if defined $project;
 352         my $path_info = $ENV{"PATH_INFO"};
 353         return if !$path_info;
 354         $path_info =~ s,^/+,,;
 355         return if !$path_info;
 356         # find which part of PATH_INFO is project
 357         $project = $path_info;
 358         $project =~ s,/+$,,;
 359         while ($project && !check_head_link("$projectroot/$project")) {
 360                 $project =~ s,/*[^/]*$,,;
 361         }
 362         # validate project
 363         $project = validate_pathname($project);
 364         if (!$project ||
 365             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 366             ($strict_export && !project_in_list($project))) {
 367                 undef $project;
 368                 return;
 369         }
 370         # do not change any parameters if an action is given using the query string
 371         return if $action;
 372         $path_info =~ s,^$project/*,,;
 373         my ($refname, $pathname) = split(/:/, $path_info, 2);
 374         if (defined $pathname) {
 375                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 376                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 377                 $pathname =~ s,^/+,,;
 378                 if (!$pathname || substr($pathname, -1) eq "/") {
 379                         $action  ||= "tree";
 380                         $pathname =~ s,/$,,;
 381                 } else {
 382                         $action  ||= "blob_plain";
 383                 }
 384                 $hash_base ||= validate_refname($refname);
 385                 $file_name ||= validate_pathname($pathname);
 386         } elsif (defined $refname) {
 387                 # we got "project.git/branch"
 388                 $action ||= "shortlog";
 389                 $hash   ||= validate_refname($refname);
 390         }
 391 }
 392 evaluate_path_info();
 393
 394 # path to the current git repository
 395 our $git_dir;
 396 $git_dir = "$projectroot/$project" if $project;
 397
 398 # dispatch
 399 my %actions = (
 400         "blame" => \&git_blame2,
 401         "blobdiff" => \&git_blobdiff,
 402         "blobdiff_plain" => \&git_blobdiff_plain,
 403         "blob" => \&git_blob,
 404         "blob_plain" => \&git_blob_plain,
 405         "commitdiff" => \&git_commitdiff,
 406         "commitdiff_plain" => \&git_commitdiff_plain,
 407         "commit" => \&git_commit,
 408         "heads" => \&git_heads,
 409         "history" => \&git_history,
 410         "log" => \&git_log,
 411         "rss" => \&git_rss,
 412         "search" => \&git_search,
 413         "search_help" => \&git_search_help,
 414         "shortlog" => \&git_shortlog,
 415         "summary" => \&git_summary,
 416         "tag" => \&git_tag,
 417         "tags" => \&git_tags,
 418         "tree" => \&git_tree,
 419         "snapshot" => \&git_snapshot,
 420         # those below don't need $project
 421         "opml" => \&git_opml,
 422         "project_list" => \&git_project_list,
 423         "project_index" => \&git_project_index,
 424 );
 425
 426 if (defined $project) {
 427         $action ||= 'summary';
 428 } else {
 429         $action ||= 'project_list';
 430 }
 431 if (!defined($actions{$action})) {
 432         die_error(undef, "Unknown action");
 433 }
 434 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 435     !$project) {
 436         die_error(undef, "Project needed");
 437 }
 438 $actions{$action}->();
 439 exit;
 440
 441 ## ======================================================================
 442 ## action links
 443
 444 sub href(%) {
 445         my %params = @_;
 446         my $href = $my_uri;
 447
 448         # XXX: Warning: If you touch this, check the search form for updating,
 449         # too.
 450
 451         my @mapping = (
 452                 project => "p",
 453                 action => "a",
 454                 file_name => "f",
 455                 file_parent => "fp",
 456                 hash => "h",
 457                 hash_parent => "hp",
 458                 hash_base => "hb",
 459                 hash_parent_base => "hpb",
 460                 page => "pg",
 461                 order => "o",
 462                 searchtext => "s",
 463                 searchtype => "st",
 464         );
 465         my %mapping = @mapping;
 466
 467         $params{'project'} = $project unless exists $params{'project'};
 468
 469         my ($use_pathinfo) = gitweb_check_feature('pathinfo');
 470         if ($use_pathinfo) {
 471                 # use PATH_INFO for project name
 472                 $href .= "/$params{'project'}" if defined $params{'project'};
 473                 delete $params{'project'};
 474
 475                 # Summary just uses the project path URL
 476                 if (defined $params{'action'} && $params{'action'} eq 'summary') {
 477                         delete $params{'action'};
 478                 }
 479         }
 480
 481         # now encode the parameters explicitly
 482         my @result = ();
 483         for (my $i = 0; $i < @mapping; $i += 2) {
 484                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 485                 if (defined $params{$name}) {
 486                         push @result, $symbol . "=" . esc_param($params{$name});
 487                 }
 488         }
 489         $href .= "?" . join(';', @result) if scalar @result;
 490
 491         return $href;
 492 }
 493
 494
 495 ## ======================================================================
 496 ## validation, quoting/unquoting and escaping
 497
 498 sub validate_pathname {
 499         my $input = shift || return undef;
 500
 501         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 502         # at the beginning, at the end, and between slashes.
 503         # also this catches doubled slashes
 504         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 505                 return undef;
 506         }
 507         # no null characters
 508         if ($input =~ m!\0!) {
 509                 return undef;
 510         }
 511         return $input;
 512 }
 513
 514 sub validate_refname {
 515         my $input = shift || return undef;
 516
 517         # textual hashes are O.K.
 518         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 519                 return $input;
 520         }
 521         # it must be correct pathname
 522         $input = validate_pathname($input)
 523                 or return undef;
 524         # restrictions on ref name according to git-check-ref-format
 525         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 526                 return undef;
 527         }
 528         return $input;
 529 }
 530
 531 # very thin wrapper for decode("utf8", $str, Encode::FB_DEFAULT);
 532 sub to_utf8 {
 533         my $str = shift;
 534         return decode("utf8", $str, Encode::FB_DEFAULT);
 535 }
 536
 537 # quote unsafe chars, but keep the slash, even when it's not
 538 # correct, but quoted slashes look too horrible in bookmarks
 539 sub esc_param {
 540         my $str = shift;
 541         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 542         $str =~ s/\+/%2B/g;
 543         $str =~ s/ /\+/g;
 544         return $str;
 545 }
 546
 547 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 548 sub esc_url {
 549         my $str = shift;
 550         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 551         $str =~ s/\+/%2B/g;
 552         $str =~ s/ /\+/g;
 553         return $str;
 554 }
 555
 556 # replace invalid utf8 character with SUBSTITUTION sequence
 557 sub esc_html {
 558         my $str = shift;
 559         $str = to_utf8($str);
 560         $str = escapeHTML($str);
 561         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 562         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 563         return $str;
 564 }
 565
 566 # git may return quoted and escaped filenames
 567 sub unquote {
 568         my $str = shift;
 569         if ($str =~ m/^"(.*)"$/) {
 570                 $str = $1;
 571                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 572         }
 573         return $str;
 574 }
 575
 576 # escape tabs (convert tabs to spaces)
 577 sub untabify {
 578         my $line = shift;
 579
 580         while ((my $pos = index($line, "\t")) != -1) {
 581                 if (my $count = (8 - ($pos % 8))) {
 582                         my $spaces = ' ' x $count;
 583                         $line =~ s/\t/$spaces/;
 584                 }
 585         }
 586
 587         return $line;
 588 }
 589
 590 sub project_in_list {
 591         my $project = shift;
 592         my @list = git_get_projects_list();
 593         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 594 }
 595
 596 ## ----------------------------------------------------------------------
 597 ## HTML aware string manipulation
 598
 599 sub chop_str {
 600         my $str = shift;
 601         my $len = shift;
 602         my $add_len = shift || 10;
 603
 604         # allow only $len chars, but don't cut a word if it would fit in $add_len
 605         # if it doesn't fit, cut it if it's still longer than the dots we would add
 606         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 607         my $body = $1;
 608         my $tail = $2;
 609         if (length($tail) > 4) {
 610                 $tail = " ...";
 611                 $body =~ s/&[^;]*$//; # remove chopped character entities
 612         }
 613         return "$body$tail";
 614 }
 615
 616 ## ----------------------------------------------------------------------
 617 ## functions returning short strings
 618
 619 # CSS class for given age value (in seconds)
 620 sub age_class {
 621         my $age = shift;
 622
 623         if ($age < 60*60*2) {
 624                 return "age0";
 625         } elsif ($age < 60*60*24*2) {
 626                 return "age1";
 627         } else {
 628                 return "age2";
 629         }
 630 }
 631
 632 # convert age in seconds to "nn units ago" string
 633 sub age_string {
 634         my $age = shift;
 635         my $age_str;
 636
 637         if ($age > 60*60*24*365*2) {
 638                 $age_str = (int $age/60/60/24/365);
 639                 $age_str .= " years ago";
 640         } elsif ($age > 60*60*24*(365/12)*2) {
 641                 $age_str = int $age/60/60/24/(365/12);
 642                 $age_str .= " months ago";
 643         } elsif ($age > 60*60*24*7*2) {
 644                 $age_str = int $age/60/60/24/7;
 645                 $age_str .= " weeks ago";
 646         } elsif ($age > 60*60*24*2) {
 647                 $age_str = int $age/60/60/24;
 648                 $age_str .= " days ago";
 649         } elsif ($age > 60*60*2) {
 650                 $age_str = int $age/60/60;
 651                 $age_str .= " hours ago";
 652         } elsif ($age > 60*2) {
 653                 $age_str = int $age/60;
 654                 $age_str .= " min ago";
 655         } elsif ($age > 2) {
 656                 $age_str = int $age;
 657                 $age_str .= " sec ago";
 658         } else {
 659                 $age_str .= " right now";
 660         }
 661         return $age_str;
 662 }
 663
 664 # convert file mode in octal to symbolic file mode string
 665 sub mode_str {
 666         my $mode = oct shift;
 667
 668         if (S_ISDIR($mode & S_IFMT)) {
 669                 return 'drwxr-xr-x';
 670         } elsif (S_ISLNK($mode)) {
 671                 return 'lrwxrwxrwx';
 672         } elsif (S_ISREG($mode)) {
 673                 # git cares only about the executable bit
 674                 if ($mode & S_IXUSR) {
 675                         return '-rwxr-xr-x';
 676                 } else {
 677                         return '-rw-r--r--';
 678                 };
 679         } else {
 680                 return '----------';
 681         }
 682 }
 683
 684 # convert file mode in octal to file type string
 685 sub file_type {
 686         my $mode = shift;
 687
 688         if ($mode !~ m/^[0-7]+$/) {
 689                 return $mode;
 690         } else {
 691                 $mode = oct $mode;
 692         }
 693
 694         if (S_ISDIR($mode & S_IFMT)) {
 695                 return "directory";
 696         } elsif (S_ISLNK($mode)) {
 697                 return "symlink";
 698         } elsif (S_ISREG($mode)) {
 699                 return "file";
 700         } else {
 701                 return "unknown";
 702         }
 703 }
 704
 705 ## ----------------------------------------------------------------------
 706 ## functions returning short HTML fragments, or transforming HTML fragments
 707 ## which don't beling to other sections
 708
 709 # format line of commit message or tag comment
 710 sub format_log_line_html {
 711         my $line = shift;
 712
 713         $line = esc_html($line);
 714         $line =~ s/ /&nbsp;/g;
 715         if ($line =~ m/([0-9a-fA-F]{40})/) {
 716                 my $hash_text = $1;
 717                 if (git_get_type($hash_text) eq "commit") {
 718                         my $link =
 719                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 720                                         -class => "text"}, $hash_text);
 721                         $line =~ s/$hash_text/$link/;
 722                 }
 723         }
 724         return $line;
 725 }
 726
 727 # format marker of refs pointing to given object
 728 sub format_ref_marker {
 729         my ($refs, $id) = @_;
 730         my $markers = '';
 731
 732         if (defined $refs->{$id}) {
 733                 foreach my $ref (@{$refs->{$id}}) {
 734                         my ($type, $name) = qw();
 735                         # e.g. tags/v2.6.11 or heads/next
 736                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 737                                 $type = $1;
 738                                 $name = $2;
 739                         } else {
 740                                 $type = "ref";
 741                                 $name = $ref;
 742                         }
 743
 744                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 745                 }
 746         }
 747
 748         if ($markers) {
 749                 return ' <span class="refs">'. $markers . '</span>';
 750         } else {
 751                 return "";
 752         }
 753 }
 754
 755 # format, perhaps shortened and with markers, title line
 756 sub format_subject_html {
 757         my ($long, $short, $href, $extra) = @_;
 758         $extra = '' unless defined($extra);
 759
 760         if (length($short) < length($long)) {
 761                 return $cgi->a({-href => $href, -class => "list subject",
 762                                 -title => to_utf8($long)},
 763                        esc_html($short) . $extra);
 764         } else {
 765                 return $cgi->a({-href => $href, -class => "list subject"},
 766                        esc_html($long)  . $extra);
 767         }
 768 }
 769
 770 sub format_diff_line {
 771         my $line = shift;
 772         my $char = substr($line, 0, 1);
 773         my $diff_class = "";
 774
 775         chomp $line;
 776
 777         if ($char eq '+') {
 778                 $diff_class = " add";
 779         } elsif ($char eq "-") {
 780                 $diff_class = " rem";
 781         } elsif ($char eq "@") {
 782                 $diff_class = " chunk_header";
 783         } elsif ($char eq "\\") {
 784                 $diff_class = " incomplete";
 785         }
 786         $line = untabify($line);
 787         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 788 }
 789
 790 ## ----------------------------------------------------------------------
 791 ## git utility subroutines, invoking git commands
 792
 793 # returns path to the core git executable and the --git-dir parameter as list
 794 sub git_cmd {
 795         return $GIT, '--git-dir='.$git_dir;
 796 }
 797
 798 # returns path to the core git executable and the --git-dir parameter as string
 799 sub git_cmd_str {
 800         return join(' ', git_cmd());
 801 }
 802
 803 # get HEAD ref of given project as hash
 804 sub git_get_head_hash {
 805         my $project = shift;
 806         my $o_git_dir = $git_dir;
 807         my $retval = undef;
 808         $git_dir = "$projectroot/$project";
 809         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 810                 my $head = <$fd>;
 811                 close $fd;
 812                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 813                         $retval = $1;
 814                 }
 815         }
 816         if (defined $o_git_dir) {
 817                 $git_dir = $o_git_dir;
 818         }
 819         return $retval;
 820 }
 821
 822 # get type of given object
 823 sub git_get_type {
 824         my $hash = shift;
 825
 826         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 827         my $type = <$fd>;
 828         close $fd or return;
 829         chomp $type;
 830         return $type;
 831 }
 832
 833 sub git_get_project_config {
 834         my ($key, $type) = @_;
 835
 836         return unless ($key);
 837         $key =~ s/^gitweb\.//;
 838         return if ($key =~ m/\W/);
 839
 840         my @x = (git_cmd(), 'repo-config');
 841         if (defined $type) { push @x, $type; }
 842         push @x, "--get";
 843         push @x, "gitweb.$key";
 844         my $val = qx(@x);
 845         chomp $val;
 846         return ($val);
 847 }
 848
 849 # get hash of given path at given ref
 850 sub git_get_hash_by_path {
 851         my $base = shift;
 852         my $path = shift || return undef;
 853         my $type = shift;
 854
 855         $path =~ s,/+$,,;
 856
 857         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 858                 or die_error(undef, "Open git-ls-tree failed");
 859         my $line = <$fd>;
 860         close $fd or return undef;
 861
 862         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 863         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 864         if (defined $type && $type ne $2) {
 865                 # type doesn't match
 866                 return undef;
 867         }
 868         return $3;
 869 }
 870
 871 ## ......................................................................
 872 ## git utility functions, directly accessing git repository
 873
 874 sub git_get_project_description {
 875         my $path = shift;
 876
 877         open my $fd, "$projectroot/$path/description" or return undef;
 878         my $descr = <$fd>;
 879         close $fd;
 880         chomp $descr;
 881         return $descr;
 882 }
 883
 884 sub git_get_project_url_list {
 885         my $path = shift;
 886
 887         open my $fd, "$projectroot/$path/cloneurl" or return;
 888         my @git_project_url_list = map { chomp; $_ } <$fd>;
 889         close $fd;
 890
 891         return wantarray ? @git_project_url_list : \@git_project_url_list;
 892 }
 893
 894 sub git_get_projects_list {
 895         my @list;
 896
 897         if (-d $projects_list) {
 898                 # search in directory
 899                 my $dir = $projects_list;
 900                 my $pfxlen = length("$dir");
 901
 902                 File::Find::find({
 903                         follow_fast => 1, # follow symbolic links
 904                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 905                         wanted => sub {
 906                                 # skip project-list toplevel, if we get it.
 907                                 return if (m!^[/.]$!);
 908                                 # only directories can be git repositories
 909                                 return unless (-d $_);
 910
 911                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 912                                 # we check related file in $projectroot
 913                                 if (check_export_ok("$projectroot/$subdir")) {
 914                                         push @list, { path => $subdir };
 915                                         $File::Find::prune = 1;
 916                                 }
 917                         },
 918                 }, "$dir");
 919
 920         } elsif (-f $projects_list) {
 921                 # read from file(url-encoded):
 922                 # 'git%2Fgit.git Linus+Torvalds'
 923                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 924                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 925                 open my ($fd), $projects_list or return;
 926                 while (my $line = <$fd>) {
 927                         chomp $line;
 928                         my ($path, $owner) = split ' ', $line;
 929                         $path = unescape($path);
 930                         $owner = unescape($owner);
 931                         if (!defined $path) {
 932                                 next;
 933                         }
 934                         if (check_export_ok("$projectroot/$path")) {
 935                                 my $pr = {
 936                                         path => $path,
 937                                         owner => to_utf8($owner),
 938                                 };
 939                                 push @list, $pr
 940                         }
 941                 }
 942                 close $fd;
 943         }
 944         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 945         return @list;
 946 }
 947
 948 sub git_get_project_owner {
 949         my $project = shift;
 950         my $owner;
 951
 952         return undef unless $project;
 953
 954         # read from file (url-encoded):
 955         # 'git%2Fgit.git Linus+Torvalds'
 956         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 957         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 958         if (-f $projects_list) {
 959                 open (my $fd , $projects_list);
 960                 while (my $line = <$fd>) {
 961                         chomp $line;
 962                         my ($pr, $ow) = split ' ', $line;
 963                         $pr = unescape($pr);
 964                         $ow = unescape($ow);
 965                         if ($pr eq $project) {
 966                                 $owner = to_utf8($ow);
 967                                 last;
 968                         }
 969                 }
 970                 close $fd;
 971         }
 972         if (!defined $owner) {
 973                 $owner = get_file_owner("$projectroot/$project");
 974         }
 975
 976         return $owner;
 977 }
 978
 979 sub git_get_last_activity {
 980         my ($path) = @_;
 981         my $fd;
 982
 983         $git_dir = "$projectroot/$path";
 984         open($fd, "-|", git_cmd(), 'for-each-ref',
 985              '--format=%(refname) %(committer)',
 986              '--sort=-committerdate',
 987              'refs/heads') or return;
 988         my $most_recent = <$fd>;
 989         close $fd or return;
 990         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
 991                 my $timestamp = $1;
 992                 my $age = time - $timestamp;
 993                 return ($age, age_string($age));
 994         }
 995 }
 996
 997 sub git_get_references {
 998         my $type = shift || "";
 999         my %refs;
1000         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
1001         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
1002         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1003                 or return;
1004
1005         while (my $line = <$fd>) {
1006                 chomp $line;
1007                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
1008                         if (defined $refs{$1}) {
1009                                 push @{$refs{$1}}, $2;
1010                         } else {
1011                                 $refs{$1} = [ $2 ];
1012                         }
1013                 }
1014         }
1015         close $fd or return;
1016         return \%refs;
1017 }
1018
1019 sub git_get_rev_name_tags {
1020         my $hash = shift || return undef;
1021
1022         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
1023                 or return;
1024         my $name_rev = <$fd>;
1025         close $fd;
1026
1027         if ($name_rev =~ m|^$hash tags/(.*)$|) {
1028                 return $1;
1029         } else {
1030                 # catches also '$hash undefined' output
1031                 return undef;
1032         }
1033 }
1034
1035 ## ----------------------------------------------------------------------
1036 ## parse to hash functions
1037
1038 sub parse_date {
1039         my $epoch = shift;
1040         my $tz = shift || "-0000";
1041
1042         my %date;
1043         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
1044         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
1045         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
1046         $date{'hour'} = $hour;
1047         $date{'minute'} = $min;
1048         $date{'mday'} = $mday;
1049         $date{'day'} = $days[$wday];
1050         $date{'month'} = $months[$mon];
1051         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
1052                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
1053         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
1054                              $mday, $months[$mon], $hour ,$min;
1055
1056         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
1057         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
1058         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
1059         $date{'hour_local'} = $hour;
1060         $date{'minute_local'} = $min;
1061         $date{'tz_local'} = $tz;
1062         $date{'iso-tz'} = sprintf ("%04d-%02d-%02d %02d:%02d:%02d %s",
1063                                    1900+$year, $mon+1, $mday,
1064                                    $hour, $min, $sec, $tz);
1065         return %date;
1066 }
1067
1068 sub parse_tag {
1069         my $tag_id = shift;
1070         my %tag;
1071         my @comment;
1072
1073         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
1074         $tag{'id'} = $tag_id;
1075         while (my $line = <$fd>) {
1076                 chomp $line;
1077                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
1078                         $tag{'object'} = $1;
1079                 } elsif ($line =~ m/^type (.+)$/) {
1080                         $tag{'type'} = $1;
1081                 } elsif ($line =~ m/^tag (.+)$/) {
1082                         $tag{'name'} = $1;
1083                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
1084                         $tag{'author'} = $1;
1085                         $tag{'epoch'} = $2;
1086                         $tag{'tz'} = $3;
1087                 } elsif ($line =~ m/--BEGIN/) {
1088                         push @comment, $line;
1089                         last;
1090                 } elsif ($line eq "") {
1091                         last;
1092                 }
1093         }
1094         push @comment, <$fd>;
1095         $tag{'comment'} = \@comment;
1096         close $fd or return;
1097         if (!defined $tag{'name'}) {
1098                 return
1099         };
1100         return %tag
1101 }
1102
1103 sub parse_commit {
1104         my $commit_id = shift;
1105         my $commit_text = shift;
1106
1107         my @commit_lines;
1108         my %co;
1109
1110         if (defined $commit_text) {
1111                 @commit_lines = @$commit_text;
1112         } else {
1113                 local $/ = "\0";
1114                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
1115                         or return;
1116                 @commit_lines = split '\n', <$fd>;
1117                 close $fd or return;
1118                 pop @commit_lines;
1119         }
1120         my $header = shift @commit_lines;
1121         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1122                 return;
1123         }
1124         ($co{'id'}, my @parents) = split ' ', $header;
1125         $co{'parents'} = \@parents;
1126         $co{'parent'} = $parents[0];
1127         while (my $line = shift @commit_lines) {
1128                 last if $line eq "\n";
1129                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1130                         $co{'tree'} = $1;
1131                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1132                         $co{'author'} = $1;
1133                         $co{'author_epoch'} = $2;
1134                         $co{'author_tz'} = $3;
1135                         if ($co{'author'} =~ m/^([^<]+) </) {
1136                                 $co{'author_name'} = $1;
1137                         } else {
1138                                 $co{'author_name'} = $co{'author'};
1139                         }
1140                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1141                         $co{'committer'} = $1;
1142                         $co{'committer_epoch'} = $2;
1143                         $co{'committer_tz'} = $3;
1144                         $co{'committer_name'} = $co{'committer'};
1145                         $co{'committer_name'} =~ s/ <.*//;
1146                 }
1147         }
1148         if (!defined $co{'tree'}) {
1149                 return;
1150         };
1151
1152         foreach my $title (@commit_lines) {
1153                 $title =~ s/^    //;
1154                 if ($title ne "") {
1155                         $co{'title'} = chop_str($title, 80, 5);
1156                         # remove leading stuff of merges to make the interesting part visible
1157                         if (length($title) > 50) {
1158                                 $title =~ s/^Automatic //;
1159                                 $title =~ s/^merge (of|with) /Merge ... /i;
1160                                 if (length($title) > 50) {
1161                                         $title =~ s/(http|rsync):\/\///;
1162                                 }
1163                                 if (length($title) > 50) {
1164                                         $title =~ s/(master|www|rsync)\.//;
1165                                 }
1166                                 if (length($title) > 50) {
1167                                         $title =~ s/kernel.org:?//;
1168                                 }
1169                                 if (length($title) > 50) {
1170                                         $title =~ s/\/pub\/scm//;
1171                                 }
1172                         }
1173                         $co{'title_short'} = chop_str($title, 50, 5);
1174                         last;
1175                 }
1176         }
1177         if ($co{'title'} eq "") {
1178                 $co{'title'} = $co{'title_short'} = '(no commit message)';
1179         }
1180         # remove added spaces
1181         foreach my $line (@commit_lines) {
1182                 $line =~ s/^    //;
1183         }
1184         $co{'comment'} = \@commit_lines;
1185
1186         my $age = time - $co{'committer_epoch'};
1187         $co{'age'} = $age;
1188         $co{'age_string'} = age_string($age);
1189         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1190         if ($age > 60*60*24*7*2) {
1191                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1192                 $co{'age_string_age'} = $co{'age_string'};
1193         } else {
1194                 $co{'age_string_date'} = $co{'age_string'};
1195                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1196         }
1197         return %co;
1198 }
1199
1200 # parse ref from ref_file, given by ref_id, with given type
1201 sub parse_ref {
1202         my $ref_file = shift;
1203         my $ref_id = shift;
1204         my $type = shift || git_get_type($ref_id);
1205         my %ref_item;
1206
1207         $ref_item{'type'} = $type;
1208         $ref_item{'id'} = $ref_id;
1209         $ref_item{'epoch'} = 0;
1210         $ref_item{'age'} = "unknown";
1211         if ($type eq "tag") {
1212                 my %tag = parse_tag($ref_id);
1213                 $ref_item{'comment'} = $tag{'comment'};
1214                 if ($tag{'type'} eq "commit") {
1215                         my %co = parse_commit($tag{'object'});
1216                         $ref_item{'epoch'} = $co{'committer_epoch'};
1217                         $ref_item{'age'} = $co{'age_string'};
1218                 } elsif (defined($tag{'epoch'})) {
1219                         my $age = time - $tag{'epoch'};
1220                         $ref_item{'epoch'} = $tag{'epoch'};
1221                         $ref_item{'age'} = age_string($age);
1222                 }
1223                 $ref_item{'reftype'} = $tag{'type'};
1224                 $ref_item{'name'} = $tag{'name'};
1225                 $ref_item{'refid'} = $tag{'object'};
1226         } elsif ($type eq "commit"){
1227                 my %co = parse_commit($ref_id);
1228                 $ref_item{'reftype'} = "commit";
1229                 $ref_item{'name'} = $ref_file;
1230                 $ref_item{'title'} = $co{'title'};
1231                 $ref_item{'refid'} = $ref_id;
1232                 $ref_item{'epoch'} = $co{'committer_epoch'};
1233                 $ref_item{'age'} = $co{'age_string'};
1234         } else {
1235                 $ref_item{'reftype'} = $type;
1236                 $ref_item{'name'} = $ref_file;
1237                 $ref_item{'refid'} = $ref_id;
1238         }
1239
1240         return %ref_item;
1241 }
1242
1243 # parse line of git-diff-tree "raw" output
1244 sub parse_difftree_raw_line {
1245         my $line = shift;
1246         my %res;
1247
1248         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1249         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1250         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1251                 $res{'from_mode'} = $1;
1252                 $res{'to_mode'} = $2;
1253                 $res{'from_id'} = $3;
1254                 $res{'to_id'} = $4;
1255                 $res{'status'} = $5;
1256                 $res{'similarity'} = $6;
1257                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1258                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1259                 } else {
1260                         $res{'file'} = unquote($7);
1261                 }
1262         }
1263         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1264         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1265                 $res{'commit'} = $1;
1266         }
1267
1268         return wantarray ? %res : \%res;
1269 }
1270
1271 # parse line of git-ls-tree output
1272 sub parse_ls_tree_line ($;%) {
1273         my $line = shift;
1274         my %opts = @_;
1275         my %res;
1276
1277         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1278         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1279
1280         $res{'mode'} = $1;
1281         $res{'type'} = $2;
1282         $res{'hash'} = $3;
1283         if ($opts{'-z'}) {
1284                 $res{'name'} = $4;
1285         } else {
1286                 $res{'name'} = unquote($4);
1287         }
1288
1289         return wantarray ? %res : \%res;
1290 }
1291
1292 ## ......................................................................
1293 ## parse to array of hashes functions
1294
1295 sub git_get_refs_list {
1296         my $type = shift || "";
1297         my %refs;
1298         my @reflist;
1299
1300         my @refs;
1301         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1302                 or return;
1303         while (my $line = <$fd>) {
1304                 chomp $line;
1305                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?([^\^]+))(\^\{\})?$/) {
1306                         if (defined $refs{$1}) {
1307                                 push @{$refs{$1}}, $2;
1308                         } else {
1309                                 $refs{$1} = [ $2 ];
1310                         }
1311
1312                         if (! $4) { # unpeeled, direct reference
1313                                 push @refs, { hash => $1, name => $3 }; # without type
1314                         } elsif ($3 eq $refs[-1]{'name'}) {
1315                                 # most likely a tag is followed by its peeled
1316                                 # (deref) one, and when that happens we know the
1317                                 # previous one was of type 'tag'.
1318                                 $refs[-1]{'type'} = "tag";
1319                         }
1320                 }
1321         }
1322         close $fd;
1323
1324         foreach my $ref (@refs) {
1325                 my $ref_file = $ref->{'name'};
1326                 my $ref_id   = $ref->{'hash'};
1327
1328                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1329                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1330
1331                 push @reflist, \%ref_item;
1332         }
1333         # sort refs by age
1334         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1335         return (\@reflist, \%refs);
1336 }
1337
1338 ## ----------------------------------------------------------------------
1339 ## filesystem-related functions
1340
1341 sub get_file_owner {
1342         my $path = shift;
1343
1344         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1345         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1346         if (!defined $gcos) {
1347                 return undef;
1348         }
1349         my $owner = $gcos;
1350         $owner =~ s/[,;].*$//;
1351         return to_utf8($owner);
1352 }
1353
1354 ## ......................................................................
1355 ## mimetype related functions
1356
1357 sub mimetype_guess_file {
1358         my $filename = shift;
1359         my $mimemap = shift;
1360         -r $mimemap or return undef;
1361
1362         my %mimemap;
1363         open(MIME, $mimemap) or return undef;
1364         while (<MIME>) {
1365                 next if m/^#/; # skip comments
1366                 my ($mime, $exts) = split(/\t+/);
1367                 if (defined $exts) {
1368                         my @exts = split(/\s+/, $exts);
1369                         foreach my $ext (@exts) {
1370                                 $mimemap{$ext} = $mime;
1371                         }
1372                 }
1373         }
1374         close(MIME);
1375
1376         $filename =~ /\.([^.]*)$/;
1377         return $mimemap{$1};
1378 }
1379
1380 sub mimetype_guess {
1381         my $filename = shift;
1382         my $mime;
1383         $filename =~ /\./ or return undef;
1384
1385         if ($mimetypes_file) {
1386                 my $file = $mimetypes_file;
1387                 if ($file !~ m!^/!) { # if it is relative path
1388                         # it is relative to project
1389                         $file = "$projectroot/$project/$file";
1390                 }
1391                 $mime = mimetype_guess_file($filename, $file);
1392         }
1393         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1394         return $mime;
1395 }
1396
1397 sub blob_mimetype {
1398         my $fd = shift;
1399         my $filename = shift;
1400
1401         if ($filename) {
1402                 my $mime = mimetype_guess($filename);
1403                 $mime and return $mime;
1404         }
1405
1406         # just in case
1407         return $default_blob_plain_mimetype unless $fd;
1408
1409         if (-T $fd) {
1410                 return 'text/plain' .
1411                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1412         } elsif (! $filename) {
1413                 return 'application/octet-stream';
1414         } elsif ($filename =~ m/\.png$/i) {
1415                 return 'image/png';
1416         } elsif ($filename =~ m/\.gif$/i) {
1417                 return 'image/gif';
1418         } elsif ($filename =~ m/\.jpe?g$/i) {
1419                 return 'image/jpeg';
1420         } else {
1421                 return 'application/octet-stream';
1422         }
1423 }
1424
1425 ## ======================================================================
1426 ## functions printing HTML: header, footer, error page
1427
1428 sub git_header_html {
1429         my $status = shift || "200 OK";
1430         my $expires = shift;
1431
1432         my $title = "$site_name";
1433         if (defined $project) {
1434                 $title .= " - $project";
1435                 if (defined $action) {
1436                         $title .= "/$action";
1437                         if (defined $file_name) {
1438                                 $title .= " - " . esc_html($file_name);
1439                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1440                                         $title .= "/";
1441                                 }
1442                         }
1443                 }
1444         }
1445         my $content_type;
1446         # require explicit support from the UA if we are to send the page as
1447         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1448         # we have to do this because MSIE sometimes globs '*/*', pretending to
1449         # support xhtml+xml but choking when it gets what it asked for.
1450         if (defined $cgi->http('HTTP_ACCEPT') &&
1451             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1452             $cgi->Accept('application/xhtml+xml') != 0) {
1453                 $content_type = 'application/xhtml+xml';
1454         } else {
1455                 $content_type = 'text/html';
1456         }
1457         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1458                            -status=> $status, -expires => $expires);
1459         print <<EOF;
1460 <?xml version="1.0" encoding="utf-8"?>
1461 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1462 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1463 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1464 <!-- git core binaries version $git_version -->
1465 <head>
1466 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1467 <meta name="generator" content="gitweb/$version git/$git_version"/>
1468 <meta name="robots" content="index, nofollow"/>
1469 <title>$title</title>
1470 EOF
1471 # print out each stylesheet that exist
1472         if (defined $stylesheet) {
1473 #provides backwards capability for those people who define style sheet in a config file
1474                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1475         } else {
1476                 foreach my $stylesheet (@stylesheets) {
1477                         next unless $stylesheet;
1478                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1479                 }
1480         }
1481         if (defined $project) {
1482                 printf('<link rel="alternate" title="%s log" '.
1483                        'href="%s" type="application/rss+xml"/>'."\n",
1484                        esc_param($project), href(action=>"rss"));
1485         } else {
1486                 printf('<link rel="alternate" title="%s projects list" '.
1487                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1488                        $site_name, href(project=>undef, action=>"project_index"));
1489                 printf('<link rel="alternate" title="%s projects logs" '.
1490                        'href="%s" type="text/x-opml"/>'."\n",
1491                        $site_name, href(project=>undef, action=>"opml"));
1492         }
1493         if (defined $favicon) {
1494                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1495         }
1496
1497         print "</head>\n" .
1498               "<body>\n";
1499
1500         if (-f $site_header) {
1501                 open (my $fd, $site_header);
1502                 print <$fd>;
1503                 close $fd;
1504         }
1505
1506         print "<div class=\"page_header\">\n" .
1507               $cgi->a({-href => esc_url($logo_url),
1508                        -title => $logo_label},
1509                       qq(<img src="$logo" width="72" height="27" alt="git" class="logo"/>));
1510         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1511         if (defined $project) {
1512                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1513                 if (defined $action) {
1514                         print " / $action";
1515                 }
1516                 print "\n";
1517                 if (!defined $searchtext) {
1518                         $searchtext = "";
1519                 }
1520                 my $search_hash;
1521                 if (defined $hash_base) {
1522                         $search_hash = $hash_base;
1523                 } elsif (defined $hash) {
1524                         $search_hash = $hash;
1525                 } else {
1526                         $search_hash = "HEAD";
1527                 }
1528                 $cgi->param("a", "search");
1529                 $cgi->param("h", $search_hash);
1530                 $cgi->param("p", $project);
1531                 print $cgi->startform(-method => "get", -action => $my_uri) .
1532                       "<div class=\"search\">\n" .
1533                       $cgi->hidden(-name => "p") . "\n" .
1534                       $cgi->hidden(-name => "a") . "\n" .
1535                       $cgi->hidden(-name => "h") . "\n" .
1536                       $cgi->popup_menu(-name => 'st', -default => 'commit',
1537                                        -values => ['commit', 'author', 'committer', 'pickaxe']) .
1538                       $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
1539                       " search:\n",
1540                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1541                       "</div>" .
1542                       $cgi->end_form() . "\n";
1543         }
1544         print "</div>\n";
1545 }
1546
1547 sub git_footer_html {
1548         print "<div class=\"page_footer\">\n";
1549         if (defined $project) {
1550                 my $descr = git_get_project_description($project);
1551                 if (defined $descr) {
1552                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1553                 }
1554                 print $cgi->a({-href => href(action=>"rss"),
1555                               -class => "rss_logo"}, "RSS") . "\n";
1556         } else {
1557                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1558                               -class => "rss_logo"}, "OPML") . " ";
1559                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1560                               -class => "rss_logo"}, "TXT") . "\n";
1561         }
1562         print "</div>\n" ;
1563
1564         if (-f $site_footer) {
1565                 open (my $fd, $site_footer);
1566                 print <$fd>;
1567                 close $fd;
1568         }
1569
1570         print "</body>\n" .
1571               "</html>";
1572 }
1573
1574 sub die_error {
1575         my $status = shift || "403 Forbidden";
1576         my $error = shift || "Malformed query, file missing or permission denied";
1577
1578         git_header_html($status);
1579         print <<EOF;
1580 <div class="page_body">
1581 <br /><br />
1582 $status - $error
1583 <br />
1584 </div>
1585 EOF
1586         git_footer_html();
1587         exit;
1588 }
1589
1590 ## ----------------------------------------------------------------------
1591 ## functions printing or outputting HTML: navigation
1592
1593 sub git_print_page_nav {
1594         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1595         $extra = '' if !defined $extra; # pager or formats
1596
1597         my @navs = qw(summary shortlog log commit commitdiff tree);
1598         if ($suppress) {
1599                 @navs = grep { $_ ne $suppress } @navs;
1600         }
1601
1602         my %arg = map { $_ => {action=>$_} } @navs;
1603         if (defined $head) {
1604                 for (qw(commit commitdiff)) {
1605                         $arg{$_}{hash} = $head;
1606                 }
1607                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1608                         for (qw(shortlog log)) {
1609                                 $arg{$_}{hash} = $head;
1610                         }
1611                 }
1612         }
1613         $arg{tree}{hash} = $treehead if defined $treehead;
1614         $arg{tree}{hash_base} = $treebase if defined $treebase;
1615
1616         print "<div class=\"page_nav\">\n" .
1617                 (join " | ",
1618                  map { $_ eq $current ?
1619                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1620                  } @navs);
1621         print "<br/>\n$extra<br/>\n" .
1622               "</div>\n";
1623 }
1624
1625 sub format_paging_nav {
1626         my ($action, $hash, $head, $page, $nrevs) = @_;
1627         my $paging_nav;
1628
1629
1630         if ($hash ne $head || $page) {
1631                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1632         } else {
1633                 $paging_nav .= "HEAD";
1634         }
1635
1636         if ($page > 0) {
1637                 $paging_nav .= " &sdot; " .
1638                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1639                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1640         } else {
1641                 $paging_nav .= " &sdot; prev";
1642         }
1643
1644         if ($nrevs >= (100 * ($page+1)-1)) {
1645                 $paging_nav .= " &sdot; " .
1646                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1647                                  -accesskey => "n", -title => "Alt-n"}, "next");
1648         } else {
1649                 $paging_nav .= " &sdot; next";
1650         }
1651
1652         return $paging_nav;
1653 }
1654
1655 ## ......................................................................
1656 ## functions printing or outputting HTML: div
1657
1658 sub git_print_header_div {
1659         my ($action, $title, $hash, $hash_base) = @_;
1660         my %args = ();
1661
1662         $args{action} = $action;
1663         $args{hash} = $hash if $hash;
1664         $args{hash_base} = $hash_base if $hash_base;
1665
1666         print "<div class=\"header\">\n" .
1667               $cgi->a({-href => href(%args), -class => "title"},
1668               $title ? $title : $action) .
1669               "\n</div>\n";
1670 }
1671
1672 #sub git_print_authorship (\%) {
1673 sub git_print_authorship {
1674         my $co = shift;
1675
1676         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1677         print "<div class=\"author_date\">" .
1678               esc_html($co->{'author_name'}) .
1679               " [$ad{'rfc2822'}";
1680         if ($ad{'hour_local'} < 6) {
1681                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1682                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1683         } else {
1684                 printf(" (%02d:%02d %s)",
1685                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1686         }
1687         print "]</div>\n";
1688 }
1689
1690 sub git_print_page_path {
1691         my $name = shift;
1692         my $type = shift;
1693         my $hb = shift;
1694
1695
1696         print "<div class=\"page_path\">";
1697         print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1698                       -title => 'tree root'}, "[$project]");
1699         print " / ";
1700         if (defined $name) {
1701                 my @dirname = split '/', $name;
1702                 my $basename = pop @dirname;
1703                 my $fullname = '';
1704
1705                 foreach my $dir (@dirname) {
1706                         $fullname .= ($fullname ? '/' : '') . $dir;
1707                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1708                                                      hash_base=>$hb),
1709                                       -title => $fullname}, esc_html($dir));
1710                         print " / ";
1711                 }
1712                 if (defined $type && $type eq 'blob') {
1713                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1714                                                      hash_base=>$hb),
1715                                       -title => $name}, esc_html($basename));
1716                 } elsif (defined $type && $type eq 'tree') {
1717                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1718                                                      hash_base=>$hb),
1719                                       -title => $name}, esc_html($basename));
1720                         print " / ";
1721                 } else {
1722                         print esc_html($basename);
1723                 }
1724         }
1725         print "<br/></div>\n";
1726 }
1727
1728 # sub git_print_log (\@;%) {
1729 sub git_print_log ($;%) {
1730         my $log = shift;
1731         my %opts = @_;
1732
1733         if ($opts{'-remove_title'}) {
1734                 # remove title, i.e. first line of log
1735                 shift @$log;
1736         }
1737         # remove leading empty lines
1738         while (defined $log->[0] && $log->[0] eq "") {
1739                 shift @$log;
1740         }
1741
1742         # print log
1743         my $signoff = 0;
1744         my $empty = 0;
1745         foreach my $line (@$log) {
1746                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1747                         $signoff = 1;
1748                         $empty = 0;
1749                         if (! $opts{'-remove_signoff'}) {
1750                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1751                                 next;
1752                         } else {
1753                                 # remove signoff lines
1754                                 next;
1755                         }
1756                 } else {
1757                         $signoff = 0;
1758                 }
1759
1760                 # print only one empty line
1761                 # do not print empty line after signoff
1762                 if ($line eq "") {
1763                         next if ($empty || $signoff);
1764                         $empty = 1;
1765                 } else {
1766                         $empty = 0;
1767                 }
1768
1769                 print format_log_line_html($line) . "<br/>\n";
1770         }
1771
1772         if ($opts{'-final_empty_line'}) {
1773                 # end with single empty line
1774                 print "<br/>\n" unless $empty;
1775         }
1776 }
1777
1778 # print tree entry (row of git_tree), but without encompassing <tr> element
1779 sub git_print_tree_entry {
1780         my ($t, $basedir, $hash_base, $have_blame) = @_;
1781
1782         my %base_key = ();
1783         $base_key{hash_base} = $hash_base if defined $hash_base;
1784
1785         # The format of a table row is: mode list link.  Where mode is
1786         # the mode of the entry, list is the name of the entry, an href,
1787         # and link is the action links of the entry.
1788
1789         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1790         if ($t->{'type'} eq "blob") {
1791                 print "<td class=\"list\">" .
1792                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1793                                                file_name=>"$basedir$t->{'name'}", %base_key),
1794                                 -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1795                 print "<td class=\"link\">";
1796                 print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1797                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1798                               "blob");
1799                 if ($have_blame) {
1800                         print " | " .
1801                               $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1802                                                            file_name=>"$basedir$t->{'name'}", %base_key)},
1803                                             "blame");
1804                 }
1805                 if (defined $hash_base) {
1806                         print " | " .
1807                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1808                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1809                                       "history");
1810                 }
1811                 print " | " .
1812                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1813                                                file_name=>"$basedir$t->{'name'}")},
1814                                 "raw");
1815                 print "</td>\n";
1816
1817         } elsif ($t->{'type'} eq "tree") {
1818                 print "<td class=\"list\">";
1819                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1820                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1821                               esc_html($t->{'name'}));
1822                 print "</td>\n";
1823                 print "<td class=\"link\">";
1824                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1825                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1826                               "tree");
1827                 if (defined $hash_base) {
1828                         print " | " .
1829                               $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1830                                                      file_name=>"$basedir$t->{'name'}")},
1831                                       "history");
1832                 }
1833                 print "</td>\n";
1834         }
1835 }
1836
1837 ## ......................................................................
1838 ## functions printing large fragments of HTML
1839
1840 sub git_difftree_body {
1841         my ($difftree, $hash, $parent) = @_;
1842
1843         print "<div class=\"list_head\">\n";
1844         if ($#{$difftree} > 10) {
1845                 print(($#{$difftree} + 1) . " files changed:\n");
1846         }
1847         print "</div>\n";
1848
1849         print "<table class=\"diff_tree\">\n";
1850         my $alternate = 1;
1851         my $patchno = 0;
1852         foreach my $line (@{$difftree}) {
1853                 my %diff = parse_difftree_raw_line($line);
1854
1855                 if ($alternate) {
1856                         print "<tr class=\"dark\">\n";
1857                 } else {
1858                         print "<tr class=\"light\">\n";
1859                 }
1860                 $alternate ^= 1;
1861
1862                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1863                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1864                 if ($diff{'to_mode'} ne ('0' x 6)) {
1865                         $to_mode_oct = oct $diff{'to_mode'};
1866                         if (S_ISREG($to_mode_oct)) { # only for regular file
1867                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1868                         }
1869                         $to_file_type = file_type($diff{'to_mode'});
1870                 }
1871                 if ($diff{'from_mode'} ne ('0' x 6)) {
1872                         $from_mode_oct = oct $diff{'from_mode'};
1873                         if (S_ISREG($to_mode_oct)) { # only for regular file
1874                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1875                         }
1876                         $from_file_type = file_type($diff{'from_mode'});
1877                 }
1878
1879                 if ($diff{'status'} eq "A") { # created
1880                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1881                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1882                         $mode_chng   .= "]</span>";
1883                         print "<td>";
1884                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1885                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1886                                       -class => "list"}, esc_html($diff{'file'}));
1887                         print "</td>\n";
1888                         print "<td>$mode_chng</td>\n";
1889                         print "<td class=\"link\">";
1890                         if ($action eq 'commitdiff') {
1891                                 # link to patch
1892                                 $patchno++;
1893                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1894                         }
1895                         print "</td>\n";
1896
1897                 } elsif ($diff{'status'} eq "D") { # deleted
1898                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1899                         print "<td>";
1900                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1901                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1902                                        -class => "list"}, esc_html($diff{'file'}));
1903                         print "</td>\n";
1904                         print "<td>$mode_chng</td>\n";
1905                         print "<td class=\"link\">";
1906                         if ($action eq 'commitdiff') {
1907                                 # link to patch
1908                                 $patchno++;
1909                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1910                                 print " | ";
1911                         }
1912                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1913                                                      hash_base=>$parent, file_name=>$diff{'file'})},
1914                                       "blob") . " | ";
1915                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1916                                                      file_name=>$diff{'file'})},
1917                                       "blame") . " | ";
1918                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1919                                                      file_name=>$diff{'file'})},
1920                                       "history");
1921                         print "</td>\n";
1922
1923                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1924                         my $mode_chnge = "";
1925                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1926                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1927                                 if ($from_file_type != $to_file_type) {
1928                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1929                                 }
1930                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1931                                         if ($from_mode_str && $to_mode_str) {
1932                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1933                                         } elsif ($to_mode_str) {
1934                                                 $mode_chnge .= " mode: $to_mode_str";
1935                                         }
1936                                 }
1937                                 $mode_chnge .= "]</span>\n";
1938                         }
1939                         print "<td>";
1940                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1941                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1942                                       -class => "list"}, esc_html($diff{'file'}));
1943                         print "</td>\n";
1944                         print "<td>$mode_chnge</td>\n";
1945                         print "<td class=\"link\">";
1946                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1947                                 if ($action eq 'commitdiff') {
1948                                         # link to patch
1949                                         $patchno++;
1950                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1951                                 } else {
1952                                         print $cgi->a({-href => href(action=>"blobdiff",
1953                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1954                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1955                                                                      file_name=>$diff{'file'})},
1956                                                       "diff");
1957                                 }
1958                                 print " | ";
1959                         }
1960                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1961                                                      hash_base=>$hash, file_name=>$diff{'file'})},
1962                                       "blob") . " | ";
1963                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
1964                                                      file_name=>$diff{'file'})},
1965                                       "blame") . " | ";
1966                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
1967                                                      file_name=>$diff{'file'})},
1968                                       "history");
1969                         print "</td>\n";
1970
1971                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1972                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1973                         my $nstatus = $status_name{$diff{'status'}};
1974                         my $mode_chng = "";
1975                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1976                                 # mode also for directories, so we cannot use $to_mode_str
1977                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1978                         }
1979                         print "<td>" .
1980                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1981                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1982                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1983                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1984                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1985                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1986                                       -class => "list"}, esc_html($diff{'from_file'})) .
1987                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1988                               "<td class=\"link\">";
1989                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1990                                 if ($action eq 'commitdiff') {
1991                                         # link to patch
1992                                         $patchno++;
1993                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1994                                 } else {
1995                                         print $cgi->a({-href => href(action=>"blobdiff",
1996                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1997                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1998                                                                      file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1999                                                       "diff");
2000                                 }
2001                                 print " | ";
2002                         }
2003                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
2004                                                      hash_base=>$parent, file_name=>$diff{'from_file'})},
2005                                       "blob") . " | ";
2006                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
2007                                                      file_name=>$diff{'from_file'})},
2008                                       "blame") . " | ";
2009                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
2010                                                     file_name=>$diff{'from_file'})},
2011                                       "history");
2012                         print "</td>\n";
2013
2014                 } # we should not encounter Unmerged (U) or Unknown (X) status
2015                 print "</tr>\n";
2016         }
2017         print "</table>\n";
2018 }
2019
2020 sub git_patchset_body {
2021         my ($fd, $difftree, $hash, $hash_parent) = @_;
2022
2023         my $patch_idx = 0;
2024         my $in_header = 0;
2025         my $patch_found = 0;
2026         my $diffinfo;
2027
2028         print "<div class=\"patchset\">\n";
2029
2030         LINE:
2031         while (my $patch_line = <$fd>) {
2032                 chomp $patch_line;
2033
2034                 if ($patch_line =~ m/^diff /) { # "git diff" header
2035                         # beginning of patch (in patchset)
2036                         if ($patch_found) {
2037                                 # close previous patch
2038                                 print "</div>\n"; # class="patch"
2039                         } else {
2040                                 # first patch in patchset
2041                                 $patch_found = 1;
2042                         }
2043                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
2044
2045                         if (ref($difftree->[$patch_idx]) eq "HASH") {
2046                                 $diffinfo = $difftree->[$patch_idx];
2047                         } else {
2048                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
2049                         }
2050                         $patch_idx++;
2051
2052                         # for now, no extended header, hence we skip empty patches
2053                         # companion to  next LINE if $in_header;
2054                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
2055                                 $in_header = 1;
2056                                 next LINE;
2057                         }
2058
2059                         if ($diffinfo->{'status'} eq "A") { # added
2060                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
2061                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2062                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2063                                               $diffinfo->{'to_id'}) . " (new)" .
2064                                       "</div>\n"; # class="diff_info"
2065
2066                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
2067                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
2068                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2069                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2070                                               $diffinfo->{'from_id'}) . " (deleted)" .
2071                                       "</div>\n"; # class="diff_info"
2072
2073                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
2074                                  $diffinfo->{'status'} eq "C" || # copied
2075                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
2076                                 print "<div class=\"diff_info\">" .
2077                                       file_type($diffinfo->{'from_mode'}) . ":" .
2078                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2079                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
2080                                               $diffinfo->{'from_id'}) .
2081                                       " -> " .
2082                                       file_type($diffinfo->{'to_mode'}) . ":" .
2083                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2084                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
2085                                               $diffinfo->{'to_id'});
2086                                 print "</div>\n"; # class="diff_info"
2087
2088                         } else { # modified, mode changed, ...
2089                                 print "<div class=\"diff_info\">" .
2090                                       file_type($diffinfo->{'from_mode'}) . ":" .
2091                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2092                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2093                                               $diffinfo->{'from_id'}) .
2094                                       " -> " .
2095                                       file_type($diffinfo->{'to_mode'}) . ":" .
2096                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2097                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2098                                               $diffinfo->{'to_id'});
2099                                 print "</div>\n"; # class="diff_info"
2100                         }
2101
2102                         #print "<div class=\"diff extended_header\">\n";
2103                         $in_header = 1;
2104                         next LINE;
2105                 } # start of patch in patchset
2106
2107
2108                 if ($in_header && $patch_line =~ m/^---/) {
2109                         #print "</div>\n"; # class="diff extended_header"
2110                         $in_header = 0;
2111
2112                         my $file = $diffinfo->{'from_file'};
2113                         $file  ||= $diffinfo->{'file'};
2114                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2115                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2116                                         -class => "list"}, esc_html($file));
2117                         $patch_line =~ s|a/.*$|a/$file|g;
2118                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2119
2120                         $patch_line = <$fd>;
2121                         chomp $patch_line;
2122
2123                         #$patch_line =~ m/^+++/;
2124                         $file    = $diffinfo->{'to_file'};
2125                         $file  ||= $diffinfo->{'file'};
2126                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2127                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2128                                         -class => "list"}, esc_html($file));
2129                         $patch_line =~ s|b/.*|b/$file|g;
2130                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2131
2132                         next LINE;
2133                 }
2134                 next LINE if $in_header;
2135
2136                 print format_diff_line($patch_line);
2137         }
2138         print "</div>\n" if $patch_found; # class="patch"
2139
2140         print "</div>\n"; # class="patchset"
2141 }
2142
2143 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2144
2145 sub git_shortlog_body {
2146         # uses global variable $project
2147         my ($revlist, $from, $to, $refs, $extra) = @_;
2148
2149         $from = 0 unless defined $from;
2150         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2151
2152         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2153         my $alternate = 1;
2154         for (my $i = $from; $i <= $to; $i++) {
2155                 my $commit = $revlist->[$i];
2156                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2157                 my $ref = format_ref_marker($refs, $commit);
2158                 my %co = parse_commit($commit);
2159                 if ($alternate) {
2160                         print "<tr class=\"dark\">\n";
2161                 } else {
2162                         print "<tr class=\"light\">\n";
2163                 }
2164                 $alternate ^= 1;
2165                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2166                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2167                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2168                       "<td>";
2169                 print format_subject_html($co{'title'}, $co{'title_short'},
2170                                           href(action=>"commit", hash=>$commit), $ref);
2171                 print "</td>\n" .
2172                       "<td class=\"link\">" .
2173                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
2174                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2175                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
2176                 if (gitweb_have_snapshot()) {
2177                         print " | " . $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2178                 }
2179                 print "</td>\n" .
2180                       "</tr>\n";
2181         }
2182         if (defined $extra) {
2183                 print "<tr>\n" .
2184                       "<td colspan=\"4\">$extra</td>\n" .
2185                       "</tr>\n";
2186         }
2187         print "</table>\n";
2188 }
2189
2190 sub git_history_body {
2191         # Warning: assumes constant type (blob or tree) during history
2192         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2193
2194         $from = 0 unless defined $from;
2195         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2196
2197         print "<table class=\"history\" cellspacing=\"0\">\n";
2198         my $alternate = 1;
2199         for (my $i = $from; $i <= $to; $i++) {
2200                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2201                         next;
2202                 }
2203
2204                 my $commit = $1;
2205                 my %co = parse_commit($commit);
2206                 if (!%co) {
2207                         next;
2208                 }
2209
2210                 my $ref = format_ref_marker($refs, $commit);
2211
2212                 if ($alternate) {
2213                         print "<tr class=\"dark\">\n";
2214                 } else {
2215                         print "<tr class=\"light\">\n";
2216                 }
2217                 $alternate ^= 1;
2218                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2219                       # shortlog uses      chop_str($co{'author_name'}, 10)
2220                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2221                       "<td>";
2222                 # originally git_history used chop_str($co{'title'}, 50)
2223                 print format_subject_html($co{'title'}, $co{'title_short'},
2224                                           href(action=>"commit", hash=>$commit), $ref);
2225                 print "</td>\n" .
2226                       "<td class=\"link\">" .
2227                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2228                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2229
2230                 if ($ftype eq 'blob') {
2231                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2232                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2233                         if (defined $blob_current && defined $blob_parent &&
2234                                         $blob_current ne $blob_parent) {
2235                                 print " | " .
2236                                         $cgi->a({-href => href(action=>"blobdiff",
2237                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2238                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2239                                                                file_name=>$file_name)},
2240                                                 "diff to current");
2241                         }
2242                 }
2243                 print "</td>\n" .
2244                       "</tr>\n";
2245         }
2246         if (defined $extra) {
2247                 print "<tr>\n" .
2248                       "<td colspan=\"4\">$extra</td>\n" .
2249                       "</tr>\n";
2250         }
2251         print "</table>\n";
2252 }
2253
2254 sub git_tags_body {
2255         # uses global variable $project
2256         my ($taglist, $from, $to, $extra) = @_;
2257         $from = 0 unless defined $from;
2258         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2259
2260         print "<table class=\"tags\" cellspacing=\"0\">\n";
2261         my $alternate = 1;
2262         for (my $i = $from; $i <= $to; $i++) {
2263                 my $entry = $taglist->[$i];
2264                 my %tag = %$entry;
2265                 my $comment_lines = $tag{'comment'};
2266                 my $comment = shift @$comment_lines;
2267                 my $comment_short;
2268                 if (defined $comment) {
2269                         $comment_short = chop_str($comment, 30, 5);
2270                 }
2271                 if ($alternate) {
2272                         print "<tr class=\"dark\">\n";
2273                 } else {
2274                         print "<tr class=\"light\">\n";
2275                 }
2276                 $alternate ^= 1;
2277                 print "<td><i>$tag{'age'}</i></td>\n" .
2278                       "<td>" .
2279                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2280                                -class => "list name"}, esc_html($tag{'name'})) .
2281                       "</td>\n" .
2282                       "<td>";
2283                 if (defined $comment) {
2284                         print format_subject_html($comment, $comment_short,
2285                                                   href(action=>"tag", hash=>$tag{'id'}));
2286                 }
2287                 print "</td>\n" .
2288                       "<td class=\"selflink\">";
2289                 if ($tag{'type'} eq "tag") {
2290                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2291                 } else {
2292                         print "&nbsp;";
2293                 }
2294                 print "</td>\n" .
2295                       "<td class=\"link\">" . " | " .
2296                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2297                 if ($tag{'reftype'} eq "commit") {
2298                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2299                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2300                 } elsif ($tag{'reftype'} eq "blob") {
2301                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2302                 }
2303                 print "</td>\n" .
2304                       "</tr>";
2305         }
2306         if (defined $extra) {
2307                 print "<tr>\n" .
2308                       "<td colspan=\"5\">$extra</td>\n" .
2309                       "</tr>\n";
2310         }
2311         print "</table>\n";
2312 }
2313
2314 sub git_heads_body {
2315         # uses global variable $project
2316         my ($headlist, $head, $from, $to, $extra) = @_;
2317         $from = 0 unless defined $from;
2318         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2319
2320         print "<table class=\"heads\" cellspacing=\"0\">\n";
2321         my $alternate = 1;
2322         for (my $i = $from; $i <= $to; $i++) {
2323                 my $entry = $headlist->[$i];
2324                 my %tag = %$entry;
2325                 my $curr = $tag{'id'} eq $head;
2326                 if ($alternate) {
2327                         print "<tr class=\"dark\">\n";
2328                 } else {
2329                         print "<tr class=\"light\">\n";
2330                 }
2331                 $alternate ^= 1;
2332                 print "<td><i>$tag{'age'}</i></td>\n" .
2333                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2334                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2335                                -class => "list name"},esc_html($tag{'name'})) .
2336                       "</td>\n" .
2337                       "<td class=\"link\">" .
2338                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2339                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") . " | " .
2340                       $cgi->a({-href => href(action=>"tree", hash=>$tag{'name'}, hash_base=>$tag{'name'})}, "tree") .
2341                       "</td>\n" .
2342                       "</tr>";
2343         }
2344         if (defined $extra) {
2345                 print "<tr>\n" .
2346                       "<td colspan=\"3\">$extra</td>\n" .
2347                       "</tr>\n";
2348         }
2349         print "</table>\n";
2350 }
2351
2352 ## ======================================================================
2353 ## ======================================================================
2354 ## actions
2355
2356 sub git_project_list {
2357         my $order = $cgi->param('o');
2358         if (defined $order && $order !~ m/project|descr|owner|age/) {
2359                 die_error(undef, "Unknown order parameter");
2360         }
2361
2362         my @list = git_get_projects_list();
2363         my @projects;
2364         if (!@list) {
2365                 die_error(undef, "No projects found");
2366         }
2367         foreach my $pr (@list) {
2368                 my (@aa) = git_get_last_activity($pr->{'path'});
2369                 unless (@aa) {
2370                         next;
2371                 }
2372                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2373                 if (!defined $pr->{'descr'}) {
2374                         my $descr = git_get_project_description($pr->{'path'}) || "";
2375                         $pr->{'descr'} = chop_str($descr, 25, 5);
2376                 }
2377                 if (!defined $pr->{'owner'}) {
2378                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2379                 }
2380                 push @projects, $pr;
2381         }
2382
2383         git_header_html();
2384         if (-f $home_text) {
2385                 print "<div class=\"index_include\">\n";
2386                 open (my $fd, $home_text);
2387                 print <$fd>;
2388                 close $fd;
2389                 print "</div>\n";
2390         }
2391         print "<table class=\"project_list\">\n" .
2392               "<tr>\n";
2393         $order ||= "project";
2394         if ($order eq "project") {
2395                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2396                 print "<th>Project</th>\n";
2397         } else {
2398                 print "<th>" .
2399                       $cgi->a({-href => href(project=>undef, order=>'project'),
2400                                -class => "header"}, "Project") .
2401                       "</th>\n";
2402         }
2403         if ($order eq "descr") {
2404                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2405                 print "<th>Description</th>\n";
2406         } else {
2407                 print "<th>" .
2408                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2409                                -class => "header"}, "Description") .
2410                       "</th>\n";
2411         }
2412         if ($order eq "owner") {
2413                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2414                 print "<th>Owner</th>\n";
2415         } else {
2416                 print "<th>" .
2417                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2418                                -class => "header"}, "Owner") .
2419                       "</th>\n";
2420         }
2421         if ($order eq "age") {
2422                 @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2423                 print "<th>Last Change</th>\n";
2424         } else {
2425                 print "<th>" .
2426                       $cgi->a({-href => href(project=>undef, order=>'age'),
2427                                -class => "header"}, "Last Change") .
2428                       "</th>\n";
2429         }
2430         print "<th></th>\n" .
2431               "</tr>\n";
2432         my $alternate = 1;
2433         foreach my $pr (@projects) {
2434                 if ($alternate) {
2435                         print "<tr class=\"dark\">\n";
2436                 } else {
2437                         print "<tr class=\"light\">\n";
2438                 }
2439                 $alternate ^= 1;
2440                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2441                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2442                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2443                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2444                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2445                       $pr->{'age_string'} . "</td>\n" .
2446                       "<td class=\"link\">" .
2447                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2448                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2449                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2450                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2451                       "</td>\n" .
2452                       "</tr>\n";
2453         }
2454         print "</table>\n";
2455         git_footer_html();
2456 }
2457
2458 sub git_project_index {
2459         my @projects = git_get_projects_list();
2460
2461         print $cgi->header(
2462                 -type => 'text/plain',
2463                 -charset => 'utf-8',
2464                 -content_disposition => 'inline; filename="index.aux"');
2465
2466         foreach my $pr (@projects) {
2467                 if (!exists $pr->{'owner'}) {
2468                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2469                 }
2470
2471                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2472                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2473                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2474                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2475                 $path  =~ s/ /\+/g;
2476                 $owner =~ s/ /\+/g;
2477
2478                 print "$path $owner\n";
2479         }
2480 }
2481
2482 sub git_summary {
2483         my $descr = git_get_project_description($project) || "none";
2484         my $head = git_get_head_hash($project);
2485         my %co = parse_commit($head);
2486         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2487
2488         my $owner = git_get_project_owner($project);
2489
2490         my ($reflist, $refs) = git_get_refs_list();
2491
2492         my @taglist;
2493         my @headlist;
2494         foreach my $ref (@$reflist) {
2495                 if ($ref->{'name'} =~ s!^heads/!!) {
2496                         push @headlist, $ref;
2497                 } else {
2498                         $ref->{'name'} =~ s!^tags/!!;
2499                         push @taglist, $ref;
2500                 }
2501         }
2502
2503         git_header_html();
2504         git_print_page_nav('summary','', $head);
2505
2506         print "<div class=\"title\">&nbsp;</div>\n";
2507         print "<table cellspacing=\"0\">\n" .
2508               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2509               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2510               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2511         # use per project git URL list in $projectroot/$project/cloneurl
2512         # or make project git URL from git base URL and project name
2513         my $url_tag = "URL";
2514         my @url_list = git_get_project_url_list($project);
2515         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2516         foreach my $git_url (@url_list) {
2517                 next unless $git_url;
2518                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2519                 $url_tag = "";
2520         }
2521         print "</table>\n";
2522
2523         if (-s "$projectroot/$project/README.html") {
2524                 if (open my $fd, "$projectroot/$project/README.html") {
2525                         print "<div class=\"title\">readme</div>\n";
2526                         print $_ while (<$fd>);
2527                         close $fd;
2528                 }
2529         }
2530
2531         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2532                 git_get_head_hash($project)
2533                 or die_error(undef, "Open git-rev-list failed");
2534         my @revlist = map { chomp; $_ } <$fd>;
2535         close $fd;
2536         git_print_header_div('shortlog');
2537         git_shortlog_body(\@revlist, 0, 15, $refs,
2538                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2539
2540         if (@taglist) {
2541                 git_print_header_div('tags');
2542                 git_tags_body(\@taglist, 0, 15,
2543                               $cgi->a({-href => href(action=>"tags")}, "..."));
2544         }
2545
2546         if (@headlist) {
2547                 git_print_header_div('heads');
2548                 git_heads_body(\@headlist, $head, 0, 15,
2549                                $cgi->a({-href => href(action=>"heads")}, "..."));
2550         }
2551
2552         git_footer_html();
2553 }
2554
2555 sub git_tag {
2556         my $head = git_get_head_hash($project);
2557         git_header_html();
2558         git_print_page_nav('','', $head,undef,$head);
2559         my %tag = parse_tag($hash);
2560         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2561         print "<div class=\"title_text\">\n" .
2562               "<table cellspacing=\"0\">\n" .
2563               "<tr>\n" .
2564               "<td>object</td>\n" .
2565               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2566                                $tag{'object'}) . "</td>\n" .
2567               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2568                                               $tag{'type'}) . "</td>\n" .
2569               "</tr>\n";
2570         if (defined($tag{'author'})) {
2571                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2572                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2573                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2574                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2575                         "</td></tr>\n";
2576         }
2577         print "</table>\n\n" .
2578               "</div>\n";
2579         print "<div class=\"page_body\">";
2580         my $comment = $tag{'comment'};
2581         foreach my $line (@$comment) {
2582                 print esc_html($line) . "<br/>\n";
2583         }
2584         print "</div>\n";
2585         git_footer_html();
2586 }
2587
2588 sub git_blame2 {
2589         my $fd;
2590         my $ftype;
2591
2592         my ($have_blame) = gitweb_check_feature('blame');
2593         if (!$have_blame) {
2594                 die_error('403 Permission denied', "Permission denied");
2595         }
2596         die_error('404 Not Found', "File name not defined") if (!$file_name);
2597         $hash_base ||= git_get_head_hash($project);
2598         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2599         my %co = parse_commit($hash_base)
2600                 or die_error(undef, "Reading commit failed");
2601         if (!defined $hash) {
2602                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2603                         or die_error(undef, "Error looking up file");
2604         }
2605         $ftype = git_get_type($hash);
2606         if ($ftype !~ "blob") {
2607                 die_error("400 Bad Request", "Object is not a blob");
2608         }
2609         open ($fd, "-|", git_cmd(), "blame", '-p', '--',
2610               $file_name, $hash_base)
2611                 or die_error(undef, "Open git-blame failed");
2612         git_header_html();
2613         my $formats_nav =
2614                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2615                         "blob") .
2616                 " | " .
2617                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2618                         "history") .
2619                 " | " .
2620                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2621                         "HEAD");
2622         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2623         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2624         git_print_page_path($file_name, $ftype, $hash_base);
2625         my @rev_color = (qw(light2 dark2));
2626         my $num_colors = scalar(@rev_color);
2627         my $current_color = 0;
2628         my $last_rev;
2629         print <<HTML;
2630 <div class="page_body">
2631 <table class="blame">
2632 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2633 HTML
2634         my %metainfo = ();
2635         while (1) {
2636                 $_ = <$fd>;
2637                 last unless defined $_;
2638                 my ($full_rev, $orig_lineno, $lineno, $group_size) =
2639                     /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/;
2640                 if (!exists $metainfo{$full_rev}) {
2641                         $metainfo{$full_rev} = {};
2642                 }
2643                 my $meta = $metainfo{$full_rev};
2644                 while (<$fd>) {
2645                         last if (s/^\t//);
2646                         if (/^(\S+) (.*)$/) {
2647                                 $meta->{$1} = $2;
2648                         }
2649                 }
2650                 my $data = $_;
2651                 my $rev = substr($full_rev, 0, 8);
2652                 my $author = $meta->{'author'};
2653                 my %date = parse_date($meta->{'author-time'},
2654                                       $meta->{'author-tz'});
2655                 my $date = $date{'iso-tz'};
2656                 if ($group_size) {
2657                         $current_color = ++$current_color % $num_colors;
2658                 }
2659                 print "<tr class=\"$rev_color[$current_color]\">\n";
2660                 if ($group_size) {
2661                         print "<td class=\"sha1\"";
2662                         print " title=\"$author, $date\"";
2663                         print " rowspan=\"$group_size\"" if ($group_size > 1);
2664                         print ">";
2665                         print $cgi->a({-href => href(action=>"commit",
2666                                                      hash=>$full_rev,
2667                                                      file_name=>$file_name)},
2668                                       esc_html($rev));
2669                         print "</td>\n";
2670                 }
2671                 my $blamed = href(action => 'blame',
2672                                   file_name => $meta->{'filename'},
2673                                   hash_base => $full_rev);
2674                 print "<td class=\"linenr\">";
2675                 print $cgi->a({ -href => "$blamed#l$orig_lineno",
2676                                 -id => "l$lineno",
2677                                 -class => "linenr" },
2678                               esc_html($lineno));
2679                 print "</td>";
2680                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2681                 print "</tr>\n";
2682         }
2683         print "</table>\n";
2684         print "</div>";
2685         close $fd
2686                 or print "Reading blob failed\n";
2687         git_footer_html();
2688 }
2689
2690 sub git_blame {
2691         my $fd;
2692
2693         my ($have_blame) = gitweb_check_feature('blame');
2694         if (!$have_blame) {
2695                 die_error('403 Permission denied', "Permission denied");
2696         }
2697         die_error('404 Not Found', "File name not defined") if (!$file_name);
2698         $hash_base ||= git_get_head_hash($project);
2699         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2700         my %co = parse_commit($hash_base)
2701                 or die_error(undef, "Reading commit failed");
2702         if (!defined $hash) {
2703                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2704                         or die_error(undef, "Error lookup file");
2705         }
2706         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2707                 or die_error(undef, "Open git-annotate failed");
2708         git_header_html();
2709         my $formats_nav =
2710                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2711                         "blob") .
2712                 " | " .
2713                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2714                         "history") .
2715                 " | " .
2716                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2717                         "HEAD");
2718         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2719         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2720         git_print_page_path($file_name, 'blob', $hash_base);
2721         print "<div class=\"page_body\">\n";
2722         print <<HTML;
2723 <table class="blame">
2724   <tr>
2725     <th>Commit</th>
2726     <th>Age</th>
2727     <th>Author</th>
2728     <th>Line</th>
2729     <th>Data</th>
2730   </tr>
2731 HTML
2732         my @line_class = (qw(light dark));
2733         my $line_class_len = scalar (@line_class);
2734         my $line_class_num = $#line_class;
2735         while (my $line = <$fd>) {
2736                 my $long_rev;
2737                 my $short_rev;
2738                 my $author;
2739                 my $time;
2740                 my $lineno;
2741                 my $data;
2742                 my $age;
2743                 my $age_str;
2744                 my $age_class;
2745
2746                 chomp $line;
2747                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2748
2749                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2750                         $long_rev = $1;
2751                         $author   = $2;
2752                         $time     = $3;
2753                         $lineno   = $4;
2754                         $data     = $5;
2755                 } else {
2756                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2757                         next;
2758                 }
2759                 $short_rev  = substr ($long_rev, 0, 8);
2760                 $age        = time () - $time;
2761                 $age_str    = age_string ($age);
2762                 $age_str    =~ s/ /&nbsp;/g;
2763                 $age_class  = age_class($age);
2764                 $author     = esc_html ($author);
2765                 $author     =~ s/ /&nbsp;/g;
2766
2767                 $data = untabify($data);
2768                 $data = esc_html ($data);
2769
2770                 print <<HTML;
2771   <tr class="$line_class[$line_class_num]">
2772     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2773     <td class="$age_class">$age_str</td>
2774     <td>$author</td>
2775     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2776     <td class="pre">$data</td>
2777   </tr>
2778 HTML
2779         } # while (my $line = <$fd>)
2780         print "</table>\n\n";
2781         close $fd
2782                 or print "Reading blob failed.\n";
2783         print "</div>";
2784         git_footer_html();
2785 }
2786
2787 sub git_tags {
2788         my $head = git_get_head_hash($project);
2789         git_header_html();
2790         git_print_page_nav('','', $head,undef,$head);
2791         git_print_header_div('summary', $project);
2792
2793         my ($taglist) = git_get_refs_list("tags");
2794         if (@$taglist) {
2795                 git_tags_body($taglist);
2796         }
2797         git_footer_html();
2798 }
2799
2800 sub git_heads {
2801         my $head = git_get_head_hash($project);
2802         git_header_html();
2803         git_print_page_nav('','', $head,undef,$head);
2804         git_print_header_div('summary', $project);
2805
2806         my ($headlist) = git_get_refs_list("heads");
2807         if (@$headlist) {
2808                 git_heads_body($headlist, $head);
2809         }
2810         git_footer_html();
2811 }
2812
2813 sub git_blob_plain {
2814         my $expires;
2815
2816         if (!defined $hash) {
2817                 if (defined $file_name) {
2818                         my $base = $hash_base || git_get_head_hash($project);
2819                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2820                                 or die_error(undef, "Error lookup file");
2821                 } else {
2822                         die_error(undef, "No file name defined");
2823                 }
2824         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2825                 # blobs defined by non-textual hash id's can be cached
2826                 $expires = "+1d";
2827         }
2828
2829         my $type = shift;
2830         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2831                 or die_error(undef, "Couldn't cat $file_name, $hash");
2832
2833         $type ||= blob_mimetype($fd, $file_name);
2834
2835         # save as filename, even when no $file_name is given
2836         my $save_as = "$hash";
2837         if (defined $file_name) {
2838                 $save_as = $file_name;
2839         } elsif ($type =~ m/^text\//) {
2840                 $save_as .= '.txt';
2841         }
2842
2843         print $cgi->header(
2844                 -type => "$type",
2845                 -expires=>$expires,
2846                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2847         undef $/;
2848         binmode STDOUT, ':raw';
2849         print <$fd>;
2850         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2851         $/ = "\n";
2852         close $fd;
2853 }
2854
2855 sub git_blob {
2856         my $expires;
2857
2858         if (!defined $hash) {
2859                 if (defined $file_name) {
2860                         my $base = $hash_base || git_get_head_hash($project);
2861                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2862                                 or die_error(undef, "Error lookup file");
2863                 } else {
2864                         die_error(undef, "No file name defined");
2865                 }
2866         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2867                 # blobs defined by non-textual hash id's can be cached
2868                 $expires = "+1d";
2869         }
2870
2871         my ($have_blame) = gitweb_check_feature('blame');
2872         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2873                 or die_error(undef, "Couldn't cat $file_name, $hash");
2874         my $mimetype = blob_mimetype($fd, $file_name);
2875         if ($mimetype !~ m/^text\//) {
2876                 close $fd;
2877                 return git_blob_plain($mimetype);
2878         }
2879         git_header_html(undef, $expires);
2880         my $formats_nav = '';
2881         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2882                 if (defined $file_name) {
2883                         if ($have_blame) {
2884                                 $formats_nav .=
2885                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2886                                                                hash=>$hash, file_name=>$file_name)},
2887                                                 "blame") .
2888                                         " | ";
2889                         }
2890                         $formats_nav .=
2891                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2892                                                        hash=>$hash, file_name=>$file_name)},
2893                                         "history") .
2894                                 " | " .
2895                                 $cgi->a({-href => href(action=>"blob_plain",
2896                                                        hash=>$hash, file_name=>$file_name)},
2897                                         "raw") .
2898                                 " | " .
2899                                 $cgi->a({-href => href(action=>"blob",
2900                                                        hash_base=>"HEAD", file_name=>$file_name)},
2901                                         "HEAD");
2902                 } else {
2903                         $formats_nav .=
2904                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2905                 }
2906                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2907                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2908         } else {
2909                 print "<div class=\"page_nav\">\n" .
2910                       "<br/><br/></div>\n" .
2911                       "<div class=\"title\">$hash</div>\n";
2912         }
2913         git_print_page_path($file_name, "blob", $hash_base);
2914         print "<div class=\"page_body\">\n";
2915         my $nr;
2916         while (my $line = <$fd>) {
2917                 chomp $line;
2918                 $nr++;
2919                 $line = untabify($line);
2920                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2921                        $nr, $nr, $nr, esc_html($line);
2922         }
2923         close $fd
2924                 or print "Reading blob failed.\n";
2925         print "</div>";
2926         git_footer_html();
2927 }
2928
2929 sub git_tree {
2930         my $have_snapshot = gitweb_have_snapshot();
2931
2932         if (!defined $hash_base) {
2933                 $hash_base = "HEAD";
2934         }
2935         if (!defined $hash) {
2936                 if (defined $file_name) {
2937                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
2938                 } else {
2939                         $hash = $hash_base;
2940                 }
2941         }
2942         $/ = "\0";
2943         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2944                 or die_error(undef, "Open git-ls-tree failed");
2945         my @entries = map { chomp; $_ } <$fd>;
2946         close $fd or die_error(undef, "Reading tree failed");
2947         $/ = "\n";
2948
2949         my $refs = git_get_references();
2950         my $ref = format_ref_marker($refs, $hash_base);
2951         git_header_html();
2952         my $basedir = '';
2953         my ($have_blame) = gitweb_check_feature('blame');
2954         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2955                 my @views_nav = ();
2956                 if (defined $file_name) {
2957                         push @views_nav,
2958                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2959                                                        hash=>$hash, file_name=>$file_name)},
2960                                         "history"),
2961                                 $cgi->a({-href => href(action=>"tree",
2962                                                        hash_base=>"HEAD", file_name=>$file_name)},
2963                                         "HEAD"),
2964                 }
2965                 if ($have_snapshot) {
2966                         # FIXME: Should be available when we have no hash base as well.
2967                         push @views_nav,
2968                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
2969                                         "snapshot");
2970                 }
2971                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
2972                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2973         } else {
2974                 undef $hash_base;
2975                 print "<div class=\"page_nav\">\n";
2976                 print "<br/><br/></div>\n";
2977                 print "<div class=\"title\">$hash</div>\n";
2978         }
2979         if (defined $file_name) {
2980                 $basedir = $file_name;
2981                 if ($basedir ne '' && substr($basedir, -1) ne '/') {
2982                         $basedir .= '/';
2983                 }
2984         }
2985         git_print_page_path($file_name, 'tree', $hash_base);
2986         print "<div class=\"page_body\">\n";
2987         print "<table cellspacing=\"0\">\n";
2988         my $alternate = 1;
2989         # '..' (top directory) link if possible
2990         if (defined $hash_base &&
2991             defined $file_name && $file_name =~ m![^/]+$!) {
2992                 if ($alternate) {
2993                         print "<tr class=\"dark\">\n";
2994                 } else {
2995                         print "<tr class=\"light\">\n";
2996                 }
2997                 $alternate ^= 1;
2998
2999                 my $up = $file_name;
3000                 $up =~ s!/?[^/]+$!!;
3001                 undef $up unless $up;
3002                 # based on git_print_tree_entry
3003                 print '<td class="mode">' . mode_str('040000') . "</td>\n";
3004                 print '<td class="list">';
3005                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hash_base,
3006                                              file_name=>$up)},
3007                               "..");
3008                 print "</td>\n";
3009                 print "<td class=\"link\"></td>\n";
3010
3011                 print "</tr>\n";
3012         }
3013         foreach my $line (@entries) {
3014                 my %t = parse_ls_tree_line($line, -z => 1);
3015
3016                 if ($alternate) {
3017                         print "<tr class=\"dark\">\n";
3018                 } else {
3019                         print "<tr class=\"light\">\n";
3020                 }
3021                 $alternate ^= 1;
3022
3023                 git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
3024
3025                 print "</tr>\n";
3026         }
3027         print "</table>\n" .
3028               "</div>";
3029         git_footer_html();
3030 }
3031
3032 sub git_snapshot {
3033         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
3034         my $have_snapshot = (defined $ctype && defined $suffix);
3035         if (!$have_snapshot) {
3036                 die_error('403 Permission denied', "Permission denied");
3037         }
3038
3039         if (!defined $hash) {
3040                 $hash = git_get_head_hash($project);
3041         }
3042
3043         my $filename = basename($project) . "-$hash.tar.$suffix";
3044
3045         print $cgi->header(
3046                 -type => 'application/x-tar',
3047                 -content_encoding => $ctype,
3048                 -content_disposition => 'inline; filename="' . "$filename" . '"',
3049                 -status => '200 OK');
3050
3051         my $git = git_cmd_str();
3052         my $name = $project;
3053         $name =~ s/\047/\047\\\047\047/g;
3054         open my $fd, "-|",
3055         "$git archive --format=tar --prefix=\'$name\'/ $hash | $command"
3056                 or die_error(undef, "Execute git-tar-tree failed.");
3057         binmode STDOUT, ':raw';
3058         print <$fd>;
3059         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
3060         close $fd;
3061
3062 }
3063
3064 sub git_log {
3065         my $head = git_get_head_hash($project);
3066         if (!defined $hash) {
3067                 $hash = $head;
3068         }
3069         if (!defined $page) {
3070                 $page = 0;
3071         }
3072         my $refs = git_get_references();
3073
3074         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3075         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3076                 or die_error(undef, "Open git-rev-list failed");
3077         my @revlist = map { chomp; $_ } <$fd>;
3078         close $fd;
3079
3080         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
3081
3082         git_header_html();
3083         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
3084
3085         if (!@revlist) {
3086                 my %co = parse_commit($hash);
3087
3088                 git_print_header_div('summary', $project);
3089                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
3090         }
3091         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
3092                 my $commit = $revlist[$i];
3093                 my $ref = format_ref_marker($refs, $commit);
3094                 my %co = parse_commit($commit);
3095                 next if !%co;
3096                 my %ad = parse_date($co{'author_epoch'});
3097                 git_print_header_div('commit',
3098                                "<span class=\"age\">$co{'age_string'}</span>" .
3099                                esc_html($co{'title'}) . $ref,
3100                                $commit);
3101                 print "<div class=\"title_text\">\n" .
3102                       "<div class=\"log_link\">\n" .
3103                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
3104                       " | " .
3105                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
3106                       " | " .
3107                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
3108                       "<br/>\n" .
3109                       "</div>\n" .
3110                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
3111                       "</div>\n";
3112
3113                 print "<div class=\"log_body\">\n";
3114                 git_print_log($co{'comment'}, -final_empty_line=> 1);
3115                 print "</div>\n";
3116         }
3117         git_footer_html();
3118 }
3119
3120 sub git_commit {
3121         my %co = parse_commit($hash);
3122         if (!%co) {
3123                 die_error(undef, "Unknown commit object");
3124         }
3125         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3126         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
3127
3128         my $parent = $co{'parent'};
3129         if (!defined $parent) {
3130                 $parent = "--root";
3131         }
3132         open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
3133                 @diff_opts, $parent, $hash
3134                 or die_error(undef, "Open git-diff-tree failed");
3135         my @difftree = map { chomp; $_ } <$fd>;
3136         close $fd or die_error(undef, "Reading git-diff-tree failed");
3137
3138         # non-textual hash id's can be cached
3139         my $expires;
3140         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3141                 $expires = "+1d";
3142         }
3143         my $refs = git_get_references();
3144         my $ref = format_ref_marker($refs, $co{'id'});
3145
3146         my $have_snapshot = gitweb_have_snapshot();
3147
3148         my @views_nav = ();
3149         if (defined $file_name && defined $co{'parent'}) {
3150                 push @views_nav,
3151                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3152                                 "blame");
3153         }
3154         git_header_html(undef, $expires);
3155         git_print_page_nav('commit', '',
3156                            $hash, $co{'tree'}, $hash,
3157                            join (' | ', @views_nav));
3158
3159         if (defined $co{'parent'}) {
3160                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3161         } else {
3162                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3163         }
3164         print "<div class=\"title_text\">\n" .
3165               "<table cellspacing=\"0\">\n";
3166         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3167               "<tr>" .
3168               "<td></td><td> $ad{'rfc2822'}";
3169         if ($ad{'hour_local'} < 6) {
3170                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3171                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3172         } else {
3173                 printf(" (%02d:%02d %s)",
3174                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3175         }
3176         print "</td>" .
3177               "</tr>\n";
3178         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3179         print "<tr><td></td><td> $cd{'rfc2822'}" .
3180               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3181               "</td></tr>\n";
3182         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3183         print "<tr>" .
3184               "<td>tree</td>" .
3185               "<td class=\"sha1\">" .
3186               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3187                        class => "list"}, $co{'tree'}) .
3188               "</td>" .
3189               "<td class=\"link\">" .
3190               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3191                       "tree");
3192         if ($have_snapshot) {
3193                 print " | " .
3194                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3195         }
3196         print "</td>" .
3197               "</tr>\n";
3198         my $parents = $co{'parents'};
3199         foreach my $par (@$parents) {
3200                 print "<tr>" .
3201                       "<td>parent</td>" .
3202                       "<td class=\"sha1\">" .
3203                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3204                                class => "list"}, $par) .
3205                       "</td>" .
3206                       "<td class=\"link\">" .
3207                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3208                       " | " .
3209                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3210                       "</td>" .
3211                       "</tr>\n";
3212         }
3213         print "</table>".
3214               "</div>\n";
3215
3216         print "<div class=\"page_body\">\n";
3217         git_print_log($co{'comment'});
3218         print "</div>\n";
3219
3220         git_difftree_body(\@difftree, $hash, $parent);
3221
3222         git_footer_html();
3223 }
3224
3225 sub git_blobdiff {
3226         my $format = shift || 'html';
3227
3228         my $fd;
3229         my @difftree;
3230         my %diffinfo;
3231         my $expires;
3232
3233         # preparing $fd and %diffinfo for git_patchset_body
3234         # new style URI
3235         if (defined $hash_base && defined $hash_parent_base) {
3236                 if (defined $file_name) {
3237                         # read raw output
3238                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
3239                                 "--", $file_name
3240                                 or die_error(undef, "Open git-diff-tree failed");
3241                         @difftree = map { chomp; $_ } <$fd>;
3242                         close $fd
3243                                 or die_error(undef, "Reading git-diff-tree failed");
3244                         @difftree
3245                                 or die_error('404 Not Found', "Blob diff not found");
3246
3247                 } elsif (defined $hash &&
3248                          $hash =~ /[0-9a-fA-F]{40}/) {
3249                         # try to find filename from $hash
3250
3251                         # read filtered raw output
3252                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
3253                                 or die_error(undef, "Open git-diff-tree failed");
3254                         @difftree =
3255                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3256                                 # $hash == to_id
3257                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3258                                 map { chomp; $_ } <$fd>;
3259                         close $fd
3260                                 or die_error(undef, "Reading git-diff-tree failed");
3261                         @difftree
3262                                 or die_error('404 Not Found', "Blob diff not found");
3263
3264                 } else {
3265                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3266                 }
3267
3268                 if (@difftree > 1) {
3269                         die_error('404 Not Found', "Ambiguous blob diff specification");
3270                 }
3271
3272                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3273                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3274                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3275
3276                 $hash_parent ||= $diffinfo{'from_id'};
3277                 $hash        ||= $diffinfo{'to_id'};
3278
3279                 # non-textual hash id's can be cached
3280                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3281                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3282                         $expires = '+1d';
3283                 }
3284
3285                 # open patch output
3286                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3287                         '-p', $hash_parent_base, $hash_base,
3288                         "--", $file_name
3289                         or die_error(undef, "Open git-diff-tree failed");
3290         }
3291
3292         # old/legacy style URI
3293         if (!%diffinfo && # if new style URI failed
3294             defined $hash && defined $hash_parent) {
3295                 # fake git-diff-tree raw output
3296                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3297                 $diffinfo{'from_id'} = $hash_parent;
3298                 $diffinfo{'to_id'}   = $hash;
3299                 if (defined $file_name) {
3300                         if (defined $file_parent) {
3301                                 $diffinfo{'status'} = '2';
3302                                 $diffinfo{'from_file'} = $file_parent;
3303                                 $diffinfo{'to_file'}   = $file_name;
3304                         } else { # assume not renamed
3305                                 $diffinfo{'status'} = '1';
3306                                 $diffinfo{'from_file'} = $file_name;
3307                                 $diffinfo{'to_file'}   = $file_name;
3308                         }
3309                 } else { # no filename given
3310                         $diffinfo{'status'} = '2';
3311                         $diffinfo{'from_file'} = $hash_parent;
3312                         $diffinfo{'to_file'}   = $hash;
3313                 }
3314
3315                 # non-textual hash id's can be cached
3316                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3317                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3318                         $expires = '+1d';
3319                 }
3320
3321                 # open patch output
3322                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3323                         or die_error(undef, "Open git-diff failed");
3324         } else  {
3325                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3326                         unless %diffinfo;
3327         }
3328
3329         # header
3330         if ($format eq 'html') {
3331                 my $formats_nav =
3332                         $cgi->a({-href => href(action=>"blobdiff_plain",
3333                                                hash=>$hash, hash_parent=>$hash_parent,
3334                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3335                                                file_name=>$file_name, file_parent=>$file_parent)},
3336                                 "raw");
3337                 git_header_html(undef, $expires);
3338                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3339                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3340                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3341                 } else {
3342                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3343                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3344                 }
3345                 if (defined $file_name) {
3346                         git_print_page_path($file_name, "blob", $hash_base);
3347                 } else {
3348                         print "<div class=\"page_path\"></div>\n";
3349                 }
3350
3351         } elsif ($format eq 'plain') {
3352                 print $cgi->header(
3353                         -type => 'text/plain',
3354                         -charset => 'utf-8',
3355                         -expires => $expires,
3356                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3357
3358                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3359
3360         } else {
3361                 die_error(undef, "Unknown blobdiff format");
3362         }
3363
3364         # patch
3365         if ($format eq 'html') {
3366                 print "<div class=\"page_body\">\n";
3367
3368                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3369                 close $fd;
3370
3371                 print "</div>\n"; # class="page_body"
3372                 git_footer_html();
3373
3374         } else {
3375                 while (my $line = <$fd>) {
3376                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3377                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3378
3379                         print $line;
3380
3381                         last if $line =~ m!^\+\+\+!;
3382                 }
3383                 local $/ = undef;
3384                 print <$fd>;
3385                 close $fd;
3386         }
3387 }
3388
3389 sub git_blobdiff_plain {
3390         git_blobdiff('plain');
3391 }
3392
3393 sub git_commitdiff {
3394         my $format = shift || 'html';
3395         my %co = parse_commit($hash);
3396         if (!%co) {
3397                 die_error(undef, "Unknown commit object");
3398         }
3399
3400         # we need to prepare $formats_nav before any parameter munging
3401         my $formats_nav;
3402         if ($format eq 'html') {
3403                 $formats_nav =
3404                         $cgi->a({-href => href(action=>"commitdiff_plain",
3405                                                hash=>$hash, hash_parent=>$hash_parent)},
3406                                 "raw");
3407
3408                 if (defined $hash_parent) {
3409                         # commitdiff with two commits given
3410                         my $hash_parent_short = $hash_parent;
3411                         if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3412                                 $hash_parent_short = substr($hash_parent, 0, 7);
3413                         }
3414                         $formats_nav .=
3415                                 ' (from: ' .
3416                                 $cgi->a({-href => href(action=>"commitdiff",
3417                                                        hash=>$hash_parent)},
3418                                         esc_html($hash_parent_short)) .
3419                                 ')';
3420                 } elsif (!$co{'parent'}) {
3421                         # --root commitdiff
3422                         $formats_nav .= ' (initial)';
3423                 } elsif (scalar @{$co{'parents'}} == 1) {
3424                         # single parent commit
3425                         $formats_nav .=
3426                                 ' (parent: ' .
3427                                 $cgi->a({-href => href(action=>"commitdiff",
3428                                                        hash=>$co{'parent'})},
3429                                         esc_html(substr($co{'parent'}, 0, 7))) .
3430                                 ')';
3431                 } else {
3432                         # merge commit
3433                         $formats_nav .=
3434                                 ' (merge: ' .
3435                                 join(' ', map {
3436                                         $cgi->a({-href => href(action=>"commitdiff",
3437                                                                hash=>$_)},
3438                                                 esc_html(substr($_, 0, 7)));
3439                                 } @{$co{'parents'}} ) .
3440                                 ')';
3441                 }
3442         }
3443
3444         if (!defined $hash_parent) {
3445                 $hash_parent = $co{'parent'} || '--root';
3446         }
3447
3448         # read commitdiff
3449         my $fd;
3450         my @difftree;
3451         if ($format eq 'html') {
3452                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3453                         "--no-commit-id",
3454                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3455                         or die_error(undef, "Open git-diff-tree failed");
3456
3457                 while (chomp(my $line = <$fd>)) {
3458                         # empty line ends raw part of diff-tree output
3459                         last unless $line;
3460                         push @difftree, $line;
3461                 }
3462
3463         } elsif ($format eq 'plain') {
3464                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3465                         '-p', $hash_parent, $hash
3466                         or die_error(undef, "Open git-diff-tree failed");
3467
3468         } else {
3469                 die_error(undef, "Unknown commitdiff format");
3470         }
3471
3472         # non-textual hash id's can be cached
3473         my $expires;
3474         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3475                 $expires = "+1d";
3476         }
3477
3478         # write commit message
3479         if ($format eq 'html') {
3480                 my $refs = git_get_references();
3481                 my $ref = format_ref_marker($refs, $co{'id'});
3482
3483                 git_header_html(undef, $expires);
3484                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3485                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3486                 git_print_authorship(\%co);
3487                 print "<div class=\"page_body\">\n";
3488                 if (@{$co{'comment'}} > 1) {
3489                         print "<div class=\"log\">\n";
3490                         git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
3491                         print "</div>\n"; # class="log"
3492                 }
3493
3494         } elsif ($format eq 'plain') {
3495                 my $refs = git_get_references("tags");
3496                 my $tagname = git_get_rev_name_tags($hash);
3497                 my $filename = basename($project) . "-$hash.patch";
3498
3499                 print $cgi->header(
3500                         -type => 'text/plain',
3501                         -charset => 'utf-8',
3502                         -expires => $expires,
3503                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3504                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3505                 print <<TEXT;
3506 From: $co{'author'}
3507 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3508 Subject: $co{'title'}
3509 TEXT
3510                 print "X-Git-Tag: $tagname\n" if $tagname;
3511                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3512
3513                 foreach my $line (@{$co{'comment'}}) {
3514                         print "$line\n";
3515                 }
3516                 print "---\n\n";
3517         }
3518
3519         # write patch
3520         if ($format eq 'html') {
3521                 git_difftree_body(\@difftree, $hash, $hash_parent);
3522                 print "<br/>\n";
3523
3524                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3525                 close $fd;
3526                 print "</div>\n"; # class="page_body"
3527                 git_footer_html();
3528
3529         } elsif ($format eq 'plain') {
3530                 local $/ = undef;
3531                 print <$fd>;
3532                 close $fd
3533                         or print "Reading git-diff-tree failed\n";
3534         }
3535 }
3536
3537 sub git_commitdiff_plain {
3538         git_commitdiff('plain');
3539 }
3540
3541 sub git_history {
3542         if (!defined $hash_base) {
3543                 $hash_base = git_get_head_hash($project);
3544         }
3545         if (!defined $page) {
3546                 $page = 0;
3547         }
3548         my $ftype;
3549         my %co = parse_commit($hash_base);
3550         if (!%co) {
3551                 die_error(undef, "Unknown commit object");
3552         }
3553
3554         my $refs = git_get_references();
3555         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3556
3557         if (!defined $hash && defined $file_name) {
3558                 $hash = git_get_hash_by_path($hash_base, $file_name);
3559         }
3560         if (defined $hash) {
3561                 $ftype = git_get_type($hash);
3562         }
3563
3564         open my $fd, "-|",
3565                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3566                         or die_error(undef, "Open git-rev-list-failed");
3567         my @revlist = map { chomp; $_ } <$fd>;
3568         close $fd
3569                 or die_error(undef, "Reading git-rev-list failed");
3570
3571         my $paging_nav = '';
3572         if ($page > 0) {
3573                 $paging_nav .=
3574                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3575                                                file_name=>$file_name)},
3576                                 "first");
3577                 $paging_nav .= " &sdot; " .
3578                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3579                                                file_name=>$file_name, page=>$page-1),
3580                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3581         } else {
3582                 $paging_nav .= "first";
3583                 $paging_nav .= " &sdot; prev";
3584         }
3585         if ($#revlist >= (100 * ($page+1)-1)) {
3586                 $paging_nav .= " &sdot; " .
3587                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3588                                                file_name=>$file_name, page=>$page+1),
3589                                  -accesskey => "n", -title => "Alt-n"}, "next");
3590         } else {
3591                 $paging_nav .= " &sdot; next";
3592         }
3593         my $next_link = '';
3594         if ($#revlist >= (100 * ($page+1)-1)) {
3595                 $next_link =
3596                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3597                                                file_name=>$file_name, page=>$page+1),
3598                                  -title => "Alt-n"}, "next");
3599         }
3600
3601         git_header_html();
3602         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3603         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3604         git_print_page_path($file_name, $ftype, $hash_base);
3605
3606         git_history_body(\@revlist, ($page * 100), $#revlist,
3607                          $refs, $hash_base, $ftype, $next_link);
3608
3609         git_footer_html();
3610 }
3611
3612 sub git_search {
3613         if (!defined $searchtext) {
3614                 die_error(undef, "Text field empty");
3615         }
3616         if (!defined $hash) {
3617                 $hash = git_get_head_hash($project);
3618         }
3619         my %co = parse_commit($hash);
3620         if (!%co) {
3621                 die_error(undef, "Unknown commit object");
3622         }
3623
3624         $searchtype ||= 'commit';
3625         if ($searchtype eq 'pickaxe') {
3626                 # pickaxe may take all resources of your box and run for several minutes
3627                 # with every query - so decide by yourself how public you make this feature
3628                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3629                 if (!$have_pickaxe) {
3630                         die_error('403 Permission denied', "Permission denied");
3631                 }
3632         }
3633
3634         git_header_html();
3635         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3636         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3637
3638         print "<table cellspacing=\"0\">\n";
3639         my $alternate = 1;
3640         if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
3641                 $/ = "\0";
3642                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3643                 while (my $commit_text = <$fd>) {
3644                         if (!grep m/$searchtext/i, $commit_text) {
3645                                 next;
3646                         }
3647                         if ($searchtype eq 'author' && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3648                                 next;
3649                         }
3650                         if ($searchtype eq 'committer' && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3651                                 next;
3652                         }
3653                         my @commit_lines = split "\n", $commit_text;
3654                         my %co = parse_commit(undef, \@commit_lines);
3655                         if (!%co) {
3656                                 next;
3657                         }
3658                         if ($alternate) {
3659                                 print "<tr class=\"dark\">\n";
3660                         } else {
3661                                 print "<tr class=\"light\">\n";
3662                         }
3663                         $alternate ^= 1;
3664                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3665                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3666                               "<td>" .
3667                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3668                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3669                         my $comment = $co{'comment'};
3670                         foreach my $line (@$comment) {
3671                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3672                                         my $lead = esc_html($1) || "";
3673                                         $lead = chop_str($lead, 30, 10);
3674                                         my $match = esc_html($2) || "";
3675                                         my $trail = esc_html($3) || "";
3676                                         $trail = chop_str($trail, 30, 10);
3677                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3678                                         print chop_str($text, 80, 5) . "<br/>\n";
3679                                 }
3680                         }
3681                         print "</td>\n" .
3682                               "<td class=\"link\">" .
3683                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3684                               " | " .
3685                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3686                         print "</td>\n" .
3687                               "</tr>\n";
3688                 }
3689                 close $fd;
3690         }
3691
3692         if ($searchtype eq 'pickaxe') {
3693                 $/ = "\n";
3694                 my $git_command = git_cmd_str();
3695                 open my $fd, "-|", "$git_command rev-list $hash | " .
3696                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3697                 undef %co;
3698                 my @files;
3699                 while (my $line = <$fd>) {
3700                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3701                                 my %set;
3702                                 $set{'file'} = $6;
3703                                 $set{'from_id'} = $3;
3704                                 $set{'to_id'} = $4;
3705                                 $set{'id'} = $set{'to_id'};
3706                                 if ($set{'id'} =~ m/0{40}/) {
3707                                         $set{'id'} = $set{'from_id'};
3708                                 }
3709                                 if ($set{'id'} =~ m/0{40}/) {
3710                                         next;
3711                                 }
3712                                 push @files, \%set;
3713                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3714                                 if (%co) {
3715                                         if ($alternate) {
3716                                                 print "<tr class=\"dark\">\n";
3717                                         } else {
3718                                                 print "<tr class=\"light\">\n";
3719                                         }
3720                                         $alternate ^= 1;
3721                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3722                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3723                                               "<td>" .
3724                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3725                                                       -class => "list subject"},
3726                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3727                                         while (my $setref = shift @files) {
3728                                                 my %set = %$setref;
3729                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3730                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3731                                                               -class => "list"},
3732                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3733                                                       "<br/>\n";
3734                                         }
3735                                         print "</td>\n" .
3736                                               "<td class=\"link\">" .
3737                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3738                                               " | " .
3739                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3740                                         print "</td>\n" .
3741                                               "</tr>\n";
3742                                 }
3743                                 %co = parse_commit($1);
3744                         }
3745                 }
3746                 close $fd;
3747         }
3748         print "</table>\n";
3749         git_footer_html();
3750 }
3751
3752 sub git_search_help {
3753         git_header_html();
3754         git_print_page_nav('','', $hash,$hash,$hash);
3755         print <<EOT;
3756 <dl>
3757 <dt><b>commit</b></dt>
3758 <dd>The commit messages and authorship information will be scanned for the given string.</dd>
3759 <dt><b>author</b></dt>
3760 <dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given string.</dd>
3761 <dt><b>committer</b></dt>
3762 <dd>Name and e-mail of the committer and date of commit will be scanned for the given string.</dd>
3763 EOT
3764         my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3765         if ($have_pickaxe) {
3766                 print <<EOT;
3767 <dt><b>pickaxe</b></dt>
3768 <dd>All commits that caused the string to appear or disappear from any file (changes that
3769 added, removed or "modified" the string) will be listed. This search can take a while and
3770 takes a lot of strain on the server, so please use it wisely.</dd>
3771 EOT
3772         }
3773         print "</dl>\n";
3774         git_footer_html();
3775 }
3776
3777 sub git_shortlog {
3778         my $head = git_get_head_hash($project);
3779         if (!defined $hash) {
3780                 $hash = $head;
3781         }
3782         if (!defined $page) {
3783                 $page = 0;
3784         }
3785         my $refs = git_get_references();
3786
3787         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3788         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3789                 or die_error(undef, "Open git-rev-list failed");
3790         my @revlist = map { chomp; $_ } <$fd>;
3791         close $fd;
3792
3793         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3794         my $next_link = '';
3795         if ($#revlist >= (100 * ($page+1)-1)) {
3796                 $next_link =
3797                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3798                                  -title => "Alt-n"}, "next");
3799         }
3800
3801
3802         git_header_html();
3803         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3804         git_print_header_div('summary', $project);
3805
3806         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3807
3808         git_footer_html();
3809 }
3810
3811 ## ......................................................................
3812 ## feeds (RSS, OPML)
3813
3814 sub git_rss {
3815         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3816         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3817                 or die_error(undef, "Open git-rev-list failed");
3818         my @revlist = map { chomp; $_ } <$fd>;
3819         close $fd or die_error(undef, "Reading git-rev-list failed");
3820         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3821         print <<XML;
3822 <?xml version="1.0" encoding="utf-8"?>
3823 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3824 <channel>
3825 <title>$project $my_uri $my_url</title>
3826 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3827 <description>$project log</description>
3828 <language>en</language>
3829 XML
3830
3831         for (my $i = 0; $i <= $#revlist; $i++) {
3832                 my $commit = $revlist[$i];
3833                 my %co = parse_commit($commit);
3834                 # we read 150, we always show 30 and the ones more recent than 48 hours
3835                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3836                         last;
3837                 }
3838                 my %cd = parse_date($co{'committer_epoch'});
3839                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3840                         $co{'parent'}, $co{'id'}
3841                         or next;
3842                 my @difftree = map { chomp; $_ } <$fd>;
3843                 close $fd
3844                         or next;
3845                 print "<item>\n" .
3846                       "<title>" .
3847                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3848                       "</title>\n" .
3849                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3850                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3851                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3852                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3853                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3854                       "<content:encoded>" .
3855                       "<![CDATA[\n";
3856                 my $comment = $co{'comment'};
3857                 foreach my $line (@$comment) {
3858                         $line = to_utf8($line);
3859                         print "$line<br/>\n";
3860                 }
3861                 print "<br/>\n";
3862                 foreach my $line (@difftree) {
3863                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3864                                 next;
3865                         }
3866                         my $file = esc_html(unquote($7));
3867                         $file = to_utf8($file);
3868                         print "$file<br/>\n";
3869                 }
3870                 print "]]>\n" .
3871                       "</content:encoded>\n" .
3872                       "</item>\n";
3873         }
3874         print "</channel></rss>";
3875 }
3876
3877 sub git_opml {
3878         my @list = git_get_projects_list();
3879
3880         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3881         print <<XML;
3882 <?xml version="1.0" encoding="utf-8"?>
3883 <opml version="1.0">
3884 <head>
3885   <title>$site_name OPML Export</title>
3886 </head>
3887 <body>
3888 <outline text="git RSS feeds">
3889 XML
3890
3891         foreach my $pr (@list) {
3892                 my %proj = %$pr;
3893                 my $head = git_get_head_hash($proj{'path'});
3894                 if (!defined $head) {
3895                         next;
3896                 }
3897                 $git_dir = "$projectroot/$proj{'path'}";
3898                 my %co = parse_commit($head);
3899                 if (!%co) {
3900                         next;
3901                 }
3902
3903                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3904                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3905                 my $html = "$my_url?p=$proj{'path'};a=summary";
3906                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3907         }
3908         print <<XML;
3909 </outline>
3910 </body>
3911 </opml>
3912 XML
3913 }