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