gitweb/gitweb.perl

   1 #!/usr/bin/perl
   2
   3 # gitweb - simple web interface to track changes in git repositories
   4 #
   5 # (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
   6 # (C) 2005, Christian Gierke
   7 #
   8 # This program is licensed under the GPLv2
   9
  10 use strict;
  11 use warnings;
  12 use CGI qw(:standard :escapeHTML -nosticky);
  13 use CGI::Util qw(unescape);
  14 use CGI::Carp qw(fatalsToBrowser);
  15 use Encode;
  16 use Fcntl ':mode';
  17 use File::Find qw();
  18 use File::Basename qw(basename);
  19 binmode STDOUT, ':utf8';
  20
  21 our $cgi = new CGI;
  22 our $version = "++GIT_VERSION++";
  23 our $my_url = $cgi->url();
  24 our $my_uri = $cgi->url(-absolute => 1);
  25
  26 # core git executable to use
  27 # this can just be "git" if your webserver has a sensible PATH
  28 our $GIT = "++GIT_BINDIR++/git";
  29
  30 # absolute fs-path which will be prepended to the project path
  31 #our $projectroot = "/pub/scm";
  32 our $projectroot = "++GITWEB_PROJECTROOT++";
  33
  34 # target of the home link on top of all pages
  35 our $home_link = $my_uri || "/";
  36
  37 # string of the home link on top of all pages
  38 our $home_link_str = "++GITWEB_HOME_LINK_STR++";
  39
  40 # name of your site or organization to appear in page titles
  41 # replace this with something more descriptive for clearer bookmarks
  42 our $site_name = "++GITWEB_SITENAME++" || $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 # source of projects list
  63 our $projects_list = "++GITWEB_LIST++";
  64
  65 # show repository only if this file exists
  66 # (only effective if this variable evaluates to true)
  67 our $export_ok = "++GITWEB_EXPORT_OK++";
  68
  69 # only allow viewing of repositories also shown on the overview page
  70 our $strict_export = "++GITWEB_STRICT_EXPORT++";
  71
  72 # list of git base URLs used for URL to where fetch project from,
  73 # i.e. full URL is "$git_base_url/$project"
  74 our @git_base_url_list = ("++GITWEB_BASE_URL++");
  75
  76 # default blob_plain mimetype and default charset for text/plain blob
  77 our $default_blob_plain_mimetype = 'text/plain';
  78 our $default_text_plain_charset  = undef;
  79
  80 # file to use for guessing MIME types before trying /etc/mime.types
  81 # (relative to the current git repository)
  82 our $mimetypes_file = undef;
  83
  84 # You define site-wide feature defaults here; override them with
  85 # $GITWEB_CONFIG as necessary.
  86 our %feature = (
  87         # feature => {
  88         #       'sub' => feature-sub (subroutine),
  89         #       'override' => allow-override (boolean),
  90         #       'default' => [ default options...] (array reference)}
  91         #
  92         # if feature is overridable (it means that allow-override has true value,
  93         # then feature-sub will be called with default options as parameters;
  94         # return value of feature-sub indicates if to enable specified feature
  95         #
  96         # use gitweb_check_feature(<feature>) to check if <feature> is enabled
  97
  98         'blame' => {
  99                 'sub' => \&feature_blame,
 100                 'override' => 0,
 101                 'default' => [0]},
 102
 103         'snapshot' => {
 104                 'sub' => \&feature_snapshot,
 105                 'override' => 0,
 106                 #         => [content-encoding, suffix, program]
 107                 'default' => ['x-gzip', 'gz', 'gzip']},
 108
 109         'pickaxe' => {
 110                 'sub' => \&feature_pickaxe,
 111                 'override' => 0,
 112                 'default' => [1]},
 113 );
 114
 115 sub gitweb_check_feature {
 116         my ($name) = @_;
 117         return unless exists $feature{$name};
 118         my ($sub, $override, @defaults) = (
 119                 $feature{$name}{'sub'},
 120                 $feature{$name}{'override'},
 121                 @{$feature{$name}{'default'}});
 122         if (!$override) { return @defaults; }
 123         return $sub->(@defaults);
 124 }
 125
 126 # To enable system wide have in $GITWEB_CONFIG
 127 # $feature{'blame'}{'default'} = [1];
 128 # To have project specific config enable override in $GITWEB_CONFIG
 129 # $feature{'blame'}{'override'} = 1;
 130 # and in project config gitweb.blame = 0|1;
 131
 132 sub feature_blame {
 133         my ($val) = git_get_project_config('blame', '--bool');
 134
 135         if ($val eq 'true') {
 136                 return 1;
 137         } elsif ($val eq 'false') {
 138                 return 0;
 139         }
 140
 141         return $_[0];
 142 }
 143
 144 # To disable system wide have in $GITWEB_CONFIG
 145 # $feature{'snapshot'}{'default'} = [undef];
 146 # To have project specific config enable override in $GITWEB_CONFIG
 147 # $feature{'blame'}{'override'} = 1;
 148 # and in project config  gitweb.snapshot = none|gzip|bzip2
 149
 150 sub feature_snapshot {
 151         my ($ctype, $suffix, $command) = @_;
 152
 153         my ($val) = git_get_project_config('snapshot');
 154
 155         if ($val eq 'gzip') {
 156                 return ('x-gzip', 'gz', 'gzip');
 157         } elsif ($val eq 'bzip2') {
 158                 return ('x-bzip2', 'bz2', 'bzip2');
 159         } elsif ($val eq 'none') {
 160                 return ();
 161         }
 162
 163         return ($ctype, $suffix, $command);
 164 }
 165
 166 sub gitweb_have_snapshot {
 167         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
 168         my $have_snapshot = (defined $ctype && defined $suffix);
 169
 170         return $have_snapshot;
 171 }
 172
 173 # To enable system wide have in $GITWEB_CONFIG
 174 # $feature{'pickaxe'}{'default'} = [1];
 175 # To have project specific config enable override in $GITWEB_CONFIG
 176 # $feature{'pickaxe'}{'override'} = 1;
 177 # and in project config gitweb.pickaxe = 0|1;
 178
 179 sub feature_pickaxe {
 180         my ($val) = git_get_project_config('pickaxe', '--bool');
 181
 182         if ($val eq 'true') {
 183                 return (1);
 184         } elsif ($val eq 'false') {
 185                 return (0);
 186         }
 187
 188         return ($_[0]);
 189 }
 190
 191 # checking HEAD file with -e is fragile if the repository was
 192 # initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
 193 # and then pruned.
 194 sub check_head_link {
 195         my ($dir) = @_;
 196         my $headfile = "$dir/HEAD";
 197         return ((-e $headfile) ||
 198                 (-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
 199 }
 200
 201 sub check_export_ok {
 202         my ($dir) = @_;
 203         return (check_head_link($dir) &&
 204                 (!$export_ok || -e "$dir/$export_ok"));
 205 }
 206
 207 # rename detection options for git-diff and git-diff-tree
 208 # - default is '-M', with the cost proportional to
 209 #   (number of removed files) * (number of new files).
 210 # - more costly is '-C' (or '-C', '-M'), with the cost proportional to
 211 #   (number of changed files + number of removed files) * (number of new files)
 212 # - even more costly is '-C', '--find-copies-harder' with cost
 213 #   (number of files in the original tree) * (number of new files)
 214 # - one might want to include '-B' option, e.g. '-B', '-M'
 215 our @diff_opts = ('-M'); # taken from git_commit
 216
 217 our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "++GITWEB_CONFIG++";
 218 do $GITWEB_CONFIG if -e $GITWEB_CONFIG;
 219
 220 # version of the core git binary
 221 our $git_version = qx($GIT --version) =~ m/git version (.*)$/ ? $1 : "unknown";
 222
 223 $projects_list ||= $projectroot;
 224
 225 # ======================================================================
 226 # input validation and dispatch
 227 our $action = $cgi->param('a');
 228 if (defined $action) {
 229         if ($action =~ m/[^0-9a-zA-Z\.\-_]/) {
 230                 die_error(undef, "Invalid action parameter");
 231         }
 232 }
 233
 234 # parameters which are pathnames
 235 our $project = $cgi->param('p');
 236 if (defined $project) {
 237         if (!validate_pathname($project) ||
 238             !(-d "$projectroot/$project") ||
 239             !check_head_link("$projectroot/$project") ||
 240             ($export_ok && !(-e "$projectroot/$project/$export_ok")) ||
 241             ($strict_export && !project_in_list($project))) {
 242                 undef $project;
 243                 die_error(undef, "No such project");
 244         }
 245 }
 246
 247 our $file_name = $cgi->param('f');
 248 if (defined $file_name) {
 249         if (!validate_pathname($file_name)) {
 250                 die_error(undef, "Invalid file parameter");
 251         }
 252 }
 253
 254 our $file_parent = $cgi->param('fp');
 255 if (defined $file_parent) {
 256         if (!validate_pathname($file_parent)) {
 257                 die_error(undef, "Invalid file parent parameter");
 258         }
 259 }
 260
 261 # parameters which are refnames
 262 our $hash = $cgi->param('h');
 263 if (defined $hash) {
 264         if (!validate_refname($hash)) {
 265                 die_error(undef, "Invalid hash parameter");
 266         }
 267 }
 268
 269 our $hash_parent = $cgi->param('hp');
 270 if (defined $hash_parent) {
 271         if (!validate_refname($hash_parent)) {
 272                 die_error(undef, "Invalid hash parent parameter");
 273         }
 274 }
 275
 276 our $hash_base = $cgi->param('hb');
 277 if (defined $hash_base) {
 278         if (!validate_refname($hash_base)) {
 279                 die_error(undef, "Invalid hash base parameter");
 280         }
 281 }
 282
 283 our $hash_parent_base = $cgi->param('hpb');
 284 if (defined $hash_parent_base) {
 285         if (!validate_refname($hash_parent_base)) {
 286                 die_error(undef, "Invalid hash parent base parameter");
 287         }
 288 }
 289
 290 # other parameters
 291 our $page = $cgi->param('pg');
 292 if (defined $page) {
 293         if ($page =~ m/[^0-9]/) {
 294                 die_error(undef, "Invalid page parameter");
 295         }
 296 }
 297
 298 our $searchtext = $cgi->param('s');
 299 if (defined $searchtext) {
 300         if ($searchtext =~ m/[^a-zA-Z0-9_\.\/\-\+\:\@ ]/) {
 301                 die_error(undef, "Invalid search parameter");
 302         }
 303         $searchtext = quotemeta $searchtext;
 304 }
 305
 306 # now read PATH_INFO and use it as alternative to parameters
 307 sub evaluate_path_info {
 308         return if defined $project;
 309         my $path_info = $ENV{"PATH_INFO"};
 310         return if !$path_info;
 311         $path_info =~ s,^/+,,;
 312         return if !$path_info;
 313         # find which part of PATH_INFO is project
 314         $project = $path_info;
 315         $project =~ s,/+$,,;
 316         while ($project && !check_head_link("$projectroot/$project")) {
 317                 $project =~ s,/*[^/]*$,,;
 318         }
 319         # validate project
 320         $project = validate_pathname($project);
 321         if (!$project ||
 322             ($export_ok && !-e "$projectroot/$project/$export_ok") ||
 323             ($strict_export && !project_in_list($project))) {
 324                 undef $project;
 325                 return;
 326         }
 327         # do not change any parameters if an action is given using the query string
 328         return if $action;
 329         $path_info =~ s,^$project/*,,;
 330         my ($refname, $pathname) = split(/:/, $path_info, 2);
 331         if (defined $pathname) {
 332                 # we got "project.git/branch:filename" or "project.git/branch:dir/"
 333                 # we could use git_get_type(branch:pathname), but it needs $git_dir
 334                 $pathname =~ s,^/+,,;
 335                 if (!$pathname || substr($pathname, -1) eq "/") {
 336                         $action  ||= "tree";
 337                         $pathname =~ s,/$,,;
 338                 } else {
 339                         $action  ||= "blob_plain";
 340                 }
 341                 $hash_base ||= validate_refname($refname);
 342                 $file_name ||= validate_pathname($pathname);
 343         } elsif (defined $refname) {
 344                 # we got "project.git/branch"
 345                 $action ||= "shortlog";
 346                 $hash   ||= validate_refname($refname);
 347         }
 348 }
 349 evaluate_path_info();
 350
 351 # path to the current git repository
 352 our $git_dir;
 353 $git_dir = "$projectroot/$project" if $project;
 354
 355 # dispatch
 356 my %actions = (
 357         "blame" => \&git_blame2,
 358         "blobdiff" => \&git_blobdiff,
 359         "blobdiff_plain" => \&git_blobdiff_plain,
 360         "blob" => \&git_blob,
 361         "blob_plain" => \&git_blob_plain,
 362         "commitdiff" => \&git_commitdiff,
 363         "commitdiff_plain" => \&git_commitdiff_plain,
 364         "commit" => \&git_commit,
 365         "heads" => \&git_heads,
 366         "history" => \&git_history,
 367         "log" => \&git_log,
 368         "rss" => \&git_rss,
 369         "search" => \&git_search,
 370         "shortlog" => \&git_shortlog,
 371         "summary" => \&git_summary,
 372         "tag" => \&git_tag,
 373         "tags" => \&git_tags,
 374         "tree" => \&git_tree,
 375         "snapshot" => \&git_snapshot,
 376         # those below don't need $project
 377         "opml" => \&git_opml,
 378         "project_list" => \&git_project_list,
 379         "project_index" => \&git_project_index,
 380 );
 381
 382 if (defined $project) {
 383         $action ||= 'summary';
 384 } else {
 385         $action ||= 'project_list';
 386 }
 387 if (!defined($actions{$action})) {
 388         die_error(undef, "Unknown action");
 389 }
 390 if ($action !~ m/^(opml|project_list|project_index)$/ &&
 391     !$project) {
 392         die_error(undef, "Project needed");
 393 }
 394 $actions{$action}->();
 395 exit;
 396
 397 ## ======================================================================
 398 ## action links
 399
 400 sub href(%) {
 401         my %params = @_;
 402
 403         my @mapping = (
 404                 project => "p",
 405                 action => "a",
 406                 file_name => "f",
 407                 file_parent => "fp",
 408                 hash => "h",
 409                 hash_parent => "hp",
 410                 hash_base => "hb",
 411                 hash_parent_base => "hpb",
 412                 page => "pg",
 413                 order => "o",
 414                 searchtext => "s",
 415         );
 416         my %mapping = @mapping;
 417
 418         $params{'project'} = $project unless exists $params{'project'};
 419
 420         my @result = ();
 421         for (my $i = 0; $i < @mapping; $i += 2) {
 422                 my ($name, $symbol) = ($mapping[$i], $mapping[$i+1]);
 423                 if (defined $params{$name}) {
 424                         push @result, $symbol . "=" . esc_param($params{$name});
 425                 }
 426         }
 427         return "$my_uri?" . join(';', @result);
 428 }
 429
 430
 431 ## ======================================================================
 432 ## validation, quoting/unquoting and escaping
 433
 434 sub validate_pathname {
 435         my $input = shift || return undef;
 436
 437         # no '.' or '..' as elements of path, i.e. no '.' nor '..'
 438         # at the beginning, at the end, and between slashes.
 439         # also this catches doubled slashes
 440         if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
 441                 return undef;
 442         }
 443         # no null characters
 444         if ($input =~ m!\0!) {
 445                 return undef;
 446         }
 447         return $input;
 448 }
 449
 450 sub validate_refname {
 451         my $input = shift || return undef;
 452
 453         # textual hashes are O.K.
 454         if ($input =~ m/^[0-9a-fA-F]{40}$/) {
 455                 return $input;
 456         }
 457         # it must be correct pathname
 458         $input = validate_pathname($input)
 459                 or return undef;
 460         # restrictions on ref name according to git-check-ref-format
 461         if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
 462                 return undef;
 463         }
 464         return $input;
 465 }
 466
 467 # quote unsafe chars, but keep the slash, even when it's not
 468 # correct, but quoted slashes look too horrible in bookmarks
 469 sub esc_param {
 470         my $str = shift;
 471         $str =~ s/([^A-Za-z0-9\-_.~()\/:@])/sprintf("%%%02X", ord($1))/eg;
 472         $str =~ s/\+/%2B/g;
 473         $str =~ s/ /\+/g;
 474         return $str;
 475 }
 476
 477 # quote unsafe chars in whole URL, so some charactrs cannot be quoted
 478 sub esc_url {
 479         my $str = shift;
 480         $str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&=])/sprintf("%%%02X", ord($1))/eg;
 481         $str =~ s/\+/%2B/g;
 482         $str =~ s/ /\+/g;
 483         return $str;
 484 }
 485
 486 # replace invalid utf8 character with SUBSTITUTION sequence
 487 sub esc_html {
 488         my $str = shift;
 489         $str = decode("utf8", $str, Encode::FB_DEFAULT);
 490         $str = escapeHTML($str);
 491         $str =~ s/\014/^L/g; # escape FORM FEED (FF) character (e.g. in COPYING file)
 492         $str =~ s/\033/^[/g; # "escape" ESCAPE (\e) character (e.g. commit 20a3847d8a5032ce41f90dcc68abfb36e6fee9b1)
 493         return $str;
 494 }
 495
 496 # git may return quoted and escaped filenames
 497 sub unquote {
 498         my $str = shift;
 499         if ($str =~ m/^"(.*)"$/) {
 500                 $str = $1;
 501                 $str =~ s/\\([0-7]{1,3})/chr(oct($1))/eg;
 502         }
 503         return $str;
 504 }
 505
 506 # escape tabs (convert tabs to spaces)
 507 sub untabify {
 508         my $line = shift;
 509
 510         while ((my $pos = index($line, "\t")) != -1) {
 511                 if (my $count = (8 - ($pos % 8))) {
 512                         my $spaces = ' ' x $count;
 513                         $line =~ s/\t/$spaces/;
 514                 }
 515         }
 516
 517         return $line;
 518 }
 519
 520 sub project_in_list {
 521         my $project = shift;
 522         my @list = git_get_projects_list();
 523         return @list && scalar(grep { $_->{'path'} eq $project } @list);
 524 }
 525
 526 ## ----------------------------------------------------------------------
 527 ## HTML aware string manipulation
 528
 529 sub chop_str {
 530         my $str = shift;
 531         my $len = shift;
 532         my $add_len = shift || 10;
 533
 534         # allow only $len chars, but don't cut a word if it would fit in $add_len
 535         # if it doesn't fit, cut it if it's still longer than the dots we would add
 536         $str =~ m/^(.{0,$len}[^ \/\-_:\.@]{0,$add_len})(.*)/;
 537         my $body = $1;
 538         my $tail = $2;
 539         if (length($tail) > 4) {
 540                 $tail = " ...";
 541                 $body =~ s/&[^;]*$//; # remove chopped character entities
 542         }
 543         return "$body$tail";
 544 }
 545
 546 ## ----------------------------------------------------------------------
 547 ## functions returning short strings
 548
 549 # CSS class for given age value (in seconds)
 550 sub age_class {
 551         my $age = shift;
 552
 553         if ($age < 60*60*2) {
 554                 return "age0";
 555         } elsif ($age < 60*60*24*2) {
 556                 return "age1";
 557         } else {
 558                 return "age2";
 559         }
 560 }
 561
 562 # convert age in seconds to "nn units ago" string
 563 sub age_string {
 564         my $age = shift;
 565         my $age_str;
 566
 567         if ($age > 60*60*24*365*2) {
 568                 $age_str = (int $age/60/60/24/365);
 569                 $age_str .= " years ago";
 570         } elsif ($age > 60*60*24*(365/12)*2) {
 571                 $age_str = int $age/60/60/24/(365/12);
 572                 $age_str .= " months ago";
 573         } elsif ($age > 60*60*24*7*2) {
 574                 $age_str = int $age/60/60/24/7;
 575                 $age_str .= " weeks ago";
 576         } elsif ($age > 60*60*24*2) {
 577                 $age_str = int $age/60/60/24;
 578                 $age_str .= " days ago";
 579         } elsif ($age > 60*60*2) {
 580                 $age_str = int $age/60/60;
 581                 $age_str .= " hours ago";
 582         } elsif ($age > 60*2) {
 583                 $age_str = int $age/60;
 584                 $age_str .= " min ago";
 585         } elsif ($age > 2) {
 586                 $age_str = int $age;
 587                 $age_str .= " sec ago";
 588         } else {
 589                 $age_str .= " right now";
 590         }
 591         return $age_str;
 592 }
 593
 594 # convert file mode in octal to symbolic file mode string
 595 sub mode_str {
 596         my $mode = oct shift;
 597
 598         if (S_ISDIR($mode & S_IFMT)) {
 599                 return 'drwxr-xr-x';
 600         } elsif (S_ISLNK($mode)) {
 601                 return 'lrwxrwxrwx';
 602         } elsif (S_ISREG($mode)) {
 603                 # git cares only about the executable bit
 604                 if ($mode & S_IXUSR) {
 605                         return '-rwxr-xr-x';
 606                 } else {
 607                         return '-rw-r--r--';
 608                 };
 609         } else {
 610                 return '----------';
 611         }
 612 }
 613
 614 # convert file mode in octal to file type string
 615 sub file_type {
 616         my $mode = shift;
 617
 618         if ($mode !~ m/^[0-7]+$/) {
 619                 return $mode;
 620         } else {
 621                 $mode = oct $mode;
 622         }
 623
 624         if (S_ISDIR($mode & S_IFMT)) {
 625                 return "directory";
 626         } elsif (S_ISLNK($mode)) {
 627                 return "symlink";
 628         } elsif (S_ISREG($mode)) {
 629                 return "file";
 630         } else {
 631                 return "unknown";
 632         }
 633 }
 634
 635 ## ----------------------------------------------------------------------
 636 ## functions returning short HTML fragments, or transforming HTML fragments
 637 ## which don't beling to other sections
 638
 639 # format line of commit message or tag comment
 640 sub format_log_line_html {
 641         my $line = shift;
 642
 643         $line = esc_html($line);
 644         $line =~ s/ /&nbsp;/g;
 645         if ($line =~ m/([0-9a-fA-F]{40})/) {
 646                 my $hash_text = $1;
 647                 if (git_get_type($hash_text) eq "commit") {
 648                         my $link =
 649                                 $cgi->a({-href => href(action=>"commit", hash=>$hash_text),
 650                                         -class => "text"}, $hash_text);
 651                         $line =~ s/$hash_text/$link/;
 652                 }
 653         }
 654         return $line;
 655 }
 656
 657 # format marker of refs pointing to given object
 658 sub format_ref_marker {
 659         my ($refs, $id) = @_;
 660         my $markers = '';
 661
 662         if (defined $refs->{$id}) {
 663                 foreach my $ref (@{$refs->{$id}}) {
 664                         my ($type, $name) = qw();
 665                         # e.g. tags/v2.6.11 or heads/next
 666                         if ($ref =~ m!^(.*?)s?/(.*)$!) {
 667                                 $type = $1;
 668                                 $name = $2;
 669                         } else {
 670                                 $type = "ref";
 671                                 $name = $ref;
 672                         }
 673
 674                         $markers .= " <span class=\"$type\">" . esc_html($name) . "</span>";
 675                 }
 676         }
 677
 678         if ($markers) {
 679                 return ' <span class="refs">'. $markers . '</span>';
 680         } else {
 681                 return "";
 682         }
 683 }
 684
 685 # format, perhaps shortened and with markers, title line
 686 sub format_subject_html {
 687         my ($long, $short, $href, $extra) = @_;
 688         $extra = '' unless defined($extra);
 689
 690         if (length($short) < length($long)) {
 691                 return $cgi->a({-href => $href, -class => "list subject",
 692                                 -title => decode("utf8", $long, Encode::FB_DEFAULT)},
 693                        esc_html($short) . $extra);
 694         } else {
 695                 return $cgi->a({-href => $href, -class => "list subject"},
 696                        esc_html($long)  . $extra);
 697         }
 698 }
 699
 700 sub format_diff_line {
 701         my $line = shift;
 702         my $char = substr($line, 0, 1);
 703         my $diff_class = "";
 704
 705         chomp $line;
 706
 707         if ($char eq '+') {
 708                 $diff_class = " add";
 709         } elsif ($char eq "-") {
 710                 $diff_class = " rem";
 711         } elsif ($char eq "@") {
 712                 $diff_class = " chunk_header";
 713         } elsif ($char eq "\\") {
 714                 $diff_class = " incomplete";
 715         }
 716         $line = untabify($line);
 717         return "<div class=\"diff$diff_class\">" . esc_html($line) . "</div>\n";
 718 }
 719
 720 ## ----------------------------------------------------------------------
 721 ## git utility subroutines, invoking git commands
 722
 723 # returns path to the core git executable and the --git-dir parameter as list
 724 sub git_cmd {
 725         return $GIT, '--git-dir='.$git_dir;
 726 }
 727
 728 # returns path to the core git executable and the --git-dir parameter as string
 729 sub git_cmd_str {
 730         return join(' ', git_cmd());
 731 }
 732
 733 # get HEAD ref of given project as hash
 734 sub git_get_head_hash {
 735         my $project = shift;
 736         my $o_git_dir = $git_dir;
 737         my $retval = undef;
 738         $git_dir = "$projectroot/$project";
 739         if (open my $fd, "-|", git_cmd(), "rev-parse", "--verify", "HEAD") {
 740                 my $head = <$fd>;
 741                 close $fd;
 742                 if (defined $head && $head =~ /^([0-9a-fA-F]{40})$/) {
 743                         $retval = $1;
 744                 }
 745         }
 746         if (defined $o_git_dir) {
 747                 $git_dir = $o_git_dir;
 748         }
 749         return $retval;
 750 }
 751
 752 # get type of given object
 753 sub git_get_type {
 754         my $hash = shift;
 755
 756         open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
 757         my $type = <$fd>;
 758         close $fd or return;
 759         chomp $type;
 760         return $type;
 761 }
 762
 763 sub git_get_project_config {
 764         my ($key, $type) = @_;
 765
 766         return unless ($key);
 767         $key =~ s/^gitweb\.//;
 768         return if ($key =~ m/\W/);
 769
 770         my @x = (git_cmd(), 'repo-config');
 771         if (defined $type) { push @x, $type; }
 772         push @x, "--get";
 773         push @x, "gitweb.$key";
 774         my $val = qx(@x);
 775         chomp $val;
 776         return ($val);
 777 }
 778
 779 # get hash of given path at given ref
 780 sub git_get_hash_by_path {
 781         my $base = shift;
 782         my $path = shift || return undef;
 783         my $type = shift;
 784
 785         $path =~ s,/+$,,;
 786
 787         open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
 788                 or die_error(undef, "Open git-ls-tree failed");
 789         my $line = <$fd>;
 790         close $fd or return undef;
 791
 792         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
 793         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
 794         if (defined $type && $type ne $2) {
 795                 # type doesn't match
 796                 return undef;
 797         }
 798         return $3;
 799 }
 800
 801 ## ......................................................................
 802 ## git utility functions, directly accessing git repository
 803
 804 sub git_get_project_description {
 805         my $path = shift;
 806
 807         open my $fd, "$projectroot/$path/description" or return undef;
 808         my $descr = <$fd>;
 809         close $fd;
 810         chomp $descr;
 811         return $descr;
 812 }
 813
 814 sub git_get_project_url_list {
 815         my $path = shift;
 816
 817         open my $fd, "$projectroot/$path/cloneurl" or return;
 818         my @git_project_url_list = map { chomp; $_ } <$fd>;
 819         close $fd;
 820
 821         return wantarray ? @git_project_url_list : \@git_project_url_list;
 822 }
 823
 824 sub git_get_projects_list {
 825         my @list;
 826
 827         if (-d $projects_list) {
 828                 # search in directory
 829                 my $dir = $projects_list;
 830                 my $pfxlen = length("$dir");
 831
 832                 File::Find::find({
 833                         follow_fast => 1, # follow symbolic links
 834                         dangling_symlinks => 0, # ignore dangling symlinks, silently
 835                         wanted => sub {
 836                                 # skip project-list toplevel, if we get it.
 837                                 return if (m!^[/.]$!);
 838                                 # only directories can be git repositories
 839                                 return unless (-d $_);
 840
 841                                 my $subdir = substr($File::Find::name, $pfxlen + 1);
 842                                 # we check related file in $projectroot
 843                                 if (check_export_ok("$projectroot/$subdir")) {
 844                                         push @list, { path => $subdir };
 845                                         $File::Find::prune = 1;
 846                                 }
 847                         },
 848                 }, "$dir");
 849
 850         } elsif (-f $projects_list) {
 851                 # read from file(url-encoded):
 852                 # 'git%2Fgit.git Linus+Torvalds'
 853                 # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 854                 # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 855                 open my ($fd), $projects_list or return;
 856                 while (my $line = <$fd>) {
 857                         chomp $line;
 858                         my ($path, $owner) = split ' ', $line;
 859                         $path = unescape($path);
 860                         $owner = unescape($owner);
 861                         if (!defined $path) {
 862                                 next;
 863                         }
 864                         if (check_export_ok("$projectroot/$path")) {
 865                                 my $pr = {
 866                                         path => $path,
 867                                         owner => decode("utf8", $owner, Encode::FB_DEFAULT),
 868                                 };
 869                                 push @list, $pr
 870                         }
 871                 }
 872                 close $fd;
 873         }
 874         @list = sort {$a->{'path'} cmp $b->{'path'}} @list;
 875         return @list;
 876 }
 877
 878 sub git_get_project_owner {
 879         my $project = shift;
 880         my $owner;
 881
 882         return undef unless $project;
 883
 884         # read from file (url-encoded):
 885         # 'git%2Fgit.git Linus+Torvalds'
 886         # 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
 887         # 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
 888         if (-f $projects_list) {
 889                 open (my $fd , $projects_list);
 890                 while (my $line = <$fd>) {
 891                         chomp $line;
 892                         my ($pr, $ow) = split ' ', $line;
 893                         $pr = unescape($pr);
 894                         $ow = unescape($ow);
 895                         if ($pr eq $project) {
 896                                 $owner = decode("utf8", $ow, Encode::FB_DEFAULT);
 897                                 last;
 898                         }
 899                 }
 900                 close $fd;
 901         }
 902         if (!defined $owner) {
 903                 $owner = get_file_owner("$projectroot/$project");
 904         }
 905
 906         return $owner;
 907 }
 908
 909 sub git_get_references {
 910         my $type = shift || "";
 911         my %refs;
 912         # 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c      refs/tags/v2.6.11
 913         # c39ae07f393806ccf406ef966e9a15afc43cc36a      refs/tags/v2.6.11^{}
 914         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
 915                 or return;
 916
 917         while (my $line = <$fd>) {
 918                 chomp $line;
 919                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?[^\^]+)/) {
 920                         if (defined $refs{$1}) {
 921                                 push @{$refs{$1}}, $2;
 922                         } else {
 923                                 $refs{$1} = [ $2 ];
 924                         }
 925                 }
 926         }
 927         close $fd or return;
 928         return \%refs;
 929 }
 930
 931 sub git_get_rev_name_tags {
 932         my $hash = shift || return undef;
 933
 934         open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
 935                 or return;
 936         my $name_rev = <$fd>;
 937         close $fd;
 938
 939         if ($name_rev =~ m|^$hash tags/(.*)$|) {
 940                 return $1;
 941         } else {
 942                 # catches also '$hash undefined' output
 943                 return undef;
 944         }
 945 }
 946
 947 ## ----------------------------------------------------------------------
 948 ## parse to hash functions
 949
 950 sub parse_date {
 951         my $epoch = shift;
 952         my $tz = shift || "-0000";
 953
 954         my %date;
 955         my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
 956         my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
 957         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
 958         $date{'hour'} = $hour;
 959         $date{'minute'} = $min;
 960         $date{'mday'} = $mday;
 961         $date{'day'} = $days[$wday];
 962         $date{'month'} = $months[$mon];
 963         $date{'rfc2822'} = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
 964                            $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
 965         $date{'mday-time'} = sprintf "%d %s %02d:%02d",
 966                              $mday, $months[$mon], $hour ,$min;
 967
 968         $tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
 969         my $local = $epoch + ((int $1 + ($2/60)) * 3600);
 970         ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
 971         $date{'hour_local'} = $hour;
 972         $date{'minute_local'} = $min;
 973         $date{'tz_local'} = $tz;
 974         return %date;
 975 }
 976
 977 sub parse_tag {
 978         my $tag_id = shift;
 979         my %tag;
 980         my @comment;
 981
 982         open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
 983         $tag{'id'} = $tag_id;
 984         while (my $line = <$fd>) {
 985                 chomp $line;
 986                 if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
 987                         $tag{'object'} = $1;
 988                 } elsif ($line =~ m/^type (.+)$/) {
 989                         $tag{'type'} = $1;
 990                 } elsif ($line =~ m/^tag (.+)$/) {
 991                         $tag{'name'} = $1;
 992                 } elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
 993                         $tag{'author'} = $1;
 994                         $tag{'epoch'} = $2;
 995                         $tag{'tz'} = $3;
 996                 } elsif ($line =~ m/--BEGIN/) {
 997                         push @comment, $line;
 998                         last;
 999                 } elsif ($line eq "") {
1000                         last;
1001                 }
1002         }
1003         push @comment, <$fd>;
1004         $tag{'comment'} = \@comment;
1005         close $fd or return;
1006         if (!defined $tag{'name'}) {
1007                 return
1008         };
1009         return %tag
1010 }
1011
1012 sub git_get_last_activity {
1013         my ($path) = @_;
1014         my $fd;
1015
1016         $git_dir = "$projectroot/$path";
1017         open($fd, "-|", git_cmd(), 'for-each-ref',
1018              '--format=%(refname) %(committer)',
1019              '--sort=-committerdate',
1020              'refs/heads') or return;
1021         my $most_recent = <$fd>;
1022         close $fd or return;
1023         if ($most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
1024                 my $timestamp = $1;
1025                 my $age = time - $timestamp;
1026                 return ($age, age_string($age));
1027         }
1028 }
1029
1030 sub parse_commit {
1031         my $commit_id = shift;
1032         my $commit_text = shift;
1033
1034         my @commit_lines;
1035         my %co;
1036
1037         if (defined $commit_text) {
1038                 @commit_lines = @$commit_text;
1039         } else {
1040                 $/ = "\0";
1041                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", "--max-count=1", $commit_id
1042                         or return;
1043                 @commit_lines = split '\n', <$fd>;
1044                 close $fd or return;
1045                 $/ = "\n";
1046                 pop @commit_lines;
1047         }
1048         my $header = shift @commit_lines;
1049         if (!($header =~ m/^[0-9a-fA-F]{40}/)) {
1050                 return;
1051         }
1052         ($co{'id'}, my @parents) = split ' ', $header;
1053         $co{'parents'} = \@parents;
1054         $co{'parent'} = $parents[0];
1055         while (my $line = shift @commit_lines) {
1056                 last if $line eq "\n";
1057                 if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
1058                         $co{'tree'} = $1;
1059                 } elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
1060                         $co{'author'} = $1;
1061                         $co{'author_epoch'} = $2;
1062                         $co{'author_tz'} = $3;
1063                         if ($co{'author'} =~ m/^([^<]+) </) {
1064                                 $co{'author_name'} = $1;
1065                         } else {
1066                                 $co{'author_name'} = $co{'author'};
1067                         }
1068                 } elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
1069                         $co{'committer'} = $1;
1070                         $co{'committer_epoch'} = $2;
1071                         $co{'committer_tz'} = $3;
1072                         $co{'committer_name'} = $co{'committer'};
1073                         $co{'committer_name'} =~ s/ <.*//;
1074                 }
1075         }
1076         if (!defined $co{'tree'}) {
1077                 return;
1078         };
1079
1080         foreach my $title (@commit_lines) {
1081                 $title =~ s/^    //;
1082                 if ($title ne "") {
1083                         $co{'title'} = chop_str($title, 80, 5);
1084                         # remove leading stuff of merges to make the interesting part visible
1085                         if (length($title) > 50) {
1086                                 $title =~ s/^Automatic //;
1087                                 $title =~ s/^merge (of|with) /Merge ... /i;
1088                                 if (length($title) > 50) {
1089                                         $title =~ s/(http|rsync):\/\///;
1090                                 }
1091                                 if (length($title) > 50) {
1092                                         $title =~ s/(master|www|rsync)\.//;
1093                                 }
1094                                 if (length($title) > 50) {
1095                                         $title =~ s/kernel.org:?//;
1096                                 }
1097                                 if (length($title) > 50) {
1098                                         $title =~ s/\/pub\/scm//;
1099                                 }
1100                         }
1101                         $co{'title_short'} = chop_str($title, 50, 5);
1102                         last;
1103                 }
1104         }
1105         # remove added spaces
1106         foreach my $line (@commit_lines) {
1107                 $line =~ s/^    //;
1108         }
1109         $co{'comment'} = \@commit_lines;
1110
1111         my $age = time - $co{'committer_epoch'};
1112         $co{'age'} = $age;
1113         $co{'age_string'} = age_string($age);
1114         my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
1115         if ($age > 60*60*24*7*2) {
1116                 $co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1117                 $co{'age_string_age'} = $co{'age_string'};
1118         } else {
1119                 $co{'age_string_date'} = $co{'age_string'};
1120                 $co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
1121         }
1122         return %co;
1123 }
1124
1125 # parse ref from ref_file, given by ref_id, with given type
1126 sub parse_ref {
1127         my $ref_file = shift;
1128         my $ref_id = shift;
1129         my $type = shift || git_get_type($ref_id);
1130         my %ref_item;
1131
1132         $ref_item{'type'} = $type;
1133         $ref_item{'id'} = $ref_id;
1134         $ref_item{'epoch'} = 0;
1135         $ref_item{'age'} = "unknown";
1136         if ($type eq "tag") {
1137                 my %tag = parse_tag($ref_id);
1138                 $ref_item{'comment'} = $tag{'comment'};
1139                 if ($tag{'type'} eq "commit") {
1140                         my %co = parse_commit($tag{'object'});
1141                         $ref_item{'epoch'} = $co{'committer_epoch'};
1142                         $ref_item{'age'} = $co{'age_string'};
1143                 } elsif (defined($tag{'epoch'})) {
1144                         my $age = time - $tag{'epoch'};
1145                         $ref_item{'epoch'} = $tag{'epoch'};
1146                         $ref_item{'age'} = age_string($age);
1147                 }
1148                 $ref_item{'reftype'} = $tag{'type'};
1149                 $ref_item{'name'} = $tag{'name'};
1150                 $ref_item{'refid'} = $tag{'object'};
1151         } elsif ($type eq "commit"){
1152                 my %co = parse_commit($ref_id);
1153                 $ref_item{'reftype'} = "commit";
1154                 $ref_item{'name'} = $ref_file;
1155                 $ref_item{'title'} = $co{'title'};
1156                 $ref_item{'refid'} = $ref_id;
1157                 $ref_item{'epoch'} = $co{'committer_epoch'};
1158                 $ref_item{'age'} = $co{'age_string'};
1159         } else {
1160                 $ref_item{'reftype'} = $type;
1161                 $ref_item{'name'} = $ref_file;
1162                 $ref_item{'refid'} = $ref_id;
1163         }
1164
1165         return %ref_item;
1166 }
1167
1168 # parse line of git-diff-tree "raw" output
1169 sub parse_difftree_raw_line {
1170         my $line = shift;
1171         my %res;
1172
1173         # ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M   ls-files.c'
1174         # ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M   rev-tree.c'
1175         if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
1176                 $res{'from_mode'} = $1;
1177                 $res{'to_mode'} = $2;
1178                 $res{'from_id'} = $3;
1179                 $res{'to_id'} = $4;
1180                 $res{'status'} = $5;
1181                 $res{'similarity'} = $6;
1182                 if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
1183                         ($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
1184                 } else {
1185                         $res{'file'} = unquote($7);
1186                 }
1187         }
1188         # 'c512b523472485aef4fff9e57b229d9d243c967f'
1189         elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
1190                 $res{'commit'} = $1;
1191         }
1192
1193         return wantarray ? %res : \%res;
1194 }
1195
1196 # parse line of git-ls-tree output
1197 sub parse_ls_tree_line ($;%) {
1198         my $line = shift;
1199         my %opts = @_;
1200         my %res;
1201
1202         #'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa  panic.c'
1203         $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/;
1204
1205         $res{'mode'} = $1;
1206         $res{'type'} = $2;
1207         $res{'hash'} = $3;
1208         if ($opts{'-z'}) {
1209                 $res{'name'} = $4;
1210         } else {
1211                 $res{'name'} = unquote($4);
1212         }
1213
1214         return wantarray ? %res : \%res;
1215 }
1216
1217 ## ......................................................................
1218 ## parse to array of hashes functions
1219
1220 sub git_get_refs_list {
1221         my $type = shift || "";
1222         my %refs;
1223         my @reflist;
1224
1225         my @refs;
1226         open my $fd, "-|", $GIT, "peek-remote", "$projectroot/$project/"
1227                 or return;
1228         while (my $line = <$fd>) {
1229                 chomp $line;
1230                 if ($line =~ m/^([0-9a-fA-F]{40})\trefs\/($type\/?([^\^]+))(\^\{\})?$/) {
1231                         if (defined $refs{$1}) {
1232                                 push @{$refs{$1}}, $2;
1233                         } else {
1234                                 $refs{$1} = [ $2 ];
1235                         }
1236
1237                         if (! $4) { # unpeeled, direct reference
1238                                 push @refs, { hash => $1, name => $3 }; # without type
1239                         } elsif ($3 eq $refs[-1]{'name'}) {
1240                                 # most likely a tag is followed by its peeled
1241                                 # (deref) one, and when that happens we know the
1242                                 # previous one was of type 'tag'.
1243                                 $refs[-1]{'type'} = "tag";
1244                         }
1245                 }
1246         }
1247         close $fd;
1248
1249         foreach my $ref (@refs) {
1250                 my $ref_file = $ref->{'name'};
1251                 my $ref_id   = $ref->{'hash'};
1252
1253                 my $type = $ref->{'type'} || git_get_type($ref_id) || next;
1254                 my %ref_item = parse_ref($ref_file, $ref_id, $type);
1255
1256                 push @reflist, \%ref_item;
1257         }
1258         # sort refs by age
1259         @reflist = sort {$b->{'epoch'} <=> $a->{'epoch'}} @reflist;
1260         return (\@reflist, \%refs);
1261 }
1262
1263 ## ----------------------------------------------------------------------
1264 ## filesystem-related functions
1265
1266 sub get_file_owner {
1267         my $path = shift;
1268
1269         my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
1270         my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
1271         if (!defined $gcos) {
1272                 return undef;
1273         }
1274         my $owner = $gcos;
1275         $owner =~ s/[,;].*$//;
1276         return decode("utf8", $owner, Encode::FB_DEFAULT);
1277 }
1278
1279 ## ......................................................................
1280 ## mimetype related functions
1281
1282 sub mimetype_guess_file {
1283         my $filename = shift;
1284         my $mimemap = shift;
1285         -r $mimemap or return undef;
1286
1287         my %mimemap;
1288         open(MIME, $mimemap) or return undef;
1289         while (<MIME>) {
1290                 next if m/^#/; # skip comments
1291                 my ($mime, $exts) = split(/\t+/);
1292                 if (defined $exts) {
1293                         my @exts = split(/\s+/, $exts);
1294                         foreach my $ext (@exts) {
1295                                 $mimemap{$ext} = $mime;
1296                         }
1297                 }
1298         }
1299         close(MIME);
1300
1301         $filename =~ /\.([^.]*)$/;
1302         return $mimemap{$1};
1303 }
1304
1305 sub mimetype_guess {
1306         my $filename = shift;
1307         my $mime;
1308         $filename =~ /\./ or return undef;
1309
1310         if ($mimetypes_file) {
1311                 my $file = $mimetypes_file;
1312                 if ($file !~ m!^/!) { # if it is relative path
1313                         # it is relative to project
1314                         $file = "$projectroot/$project/$file";
1315                 }
1316                 $mime = mimetype_guess_file($filename, $file);
1317         }
1318         $mime ||= mimetype_guess_file($filename, '/etc/mime.types');
1319         return $mime;
1320 }
1321
1322 sub blob_mimetype {
1323         my $fd = shift;
1324         my $filename = shift;
1325
1326         if ($filename) {
1327                 my $mime = mimetype_guess($filename);
1328                 $mime and return $mime;
1329         }
1330
1331         # just in case
1332         return $default_blob_plain_mimetype unless $fd;
1333
1334         if (-T $fd) {
1335                 return 'text/plain' .
1336                        ($default_text_plain_charset ? '; charset='.$default_text_plain_charset : '');
1337         } elsif (! $filename) {
1338                 return 'application/octet-stream';
1339         } elsif ($filename =~ m/\.png$/i) {
1340                 return 'image/png';
1341         } elsif ($filename =~ m/\.gif$/i) {
1342                 return 'image/gif';
1343         } elsif ($filename =~ m/\.jpe?g$/i) {
1344                 return 'image/jpeg';
1345         } else {
1346                 return 'application/octet-stream';
1347         }
1348 }
1349
1350 ## ======================================================================
1351 ## functions printing HTML: header, footer, error page
1352
1353 sub git_header_html {
1354         my $status = shift || "200 OK";
1355         my $expires = shift;
1356
1357         my $title = "$site_name git";
1358         if (defined $project) {
1359                 $title .= " - $project";
1360                 if (defined $action) {
1361                         $title .= "/$action";
1362                         if (defined $file_name) {
1363                                 $title .= " - " . esc_html($file_name);
1364                                 if ($action eq "tree" && $file_name !~ m|/$|) {
1365                                         $title .= "/";
1366                                 }
1367                         }
1368                 }
1369         }
1370         my $content_type;
1371         # require explicit support from the UA if we are to send the page as
1372         # 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
1373         # we have to do this because MSIE sometimes globs '*/*', pretending to
1374         # support xhtml+xml but choking when it gets what it asked for.
1375         if (defined $cgi->http('HTTP_ACCEPT') &&
1376             $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
1377             $cgi->Accept('application/xhtml+xml') != 0) {
1378                 $content_type = 'application/xhtml+xml';
1379         } else {
1380                 $content_type = 'text/html';
1381         }
1382         print $cgi->header(-type=>$content_type, -charset => 'utf-8',
1383                            -status=> $status, -expires => $expires);
1384         print <<EOF;
1385 <?xml version="1.0" encoding="utf-8"?>
1386 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
1387 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
1388 <!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
1389 <!-- git core binaries version $git_version -->
1390 <head>
1391 <meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
1392 <meta name="generator" content="gitweb/$version git/$git_version"/>
1393 <meta name="robots" content="index, nofollow"/>
1394 <title>$title</title>
1395 EOF
1396 # print out each stylesheet that exist
1397         if (defined $stylesheet) {
1398 #provides backwards capability for those people who define style sheet in a config file
1399                 print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1400         } else {
1401                 foreach my $stylesheet (@stylesheets) {
1402                         next unless $stylesheet;
1403                         print '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'"/>'."\n";
1404                 }
1405         }
1406         if (defined $project) {
1407                 printf('<link rel="alternate" title="%s log" '.
1408                        'href="%s" type="application/rss+xml"/>'."\n",
1409                        esc_param($project), href(action=>"rss"));
1410         } else {
1411                 printf('<link rel="alternate" title="%s projects list" '.
1412                        'href="%s" type="text/plain; charset=utf-8"/>'."\n",
1413                        $site_name, href(project=>undef, action=>"project_index"));
1414                 printf('<link rel="alternate" title="%s projects logs" '.
1415                        'href="%s" type="text/x-opml"/>'."\n",
1416                        $site_name, href(project=>undef, action=>"opml"));
1417         }
1418         if (defined $favicon) {
1419                 print qq(<link rel="shortcut icon" href="$favicon" type="image/png"/>\n);
1420         }
1421
1422         print "</head>\n" .
1423               "<body>\n";
1424
1425         if (-f $site_header) {
1426                 open (my $fd, $site_header);
1427                 print <$fd>;
1428                 close $fd;
1429         }
1430
1431         print "<div class=\"page_header\">\n" .
1432               "<a href=\"http://www.kernel.org/pub/software/scm/git/docs/\" title=\"git documentation\">" .
1433               "<img src=\"$logo\" width=\"72\" height=\"27\" alt=\"git\" style=\"float:right; border-width:0px;\"/>" .
1434               "</a>\n";
1435         print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
1436         if (defined $project) {
1437                 print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
1438                 if (defined $action) {
1439                         print " / $action";
1440                 }
1441                 print "\n";
1442                 if (!defined $searchtext) {
1443                         $searchtext = "";
1444                 }
1445                 my $search_hash;
1446                 if (defined $hash_base) {
1447                         $search_hash = $hash_base;
1448                 } elsif (defined $hash) {
1449                         $search_hash = $hash;
1450                 } else {
1451                         $search_hash = "HEAD";
1452                 }
1453                 $cgi->param("a", "search");
1454                 $cgi->param("h", $search_hash);
1455                 print $cgi->startform(-method => "get", -action => $my_uri) .
1456                       "<div class=\"search\">\n" .
1457                       $cgi->hidden(-name => "p") . "\n" .
1458                       $cgi->hidden(-name => "a") . "\n" .
1459                       $cgi->hidden(-name => "h") . "\n" .
1460                       $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
1461                       "</div>" .
1462                       $cgi->end_form() . "\n";
1463         }
1464         print "</div>\n";
1465 }
1466
1467 sub git_footer_html {
1468         print "<div class=\"page_footer\">\n";
1469         if (defined $project) {
1470                 my $descr = git_get_project_description($project);
1471                 if (defined $descr) {
1472                         print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
1473                 }
1474                 print $cgi->a({-href => href(action=>"rss"),
1475                               -class => "rss_logo"}, "RSS") . "\n";
1476         } else {
1477                 print $cgi->a({-href => href(project=>undef, action=>"opml"),
1478                               -class => "rss_logo"}, "OPML") . " ";
1479                 print $cgi->a({-href => href(project=>undef, action=>"project_index"),
1480                               -class => "rss_logo"}, "TXT") . "\n";
1481         }
1482         print "</div>\n" ;
1483
1484         if (-f $site_footer) {
1485                 open (my $fd, $site_footer);
1486                 print <$fd>;
1487                 close $fd;
1488         }
1489
1490         print "</body>\n" .
1491               "</html>";
1492 }
1493
1494 sub die_error {
1495         my $status = shift || "403 Forbidden";
1496         my $error = shift || "Malformed query, file missing or permission denied";
1497
1498         git_header_html($status);
1499         print <<EOF;
1500 <div class="page_body">
1501 <br /><br />
1502 $status - $error
1503 <br />
1504 </div>
1505 EOF
1506         git_footer_html();
1507         exit;
1508 }
1509
1510 ## ----------------------------------------------------------------------
1511 ## functions printing or outputting HTML: navigation
1512
1513 sub git_print_page_nav {
1514         my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
1515         $extra = '' if !defined $extra; # pager or formats
1516
1517         my @navs = qw(summary shortlog log commit commitdiff tree);
1518         if ($suppress) {
1519                 @navs = grep { $_ ne $suppress } @navs;
1520         }
1521
1522         my %arg = map { $_ => {action=>$_} } @navs;
1523         if (defined $head) {
1524                 for (qw(commit commitdiff)) {
1525                         $arg{$_}{hash} = $head;
1526                 }
1527                 if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
1528                         for (qw(shortlog log)) {
1529                                 $arg{$_}{hash} = $head;
1530                         }
1531                 }
1532         }
1533         $arg{tree}{hash} = $treehead if defined $treehead;
1534         $arg{tree}{hash_base} = $treebase if defined $treebase;
1535
1536         print "<div class=\"page_nav\">\n" .
1537                 (join " | ",
1538                  map { $_ eq $current ?
1539                        $_ : $cgi->a({-href => href(%{$arg{$_}})}, "$_")
1540                  } @navs);
1541         print "<br/>\n$extra<br/>\n" .
1542               "</div>\n";
1543 }
1544
1545 sub format_paging_nav {
1546         my ($action, $hash, $head, $page, $nrevs) = @_;
1547         my $paging_nav;
1548
1549
1550         if ($hash ne $head || $page) {
1551                 $paging_nav .= $cgi->a({-href => href(action=>$action)}, "HEAD");
1552         } else {
1553                 $paging_nav .= "HEAD";
1554         }
1555
1556         if ($page > 0) {
1557                 $paging_nav .= " &sdot; " .
1558                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page-1),
1559                                  -accesskey => "p", -title => "Alt-p"}, "prev");
1560         } else {
1561                 $paging_nav .= " &sdot; prev";
1562         }
1563
1564         if ($nrevs >= (100 * ($page+1)-1)) {
1565                 $paging_nav .= " &sdot; " .
1566                         $cgi->a({-href => href(action=>$action, hash=>$hash, page=>$page+1),
1567                                  -accesskey => "n", -title => "Alt-n"}, "next");
1568         } else {
1569                 $paging_nav .= " &sdot; next";
1570         }
1571
1572         return $paging_nav;
1573 }
1574
1575 ## ......................................................................
1576 ## functions printing or outputting HTML: div
1577
1578 sub git_print_header_div {
1579         my ($action, $title, $hash, $hash_base) = @_;
1580         my %args = ();
1581
1582         $args{action} = $action;
1583         $args{hash} = $hash if $hash;
1584         $args{hash_base} = $hash_base if $hash_base;
1585
1586         print "<div class=\"header\">\n" .
1587               $cgi->a({-href => href(%args), -class => "title"},
1588               $title ? $title : $action) .
1589               "\n</div>\n";
1590 }
1591
1592 #sub git_print_authorship (\%) {
1593 sub git_print_authorship {
1594         my $co = shift;
1595
1596         my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
1597         print "<div class=\"author_date\">" .
1598               esc_html($co->{'author_name'}) .
1599               " [$ad{'rfc2822'}";
1600         if ($ad{'hour_local'} < 6) {
1601                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
1602                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1603         } else {
1604                 printf(" (%02d:%02d %s)",
1605                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
1606         }
1607         print "]</div>\n";
1608 }
1609
1610 sub git_print_page_path {
1611         my $name = shift;
1612         my $type = shift;
1613         my $hb = shift;
1614
1615         if (!defined $name) {
1616                 print "<div class=\"page_path\">/</div>\n";
1617         } else {
1618                 my @dirname = split '/', $name;
1619                 my $basename = pop @dirname;
1620                 my $fullname = '';
1621
1622                 print "<div class=\"page_path\">";
1623                 print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
1624                               -title => 'tree root'}, "[$project]");
1625                 print " / ";
1626                 foreach my $dir (@dirname) {
1627                         $fullname .= ($fullname ? '/' : '') . $dir;
1628                         print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
1629                                                      hash_base=>$hb),
1630                                       -title => $fullname}, esc_html($dir));
1631                         print " / ";
1632                 }
1633                 if (defined $type && $type eq 'blob') {
1634                         print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
1635                                                      hash_base=>$hb),
1636                                       -title => $name}, esc_html($basename));
1637                 } elsif (defined $type && $type eq 'tree') {
1638                         print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
1639                                                      hash_base=>$hb),
1640                                       -title => $name}, esc_html($basename));
1641                 } else {
1642                         print esc_html($basename);
1643                 }
1644                 print "<br/></div>\n";
1645         }
1646 }
1647
1648 # sub git_print_log (\@;%) {
1649 sub git_print_log ($;%) {
1650         my $log = shift;
1651         my %opts = @_;
1652
1653         if ($opts{'-remove_title'}) {
1654                 # remove title, i.e. first line of log
1655                 shift @$log;
1656         }
1657         # remove leading empty lines
1658         while (defined $log->[0] && $log->[0] eq "") {
1659                 shift @$log;
1660         }
1661
1662         # print log
1663         my $signoff = 0;
1664         my $empty = 0;
1665         foreach my $line (@$log) {
1666                 if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
1667                         $signoff = 1;
1668                         $empty = 0;
1669                         if (! $opts{'-remove_signoff'}) {
1670                                 print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
1671                                 next;
1672                         } else {
1673                                 # remove signoff lines
1674                                 next;
1675                         }
1676                 } else {
1677                         $signoff = 0;
1678                 }
1679
1680                 # print only one empty line
1681                 # do not print empty line after signoff
1682                 if ($line eq "") {
1683                         next if ($empty || $signoff);
1684                         $empty = 1;
1685                 } else {
1686                         $empty = 0;
1687                 }
1688
1689                 print format_log_line_html($line) . "<br/>\n";
1690         }
1691
1692         if ($opts{'-final_empty_line'}) {
1693                 # end with single empty line
1694                 print "<br/>\n" unless $empty;
1695         }
1696 }
1697
1698 sub git_print_simplified_log {
1699         my $log = shift;
1700         my $remove_title = shift;
1701
1702         git_print_log($log,
1703                 -final_empty_line=> 1,
1704                 -remove_title => $remove_title);
1705 }
1706
1707 # print tree entry (row of git_tree), but without encompassing <tr> element
1708 sub git_print_tree_entry {
1709         my ($t, $basedir, $hash_base, $have_blame) = @_;
1710
1711         my %base_key = ();
1712         $base_key{hash_base} = $hash_base if defined $hash_base;
1713
1714         # The format of a table row is: mode list link.  Where mode is
1715         # the mode of the entry, list is the name of the entry, an href,
1716         # and link is the action links of the entry.
1717
1718         print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
1719         if ($t->{'type'} eq "blob") {
1720                 print "<td class=\"list\">" .
1721                         $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
1722                                                file_name=>"$basedir$t->{'name'}", %base_key),
1723                                  -class => "list"}, esc_html($t->{'name'})) . "</td>\n";
1724                 print "<td class=\"link\">";
1725                 if ($have_blame) {
1726                         print $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
1727                                                      file_name=>"$basedir$t->{'name'}", %base_key)},
1728                                       "blame");
1729                 }
1730                 if (defined $hash_base) {
1731                         if ($have_blame) {
1732                                 print " | ";
1733                         }
1734                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1735                                                      hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
1736                                       "history");
1737                 }
1738                 print " | " .
1739                         $cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
1740                                                file_name=>"$basedir$t->{'name'}")},
1741                                 "raw");
1742                 print "</td>\n";
1743
1744         } elsif ($t->{'type'} eq "tree") {
1745                 print "<td class=\"list\">";
1746                 print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
1747                                              file_name=>"$basedir$t->{'name'}", %base_key)},
1748                               esc_html($t->{'name'}));
1749                 print "</td>\n";
1750                 print "<td class=\"link\">";
1751                 if (defined $hash_base) {
1752                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
1753                                                      file_name=>"$basedir$t->{'name'}")},
1754                                       "history");
1755                 }
1756                 print "</td>\n";
1757         }
1758 }
1759
1760 ## ......................................................................
1761 ## functions printing large fragments of HTML
1762
1763 sub git_difftree_body {
1764         my ($difftree, $hash, $parent) = @_;
1765
1766         print "<div class=\"list_head\">\n";
1767         if ($#{$difftree} > 10) {
1768                 print(($#{$difftree} + 1) . " files changed:\n");
1769         }
1770         print "</div>\n";
1771
1772         print "<table class=\"diff_tree\">\n";
1773         my $alternate = 1;
1774         my $patchno = 0;
1775         foreach my $line (@{$difftree}) {
1776                 my %diff = parse_difftree_raw_line($line);
1777
1778                 if ($alternate) {
1779                         print "<tr class=\"dark\">\n";
1780                 } else {
1781                         print "<tr class=\"light\">\n";
1782                 }
1783                 $alternate ^= 1;
1784
1785                 my ($to_mode_oct, $to_mode_str, $to_file_type);
1786                 my ($from_mode_oct, $from_mode_str, $from_file_type);
1787                 if ($diff{'to_mode'} ne ('0' x 6)) {
1788                         $to_mode_oct = oct $diff{'to_mode'};
1789                         if (S_ISREG($to_mode_oct)) { # only for regular file
1790                                 $to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
1791                         }
1792                         $to_file_type = file_type($diff{'to_mode'});
1793                 }
1794                 if ($diff{'from_mode'} ne ('0' x 6)) {
1795                         $from_mode_oct = oct $diff{'from_mode'};
1796                         if (S_ISREG($to_mode_oct)) { # only for regular file
1797                                 $from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
1798                         }
1799                         $from_file_type = file_type($diff{'from_mode'});
1800                 }
1801
1802                 if ($diff{'status'} eq "A") { # created
1803                         my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
1804                         $mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
1805                         $mode_chng   .= "]</span>";
1806                         print "<td>";
1807                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1808                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1809                                        -class => "list"}, esc_html($diff{'file'}));
1810                         print "</td>\n";
1811                         print "<td>$mode_chng</td>\n";
1812                         print "<td class=\"link\">";
1813                         if ($action eq 'commitdiff') {
1814                                 # link to patch
1815                                 $patchno++;
1816                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1817                         }
1818                         print "</td>\n";
1819
1820                 } elsif ($diff{'status'} eq "D") { # deleted
1821                         my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
1822                         print "<td>";
1823                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'from_id'},
1824                                                      hash_base=>$parent, file_name=>$diff{'file'}),
1825                                        -class => "list"}, esc_html($diff{'file'}));
1826                         print "</td>\n";
1827                         print "<td>$mode_chng</td>\n";
1828                         print "<td class=\"link\">";
1829                         if ($action eq 'commitdiff') {
1830                                 # link to patch
1831                                 $patchno++;
1832                                 print $cgi->a({-href => "#patch$patchno"}, "patch");
1833                                 print " | ";
1834                         }
1835                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1836                                                      file_name=>$diff{'file'})},
1837                                       "blame") . " | ";
1838                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1839                                                      file_name=>$diff{'file'})},
1840                                       "history");
1841                         print "</td>\n";
1842
1843                 } elsif ($diff{'status'} eq "M" || $diff{'status'} eq "T") { # modified, or type changed
1844                         my $mode_chnge = "";
1845                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1846                                 $mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
1847                                 if ($from_file_type != $to_file_type) {
1848                                         $mode_chnge .= " from $from_file_type to $to_file_type";
1849                                 }
1850                                 if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
1851                                         if ($from_mode_str && $to_mode_str) {
1852                                                 $mode_chnge .= " mode: $from_mode_str->$to_mode_str";
1853                                         } elsif ($to_mode_str) {
1854                                                 $mode_chnge .= " mode: $to_mode_str";
1855                                         }
1856                                 }
1857                                 $mode_chnge .= "]</span>\n";
1858                         }
1859                         print "<td>";
1860                         print $cgi->a({-href => href(action=>"blob", hash=>$diff{'to_id'},
1861                                                      hash_base=>$hash, file_name=>$diff{'file'}),
1862                                        -class => "list"}, esc_html($diff{'file'}));
1863                         print "</td>\n";
1864                         print "<td>$mode_chnge</td>\n";
1865                         print "<td class=\"link\">";
1866                         if ($diff{'to_id'} ne $diff{'from_id'}) { # modified
1867                                 if ($action eq 'commitdiff') {
1868                                         # link to patch
1869                                         $patchno++;
1870                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1871                                 } else {
1872                                         print $cgi->a({-href => href(action=>"blobdiff",
1873                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1874                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1875                                                                      file_name=>$diff{'file'})},
1876                                                       "diff");
1877                                 }
1878                                 print " | ";
1879                         }
1880                         print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
1881                                                      file_name=>$diff{'file'})},
1882                                       "blame") . " | ";
1883                         print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
1884                                                      file_name=>$diff{'file'})},
1885                                       "history");
1886                         print "</td>\n";
1887
1888                 } elsif ($diff{'status'} eq "R" || $diff{'status'} eq "C") { # renamed or copied
1889                         my %status_name = ('R' => 'moved', 'C' => 'copied');
1890                         my $nstatus = $status_name{$diff{'status'}};
1891                         my $mode_chng = "";
1892                         if ($diff{'from_mode'} != $diff{'to_mode'}) {
1893                                 # mode also for directories, so we cannot use $to_mode_str
1894                                 $mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
1895                         }
1896                         print "<td>" .
1897                               $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1898                                                      hash=>$diff{'to_id'}, file_name=>$diff{'to_file'}),
1899                                       -class => "list"}, esc_html($diff{'to_file'})) . "</td>\n" .
1900                               "<td><span class=\"file_status $nstatus\">[$nstatus from " .
1901                               $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
1902                                                      hash=>$diff{'from_id'}, file_name=>$diff{'from_file'}),
1903                                       -class => "list"}, esc_html($diff{'from_file'})) .
1904                               " with " . (int $diff{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
1905                               "<td class=\"link\">";
1906                         if ($diff{'to_id'} ne $diff{'from_id'}) {
1907                                 if ($action eq 'commitdiff') {
1908                                         # link to patch
1909                                         $patchno++;
1910                                         print $cgi->a({-href => "#patch$patchno"}, "patch");
1911                                 } else {
1912                                         print $cgi->a({-href => href(action=>"blobdiff",
1913                                                                      hash=>$diff{'to_id'}, hash_parent=>$diff{'from_id'},
1914                                                                      hash_base=>$hash, hash_parent_base=>$parent,
1915                                                                      file_name=>$diff{'to_file'}, file_parent=>$diff{'from_file'})},
1916                                                       "diff");
1917                                 }
1918                                 print " | ";
1919                         }
1920                         print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
1921                                                      file_name=>$diff{'from_file'})},
1922                                       "blame") . " | ";
1923                         print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
1924                                                      file_name=>$diff{'from_file'})},
1925                                       "history");
1926                         print "</td>\n";
1927
1928                 } # we should not encounter Unmerged (U) or Unknown (X) status
1929                 print "</tr>\n";
1930         }
1931         print "</table>\n";
1932 }
1933
1934 sub git_patchset_body {
1935         my ($fd, $difftree, $hash, $hash_parent) = @_;
1936
1937         my $patch_idx = 0;
1938         my $in_header = 0;
1939         my $patch_found = 0;
1940         my $diffinfo;
1941
1942         print "<div class=\"patchset\">\n";
1943
1944         LINE:
1945         while (my $patch_line = <$fd>) {
1946                 chomp $patch_line;
1947
1948                 if ($patch_line =~ m/^diff /) { # "git diff" header
1949                         # beginning of patch (in patchset)
1950                         if ($patch_found) {
1951                                 # close previous patch
1952                                 print "</div>\n"; # class="patch"
1953                         } else {
1954                                 # first patch in patchset
1955                                 $patch_found = 1;
1956                         }
1957                         print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
1958
1959                         if (ref($difftree->[$patch_idx]) eq "HASH") {
1960                                 $diffinfo = $difftree->[$patch_idx];
1961                         } else {
1962                                 $diffinfo = parse_difftree_raw_line($difftree->[$patch_idx]);
1963                         }
1964                         $patch_idx++;
1965
1966                         # for now, no extended header, hence we skip empty patches
1967                         # companion to  next LINE if $in_header;
1968                         if ($diffinfo->{'from_id'} eq $diffinfo->{'to_id'}) { # no change
1969                                 $in_header = 1;
1970                                 next LINE;
1971                         }
1972
1973                         if ($diffinfo->{'status'} eq "A") { # added
1974                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'to_mode'}) . ":" .
1975                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1976                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
1977                                               $diffinfo->{'to_id'}) . "(new)" .
1978                                       "</div>\n"; # class="diff_info"
1979
1980                         } elsif ($diffinfo->{'status'} eq "D") { # deleted
1981                                 print "<div class=\"diff_info\">" . file_type($diffinfo->{'from_mode'}) . ":" .
1982                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1983                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
1984                                               $diffinfo->{'from_id'}) . "(deleted)" .
1985                                       "</div>\n"; # class="diff_info"
1986
1987                         } elsif ($diffinfo->{'status'} eq "R" || # renamed
1988                                  $diffinfo->{'status'} eq "C" || # copied
1989                                  $diffinfo->{'status'} eq "2") { # with two filenames (from git_blobdiff)
1990                                 print "<div class=\"diff_info\">" .
1991                                       file_type($diffinfo->{'from_mode'}) . ":" .
1992                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
1993                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'from_file'})},
1994                                               $diffinfo->{'from_id'}) .
1995                                       " -> " .
1996                                       file_type($diffinfo->{'to_mode'}) . ":" .
1997                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
1998                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'to_file'})},
1999                                               $diffinfo->{'to_id'});
2000                                 print "</div>\n"; # class="diff_info"
2001
2002                         } else { # modified, mode changed, ...
2003                                 print "<div class=\"diff_info\">" .
2004                                       file_type($diffinfo->{'from_mode'}) . ":" .
2005                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2006                                                              hash=>$diffinfo->{'from_id'}, file_name=>$diffinfo->{'file'})},
2007                                               $diffinfo->{'from_id'}) .
2008                                       " -> " .
2009                                       file_type($diffinfo->{'to_mode'}) . ":" .
2010                                       $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2011                                                              hash=>$diffinfo->{'to_id'}, file_name=>$diffinfo->{'file'})},
2012                                               $diffinfo->{'to_id'});
2013                                 print "</div>\n"; # class="diff_info"
2014                         }
2015
2016                         #print "<div class=\"diff extended_header\">\n";
2017                         $in_header = 1;
2018                         next LINE;
2019                 } # start of patch in patchset
2020
2021
2022                 if ($in_header && $patch_line =~ m/^---/) {
2023                         #print "</div>\n"; # class="diff extended_header"
2024                         $in_header = 0;
2025
2026                         my $file = $diffinfo->{'from_file'};
2027                         $file  ||= $diffinfo->{'file'};
2028                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash_parent,
2029                                                        hash=>$diffinfo->{'from_id'}, file_name=>$file),
2030                                         -class => "list"}, esc_html($file));
2031                         $patch_line =~ s|a/.*$|a/$file|g;
2032                         print "<div class=\"diff from_file\">$patch_line</div>\n";
2033
2034                         $patch_line = <$fd>;
2035                         chomp $patch_line;
2036
2037                         #$patch_line =~ m/^+++/;
2038                         $file    = $diffinfo->{'to_file'};
2039                         $file  ||= $diffinfo->{'file'};
2040                         $file = $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
2041                                                        hash=>$diffinfo->{'to_id'}, file_name=>$file),
2042                                         -class => "list"}, esc_html($file));
2043                         $patch_line =~ s|b/.*|b/$file|g;
2044                         print "<div class=\"diff to_file\">$patch_line</div>\n";
2045
2046                         next LINE;
2047                 }
2048                 next LINE if $in_header;
2049
2050                 print format_diff_line($patch_line);
2051         }
2052         print "</div>\n" if $patch_found; # class="patch"
2053
2054         print "</div>\n"; # class="patchset"
2055 }
2056
2057 # . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2058
2059 sub git_shortlog_body {
2060         # uses global variable $project
2061         my ($revlist, $from, $to, $refs, $extra) = @_;
2062
2063         $from = 0 unless defined $from;
2064         $to = $#{$revlist} if (!defined $to || $#{$revlist} < $to);
2065
2066         print "<table class=\"shortlog\" cellspacing=\"0\">\n";
2067         my $alternate = 1;
2068         for (my $i = $from; $i <= $to; $i++) {
2069                 my $commit = $revlist->[$i];
2070                 #my $ref = defined $refs ? format_ref_marker($refs, $commit) : '';
2071                 my $ref = format_ref_marker($refs, $commit);
2072                 my %co = parse_commit($commit);
2073                 if ($alternate) {
2074                         print "<tr class=\"dark\">\n";
2075                 } else {
2076                         print "<tr class=\"light\">\n";
2077                 }
2078                 $alternate ^= 1;
2079                 # git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
2080                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2081                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 10)) . "</i></td>\n" .
2082                       "<td>";
2083                 print format_subject_html($co{'title'}, $co{'title_short'},
2084                                           href(action=>"commit", hash=>$commit), $ref);
2085                 print "</td>\n" .
2086                       "<td class=\"link\">" .
2087                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
2088                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") . " | " .
2089                       $cgi->a({-href => href(action=>"snapshot", hash=>$commit)}, "snapshot");
2090                 print "</td>\n" .
2091                       "</tr>\n";
2092         }
2093         if (defined $extra) {
2094                 print "<tr>\n" .
2095                       "<td colspan=\"4\">$extra</td>\n" .
2096                       "</tr>\n";
2097         }
2098         print "</table>\n";
2099 }
2100
2101 sub git_history_body {
2102         # Warning: assumes constant type (blob or tree) during history
2103         my ($revlist, $from, $to, $refs, $hash_base, $ftype, $extra) = @_;
2104
2105         $from = 0 unless defined $from;
2106         $to = $#{$revlist} unless (defined $to && $to <= $#{$revlist});
2107
2108         print "<table class=\"history\" cellspacing=\"0\">\n";
2109         my $alternate = 1;
2110         for (my $i = $from; $i <= $to; $i++) {
2111                 if ($revlist->[$i] !~ m/^([0-9a-fA-F]{40})/) {
2112                         next;
2113                 }
2114
2115                 my $commit = $1;
2116                 my %co = parse_commit($commit);
2117                 if (!%co) {
2118                         next;
2119                 }
2120
2121                 my $ref = format_ref_marker($refs, $commit);
2122
2123                 if ($alternate) {
2124                         print "<tr class=\"dark\">\n";
2125                 } else {
2126                         print "<tr class=\"light\">\n";
2127                 }
2128                 $alternate ^= 1;
2129                 print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
2130                       # shortlog uses      chop_str($co{'author_name'}, 10)
2131                       "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 3)) . "</i></td>\n" .
2132                       "<td>";
2133                 # originally git_history used chop_str($co{'title'}, 50)
2134                 print format_subject_html($co{'title'}, $co{'title_short'},
2135                                           href(action=>"commit", hash=>$commit), $ref);
2136                 print "</td>\n" .
2137                       "<td class=\"link\">" .
2138                       $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
2139                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
2140
2141                 if ($ftype eq 'blob') {
2142                         my $blob_current = git_get_hash_by_path($hash_base, $file_name);
2143                         my $blob_parent  = git_get_hash_by_path($commit, $file_name);
2144                         if (defined $blob_current && defined $blob_parent &&
2145                                         $blob_current ne $blob_parent) {
2146                                 print " | " .
2147                                         $cgi->a({-href => href(action=>"blobdiff",
2148                                                                hash=>$blob_current, hash_parent=>$blob_parent,
2149                                                                hash_base=>$hash_base, hash_parent_base=>$commit,
2150                                                                file_name=>$file_name)},
2151                                                 "diff to current");
2152                         }
2153                 }
2154                 print "</td>\n" .
2155                       "</tr>\n";
2156         }
2157         if (defined $extra) {
2158                 print "<tr>\n" .
2159                       "<td colspan=\"4\">$extra</td>\n" .
2160                       "</tr>\n";
2161         }
2162         print "</table>\n";
2163 }
2164
2165 sub git_tags_body {
2166         # uses global variable $project
2167         my ($taglist, $from, $to, $extra) = @_;
2168         $from = 0 unless defined $from;
2169         $to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
2170
2171         print "<table class=\"tags\" cellspacing=\"0\">\n";
2172         my $alternate = 1;
2173         for (my $i = $from; $i <= $to; $i++) {
2174                 my $entry = $taglist->[$i];
2175                 my %tag = %$entry;
2176                 my $comment_lines = $tag{'comment'};
2177                 my $comment = shift @$comment_lines;
2178                 my $comment_short;
2179                 if (defined $comment) {
2180                         $comment_short = chop_str($comment, 30, 5);
2181                 }
2182                 if ($alternate) {
2183                         print "<tr class=\"dark\">\n";
2184                 } else {
2185                         print "<tr class=\"light\">\n";
2186                 }
2187                 $alternate ^= 1;
2188                 print "<td><i>$tag{'age'}</i></td>\n" .
2189                       "<td>" .
2190                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
2191                                -class => "list name"}, esc_html($tag{'name'})) .
2192                       "</td>\n" .
2193                       "<td>";
2194                 if (defined $comment) {
2195                         print format_subject_html($comment, $comment_short,
2196                                                   href(action=>"tag", hash=>$tag{'id'}));
2197                 }
2198                 print "</td>\n" .
2199                       "<td class=\"selflink\">";
2200                 if ($tag{'type'} eq "tag") {
2201                         print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
2202                 } else {
2203                         print "&nbsp;";
2204                 }
2205                 print "</td>\n" .
2206                       "<td class=\"link\">" . " | " .
2207                       $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
2208                 if ($tag{'reftype'} eq "commit") {
2209                         print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") .
2210                               " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'refid'})}, "log");
2211                 } elsif ($tag{'reftype'} eq "blob") {
2212                         print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
2213                 }
2214                 print "</td>\n" .
2215                       "</tr>";
2216         }
2217         if (defined $extra) {
2218                 print "<tr>\n" .
2219                       "<td colspan=\"5\">$extra</td>\n" .
2220                       "</tr>\n";
2221         }
2222         print "</table>\n";
2223 }
2224
2225 sub git_heads_body {
2226         # uses global variable $project
2227         my ($headlist, $head, $from, $to, $extra) = @_;
2228         $from = 0 unless defined $from;
2229         $to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
2230
2231         print "<table class=\"heads\" cellspacing=\"0\">\n";
2232         my $alternate = 1;
2233         for (my $i = $from; $i <= $to; $i++) {
2234                 my $entry = $headlist->[$i];
2235                 my %tag = %$entry;
2236                 my $curr = $tag{'id'} eq $head;
2237                 if ($alternate) {
2238                         print "<tr class=\"dark\">\n";
2239                 } else {
2240                         print "<tr class=\"light\">\n";
2241                 }
2242                 $alternate ^= 1;
2243                 print "<td><i>$tag{'age'}</i></td>\n" .
2244                       ($tag{'id'} eq $head ? "<td class=\"current_head\">" : "<td>") .
2245                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'}),
2246                                -class => "list name"},esc_html($tag{'name'})) .
2247                       "</td>\n" .
2248                       "<td class=\"link\">" .
2249                       $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'name'})}, "shortlog") . " | " .
2250                       $cgi->a({-href => href(action=>"log", hash=>$tag{'name'})}, "log") . " | " .
2251                       $cgi->a({-href => href(action=>"tree", hash=>$tag{'name'}, hash_base=>$tag{'name'})}, "tree") .
2252                       "</td>\n" .
2253                       "</tr>";
2254         }
2255         if (defined $extra) {
2256                 print "<tr>\n" .
2257                       "<td colspan=\"3\">$extra</td>\n" .
2258                       "</tr>\n";
2259         }
2260         print "</table>\n";
2261 }
2262
2263 ## ======================================================================
2264 ## ======================================================================
2265 ## actions
2266
2267 sub git_project_list {
2268         my $order = $cgi->param('o');
2269         if (defined $order && $order !~ m/project|descr|owner|age/) {
2270                 die_error(undef, "Unknown order parameter");
2271         }
2272
2273         my @list = git_get_projects_list();
2274         my @projects;
2275         if (!@list) {
2276                 die_error(undef, "No projects found");
2277         }
2278         foreach my $pr (@list) {
2279                 my (@aa) = git_get_last_activity($pr->{'path'});
2280                 unless (@aa) {
2281                         next;
2282                 }
2283                 ($pr->{'age'}, $pr->{'age_string'}) = @aa;
2284                 if (!defined $pr->{'descr'}) {
2285                         my $descr = git_get_project_description($pr->{'path'}) || "";
2286                         $pr->{'descr'} = chop_str($descr, 25, 5);
2287                 }
2288                 if (!defined $pr->{'owner'}) {
2289                         $pr->{'owner'} = get_file_owner("$projectroot/$pr->{'path'}") || "";
2290                 }
2291                 push @projects, $pr;
2292         }
2293
2294         git_header_html();
2295         if (-f $home_text) {
2296                 print "<div class=\"index_include\">\n";
2297                 open (my $fd, $home_text);
2298                 print <$fd>;
2299                 close $fd;
2300                 print "</div>\n";
2301         }
2302         print "<table class=\"project_list\">\n" .
2303               "<tr>\n";
2304         $order ||= "project";
2305         if ($order eq "project") {
2306                 @projects = sort {$a->{'path'} cmp $b->{'path'}} @projects;
2307                 print "<th>Project</th>\n";
2308         } else {
2309                 print "<th>" .
2310                       $cgi->a({-href => href(project=>undef, order=>'project'),
2311                                -class => "header"}, "Project") .
2312                       "</th>\n";
2313         }
2314         if ($order eq "descr") {
2315                 @projects = sort {$a->{'descr'} cmp $b->{'descr'}} @projects;
2316                 print "<th>Description</th>\n";
2317         } else {
2318                 print "<th>" .
2319                       $cgi->a({-href => href(project=>undef, order=>'descr'),
2320                                -class => "header"}, "Description") .
2321                       "</th>\n";
2322         }
2323         if ($order eq "owner") {
2324                 @projects = sort {$a->{'owner'} cmp $b->{'owner'}} @projects;
2325                 print "<th>Owner</th>\n";
2326         } else {
2327                 print "<th>" .
2328                       $cgi->a({-href => href(project=>undef, order=>'owner'),
2329                                -class => "header"}, "Owner") .
2330                       "</th>\n";
2331         }
2332         if ($order eq "age") {
2333                 @projects = sort {$a->{'age'} <=> $b->{'age'}} @projects;
2334                 print "<th>Last Change</th>\n";
2335         } else {
2336                 print "<th>" .
2337                       $cgi->a({-href => href(project=>undef, order=>'age'),
2338                                -class => "header"}, "Last Change") .
2339                       "</th>\n";
2340         }
2341         print "<th></th>\n" .
2342               "</tr>\n";
2343         my $alternate = 1;
2344         foreach my $pr (@projects) {
2345                 if ($alternate) {
2346                         print "<tr class=\"dark\">\n";
2347                 } else {
2348                         print "<tr class=\"light\">\n";
2349                 }
2350                 $alternate ^= 1;
2351                 print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
2352                                         -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
2353                       "<td>" . esc_html($pr->{'descr'}) . "</td>\n" .
2354                       "<td><i>" . chop_str($pr->{'owner'}, 15) . "</i></td>\n";
2355                 print "<td class=\"". age_class($pr->{'age'}) . "\">" .
2356                       $pr->{'age_string'} . "</td>\n" .
2357                       "<td class=\"link\">" .
2358                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
2359                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
2360                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
2361                       $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
2362                       "</td>\n" .
2363                       "</tr>\n";
2364         }
2365         print "</table>\n";
2366         git_footer_html();
2367 }
2368
2369 sub git_project_index {
2370         my @projects = git_get_projects_list();
2371
2372         print $cgi->header(
2373                 -type => 'text/plain',
2374                 -charset => 'utf-8',
2375                 -content_disposition => 'inline; filename="index.aux"');
2376
2377         foreach my $pr (@projects) {
2378                 if (!exists $pr->{'owner'}) {
2379                         $pr->{'owner'} = get_file_owner("$projectroot/$project");
2380                 }
2381
2382                 my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
2383                 # quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
2384                 $path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2385                 $owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
2386                 $path  =~ s/ /\+/g;
2387                 $owner =~ s/ /\+/g;
2388
2389                 print "$path $owner\n";
2390         }
2391 }
2392
2393 sub git_summary {
2394         my $descr = git_get_project_description($project) || "none";
2395         my $head = git_get_head_hash($project);
2396         my %co = parse_commit($head);
2397         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2398
2399         my $owner = git_get_project_owner($project);
2400
2401         my ($reflist, $refs) = git_get_refs_list();
2402
2403         my @taglist;
2404         my @headlist;
2405         foreach my $ref (@$reflist) {
2406                 if ($ref->{'name'} =~ s!^heads/!!) {
2407                         push @headlist, $ref;
2408                 } else {
2409                         $ref->{'name'} =~ s!^tags/!!;
2410                         push @taglist, $ref;
2411                 }
2412         }
2413
2414         git_header_html();
2415         git_print_page_nav('summary','', $head);
2416
2417         print "<div class=\"title\">&nbsp;</div>\n";
2418         print "<table cellspacing=\"0\">\n" .
2419               "<tr><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
2420               "<tr><td>owner</td><td>$owner</td></tr>\n" .
2421               "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
2422         # use per project git URL list in $projectroot/$project/cloneurl
2423         # or make project git URL from git base URL and project name
2424         my $url_tag = "URL";
2425         my @url_list = git_get_project_url_list($project);
2426         @url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
2427         foreach my $git_url (@url_list) {
2428                 next unless $git_url;
2429                 print "<tr><td>$url_tag</td><td>$git_url</td></tr>\n";
2430                 $url_tag = "";
2431         }
2432         print "</table>\n";
2433
2434         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=17",
2435                 git_get_head_hash($project)
2436                 or die_error(undef, "Open git-rev-list failed");
2437         my @revlist = map { chomp; $_ } <$fd>;
2438         close $fd;
2439         git_print_header_div('shortlog');
2440         git_shortlog_body(\@revlist, 0, 15, $refs,
2441                           $cgi->a({-href => href(action=>"shortlog")}, "..."));
2442
2443         if (@taglist) {
2444                 git_print_header_div('tags');
2445                 git_tags_body(\@taglist, 0, 15,
2446                               $cgi->a({-href => href(action=>"tags")}, "..."));
2447         }
2448
2449         if (@headlist) {
2450                 git_print_header_div('heads');
2451                 git_heads_body(\@headlist, $head, 0, 15,
2452                                $cgi->a({-href => href(action=>"heads")}, "..."));
2453         }
2454
2455         git_footer_html();
2456 }
2457
2458 sub git_tag {
2459         my $head = git_get_head_hash($project);
2460         git_header_html();
2461         git_print_page_nav('','', $head,undef,$head);
2462         my %tag = parse_tag($hash);
2463         git_print_header_div('commit', esc_html($tag{'name'}), $hash);
2464         print "<div class=\"title_text\">\n" .
2465               "<table cellspacing=\"0\">\n" .
2466               "<tr>\n" .
2467               "<td>object</td>\n" .
2468               "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2469                                $tag{'object'}) . "</td>\n" .
2470               "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
2471                                               $tag{'type'}) . "</td>\n" .
2472               "</tr>\n";
2473         if (defined($tag{'author'})) {
2474                 my %ad = parse_date($tag{'epoch'}, $tag{'tz'});
2475                 print "<tr><td>author</td><td>" . esc_html($tag{'author'}) . "</td></tr>\n";
2476                 print "<tr><td></td><td>" . $ad{'rfc2822'} .
2477                         sprintf(" (%02d:%02d %s)", $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'}) .
2478                         "</td></tr>\n";
2479         }
2480         print "</table>\n\n" .
2481               "</div>\n";
2482         print "<div class=\"page_body\">";
2483         my $comment = $tag{'comment'};
2484         foreach my $line (@$comment) {
2485                 print esc_html($line) . "<br/>\n";
2486         }
2487         print "</div>\n";
2488         git_footer_html();
2489 }
2490
2491 sub git_blame2 {
2492         my $fd;
2493         my $ftype;
2494
2495         my ($have_blame) = gitweb_check_feature('blame');
2496         if (!$have_blame) {
2497                 die_error('403 Permission denied', "Permission denied");
2498         }
2499         die_error('404 Not Found', "File name not defined") if (!$file_name);
2500         $hash_base ||= git_get_head_hash($project);
2501         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2502         my %co = parse_commit($hash_base)
2503                 or die_error(undef, "Reading commit failed");
2504         if (!defined $hash) {
2505                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2506                         or die_error(undef, "Error looking up file");
2507         }
2508         $ftype = git_get_type($hash);
2509         if ($ftype !~ "blob") {
2510                 die_error("400 Bad Request", "Object is not a blob");
2511         }
2512         open ($fd, "-|", git_cmd(), "blame", '-l', '--', $file_name, $hash_base)
2513                 or die_error(undef, "Open git-blame failed");
2514         git_header_html();
2515         my $formats_nav =
2516                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2517                         "blob") .
2518                 " | " .
2519                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2520                         "history") .
2521                 " | " .
2522                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2523                         "HEAD");
2524         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2525         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2526         git_print_page_path($file_name, $ftype, $hash_base);
2527         my @rev_color = (qw(light2 dark2));
2528         my $num_colors = scalar(@rev_color);
2529         my $current_color = 0;
2530         my $last_rev;
2531         print <<HTML;
2532 <div class="page_body">
2533 <table class="blame">
2534 <tr><th>Commit</th><th>Line</th><th>Data</th></tr>
2535 HTML
2536         while (<$fd>) {
2537                 my ($full_rev, $author, $date, $lineno, $data) =
2538                         /^([0-9a-f]{40}).*?\s\((.*?)\s+([-\d]+ [:\d]+ [-+\d]+)\s+(\d+)\)\s(.*)/;
2539                 my $rev = substr($full_rev, 0, 8);
2540                 my $print_c8 = 0;
2541
2542                 if (!defined $last_rev) {
2543                         $last_rev = $full_rev;
2544                         $print_c8 = 1;
2545                 } elsif ($last_rev ne $full_rev) {
2546                         $last_rev = $full_rev;
2547                         $current_color = ++$current_color % $num_colors;
2548                         $print_c8 = 1;
2549                 }
2550                 print "<tr class=\"$rev_color[$current_color]\">\n";
2551                 print "<td class=\"sha1\"";
2552                 if ($print_c8 == 1) {
2553                         print " title=\"$author, $date\"";
2554                 }
2555                 print ">";
2556                 if ($print_c8 == 1) {
2557                         print $cgi->a({-href => href(action=>"commit", hash=>$full_rev, file_name=>$file_name)},
2558                                       esc_html($rev));
2559                 }
2560                 print "</td>\n";
2561                 print "<td class=\"linenr\"><a id=\"l$lineno\" href=\"#l$lineno\" class=\"linenr\">" .
2562                       esc_html($lineno) . "</a></td>\n";
2563                 print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
2564                 print "</tr>\n";
2565         }
2566         print "</table>\n";
2567         print "</div>";
2568         close $fd
2569                 or print "Reading blob failed\n";
2570         git_footer_html();
2571 }
2572
2573 sub git_blame {
2574         my $fd;
2575
2576         my ($have_blame) = gitweb_check_feature('blame');
2577         if (!$have_blame) {
2578                 die_error('403 Permission denied', "Permission denied");
2579         }
2580         die_error('404 Not Found', "File name not defined") if (!$file_name);
2581         $hash_base ||= git_get_head_hash($project);
2582         die_error(undef, "Couldn't find base commit") unless ($hash_base);
2583         my %co = parse_commit($hash_base)
2584                 or die_error(undef, "Reading commit failed");
2585         if (!defined $hash) {
2586                 $hash = git_get_hash_by_path($hash_base, $file_name, "blob")
2587                         or die_error(undef, "Error lookup file");
2588         }
2589         open ($fd, "-|", git_cmd(), "annotate", '-l', '-t', '-r', $file_name, $hash_base)
2590                 or die_error(undef, "Open git-annotate failed");
2591         git_header_html();
2592         my $formats_nav =
2593                 $cgi->a({-href => href(action=>"blob", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2594                         "blob") .
2595                 " | " .
2596                 $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base, file_name=>$file_name)},
2597                         "history") .
2598                 " | " .
2599                 $cgi->a({-href => href(action=>"blame", file_name=>$file_name)},
2600                         "HEAD");
2601         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2602         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2603         git_print_page_path($file_name, 'blob', $hash_base);
2604         print "<div class=\"page_body\">\n";
2605         print <<HTML;
2606 <table class="blame">
2607   <tr>
2608     <th>Commit</th>
2609     <th>Age</th>
2610     <th>Author</th>
2611     <th>Line</th>
2612     <th>Data</th>
2613   </tr>
2614 HTML
2615         my @line_class = (qw(light dark));
2616         my $line_class_len = scalar (@line_class);
2617         my $line_class_num = $#line_class;
2618         while (my $line = <$fd>) {
2619                 my $long_rev;
2620                 my $short_rev;
2621                 my $author;
2622                 my $time;
2623                 my $lineno;
2624                 my $data;
2625                 my $age;
2626                 my $age_str;
2627                 my $age_class;
2628
2629                 chomp $line;
2630                 $line_class_num = ($line_class_num + 1) % $line_class_len;
2631
2632                 if ($line =~ m/^([0-9a-fA-F]{40})\t\(\s*([^\t]+)\t(\d+) [+-]\d\d\d\d\t(\d+)\)(.*)$/) {
2633                         $long_rev = $1;
2634                         $author   = $2;
2635                         $time     = $3;
2636                         $lineno   = $4;
2637                         $data     = $5;
2638                 } else {
2639                         print qq(  <tr><td colspan="5" class="error">Unable to parse: $line</td></tr>\n);
2640                         next;
2641                 }
2642                 $short_rev  = substr ($long_rev, 0, 8);
2643                 $age        = time () - $time;
2644                 $age_str    = age_string ($age);
2645                 $age_str    =~ s/ /&nbsp;/g;
2646                 $age_class  = age_class($age);
2647                 $author     = esc_html ($author);
2648                 $author     =~ s/ /&nbsp;/g;
2649
2650                 $data = untabify($data);
2651                 $data = esc_html ($data);
2652
2653                 print <<HTML;
2654   <tr class="$line_class[$line_class_num]">
2655     <td class="sha1"><a href="${\href (action=>"commit", hash=>$long_rev)}" class="text">$short_rev..</a></td>
2656     <td class="$age_class">$age_str</td>
2657     <td>$author</td>
2658     <td class="linenr"><a id="$lineno" href="#$lineno" class="linenr">$lineno</a></td>
2659     <td class="pre">$data</td>
2660   </tr>
2661 HTML
2662         } # while (my $line = <$fd>)
2663         print "</table>\n\n";
2664         close $fd
2665                 or print "Reading blob failed.\n";
2666         print "</div>";
2667         git_footer_html();
2668 }
2669
2670 sub git_tags {
2671         my $head = git_get_head_hash($project);
2672         git_header_html();
2673         git_print_page_nav('','', $head,undef,$head);
2674         git_print_header_div('summary', $project);
2675
2676         my ($taglist) = git_get_refs_list("tags");
2677         if (@$taglist) {
2678                 git_tags_body($taglist);
2679         }
2680         git_footer_html();
2681 }
2682
2683 sub git_heads {
2684         my $head = git_get_head_hash($project);
2685         git_header_html();
2686         git_print_page_nav('','', $head,undef,$head);
2687         git_print_header_div('summary', $project);
2688
2689         my ($headlist) = git_get_refs_list("heads");
2690         if (@$headlist) {
2691                 git_heads_body($headlist, $head);
2692         }
2693         git_footer_html();
2694 }
2695
2696 sub git_blob_plain {
2697         my $expires;
2698
2699         if (!defined $hash) {
2700                 if (defined $file_name) {
2701                         my $base = $hash_base || git_get_head_hash($project);
2702                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2703                                 or die_error(undef, "Error lookup file");
2704                 } else {
2705                         die_error(undef, "No file name defined");
2706                 }
2707         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2708                 # blobs defined by non-textual hash id's can be cached
2709                 $expires = "+1d";
2710         }
2711
2712         my $type = shift;
2713         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2714                 or die_error(undef, "Couldn't cat $file_name, $hash");
2715
2716         $type ||= blob_mimetype($fd, $file_name);
2717
2718         # save as filename, even when no $file_name is given
2719         my $save_as = "$hash";
2720         if (defined $file_name) {
2721                 $save_as = $file_name;
2722         } elsif ($type =~ m/^text\//) {
2723                 $save_as .= '.txt';
2724         }
2725
2726         print $cgi->header(
2727                 -type => "$type",
2728                 -expires=>$expires,
2729                 -content_disposition => 'inline; filename="' . "$save_as" . '"');
2730         undef $/;
2731         binmode STDOUT, ':raw';
2732         print <$fd>;
2733         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2734         $/ = "\n";
2735         close $fd;
2736 }
2737
2738 sub git_blob {
2739         my $expires;
2740
2741         if (!defined $hash) {
2742                 if (defined $file_name) {
2743                         my $base = $hash_base || git_get_head_hash($project);
2744                         $hash = git_get_hash_by_path($base, $file_name, "blob")
2745                                 or die_error(undef, "Error lookup file");
2746                 } else {
2747                         die_error(undef, "No file name defined");
2748                 }
2749         } elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2750                 # blobs defined by non-textual hash id's can be cached
2751                 $expires = "+1d";
2752         }
2753
2754         my ($have_blame) = gitweb_check_feature('blame');
2755         open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
2756                 or die_error(undef, "Couldn't cat $file_name, $hash");
2757         my $mimetype = blob_mimetype($fd, $file_name);
2758         if ($mimetype !~ m/^text\//) {
2759                 close $fd;
2760                 return git_blob_plain($mimetype);
2761         }
2762         git_header_html(undef, $expires);
2763         my $formats_nav = '';
2764         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2765                 if (defined $file_name) {
2766                         if ($have_blame) {
2767                                 $formats_nav .=
2768                                         $cgi->a({-href => href(action=>"blame", hash_base=>$hash_base,
2769                                                                hash=>$hash, file_name=>$file_name)},
2770                                                 "blame") .
2771                                         " | ";
2772                         }
2773                         $formats_nav .=
2774                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2775                                                        hash=>$hash, file_name=>$file_name)},
2776                                         "history") .
2777                                 " | " .
2778                                 $cgi->a({-href => href(action=>"blob_plain",
2779                                                        hash=>$hash, file_name=>$file_name)},
2780                                         "raw") .
2781                                 " | " .
2782                                 $cgi->a({-href => href(action=>"blob",
2783                                                        hash_base=>"HEAD", file_name=>$file_name)},
2784                                         "HEAD");
2785                 } else {
2786                         $formats_nav .=
2787                                 $cgi->a({-href => href(action=>"blob_plain", hash=>$hash)}, "raw");
2788                 }
2789                 git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
2790                 git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
2791         } else {
2792                 print "<div class=\"page_nav\">\n" .
2793                       "<br/><br/></div>\n" .
2794                       "<div class=\"title\">$hash</div>\n";
2795         }
2796         git_print_page_path($file_name, "blob", $hash_base);
2797         print "<div class=\"page_body\">\n";
2798         my $nr;
2799         while (my $line = <$fd>) {
2800                 chomp $line;
2801                 $nr++;
2802                 $line = untabify($line);
2803                 printf "<div class=\"pre\"><a id=\"l%i\" href=\"#l%i\" class=\"linenr\">%4i</a> %s</div>\n",
2804                        $nr, $nr, $nr, esc_html($line);
2805         }
2806         close $fd
2807                 or print "Reading blob failed.\n";
2808         print "</div>";
2809         git_footer_html();
2810 }
2811
2812 sub git_tree {
2813         my $have_snapshot = gitweb_have_snapshot();
2814
2815         if (!defined $hash_base) {
2816                 $hash_base = "HEAD";
2817         }
2818         if (!defined $hash) {
2819                 if (defined $file_name) {
2820                         $hash = git_get_hash_by_path($hash_base, $file_name, "tree");
2821                 } else {
2822                         $hash = $hash_base;
2823                 }
2824         }
2825         $/ = "\0";
2826         open my $fd, "-|", git_cmd(), "ls-tree", '-z', $hash
2827                 or die_error(undef, "Open git-ls-tree failed");
2828         my @entries = map { chomp; $_ } <$fd>;
2829         close $fd or die_error(undef, "Reading tree failed");
2830         $/ = "\n";
2831
2832         my $refs = git_get_references();
2833         my $ref = format_ref_marker($refs, $hash_base);
2834         git_header_html();
2835         my $base = "";
2836         my ($have_blame) = gitweb_check_feature('blame');
2837         if (defined $hash_base && (my %co = parse_commit($hash_base))) {
2838                 my @views_nav = ();
2839                 if (defined $file_name) {
2840                         push @views_nav,
2841                                 $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
2842                                                        hash=>$hash, file_name=>$file_name)},
2843                                         "history"),
2844                                 $cgi->a({-href => href(action=>"tree",
2845                                                        hash_base=>"HEAD", file_name=>$file_name)},
2846                                         "HEAD"),
2847                 }
2848                 if ($have_snapshot) {
2849                         # FIXME: Should be available when we have no hash base as well.
2850                         push @views_nav,
2851                                 $cgi->a({-href => href(action=>"snapshot", hash=>$hash)},
2852                                         "snapshot");
2853                 }
2854                 git_print_page_nav('tree','', $hash_base, undef, undef, join(' | ', @views_nav));
2855                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
2856         } else {
2857                 undef $hash_base;
2858                 print "<div class=\"page_nav\">\n";
2859                 print "<br/><br/></div>\n";
2860                 print "<div class=\"title\">$hash</div>\n";
2861         }
2862         if (defined $file_name) {
2863                 $base = esc_html("$file_name/");
2864         }
2865         git_print_page_path($file_name, 'tree', $hash_base);
2866         print "<div class=\"page_body\">\n";
2867         print "<table cellspacing=\"0\">\n";
2868         my $alternate = 1;
2869         foreach my $line (@entries) {
2870                 my %t = parse_ls_tree_line($line, -z => 1);
2871
2872                 if ($alternate) {
2873                         print "<tr class=\"dark\">\n";
2874                 } else {
2875                         print "<tr class=\"light\">\n";
2876                 }
2877                 $alternate ^= 1;
2878
2879                 git_print_tree_entry(\%t, $base, $hash_base, $have_blame);
2880
2881                 print "</tr>\n";
2882         }
2883         print "</table>\n" .
2884               "</div>";
2885         git_footer_html();
2886 }
2887
2888 sub git_snapshot {
2889         my ($ctype, $suffix, $command) = gitweb_check_feature('snapshot');
2890         my $have_snapshot = (defined $ctype && defined $suffix);
2891         if (!$have_snapshot) {
2892                 die_error('403 Permission denied', "Permission denied");
2893         }
2894
2895         if (!defined $hash) {
2896                 $hash = git_get_head_hash($project);
2897         }
2898
2899         my $filename = basename($project) . "-$hash.tar.$suffix";
2900
2901         print $cgi->header(
2902                 -type => 'application/x-tar',
2903                 -content_encoding => $ctype,
2904                 -content_disposition => 'inline; filename="' . "$filename" . '"',
2905                 -status => '200 OK');
2906
2907         my $git_command = git_cmd_str();
2908         open my $fd, "-|", "$git_command tar-tree $hash \'$project\' | $command" or
2909                 die_error(undef, "Execute git-tar-tree failed.");
2910         binmode STDOUT, ':raw';
2911         print <$fd>;
2912         binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
2913         close $fd;
2914
2915 }
2916
2917 sub git_log {
2918         my $head = git_get_head_hash($project);
2919         if (!defined $hash) {
2920                 $hash = $head;
2921         }
2922         if (!defined $page) {
2923                 $page = 0;
2924         }
2925         my $refs = git_get_references();
2926
2927         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
2928         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
2929                 or die_error(undef, "Open git-rev-list failed");
2930         my @revlist = map { chomp; $_ } <$fd>;
2931         close $fd;
2932
2933         my $paging_nav = format_paging_nav('log', $hash, $head, $page, $#revlist);
2934
2935         git_header_html();
2936         git_print_page_nav('log','', $hash,undef,undef, $paging_nav);
2937
2938         if (!@revlist) {
2939                 my %co = parse_commit($hash);
2940
2941                 git_print_header_div('summary', $project);
2942                 print "<div class=\"page_body\"> Last change $co{'age_string'}.<br/><br/></div>\n";
2943         }
2944         for (my $i = ($page * 100); $i <= $#revlist; $i++) {
2945                 my $commit = $revlist[$i];
2946                 my $ref = format_ref_marker($refs, $commit);
2947                 my %co = parse_commit($commit);
2948                 next if !%co;
2949                 my %ad = parse_date($co{'author_epoch'});
2950                 git_print_header_div('commit',
2951                                "<span class=\"age\">$co{'age_string'}</span>" .
2952                                esc_html($co{'title'}) . $ref,
2953                                $commit);
2954                 print "<div class=\"title_text\">\n" .
2955                       "<div class=\"log_link\">\n" .
2956                       $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
2957                       " | " .
2958                       $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
2959                       " | " .
2960                       $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
2961                       "<br/>\n" .
2962                       "</div>\n" .
2963                       "<i>" . esc_html($co{'author_name'}) .  " [$ad{'rfc2822'}]</i><br/>\n" .
2964                       "</div>\n";
2965
2966                 print "<div class=\"log_body\">\n";
2967                 git_print_simplified_log($co{'comment'});
2968                 print "</div>\n";
2969         }
2970         git_footer_html();
2971 }
2972
2973 sub git_commit {
2974         my %co = parse_commit($hash);
2975         if (!%co) {
2976                 die_error(undef, "Unknown commit object");
2977         }
2978         my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
2979         my %cd = parse_date($co{'committer_epoch'}, $co{'committer_tz'});
2980
2981         my $parent = $co{'parent'};
2982         if (!defined $parent) {
2983                 $parent = "--root";
2984         }
2985         open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $parent, $hash
2986                 or die_error(undef, "Open git-diff-tree failed");
2987         my @difftree = map { chomp; $_ } <$fd>;
2988         close $fd or die_error(undef, "Reading git-diff-tree failed");
2989
2990         # non-textual hash id's can be cached
2991         my $expires;
2992         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
2993                 $expires = "+1d";
2994         }
2995         my $refs = git_get_references();
2996         my $ref = format_ref_marker($refs, $co{'id'});
2997
2998         my $have_snapshot = gitweb_have_snapshot();
2999
3000         my @views_nav = ();
3001         if (defined $file_name && defined $co{'parent'}) {
3002                 push @views_nav,
3003                         $cgi->a({-href => href(action=>"blame", hash_parent=>$parent, file_name=>$file_name)},
3004                                 "blame");
3005         }
3006         if (defined $co{'parent'}) {
3007                 push @views_nav,
3008                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash)}, "shortlog"),
3009                         $cgi->a({-href => href(action=>"log", hash=>$hash)}, "log");
3010         }
3011         git_header_html(undef, $expires);
3012         git_print_page_nav('commit', defined $co{'parent'} ? '' : 'commitdiff',
3013                            $hash, $co{'tree'}, $hash,
3014                            join (' | ', @views_nav));
3015
3016         if (defined $co{'parent'}) {
3017                 git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
3018         } else {
3019                 git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
3020         }
3021         print "<div class=\"title_text\">\n" .
3022               "<table cellspacing=\"0\">\n";
3023         print "<tr><td>author</td><td>" . esc_html($co{'author'}) . "</td></tr>\n".
3024               "<tr>" .
3025               "<td></td><td> $ad{'rfc2822'}";
3026         if ($ad{'hour_local'} < 6) {
3027                 printf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
3028                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3029         } else {
3030                 printf(" (%02d:%02d %s)",
3031                        $ad{'hour_local'}, $ad{'minute_local'}, $ad{'tz_local'});
3032         }
3033         print "</td>" .
3034               "</tr>\n";
3035         print "<tr><td>committer</td><td>" . esc_html($co{'committer'}) . "</td></tr>\n";
3036         print "<tr><td></td><td> $cd{'rfc2822'}" .
3037               sprintf(" (%02d:%02d %s)", $cd{'hour_local'}, $cd{'minute_local'}, $cd{'tz_local'}) .
3038               "</td></tr>\n";
3039         print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
3040         print "<tr>" .
3041               "<td>tree</td>" .
3042               "<td class=\"sha1\">" .
3043               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
3044                        class => "list"}, $co{'tree'}) .
3045               "</td>" .
3046               "<td class=\"link\">" .
3047               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
3048                       "tree");
3049         if ($have_snapshot) {
3050                 print " | " .
3051                       $cgi->a({-href => href(action=>"snapshot", hash=>$hash)}, "snapshot");
3052         }
3053         print "</td>" .
3054               "</tr>\n";
3055         my $parents = $co{'parents'};
3056         foreach my $par (@$parents) {
3057                 print "<tr>" .
3058                       "<td>parent</td>" .
3059                       "<td class=\"sha1\">" .
3060                       $cgi->a({-href => href(action=>"commit", hash=>$par),
3061                                class => "list"}, $par) .
3062                       "</td>" .
3063                       "<td class=\"link\">" .
3064                       $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
3065                       " | " .
3066                       $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
3067                       "</td>" .
3068                       "</tr>\n";
3069         }
3070         print "</table>".
3071               "</div>\n";
3072
3073         print "<div class=\"page_body\">\n";
3074         git_print_log($co{'comment'});
3075         print "</div>\n";
3076
3077         git_difftree_body(\@difftree, $hash, $parent);
3078
3079         git_footer_html();
3080 }
3081
3082 sub git_blobdiff {
3083         my $format = shift || 'html';
3084
3085         my $fd;
3086         my @difftree;
3087         my %diffinfo;
3088         my $expires;
3089
3090         # preparing $fd and %diffinfo for git_patchset_body
3091         # new style URI
3092         if (defined $hash_base && defined $hash_parent_base) {
3093                 if (defined $file_name) {
3094                         # read raw output
3095                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base,
3096                                 "--", $file_name
3097                                 or die_error(undef, "Open git-diff-tree failed");
3098                         @difftree = map { chomp; $_ } <$fd>;
3099                         close $fd
3100                                 or die_error(undef, "Reading git-diff-tree failed");
3101                         @difftree
3102                                 or die_error('404 Not Found', "Blob diff not found");
3103
3104                 } elsif (defined $hash &&
3105                          $hash =~ /[0-9a-fA-F]{40}/) {
3106                         # try to find filename from $hash
3107
3108                         # read filtered raw output
3109                         open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts, $hash_parent_base, $hash_base
3110                                 or die_error(undef, "Open git-diff-tree failed");
3111                         @difftree =
3112                                 # ':100644 100644 03b21826... 3b93d5e7... M     ls-files.c'
3113                                 # $hash == to_id
3114                                 grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
3115                                 map { chomp; $_ } <$fd>;
3116                         close $fd
3117                                 or die_error(undef, "Reading git-diff-tree failed");
3118                         @difftree
3119                                 or die_error('404 Not Found', "Blob diff not found");
3120
3121                 } else {
3122                         die_error('404 Not Found', "Missing one of the blob diff parameters");
3123                 }
3124
3125                 if (@difftree > 1) {
3126                         die_error('404 Not Found', "Ambiguous blob diff specification");
3127                 }
3128
3129                 %diffinfo = parse_difftree_raw_line($difftree[0]);
3130                 $file_parent ||= $diffinfo{'from_file'} || $file_name || $diffinfo{'file'};
3131                 $file_name   ||= $diffinfo{'to_file'}   || $diffinfo{'file'};
3132
3133                 $hash_parent ||= $diffinfo{'from_id'};
3134                 $hash        ||= $diffinfo{'to_id'};
3135
3136                 # non-textual hash id's can be cached
3137                 if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
3138                     $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
3139                         $expires = '+1d';
3140                 }
3141
3142                 # open patch output
3143                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3144                         '-p', $hash_parent_base, $hash_base,
3145                         "--", $file_name
3146                         or die_error(undef, "Open git-diff-tree failed");
3147         }
3148
3149         # old/legacy style URI
3150         if (!%diffinfo && # if new style URI failed
3151             defined $hash && defined $hash_parent) {
3152                 # fake git-diff-tree raw output
3153                 $diffinfo{'from_mode'} = $diffinfo{'to_mode'} = "blob";
3154                 $diffinfo{'from_id'} = $hash_parent;
3155                 $diffinfo{'to_id'}   = $hash;
3156                 if (defined $file_name) {
3157                         if (defined $file_parent) {
3158                                 $diffinfo{'status'} = '2';
3159                                 $diffinfo{'from_file'} = $file_parent;
3160                                 $diffinfo{'to_file'}   = $file_name;
3161                         } else { # assume not renamed
3162                                 $diffinfo{'status'} = '1';
3163                                 $diffinfo{'from_file'} = $file_name;
3164                                 $diffinfo{'to_file'}   = $file_name;
3165                         }
3166                 } else { # no filename given
3167                         $diffinfo{'status'} = '2';
3168                         $diffinfo{'from_file'} = $hash_parent;
3169                         $diffinfo{'to_file'}   = $hash;
3170                 }
3171
3172                 # non-textual hash id's can be cached
3173                 if ($hash =~ m/^[0-9a-fA-F]{40}$/ &&
3174                     $hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
3175                         $expires = '+1d';
3176                 }
3177
3178                 # open patch output
3179                 open $fd, "-|", git_cmd(), "diff", '-p', @diff_opts, $hash_parent, $hash
3180                         or die_error(undef, "Open git-diff failed");
3181         } else  {
3182                 die_error('404 Not Found', "Missing one of the blob diff parameters")
3183                         unless %diffinfo;
3184         }
3185
3186         # header
3187         if ($format eq 'html') {
3188                 my $formats_nav =
3189                         $cgi->a({-href => href(action=>"blobdiff_plain",
3190                                                hash=>$hash, hash_parent=>$hash_parent,
3191                                                hash_base=>$hash_base, hash_parent_base=>$hash_parent_base,
3192                                                file_name=>$file_name, file_parent=>$file_parent)},
3193                                 "raw");
3194                 git_header_html(undef, $expires);
3195                 if (defined $hash_base && (my %co = parse_commit($hash_base))) {
3196                         git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
3197                         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3198                 } else {
3199                         print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
3200                         print "<div class=\"title\">$hash vs $hash_parent</div>\n";
3201                 }
3202                 if (defined $file_name) {
3203                         git_print_page_path($file_name, "blob", $hash_base);
3204                 } else {
3205                         print "<div class=\"page_path\"></div>\n";
3206                 }
3207
3208         } elsif ($format eq 'plain') {
3209                 print $cgi->header(
3210                         -type => 'text/plain',
3211                         -charset => 'utf-8',
3212                         -expires => $expires,
3213                         -content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
3214
3215                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3216
3217         } else {
3218                 die_error(undef, "Unknown blobdiff format");
3219         }
3220
3221         # patch
3222         if ($format eq 'html') {
3223                 print "<div class=\"page_body\">\n";
3224
3225                 git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
3226                 close $fd;
3227
3228                 print "</div>\n"; # class="page_body"
3229                 git_footer_html();
3230
3231         } else {
3232                 while (my $line = <$fd>) {
3233                         $line =~ s!a/($hash|$hash_parent)!'a/'.esc_html($diffinfo{'from_file'})!eg;
3234                         $line =~ s!b/($hash|$hash_parent)!'b/'.esc_html($diffinfo{'to_file'})!eg;
3235
3236                         print $line;
3237
3238                         last if $line =~ m!^\+\+\+!;
3239                 }
3240                 local $/ = undef;
3241                 print <$fd>;
3242                 close $fd;
3243         }
3244 }
3245
3246 sub git_blobdiff_plain {
3247         git_blobdiff('plain');
3248 }
3249
3250 sub git_commitdiff {
3251         my $format = shift || 'html';
3252         my %co = parse_commit($hash);
3253         if (!%co) {
3254                 die_error(undef, "Unknown commit object");
3255         }
3256         if (!defined $hash_parent) {
3257                 $hash_parent = $co{'parent'} || '--root';
3258         }
3259
3260         # read commitdiff
3261         my $fd;
3262         my @difftree;
3263         if ($format eq 'html') {
3264                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3265                         "--patch-with-raw", "--full-index", $hash_parent, $hash
3266                         or die_error(undef, "Open git-diff-tree failed");
3267
3268                 while (chomp(my $line = <$fd>)) {
3269                         # empty line ends raw part of diff-tree output
3270                         last unless $line;
3271                         push @difftree, $line;
3272                 }
3273
3274         } elsif ($format eq 'plain') {
3275                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3276                         '-p', $hash_parent, $hash
3277                         or die_error(undef, "Open git-diff-tree failed");
3278
3279         } else {
3280                 die_error(undef, "Unknown commitdiff format");
3281         }
3282
3283         # non-textual hash id's can be cached
3284         my $expires;
3285         if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
3286                 $expires = "+1d";
3287         }
3288
3289         # write commit message
3290         if ($format eq 'html') {
3291                 my $refs = git_get_references();
3292                 my $ref = format_ref_marker($refs, $co{'id'});
3293                 my $formats_nav =
3294                         $cgi->a({-href => href(action=>"commitdiff_plain",
3295                                                hash=>$hash, hash_parent=>$hash_parent)},
3296                                 "raw");
3297
3298                 git_header_html(undef, $expires);
3299                 git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
3300                 git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
3301                 git_print_authorship(\%co);
3302                 print "<div class=\"page_body\">\n";
3303                 print "<div class=\"log\">\n";
3304                 git_print_simplified_log($co{'comment'}, 1); # skip title
3305                 print "</div>\n"; # class="log"
3306
3307         } elsif ($format eq 'plain') {
3308                 my $refs = git_get_references("tags");
3309                 my $tagname = git_get_rev_name_tags($hash);
3310                 my $filename = basename($project) . "-$hash.patch";
3311
3312                 print $cgi->header(
3313                         -type => 'text/plain',
3314                         -charset => 'utf-8',
3315                         -expires => $expires,
3316                         -content_disposition => 'inline; filename="' . "$filename" . '"');
3317                 my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
3318                 print <<TEXT;
3319 From: $co{'author'}
3320 Date: $ad{'rfc2822'} ($ad{'tz_local'})
3321 Subject: $co{'title'}
3322 TEXT
3323                 print "X-Git-Tag: $tagname\n" if $tagname;
3324                 print "X-Git-Url: " . $cgi->self_url() . "\n\n";
3325
3326                 foreach my $line (@{$co{'comment'}}) {
3327                         print "$line\n";
3328                 }
3329                 print "---\n\n";
3330         }
3331
3332         # write patch
3333         if ($format eq 'html') {
3334                 git_difftree_body(\@difftree, $hash, $hash_parent);
3335                 print "<br/>\n";
3336
3337                 git_patchset_body($fd, \@difftree, $hash, $hash_parent);
3338                 close $fd;
3339                 print "</div>\n"; # class="page_body"
3340                 git_footer_html();
3341
3342         } elsif ($format eq 'plain') {
3343                 local $/ = undef;
3344                 print <$fd>;
3345                 close $fd
3346                         or print "Reading git-diff-tree failed\n";
3347         }
3348 }
3349
3350 sub git_commitdiff_plain {
3351         git_commitdiff('plain');
3352 }
3353
3354 sub git_history {
3355         if (!defined $hash_base) {
3356                 $hash_base = git_get_head_hash($project);
3357         }
3358         if (!defined $page) {
3359                 $page = 0;
3360         }
3361         my $ftype;
3362         my %co = parse_commit($hash_base);
3363         if (!%co) {
3364                 die_error(undef, "Unknown commit object");
3365         }
3366
3367         my $refs = git_get_references();
3368         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3369
3370         if (!defined $hash && defined $file_name) {
3371                 $hash = git_get_hash_by_path($hash_base, $file_name);
3372         }
3373         if (defined $hash) {
3374                 $ftype = git_get_type($hash);
3375         }
3376
3377         open my $fd, "-|",
3378                 git_cmd(), "rev-list", $limit, "--full-history", $hash_base, "--", $file_name
3379                         or die_error(undef, "Open git-rev-list-failed");
3380         my @revlist = map { chomp; $_ } <$fd>;
3381         close $fd
3382                 or die_error(undef, "Reading git-rev-list failed");
3383
3384         my $paging_nav = '';
3385         if ($page > 0) {
3386                 $paging_nav .=
3387                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3388                                                file_name=>$file_name)},
3389                                 "first");
3390                 $paging_nav .= " &sdot; " .
3391                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3392                                                file_name=>$file_name, page=>$page-1),
3393                                  -accesskey => "p", -title => "Alt-p"}, "prev");
3394         } else {
3395                 $paging_nav .= "first";
3396                 $paging_nav .= " &sdot; prev";
3397         }
3398         if ($#revlist >= (100 * ($page+1)-1)) {
3399                 $paging_nav .= " &sdot; " .
3400                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3401                                                file_name=>$file_name, page=>$page+1),
3402                                  -accesskey => "n", -title => "Alt-n"}, "next");
3403         } else {
3404                 $paging_nav .= " &sdot; next";
3405         }
3406         my $next_link = '';
3407         if ($#revlist >= (100 * ($page+1)-1)) {
3408                 $next_link =
3409                         $cgi->a({-href => href(action=>"history", hash=>$hash, hash_base=>$hash_base,
3410                                                file_name=>$file_name, page=>$page+1),
3411                                  -title => "Alt-n"}, "next");
3412         }
3413
3414         git_header_html();
3415         git_print_page_nav('history','', $hash_base,$co{'tree'},$hash_base, $paging_nav);
3416         git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
3417         git_print_page_path($file_name, $ftype, $hash_base);
3418
3419         git_history_body(\@revlist, ($page * 100), $#revlist,
3420                          $refs, $hash_base, $ftype, $next_link);
3421
3422         git_footer_html();
3423 }
3424
3425 sub git_search {
3426         if (!defined $searchtext) {
3427                 die_error(undef, "Text field empty");
3428         }
3429         if (!defined $hash) {
3430                 $hash = git_get_head_hash($project);
3431         }
3432         my %co = parse_commit($hash);
3433         if (!%co) {
3434                 die_error(undef, "Unknown commit object");
3435         }
3436
3437         my $commit_search = 1;
3438         my $author_search = 0;
3439         my $committer_search = 0;
3440         my $pickaxe_search = 0;
3441         if ($searchtext =~ s/^author\\://i) {
3442                 $author_search = 1;
3443         } elsif ($searchtext =~ s/^committer\\://i) {
3444                 $committer_search = 1;
3445         } elsif ($searchtext =~ s/^pickaxe\\://i) {
3446                 $commit_search = 0;
3447                 $pickaxe_search = 1;
3448
3449                 # pickaxe may take all resources of your box and run for several minutes
3450                 # with every query - so decide by yourself how public you make this feature
3451                 my ($have_pickaxe) = gitweb_check_feature('pickaxe');
3452                 if (!$have_pickaxe) {
3453                         die_error('403 Permission denied', "Permission denied");
3454                 }
3455         }
3456         git_header_html();
3457         git_print_page_nav('','', $hash,$co{'tree'},$hash);
3458         git_print_header_div('commit', esc_html($co{'title'}), $hash);
3459
3460         print "<table cellspacing=\"0\">\n";
3461         my $alternate = 1;
3462         if ($commit_search) {
3463                 $/ = "\0";
3464                 open my $fd, "-|", git_cmd(), "rev-list", "--header", "--parents", $hash or next;
3465                 while (my $commit_text = <$fd>) {
3466                         if (!grep m/$searchtext/i, $commit_text) {
3467                                 next;
3468                         }
3469                         if ($author_search && !grep m/\nauthor .*$searchtext/i, $commit_text) {
3470                                 next;
3471                         }
3472                         if ($committer_search && !grep m/\ncommitter .*$searchtext/i, $commit_text) {
3473                                 next;
3474                         }
3475                         my @commit_lines = split "\n", $commit_text;
3476                         my %co = parse_commit(undef, \@commit_lines);
3477                         if (!%co) {
3478                                 next;
3479                         }
3480                         if ($alternate) {
3481                                 print "<tr class=\"dark\">\n";
3482                         } else {
3483                                 print "<tr class=\"light\">\n";
3484                         }
3485                         $alternate ^= 1;
3486                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3487                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3488                               "<td>" .
3489                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}), -class => "list subject"},
3490                                        esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3491                         my $comment = $co{'comment'};
3492                         foreach my $line (@$comment) {
3493                                 if ($line =~ m/^(.*)($searchtext)(.*)$/i) {
3494                                         my $lead = esc_html($1) || "";
3495                                         $lead = chop_str($lead, 30, 10);
3496                                         my $match = esc_html($2) || "";
3497                                         my $trail = esc_html($3) || "";
3498                                         $trail = chop_str($trail, 30, 10);
3499                                         my $text = "$lead<span class=\"match\">$match</span>$trail";
3500                                         print chop_str($text, 80, 5) . "<br/>\n";
3501                                 }
3502                         }
3503                         print "</td>\n" .
3504                               "<td class=\"link\">" .
3505                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3506                               " | " .
3507                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3508                         print "</td>\n" .
3509                               "</tr>\n";
3510                 }
3511                 close $fd;
3512         }
3513
3514         if ($pickaxe_search) {
3515                 $/ = "\n";
3516                 my $git_command = git_cmd_str();
3517                 open my $fd, "-|", "$git_command rev-list $hash | " .
3518                         "$git_command diff-tree -r --stdin -S\'$searchtext\'";
3519                 undef %co;
3520                 my @files;
3521                 while (my $line = <$fd>) {
3522                         if (%co && $line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)\t(.*)$/) {
3523                                 my %set;
3524                                 $set{'file'} = $6;
3525                                 $set{'from_id'} = $3;
3526                                 $set{'to_id'} = $4;
3527                                 $set{'id'} = $set{'to_id'};
3528                                 if ($set{'id'} =~ m/0{40}/) {
3529                                         $set{'id'} = $set{'from_id'};
3530                                 }
3531                                 if ($set{'id'} =~ m/0{40}/) {
3532                                         next;
3533                                 }
3534                                 push @files, \%set;
3535                         } elsif ($line =~ m/^([0-9a-fA-F]{40})$/){
3536                                 if (%co) {
3537                                         if ($alternate) {
3538                                                 print "<tr class=\"dark\">\n";
3539                                         } else {
3540                                                 print "<tr class=\"light\">\n";
3541                                         }
3542                                         $alternate ^= 1;
3543                                         print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
3544                                               "<td><i>" . esc_html(chop_str($co{'author_name'}, 15, 5)) . "</i></td>\n" .
3545                                               "<td>" .
3546                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
3547                                                       -class => "list subject"},
3548                                                       esc_html(chop_str($co{'title'}, 50)) . "<br/>");
3549                                         while (my $setref = shift @files) {
3550                                                 my %set = %$setref;
3551                                                 print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
3552                                                                              hash=>$set{'id'}, file_name=>$set{'file'}),
3553                                                               -class => "list"},
3554                                                               "<span class=\"match\">" . esc_html($set{'file'}) . "</span>") .
3555                                                       "<br/>\n";
3556                                         }
3557                                         print "</td>\n" .
3558                                               "<td class=\"link\">" .
3559                                               $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
3560                                               " | " .
3561                                               $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
3562                                         print "</td>\n" .
3563                                               "</tr>\n";
3564                                 }
3565                                 %co = parse_commit($1);
3566                         }
3567                 }
3568                 close $fd;
3569         }
3570         print "</table>\n";
3571         git_footer_html();
3572 }
3573
3574 sub git_shortlog {
3575         my $head = git_get_head_hash($project);
3576         if (!defined $hash) {
3577                 $hash = $head;
3578         }
3579         if (!defined $page) {
3580                 $page = 0;
3581         }
3582         my $refs = git_get_references();
3583
3584         my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
3585         open my $fd, "-|", git_cmd(), "rev-list", $limit, $hash
3586                 or die_error(undef, "Open git-rev-list failed");
3587         my @revlist = map { chomp; $_ } <$fd>;
3588         close $fd;
3589
3590         my $paging_nav = format_paging_nav('shortlog', $hash, $head, $page, $#revlist);
3591         my $next_link = '';
3592         if ($#revlist >= (100 * ($page+1)-1)) {
3593                 $next_link =
3594                         $cgi->a({-href => href(action=>"shortlog", hash=>$hash, page=>$page+1),
3595                                  -title => "Alt-n"}, "next");
3596         }
3597
3598
3599         git_header_html();
3600         git_print_page_nav('shortlog','', $hash,$hash,$hash, $paging_nav);
3601         git_print_header_div('summary', $project);
3602
3603         git_shortlog_body(\@revlist, ($page * 100), $#revlist, $refs, $next_link);
3604
3605         git_footer_html();
3606 }
3607
3608 ## ......................................................................
3609 ## feeds (RSS, OPML)
3610
3611 sub git_rss {
3612         # http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
3613         open my $fd, "-|", git_cmd(), "rev-list", "--max-count=150", git_get_head_hash($project)
3614                 or die_error(undef, "Open git-rev-list failed");
3615         my @revlist = map { chomp; $_ } <$fd>;
3616         close $fd or die_error(undef, "Reading git-rev-list failed");
3617         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3618         print <<XML;
3619 <?xml version="1.0" encoding="utf-8"?>
3620 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
3621 <channel>
3622 <title>$project $my_uri $my_url</title>
3623 <link>${\esc_html("$my_url?p=$project;a=summary")}</link>
3624 <description>$project log</description>
3625 <language>en</language>
3626 XML
3627
3628         for (my $i = 0; $i <= $#revlist; $i++) {
3629                 my $commit = $revlist[$i];
3630                 my %co = parse_commit($commit);
3631                 # we read 150, we always show 30 and the ones more recent than 48 hours
3632                 if (($i >= 20) && ((time - $co{'committer_epoch'}) > 48*60*60)) {
3633                         last;
3634                 }
3635                 my %cd = parse_date($co{'committer_epoch'});
3636                 open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
3637                         $co{'parent'}, $co{'id'}
3638                         or next;
3639                 my @difftree = map { chomp; $_ } <$fd>;
3640                 close $fd
3641                         or next;
3642                 print "<item>\n" .
3643                       "<title>" .
3644                       sprintf("%d %s %02d:%02d", $cd{'mday'}, $cd{'month'}, $cd{'hour'}, $cd{'minute'}) . " - " . esc_html($co{'title'}) .
3645                       "</title>\n" .
3646                       "<author>" . esc_html($co{'author'}) . "</author>\n" .
3647                       "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
3648                       "<guid isPermaLink=\"true\">" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</guid>\n" .
3649                       "<link>" . esc_html("$my_url?p=$project;a=commit;h=$commit") . "</link>\n" .
3650                       "<description>" . esc_html($co{'title'}) . "</description>\n" .
3651                       "<content:encoded>" .
3652                       "<![CDATA[\n";
3653                 my $comment = $co{'comment'};
3654                 foreach my $line (@$comment) {
3655                         $line = decode("utf8", $line, Encode::FB_DEFAULT);
3656                         print "$line<br/>\n";
3657                 }
3658                 print "<br/>\n";
3659                 foreach my $line (@difftree) {
3660                         if (!($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/)) {
3661                                 next;
3662                         }
3663                         my $file = esc_html(unquote($7));
3664                         $file = decode("utf8", $file, Encode::FB_DEFAULT);
3665                         print "$file<br/>\n";
3666                 }
3667                 print "]]>\n" .
3668                       "</content:encoded>\n" .
3669                       "</item>\n";
3670         }
3671         print "</channel></rss>";
3672 }
3673
3674 sub git_opml {
3675         my @list = git_get_projects_list();
3676
3677         print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
3678         print <<XML;
3679 <?xml version="1.0" encoding="utf-8"?>
3680 <opml version="1.0">
3681 <head>
3682   <title>$site_name Git OPML Export</title>
3683 </head>
3684 <body>
3685 <outline text="git RSS feeds">
3686 XML
3687
3688         foreach my $pr (@list) {
3689                 my %proj = %$pr;
3690                 my $head = git_get_head_hash($proj{'path'});
3691                 if (!defined $head) {
3692                         next;
3693                 }
3694                 $git_dir = "$projectroot/$proj{'path'}";
3695                 my %co = parse_commit($head);
3696                 if (!%co) {
3697                         next;
3698                 }
3699
3700                 my $path = esc_html(chop_str($proj{'path'}, 25, 5));
3701                 my $rss  = "$my_url?p=$proj{'path'};a=rss";
3702                 my $html = "$my_url?p=$proj{'path'};a=summary";
3703                 print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
3704         }
3705         print <<XML;
3706 </outline>
3707 </body>
3708 </opml>
3709 XML
3710 }