--- deliantra/server/lib/cf.pm	2006/07/16 17:15:39	1.19
+++ deliantra/server/lib/cf.pm	2006/07/20 22:03:36	1.26
@@ -3,6 +3,9 @@
 use Symbol;
 use List::Util;
 use Storable;
+use Opcode;
+use Safe;
+use Safe::Hole;
 
 use Event;
 $Event::Eval = 1; # no idea why this is required, but it is
@@ -63,8 +66,15 @@
 
 # guessed hierarchies
 
-@cf::object::player::ISA = 'cf::object';
-@cf::object::map::ISA    = 'cf::object';
+@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
+@ext::cf::object::map::ISA    = @cf::object::map::ISA    = 'cf::object';
+
+# we bless all objects into derived classes to force a method lookup
+# within the Safe compartment.
+for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region)) {
+   no strict 'refs';
+   @{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
+}
 
 $Event::DIED = sub {
    warn "error in event callback: @_";
@@ -162,7 +172,7 @@
    $ext_pkg{$base} = $pkg;
 
 #   no strict 'refs';
-#   @{"$pkg\::ISA"} = cf::ext::;
+#   @{"$pkg\::ISA"} = ext::;
 
    register $base, $pkg;
 }
@@ -172,6 +182,10 @@
 
    warn "removing extension $pkg\n";
 
+   if (my $cb = $pkg->can ("on_unload")) {
+      $cb->($pkg);
+   }
+
    # remove hooks
    for my $idx (0 .. $#EVENT) {
       delete $hook[$idx]{$pkg};
@@ -218,11 +232,13 @@
 
       warn "reloading...\n";
       eval {
+         $_->cancel for Event::all_watchers;
+
          unload_extension $_ for @exts;
          delete $INC{"cf.pm"};
 
          # don't, removes xs symbols, too
-         #Symbol::delete_package $pkg;
+         #Symbol::delete_package __PACKAGE__;
 
          require cf;
       };
@@ -312,19 +328,6 @@
 *on_player_load = sub {
    my ($ob, $path) = @_;
 
-   if (open my $fh, "<:raw", "$path.cfperl") {
-
-      #d##TODO#remove
-
-      my $data = Storable::thaw do { local $/; <$fh> };
-
-      $data->{version} <= 1
-         or return; # too new
-
-      %$ob = %{$data->{ob}};
-      return;
-   }
-
    for my $o ($ob, $ob->inv) {
       if (my $value = $o->get_ob_key_value ("_perl_data")) {
          $o->set_ob_key_value ("_perl_data");
@@ -339,10 +342,95 @@
 
    $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
       for grep %$_, $ob, $ob->inv;
-
-   unlink "$path.cfperl";#d##TODO#remove
 };
 
+#############################################################################
+# core extensions - in perl
+
+=item cf::player::exists $login
+
+Returns true when the given account exists.
+
+=cut
+
+sub cf::player::exists($) {
+   cf::player::find $_[0]
+      or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
+}
+
+# rough implementation of a future "reply" method that works
+# with dialog boxes.
+sub cf::object::player::reply($$$;$) {
+   my ($self, $npc, $msg, $flags) = @_;
+
+   $flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
+
+   if ($self->{record_replies}) {
+      push @{ $self->{record_replies} }, [$npc, $msg, $flags];
+   } else {
+      $msg = $npc->name . " says: $msg" if $npc;
+      $self->message ($msg, $flags);
+   }
+}
+
+#############################################################################
+# map scripting support
+
+our $safe = new Safe "ext";
+our $safe_hole = new Safe::Hole;
+
+$SIG{FPE} = 'IGNORE';
+
+$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
+
+# here we export the classes and methods available to script code
+
+for (
+   ["cf::object"         => qw(contr)],
+   ["cf::object::player" => qw(player)],
+   ["cf::player"         => qw(peaceful)],
+) {
+   no strict 'refs';
+   my ($pkg, @funs) = @$_;
+   *{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
+      for @funs;
+}
+
+sub safe_eval($;@) {
+   my ($code, %vars) = @_;
+
+   my $qcode = $code;
+   $qcode =~ s/"/‟/g; # not allowed in #line filenames
+   $qcode =~ s/\n/\\n/g;
+
+   local $_;
+   local @ext::cf::_safe_eval_args = values %vars;
+
+   $code =
+      "do {\n"
+      . "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
+      . "#line 0 \"{$qcode}\"\n"
+      . $code
+      . "\n}"
+   ;
+
+   sub_generation_inc;
+   my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);
+   sub_generation_inc;
+
+   wantarray ? @res : $res[0]
+}
+
+sub register_script_function {
+   my ($fun, $cb) = @_;
+
+   no strict 'refs';
+   *{"ext::$fun"} = $safe_hole->wrap ($cb);
+}
+
+#############################################################################
+# initialisation
+
 register "<global>", __PACKAGE__;
 
 unshift @INC, maps_directory "perl";