server/lib/cf.pm

package cf;

use Symbol;
use List::Util;
use Storable;
use Opcode;
use Safe;
use Safe::Hole;

use Time::HiRes;
use Event;
$Event::Eval = 1; # no idea why this is required, but it is

use strict;

our %COMMAND;
our @EVENT;
our %PROP_TYPE;
our %PROP_IDX;
our $LIBDIR = maps_directory "perl";

our $TICK = MAX_TIME * 1e-6;
our $TICK_WATCHER;
our $NEXT_TICK;

BEGIN {
   @EVENT = map lc, @EVENT;

   *CORE::GLOBAL::warn = sub {
      my $msg = join "", @_;
      $msg .= "\n"
         unless $msg =~ /\n$/;

      print STDERR "cfperl: $msg";
      LOG llevError, "cfperl: $msg";
   };
}

my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!

# generate property mutators
sub prop_gen {
   my ($prefix, $class) = @_;

   no strict 'refs';

   for my $prop (keys %PROP_TYPE) {
      $prop =~ /^\Q$prefix\E_(.*$)/ or next;
      my $sub = lc $1;

      my $type = $PROP_TYPE{$prop};
      my $idx  = $PROP_IDX {$prop};

      *{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
         $_[0]->get_property ($type, $idx)
      };

      *{"$class\::set_$sub"} = sub {
         $_[0]->set_property ($type, $idx, $_[1]);
      } unless $ignore_set{$prop};
   }
}

# auto-generate most of the API

prop_gen OBJECT_PROP => "cf::object";
# CFAPI_OBJECT_ANIMATION?
prop_gen PLAYER_PROP => "cf::object::player";

prop_gen MAP_PROP    => "cf::map";
prop_gen ARCH_PROP   => "cf::arch";

# guessed hierarchies

@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 $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
   no strict 'refs';
   @{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
}

$Event::DIED = sub {
   warn "error in event callback: @_";
};

my %ext_pkg;
my @exts;
my @hook;
my %command;
my %extcmd;

sub inject_event {
   my $extension = shift;
   my $event_code = shift;

   my $cb = $hook[$event_code]{$extension}
      or return;

   &$cb
}

sub inject_global_event {
   my $event = shift;

   my $cb = $hook[$event]
      or return;

   List::Util::max map &$_, values %$cb
}

sub inject_command {
   my ($name, $obj, $params) = @_;

   for my $cmd (@{ $command{$name} }) {
      $cmd->[1]->($obj, $params);
   }

   -1
}

sub register_command {
   my ($name, $time, $cb) = @_;

   my $caller = caller;
   #warn "registering command '$name/$time' to '$caller'";

   push @{ $command{$name} }, [$time, $cb, $caller];
   $COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
}

sub register_extcmd {
   my ($name, $cb) = @_;

   my $caller = caller;
   #warn "registering extcmd '$name' to '$caller'";

   $extcmd{$name} = [$cb, $caller];
}

sub register {
   my ($base, $pkg) = @_;

   for my $idx (0 .. $#EVENT) {
      if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
         #warn "registering $EVENT[$idx] hook to '$pkg'\n";
         $hook[$idx]{$base} = $ref;
      }
   }
}

sub load_extension {
   my ($path) = @_;

   $path =~ /([^\/\\]+)\.ext$/ or die "$path";
   my $base = $1;
   my $pkg = $1;
   $pkg =~ s/[^[:word:]]/_/g;
   $pkg = "cf::ext::$pkg";

   warn "loading '$path' into '$pkg'\n";

   open my $fh, "<:utf8", $path
      or die "$path: $!";

   my $source =
      "package $pkg; use strict; use utf8;\n"
      . "#line 1 \"$path\"\n{\n"
      . (do { local $/; <$fh> })
      . "\n};\n1";

   eval $source
      or die "$path: $@";

   push @exts, $pkg;
   $ext_pkg{$base} = $pkg;

#   no strict 'refs';
#   @{"$pkg\::ISA"} = ext::;

   register $base, $pkg;
}

sub unload_extension {
   my ($pkg) = @_;

   warn "removing extension $pkg\n";

   # remove hooks
   for my $idx (0 .. $#EVENT) {
      delete $hook[$idx]{$pkg};
   }

   # remove commands
   for my $name (keys %command) {
      my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };

      if (@cb) {
         $command{$name} = \@cb;
         $COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
      } else {
         delete $command{$name};
         delete $COMMAND{"$name\000"};
      }
   }

   # remove extcmds
   for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
      delete $extcmd{$name};
   }

   if (my $cb = $pkg->can ("on_unload")) {
      eval {
         $cb->($pkg);
         1
      } or warn "$pkg unloaded, but with errors: $@";
   }

   Symbol::delete_package $pkg;
}

sub load_extensions {
   my $LIBDIR = maps_directory "perl";

   for my $ext (<$LIBDIR/*.ext>) {
      next unless -r $ext;
      eval {
         load_extension $ext;
         1
      } or warn "$ext not loaded: $@";
   }
}

sub _perl_reload(&) {
   my ($msg) = @_;

   $msg->("reloading...");

   eval {
      # 1. cancel all watchers
      $_->cancel for Event::all_watchers;

      # 2. unload all extensions
      for (@exts) {
         $msg->("unloading <$_>");
         unload_extension $_;
      }

      # 3. unload all modules loaded from $LIBDIR
      while (my ($k, $v) = each %INC) {
         next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;

         $msg->("removing <$k>");
         delete $INC{$k};

         $k =~ s/\.pm$//;
         $k =~ s/\//::/g;

         if (my $cb = $k->can ("unload_module")) {
            $cb->();
         }

         Symbol::delete_package $k;
      }

      # 4. get rid of ext::, as good as possible
      Symbol::delete_package "ext::$_"
         for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);

      # 5. remove register_script_function callbacks
      # TODO
      
      # 6. unload cf.pm "a bit"
      delete $INC{"cf.pm"};

      # don't, removes xs symbols, too
      #Symbol::delete_package __PACKAGE__;

      # 7. reload cf.pm
      $msg->("reloading cf.pm");
      require cf;
   };
   $msg->($@) if $@;

   $msg->("reloaded");
};

sub perl_reload() {
   _perl_reload {
      warn $_[0];
      print "$_[0]\n";
   };
}

register_command "perl-reload", 0, sub {
   my ($who, $arg) = @_;

   if ($who->flag (FLAG_WIZ)) {
      _perl_reload {
         warn $_[0];
         $who->message ($_[0]);
      };
   }
};

#############################################################################
# utility functions

use JSON::Syck (); # TODO# replace by JSON::PC once working

sub from_json($) {
   $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
   JSON::Syck::Load $_[0]
}

sub to_json($) {
   $JSON::Syck::ImplicitUnicode = 0;  # work around JSON::Syck bugs
   JSON::Syck::Dump $_[0]
}

#############################################################################
# extcmd framework, basically convert ext <msg>
# into pkg::->on_extcmd_arg1 (...) while shortcutting a few

sub on_extcmd {
   my ($pl, $buf) = @_;

   my $msg = eval { from_json $buf };

   if (ref $msg) {
      if (my $cb = $extcmd{$msg->{msgtype}}) {
         if (my %reply = $cb->[0]->($pl, $msg)) {
            $pl->ext_reply ($msg->{msgid}, %reply);
         }
      }
   } else {
      warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
   }

   1
}

#############################################################################
# load/save/clean perl data associated with a map

*on_mapclean = sub {
   my ($map) = @_;

   my $path = $map->tmpname;
   defined $path or return;

   unlink "$path.cfperl";
};

*on_mapin =
*on_mapload = sub {
   my ($map) = @_;

   my $path = $map->tmpname;
   $path = $map->path unless defined $path;

   open my $fh, "<:raw", "$path.cfperl"
      or return; # no perl data

   my $data = Storable::thaw do { local $/; <$fh> };

   $data->{version} <= 1
      or return; # too new

   $map->_set_obs ($data->{obs});
};

*on_mapout = sub {
   my ($map) = @_;

   my $path = $map->tmpname;
   $path = $map->path unless defined $path;

   my $obs = $map->_get_obs;

   if (defined $obs) {
      open my $fh, ">:raw", "$path.cfperl"
         or die "$path.cfperl: $!";

      stat $path;

      print $fh Storable::nfreeze {
         size    => (stat _)[7],
         time    => (stat _)[9],
         version => 1,
         obs     => $obs,
      };

      chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
   } else {
      unlink "$path.cfperl";
   }
};

#############################################################################
# load/save perl data associated with player->ob objects

sub all_objects(@) {
   @_, map all_objects ($_->inv), @_
}

*on_player_load = sub {
   my ($ob, $path) = @_;

   for my $o (all_objects $ob) {
      if (my $value = $o->get_ob_key_value ("_perl_data")) {
         $o->set_ob_key_value ("_perl_data");

         %$o = %{ Storable::thaw pack "H*", $value };
      }
   }
};

*on_player_save = sub {
   my ($ob, $path) = @_;

   $_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
      for grep %$_, all_objects $ob;
};

#############################################################################
# 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;
}

=item $player->reply ($npc, $msg[, $flags])

Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
can be C<undef>. Does the right thing when the player is currently in a
dialogue with the given NPC character.

=cut

# 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);
   }
}

=item $player->ext_reply ($msgid, $msgtype, %msg)

Sends an ext reply to the player.

=cut

sub cf::player::ext_reply($$$%) {
   my ($self, $id, %msg) = @_;

   $msg{msgid} = $id;

   $self->send ("ext " . to_json \%msg);
}

#############################################################################
# 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 pay_amount pay_player)],
   ["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);
}

#############################################################################
# the server's main()

sub run {
   Event::loop;
}

#############################################################################
# initialisation

register "<global>", __PACKAGE__;

unshift @INC, $LIBDIR;

load_extensions;

$TICK_WATCHER = Event->timer (
   prio => 1,
   at   => $NEXT_TICK || 1,
   cb   => sub {
      cf::server_tick; # one server iteration

      my $NOW = Event::time;
      $NEXT_TICK += $TICK;

      # if we are delayed by four ticks, skip them all
      $NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;

      $TICK_WATCHER->at ($NEXT_TICK);
      $TICK_WATCHER->start;
   },
);

1

Revision:	1.37
Committed:	Thu Aug 24 14:05:22 2006 UTC (20 years, 2 months ago) by root
Branch:	MAIN
Changes since 1.36:	+2 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	package cf;
2
3			use Symbol;
4			use List::Util;
5	root	1.6	use Storable;
6	root	1.23	use Opcode;
7			use Safe;
8			use Safe::Hole;
9	root	1.19
10	root	1.32	use Time::HiRes;
11	root	1.18	use Event;
12	root	1.19	$Event::Eval = 1; # no idea why this is required, but it is
13	root	1.1
14			use strict;
15
16			our %COMMAND;
17			our @EVENT;
18			our %PROP_TYPE;
19			our %PROP_IDX;
20	root	1.27	our $LIBDIR = maps_directory "perl";
21	root	1.1
22	root	1.35	our $TICK = MAX_TIME * 1e-6;
23			our $TICK_WATCHER;
24			our $NEXT_TICK;
25
26	root	1.1	BEGIN {
27			@EVENT = map lc, @EVENT;
28
29			*CORE::GLOBAL::warn = sub {
30			my $msg = join "", @_;
31			$msg .= "\n"
32			unless $msg =~ /\n$/;
33
34			print STDERR "cfperl: $msg";
35			LOG llevError, "cfperl: $msg";
36			};
37			}
38
39	root	1.9	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!
40
41	root	1.1	# generate property mutators
42			sub prop_gen {
43			my ($prefix, $class) = @_;
44
45			no strict 'refs';
46
47			for my $prop (keys %PROP_TYPE) {
48			$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49			my $sub = lc $1;
50
51			my $type = $PROP_TYPE{$prop};
52			my $idx = $PROP_IDX {$prop};
53
54			{"$class\::get_$sub"} = {"$class\::$sub"} = sub {
55			$_[0]->get_property ($type, $idx)
56			};
57
58			*{"$class\::set_$sub"} = sub {
59			$_[0]->set_property ($type, $idx, $_[1]);
60	root	1.9	} unless $ignore_set{$prop};
61	root	1.1	}
62			}
63
64			# auto-generate most of the API
65
66			prop_gen OBJECT_PROP => "cf::object";
67			# CFAPI_OBJECT_ANIMATION?
68			prop_gen PLAYER_PROP => "cf::object::player";
69
70			prop_gen MAP_PROP => "cf::map";
71			prop_gen ARCH_PROP => "cf::arch";
72
73			# guessed hierarchies
74
75	root	1.25	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
76			@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
77
78			# we bless all objects into derived classes to force a method lookup
79			# within the Safe compartment.
80	elmex	1.30	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
81	root	1.25	no strict 'refs';
82			@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
83			}
84	root	1.1
85	root	1.18	$Event::DIED = sub {
86			warn "error in event callback: @_";
87			};
88
89	root	1.5	my %ext_pkg;
90	root	1.1	my @exts;
91			my @hook;
92			my %command;
93	root	1.15	my %extcmd;
94	root	1.1
95			sub inject_event {
96	root	1.14	my $extension = shift;
97			my $event_code = shift;
98	root	1.1
99	root	1.14	my $cb = $hook[$event_code]{$extension}
100	root	1.5	or return;
101
102	root	1.14	&$cb
103	root	1.5	}
104
105			sub inject_global_event {
106	root	1.12	my $event = shift;
107	root	1.5
108	root	1.12	my $cb = $hook[$event]
109	root	1.1	or return;
110
111	root	1.12	List::Util::max map &$_, values %$cb
112	root	1.1	}
113
114			sub inject_command {
115			my ($name, $obj, $params) = @_;
116
117			for my $cmd (@{ $command{$name} }) {
118			$cmd->[1]->($obj, $params);
119			}
120
121			-1
122			}
123
124			sub register_command {
125			my ($name, $time, $cb) = @_;
126
127			my $caller = caller;
128	root	1.16	#warn "registering command '$name/$time' to '$caller'";
129	root	1.4
130	root	1.1	push @{ $command{$name} }, [$time, $cb, $caller];
131			$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
132			}
133
134	root	1.16	sub register_extcmd {
135			my ($name, $cb) = @_;
136
137			my $caller = caller;
138			#warn "registering extcmd '$name' to '$caller'";
139
140			$extcmd{$name} = [$cb, $caller];
141			}
142
143	root	1.6	sub register {
144			my ($base, $pkg) = @_;
145
146			for my $idx (0 .. $#EVENT) {
147			if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {
148	root	1.16	#warn "registering $EVENT[$idx] hook to '$pkg'\n";
149	root	1.6	$hook[$idx]{$base} = $ref;
150			}
151			}
152			}
153
154	root	1.1	sub load_extension {
155			my ($path) = @_;
156
157			$path =~ /([^\/\\]+)\.ext$/ or die "$path";
158	root	1.5	my $base = $1;
159	root	1.1	my $pkg = $1;
160			$pkg =~ s/[^[:word:]]/_/g;
161			$pkg = "cf::ext::$pkg";
162
163			warn "loading '$path' into '$pkg'\n";
164
165			open my $fh, "<:utf8", $path
166			or die "$path: $!";
167
168			my $source =
169			"package $pkg; use strict; use utf8;\n"
170			. "#line 1 \"$path\"\n{\n"
171			. (do { local $/; <$fh> })
172			. "\n};\n1";
173
174			eval $source
175			or die "$path: $@";
176
177			push @exts, $pkg;
178	root	1.5	$ext_pkg{$base} = $pkg;
179	root	1.1
180	root	1.6	# no strict 'refs';
181	root	1.23	# @{"$pkg\::ISA"} = ext::;
182	root	1.1
183	root	1.6	register $base, $pkg;
184	root	1.1	}
185
186			sub unload_extension {
187			my ($pkg) = @_;
188
189			warn "removing extension $pkg\n";
190
191			# remove hooks
192			for my $idx (0 .. $#EVENT) {
193			delete $hook[$idx]{$pkg};
194			}
195
196			# remove commands
197			for my $name (keys %command) {
198			my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
199
200			if (@cb) {
201			$command{$name} = \@cb;
202			$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
203			} else {
204			delete $command{$name};
205			delete $COMMAND{"$name\000"};
206			}
207			}
208
209	root	1.15	# remove extcmds
210	root	1.16	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
211			delete $extcmd{$name};
212	root	1.15	}
213
214	elmex	1.31	if (my $cb = $pkg->can ("on_unload")) {
215			eval {
216			$cb->($pkg);
217			1
218			} or warn "$pkg unloaded, but with errors: $@";
219			}
220
221	root	1.1	Symbol::delete_package $pkg;
222			}
223
224			sub load_extensions {
225			my $LIBDIR = maps_directory "perl";
226
227			for my $ext (<$LIBDIR/*.ext>) {
228	root	1.3	next unless -r $ext;
229	root	1.2	eval {
230			load_extension $ext;
231			1
232			} or warn "$ext not loaded: $@";
233	root	1.1	}
234			}
235
236	root	1.36	sub _perl_reload(&) {
237			my ($msg) = @_;
238
239			$msg->("reloading...");
240
241			eval {
242			# 1. cancel all watchers
243			$_->cancel for Event::all_watchers;
244
245			# 2. unload all extensions
246			for (@exts) {
247			$msg->("unloading <$_>");
248			unload_extension $_;
249			}
250
251			# 3. unload all modules loaded from $LIBDIR
252			while (my ($k, $v) = each %INC) {
253			next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
254
255			$msg->("removing <$k>");
256			delete $INC{$k};
257	root	1.1
258	root	1.36	$k =~ s/\.pm$//;
259			$k =~ s/\//::/g;
260	root	1.3
261	root	1.36	if (my $cb = $k->can ("unload_module")) {
262			$cb->();
263	root	1.27	}
264
265	root	1.36	Symbol::delete_package $k;
266			}
267	root	1.27
268	root	1.36	# 4. get rid of ext::, as good as possible
269			Symbol::delete_package "ext::$_"
270			for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
271
272			# 5. remove register_script_function callbacks
273			# TODO
274
275			# 6. unload cf.pm "a bit"
276			delete $INC{"cf.pm"};
277
278			# don't, removes xs symbols, too
279			#Symbol::delete_package __PACKAGE__;
280
281			# 7. reload cf.pm
282			$msg->("reloading cf.pm");
283			require cf;
284			};
285			$msg->($@) if $@;
286	root	1.27
287	root	1.36	$msg->("reloaded");
288			};
289	root	1.27
290	root	1.36	sub perl_reload() {
291			_perl_reload {
292			warn $_[0];
293			print "$_[0]\n";
294			};
295			}
296	root	1.27
297	root	1.36	register_command "perl-reload", 0, sub {
298			my ($who, $arg) = @_;
299	root	1.27
300	root	1.36	if ($who->flag (FLAG_WIZ)) {
301			_perl_reload {
302			warn $_[0];
303			$who->message ($_[0]);
304	root	1.4	};
305	root	1.1	}
306			};
307
308	root	1.8	#############################################################################
309	root	1.28	# utility functions
310
311			use JSON::Syck (); # TODO# replace by JSON::PC once working
312
313			sub from_json($) {
314	root	1.29	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
315	root	1.28	JSON::Syck::Load $_[0]
316			}
317
318			sub to_json($) {
319	root	1.29	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
320	root	1.28	JSON::Syck::Dump $_[0]
321			}
322
323			#############################################################################
324			# extcmd framework, basically convert ext <msg>
325	root	1.15	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
326
327			sub on_extcmd {
328			my ($pl, $buf) = @_;
329
330	root	1.28	my $msg = eval { from_json $buf };
331
332			if (ref $msg) {
333			if (my $cb = $extcmd{$msg->{msgtype}}) {
334			if (my %reply = $cb->[0]->($pl, $msg)) {
335			$pl->ext_reply ($msg->{msgid}, %reply);
336			}
337			}
338			} else {
339			warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
340			}
341	root	1.15
342	root	1.28	1
343	root	1.15	}
344
345			#############################################################################
346	root	1.8	# load/save/clean perl data associated with a map
347
348	root	1.7	*on_mapclean = sub {
349	root	1.13	my ($map) = @_;
350	root	1.7
351			my $path = $map->tmpname;
352			defined $path or return;
353
354			unlink "$path.cfperl";
355			};
356
357	root	1.6	*on_mapin =
358			*on_mapload = sub {
359	root	1.13	my ($map) = @_;
360	root	1.6
361			my $path = $map->tmpname;
362			$path = $map->path unless defined $path;
363
364			open my $fh, "<:raw", "$path.cfperl"
365			or return; # no perl data
366
367			my $data = Storable::thaw do { local $/; <$fh> };
368
369			$data->{version} <= 1
370			or return; # too new
371
372			$map->_set_obs ($data->{obs});
373			};
374
375			*on_mapout = sub {
376	root	1.13	my ($map) = @_;
377	root	1.6
378			my $path = $map->tmpname;
379			$path = $map->path unless defined $path;
380
381			my $obs = $map->_get_obs;
382
383			if (defined $obs) {
384			open my $fh, ">:raw", "$path.cfperl"
385			or die "$path.cfperl: $!";
386
387	root	1.8	stat $path;
388
389			print $fh Storable::nfreeze {
390			size => (stat _)[7],
391			time => (stat _)[9],
392			version => 1,
393			obs => $obs,
394			};
395
396			chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible g
397			} else {
398			unlink "$path.cfperl";
399			}
400			};
401
402			#############################################################################
403			# load/save perl data associated with player->ob objects
404
405	root	1.33	sub all_objects(@) {
406			@_, map all_objects ($_->inv), @_
407			}
408
409	root	1.8	*on_player_load = sub {
410	root	1.13	my ($ob, $path) = @_;
411	root	1.8
412	root	1.33	for my $o (all_objects $ob) {
413	root	1.11	if (my $value = $o->get_ob_key_value ("_perl_data")) {
414			$o->set_ob_key_value ("_perl_data");
415
416			%$o = %{ Storable::thaw pack "H*", $value };
417			}
418			}
419	root	1.8	};
420
421			*on_player_save = sub {
422	root	1.13	my ($ob, $path) = @_;
423	root	1.8
424	root	1.11	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
425	root	1.33	for grep %$_, all_objects $ob;
426	root	1.6	};
427
428	root	1.22	#############################################################################
429			# core extensions - in perl
430
431	root	1.23	=item cf::player::exists $login
432
433			Returns true when the given account exists.
434
435			=cut
436
437			sub cf::player::exists($) {
438			cf::player::find $_[0]
439			or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
440			}
441
442	root	1.28	=item $player->reply ($npc, $msg[, $flags])
443
444			Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
445			can be C<undef>. Does the right thing when the player is currently in a
446			dialogue with the given NPC character.
447
448			=cut
449
450	root	1.22	# rough implementation of a future "reply" method that works
451			# with dialog boxes.
452	root	1.23	sub cf::object::player::reply($$$;$) {
453			my ($self, $npc, $msg, $flags) = @_;
454
455			$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
456	root	1.22
457	root	1.24	if ($self->{record_replies}) {
458			push @{ $self->{record_replies} }, [$npc, $msg, $flags];
459			} else {
460			$msg = $npc->name . " says: $msg" if $npc;
461			$self->message ($msg, $flags);
462			}
463	root	1.22	}
464
465	root	1.28	=item $player->ext_reply ($msgid, $msgtype, %msg)
466
467			Sends an ext reply to the player.
468
469			=cut
470
471			sub cf::player::ext_reply($$$%) {
472			my ($self, $id, %msg) = @_;
473
474			$msg{msgid} = $id;
475
476			$self->send ("ext " . to_json \%msg);
477			}
478
479	root	1.22	#############################################################################
480	root	1.23	# map scripting support
481
482			our $safe = new Safe "ext";
483			our $safe_hole = new Safe::Hole;
484
485			$SIG{FPE} = 'IGNORE';
486
487			$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
488
489	root	1.25	# here we export the classes and methods available to script code
490
491			for (
492	root	1.27	["cf::object" => qw(contr pay_amount pay_player)],
493	root	1.25	["cf::object::player" => qw(player)],
494			["cf::player" => qw(peaceful)],
495			) {
496			no strict 'refs';
497			my ($pkg, @funs) = @$_;
498			*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
499			for @funs;
500			}
501	root	1.23
502			sub safe_eval($;@) {
503			my ($code, %vars) = @_;
504
505			my $qcode = $code;
506			$qcode =~ s/"/‟/g; # not allowed in #line filenames
507			$qcode =~ s/\n/\\n/g;
508
509			local $_;
510			local @ext::cf::_safe_eval_args = values %vars;
511
512	root	1.25	$code =
513	root	1.23	"do {\n"
514			. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
515			. "#line 0 \"{$qcode}\"\n"
516			. $code
517			. "\n}"
518	root	1.25	;
519
520			sub_generation_inc;
521			my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);
522			sub_generation_inc;
523
524			wantarray ? @res : $res[0]
525	root	1.23	}
526
527			sub register_script_function {
528			my ($fun, $cb) = @_;
529
530			no strict 'refs';
531			*{"ext::$fun"} = $safe_hole->wrap ($cb);
532			}
533
534			#############################################################################
535	root	1.34	# the server's main()
536
537			sub run {
538			Event::loop;
539			}
540
541			#############################################################################
542	root	1.22	# initialisation
543
544	root	1.6	register "<global>", __PACKAGE__;
545
546	root	1.27	unshift @INC, $LIBDIR;
547	root	1.17
548	root	1.1	load_extensions;
549
550	root	1.35	$TICK_WATCHER = Event->timer (
551			prio => 1,
552			at => $NEXT_TICK \|\| 1,
553			cb => sub {
554			cf::server_tick; # one server iteration
555
556			my $NOW = Event::time;
557			$NEXT_TICK += $TICK;
558
559	root	1.37	# if we are delayed by four ticks, skip them all
560			$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
561	root	1.35
562			$TICK_WATCHER->at ($NEXT_TICK);
563			$TICK_WATCHER->start;
564			},
565			);
566
567	root	1.1	1
568