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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.53 by root, Tue Aug 29 13:11:58 2006 UTC vs.
Revision 1.95 by root, Fri Dec 22 02:04:20 2006 UTC

…		…
5	use Storable;	5	use Storable;
6	use Opcode;	6	use Opcode;
7	use Safe;	7	use Safe;
8	use Safe::Hole;	8	use Safe::Hole;
9		9
		10	use IO::AIO ();
		11	use YAML::Syck ();
10	use Time::HiRes;	12	use Time::HiRes;
11	use Event;	13	use Event;
12	$Event::Eval = 1; # no idea why this is required, but it is	14	$Event::Eval = 1; # no idea why this is required, but it is
13		15
		16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		17	$YAML::Syck::ImplicitUnicode = 1;
		18
14	use strict;	19	use strict;
15		20
16	_reload_1;	21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
17		22
18	our %COMMAND = ();	23	our %COMMAND = ();
		24	our %COMMAND_TIME = ();
		25	our %EXTCMD = ();
		26
		27	_init_vars;
		28
19	our @EVENT;	29	our @EVENT;
20	our %PROP_TYPE;	30	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		31
24	our $TICK = MAX_TIME * 1e-6;	32	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	33	our $TICK_WATCHER;
26	our $NEXT_TICK;	34	our $NEXT_TICK;
		35
		36	our %CFG;
		37
		38	our $UPTIME; $UPTIME ||= time;
		39
		40	#############################################################################
		41
		42	=head2 GLOBAL VARIABLES
		43
		44	=over 4
		45
		46	=item $cf::UPTIME
		47
		48	The timestamp of the server start (so not actually an uptime).
		49
		50	=item $cf::LIBDIR
		51
		52	The perl library directory, where extensions and cf-specific modules can
		53	be found. It will be added to C<@INC> automatically.
		54
		55	=item $cf::TICK
		56
		57	The interval between server ticks, in seconds.
		58
		59	=item %cf::CFG
		60
		61	Configuration for the server, loaded from C</etc/crossfire/config>, or
		62	from wherever your confdir points to.
		63
		64	=back
		65
		66	=cut
27		67
28	BEGIN {	68	BEGIN {
29	*CORE::GLOBAL::warn = sub {	69	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	70	my $msg = join "", @_;
31	$msg .= "\n"	71	$msg .= "\n"
…		…
34	print STDERR "cfperl: $msg";	74	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	75	LOG llevError, "cfperl: $msg";
36	};	76	};
37	}	77	}
38		78
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	79	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		80	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	81	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	82	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	83	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
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	} unless $ignore_set{$prop};
61	}
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	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	84	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		85
75	# we bless all objects into (empty) derived classes to force a method lookup	86	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	87	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	88	for my $pkg (qw(
		89	cf::global
		90	cf::object cf::object::player
		91	cf::client cf::player
		92	cf::arch cf::living
		93	cf::map cf::party cf::region
		94	)) {
78	no strict 'refs';	95	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	96	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	97	}
81		98
82	$Event::DIED = sub {	99	$Event::DIED = sub {
…		…
84	};	101	};
85		102
86	my %ext_pkg;	103	my %ext_pkg;
87	my @exts;	104	my @exts;
88	my @hook;	105	my @hook;
89	my %command;
90	my %extcmd;
91		106
92	#############################################################################	107	=head2 UTILITY FUNCTIONS
93	# utility functions	108
		109	=over 4
		110
		111	=cut
94		112
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	113	use JSON::Syck (); # TODO# replace by JSON::PC once working
		114
		115	=item $ref = cf::from_json $json
		116
		117	Converts a JSON string into the corresponding perl data structure.
		118
		119	=cut
96		120
97	sub from_json($) {	121	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	122	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	123	JSON::Syck::Load $_[0]
100	}	124	}
101		125
		126	=item $json = cf::to_json $ref
		127
		128	Converts a perl data structure into its JSON representation.
		129
		130	=cut
		131
102	sub to_json($) {	132	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	133	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	134	JSON::Syck::Dump $_[0]
105	}	135	}
106		136
		137	=back
		138
		139	=cut
		140
107	#############################################################################	141	#############################################################################
108	# "new" plug-in system
109		142
110	=item $object->attach ($attachment, key => $value...)	143	=head2 ATTACHABLE OBJECTS
111		144
112	=item $object->detach ($attachment)	145	Many objects in crossfire are so-called attachable objects. That means you can
		146	attach callbacks/event handlers (a collection of which is called an "attachment")
		147	to it. All such attachable objects support the following methods.
113		148
114	Attach/detach a pre-registered attachment to an object.	149	In the following description, CLASS can be any of C<global>, C<object>
		150	C<player>, C<client> or C<map> (i.e. the attachable objects in
		151	crossfire+).
115		152
116	=item $player->attach ($attachment, key => $value...)	153	=over 4
117		154
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	155	=item $attachable->attach ($attachment, key => $value...)
123		156
124	=item $map->detach ($attachment)	157	=item $attachable->detach ($attachment)
125		158
126	Attach/detach a pre-registered attachment to a map.	159	Attach/detach a pre-registered attachment to a specific object and give it
		160	the specified key/value pairs as arguments.
127		161
128	=item cf::attach_global ...	162	Example, attach a minesweeper attachment to the given object, making it a
		163	10x10 minesweeper game:
129		164
130	Attach handlers for global events.	165	$obj->attach (minesweeper => width => 10, height => 10);
131		166
132	This and all following C<attach_*>-functions expect any number of the	167	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	168
		169	Checks wether the named attachment is currently attached to the object.
		170
		171	=item cf::CLASS->attach ...
		172
		173	=item cf::CLASS->detach ...
		174
		175	Define an anonymous attachment and attach it to all objects of the given
		176	CLASS. See the next function for an explanation of its arguments.
		177
		178	You can attach to global events by using the C<cf::global> class.
		179
		180	Example, log all player logins:
		181
		182	cf::player->attach (
		183	on_login => sub {
		184	my ($pl) = @_;
		185	...
		186	},
		187	);
		188
		189	Example, attach to the jeweler skill:
		190
		191	cf::object->attach (
		192	type => cf::SKILL,
		193	subtype => cf::SK_JEWELER,
		194	on_use_skill => sub {
		195	my ($sk, $ob, $part, $dir, $msg) = @_;
		196	...
		197	},
		198	);
		199
		200	=item cf::CLASS::attachment $name, ...
		201
		202	Register an attachment by C<$name> through which attachable objects of the
		203	given CLASS can refer to this attachment.
		204
		205	Some classes such as crossfire maps and objects can specify attachments
		206	that are attached at load/instantiate time, thus the need for a name.
		207
		208	These calls expect any number of the following handler/hook descriptions:
134		209
135	=over 4	210	=over 4
136		211
137	=item prio => $number	212	=item prio => $number
138		213
…		…
140	by another C<prio> setting). Lower priority handlers get executed	215	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	216	earlier. The default priority is C<0>, and many built-in handlers are
142	registered at priority C<-1000>, so lower priorities should not be used	217	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	218	unless you know what you are doing.
144		219
		220	=item type => $type
		221
		222	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		223	given type of objects only (the additional parameter C<subtype> can be
		224	used to further limit to the given subtype).
		225
145	=item on_I<event> => \&cb	226	=item on_I<event> => \&cb
146		227
147	Call the given code reference whenever the named event happens (event is	228	Call the given code reference whenever the named event happens (event is
148	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	229	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
149	handlers are recognised generally depends on the type of object these	230	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	239	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	240	object/class are recognised.
160		241
161	=back	242	=back
162		243
163	=item cf::attach_to_type $object_type, $subtype, ...	244	Example, define an attachment called "sockpuppet" that calls the given
		245	event handler when a monster attacks:
164		246
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	247	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	248	on_skill_attack => sub {
167	type.	249	my ($self, $victim) = @_;
168		250	...
169	=item cf::attach_to_objects ...	251	}
170		252	}
171	Attach handlers to all objects. Do not use this except for debugging or
172	very rare events, as handlers are (obviously) called for I<all> objects in
173	the game.
174
175	=item cf::attach_to_players ...
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		253
193	=cut	254	=cut
194		255
195	# the following variables are defined in .xs and must not be re-created	256	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	257	our @CB_GLOBAL = (); # registry for all global events
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	258	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	259	our @CB_PLAYER = ();
		260	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	261	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	262	our @CB_MAP = ();
201		263
202	my %attachment;	264	my %attachment;
203		265
204	sub _attach_cb($\%$$$) {	266	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	267	my ($registry, $event, $prio, $cb) = @_;
206		268
207	use sort 'stable';	269	use sort 'stable';
208		270
209	$cb = [$prio, $cb];	271	$cb = [$prio, $cb];
210		272
211	@{$registry->[$event]} = sort	273	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	274	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	275	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	276	}
217		277
218	# attach handles attaching event callbacks	278	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	279	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	280	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	281	sub _attach {
222	my ($registry, $klass, @arg) = @_;	282	my ($registry, $klass, @arg) = @_;
223		283
		284	my $object_type;
224	my $prio = 0;	285	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	286	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
232		287
233	while (@arg) {	288	while (@arg) {
234	my $type = shift @arg;	289	my $type = shift @arg;
235		290
236	if ($type eq "prio") {	291	if ($type eq "prio") {
237	$prio = shift @arg;	292	$prio = shift @arg;
238		293
		294	} elsif ($type eq "type") {
		295	$object_type = shift @arg;
		296	$registry = $CB_TYPE[$object_type] ||= [];
		297
		298	} elsif ($type eq "subtype") {
		299	defined $object_type or Carp::croak "subtype specified without type";
		300	my $object_subtype = shift @arg;
		301	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		302
239	} elsif ($type eq "package") {	303	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	304	my $pkg = shift @arg;
241		305
242	while (my ($name, $id) = each %cb_id) {	306	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	307	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	308	_attach_cb $registry, $id, $prio, $cb;
245	}	309	}
246	}	310	}
247		311
248	} elsif (exists $cb_id{$type}) {	312	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	313	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		314
251	} elsif (ref $type) {	315	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	316	warn "attaching objects not supported, ignoring.\n";
253		317
254	} else {	318	} else {
255	shift @arg;	319	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	320	warn "attach argument '$type' not supported, ignoring.\n";
257	}	321	}
258	}	322	}
259
260	\%undo
261	}	323	}
262		324
263	sub _attach_attachment {	325	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	326	my ($obj, $name, %arg) = @_;
265		327
266	my $res;	328	return if exists $obj->{_attachment}{$name};
267		329
268	if (my $attach = $attachment{$name}) {	330	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	331	my $registry = $obj->registry;
270		332
271	for (@$attach) {	333	for (@$attach) {
272	my ($klass, @attach) = @$_;	334	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	335	_attach $registry, $klass, @attach;
274	}	336	}
275		337
276	$obj->{$name} = \%arg;	338	$obj->{$name} = \%arg;
277	} else {	339	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	340	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	341	}
280		342
281	$obj->{_attachment}{$name} = undef;	343	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	344	}
286		345
287	sub cf::object::attach {	346	sub cf::attachable::attach {
288	my ($obj, $name, %arg) = @_;	347	if (ref $_[0]) {
		348	_object_attach @_;
		349	} else {
		350	_attach shift->_attach_registry, @_;
		351	}
		352	};
289		353
290	_attach_attachment $obj, $name, %arg;	354	# all those should be optimised
291	}
292
293	sub cf::player::attach {
294	my ($obj, $name, %arg) = @_;
295
296	_attach_attachment $obj, $name, %arg;
297	}
298
299	sub cf::map::attach {
300	my ($obj, $name, %arg) = @_;
301
302	_attach_attachment $obj, $name, %arg;
303	}
304
305	sub cf::object::detach {	355	sub cf::attachable::detach {
306	my ($obj, $name) = @_;	356	my ($obj, $name) = @_;
307	die;#d#	357
308	}	358	if (ref $obj) {
309	sub cf::player::detach {	359	delete $obj->{_attachment}{$name};
		360	reattach ($obj);
		361	} else {
		362	Carp::croak "cannot, currently, detach class attachments";
		363	}
		364	};
		365
		366	sub cf::attachable::attached {
310	my ($obj, $name) = @_;	367	my ($obj, $name) = @_;
311	die;#d#
312	}
313	sub cf::map::detach {
314	my ($obj, $name) = @_;
315	die;#d#
316	}
317		368
318	sub attach_global {	369	exists $obj->{_attachment}{$name}
319	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
320	}	370	}
321		371
322	sub attach_to_type {	372	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
323	my $type = shift;	373	eval "#line " . __LINE__ . " 'cf.pm'
324	my $subtype = shift;	374	sub cf::\L$klass\E::_attach_registry {
		375	(\\\@CB_$klass, KLASS_$klass)
		376	}
325		377
326	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_	378	sub cf::\L$klass\E::attachment {
327	}
328
329	sub attach_to_objects {
330	_attach @CB_OBJECT, KLASS_OBJECT, @_
331	}
332
333	sub attach_to_players {
334	_attach @CB_PLAYER, KLASS_PLAYER, @_
335	}
336
337	sub attach_to_maps {
338	_attach @CB_MAP, KLASS_MAP, @_
339	}
340
341	sub register_attachment {
342	my $name = shift;	379	my \$name = shift;
343		380
344	$attachment{$name} = [[KLASS_OBJECT, @_]];
345	}
346
347	sub register_map_attachment {
348	my $name = shift;
349
350	$attachment{$name} = [[KLASS_MAP, @_]];	381	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		382	}
		383	";
		384	die if $@;
351	}	385	}
352		386
353	our $override;	387	our $override;
354	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	388	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
355		389
…		…
369	for (@$callbacks) {	403	for (@$callbacks) {
370	eval { &{$_->[1]} };	404	eval { &{$_->[1]} };
371		405
372	if ($@) {	406	if ($@) {
373	warn "$@";	407	warn "$@";
374	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	408	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
375	override;	409	override;
376	}	410	}
377		411
378	return 1 if $override;	412	return 1 if $override;
379	}	413	}
380		414
381	0	415	0
382	}	416	}
		417
		418	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...
		419
		420	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
		421
		422	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
		423
		424	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)
		425
		426	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
		427
		428	Generate a global/object/player/map-specific event with the given arguments.
		429
		430	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
		431	removed in future versions), and there is no public API to access override
		432	results (if you must, access C<@cf::invoke_results> directly).
		433
		434	=back
		435
		436	=cut
		437
		438	#############################################################################
		439
		440	=head2 METHODS VALID FOR ALL ATTACHABLE OBJECTS
		441
		442	Attachable objects includes objects, players, clients and maps.
		443
		444	=over 4
		445
		446	=item $object->valid
		447
		448	Just because you have a perl object does not mean that the corresponding
		449	C-level object still exists. If you try to access an object that has no
		450	valid C counterpart anymore you get an exception at runtime. This method
		451	can be used to test for existence of the C object part without causing an
		452	exception.
		453
		454	=back
		455
		456	=cut
383		457
384	#############################################################################	458	#############################################################################
385	# object support	459	# object support
386		460
387	sub instantiate {	461	sub instantiate {
…		…
407		481
408	for my $name (keys %{ $obj->{_attachment} || {} }) {	482	for my $name (keys %{ $obj->{_attachment} || {} }) {
409	if (my $attach = $attachment{$name}) {	483	if (my $attach = $attachment{$name}) {
410	for (@$attach) {	484	for (@$attach) {
411	my ($klass, @attach) = @$_;	485	my ($klass, @attach) = @$_;
412	_attach @$registry, $klass, @attach;	486	_attach $registry, $klass, @attach;
413	}	487	}
414	} else {	488	} else {
415	warn "object uses attachment '$name' that is not available, postponing.\n";	489	warn "object uses attachment '$name' that is not available, postponing.\n";
416	}	490	}
417	}	491	}
418	}	492	}
419		493
420	sub object_freezer_save {	494	sub object_freezer_save {
421	my ($filename, $objs) = @_;	495	my ($filename, $rdata, $objs) = @_;
422		496
423	if (@$objs) {	497	if (length $$rdata) {
		498	warn sprintf "saving %s (%d,%d)\n",
		499	$filename, length $$rdata, scalar @$objs;
		500
424	open my $fh, ">:raw", "$filename.pst~";	501	if (open my $fh, ">:raw", "$filename~") {
		502	chmod SAVE_MODE, $fh;
		503	syswrite $fh, $$rdata;
		504	close $fh;
		505
		506	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		507	chmod SAVE_MODE, $fh;
425	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	508	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
426	close $fh;	509	close $fh;
427	chmod SAVE_MODE, "$filename.pst~";
428	rename "$filename.pst~", "$filename.pst";	510	rename "$filename.pst~", "$filename.pst";
		511	} else {
		512	unlink "$filename.pst";
		513	}
		514
		515	rename "$filename~", $filename;
		516	} else {
		517	warn "FATAL: $filename~: $!\n";
		518	}
429	} else {	519	} else {
		520	unlink $filename;
430	unlink "$filename.pst";	521	unlink "$filename.pst";
431	}	522	}
		523	}
432		524
433	chmod SAVE_MODE, "$filename~";	525	sub object_freezer_as_string {
434	rename "$filename~", $filename;	526	my ($rdata, $objs) = @_;
		527
		528	use Data::Dumper;
		529
		530	$$rdata . Dumper $objs
435	}	531	}
436		532
437	sub object_thawer_load {	533	sub object_thawer_load {
438	my ($filename) = @_;	534	my ($filename) = @_;
439		535
		536	local $/;
		537
		538	my $av;
		539
		540	#TODO: use sysread etc.
		541	if (open my $data, "<:raw:perlio", $filename) {
		542	$data = <$data>;
440	open my $fh, "<:raw:perlio", "$filename.pst"	543	if (open my $pst, "<:raw:perlio", "$filename.pst") {
441	or return;	544	$av = eval { (Storable::thaw <$pst>)->{objs} };
		545	}
		546	return ($data, $av);
		547	}
442		548
443	eval { local $/; (Storable::thaw <$fh>)->{objs} }	549	()
444	}	550	}
445		551
446	attach_to_objects	552	cf::object->attach (
447	prio => -1000000,	553	prio => -1000000,
448	on_clone => sub {	554	on_clone => sub {
449	my ($src, $dst) = @_;	555	my ($src, $dst) = @_;
450		556
451	@{$dst->registry} = @{$src->registry};	557	@{$dst->registry} = @{$src->registry};
…		…
453	%$dst = %$src;	559	%$dst = %$src;
454		560
455	%{$dst->{_attachment}} = %{$src->{_attachment}}	561	%{$dst->{_attachment}} = %{$src->{_attachment}}
456	if exists $src->{_attachment};	562	if exists $src->{_attachment};
457	},	563	},
458	;	564	);
459		565
460	#############################################################################	566	#############################################################################
461	# old plug-in events	567	# command handling &c
462		568
463	sub inject_event {	569	=item cf::register_command $name => \&callback($ob,$args);
464	my $extension = shift;
465	my $event_code = shift;
466		570
467	my $cb = $hook[$event_code]{$extension}	571	Register a callback for execution when the client sends the user command
468	or return;	572	$name.
469		573
470	&$cb	574	=cut
471	}
472
473	sub inject_global_event {
474	my $event = shift;
475
476	my $cb = $hook[$event]
477	or return;
478
479	List::Util::max map &$_, values %$cb
480	}
481
482	sub inject_command {
483	my ($name, $obj, $params) = @_;
484
485	for my $cmd (@{ $command{$name} }) {
486	$cmd->[1]->($obj, $params);
487	}
488
489	-1
490	}
491		575
492	sub register_command {	576	sub register_command {
493	my ($name, $time, $cb) = @_;	577	my ($name, $cb) = @_;
494		578
495	my $caller = caller;	579	my $caller = caller;
496	#warn "registering command '$name/$time' to '$caller'";	580	#warn "registering command '$name/$time' to '$caller'";
497		581
498	push @{ $command{$name} }, [$time, $cb, $caller];	582	push @{ $COMMAND{$name} }, [$caller, $cb];
499	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
500	}	583	}
		584
		585	=item cf::register_extcmd $name => \&callback($pl,$packet);
		586
		587	Register a callbackf ro execution when the client sends an extcmd packet.
		588
		589	If the callback returns something, it is sent back as if reply was being
		590	called.
		591
		592	=cut
501		593
502	sub register_extcmd {	594	sub register_extcmd {
503	my ($name, $cb) = @_;	595	my ($name, $cb) = @_;
504		596
505	my $caller = caller;	597	my $caller = caller;
506	#warn "registering extcmd '$name' to '$caller'";	598	#warn "registering extcmd '$name' to '$caller'";
507		599
508	$extcmd{$name} = [$cb, $caller];	600	$EXTCMD{$name} = [$cb, $caller];
509	}	601	}
		602
		603	cf::player->attach (
		604	on_command => sub {
		605	my ($pl, $name, $params) = @_;
		606
		607	my $cb = $COMMAND{$name}
		608	or return;
		609
		610	for my $cmd (@$cb) {
		611	$cmd->[1]->($pl->ob, $params);
		612	}
		613
		614	cf::override;
		615	},
		616	on_extcmd => sub {
		617	my ($pl, $buf) = @_;
		618
		619	my $msg = eval { from_json $buf };
		620
		621	if (ref $msg) {
		622	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		623	if (my %reply = $cb->[0]->($pl, $msg)) {
		624	$pl->ext_reply ($msg->{msgid}, %reply);
		625	}
		626	}
		627	} else {
		628	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		629	}
		630
		631	cf::override;
		632	},
		633	);
510		634
511	sub register {	635	sub register {
512	my ($base, $pkg) = @_;	636	my ($base, $pkg) = @_;
513		637
514	#TODO	638	#TODO
…		…
533	. "#line 1 \"$path\"\n{\n"	657	. "#line 1 \"$path\"\n{\n"
534	. (do { local $/; <$fh> })	658	. (do { local $/; <$fh> })
535	. "\n};\n1";	659	. "\n};\n1";
536		660
537	eval $source	661	eval $source
538	or die "$path: $@";	662	or die $@ ? "$path: $@\n"
		663	: "extension disabled.\n";
539		664
540	push @exts, $pkg;	665	push @exts, $pkg;
541	$ext_pkg{$base} = $pkg;	666	$ext_pkg{$base} = $pkg;
542		667
543	# no strict 'refs';	668	# no strict 'refs';
…		…
556	# for my $idx (0 .. $#PLUGIN_EVENT) {	681	# for my $idx (0 .. $#PLUGIN_EVENT) {
557	# delete $hook[$idx]{$pkg};	682	# delete $hook[$idx]{$pkg};
558	# }	683	# }
559		684
560	# remove commands	685	# remove commands
561	for my $name (keys %command) {	686	for my $name (keys %COMMAND) {
562	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	687	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
563		688
564	if (@cb) {	689	if (@cb) {
565	$command{$name} = \@cb;	690	$COMMAND{$name} = \@cb;
566	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
567	} else {	691	} else {
568	delete $command{$name};
569	delete $COMMAND{"$name\000"};	692	delete $COMMAND{$name};
570	}	693	}
571	}	694	}
572		695
573	# remove extcmds	696	# remove extcmds
574	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	697	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
575	delete $extcmd{$name};	698	delete $EXTCMD{$name};
576	}	699	}
577		700
578	if (my $cb = $pkg->can ("unload")) {	701	if (my $cb = $pkg->can ("unload")) {
579	eval {	702	eval {
580	$cb->($pkg);	703	$cb->($pkg);
…		…
584		707
585	Symbol::delete_package $pkg;	708	Symbol::delete_package $pkg;
586	}	709	}
587		710
588	sub load_extensions {	711	sub load_extensions {
589	my $LIBDIR = maps_directory "perl";
590
591	for my $ext (<$LIBDIR/*.ext>) {	712	for my $ext (<$LIBDIR/*.ext>) {
592	next unless -r $ext;	713	next unless -r $ext;
593	eval {	714	eval {
594	load_extension $ext;	715	load_extension $ext;
595	1	716	1
596	} or warn "$ext not loaded: $@";	717	} or warn "$ext not loaded: $@";
597	}	718	}
598	}	719	}
599		720
600	sub _perl_reload(&) {
601	my ($msg) = @_;
602
603	$msg->("reloading...");
604
605	eval {
606	# 1. cancel all watchers
607	$_->cancel for Event::all_watchers;
608
609	# 2. unload all extensions
610	for (@exts) {
611	$msg->("unloading <$_>");
612	unload_extension $_;
613	}
614
615	# 3. unload all modules loaded from $LIBDIR
616	while (my ($k, $v) = each %INC) {
617	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
618
619	$msg->("removing <$k>");
620	delete $INC{$k};
621
622	$k =~ s/\.pm$//;
623	$k =~ s/\//::/g;
624
625	if (my $cb = $k->can ("unload_module")) {
626	$cb->();
627	}
628
629	Symbol::delete_package $k;
630	}
631
632	# 4. get rid of safe::, as good as possible
633	Symbol::delete_package "safe::$_"
634	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
635
636	# 5. remove register_script_function callbacks
637	# TODO
638
639	# 6. unload cf.pm "a bit"
640	delete $INC{"cf.pm"};
641
642	# don't, removes xs symbols, too,
643	# and global variables created in xs
644	#Symbol::delete_package __PACKAGE__;
645
646	# 7. reload cf.pm
647	$msg->("reloading cf.pm");
648	require cf;
649	};
650	$msg->($@) if $@;
651
652	$msg->("reloaded");
653	};
654
655	sub perl_reload() {
656	_perl_reload {
657	warn $_[0];
658	print "$_[0]\n";
659	};
660	}
661
662	register_command "perl-reload", 0, sub {
663	my ($who, $arg) = @_;
664
665	if ($who->flag (FLAG_WIZ)) {
666	_perl_reload {
667	warn $_[0];
668	$who->message ($_[0]);
669	};
670	}
671	};
672
673	#############################################################################
674	# extcmd framework, basically convert ext <msg>
675	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
676
677	attach_to_players
678	on_extcmd => sub {
679	my ($pl, $buf) = @_;
680
681	my $msg = eval { from_json $buf };
682
683	if (ref $msg) {
684	if (my $cb = $extcmd{$msg->{msgtype}}) {
685	if (my %reply = $cb->[0]->($pl, $msg)) {
686	$pl->ext_reply ($msg->{msgid}, %reply);
687	}
688	}
689	} else {
690	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
691	}
692
693	cf::override;
694	},
695	;
696
697	#############################################################################	721	#############################################################################
698	# load/save/clean perl data associated with a map	722	# load/save/clean perl data associated with a map
699		723
700	*cf::mapsupport::on_clean = sub {	724	*cf::mapsupport::on_clean = sub {
701	my ($map) = @_;	725	my ($map) = @_;
…		…
704	defined $path or return;	728	defined $path or return;
705		729
706	unlink "$path.pst";	730	unlink "$path.pst";
707	};	731	};
708		732
709	# old style persistent data, TODO: remove #d#
710	*cf::mapsupport::on_swapin =
711	*cf::mapsupport::on_load = sub {
712	my ($map) = @_;
713
714	my $path = $map->tmpname;
715	$path = $map->path unless defined $path;
716
717	open my $fh, "<:raw", "$path.cfperl"
718	or return; # no perl data
719
720	my $data = Storable::thaw do { local $/; <$fh> };
721
722	$data->{version} <= 1
723	or return; # too new
724
725	$map->_set_obs ($data->{obs});
726	$map->invoke (EVENT_MAP_UPGRADE);
727	};
728
729	attach_to_maps prio => -10000, package => cf::mapsupport::;	733	cf::map->attach (prio => -10000, package => cf::mapsupport::);
730		734
731	#############################################################################	735	#############################################################################
732	# load/save perl data associated with player->ob objects	736	# load/save perl data associated with player->ob objects
733		737
734	sub all_objects(@) {	738	sub all_objects(@) {
735	@_, map all_objects ($_->inv), @_	739	@_, map all_objects ($_->inv), @_
736	}	740	}
737		741
738	attach_to_players	742	# TODO: compatibility cruft, remove when no longer needed
		743	cf::player->attach (
739	on_load => sub {	744	on_load => sub {
740	my ($pl, $path) = @_;	745	my ($pl, $path) = @_;
741		746
742	for my $o (all_objects $pl->ob) {	747	for my $o (all_objects $pl->ob) {
743	if (my $value = $o->get_ob_key_value ("_perl_data")) {	748	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
745		750
746	%$o = %{ Storable::thaw pack "H*", $value };	751	%$o = %{ Storable::thaw pack "H*", $value };
747	}	752	}
748	}	753	}
749	},	754	},
750	;	755	);
751		756
752	#############################################################################	757	#############################################################################
753	# core extensions - in perl	758
		759	=head2 CORE EXTENSIONS
		760
		761	Functions and methods that extend core crossfire objects.
		762
		763	=head3 cf::player
		764
		765	=over 4
754		766
755	=item cf::player::exists $login	767	=item cf::player::exists $login
756		768
757	Returns true when the given account exists.	769	Returns true when the given account exists.
758		770
…		…
761	sub cf::player::exists($) {	773	sub cf::player::exists($) {
762	cf::player::find $_[0]	774	cf::player::find $_[0]
763	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	775	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
764	}	776	}
765		777
		778	=item $player->ext_reply ($msgid, $msgtype, %msg)
		779
		780	Sends an ext reply to the player.
		781
		782	=cut
		783
		784	sub cf::player::ext_reply($$$%) {
		785	my ($self, $id, %msg) = @_;
		786
		787	$msg{msgid} = $id;
		788
		789	$self->send ("ext " . to_json \%msg);
		790	}
		791
		792	=back
		793
		794	=head3 cf::object::player
		795
		796	=over 4
		797
766	=item $player->reply ($npc, $msg[, $flags])	798	=item $player_object->reply ($npc, $msg[, $flags])
767		799
768	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	800	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
769	can be C<undef>. Does the right thing when the player is currently in a	801	can be C<undef>. Does the right thing when the player is currently in a
770	dialogue with the given NPC character.	802	dialogue with the given NPC character.
771		803
772	=cut	804	=cut
773		805
774	# rough implementation of a future "reply" method that works	806	# rough implementation of a future "reply" method that works
775	# with dialog boxes.	807	# with dialog boxes.
		808	#TODO: the first argument must go, split into a $npc->reply_to ( method
776	sub cf::object::player::reply($$$;$) {	809	sub cf::object::player::reply($$$;$) {
777	my ($self, $npc, $msg, $flags) = @_;	810	my ($self, $npc, $msg, $flags) = @_;
778		811
779	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	812	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
780		813
…		…
784	$msg = $npc->name . " says: $msg" if $npc;	817	$msg = $npc->name . " says: $msg" if $npc;
785	$self->message ($msg, $flags);	818	$self->message ($msg, $flags);
786	}	819	}
787	}	820	}
788		821
789	=item $player->ext_reply ($msgid, $msgtype, %msg)	822	=item $player_object->may ("access")
790		823
791	Sends an ext reply to the player.	824	Returns wether the given player is authorized to access resource "access"
		825	(e.g. "command_wizcast").
792		826
793	=cut	827	=cut
794		828
795	sub cf::player::ext_reply($$$%) {	829	sub cf::object::player::may {
796	my ($self, $id, %msg) = @_;	830	my ($self, $access) = @_;
797		831
798	$msg{msgid} = $id;	832	$self->flag (cf::FLAG_WIZ) ||
799		833	(ref $cf::CFG{"may_$access"}
800	$self->send ("ext " . to_json \%msg);	834	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		835	: $cf::CFG{"may_$access"})
801	}	836	}
802		837
803	#############################################################################	838	=head3 cf::client
804	# map scripting support	839
		840	=over 4
		841
		842	=item $client->send_drawinfo ($text, $flags)
		843
		844	Sends a drawinfo packet to the client. Circumvents output buffering so
		845	should not be used under normal circumstances.
		846
		847	=cut
		848
		849	sub cf::client::send_drawinfo {
		850	my ($self, $text, $flags) = @_;
		851
		852	utf8::encode $text;
		853	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		854	}
		855
		856
		857	=item $success = $client->query ($flags, "text", \&cb)
		858
		859	Queues a query to the client, calling the given callback with
		860	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		861	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		862
		863	Queries can fail, so check the return code. Or don't, as queries will become
		864	reliable at some point in the future.
		865
		866	=cut
		867
		868	sub cf::client::query {
		869	my ($self, $flags, $text, $cb) = @_;
		870
		871	return unless $self->state == ST_PLAYING
		872	|| $self->state == ST_SETUP
		873	|| $self->state == ST_CUSTOM;
		874
		875	$self->state (ST_CUSTOM);
		876
		877	utf8::encode $text;
		878	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		879
		880	$self->send_packet ($self->{query_queue}[0][0])
		881	if @{ $self->{query_queue} } == 1;
		882	}
		883
		884	cf::client->attach (
		885	on_reply => sub {
		886	my ($ns, $msg) = @_;
		887
		888	# this weird shuffling is so that direct followup queries
		889	# get handled first
		890	my $queue = delete $ns->{query_queue};
		891
		892	(shift @$queue)->[1]->($msg);
		893
		894	push @{ $ns->{query_queue} }, @$queue;
		895
		896	if (@{ $ns->{query_queue} } == @$queue) {
		897	if (@$queue) {
		898	$ns->send_packet ($ns->{query_queue}[0][0]);
		899	} else {
		900	$ns->state (ST_PLAYING);
		901	}
		902	}
		903	},
		904	);
		905
		906	=back
		907
		908
		909	=head2 SAFE SCRIPTING
		910
		911	Functions that provide a safe environment to compile and execute
		912	snippets of perl code without them endangering the safety of the server
		913	itself. Looping constructs, I/O operators and other built-in functionality
		914	is not available in the safe scripting environment, and the number of
		915	functions and methods that can be called is greatly reduced.
		916
		917	=cut
805		918
806	our $safe = new Safe "safe";	919	our $safe = new Safe "safe";
807	our $safe_hole = new Safe::Hole;	920	our $safe_hole = new Safe::Hole;
808		921
809	$SIG{FPE} = 'IGNORE';	922	$SIG{FPE} = 'IGNORE';
810		923
811	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	924	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
812		925
813	# here we export the classes and methods available to script code	926	# here we export the classes and methods available to script code
814		927
		928	=pod
		929
		930	The following fucntions and emthods are available within a safe environment:
		931
		932	cf::object contr pay_amount pay_player map
		933	cf::object::player player
		934	cf::player peaceful
		935	cf::map trigger
		936
		937	=cut
		938
815	for (	939	for (
816	["cf::object" => qw(contr pay_amount pay_player)],	940	["cf::object" => qw(contr pay_amount pay_player map)],
817	["cf::object::player" => qw(player)],	941	["cf::object::player" => qw(player)],
818	["cf::player" => qw(peaceful)],	942	["cf::player" => qw(peaceful)],
		943	["cf::map" => qw(trigger)],
819	) {	944	) {
820	no strict 'refs';	945	no strict 'refs';
821	my ($pkg, @funs) = @$_;	946	my ($pkg, @funs) = @$_;
822	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	947	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
823	for @funs;	948	for @funs;
824	}	949	}
		950
		951	=over 4
		952
		953	=item @retval = safe_eval $code, [var => value, ...]
		954
		955	Compiled and executes the given perl code snippet. additional var/value
		956	pairs result in temporary local (my) scalar variables of the given name
		957	that are available in the code snippet. Example:
		958
		959	my $five = safe_eval '$first + $second', first => 1, second => 4;
		960
		961	=cut
825		962
826	sub safe_eval($;@) {	963	sub safe_eval($;@) {
827	my ($code, %vars) = @_;	964	my ($code, %vars) = @_;
828		965
829	my $qcode = $code;	966	my $qcode = $code;
…		…
852	}	989	}
853		990
854	wantarray ? @res : $res[0]	991	wantarray ? @res : $res[0]
855	}	992	}
856		993
		994	=item cf::register_script_function $function => $cb
		995
		996	Register a function that can be called from within map/npc scripts. The
		997	function should be reasonably secure and should be put into a package name
		998	like the extension.
		999
		1000	Example: register a function that gets called whenever a map script calls
		1001	C<rent::overview>, as used by the C<rent> extension.
		1002
		1003	cf::register_script_function "rent::overview" => sub {
		1004	...
		1005	};
		1006
		1007	=cut
		1008
857	sub register_script_function {	1009	sub register_script_function {
858	my ($fun, $cb) = @_;	1010	my ($fun, $cb) = @_;
859		1011
860	no strict 'refs';	1012	no strict 'refs';
861	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1013	*{"safe::$fun"} = $safe_hole->wrap ($cb);
862	}	1014	}
863		1015
		1016	=back
		1017
		1018	=cut
		1019
		1020	#############################################################################
		1021
		1022	=head2 EXTENSION DATABASE SUPPORT
		1023
		1024	Crossfire maintains a very simple database for extension use. It can
		1025	currently store anything that can be serialised using Storable, which
		1026	excludes objects.
		1027
		1028	The parameter C<$family> should best start with the name of the extension
		1029	using it, it should be unique.
		1030
		1031	=over 4
		1032
		1033	=item $hashref = cf::db_get $family
		1034
		1035	Return a hashref for use by the extension C<$family>, which can be
		1036	modified. After modifications, you have to call C<cf::db_dirty> or
		1037	C<cf::db_sync>.
		1038
		1039	=item $value = cf::db_get $family => $key
		1040
		1041	Returns a single value from the database
		1042
		1043	=item cf::db_put $family => $hashref
		1044
		1045	Stores the given family hashref into the database. Updates are delayed, if
		1046	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1047
		1048	=item cf::db_put $family => $key => $value
		1049
		1050	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1051	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1052
		1053	=item cf::db_dirty
		1054
		1055	Marks the database as dirty, to be updated at a later time.
		1056
		1057	=item cf::db_sync
		1058
		1059	Immediately write the database to disk I<if it is dirty>.
		1060
		1061	=cut
		1062
		1063	our $DB;
		1064
		1065	{
		1066	my $path = cf::localdir . "/database.pst";
		1067
		1068	sub db_load() {
		1069	warn "loading database $path\n";#d# remove later
		1070	$DB = stat $path ? Storable::retrieve $path : { };
		1071	}
		1072
		1073	my $pid;
		1074
		1075	sub db_save() {
		1076	warn "saving database $path\n";#d# remove later
		1077	waitpid $pid, 0 if $pid;
		1078	if (0 == ($pid = fork)) {
		1079	$DB->{_meta}{version} = 1;
		1080	Storable::nstore $DB, "$path~";
		1081	rename "$path~", $path;
		1082	cf::_exit 0 if defined $pid;
		1083	}
		1084	}
		1085
		1086	my $dirty;
		1087
		1088	sub db_sync() {
		1089	db_save if $dirty;
		1090	undef $dirty;
		1091	}
		1092
		1093	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1094	db_sync;
		1095	});
		1096
		1097	sub db_dirty() {
		1098	$dirty = 1;
		1099	$idle->start;
		1100	}
		1101
		1102	sub db_get($;$) {
		1103	@_ >= 2
		1104	? $DB->{$_[0]}{$_[1]}
		1105	: ($DB->{$_[0]} ||= { })
		1106	}
		1107
		1108	sub db_put($$;$) {
		1109	if (@_ >= 3) {
		1110	$DB->{$_[0]}{$_[1]} = $_[2];
		1111	} else {
		1112	$DB->{$_[0]} = $_[1];
		1113	}
		1114	db_dirty;
		1115	}
		1116
		1117	cf::global->attach (
		1118	prio => 10000,
		1119	on_cleanup => sub {
		1120	db_sync;
		1121	},
		1122	);
		1123	}
		1124
864	#############################################################################	1125	#############################################################################
865	# the server's main()	1126	# the server's main()
866		1127
		1128	sub cfg_load {
		1129	open my $fh, "<:utf8", cf::confdir . "/config"
		1130	or return;
		1131
		1132	local $/;
		1133	*CFG = YAML::Syck::Load <$fh>;
		1134	}
		1135
867	sub main {	1136	sub main {
		1137	cfg_load;
		1138	db_load;
		1139	load_extensions;
868	Event::loop;	1140	Event::loop;
869	}	1141	}
870		1142
871	#############################################################################	1143	#############################################################################
872	# initialisation	1144	# initialisation
873		1145
		1146	sub _perl_reload(&) {
		1147	my ($msg) = @_;
		1148
		1149	$msg->("reloading...");
		1150
		1151	eval {
		1152	# cancel all watchers
		1153	for (Event::all_watchers) {
		1154	$_->cancel if $_->data & WF_AUTOCANCEL;
		1155	}
		1156
		1157	# unload all extensions
		1158	for (@exts) {
		1159	$msg->("unloading <$_>");
		1160	unload_extension $_;
		1161	}
		1162
		1163	# unload all modules loaded from $LIBDIR
		1164	while (my ($k, $v) = each %INC) {
		1165	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1166
		1167	$msg->("removing <$k>");
		1168	delete $INC{$k};
		1169
		1170	$k =~ s/\.pm$//;
		1171	$k =~ s/\//::/g;
		1172
		1173	if (my $cb = $k->can ("unload_module")) {
		1174	$cb->();
		1175	}
		1176
		1177	Symbol::delete_package $k;
		1178	}
		1179
		1180	# sync database to disk
		1181	cf::db_sync;
		1182
		1183	# get rid of safe::, as good as possible
		1184	Symbol::delete_package "safe::$_"
		1185	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1186
		1187	# remove register_script_function callbacks
		1188	# TODO
		1189
		1190	# unload cf.pm "a bit"
		1191	delete $INC{"cf.pm"};
		1192
		1193	# don't, removes xs symbols, too,
		1194	# and global variables created in xs
		1195	#Symbol::delete_package __PACKAGE__;
		1196
		1197	# reload cf.pm
		1198	$msg->("reloading cf.pm");
		1199	require cf;
		1200
		1201	# load config and database again
		1202	cf::cfg_load;
		1203	cf::db_load;
		1204
		1205	# load extensions
		1206	$msg->("load extensions");
		1207	cf::load_extensions;
		1208
		1209	# reattach attachments to objects
		1210	$msg->("reattach");
		1211	_global_reattach;
		1212	};
		1213	$msg->($@) if $@;
		1214
		1215	$msg->("reloaded");
		1216	};
		1217
		1218	sub perl_reload() {
		1219	_perl_reload {
		1220	warn $_[0];
		1221	print "$_[0]\n";
		1222	};
		1223	}
		1224
874	register "<global>", __PACKAGE__;	1225	register "<global>", __PACKAGE__;
875		1226
		1227	register_command "perl-reload" => sub {
		1228	my ($who, $arg) = @_;
		1229
		1230	if ($who->flag (FLAG_WIZ)) {
		1231	_perl_reload {
		1232	warn $_[0];
		1233	$who->message ($_[0]);
		1234	};
		1235	}
		1236	};
		1237
876	unshift @INC, $LIBDIR;	1238	unshift @INC, $LIBDIR;
877		1239
878	load_extensions;
879
880	$TICK_WATCHER = Event->timer (	1240	$TICK_WATCHER = Event->timer (
881	prio => 1,	1241	prio => 0,
882	at => $NEXT_TICK || 1,	1242	at => $NEXT_TICK || 1,
		1243	data => WF_AUTOCANCEL,
883	cb => sub {	1244	cb => sub {
884	cf::server_tick; # one server iteration	1245	cf::server_tick; # one server iteration
885		1246
886	my $NOW = Event::time;	1247	my $NOW = Event::time;
887	$NEXT_TICK += $TICK;	1248	$NEXT_TICK += $TICK;
888		1249
889	# if we are delayed by four ticks, skip them all	1250	# if we are delayed by four ticks or more, skip them all
890	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1251	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
891		1252
892	$TICK_WATCHER->at ($NEXT_TICK);	1253	$TICK_WATCHER->at ($NEXT_TICK);
893	$TICK_WATCHER->start;	1254	$TICK_WATCHER->start;
894	},	1255	},
895	);	1256	);
896		1257
897	_reload_2;	1258	IO::AIO::max_poll_time $TICK * 0.2;
		1259
		1260	Event->io (fd => IO::AIO::poll_fileno,
		1261	poll => 'r',
		1262	prio => 5,
		1263	data => WF_AUTOCANCEL,
		1264	cb => \&IO::AIO::poll_cb);
898		1265
899	1	1266	1
900		1267

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