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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.49 by root, Sun Aug 27 17:59:26 2006 UTC vs.
Revision 1.96 by root, Fri Dec 22 06:02:29 2006 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro;
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18
		19	use IO::AIO;
		20	use YAML::Syck ();
10	use Time::HiRes;	21	use Time::HiRes;
11	use Event;	22
12	$Event::Eval = 1; # no idea why this is required, but it is	23	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		24
14	use strict;	25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		26	$YAML::Syck::ImplicitUnicode = 1;
15		27
16	_reload_1;	28	$Coro::main->prio (Coro::PRIO_MIN);
17		29
		30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		31
18	our %COMMAND = ();	32	our %COMMAND = ();
		33	our %COMMAND_TIME = ();
		34	our %EXTCMD = ();
		35
		36	_init_vars;
		37
19	our @EVENT;	38	our @EVENT;
20	our %PROP_TYPE;	39	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		40
24	our $TICK = MAX_TIME * 1e-6;	41	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	42	our $TICK_WATCHER;
26	our $NEXT_TICK;	43	our $NEXT_TICK;
		44
		45	our %CFG;
		46
		47	our $UPTIME; $UPTIME ||= time;
		48
		49	#############################################################################
		50
		51	=head2 GLOBAL VARIABLES
		52
		53	=over 4
		54
		55	=item $cf::UPTIME
		56
		57	The timestamp of the server start (so not actually an uptime).
		58
		59	=item $cf::LIBDIR
		60
		61	The perl library directory, where extensions and cf-specific modules can
		62	be found. It will be added to C<@INC> automatically.
		63
		64	=item $cf::TICK
		65
		66	The interval between server ticks, in seconds.
		67
		68	=item %cf::CFG
		69
		70	Configuration for the server, loaded from C</etc/crossfire/config>, or
		71	from wherever your confdir points to.
		72
		73	=back
		74
		75	=cut
27		76
28	BEGIN {	77	BEGIN {
29	*CORE::GLOBAL::warn = sub {	78	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	79	my $msg = join "", @_;
31	$msg .= "\n"	80	$msg .= "\n"
…		…
34	print STDERR "cfperl: $msg";	83	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	84	LOG llevError, "cfperl: $msg";
36	};	85	};
37	}	86	}
38		87
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	88	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		89	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	90	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	91	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	92	@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';	93	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		94
75	# we bless all objects into (empty) derived classes to force a method lookup	95	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	96	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	97	for my $pkg (qw(
		98	cf::global
		99	cf::object cf::object::player
		100	cf::client cf::player
		101	cf::arch cf::living
		102	cf::map cf::party cf::region
		103	)) {
78	no strict 'refs';	104	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	105	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	106	}
81		107
82	$Event::DIED = sub {	108	$Event::DIED = sub {
…		…
84	};	110	};
85		111
86	my %ext_pkg;	112	my %ext_pkg;
87	my @exts;	113	my @exts;
88	my @hook;	114	my @hook;
89	my %command;
90	my %extcmd;
91		115
92	#############################################################################	116	=head2 UTILITY FUNCTIONS
93	# utility functions	117
		118	=over 4
		119
		120	=cut
94		121
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	122	use JSON::Syck (); # TODO# replace by JSON::PC once working
		123
		124	=item $ref = cf::from_json $json
		125
		126	Converts a JSON string into the corresponding perl data structure.
		127
		128	=cut
96		129
97	sub from_json($) {	130	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	131	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	132	JSON::Syck::Load $_[0]
100	}	133	}
101		134
		135	=item $json = cf::to_json $ref
		136
		137	Converts a perl data structure into its JSON representation.
		138
		139	=cut
		140
102	sub to_json($) {	141	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	142	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	143	JSON::Syck::Dump $_[0]
105	}	144	}
106		145
		146	=back
		147
		148	=cut
		149
107	#############################################################################	150	#############################################################################
108	# "new" plug-in system
109		151
		152	=head2 ATTACHABLE OBJECTS
		153
		154	Many objects in crossfire are so-called attachable objects. That means you can
		155	attach callbacks/event handlers (a collection of which is called an "attachment")
		156	to it. All such attachable objects support the following methods.
		157
		158	In the following description, CLASS can be any of C<global>, C<object>
		159	C<player>, C<client> or C<map> (i.e. the attachable objects in
		160	crossfire+).
		161
		162	=over 4
		163
110	=item $object->attach ($attachment, key => $value...)	164	=item $attachable->attach ($attachment, key => $value...)
111		165
112	Attach a pre-registered attachment to an object.	166	=item $attachable->detach ($attachment)
113		167
114	=item $player->attach ($attachment, key => $value...)	168	Attach/detach a pre-registered attachment to a specific object and give it
		169	the specified key/value pairs as arguments.
115		170
116	Attach a pre-registered attachment to a player.	171	Example, attach a minesweeper attachment to the given object, making it a
		172	10x10 minesweeper game:
117		173
118	=item $map->attach ($attachment, key => $value...) # not yet persistent	174	$obj->attach (minesweeper => width => 10, height => 10);
119		175
120	Attach a pre-registered attachment to a map.	176	=item $bool = $attachable->attached ($name)
121		177
122	=item cf::attach_global ...	178	Checks wether the named attachment is currently attached to the object.
123		179
124	Attach handlers for global events.	180	=item cf::CLASS->attach ...
125		181
126	This and all following C<attach_*>-functions expect any number of the	182	=item cf::CLASS->detach ...
127	following handler/hook descriptions:	183
		184	Define an anonymous attachment and attach it to all objects of the given
		185	CLASS. See the next function for an explanation of its arguments.
		186
		187	You can attach to global events by using the C<cf::global> class.
		188
		189	Example, log all player logins:
		190
		191	cf::player->attach (
		192	on_login => sub {
		193	my ($pl) = @_;
		194	...
		195	},
		196	);
		197
		198	Example, attach to the jeweler skill:
		199
		200	cf::object->attach (
		201	type => cf::SKILL,
		202	subtype => cf::SK_JEWELER,
		203	on_use_skill => sub {
		204	my ($sk, $ob, $part, $dir, $msg) = @_;
		205	...
		206	},
		207	);
		208
		209	=item cf::CLASS::attachment $name, ...
		210
		211	Register an attachment by C<$name> through which attachable objects of the
		212	given CLASS can refer to this attachment.
		213
		214	Some classes such as crossfire maps and objects can specify attachments
		215	that are attached at load/instantiate time, thus the need for a name.
		216
		217	These calls expect any number of the following handler/hook descriptions:
128		218
129	=over 4	219	=over 4
130		220
131	=item prio => $number	221	=item prio => $number
132		222
…		…
134	by another C<prio> setting). Lower priority handlers get executed	224	by another C<prio> setting). Lower priority handlers get executed
135	earlier. The default priority is C<0>, and many built-in handlers are	225	earlier. The default priority is C<0>, and many built-in handlers are
136	registered at priority C<-1000>, so lower priorities should not be used	226	registered at priority C<-1000>, so lower priorities should not be used
137	unless you know what you are doing.	227	unless you know what you are doing.
138		228
		229	=item type => $type
		230
		231	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		232	given type of objects only (the additional parameter C<subtype> can be
		233	used to further limit to the given subtype).
		234
139	=item on_I<event> => \&cb	235	=item on_I<event> => \&cb
140		236
141	Call the given code reference whenever the named event happens (event is	237	Call the given code reference whenever the named event happens (event is
142	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	238	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
143	handlers are recognised generally depends on the type of object these	239	handlers are recognised generally depends on the type of object these
…		…
152	package and register them. Only handlers for eevents supported by the	248	package and register them. Only handlers for eevents supported by the
153	object/class are recognised.	249	object/class are recognised.
154		250
155	=back	251	=back
156		252
157	=item cf::attach_to_type $object_type, $subtype, ...	253	Example, define an attachment called "sockpuppet" that calls the given
		254	event handler when a monster attacks:
158		255
159	Attach handlers for a specific object type (e.g. TRANSPORT) and	256	cf::object::attachment sockpuppet =>
160	subtype. If C<$subtype> is zero or undef, matches all objects of the given	257	on_skill_attack => sub {
161	type.	258	my ($self, $victim) = @_;
		259	...
		260	}
		261	}
162		262
163	=item cf::attach_to_objects ...	263	=item $attachable->valid
164		264
165	Attach handlers to all objects. Do not use this except for debugging or	265	Just because you have a perl object does not mean that the corresponding
166	very rare events, as handlers are (obviously) called for I<all> objects in	266	C-level object still exists. If you try to access an object that has no
167	the game.	267	valid C counterpart anymore you get an exception at runtime. This method
168		268	can be used to test for existence of the C object part without causing an
169	=item cf::attach_to_players ...	269	exception.
170
171	Attach handlers to all players.
172
173	=item cf::attach_to_maps ...
174
175	Attach handlers to all maps.
176
177	=item cf:register_attachment $name, ...
178		270
179	=cut	271	=cut
180		272
181	# the following variables are defined in .xs and must not be re-created	273	# the following variables are defined in .xs and must not be re-created
182	our @CB_GLOBAL = (); # registry for all global events	274	our @CB_GLOBAL = (); # registry for all global events
183	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	275	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
184	our @CB_PLAYER = ();	276	our @CB_PLAYER = ();
		277	our @CB_CLIENT = ();
185	our @CB_TYPE = (); # registry for type (cf-object class) based events	278	our @CB_TYPE = (); # registry for type (cf-object class) based events
186	our @CB_MAP = ();	279	our @CB_MAP = ();
187		280
188	my %attachment;	281	my %attachment;
189		282
190	sub _attach_cb($\%$$$) {	283	sub _attach_cb($$$$) {
191	my ($registry, $undo, $event, $prio, $cb) = @_;	284	my ($registry, $event, $prio, $cb) = @_;
192		285
193	use sort 'stable';	286	use sort 'stable';
194		287
195	$cb = [$prio, $cb];	288	$cb = [$prio, $cb];
196		289
197	@{$registry->[$event]} = sort	290	@{$registry->[$event]} = sort
198	{ $a->[0] cmp $b->[0] }	291	{ $a->[0] cmp $b->[0] }
199	@{$registry->[$event] || []}, $cb;	292	@{$registry->[$event] || []}, $cb;
200
201	push @{$undo->{cb}}, [$event, $cb];
202	}	293	}
203		294
204	# attach handles attaching event callbacks	295	# attach handles attaching event callbacks
205	# the only thing the caller has to do is pass the correct	296	# the only thing the caller has to do is pass the correct
206	# registry (== where the callback attaches to).	297	# registry (== where the callback attaches to).
207	sub _attach(\@$@) {	298	sub _attach {
208	my ($registry, $klass, @arg) = @_;	299	my ($registry, $klass, @arg) = @_;
209		300
		301	my $object_type;
210	my $prio = 0;	302	my $prio = 0;
211
212	my %undo = (
213	registry => $registry,
214	cb => [],
215	);
216
217	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	303	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
218		304
219	while (@arg) {	305	while (@arg) {
220	my $type = shift @arg;	306	my $type = shift @arg;
221		307
222	if ($type eq "prio") {	308	if ($type eq "prio") {
223	$prio = shift @arg;	309	$prio = shift @arg;
224		310
		311	} elsif ($type eq "type") {
		312	$object_type = shift @arg;
		313	$registry = $CB_TYPE[$object_type] ||= [];
		314
		315	} elsif ($type eq "subtype") {
		316	defined $object_type or Carp::croak "subtype specified without type";
		317	my $object_subtype = shift @arg;
		318	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		319
225	} elsif ($type eq "package") {	320	} elsif ($type eq "package") {
226	my $pkg = shift @arg;	321	my $pkg = shift @arg;
227		322
228	while (my ($name, $id) = each %cb_id) {	323	while (my ($name, $id) = each %cb_id) {
229	if (my $cb = $pkg->can ($name)) {	324	if (my $cb = $pkg->can ($name)) {
230	_attach_cb $registry, %undo, $id, $prio, $cb;	325	_attach_cb $registry, $id, $prio, $cb;
231	}	326	}
232	}	327	}
233		328
234	} elsif (exists $cb_id{$type}) {	329	} elsif (exists $cb_id{$type}) {
235	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	330	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
236		331
237	} elsif (ref $type) {	332	} elsif (ref $type) {
238	warn "attaching objects not supported, ignoring.\n";	333	warn "attaching objects not supported, ignoring.\n";
239		334
240	} else {	335	} else {
241	shift @arg;	336	shift @arg;
242	warn "attach argument '$type' not supported, ignoring.\n";	337	warn "attach argument '$type' not supported, ignoring.\n";
243	}	338	}
244	}	339	}
245
246	\%undo
247	}	340	}
248		341
249	sub _attach_attachment {	342	sub _object_attach {
250	my ($obj, $name, %arg) = @_;	343	my ($obj, $name, %arg) = @_;
251		344
252	my $res;	345	return if exists $obj->{_attachment}{$name};
253		346
254	if (my $attach = $attachment{$name}) {	347	if (my $attach = $attachment{$name}) {
255	my $registry = $obj->registry;	348	my $registry = $obj->registry;
256		349
257	for (@$attach) {	350	for (@$attach) {
258	my ($klass, @attach) = @$_;	351	my ($klass, @attach) = @$_;
259	$res = _attach @$registry, $klass, @attach;	352	_attach $registry, $klass, @attach;
260	}	353	}
261		354
262	$obj->{$name} = \%arg;	355	$obj->{$name} = \%arg;
263	} else {	356	} else {
264	warn "object uses attachment '$name' that is not available, postponing.\n";	357	warn "object uses attachment '$name' that is not available, postponing.\n";
265	}	358	}
266		359
267	push @{$obj->{_attachment}}, $name;	360	$obj->{_attachment}{$name} = undef;
268
269	$res->{attachment} = $name;
270	$res
271	}	361	}
272		362
273	sub cf::object::attach {	363	sub cf::attachable::attach {
		364	if (ref $_[0]) {
		365	_object_attach @_;
		366	} else {
		367	_attach shift->_attach_registry, @_;
		368	}
		369	};
		370
		371	# all those should be optimised
		372	sub cf::attachable::detach {
274	my ($obj, $name, %arg) = @_;	373	my ($obj, $name) = @_;
275		374
276	_attach_attachment $obj, $name, %arg;	375	if (ref $obj) {
277	}	376	delete $obj->{_attachment}{$name};
		377	reattach ($obj);
		378	} else {
		379	Carp::croak "cannot, currently, detach class attachments";
		380	}
		381	};
278		382
279	sub cf::player::attach {	383	sub cf::attachable::attached {
280	my ($obj, $name, %arg) = @_;	384	my ($obj, $name) = @_;
281		385
282	_attach_attachment KLASS_PLAYER, $obj, $name, %arg;	386	exists $obj->{_attachment}{$name}
283	}	387	}
284		388
285	sub cf::map::attach {	389	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
286	my ($obj, $name, %arg) = @_;	390	eval "#line " . __LINE__ . " 'cf.pm'
		391	sub cf::\L$klass\E::_attach_registry {
		392	(\\\@CB_$klass, KLASS_$klass)
		393	}
287		394
288	_attach_attachment KLASS_MAP, $obj, $name, %arg;	395	sub cf::\L$klass\E::attachment {
289	}
290
291	sub attach_global {
292	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
293	}
294
295	sub attach_to_type {
296	my $type = shift;
297	my $subtype = shift;
298
299	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
300	}
301
302	sub attach_to_objects {
303	_attach @CB_OBJECT, KLASS_OBJECT, @_
304	}
305
306	sub attach_to_players {
307	_attach @CB_PLAYER, KLASS_PLAYER, @_
308	}
309
310	sub attach_to_maps {
311	_attach @CB_MAP, KLASS_MAP, @_
312	}
313
314	sub register_attachment {
315	my $name = shift;	396	my \$name = shift;
316		397
317	$attachment{$name} = [[KLASS_OBJECT, @_]];	398	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		399	}
		400	";
		401	die if $@;
318	}	402	}
319		403
320	our $override;	404	our $override;
321	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	405	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
322		406
…		…
336	for (@$callbacks) {	420	for (@$callbacks) {
337	eval { &{$_->[1]} };	421	eval { &{$_->[1]} };
338		422
339	if ($@) {	423	if ($@) {
340	warn "$@";	424	warn "$@";
341	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	425	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
342	override;	426	override;
343	}	427	}
344		428
345	return 1 if $override;	429	return 1 if $override;
346	}	430	}
347		431
348	0	432	0
349	}	433	}
		434
		435	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		436
		437	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		438
		439	Generate an object-specific event with the given arguments.
		440
		441	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		442	removed in future versions), and there is no public API to access override
		443	results (if you must, access C<@cf::invoke_results> directly).
		444
		445	=back
		446
		447	=cut
350		448
351	#############################################################################	449	#############################################################################
352	# object support	450	# object support
353		451
354	sub instantiate {	452	sub instantiate {
…		…
368	my ($obj) = @_;	466	my ($obj) = @_;
369	my $registry = $obj->registry;	467	my $registry = $obj->registry;
370		468
371	@$registry = ();	469	@$registry = ();
372		470
373	delete $obj->{_attachment} unless @{ $obj->{_attachment} || [] };	471	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
374		472
375	for my $name (@{ $obj->{_attachment} || [] }) {	473	for my $name (keys %{ $obj->{_attachment} || {} }) {
376	if (my $attach = $attachment{$name}) {	474	if (my $attach = $attachment{$name}) {
377	for (@$attach) {	475	for (@$attach) {
378	my ($klass, @attach) = @$_;	476	my ($klass, @attach) = @$_;
379	_attach @$registry, $klass, @attach;	477	_attach $registry, $klass, @attach;
380	}	478	}
381	} else {	479	} else {
382	warn "object uses attachment '$name' that is not available, postponing.\n";	480	warn "object uses attachment '$name' that is not available, postponing.\n";
383	}	481	}
384	}	482	}
385	}	483	}
386		484
387	sub object_freezer_save {	485	sub object_freezer_save {
388	my ($filename, $objs) = @_;	486	my ($filename, $rdata, $objs) = @_;
389		487
390	$filename .= ".pst";	488	if (length $$rdata) {
		489	warn sprintf "saving %s (%d,%d)\n",
		490	$filename, length $$rdata, scalar @$objs;
391		491
392	if (@$objs) {
393	open my $fh, ">:raw", "$filename~";	492	if (open my $fh, ">:raw", "$filename~") {
394	chmod $fh, SAVE_MODE;	493	chmod SAVE_MODE, $fh;
		494	syswrite $fh, $$rdata;
		495	close $fh;
		496
		497	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		498	chmod SAVE_MODE, $fh;
395	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	499	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
396	close $fh;	500	close $fh;
		501	rename "$filename.pst~", "$filename.pst";
		502	} else {
		503	unlink "$filename.pst";
		504	}
		505
397	rename "$filename~", $filename;	506	rename "$filename~", $filename;
		507	} else {
		508	warn "FATAL: $filename~: $!\n";
		509	}
398	} else {	510	} else {
399	unlink $filename;	511	unlink $filename;
		512	unlink "$filename.pst";
400	}	513	}
		514	}
		515
		516	sub object_freezer_as_string {
		517	my ($rdata, $objs) = @_;
		518
		519	use Data::Dumper;
		520
		521	$$rdata . Dumper $objs
401	}	522	}
402		523
403	sub object_thawer_load {	524	sub object_thawer_load {
404	my ($filename) = @_;	525	my ($filename) = @_;
405		526
		527	local $/;
		528
		529	my $av;
		530
		531	#TODO: use sysread etc.
		532	if (open my $data, "<:raw:perlio", $filename) {
		533	$data = <$data>;
406	open my $fh, "<:raw:perlio", "$filename.pst"	534	if (open my $pst, "<:raw:perlio", "$filename.pst") {
407	or return;	535	$av = eval { (Storable::thaw <$pst>)->{objs} };
		536	}
		537	return ($data, $av);
		538	}
408		539
409	eval { local $/; (Storable::thaw <$fh>)->{objs} }	540	()
410	}	541	}
411		542
412	attach_to_objects	543	cf::object->attach (
413	prio => -1000000,	544	prio => -1000000,
414	on_clone => sub {	545	on_clone => sub {
415	my ($src, $dst) = @_;	546	my ($src, $dst) = @_;
416		547
417	@{$dst->registry} = @{$src->registry};	548	@{$dst->registry} = @{$src->registry};
418		549
419	%$dst = %$src;	550	%$dst = %$src;
420		551
421	$dst->{_attachment} = [@{ $src->{_attachment} }]	552	%{$dst->{_attachment}} = %{$src->{_attachment}}
422	if exists $src->{_attachment};	553	if exists $src->{_attachment};
423	},	554	},
424	;	555	);
425		556
426	#############################################################################	557	#############################################################################
427	# old plug-in events	558	# command handling &c
428		559
429	sub inject_event {	560	=item cf::register_command $name => \&callback($ob,$args);
430	my $extension = shift;
431	my $event_code = shift;
432		561
433	my $cb = $hook[$event_code]{$extension}	562	Register a callback for execution when the client sends the user command
434	or return;	563	$name.
435		564
436	&$cb	565	=cut
437	}
438
439	sub inject_global_event {
440	my $event = shift;
441
442	my $cb = $hook[$event]
443	or return;
444
445	List::Util::max map &$_, values %$cb
446	}
447
448	sub inject_command {
449	my ($name, $obj, $params) = @_;
450
451	for my $cmd (@{ $command{$name} }) {
452	$cmd->[1]->($obj, $params);
453	}
454
455	-1
456	}
457		566
458	sub register_command {	567	sub register_command {
459	my ($name, $time, $cb) = @_;	568	my ($name, $cb) = @_;
460		569
461	my $caller = caller;	570	my $caller = caller;
462	#warn "registering command '$name/$time' to '$caller'";	571	#warn "registering command '$name/$time' to '$caller'";
463		572
464	push @{ $command{$name} }, [$time, $cb, $caller];	573	push @{ $COMMAND{$name} }, [$caller, $cb];
465	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
466	}	574	}
		575
		576	=item cf::register_extcmd $name => \&callback($pl,$packet);
		577
		578	Register a callbackf ro execution when the client sends an extcmd packet.
		579
		580	If the callback returns something, it is sent back as if reply was being
		581	called.
		582
		583	=cut
467		584
468	sub register_extcmd {	585	sub register_extcmd {
469	my ($name, $cb) = @_;	586	my ($name, $cb) = @_;
470		587
471	my $caller = caller;	588	my $caller = caller;
472	#warn "registering extcmd '$name' to '$caller'";	589	#warn "registering extcmd '$name' to '$caller'";
473		590
474	$extcmd{$name} = [$cb, $caller];	591	$EXTCMD{$name} = [$cb, $caller];
475	}	592	}
		593
		594	cf::player->attach (
		595	on_command => sub {
		596	my ($pl, $name, $params) = @_;
		597
		598	my $cb = $COMMAND{$name}
		599	or return;
		600
		601	for my $cmd (@$cb) {
		602	$cmd->[1]->($pl->ob, $params);
		603	}
		604
		605	cf::override;
		606	},
		607	on_extcmd => sub {
		608	my ($pl, $buf) = @_;
		609
		610	my $msg = eval { from_json $buf };
		611
		612	if (ref $msg) {
		613	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		614	if (my %reply = $cb->[0]->($pl, $msg)) {
		615	$pl->ext_reply ($msg->{msgid}, %reply);
		616	}
		617	}
		618	} else {
		619	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		620	}
		621
		622	cf::override;
		623	},
		624	);
476		625
477	sub register {	626	sub register {
478	my ($base, $pkg) = @_;	627	my ($base, $pkg) = @_;
479		628
480	#TODO	629	#TODO
…		…
499	. "#line 1 \"$path\"\n{\n"	648	. "#line 1 \"$path\"\n{\n"
500	. (do { local $/; <$fh> })	649	. (do { local $/; <$fh> })
501	. "\n};\n1";	650	. "\n};\n1";
502		651
503	eval $source	652	eval $source
504	or die "$path: $@";	653	or die $@ ? "$path: $@\n"
		654	: "extension disabled.\n";
505		655
506	push @exts, $pkg;	656	push @exts, $pkg;
507	$ext_pkg{$base} = $pkg;	657	$ext_pkg{$base} = $pkg;
508		658
509	# no strict 'refs';	659	# no strict 'refs';
…		…
522	# for my $idx (0 .. $#PLUGIN_EVENT) {	672	# for my $idx (0 .. $#PLUGIN_EVENT) {
523	# delete $hook[$idx]{$pkg};	673	# delete $hook[$idx]{$pkg};
524	# }	674	# }
525		675
526	# remove commands	676	# remove commands
527	for my $name (keys %command) {	677	for my $name (keys %COMMAND) {
528	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	678	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
529		679
530	if (@cb) {	680	if (@cb) {
531	$command{$name} = \@cb;	681	$COMMAND{$name} = \@cb;
532	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
533	} else {	682	} else {
534	delete $command{$name};
535	delete $COMMAND{"$name\000"};	683	delete $COMMAND{$name};
536	}	684	}
537	}	685	}
538		686
539	# remove extcmds	687	# remove extcmds
540	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	688	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
541	delete $extcmd{$name};	689	delete $EXTCMD{$name};
542	}	690	}
543		691
544	if (my $cb = $pkg->can ("unload")) {	692	if (my $cb = $pkg->can ("unload")) {
545	eval {	693	eval {
546	$cb->($pkg);	694	$cb->($pkg);
…		…
550		698
551	Symbol::delete_package $pkg;	699	Symbol::delete_package $pkg;
552	}	700	}
553		701
554	sub load_extensions {	702	sub load_extensions {
555	my $LIBDIR = maps_directory "perl";
556
557	for my $ext (<$LIBDIR/*.ext>) {	703	for my $ext (<$LIBDIR/*.ext>) {
558	next unless -r $ext;	704	next unless -r $ext;
559	eval {	705	eval {
560	load_extension $ext;	706	load_extension $ext;
561	1	707	1
562	} or warn "$ext not loaded: $@";	708	} or warn "$ext not loaded: $@";
563	}	709	}
564	}	710	}
565		711
566	sub _perl_reload(&) {
567	my ($msg) = @_;
568
569	$msg->("reloading...");
570
571	eval {
572	# 1. cancel all watchers
573	$_->cancel for Event::all_watchers;
574
575	# 2. unload all extensions
576	for (@exts) {
577	$msg->("unloading <$_>");
578	unload_extension $_;
579	}
580
581	# 3. unload all modules loaded from $LIBDIR
582	while (my ($k, $v) = each %INC) {
583	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
584
585	$msg->("removing <$k>");
586	delete $INC{$k};
587
588	$k =~ s/\.pm$//;
589	$k =~ s/\//::/g;
590
591	if (my $cb = $k->can ("unload_module")) {
592	$cb->();
593	}
594
595	Symbol::delete_package $k;
596	}
597
598	# 4. get rid of safe::, as good as possible
599	Symbol::delete_package "safe::$_"
600	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
601
602	# 5. remove register_script_function callbacks
603	# TODO
604
605	# 6. unload cf.pm "a bit"
606	delete $INC{"cf.pm"};
607
608	# don't, removes xs symbols, too,
609	# and global variables created in xs
610	#Symbol::delete_package __PACKAGE__;
611
612	# 7. reload cf.pm
613	$msg->("reloading cf.pm");
614	require cf;
615	};
616	$msg->($@) if $@;
617
618	$msg->("reloaded");
619	};
620
621	sub perl_reload() {
622	_perl_reload {
623	warn $_[0];
624	print "$_[0]\n";
625	};
626	}
627
628	register_command "perl-reload", 0, sub {
629	my ($who, $arg) = @_;
630
631	if ($who->flag (FLAG_WIZ)) {
632	_perl_reload {
633	warn $_[0];
634	$who->message ($_[0]);
635	};
636	}
637	};
638
639	#############################################################################
640	# extcmd framework, basically convert ext <msg>
641	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
642
643	attach_to_players
644	on_extcmd => sub {
645	my ($pl, $buf) = @_;
646
647	my $msg = eval { from_json $buf };
648
649	if (ref $msg) {
650	if (my $cb = $extcmd{$msg->{msgtype}}) {
651	if (my %reply = $cb->[0]->($pl, $msg)) {
652	$pl->ext_reply ($msg->{msgid}, %reply);
653	}
654	}
655	} else {
656	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
657	}
658
659	cf::override;
660	},
661	;
662
663	#############################################################################	712	#############################################################################
664	# load/save/clean perl data associated with a map	713	# load/save/clean perl data associated with a map
665		714
666	*cf::mapsupport::on_clean = sub {	715	*cf::mapsupport::on_clean = sub {
667	my ($map) = @_;	716	my ($map) = @_;
668		717
669	my $path = $map->tmpname;	718	my $path = $map->tmpname;
670	defined $path or return;	719	defined $path or return;
671		720
672	unlink "$path.cfperl";
673	unlink "$path.pst";	721	unlink "$path.pst";
674	};	722	};
675		723
676	*cf::mapsupport::on_swapin =
677	*cf::mapsupport::on_load = sub {
678	my ($map) = @_;
679
680	my $path = $map->tmpname;
681	$path = $map->path unless defined $path;
682
683	open my $fh, "<:raw", "$path.cfperl"
684	or return; # no perl data
685
686	my $data = Storable::thaw do { local $/; <$fh> };
687
688	$data->{version} <= 1
689	or return; # too new
690
691	$map->_set_obs ($data->{obs});
692	};
693
694	attach_to_maps prio => -10000, package => cf::mapsupport::;	724	cf::map->attach (prio => -10000, package => cf::mapsupport::);
695		725
696	#############################################################################	726	#############################################################################
697	# load/save perl data associated with player->ob objects	727	# load/save perl data associated with player->ob objects
698		728
699	sub all_objects(@) {	729	sub all_objects(@) {
700	@_, map all_objects ($_->inv), @_	730	@_, map all_objects ($_->inv), @_
701	}	731	}
702		732
703	attach_to_players	733	# TODO: compatibility cruft, remove when no longer needed
		734	cf::player->attach (
704	on_load => sub {	735	on_load => sub {
705	my ($pl, $path) = @_;	736	my ($pl, $path) = @_;
706		737
707	for my $o (all_objects $pl->ob) {	738	for my $o (all_objects $pl->ob) {
708	if (my $value = $o->get_ob_key_value ("_perl_data")) {	739	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
710		741
711	%$o = %{ Storable::thaw pack "H*", $value };	742	%$o = %{ Storable::thaw pack "H*", $value };
712	}	743	}
713	}	744	}
714	},	745	},
715	;	746	);
716		747
717	#############################################################################	748	#############################################################################
718	# core extensions - in perl	749
		750	=head2 CORE EXTENSIONS
		751
		752	Functions and methods that extend core crossfire objects.
		753
		754	=head3 cf::player
		755
		756	=over 4
719		757
720	=item cf::player::exists $login	758	=item cf::player::exists $login
721		759
722	Returns true when the given account exists.	760	Returns true when the given account exists.
723		761
…		…
726	sub cf::player::exists($) {	764	sub cf::player::exists($) {
727	cf::player::find $_[0]	765	cf::player::find $_[0]
728	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	766	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
729	}	767	}
730		768
		769	=item $player->ext_reply ($msgid, $msgtype, %msg)
		770
		771	Sends an ext reply to the player.
		772
		773	=cut
		774
		775	sub cf::player::ext_reply($$$%) {
		776	my ($self, $id, %msg) = @_;
		777
		778	$msg{msgid} = $id;
		779
		780	$self->send ("ext " . to_json \%msg);
		781	}
		782
		783	=back
		784
		785	=head3 cf::object::player
		786
		787	=over 4
		788
731	=item $player->reply ($npc, $msg[, $flags])	789	=item $player_object->reply ($npc, $msg[, $flags])
732		790
733	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
734	can be C<undef>. Does the right thing when the player is currently in a	792	can be C<undef>. Does the right thing when the player is currently in a
735	dialogue with the given NPC character.	793	dialogue with the given NPC character.
736		794
737	=cut	795	=cut
738		796
739	# rough implementation of a future "reply" method that works	797	# rough implementation of a future "reply" method that works
740	# with dialog boxes.	798	# with dialog boxes.
		799	#TODO: the first argument must go, split into a $npc->reply_to ( method
741	sub cf::object::player::reply($$$;$) {	800	sub cf::object::player::reply($$$;$) {
742	my ($self, $npc, $msg, $flags) = @_;	801	my ($self, $npc, $msg, $flags) = @_;
743		802
744	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	803	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
745		804
…		…
749	$msg = $npc->name . " says: $msg" if $npc;	808	$msg = $npc->name . " says: $msg" if $npc;
750	$self->message ($msg, $flags);	809	$self->message ($msg, $flags);
751	}	810	}
752	}	811	}
753		812
754	=item $player->ext_reply ($msgid, $msgtype, %msg)	813	=item $player_object->may ("access")
755		814
756	Sends an ext reply to the player.	815	Returns wether the given player is authorized to access resource "access"
		816	(e.g. "command_wizcast").
757		817
758	=cut	818	=cut
759		819
760	sub cf::player::ext_reply($$$%) {	820	sub cf::object::player::may {
		821	my ($self, $access) = @_;
		822
		823	$self->flag (cf::FLAG_WIZ) ||
		824	(ref $cf::CFG{"may_$access"}
		825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		826	: $cf::CFG{"may_$access"})
		827	}
		828
		829	=head3 cf::client
		830
		831	=over 4
		832
		833	=item $client->send_drawinfo ($text, $flags)
		834
		835	Sends a drawinfo packet to the client. Circumvents output buffering so
		836	should not be used under normal circumstances.
		837
		838	=cut
		839
		840	sub cf::client::send_drawinfo {
		841	my ($self, $text, $flags) = @_;
		842
		843	utf8::encode $text;
		844	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		845	}
		846
		847
		848	=item $success = $client->query ($flags, "text", \&cb)
		849
		850	Queues a query to the client, calling the given callback with
		851	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		852	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		853
		854	Queries can fail, so check the return code. Or don't, as queries will become
		855	reliable at some point in the future.
		856
		857	=cut
		858
		859	sub cf::client::query {
		860	my ($self, $flags, $text, $cb) = @_;
		861
		862	return unless $self->state == ST_PLAYING
		863	|| $self->state == ST_SETUP
		864	|| $self->state == ST_CUSTOM;
		865
		866	$self->state (ST_CUSTOM);
		867
		868	utf8::encode $text;
		869	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		870
		871	$self->send_packet ($self->{query_queue}[0][0])
		872	if @{ $self->{query_queue} } == 1;
		873	}
		874
		875	cf::client->attach (
		876	on_reply => sub {
		877	my ($ns, $msg) = @_;
		878
		879	# this weird shuffling is so that direct followup queries
		880	# get handled first
		881	my $queue = delete $ns->{query_queue};
		882
		883	(shift @$queue)->[1]->($msg);
		884
		885	push @{ $ns->{query_queue} }, @$queue;
		886
		887	if (@{ $ns->{query_queue} } == @$queue) {
		888	if (@$queue) {
		889	$ns->send_packet ($ns->{query_queue}[0][0]);
		890	} else {
		891	$ns->state (ST_PLAYING);
		892	}
		893	}
		894	},
		895	);
		896
		897	=item $client->coro (\&cb)
		898
		899	Create a new coroutine, running the specified callback. The coroutine will
		900	be automatically cancelled when the client gets destroyed (e.g. on logout,
		901	or loss of connection).
		902
		903	=cut
		904
		905	sub cf::client::coro {
761	my ($self, $id, %msg) = @_;	906	my ($self, $cb) = @_;
762		907
763	$msg{msgid} = $id;	908	my $coro; $coro = async {
		909	eval {
		910	$cb->();
		911	};
		912	warn $@ if $@;
		913	warn "cancel myself\n";#d#
		914	delete $self->{_coro}{$coro+0};
		915	};
764		916
765	$self->send ("ext " . to_json \%msg);	917	$self->{_coro}{$coro+0} = $coro;
766	}	918	}
767		919
768	#############################################################################	920	cf::client->attach (
769	# map scripting support	921	on_destroy => sub {
		922	my ($ns) = @_;
		923
		924	warn "cancel $_" for values %{ $ns->{_coro} || {} };#d#
		925	$_->cancel for values %{ $ns->{_coro} || {} };
		926	},
		927	);
		928
		929	=back
		930
		931
		932	=head2 SAFE SCRIPTING
		933
		934	Functions that provide a safe environment to compile and execute
		935	snippets of perl code without them endangering the safety of the server
		936	itself. Looping constructs, I/O operators and other built-in functionality
		937	is not available in the safe scripting environment, and the number of
		938	functions and methods that can be called is greatly reduced.
		939
		940	=cut
770		941
771	our $safe = new Safe "safe";	942	our $safe = new Safe "safe";
772	our $safe_hole = new Safe::Hole;	943	our $safe_hole = new Safe::Hole;
773		944
774	$SIG{FPE} = 'IGNORE';	945	$SIG{FPE} = 'IGNORE';
775		946
776	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	947	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
777		948
778	# here we export the classes and methods available to script code	949	# here we export the classes and methods available to script code
779		950
		951	=pod
		952
		953	The following fucntions and emthods are available within a safe environment:
		954
		955	cf::object contr pay_amount pay_player map
		956	cf::object::player player
		957	cf::player peaceful
		958	cf::map trigger
		959
		960	=cut
		961
780	for (	962	for (
781	["cf::object" => qw(contr pay_amount pay_player)],	963	["cf::object" => qw(contr pay_amount pay_player map)],
782	["cf::object::player" => qw(player)],	964	["cf::object::player" => qw(player)],
783	["cf::player" => qw(peaceful)],	965	["cf::player" => qw(peaceful)],
		966	["cf::map" => qw(trigger)],
784	) {	967	) {
785	no strict 'refs';	968	no strict 'refs';
786	my ($pkg, @funs) = @$_;	969	my ($pkg, @funs) = @$_;
787	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	970	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
788	for @funs;	971	for @funs;
789	}	972	}
		973
		974	=over 4
		975
		976	=item @retval = safe_eval $code, [var => value, ...]
		977
		978	Compiled and executes the given perl code snippet. additional var/value
		979	pairs result in temporary local (my) scalar variables of the given name
		980	that are available in the code snippet. Example:
		981
		982	my $five = safe_eval '$first + $second', first => 1, second => 4;
		983
		984	=cut
790		985
791	sub safe_eval($;@) {	986	sub safe_eval($;@) {
792	my ($code, %vars) = @_;	987	my ($code, %vars) = @_;
793		988
794	my $qcode = $code;	989	my $qcode = $code;
…		…
817	}	1012	}
818		1013
819	wantarray ? @res : $res[0]	1014	wantarray ? @res : $res[0]
820	}	1015	}
821		1016
		1017	=item cf::register_script_function $function => $cb
		1018
		1019	Register a function that can be called from within map/npc scripts. The
		1020	function should be reasonably secure and should be put into a package name
		1021	like the extension.
		1022
		1023	Example: register a function that gets called whenever a map script calls
		1024	C<rent::overview>, as used by the C<rent> extension.
		1025
		1026	cf::register_script_function "rent::overview" => sub {
		1027	...
		1028	};
		1029
		1030	=cut
		1031
822	sub register_script_function {	1032	sub register_script_function {
823	my ($fun, $cb) = @_;	1033	my ($fun, $cb) = @_;
824		1034
825	no strict 'refs';	1035	no strict 'refs';
826	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1036	*{"safe::$fun"} = $safe_hole->wrap ($cb);
827	}	1037	}
828		1038
		1039	=back
		1040
		1041	=cut
		1042
		1043	#############################################################################
		1044
		1045	=head2 EXTENSION DATABASE SUPPORT
		1046
		1047	Crossfire maintains a very simple database for extension use. It can
		1048	currently store anything that can be serialised using Storable, which
		1049	excludes objects.
		1050
		1051	The parameter C<$family> should best start with the name of the extension
		1052	using it, it should be unique.
		1053
		1054	=over 4
		1055
		1056	=item $hashref = cf::db_get $family
		1057
		1058	Return a hashref for use by the extension C<$family>, which can be
		1059	modified. After modifications, you have to call C<cf::db_dirty> or
		1060	C<cf::db_sync>.
		1061
		1062	=item $value = cf::db_get $family => $key
		1063
		1064	Returns a single value from the database
		1065
		1066	=item cf::db_put $family => $hashref
		1067
		1068	Stores the given family hashref into the database. Updates are delayed, if
		1069	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1070
		1071	=item cf::db_put $family => $key => $value
		1072
		1073	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1074	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1075
		1076	=item cf::db_dirty
		1077
		1078	Marks the database as dirty, to be updated at a later time.
		1079
		1080	=item cf::db_sync
		1081
		1082	Immediately write the database to disk I<if it is dirty>.
		1083
		1084	=cut
		1085
		1086	our $DB;
		1087
		1088	{
		1089	my $path = cf::localdir . "/database.pst";
		1090
		1091	sub db_load() {
		1092	warn "loading database $path\n";#d# remove later
		1093	$DB = stat $path ? Storable::retrieve $path : { };
		1094	}
		1095
		1096	my $pid;
		1097
		1098	sub db_save() {
		1099	warn "saving database $path\n";#d# remove later
		1100	waitpid $pid, 0 if $pid;
		1101	if (0 == ($pid = fork)) {
		1102	$DB->{_meta}{version} = 1;
		1103	Storable::nstore $DB, "$path~";
		1104	rename "$path~", $path;
		1105	cf::_exit 0 if defined $pid;
		1106	}
		1107	}
		1108
		1109	my $dirty;
		1110
		1111	sub db_sync() {
		1112	db_save if $dirty;
		1113	undef $dirty;
		1114	}
		1115
		1116	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1117	db_sync;
		1118	});
		1119
		1120	sub db_dirty() {
		1121	$dirty = 1;
		1122	$idle->start;
		1123	}
		1124
		1125	sub db_get($;$) {
		1126	@_ >= 2
		1127	? $DB->{$_[0]}{$_[1]}
		1128	: ($DB->{$_[0]} ||= { })
		1129	}
		1130
		1131	sub db_put($$;$) {
		1132	if (@_ >= 3) {
		1133	$DB->{$_[0]}{$_[1]} = $_[2];
		1134	} else {
		1135	$DB->{$_[0]} = $_[1];
		1136	}
		1137	db_dirty;
		1138	}
		1139
		1140	cf::global->attach (
		1141	prio => 10000,
		1142	on_cleanup => sub {
		1143	db_sync;
		1144	},
		1145	);
		1146	}
		1147
829	#############################################################################	1148	#############################################################################
830	# the server's main()	1149	# the server's main()
831		1150
		1151	sub cfg_load {
		1152	open my $fh, "<:utf8", cf::confdir . "/config"
		1153	or return;
		1154
		1155	local $/;
		1156	*CFG = YAML::Syck::Load <$fh>;
		1157	}
		1158
832	sub main {	1159	sub main {
		1160	cfg_load;
		1161	db_load;
		1162	load_extensions;
833	Event::loop;	1163	Event::loop;
834	}	1164	}
835		1165
836	#############################################################################	1166	#############################################################################
837	# initialisation	1167	# initialisation
838		1168
		1169	sub _perl_reload(&) {
		1170	my ($msg) = @_;
		1171
		1172	$msg->("reloading...");
		1173
		1174	eval {
		1175	# cancel all watchers
		1176	for (Event::all_watchers) {
		1177	$_->cancel if $_->data & WF_AUTOCANCEL;
		1178	}
		1179
		1180	# unload all extensions
		1181	for (@exts) {
		1182	$msg->("unloading <$_>");
		1183	unload_extension $_;
		1184	}
		1185
		1186	# unload all modules loaded from $LIBDIR
		1187	while (my ($k, $v) = each %INC) {
		1188	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1189
		1190	$msg->("removing <$k>");
		1191	delete $INC{$k};
		1192
		1193	$k =~ s/\.pm$//;
		1194	$k =~ s/\//::/g;
		1195
		1196	if (my $cb = $k->can ("unload_module")) {
		1197	$cb->();
		1198	}
		1199
		1200	Symbol::delete_package $k;
		1201	}
		1202
		1203	# sync database to disk
		1204	cf::db_sync;
		1205
		1206	# get rid of safe::, as good as possible
		1207	Symbol::delete_package "safe::$_"
		1208	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1209
		1210	# remove register_script_function callbacks
		1211	# TODO
		1212
		1213	# unload cf.pm "a bit"
		1214	delete $INC{"cf.pm"};
		1215
		1216	# don't, removes xs symbols, too,
		1217	# and global variables created in xs
		1218	#Symbol::delete_package __PACKAGE__;
		1219
		1220	# reload cf.pm
		1221	$msg->("reloading cf.pm");
		1222	require cf;
		1223
		1224	# load config and database again
		1225	cf::cfg_load;
		1226	cf::db_load;
		1227
		1228	# load extensions
		1229	$msg->("load extensions");
		1230	cf::load_extensions;
		1231
		1232	# reattach attachments to objects
		1233	$msg->("reattach");
		1234	_global_reattach;
		1235	};
		1236	$msg->($@) if $@;
		1237
		1238	$msg->("reloaded");
		1239	};
		1240
		1241	sub perl_reload() {
		1242	_perl_reload {
		1243	warn $_[0];
		1244	print "$_[0]\n";
		1245	};
		1246	}
		1247
839	register "<global>", __PACKAGE__;	1248	register "<global>", __PACKAGE__;
840		1249
		1250	register_command "perl-reload" => sub {
		1251	my ($who, $arg) = @_;
		1252
		1253	if ($who->flag (FLAG_WIZ)) {
		1254	_perl_reload {
		1255	warn $_[0];
		1256	$who->message ($_[0]);
		1257	};
		1258	}
		1259	};
		1260
841	unshift @INC, $LIBDIR;	1261	unshift @INC, $LIBDIR;
842		1262
843	load_extensions;
844
845	$TICK_WATCHER = Event->timer (	1263	$TICK_WATCHER = Event->timer (
846	prio => 1,	1264	prio => 0,
847	at => $NEXT_TICK || 1,	1265	at => $NEXT_TICK || 1,
		1266	data => WF_AUTOCANCEL,
848	cb => sub {	1267	cb => sub {
849	cf::server_tick; # one server iteration	1268	cf::server_tick; # one server iteration
850		1269
851	my $NOW = Event::time;	1270	my $NOW = Event::time;
852	$NEXT_TICK += $TICK;	1271	$NEXT_TICK += $TICK;
853		1272
854	# if we are delayed by four ticks, skip them all	1273	# if we are delayed by four ticks or more, skip them all
855	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1274	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
856		1275
857	$TICK_WATCHER->at ($NEXT_TICK);	1276	$TICK_WATCHER->at ($NEXT_TICK);
858	$TICK_WATCHER->start;	1277	$TICK_WATCHER->start;
859	},	1278	},
860	);	1279	);
861		1280
862	_reload_2;	1281	IO::AIO::max_poll_time $TICK * 0.2;
		1282
		1283	Event->io (fd => IO::AIO::poll_fileno,
		1284	poll => 'r',
		1285	prio => 5,
		1286	data => WF_AUTOCANCEL,
		1287	cb => \&IO::AIO::poll_cb);
863		1288
864	1	1289	1
865		1290

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