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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.52 by root, Mon Aug 28 16:52:51 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 cf::living)) {	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
179	Register an attachment by name through which objects can refer to this
180	attachment.
181
182	=item cf:register_map_attachment $name, ...
183
184	Register an attachment by name through which maps can refer to this
185	attachment.
186		270
187	=cut	271	=cut
188		272
189	# the following variables are defined in .xs and must not be re-created	273	# the following variables are defined in .xs and must not be re-created
190	our @CB_GLOBAL = (); # registry for all global events	274	our @CB_GLOBAL = (); # registry for all global events
191	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	275	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
192	our @CB_PLAYER = ();	276	our @CB_PLAYER = ();
		277	our @CB_CLIENT = ();
193	our @CB_TYPE = (); # registry for type (cf-object class) based events	278	our @CB_TYPE = (); # registry for type (cf-object class) based events
194	our @CB_MAP = ();	279	our @CB_MAP = ();
195		280
196	my %attachment;	281	my %attachment;
197		282
198	sub _attach_cb($\%$$$) {	283	sub _attach_cb($$$$) {
199	my ($registry, $undo, $event, $prio, $cb) = @_;	284	my ($registry, $event, $prio, $cb) = @_;
200		285
201	use sort 'stable';	286	use sort 'stable';
202		287
203	$cb = [$prio, $cb];	288	$cb = [$prio, $cb];
204		289
205	@{$registry->[$event]} = sort	290	@{$registry->[$event]} = sort
206	{ $a->[0] cmp $b->[0] }	291	{ $a->[0] cmp $b->[0] }
207	@{$registry->[$event] || []}, $cb;	292	@{$registry->[$event] || []}, $cb;
208
209	push @{$undo->{cb}}, [$event, $cb];
210	}	293	}
211		294
212	# attach handles attaching event callbacks	295	# attach handles attaching event callbacks
213	# 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
214	# registry (== where the callback attaches to).	297	# registry (== where the callback attaches to).
215	sub _attach(\@$@) {	298	sub _attach {
216	my ($registry, $klass, @arg) = @_;	299	my ($registry, $klass, @arg) = @_;
217		300
		301	my $object_type;
218	my $prio = 0;	302	my $prio = 0;
219
220	my %undo = (
221	registry => $registry,
222	cb => [],
223	);
224
225	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;
226		304
227	while (@arg) {	305	while (@arg) {
228	my $type = shift @arg;	306	my $type = shift @arg;
229		307
230	if ($type eq "prio") {	308	if ($type eq "prio") {
231	$prio = shift @arg;	309	$prio = shift @arg;
232		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
233	} elsif ($type eq "package") {	320	} elsif ($type eq "package") {
234	my $pkg = shift @arg;	321	my $pkg = shift @arg;
235		322
236	while (my ($name, $id) = each %cb_id) {	323	while (my ($name, $id) = each %cb_id) {
237	if (my $cb = $pkg->can ($name)) {	324	if (my $cb = $pkg->can ($name)) {
238	_attach_cb $registry, %undo, $id, $prio, $cb;	325	_attach_cb $registry, $id, $prio, $cb;
239	}	326	}
240	}	327	}
241		328
242	} elsif (exists $cb_id{$type}) {	329	} elsif (exists $cb_id{$type}) {
243	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	330	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
244		331
245	} elsif (ref $type) {	332	} elsif (ref $type) {
246	warn "attaching objects not supported, ignoring.\n";	333	warn "attaching objects not supported, ignoring.\n";
247		334
248	} else {	335	} else {
249	shift @arg;	336	shift @arg;
250	warn "attach argument '$type' not supported, ignoring.\n";	337	warn "attach argument '$type' not supported, ignoring.\n";
251	}	338	}
252	}	339	}
253
254	\%undo
255	}	340	}
256		341
257	sub _attach_attachment {	342	sub _object_attach {
258	my ($obj, $name, %arg) = @_;	343	my ($obj, $name, %arg) = @_;
259		344
260	my $res;	345	return if exists $obj->{_attachment}{$name};
261		346
262	if (my $attach = $attachment{$name}) {	347	if (my $attach = $attachment{$name}) {
263	my $registry = $obj->registry;	348	my $registry = $obj->registry;
264		349
265	for (@$attach) {	350	for (@$attach) {
266	my ($klass, @attach) = @$_;	351	my ($klass, @attach) = @$_;
267	$res = _attach @$registry, $klass, @attach;	352	_attach $registry, $klass, @attach;
268	}	353	}
269		354
270	$obj->{$name} = \%arg;	355	$obj->{$name} = \%arg;
271	} else {	356	} else {
272	warn "object uses attachment '$name' that is not available, postponing.\n";	357	warn "object uses attachment '$name' that is not available, postponing.\n";
273	}	358	}
274		359
275	$obj->{_attachment}{$name} = undef;	360	$obj->{_attachment}{$name} = undef;
276
277	$res->{attachment} = $name;
278	$res
279	}	361	}
280		362
281	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 {
282	my ($obj, $name, %arg) = @_;	373	my ($obj, $name) = @_;
283		374
284	_attach_attachment $obj, $name, %arg;	375	if (ref $obj) {
285	}	376	delete $obj->{_attachment}{$name};
		377	reattach ($obj);
		378	} else {
		379	Carp::croak "cannot, currently, detach class attachments";
		380	}
		381	};
286		382
287	sub cf::player::attach {	383	sub cf::attachable::attached {
288	my ($obj, $name, %arg) = @_;	384	my ($obj, $name) = @_;
289		385
290	_attach_attachment $obj, $name, %arg;	386	exists $obj->{_attachment}{$name}
291	}	387	}
292		388
293	sub cf::map::attach {	389	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
294	my ($obj, $name, %arg) = @_;	390	eval "#line " . __LINE__ . " 'cf.pm'
		391	sub cf::\L$klass\E::_attach_registry {
		392	(\\\@CB_$klass, KLASS_$klass)
		393	}
295		394
296	_attach_attachment $obj, $name, %arg;	395	sub cf::\L$klass\E::attachment {
297	}
298
299	sub attach_global {
300	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
301	}
302
303	sub attach_to_type {
304	my $type = shift;
305	my $subtype = shift;
306
307	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
308	}
309
310	sub attach_to_objects {
311	_attach @CB_OBJECT, KLASS_OBJECT, @_
312	}
313
314	sub attach_to_players {
315	_attach @CB_PLAYER, KLASS_PLAYER, @_
316	}
317
318	sub attach_to_maps {
319	_attach @CB_MAP, KLASS_MAP, @_
320	}
321
322	sub register_attachment {
323	my $name = shift;	396	my \$name = shift;
324		397
325	$attachment{$name} = [[KLASS_OBJECT, @_]];
326	}
327
328	sub register_map_attachment {
329	my $name = shift;
330
331	$attachment{$name} = [[KLASS_MAP, @_]];	398	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		399	}
		400	";
		401	die if $@;
332	}	402	}
333		403
334	our $override;	404	our $override;
335	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?
336		406
…		…
350	for (@$callbacks) {	420	for (@$callbacks) {
351	eval { &{$_->[1]} };	421	eval { &{$_->[1]} };
352		422
353	if ($@) {	423	if ($@) {
354	warn "$@";	424	warn "$@";
355	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	425	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
356	override;	426	override;
357	}	427	}
358		428
359	return 1 if $override;	429	return 1 if $override;
360	}	430	}
361		431
362	0	432	0
363	}	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
364		448
365	#############################################################################	449	#############################################################################
366	# object support	450	# object support
367		451
368	sub instantiate {	452	sub instantiate {
…		…
388		472
389	for my $name (keys %{ $obj->{_attachment} || {} }) {	473	for my $name (keys %{ $obj->{_attachment} || {} }) {
390	if (my $attach = $attachment{$name}) {	474	if (my $attach = $attachment{$name}) {
391	for (@$attach) {	475	for (@$attach) {
392	my ($klass, @attach) = @$_;	476	my ($klass, @attach) = @$_;
393	_attach @$registry, $klass, @attach;	477	_attach $registry, $klass, @attach;
394	}	478	}
395	} else {	479	} else {
396	warn "object uses attachment '$name' that is not available, postponing.\n";	480	warn "object uses attachment '$name' that is not available, postponing.\n";
397	}	481	}
398	}	482	}
399	}	483	}
400		484
401	sub object_freezer_save {	485	sub object_freezer_save {
402	my ($filename, $objs) = @_;	486	my ($filename, $rdata, $objs) = @_;
403		487
404	if (@$objs) {	488	if (length $$rdata) {
		489	warn sprintf "saving %s (%d,%d)\n",
		490	$filename, length $$rdata, scalar @$objs;
		491
405	open my $fh, ">:raw", "$filename.pst~";	492	if (open my $fh, ">:raw", "$filename~") {
		493	chmod SAVE_MODE, $fh;
		494	syswrite $fh, $$rdata;
		495	close $fh;
		496
		497	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		498	chmod SAVE_MODE, $fh;
406	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	499	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
407	close $fh;	500	close $fh;
408	chmod SAVE_MODE, "$filename.pst~";
409	rename "$filename.pst~", "$filename.pst";	501	rename "$filename.pst~", "$filename.pst";
		502	} else {
		503	unlink "$filename.pst";
		504	}
		505
		506	rename "$filename~", $filename;
		507	} else {
		508	warn "FATAL: $filename~: $!\n";
		509	}
410	} else {	510	} else {
		511	unlink $filename;
411	unlink "$filename.pst";	512	unlink "$filename.pst";
412	}	513	}
		514	}
413		515
414	chmod SAVE_MODE, "$filename~";	516	sub object_freezer_as_string {
415	rename "$filename~", $filename;	517	my ($rdata, $objs) = @_;
		518
		519	use Data::Dumper;
		520
		521	$$rdata . Dumper $objs
416	}	522	}
417		523
418	sub object_thawer_load {	524	sub object_thawer_load {
419	my ($filename) = @_;	525	my ($filename) = @_;
420		526
		527	local $/;
		528
		529	my $av;
		530
		531	#TODO: use sysread etc.
		532	if (open my $data, "<:raw:perlio", $filename) {
		533	$data = <$data>;
421	open my $fh, "<:raw:perlio", "$filename.pst"	534	if (open my $pst, "<:raw:perlio", "$filename.pst") {
422	or return;	535	$av = eval { (Storable::thaw <$pst>)->{objs} };
		536	}
		537	return ($data, $av);
		538	}
423		539
424	eval { local $/; (Storable::thaw <$fh>)->{objs} }	540	()
425	}	541	}
426		542
427	attach_to_objects	543	cf::object->attach (
428	prio => -1000000,	544	prio => -1000000,
429	on_clone => sub {	545	on_clone => sub {
430	my ($src, $dst) = @_;	546	my ($src, $dst) = @_;
431		547
432	@{$dst->registry} = @{$src->registry};	548	@{$dst->registry} = @{$src->registry};
…		…
434	%$dst = %$src;	550	%$dst = %$src;
435		551
436	%{$dst->{_attachment}} = %{$src->{_attachment}}	552	%{$dst->{_attachment}} = %{$src->{_attachment}}
437	if exists $src->{_attachment};	553	if exists $src->{_attachment};
438	},	554	},
439	;	555	);
440		556
441	#############################################################################	557	#############################################################################
442	# old plug-in events	558	# command handling &c
443		559
444	sub inject_event {	560	=item cf::register_command $name => \&callback($ob,$args);
445	my $extension = shift;
446	my $event_code = shift;
447		561
448	my $cb = $hook[$event_code]{$extension}	562	Register a callback for execution when the client sends the user command
449	or return;	563	$name.
450		564
451	&$cb	565	=cut
452	}
453
454	sub inject_global_event {
455	my $event = shift;
456
457	my $cb = $hook[$event]
458	or return;
459
460	List::Util::max map &$_, values %$cb
461	}
462
463	sub inject_command {
464	my ($name, $obj, $params) = @_;
465
466	for my $cmd (@{ $command{$name} }) {
467	$cmd->[1]->($obj, $params);
468	}
469
470	-1
471	}
472		566
473	sub register_command {	567	sub register_command {
474	my ($name, $time, $cb) = @_;	568	my ($name, $cb) = @_;
475		569
476	my $caller = caller;	570	my $caller = caller;
477	#warn "registering command '$name/$time' to '$caller'";	571	#warn "registering command '$name/$time' to '$caller'";
478		572
479	push @{ $command{$name} }, [$time, $cb, $caller];	573	push @{ $COMMAND{$name} }, [$caller, $cb];
480	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
481	}	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
482		584
483	sub register_extcmd {	585	sub register_extcmd {
484	my ($name, $cb) = @_;	586	my ($name, $cb) = @_;
485		587
486	my $caller = caller;	588	my $caller = caller;
487	#warn "registering extcmd '$name' to '$caller'";	589	#warn "registering extcmd '$name' to '$caller'";
488		590
489	$extcmd{$name} = [$cb, $caller];	591	$EXTCMD{$name} = [$cb, $caller];
490	}	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	);
491		625
492	sub register {	626	sub register {
493	my ($base, $pkg) = @_;	627	my ($base, $pkg) = @_;
494		628
495	#TODO	629	#TODO
…		…
514	. "#line 1 \"$path\"\n{\n"	648	. "#line 1 \"$path\"\n{\n"
515	. (do { local $/; <$fh> })	649	. (do { local $/; <$fh> })
516	. "\n};\n1";	650	. "\n};\n1";
517		651
518	eval $source	652	eval $source
519	or die "$path: $@";	653	or die $@ ? "$path: $@\n"
		654	: "extension disabled.\n";
520		655
521	push @exts, $pkg;	656	push @exts, $pkg;
522	$ext_pkg{$base} = $pkg;	657	$ext_pkg{$base} = $pkg;
523		658
524	# no strict 'refs';	659	# no strict 'refs';
…		…
537	# for my $idx (0 .. $#PLUGIN_EVENT) {	672	# for my $idx (0 .. $#PLUGIN_EVENT) {
538	# delete $hook[$idx]{$pkg};	673	# delete $hook[$idx]{$pkg};
539	# }	674	# }
540		675
541	# remove commands	676	# remove commands
542	for my $name (keys %command) {	677	for my $name (keys %COMMAND) {
543	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	678	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
544		679
545	if (@cb) {	680	if (@cb) {
546	$command{$name} = \@cb;	681	$COMMAND{$name} = \@cb;
547	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
548	} else {	682	} else {
549	delete $command{$name};
550	delete $COMMAND{"$name\000"};	683	delete $COMMAND{$name};
551	}	684	}
552	}	685	}
553		686
554	# remove extcmds	687	# remove extcmds
555	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	688	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
556	delete $extcmd{$name};	689	delete $EXTCMD{$name};
557	}	690	}
558		691
559	if (my $cb = $pkg->can ("unload")) {	692	if (my $cb = $pkg->can ("unload")) {
560	eval {	693	eval {
561	$cb->($pkg);	694	$cb->($pkg);
…		…
565		698
566	Symbol::delete_package $pkg;	699	Symbol::delete_package $pkg;
567	}	700	}
568		701
569	sub load_extensions {	702	sub load_extensions {
570	my $LIBDIR = maps_directory "perl";
571
572	for my $ext (<$LIBDIR/*.ext>) {	703	for my $ext (<$LIBDIR/*.ext>) {
573	next unless -r $ext;	704	next unless -r $ext;
574	eval {	705	eval {
575	load_extension $ext;	706	load_extension $ext;
576	1	707	1
577	} or warn "$ext not loaded: $@";	708	} or warn "$ext not loaded: $@";
578	}	709	}
579	}	710	}
580		711
581	sub _perl_reload(&) {
582	my ($msg) = @_;
583
584	$msg->("reloading...");
585
586	eval {
587	# 1. cancel all watchers
588	$_->cancel for Event::all_watchers;
589
590	# 2. unload all extensions
591	for (@exts) {
592	$msg->("unloading <$_>");
593	unload_extension $_;
594	}
595
596	# 3. unload all modules loaded from $LIBDIR
597	while (my ($k, $v) = each %INC) {
598	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
599
600	$msg->("removing <$k>");
601	delete $INC{$k};
602
603	$k =~ s/\.pm$//;
604	$k =~ s/\//::/g;
605
606	if (my $cb = $k->can ("unload_module")) {
607	$cb->();
608	}
609
610	Symbol::delete_package $k;
611	}
612
613	# 4. get rid of safe::, as good as possible
614	Symbol::delete_package "safe::$_"
615	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
616
617	# 5. remove register_script_function callbacks
618	# TODO
619
620	# 6. unload cf.pm "a bit"
621	delete $INC{"cf.pm"};
622
623	# don't, removes xs symbols, too,
624	# and global variables created in xs
625	#Symbol::delete_package __PACKAGE__;
626
627	# 7. reload cf.pm
628	$msg->("reloading cf.pm");
629	require cf;
630	};
631	$msg->($@) if $@;
632
633	$msg->("reloaded");
634	};
635
636	sub perl_reload() {
637	_perl_reload {
638	warn $_[0];
639	print "$_[0]\n";
640	};
641	}
642
643	register_command "perl-reload", 0, sub {
644	my ($who, $arg) = @_;
645
646	if ($who->flag (FLAG_WIZ)) {
647	_perl_reload {
648	warn $_[0];
649	$who->message ($_[0]);
650	};
651	}
652	};
653
654	#############################################################################
655	# extcmd framework, basically convert ext <msg>
656	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
657
658	attach_to_players
659	on_extcmd => sub {
660	my ($pl, $buf) = @_;
661
662	my $msg = eval { from_json $buf };
663
664	if (ref $msg) {
665	if (my $cb = $extcmd{$msg->{msgtype}}) {
666	if (my %reply = $cb->[0]->($pl, $msg)) {
667	$pl->ext_reply ($msg->{msgid}, %reply);
668	}
669	}
670	} else {
671	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
672	}
673
674	cf::override;
675	},
676	;
677
678	#############################################################################	712	#############################################################################
679	# load/save/clean perl data associated with a map	713	# load/save/clean perl data associated with a map
680		714
681	*cf::mapsupport::on_clean = sub {	715	*cf::mapsupport::on_clean = sub {
682	my ($map) = @_;	716	my ($map) = @_;
…		…
685	defined $path or return;	719	defined $path or return;
686		720
687	unlink "$path.pst";	721	unlink "$path.pst";
688	};	722	};
689		723
690	# old style persistent data, TODO: remove #d#
691	*cf::mapsupport::on_swapin =
692	*cf::mapsupport::on_load = sub {
693	my ($map) = @_;
694
695	my $path = $map->tmpname;
696	$path = $map->path unless defined $path;
697
698	open my $fh, "<:raw", "$path.cfperl"
699	or return; # no perl data
700
701	my $data = Storable::thaw do { local $/; <$fh> };
702
703	$data->{version} <= 1
704	or return; # too new
705
706	$map->_set_obs ($data->{obs});
707	$map->invoke (EVENT_MAP_UPGRADE);
708	};
709
710	attach_to_maps prio => -10000, package => cf::mapsupport::;	724	cf::map->attach (prio => -10000, package => cf::mapsupport::);
711		725
712	#############################################################################	726	#############################################################################
713	# load/save perl data associated with player->ob objects	727	# load/save perl data associated with player->ob objects
714		728
715	sub all_objects(@) {	729	sub all_objects(@) {
716	@_, map all_objects ($_->inv), @_	730	@_, map all_objects ($_->inv), @_
717	}	731	}
718		732
719	attach_to_players	733	# TODO: compatibility cruft, remove when no longer needed
		734	cf::player->attach (
720	on_load => sub {	735	on_load => sub {
721	my ($pl, $path) = @_;	736	my ($pl, $path) = @_;
722		737
723	for my $o (all_objects $pl->ob) {	738	for my $o (all_objects $pl->ob) {
724	if (my $value = $o->get_ob_key_value ("_perl_data")) {	739	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
726		741
727	%$o = %{ Storable::thaw pack "H*", $value };	742	%$o = %{ Storable::thaw pack "H*", $value };
728	}	743	}
729	}	744	}
730	},	745	},
731	;	746	);
732		747
733	#############################################################################	748	#############################################################################
734	# 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
735		757
736	=item cf::player::exists $login	758	=item cf::player::exists $login
737		759
738	Returns true when the given account exists.	760	Returns true when the given account exists.
739		761
…		…
742	sub cf::player::exists($) {	764	sub cf::player::exists($) {
743	cf::player::find $_[0]	765	cf::player::find $_[0]
744	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;
745	}	767	}
746		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
747	=item $player->reply ($npc, $msg[, $flags])	789	=item $player_object->reply ($npc, $msg[, $flags])
748		790
749	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
750	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
751	dialogue with the given NPC character.	793	dialogue with the given NPC character.
752		794
753	=cut	795	=cut
754		796
755	# rough implementation of a future "reply" method that works	797	# rough implementation of a future "reply" method that works
756	# with dialog boxes.	798	# with dialog boxes.
		799	#TODO: the first argument must go, split into a $npc->reply_to ( method
757	sub cf::object::player::reply($$$;$) {	800	sub cf::object::player::reply($$$;$) {
758	my ($self, $npc, $msg, $flags) = @_;	801	my ($self, $npc, $msg, $flags) = @_;
759		802
760	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	803	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
761		804
…		…
765	$msg = $npc->name . " says: $msg" if $npc;	808	$msg = $npc->name . " says: $msg" if $npc;
766	$self->message ($msg, $flags);	809	$self->message ($msg, $flags);
767	}	810	}
768	}	811	}
769		812
770	=item $player->ext_reply ($msgid, $msgtype, %msg)	813	=item $player_object->may ("access")
771		814
772	Sends an ext reply to the player.	815	Returns wether the given player is authorized to access resource "access"
		816	(e.g. "command_wizcast").
773		817
774	=cut	818	=cut
775		819
776	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 {
777	my ($self, $id, %msg) = @_;	906	my ($self, $cb) = @_;
778		907
779	$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	};
780		916
781	$self->send ("ext " . to_json \%msg);	917	$self->{_coro}{$coro+0} = $coro;
782	}	918	}
783		919
784	#############################################################################	920	cf::client->attach (
785	# 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
786		941
787	our $safe = new Safe "safe";	942	our $safe = new Safe "safe";
788	our $safe_hole = new Safe::Hole;	943	our $safe_hole = new Safe::Hole;
789		944
790	$SIG{FPE} = 'IGNORE';	945	$SIG{FPE} = 'IGNORE';
791		946
792	$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));
793		948
794	# here we export the classes and methods available to script code	949	# here we export the classes and methods available to script code
795		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
796	for (	962	for (
797	["cf::object" => qw(contr pay_amount pay_player)],	963	["cf::object" => qw(contr pay_amount pay_player map)],
798	["cf::object::player" => qw(player)],	964	["cf::object::player" => qw(player)],
799	["cf::player" => qw(peaceful)],	965	["cf::player" => qw(peaceful)],
		966	["cf::map" => qw(trigger)],
800	) {	967	) {
801	no strict 'refs';	968	no strict 'refs';
802	my ($pkg, @funs) = @$_;	969	my ($pkg, @funs) = @$_;
803	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	970	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
804	for @funs;	971	for @funs;
805	}	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
806		985
807	sub safe_eval($;@) {	986	sub safe_eval($;@) {
808	my ($code, %vars) = @_;	987	my ($code, %vars) = @_;
809		988
810	my $qcode = $code;	989	my $qcode = $code;
…		…
833	}	1012	}
834		1013
835	wantarray ? @res : $res[0]	1014	wantarray ? @res : $res[0]
836	}	1015	}
837		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
838	sub register_script_function {	1032	sub register_script_function {
839	my ($fun, $cb) = @_;	1033	my ($fun, $cb) = @_;
840		1034
841	no strict 'refs';	1035	no strict 'refs';
842	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1036	*{"safe::$fun"} = $safe_hole->wrap ($cb);
843	}	1037	}
844		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
845	#############################################################################	1148	#############################################################################
846	# the server's main()	1149	# the server's main()
847		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
848	sub main {	1159	sub main {
		1160	cfg_load;
		1161	db_load;
		1162	load_extensions;
849	Event::loop;	1163	Event::loop;
850	}	1164	}
851		1165
852	#############################################################################	1166	#############################################################################
853	# initialisation	1167	# initialisation
854		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
855	register "<global>", __PACKAGE__;	1248	register "<global>", __PACKAGE__;
856		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
857	unshift @INC, $LIBDIR;	1261	unshift @INC, $LIBDIR;
858		1262
859	load_extensions;
860
861	$TICK_WATCHER = Event->timer (	1263	$TICK_WATCHER = Event->timer (
862	prio => 1,	1264	prio => 0,
863	at => $NEXT_TICK || 1,	1265	at => $NEXT_TICK || 1,
		1266	data => WF_AUTOCANCEL,
864	cb => sub {	1267	cb => sub {
865	cf::server_tick; # one server iteration	1268	cf::server_tick; # one server iteration
866		1269
867	my $NOW = Event::time;	1270	my $NOW = Event::time;
868	$NEXT_TICK += $TICK;	1271	$NEXT_TICK += $TICK;
869		1272
870	# if we are delayed by four ticks, skip them all	1273	# if we are delayed by four ticks or more, skip them all
871	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1274	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
872		1275
873	$TICK_WATCHER->at ($NEXT_TICK);	1276	$TICK_WATCHER->at ($NEXT_TICK);
874	$TICK_WATCHER->start;	1277	$TICK_WATCHER->start;
875	},	1278	},
876	);	1279	);
877		1280
878	_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);
879		1288
880	1	1289	1
881		1290

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