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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.54 by root, Tue Aug 29 14:49:28 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
110	=item $object->attach ($attachment, key => $value...)	152	=head2 ATTACHABLE OBJECTS
111		153
112	=item $object->detach ($attachment)	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.
113		157
114	Attach/detach a pre-registered attachment to an object.	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+).
115		161
116	=item $player->attach ($attachment, key => $value...)	162	=over 4
117		163
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	164	=item $attachable->attach ($attachment, key => $value...)
123		165
124	=item $map->detach ($attachment)	166	=item $attachable->detach ($attachment)
125		167
126	Attach/detach a pre-registered attachment to a map.	168	Attach/detach a pre-registered attachment to a specific object and give it
		169	the specified key/value pairs as arguments.
127		170
128	=item cf::attach_global ...	171	Example, attach a minesweeper attachment to the given object, making it a
		172	10x10 minesweeper game:
129		173
130	Attach handlers for global events.	174	$obj->attach (minesweeper => width => 10, height => 10);
131		175
132	This and all following C<attach_*>-functions expect any number of the	176	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	177
		178	Checks wether the named attachment is currently attached to the object.
		179
		180	=item cf::CLASS->attach ...
		181
		182	=item cf::CLASS->detach ...
		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:
134		218
135	=over 4	219	=over 4
136		220
137	=item prio => $number	221	=item prio => $number
138		222
…		…
140	by another C<prio> setting). Lower priority handlers get executed	224	by another C<prio> setting). Lower priority handlers get executed
141	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
142	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
143	unless you know what you are doing.	227	unless you know what you are doing.
144		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
145	=item on_I<event> => \&cb	235	=item on_I<event> => \&cb
146		236
147	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
148	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
149	handlers are recognised generally depends on the type of object these	239	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	248	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	249	object/class are recognised.
160		250
161	=back	251	=back
162		252
163	=item cf::attach_to_type $object_type, $subtype, ...	253	Example, define an attachment called "sockpuppet" that calls the given
		254	event handler when a monster attacks:
164		255
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	256	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	257	on_skill_attack => sub {
167	type.	258	my ($self, $victim) = @_;
		259	...
		260	}
		261	}
168		262
169	=item cf::attach_to_objects ...	263	=item $attachable->valid
170		264
171	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
172	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
173	the game.	267	valid C counterpart anymore you get an exception at runtime. This method
174		268	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	269	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		270
193	=cut	271	=cut
194		272
195	# the following variables are defined in .xs and must not be re-created	273	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	274	our @CB_GLOBAL = (); # registry for all global events
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	275	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	276	our @CB_PLAYER = ();
		277	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	278	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	279	our @CB_MAP = ();
201		280
202	my %attachment;	281	my %attachment;
203		282
204	sub _attach_cb($\%$$$) {	283	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	284	my ($registry, $event, $prio, $cb) = @_;
206		285
207	use sort 'stable';	286	use sort 'stable';
208		287
209	$cb = [$prio, $cb];	288	$cb = [$prio, $cb];
210		289
211	@{$registry->[$event]} = sort	290	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	291	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	292	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	293	}
217		294
218	# attach handles attaching event callbacks	295	# attach handles attaching event callbacks
219	# 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
220	# registry (== where the callback attaches to).	297	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	298	sub _attach {
222	my ($registry, $klass, @arg) = @_;	299	my ($registry, $klass, @arg) = @_;
223		300
		301	my $object_type;
224	my $prio = 0;	302	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	303	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
232		304
233	while (@arg) {	305	while (@arg) {
234	my $type = shift @arg;	306	my $type = shift @arg;
235		307
236	if ($type eq "prio") {	308	if ($type eq "prio") {
237	$prio = shift @arg;	309	$prio = shift @arg;
238		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
239	} elsif ($type eq "package") {	320	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	321	my $pkg = shift @arg;
241		322
242	while (my ($name, $id) = each %cb_id) {	323	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	324	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	325	_attach_cb $registry, $id, $prio, $cb;
245	}	326	}
246	}	327	}
247		328
248	} elsif (exists $cb_id{$type}) {	329	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	330	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		331
251	} elsif (ref $type) {	332	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	333	warn "attaching objects not supported, ignoring.\n";
253		334
254	} else {	335	} else {
255	shift @arg;	336	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	337	warn "attach argument '$type' not supported, ignoring.\n";
257	}	338	}
258	}	339	}
259
260	\%undo
261	}	340	}
262		341
263	sub _attach_attachment {	342	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	343	my ($obj, $name, %arg) = @_;
265		344
266	my $res;	345	return if exists $obj->{_attachment}{$name};
267		346
268	if (my $attach = $attachment{$name}) {	347	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	348	my $registry = $obj->registry;
270		349
271	for (@$attach) {	350	for (@$attach) {
272	my ($klass, @attach) = @$_;	351	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	352	_attach $registry, $klass, @attach;
274	}	353	}
275		354
276	$obj->{$name} = \%arg;	355	$obj->{$name} = \%arg;
277	} else {	356	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	357	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	358	}
280		359
281	$obj->{_attachment}{$name} = undef;	360	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	361	}
286		362
287	*cf::object::attach =	363	sub cf::attachable::attach {
288	*cf::player::attach =	364	if (ref $_[0]) {
289	*cf::map::attach = sub {	365	_object_attach @_;
290	my ($obj, $name, %arg) = @_;	366	} else {
291		367	_attach shift->_attach_registry, @_;
292	_attach_attachment $obj, $name, %arg;	368	}
293	}	369	};
294		370
295	# all those should be optimised	371	# all those should be optimised
296	*cf::object::detach =	372	sub cf::attachable::detach {
297	*cf::player::detach =
298	*cf::map::detach = sub {
299	my ($obj, $name) = @_;	373	my ($obj, $name) = @_;
300		374
		375	if (ref $obj) {
301	delete $obj->{_attachment}{$name};	376	delete $obj->{_attachment}{$name};
302	reattach $obj;	377	reattach ($obj);
		378	} else {
		379	Carp::croak "cannot, currently, detach class attachments";
		380	}
303	};	381	};
304		382
305	sub attach_global {	383	sub cf::attachable::attached {
306	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	384	my ($obj, $name) = @_;
307	}
308		385
309	sub attach_to_type {	386	exists $obj->{_attachment}{$name}
310	my $type = shift;
311	my $subtype = shift;
312
313	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
314	}	387	}
315		388
316	sub attach_to_objects {	389	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
317	_attach @CB_OBJECT, KLASS_OBJECT, @_	390	eval "#line " . __LINE__ . " 'cf.pm'
318	}	391	sub cf::\L$klass\E::_attach_registry {
		392	(\\\@CB_$klass, KLASS_$klass)
		393	}
319		394
320	sub attach_to_players {	395	sub cf::\L$klass\E::attachment {
321	_attach @CB_PLAYER, KLASS_PLAYER, @_
322	}
323
324	sub attach_to_maps {
325	_attach @CB_MAP, KLASS_MAP, @_
326	}
327
328	sub register_attachment {
329	my $name = shift;	396	my \$name = shift;
330		397
331	$attachment{$name} = [[KLASS_OBJECT, @_]];
332	}
333
334	sub register_map_attachment {
335	my $name = shift;
336
337	$attachment{$name} = [[KLASS_MAP, @_]];	398	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		399	}
		400	";
		401	die if $@;
338	}	402	}
339		403
340	our $override;	404	our $override;
341	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?
342		406
…		…
356	for (@$callbacks) {	420	for (@$callbacks) {
357	eval { &{$_->[1]} };	421	eval { &{$_->[1]} };
358		422
359	if ($@) {	423	if ($@) {
360	warn "$@";	424	warn "$@";
361	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	425	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
362	override;	426	override;
363	}	427	}
364		428
365	return 1 if $override;	429	return 1 if $override;
366	}	430	}
367		431
368	0	432	0
369	}	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
370		448
371	#############################################################################	449	#############################################################################
372	# object support	450	# object support
373		451
374	sub instantiate {	452	sub instantiate {
…		…
394		472
395	for my $name (keys %{ $obj->{_attachment} || {} }) {	473	for my $name (keys %{ $obj->{_attachment} || {} }) {
396	if (my $attach = $attachment{$name}) {	474	if (my $attach = $attachment{$name}) {
397	for (@$attach) {	475	for (@$attach) {
398	my ($klass, @attach) = @$_;	476	my ($klass, @attach) = @$_;
399	_attach @$registry, $klass, @attach;	477	_attach $registry, $klass, @attach;
400	}	478	}
401	} else {	479	} else {
402	warn "object uses attachment '$name' that is not available, postponing.\n";	480	warn "object uses attachment '$name' that is not available, postponing.\n";
403	}	481	}
404	}	482	}
405	}	483	}
406		484
407	sub object_freezer_save {	485	sub object_freezer_save {
408	my ($filename, $objs) = @_;	486	my ($filename, $rdata, $objs) = @_;
409		487
410	if (@$objs) {	488	if (length $$rdata) {
		489	warn sprintf "saving %s (%d,%d)\n",
		490	$filename, length $$rdata, scalar @$objs;
		491
411	open my $fh, ">:raw", "$filename.pst~";	492	if (open my $fh, ">:raw", "$filename~") {
		493	chmod SAVE_MODE, $fh;
		494	syswrite $fh, $$rdata;
		495	close $fh;
		496
		497	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		498	chmod SAVE_MODE, $fh;
412	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	499	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
413	close $fh;	500	close $fh;
414	chmod SAVE_MODE, "$filename.pst~";
415	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	}
416	} else {	510	} else {
		511	unlink $filename;
417	unlink "$filename.pst";	512	unlink "$filename.pst";
418	}	513	}
		514	}
419		515
420	chmod SAVE_MODE, "$filename~";	516	sub object_freezer_as_string {
421	rename "$filename~", $filename;	517	my ($rdata, $objs) = @_;
		518
		519	use Data::Dumper;
		520
		521	$$rdata . Dumper $objs
422	}	522	}
423		523
424	sub object_thawer_load {	524	sub object_thawer_load {
425	my ($filename) = @_;	525	my ($filename) = @_;
426		526
		527	local $/;
		528
		529	my $av;
		530
		531	#TODO: use sysread etc.
		532	if (open my $data, "<:raw:perlio", $filename) {
		533	$data = <$data>;
427	open my $fh, "<:raw:perlio", "$filename.pst"	534	if (open my $pst, "<:raw:perlio", "$filename.pst") {
428	or return;	535	$av = eval { (Storable::thaw <$pst>)->{objs} };
		536	}
		537	return ($data, $av);
		538	}
429		539
430	eval { local $/; (Storable::thaw <$fh>)->{objs} }	540	()
431	}	541	}
432		542
433	attach_to_objects	543	cf::object->attach (
434	prio => -1000000,	544	prio => -1000000,
435	on_clone => sub {	545	on_clone => sub {
436	my ($src, $dst) = @_;	546	my ($src, $dst) = @_;
437		547
438	@{$dst->registry} = @{$src->registry};	548	@{$dst->registry} = @{$src->registry};
…		…
440	%$dst = %$src;	550	%$dst = %$src;
441		551
442	%{$dst->{_attachment}} = %{$src->{_attachment}}	552	%{$dst->{_attachment}} = %{$src->{_attachment}}
443	if exists $src->{_attachment};	553	if exists $src->{_attachment};
444	},	554	},
445	;	555	);
446		556
447	#############################################################################	557	#############################################################################
448	# old plug-in events	558	# command handling &c
449		559
450	sub inject_event {	560	=item cf::register_command $name => \&callback($ob,$args);
451	my $extension = shift;
452	my $event_code = shift;
453		561
454	my $cb = $hook[$event_code]{$extension}	562	Register a callback for execution when the client sends the user command
455	or return;	563	$name.
456		564
457	&$cb	565	=cut
458	}
459
460	sub inject_global_event {
461	my $event = shift;
462
463	my $cb = $hook[$event]
464	or return;
465
466	List::Util::max map &$_, values %$cb
467	}
468
469	sub inject_command {
470	my ($name, $obj, $params) = @_;
471
472	for my $cmd (@{ $command{$name} }) {
473	$cmd->[1]->($obj, $params);
474	}
475
476	-1
477	}
478		566
479	sub register_command {	567	sub register_command {
480	my ($name, $time, $cb) = @_;	568	my ($name, $cb) = @_;
481		569
482	my $caller = caller;	570	my $caller = caller;
483	#warn "registering command '$name/$time' to '$caller'";	571	#warn "registering command '$name/$time' to '$caller'";
484		572
485	push @{ $command{$name} }, [$time, $cb, $caller];	573	push @{ $COMMAND{$name} }, [$caller, $cb];
486	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
487	}	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
488		584
489	sub register_extcmd {	585	sub register_extcmd {
490	my ($name, $cb) = @_;	586	my ($name, $cb) = @_;
491		587
492	my $caller = caller;	588	my $caller = caller;
493	#warn "registering extcmd '$name' to '$caller'";	589	#warn "registering extcmd '$name' to '$caller'";
494		590
495	$extcmd{$name} = [$cb, $caller];	591	$EXTCMD{$name} = [$cb, $caller];
496	}	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	);
497		625
498	sub register {	626	sub register {
499	my ($base, $pkg) = @_;	627	my ($base, $pkg) = @_;
500		628
501	#TODO	629	#TODO
…		…
520	. "#line 1 \"$path\"\n{\n"	648	. "#line 1 \"$path\"\n{\n"
521	. (do { local $/; <$fh> })	649	. (do { local $/; <$fh> })
522	. "\n};\n1";	650	. "\n};\n1";
523		651
524	eval $source	652	eval $source
525	or die "$path: $@";	653	or die $@ ? "$path: $@\n"
		654	: "extension disabled.\n";
526		655
527	push @exts, $pkg;	656	push @exts, $pkg;
528	$ext_pkg{$base} = $pkg;	657	$ext_pkg{$base} = $pkg;
529		658
530	# no strict 'refs';	659	# no strict 'refs';
…		…
543	# for my $idx (0 .. $#PLUGIN_EVENT) {	672	# for my $idx (0 .. $#PLUGIN_EVENT) {
544	# delete $hook[$idx]{$pkg};	673	# delete $hook[$idx]{$pkg};
545	# }	674	# }
546		675
547	# remove commands	676	# remove commands
548	for my $name (keys %command) {	677	for my $name (keys %COMMAND) {
549	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	678	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
550		679
551	if (@cb) {	680	if (@cb) {
552	$command{$name} = \@cb;	681	$COMMAND{$name} = \@cb;
553	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
554	} else {	682	} else {
555	delete $command{$name};
556	delete $COMMAND{"$name\000"};	683	delete $COMMAND{$name};
557	}	684	}
558	}	685	}
559		686
560	# remove extcmds	687	# remove extcmds
561	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	688	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
562	delete $extcmd{$name};	689	delete $EXTCMD{$name};
563	}	690	}
564		691
565	if (my $cb = $pkg->can ("unload")) {	692	if (my $cb = $pkg->can ("unload")) {
566	eval {	693	eval {
567	$cb->($pkg);	694	$cb->($pkg);
…		…
571		698
572	Symbol::delete_package $pkg;	699	Symbol::delete_package $pkg;
573	}	700	}
574		701
575	sub load_extensions {	702	sub load_extensions {
576	my $LIBDIR = maps_directory "perl";
577
578	for my $ext (<$LIBDIR/*.ext>) {	703	for my $ext (<$LIBDIR/*.ext>) {
579	next unless -r $ext;	704	next unless -r $ext;
580	eval {	705	eval {
581	load_extension $ext;	706	load_extension $ext;
582	1	707	1
583	} or warn "$ext not loaded: $@";	708	} or warn "$ext not loaded: $@";
584	}	709	}
585	}	710	}
586		711
587	sub _perl_reload(&) {
588	my ($msg) = @_;
589
590	$msg->("reloading...");
591
592	eval {
593	# 1. cancel all watchers
594	$_->cancel for Event::all_watchers;
595
596	# 2. unload all extensions
597	for (@exts) {
598	$msg->("unloading <$_>");
599	unload_extension $_;
600	}
601
602	# 3. unload all modules loaded from $LIBDIR
603	while (my ($k, $v) = each %INC) {
604	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
605
606	$msg->("removing <$k>");
607	delete $INC{$k};
608
609	$k =~ s/\.pm$//;
610	$k =~ s/\//::/g;
611
612	if (my $cb = $k->can ("unload_module")) {
613	$cb->();
614	}
615
616	Symbol::delete_package $k;
617	}
618
619	# 4. get rid of safe::, as good as possible
620	Symbol::delete_package "safe::$_"
621	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
622
623	# 5. remove register_script_function callbacks
624	# TODO
625
626	# 6. unload cf.pm "a bit"
627	delete $INC{"cf.pm"};
628
629	# don't, removes xs symbols, too,
630	# and global variables created in xs
631	#Symbol::delete_package __PACKAGE__;
632
633	# 7. reload cf.pm
634	$msg->("reloading cf.pm");
635	require cf;
636	};
637	$msg->($@) if $@;
638
639	$msg->("reloaded");
640	};
641
642	sub perl_reload() {
643	_perl_reload {
644	warn $_[0];
645	print "$_[0]\n";
646	};
647	}
648
649	register_command "perl-reload", 0, sub {
650	my ($who, $arg) = @_;
651
652	if ($who->flag (FLAG_WIZ)) {
653	_perl_reload {
654	warn $_[0];
655	$who->message ($_[0]);
656	};
657	}
658	};
659
660	#############################################################################
661	# extcmd framework, basically convert ext <msg>
662	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
663
664	attach_to_players
665	on_extcmd => sub {
666	my ($pl, $buf) = @_;
667
668	my $msg = eval { from_json $buf };
669
670	if (ref $msg) {
671	if (my $cb = $extcmd{$msg->{msgtype}}) {
672	if (my %reply = $cb->[0]->($pl, $msg)) {
673	$pl->ext_reply ($msg->{msgid}, %reply);
674	}
675	}
676	} else {
677	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
678	}
679
680	cf::override;
681	},
682	;
683
684	#############################################################################	712	#############################################################################
685	# load/save/clean perl data associated with a map	713	# load/save/clean perl data associated with a map
686		714
687	*cf::mapsupport::on_clean = sub {	715	*cf::mapsupport::on_clean = sub {
688	my ($map) = @_;	716	my ($map) = @_;
…		…
691	defined $path or return;	719	defined $path or return;
692		720
693	unlink "$path.pst";	721	unlink "$path.pst";
694	};	722	};
695		723
696	# old style persistent data, TODO: remove #d#
697	*cf::mapsupport::on_swapin =
698	*cf::mapsupport::on_load = sub {
699	my ($map) = @_;
700
701	my $path = $map->tmpname;
702	$path = $map->path unless defined $path;
703
704	open my $fh, "<:raw", "$path.cfperl"
705	or return; # no perl data
706
707	my $data = Storable::thaw do { local $/; <$fh> };
708
709	$data->{version} <= 1
710	or return; # too new
711
712	$map->_set_obs ($data->{obs});
713	$map->invoke (EVENT_MAP_UPGRADE);
714	};
715
716	attach_to_maps prio => -10000, package => cf::mapsupport::;	724	cf::map->attach (prio => -10000, package => cf::mapsupport::);
717		725
718	#############################################################################	726	#############################################################################
719	# load/save perl data associated with player->ob objects	727	# load/save perl data associated with player->ob objects
720		728
721	sub all_objects(@) {	729	sub all_objects(@) {
722	@_, map all_objects ($_->inv), @_	730	@_, map all_objects ($_->inv), @_
723	}	731	}
724		732
725	attach_to_players	733	# TODO: compatibility cruft, remove when no longer needed
		734	cf::player->attach (
726	on_load => sub {	735	on_load => sub {
727	my ($pl, $path) = @_;	736	my ($pl, $path) = @_;
728		737
729	for my $o (all_objects $pl->ob) {	738	for my $o (all_objects $pl->ob) {
730	if (my $value = $o->get_ob_key_value ("_perl_data")) {	739	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
732		741
733	%$o = %{ Storable::thaw pack "H*", $value };	742	%$o = %{ Storable::thaw pack "H*", $value };
734	}	743	}
735	}	744	}
736	},	745	},
737	;	746	);
738		747
739	#############################################################################	748	#############################################################################
740	# 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
741		757
742	=item cf::player::exists $login	758	=item cf::player::exists $login
743		759
744	Returns true when the given account exists.	760	Returns true when the given account exists.
745		761
…		…
748	sub cf::player::exists($) {	764	sub cf::player::exists($) {
749	cf::player::find $_[0]	765	cf::player::find $_[0]
750	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;
751	}	767	}
752		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
753	=item $player->reply ($npc, $msg[, $flags])	789	=item $player_object->reply ($npc, $msg[, $flags])
754		790
755	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
756	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
757	dialogue with the given NPC character.	793	dialogue with the given NPC character.
758		794
759	=cut	795	=cut
760		796
761	# rough implementation of a future "reply" method that works	797	# rough implementation of a future "reply" method that works
762	# with dialog boxes.	798	# with dialog boxes.
		799	#TODO: the first argument must go, split into a $npc->reply_to ( method
763	sub cf::object::player::reply($$$;$) {	800	sub cf::object::player::reply($$$;$) {
764	my ($self, $npc, $msg, $flags) = @_;	801	my ($self, $npc, $msg, $flags) = @_;
765		802
766	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	803	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
767		804
…		…
771	$msg = $npc->name . " says: $msg" if $npc;	808	$msg = $npc->name . " says: $msg" if $npc;
772	$self->message ($msg, $flags);	809	$self->message ($msg, $flags);
773	}	810	}
774	}	811	}
775		812
776	=item $player->ext_reply ($msgid, $msgtype, %msg)	813	=item $player_object->may ("access")
777		814
778	Sends an ext reply to the player.	815	Returns wether the given player is authorized to access resource "access"
		816	(e.g. "command_wizcast").
779		817
780	=cut	818	=cut
781		819
782	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 {
783	my ($self, $id, %msg) = @_;	906	my ($self, $cb) = @_;
784		907
785	$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	};
786		916
787	$self->send ("ext " . to_json \%msg);	917	$self->{_coro}{$coro+0} = $coro;
788	}	918	}
789		919
790	#############################################################################	920	cf::client->attach (
791	# 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
792		941
793	our $safe = new Safe "safe";	942	our $safe = new Safe "safe";
794	our $safe_hole = new Safe::Hole;	943	our $safe_hole = new Safe::Hole;
795		944
796	$SIG{FPE} = 'IGNORE';	945	$SIG{FPE} = 'IGNORE';
797		946
798	$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));
799		948
800	# here we export the classes and methods available to script code	949	# here we export the classes and methods available to script code
801		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
802	for (	962	for (
803	["cf::object" => qw(contr pay_amount pay_player)],	963	["cf::object" => qw(contr pay_amount pay_player map)],
804	["cf::object::player" => qw(player)],	964	["cf::object::player" => qw(player)],
805	["cf::player" => qw(peaceful)],	965	["cf::player" => qw(peaceful)],
		966	["cf::map" => qw(trigger)],
806	) {	967	) {
807	no strict 'refs';	968	no strict 'refs';
808	my ($pkg, @funs) = @$_;	969	my ($pkg, @funs) = @$_;
809	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	970	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
810	for @funs;	971	for @funs;
811	}	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
812		985
813	sub safe_eval($;@) {	986	sub safe_eval($;@) {
814	my ($code, %vars) = @_;	987	my ($code, %vars) = @_;
815		988
816	my $qcode = $code;	989	my $qcode = $code;
…		…
839	}	1012	}
840		1013
841	wantarray ? @res : $res[0]	1014	wantarray ? @res : $res[0]
842	}	1015	}
843		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
844	sub register_script_function {	1032	sub register_script_function {
845	my ($fun, $cb) = @_;	1033	my ($fun, $cb) = @_;
846		1034
847	no strict 'refs';	1035	no strict 'refs';
848	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1036	*{"safe::$fun"} = $safe_hole->wrap ($cb);
849	}	1037	}
850		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
851	#############################################################################	1148	#############################################################################
852	# the server's main()	1149	# the server's main()
853		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
854	sub main {	1159	sub main {
		1160	cfg_load;
		1161	db_load;
		1162	load_extensions;
855	Event::loop;	1163	Event::loop;
856	}	1164	}
857		1165
858	#############################################################################	1166	#############################################################################
859	# initialisation	1167	# initialisation
860		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
861	register "<global>", __PACKAGE__;	1248	register "<global>", __PACKAGE__;
862		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
863	unshift @INC, $LIBDIR;	1261	unshift @INC, $LIBDIR;
864		1262
865	load_extensions;
866
867	$TICK_WATCHER = Event->timer (	1263	$TICK_WATCHER = Event->timer (
868	prio => 1,	1264	prio => 0,
869	at => $NEXT_TICK || 1,	1265	at => $NEXT_TICK || 1,
		1266	data => WF_AUTOCANCEL,
870	cb => sub {	1267	cb => sub {
871	cf::server_tick; # one server iteration	1268	cf::server_tick; # one server iteration
872		1269
873	my $NOW = Event::time;	1270	my $NOW = Event::time;
874	$NEXT_TICK += $TICK;	1271	$NEXT_TICK += $TICK;
875		1272
876	# if we are delayed by four ticks, skip them all	1273	# if we are delayed by four ticks or more, skip them all
877	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1274	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
878		1275
879	$TICK_WATCHER->at ($NEXT_TICK);	1276	$TICK_WATCHER->at ($NEXT_TICK);
880	$TICK_WATCHER->start;	1277	$TICK_WATCHER->start;
881	},	1278	},
882	);	1279	);
883		1280
884	_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);
885		1288
886	1	1289	1
887		1290

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