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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.45 by root, Sat Aug 26 23:36:32 2006 UTC vs.
Revision 1.99 by root, Sat Dec 23 05:25:35 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 2.3;
		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
		28	$Coro::main->prio (Coro::PRIO_MIN);
		29
		30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		31
16	our %COMMAND = ();	32	our %COMMAND = ();
		33	our %COMMAND_TIME = ();
		34	our %EXTCMD = ();
		35
		36	_init_vars;
		37
17	our @EVENT;	38	our @EVENT;
18	our %PROP_TYPE;	39	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;
20	our $LIBDIR = maps_directory "perl";
21		40
22	our $TICK = MAX_TIME * 1e-6;	41	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	42	our $TICK_WATCHER;
24	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
25		76
26	BEGIN {	77	BEGIN {
27	*CORE::GLOBAL::warn = sub {	78	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	79	my $msg = join "", @_;
29	$msg .= "\n"	80	$msg .= "\n"
…		…
32	print STDERR "cfperl: $msg";	83	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	84	LOG llevError, "cfperl: $msg";
34	};	85	};
35	}	86	}
36		87
37	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	88	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
38		89	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
39	# generate property mutators	90	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
40	sub prop_gen {	91	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
41	my ($prefix, $class) = @_;	92	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
42
43	no strict 'refs';
44
45	for my $prop (keys %PROP_TYPE) {
46	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
47	my $sub = lc $1;
48
49	my $type = $PROP_TYPE{$prop};
50	my $idx = $PROP_IDX {$prop};
51
52	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
53	$_[0]->get_property ($type, $idx)
54	};
55
56	*{"$class\::set_$sub"} = sub {
57	$_[0]->set_property ($type, $idx, $_[1]);
58	} unless $ignore_set{$prop};
59	}
60	}
61
62	# auto-generate most of the API
63
64	prop_gen OBJECT_PROP => "cf::object";
65	# CFAPI_OBJECT_ANIMATION?
66	prop_gen PLAYER_PROP => "cf::object::player";
67
68	prop_gen MAP_PROP => "cf::map";
69	prop_gen ARCH_PROP => "cf::arch";
70
71	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	93	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		94
73	# 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
74	# within the Safe compartment.	96	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	97	for my $pkg (qw(
		98	cf::global
		99	cf::object cf::object::player
		100	cf::client cf::player
		101	cf::arch cf::living
		102	cf::map cf::party cf::region
		103	)) {
76	no strict 'refs';	104	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	105	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	106	}
79		107
80	$Event::DIED = sub {	108	$Event::DIED = sub {
…		…
82	};	110	};
83		111
84	my %ext_pkg;	112	my %ext_pkg;
85	my @exts;	113	my @exts;
86	my @hook;	114	my @hook;
87	my %command;
88	my %extcmd;
89		115
90	#############################################################################	116	=head2 UTILITY FUNCTIONS
91	# utility functions	117
		118	=over 4
		119
		120	=cut
92		121
93	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 $json
		125
		126	Converts a JSON string into the corresponding perl data structure.
		127
		128	=cut
94		129
95	sub from_json($) {	130	sub from_json($) {
96	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	131	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
97	JSON::Syck::Load $_[0]	132	JSON::Syck::Load $_[0]
98	}	133	}
99		134
		135	=item $json = cf::to_json $ref
		136
		137	Converts a perl data structure into its JSON representation.
		138
		139	=cut
		140
100	sub to_json($) {	141	sub to_json($) {
101	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	142	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
102	JSON::Syck::Dump $_[0]	143	JSON::Syck::Dump $_[0]
103	}	144	}
104		145
		146	=back
		147
		148	=cut
		149
105	#############################################################################	150	#############################################################################
106	# "new" plug-in system
107		151
108	=item cf::object::attach ... # NYI	152	=head2 ATTACHABLE OBJECTS
109		153
110	=item cf::attach_global ...	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.
111		157
112	=item cf::attach_to_type $object_type, ...	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+).
113		161
114	=item cf::attach_to_objects ...	162	=over 4
115		163
116	=item cf::attach_to_players ...	164	=item $attachable->attach ($attachment, key => $value...)
117		165
118	=item cf::attach_to_maps ...	166	=item $attachable->detach ($attachment)
119		167
		168	Attach/detach a pre-registered attachment to a specific object and give it
		169	the specified key/value pairs as arguments.
		170
		171	Example, attach a minesweeper attachment to the given object, making it a
		172	10x10 minesweeper game:
		173
		174	$obj->attach (minesweeper => width => 10, height => 10);
		175
		176	=item $bool = $attachable->attached ($name)
		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
120	=item cf:register_attachment $name, ...	209	=item cf::CLASS::attachment $name, ...
121		210
122	prio => $number, # lower is earlier	211	Register an attachment by C<$name> through which attachable objects of the
123	on_xxx => \&cb,	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:
		218
		219	=over 4
		220
		221	=item prio => $number
		222
		223	Set the priority for all following handlers/hooks (unless overwritten
		224	by another C<prio> setting). Lower priority handlers get executed
		225	earlier. The default priority is C<0>, and many built-in handlers are
		226	registered at priority C<-1000>, so lower priorities should not be used
		227	unless you know what you are doing.
		228
		229	=item type => $type
		230
		231	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		232	given type of objects only (the additional parameter C<subtype> can be
		233	used to further limit to the given subtype).
		234
		235	=item on_I<event> => \&cb
		236
		237	Call the given code reference whenever the named event happens (event is
		238	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		239	handlers are recognised generally depends on the type of object these
		240	handlers attach to).
		241
		242	See F<include/eventinc.h> for the full list of events supported, and their
		243	class.
		244
124	package => package::,	245	=item package => package::
		246
		247	Look for sub functions of the name C<< on_I<event> >> in the given
		248	package and register them. Only handlers for eevents supported by the
		249	object/class are recognised.
		250
		251	=back
		252
		253	Example, define an attachment called "sockpuppet" that calls the given
		254	event handler when a monster attacks:
		255
		256	cf::object::attachment sockpuppet =>
		257	on_skill_attack => sub {
		258	my ($self, $victim) = @_;
		259	...
		260	}
		261	}
		262
		263	=item $attachable->valid
		264
		265	Just because you have a perl object does not mean that the corresponding
		266	C-level object still exists. If you try to access an object that has no
		267	valid C counterpart anymore you get an exception at runtime. This method
		268	can be used to test for existence of the C object part without causing an
		269	exception.
125		270
126	=cut	271	=cut
127		272
128	# the following variables are defined in .xs and must not be re-created	273	# the following variables are defined in .xs and must not be re-created
129	our @CB_GLOBAL = (); # registry for all global events	274	our @CB_GLOBAL = (); # registry for all global events
130	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	275	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
131	our @CB_PLAYER = ();	276	our @CB_PLAYER = ();
		277	our @CB_CLIENT = ();
132	our @CB_TYPE = (); # registry for type (cf-object class) based events	278	our @CB_TYPE = (); # registry for type (cf-object class) based events
133	our @CB_MAP = ();	279	our @CB_MAP = ();
134		280
135	my %attachment;	281	my %attachment;
136		282
137	sub _attach_cb($\%$$$) {	283	sub _attach_cb($$$$) {
138	my ($registry, $undo, $event, $prio, $cb) = @_;	284	my ($registry, $event, $prio, $cb) = @_;
139		285
140	use sort 'stable';	286	use sort 'stable';
141		287
142	$cb = [$prio, $cb];	288	$cb = [$prio, $cb];
143		289
144	@{$registry->[$event]} = sort	290	@{$registry->[$event]} = sort
145	{ $a->[0] cmp $b->[0] }	291	{ $a->[0] cmp $b->[0] }
146	@{$registry->[$event] || []}, $cb;	292	@{$registry->[$event] || []}, $cb;
147
148	push @{$undo->{cb}}, [$event, $cb];
149	}	293	}
150		294
151	# attach handles attaching event callbacks	295	# attach handles attaching event callbacks
152	# 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
153	# registry (== where the callback attaches to).	297	# registry (== where the callback attaches to).
154	sub _attach(\@$@) {	298	sub _attach {
155	my ($registry, $klass, @arg) = @_;	299	my ($registry, $klass, @arg) = @_;
156		300
		301	my $object_type;
157	my $prio = 0;	302	my $prio = 0;
158
159	my %undo = (
160	registry => $registry,
161	cb => [],
162	);
163
164	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;
165		304
166	while (@arg) {	305	while (@arg) {
167	my $type = shift @arg;	306	my $type = shift @arg;
168		307
169	if ($type eq "prio") {	308	if ($type eq "prio") {
170	$prio = shift @arg;	309	$prio = shift @arg;
171		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
172	} elsif ($type eq "package") {	320	} elsif ($type eq "package") {
173	my $pkg = shift @arg;	321	my $pkg = shift @arg;
174		322
175	while (my ($name, $id) = each %cb_id) {	323	while (my ($name, $id) = each %cb_id) {
176	if (my $cb = $pkg->can ($name)) {	324	if (my $cb = $pkg->can ($name)) {
177	_attach_cb $registry, %undo, $id, $prio, $cb;	325	_attach_cb $registry, $id, $prio, $cb;
178	}	326	}
179	}	327	}
180		328
181	} elsif (exists $cb_id{$type}) {	329	} elsif (exists $cb_id{$type}) {
182	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	330	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
183		331
184	} elsif (ref $type) {	332	} elsif (ref $type) {
185	warn "attaching objects not supported, ignoring.\n";	333	warn "attaching objects not supported, ignoring.\n";
186		334
187	} else {	335	} else {
188	shift @arg;	336	shift @arg;
189	warn "attach argument '$type' not supported, ignoring.\n";	337	warn "attach argument '$type' not supported, ignoring.\n";
190	}	338	}
191	}	339	}
192
193	\%undo
194	}	340	}
195		341
196	sub cf::object::attach {	342	sub _object_attach {
197	die;	343	my ($obj, $name, %arg) = @_;
198	}
199		344
200	sub attach_global {	345	return if exists $obj->{_attachment}{$name};
201	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
202	}
203		346
204	sub attach_to_type {	347	if (my $attach = $attachment{$name}) {
205	my $type = shift;	348	my $registry = $obj->registry;
206		349
207	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_	350	for (@$attach) {
208	}	351	my ($klass, @attach) = @$_;
		352	_attach $registry, $klass, @attach;
		353	}
209		354
210	sub attach_to_objects {	355	$obj->{$name} = \%arg;
211	_attach @CB_OBJECT, KLASS_OBJECT, @_	356	} else {
212	}	357	warn "object uses attachment '$name' that is not available, postponing.\n";
		358	}
213		359
214	sub attach_to_players {	360	$obj->{_attachment}{$name} = undef;
215	_attach @CB_PLAYER, KLASS_PLAYER, @_
216	}	361	}
217		362
218	sub attach_to_maps {	363	sub cf::attachable::attach {
219	_attach @CB_MAP, KLASS_MAP, @_	364	if (ref $_[0]) {
220	}	365	_object_attach @_;
		366	} else {
		367	_attach shift->_attach_registry, @_;
		368	}
		369	};
221		370
222	sub register_attachment {	371	# all those should be optimised
		372	sub cf::attachable::detach {
		373	my ($obj, $name) = @_;
		374
		375	if (ref $obj) {
		376	delete $obj->{_attachment}{$name};
		377	reattach ($obj);
		378	} else {
		379	Carp::croak "cannot, currently, detach class attachments";
		380	}
		381	};
		382
		383	sub cf::attachable::attached {
		384	my ($obj, $name) = @_;
		385
		386	exists $obj->{_attachment}{$name}
		387	}
		388
		389	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {
		390	eval "#line " . __LINE__ . " 'cf.pm'
		391	sub cf::\L$klass\E::_attach_registry {
		392	(\\\@CB_$klass, KLASS_$klass)
		393	}
		394
		395	sub cf::\L$klass\E::attachment {
223	my $name = shift;	396	my \$name = shift;
224		397
225	$attachment{$name} = [@_];	398	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		399	}
		400	";
		401	die if $@;
226	}	402	}
227		403
228	our $override;	404	our $override;
229	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?
230		406
…		…
244	for (@$callbacks) {	420	for (@$callbacks) {
245	eval { &{$_->[1]} };	421	eval { &{$_->[1]} };
246		422
247	if ($@) {	423	if ($@) {
248	warn "$@";	424	warn "$@";
249	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	425	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
250	override;	426	override;
251	}	427	}
252		428
253	return 1 if $override;	429	return 1 if $override;
254	}	430	}
255		431
256	0	432	0
257	}	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
258		448
259	#############################################################################	449	#############################################################################
260	# object support	450	# object support
261		451
262	sub instantiate {	452	sub instantiate {
263	my ($obj, $data) = @_;	453	my ($obj, $data) = @_;
264	my $registry = $obj->registry;
265		454
266	$data = from_json $data;	455	$data = from_json $data;
267		456
268	for (@$data) {	457	for (@$data) {
269	my ($pri, $name, @args) = @$_;	458	my ($name, $args) = @$_;
270		459
271	if (my $attach = $attachment{$name}) {	460	$obj->attach ($name, %{$args || {} });
272	_attach @$registry, KLASS_OBJECT, @$attach;
273
274	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
275	for (@$cb) {
276	eval { $_->[1]->($obj, @args); };
277	if ($@) {
278	warn "$@";
279	warn "... while processing '$name' instantiate with args <@args>\n";
280	}
281	}
282	}
283	} else {
284	warn "object uses attachment $name that is not available, postponing.\n";
285	}
286
287	push @{$obj->{_attachment}}, $name;
288	}	461	}
289	}	462	}
290		463
291	# basically do the same as instantiate, without calling instantiate	464	# basically do the same as instantiate, without calling instantiate
292	sub reattach {	465	sub reattach {
293	my ($obj) = @_;	466	my ($obj) = @_;
294	my $registry = $obj->registry;	467	my $registry = $obj->registry;
295		468
296	warn "reattach<@_, $_>\n";	469	@$registry = ();
297	}
298		470
299	attach_to_objects	471	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		472
		473	for my $name (keys %{ $obj->{_attachment} || {} }) {
		474	if (my $attach = $attachment{$name}) {
		475	for (@$attach) {
		476	my ($klass, @attach) = @$_;
		477	_attach $registry, $klass, @attach;
		478	}
		479	} else {
		480	warn "object uses attachment '$name' that is not available, postponing.\n";
		481	}
		482	}
		483	}
		484
		485	sub object_freezer_save {
		486	my ($filename, $rdata, $objs) = @_;
		487
		488	if (length $$rdata) {
		489	warn sprintf "saving %s (%d,%d)\n",
		490	$filename, length $$rdata, scalar @$objs;
		491
		492	if (open my $fh, ">:raw", "$filename~") {
		493	chmod SAVE_MODE, $fh;
		494	syswrite $fh, $$rdata;
		495	close $fh;
		496
		497	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		498	chmod SAVE_MODE, $fh;
		499	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
		500	close $fh;
		501	rename "$filename.pst~", "$filename.pst";
		502	} else {
		503	unlink "$filename.pst";
		504	}
		505
		506	rename "$filename~", $filename;
		507	} else {
		508	warn "FATAL: $filename~: $!\n";
		509	}
		510	} else {
		511	unlink $filename;
		512	unlink "$filename.pst";
		513	}
		514	}
		515
		516	sub object_freezer_as_string {
		517	my ($rdata, $objs) = @_;
		518
		519	use Data::Dumper;
		520
		521	$$rdata . Dumper $objs
		522	}
		523
		524	sub object_thawer_load {
		525	my ($filename) = @_;
		526
		527	local $/;
		528
		529	my $av;
		530
		531	#TODO: use sysread etc.
		532	if (open my $data, "<:raw:perlio", $filename) {
		533	$data = <$data>;
		534	if (open my $pst, "<:raw:perlio", "$filename.pst") {
		535	$av = eval { (Storable::thaw <$pst>)->{objs} };
		536	}
		537	return ($data, $av);
		538	}
		539
		540	()
		541	}
		542
		543	cf::object->attach (
300	prio => -1000000,	544	prio => -1000000,
301	on_clone => sub {	545	on_clone => sub {
302	my ($src, $dst) = @_;	546	my ($src, $dst) = @_;
303		547
304	@{$dst->registry} = @{$src->registry};	548	@{$dst->registry} = @{$src->registry};
305	warn "registry clone ", join ":", @{$src->registry};#d#
306		549
307	%$dst = %$src;	550	%$dst = %$src;
308		551
309	$dst->{_attachment} = [@{ $src->{_attachment} }]	552	%{$dst->{_attachment}} = %{$src->{_attachment}}
310	if exists $src->{_attachment};	553	if exists $src->{_attachment};
311
312	warn "clone<@_>\n";#d#
313	},	554	},
314	;	555	);
315		556
316	#############################################################################	557	#############################################################################
317	# old plug-in events	558	# command handling &c
318		559
319	sub inject_event {	560	=item cf::register_command $name => \&callback($ob,$args);
320	my $extension = shift;
321	my $event_code = shift;
322		561
323	my $cb = $hook[$event_code]{$extension}	562	Register a callback for execution when the client sends the user command
324	or return;	563	$name.
325		564
326	&$cb	565	=cut
327	}
328
329	sub inject_global_event {
330	my $event = shift;
331
332	my $cb = $hook[$event]
333	or return;
334
335	List::Util::max map &$_, values %$cb
336	}
337
338	sub inject_command {
339	my ($name, $obj, $params) = @_;
340
341	for my $cmd (@{ $command{$name} }) {
342	$cmd->[1]->($obj, $params);
343	}
344
345	-1
346	}
347		566
348	sub register_command {	567	sub register_command {
349	my ($name, $time, $cb) = @_;	568	my ($name, $cb) = @_;
350		569
351	my $caller = caller;	570	my $caller = caller;
352	#warn "registering command '$name/$time' to '$caller'";	571	#warn "registering command '$name/$time' to '$caller'";
353		572
354	push @{ $command{$name} }, [$time, $cb, $caller];	573	push @{ $COMMAND{$name} }, [$caller, $cb];
355	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
356	}	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
357		584
358	sub register_extcmd {	585	sub register_extcmd {
359	my ($name, $cb) = @_;	586	my ($name, $cb) = @_;
360		587
361	my $caller = caller;	588	my $caller = caller;
362	#warn "registering extcmd '$name' to '$caller'";	589	#warn "registering extcmd '$name' to '$caller'";
363		590
364	$extcmd{$name} = [$cb, $caller];	591	$EXTCMD{$name} = [$cb, $caller];
365	}	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	);
366		625
367	sub register {	626	sub register {
368	my ($base, $pkg) = @_;	627	my ($base, $pkg) = @_;
369		628
370	#TODO	629	#TODO
…		…
389	. "#line 1 \"$path\"\n{\n"	648	. "#line 1 \"$path\"\n{\n"
390	. (do { local $/; <$fh> })	649	. (do { local $/; <$fh> })
391	. "\n};\n1";	650	. "\n};\n1";
392		651
393	eval $source	652	eval $source
394	or die "$path: $@";	653	or die $@ ? "$path: $@\n"
		654	: "extension disabled.\n";
395		655
396	push @exts, $pkg;	656	push @exts, $pkg;
397	$ext_pkg{$base} = $pkg;	657	$ext_pkg{$base} = $pkg;
398		658
399	# no strict 'refs';	659	# no strict 'refs';
…		…
412	# for my $idx (0 .. $#PLUGIN_EVENT) {	672	# for my $idx (0 .. $#PLUGIN_EVENT) {
413	# delete $hook[$idx]{$pkg};	673	# delete $hook[$idx]{$pkg};
414	# }	674	# }
415		675
416	# remove commands	676	# remove commands
417	for my $name (keys %command) {	677	for my $name (keys %COMMAND) {
418	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	678	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
419		679
420	if (@cb) {	680	if (@cb) {
421	$command{$name} = \@cb;	681	$COMMAND{$name} = \@cb;
422	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
423	} else {	682	} else {
424	delete $command{$name};
425	delete $COMMAND{"$name\000"};	683	delete $COMMAND{$name};
426	}	684	}
427	}	685	}
428		686
429	# remove extcmds	687	# remove extcmds
430	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	688	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
431	delete $extcmd{$name};	689	delete $EXTCMD{$name};
432	}	690	}
433		691
434	if (my $cb = $pkg->can ("unload")) {	692	if (my $cb = $pkg->can ("unload")) {
435	eval {	693	eval {
436	$cb->($pkg);	694	$cb->($pkg);
…		…
440		698
441	Symbol::delete_package $pkg;	699	Symbol::delete_package $pkg;
442	}	700	}
443		701
444	sub load_extensions {	702	sub load_extensions {
445	my $LIBDIR = maps_directory "perl";
446
447	for my $ext (<$LIBDIR/*.ext>) {	703	for my $ext (<$LIBDIR/*.ext>) {
448	next unless -r $ext;	704	next unless -r $ext;
449	eval {	705	eval {
450	load_extension $ext;	706	load_extension $ext;
451	1	707	1
452	} or warn "$ext not loaded: $@";	708	} or warn "$ext not loaded: $@";
453	}	709	}
454	}	710	}
455		711
456	sub _perl_reload(&) {
457	my ($msg) = @_;
458
459	$msg->("reloading...");
460
461	eval {
462	# 1. cancel all watchers
463	$_->cancel for Event::all_watchers;
464
465	# 2. unload all extensions
466	for (@exts) {
467	$msg->("unloading <$_>");
468	unload_extension $_;
469	}
470
471	# 3. unload all modules loaded from $LIBDIR
472	while (my ($k, $v) = each %INC) {
473	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
474
475	$msg->("removing <$k>");
476	delete $INC{$k};
477
478	$k =~ s/\.pm$//;
479	$k =~ s/\//::/g;
480
481	if (my $cb = $k->can ("unload_module")) {
482	$cb->();
483	}
484
485	Symbol::delete_package $k;
486	}
487
488	# 4. get rid of safe::, as good as possible
489	Symbol::delete_package "safe::$_"
490	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
491
492	# 5. remove register_script_function callbacks
493	# TODO
494
495	# 6. unload cf.pm "a bit"
496	delete $INC{"cf.pm"};
497
498	# don't, removes xs symbols, too,
499	# and global variables created in xs
500	#Symbol::delete_package __PACKAGE__;
501
502	# 7. reload cf.pm
503	$msg->("reloading cf.pm");
504	require cf;
505	};
506	$msg->($@) if $@;
507
508	$msg->("reloaded");
509	};
510
511	sub perl_reload() {
512	_perl_reload {
513	warn $_[0];
514	print "$_[0]\n";
515	};
516	}
517
518	register_command "perl-reload", 0, sub {
519	my ($who, $arg) = @_;
520
521	if ($who->flag (FLAG_WIZ)) {
522	_perl_reload {
523	warn $_[0];
524	$who->message ($_[0]);
525	};
526	}
527	};
528
529	#############################################################################
530	# extcmd framework, basically convert ext <msg>
531	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
532
533	attach_to_players
534	on_extcmd => sub {
535	my ($pl, $buf) = @_;
536
537	my $msg = eval { from_json $buf };
538
539	if (ref $msg) {
540	if (my $cb = $extcmd{$msg->{msgtype}}) {
541	if (my %reply = $cb->[0]->($pl, $msg)) {
542	$pl->ext_reply ($msg->{msgid}, %reply);
543	}
544	}
545	} else {
546	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
547	}
548
549	cf::override;
550	},
551	;
552
553	#############################################################################	712	#############################################################################
554	# load/save/clean perl data associated with a map	713	# load/save/clean perl data associated with a map
555		714
556	*cf::mapsupport::on_clean = sub {	715	*cf::mapsupport::on_clean = sub {
557	my ($map) = @_;	716	my ($map) = @_;
558		717
559	my $path = $map->tmpname;	718	my $path = $map->tmpname;
560	defined $path or return;	719	defined $path or return;
561		720
562	unlink "$path.cfperl";	721	unlink "$path.pst";
563	};	722	};
564		723
565	*cf::mapsupport::on_swapin =
566	*cf::mapsupport::on_load = sub {
567	my ($map) = @_;
568
569	my $path = $map->tmpname;
570	$path = $map->path unless defined $path;
571
572	open my $fh, "<:raw", "$path.cfperl"
573	or return; # no perl data
574
575	my $data = Storable::thaw do { local $/; <$fh> };
576
577	$data->{version} <= 1
578	or return; # too new
579
580	$map->_set_obs ($data->{obs});
581	};
582
583	*cf::mapsupport::on_swapout = sub {
584	my ($map) = @_;
585
586	my $path = $map->tmpname;
587	$path = $map->path unless defined $path;
588
589	my $obs = $map->_get_obs;
590
591	if (defined $obs) {
592	open my $fh, ">:raw", "$path.cfperl"
593	or die "$path.cfperl: $!";
594
595	stat $path;
596
597	print $fh Storable::nfreeze {
598	size => (stat _)[7],
599	time => (stat _)[9],
600	version => 1,
601	obs => $obs,
602	};
603
604	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
605	} else {
606	unlink "$path.cfperl";
607	}
608	};
609
610	attach_to_maps prio => -10000, package => cf::mapsupport::;	724	cf::map->attach (prio => -10000, package => cf::mapsupport::);
611		725
612	#############################################################################	726	#############################################################################
613	# load/save perl data associated with player->ob objects	727	# load/save perl data associated with player->ob objects
614		728
615	sub all_objects(@) {	729	sub all_objects(@) {
616	@_, map all_objects ($_->inv), @_	730	@_, map all_objects ($_->inv), @_
617	}	731	}
618		732
619	attach_to_players	733	# TODO: compatibility cruft, remove when no longer needed
		734	cf::player->attach (
620	on_load => sub {	735	on_load => sub {
621	my ($pl, $path) = @_;	736	my ($pl, $path) = @_;
622		737
623	for my $o (all_objects $pl->ob) {	738	for my $o (all_objects $pl->ob) {
624	if (my $value = $o->get_ob_key_value ("_perl_data")) {	739	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
626		741
627	%$o = %{ Storable::thaw pack "H*", $value };	742	%$o = %{ Storable::thaw pack "H*", $value };
628	}	743	}
629	}	744	}
630	},	745	},
631	on_save => sub {	746	);
632	my ($pl, $path) = @_;
633
634	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)
635	for grep %$_, all_objects $pl->ob;
636	},
637	;
638		747
639	#############################################################################	748	#############################################################################
640	# 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
641		757
642	=item cf::player::exists $login	758	=item cf::player::exists $login
643		759
644	Returns true when the given account exists.	760	Returns true when the given account exists.
645		761
…		…
648	sub cf::player::exists($) {	764	sub cf::player::exists($) {
649	cf::player::find $_[0]	765	cf::player::find $_[0]
650	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;
651	}	767	}
652		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
653	=item $player->reply ($npc, $msg[, $flags])	789	=item $player_object->reply ($npc, $msg[, $flags])
654		790
655	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	791	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
656	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
657	dialogue with the given NPC character.	793	dialogue with the given NPC character.
658		794
659	=cut	795	=cut
660		796
661	# rough implementation of a future "reply" method that works	797	# rough implementation of a future "reply" method that works
662	# with dialog boxes.	798	# with dialog boxes.
		799	#TODO: the first argument must go, split into a $npc->reply_to ( method
663	sub cf::object::player::reply($$$;$) {	800	sub cf::object::player::reply($$$;$) {
664	my ($self, $npc, $msg, $flags) = @_;	801	my ($self, $npc, $msg, $flags) = @_;
665		802
666	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	803	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
667		804
…		…
671	$msg = $npc->name . " says: $msg" if $npc;	808	$msg = $npc->name . " says: $msg" if $npc;
672	$self->message ($msg, $flags);	809	$self->message ($msg, $flags);
673	}	810	}
674	}	811	}
675		812
676	=item $player->ext_reply ($msgid, $msgtype, %msg)	813	=item $player_object->may ("access")
677		814
678	Sends an ext reply to the player.	815	Returns wether the given player is authorized to access resource "access"
		816	(e.g. "command_wizcast").
679		817
680	=cut	818	=cut
681		819
682	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) if $ns->state == ST_CUSTOM;
		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 {
683	my ($self, $id, %msg) = @_;	906	my ($self, $cb) = @_;
684		907
685	$msg{msgid} = $id;	908	my $coro; $coro = async {
		909	eval {
		910	$cb->();
		911	};
		912	warn $@ if $@;
		913	delete $self->{_coro}{$coro+0};
		914	};
686		915
687	$self->send ("ext " . to_json \%msg);	916	$self->{_coro}{$coro+0} = $coro;
688	}	917	}
689		918
690	#############################################################################	919	cf::client->attach (
691	# map scripting support	920	on_destroy => sub {
		921	my ($ns) = @_;
		922
		923	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		924	},
		925	);
		926
		927	=back
		928
		929
		930	=head2 SAFE SCRIPTING
		931
		932	Functions that provide a safe environment to compile and execute
		933	snippets of perl code without them endangering the safety of the server
		934	itself. Looping constructs, I/O operators and other built-in functionality
		935	is not available in the safe scripting environment, and the number of
		936	functions and methods that can be called is greatly reduced.
		937
		938	=cut
692		939
693	our $safe = new Safe "safe";	940	our $safe = new Safe "safe";
694	our $safe_hole = new Safe::Hole;	941	our $safe_hole = new Safe::Hole;
695		942
696	$SIG{FPE} = 'IGNORE';	943	$SIG{FPE} = 'IGNORE';
697		944
698	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	945	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
699		946
700	# here we export the classes and methods available to script code	947	# here we export the classes and methods available to script code
701		948
		949	=pod
		950
		951	The following fucntions and emthods are available within a safe environment:
		952
		953	cf::object contr pay_amount pay_player map
		954	cf::object::player player
		955	cf::player peaceful
		956	cf::map trigger
		957
		958	=cut
		959
702	for (	960	for (
703	["cf::object" => qw(contr pay_amount pay_player)],	961	["cf::object" => qw(contr pay_amount pay_player map)],
704	["cf::object::player" => qw(player)],	962	["cf::object::player" => qw(player)],
705	["cf::player" => qw(peaceful)],	963	["cf::player" => qw(peaceful)],
		964	["cf::map" => qw(trigger)],
706	) {	965	) {
707	no strict 'refs';	966	no strict 'refs';
708	my ($pkg, @funs) = @$_;	967	my ($pkg, @funs) = @$_;
709	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	968	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
710	for @funs;	969	for @funs;
711	}	970	}
		971
		972	=over 4
		973
		974	=item @retval = safe_eval $code, [var => value, ...]
		975
		976	Compiled and executes the given perl code snippet. additional var/value
		977	pairs result in temporary local (my) scalar variables of the given name
		978	that are available in the code snippet. Example:
		979
		980	my $five = safe_eval '$first + $second', first => 1, second => 4;
		981
		982	=cut
712		983
713	sub safe_eval($;@) {	984	sub safe_eval($;@) {
714	my ($code, %vars) = @_;	985	my ($code, %vars) = @_;
715		986
716	my $qcode = $code;	987	my $qcode = $code;
…		…
739	}	1010	}
740		1011
741	wantarray ? @res : $res[0]	1012	wantarray ? @res : $res[0]
742	}	1013	}
743		1014
		1015	=item cf::register_script_function $function => $cb
		1016
		1017	Register a function that can be called from within map/npc scripts. The
		1018	function should be reasonably secure and should be put into a package name
		1019	like the extension.
		1020
		1021	Example: register a function that gets called whenever a map script calls
		1022	C<rent::overview>, as used by the C<rent> extension.
		1023
		1024	cf::register_script_function "rent::overview" => sub {
		1025	...
		1026	};
		1027
		1028	=cut
		1029
744	sub register_script_function {	1030	sub register_script_function {
745	my ($fun, $cb) = @_;	1031	my ($fun, $cb) = @_;
746		1032
747	no strict 'refs';	1033	no strict 'refs';
748	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1034	*{"safe::$fun"} = $safe_hole->wrap ($cb);
749	}	1035	}
750		1036
		1037	=back
		1038
		1039	=cut
		1040
		1041	#############################################################################
		1042
		1043	=head2 EXTENSION DATABASE SUPPORT
		1044
		1045	Crossfire maintains a very simple database for extension use. It can
		1046	currently store anything that can be serialised using Storable, which
		1047	excludes objects.
		1048
		1049	The parameter C<$family> should best start with the name of the extension
		1050	using it, it should be unique.
		1051
		1052	=over 4
		1053
		1054	=item $hashref = cf::db_get $family
		1055
		1056	Return a hashref for use by the extension C<$family>, which can be
		1057	modified. After modifications, you have to call C<cf::db_dirty> or
		1058	C<cf::db_sync>.
		1059
		1060	=item $value = cf::db_get $family => $key
		1061
		1062	Returns a single value from the database
		1063
		1064	=item cf::db_put $family => $hashref
		1065
		1066	Stores the given family hashref into the database. Updates are delayed, if
		1067	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1068
		1069	=item cf::db_put $family => $key => $value
		1070
		1071	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1072	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1073
		1074	=item cf::db_dirty
		1075
		1076	Marks the database as dirty, to be updated at a later time.
		1077
		1078	=item cf::db_sync
		1079
		1080	Immediately write the database to disk I<if it is dirty>.
		1081
		1082	=cut
		1083
		1084	our $DB;
		1085
		1086	{
		1087	my $path = cf::localdir . "/database.pst";
		1088
		1089	sub db_load() {
		1090	warn "loading database $path\n";#d# remove later
		1091	$DB = stat $path ? Storable::retrieve $path : { };
		1092	}
		1093
		1094	my $pid;
		1095
		1096	sub db_save() {
		1097	warn "saving database $path\n";#d# remove later
		1098	waitpid $pid, 0 if $pid;
		1099	if (0 == ($pid = fork)) {
		1100	$DB->{_meta}{version} = 1;
		1101	Storable::nstore $DB, "$path~";
		1102	rename "$path~", $path;
		1103	cf::_exit 0 if defined $pid;
		1104	}
		1105	}
		1106
		1107	my $dirty;
		1108
		1109	sub db_sync() {
		1110	db_save if $dirty;
		1111	undef $dirty;
		1112	}
		1113
		1114	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1115	db_sync;
		1116	});
		1117
		1118	sub db_dirty() {
		1119	$dirty = 1;
		1120	$idle->start;
		1121	}
		1122
		1123	sub db_get($;$) {
		1124	@_ >= 2
		1125	? $DB->{$_[0]}{$_[1]}
		1126	: ($DB->{$_[0]} ||= { })
		1127	}
		1128
		1129	sub db_put($$;$) {
		1130	if (@_ >= 3) {
		1131	$DB->{$_[0]}{$_[1]} = $_[2];
		1132	} else {
		1133	$DB->{$_[0]} = $_[1];
		1134	}
		1135	db_dirty;
		1136	}
		1137
		1138	cf::global->attach (
		1139	prio => 10000,
		1140	on_cleanup => sub {
		1141	db_sync;
		1142	},
		1143	);
		1144	}
		1145
751	#############################################################################	1146	#############################################################################
752	# the server's main()	1147	# the server's main()
753		1148
		1149	sub cfg_load {
		1150	open my $fh, "<:utf8", cf::confdir . "/config"
		1151	or return;
		1152
		1153	local $/;
		1154	*CFG = YAML::Syck::Load <$fh>;
		1155	}
		1156
754	sub main {	1157	sub main {
		1158	cfg_load;
		1159	db_load;
		1160	load_extensions;
755	Event::loop;	1161	Event::loop;
756	}	1162	}
757		1163
758	#############################################################################	1164	#############################################################################
759	# initialisation	1165	# initialisation
760		1166
		1167	sub _perl_reload(&) {
		1168	my ($msg) = @_;
		1169
		1170	$msg->("reloading...");
		1171
		1172	eval {
		1173	# cancel all watchers
		1174	for (Event::all_watchers) {
		1175	$_->cancel if $_->data & WF_AUTOCANCEL;
		1176	}
		1177
		1178	# unload all extensions
		1179	for (@exts) {
		1180	$msg->("unloading <$_>");
		1181	unload_extension $_;
		1182	}
		1183
		1184	# unload all modules loaded from $LIBDIR
		1185	while (my ($k, $v) = each %INC) {
		1186	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1187
		1188	$msg->("removing <$k>");
		1189	delete $INC{$k};
		1190
		1191	$k =~ s/\.pm$//;
		1192	$k =~ s/\//::/g;
		1193
		1194	if (my $cb = $k->can ("unload_module")) {
		1195	$cb->();
		1196	}
		1197
		1198	Symbol::delete_package $k;
		1199	}
		1200
		1201	# sync database to disk
		1202	cf::db_sync;
		1203
		1204	# get rid of safe::, as good as possible
		1205	Symbol::delete_package "safe::$_"
		1206	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1207
		1208	# remove register_script_function callbacks
		1209	# TODO
		1210
		1211	# unload cf.pm "a bit"
		1212	delete $INC{"cf.pm"};
		1213
		1214	# don't, removes xs symbols, too,
		1215	# and global variables created in xs
		1216	#Symbol::delete_package __PACKAGE__;
		1217
		1218	# reload cf.pm
		1219	$msg->("reloading cf.pm");
		1220	require cf;
		1221
		1222	# load config and database again
		1223	cf::cfg_load;
		1224	cf::db_load;
		1225
		1226	# load extensions
		1227	$msg->("load extensions");
		1228	cf::load_extensions;
		1229
		1230	# reattach attachments to objects
		1231	$msg->("reattach");
		1232	_global_reattach;
		1233	};
		1234	$msg->($@) if $@;
		1235
		1236	$msg->("reloaded");
		1237	};
		1238
		1239	sub perl_reload() {
		1240	_perl_reload {
		1241	warn $_[0];
		1242	print "$_[0]\n";
		1243	};
		1244	}
		1245
761	register "<global>", __PACKAGE__;	1246	register "<global>", __PACKAGE__;
762		1247
		1248	register_command "perl-reload" => sub {
		1249	my ($who, $arg) = @_;
		1250
		1251	if ($who->flag (FLAG_WIZ)) {
		1252	_perl_reload {
		1253	warn $_[0];
		1254	$who->message ($_[0]);
		1255	};
		1256	}
		1257	};
		1258
763	unshift @INC, $LIBDIR;	1259	unshift @INC, $LIBDIR;
764		1260
765	load_extensions;
766
767	$TICK_WATCHER = Event->timer (	1261	$TICK_WATCHER = Event->timer (
768	prio => 1,	1262	prio => 0,
769	at => $NEXT_TICK || 1,	1263	at => $NEXT_TICK || 1,
		1264	data => WF_AUTOCANCEL,
770	cb => sub {	1265	cb => sub {
771	cf::server_tick; # one server iteration	1266	cf::server_tick; # one server iteration
772		1267
773	my $NOW = Event::time;	1268	my $NOW = Event::time;
774	$NEXT_TICK += $TICK;	1269	$NEXT_TICK += $TICK;
775		1270
776	# if we are delayed by four ticks, skip them all	1271	# if we are delayed by four ticks or more, skip them all
777	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1272	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
778		1273
779	$TICK_WATCHER->at ($NEXT_TICK);	1274	$TICK_WATCHER->at ($NEXT_TICK);
780	$TICK_WATCHER->start;	1275	$TICK_WATCHER->start;
781	},	1276	},
782	);	1277	);
783		1278
		1279	IO::AIO::max_poll_time $TICK * 0.2;
		1280
		1281	Event->io (fd => IO::AIO::poll_fileno,
		1282	poll => 'r',
		1283	prio => 5,
		1284	data => WF_AUTOCANCEL,
		1285	cb => \&IO::AIO::poll_cb);
		1286
784	1	1287	1
785		1288

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