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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 1.102 by root, Wed Dec 27 15:20:54 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
17	our @EVENT;	36	our @EVENT;
18	our %PROP_TYPE;	37	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;
20	our $LIBDIR = maps_directory "perl";
21		38
22	our $TICK = MAX_TIME * 1e-6;	39	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	40	our $TICK_WATCHER;
24	our $NEXT_TICK;	41	our $NEXT_TICK;
		42
		43	our %CFG;
		44
		45	our $UPTIME; $UPTIME ||= time;
		46
		47	#############################################################################
		48
		49	=head2 GLOBAL VARIABLES
		50
		51	=over 4
		52
		53	=item $cf::UPTIME
		54
		55	The timestamp of the server start (so not actually an uptime).
		56
		57	=item $cf::LIBDIR
		58
		59	The perl library directory, where extensions and cf-specific modules can
		60	be found. It will be added to C<@INC> automatically.
		61
		62	=item $cf::TICK
		63
		64	The interval between server ticks, in seconds.
		65
		66	=item %cf::CFG
		67
		68	Configuration for the server, loaded from C</etc/crossfire/config>, or
		69	from wherever your confdir points to.
		70
		71	=back
		72
		73	=cut
25		74
26	BEGIN {	75	BEGIN {
27	*CORE::GLOBAL::warn = sub {	76	*CORE::GLOBAL::warn = sub {
28	my $msg = join "", @_;	77	my $msg = join "", @_;
29	$msg .= "\n"	78	$msg .= "\n"
…		…
32	print STDERR "cfperl: $msg";	81	print STDERR "cfperl: $msg";
33	LOG llevError, "cfperl: $msg";	82	LOG llevError, "cfperl: $msg";
34	};	83	};
35	}	84	}
36		85
37	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
38		87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
39	# generate property mutators	88	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
40	sub prop_gen {	89	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
41	my ($prefix, $class) = @_;	90	@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';	91	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72		92
73	# we bless all objects into (empty) derived classes to force a method lookup	93	# we bless all objects into (empty) derived classes to force a method lookup
74	# within the Safe compartment.	94	# within the Safe compartment.
75	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {	95	for my $pkg (qw(
		96	cf::global cf::attachable
		97	cf::object cf::object::player
		98	cf::client cf::player
		99	cf::arch cf::living
		100	cf::map cf::party cf::region
		101	)) {
76	no strict 'refs';	102	no strict 'refs';
77	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	103	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
78	}	104	}
79		105
80	$Event::DIED = sub {	106	$Event::DIED = sub {
…		…
82	};	108	};
83		109
84	my %ext_pkg;	110	my %ext_pkg;
85	my @exts;	111	my @exts;
86	my @hook;	112	my @hook;
87	my %command;
88	my %extcmd;
89		113
90	#############################################################################	114	=head2 UTILITY FUNCTIONS
91	# utility functions	115
		116	=over 4
		117
		118	=cut
92		119
93	use JSON::Syck (); # TODO# replace by JSON::PC once working	120	use JSON::Syck (); # TODO# replace by JSON::PC once working
		121
		122	=item $ref = cf::from_json $json
		123
		124	Converts a JSON string into the corresponding perl data structure.
		125
		126	=cut
94		127
95	sub from_json($) {	128	sub from_json($) {
96	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	129	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
97	JSON::Syck::Load $_[0]	130	JSON::Syck::Load $_[0]
98	}	131	}
99		132
		133	=item $json = cf::to_json $ref
		134
		135	Converts a perl data structure into its JSON representation.
		136
		137	=cut
		138
100	sub to_json($) {	139	sub to_json($) {
101	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
102	JSON::Syck::Dump $_[0]	141	JSON::Syck::Dump $_[0]
103	}	142	}
104		143
		144	=back
		145
		146	=cut
		147
105	#############################################################################	148	#############################################################################
106	# "new" plug-in system
107		149
108	=item cf::object::attach ... # NYI	150	=head2 ATTACHABLE OBJECTS
109		151
110	=item cf::attach_global ...	152	Many objects in crossfire are so-called attachable objects. That means you can
		153	attach callbacks/event handlers (a collection of which is called an "attachment")
		154	to it. All such attachable objects support the following methods.
111		155
112	=item cf::attach_to_type $object_type, ...	156	In the following description, CLASS can be any of C<global>, C<object>
		157	C<player>, C<client> or C<map> (i.e. the attachable objects in
		158	crossfire+).
113		159
114	=item cf::attach_to_objects ...	160	=over 4
115		161
116	=item cf::attach_to_players ...	162	=item $attachable->attach ($attachment, key => $value...)
117		163
118	=item cf::attach_to_maps ...	164	=item $attachable->detach ($attachment)
119		165
		166	Attach/detach a pre-registered attachment to a specific object and give it
		167	the specified key/value pairs as arguments.
		168
		169	Example, attach a minesweeper attachment to the given object, making it a
		170	10x10 minesweeper game:
		171
		172	$obj->attach (minesweeper => width => 10, height => 10);
		173
		174	=item $bool = $attachable->attached ($name)
		175
		176	Checks wether the named attachment is currently attached to the object.
		177
		178	=item cf::CLASS->attach ...
		179
		180	=item cf::CLASS->detach ...
		181
		182	Define an anonymous attachment and attach it to all objects of the given
		183	CLASS. See the next function for an explanation of its arguments.
		184
		185	You can attach to global events by using the C<cf::global> class.
		186
		187	Example, log all player logins:
		188
		189	cf::player->attach (
		190	on_login => sub {
		191	my ($pl) = @_;
		192	...
		193	},
		194	);
		195
		196	Example, attach to the jeweler skill:
		197
		198	cf::object->attach (
		199	type => cf::SKILL,
		200	subtype => cf::SK_JEWELER,
		201	on_use_skill => sub {
		202	my ($sk, $ob, $part, $dir, $msg) = @_;
		203	...
		204	},
		205	);
		206
120	=item cf:register_attachment $name, ...	207	=item cf::CLASS::attachment $name, ...
121		208
122	prio => $number, # lower is earlier	209	Register an attachment by C<$name> through which attachable objects of the
123	on_xxx => \&cb,	210	given CLASS can refer to this attachment.
		211
		212	Some classes such as crossfire maps and objects can specify attachments
		213	that are attached at load/instantiate time, thus the need for a name.
		214
		215	These calls expect any number of the following handler/hook descriptions:
		216
		217	=over 4
		218
		219	=item prio => $number
		220
		221	Set the priority for all following handlers/hooks (unless overwritten
		222	by another C<prio> setting). Lower priority handlers get executed
		223	earlier. The default priority is C<0>, and many built-in handlers are
		224	registered at priority C<-1000>, so lower priorities should not be used
		225	unless you know what you are doing.
		226
		227	=item type => $type
		228
		229	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		230	given type of objects only (the additional parameter C<subtype> can be
		231	used to further limit to the given subtype).
		232
		233	=item on_I<event> => \&cb
		234
		235	Call the given code reference whenever the named event happens (event is
		236	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		237	handlers are recognised generally depends on the type of object these
		238	handlers attach to).
		239
		240	See F<include/eventinc.h> for the full list of events supported, and their
		241	class.
		242
124	package => package::,	243	=item package => package::
		244
		245	Look for sub functions of the name C<< on_I<event> >> in the given
		246	package and register them. Only handlers for eevents supported by the
		247	object/class are recognised.
		248
		249	=back
		250
		251	Example, define an attachment called "sockpuppet" that calls the given
		252	event handler when a monster attacks:
		253
		254	cf::object::attachment sockpuppet =>
		255	on_skill_attack => sub {
		256	my ($self, $victim) = @_;
		257	...
		258	}
		259	}
		260
		261	=item $attachable->valid
		262
		263	Just because you have a perl object does not mean that the corresponding
		264	C-level object still exists. If you try to access an object that has no
		265	valid C counterpart anymore you get an exception at runtime. This method
		266	can be used to test for existence of the C object part without causing an
		267	exception.
125		268
126	=cut	269	=cut
127		270
128	# the following variables are defined in .xs and must not be re-created	271	# the following variables are defined in .xs and must not be re-created
129	our @CB_GLOBAL = (); # registry for all global events	272	our @CB_GLOBAL = (); # registry for all global events
		273	our @CB_ATTACHABLE = (); # registry for all attachables
130	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	274	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
131	our @CB_PLAYER = ();	275	our @CB_PLAYER = ();
		276	our @CB_CLIENT = ();
132	our @CB_TYPE = (); # registry for type (cf-object class) based events	277	our @CB_TYPE = (); # registry for type (cf-object class) based events
133	our @CB_MAP = ();	278	our @CB_MAP = ();
134		279
135	my %attachment;	280	my %attachment;
136		281
137	sub _attach_cb($\%$$$) {	282	sub _attach_cb($$$$) {
138	my ($registry, $undo, $event, $prio, $cb) = @_;	283	my ($registry, $event, $prio, $cb) = @_;
139		284
140	use sort 'stable';	285	use sort 'stable';
141		286
142	$cb = [$prio, $cb];	287	$cb = [$prio, $cb];
143		288
144	@{$registry->[$event]} = sort	289	@{$registry->[$event]} = sort
145	{ $a->[0] cmp $b->[0] }	290	{ $a->[0] cmp $b->[0] }
146	@{$registry->[$event] || []}, $cb;	291	@{$registry->[$event] || []}, $cb;
147
148	push @{$undo->{cb}}, [$event, $cb];
149	}	292	}
		293
		294	# hack
		295	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
150		296
151	# attach handles attaching event callbacks	297	# attach handles attaching event callbacks
152	# the only thing the caller has to do is pass the correct	298	# the only thing the caller has to do is pass the correct
153	# registry (== where the callback attaches to).	299	# registry (== where the callback attaches to).
154	sub _attach(\@$@) {	300	sub _attach {
155	my ($registry, $klass, @arg) = @_;	301	my ($registry, $klass, @arg) = @_;
156		302
		303	my $object_type;
157	my $prio = 0;	304	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;	305	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		306
		307	#TODO: get rid of this hack
		308	if ($attachable_klass{$klass}) {
		309	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		310	}
165		311
166	while (@arg) {	312	while (@arg) {
167	my $type = shift @arg;	313	my $type = shift @arg;
168		314
169	if ($type eq "prio") {	315	if ($type eq "prio") {
170	$prio = shift @arg;	316	$prio = shift @arg;
171		317
		318	} elsif ($type eq "type") {
		319	$object_type = shift @arg;
		320	$registry = $CB_TYPE[$object_type] ||= [];
		321
		322	} elsif ($type eq "subtype") {
		323	defined $object_type or Carp::croak "subtype specified without type";
		324	my $object_subtype = shift @arg;
		325	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		326
172	} elsif ($type eq "package") {	327	} elsif ($type eq "package") {
173	my $pkg = shift @arg;	328	my $pkg = shift @arg;
174		329
175	while (my ($name, $id) = each %cb_id) {	330	while (my ($name, $id) = each %cb_id) {
176	if (my $cb = $pkg->can ($name)) {	331	if (my $cb = $pkg->can ($name)) {
177	_attach_cb $registry, %undo, $id, $prio, $cb;	332	_attach_cb $registry, $id, $prio, $cb;
178	}	333	}
179	}	334	}
180		335
181	} elsif (exists $cb_id{$type}) {	336	} elsif (exists $cb_id{$type}) {
182	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	337	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
183		338
184	} elsif (ref $type) {	339	} elsif (ref $type) {
185	warn "attaching objects not supported, ignoring.\n";	340	warn "attaching objects not supported, ignoring.\n";
186		341
187	} else {	342	} else {
188	shift @arg;	343	shift @arg;
189	warn "attach argument '$type' not supported, ignoring.\n";	344	warn "attach argument '$type' not supported, ignoring.\n";
190	}	345	}
191	}	346	}
192
193	\%undo
194	}	347	}
195		348
196	sub cf::object::attach {	349	sub _object_attach {
197	die;	350	my ($obj, $name, %arg) = @_;
198	}
199		351
200	sub attach_global {	352	return if exists $obj->{_attachment}{$name};
201	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
202	}
203		353
204	sub attach_to_type {	354	if (my $attach = $attachment{$name}) {
205	my $type = shift;	355	my $registry = $obj->registry;
206		356
207	_attach @{$CB_TYPE[$type]}, KLASS_OBJECT, @_	357	for (@$attach) {
208	}	358	my ($klass, @attach) = @$_;
		359	_attach $registry, $klass, @attach;
		360	}
209		361
210	sub attach_to_objects {	362	$obj->{$name} = \%arg;
211	_attach @CB_OBJECT, KLASS_OBJECT, @_	363	} else {
212	}	364	warn "object uses attachment '$name' that is not available, postponing.\n";
		365	}
213		366
214	sub attach_to_players {	367	$obj->{_attachment}{$name} = undef;
215	_attach @CB_PLAYER, KLASS_PLAYER, @_
216	}	368	}
217		369
218	sub attach_to_maps {	370	sub cf::attachable::attach {
219	_attach @CB_MAP, KLASS_MAP, @_	371	if (ref $_[0]) {
220	}	372	_object_attach @_;
		373	} else {
		374	_attach shift->_attach_registry, @_;
		375	}
		376	};
221		377
222	sub register_attachment {	378	# all those should be optimised
		379	sub cf::attachable::detach {
		380	my ($obj, $name) = @_;
		381
		382	if (ref $obj) {
		383	delete $obj->{_attachment}{$name};
		384	reattach ($obj);
		385	} else {
		386	Carp::croak "cannot, currently, detach class attachments";
		387	}
		388	};
		389
		390	sub cf::attachable::attached {
		391	my ($obj, $name) = @_;
		392
		393	exists $obj->{_attachment}{$name}
		394	}
		395
		396	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		397	eval "#line " . __LINE__ . " 'cf.pm'
		398	sub cf::\L$klass\E::_attach_registry {
		399	(\\\@CB_$klass, KLASS_$klass)
		400	}
		401
		402	sub cf::\L$klass\E::attachment {
223	my $name = shift;	403	my \$name = shift;
224		404
225	$attachment{$name} = [@_];	405	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		406	}
		407	";
		408	die if $@;
226	}	409	}
227		410
228	our $override;	411	our $override;
229	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	412	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
230		413
…		…
244	for (@$callbacks) {	427	for (@$callbacks) {
245	eval { &{$_->[1]} };	428	eval { &{$_->[1]} };
246		429
247	if ($@) {	430	if ($@) {
248	warn "$@";	431	warn "$@";
249	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	432	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
250	override;	433	override;
251	}	434	}
252		435
253	return 1 if $override;	436	return 1 if $override;
254	}	437	}
255		438
256	0	439	0
257	}	440	}
		441
		442	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		443
		444	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		445
		446	Generate an object-specific event with the given arguments.
		447
		448	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		449	removed in future versions), and there is no public API to access override
		450	results (if you must, access C<@cf::invoke_results> directly).
		451
		452	=back
		453
		454	=cut
258		455
259	#############################################################################	456	#############################################################################
260	# object support	457	# object support
261		458
262	sub instantiate {	459	sub reattach {
		460	# basically do the same as instantiate, without calling instantiate
263	my ($obj, $data) = @_;	461	my ($obj) = @_;
		462
264	my $registry = $obj->registry;	463	my $registry = $obj->registry;
265		464
266	$data = from_json $data;	465	@$registry = ();
267		466
268	for (@$data) {	467	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
269	my ($pri, $name, @args) = @$_;
270		468
		469	for my $name (keys %{ $obj->{_attachment} || {} }) {
271	if (my $attach = $attachment{$name}) {	470	if (my $attach = $attachment{$name}) {
272	_attach @$registry, KLASS_OBJECT, @$attach;
273
274	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
275	for (@$cb) {	471	for (@$attach) {
276	eval { $_->[1]->($obj, @args); };	472	my ($klass, @attach) = @$_;
277	if ($@) {	473	_attach $registry, $klass, @attach;
278	warn "$@";
279	warn "... while processing '$name' instantiate with args <@args>\n";
280	}	474	}
		475	} else {
		476	warn "object uses attachment '$name' that is not available, postponing.\n";
		477	}
		478	}
		479	}
		480
		481	cf::attachable->attach (
		482	prio => -1000000,
		483	on_instantiate => sub {
		484	my ($obj, $data) = @_;
		485
		486	$data = from_json $data;
		487
		488	for (@$data) {
		489	my ($name, $args) = @$_;
		490
		491	$obj->attach ($name, %{$args || {} });
		492	}
		493	},
		494	on_reattach => \&reattach,
		495	on_clone => sub {
		496	my ($src, $dst) = @_;
		497
		498	@{$dst->registry} = @{$src->registry};
		499
		500	%$dst = %$src;
		501
		502	%{$dst->{_attachment}} = %{$src->{_attachment}}
		503	if exists $src->{_attachment};
		504	},
		505	);
		506
		507	sub object_freezer_save {
		508	my ($filename, $rdata, $objs) = @_;
		509
		510	if (length $$rdata) {
		511	warn sprintf "saving %s (%d,%d)\n",
		512	$filename, length $$rdata, scalar @$objs;
		513
		514	if (open my $fh, ">:raw", "$filename~") {
		515	chmod SAVE_MODE, $fh;
		516	syswrite $fh, $$rdata;
		517	close $fh;
		518
		519	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		520	chmod SAVE_MODE, $fh;
		521	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
		522	close $fh;
		523	rename "$filename.pst~", "$filename.pst";
		524	} else {
		525	unlink "$filename.pst";
		526	}
		527
		528	rename "$filename~", $filename;
		529	} else {
		530	warn "FATAL: $filename~: $!\n";
		531	}
		532	} else {
		533	unlink $filename;
		534	unlink "$filename.pst";
		535	}
		536	}
		537
		538	sub object_freezer_as_string {
		539	my ($rdata, $objs) = @_;
		540
		541	use Data::Dumper;
		542
		543	$$rdata . Dumper $objs
		544	}
		545
		546	sub object_thawer_load {
		547	my ($filename) = @_;
		548
		549	local $/;
		550
		551	my $av;
		552
		553	#TODO: use sysread etc.
		554	if (open my $data, "<:raw:perlio", $filename) {
		555	$data = <$data>;
		556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
		557	$av = eval { (Storable::thaw <$pst>)->{objs} };
		558	}
		559	return ($data, $av);
		560	}
		561
		562	()
		563	}
		564
		565	#############################################################################
		566	# command handling &c
		567
		568	=item cf::register_command $name => \&callback($ob,$args);
		569
		570	Register a callback for execution when the client sends the user command
		571	$name.
		572
		573	=cut
		574
		575	sub register_command {
		576	my ($name, $cb) = @_;
		577
		578	my $caller = caller;
		579	#warn "registering command '$name/$time' to '$caller'";
		580
		581	push @{ $COMMAND{$name} }, [$caller, $cb];
		582	}
		583
		584	=item cf::register_extcmd $name => \&callback($pl,$packet);
		585
		586	Register a callbackf ro execution when the client sends an extcmd packet.
		587
		588	If the callback returns something, it is sent back as if reply was being
		589	called.
		590
		591	=cut
		592
		593	sub register_extcmd {
		594	my ($name, $cb) = @_;
		595
		596	my $caller = caller;
		597	#warn "registering extcmd '$name' to '$caller'";
		598
		599	$EXTCMD{$name} = [$cb, $caller];
		600	}
		601
		602	cf::player->attach (
		603	on_command => sub {
		604	my ($pl, $name, $params) = @_;
		605
		606	my $cb = $COMMAND{$name}
		607	or return;
		608
		609	for my $cmd (@$cb) {
		610	$cmd->[1]->($pl->ob, $params);
		611	}
		612
		613	cf::override;
		614	},
		615	on_extcmd => sub {
		616	my ($pl, $buf) = @_;
		617
		618	my $msg = eval { from_json $buf };
		619
		620	if (ref $msg) {
		621	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		622	if (my %reply = $cb->[0]->($pl, $msg)) {
		623	$pl->ext_reply ($msg->{msgid}, %reply);
281	}	624	}
282	}	625	}
283	} else {	626	} else {
284	warn "object uses attachment $name that is not available, postponing.\n";	627	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
285	}	628	}
286		629
287	push @{$obj->{_attachment}}, $name;	630	cf::override;
288	}
289	}
290
291	# basically do the same as instantiate, without calling instantiate
292	sub reattach {
293	my ($obj) = @_;
294	my $registry = $obj->registry;
295
296	warn "reattach<@_, $_>\n";
297	}
298
299	attach_to_objects
300	prio => -1000000,
301	on_clone => sub {
302	my ($src, $dst) = @_;
303
304	@{$dst->registry} = @{$src->registry};
305	warn "registry clone ", join ":", @{$src->registry};#d#
306
307	%$dst = %$src;
308
309	$dst->{_attachment} = [@{ $src->{_attachment} }]
310	if exists $src->{_attachment};
311
312	warn "clone<@_>\n";#d#
313	},	631	},
314	;	632	);
315
316	#############################################################################
317	# old plug-in events
318
319	sub inject_event {
320	my $extension = shift;
321	my $event_code = shift;
322
323	my $cb = $hook[$event_code]{$extension}
324	or return;
325
326	&$cb
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
348	sub register_command {
349	my ($name, $time, $cb) = @_;
350
351	my $caller = caller;
352	#warn "registering command '$name/$time' to '$caller'";
353
354	push @{ $command{$name} }, [$time, $cb, $caller];
355	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
356	}
357
358	sub register_extcmd {
359	my ($name, $cb) = @_;
360
361	my $caller = caller;
362	#warn "registering extcmd '$name' to '$caller'";
363
364	$extcmd{$name} = [$cb, $caller];
365	}
366		633
367	sub register {	634	sub register {
368	my ($base, $pkg) = @_;	635	my ($base, $pkg) = @_;
369		636
370	#TODO	637	#TODO
…		…
389	. "#line 1 \"$path\"\n{\n"	656	. "#line 1 \"$path\"\n{\n"
390	. (do { local $/; <$fh> })	657	. (do { local $/; <$fh> })
391	. "\n};\n1";	658	. "\n};\n1";
392		659
393	eval $source	660	eval $source
394	or die "$path: $@";	661	or die $@ ? "$path: $@\n"
		662	: "extension disabled.\n";
395		663
396	push @exts, $pkg;	664	push @exts, $pkg;
397	$ext_pkg{$base} = $pkg;	665	$ext_pkg{$base} = $pkg;
398		666
399	# no strict 'refs';	667	# no strict 'refs';
…		…
412	# for my $idx (0 .. $#PLUGIN_EVENT) {	680	# for my $idx (0 .. $#PLUGIN_EVENT) {
413	# delete $hook[$idx]{$pkg};	681	# delete $hook[$idx]{$pkg};
414	# }	682	# }
415		683
416	# remove commands	684	# remove commands
417	for my $name (keys %command) {	685	for my $name (keys %COMMAND) {
418	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	686	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
419		687
420	if (@cb) {	688	if (@cb) {
421	$command{$name} = \@cb;	689	$COMMAND{$name} = \@cb;
422	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
423	} else {	690	} else {
424	delete $command{$name};
425	delete $COMMAND{"$name\000"};	691	delete $COMMAND{$name};
426	}	692	}
427	}	693	}
428		694
429	# remove extcmds	695	# remove extcmds
430	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	696	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
431	delete $extcmd{$name};	697	delete $EXTCMD{$name};
432	}	698	}
433		699
434	if (my $cb = $pkg->can ("unload")) {	700	if (my $cb = $pkg->can ("unload")) {
435	eval {	701	eval {
436	$cb->($pkg);	702	$cb->($pkg);
…		…
440		706
441	Symbol::delete_package $pkg;	707	Symbol::delete_package $pkg;
442	}	708	}
443		709
444	sub load_extensions {	710	sub load_extensions {
445	my $LIBDIR = maps_directory "perl";
446
447	for my $ext (<$LIBDIR/*.ext>) {	711	for my $ext (<$LIBDIR/*.ext>) {
448	next unless -r $ext;	712	next unless -r $ext;
449	eval {	713	eval {
450	load_extension $ext;	714	load_extension $ext;
451	1	715	1
452	} or warn "$ext not loaded: $@";	716	} or warn "$ext not loaded: $@";
453	}	717	}
454	}	718	}
455		719
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	#############################################################################	720	#############################################################################
554	# load/save/clean perl data associated with a map	721	# load/save/clean perl data associated with a map
555		722
556	*cf::mapsupport::on_clean = sub {	723	*cf::mapsupport::on_clean = sub {
557	my ($map) = @_;	724	my ($map) = @_;
558		725
559	my $path = $map->tmpname;	726	my $path = $map->tmpname;
560	defined $path or return;	727	defined $path or return;
561		728
562	unlink "$path.cfperl";	729	unlink "$path.pst";
563	};	730	};
564		731
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::;	732	cf::map->attach (prio => -10000, package => cf::mapsupport::);
611		733
612	#############################################################################	734	#############################################################################
613	# load/save perl data associated with player->ob objects	735	# load/save perl data associated with player->ob objects
614		736
615	sub all_objects(@) {	737	sub all_objects(@) {
616	@_, map all_objects ($_->inv), @_	738	@_, map all_objects ($_->inv), @_
617	}	739	}
618		740
619	attach_to_players	741	# TODO: compatibility cruft, remove when no longer needed
		742	cf::player->attach (
620	on_load => sub {	743	on_load => sub {
621	my ($pl, $path) = @_;	744	my ($pl, $path) = @_;
622		745
623	for my $o (all_objects $pl->ob) {	746	for my $o (all_objects $pl->ob) {
624	if (my $value = $o->get_ob_key_value ("_perl_data")) {	747	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
626		749
627	%$o = %{ Storable::thaw pack "H*", $value };	750	%$o = %{ Storable::thaw pack "H*", $value };
628	}	751	}
629	}	752	}
630	},	753	},
631	on_save => sub {	754	);
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		755
639	#############################################################################	756	#############################################################################
640	# core extensions - in perl	757
		758	=head2 CORE EXTENSIONS
		759
		760	Functions and methods that extend core crossfire objects.
		761
		762	=head3 cf::player
		763
		764	=over 4
641		765
642	=item cf::player::exists $login	766	=item cf::player::exists $login
643		767
644	Returns true when the given account exists.	768	Returns true when the given account exists.
645		769
…		…
648	sub cf::player::exists($) {	772	sub cf::player::exists($) {
649	cf::player::find $_[0]	773	cf::player::find $_[0]
650	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	774	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
651	}	775	}
652		776
		777	=item $player->ext_reply ($msgid, $msgtype, %msg)
		778
		779	Sends an ext reply to the player.
		780
		781	=cut
		782
		783	sub cf::player::ext_reply($$$%) {
		784	my ($self, $id, %msg) = @_;
		785
		786	$msg{msgid} = $id;
		787
		788	$self->send ("ext " . to_json \%msg);
		789	}
		790
		791	=back
		792
		793	=head3 cf::object::player
		794
		795	=over 4
		796
653	=item $player->reply ($npc, $msg[, $flags])	797	=item $player_object->reply ($npc, $msg[, $flags])
654		798
655	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	799	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
656	can be C<undef>. Does the right thing when the player is currently in a	800	can be C<undef>. Does the right thing when the player is currently in a
657	dialogue with the given NPC character.	801	dialogue with the given NPC character.
658		802
659	=cut	803	=cut
660		804
661	# rough implementation of a future "reply" method that works	805	# rough implementation of a future "reply" method that works
662	# with dialog boxes.	806	# with dialog boxes.
		807	#TODO: the first argument must go, split into a $npc->reply_to ( method
663	sub cf::object::player::reply($$$;$) {	808	sub cf::object::player::reply($$$;$) {
664	my ($self, $npc, $msg, $flags) = @_;	809	my ($self, $npc, $msg, $flags) = @_;
665		810
666	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	811	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
667		812
…		…
671	$msg = $npc->name . " says: $msg" if $npc;	816	$msg = $npc->name . " says: $msg" if $npc;
672	$self->message ($msg, $flags);	817	$self->message ($msg, $flags);
673	}	818	}
674	}	819	}
675		820
676	=item $player->ext_reply ($msgid, $msgtype, %msg)	821	=item $player_object->may ("access")
677		822
678	Sends an ext reply to the player.	823	Returns wether the given player is authorized to access resource "access"
		824	(e.g. "command_wizcast").
679		825
680	=cut	826	=cut
681		827
682	sub cf::player::ext_reply($$$%) {	828	sub cf::object::player::may {
		829	my ($self, $access) = @_;
		830
		831	$self->flag (cf::FLAG_WIZ) ||
		832	(ref $cf::CFG{"may_$access"}
		833	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		834	: $cf::CFG{"may_$access"})
		835	}
		836
		837	=head3 cf::client
		838
		839	=over 4
		840
		841	=item $client->send_drawinfo ($text, $flags)
		842
		843	Sends a drawinfo packet to the client. Circumvents output buffering so
		844	should not be used under normal circumstances.
		845
		846	=cut
		847
		848	sub cf::client::send_drawinfo {
		849	my ($self, $text, $flags) = @_;
		850
		851	utf8::encode $text;
		852	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		853	}
		854
		855
		856	=item $success = $client->query ($flags, "text", \&cb)
		857
		858	Queues a query to the client, calling the given callback with
		859	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		860	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		861
		862	Queries can fail, so check the return code. Or don't, as queries will become
		863	reliable at some point in the future.
		864
		865	=cut
		866
		867	sub cf::client::query {
		868	my ($self, $flags, $text, $cb) = @_;
		869
		870	return unless $self->state == ST_PLAYING
		871	|| $self->state == ST_SETUP
		872	|| $self->state == ST_CUSTOM;
		873
		874	$self->state (ST_CUSTOM);
		875
		876	utf8::encode $text;
		877	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		878
		879	$self->send_packet ($self->{query_queue}[0][0])
		880	if @{ $self->{query_queue} } == 1;
		881	}
		882
		883	cf::client->attach (
		884	on_reply => sub {
		885	my ($ns, $msg) = @_;
		886
		887	# this weird shuffling is so that direct followup queries
		888	# get handled first
		889	my $queue = delete $ns->{query_queue};
		890
		891	(shift @$queue)->[1]->($msg);
		892
		893	push @{ $ns->{query_queue} }, @$queue;
		894
		895	if (@{ $ns->{query_queue} } == @$queue) {
		896	if (@$queue) {
		897	$ns->send_packet ($ns->{query_queue}[0][0]);
		898	} else {
		899	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		900	}
		901	}
		902	},
		903	);
		904
		905	=item $client->coro (\&cb)
		906
		907	Create a new coroutine, running the specified callback. The coroutine will
		908	be automatically cancelled when the client gets destroyed (e.g. on logout,
		909	or loss of connection).
		910
		911	=cut
		912
		913	sub cf::client::coro {
683	my ($self, $id, %msg) = @_;	914	my ($self, $cb) = @_;
684		915
685	$msg{msgid} = $id;	916	my $coro; $coro = async {
		917	eval {
		918	$cb->();
		919	};
		920	warn $@ if $@;
		921	delete $self->{_coro}{$coro+0};
		922	};
686		923
687	$self->send ("ext " . to_json \%msg);	924	$self->{_coro}{$coro+0} = $coro;
688	}	925	}
689		926
690	#############################################################################	927	cf::client->attach (
691	# map scripting support	928	on_destroy => sub {
		929	my ($ns) = @_;
		930
		931	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		932	},
		933	);
		934
		935	=back
		936
		937
		938	=head2 SAFE SCRIPTING
		939
		940	Functions that provide a safe environment to compile and execute
		941	snippets of perl code without them endangering the safety of the server
		942	itself. Looping constructs, I/O operators and other built-in functionality
		943	is not available in the safe scripting environment, and the number of
		944	functions and methods that can be called is greatly reduced.
		945
		946	=cut
692		947
693	our $safe = new Safe "safe";	948	our $safe = new Safe "safe";
694	our $safe_hole = new Safe::Hole;	949	our $safe_hole = new Safe::Hole;
695		950
696	$SIG{FPE} = 'IGNORE';	951	$SIG{FPE} = 'IGNORE';
697		952
698	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	953	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
699		954
700	# here we export the classes and methods available to script code	955	# here we export the classes and methods available to script code
701		956
		957	=pod
		958
		959	The following fucntions and emthods are available within a safe environment:
		960
		961	cf::object contr pay_amount pay_player map
		962	cf::object::player player
		963	cf::player peaceful
		964	cf::map trigger
		965
		966	=cut
		967
702	for (	968	for (
703	["cf::object" => qw(contr pay_amount pay_player)],	969	["cf::object" => qw(contr pay_amount pay_player map)],
704	["cf::object::player" => qw(player)],	970	["cf::object::player" => qw(player)],
705	["cf::player" => qw(peaceful)],	971	["cf::player" => qw(peaceful)],
		972	["cf::map" => qw(trigger)],
706	) {	973	) {
707	no strict 'refs';	974	no strict 'refs';
708	my ($pkg, @funs) = @$_;	975	my ($pkg, @funs) = @$_;
709	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	976	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
710	for @funs;	977	for @funs;
711	}	978	}
		979
		980	=over 4
		981
		982	=item @retval = safe_eval $code, [var => value, ...]
		983
		984	Compiled and executes the given perl code snippet. additional var/value
		985	pairs result in temporary local (my) scalar variables of the given name
		986	that are available in the code snippet. Example:
		987
		988	my $five = safe_eval '$first + $second', first => 1, second => 4;
		989
		990	=cut
712		991
713	sub safe_eval($;@) {	992	sub safe_eval($;@) {
714	my ($code, %vars) = @_;	993	my ($code, %vars) = @_;
715		994
716	my $qcode = $code;	995	my $qcode = $code;
…		…
739	}	1018	}
740		1019
741	wantarray ? @res : $res[0]	1020	wantarray ? @res : $res[0]
742	}	1021	}
743		1022
		1023	=item cf::register_script_function $function => $cb
		1024
		1025	Register a function that can be called from within map/npc scripts. The
		1026	function should be reasonably secure and should be put into a package name
		1027	like the extension.
		1028
		1029	Example: register a function that gets called whenever a map script calls
		1030	C<rent::overview>, as used by the C<rent> extension.
		1031
		1032	cf::register_script_function "rent::overview" => sub {
		1033	...
		1034	};
		1035
		1036	=cut
		1037
744	sub register_script_function {	1038	sub register_script_function {
745	my ($fun, $cb) = @_;	1039	my ($fun, $cb) = @_;
746		1040
747	no strict 'refs';	1041	no strict 'refs';
748	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1042	*{"safe::$fun"} = $safe_hole->wrap ($cb);
749	}	1043	}
750		1044
		1045	=back
		1046
		1047	=cut
		1048
		1049	#############################################################################
		1050
		1051	=head2 EXTENSION DATABASE SUPPORT
		1052
		1053	Crossfire maintains a very simple database for extension use. It can
		1054	currently store anything that can be serialised using Storable, which
		1055	excludes objects.
		1056
		1057	The parameter C<$family> should best start with the name of the extension
		1058	using it, it should be unique.
		1059
		1060	=over 4
		1061
		1062	=item $hashref = cf::db_get $family
		1063
		1064	Return a hashref for use by the extension C<$family>, which can be
		1065	modified. After modifications, you have to call C<cf::db_dirty> or
		1066	C<cf::db_sync>.
		1067
		1068	=item $value = cf::db_get $family => $key
		1069
		1070	Returns a single value from the database
		1071
		1072	=item cf::db_put $family => $hashref
		1073
		1074	Stores the given family hashref into the database. Updates are delayed, if
		1075	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1076
		1077	=item cf::db_put $family => $key => $value
		1078
		1079	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1080	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1081
		1082	=item cf::db_dirty
		1083
		1084	Marks the database as dirty, to be updated at a later time.
		1085
		1086	=item cf::db_sync
		1087
		1088	Immediately write the database to disk I<if it is dirty>.
		1089
		1090	=cut
		1091
		1092	our $DB;
		1093
		1094	{
		1095	my $path = cf::localdir . "/database.pst";
		1096
		1097	sub db_load() {
		1098	warn "loading database $path\n";#d# remove later
		1099	$DB = stat $path ? Storable::retrieve $path : { };
		1100	}
		1101
		1102	my $pid;
		1103
		1104	sub db_save() {
		1105	warn "saving database $path\n";#d# remove later
		1106	waitpid $pid, 0 if $pid;
		1107	if (0 == ($pid = fork)) {
		1108	$DB->{_meta}{version} = 1;
		1109	Storable::nstore $DB, "$path~";
		1110	rename "$path~", $path;
		1111	cf::_exit 0 if defined $pid;
		1112	}
		1113	}
		1114
		1115	my $dirty;
		1116
		1117	sub db_sync() {
		1118	db_save if $dirty;
		1119	undef $dirty;
		1120	}
		1121
		1122	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1123	db_sync;
		1124	});
		1125
		1126	sub db_dirty() {
		1127	$dirty = 1;
		1128	$idle->start;
		1129	}
		1130
		1131	sub db_get($;$) {
		1132	@_ >= 2
		1133	? $DB->{$_[0]}{$_[1]}
		1134	: ($DB->{$_[0]} ||= { })
		1135	}
		1136
		1137	sub db_put($$;$) {
		1138	if (@_ >= 3) {
		1139	$DB->{$_[0]}{$_[1]} = $_[2];
		1140	} else {
		1141	$DB->{$_[0]} = $_[1];
		1142	}
		1143	db_dirty;
		1144	}
		1145
		1146	cf::global->attach (
		1147	prio => 10000,
		1148	on_cleanup => sub {
		1149	db_sync;
		1150	},
		1151	);
		1152	}
		1153
751	#############################################################################	1154	#############################################################################
752	# the server's main()	1155	# the server's main()
753		1156
		1157	sub cfg_load {
		1158	open my $fh, "<:utf8", cf::confdir . "/config"
		1159	or return;
		1160
		1161	local $/;
		1162	*CFG = YAML::Syck::Load <$fh>;
		1163	}
		1164
754	sub main {	1165	sub main {
		1166	cfg_load;
		1167	db_load;
		1168	load_extensions;
755	Event::loop;	1169	Event::loop;
756	}	1170	}
757		1171
758	#############################################################################	1172	#############################################################################
759	# initialisation	1173	# initialisation
760		1174
		1175	sub _perl_reload(&) {
		1176	my ($msg) = @_;
		1177
		1178	$msg->("reloading...");
		1179
		1180	eval {
		1181	# cancel all watchers
		1182	for (Event::all_watchers) {
		1183	$_->cancel if $_->data & WF_AUTOCANCEL;
		1184	}
		1185
		1186	# unload all extensions
		1187	for (@exts) {
		1188	$msg->("unloading <$_>");
		1189	unload_extension $_;
		1190	}
		1191
		1192	# unload all modules loaded from $LIBDIR
		1193	while (my ($k, $v) = each %INC) {
		1194	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1195
		1196	$msg->("removing <$k>");
		1197	delete $INC{$k};
		1198
		1199	$k =~ s/\.pm$//;
		1200	$k =~ s/\//::/g;
		1201
		1202	if (my $cb = $k->can ("unload_module")) {
		1203	$cb->();
		1204	}
		1205
		1206	Symbol::delete_package $k;
		1207	}
		1208
		1209	# sync database to disk
		1210	cf::db_sync;
		1211
		1212	# get rid of safe::, as good as possible
		1213	Symbol::delete_package "safe::$_"
		1214	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1215
		1216	# remove register_script_function callbacks
		1217	# TODO
		1218
		1219	# unload cf.pm "a bit"
		1220	delete $INC{"cf.pm"};
		1221
		1222	# don't, removes xs symbols, too,
		1223	# and global variables created in xs
		1224	#Symbol::delete_package __PACKAGE__;
		1225
		1226	# reload cf.pm
		1227	$msg->("reloading cf.pm");
		1228	require cf;
		1229	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1230
		1231	# load config and database again
		1232	cf::cfg_load;
		1233	cf::db_load;
		1234
		1235	# load extensions
		1236	$msg->("load extensions");
		1237	cf::load_extensions;
		1238
		1239	# reattach attachments to objects
		1240	$msg->("reattach");
		1241	_global_reattach;
		1242	};
		1243	$msg->($@) if $@;
		1244
		1245	$msg->("reloaded");
		1246	};
		1247
		1248	sub perl_reload() {
		1249	_perl_reload {
		1250	warn $_[0];
		1251	print "$_[0]\n";
		1252	};
		1253	}
		1254
761	register "<global>", __PACKAGE__;	1255	register "<global>", __PACKAGE__;
762		1256
		1257	register_command "perl-reload" => sub {
		1258	my ($who, $arg) = @_;
		1259
		1260	if ($who->flag (FLAG_WIZ)) {
		1261	_perl_reload {
		1262	warn $_[0];
		1263	$who->message ($_[0]);
		1264	};
		1265	}
		1266	};
		1267
763	unshift @INC, $LIBDIR;	1268	unshift @INC, $LIBDIR;
764		1269
765	load_extensions;
766
767	$TICK_WATCHER = Event->timer (	1270	$TICK_WATCHER = Event->timer (
768	prio => 1,	1271	prio => 0,
769	at => $NEXT_TICK || 1,	1272	at => $NEXT_TICK || 1,
		1273	data => WF_AUTOCANCEL,
770	cb => sub {	1274	cb => sub {
771	cf::server_tick; # one server iteration	1275	cf::server_tick; # one server iteration
772		1276
773	my $NOW = Event::time;	1277	my $NOW = Event::time;
774	$NEXT_TICK += $TICK;	1278	$NEXT_TICK += $TICK;
775		1279
776	# if we are delayed by four ticks, skip them all	1280	# if we are delayed by four ticks or more, skip them all
777	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1281	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
778		1282
779	$TICK_WATCHER->at ($NEXT_TICK);	1283	$TICK_WATCHER->at ($NEXT_TICK);
780	$TICK_WATCHER->start;	1284	$TICK_WATCHER->start;
781	},	1285	},
782	);	1286	);
783		1287
		1288	IO::AIO::max_poll_time $TICK * 0.2;
		1289
		1290	Event->io (fd => IO::AIO::poll_fileno,
		1291	poll => 'r',
		1292	prio => 5,
		1293	data => WF_AUTOCANCEL,
		1294	cb => \&IO::AIO::poll_cb);
		1295
784	1	1296	1
785		1297

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