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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 1.100 by root, Mon Dec 25 11:25:49 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	cf::attachable->attach (
		460	prio => -1000000,
		461	on_instantiate => sub {
263	my ($obj, $data) = @_;	462	my ($obj, $data) = @_;
		463
		464	$data = from_json $data;
		465
		466	for (@$data) {
		467	my ($name, $args) = @$_;
		468
		469	$obj->attach ($name, %{$args || {} });
		470	}
		471	},
		472	on_reattach => sub {
		473	# basically do the same as instantiate, without calling instantiate
		474	my ($obj) = @_;
264	my $registry = $obj->registry;	475	my $registry = $obj->registry;
265		476
266	$data = from_json $data;	477	@$registry = ();
267		478
268	for (@$data) {	479	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
269	my ($pri, $name, @args) = @$_;
270		480
		481	for my $name (keys %{ $obj->{_attachment} || {} }) {
271	if (my $attach = $attachment{$name}) {	482	if (my $attach = $attachment{$name}) {
272	_attach @$registry, KLASS_OBJECT, @$attach;
273
274	if (my $cb = delete $registry->[EVENT_OBJECT_INSTANTIATE]) {
275	for (@$cb) {	483	for (@$attach) {
276	eval { $_->[1]->($obj, @args); };	484	my ($klass, @attach) = @$_;
277	if ($@) {	485	_attach $registry, $klass, @attach;
278	warn "$@";
279	warn "... while processing '$name' instantiate with args <@args>\n";
280	}	486	}
		487	} else {
		488	warn "object uses attachment '$name' that is not available, postponing.\n";
		489	}
		490	}
		491	},
		492	on_clone => sub {
		493	my ($src, $dst) = @_;
		494
		495	@{$dst->registry} = @{$src->registry};
		496
		497	%$dst = %$src;
		498
		499	%{$dst->{_attachment}} = %{$src->{_attachment}}
		500	if exists $src->{_attachment};
		501	},
		502	);
		503
		504	sub object_freezer_save {
		505	my ($filename, $rdata, $objs) = @_;
		506
		507	if (length $$rdata) {
		508	warn sprintf "saving %s (%d,%d)\n",
		509	$filename, length $$rdata, scalar @$objs;
		510
		511	if (open my $fh, ">:raw", "$filename~") {
		512	chmod SAVE_MODE, $fh;
		513	syswrite $fh, $$rdata;
		514	close $fh;
		515
		516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
		517	chmod SAVE_MODE, $fh;
		518	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
		519	close $fh;
		520	rename "$filename.pst~", "$filename.pst";
		521	} else {
		522	unlink "$filename.pst";
		523	}
		524
		525	rename "$filename~", $filename;
		526	} else {
		527	warn "FATAL: $filename~: $!\n";
		528	}
		529	} else {
		530	unlink $filename;
		531	unlink "$filename.pst";
		532	}
		533	}
		534
		535	sub object_freezer_as_string {
		536	my ($rdata, $objs) = @_;
		537
		538	use Data::Dumper;
		539
		540	$$rdata . Dumper $objs
		541	}
		542
		543	sub object_thawer_load {
		544	my ($filename) = @_;
		545
		546	local $/;
		547
		548	my $av;
		549
		550	#TODO: use sysread etc.
		551	if (open my $data, "<:raw:perlio", $filename) {
		552	$data = <$data>;
		553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
		554	$av = eval { (Storable::thaw <$pst>)->{objs} };
		555	}
		556	return ($data, $av);
		557	}
		558
		559	()
		560	}
		561
		562	#############################################################################
		563	# command handling &c
		564
		565	=item cf::register_command $name => \&callback($ob,$args);
		566
		567	Register a callback for execution when the client sends the user command
		568	$name.
		569
		570	=cut
		571
		572	sub register_command {
		573	my ($name, $cb) = @_;
		574
		575	my $caller = caller;
		576	#warn "registering command '$name/$time' to '$caller'";
		577
		578	push @{ $COMMAND{$name} }, [$caller, $cb];
		579	}
		580
		581	=item cf::register_extcmd $name => \&callback($pl,$packet);
		582
		583	Register a callbackf ro execution when the client sends an extcmd packet.
		584
		585	If the callback returns something, it is sent back as if reply was being
		586	called.
		587
		588	=cut
		589
		590	sub register_extcmd {
		591	my ($name, $cb) = @_;
		592
		593	my $caller = caller;
		594	#warn "registering extcmd '$name' to '$caller'";
		595
		596	$EXTCMD{$name} = [$cb, $caller];
		597	}
		598
		599	cf::player->attach (
		600	on_command => sub {
		601	my ($pl, $name, $params) = @_;
		602
		603	my $cb = $COMMAND{$name}
		604	or return;
		605
		606	for my $cmd (@$cb) {
		607	$cmd->[1]->($pl->ob, $params);
		608	}
		609
		610	cf::override;
		611	},
		612	on_extcmd => sub {
		613	my ($pl, $buf) = @_;
		614
		615	my $msg = eval { from_json $buf };
		616
		617	if (ref $msg) {
		618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		619	if (my %reply = $cb->[0]->($pl, $msg)) {
		620	$pl->ext_reply ($msg->{msgid}, %reply);
281	}	621	}
282	}	622	}
283	} else {	623	} else {
284	warn "object uses attachment $name that is not available, postponing.\n";	624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
285	}	625	}
286		626
287	push @{$obj->{_attachment}}, $name;	627	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	},	628	},
314	;	629	);
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		630
367	sub register {	631	sub register {
368	my ($base, $pkg) = @_;	632	my ($base, $pkg) = @_;
369		633
370	#TODO	634	#TODO
…		…
389	. "#line 1 \"$path\"\n{\n"	653	. "#line 1 \"$path\"\n{\n"
390	. (do { local $/; <$fh> })	654	. (do { local $/; <$fh> })
391	. "\n};\n1";	655	. "\n};\n1";
392		656
393	eval $source	657	eval $source
394	or die "$path: $@";	658	or die $@ ? "$path: $@\n"
		659	: "extension disabled.\n";
395		660
396	push @exts, $pkg;	661	push @exts, $pkg;
397	$ext_pkg{$base} = $pkg;	662	$ext_pkg{$base} = $pkg;
398		663
399	# no strict 'refs';	664	# no strict 'refs';
…		…
412	# for my $idx (0 .. $#PLUGIN_EVENT) {	677	# for my $idx (0 .. $#PLUGIN_EVENT) {
413	# delete $hook[$idx]{$pkg};	678	# delete $hook[$idx]{$pkg};
414	# }	679	# }
415		680
416	# remove commands	681	# remove commands
417	for my $name (keys %command) {	682	for my $name (keys %COMMAND) {
418	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	683	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
419		684
420	if (@cb) {	685	if (@cb) {
421	$command{$name} = \@cb;	686	$COMMAND{$name} = \@cb;
422	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
423	} else {	687	} else {
424	delete $command{$name};
425	delete $COMMAND{"$name\000"};	688	delete $COMMAND{$name};
426	}	689	}
427	}	690	}
428		691
429	# remove extcmds	692	# remove extcmds
430	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	693	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
431	delete $extcmd{$name};	694	delete $EXTCMD{$name};
432	}	695	}
433		696
434	if (my $cb = $pkg->can ("unload")) {	697	if (my $cb = $pkg->can ("unload")) {
435	eval {	698	eval {
436	$cb->($pkg);	699	$cb->($pkg);
…		…
440		703
441	Symbol::delete_package $pkg;	704	Symbol::delete_package $pkg;
442	}	705	}
443		706
444	sub load_extensions {	707	sub load_extensions {
445	my $LIBDIR = maps_directory "perl";
446
447	for my $ext (<$LIBDIR/*.ext>) {	708	for my $ext (<$LIBDIR/*.ext>) {
448	next unless -r $ext;	709	next unless -r $ext;
449	eval {	710	eval {
450	load_extension $ext;	711	load_extension $ext;
451	1	712	1
452	} or warn "$ext not loaded: $@";	713	} or warn "$ext not loaded: $@";
453	}	714	}
454	}	715	}
455		716
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	#############################################################################	717	#############################################################################
554	# load/save/clean perl data associated with a map	718	# load/save/clean perl data associated with a map
555		719
556	*cf::mapsupport::on_clean = sub {	720	*cf::mapsupport::on_clean = sub {
557	my ($map) = @_;	721	my ($map) = @_;
558		722
559	my $path = $map->tmpname;	723	my $path = $map->tmpname;
560	defined $path or return;	724	defined $path or return;
561		725
562	unlink "$path.cfperl";	726	unlink "$path.pst";
563	};	727	};
564		728
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::;	729	cf::map->attach (prio => -10000, package => cf::mapsupport::);
611		730
612	#############################################################################	731	#############################################################################
613	# load/save perl data associated with player->ob objects	732	# load/save perl data associated with player->ob objects
614		733
615	sub all_objects(@) {	734	sub all_objects(@) {
616	@_, map all_objects ($_->inv), @_	735	@_, map all_objects ($_->inv), @_
617	}	736	}
618		737
619	attach_to_players	738	# TODO: compatibility cruft, remove when no longer needed
		739	cf::player->attach (
620	on_load => sub {	740	on_load => sub {
621	my ($pl, $path) = @_;	741	my ($pl, $path) = @_;
622		742
623	for my $o (all_objects $pl->ob) {	743	for my $o (all_objects $pl->ob) {
624	if (my $value = $o->get_ob_key_value ("_perl_data")) {	744	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
626		746
627	%$o = %{ Storable::thaw pack "H*", $value };	747	%$o = %{ Storable::thaw pack "H*", $value };
628	}	748	}
629	}	749	}
630	},	750	},
631	on_save => sub {	751	);
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		752
639	#############################################################################	753	#############################################################################
640	# core extensions - in perl	754
		755	=head2 CORE EXTENSIONS
		756
		757	Functions and methods that extend core crossfire objects.
		758
		759	=head3 cf::player
		760
		761	=over 4
641		762
642	=item cf::player::exists $login	763	=item cf::player::exists $login
643		764
644	Returns true when the given account exists.	765	Returns true when the given account exists.
645		766
…		…
648	sub cf::player::exists($) {	769	sub cf::player::exists($) {
649	cf::player::find $_[0]	770	cf::player::find $_[0]
650	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
651	}	772	}
652		773
		774	=item $player->ext_reply ($msgid, $msgtype, %msg)
		775
		776	Sends an ext reply to the player.
		777
		778	=cut
		779
		780	sub cf::player::ext_reply($$$%) {
		781	my ($self, $id, %msg) = @_;
		782
		783	$msg{msgid} = $id;
		784
		785	$self->send ("ext " . to_json \%msg);
		786	}
		787
		788	=back
		789
		790	=head3 cf::object::player
		791
		792	=over 4
		793
653	=item $player->reply ($npc, $msg[, $flags])	794	=item $player_object->reply ($npc, $msg[, $flags])
654		795
655	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
656	can be C<undef>. Does the right thing when the player is currently in a	797	can be C<undef>. Does the right thing when the player is currently in a
657	dialogue with the given NPC character.	798	dialogue with the given NPC character.
658		799
659	=cut	800	=cut
660		801
661	# rough implementation of a future "reply" method that works	802	# rough implementation of a future "reply" method that works
662	# with dialog boxes.	803	# with dialog boxes.
		804	#TODO: the first argument must go, split into a $npc->reply_to ( method
663	sub cf::object::player::reply($$$;$) {	805	sub cf::object::player::reply($$$;$) {
664	my ($self, $npc, $msg, $flags) = @_;	806	my ($self, $npc, $msg, $flags) = @_;
665		807
666	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	808	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
667		809
…		…
671	$msg = $npc->name . " says: $msg" if $npc;	813	$msg = $npc->name . " says: $msg" if $npc;
672	$self->message ($msg, $flags);	814	$self->message ($msg, $flags);
673	}	815	}
674	}	816	}
675		817
676	=item $player->ext_reply ($msgid, $msgtype, %msg)	818	=item $player_object->may ("access")
677		819
678	Sends an ext reply to the player.	820	Returns wether the given player is authorized to access resource "access"
		821	(e.g. "command_wizcast").
679		822
680	=cut	823	=cut
681		824
682	sub cf::player::ext_reply($$$%) {	825	sub cf::object::player::may {
		826	my ($self, $access) = @_;
		827
		828	$self->flag (cf::FLAG_WIZ) ||
		829	(ref $cf::CFG{"may_$access"}
		830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		831	: $cf::CFG{"may_$access"})
		832	}
		833
		834	=head3 cf::client
		835
		836	=over 4
		837
		838	=item $client->send_drawinfo ($text, $flags)
		839
		840	Sends a drawinfo packet to the client. Circumvents output buffering so
		841	should not be used under normal circumstances.
		842
		843	=cut
		844
		845	sub cf::client::send_drawinfo {
		846	my ($self, $text, $flags) = @_;
		847
		848	utf8::encode $text;
		849	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		850	}
		851
		852
		853	=item $success = $client->query ($flags, "text", \&cb)
		854
		855	Queues a query to the client, calling the given callback with
		856	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		857	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		858
		859	Queries can fail, so check the return code. Or don't, as queries will become
		860	reliable at some point in the future.
		861
		862	=cut
		863
		864	sub cf::client::query {
		865	my ($self, $flags, $text, $cb) = @_;
		866
		867	return unless $self->state == ST_PLAYING
		868	|| $self->state == ST_SETUP
		869	|| $self->state == ST_CUSTOM;
		870
		871	$self->state (ST_CUSTOM);
		872
		873	utf8::encode $text;
		874	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		875
		876	$self->send_packet ($self->{query_queue}[0][0])
		877	if @{ $self->{query_queue} } == 1;
		878	}
		879
		880	cf::client->attach (
		881	on_reply => sub {
		882	my ($ns, $msg) = @_;
		883
		884	# this weird shuffling is so that direct followup queries
		885	# get handled first
		886	my $queue = delete $ns->{query_queue};
		887
		888	(shift @$queue)->[1]->($msg);
		889
		890	push @{ $ns->{query_queue} }, @$queue;
		891
		892	if (@{ $ns->{query_queue} } == @$queue) {
		893	if (@$queue) {
		894	$ns->send_packet ($ns->{query_queue}[0][0]);
		895	} else {
		896	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		897	}
		898	}
		899	},
		900	);
		901
		902	=item $client->coro (\&cb)
		903
		904	Create a new coroutine, running the specified callback. The coroutine will
		905	be automatically cancelled when the client gets destroyed (e.g. on logout,
		906	or loss of connection).
		907
		908	=cut
		909
		910	sub cf::client::coro {
683	my ($self, $id, %msg) = @_;	911	my ($self, $cb) = @_;
684		912
685	$msg{msgid} = $id;	913	my $coro; $coro = async {
		914	eval {
		915	$cb->();
		916	};
		917	warn $@ if $@;
		918	delete $self->{_coro}{$coro+0};
		919	};
686		920
687	$self->send ("ext " . to_json \%msg);	921	$self->{_coro}{$coro+0} = $coro;
688	}	922	}
689		923
690	#############################################################################	924	cf::client->attach (
691	# map scripting support	925	on_destroy => sub {
		926	my ($ns) = @_;
		927
		928	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		929	},
		930	);
		931
		932	=back
		933
		934
		935	=head2 SAFE SCRIPTING
		936
		937	Functions that provide a safe environment to compile and execute
		938	snippets of perl code without them endangering the safety of the server
		939	itself. Looping constructs, I/O operators and other built-in functionality
		940	is not available in the safe scripting environment, and the number of
		941	functions and methods that can be called is greatly reduced.
		942
		943	=cut
692		944
693	our $safe = new Safe "safe";	945	our $safe = new Safe "safe";
694	our $safe_hole = new Safe::Hole;	946	our $safe_hole = new Safe::Hole;
695		947
696	$SIG{FPE} = 'IGNORE';	948	$SIG{FPE} = 'IGNORE';
697		949
698	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	950	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
699		951
700	# here we export the classes and methods available to script code	952	# here we export the classes and methods available to script code
701		953
		954	=pod
		955
		956	The following fucntions and emthods are available within a safe environment:
		957
		958	cf::object contr pay_amount pay_player map
		959	cf::object::player player
		960	cf::player peaceful
		961	cf::map trigger
		962
		963	=cut
		964
702	for (	965	for (
703	["cf::object" => qw(contr pay_amount pay_player)],	966	["cf::object" => qw(contr pay_amount pay_player map)],
704	["cf::object::player" => qw(player)],	967	["cf::object::player" => qw(player)],
705	["cf::player" => qw(peaceful)],	968	["cf::player" => qw(peaceful)],
		969	["cf::map" => qw(trigger)],
706	) {	970	) {
707	no strict 'refs';	971	no strict 'refs';
708	my ($pkg, @funs) = @$_;	972	my ($pkg, @funs) = @$_;
709	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	973	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
710	for @funs;	974	for @funs;
711	}	975	}
		976
		977	=over 4
		978
		979	=item @retval = safe_eval $code, [var => value, ...]
		980
		981	Compiled and executes the given perl code snippet. additional var/value
		982	pairs result in temporary local (my) scalar variables of the given name
		983	that are available in the code snippet. Example:
		984
		985	my $five = safe_eval '$first + $second', first => 1, second => 4;
		986
		987	=cut
712		988
713	sub safe_eval($;@) {	989	sub safe_eval($;@) {
714	my ($code, %vars) = @_;	990	my ($code, %vars) = @_;
715		991
716	my $qcode = $code;	992	my $qcode = $code;
…		…
739	}	1015	}
740		1016
741	wantarray ? @res : $res[0]	1017	wantarray ? @res : $res[0]
742	}	1018	}
743		1019
		1020	=item cf::register_script_function $function => $cb
		1021
		1022	Register a function that can be called from within map/npc scripts. The
		1023	function should be reasonably secure and should be put into a package name
		1024	like the extension.
		1025
		1026	Example: register a function that gets called whenever a map script calls
		1027	C<rent::overview>, as used by the C<rent> extension.
		1028
		1029	cf::register_script_function "rent::overview" => sub {
		1030	...
		1031	};
		1032
		1033	=cut
		1034
744	sub register_script_function {	1035	sub register_script_function {
745	my ($fun, $cb) = @_;	1036	my ($fun, $cb) = @_;
746		1037
747	no strict 'refs';	1038	no strict 'refs';
748	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1039	*{"safe::$fun"} = $safe_hole->wrap ($cb);
749	}	1040	}
750		1041
		1042	=back
		1043
		1044	=cut
		1045
		1046	#############################################################################
		1047
		1048	=head2 EXTENSION DATABASE SUPPORT
		1049
		1050	Crossfire maintains a very simple database for extension use. It can
		1051	currently store anything that can be serialised using Storable, which
		1052	excludes objects.
		1053
		1054	The parameter C<$family> should best start with the name of the extension
		1055	using it, it should be unique.
		1056
		1057	=over 4
		1058
		1059	=item $hashref = cf::db_get $family
		1060
		1061	Return a hashref for use by the extension C<$family>, which can be
		1062	modified. After modifications, you have to call C<cf::db_dirty> or
		1063	C<cf::db_sync>.
		1064
		1065	=item $value = cf::db_get $family => $key
		1066
		1067	Returns a single value from the database
		1068
		1069	=item cf::db_put $family => $hashref
		1070
		1071	Stores the given family hashref into the database. Updates are delayed, if
		1072	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		1073
		1074	=item cf::db_put $family => $key => $value
		1075
		1076	Stores the given C<$value> in the family hash. Updates are delayed, if you
		1077	want the data to be synced to disk immediately, use C<cf::db_sync>.
		1078
		1079	=item cf::db_dirty
		1080
		1081	Marks the database as dirty, to be updated at a later time.
		1082
		1083	=item cf::db_sync
		1084
		1085	Immediately write the database to disk I<if it is dirty>.
		1086
		1087	=cut
		1088
		1089	our $DB;
		1090
		1091	{
		1092	my $path = cf::localdir . "/database.pst";
		1093
		1094	sub db_load() {
		1095	warn "loading database $path\n";#d# remove later
		1096	$DB = stat $path ? Storable::retrieve $path : { };
		1097	}
		1098
		1099	my $pid;
		1100
		1101	sub db_save() {
		1102	warn "saving database $path\n";#d# remove later
		1103	waitpid $pid, 0 if $pid;
		1104	if (0 == ($pid = fork)) {
		1105	$DB->{_meta}{version} = 1;
		1106	Storable::nstore $DB, "$path~";
		1107	rename "$path~", $path;
		1108	cf::_exit 0 if defined $pid;
		1109	}
		1110	}
		1111
		1112	my $dirty;
		1113
		1114	sub db_sync() {
		1115	db_save if $dirty;
		1116	undef $dirty;
		1117	}
		1118
		1119	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		1120	db_sync;
		1121	});
		1122
		1123	sub db_dirty() {
		1124	$dirty = 1;
		1125	$idle->start;
		1126	}
		1127
		1128	sub db_get($;$) {
		1129	@_ >= 2
		1130	? $DB->{$_[0]}{$_[1]}
		1131	: ($DB->{$_[0]} ||= { })
		1132	}
		1133
		1134	sub db_put($$;$) {
		1135	if (@_ >= 3) {
		1136	$DB->{$_[0]}{$_[1]} = $_[2];
		1137	} else {
		1138	$DB->{$_[0]} = $_[1];
		1139	}
		1140	db_dirty;
		1141	}
		1142
		1143	cf::global->attach (
		1144	prio => 10000,
		1145	on_cleanup => sub {
		1146	db_sync;
		1147	},
		1148	);
		1149	}
		1150
751	#############################################################################	1151	#############################################################################
752	# the server's main()	1152	# the server's main()
753		1153
		1154	sub cfg_load {
		1155	open my $fh, "<:utf8", cf::confdir . "/config"
		1156	or return;
		1157
		1158	local $/;
		1159	*CFG = YAML::Syck::Load <$fh>;
		1160	}
		1161
754	sub main {	1162	sub main {
		1163	cfg_load;
		1164	db_load;
		1165	load_extensions;
755	Event::loop;	1166	Event::loop;
756	}	1167	}
757		1168
758	#############################################################################	1169	#############################################################################
759	# initialisation	1170	# initialisation
760		1171
		1172	sub _perl_reload(&) {
		1173	my ($msg) = @_;
		1174
		1175	$msg->("reloading...");
		1176
		1177	eval {
		1178	# cancel all watchers
		1179	for (Event::all_watchers) {
		1180	$_->cancel if $_->data & WF_AUTOCANCEL;
		1181	}
		1182
		1183	# unload all extensions
		1184	for (@exts) {
		1185	$msg->("unloading <$_>");
		1186	unload_extension $_;
		1187	}
		1188
		1189	# unload all modules loaded from $LIBDIR
		1190	while (my ($k, $v) = each %INC) {
		1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		1192
		1193	$msg->("removing <$k>");
		1194	delete $INC{$k};
		1195
		1196	$k =~ s/\.pm$//;
		1197	$k =~ s/\//::/g;
		1198
		1199	if (my $cb = $k->can ("unload_module")) {
		1200	$cb->();
		1201	}
		1202
		1203	Symbol::delete_package $k;
		1204	}
		1205
		1206	# sync database to disk
		1207	cf::db_sync;
		1208
		1209	# get rid of safe::, as good as possible
		1210	Symbol::delete_package "safe::$_"
		1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
		1212
		1213	# remove register_script_function callbacks
		1214	# TODO
		1215
		1216	# unload cf.pm "a bit"
		1217	delete $INC{"cf.pm"};
		1218
		1219	# don't, removes xs symbols, too,
		1220	# and global variables created in xs
		1221	#Symbol::delete_package __PACKAGE__;
		1222
		1223	# reload cf.pm
		1224	$msg->("reloading cf.pm");
		1225	require cf;
		1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		1227
		1228
		1229	# load config and database again
		1230	cf::cfg_load;
		1231	cf::db_load;
		1232
		1233	# load extensions
		1234	$msg->("load extensions");
		1235	cf::load_extensions;
		1236
		1237	# reattach attachments to objects
		1238	$msg->("reattach");
		1239	_global_reattach;
		1240	};
		1241	$msg->($@) if $@;
		1242
		1243	$msg->("reloaded");
		1244	};
		1245
		1246	sub perl_reload() {
		1247	_perl_reload {
		1248	warn $_[0];
		1249	print "$_[0]\n";
		1250	};
		1251	}
		1252
761	register "<global>", __PACKAGE__;	1253	register "<global>", __PACKAGE__;
762		1254
		1255	register_command "perl-reload" => sub {
		1256	my ($who, $arg) = @_;
		1257
		1258	if ($who->flag (FLAG_WIZ)) {
		1259	_perl_reload {
		1260	warn $_[0];
		1261	$who->message ($_[0]);
		1262	};
		1263	}
		1264	};
		1265
763	unshift @INC, $LIBDIR;	1266	unshift @INC, $LIBDIR;
764		1267
765	load_extensions;
766
767	$TICK_WATCHER = Event->timer (	1268	$TICK_WATCHER = Event->timer (
768	prio => 1,	1269	prio => 0,
769	at => $NEXT_TICK || 1,	1270	at => $NEXT_TICK || 1,
		1271	data => WF_AUTOCANCEL,
770	cb => sub {	1272	cb => sub {
771	cf::server_tick; # one server iteration	1273	cf::server_tick; # one server iteration
772		1274
773	my $NOW = Event::time;	1275	my $NOW = Event::time;
774	$NEXT_TICK += $TICK;	1276	$NEXT_TICK += $TICK;
775		1277
776	# if we are delayed by four ticks, skip them all	1278	# if we are delayed by four ticks or more, skip them all
777	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	1279	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
778		1280
779	$TICK_WATCHER->at ($NEXT_TICK);	1281	$TICK_WATCHER->at ($NEXT_TICK);
780	$TICK_WATCHER->start;	1282	$TICK_WATCHER->start;
781	},	1283	},
782	);	1284	);
783		1285
		1286	IO::AIO::max_poll_time $TICK * 0.2;
		1287
		1288	Event->io (fd => IO::AIO::poll_fileno,
		1289	poll => 'r',
		1290	prio => 5,
		1291	data => WF_AUTOCANCEL,
		1292	cb => \&IO::AIO::poll_cb);
		1293
784	1	1294	1
785		1295

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