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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.70 by root, Sun Oct 1 10:55:37 2006 UTC vs.
Revision 1.121 by root, Tue Jan 2 11:11:52 2007 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 3.3;
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Digest::MD5;
		21	use Fcntl;
		22	use IO::AIO 2.31 ();
		23	use YAML::Syck ();
10	use Time::HiRes;	24	use Time::HiRes;
11	use Event;	25
12	$Event::Eval = 1; # no idea why this is required, but it is	26	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		27
14	use strict;	28	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		29	$YAML::Syck::ImplicitUnicode = 1;
15		30
16	_init_vars;	31	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority
17		32
		33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
		34
18	our %COMMAND = ();	35	our %COMMAND = ();
		36	our %COMMAND_TIME = ();
		37	our %EXTCMD = ();
		38
19	our @EVENT;	39	our @EVENT;
20	our $LIBDIR = maps_directory "perl";	40	our $LIBDIR = datadir . "/ext";
21		41
22	our $TICK = MAX_TIME * 1e-6;	42	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	43	our $TICK_WATCHER;
24	our $NEXT_TICK;	44	our $NEXT_TICK;
		45	our $NOW;
25		46
26	our %CFG;	47	our %CFG;
27		48
		49	our $UPTIME; $UPTIME ||= time;
		50	our $RUNTIME;
		51
		52	our %MAP; # all maps
		53	our $LINK_MAP; # the special {link} map
		54	our $FREEZE;
		55	our $RANDOM_MAPS = cf::localdir . "/random";
		56	our %EXT_CORO;
		57
		58	binmode STDOUT;
		59	binmode STDERR;
		60
		61	# read virtual server time, if available
		62	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		63	open my $fh, "<", cf::localdir . "/runtime"
		64	or die "unable to read runtime file: $!";
		65	$RUNTIME = <$fh> + 0.;
		66	}
		67
		68	mkdir cf::localdir;
		69	mkdir cf::localdir . "/" . cf::playerdir;
		70	mkdir cf::localdir . "/" . cf::tmpdir;
		71	mkdir cf::localdir . "/" . cf::uniquedir;
		72	mkdir $RANDOM_MAPS;
		73
		74	# a special map that is always available
		75	our $LINK_MAP;
		76
		77	our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		78
28	#############################################################################	79	#############################################################################
29		80
30	=head2 GLOBAL VARIABLES	81	=head2 GLOBAL VARIABLES
31		82
32	=over 4	83	=over 4
		84
		85	=item $cf::UPTIME
		86
		87	The timestamp of the server start (so not actually an uptime).
		88
		89	=item $cf::RUNTIME
		90
		91	The time this server has run, starts at 0 and is increased by $cf::TICK on
		92	every server tick.
33		93
34	=item $cf::LIBDIR	94	=item $cf::LIBDIR
35		95
36	The perl library directory, where extensions and cf-specific modules can	96	The perl library directory, where extensions and cf-specific modules can
37	be found. It will be added to C<@INC> automatically.	97	be found. It will be added to C<@INC> automatically.
		98
		99	=item $cf::NOW
		100
		101	The time of the last (current) server tick.
38		102
39	=item $cf::TICK	103	=item $cf::TICK
40		104
41	The interval between server ticks, in seconds.	105	The interval between server ticks, in seconds.
42		106
…		…
50	=cut	114	=cut
51		115
52	BEGIN {	116	BEGIN {
53	*CORE::GLOBAL::warn = sub {	117	*CORE::GLOBAL::warn = sub {
54	my $msg = join "", @_;	118	my $msg = join "", @_;
		119	utf8::encode $msg;
		120
55	$msg .= "\n"	121	$msg .= "\n"
56	unless $msg =~ /\n$/;	122	unless $msg =~ /\n$/;
57		123
58	print STDERR "cfperl: $msg";
59	LOG llevError, "cfperl: $msg";	124	LOG llevError, "cfperl: $msg";
60	};	125	};
61	}	126	}
62		127
		128	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		129	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		130	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		131	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		132	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	133	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
64		134
65	# we bless all objects into (empty) derived classes to force a method lookup	135	# we bless all objects into (empty) derived classes to force a method lookup
66	# within the Safe compartment.	136	# within the Safe compartment.
67	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	137	for my $pkg (qw(
		138	cf::global cf::attachable
		139	cf::object cf::object::player
		140	cf::client cf::player
		141	cf::arch cf::living
		142	cf::map cf::party cf::region
		143	)) {
68	no strict 'refs';	144	no strict 'refs';
69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	145	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
70	}	146	}
71		147
72	$Event::DIED = sub {	148	$Event::DIED = sub {
…		…
74	};	150	};
75		151
76	my %ext_pkg;	152	my %ext_pkg;
77	my @exts;	153	my @exts;
78	my @hook;	154	my @hook;
79	my %command;
80	my %extcmd;
81		155
82	=head2 UTILITY FUNCTIONS	156	=head2 UTILITY FUNCTIONS
83		157
84	=over 4	158	=over 4
85		159
…		…
107	sub to_json($) {	181	sub to_json($) {
108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	182	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
109	JSON::Syck::Dump $_[0]	183	JSON::Syck::Dump $_[0]
110	}	184	}
111		185
		186	=item my $guard = cf::guard { BLOCK }
		187
		188	Run the given callback when the guard object gets destroyed (useful for
		189	coroutine cancellations).
		190
		191	You can call C<< ->cancel >> on the guard object to stop the block from
		192	being executed.
		193
		194	=cut
		195
		196	sub guard(&) {
		197	bless \(my $cb = $_[0]), cf::guard::;
		198	}
		199
		200	sub cf::guard::cancel {
		201	${$_[0]} = sub { };
		202	}
		203
		204	sub cf::guard::DESTROY {
		205	${$_[0]}->();
		206	}
		207
		208	=item cf::lock_wait $string
		209
		210	Wait until the given lock is available. See cf::lock_acquire.
		211
		212	=item my $lock = cf::lock_acquire $string
		213
		214	Wait until the given lock is available and then acquires it and returns
		215	a guard object. If the guard object gets destroyed (goes out of scope,
		216	for example when the coroutine gets canceled), the lock is automatically
		217	returned.
		218
		219	Lock names should begin with a unique identifier (for example, find_map
		220	uses map_find and load_map uses map_load).
		221
		222	=cut
		223
		224	our %LOCK;
		225
		226	sub lock_wait($) {
		227	my ($key) = @_;
		228
		229	# wait for lock, if any
		230	while ($LOCK{$key}) {
		231	push @{ $LOCK{$key} }, $Coro::current;
		232	Coro::schedule;
		233	}
		234	}
		235
		236	sub lock_acquire($) {
		237	my ($key) = @_;
		238
		239	# wait, to be sure we are not locked
		240	lock_wait $key;
		241
		242	$LOCK{$key} = [];
		243
		244	cf::guard {
		245	# wake up all waiters, to be on the safe side
		246	$_->ready for @{ delete $LOCK{$key} };
		247	}
		248	}
		249
		250	=item cf::sync_job { BLOCK }
		251
		252	The design of crossfire+ requires that the main coro ($Coro::main) is
		253	always able to handle events or runnable, as crossfire+ is only partly
		254	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		255
		256	If it must be done, put the blocking parts into C<sync_job>. This will run
		257	the given BLOCK in another coroutine while waiting for the result. The
		258	server will be frozen during this time, so the block should either finish
		259	fast or be very important.
		260
		261	=cut
		262
		263	sub sync_job(&) {
		264	my ($job) = @_;
		265
		266	if ($Coro::current == $Coro::main) {
		267	# this is the main coro, too bad, we have to block
		268	# till the operation succeeds, freezing the server :/
		269
		270	# TODO: use suspend/resume instead
		271	# (but this is cancel-safe)
		272	local $FREEZE = 1;
		273
		274	my $busy = 1;
		275	my @res;
		276
		277	(Coro::async {
		278	@res = eval { $job->() };
		279	warn $@ if $@;
		280	undef $busy;
		281	})->prio (Coro::PRIO_MAX);
		282
		283	while ($busy) {
		284	Coro::cede_notself;
		285	Event::one_event unless Coro::nready;
		286	}
		287
		288	wantarray ? @res : $res[0]
		289	} else {
		290	# we are in another coroutine, how wonderful, everything just works
		291
		292	$job->()
		293	}
		294	}
		295
		296	=item $coro = cf::coro { BLOCK }
		297
		298	Creates and returns a new coro. This coro is automcatially being canceled
		299	when the extension calling this is being unloaded.
		300
		301	=cut
		302
		303	sub coro(&) {
		304	my $cb = shift;
		305
		306	my $coro; $coro = async {
		307	eval {
		308	$cb->();
		309	};
		310	warn $@ if $@;
		311	};
		312
		313	$coro->on_destroy (sub {
		314	delete $EXT_CORO{$coro+0};
		315	});
		316	$EXT_CORO{$coro+0} = $coro;
		317
		318	$coro
		319	}
		320
		321	sub write_runtime {
		322	my $runtime = cf::localdir . "/runtime";
		323
		324	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		325	or return;
		326
		327	my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		328	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		329	and return;
		330
		331	aio_fsync $fh
		332	and return;
		333
		334	close $fh
		335	or return;
		336
		337	aio_rename "$runtime~", $runtime
		338	and return;
		339
		340	1
		341	}
		342
112	=back	343	=back
113		344
		345	=cut
		346
114	#############################################################################	347	#############################################################################
115		348
116	=head2 EVENTS AND OBJECT ATTACHMENTS	349	package cf::path;
		350
		351	sub new {
		352	my ($class, $path, $base) = @_;
		353
		354	$path = $path->as_string if ref $path;
		355
		356	my $self = bless { }, $class;
		357
		358	# {... are special paths that are not touched
		359	# ?xxx/... are special absolute paths
		360	# ?random/... random maps
		361	# /! non-realised random map exit
		362	# /... normal maps
		363	# ~/... per-player maps without a specific player (DO NOT USE)
		364	# ~user/... per-player map of a specific user
		365
		366	if ($path =~ /^{/) {
		367	# fine as it is
		368	} elsif ($path =~ s{^\?random/}{}) {
		369	Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
		370	$self->{random} = cf::from_json $data;
		371	} else {
		372	if ($path =~ s{^~([^/]+)?}{}) {
		373	$self->{user_rel} = 1;
		374
		375	if (defined $1) {
		376	$self->{user} = $1;
		377	} elsif ($base =~ m{^~([^/]+)/}) {
		378	$self->{user} = $1;
		379	} else {
		380	warn "cannot resolve user-relative path without user <$path,$base>\n";
		381	}
		382	} elsif ($path =~ /^\//) {
		383	# already absolute
		384	} else {
		385	$base =~ s{[^/]+/?$}{};
		386	return $class->new ("$base/$path");
		387	}
		388
		389	for ($path) {
		390	redo if s{/\.?/}{/};
		391	redo if s{/[^/]+/\.\./}{/};
		392	}
		393	}
		394
		395	$self->{path} = $path;
		396
		397	$self
		398	}
		399
		400	# the name / primary key / in-game path
		401	sub as_string {
		402	my ($self) = @_;
		403
		404	$self->{user_rel} ? "~$self->{user}$self->{path}"
		405	: $self->{random} ? "?random/$self->{path}"
		406	: $self->{path}
		407	}
		408
		409	# the displayed name, this is a one way mapping
		410	sub visible_name {
		411	my ($self) = @_;
		412
		413	# if (my $rmp = $self->{random}) {
		414	# # todo: be more intelligent about this
		415	# "?random/$rmp->{origin_map}+$rmp->{origin_x}+$rmp->{origin_y}/$rmp->{dungeon_level}"
		416	# } else {
		417	$self->as_string
		418	# }
		419	}
		420
		421	# escape the /'s in the path
		422	sub _escaped_path {
		423	# ∕ is U+2215
		424	(my $path = $_[0]{path}) =~ s/\//∕/g;
		425	$path
		426	}
		427
		428	# the original (read-only) location
		429	sub load_path {
		430	my ($self) = @_;
		431
		432	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		433	}
		434
		435	# the temporary/swap location
		436	sub save_path {
		437	my ($self) = @_;
		438
		439	$self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path
		440	: $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, $self->{path}
		441	: sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path
		442	}
		443
		444	# the unique path, might be eq to save_path
		445	sub uniq_path {
		446	my ($self) = @_;
		447
		448	$self->{user_rel} || $self->{random}
		449	? undef
		450	: sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path
		451	}
		452
		453	# return random map parameters, or undef
		454	sub random_map_params {
		455	my ($self) = @_;
		456
		457	$self->{random}
		458	}
		459
		460	# this is somewhat ugly, but style maps do need special treatment
		461	sub is_style_map {
		462	$_[0]{path} =~ m{^/styles/}
		463	}
		464
		465	package cf;
		466
		467	#############################################################################
		468
		469	=head2 ATTACHABLE OBJECTS
		470
		471	Many objects in crossfire are so-called attachable objects. That means you can
		472	attach callbacks/event handlers (a collection of which is called an "attachment")
		473	to it. All such attachable objects support the following methods.
		474
		475	In the following description, CLASS can be any of C<global>, C<object>
		476	C<player>, C<client> or C<map> (i.e. the attachable objects in
		477	crossfire+).
117		478
118	=over 4	479	=over 4
119		480
120	=item $object->attach ($attachment, key => $value...)
121
122	=item $object->detach ($attachment)
123
124	Attach/detach a pre-registered attachment to an object.
125
126	=item $player->attach ($attachment, key => $value...)
127
128	=item $player->detach ($attachment)
129
130	Attach/detach a pre-registered attachment to a player.
131
132	=item $map->attach ($attachment, key => $value...)	481	=item $attachable->attach ($attachment, key => $value...)
133		482
134	=item $map->detach ($attachment)	483	=item $attachable->detach ($attachment)
135		484
136	Attach/detach a pre-registered attachment to a map.	485	Attach/detach a pre-registered attachment to a specific object and give it
		486	the specified key/value pairs as arguments.
137		487
138	=item $bool = $object->attached ($name)	488	Example, attach a minesweeper attachment to the given object, making it a
		489	10x10 minesweeper game:
139		490
140	=item $bool = $player->attached ($name)	491	$obj->attach (minesweeper => width => 10, height => 10);
141		492
142	=item $bool = $map->attached ($name)	493	=item $bool = $attachable->attached ($name)
143		494
144	Checks wether the named attachment is currently attached to the object.	495	Checks wether the named attachment is currently attached to the object.
145		496
146	=item cf::attach_global ...	497	=item cf::CLASS->attach ...
147		498
148	Attach handlers for global events.	499	=item cf::CLASS->detach ...
149		500
150	This and all following C<attach_*>-functions expect any number of the	501	Define an anonymous attachment and attach it to all objects of the given
151	following handler/hook descriptions:	502	CLASS. See the next function for an explanation of its arguments.
		503
		504	You can attach to global events by using the C<cf::global> class.
		505
		506	Example, log all player logins:
		507
		508	cf::player->attach (
		509	on_login => sub {
		510	my ($pl) = @_;
		511	...
		512	},
		513	);
		514
		515	Example, attach to the jeweler skill:
		516
		517	cf::object->attach (
		518	type => cf::SKILL,
		519	subtype => cf::SK_JEWELER,
		520	on_use_skill => sub {
		521	my ($sk, $ob, $part, $dir, $msg) = @_;
		522	...
		523	},
		524	);
		525
		526	=item cf::CLASS::attachment $name, ...
		527
		528	Register an attachment by C<$name> through which attachable objects of the
		529	given CLASS can refer to this attachment.
		530
		531	Some classes such as crossfire maps and objects can specify attachments
		532	that are attached at load/instantiate time, thus the need for a name.
		533
		534	These calls expect any number of the following handler/hook descriptions:
152		535
153	=over 4	536	=over 4
154		537
155	=item prio => $number	538	=item prio => $number
156		539
…		…
158	by another C<prio> setting). Lower priority handlers get executed	541	by another C<prio> setting). Lower priority handlers get executed
159	earlier. The default priority is C<0>, and many built-in handlers are	542	earlier. The default priority is C<0>, and many built-in handlers are
160	registered at priority C<-1000>, so lower priorities should not be used	543	registered at priority C<-1000>, so lower priorities should not be used
161	unless you know what you are doing.	544	unless you know what you are doing.
162		545
		546	=item type => $type
		547
		548	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		549	given type of objects only (the additional parameter C<subtype> can be
		550	used to further limit to the given subtype).
		551
163	=item on_I<event> => \&cb	552	=item on_I<event> => \&cb
164		553
165	Call the given code reference whenever the named event happens (event is	554	Call the given code reference whenever the named event happens (event is
166	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	555	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
167	handlers are recognised generally depends on the type of object these	556	handlers are recognised generally depends on the type of object these
…		…
176	package and register them. Only handlers for eevents supported by the	565	package and register them. Only handlers for eevents supported by the
177	object/class are recognised.	566	object/class are recognised.
178		567
179	=back	568	=back
180		569
181	=item cf::attach_to_type $object_type, $subtype, ...	570	Example, define an attachment called "sockpuppet" that calls the given
		571	event handler when a monster attacks:
182		572
183	Attach handlers for a specific object type (e.g. TRANSPORT) and	573	cf::object::attachment sockpuppet =>
184	subtype. If C<$subtype> is zero or undef, matches all objects of the given	574	on_skill_attack => sub {
185	type.	575	my ($self, $victim) = @_;
186		576	...
187	=item cf::attach_to_objects ...
188
189	Attach handlers to all objects. Do not use this except for debugging or
190	very rare events, as handlers are (obviously) called for I<all> objects in
191	the game.
192
193	=item cf::attach_to_players ...
194
195	Attach handlers to all players.
196
197	=item cf::attach_to_maps ...
198
199	Attach handlers to all maps.
200
201	=item cf:register_attachment $name, ...
202
203	Register an attachment by name through which objects can refer to this
204	attachment.
205
206	=item cf:register_player_attachment $name, ...
207
208	Register an attachment by name through which players can refer to this
209	attachment.
210
211	=item cf:register_map_attachment $name, ...
212
213	Register an attachment by name through which maps can refer to this
214	attachment.
215
216	=cut
217
218	# the following variables are defined in .xs and must not be re-created
219	our @CB_GLOBAL = (); # registry for all global events
220	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
221	our @CB_PLAYER = ();
222	our @CB_TYPE = (); # registry for type (cf-object class) based events
223	our @CB_MAP = ();
224
225	my %attachment;
226
227	sub _attach_cb($\%$$$) {
228	my ($registry, $undo, $event, $prio, $cb) = @_;
229
230	use sort 'stable';
231
232	$cb = [$prio, $cb];
233
234	@{$registry->[$event]} = sort
235	{ $a->[0] cmp $b->[0] }
236	@{$registry->[$event] || []}, $cb;
237
238	push @{$undo->{cb}}, [$event, $cb];
239	}
240
241	# attach handles attaching event callbacks
242	# the only thing the caller has to do is pass the correct
243	# registry (== where the callback attaches to).
244	sub _attach(\@$@) {
245	my ($registry, $klass, @arg) = @_;
246
247	my $prio = 0;
248
249	my %undo = (
250	registry => $registry,
251	cb => [],
252	);
253
254	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
255
256	while (@arg) {
257	my $type = shift @arg;
258
259	if ($type eq "prio") {
260	$prio = shift @arg;
261
262	} elsif ($type eq "package") {
263	my $pkg = shift @arg;
264
265	while (my ($name, $id) = each %cb_id) {
266	if (my $cb = $pkg->can ($name)) {
267	_attach_cb $registry, %undo, $id, $prio, $cb;
268	}
269	}	577	}
270
271	} elsif (exists $cb_id{$type}) {
272	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
273
274	} elsif (ref $type) {
275	warn "attaching objects not supported, ignoring.\n";
276
277	} else {
278	shift @arg;
279	warn "attach argument '$type' not supported, ignoring.\n";
280	}
281	}
282
283	\%undo
284	}
285
286	sub _attach_attachment {
287	my ($obj, $name, %arg) = @_;
288
289	return if exists $obj->{_attachment}{$name};
290
291	my $res;
292
293	if (my $attach = $attachment{$name}) {
294	my $registry = $obj->registry;
295
296	for (@$attach) {
297	my ($klass, @attach) = @$_;
298	$res = _attach @$registry, $klass, @attach;
299	}
300
301	$obj->{$name} = \%arg;
302	} else {
303	warn "object uses attachment '$name' that is not available, postponing.\n";
304	}
305
306	$obj->{_attachment}{$name} = undef;
307
308	$res->{attachment} = $name;
309	$res
310	}
311
312	*cf::object::attach =
313	*cf::player::attach =
314	*cf::map::attach = sub {
315	my ($obj, $name, %arg) = @_;
316
317	_attach_attachment $obj, $name, %arg;
318	};
319
320	# all those should be optimised
321	*cf::object::detach =
322	*cf::player::detach =
323	*cf::map::detach = sub {
324	my ($obj, $name) = @_;
325
326	delete $obj->{_attachment}{$name};
327	reattach ($obj);
328	};
329
330	*cf::object::attached =
331	*cf::player::attached =
332	*cf::map::attached = sub {
333	my ($obj, $name) = @_;
334
335	exists $obj->{_attachment}{$name}
336	};
337
338	sub attach_global {
339	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
340	}
341
342	sub attach_to_type {
343	my $type = shift;
344	my $subtype = shift;
345
346	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
347	}
348
349	sub attach_to_objects {
350	_attach @CB_OBJECT, KLASS_OBJECT, @_
351	}
352
353	sub attach_to_players {
354	_attach @CB_PLAYER, KLASS_PLAYER, @_
355	}
356
357	sub attach_to_maps {
358	_attach @CB_MAP, KLASS_MAP, @_
359	}
360
361	sub register_attachment {
362	my $name = shift;
363
364	$attachment{$name} = [[KLASS_OBJECT, @_]];
365	}
366
367	sub register_player_attachment {
368	my $name = shift;
369
370	$attachment{$name} = [[KLASS_PLAYER, @_]];
371	}
372
373	sub register_map_attachment {
374	my $name = shift;
375
376	$attachment{$name} = [[KLASS_MAP, @_]];
377	}
378
379	our $override;
380	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
381
382	sub override {
383	$override = 1;
384	@invoke_results = ();
385	}
386
387	sub do_invoke {
388	my $event = shift;
389	my $callbacks = shift;
390
391	@invoke_results = ();
392
393	local $override;
394
395	for (@$callbacks) {
396	eval { &{$_->[1]} };
397
398	if ($@) {
399	warn "$@";
400	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
401	override;
402	}
403
404	return 1 if $override;
405	}
406
407	0	578	}
408	}
409		579
410	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	580	=item $attachable->valid
411
412	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
413
414	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
415
416	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
417
418	Generate a global/object/player/map-specific event with the given arguments.
419
420	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
421	removed in future versions), and there is no public API to access override
422	results (if you must, access C<@cf::invoke_results> directly).
423
424	=back
425
426	#############################################################################
427
428	=head2 METHODS VALID FOR ALL CORE OBJECTS
429
430	=over 4
431
432	=item $object->valid, $player->valid, $map->valid
433		581
434	Just because you have a perl object does not mean that the corresponding	582	Just because you have a perl object does not mean that the corresponding
435	C-level object still exists. If you try to access an object that has no	583	C-level object still exists. If you try to access an object that has no
436	valid C counterpart anymore you get an exception at runtime. This method	584	valid C counterpart anymore you get an exception at runtime. This method
437	can be used to test for existence of the C object part without causing an	585	can be used to test for existence of the C object part without causing an
438	exception.	586	exception.
439		587
		588	=cut
		589
		590	# the following variables are defined in .xs and must not be re-created
		591	our @CB_GLOBAL = (); # registry for all global events
		592	our @CB_ATTACHABLE = (); # registry for all attachables
		593	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		594	our @CB_PLAYER = ();
		595	our @CB_CLIENT = ();
		596	our @CB_TYPE = (); # registry for type (cf-object class) based events
		597	our @CB_MAP = ();
		598
		599	my %attachment;
		600
		601	sub _attach_cb($$$$) {
		602	my ($registry, $event, $prio, $cb) = @_;
		603
		604	use sort 'stable';
		605
		606	$cb = [$prio, $cb];
		607
		608	@{$registry->[$event]} = sort
		609	{ $a->[0] cmp $b->[0] }
		610	@{$registry->[$event] || []}, $cb;
		611	}
		612
		613	# hack
		614	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		615
		616	# attach handles attaching event callbacks
		617	# the only thing the caller has to do is pass the correct
		618	# registry (== where the callback attaches to).
		619	sub _attach {
		620	my ($registry, $klass, @arg) = @_;
		621
		622	my $object_type;
		623	my $prio = 0;
		624	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		625
		626	#TODO: get rid of this hack
		627	if ($attachable_klass{$klass}) {
		628	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		629	}
		630
		631	while (@arg) {
		632	my $type = shift @arg;
		633
		634	if ($type eq "prio") {
		635	$prio = shift @arg;
		636
		637	} elsif ($type eq "type") {
		638	$object_type = shift @arg;
		639	$registry = $CB_TYPE[$object_type] ||= [];
		640
		641	} elsif ($type eq "subtype") {
		642	defined $object_type or Carp::croak "subtype specified without type";
		643	my $object_subtype = shift @arg;
		644	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		645
		646	} elsif ($type eq "package") {
		647	my $pkg = shift @arg;
		648
		649	while (my ($name, $id) = each %cb_id) {
		650	if (my $cb = $pkg->can ($name)) {
		651	_attach_cb $registry, $id, $prio, $cb;
		652	}
		653	}
		654
		655	} elsif (exists $cb_id{$type}) {
		656	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		657
		658	} elsif (ref $type) {
		659	warn "attaching objects not supported, ignoring.\n";
		660
		661	} else {
		662	shift @arg;
		663	warn "attach argument '$type' not supported, ignoring.\n";
		664	}
		665	}
		666	}
		667
		668	sub _object_attach {
		669	my ($obj, $name, %arg) = @_;
		670
		671	return if exists $obj->{_attachment}{$name};
		672
		673	if (my $attach = $attachment{$name}) {
		674	my $registry = $obj->registry;
		675
		676	for (@$attach) {
		677	my ($klass, @attach) = @$_;
		678	_attach $registry, $klass, @attach;
		679	}
		680
		681	$obj->{$name} = \%arg;
		682	} else {
		683	warn "object uses attachment '$name' that is not available, postponing.\n";
		684	}
		685
		686	$obj->{_attachment}{$name} = undef;
		687	}
		688
		689	sub cf::attachable::attach {
		690	if (ref $_[0]) {
		691	_object_attach @_;
		692	} else {
		693	_attach shift->_attach_registry, @_;
		694	}
		695	};
		696
		697	# all those should be optimised
		698	sub cf::attachable::detach {
		699	my ($obj, $name) = @_;
		700
		701	if (ref $obj) {
		702	delete $obj->{_attachment}{$name};
		703	reattach ($obj);
		704	} else {
		705	Carp::croak "cannot, currently, detach class attachments";
		706	}
		707	};
		708
		709	sub cf::attachable::attached {
		710	my ($obj, $name) = @_;
		711
		712	exists $obj->{_attachment}{$name}
		713	}
		714
		715	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		716	eval "#line " . __LINE__ . " 'cf.pm'
		717	sub cf::\L$klass\E::_attach_registry {
		718	(\\\@CB_$klass, KLASS_$klass)
		719	}
		720
		721	sub cf::\L$klass\E::attachment {
		722	my \$name = shift;
		723
		724	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		725	}
		726	";
		727	die if $@;
		728	}
		729
		730	our $override;
		731	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		732
		733	sub override {
		734	$override = 1;
		735	@invoke_results = ();
		736	}
		737
		738	sub do_invoke {
		739	my $event = shift;
		740	my $callbacks = shift;
		741
		742	@invoke_results = ();
		743
		744	local $override;
		745
		746	for (@$callbacks) {
		747	eval { &{$_->[1]} };
		748
		749	if ($@) {
		750	warn "$@";
		751	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		752	override;
		753	}
		754
		755	return 1 if $override;
		756	}
		757
		758	0
		759	}
		760
		761	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		762
		763	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		764
		765	Generate an object-specific event with the given arguments.
		766
		767	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		768	removed in future versions), and there is no public API to access override
		769	results (if you must, access C<@cf::invoke_results> directly).
		770
440	=back	771	=back
441		772
442	=cut	773	=cut
443
444	*cf::object::valid =
445	*cf::player::valid =
446	*cf::map::valid = \&cf::_valid;
447		774
448	#############################################################################	775	#############################################################################
449	# object support	776	# object support
450		777
451	sub instantiate {
452	my ($obj, $data) = @_;
453
454	$data = from_json $data;
455
456	for (@$data) {
457	my ($name, $args) = @$_;
458
459	$obj->attach ($name, %{$args || {} });
460	}
461	}
462
463	# basically do the same as instantiate, without calling instantiate
464	sub reattach {	778	sub reattach {
		779	# basically do the same as instantiate, without calling instantiate
465	my ($obj) = @_;	780	my ($obj) = @_;
		781
466	my $registry = $obj->registry;	782	my $registry = $obj->registry;
467		783
468	@$registry = ();	784	@$registry = ();
469		785
470	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	786	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
471		787
472	for my $name (keys %{ $obj->{_attachment} || {} }) {	788	for my $name (keys %{ $obj->{_attachment} || {} }) {
473	if (my $attach = $attachment{$name}) {	789	if (my $attach = $attachment{$name}) {
474	for (@$attach) {	790	for (@$attach) {
475	my ($klass, @attach) = @$_;	791	my ($klass, @attach) = @$_;
476	_attach @$registry, $klass, @attach;	792	_attach $registry, $klass, @attach;
477	}	793	}
478	} else {	794	} else {
479	warn "object uses attachment '$name' that is not available, postponing.\n";	795	warn "object uses attachment '$name' that is not available, postponing.\n";
480	}	796	}
481	}	797	}
482	}	798	}
483		799
484	sub object_freezer_save {	800	cf::attachable->attach (
485	my ($filename, $rdata, $objs) = @_;
486
487	if (length $$rdata) {
488	warn sprintf "saving %s (%d,%d)\n",
489	$filename, length $$rdata, scalar @$objs;
490
491	if (open my $fh, ">:raw", "$filename~") {
492	chmod SAVE_MODE, $fh;
493	syswrite $fh, $$rdata;
494	close $fh;
495
496	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
497	chmod SAVE_MODE, $fh;
498	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
499	close $fh;
500	rename "$filename.pst~", "$filename.pst";
501	} else {
502	unlink "$filename.pst";
503	}
504
505	rename "$filename~", $filename;
506	} else {
507	warn "FATAL: $filename~: $!\n";
508	}
509	} else {
510	unlink $filename;
511	unlink "$filename.pst";
512	}
513	}
514
515	sub object_thawer_load {
516	my ($filename) = @_;
517
518	local $/;
519
520	my $av;
521
522	#TODO: use sysread etc.
523	if (open my $data, "<:raw:perlio", $filename) {
524	$data = <$data>;
525	if (open my $pst, "<:raw:perlio", "$filename.pst") {
526	$av = eval { (Storable::thaw <$pst>)->{objs} };
527	}
528	return ($data, $av);
529	}
530
531	()
532	}
533
534	attach_to_objects
535	prio => -1000000,	801	prio => -1000000,
		802	on_instantiate => sub {
		803	my ($obj, $data) = @_;
		804
		805	$data = from_json $data;
		806
		807	for (@$data) {
		808	my ($name, $args) = @$_;
		809
		810	$obj->attach ($name, %{$args || {} });
		811	}
		812	},
		813	on_reattach => \&reattach,
536	on_clone => sub {	814	on_clone => sub {
537	my ($src, $dst) = @_;	815	my ($src, $dst) = @_;
538		816
539	@{$dst->registry} = @{$src->registry};	817	@{$dst->registry} = @{$src->registry};
540		818
541	%$dst = %$src;	819	%$dst = %$src;
542		820
543	%{$dst->{_attachment}} = %{$src->{_attachment}}	821	%{$dst->{_attachment}} = %{$src->{_attachment}}
544	if exists $src->{_attachment};	822	if exists $src->{_attachment};
545	},	823	},
546	;	824	);
		825
		826	sub object_freezer_save {
		827	my ($filename, $rdata, $objs) = @_;
		828
		829	sync_job {
		830	if (length $$rdata) {
		831	warn sprintf "saving %s (%d,%d)\n",
		832	$filename, length $$rdata, scalar @$objs;
		833
		834	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		835	chmod SAVE_MODE, $fh;
		836	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		837	aio_fsync $fh;
		838	close $fh;
		839
		840	if (@$objs) {
		841	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		842	chmod SAVE_MODE, $fh;
		843	my $data = Storable::nfreeze { version => 1, objs => $objs };
		844	aio_write $fh, 0, (length $data), $data, 0;
		845	aio_fsync $fh;
		846	close $fh;
		847	aio_rename "$filename.pst~", "$filename.pst";
		848	}
		849	} else {
		850	aio_unlink "$filename.pst";
		851	}
		852
		853	aio_rename "$filename~", $filename;
		854	} else {
		855	warn "FATAL: $filename~: $!\n";
		856	}
		857	} else {
		858	aio_unlink $filename;
		859	aio_unlink "$filename.pst";
		860	}
		861	}
		862	}
		863
		864	sub object_freezer_as_string {
		865	my ($rdata, $objs) = @_;
		866
		867	use Data::Dumper;
		868
		869	$$rdata . Dumper $objs
		870	}
		871
		872	sub object_thawer_load {
		873	my ($filename) = @_;
		874
		875	my ($data, $av);
		876
		877	(aio_load $filename, $data) >= 0
		878	or return;
		879
		880	unless (aio_stat "$filename.pst") {
		881	(aio_load "$filename.pst", $av) >= 0
		882	or return;
		883	$av = eval { (Storable::thaw $av)->{objs} };
		884	}
		885
		886	warn sprintf "loading %s (%d)\n",
		887	$filename, length $data, scalar @{$av || []};#d#
		888	return ($data, $av);
		889	}
547		890
548	#############################################################################	891	#############################################################################
549	# old plug-in events	892	# command handling &c
550		893
551	sub inject_event {	894	=item cf::register_command $name => \&callback($ob,$args);
552	my $extension = shift;
553	my $event_code = shift;
554		895
555	my $cb = $hook[$event_code]{$extension}	896	Register a callback for execution when the client sends the user command
556	or return;	897	$name.
557		898
558	&$cb	899	=cut
559	}
560
561	sub inject_global_event {
562	my $event = shift;
563
564	my $cb = $hook[$event]
565	or return;
566
567	List::Util::max map &$_, values %$cb
568	}
569
570	sub inject_command {
571	my ($name, $obj, $params) = @_;
572
573	for my $cmd (@{ $command{$name} }) {
574	$cmd->[1]->($obj, $params);
575	}
576
577	-1
578	}
579		900
580	sub register_command {	901	sub register_command {
581	my ($name, $time, $cb) = @_;	902	my ($name, $cb) = @_;
582		903
583	my $caller = caller;	904	my $caller = caller;
584	#warn "registering command '$name/$time' to '$caller'";	905	#warn "registering command '$name/$time' to '$caller'";
585		906
586	push @{ $command{$name} }, [$time, $cb, $caller];	907	push @{ $COMMAND{$name} }, [$caller, $cb];
587	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
588	}	908	}
		909
		910	=item cf::register_extcmd $name => \&callback($pl,$packet);
		911
		912	Register a callbackf ro execution when the client sends an extcmd packet.
		913
		914	If the callback returns something, it is sent back as if reply was being
		915	called.
		916
		917	=cut
589		918
590	sub register_extcmd {	919	sub register_extcmd {
591	my ($name, $cb) = @_;	920	my ($name, $cb) = @_;
592		921
593	my $caller = caller;	922	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";	923	#warn "registering extcmd '$name' to '$caller'";
595		924
596	$extcmd{$name} = [$cb, $caller];	925	$EXTCMD{$name} = [$cb, $caller];
597	}	926	}
		927
		928	cf::player->attach (
		929	on_command => sub {
		930	my ($pl, $name, $params) = @_;
		931
		932	my $cb = $COMMAND{$name}
		933	or return;
		934
		935	for my $cmd (@$cb) {
		936	$cmd->[1]->($pl->ob, $params);
		937	}
		938
		939	cf::override;
		940	},
		941	on_extcmd => sub {
		942	my ($pl, $buf) = @_;
		943
		944	my $msg = eval { from_json $buf };
		945
		946	if (ref $msg) {
		947	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		948	if (my %reply = $cb->[0]->($pl, $msg)) {
		949	$pl->ext_reply ($msg->{msgid}, %reply);
		950	}
		951	}
		952	} else {
		953	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		954	}
		955
		956	cf::override;
		957	},
		958	);
598		959
599	sub register {	960	sub register {
600	my ($base, $pkg) = @_;	961	my ($base, $pkg) = @_;
601		962
602	#TODO	963	#TODO
…		…
621	. "#line 1 \"$path\"\n{\n"	982	. "#line 1 \"$path\"\n{\n"
622	. (do { local $/; <$fh> })	983	. (do { local $/; <$fh> })
623	. "\n};\n1";	984	. "\n};\n1";
624		985
625	eval $source	986	eval $source
626	or die "$path: $@";	987	or die $@ ? "$path: $@\n"
		988	: "extension disabled.\n";
627		989
628	push @exts, $pkg;	990	push @exts, $pkg;
629	$ext_pkg{$base} = $pkg;	991	$ext_pkg{$base} = $pkg;
630		992
631	# no strict 'refs';	993	# no strict 'refs';
…		…
644	# for my $idx (0 .. $#PLUGIN_EVENT) {	1006	# for my $idx (0 .. $#PLUGIN_EVENT) {
645	# delete $hook[$idx]{$pkg};	1007	# delete $hook[$idx]{$pkg};
646	# }	1008	# }
647		1009
648	# remove commands	1010	# remove commands
649	for my $name (keys %command) {	1011	for my $name (keys %COMMAND) {
650	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };	1012	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
651		1013
652	if (@cb) {	1014	if (@cb) {
653	$command{$name} = \@cb;	1015	$COMMAND{$name} = \@cb;
654	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
655	} else {	1016	} else {
656	delete $command{$name};
657	delete $COMMAND{"$name\000"};	1017	delete $COMMAND{$name};
658	}	1018	}
659	}	1019	}
660		1020
661	# remove extcmds	1021	# remove extcmds
662	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {	1022	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
663	delete $extcmd{$name};	1023	delete $EXTCMD{$name};
664	}	1024	}
665		1025
666	if (my $cb = $pkg->can ("unload")) {	1026	if (my $cb = $pkg->can ("unload")) {
667	eval {	1027	eval {
668	$cb->($pkg);	1028	$cb->($pkg);
…		…
672		1032
673	Symbol::delete_package $pkg;	1033	Symbol::delete_package $pkg;
674	}	1034	}
675		1035
676	sub load_extensions {	1036	sub load_extensions {
677	my $LIBDIR = maps_directory "perl";
678
679	for my $ext (<$LIBDIR/*.ext>) {	1037	for my $ext (<$LIBDIR/*.ext>) {
680	next unless -r $ext;	1038	next unless -r $ext;
681	eval {	1039	eval {
682	load_extension $ext;	1040	load_extension $ext;
683	1	1041	1
684	} or warn "$ext not loaded: $@";	1042	} or warn "$ext not loaded: $@";
685	}	1043	}
686	}	1044	}
687		1045
688	#############################################################################	1046	#############################################################################
689	# extcmd framework, basically convert ext <msg>
690	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
691
692	attach_to_players
693	on_extcmd => sub {
694	my ($pl, $buf) = @_;
695
696	my $msg = eval { from_json $buf };
697
698	if (ref $msg) {
699	if (my $cb = $extcmd{$msg->{msgtype}}) {
700	if (my %reply = $cb->[0]->($pl, $msg)) {
701	$pl->ext_reply ($msg->{msgid}, %reply);
702	}
703	}
704	} else {
705	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
706	}
707
708	cf::override;
709	},
710	;
711
712	#############################################################################
713	# load/save/clean perl data associated with a map	1047	# load/save/clean perl data associated with a map
714		1048
715	*cf::mapsupport::on_clean = sub {	1049	*cf::mapsupport::on_clean = sub {
716	my ($map) = @_;	1050	my ($map) = @_;
717		1051
…		…
719	defined $path or return;	1053	defined $path or return;
720		1054
721	unlink "$path.pst";	1055	unlink "$path.pst";
722	};	1056	};
723		1057
724	attach_to_maps prio => -10000, package => cf::mapsupport::;	1058	cf::map->attach (prio => -10000, package => cf::mapsupport::);
725		1059
726	#############################################################################	1060	#############################################################################
727	# load/save perl data associated with player->ob objects	1061	# load/save perl data associated with player->ob objects
728		1062
729	sub all_objects(@) {	1063	sub all_objects(@) {
730	@_, map all_objects ($_->inv), @_	1064	@_, map all_objects ($_->inv), @_
731	}	1065	}
732		1066
733	# TODO: compatibility cruft, remove when no longer needed	1067	# TODO: compatibility cruft, remove when no longer needed
734	attach_to_players	1068	cf::player->attach (
735	on_load => sub {	1069	on_load => sub {
736	my ($pl, $path) = @_;	1070	my ($pl, $path) = @_;
737		1071
738	for my $o (all_objects $pl->ob) {	1072	for my $o (all_objects $pl->ob) {
739	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1073	if (my $value = $o->get_ob_key_value ("_perl_data")) {
…		…
741		1075
742	%$o = %{ Storable::thaw pack "H*", $value };	1076	%$o = %{ Storable::thaw pack "H*", $value };
743	}	1077	}
744	}	1078	}
745	},	1079	},
746	;	1080	);
747		1081
748	#############################################################################	1082	#############################################################################
749		1083
750	=head2 CORE EXTENSIONS	1084	=head2 CORE EXTENSIONS
751		1085
752	Functions and methods that extend core crossfire objects.	1086	Functions and methods that extend core crossfire objects.
		1087
		1088	=head3 cf::player
753		1089
754	=over 4	1090	=over 4
755		1091
756	=item cf::player::exists $login	1092	=item cf::player::exists $login
757		1093
…		…
762	sub cf::player::exists($) {	1098	sub cf::player::exists($) {
763	cf::player::find $_[0]	1099	cf::player::find $_[0]
764	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1100	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
765	}	1101	}
766		1102
		1103	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1104
		1105	Sends an ext reply to the player.
		1106
		1107	=cut
		1108
		1109	sub cf::player::ext_reply($$$%) {
		1110	my ($self, $id, %msg) = @_;
		1111
		1112	$msg{msgid} = $id;
		1113
		1114	$self->send ("ext " . to_json \%msg);
		1115	}
		1116
		1117	=back
		1118
		1119
		1120	=head3 cf::map
		1121
		1122	=over 4
		1123
		1124	=cut
		1125
		1126	package cf::map;
		1127
		1128	use Fcntl;
		1129	use Coro::AIO;
		1130
		1131	our $MAX_RESET = 7200;
		1132	our $DEFAULT_RESET = 3600;
		1133
		1134	sub generate_random_map {
		1135	my ($path, $rmp) = @_;
		1136
		1137	# mit "rum" bekleckern, nicht
		1138	cf::map::_create_random_map
		1139	$path,
		1140	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1141	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1142	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1143	$rmp->{exit_on_final_map},
		1144	$rmp->{xsize}, $rmp->{ysize},
		1145	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1146	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1147	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1148	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1149	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1150	(cf::region::find $rmp->{region})
		1151	}
		1152
		1153	# and all this just because we cannot iterate over
		1154	# all maps in C++...
		1155	sub change_all_map_light {
		1156	my ($change) = @_;
		1157
		1158	$_->change_map_light ($change) for values %cf::MAP;
		1159	}
		1160
		1161	sub try_load_header($) {
		1162	my ($path) = @_;
		1163
		1164	utf8::encode $path;
		1165	aio_open $path, O_RDONLY, 0
		1166	or return;
		1167
		1168	my $map = cf::map::new
		1169	or return;
		1170
		1171	$map->load_header ($path)
		1172	or return;
		1173
		1174	$map->{load_path} = $path;
		1175
		1176	$map
		1177	}
		1178
		1179	sub find_map {
		1180	my ($path, $origin) = @_;
		1181
		1182	#warn "find_map<$path,$origin>\n";#d#
		1183
		1184	$path = new cf::path $path, $origin && $origin->path;
		1185	my $key = $path->as_string;
		1186
		1187	cf::lock_wait "map_find:$key";
		1188
		1189	$cf::MAP{$key} || do {
		1190	my $guard = cf::lock_acquire "map_find:$key";
		1191
		1192	# do it the slow way
		1193	my $map = try_load_header $path->save_path;
		1194
		1195	if ($map) {
		1196	# safety
		1197	$map->{instantiate_time} = $cf::RUNTIME
		1198	if $map->{instantiate_time} > $cf::RUNTIME;
		1199	} else {
		1200	if (my $rmp = $path->random_map_params) {
		1201	$map = generate_random_map $key, $rmp;
		1202	} else {
		1203	$map = try_load_header $path->load_path;
		1204	}
		1205
		1206	$map or return;
		1207
		1208	$map->{load_original} = 1;
		1209	$map->{instantiate_time} = $cf::RUNTIME;
		1210	$map->instantiate;
		1211
		1212	# per-player maps become, after loading, normal maps
		1213	$map->per_player (0) if $path->{user_rel};
		1214	}
		1215
		1216	$map->path ($key);
		1217	$map->{path} = $path;
		1218	$map->{last_save} = $cf::RUNTIME;
		1219	$map->last_access ($cf::RUNTIME);
		1220
		1221	if ($map->should_reset) {
		1222	$map->reset;
		1223	$map = find_map $path;
		1224	}
		1225
		1226	$cf::MAP{$key} = $map
		1227	}
		1228	}
		1229
		1230	sub load {
		1231	my ($self) = @_;
		1232
		1233	my $path = $self->{path};
		1234	my $guard = cf::lock_acquire "map_load:" . $path->as_string;
		1235
		1236	return if $self->in_memory != cf::MAP_SWAPPED;
		1237
		1238	$self->in_memory (cf::MAP_LOADING);
		1239
		1240	$self->alloc;
		1241	$self->load_objects ($self->{load_path}, 1)
		1242	or return;
		1243
		1244	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1245	if delete $self->{load_original};
		1246
		1247	if (my $uniq = $path->uniq_path) {
		1248	utf8::encode $uniq;
		1249	if (aio_open $uniq, O_RDONLY, 0) {
		1250	$self->clear_unique_items;
		1251	$self->load_objects ($uniq, 0);
		1252	}
		1253	}
		1254
		1255	# now do the right thing for maps
		1256	$self->link_multipart_objects;
		1257
		1258	if ($self->{path}->is_style_map) {
		1259	$self->{deny_save} = 1;
		1260	$self->{deny_reset} = 1;
		1261	} else {
		1262	$self->fix_auto_apply;
		1263	$self->decay_objects;
		1264	$self->update_buttons;
		1265	$self->set_darkness_map;
		1266	$self->difficulty ($self->estimate_difficulty)
		1267	unless $self->difficulty;
		1268	$self->activate;
		1269	}
		1270
		1271	$self->in_memory (cf::MAP_IN_MEMORY);
		1272	}
		1273
		1274	sub load_map_sync {
		1275	my ($path, $origin) = @_;
		1276
		1277	#warn "load_map_sync<$path, $origin>\n";#d#
		1278
		1279	cf::sync_job {
		1280	my $map = cf::map::find_map $path, $origin
		1281	or return;
		1282	$map->load;
		1283	$map
		1284	}
		1285	}
		1286
		1287	sub save {
		1288	my ($self) = @_;
		1289
		1290	$self->{last_save} = $cf::RUNTIME;
		1291
		1292	return unless $self->dirty;
		1293
		1294	my $save = $self->{path}->save_path; utf8::encode $save;
		1295	my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
		1296
		1297	$self->{load_path} = $save;
		1298
		1299	return if $self->{deny_save};
		1300
		1301	if ($uniq) {
		1302	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1303	$self->save_objects ($uniq, cf::IO_UNIQUES);
		1304	} else {
		1305	$self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
		1306	}
		1307	}
		1308
		1309	sub swap_out {
		1310	my ($self) = @_;
		1311
		1312	return if $self->players;
		1313	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1314	return if $self->{deny_save};
		1315
		1316	$self->save;
		1317	$self->clear;
		1318	$self->in_memory (cf::MAP_SWAPPED);
		1319	}
		1320
		1321	sub reset_at {
		1322	my ($self) = @_;
		1323
		1324	# TODO: safety, remove and allow resettable per-player maps
		1325	return 1e99 if $self->{path}{user_rel};
		1326	return 1e99 if $self->{deny_reset};
		1327
		1328	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1329	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1330
		1331	$time + $to
		1332	}
		1333
		1334	sub should_reset {
		1335	my ($self) = @_;
		1336
		1337	$self->reset_at <= $cf::RUNTIME
		1338	}
		1339
		1340	sub unlink_save {
		1341	my ($self) = @_;
		1342
		1343	utf8::encode (my $save = $self->{path}->save_path);
		1344	aioreq_pri 3; IO::AIO::aio_unlink $save;
		1345	aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
		1346	}
		1347
		1348	sub rename {
		1349	my ($self, $new_path) = @_;
		1350
		1351	$self->unlink_save;
		1352
		1353	delete $cf::MAP{$self->path};
		1354	$self->{path} = new cf::path $new_path;
		1355	$self->path ($self->{path}->as_string);
		1356	$cf::MAP{$self->path} = $self;
		1357
		1358	$self->save;
		1359	}
		1360
		1361	sub reset {
		1362	my ($self) = @_;
		1363
		1364	return if $self->players;
		1365	return if $self->{path}{user_rel};#d#
		1366
		1367	warn "resetting map ", $self->path;#d#
		1368
		1369	delete $cf::MAP{$self->path};
		1370
		1371	$_->clear_links_to ($self) for values %cf::MAP;
		1372
		1373	$self->unlink_save;
		1374	$self->destroy;
		1375	}
		1376
		1377	my $nuke_counter = "aaaa";
		1378
		1379	sub nuke {
		1380	my ($self) = @_;
		1381
		1382	$self->{deny_save} = 1;
		1383	$self->reset_timeout (1);
		1384	$self->rename ("{nuke}/" . ($nuke_counter++));
		1385	$self->reset; # polite request, might not happen
		1386	}
		1387
		1388	sub customise_for {
		1389	my ($map, $ob) = @_;
		1390
		1391	if ($map->per_player) {
		1392	return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path};
		1393	}
		1394
		1395	$map
		1396	}
		1397
		1398	sub emergency_save {
		1399	local $cf::FREEZE = 1;
		1400
		1401	warn "enter emergency map save\n";
		1402
		1403	cf::sync_job {
		1404	warn "begin emergency map save\n";
		1405	$_->save for values %cf::MAP;
		1406	};
		1407
		1408	warn "end emergency map save\n";
		1409	}
		1410
		1411	package cf;
		1412
		1413	=back
		1414
		1415
		1416	=head3 cf::object::player
		1417
		1418	=over 4
		1419
767	=item $player->reply ($npc, $msg[, $flags])	1420	=item $player_object->reply ($npc, $msg[, $flags])
768		1421
769	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1422	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
770	can be C<undef>. Does the right thing when the player is currently in a	1423	can be C<undef>. Does the right thing when the player is currently in a
771	dialogue with the given NPC character.	1424	dialogue with the given NPC character.
772		1425
773	=cut	1426	=cut
774		1427
775	# rough implementation of a future "reply" method that works	1428	# rough implementation of a future "reply" method that works
776	# with dialog boxes.	1429	# with dialog boxes.
		1430	#TODO: the first argument must go, split into a $npc->reply_to ( method
777	sub cf::object::player::reply($$$;$) {	1431	sub cf::object::player::reply($$$;$) {
778	my ($self, $npc, $msg, $flags) = @_;	1432	my ($self, $npc, $msg, $flags) = @_;
779		1433
780	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1434	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
781		1435
…		…
785	$msg = $npc->name . " says: $msg" if $npc;	1439	$msg = $npc->name . " says: $msg" if $npc;
786	$self->message ($msg, $flags);	1440	$self->message ($msg, $flags);
787	}	1441	}
788	}	1442	}
789		1443
790	=item $player->ext_reply ($msgid, $msgtype, %msg)	1444	=item $player_object->may ("access")
791		1445
792	Sends an ext reply to the player.	1446	Returns wether the given player is authorized to access resource "access"
		1447	(e.g. "command_wizcast").
793		1448
794	=cut	1449	=cut
795		1450
796	sub cf::player::ext_reply($$$%) {	1451	sub cf::object::player::may {
		1452	my ($self, $access) = @_;
		1453
		1454	$self->flag (cf::FLAG_WIZ) ||
		1455	(ref $cf::CFG{"may_$access"}
		1456	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1457	: $cf::CFG{"may_$access"})
		1458	}
		1459
		1460	=item $player_object->enter_link
		1461
		1462	Freezes the player and moves him/her to a special map (C<{link}>).
		1463
		1464	The player should be reaosnably safe there for short amounts of time. You
		1465	I<MUST> call C<leave_link> as soon as possible, though.
		1466
		1467	=item $player_object->leave_link ($map, $x, $y)
		1468
		1469	Moves the player out of the specila link map onto the given map. If the
		1470	map is not valid (or omitted), the player will be moved back to the
		1471	location he/she was before the call to C<enter_link>, or, if that fails,
		1472	to the emergency map position.
		1473
		1474	Might block.
		1475
		1476	=cut
		1477
		1478	sub cf::object::player::enter_link {
		1479	my ($self) = @_;
		1480
		1481	$self->deactivate_recursive;
		1482
		1483	return if $self->map == $LINK_MAP;
		1484
		1485	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1486	if $self->map;
		1487
		1488	$self->enter_map ($LINK_MAP, 20, 20);
		1489	}
		1490
		1491	sub cf::object::player::leave_link {
		1492	my ($self, $map, $x, $y) = @_;
		1493
		1494	my $link_pos = delete $self->{_link_pos};
		1495
		1496	unless ($map) {
		1497	# restore original map position
		1498	($map, $x, $y) = @{ $link_pos || [] };
		1499	$map = cf::map::find_map $map;
		1500
		1501	unless ($map) {
		1502	($map, $x, $y) = @$EMERGENCY_POSITION;
		1503	$map = cf::map::find_map $map
		1504	or die "FATAL: cannot load emergency map\n";
		1505	}
		1506	}
		1507
		1508	($x, $y) = (-1, -1)
		1509	unless (defined $x) && (defined $y);
		1510
		1511	# use -1 or undef as default coordinates, not 0, 0
		1512	($x, $y) = ($map->enter_x, $map->enter_y)
		1513	if $x <=0 && $y <= 0;
		1514
		1515	$map->load;
		1516
		1517	$self->activate_recursive;
		1518	$self->enter_map ($map, $x, $y);
		1519	}
		1520
		1521	cf::player->attach (
		1522	on_logout => sub {
		1523	my ($pl) = @_;
		1524
		1525	# abort map switching before logout
		1526	if ($pl->ob->{_link_pos}) {
		1527	cf::sync_job {
		1528	$pl->ob->leave_link
		1529	};
		1530	}
		1531	},
		1532	on_login => sub {
		1533	my ($pl) = @_;
		1534
		1535	# try to abort aborted map switching on player login :)
		1536	# should happen only on crashes
		1537	if ($pl->ob->{_link_pos}) {
		1538	$pl->ob->enter_link;
		1539	Coro::async {
		1540	# we need this sleep as the login has a concurrent enter_exit running
		1541	# and this sleep increases chances of the player not ending up in scorn
		1542	Coro::Timer::sleep 1;
		1543	$pl->ob->leave_link;
		1544	};
		1545	}
		1546	},
		1547	);
		1548
		1549	=item $player_object->goto_map ($path, $x, $y)
		1550
		1551	=cut
		1552
		1553	sub cf::object::player::goto_map {
		1554	my ($self, $path, $x, $y) = @_;
		1555
		1556	$self->enter_link;
		1557
		1558	(Coro::async {
		1559	$path = new cf::path $path;
		1560
		1561	my $map = cf::map::find_map $path->as_string;
		1562	$map = $map->customise_for ($self) if $map;
		1563
		1564	# warn "entering ", $map->path, " at ($x, $y)\n"
		1565	# if $map;
		1566
		1567	$map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1568
		1569	$self->leave_link ($map, $x, $y);
		1570	})->prio (1);
		1571	}
		1572
		1573	=item $player_object->enter_exit ($exit_object)
		1574
		1575	=cut
		1576
		1577	sub parse_random_map_params {
		1578	my ($spec) = @_;
		1579
		1580	my $rmp = { # defaults
		1581	xsize => 10,
		1582	ysize => 10,
		1583	};
		1584
		1585	for (split /\n/, $spec) {
		1586	my ($k, $v) = split /\s+/, $_, 2;
		1587
		1588	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1589	}
		1590
		1591	$rmp
		1592	}
		1593
		1594	sub prepare_random_map {
		1595	my ($exit) = @_;
		1596
		1597	# all this does is basically replace the /! path by
		1598	# a new random map path (?random/...) with a seed
		1599	# that depends on the exit object
		1600
		1601	my $rmp = parse_random_map_params $exit->msg;
		1602
		1603	if ($exit->map) {
		1604	$rmp->{region} = $exit->map->region_name;
		1605	$rmp->{origin_map} = $exit->map->path;
		1606	$rmp->{origin_x} = $exit->x;
		1607	$rmp->{origin_y} = $exit->y;
		1608	}
		1609
		1610	$rmp->{random_seed} ||= $exit->random_seed;
		1611
		1612	my $data = cf::to_json $rmp;
		1613	my $md5 = Digest::MD5::md5_hex $data;
		1614
		1615	if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) {
		1616	aio_write $fh, 0, (length $data), $data, 0;
		1617
		1618	$exit->slaying ("?random/$md5");
		1619	$exit->msg (undef);
		1620	}
		1621	}
		1622
		1623	sub cf::object::player::enter_exit {
797	my ($self, $id, %msg) = @_;	1624	my ($self, $exit) = @_;
798		1625
799	$msg{msgid} = $id;	1626	return unless $self->type == cf::PLAYER;
800		1627
801	$self->send ("ext " . to_json \%msg);	1628	$self->enter_link;
		1629
		1630	(Coro::async {
		1631	unless (eval {
		1632
		1633	prepare_random_map $exit
		1634	if $exit->slaying eq "/!";
		1635
		1636	my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
		1637	$self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
		1638
		1639	1;
		1640	}) {
		1641	$self->message ("Something went wrong deep within the crossfire server. "
		1642	. "I'll try to bring you back to the map you were before. "
		1643	. "Please report this to the dungeon master",
		1644	cf::NDI_UNIQUE | cf::NDI_RED);
		1645
		1646	warn "ERROR in enter_exit: $@";
		1647	$self->leave_link;
		1648	}
		1649	})->prio (1);
802	}	1650	}
		1651
		1652	=head3 cf::client
		1653
		1654	=over 4
		1655
		1656	=item $client->send_drawinfo ($text, $flags)
		1657
		1658	Sends a drawinfo packet to the client. Circumvents output buffering so
		1659	should not be used under normal circumstances.
		1660
		1661	=cut
		1662
		1663	sub cf::client::send_drawinfo {
		1664	my ($self, $text, $flags) = @_;
		1665
		1666	utf8::encode $text;
		1667	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1668	}
		1669
		1670
		1671	=item $success = $client->query ($flags, "text", \&cb)
		1672
		1673	Queues a query to the client, calling the given callback with
		1674	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1675	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1676
		1677	Queries can fail, so check the return code. Or don't, as queries will become
		1678	reliable at some point in the future.
		1679
		1680	=cut
		1681
		1682	sub cf::client::query {
		1683	my ($self, $flags, $text, $cb) = @_;
		1684
		1685	return unless $self->state == ST_PLAYING
		1686	|| $self->state == ST_SETUP
		1687	|| $self->state == ST_CUSTOM;
		1688
		1689	$self->state (ST_CUSTOM);
		1690
		1691	utf8::encode $text;
		1692	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1693
		1694	$self->send_packet ($self->{query_queue}[0][0])
		1695	if @{ $self->{query_queue} } == 1;
		1696	}
		1697
		1698	cf::client->attach (
		1699	on_reply => sub {
		1700	my ($ns, $msg) = @_;
		1701
		1702	# this weird shuffling is so that direct followup queries
		1703	# get handled first
		1704	my $queue = delete $ns->{query_queue};
		1705
		1706	(shift @$queue)->[1]->($msg);
		1707
		1708	push @{ $ns->{query_queue} }, @$queue;
		1709
		1710	if (@{ $ns->{query_queue} } == @$queue) {
		1711	if (@$queue) {
		1712	$ns->send_packet ($ns->{query_queue}[0][0]);
		1713	} else {
		1714	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1715	}
		1716	}
		1717	},
		1718	);
		1719
		1720	=item $client->coro (\&cb)
		1721
		1722	Create a new coroutine, running the specified callback. The coroutine will
		1723	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1724	or loss of connection).
		1725
		1726	=cut
		1727
		1728	sub cf::client::coro {
		1729	my ($self, $cb) = @_;
		1730
		1731	my $coro; $coro = async {
		1732	eval {
		1733	$cb->();
		1734	};
		1735	warn $@ if $@;
		1736	};
		1737
		1738	$coro->on_destroy (sub {
		1739	delete $self->{_coro}{$coro+0};
		1740	});
		1741
		1742	$self->{_coro}{$coro+0} = $coro;
		1743
		1744	$coro
		1745	}
		1746
		1747	cf::client->attach (
		1748	on_destroy => sub {
		1749	my ($ns) = @_;
		1750
		1751	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1752	},
		1753	);
803		1754
804	=back	1755	=back
805		1756
806	=cut
807
808	#############################################################################
809		1757
810	=head2 SAFE SCRIPTING	1758	=head2 SAFE SCRIPTING
811		1759
812	Functions that provide a safe environment to compile and execute	1760	Functions that provide a safe environment to compile and execute
813	snippets of perl code without them endangering the safety of the server	1761	snippets of perl code without them endangering the safety of the server
814	itself. Looping constructs, I/O operators and other built-in functionality	1762	itself. Looping constructs, I/O operators and other built-in functionality
815	is not available in the safe scripting environment, and the number of	1763	is not available in the safe scripting environment, and the number of
816	functions and methods that cna be called is greatly reduced.	1764	functions and methods that can be called is greatly reduced.
817		1765
818	=cut	1766	=cut
819		1767
820	our $safe = new Safe "safe";	1768	our $safe = new Safe "safe";
821	our $safe_hole = new Safe::Hole;	1769	our $safe_hole = new Safe::Hole;
…		…
828		1776
829	=pod	1777	=pod
830		1778
831	The following fucntions and emthods are available within a safe environment:	1779	The following fucntions and emthods are available within a safe environment:
832		1780
833	cf::object contr pay_amount pay_player	1781	cf::object contr pay_amount pay_player map
834	cf::object::player player	1782	cf::object::player player
835	cf::player peaceful	1783	cf::player peaceful
		1784	cf::map trigger
836		1785
837	=cut	1786	=cut
838		1787
839	for (	1788	for (
840	["cf::object" => qw(contr pay_amount pay_player)],	1789	["cf::object" => qw(contr pay_amount pay_player map)],
841	["cf::object::player" => qw(player)],	1790	["cf::object::player" => qw(player)],
842	["cf::player" => qw(peaceful)],	1791	["cf::player" => qw(peaceful)],
		1792	["cf::map" => qw(trigger)],
843	) {	1793	) {
844	no strict 'refs';	1794	no strict 'refs';
845	my ($pkg, @funs) = @$_;	1795	my ($pkg, @funs) = @$_;
846	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	1796	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
847	for @funs;	1797	for @funs;
…		…
912	*{"safe::$fun"} = $safe_hole->wrap ($cb);	1862	*{"safe::$fun"} = $safe_hole->wrap ($cb);
913	}	1863	}
914		1864
915	=back	1865	=back
916		1866
		1867	=cut
		1868
917	#############################################################################	1869	#############################################################################
918		1870
919	=head2 EXTENSION DATABASE SUPPORT	1871	=head2 EXTENSION DATABASE SUPPORT
920		1872
921	Crossfire maintains a very simple database for extension use. It can	1873	Crossfire maintains a very simple database for extension use. It can
…		…
955		1907
956	Immediately write the database to disk I<if it is dirty>.	1908	Immediately write the database to disk I<if it is dirty>.
957		1909
958	=cut	1910	=cut
959		1911
		1912	our $DB;
		1913
960	{	1914	{
961	my $db;
962	my $path = cf::localdir . "/database.pst";	1915	my $path = cf::localdir . "/database.pst";
963		1916
964	sub db_load() {	1917	sub db_load() {
965	warn "loading database $path\n";#d# remove later
966	$db = stat $path ? Storable::retrieve $path : { };	1918	$DB = stat $path ? Storable::retrieve $path : { };
967	}	1919	}
968		1920
969	my $pid;	1921	my $pid;
970		1922
971	sub db_save() {	1923	sub db_save() {
972	warn "saving database $path\n";#d# remove later
973	waitpid $pid, 0 if $pid;	1924	waitpid $pid, 0 if $pid;
974	if (0 == ($pid = fork)) {	1925	if (0 == ($pid = fork)) {
975	$db->{_meta}{version} = 1;	1926	$DB->{_meta}{version} = 1;
976	Storable::nstore $db, "$path~";	1927	Storable::nstore $DB, "$path~";
977	rename "$path~", $path;	1928	rename "$path~", $path;
978	cf::_exit 0 if defined $pid;	1929	cf::_exit 0 if defined $pid;
979	}	1930	}
980	}	1931	}
981		1932
…		…
984	sub db_sync() {	1935	sub db_sync() {
985	db_save if $dirty;	1936	db_save if $dirty;
986	undef $dirty;	1937	undef $dirty;
987	}	1938	}
988		1939
989	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	1940	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
990	db_sync;	1941	db_sync;
991	});	1942	});
992		1943
993	sub db_dirty() {	1944	sub db_dirty() {
994	$dirty = 1;	1945	$dirty = 1;
995	$idle->start;	1946	$idle->start;
996	}	1947	}
997		1948
998	sub db_get($;$) {	1949	sub db_get($;$) {
999	@_ >= 2	1950	@_ >= 2
1000	? $db->{$_[0]}{$_[1]}	1951	? $DB->{$_[0]}{$_[1]}
1001	: ($db->{$_[0]} ||= { })	1952	: ($DB->{$_[0]} ||= { })
1002	}	1953	}
1003		1954
1004	sub db_put($$;$) {	1955	sub db_put($$;$) {
1005	if (@_ >= 3) {	1956	if (@_ >= 3) {
1006	$db->{$_[0]}{$_[1]} = $_[2];	1957	$DB->{$_[0]}{$_[1]} = $_[2];
1007	} else {	1958	} else {
1008	$db->{$_[0]} = $_[1];	1959	$DB->{$_[0]} = $_[1];
1009	}	1960	}
1010	db_dirty;	1961	db_dirty;
1011	}	1962	}
1012		1963
1013	attach_global	1964	cf::global->attach (
1014	prio => 10000,	1965	prio => 10000,
1015	on_cleanup => sub {	1966	on_cleanup => sub {
1016	db_sync;	1967	db_sync;
1017	},	1968	},
1018	;	1969	);
1019	}	1970	}
1020		1971
1021	#############################################################################	1972	#############################################################################
1022	# the server's main()	1973	# the server's main()
1023		1974
		1975	sub cfg_load {
		1976	open my $fh, "<:utf8", cf::confdir . "/config"
		1977	or return;
		1978
		1979	local $/;
		1980	*CFG = YAML::Syck::Load <$fh>;
		1981	}
		1982
1024	sub main {	1983	sub main {
		1984	# we must not ever block the main coroutine
		1985	local $Coro::idle = sub {
		1986	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		1987	(Coro::unblock_sub {
		1988	Event::one_event;
		1989	})->();
		1990	};
		1991
		1992	cfg_load;
1025	db_load;	1993	db_load;
1026	load_extensions;	1994	load_extensions;
1027	Event::loop;	1995	Event::loop;
1028	}	1996	}
1029		1997
1030	#############################################################################	1998	#############################################################################
1031	# initialisation	1999	# initialisation
1032		2000
1033	sub _perl_reload(&) {	2001	sub reload() {
1034	my ($msg) = @_;	2002	# can/must only be called in main
		2003	if ($Coro::current != $Coro::main) {
		2004	warn "can only reload from main coroutine\n";
		2005	return;
		2006	}
1035		2007
1036	$msg->("reloading...");	2008	warn "reloading...";
		2009
		2010	local $FREEZE = 1;
		2011	cf::emergency_save;
1037		2012
1038	eval {	2013	eval {
		2014	# if anything goes wrong in here, we should simply crash as we already saved
		2015
1039	# cancel all watchers	2016	# cancel all watchers
1040	$_->cancel for Event::all_watchers;	2017	for (Event::all_watchers) {
		2018	$_->cancel if $_->data & WF_AUTOCANCEL;
		2019	}
		2020
		2021	# cancel all extension coros
		2022	$_->cancel for values %EXT_CORO;
		2023	%EXT_CORO = ();
1041		2024
1042	# unload all extensions	2025	# unload all extensions
1043	for (@exts) {	2026	for (@exts) {
1044	$msg->("unloading <$_>");	2027	warn "unloading <$_>";
1045	unload_extension $_;	2028	unload_extension $_;
1046	}	2029	}
1047		2030
1048	# unload all modules loaded from $LIBDIR	2031	# unload all modules loaded from $LIBDIR
1049	while (my ($k, $v) = each %INC) {	2032	while (my ($k, $v) = each %INC) {
1050	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2033	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1051		2034
1052	$msg->("removing <$k>");	2035	warn "removing <$k>";
1053	delete $INC{$k};	2036	delete $INC{$k};
1054		2037
1055	$k =~ s/\.pm$//;	2038	$k =~ s/\.pm$//;
1056	$k =~ s/\//::/g;	2039	$k =~ s/\//::/g;
1057		2040
…		…
1062	Symbol::delete_package $k;	2045	Symbol::delete_package $k;
1063	}	2046	}
1064		2047
1065	# sync database to disk	2048	# sync database to disk
1066	cf::db_sync;	2049	cf::db_sync;
		2050	IO::AIO::flush;
1067		2051
1068	# get rid of safe::, as good as possible	2052	# get rid of safe::, as good as possible
1069	Symbol::delete_package "safe::$_"	2053	Symbol::delete_package "safe::$_"
1070	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2054	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1071		2055
1072	# remove register_script_function callbacks	2056	# remove register_script_function callbacks
1073	# TODO	2057	# TODO
1074		2058
1075	# unload cf.pm "a bit"	2059	# unload cf.pm "a bit"
…		…
1078	# don't, removes xs symbols, too,	2062	# don't, removes xs symbols, too,
1079	# and global variables created in xs	2063	# and global variables created in xs
1080	#Symbol::delete_package __PACKAGE__;	2064	#Symbol::delete_package __PACKAGE__;
1081		2065
1082	# reload cf.pm	2066	# reload cf.pm
1083	$msg->("reloading cf.pm");	2067	warn "reloading cf.pm";
1084	require cf;	2068	require cf;
		2069	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1085		2070
1086	# load database again	2071	# load config and database again
		2072	cf::cfg_load;
1087	cf::db_load;	2073	cf::db_load;
1088		2074
1089	# load extensions	2075	# load extensions
1090	$msg->("load extensions");	2076	warn "load extensions";
1091	cf::load_extensions;	2077	cf::load_extensions;
1092		2078
1093	# reattach attachments to objects	2079	# reattach attachments to objects
1094	$msg->("reattach");	2080	warn "reattach";
1095	_global_reattach;	2081	_global_reattach;
1096	};	2082	};
1097	$msg->($@) if $@;
1098		2083
1099	$msg->("reloaded");	2084	if ($@) {
		2085	warn $@;
		2086	warn "error while reloading, exiting.";
		2087	exit 1;
		2088	}
		2089
		2090	warn "reloaded successfully";
1100	};	2091	};
1101		2092
1102	sub perl_reload() {	2093	#############################################################################
1103	_perl_reload {
1104	warn $_[0];
1105	print "$_[0]\n";
1106	};
1107	}
1108		2094
		2095	unless ($LINK_MAP) {
		2096	$LINK_MAP = cf::map::new;
		2097
		2098	$LINK_MAP->width (41);
		2099	$LINK_MAP->height (41);
		2100	$LINK_MAP->alloc;
		2101	$LINK_MAP->path ("{link}");
		2102	$LINK_MAP->{path} = bless { path => "{link}" }, "cf::path";
		2103	$LINK_MAP->in_memory (MAP_IN_MEMORY);
		2104
		2105	# dirty hack because... archetypes are not yet loaded
		2106	Event->timer (
		2107	after => 2,
		2108	cb => sub {
		2109	$_[0]->w->cancel;
		2110
		2111	# provide some exits "home"
		2112	my $exit = cf::object::new "exit";
		2113
		2114	$exit->slaying ($EMERGENCY_POSITION->[0]);
		2115	$exit->stats->hp ($EMERGENCY_POSITION->[1]);
		2116	$exit->stats->sp ($EMERGENCY_POSITION->[2]);
		2117
		2118	$LINK_MAP->insert ($exit->clone, 19, 19);
		2119	$LINK_MAP->insert ($exit->clone, 19, 20);
		2120	$LINK_MAP->insert ($exit->clone, 19, 21);
		2121	$LINK_MAP->insert ($exit->clone, 20, 19);
		2122	$LINK_MAP->insert ($exit->clone, 20, 21);
		2123	$LINK_MAP->insert ($exit->clone, 21, 19);
		2124	$LINK_MAP->insert ($exit->clone, 21, 20);
		2125	$LINK_MAP->insert ($exit->clone, 21, 21);
		2126
		2127	$exit->destroy;
		2128	});
		2129
		2130	$LINK_MAP->{deny_save} = 1;
		2131	$LINK_MAP->{deny_reset} = 1;
		2132
		2133	$cf::MAP{$LINK_MAP->path} = $LINK_MAP;
		2134	}
		2135
		2136	register "<global>", __PACKAGE__;
		2137
1109	register_command "perl-reload", 0, sub {	2138	register_command "reload" => sub {
1110	my ($who, $arg) = @_;	2139	my ($who, $arg) = @_;
1111		2140
1112	if ($who->flag (FLAG_WIZ)) {	2141	if ($who->flag (FLAG_WIZ)) {
1113	_perl_reload {	2142	$who->message ("start of reload.");
1114	warn $_[0];	2143	reload;
1115	$who->message ($_[0]);	2144	$who->message ("end of reload.");
1116	};
1117	}	2145	}
1118	};	2146	};
1119		2147
1120	register "<global>", __PACKAGE__;
1121
1122	unshift @INC, $LIBDIR;	2148	unshift @INC, $LIBDIR;
1123		2149
1124	$TICK_WATCHER = Event->timer (	2150	$TICK_WATCHER = Event->timer (
		2151	reentrant => 0,
1125	prio => 1,	2152	prio => 0,
1126	at => $NEXT_TICK || 1,	2153	at => $NEXT_TICK || $TICK,
		2154	data => WF_AUTOCANCEL,
1127	cb => sub {	2155	cb => sub {
		2156	unless ($FREEZE) {
1128	cf::server_tick; # one server iteration	2157	cf::server_tick; # one server iteration
		2158	$RUNTIME += $TICK;
		2159	}
1129		2160
1130	my $NOW = Event::time;
1131	$NEXT_TICK += $TICK;	2161	$NEXT_TICK += $TICK;
1132		2162
1133	# if we are delayed by four ticks, skip them all	2163	# if we are delayed by four ticks or more, skip them all
1134	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2164	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1135		2165
1136	$TICK_WATCHER->at ($NEXT_TICK);	2166	$TICK_WATCHER->at ($NEXT_TICK);
1137	$TICK_WATCHER->start;	2167	$TICK_WATCHER->start;
1138	},	2168	},
1139	);	2169	);
1140		2170
		2171	IO::AIO::max_poll_time $TICK * 0.2;
		2172
		2173	Event->io (
		2174	fd => IO::AIO::poll_fileno,
		2175	poll => 'r',
		2176	prio => 5,
		2177	data => WF_AUTOCANCEL,
		2178	cb => \&IO::AIO::poll_cb,
		2179	);
		2180
		2181	Event->timer (
		2182	data => WF_AUTOCANCEL,
		2183	after => 0,
		2184	interval => 10,
		2185	cb => sub {
		2186	(Coro::unblock_sub {
		2187	write_runtime
		2188	or warn "ERROR: unable to write runtime file: $!";
		2189	})->();
		2190	},
		2191	);
		2192
1141	1	2193	1
1142		2194

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