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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 1.187 by root, Sat Jan 20 21:06:52 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 3.4 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	_init_vars;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
17		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
18	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
19	our @EVENT;	44	our @EVENT;
20	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
21		46
22	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
23	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
24	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
25		53
26	our %CFG;	54	our %CFG;
27		55
		56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
		87
28	#############################################################################	88	#############################################################################
29		89
30	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
31		91
32	=over 4	92	=over 4
		93
		94	=item $cf::UPTIME
		95
		96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
33		102
34	=item $cf::LIBDIR	103	=item $cf::LIBDIR
35		104
36	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
37	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
38		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
39	=item $cf::TICK	112	=item $cf::TICK
40		113
41	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
42		115
43	=item %cf::CFG	116	=item %cf::CFG
44		117
45	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
46	from wherever your confdir points to.	119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
47		127
48	=back	128	=back
49		129
50	=cut	130	=cut
51		131
52	BEGIN {	132	BEGIN {
53	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
54	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
55	$msg .= "\n"	137	$msg .= "\n"
56	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
57		139
58	print STDERR "cfperl: $msg";
59	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
60	};	141	};
61	}	142	}
62		143
		144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
63	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
64		150
65	# we bless all objects into (empty) derived classes to force a method lookup	151	# we bless all objects into (empty) derived classes to force a method lookup
66	# within the Safe compartment.	152	# 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)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
68	no strict 'refs';	160	no strict 'refs';
69	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
70	}	162	}
71		163
72	$Event::DIED = sub {	164	$Event::DIED = sub {
73	warn "error in event callback: @_";	165	warn "error in event callback: @_";
74	};	166	};
75		167
76	my %ext_pkg;
77	my @exts;
78	my @hook;
79	my %command;
80	my %extcmd;
81
82	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
83		169
84	=over 4	170	=over 4
85		171
		172	=item dumpval $ref
		173
86	=cut	174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
87		194
88	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
89		196
90	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
91		198
…		…
107	sub to_json($) {	214	sub to_json($) {
108	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
109	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
110	}	217	}
111		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 90 + 10;
		355	# 10 is the runtime save interval, for a monotonic clock
		356	# 60 allows for the watchdog to kill the server.
		357
		358	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		359	and return;
		360
		361	aio_fsync $fh
		362	and return;
		363
		364	close $fh
		365	or return;
		366
		367	aio_rename "$runtime~", $runtime
		368	and return;
		369
		370	1
		371	}
		372
112	=back	373	=back
113		374
		375	=cut
		376
114	#############################################################################	377	#############################################################################
115		378
116	=head2 EVENTS AND OBJECT ATTACHMENTS	379	=head2 ATTACHABLE OBJECTS
		380
		381	Many objects in crossfire are so-called attachable objects. That means you can
		382	attach callbacks/event handlers (a collection of which is called an "attachment")
		383	to it. All such attachable objects support the following methods.
		384
		385	In the following description, CLASS can be any of C<global>, C<object>
		386	C<player>, C<client> or C<map> (i.e. the attachable objects in
		387	crossfire+).
117		388
118	=over 4	389	=over 4
119		390
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...)	391	=item $attachable->attach ($attachment, key => $value...)
133		392
134	=item $map->detach ($attachment)	393	=item $attachable->detach ($attachment)
135		394
136	Attach/detach a pre-registered attachment to a map.	395	Attach/detach a pre-registered attachment to a specific object and give it
		396	the specified key/value pairs as arguments.
137		397
138	=item $bool = $object->attached ($name)	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
139		400
140	=item $bool = $player->attached ($name)	401	$obj->attach (minesweeper => width => 10, height => 10);
141		402
142	=item $bool = $map->attached ($name)	403	=item $bool = $attachable->attached ($name)
143		404
144	Checks wether the named attachment is currently attached to the object.	405	Checks wether the named attachment is currently attached to the object.
145		406
146	=item cf::attach_global ...	407	=item cf::CLASS->attach ...
147		408
148	Attach handlers for global events.	409	=item cf::CLASS->detach ...
149		410
150	This and all following C<attach_*>-functions expect any number of the	411	Define an anonymous attachment and attach it to all objects of the given
151	following handler/hook descriptions:	412	CLASS. See the next function for an explanation of its arguments.
		413
		414	You can attach to global events by using the C<cf::global> class.
		415
		416	Example, log all player logins:
		417
		418	cf::player->attach (
		419	on_login => sub {
		420	my ($pl) = @_;
		421	...
		422	},
		423	);
		424
		425	Example, attach to the jeweler skill:
		426
		427	cf::object->attach (
		428	type => cf::SKILL,
		429	subtype => cf::SK_JEWELER,
		430	on_use_skill => sub {
		431	my ($sk, $ob, $part, $dir, $msg) = @_;
		432	...
		433	},
		434	);
		435
		436	=item cf::CLASS::attachment $name, ...
		437
		438	Register an attachment by C<$name> through which attachable objects of the
		439	given CLASS can refer to this attachment.
		440
		441	Some classes such as crossfire maps and objects can specify attachments
		442	that are attached at load/instantiate time, thus the need for a name.
		443
		444	These calls expect any number of the following handler/hook descriptions:
152		445
153	=over 4	446	=over 4
154		447
155	=item prio => $number	448	=item prio => $number
156		449
…		…
158	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
159	earlier. The default priority is C<0>, and many built-in handlers are	452	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	453	registered at priority C<-1000>, so lower priorities should not be used
161	unless you know what you are doing.	454	unless you know what you are doing.
162		455
		456	=item type => $type
		457
		458	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		459	given type of objects only (the additional parameter C<subtype> can be
		460	used to further limit to the given subtype).
		461
163	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
164		463
165	Call the given code reference whenever the named event happens (event is	464	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	465	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	466	handlers are recognised generally depends on the type of object these
…		…
176	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
177	object/class are recognised.	476	object/class are recognised.
178		477
179	=back	478	=back
180		479
181	=item cf::attach_to_type $object_type, $subtype, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
182		482
183	Attach handlers for a specific object type (e.g. TRANSPORT) and	483	cf::object::attachment sockpuppet =>
184	subtype. If C<$subtype> is zero or undef, matches all objects of the given	484	on_skill_attack => sub {
185	type.	485	my ($self, $victim) = @_;
186		486	...
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	}	487	}
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	488	}
408	}
409		489
410	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	490	=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		491
434	Just because you have a perl object does not mean that the corresponding	492	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	493	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	494	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	495	can be used to test for existence of the C object part without causing an
438	exception.	496	exception.
439		497
		498	=cut
		499
		500	# the following variables are defined in .xs and must not be re-created
		501	our @CB_GLOBAL = (); # registry for all global events
		502	our @CB_ATTACHABLE = (); # registry for all attachables
		503	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		504	our @CB_PLAYER = ();
		505	our @CB_CLIENT = ();
		506	our @CB_TYPE = (); # registry for type (cf-object class) based events
		507	our @CB_MAP = ();
		508
		509	my %attachment;
		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
		517	sub _attach_cb($$$$) {
		518	my ($registry, $event, $prio, $cb) = @_;
		519
		520	use sort 'stable';
		521
		522	$cb = [$prio, $cb];
		523
		524	@{$registry->[$event]} = sort
		525	{ $a->[0] cmp $b->[0] }
		526	@{$registry->[$event] || []}, $cb;
		527	}
		528
		529	# hack
		530	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		531
		532	# attach handles attaching event callbacks
		533	# the only thing the caller has to do is pass the correct
		534	# registry (== where the callback attaches to).
		535	sub _attach {
		536	my ($registry, $klass, @arg) = @_;
		537
		538	my $object_type;
		539	my $prio = 0;
		540	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		541
		542	#TODO: get rid of this hack
		543	if ($attachable_klass{$klass}) {
		544	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		545	}
		546
		547	while (@arg) {
		548	my $type = shift @arg;
		549
		550	if ($type eq "prio") {
		551	$prio = shift @arg;
		552
		553	} elsif ($type eq "type") {
		554	$object_type = shift @arg;
		555	$registry = $CB_TYPE[$object_type] ||= [];
		556
		557	} elsif ($type eq "subtype") {
		558	defined $object_type or Carp::croak "subtype specified without type";
		559	my $object_subtype = shift @arg;
		560	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		561
		562	} elsif ($type eq "package") {
		563	my $pkg = shift @arg;
		564
		565	while (my ($name, $id) = each %cb_id) {
		566	if (my $cb = $pkg->can ($name)) {
		567	_attach_cb $registry, $id, $prio, $cb;
		568	}
		569	}
		570
		571	} elsif (exists $cb_id{$type}) {
		572	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		573
		574	} elsif (ref $type) {
		575	warn "attaching objects not supported, ignoring.\n";
		576
		577	} else {
		578	shift @arg;
		579	warn "attach argument '$type' not supported, ignoring.\n";
		580	}
		581	}
		582	}
		583
		584	sub _object_attach {
		585	my ($obj, $name, %arg) = @_;
		586
		587	return if exists $obj->{_attachment}{$name};
		588
		589	if (my $attach = $attachment{$name}) {
		590	my $registry = $obj->registry;
		591
		592	for (@$attach) {
		593	my ($klass, @attach) = @$_;
		594	_attach $registry, $klass, @attach;
		595	}
		596
		597	$obj->{$name} = \%arg;
		598	} else {
		599	warn "object uses attachment '$name' that is not available, postponing.\n";
		600	}
		601
		602	$obj->{_attachment}{$name} = undef;
		603	}
		604
		605	sub cf::attachable::attach {
		606	if (ref $_[0]) {
		607	_object_attach @_;
		608	} else {
		609	_attach shift->_attach_registry, @_;
		610	}
		611	};
		612
		613	# all those should be optimised
		614	sub cf::attachable::detach {
		615	my ($obj, $name) = @_;
		616
		617	if (ref $obj) {
		618	delete $obj->{_attachment}{$name};
		619	reattach ($obj);
		620	} else {
		621	Carp::croak "cannot, currently, detach class attachments";
		622	}
		623	};
		624
		625	sub cf::attachable::attached {
		626	my ($obj, $name) = @_;
		627
		628	exists $obj->{_attachment}{$name}
		629	}
		630
		631	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		632	eval "#line " . __LINE__ . " 'cf.pm'
		633	sub cf::\L$klass\E::_attach_registry {
		634	(\\\@CB_$klass, KLASS_$klass)
		635	}
		636
		637	sub cf::\L$klass\E::attachment {
		638	my \$name = shift;
		639
		640	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		641	}
		642	";
		643	die if $@;
		644	}
		645
		646	our $override;
		647	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		648
		649	sub override {
		650	$override = 1;
		651	@invoke_results = ();
		652	}
		653
		654	sub do_invoke {
		655	my $event = shift;
		656	my $callbacks = shift;
		657
		658	@invoke_results = ();
		659
		660	local $override;
		661
		662	for (@$callbacks) {
		663	eval { &{$_->[1]} };
		664
		665	if ($@) {
		666	warn "$@";
		667	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		668	override;
		669	}
		670
		671	return 1 if $override;
		672	}
		673
		674	0
		675	}
		676
		677	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		678
		679	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		680
		681	Generate an object-specific event with the given arguments.
		682
		683	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		684	removed in future versions), and there is no public API to access override
		685	results (if you must, access C<@cf::invoke_results> directly).
		686
440	=back	687	=back
441		688
442	=cut	689	=cut
443
444	*cf::object::valid =
445	*cf::player::valid =
446	*cf::map::valid = \&cf::_valid;
447		690
448	#############################################################################	691	#############################################################################
449	# object support	692	# object support
450		693
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 {	694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
465	my ($obj) = @_;	696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
466	my $registry = $obj->registry;	700	my $registry = $obj->registry;
467		701
468	@$registry = ();	702	@$registry = ();
469		703
470	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
471		705
472	for my $name (keys %{ $obj->{_attachment} || {} }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
473	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
474	for (@$attach) {	708	for (@$attach) {
475	my ($klass, @attach) = @$_;	709	my ($klass, @attach) = @$_;
476	_attach @$registry, $klass, @attach;	710	_attach $registry, $klass, @attach;
477	}	711	}
478	} else {	712	} else {
479	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
480	}	714	}
481	}	715	}
482	}	716	}
483		717
484	sub object_freezer_save {	718	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, $av);
529	}
530
531	()
532	}
533
534	attach_to_objects
535	prio => -1000000,	719	prio => -1000000,
		720	on_instantiate => sub {
		721	my ($obj, $data) = @_;
		722
		723	$data = from_json $data;
		724
		725	for (@$data) {
		726	my ($name, $args) = @$_;
		727
		728	$obj->attach ($name, %{$args || {} });
		729	}
		730	},
		731	on_reattach => \&reattach,
536	on_clone => sub {	732	on_clone => sub {
537	my ($src, $dst) = @_;	733	my ($src, $dst) = @_;
538		734
539	@{$dst->registry} = @{$src->registry};	735	@{$dst->registry} = @{$src->registry};
540		736
541	%$dst = %$src;	737	%$dst = %$src;
542		738
543	%{$dst->{_attachment}} = %{$src->{_attachment}}	739	%{$dst->{_attachment}} = %{$src->{_attachment}}
544	if exists $src->{_attachment};	740	if exists $src->{_attachment};
545	},	741	},
546	;	742	);
		743
		744	sub object_freezer_save {
		745	my ($filename, $rdata, $objs) = @_;
		746
		747	sync_job {
		748	if (length $$rdata) {
		749	warn sprintf "saving %s (%d,%d)\n",
		750	$filename, length $$rdata, scalar @$objs;
		751
		752	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		753	chmod SAVE_MODE, $fh;
		754	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		755	aio_fsync $fh;
		756	close $fh;
		757
		758	if (@$objs) {
		759	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		760	chmod SAVE_MODE, $fh;
		761	my $data = Storable::nfreeze { version => 1, objs => $objs };
		762	aio_write $fh, 0, (length $data), $data, 0;
		763	aio_fsync $fh;
		764	close $fh;
		765	aio_rename "$filename.pst~", "$filename.pst";
		766	}
		767	} else {
		768	aio_unlink "$filename.pst";
		769	}
		770
		771	aio_rename "$filename~", $filename;
		772	} else {
		773	warn "FATAL: $filename~: $!\n";
		774	}
		775	} else {
		776	aio_unlink $filename;
		777	aio_unlink "$filename.pst";
		778	}
		779	}
		780	}
		781
		782	sub object_freezer_as_string {
		783	my ($rdata, $objs) = @_;
		784
		785	use Data::Dumper;
		786
		787	$$rdata . Dumper $objs
		788	}
		789
		790	sub object_thawer_load {
		791	my ($filename) = @_;
		792
		793	my ($data, $av);
		794
		795	(aio_load $filename, $data) >= 0
		796	or return;
		797
		798	unless (aio_stat "$filename.pst") {
		799	(aio_load "$filename.pst", $av) >= 0
		800	or return;
		801	$av = eval { (Storable::thaw $av)->{objs} };
		802	}
		803
		804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
		806	return ($data, $av);
		807	}
547		808
548	#############################################################################	809	#############################################################################
549	# old plug-in events	810	# command handling &c
550		811
551	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
552	my $extension = shift;
553	my $event_code = shift;
554		813
555	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
556	or return;	815	$name.
557		816
558	&$cb	817	=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		818
580	sub register_command {	819	sub register_command {
581	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
582		821
583	my $caller = caller;	822	my $caller = caller;
584	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
585		824
586	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
587	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
588	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
589		836
590	sub register_extcmd {	837	sub register_extcmd {
591	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
592		839
593	my $caller = caller;	840	$EXTCMD{$name} = $cb;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$extcmd{$name} = [$cb, $caller];
597	}	841	}
598		842
599	sub register {	843	cf::player->attach (
600	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
601		846
602	#TODO	847	my $cb = $COMMAND{$name}
603	}	848	or return;
		849
		850	for my $cmd (@$cb) {
		851	$cmd->[1]->($pl->ob, $params);
		852	}
		853
		854	cf::override;
		855	},
		856	on_extcmd => sub {
		857	my ($pl, $buf) = @_;
		858
		859	my $msg = eval { from_json $buf };
		860
		861	if (ref $msg) {
		862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		863	if (my %reply = $cb->($pl, $msg)) {
		864	$pl->ext_reply ($msg->{msgid}, %reply);
		865	}
		866	}
		867	} else {
		868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		869	}
		870
		871	cf::override;
		872	},
		873	);
604		874
605	sub load_extension {	875	sub load_extension {
606	my ($path) = @_;	876	my ($path) = @_;
607		877
608	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
609	my $base = $1;	879	my $base = $1;
610	my $pkg = $1;	880	my $pkg = $1;
611	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
612	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
613		883
614	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
615		885
616	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
617	or die "$path: $!";	887	or die "$path: $!";
618		888
619	my $source =	889	my $source =
620	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
621	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
622	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
623	. "\n};\n1";	893	. "\n};\n1";
624		894
625	eval $source	895	unless (eval $source) {
626	or die "$path: $@";	896	my $msg = $@ ? "$path: $@\n"
627		897	: "extension disabled.\n";
628	push @exts, $pkg;	898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
629	$ext_pkg{$base} = $pkg;	899	warn $@;
630		900	warn "mandatory extension failed to load, exiting.\n";
631	# no strict 'refs';	901	exit 1;
632	# @{"$pkg\::ISA"} = ext::;	902	}
633		903	die $@;
634	register $base, $pkg;
635	}
636
637	sub unload_extension {
638	my ($pkg) = @_;
639
640	warn "removing extension $pkg\n";
641
642	# remove hooks
643	#TODO
644	# for my $idx (0 .. $#PLUGIN_EVENT) {
645	# delete $hook[$idx]{$pkg};
646	# }	904	}
647		905
648	# remove commands	906	push @EXTS, $pkg;
649	for my $name (keys %command) {
650	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
651
652	if (@cb) {
653	$command{$name} = \@cb;
654	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
655	} else {
656	delete $command{$name};
657	delete $COMMAND{"$name\000"};
658	}
659	}
660
661	# remove extcmds
662	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
663	delete $extcmd{$name};
664	}
665
666	if (my $cb = $pkg->can ("unload")) {
667	eval {
668	$cb->($pkg);
669	1
670	} or warn "$pkg unloaded, but with errors: $@";
671	}
672
673	Symbol::delete_package $pkg;
674	}	907	}
675		908
676	sub load_extensions {	909	sub load_extensions {
677	my $LIBDIR = maps_directory "perl";
678
679	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
680	next unless -r $ext;	911	next unless -r $ext;
681	eval {	912	eval {
682	load_extension $ext;	913	load_extension $ext;
683	1	914	1
684	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
685	}	916	}
686	}	917	}
687		918
688	#############################################################################	919	#############################################################################
689	# extcmd framework, basically convert ext <msg>
690	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
691		920
692	attach_to_players	921	=head2 CORE EXTENSIONS
693	on_extcmd => sub {	922
		923	Functions and methods that extend core crossfire objects.
		924
		925	=cut
		926
		927	package cf::player;
		928
		929	use Coro::AIO;
		930
		931	=head3 cf::player
		932
		933	=over 4
		934
		935	=item cf::player::find $login
		936
		937	Returns the given player object, loading it if necessary (might block).
		938
		939	=cut
		940
		941	sub playerdir($) {
		942	cf::localdir
		943	. "/"
		944	. cf::playerdir
		945	. "/"
		946	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		947	}
		948
		949	sub path($) {
		950	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		951
		952	(playerdir $login) . "/$login.pl"
		953	}
		954
		955	sub find_active($) {
		956	$cf::PLAYER{$_[0]}
		957	and $cf::PLAYER{$_[0]}->active
		958	and $cf::PLAYER{$_[0]}
		959	}
		960
		961	sub exists($) {
		962	my ($login) = @_;
		963
		964	$cf::PLAYER{$login}
		965	or cf::sync_job { !aio_stat path $login }
		966	}
		967
		968	sub find($) {
		969	return $cf::PLAYER{$_[0]} || do {
		970	my $login = $_[0];
		971
		972	my $guard = cf::lock_acquire "user_find:$login";
		973
		974	$cf::PLAYER{$_[0]} || do {
		975	my $pl = load_pl path $login
		976	or return;
		977	$cf::PLAYER{$login} = $pl
		978	}
		979	}
		980	}
		981
		982	sub save($) {
		983	my ($pl) = @_;
		984
		985	return if $pl->{deny_save};
		986
		987	my $path = path $pl;
		988	my $guard = cf::lock_acquire "user_save:$path";
		989
		990	return if $pl->{deny_save};
		991
		992	aio_mkdir playerdir $pl, 0770;
		993	$pl->{last_save} = $cf::RUNTIME;
		994
		995	$pl->save_pl ($path);
		996	Coro::cede;
		997	}
		998
		999	sub new($) {
		1000	my ($login) = @_;
		1001
		1002	my $self = create;
		1003
		1004	$self->ob->name ($login);
		1005	$self->{deny_save} = 1;
		1006
		1007	$cf::PLAYER{$login} = $self;
		1008
		1009	$self
		1010	}
		1011
		1012	=item $pl->quit_character
		1013
		1014	Nukes the player without looking back. If logged in, the connection will
		1015	be destroyed. May block for a long time.
		1016
		1017	=cut
		1018
		1019	sub quit_character {
		1020	my ($pl) = @_;
		1021
		1022	$pl->{deny_save} = 1;
		1023	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1024
		1025	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1026	$pl->deactivate;
		1027	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1028	$pl->ns->destroy if $pl->ns;
		1029
		1030	my $path = playerdir $pl;
		1031	my $temp = "$path~$cf::RUNTIME~deleting~";
		1032	aio_rename $path, $temp;
		1033	delete $cf::PLAYER{$pl->ob->name};
		1034	$pl->destroy;
		1035	IO::AIO::aio_rmtree $temp;
		1036	}
		1037
		1038	=item cf::player::list_logins
		1039
		1040	Returns am arrayref of all valid playernames in the system, can take a
		1041	while and may block, so not sync_job-capable, ever.
		1042
		1043	=cut
		1044
		1045	sub list_logins {
		1046	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1047	or return [];
		1048
		1049	my @logins;
		1050
		1051	for my $login (@$dirs) {
		1052	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1053	aio_read $fh, 0, 512, my $buf, 0 or next;
		1054	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1055
		1056	utf8::decode $login;
		1057	push @logins, $login;
		1058	}
		1059
		1060	\@logins
		1061	}
		1062
		1063	=item $player->maps
		1064
		1065	Returns an arrayref of map paths that are private for this
		1066	player. May block.
		1067
		1068	=cut
		1069
		1070	sub maps($) {
		1071	my ($pl) = @_;
		1072
		1073	my $files = aio_readdir playerdir $pl
		1074	or return;
		1075
		1076	my @paths;
		1077
		1078	for (@$files) {
		1079	utf8::decode $_;
		1080	next if /\.(?:pl|pst)$/;
		1081	next unless /^$PATH_SEP/o;
		1082
		1083	s/\.map$//;
		1084	push @paths, "~" . $pl->ob->name . "/" . $_;
		1085	}
		1086
		1087	\@paths
		1088	}
		1089
		1090	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1091
		1092	Sends an ext reply to the player.
		1093
		1094	=cut
		1095
		1096	sub ext_reply($$$%) {
		1097	my ($self, $id, %msg) = @_;
		1098
		1099	$msg{msgid} = $id;
		1100
		1101	$self->send ("ext " . cf::to_json \%msg);
		1102	}
		1103
		1104	package cf;
		1105
		1106	=back
		1107
		1108
		1109	=head3 cf::map
		1110
		1111	=over 4
		1112
		1113	=cut
		1114
		1115	package cf::map;
		1116
		1117	use Fcntl;
		1118	use Coro::AIO;
		1119
		1120	use overload
		1121	'""' => \&as_string,
		1122	fallback => 1;
		1123
		1124	our $MAX_RESET = 3600;
		1125	our $DEFAULT_RESET = 3000;
		1126
		1127	sub generate_random_map {
		1128	my ($self, $rmp) = @_;
		1129	# mit "rum" bekleckern, nicht
		1130	$self->_create_random_map (
		1131	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1132	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1133	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1134	$rmp->{exit_on_final_map},
		1135	$rmp->{xsize}, $rmp->{ysize},
		1136	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1137	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1138	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1139	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1140	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1141	(cf::region::find $rmp->{region}), $rmp->{custom}
		1142	)
		1143	}
		1144
		1145	=item cf::map->register ($regex, $prio)
		1146
		1147	Register a handler for the map path matching the given regex at the
		1148	givne priority (higher is better, built-in handlers have priority 0, the
		1149	default).
		1150
		1151	=cut
		1152
		1153	sub register {
		1154	my (undef, $regex, $prio) = @_;
		1155	my $pkg = caller;
		1156
		1157	no strict;
		1158	push @{"$pkg\::ISA"}, __PACKAGE__;
		1159
		1160	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1161	}
		1162
		1163	# also paths starting with '/'
		1164	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1165
		1166	sub thawer_merge {
		1167	my ($self, $merge) = @_;
		1168
		1169	# we have to keep some variables in memory intact
		1170	local $self->{path};
		1171	local $self->{load_path};
		1172	local $self->{deny_save};
		1173	local $self->{deny_reset};
		1174
		1175	$self->SUPER::thawer_merge ($merge);
		1176	}
		1177
		1178	sub normalise {
		1179	my ($path, $base) = @_;
		1180
		1181	# map plan:
		1182	#
		1183	# /! non-realised random map exit (special hack!)
		1184	# {... are special paths that are not being touched
		1185	# ?xxx/... are special absolute paths
		1186	# ?random/... random maps
		1187	# /... normal maps
		1188	# ~user/... per-player map of a specific user
		1189
		1190	$path =~ s/$PATH_SEP/\//go;
		1191
		1192	# treat it as relative path if it starts with
		1193	# something that looks reasonable
		1194	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1195	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1196
		1197	$base =~ s{[^/]+/?$}{};
		1198	$path = "$base/$path";
		1199	}
		1200
		1201	for ($path) {
		1202	redo if s{//}{/};
		1203	redo if s{/\.?/}{/};
		1204	redo if s{/[^/]+/\.\./}{/};
		1205	}
		1206
		1207	$path
		1208	}
		1209
		1210	sub new_from_path {
		1211	my (undef, $path, $base) = @_;
		1212
		1213	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1214
		1215	$path = normalise $path, $base;
		1216
		1217	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1218	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1219	my $self = bless cf::map::new, $pkg;
		1220	$self->{path} = $path; $self->path ($path);
		1221	$self->init; # pass $1 etc.
		1222	return $self;
		1223	}
		1224	}
		1225
		1226	Carp::carp "unable to resolve path '$path'.";
		1227	()
		1228	}
		1229
		1230	sub init {
		1231	my ($self) = @_;
		1232
		1233	$self
		1234	}
		1235
		1236	sub as_string {
		1237	my ($self) = @_;
		1238
		1239	"$self->{path}"
		1240	}
		1241
		1242	# the displayed name, this is a one way mapping
		1243	sub visible_name {
		1244	&as_string
		1245	}
		1246
		1247	# the original (read-only) location
		1248	sub load_path {
		1249	my ($self) = @_;
		1250
		1251	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1252	}
		1253
		1254	# the temporary/swap location
		1255	sub save_path {
		1256	my ($self) = @_;
		1257
		1258	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1259	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1260	}
		1261
		1262	# the unique path, undef == no special unique path
		1263	sub uniq_path {
		1264	my ($self) = @_;
		1265
		1266	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1267	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1268	}
		1269
		1270	# and all this just because we cannot iterate over
		1271	# all maps in C++...
		1272	sub change_all_map_light {
		1273	my ($change) = @_;
		1274
		1275	$_->change_map_light ($change)
		1276	for grep $_->outdoor, values %cf::MAP;
		1277	}
		1278
		1279	sub unlink_save {
		1280	my ($self) = @_;
		1281
		1282	utf8::encode (my $save = $self->save_path);
		1283	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1284	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1285	}
		1286
		1287	sub load_header_from($) {
		1288	my ($self, $path) = @_;
		1289
		1290	utf8::encode $path;
		1291	aio_open $path, O_RDONLY, 0
		1292	or return;
		1293
		1294	$self->_load_header ($path)
		1295	or return;
		1296
		1297	$self->{load_path} = $path;
		1298
		1299	1
		1300	}
		1301
		1302	sub load_orig {
		1303	my ($self) = @_;
		1304
		1305	$self->load_header_from ($self->load_path)
		1306	}
		1307
		1308	sub load_temp {
		1309	my ($self) = @_;
		1310
		1311	$self->load_header_from ($self->save_path)
		1312	}
		1313
		1314	sub load_header {
		1315	my ($self) = @_;
		1316
		1317	if ($self->load_temp) {
		1318	$self->last_access ((delete $self->{last_access})
		1319	|| $cf::RUNTIME); #d#
		1320	# safety
		1321	$self->{instantiate_time} = $cf::RUNTIME
		1322	if $self->{instantiate_time} > $cf::RUNTIME;
		1323	} else {
		1324	$self->load_orig
		1325	or return;
		1326
		1327	$self->{load_original} = 1;
		1328	$self->{instantiate_time} = $cf::RUNTIME;
		1329	$self->last_access ($cf::RUNTIME);
		1330	$self->instantiate;
		1331	}
		1332
		1333	1
		1334	}
		1335
		1336	sub find;
		1337	sub find {
		1338	my ($path, $origin) = @_;
		1339
		1340	$path = normalise $path, $origin && $origin->path;
		1341
		1342	cf::lock_wait "map_find:$path";
		1343
		1344	$cf::MAP{$path} || do {
		1345	my $guard = cf::lock_acquire "map_find:$path";
		1346	my $map = new_from_path cf::map $path
		1347	or return;
		1348
		1349	$map->{last_save} = $cf::RUNTIME;
		1350
		1351	$map->load_header
		1352	or return;
		1353
		1354	if ($map->should_reset) {
		1355	# doing this can freeze the server in a sync job, obviously
		1356	#$cf::WAIT_FOR_TICK->wait;
		1357	$map->reset;
		1358	undef $guard;
		1359	$map = find $path
		1360	or return;
		1361	}
		1362
		1363	$cf::MAP{$path} = $map
		1364	}
		1365	}
		1366
		1367	sub load {
		1368	my ($self) = @_;
		1369
		1370	my $path = $self->{path};
		1371	my $guard = cf::lock_acquire "map_load:$path";
		1372
		1373	return if $self->in_memory != cf::MAP_SWAPPED;
		1374
		1375	$self->in_memory (cf::MAP_LOADING);
		1376
		1377	$self->alloc;
		1378	$self->_load_objects ($self->{load_path}, 1)
		1379	or return;
		1380
		1381	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1382	if delete $self->{load_original};
		1383
		1384	if (my $uniq = $self->uniq_path) {
		1385	utf8::encode $uniq;
		1386	if (aio_open $uniq, O_RDONLY, 0) {
		1387	$self->clear_unique_items;
		1388	$self->_load_objects ($uniq, 0);
		1389	}
		1390	}
		1391
		1392	Coro::cede;
		1393
		1394	# now do the right thing for maps
		1395	$self->link_multipart_objects;
		1396
		1397	unless ($self->{deny_activate}) {
		1398	$self->decay_objects;
		1399	$self->fix_auto_apply;
		1400	$self->update_buttons;
		1401	Coro::cede;
		1402	$self->set_darkness_map;
		1403	$self->difficulty ($self->estimate_difficulty)
		1404	unless $self->difficulty;
		1405	Coro::cede;
		1406	$self->activate;
		1407	}
		1408
		1409	$self->in_memory (cf::MAP_IN_MEMORY);
		1410	}
		1411
		1412	sub customise_for {
694	my ($pl, $buf) = @_;	1413	my ($self, $ob) = @_;
695		1414
696	my $msg = eval { from_json $buf };	1415	return find "~" . $ob->name . "/" . $self->{path}
		1416	if $self->per_player;
697		1417
698	if (ref $msg) {	1418	$self
699	if (my $cb = $extcmd{$msg->{msgtype}}) {	1419	}
700	if (my %reply = $cb->[0]->($pl, $msg)) {	1420
701	$pl->ext_reply ($msg->{msgid}, %reply);	1421	# find and load all maps in the 3x3 area around a map
702	}	1422	sub load_diag {
		1423	my ($map) = @_;
		1424
		1425	my @diag; # diagonal neighbours
		1426
		1427	for (0 .. 3) {
		1428	my $neigh = $map->tile_path ($_)
		1429	or next;
		1430	$neigh = find $neigh, $map
		1431	or next;
		1432	$neigh->load;
		1433
		1434	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1435	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1436	}
		1437
		1438	for (@diag) {
		1439	my $neigh = find @$_
		1440	or next;
		1441	$neigh->load;
		1442	}
		1443	}
		1444
		1445	sub find_sync {
		1446	my ($path, $origin) = @_;
		1447
		1448	cf::sync_job { find $path, $origin }
		1449	}
		1450
		1451	sub do_load_sync {
		1452	my ($map) = @_;
		1453
		1454	cf::sync_job { $map->load };
		1455	}
		1456
		1457	our %MAP_PREFETCH;
		1458	our $MAP_PREFETCHER = undef;
		1459
		1460	sub find_async {
		1461	my ($path, $origin) = @_;
		1462
		1463	$path = normalise $path, $origin && $origin->{path};
		1464
		1465	if (my $map = $cf::MAP{$path}) {
		1466	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1467	}
		1468
		1469	undef $MAP_PREFETCH{$path};
		1470	$MAP_PREFETCHER ||= cf::async {
		1471	while (%MAP_PREFETCH) {
		1472	for my $path (keys %MAP_PREFETCH) {
		1473	my $map = find $path
		1474	or next;
		1475	$map->load;
		1476
		1477	delete $MAP_PREFETCH{$path};
703	}	1478	}
		1479	}
		1480	undef $MAP_PREFETCHER;
		1481	};
		1482
		1483	()
		1484	}
		1485
		1486	sub save {
		1487	my ($self) = @_;
		1488
		1489	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1490
		1491	$self->{last_save} = $cf::RUNTIME;
		1492
		1493	return unless $self->dirty;
		1494
		1495	my $save = $self->save_path; utf8::encode $save;
		1496	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1497
		1498	$self->{load_path} = $save;
		1499
		1500	return if $self->{deny_save};
		1501
		1502	local $self->{last_access} = $self->last_access;#d#
		1503
		1504	cf::async {
		1505	$_->contr->save for $self->players;
		1506	};
		1507
		1508	if ($uniq) {
		1509	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1510	$self->_save_objects ($uniq, cf::IO_UNIQUES);
704	} else {	1511	} else {
705	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1512	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
706	}
707
708	cf::override;
709	},	1513	}
710	;	1514	}
711		1515
712	#############################################################################	1516	sub swap_out {
713	# load/save/clean perl data associated with a map
714
715	*cf::mapsupport::on_clean = sub {
716	my ($map) = @_;	1517	my ($self) = @_;
717		1518
718	my $path = $map->tmpname;	1519	# save first because save cedes
719	defined $path or return;	1520	$self->save;
720		1521
721	unlink "$path.pst";	1522	my $lock = cf::lock_acquire "map_data:" . $self->path;
722	};
723		1523
724	attach_to_maps prio => -10000, package => cf::mapsupport::;	1524	return if $self->players;
		1525	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1526	return if $self->{deny_save};
725		1527
726	#############################################################################	1528	$self->clear;
727	# load/save perl data associated with player->ob objects	1529	$self->in_memory (cf::MAP_SWAPPED);
728
729	sub all_objects(@) {
730	@_, map all_objects ($_->inv), @_
731	}	1530	}
732		1531
733	# TODO: compatibility cruft, remove when no longer needed	1532	sub reset_at {
734	attach_to_players	1533	my ($self) = @_;
735	on_load => sub {
736	my ($pl, $path) = @_;
737		1534
738	for my $o (all_objects $pl->ob) {	1535	# TODO: safety, remove and allow resettable per-player maps
739	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1536	return 1e99 if $self->isa ("ext::map_per_player");#d#
740	$o->set_ob_key_value ("_perl_data");	1537	return 1e99 if $self->{deny_reset};
741		1538
742	%$o = %{ Storable::thaw pack "H*", $value };	1539	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
743	}	1540	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
744	}	1541
		1542	$time + $to
		1543	}
		1544
		1545	sub should_reset {
		1546	my ($self) = @_;
		1547
		1548	$self->reset_at <= $cf::RUNTIME
		1549	}
		1550
		1551	sub reset {
		1552	my ($self) = @_;
		1553
		1554	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1555
		1556	return if $self->players;
		1557	return if $self->isa ("ext::map_per_player");#d#
		1558
		1559	warn "resetting map ", $self->path;#d#
		1560
		1561	delete $cf::MAP{$self->path};
		1562
		1563	$self->in_memory (cf::MAP_SWAPPED);
		1564	$self->clear;
		1565
		1566	$_->clear_links_to ($self) for values %cf::MAP;
		1567
		1568	$self->unlink_save;
		1569	$self->destroy;
		1570	}
		1571
		1572	my $nuke_counter = "aaaa";
		1573
		1574	sub nuke {
		1575	my ($self) = @_;
		1576
		1577	delete $cf::MAP{$self->path};
		1578
		1579	$self->unlink_save;
		1580
		1581	bless $self, "cf::map";
		1582	delete $self->{deny_reset};
		1583	$self->{deny_save} = 1;
		1584	$self->reset_timeout (1);
		1585	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1586
		1587	$cf::MAP{$self->path} = $self;
		1588
		1589	$self->reset; # polite request, might not happen
		1590	}
		1591
		1592	=item cf::map::unique_maps
		1593
		1594	Returns an arrayref of paths of all shared maps that have
		1595	instantiated unique items. May block.
		1596
		1597	=cut
		1598
		1599	sub unique_maps() {
		1600	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1601	or return;
		1602
		1603	my @paths;
		1604
		1605	for (@$files) {
		1606	utf8::decode $_;
		1607	next if /\.pst$/;
		1608	next unless /^$PATH_SEP/o;
		1609
		1610	s/\.map$//;
		1611	push @paths, $_;
745	},	1612	}
746	;
747		1613
748	#############################################################################	1614	\@paths
		1615	}
749		1616
750	=head2 CORE EXTENSIONS	1617	package cf;
751		1618
752	Functions and methods that extend core crossfire objects.	1619	=back
		1620
		1621	=head3 cf::object
		1622
		1623	=cut
		1624
		1625	package cf::object;
753		1626
754	=over 4	1627	=over 4
755		1628
756	=item cf::player::exists $login	1629	=item $ob->inv_recursive
757		1630
758	Returns true when the given account exists.	1631	Returns the inventory of the object _and_ their inventories, recursively.
759		1632
760	=cut	1633	=cut
761		1634
762	sub cf::player::exists($) {	1635	sub inv_recursive_;
763	cf::player::find $_[0]	1636	sub inv_recursive_ {
764	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1637	map { $_, inv_recursive_ $_->inv } @_
765	}	1638	}
766		1639
		1640	sub inv_recursive {
		1641	inv_recursive_ inv $_[0]
		1642	}
		1643
		1644	package cf;
		1645
		1646	=back
		1647
		1648	=head3 cf::object::player
		1649
		1650	=over 4
		1651
767	=item $player->reply ($npc, $msg[, $flags])	1652	=item $player_object->reply ($npc, $msg[, $flags])
768		1653
769	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1654	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
770	can be C<undef>. Does the right thing when the player is currently in a	1655	can be C<undef>. Does the right thing when the player is currently in a
771	dialogue with the given NPC character.	1656	dialogue with the given NPC character.
772		1657
773	=cut	1658	=cut
774		1659
775	# rough implementation of a future "reply" method that works	1660	# rough implementation of a future "reply" method that works
776	# with dialog boxes.	1661	# with dialog boxes.
		1662	#TODO: the first argument must go, split into a $npc->reply_to ( method
777	sub cf::object::player::reply($$$;$) {	1663	sub cf::object::player::reply($$$;$) {
778	my ($self, $npc, $msg, $flags) = @_;	1664	my ($self, $npc, $msg, $flags) = @_;
779		1665
780	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1666	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
781		1667
…		…
785	$msg = $npc->name . " says: $msg" if $npc;	1671	$msg = $npc->name . " says: $msg" if $npc;
786	$self->message ($msg, $flags);	1672	$self->message ($msg, $flags);
787	}	1673	}
788	}	1674	}
789		1675
790	=item $player->ext_reply ($msgid, $msgtype, %msg)	1676	=item $player_object->may ("access")
791		1677
792	Sends an ext reply to the player.	1678	Returns wether the given player is authorized to access resource "access"
		1679	(e.g. "command_wizcast").
793		1680
794	=cut	1681	=cut
795		1682
796	sub cf::player::ext_reply($$$%) {	1683	sub cf::object::player::may {
		1684	my ($self, $access) = @_;
		1685
		1686	$self->flag (cf::FLAG_WIZ) ||
		1687	(ref $cf::CFG{"may_$access"}
		1688	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1689	: $cf::CFG{"may_$access"})
		1690	}
		1691
		1692	=item $player_object->enter_link
		1693
		1694	Freezes the player and moves him/her to a special map (C<{link}>).
		1695
		1696	The player should be reasonably safe there for short amounts of time. You
		1697	I<MUST> call C<leave_link> as soon as possible, though.
		1698
		1699	Will never block.
		1700
		1701	=item $player_object->leave_link ($map, $x, $y)
		1702
		1703	Moves the player out of the special C<{link}> map onto the specified
		1704	map. If the map is not valid (or omitted), the player will be moved back
		1705	to the location he/she was before the call to C<enter_link>, or, if that
		1706	fails, to the emergency map position.
		1707
		1708	Might block.
		1709
		1710	=cut
		1711
		1712	sub link_map {
		1713	unless ($LINK_MAP) {
		1714	$LINK_MAP = cf::map::find "{link}"
		1715	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1716	$LINK_MAP->load;
		1717	}
		1718
		1719	$LINK_MAP
		1720	}
		1721
		1722	sub cf::object::player::enter_link {
		1723	my ($self) = @_;
		1724
		1725	$self->deactivate_recursive;
		1726
		1727	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1728
		1729	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1730	if $self->map;
		1731
		1732	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1733	}
		1734
		1735	sub cf::object::player::leave_link {
		1736	my ($self, $map, $x, $y) = @_;
		1737
		1738	my $link_pos = delete $self->{_link_pos};
		1739
		1740	unless ($map) {
		1741	# restore original map position
		1742	($map, $x, $y) = @{ $link_pos || [] };
		1743	$map = cf::map::find $map;
		1744
		1745	unless ($map) {
		1746	($map, $x, $y) = @$EMERGENCY_POSITION;
		1747	$map = cf::map::find $map
		1748	or die "FATAL: cannot load emergency map\n";
		1749	}
		1750	}
		1751
		1752	($x, $y) = (-1, -1)
		1753	unless (defined $x) && (defined $y);
		1754
		1755	# use -1 or undef as default coordinates, not 0, 0
		1756	($x, $y) = ($map->enter_x, $map->enter_y)
		1757	if $x <=0 && $y <= 0;
		1758
		1759	$map->load;
		1760	$map->load_diag;
		1761
		1762	return unless $self->contr->active;
		1763	$self->activate_recursive;
		1764	$self->enter_map ($map, $x, $y);
		1765	}
		1766
		1767	cf::player->attach (
		1768	on_logout => sub {
		1769	my ($pl) = @_;
		1770
		1771	# abort map switching before logout
		1772	if ($pl->ob->{_link_pos}) {
		1773	cf::sync_job {
		1774	$pl->ob->leave_link
		1775	};
		1776	}
		1777	},
		1778	on_login => sub {
		1779	my ($pl) = @_;
		1780
		1781	# try to abort aborted map switching on player login :)
		1782	# should happen only on crashes
		1783	if ($pl->ob->{_link_pos}) {
		1784	$pl->ob->enter_link;
		1785	(async {
		1786	# we need this sleep as the login has a concurrent enter_exit running
		1787	# and this sleep increases chances of the player not ending up in scorn
		1788	$pl->ob->reply (undef,
		1789	"There was an internal problem at your last logout, "
		1790	. "the server will try to bring you to your intended destination in a second.",
		1791	cf::NDI_RED);
		1792	Coro::Timer::sleep 1;
		1793	$pl->ob->leave_link;
		1794	})->prio (2);
		1795	}
		1796	},
		1797	);
		1798
		1799	=item $player_object->goto ($path, $x, $y)
		1800
		1801	=cut
		1802
		1803	sub cf::object::player::goto {
		1804	my ($self, $path, $x, $y) = @_;
		1805
		1806	$self->enter_link;
		1807
		1808	(async {
		1809	my $map = cf::map::find $path;
		1810	$map = $map->customise_for ($self) if $map;
		1811
		1812	# warn "entering ", $map->path, " at ($x, $y)\n"
		1813	# if $map;
		1814
		1815	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1816
		1817	$self->leave_link ($map, $x, $y);
		1818	})->prio (1);
		1819	}
		1820
		1821	=item $player_object->enter_exit ($exit_object)
		1822
		1823	=cut
		1824
		1825	sub parse_random_map_params {
		1826	my ($spec) = @_;
		1827
		1828	my $rmp = { # defaults
		1829	xsize => (cf::rndm 15, 40),
		1830	ysize => (cf::rndm 15, 40),
		1831	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1832	#layout => string,
		1833	};
		1834
		1835	for (split /\n/, $spec) {
		1836	my ($k, $v) = split /\s+/, $_, 2;
		1837
		1838	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1839	}
		1840
		1841	$rmp
		1842	}
		1843
		1844	sub prepare_random_map {
		1845	my ($exit) = @_;
		1846
		1847	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1848
		1849	# all this does is basically replace the /! path by
		1850	# a new random map path (?random/...) with a seed
		1851	# that depends on the exit object
		1852
		1853	my $rmp = parse_random_map_params $exit->msg;
		1854
		1855	if ($exit->map) {
		1856	$rmp->{region} = $exit->map->region_name;
		1857	$rmp->{origin_map} = $exit->map->path;
		1858	$rmp->{origin_x} = $exit->x;
		1859	$rmp->{origin_y} = $exit->y;
		1860	}
		1861
		1862	$rmp->{random_seed} ||= $exit->random_seed;
		1863
		1864	my $data = cf::to_json $rmp;
		1865	my $md5 = Digest::MD5::md5_hex $data;
		1866	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1867
		1868	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1869	aio_write $fh, 0, (length $data), $data, 0;
		1870	undef $fh;
		1871	aio_rename "$meta~", $meta;
		1872
		1873	$exit->slaying ("?random/$md5");
		1874	$exit->msg (undef);
		1875	}
		1876	}
		1877
		1878	sub cf::object::player::enter_exit {
797	my ($self, $id, %msg) = @_;	1879	my ($self, $exit) = @_;
798		1880
799	$msg{msgid} = $id;	1881	return unless $self->type == cf::PLAYER;
800		1882
801	$self->send ("ext " . to_json \%msg);	1883	$self->enter_link;
		1884
		1885	(async {
		1886	$self->deactivate_recursive; # just to be sure
		1887	unless (eval {
		1888	prepare_random_map $exit
		1889	if $exit->slaying eq "/!";
		1890
		1891	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1892	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1893
		1894	1;
		1895	}) {
		1896	$self->message ("Something went wrong deep within the crossfire server. "
		1897	. "I'll try to bring you back to the map you were before. "
		1898	. "Please report this to the dungeon master!",
		1899	cf::NDI_UNIQUE | cf::NDI_RED);
		1900
		1901	warn "ERROR in enter_exit: $@";
		1902	$self->leave_link;
		1903	}
		1904	})->prio (1);
802	}	1905	}
		1906
		1907	=head3 cf::client
		1908
		1909	=over 4
		1910
		1911	=item $client->send_drawinfo ($text, $flags)
		1912
		1913	Sends a drawinfo packet to the client. Circumvents output buffering so
		1914	should not be used under normal circumstances.
		1915
		1916	=cut
		1917
		1918	sub cf::client::send_drawinfo {
		1919	my ($self, $text, $flags) = @_;
		1920
		1921	utf8::encode $text;
		1922	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1923	}
		1924
		1925
		1926	=item $success = $client->query ($flags, "text", \&cb)
		1927
		1928	Queues a query to the client, calling the given callback with
		1929	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1930	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1931
		1932	Queries can fail, so check the return code. Or don't, as queries will become
		1933	reliable at some point in the future.
		1934
		1935	=cut
		1936
		1937	sub cf::client::query {
		1938	my ($self, $flags, $text, $cb) = @_;
		1939
		1940	return unless $self->state == ST_PLAYING
		1941	|| $self->state == ST_SETUP
		1942	|| $self->state == ST_CUSTOM;
		1943
		1944	$self->state (ST_CUSTOM);
		1945
		1946	utf8::encode $text;
		1947	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1948
		1949	$self->send_packet ($self->{query_queue}[0][0])
		1950	if @{ $self->{query_queue} } == 1;
		1951	}
		1952
		1953	cf::client->attach (
		1954	on_reply => sub {
		1955	my ($ns, $msg) = @_;
		1956
		1957	# this weird shuffling is so that direct followup queries
		1958	# get handled first
		1959	my $queue = delete $ns->{query_queue}
		1960	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1961
		1962	(shift @$queue)->[1]->($msg);
		1963
		1964	push @{ $ns->{query_queue} }, @$queue;
		1965
		1966	if (@{ $ns->{query_queue} } == @$queue) {
		1967	if (@$queue) {
		1968	$ns->send_packet ($ns->{query_queue}[0][0]);
		1969	} else {
		1970	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1971	}
		1972	}
		1973	},
		1974	);
		1975
		1976	=item $client->async (\&cb)
		1977
		1978	Create a new coroutine, running the specified callback. The coroutine will
		1979	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1980	or loss of connection).
		1981
		1982	=cut
		1983
		1984	sub cf::client::async {
		1985	my ($self, $cb) = @_;
		1986
		1987	my $coro = &Coro::async ($cb);
		1988
		1989	$coro->on_destroy (sub {
		1990	delete $self->{_coro}{$coro+0};
		1991	});
		1992
		1993	$self->{_coro}{$coro+0} = $coro;
		1994
		1995	$coro
		1996	}
		1997
		1998	cf::client->attach (
		1999	on_destroy => sub {
		2000	my ($ns) = @_;
		2001
		2002	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2003	},
		2004	);
803		2005
804	=back	2006	=back
805		2007
806	=cut
807
808	#############################################################################
809		2008
810	=head2 SAFE SCRIPTING	2009	=head2 SAFE SCRIPTING
811		2010
812	Functions that provide a safe environment to compile and execute	2011	Functions that provide a safe environment to compile and execute
813	snippets of perl code without them endangering the safety of the server	2012	snippets of perl code without them endangering the safety of the server
814	itself. Looping constructs, I/O operators and other built-in functionality	2013	itself. Looping constructs, I/O operators and other built-in functionality
815	is not available in the safe scripting environment, and the number of	2014	is not available in the safe scripting environment, and the number of
816	functions and methods that cna be called is greatly reduced.	2015	functions and methods that can be called is greatly reduced.
817		2016
818	=cut	2017	=cut
819		2018
820	our $safe = new Safe "safe";	2019	our $safe = new Safe "safe";
821	our $safe_hole = new Safe::Hole;	2020	our $safe_hole = new Safe::Hole;
…		…
828		2027
829	=pod	2028	=pod
830		2029
831	The following fucntions and emthods are available within a safe environment:	2030	The following fucntions and emthods are available within a safe environment:
832		2031
833	cf::object contr pay_amount pay_player	2032	cf::object contr pay_amount pay_player map
834	cf::object::player player	2033	cf::object::player player
835	cf::player peaceful	2034	cf::player peaceful
		2035	cf::map trigger
836		2036
837	=cut	2037	=cut
838		2038
839	for (	2039	for (
840	["cf::object" => qw(contr pay_amount pay_player)],	2040	["cf::object" => qw(contr pay_amount pay_player map)],
841	["cf::object::player" => qw(player)],	2041	["cf::object::player" => qw(player)],
842	["cf::player" => qw(peaceful)],	2042	["cf::player" => qw(peaceful)],
		2043	["cf::map" => qw(trigger)],
843	) {	2044	) {
844	no strict 'refs';	2045	no strict 'refs';
845	my ($pkg, @funs) = @$_;	2046	my ($pkg, @funs) = @$_;
846	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2047	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
847	for @funs;	2048	for @funs;
…		…
912	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2113	*{"safe::$fun"} = $safe_hole->wrap ($cb);
913	}	2114	}
914		2115
915	=back	2116	=back
916		2117
		2118	=cut
		2119
917	#############################################################################	2120	#############################################################################
918		2121
919	=head2 EXTENSION DATABASE SUPPORT	2122	=head2 EXTENSION DATABASE SUPPORT
920		2123
921	Crossfire maintains a very simple database for extension use. It can	2124	Crossfire maintains a very simple database for extension use. It can
…		…
955		2158
956	Immediately write the database to disk I<if it is dirty>.	2159	Immediately write the database to disk I<if it is dirty>.
957		2160
958	=cut	2161	=cut
959		2162
		2163	our $DB;
		2164
960	{	2165	{
961	my $db;
962	my $path = cf::localdir . "/database.pst";	2166	my $path = cf::localdir . "/database.pst";
963		2167
964	sub db_load() {	2168	sub db_load() {
965	warn "loading database $path\n";#d# remove later
966	$db = stat $path ? Storable::retrieve $path : { };	2169	$DB = stat $path ? Storable::retrieve $path : { };
967	}	2170	}
968		2171
969	my $pid;	2172	my $pid;
970		2173
971	sub db_save() {	2174	sub db_save() {
972	warn "saving database $path\n";#d# remove later
973	waitpid $pid, 0 if $pid;	2175	waitpid $pid, 0 if $pid;
974	if (0 == ($pid = fork)) {	2176	if (0 == ($pid = fork)) {
975	$db->{_meta}{version} = 1;	2177	$DB->{_meta}{version} = 1;
976	Storable::nstore $db, "$path~";	2178	Storable::nstore $DB, "$path~";
977	rename "$path~", $path;	2179	rename "$path~", $path;
978	cf::_exit 0 if defined $pid;	2180	cf::_exit 0 if defined $pid;
979	}	2181	}
980	}	2182	}
981		2183
…		…
984	sub db_sync() {	2186	sub db_sync() {
985	db_save if $dirty;	2187	db_save if $dirty;
986	undef $dirty;	2188	undef $dirty;
987	}	2189	}
988		2190
989	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2191	my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
990	db_sync;	2192	db_sync;
991	});	2193	});
992		2194
993	sub db_dirty() {	2195	sub db_dirty() {
994	$dirty = 1;	2196	$dirty = 1;
995	$idle->start;	2197	$idle->start;
996	}	2198	}
997		2199
998	sub db_get($;$) {	2200	sub db_get($;$) {
999	@_ >= 2	2201	@_ >= 2
1000	? $db->{$_[0]}{$_[1]}	2202	? $DB->{$_[0]}{$_[1]}
1001	: ($db->{$_[0]} ||= { })	2203	: ($DB->{$_[0]} ||= { })
1002	}	2204	}
1003		2205
1004	sub db_put($$;$) {	2206	sub db_put($$;$) {
1005	if (@_ >= 3) {	2207	if (@_ >= 3) {
1006	$db->{$_[0]}{$_[1]} = $_[2];	2208	$DB->{$_[0]}{$_[1]} = $_[2];
1007	} else {	2209	} else {
1008	$db->{$_[0]} = $_[1];	2210	$DB->{$_[0]} = $_[1];
1009	}	2211	}
1010	db_dirty;	2212	db_dirty;
1011	}	2213	}
1012		2214
1013	attach_global	2215	cf::global->attach (
1014	prio => 10000,	2216	prio => 10000,
1015	on_cleanup => sub {	2217	on_cleanup => sub {
1016	db_sync;	2218	db_sync;
1017	},	2219	},
1018	;	2220	);
1019	}	2221	}
1020		2222
1021	#############################################################################	2223	#############################################################################
1022	# the server's main()	2224	# the server's main()
1023		2225
		2226	sub cfg_load {
		2227	open my $fh, "<:utf8", cf::confdir . "/config"
		2228	or return;
		2229
		2230	local $/;
		2231	*CFG = YAML::Syck::Load <$fh>;
		2232
		2233	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2234
		2235	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2236	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2237
		2238	if (exists $CFG{mlockall}) {
		2239	eval {
		2240	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2241	and die "WARNING: m(un)lockall failed: $!\n";
		2242	};
		2243	warn $@ if $@;
		2244	}
		2245	}
		2246
1024	sub main {	2247	sub main {
		2248	# we must not ever block the main coroutine
		2249	local $Coro::idle = sub {
		2250	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2251	(async {
		2252	Event::one_event;
		2253	})->prio (Coro::PRIO_MAX);
		2254	};
		2255
		2256	cfg_load;
1025	db_load;	2257	db_load;
1026	load_extensions;	2258	load_extensions;
		2259
		2260	$TICK_WATCHER->start;
1027	Event::loop;	2261	Event::loop;
1028	}	2262	}
1029		2263
1030	#############################################################################	2264	#############################################################################
1031	# initialisation	2265	# initialisation and cleanup
1032		2266
		2267	# install some emergency cleanup handlers
		2268	BEGIN {
		2269	for my $signal (qw(INT HUP TERM)) {
		2270	Event->signal (
		2271	data => WF_AUTOCANCEL,
		2272	signal => $signal,
		2273	cb => sub {
		2274	cf::cleanup "SIG$signal";
		2275	},
		2276	);
		2277	}
		2278	}
		2279
		2280	sub emergency_save() {
		2281	my $freeze_guard = cf::freeze_mainloop;
		2282
		2283	warn "enter emergency perl save\n";
		2284
		2285	cf::sync_job {
		2286	# use a peculiar iteration method to avoid tripping on perl
		2287	# refcount bugs in for. also avoids problems with players
		2288	# and maps saved/destroyed asynchronously.
		2289	warn "begin emergency player save\n";
		2290	for my $login (keys %cf::PLAYER) {
		2291	my $pl = $cf::PLAYER{$login} or next;
		2292	$pl->valid or next;
		2293	$pl->save;
		2294	}
		2295	warn "end emergency player save\n";
		2296
		2297	warn "begin emergency map save\n";
		2298	for my $path (keys %cf::MAP) {
		2299	my $map = $cf::MAP{$path} or next;
		2300	$map->valid or next;
		2301	$map->save;
		2302	}
		2303	warn "end emergency map save\n";
		2304	};
		2305
		2306	warn "leave emergency perl save\n";
		2307	}
		2308
1033	sub _perl_reload(&) {	2309	sub reload() {
1034	my ($msg) = @_;	2310	# can/must only be called in main
		2311	if ($Coro::current != $Coro::main) {
		2312	warn "can only reload from main coroutine";
		2313	return;
		2314	}
1035		2315
1036	$msg->("reloading...");	2316	warn "reloading...";
		2317
		2318	warn "cancelling server ticker";
		2319	$TICK_WATCHER->cancel;
		2320
		2321	cf::emergency_save;
1037		2322
1038	eval {	2323	eval {
1039	# cancel all watchers	2324	# if anything goes wrong in here, we should simply crash as we already saved
		2325
		2326	warn "syncing database to disk";
		2327	cf::db_sync;
		2328
		2329	warn "cancelling all WF_AUTOCANCEL watchers";
1040	$_->cancel for Event::all_watchers;	2330	for (Event::all_watchers) {
		2331	$_->cancel if $_->data & WF_AUTOCANCEL;
		2332	}
1041		2333
1042	# unload all extensions	2334	warn "flushing outstanding aio requests";
1043	for (@exts) {	2335	for (;;) {
1044	$msg->("unloading <$_>");	2336	IO::AIO::flush;
1045	unload_extension $_;	2337	Coro::cede;
		2338	last unless IO::AIO::nreqs;
		2339	warn "iterate...";
		2340	}
		2341
		2342	warn "cancelling all extension coros";
		2343	$_->cancel for values %EXT_CORO;
		2344	%EXT_CORO = ();
		2345
		2346	warn "removing commands";
		2347	%COMMAND = ();
		2348
		2349	warn "removing ext commands";
		2350	%EXTCMD = ();
		2351
		2352	warn "unloading/nuking all extensions";
		2353	for my $pkg (@EXTS) {
		2354	warn "... unloading $pkg";
		2355
		2356	if (my $cb = $pkg->can ("unload")) {
		2357	eval {
		2358	$cb->($pkg);
		2359	1
		2360	} or warn "$pkg unloaded, but with errors: $@";
1046	}	2361	}
1047		2362
		2363	warn "... nuking $pkg";
		2364	Symbol::delete_package $pkg;
		2365	}
		2366
1048	# unload all modules loaded from $LIBDIR	2367	warn "unloading all perl modules loaded from $LIBDIR";
1049	while (my ($k, $v) = each %INC) {	2368	while (my ($k, $v) = each %INC) {
1050	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2369	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1051		2370
1052	$msg->("removing <$k>");	2371	warn "... unloading $k";
1053	delete $INC{$k};	2372	delete $INC{$k};
1054		2373
1055	$k =~ s/\.pm$//;	2374	$k =~ s/\.pm$//;
1056	$k =~ s/\//::/g;	2375	$k =~ s/\//::/g;
1057		2376
…		…
1060	}	2379	}
1061		2380
1062	Symbol::delete_package $k;	2381	Symbol::delete_package $k;
1063	}	2382	}
1064		2383
1065	# sync database to disk
1066	cf::db_sync;
1067
1068	# get rid of safe::, as good as possible	2384	warn "getting rid of safe::, as good as possible";
1069	Symbol::delete_package "safe::$_"	2385	Symbol::delete_package "safe::$_"
1070	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2386	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1071		2387
1072	# remove register_script_function callbacks
1073	# TODO
1074
1075	# unload cf.pm "a bit"	2388	warn "unloading cf.pm \"a bit\"";
1076	delete $INC{"cf.pm"};	2389	delete $INC{"cf.pm"};
1077		2390
1078	# don't, removes xs symbols, too,	2391	# don't, removes xs symbols, too,
1079	# and global variables created in xs	2392	# and global variables created in xs
1080	#Symbol::delete_package __PACKAGE__;	2393	#Symbol::delete_package __PACKAGE__;
1081		2394
1082	# reload cf.pm	2395	warn "unload completed, starting to reload now";
		2396
1083	$msg->("reloading cf.pm");	2397	warn "reloading cf.pm";
1084	require cf;	2398	require cf;
		2399	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1085		2400
1086	# load database again	2401	warn "loading config and database again";
		2402	cf::cfg_load;
1087	cf::db_load;	2403	cf::db_load;
1088		2404
1089	# load extensions	2405	warn "loading extensions";
1090	$msg->("load extensions");
1091	cf::load_extensions;	2406	cf::load_extensions;
1092		2407
1093	# reattach attachments to objects	2408	warn "reattaching attachments to objects/players";
1094	$msg->("reattach");
1095	_global_reattach;	2409	_global_reattach;
		2410	warn "reattaching attachments to maps";
		2411	reattach $_ for values %MAP;
		2412
		2413	warn "restarting server ticker";
		2414
		2415	$TICK_WATCHER->start;
1096	};	2416	};
1097	$msg->($@) if $@;
1098		2417
1099	$msg->("reloaded");	2418	if ($@) {
		2419	warn $@;
		2420	warn "error while reloading, exiting.";
		2421	exit 1;
		2422	}
		2423
		2424	warn "reloaded";
1100	};	2425	};
1101		2426
1102	sub perl_reload() {	2427	our $RELOAD_WATCHER; # used only during reload
1103	_perl_reload {
1104	warn $_[0];
1105	print "$_[0]\n";
1106	};
1107	}
1108		2428
1109	register_command "perl-reload", 0, sub {	2429	register_command "reload" => sub {
1110	my ($who, $arg) = @_;	2430	my ($who, $arg) = @_;
1111		2431
1112	if ($who->flag (FLAG_WIZ)) {	2432	if ($who->flag (FLAG_WIZ)) {
1113	_perl_reload {	2433	$who->message ("reloading server.");
1114	warn $_[0];	2434
1115	$who->message ($_[0]);	2435	# doing reload synchronously and two reloads happen back-to-back,
		2436	# coro crashes during coro_state_free->destroy here.
		2437
		2438	$RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
		2439	reload;
		2440	undef $RELOAD_WATCHER;
1116	};	2441	});
1117	}	2442	}
1118	};	2443	};
1119		2444
1120	register "<global>", __PACKAGE__;
1121
1122	unshift @INC, $LIBDIR;	2445	unshift @INC, $LIBDIR;
1123		2446
		2447	my $bug_warning = 0;
		2448
1124	$TICK_WATCHER = Event->timer (	2449	$TICK_WATCHER = Event->timer (
		2450	reentrant => 0,
		2451	parked => 1,
1125	prio => 1,	2452	prio => 0,
1126	at => $NEXT_TICK || 1,	2453	at => $NEXT_TICK || $TICK,
		2454	data => WF_AUTOCANCEL,
1127	cb => sub {	2455	cb => sub {
		2456	if ($Coro::current != $Coro::main) {
		2457	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2458	unless ++$bug_warning > 10;
		2459	return;
		2460	}
		2461
		2462	$NOW = Event::time;
		2463
1128	cf::server_tick; # one server iteration	2464	cf::server_tick; # one server iteration
1129		2465	$RUNTIME += $TICK;
1130	my $NOW = Event::time;
1131	$NEXT_TICK += $TICK;	2466	$NEXT_TICK += $TICK;
1132		2467
		2468	$WAIT_FOR_TICK->broadcast;
		2469	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2470
1133	# if we are delayed by four ticks, skip them all	2471	# if we are delayed by four ticks or more, skip them all
1134	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2472	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1135		2473
1136	$TICK_WATCHER->at ($NEXT_TICK);	2474	$TICK_WATCHER->at ($NEXT_TICK);
1137	$TICK_WATCHER->start;	2475	$TICK_WATCHER->start;
1138	},	2476	},
1139	);	2477	);
1140		2478
		2479	IO::AIO::max_poll_time $TICK * 0.2;
		2480
		2481	$AIO_POLL_WATCHER = Event->io (
		2482	fd => IO::AIO::poll_fileno,
		2483	poll => 'r',
		2484	prio => 5,
		2485	data => WF_AUTOCANCEL,
		2486	cb => \&IO::AIO::poll_cb,
		2487	);
		2488
		2489	$WRITE_RUNTIME_WATCHER = Event->timer (
		2490	data => WF_AUTOCANCEL,
		2491	after => 1,
		2492	interval => 10,
		2493	prio => 6, # keep it lowest so it acts like a watchdog
		2494	cb => Coro::unblock_sub {
		2495	write_runtime
		2496	or warn "ERROR: unable to write runtime file: $!";
		2497	},
		2498	);
		2499
		2500	END { cf::emergency_save }
		2501
1141	1	2502	1
1142		2503

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