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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.92 by root, Thu Dec 21 06:42:28 2006 UTC vs.
Revision 1.200 by root, Mon Jan 29 17:57:22 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 3.5 ();
		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;
10	use IO::AIO ();	23	use IO::AIO 2.32 ();
11	use YAML::Syck ();	24	use YAML::Syck ();
12	use Time::HiRes;	25	use Time::HiRes;
13	use Event;	26
14	$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
		28
		29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	32	$YAML::Syck::ImplicitUnicode = 1;
18		33
19	use strict;	34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
20
21	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
22		35
23	our %COMMAND = ();	36	our %COMMAND = ();
24	our %COMMAND_TIME = ();	37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	40	our %EXTCMD = ();
26		41	our %EXT_CORO = (); # coroutines bound to extensions
27	_init_vars;	42	our %EXT_MAP = (); # pluggable maps
28		43
29	our @EVENT;	44	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	45	our $LIBDIR = datadir . "/ext";
31		46
32	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
34	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
35		53
36	our %CFG;	54	our %CFG;
37		55
38	our $UPTIME; $UPTIME ||= time;	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
		88	sub cf::map::normalise;
39		89
40	#############################################################################	90	#############################################################################
41		91
42	=head2 GLOBAL VARIABLES	92	=head2 GLOBAL VARIABLES
43		93
44	=over 4	94	=over 4
45		95
46	=item $cf::UPTIME	96	=item $cf::UPTIME
47		97
48	The timestamp of the server start (so not actually an uptime).	98	The timestamp of the server start (so not actually an uptime).
		99
		100	=item $cf::RUNTIME
		101
		102	The time this server has run, starts at 0 and is increased by $cf::TICK on
		103	every server tick.
49		104
50	=item $cf::LIBDIR	105	=item $cf::LIBDIR
51		106
52	The perl library directory, where extensions and cf-specific modules can	107	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	108	be found. It will be added to C<@INC> automatically.
54		109
		110	=item $cf::NOW
		111
		112	The time of the last (current) server tick.
		113
55	=item $cf::TICK	114	=item $cf::TICK
56		115
57	The interval between server ticks, in seconds.	116	The interval between server ticks, in seconds.
58		117
59	=item %cf::CFG	118	=item %cf::CFG
60		119
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	120	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	121	from wherever your confdir points to.
		122
		123	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		124
		125	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		126	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		127	processing has been done. Call C<< ->wait >> on them to maximise the
		128	window of cpu time available, or simply to synchronise to the server tick.
63		129
64	=back	130	=back
65		131
66	=cut	132	=cut
67		133
68	BEGIN {	134	BEGIN {
69	*CORE::GLOBAL::warn = sub {	135	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	136	my $msg = join "", @_;
		137	utf8::encode $msg;
		138
71	$msg .= "\n"	139	$msg .= "\n"
72	unless $msg =~ /\n$/;	140	unless $msg =~ /\n$/;
73		141
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	142	LOG llevError, $msg;
76	};	143	};
77	}	144	}
78		145
		146	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		147	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		148	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		149	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		150	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	151	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
80		152
81	# we bless all objects into (empty) derived classes to force a method lookup	153	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	154	# within the Safe compartment.
83	for my $pkg (qw(	155	for my $pkg (qw(
		156	cf::global cf::attachable
84	cf::object cf::object::player	157	cf::object cf::object::player
85	cf::client cf::player	158	cf::client cf::player
86	cf::arch cf::living	159	cf::arch cf::living
87	cf::map cf::party cf::region	160	cf::map cf::party cf::region
88	)) {	161	)) {
…		…
92		165
93	$Event::DIED = sub {	166	$Event::DIED = sub {
94	warn "error in event callback: @_";	167	warn "error in event callback: @_";
95	};	168	};
96		169
97	my %ext_pkg;
98	my @exts;
99	my @hook;
100
101	=head2 UTILITY FUNCTIONS	170	=head2 UTILITY FUNCTIONS
102		171
103	=over 4	172	=over 4
104		173
		174	=item dumpval $ref
		175
105	=cut	176	=cut
		177
		178	sub dumpval {
		179	eval {
		180	local $SIG{__DIE__};
		181	my $d;
		182	if (1) {
		183	$d = new Data::Dumper([$_[0]], ["*var"]);
		184	$d->Terse(1);
		185	$d->Indent(2);
		186	$d->Quotekeys(0);
		187	$d->Useqq(1);
		188	#$d->Bless(...);
		189	$d->Seen($_[1]) if @_ > 1;
		190	$d = $d->Dump();
		191	}
		192	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		193	$d
		194	} || "[unable to dump $_[0]: '$@']";
		195	}
106		196
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	197	use JSON::Syck (); # TODO# replace by JSON::PC once working
108		198
109	=item $ref = cf::from_json $json	199	=item $ref = cf::from_json $json
110		200
…		…
126	sub to_json($) {	216	sub to_json($) {
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	217	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
128	JSON::Syck::Dump $_[0]	218	JSON::Syck::Dump $_[0]
129	}	219	}
130		220
		221	=item cf::lock_wait $string
		222
		223	Wait until the given lock is available. See cf::lock_acquire.
		224
		225	=item my $lock = cf::lock_acquire $string
		226
		227	Wait until the given lock is available and then acquires it and returns
		228	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		229	for example when the coroutine gets canceled), the lock is automatically
		230	returned.
		231
		232	Lock names should begin with a unique identifier (for example, cf::map::find
		233	uses map_find and cf::map::load uses map_load).
		234
		235	=cut
		236
		237	our %LOCK;
		238
		239	sub lock_wait($) {
		240	my ($key) = @_;
		241
		242	# wait for lock, if any
		243	while ($LOCK{$key}) {
		244	push @{ $LOCK{$key} }, $Coro::current;
		245	Coro::schedule;
		246	}
		247	}
		248
		249	sub lock_acquire($) {
		250	my ($key) = @_;
		251
		252	# wait, to be sure we are not locked
		253	lock_wait $key;
		254
		255	$LOCK{$key} = [];
		256
		257	Coro::guard {
		258	# wake up all waiters, to be on the safe side
		259	$_->ready for @{ delete $LOCK{$key} };
		260	}
		261	}
		262
		263	sub freeze_mainloop {
		264	return unless $TICK_WATCHER->is_active;
		265
		266	my $guard = Coro::guard {
		267	$TICK_WATCHER->start;
		268	$WRITE_RUNTIME_WATCHER->start;
		269	};
		270	$WRITE_RUNTIME_WATCHER->stop;
		271	$TICK_WATCHER->stop;
		272	$guard
		273	}
		274
		275	=item cf::async { BLOCK }
		276
		277	Currently the same as Coro::async_pool, meaning you cannot use
		278	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		279	thing you are allowed to do is call C<prio> on it.
		280
		281	=cut
		282
		283	BEGIN { *async = \&Coro::async_pool }
		284
		285	=item cf::sync_job { BLOCK }
		286
		287	The design of crossfire+ requires that the main coro ($Coro::main) is
		288	always able to handle events or runnable, as crossfire+ is only partly
		289	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		290
		291	If it must be done, put the blocking parts into C<sync_job>. This will run
		292	the given BLOCK in another coroutine while waiting for the result. The
		293	server will be frozen during this time, so the block should either finish
		294	fast or be very important.
		295
		296	=cut
		297
		298	sub sync_job(&) {
		299	my ($job) = @_;
		300
		301	if ($Coro::current == $Coro::main) {
		302	# this is the main coro, too bad, we have to block
		303	# till the operation succeeds, freezing the server :/
		304
		305	# TODO: use suspend/resume instead
		306	# (but this is cancel-safe)
		307	my $freeze_guard = freeze_mainloop;
		308
		309	my $busy = 1;
		310	my @res;
		311
		312	(async {
		313	@res = eval { $job->() };
		314	warn $@ if $@;
		315	undef $busy;
		316	})->prio (Coro::PRIO_MAX);
		317
		318	while ($busy) {
		319	Coro::cede or Event::one_event;
		320	}
		321
		322	wantarray ? @res : $res[0]
		323	} else {
		324	# we are in another coroutine, how wonderful, everything just works
		325
		326	$job->()
		327	}
		328	}
		329
		330	=item $coro = cf::async_ext { BLOCK }
		331
		332	Like async, but this coro is automatically being canceled when the
		333	extension calling this is being unloaded.
		334
		335	=cut
		336
		337	sub async_ext(&) {
		338	my $cb = shift;
		339
		340	my $coro = &Coro::async ($cb);
		341
		342	$coro->on_destroy (sub {
		343	delete $EXT_CORO{$coro+0};
		344	});
		345	$EXT_CORO{$coro+0} = $coro;
		346
		347	$coro
		348	}
		349
		350	sub write_runtime {
		351	my $runtime = cf::localdir . "/runtime";
		352
		353	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		354	or return;
		355
		356	my $value = $cf::RUNTIME + 90 + 10;
		357	# 10 is the runtime save interval, for a monotonic clock
		358	# 60 allows for the watchdog to kill the server.
		359
		360	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		361	and return;
		362
		363	aio_fsync $fh
		364	and return;
		365
		366	close $fh
		367	or return;
		368
		369	aio_rename "$runtime~", $runtime
		370	and return;
		371
		372	1
		373	}
		374
131	=back	375	=back
132		376
133	=cut	377	=cut
134		378
135	#############################################################################	379	#############################################################################
136		380
137	=head2 EVENTS AND OBJECT ATTACHMENTS	381	=head2 ATTACHABLE OBJECTS
		382
		383	Many objects in crossfire are so-called attachable objects. That means you can
		384	attach callbacks/event handlers (a collection of which is called an "attachment")
		385	to it. All such attachable objects support the following methods.
		386
		387	In the following description, CLASS can be any of C<global>, C<object>
		388	C<player>, C<client> or C<map> (i.e. the attachable objects in
		389	crossfire+).
138		390
139	=over 4	391	=over 4
140		392
141	=item $object->attach ($attachment, key => $value...)
142
143	=item $object->detach ($attachment)
144
145	Attach/detach a pre-registered attachment to an object.
146
147	=item $player->attach ($attachment, key => $value...)
148
149	=item $player->detach ($attachment)
150
151	Attach/detach a pre-registered attachment to a player.
152
153	=item $map->attach ($attachment, key => $value...)
154
155	=item $map->detach ($attachment)
156
157	Attach/detach a pre-registered attachment to a client.
158
159	=item $client->attach ($attachment, key => $value...)	393	=item $attachable->attach ($attachment, key => $value...)
160		394
161	=item $client->detach ($attachment)	395	=item $attachable->detach ($attachment)
162		396
163	Attach/detach a pre-registered attachment to a map.	397	Attach/detach a pre-registered attachment to a specific object and give it
		398	the specified key/value pairs as arguments.
164		399
165	=item $bool = $object->attached ($name)	400	Example, attach a minesweeper attachment to the given object, making it a
		401	10x10 minesweeper game:
166		402
167	=item $bool = $player->attached ($name)	403	$obj->attach (minesweeper => width => 10, height => 10);
168		404
169	=item $bool = $client->attached ($name)	405	=item $bool = $attachable->attached ($name)
170
171	=item $bool = $map->attached ($name)
172		406
173	Checks wether the named attachment is currently attached to the object.	407	Checks wether the named attachment is currently attached to the object.
174		408
175	=item cf::attach_global ...	409	=item cf::CLASS->attach ...
176		410
177	Attach handlers for global events.	411	=item cf::CLASS->detach ...
178		412
179	This and all following C<attach_*>-functions expect any number of the	413	Define an anonymous attachment and attach it to all objects of the given
180	following handler/hook descriptions:	414	CLASS. See the next function for an explanation of its arguments.
		415
		416	You can attach to global events by using the C<cf::global> class.
		417
		418	Example, log all player logins:
		419
		420	cf::player->attach (
		421	on_login => sub {
		422	my ($pl) = @_;
		423	...
		424	},
		425	);
		426
		427	Example, attach to the jeweler skill:
		428
		429	cf::object->attach (
		430	type => cf::SKILL,
		431	subtype => cf::SK_JEWELER,
		432	on_use_skill => sub {
		433	my ($sk, $ob, $part, $dir, $msg) = @_;
		434	...
		435	},
		436	);
		437
		438	=item cf::CLASS::attachment $name, ...
		439
		440	Register an attachment by C<$name> through which attachable objects of the
		441	given CLASS can refer to this attachment.
		442
		443	Some classes such as crossfire maps and objects can specify attachments
		444	that are attached at load/instantiate time, thus the need for a name.
		445
		446	These calls expect any number of the following handler/hook descriptions:
181		447
182	=over 4	448	=over 4
183		449
184	=item prio => $number	450	=item prio => $number
185		451
…		…
187	by another C<prio> setting). Lower priority handlers get executed	453	by another C<prio> setting). Lower priority handlers get executed
188	earlier. The default priority is C<0>, and many built-in handlers are	454	earlier. The default priority is C<0>, and many built-in handlers are
189	registered at priority C<-1000>, so lower priorities should not be used	455	registered at priority C<-1000>, so lower priorities should not be used
190	unless you know what you are doing.	456	unless you know what you are doing.
191		457
		458	=item type => $type
		459
		460	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		461	given type of objects only (the additional parameter C<subtype> can be
		462	used to further limit to the given subtype).
		463
192	=item on_I<event> => \&cb	464	=item on_I<event> => \&cb
193		465
194	Call the given code reference whenever the named event happens (event is	466	Call the given code reference whenever the named event happens (event is
195	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	467	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
196	handlers are recognised generally depends on the type of object these	468	handlers are recognised generally depends on the type of object these
…		…
205	package and register them. Only handlers for eevents supported by the	477	package and register them. Only handlers for eevents supported by the
206	object/class are recognised.	478	object/class are recognised.
207		479
208	=back	480	=back
209		481
210	=item cf::attach_to_type $object_type, $subtype, ...	482	Example, define an attachment called "sockpuppet" that calls the given
		483	event handler when a monster attacks:
211		484
212	Attach handlers for a specific object type (e.g. TRANSPORT) and	485	cf::object::attachment sockpuppet =>
213	subtype. If C<$subtype> is zero or undef, matches all objects of the given	486	on_skill_attack => sub {
214	type.	487	my ($self, $victim) = @_;
215		488	...
216	=item cf::attach_to_objects ...
217
218	Attach handlers to all objects. Do not use this except for debugging or
219	very rare events, as handlers are (obviously) called for I<all> objects in
220	the game.
221
222	=item cf::attach_to_players ...
223
224	Attach handlers to all players.
225
226	=item cf::attach_to_clients ...
227
228	Attach handlers to all players.
229
230	=item cf::attach_to_maps ...
231
232	Attach handlers to all maps.
233
234	=item cf:register_attachment $name, ...
235
236	Register an attachment by name through which objects can refer to this
237	attachment.
238
239	=item cf:register_player_attachment $name, ...
240
241	Register an attachment by name through which players can refer to this
242	attachment.
243
244	=item cf:register_map_attachment $name, ...
245
246	Register an attachment by name through which maps can refer to this
247	attachment.
248
249	=cut
250
251	# the following variables are defined in .xs and must not be re-created
252	our @CB_GLOBAL = (); # registry for all global events
253	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
254	our @CB_PLAYER = ();
255	our @CB_CLIENT = ();
256	our @CB_TYPE = (); # registry for type (cf-object class) based events
257	our @CB_MAP = ();
258
259	my %attachment;
260
261	sub _attach_cb($\%$$$) {
262	my ($registry, $undo, $event, $prio, $cb) = @_;
263
264	use sort 'stable';
265
266	$cb = [$prio, $cb];
267
268	@{$registry->[$event]} = sort
269	{ $a->[0] cmp $b->[0] }
270	@{$registry->[$event] || []}, $cb;
271
272	push @{$undo->{cb}}, [$event, $cb];
273	}
274
275	# attach handles attaching event callbacks
276	# the only thing the caller has to do is pass the correct
277	# registry (== where the callback attaches to).
278	sub _attach(\@$@) {
279	my ($registry, $klass, @arg) = @_;
280
281	my $prio = 0;
282
283	my %undo = (
284	registry => $registry,
285	cb => [],
286	);
287
288	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
289
290	while (@arg) {
291	my $type = shift @arg;
292
293	if ($type eq "prio") {
294	$prio = shift @arg;
295
296	} elsif ($type eq "package") {
297	my $pkg = shift @arg;
298
299	while (my ($name, $id) = each %cb_id) {
300	if (my $cb = $pkg->can ($name)) {
301	_attach_cb $registry, %undo, $id, $prio, $cb;
302	}
303	}	489	}
304
305	} elsif (exists $cb_id{$type}) {
306	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
307
308	} elsif (ref $type) {
309	warn "attaching objects not supported, ignoring.\n";
310
311	} else {
312	shift @arg;
313	warn "attach argument '$type' not supported, ignoring.\n";
314	}
315	}
316
317	\%undo
318	}
319
320	sub _attach_attachment {
321	my ($obj, $name, %arg) = @_;
322
323	return if exists $obj->{_attachment}{$name};
324
325	my $res;
326
327	if (my $attach = $attachment{$name}) {
328	my $registry = $obj->registry;
329
330	for (@$attach) {
331	my ($klass, @attach) = @$_;
332	$res = _attach @$registry, $klass, @attach;
333	}
334
335	$obj->{$name} = \%arg;
336	} else {
337	warn "object uses attachment '$name' that is not available, postponing.\n";
338	}
339
340	$obj->{_attachment}{$name} = undef;
341
342	$res->{attachment} = $name;
343	$res
344	}
345
346	*cf::object::attach =
347	*cf::player::attach =
348	*cf::client::attach =
349	*cf::map::attach = sub {
350	my ($obj, $name, %arg) = @_;
351
352	_attach_attachment $obj, $name, %arg;
353	};
354
355	# all those should be optimised
356	*cf::object::detach =
357	*cf::player::detach =
358	*cf::client::detach =
359	*cf::map::detach = sub {
360	my ($obj, $name) = @_;
361
362	delete $obj->{_attachment}{$name};
363	reattach ($obj);
364	};
365
366	*cf::object::attached =
367	*cf::player::attached =
368	*cf::client::attached =
369	*cf::map::attached = sub {
370	my ($obj, $name) = @_;
371
372	exists $obj->{_attachment}{$name}
373	};
374
375	sub attach_global {
376	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
377	}
378
379	sub attach_to_type {
380	my $type = shift;
381	my $subtype = shift;
382
383	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
384	}
385
386	sub attach_to_objects {
387	_attach @CB_OBJECT, KLASS_OBJECT, @_
388	}
389
390	sub attach_to_players {
391	_attach @CB_PLAYER, KLASS_PLAYER, @_
392	}
393
394	sub attach_to_clients {
395	_attach @CB_CLIENT, KLASS_CLIENT, @_
396	}
397
398	sub attach_to_maps {
399	_attach @CB_MAP, KLASS_MAP, @_
400	}
401
402	sub register_attachment {
403	my $name = shift;
404
405	$attachment{$name} = [[KLASS_OBJECT, @_]];
406	}
407
408	sub register_player_attachment {
409	my $name = shift;
410
411	$attachment{$name} = [[KLASS_PLAYER, @_]];
412	}
413
414	sub register_client_attachment {
415	my $name = shift;
416
417	$attachment{$name} = [[KLASS_CLIENT, @_]];
418	}
419
420	sub register_map_attachment {
421	my $name = shift;
422
423	$attachment{$name} = [[KLASS_MAP, @_]];
424	}
425
426	our $override;
427	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
428
429	sub override {
430	$override = 1;
431	@invoke_results = ();
432	}
433
434	sub do_invoke {
435	my $event = shift;
436	my $callbacks = shift;
437
438	@invoke_results = ();
439
440	local $override;
441
442	for (@$callbacks) {
443	eval { &{$_->[1]} };
444
445	if ($@) {
446	warn "$@";
447	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
448	override;
449	}
450
451	return 1 if $override;
452	}
453
454	0	490	}
455	}
456		491
457	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	492	=item $attachable->valid
458
459	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
460
461	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
462
463	=item $bool = $client->invoke (EVENT_CLIENT_XXX, ...)
464
465	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
466
467	Generate a global/object/player/map-specific event with the given arguments.
468
469	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
470	removed in future versions), and there is no public API to access override
471	results (if you must, access C<@cf::invoke_results> directly).
472
473	=back
474
475	=cut
476
477	#############################################################################
478
479	=head2 METHODS VALID FOR ALL CORE OBJECTS
480
481	=over 4
482
483	=item $object->valid, $player->valid, $client->valid, $map->valid
484		493
485	Just because you have a perl object does not mean that the corresponding	494	Just because you have a perl object does not mean that the corresponding
486	C-level object still exists. If you try to access an object that has no	495	C-level object still exists. If you try to access an object that has no
487	valid C counterpart anymore you get an exception at runtime. This method	496	valid C counterpart anymore you get an exception at runtime. This method
488	can be used to test for existence of the C object part without causing an	497	can be used to test for existence of the C object part without causing an
489	exception.	498	exception.
490		499
		500	=cut
		501
		502	# the following variables are defined in .xs and must not be re-created
		503	our @CB_GLOBAL = (); # registry for all global events
		504	our @CB_ATTACHABLE = (); # registry for all attachables
		505	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		506	our @CB_PLAYER = ();
		507	our @CB_CLIENT = ();
		508	our @CB_TYPE = (); # registry for type (cf-object class) based events
		509	our @CB_MAP = ();
		510
		511	my %attachment;
		512
		513	sub cf::attachable::thawer_merge {
		514	# simply override everything except _meta
		515	local $_[0]{_meta};
		516	%{$_[0]} = %{$_[1]};
		517	}
		518
		519	sub _attach_cb($$$$) {
		520	my ($registry, $event, $prio, $cb) = @_;
		521
		522	use sort 'stable';
		523
		524	$cb = [$prio, $cb];
		525
		526	@{$registry->[$event]} = sort
		527	{ $a->[0] cmp $b->[0] }
		528	@{$registry->[$event] || []}, $cb;
		529	}
		530
		531	# hack
		532	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		533
		534	# attach handles attaching event callbacks
		535	# the only thing the caller has to do is pass the correct
		536	# registry (== where the callback attaches to).
		537	sub _attach {
		538	my ($registry, $klass, @arg) = @_;
		539
		540	my $object_type;
		541	my $prio = 0;
		542	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		543
		544	#TODO: get rid of this hack
		545	if ($attachable_klass{$klass}) {
		546	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		547	}
		548
		549	while (@arg) {
		550	my $type = shift @arg;
		551
		552	if ($type eq "prio") {
		553	$prio = shift @arg;
		554
		555	} elsif ($type eq "type") {
		556	$object_type = shift @arg;
		557	$registry = $CB_TYPE[$object_type] ||= [];
		558
		559	} elsif ($type eq "subtype") {
		560	defined $object_type or Carp::croak "subtype specified without type";
		561	my $object_subtype = shift @arg;
		562	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		563
		564	} elsif ($type eq "package") {
		565	my $pkg = shift @arg;
		566
		567	while (my ($name, $id) = each %cb_id) {
		568	if (my $cb = $pkg->can ($name)) {
		569	_attach_cb $registry, $id, $prio, $cb;
		570	}
		571	}
		572
		573	} elsif (exists $cb_id{$type}) {
		574	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		575
		576	} elsif (ref $type) {
		577	warn "attaching objects not supported, ignoring.\n";
		578
		579	} else {
		580	shift @arg;
		581	warn "attach argument '$type' not supported, ignoring.\n";
		582	}
		583	}
		584	}
		585
		586	sub _object_attach {
		587	my ($obj, $name, %arg) = @_;
		588
		589	return if exists $obj->{_attachment}{$name};
		590
		591	if (my $attach = $attachment{$name}) {
		592	my $registry = $obj->registry;
		593
		594	for (@$attach) {
		595	my ($klass, @attach) = @$_;
		596	_attach $registry, $klass, @attach;
		597	}
		598
		599	$obj->{$name} = \%arg;
		600	} else {
		601	warn "object uses attachment '$name' that is not available, postponing.\n";
		602	}
		603
		604	$obj->{_attachment}{$name} = undef;
		605	}
		606
		607	sub cf::attachable::attach {
		608	if (ref $_[0]) {
		609	_object_attach @_;
		610	} else {
		611	_attach shift->_attach_registry, @_;
		612	}
		613	};
		614
		615	# all those should be optimised
		616	sub cf::attachable::detach {
		617	my ($obj, $name) = @_;
		618
		619	if (ref $obj) {
		620	delete $obj->{_attachment}{$name};
		621	reattach ($obj);
		622	} else {
		623	Carp::croak "cannot, currently, detach class attachments";
		624	}
		625	};
		626
		627	sub cf::attachable::attached {
		628	my ($obj, $name) = @_;
		629
		630	exists $obj->{_attachment}{$name}
		631	}
		632
		633	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		634	eval "#line " . __LINE__ . " 'cf.pm'
		635	sub cf::\L$klass\E::_attach_registry {
		636	(\\\@CB_$klass, KLASS_$klass)
		637	}
		638
		639	sub cf::\L$klass\E::attachment {
		640	my \$name = shift;
		641
		642	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		643	}
		644	";
		645	die if $@;
		646	}
		647
		648	our $override;
		649	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		650
		651	sub override {
		652	$override = 1;
		653	@invoke_results = ();
		654	}
		655
		656	sub do_invoke {
		657	my $event = shift;
		658	my $callbacks = shift;
		659
		660	@invoke_results = ();
		661
		662	local $override;
		663
		664	for (@$callbacks) {
		665	eval { &{$_->[1]} };
		666
		667	if ($@) {
		668	warn "$@";
		669	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		670	override;
		671	}
		672
		673	return 1 if $override;
		674	}
		675
		676	0
		677	}
		678
		679	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		680
		681	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		682
		683	Generate an object-specific event with the given arguments.
		684
		685	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		686	removed in future versions), and there is no public API to access override
		687	results (if you must, access C<@cf::invoke_results> directly).
		688
491	=back	689	=back
492		690
493	=cut	691	=cut
494
495	*cf::object::valid =
496	*cf::player::valid =
497	*cf::client::valid =
498	*cf::map::valid = \&cf::_valid;
499		692
500	#############################################################################	693	#############################################################################
501	# object support	694	# object support
502		695
503	sub instantiate {
504	my ($obj, $data) = @_;
505
506	$data = from_json $data;
507
508	for (@$data) {
509	my ($name, $args) = @$_;
510
511	$obj->attach ($name, %{$args || {} });
512	}
513	}
514
515	# basically do the same as instantiate, without calling instantiate
516	sub reattach {	696	sub reattach {
		697	# basically do the same as instantiate, without calling instantiate
517	my ($obj) = @_;	698	my ($obj) = @_;
		699
		700	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		701
518	my $registry = $obj->registry;	702	my $registry = $obj->registry;
519		703
520	@$registry = ();	704	@$registry = ();
521		705
522	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	706	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
523		707
524	for my $name (keys %{ $obj->{_attachment} || {} }) {	708	for my $name (keys %{ $obj->{_attachment} || {} }) {
525	if (my $attach = $attachment{$name}) {	709	if (my $attach = $attachment{$name}) {
526	for (@$attach) {	710	for (@$attach) {
527	my ($klass, @attach) = @$_;	711	my ($klass, @attach) = @$_;
528	_attach @$registry, $klass, @attach;	712	_attach $registry, $klass, @attach;
529	}	713	}
530	} else {	714	} else {
531	warn "object uses attachment '$name' that is not available, postponing.\n";	715	warn "object uses attachment '$name' that is not available, postponing.\n";
532	}	716	}
533	}	717	}
534	}	718	}
535		719
536	sub object_freezer_save {	720	cf::attachable->attach (
537	my ($filename, $rdata, $objs) = @_;
538
539	if (length $$rdata) {
540	warn sprintf "saving %s (%d,%d)\n",
541	$filename, length $$rdata, scalar @$objs;
542
543	if (open my $fh, ">:raw", "$filename~") {
544	chmod SAVE_MODE, $fh;
545	syswrite $fh, $$rdata;
546	close $fh;
547
548	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
549	chmod SAVE_MODE, $fh;
550	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
551	close $fh;
552	rename "$filename.pst~", "$filename.pst";
553	} else {
554	unlink "$filename.pst";
555	}
556
557	rename "$filename~", $filename;
558	} else {
559	warn "FATAL: $filename~: $!\n";
560	}
561	} else {
562	unlink $filename;
563	unlink "$filename.pst";
564	}
565	}
566
567	sub object_freezer_as_string {
568	my ($rdata, $objs) = @_;
569
570	use Data::Dumper;
571
572	$$rdata . Dumper $objs
573	}
574
575	sub object_thawer_load {
576	my ($filename) = @_;
577
578	local $/;
579
580	my $av;
581
582	#TODO: use sysread etc.
583	if (open my $data, "<:raw:perlio", $filename) {
584	$data = <$data>;
585	if (open my $pst, "<:raw:perlio", "$filename.pst") {
586	$av = eval { (Storable::thaw <$pst>)->{objs} };
587	}
588	return ($data, $av);
589	}
590
591	()
592	}
593
594	attach_to_objects
595	prio => -1000000,	721	prio => -1000000,
		722	on_instantiate => sub {
		723	my ($obj, $data) = @_;
		724
		725	$data = from_json $data;
		726
		727	for (@$data) {
		728	my ($name, $args) = @$_;
		729
		730	$obj->attach ($name, %{$args || {} });
		731	}
		732	},
		733	on_reattach => \&reattach,
596	on_clone => sub {	734	on_clone => sub {
597	my ($src, $dst) = @_;	735	my ($src, $dst) = @_;
598		736
599	@{$dst->registry} = @{$src->registry};	737	@{$dst->registry} = @{$src->registry};
600		738
601	%$dst = %$src;	739	%$dst = %$src;
602		740
603	%{$dst->{_attachment}} = %{$src->{_attachment}}	741	%{$dst->{_attachment}} = %{$src->{_attachment}}
604	if exists $src->{_attachment};	742	if exists $src->{_attachment};
605	},	743	},
606	;	744	);
		745
		746	sub object_freezer_save {
		747	my ($filename, $rdata, $objs) = @_;
		748
		749	sync_job {
		750	if (length $$rdata) {
		751	warn sprintf "saving %s (%d,%d)\n",
		752	$filename, length $$rdata, scalar @$objs;
		753
		754	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		755	chmod SAVE_MODE, $fh;
		756	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		757	aio_fsync $fh;
		758	close $fh;
		759
		760	if (@$objs) {
		761	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		762	chmod SAVE_MODE, $fh;
		763	my $data = Storable::nfreeze { version => 1, objs => $objs };
		764	aio_write $fh, 0, (length $data), $data, 0;
		765	aio_fsync $fh;
		766	close $fh;
		767	aio_rename "$filename.pst~", "$filename.pst";
		768	}
		769	} else {
		770	aio_unlink "$filename.pst";
		771	}
		772
		773	aio_rename "$filename~", $filename;
		774	} else {
		775	warn "FATAL: $filename~: $!\n";
		776	}
		777	} else {
		778	aio_unlink $filename;
		779	aio_unlink "$filename.pst";
		780	}
		781
		782	#d##TODO# nuke non .map-files if exist
		783	if ($filename =~ s/\.map$//) {
		784	aio_unlink $filename;
		785	aio_unlink "$filename.pst";
		786	}
		787	}
		788	}
		789
		790	sub object_freezer_as_string {
		791	my ($rdata, $objs) = @_;
		792
		793	use Data::Dumper;
		794
		795	$$rdata . Dumper $objs
		796	}
		797
		798	sub object_thawer_load {
		799	my ($filename) = @_;
		800
		801	my ($data, $av);
		802
		803	#d#TODO remove .map if file does not exist
		804	aio_stat $filename and $filename =~ s/\.map$//;
		805
		806	(aio_load $filename, $data) >= 0
		807	or return;
		808
		809	unless (aio_stat "$filename.pst") {
		810	(aio_load "$filename.pst", $av) >= 0
		811	or return;
		812	$av = eval { (Storable::thaw $av)->{objs} };
		813	}
		814
		815	warn sprintf "loading %s (%d)\n",
		816	$filename, length $data, scalar @{$av || []};#d#
		817	return ($data, $av);
		818	}
607		819
608	#############################################################################	820	#############################################################################
609	# command handling &c	821	# command handling &c
610		822
611	=item cf::register_command $name => \&callback($ob,$args);	823	=item cf::register_command $name => \&callback($ob,$args);
…		…
634	=cut	846	=cut
635		847
636	sub register_extcmd {	848	sub register_extcmd {
637	my ($name, $cb) = @_;	849	my ($name, $cb) = @_;
638		850
639	my $caller = caller;
640	#warn "registering extcmd '$name' to '$caller'";
641
642	$EXTCMD{$name} = [$cb, $caller];	851	$EXTCMD{$name} = $cb;
643	}	852	}
644		853
645	attach_to_players	854	cf::player->attach (
646	on_command => sub {	855	on_command => sub {
647	my ($pl, $name, $params) = @_;	856	my ($pl, $name, $params) = @_;
648		857
649	my $cb = $COMMAND{$name}	858	my $cb = $COMMAND{$name}
650	or return;	859	or return;
…		…
660		869
661	my $msg = eval { from_json $buf };	870	my $msg = eval { from_json $buf };
662		871
663	if (ref $msg) {	872	if (ref $msg) {
664	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	873	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
665	if (my %reply = $cb->[0]->($pl, $msg)) {	874	if (my %reply = $cb->($pl, $msg)) {
666	$pl->ext_reply ($msg->{msgid}, %reply);	875	$pl->ext_reply ($msg->{msgid}, %reply);
667	}	876	}
668	}	877	}
669	} else {	878	} else {
670	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	879	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
671	}	880	}
672		881
673	cf::override;	882	cf::override;
674	},	883	},
675	;	884	);
676
677	sub register {
678	my ($base, $pkg) = @_;
679
680	#TODO
681	}
682		885
683	sub load_extension {	886	sub load_extension {
684	my ($path) = @_;	887	my ($path) = @_;
685		888
686	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	889	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
687	my $base = $1;	890	my $base = $1;
688	my $pkg = $1;	891	my $pkg = $1;
689	$pkg =~ s/[^[:word:]]/_/g;	892	$pkg =~ s/[^[:word:]]/_/g;
690	$pkg = "ext::$pkg";	893	$pkg = "ext::$pkg";
691		894
692	warn "loading '$path' into '$pkg'\n";	895	warn "... loading '$path' into '$pkg'\n";
693		896
694	open my $fh, "<:utf8", $path	897	open my $fh, "<:utf8", $path
695	or die "$path: $!";	898	or die "$path: $!";
696		899
697	my $source =	900	my $source =
698	"package $pkg; use strict; use utf8;\n"	901	"package $pkg; use strict; use utf8;\n"
699	. "#line 1 \"$path\"\n{\n"	902	. "#line 1 \"$path\"\n{\n"
700	. (do { local $/; <$fh> })	903	. (do { local $/; <$fh> })
701	. "\n};\n1";	904	. "\n};\n1";
702		905
703	eval $source	906	unless (eval $source) {
704	or die $@ ? "$path: $@\n"	907	my $msg = $@ ? "$path: $@\n"
705	: "extension disabled.\n";	908	: "extension disabled.\n";
706		909	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
707	push @exts, $pkg;	910	warn $@;
708	$ext_pkg{$base} = $pkg;	911	warn "mandatory extension failed to load, exiting.\n";
709		912	exit 1;
710	# no strict 'refs';	913	}
711	# @{"$pkg\::ISA"} = ext::;	914	die $@;
712
713	register $base, $pkg;
714	}
715
716	sub unload_extension {
717	my ($pkg) = @_;
718
719	warn "removing extension $pkg\n";
720
721	# remove hooks
722	#TODO
723	# for my $idx (0 .. $#PLUGIN_EVENT) {
724	# delete $hook[$idx]{$pkg};
725	# }	915	}
726		916
727	# remove commands	917	push @EXTS, $pkg;
728	for my $name (keys %COMMAND) {
729	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
730
731	if (@cb) {
732	$COMMAND{$name} = \@cb;
733	} else {
734	delete $COMMAND{$name};
735	}
736	}
737
738	# remove extcmds
739	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
740	delete $EXTCMD{$name};
741	}
742
743	if (my $cb = $pkg->can ("unload")) {
744	eval {
745	$cb->($pkg);
746	1
747	} or warn "$pkg unloaded, but with errors: $@";
748	}
749
750	Symbol::delete_package $pkg;
751	}	918	}
752		919
753	sub load_extensions {	920	sub load_extensions {
754	for my $ext (<$LIBDIR/*.ext>) {	921	for my $ext (<$LIBDIR/*.ext>) {
755	next unless -r $ext;	922	next unless -r $ext;
…		…
759	} or warn "$ext not loaded: $@";	926	} or warn "$ext not loaded: $@";
760	}	927	}
761	}	928	}
762		929
763	#############################################################################	930	#############################################################################
764	# load/save/clean perl data associated with a map
765		931
766	*cf::mapsupport::on_clean = sub {	932	=head2 CORE EXTENSIONS
		933
		934	Functions and methods that extend core crossfire objects.
		935
		936	=cut
		937
		938	package cf::player;
		939
		940	use Coro::AIO;
		941
		942	=head3 cf::player
		943
		944	=over 4
		945
		946	=item cf::player::find $login
		947
		948	Returns the given player object, loading it if necessary (might block).
		949
		950	=cut
		951
		952	sub playerdir($) {
		953	cf::localdir
		954	. "/"
		955	. cf::playerdir
		956	. "/"
		957	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		958	}
		959
		960	sub path($) {
		961	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		962
		963	(playerdir $login) . "/$login.pl"
		964	}
		965
		966	sub find_active($) {
		967	$cf::PLAYER{$_[0]}
		968	and $cf::PLAYER{$_[0]}->active
		969	and $cf::PLAYER{$_[0]}
		970	}
		971
		972	sub exists($) {
		973	my ($login) = @_;
		974
		975	$cf::PLAYER{$login}
		976	or cf::sync_job { !aio_stat path $login }
		977	}
		978
		979	sub find($) {
		980	return $cf::PLAYER{$_[0]} || do {
		981	my $login = $_[0];
		982
		983	my $guard = cf::lock_acquire "user_find:$login";
		984
		985	$cf::PLAYER{$_[0]} || do {
		986	my $pl = load_pl path $login
		987	or return;
		988	$cf::PLAYER{$login} = $pl
		989	}
		990	}
		991	}
		992
		993	sub save($) {
		994	my ($pl) = @_;
		995
		996	return if $pl->{deny_save};
		997
		998	my $path = path $pl;
		999	my $guard = cf::lock_acquire "user_save:$path";
		1000
		1001	return if $pl->{deny_save};
		1002
		1003	aio_mkdir playerdir $pl, 0770;
		1004	$pl->{last_save} = $cf::RUNTIME;
		1005
		1006	$pl->save_pl ($path);
		1007	Coro::cede;
		1008	}
		1009
		1010	sub new($) {
		1011	my ($login) = @_;
		1012
		1013	my $self = create;
		1014
		1015	$self->ob->name ($login);
		1016	$self->{deny_save} = 1;
		1017
		1018	$cf::PLAYER{$login} = $self;
		1019
		1020	$self
		1021	}
		1022
		1023	=item $pl->quit_character
		1024
		1025	Nukes the player without looking back. If logged in, the connection will
		1026	be destroyed. May block for a long time.
		1027
		1028	=cut
		1029
		1030	sub quit_character {
		1031	my ($pl) = @_;
		1032
		1033	$pl->{deny_save} = 1;
		1034	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1035
		1036	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1037	$pl->deactivate;
		1038	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1039	$pl->ns->destroy if $pl->ns;
		1040
		1041	my $path = playerdir $pl;
		1042	my $temp = "$path~$cf::RUNTIME~deleting~";
		1043	aio_rename $path, $temp;
		1044	delete $cf::PLAYER{$pl->ob->name};
		1045	$pl->destroy;
		1046	IO::AIO::aio_rmtree $temp;
		1047	}
		1048
		1049	=item cf::player::list_logins
		1050
		1051	Returns am arrayref of all valid playernames in the system, can take a
		1052	while and may block, so not sync_job-capable, ever.
		1053
		1054	=cut
		1055
		1056	sub list_logins {
		1057	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1058	or return [];
		1059
		1060	my @logins;
		1061
		1062	for my $login (@$dirs) {
		1063	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1064	aio_read $fh, 0, 512, my $buf, 0 or next;
		1065	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1066
		1067	utf8::decode $login;
		1068	push @logins, $login;
		1069	}
		1070
		1071	\@logins
		1072	}
		1073
		1074	=item $player->maps
		1075
		1076	Returns an arrayref of map paths that are private for this
		1077	player. May block.
		1078
		1079	=cut
		1080
		1081	sub maps($) {
		1082	my ($pl) = @_;
		1083
		1084	my $files = aio_readdir playerdir $pl
		1085	or return;
		1086
		1087	my @paths;
		1088
		1089	for (@$files) {
		1090	utf8::decode $_;
		1091	next if /\.(?:pl|pst)$/;
		1092	next unless /^$PATH_SEP/o;
		1093
		1094	push @paths, cf::map::normalise "~" . $pl->ob->name . "/" . $_;
		1095	}
		1096
		1097	\@paths
		1098	}
		1099
		1100	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1101
		1102	Sends an ext reply to the player.
		1103
		1104	=cut
		1105
		1106	sub ext_reply($$$%) {
		1107	my ($self, $id, %msg) = @_;
		1108
		1109	$msg{msgid} = $id;
		1110
		1111	$self->send ("ext " . cf::to_json \%msg);
		1112	}
		1113
		1114	package cf;
		1115
		1116	=back
		1117
		1118
		1119	=head3 cf::map
		1120
		1121	=over 4
		1122
		1123	=cut
		1124
		1125	package cf::map;
		1126
		1127	use Fcntl;
		1128	use Coro::AIO;
		1129
		1130	use overload
		1131	'""' => \&as_string,
		1132	fallback => 1;
		1133
		1134	our $MAX_RESET = 3600;
		1135	our $DEFAULT_RESET = 3000;
		1136
		1137	sub generate_random_map {
		1138	my ($self, $rmp) = @_;
		1139	# mit "rum" bekleckern, nicht
		1140	$self->_create_random_map (
		1141	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1142	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1143	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1144	$rmp->{exit_on_final_map},
		1145	$rmp->{xsize}, $rmp->{ysize},
		1146	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1147	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1148	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1149	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1150	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1151	(cf::region::find $rmp->{region}), $rmp->{custom}
		1152	)
		1153	}
		1154
		1155	=item cf::map->register ($regex, $prio)
		1156
		1157	Register a handler for the map path matching the given regex at the
		1158	givne priority (higher is better, built-in handlers have priority 0, the
		1159	default).
		1160
		1161	=cut
		1162
		1163	sub register {
		1164	my (undef, $regex, $prio) = @_;
		1165	my $pkg = caller;
		1166
		1167	no strict;
		1168	push @{"$pkg\::ISA"}, __PACKAGE__;
		1169
		1170	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1171	}
		1172
		1173	# also paths starting with '/'
		1174	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1175
		1176	sub thawer_merge {
		1177	my ($self, $merge) = @_;
		1178
		1179	# we have to keep some variables in memory intact
		1180	local $self->{path};
		1181	local $self->{load_path};
		1182	local $self->{deny_save};
		1183	local $self->{deny_reset};
		1184
		1185	$self->SUPER::thawer_merge ($merge);
		1186	}
		1187
		1188	sub normalise {
		1189	my ($path, $base) = @_;
		1190
		1191	$path = "$path"; # make sure its a string
		1192
		1193	$path =~ s/\.map$//;
		1194
		1195	# map plan:
		1196	#
		1197	# /! non-realised random map exit (special hack!)
		1198	# {... are special paths that are not being touched
		1199	# ?xxx/... are special absolute paths
		1200	# ?random/... random maps
		1201	# /... normal maps
		1202	# ~user/... per-player map of a specific user
		1203
		1204	$path =~ s/$PATH_SEP/\//go;
		1205
		1206	# treat it as relative path if it starts with
		1207	# something that looks reasonable
		1208	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1209	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1210
		1211	$base =~ s{[^/]+/?$}{};
		1212	$path = "$base/$path";
		1213	}
		1214
		1215	for ($path) {
		1216	redo if s{//}{/};
		1217	redo if s{/\.?/}{/};
		1218	redo if s{/[^/]+/\.\./}{/};
		1219	}
		1220
		1221	$path
		1222	}
		1223
		1224	sub new_from_path {
		1225	my (undef, $path, $base) = @_;
		1226
		1227	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1228
		1229	$path = normalise $path, $base;
		1230
		1231	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1232	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1233	my $self = bless cf::map::new, $pkg;
		1234	$self->{path} = $path; $self->path ($path);
		1235	$self->init; # pass $1 etc.
		1236	return $self;
		1237	}
		1238	}
		1239
		1240	Carp::carp "unable to resolve path '$path' (base '$base').";
		1241	()
		1242	}
		1243
		1244	sub init {
		1245	my ($self) = @_;
		1246
		1247	$self
		1248	}
		1249
		1250	sub as_string {
		1251	my ($self) = @_;
		1252
		1253	"$self->{path}"
		1254	}
		1255
		1256	# the displayed name, this is a one way mapping
		1257	sub visible_name {
		1258	&as_string
		1259	}
		1260
		1261	# the original (read-only) location
		1262	sub load_path {
		1263	my ($self) = @_;
		1264
		1265	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1266	}
		1267
		1268	# the temporary/swap location
		1269	sub save_path {
		1270	my ($self) = @_;
		1271
		1272	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1273	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1274	}
		1275
		1276	# the unique path, undef == no special unique path
		1277	sub uniq_path {
		1278	my ($self) = @_;
		1279
		1280	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1281	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1282	}
		1283
		1284	# and all this just because we cannot iterate over
		1285	# all maps in C++...
		1286	sub change_all_map_light {
		1287	my ($change) = @_;
		1288
		1289	$_->change_map_light ($change)
		1290	for grep $_->outdoor, values %cf::MAP;
		1291	}
		1292
		1293	sub unlink_save {
		1294	my ($self) = @_;
		1295
		1296	utf8::encode (my $save = $self->save_path);
		1297	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1298	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1299
		1300	#d#TODO remove .map and also nuke
		1301	$save =~ s/\.map// or return;#d#
		1302	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
		1303	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
		1304	}
		1305
		1306	sub load_header_from($) {
		1307	my ($self, $path) = @_;
		1308
		1309	utf8::encode $path;
		1310	#aio_open $path, O_RDONLY, 0
		1311	# or return;
		1312
		1313	$self->_load_header ($path)
		1314	or return;
		1315
		1316	$self->{load_path} = $path;
		1317
		1318	1
		1319	}
		1320
		1321	sub load_header_orig {
		1322	my ($self) = @_;
		1323
		1324	$self->load_header_from ($self->load_path)
		1325	}
		1326
		1327	sub load_header_temp {
		1328	my ($self) = @_;
		1329
		1330	$self->load_header_from ($self->save_path)
		1331	}
		1332
		1333	sub prepare_temp {
		1334	my ($self) = @_;
		1335
		1336	$self->last_access ((delete $self->{last_access})
		1337	|| $cf::RUNTIME); #d#
		1338	# safety
		1339	$self->{instantiate_time} = $cf::RUNTIME
		1340	if $self->{instantiate_time} > $cf::RUNTIME;
		1341	}
		1342
		1343	sub prepare_orig {
		1344	my ($self) = @_;
		1345
		1346	$self->{load_original} = 1;
		1347	$self->{instantiate_time} = $cf::RUNTIME;
		1348	$self->last_access ($cf::RUNTIME);
		1349	$self->instantiate;
		1350	}
		1351
		1352	sub load_header {
		1353	my ($self) = @_;
		1354
		1355	if ($self->load_header_temp) {
		1356	$self->prepare_temp;
		1357	} else {
		1358	$self->load_header_orig
		1359	or return;
		1360	$self->prepare_orig;
		1361	}
		1362
		1363	1
		1364	}
		1365
		1366	sub find;
		1367	sub find {
		1368	my ($path, $origin) = @_;
		1369
		1370	$path = normalise $path, $origin && $origin->path;
		1371
		1372	cf::lock_wait "map_find:$path";
		1373
		1374	$cf::MAP{$path} || do {
		1375	my $guard = cf::lock_acquire "map_find:$path";
		1376	my $map = new_from_path cf::map $path
		1377	or return;
		1378
		1379	$map->{last_save} = $cf::RUNTIME;
		1380
		1381	$map->load_header
		1382	or return;
		1383
		1384	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1385	# doing this can freeze the server in a sync job, obviously
		1386	#$cf::WAIT_FOR_TICK->wait;
		1387	$map->reset;
		1388	undef $guard;
		1389	return find $path;
		1390	}
		1391
		1392	$cf::MAP{$path} = $map
		1393	}
		1394	}
		1395
		1396	sub pre_load { }
		1397	sub post_load { }
		1398
		1399	sub load {
		1400	my ($self) = @_;
		1401
		1402	local $self->{deny_reset} = 1; # loading can take a long time
		1403
		1404	my $path = $self->{path};
		1405	my $guard = cf::lock_acquire "map_load:$path";
		1406
		1407	return if $self->in_memory != cf::MAP_SWAPPED;
		1408
		1409	$self->in_memory (cf::MAP_LOADING);
		1410
		1411	$self->alloc;
		1412
		1413	$self->pre_load;
		1414
		1415	$self->_load_objects ($self->{load_path}, 1)
		1416	or return;
		1417
		1418	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1419	if delete $self->{load_original};
		1420
		1421	if (my $uniq = $self->uniq_path) {
		1422	utf8::encode $uniq;
		1423	if (aio_open $uniq, O_RDONLY, 0) {
		1424	$self->clear_unique_items;
		1425	$self->_load_objects ($uniq, 0);
		1426	}
		1427	}
		1428
		1429	Coro::cede;
		1430
		1431	# now do the right thing for maps
		1432	$self->link_multipart_objects;
		1433
		1434	unless ($self->{deny_activate}) {
		1435	$self->decay_objects;
		1436	$self->fix_auto_apply;
		1437	$self->update_buttons;
		1438	Coro::cede;
		1439	$self->set_darkness_map;
		1440	$self->difficulty ($self->estimate_difficulty)
		1441	unless $self->difficulty;
		1442	Coro::cede;
		1443	$self->activate;
		1444	}
		1445
		1446	$self->post_load;
		1447
		1448	$self->in_memory (cf::MAP_IN_MEMORY);
		1449	}
		1450
		1451	sub customise_for {
		1452	my ($self, $ob) = @_;
		1453
		1454	return find "~" . $ob->name . "/" . $self->{path}
		1455	if $self->per_player;
		1456
		1457	$self
		1458	}
		1459
		1460	# find and load all maps in the 3x3 area around a map
		1461	sub load_diag {
767	my ($map) = @_;	1462	my ($map) = @_;
768		1463
769	my $path = $map->tmpname;	1464	my @diag; # diagonal neighbours
770	defined $path or return;
771		1465
772	unlink "$path.pst";	1466	for (0 .. 3) {
773	};	1467	my $neigh = $map->tile_path ($_)
		1468	or next;
		1469	$neigh = find $neigh, $map
		1470	or next;
		1471	$neigh->load;
774		1472
775	attach_to_maps prio => -10000, package => cf::mapsupport::;	1473	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1474	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1475	}
776		1476
777	#############################################################################	1477	for (@diag) {
778	# load/save perl data associated with player->ob objects	1478	my $neigh = find @$_
779		1479	or next;
780	sub all_objects(@) {	1480	$neigh->load;
781	@_, map all_objects ($_->inv), @_	1481	}
782	}	1482	}
783		1483
784	# TODO: compatibility cruft, remove when no longer needed	1484	sub find_sync {
785	attach_to_players	1485	my ($path, $origin) = @_;
786	on_load => sub {
787	my ($pl, $path) = @_;
788		1486
789	for my $o (all_objects $pl->ob) {	1487	cf::sync_job { find $path, $origin }
790	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1488	}
791	$o->set_ob_key_value ("_perl_data");
792		1489
793	%$o = %{ Storable::thaw pack "H*", $value };	1490	sub do_load_sync {
		1491	my ($map) = @_;
		1492
		1493	cf::sync_job { $map->load };
		1494	}
		1495
		1496	our %MAP_PREFETCH;
		1497	our $MAP_PREFETCHER = undef;
		1498
		1499	sub find_async {
		1500	my ($path, $origin) = @_;
		1501
		1502	$path = normalise $path, $origin && $origin->{path};
		1503
		1504	if (my $map = $cf::MAP{$path}) {
		1505	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1506	}
		1507
		1508	undef $MAP_PREFETCH{$path};
		1509	$MAP_PREFETCHER ||= cf::async {
		1510	while (%MAP_PREFETCH) {
		1511	for my $path (keys %MAP_PREFETCH) {
		1512	my $map = find $path
		1513	or next;
		1514	$map->load;
		1515
		1516	delete $MAP_PREFETCH{$path};
794	}	1517	}
795	}	1518	}
		1519	undef $MAP_PREFETCHER;
		1520	};
		1521	$MAP_PREFETCHER->prio (6);
		1522
		1523	()
		1524	}
		1525
		1526	sub save {
		1527	my ($self) = @_;
		1528
		1529	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1530
		1531	$self->{last_save} = $cf::RUNTIME;
		1532
		1533	return unless $self->dirty;
		1534
		1535	my $save = $self->save_path; utf8::encode $save;
		1536	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1537
		1538	$self->{load_path} = $save;
		1539
		1540	return if $self->{deny_save};
		1541
		1542	local $self->{last_access} = $self->last_access;#d#
		1543
		1544	cf::async {
		1545	$_->contr->save for $self->players;
		1546	};
		1547
		1548	if ($uniq) {
		1549	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1550	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1551	} else {
		1552	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
796	},	1553	}
797	;	1554	}
798		1555
799	#############################################################################	1556	sub swap_out {
		1557	my ($self) = @_;
800		1558
801	=head2 CORE EXTENSIONS	1559	# save first because save cedes
		1560	$self->save;
802		1561
803	Functions and methods that extend core crossfire objects.	1562	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1563
		1564	return if $self->players;
		1565	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1566	return if $self->{deny_save};
		1567
		1568	$self->clear;
		1569	$self->in_memory (cf::MAP_SWAPPED);
		1570	}
		1571
		1572	sub reset_at {
		1573	my ($self) = @_;
		1574
		1575	# TODO: safety, remove and allow resettable per-player maps
		1576	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1577	return 1e99 if $self->{deny_reset};
		1578
		1579	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1580	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1581
		1582	$time + $to
		1583	}
		1584
		1585	sub should_reset {
		1586	my ($self) = @_;
		1587
		1588	$self->reset_at <= $cf::RUNTIME
		1589	}
		1590
		1591	sub reset {
		1592	my ($self) = @_;
		1593
		1594	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1595
		1596	return if $self->players;
		1597	return if $self->isa ("ext::map_per_player");#d#
		1598
		1599	warn "resetting map ", $self->path;#d#
		1600
		1601	delete $cf::MAP{$self->path};
		1602
		1603	$self->in_memory (cf::MAP_SWAPPED);
		1604	$self->clear;
		1605
		1606	$_->clear_links_to ($self) for values %cf::MAP;
		1607
		1608	$self->unlink_save;
		1609	$self->destroy;
		1610	}
		1611
		1612	my $nuke_counter = "aaaa";
		1613
		1614	sub nuke {
		1615	my ($self) = @_;
		1616
		1617	delete $cf::MAP{$self->path};
		1618
		1619	$self->unlink_save;
		1620
		1621	bless $self, "cf::map";
		1622	delete $self->{deny_reset};
		1623	$self->{deny_save} = 1;
		1624	$self->reset_timeout (1);
		1625	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1626
		1627	$cf::MAP{$self->path} = $self;
		1628
		1629	$self->reset; # polite request, might not happen
		1630	}
		1631
		1632	=item cf::map::unique_maps
		1633
		1634	Returns an arrayref of paths of all shared maps that have
		1635	instantiated unique items. May block.
		1636
		1637	=cut
		1638
		1639	sub unique_maps() {
		1640	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1641	or return;
		1642
		1643	my @paths;
		1644
		1645	for (@$files) {
		1646	utf8::decode $_;
		1647	next if /\.pst$/;
		1648	next unless /^$PATH_SEP/o;
		1649
		1650	push @paths, cf::map::normalise $_;
		1651	}
		1652
		1653	\@paths
		1654	}
		1655
		1656	package cf;
		1657
		1658	=back
		1659
		1660	=head3 cf::object
		1661
		1662	=cut
		1663
		1664	package cf::object;
804		1665
805	=over 4	1666	=over 4
806		1667
807	=item cf::player::exists $login	1668	=item $ob->inv_recursive
808		1669
809	Returns true when the given account exists.	1670	Returns the inventory of the object _and_ their inventories, recursively.
810		1671
811	=cut	1672	=cut
812		1673
813	sub cf::player::exists($) {	1674	sub inv_recursive_;
814	cf::player::find $_[0]	1675	sub inv_recursive_ {
815	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1676	map { $_, inv_recursive_ $_->inv } @_
816	}	1677	}
		1678
		1679	sub inv_recursive {
		1680	inv_recursive_ inv $_[0]
		1681	}
		1682
		1683	package cf;
		1684
		1685	=back
		1686
		1687	=head3 cf::object::player
		1688
		1689	=over 4
817		1690
818	=item $player_object->reply ($npc, $msg[, $flags])	1691	=item $player_object->reply ($npc, $msg[, $flags])
819		1692
820	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1693	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
821	can be C<undef>. Does the right thing when the player is currently in a	1694	can be C<undef>. Does the right thing when the player is currently in a
…		…
823		1696
824	=cut	1697	=cut
825		1698
826	# rough implementation of a future "reply" method that works	1699	# rough implementation of a future "reply" method that works
827	# with dialog boxes.	1700	# with dialog boxes.
		1701	#TODO: the first argument must go, split into a $npc->reply_to ( method
828	sub cf::object::player::reply($$$;$) {	1702	sub cf::object::player::reply($$$;$) {
829	my ($self, $npc, $msg, $flags) = @_;	1703	my ($self, $npc, $msg, $flags) = @_;
830		1704
831	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1705	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
832		1706
…		…
836	$msg = $npc->name . " says: $msg" if $npc;	1710	$msg = $npc->name . " says: $msg" if $npc;
837	$self->message ($msg, $flags);	1711	$self->message ($msg, $flags);
838	}	1712	}
839	}	1713	}
840		1714
841	=item $player->ext_reply ($msgid, $msgtype, %msg)
842
843	Sends an ext reply to the player.
844
845	=cut
846
847	sub cf::player::ext_reply($$$%) {
848	my ($self, $id, %msg) = @_;
849
850	$msg{msgid} = $id;
851
852	$self->send ("ext " . to_json \%msg);
853	}
854
855	=item $player_object->may ("access")	1715	=item $player_object->may ("access")
856		1716
857	Returns wether the given player is authorized to access resource "access"	1717	Returns wether the given player is authorized to access resource "access"
858	(e.g. "command_wizcast").	1718	(e.g. "command_wizcast").
859		1719
…		…
866	(ref $cf::CFG{"may_$access"}	1726	(ref $cf::CFG{"may_$access"}
867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1727	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
868	: $cf::CFG{"may_$access"})	1728	: $cf::CFG{"may_$access"})
869	}	1729	}
870		1730
871	=cut	1731	=item $player_object->enter_link
872		1732
873	#############################################################################	1733	Freezes the player and moves him/her to a special map (C<{link}>).
		1734
		1735	The player should be reasonably safe there for short amounts of time. You
		1736	I<MUST> call C<leave_link> as soon as possible, though.
		1737
		1738	Will never block.
		1739
		1740	=item $player_object->leave_link ($map, $x, $y)
		1741
		1742	Moves the player out of the special C<{link}> map onto the specified
		1743	map. If the map is not valid (or omitted), the player will be moved back
		1744	to the location he/she was before the call to C<enter_link>, or, if that
		1745	fails, to the emergency map position.
		1746
		1747	Might block.
		1748
		1749	=cut
		1750
		1751	sub link_map {
		1752	unless ($LINK_MAP) {
		1753	$LINK_MAP = cf::map::find "{link}"
		1754	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1755	$LINK_MAP->load;
		1756	}
		1757
		1758	$LINK_MAP
		1759	}
		1760
		1761	sub cf::object::player::enter_link {
		1762	my ($self) = @_;
		1763
		1764	$self->deactivate_recursive;
		1765
		1766	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1767
		1768	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1769	if $self->map;
		1770
		1771	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1772	}
		1773
		1774	sub cf::object::player::leave_link {
		1775	my ($self, $map, $x, $y) = @_;
		1776
		1777	my $link_pos = delete $self->{_link_pos};
		1778
		1779	unless ($map) {
		1780	# restore original map position
		1781	($map, $x, $y) = @{ $link_pos || [] };
		1782	$map = cf::map::find $map;
		1783
		1784	unless ($map) {
		1785	($map, $x, $y) = @$EMERGENCY_POSITION;
		1786	$map = cf::map::find $map
		1787	or die "FATAL: cannot load emergency map\n";
		1788	}
		1789	}
		1790
		1791	($x, $y) = (-1, -1)
		1792	unless (defined $x) && (defined $y);
		1793
		1794	# use -1 or undef as default coordinates, not 0, 0
		1795	($x, $y) = ($map->enter_x, $map->enter_y)
		1796	if $x <=0 && $y <= 0;
		1797
		1798	$map->load;
		1799	$map->load_diag;
		1800
		1801	return unless $self->contr->active;
		1802	$self->activate_recursive;
		1803	$self->enter_map ($map, $x, $y);
		1804	}
		1805
		1806	cf::player->attach (
		1807	on_logout => sub {
		1808	my ($pl) = @_;
		1809
		1810	# abort map switching before logout
		1811	if ($pl->ob->{_link_pos}) {
		1812	cf::sync_job {
		1813	$pl->ob->leave_link
		1814	};
		1815	}
		1816	},
		1817	on_login => sub {
		1818	my ($pl) = @_;
		1819
		1820	# try to abort aborted map switching on player login :)
		1821	# should happen only on crashes
		1822	if ($pl->ob->{_link_pos}) {
		1823	$pl->ob->enter_link;
		1824	(async {
		1825	# we need this sleep as the login has a concurrent enter_exit running
		1826	# and this sleep increases chances of the player not ending up in scorn
		1827	$pl->ob->reply (undef,
		1828	"There was an internal problem at your last logout, "
		1829	. "the server will try to bring you to your intended destination in a second.",
		1830	cf::NDI_RED);
		1831	Coro::Timer::sleep 1;
		1832	$pl->ob->leave_link;
		1833	})->prio (2);
		1834	}
		1835	},
		1836	);
		1837
		1838	=item $player_object->goto ($path, $x, $y)
		1839
		1840	=cut
		1841
		1842	sub cf::object::player::goto {
		1843	my ($self, $path, $x, $y) = @_;
		1844
		1845	$self->enter_link;
		1846
		1847	(async {
		1848	my $map = eval {
		1849	my $map = cf::map::find $path;
		1850	$map = $map->customise_for ($self) if $map;
		1851	$map
		1852	} or
		1853	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1854
		1855	$self->leave_link ($map, $x, $y);
		1856	})->prio (1);
		1857	}
		1858
		1859	=item $player_object->enter_exit ($exit_object)
		1860
		1861	=cut
		1862
		1863	sub parse_random_map_params {
		1864	my ($spec) = @_;
		1865
		1866	my $rmp = { # defaults
		1867	xsize => (cf::rndm 15, 40),
		1868	ysize => (cf::rndm 15, 40),
		1869	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1870	#layout => string,
		1871	};
		1872
		1873	for (split /\n/, $spec) {
		1874	my ($k, $v) = split /\s+/, $_, 2;
		1875
		1876	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1877	}
		1878
		1879	$rmp
		1880	}
		1881
		1882	sub prepare_random_map {
		1883	my ($exit) = @_;
		1884
		1885	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1886
		1887	# all this does is basically replace the /! path by
		1888	# a new random map path (?random/...) with a seed
		1889	# that depends on the exit object
		1890
		1891	my $rmp = parse_random_map_params $exit->msg;
		1892
		1893	if ($exit->map) {
		1894	$rmp->{region} = $exit->region->name;
		1895	$rmp->{origin_map} = $exit->map->path;
		1896	$rmp->{origin_x} = $exit->x;
		1897	$rmp->{origin_y} = $exit->y;
		1898	}
		1899
		1900	$rmp->{random_seed} ||= $exit->random_seed;
		1901
		1902	my $data = cf::to_json $rmp;
		1903	my $md5 = Digest::MD5::md5_hex $data;
		1904	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1905
		1906	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1907	aio_write $fh, 0, (length $data), $data, 0;
		1908	undef $fh;
		1909	aio_rename "$meta~", $meta;
		1910
		1911	$exit->slaying ("?random/$md5");
		1912	$exit->msg (undef);
		1913	}
		1914	}
		1915
		1916	sub cf::object::player::enter_exit {
		1917	my ($self, $exit) = @_;
		1918
		1919	return unless $self->type == cf::PLAYER;
		1920
		1921	if ($exit->slaying eq "/!") {
		1922	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1923	cf::sync_job { prepare_random_map $exit };
		1924	}
		1925
		1926	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1927	my $hp = $exit->stats->hp;
		1928	my $sp = $exit->stats->sp;
		1929
		1930	$self->enter_link;
		1931
		1932	(async {
		1933	$self->deactivate_recursive; # just to be sure
		1934	unless (eval {
		1935	$self->goto ($slaying, $hp, $sp);
		1936
		1937	1;
		1938	}) {
		1939	$self->message ("Something went wrong deep within the crossfire server. "
		1940	. "I'll try to bring you back to the map you were before. "
		1941	. "Please report this to the dungeon master!",
		1942	cf::NDI_UNIQUE | cf::NDI_RED);
		1943
		1944	warn "ERROR in enter_exit: $@";
		1945	$self->leave_link;
		1946	}
		1947	})->prio (1);
		1948	}
		1949
		1950	=head3 cf::client
		1951
		1952	=over 4
		1953
		1954	=item $client->send_drawinfo ($text, $flags)
		1955
		1956	Sends a drawinfo packet to the client. Circumvents output buffering so
		1957	should not be used under normal circumstances.
		1958
		1959	=cut
		1960
		1961	sub cf::client::send_drawinfo {
		1962	my ($self, $text, $flags) = @_;
		1963
		1964	utf8::encode $text;
		1965	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1966	}
		1967
		1968
		1969	=item $success = $client->query ($flags, "text", \&cb)
		1970
		1971	Queues a query to the client, calling the given callback with
		1972	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1973	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1974
		1975	Queries can fail, so check the return code. Or don't, as queries will become
		1976	reliable at some point in the future.
		1977
		1978	=cut
		1979
		1980	sub cf::client::query {
		1981	my ($self, $flags, $text, $cb) = @_;
		1982
		1983	return unless $self->state == ST_PLAYING
		1984	|| $self->state == ST_SETUP
		1985	|| $self->state == ST_CUSTOM;
		1986
		1987	$self->state (ST_CUSTOM);
		1988
		1989	utf8::encode $text;
		1990	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1991
		1992	$self->send_packet ($self->{query_queue}[0][0])
		1993	if @{ $self->{query_queue} } == 1;
		1994	}
		1995
		1996	cf::client->attach (
		1997	on_reply => sub {
		1998	my ($ns, $msg) = @_;
		1999
		2000	# this weird shuffling is so that direct followup queries
		2001	# get handled first
		2002	my $queue = delete $ns->{query_queue}
		2003	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2004
		2005	(shift @$queue)->[1]->($msg);
		2006
		2007	push @{ $ns->{query_queue} }, @$queue;
		2008
		2009	if (@{ $ns->{query_queue} } == @$queue) {
		2010	if (@$queue) {
		2011	$ns->send_packet ($ns->{query_queue}[0][0]);
		2012	} else {
		2013	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2014	}
		2015	}
		2016	},
		2017	);
		2018
		2019	=item $client->async (\&cb)
		2020
		2021	Create a new coroutine, running the specified callback. The coroutine will
		2022	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2023	or loss of connection).
		2024
		2025	=cut
		2026
		2027	sub cf::client::async {
		2028	my ($self, $cb) = @_;
		2029
		2030	my $coro = &Coro::async ($cb);
		2031
		2032	$coro->on_destroy (sub {
		2033	delete $self->{_coro}{$coro+0};
		2034	});
		2035
		2036	$self->{_coro}{$coro+0} = $coro;
		2037
		2038	$coro
		2039	}
		2040
		2041	cf::client->attach (
		2042	on_destroy => sub {
		2043	my ($ns) = @_;
		2044
		2045	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2046	},
		2047	);
		2048
		2049	=back
		2050
874		2051
875	=head2 SAFE SCRIPTING	2052	=head2 SAFE SCRIPTING
876		2053
877	Functions that provide a safe environment to compile and execute	2054	Functions that provide a safe environment to compile and execute
878	snippets of perl code without them endangering the safety of the server	2055	snippets of perl code without them endangering the safety of the server
…		…
1030		2207
1031	{	2208	{
1032	my $path = cf::localdir . "/database.pst";	2209	my $path = cf::localdir . "/database.pst";
1033		2210
1034	sub db_load() {	2211	sub db_load() {
1035	warn "loading database $path\n";#d# remove later
1036	$DB = stat $path ? Storable::retrieve $path : { };	2212	$DB = stat $path ? Storable::retrieve $path : { };
1037	}	2213	}
1038		2214
1039	my $pid;	2215	my $pid;
1040		2216
1041	sub db_save() {	2217	sub db_save() {
1042	warn "saving database $path\n";#d# remove later
1043	waitpid $pid, 0 if $pid;	2218	waitpid $pid, 0 if $pid;
1044	if (0 == ($pid = fork)) {	2219	if (0 == ($pid = fork)) {
1045	$DB->{_meta}{version} = 1;	2220	$DB->{_meta}{version} = 1;
1046	Storable::nstore $DB, "$path~";	2221	Storable::nstore $DB, "$path~";
1047	rename "$path~", $path;	2222	rename "$path~", $path;
…		…
1054	sub db_sync() {	2229	sub db_sync() {
1055	db_save if $dirty;	2230	db_save if $dirty;
1056	undef $dirty;	2231	undef $dirty;
1057	}	2232	}
1058		2233
1059	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {	2234	my $idle = Event->idle (
1060	db_sync;	2235	reentrant => 0,
		2236	min => 10,
		2237	max => 20,
		2238	repeat => 0,
		2239	data => WF_AUTOCANCEL,
		2240	cb => \&db_sync,
1061	});	2241	);
1062		2242
1063	sub db_dirty() {	2243	sub db_dirty() {
1064	$dirty = 1;	2244	$dirty = 1;
1065	$idle->start;	2245	$idle->start;
1066	}	2246	}
…		…
1078	$DB->{$_[0]} = $_[1];	2258	$DB->{$_[0]} = $_[1];
1079	}	2259	}
1080	db_dirty;	2260	db_dirty;
1081	}	2261	}
1082		2262
1083	attach_global	2263	cf::global->attach (
1084	prio => 10000,	2264	prio => 10000,
1085	on_cleanup => sub {	2265	on_cleanup => sub {
1086	db_sync;	2266	db_sync;
1087	},	2267	},
1088	;	2268	);
1089	}	2269	}
1090		2270
1091	#############################################################################	2271	#############################################################################
1092	# the server's main()	2272	# the server's main()
1093		2273
…		…
1095	open my $fh, "<:utf8", cf::confdir . "/config"	2275	open my $fh, "<:utf8", cf::confdir . "/config"
1096	or return;	2276	or return;
1097		2277
1098	local $/;	2278	local $/;
1099	*CFG = YAML::Syck::Load <$fh>;	2279	*CFG = YAML::Syck::Load <$fh>;
		2280
		2281	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2282
		2283	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2284	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2285
		2286	if (exists $CFG{mlockall}) {
		2287	eval {
		2288	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2289	and die "WARNING: m(un)lockall failed: $!\n";
		2290	};
		2291	warn $@ if $@;
		2292	}
1100	}	2293	}
1101		2294
1102	sub main {	2295	sub main {
		2296	# we must not ever block the main coroutine
		2297	local $Coro::idle = sub {
		2298	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2299	(async {
		2300	Event::one_event;
		2301	})->prio (Coro::PRIO_MAX);
		2302	};
		2303
1103	cfg_load;	2304	cfg_load;
1104	db_load;	2305	db_load;
1105	load_extensions;	2306	load_extensions;
		2307
		2308	$TICK_WATCHER->start;
1106	Event::loop;	2309	Event::loop;
1107	}	2310	}
1108		2311
1109	#############################################################################	2312	#############################################################################
1110	# initialisation	2313	# initialisation and cleanup
1111		2314
		2315	# install some emergency cleanup handlers
		2316	BEGIN {
		2317	for my $signal (qw(INT HUP TERM)) {
		2318	Event->signal (
		2319	reentrant => 0,
		2320	data => WF_AUTOCANCEL,
		2321	signal => $signal,
		2322	prio => 0,
		2323	cb => sub {
		2324	cf::cleanup "SIG$signal";
		2325	},
		2326	);
		2327	}
		2328	}
		2329
		2330	sub emergency_save() {
		2331	my $freeze_guard = cf::freeze_mainloop;
		2332
		2333	warn "enter emergency perl save\n";
		2334
		2335	cf::sync_job {
		2336	# use a peculiar iteration method to avoid tripping on perl
		2337	# refcount bugs in for. also avoids problems with players
		2338	# and maps saved/destroyed asynchronously.
		2339	warn "begin emergency player save\n";
		2340	for my $login (keys %cf::PLAYER) {
		2341	my $pl = $cf::PLAYER{$login} or next;
		2342	$pl->valid or next;
		2343	$pl->save;
		2344	}
		2345	warn "end emergency player save\n";
		2346
		2347	warn "begin emergency map save\n";
		2348	for my $path (keys %cf::MAP) {
		2349	my $map = $cf::MAP{$path} or next;
		2350	$map->valid or next;
		2351	$map->save;
		2352	}
		2353	warn "end emergency map save\n";
		2354	};
		2355
		2356	warn "leave emergency perl save\n";
		2357	}
		2358
1112	sub _perl_reload(&) {	2359	sub reload() {
1113	my ($msg) = @_;	2360	# can/must only be called in main
		2361	if ($Coro::current != $Coro::main) {
		2362	warn "can only reload from main coroutine";
		2363	return;
		2364	}
1114		2365
1115	$msg->("reloading...");	2366	warn "reloading...";
		2367
		2368	warn "cancelling server ticker";
		2369	$TICK_WATCHER->cancel;
		2370
		2371	cf::emergency_save;
1116		2372
1117	eval {	2373	eval {
1118	# cancel all watchers	2374	# if anything goes wrong in here, we should simply crash as we already saved
		2375
		2376	warn "syncing database to disk";
		2377	cf::db_sync;
		2378
		2379	warn "cancelling all WF_AUTOCANCEL watchers";
1119	for (Event::all_watchers) {	2380	for (Event::all_watchers) {
1120	$_->cancel if $_->data & WF_AUTOCANCEL;	2381	$_->cancel if $_->data & WF_AUTOCANCEL;
1121	}	2382	}
1122		2383
1123	# unload all extensions	2384	warn "flushing outstanding aio requests";
1124	for (@exts) {	2385	for (;;) {
1125	$msg->("unloading <$_>");	2386	IO::AIO::flush;
1126	unload_extension $_;	2387	Coro::cede;
		2388	last unless IO::AIO::nreqs;
		2389	warn "iterate...";
		2390	}
		2391
		2392	warn "cancelling all extension coros";
		2393	$_->cancel for values %EXT_CORO;
		2394	%EXT_CORO = ();
		2395
		2396	warn "removing commands";
		2397	%COMMAND = ();
		2398
		2399	warn "removing ext commands";
		2400	%EXTCMD = ();
		2401
		2402	warn "unloading/nuking all extensions";
		2403	for my $pkg (@EXTS) {
		2404	warn "... unloading $pkg";
		2405
		2406	if (my $cb = $pkg->can ("unload")) {
		2407	eval {
		2408	$cb->($pkg);
		2409	1
		2410	} or warn "$pkg unloaded, but with errors: $@";
1127	}	2411	}
1128		2412
		2413	warn "... nuking $pkg";
		2414	Symbol::delete_package $pkg;
		2415	}
		2416
1129	# unload all modules loaded from $LIBDIR	2417	warn "unloading all perl modules loaded from $LIBDIR";
1130	while (my ($k, $v) = each %INC) {	2418	while (my ($k, $v) = each %INC) {
1131	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2419	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1132		2420
1133	$msg->("removing <$k>");	2421	warn "... unloading $k";
1134	delete $INC{$k};	2422	delete $INC{$k};
1135		2423
1136	$k =~ s/\.pm$//;	2424	$k =~ s/\.pm$//;
1137	$k =~ s/\//::/g;	2425	$k =~ s/\//::/g;
1138		2426
…		…
1141	}	2429	}
1142		2430
1143	Symbol::delete_package $k;	2431	Symbol::delete_package $k;
1144	}	2432	}
1145		2433
1146	# sync database to disk
1147	cf::db_sync;
1148
1149	# get rid of safe::, as good as possible	2434	warn "getting rid of safe::, as good as possible";
1150	Symbol::delete_package "safe::$_"	2435	Symbol::delete_package "safe::$_"
1151	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2436	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1152		2437
1153	# remove register_script_function callbacks
1154	# TODO
1155
1156	# unload cf.pm "a bit"	2438	warn "unloading cf.pm \"a bit\"";
1157	delete $INC{"cf.pm"};	2439	delete $INC{"cf.pm"};
1158		2440
1159	# don't, removes xs symbols, too,	2441	# don't, removes xs symbols, too,
1160	# and global variables created in xs	2442	# and global variables created in xs
1161	#Symbol::delete_package __PACKAGE__;	2443	#Symbol::delete_package __PACKAGE__;
1162		2444
1163	# reload cf.pm	2445	warn "unload completed, starting to reload now";
		2446
1164	$msg->("reloading cf.pm");	2447	warn "reloading cf.pm";
1165	require cf;	2448	require cf;
		2449	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1166		2450
1167	# load config and database again	2451	warn "loading config and database again";
1168	cf::cfg_load;	2452	cf::cfg_load;
1169	cf::db_load;	2453	cf::db_load;
1170		2454
1171	# load extensions	2455	warn "loading extensions";
1172	$msg->("load extensions");
1173	cf::load_extensions;	2456	cf::load_extensions;
1174		2457
1175	# reattach attachments to objects	2458	warn "reattaching attachments to objects/players";
1176	$msg->("reattach");
1177	_global_reattach;	2459	_global_reattach;
		2460	warn "reattaching attachments to maps";
		2461	reattach $_ for values %MAP;
		2462
		2463	warn "restarting server ticker";
		2464
		2465	$TICK_WATCHER->start;
1178	};	2466	};
1179	$msg->($@) if $@;
1180		2467
1181	$msg->("reloaded");	2468	if ($@) {
		2469	warn $@;
		2470	warn "error while reloading, exiting.";
		2471	exit 1;
		2472	}
		2473
		2474	warn "reloaded";
1182	};	2475	};
1183		2476
1184	sub perl_reload() {	2477	our $RELOAD_WATCHER; # used only during reload
1185	_perl_reload {
1186	warn $_[0];
1187	print "$_[0]\n";
1188	};
1189	}
1190		2478
1191	register "<global>", __PACKAGE__;
1192
1193	register_command "perl-reload" => sub {	2479	register_command "reload" => sub {
1194	my ($who, $arg) = @_;	2480	my ($who, $arg) = @_;
1195		2481
1196	if ($who->flag (FLAG_WIZ)) {	2482	if ($who->flag (FLAG_WIZ)) {
1197	_perl_reload {	2483	$who->message ("reloading server.");
1198	warn $_[0];	2484
1199	$who->message ($_[0]);	2485	# doing reload synchronously and two reloads happen back-to-back,
		2486	# coro crashes during coro_state_free->destroy here.
		2487
		2488	$RELOAD_WATCHER ||= Event->timer (
		2489	reentrant => 0,
		2490	after => 0,
		2491	data => WF_AUTOCANCEL,
		2492	cb => sub {
		2493	reload;
		2494	undef $RELOAD_WATCHER;
		2495	},
1200	};	2496	);
1201	}	2497	}
1202	};	2498	};
1203		2499
1204	unshift @INC, $LIBDIR;	2500	unshift @INC, $LIBDIR;
1205		2501
		2502	my $bug_warning = 0;
		2503
1206	$TICK_WATCHER = Event->timer (	2504	$TICK_WATCHER = Event->timer (
		2505	reentrant => 0,
		2506	parked => 1,
1207	prio => 0,	2507	prio => 0,
1208	at => $NEXT_TICK || 1,	2508	at => $NEXT_TICK || $TICK,
1209	data => WF_AUTOCANCEL,	2509	data => WF_AUTOCANCEL,
1210	cb => sub {	2510	cb => sub {
		2511	if ($Coro::current != $Coro::main) {
		2512	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2513	unless ++$bug_warning > 10;
		2514	return;
		2515	}
		2516
		2517	$NOW = Event::time;
		2518
1211	cf::server_tick; # one server iteration	2519	cf::server_tick; # one server iteration
1212		2520	$RUNTIME += $TICK;
1213	my $NOW = Event::time;
1214	$NEXT_TICK += $TICK;	2521	$NEXT_TICK += $TICK;
1215		2522
		2523	$WAIT_FOR_TICK->broadcast;
		2524	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2525
		2526	Event::sweep;
		2527	Coro::cede_notself;
		2528
		2529	# my $AFTER = Event::time;
		2530	# warn $AFTER - $NOW;#d#
		2531
1216	# if we are delayed by four ticks or more, skip them all	2532	# if we are delayed by four ticks or more, skip them all
1217	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2533	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1218		2534
1219	$TICK_WATCHER->at ($NEXT_TICK);	2535	$TICK_WATCHER->at ($NEXT_TICK);
1220	$TICK_WATCHER->start;	2536	$TICK_WATCHER->start;
1221	},	2537	},
1222	);	2538	);
1223		2539
1224	IO::AIO::max_poll_time $TICK * 0.2;	2540	IO::AIO::max_poll_time $TICK * 0.1;
1225		2541
		2542	undef $Coro::AIO::WATCHER;
		2543	$AIO_POLL_WATCHER = Event->io (
		2544	reentrant => 0,
1226	Event->io (fd => IO::AIO::poll_fileno,	2545	fd => IO::AIO::poll_fileno,
1227	poll => 'r',	2546	poll => 'r',
1228	prio => 5,	2547	prio => 6,
1229	data => WF_AUTOCANCEL,	2548	data => WF_AUTOCANCEL,
1230	cb => \&IO::AIO::poll_cb);	2549	cb => \&IO::AIO::poll_cb,
		2550	);
		2551
		2552	$WRITE_RUNTIME_WATCHER = Event->timer (
		2553	reentrant => 0,
		2554	data => WF_AUTOCANCEL,
		2555	after => 1,
		2556	interval => 10,
		2557	prio => 6, # keep it lowest so it acts like a watchdog
		2558	cb => Coro::unblock_sub {
		2559	write_runtime
		2560	or warn "ERROR: unable to write runtime file: $!";
		2561	},
		2562	);
		2563
		2564	END { cf::emergency_save }
1231		2565
1232	1	2566	1
1233		2567

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