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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.83 by root, Mon Dec 11 01:30:41 2006 UTC vs.
Revision 1.194 by root, Wed Jan 24 22:42:49 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		35
21	_init_vars;
22
23	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
24	our @EVENT;	44	our @EVENT;
25	our $LIBDIR = maps_directory "perl";	45	our $LIBDIR = datadir . "/ext";
26		46
27	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
28	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
29	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
30		53
31	our %CFG;	54	our %CFG;
32		55
33	our $uptime;#d#	56	our $UPTIME; $UPTIME ||= time;
34	our $UPTIME;	57	our $RUNTIME;
35	$UPTIME ||= $uptime;#d#	58
36	$UPTIME ||= time;	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;
37		87
38	#############################################################################	88	#############################################################################
39		89
40	=head2 GLOBAL VARIABLES	90	=head2 GLOBAL VARIABLES
41		91
42	=over 4	92	=over 4
43		93
44	=item $cf::UPTIME	94	=item $cf::UPTIME
45		95
46	The timestamp of the server start (so not actually an uptime).	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.
47		102
48	=item $cf::LIBDIR	103	=item $cf::LIBDIR
49		104
50	The perl library directory, where extensions and cf-specific modules can	105	The perl library directory, where extensions and cf-specific modules can
51	be found. It will be added to C<@INC> automatically.	106	be found. It will be added to C<@INC> automatically.
52		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
53	=item $cf::TICK	112	=item $cf::TICK
54		113
55	The interval between server ticks, in seconds.	114	The interval between server ticks, in seconds.
56		115
57	=item %cf::CFG	116	=item %cf::CFG
58		117
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	118	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	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.
61		127
62	=back	128	=back
63		129
64	=cut	130	=cut
65		131
66	BEGIN {	132	BEGIN {
67	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
69	$msg .= "\n"	137	$msg .= "\n"
70	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
71		139
72	print STDERR "cfperl: $msg";
73	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
74	};	141	};
75	}	142	}
76		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';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		150
79	# 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
80	# within the Safe compartment.	152	# within the Safe compartment.
81	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
82	no strict 'refs';	160	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	162	}
85		163
86	$Event::DIED = sub {	164	$Event::DIED = sub {
87	warn "error in event callback: @_";	165	warn "error in event callback: @_";
88	};	166	};
89		167
90	my %ext_pkg;
91	my @exts;
92	my @hook;
93	my %command;
94	my %extcmd;
95
96	=head2 UTILITY FUNCTIONS	168	=head2 UTILITY FUNCTIONS
97		169
98	=over 4	170	=over 4
99		171
		172	=item dumpval $ref
		173
100	=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	}
101		194
102	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
103		196
104	=item $ref = cf::from_json $json	197	=item $ref = cf::from_json $json
105		198
…		…
121	sub to_json($) {	214	sub to_json($) {
122	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
123	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
124	}	217	}
125		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
126	=back	373	=back
127		374
128	=cut	375	=cut
129		376
130	#############################################################################	377	#############################################################################
131		378
132	=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+).
133		388
134	=over 4	389	=over 4
135		390
136	=item $object->attach ($attachment, key => $value...)
137
138	=item $object->detach ($attachment)
139
140	Attach/detach a pre-registered attachment to an object.
141
142	=item $player->attach ($attachment, key => $value...)
143
144	=item $player->detach ($attachment)
145
146	Attach/detach a pre-registered attachment to a player.
147
148	=item $map->attach ($attachment, key => $value...)	391	=item $attachable->attach ($attachment, key => $value...)
149		392
150	=item $map->detach ($attachment)	393	=item $attachable->detach ($attachment)
151		394
152	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.
153		397
154	=item $bool = $object->attached ($name)	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
155		400
156	=item $bool = $player->attached ($name)	401	$obj->attach (minesweeper => width => 10, height => 10);
157		402
158	=item $bool = $map->attached ($name)	403	=item $bool = $attachable->attached ($name)
159		404
160	Checks wether the named attachment is currently attached to the object.	405	Checks wether the named attachment is currently attached to the object.
161		406
162	=item cf::attach_global ...	407	=item cf::CLASS->attach ...
163		408
164	Attach handlers for global events.	409	=item cf::CLASS->detach ...
165		410
166	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
167	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:
168		445
169	=over 4	446	=over 4
170		447
171	=item prio => $number	448	=item prio => $number
172		449
…		…
174	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
175	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
176	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
177	unless you know what you are doing.	454	unless you know what you are doing.
178		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
179	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
180		463
181	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
182	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
183	handlers are recognised generally depends on the type of object these	466	handlers are recognised generally depends on the type of object these
…		…
192	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
193	object/class are recognised.	476	object/class are recognised.
194		477
195	=back	478	=back
196		479
197	=item cf::attach_to_type $object_type, $subtype, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
198		482
199	Attach handlers for a specific object type (e.g. TRANSPORT) and	483	cf::object::attachment sockpuppet =>
200	subtype. If C<$subtype> is zero or undef, matches all objects of the given	484	on_skill_attack => sub {
201	type.	485	my ($self, $victim) = @_;
202		486	...
203	=item cf::attach_to_objects ...
204
205	Attach handlers to all objects. Do not use this except for debugging or
206	very rare events, as handlers are (obviously) called for I<all> objects in
207	the game.
208
209	=item cf::attach_to_players ...
210
211	Attach handlers to all players.
212
213	=item cf::attach_to_maps ...
214
215	Attach handlers to all maps.
216
217	=item cf:register_attachment $name, ...
218
219	Register an attachment by name through which objects can refer to this
220	attachment.
221
222	=item cf:register_player_attachment $name, ...
223
224	Register an attachment by name through which players can refer to this
225	attachment.
226
227	=item cf:register_map_attachment $name, ...
228
229	Register an attachment by name through which maps can refer to this
230	attachment.
231
232	=cut
233
234	# the following variables are defined in .xs and must not be re-created
235	our @CB_GLOBAL = (); # registry for all global events
236	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
237	our @CB_PLAYER = ();
238	our @CB_TYPE = (); # registry for type (cf-object class) based events
239	our @CB_MAP = ();
240
241	my %attachment;
242
243	sub _attach_cb($\%$$$) {
244	my ($registry, $undo, $event, $prio, $cb) = @_;
245
246	use sort 'stable';
247
248	$cb = [$prio, $cb];
249
250	@{$registry->[$event]} = sort
251	{ $a->[0] cmp $b->[0] }
252	@{$registry->[$event] || []}, $cb;
253
254	push @{$undo->{cb}}, [$event, $cb];
255	}
256
257	# attach handles attaching event callbacks
258	# the only thing the caller has to do is pass the correct
259	# registry (== where the callback attaches to).
260	sub _attach(\@$@) {
261	my ($registry, $klass, @arg) = @_;
262
263	my $prio = 0;
264
265	my %undo = (
266	registry => $registry,
267	cb => [],
268	);
269
270	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
271
272	while (@arg) {
273	my $type = shift @arg;
274
275	if ($type eq "prio") {
276	$prio = shift @arg;
277
278	} elsif ($type eq "package") {
279	my $pkg = shift @arg;
280
281	while (my ($name, $id) = each %cb_id) {
282	if (my $cb = $pkg->can ($name)) {
283	_attach_cb $registry, %undo, $id, $prio, $cb;
284	}
285	}	487	}
286
287	} elsif (exists $cb_id{$type}) {
288	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
289
290	} elsif (ref $type) {
291	warn "attaching objects not supported, ignoring.\n";
292
293	} else {
294	shift @arg;
295	warn "attach argument '$type' not supported, ignoring.\n";
296	}
297	}
298
299	\%undo
300	}
301
302	sub _attach_attachment {
303	my ($obj, $name, %arg) = @_;
304
305	return if exists $obj->{_attachment}{$name};
306
307	my $res;
308
309	if (my $attach = $attachment{$name}) {
310	my $registry = $obj->registry;
311
312	for (@$attach) {
313	my ($klass, @attach) = @$_;
314	$res = _attach @$registry, $klass, @attach;
315	}
316
317	$obj->{$name} = \%arg;
318	} else {
319	warn "object uses attachment '$name' that is not available, postponing.\n";
320	}
321
322	$obj->{_attachment}{$name} = undef;
323
324	$res->{attachment} = $name;
325	$res
326	}
327
328	*cf::object::attach =
329	*cf::player::attach =
330	*cf::map::attach = sub {
331	my ($obj, $name, %arg) = @_;
332
333	_attach_attachment $obj, $name, %arg;
334	};
335
336	# all those should be optimised
337	*cf::object::detach =
338	*cf::player::detach =
339	*cf::map::detach = sub {
340	my ($obj, $name) = @_;
341
342	delete $obj->{_attachment}{$name};
343	reattach ($obj);
344	};
345
346	*cf::object::attached =
347	*cf::player::attached =
348	*cf::map::attached = sub {
349	my ($obj, $name) = @_;
350
351	exists $obj->{_attachment}{$name}
352	};
353
354	sub attach_global {
355	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
356	}
357
358	sub attach_to_type {
359	my $type = shift;
360	my $subtype = shift;
361
362	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
363	}
364
365	sub attach_to_objects {
366	_attach @CB_OBJECT, KLASS_OBJECT, @_
367	}
368
369	sub attach_to_players {
370	_attach @CB_PLAYER, KLASS_PLAYER, @_
371	}
372
373	sub attach_to_maps {
374	_attach @CB_MAP, KLASS_MAP, @_
375	}
376
377	sub register_attachment {
378	my $name = shift;
379
380	$attachment{$name} = [[KLASS_OBJECT, @_]];
381	}
382
383	sub register_player_attachment {
384	my $name = shift;
385
386	$attachment{$name} = [[KLASS_PLAYER, @_]];
387	}
388
389	sub register_map_attachment {
390	my $name = shift;
391
392	$attachment{$name} = [[KLASS_MAP, @_]];
393	}
394
395	our $override;
396	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
397
398	sub override {
399	$override = 1;
400	@invoke_results = ();
401	}
402
403	sub do_invoke {
404	my $event = shift;
405	my $callbacks = shift;
406
407	@invoke_results = ();
408
409	local $override;
410
411	for (@$callbacks) {
412	eval { &{$_->[1]} };
413
414	if ($@) {
415	warn "$@";
416	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
417	override;
418	}
419
420	return 1 if $override;
421	}
422
423	0	488	}
424	}
425		489
426	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	490	=item $attachable->valid
427
428	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
429
430	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
431
432	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
433
434	Generate a global/object/player/map-specific event with the given arguments.
435
436	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
437	removed in future versions), and there is no public API to access override
438	results (if you must, access C<@cf::invoke_results> directly).
439
440	=back
441
442	=cut
443
444	#############################################################################
445
446	=head2 METHODS VALID FOR ALL CORE OBJECTS
447
448	=over 4
449
450	=item $object->valid, $player->valid, $map->valid
451		491
452	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
453	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
454	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
455	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
456	exception.	496	exception.
457		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
458	=back	687	=back
459		688
460	=cut	689	=cut
461
462	*cf::object::valid =
463	*cf::player::valid =
464	*cf::map::valid = \&cf::_valid;
465		690
466	#############################################################################	691	#############################################################################
467	# object support	692	# object support
468		693
469	sub instantiate {
470	my ($obj, $data) = @_;
471
472	$data = from_json $data;
473
474	for (@$data) {
475	my ($name, $args) = @$_;
476
477	$obj->attach ($name, %{$args || {} });
478	}
479	}
480
481	# basically do the same as instantiate, without calling instantiate
482	sub reattach {	694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
483	my ($obj) = @_;	696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
484	my $registry = $obj->registry;	700	my $registry = $obj->registry;
485		701
486	@$registry = ();	702	@$registry = ();
487		703
488	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
489		705
490	for my $name (keys %{ $obj->{_attachment} || {} }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
491	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
492	for (@$attach) {	708	for (@$attach) {
493	my ($klass, @attach) = @$_;	709	my ($klass, @attach) = @$_;
494	_attach @$registry, $klass, @attach;	710	_attach $registry, $klass, @attach;
495	}	711	}
496	} else {	712	} else {
497	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
498	}	714	}
499	}	715	}
500	}	716	}
501		717
502	sub object_freezer_save {	718	cf::attachable->attach (
503	my ($filename, $rdata, $objs) = @_;
504
505	if (length $$rdata) {
506	warn sprintf "saving %s (%d,%d)\n",
507	$filename, length $$rdata, scalar @$objs;
508
509	if (open my $fh, ">:raw", "$filename~") {
510	chmod SAVE_MODE, $fh;
511	syswrite $fh, $$rdata;
512	close $fh;
513
514	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
517	close $fh;
518	rename "$filename.pst~", "$filename.pst";
519	} else {
520	unlink "$filename.pst";
521	}
522
523	rename "$filename~", $filename;
524	} else {
525	warn "FATAL: $filename~: $!\n";
526	}
527	} else {
528	unlink $filename;
529	unlink "$filename.pst";
530	}
531	}
532
533	sub object_freezer_as_string {
534	my ($rdata, $objs) = @_;
535
536	use Data::Dumper;
537
538	$$rdata . Dumper $objs
539	}
540
541	sub object_thawer_load {
542	my ($filename) = @_;
543
544	local $/;
545
546	my $av;
547
548	#TODO: use sysread etc.
549	if (open my $data, "<:raw:perlio", $filename) {
550	$data = <$data>;
551	if (open my $pst, "<:raw:perlio", "$filename.pst") {
552	$av = eval { (Storable::thaw <$pst>)->{objs} };
553	}
554	return ($data, $av);
555	}
556
557	()
558	}
559
560	attach_to_objects
561	prio => -1000000,	719	prio => -1000000,
		720	on_instantiate => sub {
		721	my ($obj, $data) = @_;
		722
		723	$data = from_json $data;
		724
		725	for (@$data) {
		726	my ($name, $args) = @$_;
		727
		728	$obj->attach ($name, %{$args || {} });
		729	}
		730	},
		731	on_reattach => \&reattach,
562	on_clone => sub {	732	on_clone => sub {
563	my ($src, $dst) = @_;	733	my ($src, $dst) = @_;
564		734
565	@{$dst->registry} = @{$src->registry};	735	@{$dst->registry} = @{$src->registry};
566		736
567	%$dst = %$src;	737	%$dst = %$src;
568		738
569	%{$dst->{_attachment}} = %{$src->{_attachment}}	739	%{$dst->{_attachment}} = %{$src->{_attachment}}
570	if exists $src->{_attachment};	740	if exists $src->{_attachment};
571	},	741	},
572	;	742	);
		743
		744	sub object_freezer_save {
		745	my ($filename, $rdata, $objs) = @_;
		746
		747	sync_job {
		748	if (length $$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	}
573		808
574	#############################################################################	809	#############################################################################
575	# old plug-in events	810	# command handling &c
576		811
577	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
578	my $extension = shift;
579	my $event_code = shift;
580		813
581	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
582	or return;	815	$name.
583		816
584	&$cb	817	=cut
585	}
586
587	sub inject_global_event {
588	my $event = shift;
589
590	my $cb = $hook[$event]
591	or return;
592
593	List::Util::max map &$_, values %$cb
594	}
595
596	sub inject_command {
597	my ($name, $obj, $params) = @_;
598
599	for my $cmd (@{ $command{$name} }) {
600	$cmd->[1]->($obj, $params);
601	}
602
603	-1
604	}
605		818
606	sub register_command {	819	sub register_command {
607	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
608		821
609	my $caller = caller;	822	my $caller = caller;
610	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
611		824
612	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
613	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
614	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
615		836
616	sub register_extcmd {	837	sub register_extcmd {
617	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
618		839
619	my $caller = caller;	840	$EXTCMD{$name} = $cb;
620	#warn "registering extcmd '$name' to '$caller'";
621
622	$extcmd{$name} = [$cb, $caller];
623	}	841	}
624		842
625	sub register {	843	cf::player->attach (
626	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
627		846
628	#TODO	847	my $cb = $COMMAND{$name}
629	}	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	);
630		874
631	sub load_extension {	875	sub load_extension {
632	my ($path) = @_;	876	my ($path) = @_;
633		877
634	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
635	my $base = $1;	879	my $base = $1;
636	my $pkg = $1;	880	my $pkg = $1;
637	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
638	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
639		883
640	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
641		885
642	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
643	or die "$path: $!";	887	or die "$path: $!";
644		888
645	my $source =	889	my $source =
646	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
647	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
648	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
649	. "\n};\n1";	893	. "\n};\n1";
650		894
651	eval $source	895	unless (eval $source) {
652	or die $@ ? "$path: $@\n"	896	my $msg = $@ ? "$path: $@\n"
653	: "extension disabled.\n";	897	: "extension disabled.\n";
654		898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
655	push @exts, $pkg;	899	warn $@;
656	$ext_pkg{$base} = $pkg;	900	warn "mandatory extension failed to load, exiting.\n";
657		901	exit 1;
658	# no strict 'refs';	902	}
659	# @{"$pkg\::ISA"} = ext::;	903	die $@;
660
661	register $base, $pkg;
662	}
663
664	sub unload_extension {
665	my ($pkg) = @_;
666
667	warn "removing extension $pkg\n";
668
669	# remove hooks
670	#TODO
671	# for my $idx (0 .. $#PLUGIN_EVENT) {
672	# delete $hook[$idx]{$pkg};
673	# }	904	}
674		905
675	# remove commands	906	push @EXTS, $pkg;
676	for my $name (keys %command) {
677	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
678
679	if (@cb) {
680	$command{$name} = \@cb;
681	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
682	} else {
683	delete $command{$name};
684	delete $COMMAND{"$name\000"};
685	}
686	}
687
688	# remove extcmds
689	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
690	delete $extcmd{$name};
691	}
692
693	if (my $cb = $pkg->can ("unload")) {
694	eval {
695	$cb->($pkg);
696	1
697	} or warn "$pkg unloaded, but with errors: $@";
698	}
699
700	Symbol::delete_package $pkg;
701	}	907	}
702		908
703	sub load_extensions {	909	sub load_extensions {
704	my $LIBDIR = maps_directory "perl";
705
706	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
707	next unless -r $ext;	911	next unless -r $ext;
708	eval {	912	eval {
709	load_extension $ext;	913	load_extension $ext;
710	1	914	1
711	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
712	}	916	}
713	}	917	}
714		918
715	#############################################################################	919	#############################################################################
716	# extcmd framework, basically convert ext <msg>
717	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
718		920
719	attach_to_players	921	=head2 CORE EXTENSIONS
720	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	$path = "$path"; # make sure its a string
		1182
		1183	# map plan:
		1184	#
		1185	# /! non-realised random map exit (special hack!)
		1186	# {... are special paths that are not being touched
		1187	# ?xxx/... are special absolute paths
		1188	# ?random/... random maps
		1189	# /... normal maps
		1190	# ~user/... per-player map of a specific user
		1191
		1192	$path =~ s/$PATH_SEP/\//go;
		1193
		1194	# treat it as relative path if it starts with
		1195	# something that looks reasonable
		1196	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1197	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1198
		1199	$base =~ s{[^/]+/?$}{};
		1200	$path = "$base/$path";
		1201	}
		1202
		1203	for ($path) {
		1204	redo if s{//}{/};
		1205	redo if s{/\.?/}{/};
		1206	redo if s{/[^/]+/\.\./}{/};
		1207	}
		1208
		1209	$path
		1210	}
		1211
		1212	sub new_from_path {
		1213	my (undef, $path, $base) = @_;
		1214
		1215	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1216
		1217	$path = normalise $path, $base;
		1218
		1219	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1220	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1221	my $self = bless cf::map::new, $pkg;
		1222	$self->{path} = $path; $self->path ($path);
		1223	$self->init; # pass $1 etc.
		1224	return $self;
		1225	}
		1226	}
		1227
		1228	Carp::carp "unable to resolve path '$path' (base '$base').";
		1229	()
		1230	}
		1231
		1232	sub init {
		1233	my ($self) = @_;
		1234
		1235	$self
		1236	}
		1237
		1238	sub as_string {
		1239	my ($self) = @_;
		1240
		1241	"$self->{path}"
		1242	}
		1243
		1244	# the displayed name, this is a one way mapping
		1245	sub visible_name {
		1246	&as_string
		1247	}
		1248
		1249	# the original (read-only) location
		1250	sub load_path {
		1251	my ($self) = @_;
		1252
		1253	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1254	}
		1255
		1256	# the temporary/swap location
		1257	sub save_path {
		1258	my ($self) = @_;
		1259
		1260	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1261	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1262	}
		1263
		1264	# the unique path, undef == no special unique path
		1265	sub uniq_path {
		1266	my ($self) = @_;
		1267
		1268	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1269	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1270	}
		1271
		1272	# and all this just because we cannot iterate over
		1273	# all maps in C++...
		1274	sub change_all_map_light {
		1275	my ($change) = @_;
		1276
		1277	$_->change_map_light ($change)
		1278	for grep $_->outdoor, values %cf::MAP;
		1279	}
		1280
		1281	sub unlink_save {
		1282	my ($self) = @_;
		1283
		1284	utf8::encode (my $save = $self->save_path);
		1285	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1286	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1287	}
		1288
		1289	sub load_header_from($) {
		1290	my ($self, $path) = @_;
		1291
		1292	utf8::encode $path;
		1293	aio_open $path, O_RDONLY, 0
		1294	or return;
		1295
		1296	$self->_load_header ($path)
		1297	or return;
		1298
		1299	$self->{load_path} = $path;
		1300
		1301	1
		1302	}
		1303
		1304	sub load_header_orig {
		1305	my ($self) = @_;
		1306
		1307	$self->load_header_from ($self->load_path)
		1308	}
		1309
		1310	sub load_header_temp {
		1311	my ($self) = @_;
		1312
		1313	$self->load_header_from ($self->save_path)
		1314	}
		1315
		1316	sub prepare_temp {
		1317	my ($self) = @_;
		1318
		1319	$self->last_access ((delete $self->{last_access})
		1320	|| $cf::RUNTIME); #d#
		1321	# safety
		1322	$self->{instantiate_time} = $cf::RUNTIME
		1323	if $self->{instantiate_time} > $cf::RUNTIME;
		1324	}
		1325
		1326	sub prepare_orig {
		1327	my ($self) = @_;
		1328
		1329	$self->{load_original} = 1;
		1330	$self->{instantiate_time} = $cf::RUNTIME;
		1331	$self->last_access ($cf::RUNTIME);
		1332	$self->instantiate;
		1333	}
		1334
		1335	sub load_header {
		1336	my ($self) = @_;
		1337
		1338	if ($self->load_header_temp) {
		1339	$self->prepare_temp;
		1340	} else {
		1341	$self->load_header_orig
		1342	or return;
		1343	$self->prepare_orig;
		1344	}
		1345
		1346	1
		1347	}
		1348
		1349	sub find;
		1350	sub find {
		1351	my ($path, $origin) = @_;
		1352
		1353	$path = normalise $path, $origin && $origin->path;
		1354
		1355	cf::lock_wait "map_find:$path";
		1356
		1357	$cf::MAP{$path} || do {
		1358	my $guard = cf::lock_acquire "map_find:$path";
		1359	my $map = new_from_path cf::map $path
		1360	or return;
		1361
		1362	$map->{last_save} = $cf::RUNTIME;
		1363
		1364	$map->load_header
		1365	or return;
		1366
		1367	if ($map->should_reset) {
		1368	# doing this can freeze the server in a sync job, obviously
		1369	#$cf::WAIT_FOR_TICK->wait;
		1370	$map->reset;
		1371	undef $guard;
		1372	return find $path;
		1373	}
		1374
		1375	$cf::MAP{$path} = $map
		1376	}
		1377	}
		1378
		1379	sub pre_load { }
		1380	sub post_load { }
		1381
		1382	sub load {
		1383	my ($self) = @_;
		1384
		1385	my $path = $self->{path};
		1386	my $guard = cf::lock_acquire "map_load:$path";
		1387
		1388	return if $self->in_memory != cf::MAP_SWAPPED;
		1389
		1390	$self->in_memory (cf::MAP_LOADING);
		1391
		1392	$self->alloc;
		1393
		1394	$self->pre_load;
		1395
		1396	$self->_load_objects ($self->{load_path}, 1)
		1397	or return;
		1398
		1399	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1400	if delete $self->{load_original};
		1401
		1402	if (my $uniq = $self->uniq_path) {
		1403	utf8::encode $uniq;
		1404	if (aio_open $uniq, O_RDONLY, 0) {
		1405	$self->clear_unique_items;
		1406	$self->_load_objects ($uniq, 0);
		1407	}
		1408	}
		1409
		1410	Coro::cede;
		1411
		1412	# now do the right thing for maps
		1413	$self->link_multipart_objects;
		1414
		1415	unless ($self->{deny_activate}) {
		1416	$self->decay_objects;
		1417	$self->fix_auto_apply;
		1418	$self->update_buttons;
		1419	Coro::cede;
		1420	$self->set_darkness_map;
		1421	$self->difficulty ($self->estimate_difficulty)
		1422	unless $self->difficulty;
		1423	Coro::cede;
		1424	$self->activate;
		1425	}
		1426
		1427	$self->post_load;
		1428
		1429	$self->in_memory (cf::MAP_IN_MEMORY);
		1430	}
		1431
		1432	sub customise_for {
721	my ($pl, $buf) = @_;	1433	my ($self, $ob) = @_;
722		1434
723	my $msg = eval { from_json $buf };	1435	return find "~" . $ob->name . "/" . $self->{path}
		1436	if $self->per_player;
724		1437
725	if (ref $msg) {	1438	$self
726	if (my $cb = $extcmd{$msg->{msgtype}}) {	1439	}
727	if (my %reply = $cb->[0]->($pl, $msg)) {	1440
728	$pl->ext_reply ($msg->{msgid}, %reply);	1441	# find and load all maps in the 3x3 area around a map
729	}	1442	sub load_diag {
		1443	my ($map) = @_;
		1444
		1445	my @diag; # diagonal neighbours
		1446
		1447	for (0 .. 3) {
		1448	my $neigh = $map->tile_path ($_)
		1449	or next;
		1450	$neigh = find $neigh, $map
		1451	or next;
		1452	$neigh->load;
		1453
		1454	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1455	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1456	}
		1457
		1458	for (@diag) {
		1459	my $neigh = find @$_
		1460	or next;
		1461	$neigh->load;
		1462	}
		1463	}
		1464
		1465	sub find_sync {
		1466	my ($path, $origin) = @_;
		1467
		1468	cf::sync_job { find $path, $origin }
		1469	}
		1470
		1471	sub do_load_sync {
		1472	my ($map) = @_;
		1473
		1474	cf::sync_job { $map->load };
		1475	}
		1476
		1477	our %MAP_PREFETCH;
		1478	our $MAP_PREFETCHER = undef;
		1479
		1480	sub find_async {
		1481	my ($path, $origin) = @_;
		1482
		1483	$path = normalise $path, $origin && $origin->{path};
		1484
		1485	if (my $map = $cf::MAP{$path}) {
		1486	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1487	}
		1488
		1489	undef $MAP_PREFETCH{$path};
		1490	$MAP_PREFETCHER ||= cf::async {
		1491	while (%MAP_PREFETCH) {
		1492	for my $path (keys %MAP_PREFETCH) {
		1493	my $map = find $path
		1494	or next;
		1495	$map->load;
		1496
		1497	delete $MAP_PREFETCH{$path};
730	}	1498	}
		1499	}
		1500	undef $MAP_PREFETCHER;
		1501	};
		1502	$MAP_PREFETCHER->prio (6);
		1503
		1504	()
		1505	}
		1506
		1507	sub save {
		1508	my ($self) = @_;
		1509
		1510	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1511
		1512	$self->{last_save} = $cf::RUNTIME;
		1513
		1514	return unless $self->dirty;
		1515
		1516	my $save = $self->save_path; utf8::encode $save;
		1517	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1518
		1519	$self->{load_path} = $save;
		1520
		1521	return if $self->{deny_save};
		1522
		1523	local $self->{last_access} = $self->last_access;#d#
		1524
		1525	cf::async {
		1526	$_->contr->save for $self->players;
		1527	};
		1528
		1529	if ($uniq) {
		1530	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1531	$self->_save_objects ($uniq, cf::IO_UNIQUES);
731	} else {	1532	} else {
732	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1533	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
733	}
734
735	cf::override;
736	},	1534	}
737	;	1535	}
738		1536
739	#############################################################################	1537	sub swap_out {
740	# load/save/clean perl data associated with a map
741
742	*cf::mapsupport::on_clean = sub {
743	my ($map) = @_;	1538	my ($self) = @_;
744		1539
745	my $path = $map->tmpname;	1540	# save first because save cedes
746	defined $path or return;	1541	$self->save;
747		1542
748	unlink "$path.pst";	1543	my $lock = cf::lock_acquire "map_data:" . $self->path;
749	};
750		1544
751	attach_to_maps prio => -10000, package => cf::mapsupport::;	1545	return if $self->players;
		1546	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1547	return if $self->{deny_save};
752		1548
753	#############################################################################	1549	$self->clear;
754	# load/save perl data associated with player->ob objects	1550	$self->in_memory (cf::MAP_SWAPPED);
755
756	sub all_objects(@) {
757	@_, map all_objects ($_->inv), @_
758	}	1551	}
759		1552
760	# TODO: compatibility cruft, remove when no longer needed	1553	sub reset_at {
761	attach_to_players	1554	my ($self) = @_;
762	on_load => sub {
763	my ($pl, $path) = @_;
764		1555
765	for my $o (all_objects $pl->ob) {	1556	# TODO: safety, remove and allow resettable per-player maps
766	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1557	return 1e99 if $self->isa ("ext::map_per_player");#d#
767	$o->set_ob_key_value ("_perl_data");	1558	return 1e99 if $self->{deny_reset};
768		1559
769	%$o = %{ Storable::thaw pack "H*", $value };	1560	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
770	}	1561	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
771	}	1562
		1563	$time + $to
		1564	}
		1565
		1566	sub should_reset {
		1567	my ($self) = @_;
		1568
		1569	$self->reset_at <= $cf::RUNTIME
		1570	}
		1571
		1572	sub reset {
		1573	my ($self) = @_;
		1574
		1575	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1576
		1577	return if $self->players;
		1578	return if $self->isa ("ext::map_per_player");#d#
		1579
		1580	warn "resetting map ", $self->path;#d#
		1581
		1582	delete $cf::MAP{$self->path};
		1583
		1584	$self->in_memory (cf::MAP_SWAPPED);
		1585	$self->clear;
		1586
		1587	$_->clear_links_to ($self) for values %cf::MAP;
		1588
		1589	$self->unlink_save;
		1590	$self->destroy;
		1591	}
		1592
		1593	my $nuke_counter = "aaaa";
		1594
		1595	sub nuke {
		1596	my ($self) = @_;
		1597
		1598	delete $cf::MAP{$self->path};
		1599
		1600	$self->unlink_save;
		1601
		1602	bless $self, "cf::map";
		1603	delete $self->{deny_reset};
		1604	$self->{deny_save} = 1;
		1605	$self->reset_timeout (1);
		1606	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1607
		1608	$cf::MAP{$self->path} = $self;
		1609
		1610	$self->reset; # polite request, might not happen
		1611	}
		1612
		1613	=item cf::map::unique_maps
		1614
		1615	Returns an arrayref of paths of all shared maps that have
		1616	instantiated unique items. May block.
		1617
		1618	=cut
		1619
		1620	sub unique_maps() {
		1621	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1622	or return;
		1623
		1624	my @paths;
		1625
		1626	for (@$files) {
		1627	utf8::decode $_;
		1628	next if /\.pst$/;
		1629	next unless /^$PATH_SEP/o;
		1630
		1631	s/\.map$//;
		1632	push @paths, $_;
772	},	1633	}
773	;
774		1634
775	#############################################################################	1635	\@paths
		1636	}
776		1637
777	=head2 CORE EXTENSIONS	1638	package cf;
778		1639
779	Functions and methods that extend core crossfire objects.	1640	=back
		1641
		1642	=head3 cf::object
		1643
		1644	=cut
		1645
		1646	package cf::object;
780		1647
781	=over 4	1648	=over 4
782		1649
783	=item cf::player::exists $login	1650	=item $ob->inv_recursive
784		1651
785	Returns true when the given account exists.	1652	Returns the inventory of the object _and_ their inventories, recursively.
786		1653
787	=cut	1654	=cut
788		1655
789	sub cf::player::exists($) {	1656	sub inv_recursive_;
790	cf::player::find $_[0]	1657	sub inv_recursive_ {
791	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1658	map { $_, inv_recursive_ $_->inv } @_
792	}	1659	}
		1660
		1661	sub inv_recursive {
		1662	inv_recursive_ inv $_[0]
		1663	}
		1664
		1665	package cf;
		1666
		1667	=back
		1668
		1669	=head3 cf::object::player
		1670
		1671	=over 4
793		1672
794	=item $player_object->reply ($npc, $msg[, $flags])	1673	=item $player_object->reply ($npc, $msg[, $flags])
795		1674
796	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1675	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
797	can be C<undef>. Does the right thing when the player is currently in a	1676	can be C<undef>. Does the right thing when the player is currently in a
…		…
799		1678
800	=cut	1679	=cut
801		1680
802	# rough implementation of a future "reply" method that works	1681	# rough implementation of a future "reply" method that works
803	# with dialog boxes.	1682	# with dialog boxes.
		1683	#TODO: the first argument must go, split into a $npc->reply_to ( method
804	sub cf::object::player::reply($$$;$) {	1684	sub cf::object::player::reply($$$;$) {
805	my ($self, $npc, $msg, $flags) = @_;	1685	my ($self, $npc, $msg, $flags) = @_;
806		1686
807	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1687	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
808		1688
…		…
812	$msg = $npc->name . " says: $msg" if $npc;	1692	$msg = $npc->name . " says: $msg" if $npc;
813	$self->message ($msg, $flags);	1693	$self->message ($msg, $flags);
814	}	1694	}
815	}	1695	}
816		1696
817	=item $player->ext_reply ($msgid, $msgtype, %msg)
818
819	Sends an ext reply to the player.
820
821	=cut
822
823	sub cf::player::ext_reply($$$%) {
824	my ($self, $id, %msg) = @_;
825
826	$msg{msgid} = $id;
827
828	$self->send ("ext " . to_json \%msg);
829	}
830
831	=item $player_object->may ("access")	1697	=item $player_object->may ("access")
832		1698
833	Returns wether the given player is authorized to access resource "access"	1699	Returns wether the given player is authorized to access resource "access"
834	(e.g. "command_wizcast").	1700	(e.g. "command_wizcast").
835		1701
…		…
842	(ref $cf::CFG{"may_$access"}	1708	(ref $cf::CFG{"may_$access"}
843	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1709	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
844	: $cf::CFG{"may_$access"})	1710	: $cf::CFG{"may_$access"})
845	}	1711	}
846		1712
847	=cut	1713	=item $player_object->enter_link
848		1714
849	#############################################################################	1715	Freezes the player and moves him/her to a special map (C<{link}>).
		1716
		1717	The player should be reasonably safe there for short amounts of time. You
		1718	I<MUST> call C<leave_link> as soon as possible, though.
		1719
		1720	Will never block.
		1721
		1722	=item $player_object->leave_link ($map, $x, $y)
		1723
		1724	Moves the player out of the special C<{link}> map onto the specified
		1725	map. If the map is not valid (or omitted), the player will be moved back
		1726	to the location he/she was before the call to C<enter_link>, or, if that
		1727	fails, to the emergency map position.
		1728
		1729	Might block.
		1730
		1731	=cut
		1732
		1733	sub link_map {
		1734	unless ($LINK_MAP) {
		1735	$LINK_MAP = cf::map::find "{link}"
		1736	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1737	$LINK_MAP->load;
		1738	}
		1739
		1740	$LINK_MAP
		1741	}
		1742
		1743	sub cf::object::player::enter_link {
		1744	my ($self) = @_;
		1745
		1746	$self->deactivate_recursive;
		1747
		1748	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1749
		1750	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1751	if $self->map;
		1752
		1753	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1754	}
		1755
		1756	sub cf::object::player::leave_link {
		1757	my ($self, $map, $x, $y) = @_;
		1758
		1759	my $link_pos = delete $self->{_link_pos};
		1760
		1761	unless ($map) {
		1762	# restore original map position
		1763	($map, $x, $y) = @{ $link_pos || [] };
		1764	$map = cf::map::find $map;
		1765
		1766	unless ($map) {
		1767	($map, $x, $y) = @$EMERGENCY_POSITION;
		1768	$map = cf::map::find $map
		1769	or die "FATAL: cannot load emergency map\n";
		1770	}
		1771	}
		1772
		1773	($x, $y) = (-1, -1)
		1774	unless (defined $x) && (defined $y);
		1775
		1776	# use -1 or undef as default coordinates, not 0, 0
		1777	($x, $y) = ($map->enter_x, $map->enter_y)
		1778	if $x <=0 && $y <= 0;
		1779
		1780	$map->load;
		1781	$map->load_diag;
		1782
		1783	return unless $self->contr->active;
		1784	$self->activate_recursive;
		1785	$self->enter_map ($map, $x, $y);
		1786	}
		1787
		1788	cf::player->attach (
		1789	on_logout => sub {
		1790	my ($pl) = @_;
		1791
		1792	# abort map switching before logout
		1793	if ($pl->ob->{_link_pos}) {
		1794	cf::sync_job {
		1795	$pl->ob->leave_link
		1796	};
		1797	}
		1798	},
		1799	on_login => sub {
		1800	my ($pl) = @_;
		1801
		1802	# try to abort aborted map switching on player login :)
		1803	# should happen only on crashes
		1804	if ($pl->ob->{_link_pos}) {
		1805	$pl->ob->enter_link;
		1806	(async {
		1807	# we need this sleep as the login has a concurrent enter_exit running
		1808	# and this sleep increases chances of the player not ending up in scorn
		1809	$pl->ob->reply (undef,
		1810	"There was an internal problem at your last logout, "
		1811	. "the server will try to bring you to your intended destination in a second.",
		1812	cf::NDI_RED);
		1813	Coro::Timer::sleep 1;
		1814	$pl->ob->leave_link;
		1815	})->prio (2);
		1816	}
		1817	},
		1818	);
		1819
		1820	=item $player_object->goto ($path, $x, $y)
		1821
		1822	=cut
		1823
		1824	sub cf::object::player::goto {
		1825	my ($self, $path, $x, $y) = @_;
		1826
		1827	$self->enter_link;
		1828
		1829	(async {
		1830	my $map = cf::map::find $path;
		1831	$map = $map->customise_for ($self) if $map;
		1832
		1833	# warn "entering ", $map->path, " at ($x, $y)\n"
		1834	# if $map;
		1835
		1836	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1837
		1838	$self->leave_link ($map, $x, $y);
		1839	})->prio (1);
		1840	}
		1841
		1842	=item $player_object->enter_exit ($exit_object)
		1843
		1844	=cut
		1845
		1846	sub parse_random_map_params {
		1847	my ($spec) = @_;
		1848
		1849	my $rmp = { # defaults
		1850	xsize => (cf::rndm 15, 40),
		1851	ysize => (cf::rndm 15, 40),
		1852	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1853	#layout => string,
		1854	};
		1855
		1856	for (split /\n/, $spec) {
		1857	my ($k, $v) = split /\s+/, $_, 2;
		1858
		1859	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1860	}
		1861
		1862	$rmp
		1863	}
		1864
		1865	sub prepare_random_map {
		1866	my ($exit) = @_;
		1867
		1868	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1869
		1870	# all this does is basically replace the /! path by
		1871	# a new random map path (?random/...) with a seed
		1872	# that depends on the exit object
		1873
		1874	my $rmp = parse_random_map_params $exit->msg;
		1875
		1876	if ($exit->map) {
		1877	$rmp->{region} = $exit->map->region_name;
		1878	$rmp->{origin_map} = $exit->map->path;
		1879	$rmp->{origin_x} = $exit->x;
		1880	$rmp->{origin_y} = $exit->y;
		1881	}
		1882
		1883	$rmp->{random_seed} ||= $exit->random_seed;
		1884
		1885	my $data = cf::to_json $rmp;
		1886	my $md5 = Digest::MD5::md5_hex $data;
		1887	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1888
		1889	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1890	aio_write $fh, 0, (length $data), $data, 0;
		1891	undef $fh;
		1892	aio_rename "$meta~", $meta;
		1893
		1894	$exit->slaying ("?random/$md5");
		1895	$exit->msg (undef);
		1896	}
		1897	}
		1898
		1899	sub cf::object::player::enter_exit {
		1900	my ($self, $exit) = @_;
		1901
		1902	return unless $self->type == cf::PLAYER;
		1903
		1904	$self->enter_link;
		1905
		1906	(async {
		1907	$self->deactivate_recursive; # just to be sure
		1908	unless (eval {
		1909	prepare_random_map $exit
		1910	if $exit->slaying eq "/!";
		1911
		1912	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1913	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1914
		1915	1;
		1916	}) {
		1917	$self->message ("Something went wrong deep within the crossfire server. "
		1918	. "I'll try to bring you back to the map you were before. "
		1919	. "Please report this to the dungeon master!",
		1920	cf::NDI_UNIQUE | cf::NDI_RED);
		1921
		1922	warn "ERROR in enter_exit: $@";
		1923	$self->leave_link;
		1924	}
		1925	})->prio (1);
		1926	}
		1927
		1928	=head3 cf::client
		1929
		1930	=over 4
		1931
		1932	=item $client->send_drawinfo ($text, $flags)
		1933
		1934	Sends a drawinfo packet to the client. Circumvents output buffering so
		1935	should not be used under normal circumstances.
		1936
		1937	=cut
		1938
		1939	sub cf::client::send_drawinfo {
		1940	my ($self, $text, $flags) = @_;
		1941
		1942	utf8::encode $text;
		1943	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1944	}
		1945
		1946
		1947	=item $success = $client->query ($flags, "text", \&cb)
		1948
		1949	Queues a query to the client, calling the given callback with
		1950	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1951	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1952
		1953	Queries can fail, so check the return code. Or don't, as queries will become
		1954	reliable at some point in the future.
		1955
		1956	=cut
		1957
		1958	sub cf::client::query {
		1959	my ($self, $flags, $text, $cb) = @_;
		1960
		1961	return unless $self->state == ST_PLAYING
		1962	|| $self->state == ST_SETUP
		1963	|| $self->state == ST_CUSTOM;
		1964
		1965	$self->state (ST_CUSTOM);
		1966
		1967	utf8::encode $text;
		1968	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1969
		1970	$self->send_packet ($self->{query_queue}[0][0])
		1971	if @{ $self->{query_queue} } == 1;
		1972	}
		1973
		1974	cf::client->attach (
		1975	on_reply => sub {
		1976	my ($ns, $msg) = @_;
		1977
		1978	# this weird shuffling is so that direct followup queries
		1979	# get handled first
		1980	my $queue = delete $ns->{query_queue}
		1981	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1982
		1983	(shift @$queue)->[1]->($msg);
		1984
		1985	push @{ $ns->{query_queue} }, @$queue;
		1986
		1987	if (@{ $ns->{query_queue} } == @$queue) {
		1988	if (@$queue) {
		1989	$ns->send_packet ($ns->{query_queue}[0][0]);
		1990	} else {
		1991	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1992	}
		1993	}
		1994	},
		1995	);
		1996
		1997	=item $client->async (\&cb)
		1998
		1999	Create a new coroutine, running the specified callback. The coroutine will
		2000	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2001	or loss of connection).
		2002
		2003	=cut
		2004
		2005	sub cf::client::async {
		2006	my ($self, $cb) = @_;
		2007
		2008	my $coro = &Coro::async ($cb);
		2009
		2010	$coro->on_destroy (sub {
		2011	delete $self->{_coro}{$coro+0};
		2012	});
		2013
		2014	$self->{_coro}{$coro+0} = $coro;
		2015
		2016	$coro
		2017	}
		2018
		2019	cf::client->attach (
		2020	on_destroy => sub {
		2021	my ($ns) = @_;
		2022
		2023	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2024	},
		2025	);
		2026
		2027	=back
		2028
850		2029
851	=head2 SAFE SCRIPTING	2030	=head2 SAFE SCRIPTING
852		2031
853	Functions that provide a safe environment to compile and execute	2032	Functions that provide a safe environment to compile and execute
854	snippets of perl code without them endangering the safety of the server	2033	snippets of perl code without them endangering the safety of the server
…		…
869		2048
870	=pod	2049	=pod
871		2050
872	The following fucntions and emthods are available within a safe environment:	2051	The following fucntions and emthods are available within a safe environment:
873		2052
874	cf::object contr pay_amount pay_player	2053	cf::object contr pay_amount pay_player map
875	cf::object::player player	2054	cf::object::player player
876	cf::player peaceful	2055	cf::player peaceful
		2056	cf::map trigger
877		2057
878	=cut	2058	=cut
879		2059
880	for (	2060	for (
881	["cf::object" => qw(contr pay_amount pay_player)],	2061	["cf::object" => qw(contr pay_amount pay_player map)],
882	["cf::object::player" => qw(player)],	2062	["cf::object::player" => qw(player)],
883	["cf::player" => qw(peaceful)],	2063	["cf::player" => qw(peaceful)],
		2064	["cf::map" => qw(trigger)],
884	) {	2065	) {
885	no strict 'refs';	2066	no strict 'refs';
886	my ($pkg, @funs) = @$_;	2067	my ($pkg, @funs) = @$_;
887	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2068	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
888	for @funs;	2069	for @funs;
…		…
1004		2185
1005	{	2186	{
1006	my $path = cf::localdir . "/database.pst";	2187	my $path = cf::localdir . "/database.pst";
1007		2188
1008	sub db_load() {	2189	sub db_load() {
1009	warn "loading database $path\n";#d# remove later
1010	$DB = stat $path ? Storable::retrieve $path : { };	2190	$DB = stat $path ? Storable::retrieve $path : { };
1011	}	2191	}
1012		2192
1013	my $pid;	2193	my $pid;
1014		2194
1015	sub db_save() {	2195	sub db_save() {
1016	warn "saving database $path\n";#d# remove later
1017	waitpid $pid, 0 if $pid;	2196	waitpid $pid, 0 if $pid;
1018	if (0 == ($pid = fork)) {	2197	if (0 == ($pid = fork)) {
1019	$DB->{_meta}{version} = 1;	2198	$DB->{_meta}{version} = 1;
1020	Storable::nstore $DB, "$path~";	2199	Storable::nstore $DB, "$path~";
1021	rename "$path~", $path;	2200	rename "$path~", $path;
…		…
1028	sub db_sync() {	2207	sub db_sync() {
1029	db_save if $dirty;	2208	db_save if $dirty;
1030	undef $dirty;	2209	undef $dirty;
1031	}	2210	}
1032		2211
1033	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2212	my $idle = Event->idle (
1034	db_sync;	2213	reentrant => 0,
		2214	min => 10,
		2215	max => 20,
		2216	repeat => 0,
		2217	data => WF_AUTOCANCEL,
		2218	cb => \&db_sync,
1035	});	2219	);
1036		2220
1037	sub db_dirty() {	2221	sub db_dirty() {
1038	$dirty = 1;	2222	$dirty = 1;
1039	$idle->start;	2223	$idle->start;
1040	}	2224	}
…		…
1052	$DB->{$_[0]} = $_[1];	2236	$DB->{$_[0]} = $_[1];
1053	}	2237	}
1054	db_dirty;	2238	db_dirty;
1055	}	2239	}
1056		2240
1057	attach_global	2241	cf::global->attach (
1058	prio => 10000,	2242	prio => 10000,
1059	on_cleanup => sub {	2243	on_cleanup => sub {
1060	db_sync;	2244	db_sync;
1061	},	2245	},
1062	;	2246	);
1063	}	2247	}
1064		2248
1065	#############################################################################	2249	#############################################################################
1066	# the server's main()	2250	# the server's main()
1067		2251
…		…
1069	open my $fh, "<:utf8", cf::confdir . "/config"	2253	open my $fh, "<:utf8", cf::confdir . "/config"
1070	or return;	2254	or return;
1071		2255
1072	local $/;	2256	local $/;
1073	*CFG = YAML::Syck::Load <$fh>;	2257	*CFG = YAML::Syck::Load <$fh>;
		2258
		2259	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2260
		2261	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2262	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2263
		2264	if (exists $CFG{mlockall}) {
		2265	eval {
		2266	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2267	and die "WARNING: m(un)lockall failed: $!\n";
		2268	};
		2269	warn $@ if $@;
		2270	}
1074	}	2271	}
1075		2272
1076	sub main {	2273	sub main {
		2274	# we must not ever block the main coroutine
		2275	local $Coro::idle = sub {
		2276	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2277	(async {
		2278	Event::one_event;
		2279	})->prio (Coro::PRIO_MAX);
		2280	};
		2281
1077	cfg_load;	2282	cfg_load;
1078	db_load;	2283	db_load;
1079	load_extensions;	2284	load_extensions;
		2285
		2286	$TICK_WATCHER->start;
1080	Event::loop;	2287	Event::loop;
1081	}	2288	}
1082		2289
1083	#############################################################################	2290	#############################################################################
1084	# initialisation	2291	# initialisation and cleanup
1085		2292
		2293	# install some emergency cleanup handlers
		2294	BEGIN {
		2295	for my $signal (qw(INT HUP TERM)) {
		2296	Event->signal (
		2297	reentrant => 0,
		2298	data => WF_AUTOCANCEL,
		2299	signal => $signal,
		2300	prio => 0,
		2301	cb => sub {
		2302	cf::cleanup "SIG$signal";
		2303	},
		2304	);
		2305	}
		2306	}
		2307
		2308	sub emergency_save() {
		2309	my $freeze_guard = cf::freeze_mainloop;
		2310
		2311	warn "enter emergency perl save\n";
		2312
		2313	cf::sync_job {
		2314	# use a peculiar iteration method to avoid tripping on perl
		2315	# refcount bugs in for. also avoids problems with players
		2316	# and maps saved/destroyed asynchronously.
		2317	warn "begin emergency player save\n";
		2318	for my $login (keys %cf::PLAYER) {
		2319	my $pl = $cf::PLAYER{$login} or next;
		2320	$pl->valid or next;
		2321	$pl->save;
		2322	}
		2323	warn "end emergency player save\n";
		2324
		2325	warn "begin emergency map save\n";
		2326	for my $path (keys %cf::MAP) {
		2327	my $map = $cf::MAP{$path} or next;
		2328	$map->valid or next;
		2329	$map->save;
		2330	}
		2331	warn "end emergency map save\n";
		2332	};
		2333
		2334	warn "leave emergency perl save\n";
		2335	}
		2336
1086	sub _perl_reload(&) {	2337	sub reload() {
1087	my ($msg) = @_;	2338	# can/must only be called in main
		2339	if ($Coro::current != $Coro::main) {
		2340	warn "can only reload from main coroutine";
		2341	return;
		2342	}
1088		2343
1089	$msg->("reloading...");	2344	warn "reloading...";
		2345
		2346	warn "cancelling server ticker";
		2347	$TICK_WATCHER->cancel;
		2348
		2349	cf::emergency_save;
1090		2350
1091	eval {	2351	eval {
1092	# cancel all watchers	2352	# if anything goes wrong in here, we should simply crash as we already saved
		2353
		2354	warn "syncing database to disk";
		2355	cf::db_sync;
		2356
		2357	warn "cancelling all WF_AUTOCANCEL watchers";
1093	$_->cancel for Event::all_watchers;	2358	for (Event::all_watchers) {
		2359	$_->cancel if $_->data & WF_AUTOCANCEL;
		2360	}
1094		2361
1095	# unload all extensions	2362	warn "flushing outstanding aio requests";
1096	for (@exts) {	2363	for (;;) {
1097	$msg->("unloading <$_>");	2364	IO::AIO::flush;
1098	unload_extension $_;	2365	Coro::cede;
		2366	last unless IO::AIO::nreqs;
		2367	warn "iterate...";
		2368	}
		2369
		2370	warn "cancelling all extension coros";
		2371	$_->cancel for values %EXT_CORO;
		2372	%EXT_CORO = ();
		2373
		2374	warn "removing commands";
		2375	%COMMAND = ();
		2376
		2377	warn "removing ext commands";
		2378	%EXTCMD = ();
		2379
		2380	warn "unloading/nuking all extensions";
		2381	for my $pkg (@EXTS) {
		2382	warn "... unloading $pkg";
		2383
		2384	if (my $cb = $pkg->can ("unload")) {
		2385	eval {
		2386	$cb->($pkg);
		2387	1
		2388	} or warn "$pkg unloaded, but with errors: $@";
1099	}	2389	}
1100		2390
		2391	warn "... nuking $pkg";
		2392	Symbol::delete_package $pkg;
		2393	}
		2394
1101	# unload all modules loaded from $LIBDIR	2395	warn "unloading all perl modules loaded from $LIBDIR";
1102	while (my ($k, $v) = each %INC) {	2396	while (my ($k, $v) = each %INC) {
1103	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2397	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1104		2398
1105	$msg->("removing <$k>");	2399	warn "... unloading $k";
1106	delete $INC{$k};	2400	delete $INC{$k};
1107		2401
1108	$k =~ s/\.pm$//;	2402	$k =~ s/\.pm$//;
1109	$k =~ s/\//::/g;	2403	$k =~ s/\//::/g;
1110		2404
…		…
1113	}	2407	}
1114		2408
1115	Symbol::delete_package $k;	2409	Symbol::delete_package $k;
1116	}	2410	}
1117		2411
1118	# sync database to disk
1119	cf::db_sync;
1120
1121	# get rid of safe::, as good as possible	2412	warn "getting rid of safe::, as good as possible";
1122	Symbol::delete_package "safe::$_"	2413	Symbol::delete_package "safe::$_"
1123	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2414	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1124		2415
1125	# remove register_script_function callbacks
1126	# TODO
1127
1128	# unload cf.pm "a bit"	2416	warn "unloading cf.pm \"a bit\"";
1129	delete $INC{"cf.pm"};	2417	delete $INC{"cf.pm"};
1130		2418
1131	# don't, removes xs symbols, too,	2419	# don't, removes xs symbols, too,
1132	# and global variables created in xs	2420	# and global variables created in xs
1133	#Symbol::delete_package __PACKAGE__;	2421	#Symbol::delete_package __PACKAGE__;
1134		2422
1135	# reload cf.pm	2423	warn "unload completed, starting to reload now";
		2424
1136	$msg->("reloading cf.pm");	2425	warn "reloading cf.pm";
1137	require cf;	2426	require cf;
		2427	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1138		2428
1139	# load config and database again	2429	warn "loading config and database again";
1140	cf::cfg_load;	2430	cf::cfg_load;
1141	cf::db_load;	2431	cf::db_load;
1142		2432
1143	# load extensions	2433	warn "loading extensions";
1144	$msg->("load extensions");
1145	cf::load_extensions;	2434	cf::load_extensions;
1146		2435
1147	# reattach attachments to objects	2436	warn "reattaching attachments to objects/players";
1148	$msg->("reattach");
1149	_global_reattach;	2437	_global_reattach;
		2438	warn "reattaching attachments to maps";
		2439	reattach $_ for values %MAP;
		2440
		2441	warn "restarting server ticker";
		2442
		2443	$TICK_WATCHER->start;
1150	};	2444	};
1151	$msg->($@) if $@;
1152		2445
1153	$msg->("reloaded");	2446	if ($@) {
		2447	warn $@;
		2448	warn "error while reloading, exiting.";
		2449	exit 1;
		2450	}
		2451
		2452	warn "reloaded";
1154	};	2453	};
1155		2454
1156	sub perl_reload() {	2455	our $RELOAD_WATCHER; # used only during reload
1157	_perl_reload {
1158	warn $_[0];
1159	print "$_[0]\n";
1160	};
1161	}
1162		2456
1163	register_command "perl-reload", 0, sub {	2457	register_command "reload" => sub {
1164	my ($who, $arg) = @_;	2458	my ($who, $arg) = @_;
1165		2459
1166	if ($who->flag (FLAG_WIZ)) {	2460	if ($who->flag (FLAG_WIZ)) {
1167	_perl_reload {	2461	$who->message ("reloading server.");
1168	warn $_[0];	2462
1169	$who->message ($_[0]);	2463	# doing reload synchronously and two reloads happen back-to-back,
		2464	# coro crashes during coro_state_free->destroy here.
		2465
		2466	$RELOAD_WATCHER ||= Event->timer (
		2467	reentrant => 0,
		2468	after => 0,
		2469	data => WF_AUTOCANCEL,
		2470	cb => sub {
		2471	reload;
		2472	undef $RELOAD_WATCHER;
		2473	},
1170	};	2474	);
1171	}	2475	}
1172	};	2476	};
1173		2477
1174	register "<global>", __PACKAGE__;
1175
1176	unshift @INC, $LIBDIR;	2478	unshift @INC, $LIBDIR;
1177		2479
		2480	my $bug_warning = 0;
		2481
1178	$TICK_WATCHER = Event->timer (	2482	$TICK_WATCHER = Event->timer (
		2483	reentrant => 0,
		2484	parked => 1,
1179	prio => 1,	2485	prio => 0,
1180	async => 1,
1181	at => $NEXT_TICK || 1,	2486	at => $NEXT_TICK || $TICK,
		2487	data => WF_AUTOCANCEL,
1182	cb => sub {	2488	cb => sub {
		2489	if ($Coro::current != $Coro::main) {
		2490	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2491	unless ++$bug_warning > 10;
		2492	return;
		2493	}
		2494
		2495	$NOW = Event::time;
		2496
1183	cf::server_tick; # one server iteration	2497	cf::server_tick; # one server iteration
1184		2498	$RUNTIME += $TICK;
1185	my $NOW = Event::time;
1186	$NEXT_TICK += $TICK;	2499	$NEXT_TICK += $TICK;
1187		2500
		2501	$WAIT_FOR_TICK->broadcast;
		2502	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2503
		2504	Event::sweep;
		2505	Coro::cede_notself;
		2506
		2507	# my $AFTER = Event::time;
		2508	# warn $AFTER - $NOW;#d#
		2509
1188	# if we are delayed by four ticks or more, skip them all	2510	# if we are delayed by four ticks or more, skip them all
1189	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2511	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1190		2512
1191	$TICK_WATCHER->at ($NEXT_TICK);	2513	$TICK_WATCHER->at ($NEXT_TICK);
1192	$TICK_WATCHER->start;	2514	$TICK_WATCHER->start;
1193	},	2515	},
1194	);	2516	);
1195		2517
1196	IO::AIO::max_poll_time $TICK * 0.2;	2518	IO::AIO::max_poll_time $TICK * 0.1;
1197		2519
		2520	undef $Coro::AIO::WATCHER;
		2521	$AIO_POLL_WATCHER = Event->io (
		2522	reentrant => 0,
1198	Event->io (fd => IO::AIO::poll_fileno,	2523	fd => IO::AIO::poll_fileno,
1199	poll => 'r',	2524	poll => 'r',
1200	prio => 5,	2525	prio => 6,
		2526	data => WF_AUTOCANCEL,
1201	cb => \&IO::AIO::poll_cb);	2527	cb => \&IO::AIO::poll_cb,
		2528	);
		2529
		2530	$WRITE_RUNTIME_WATCHER = Event->timer (
		2531	reentrant => 0,
		2532	data => WF_AUTOCANCEL,
		2533	after => 1,
		2534	interval => 10,
		2535	prio => 6, # keep it lowest so it acts like a watchdog
		2536	cb => Coro::unblock_sub {
		2537	write_runtime
		2538	or warn "ERROR: unable to write runtime file: $!";
		2539	},
		2540	);
		2541
		2542	END { cf::emergency_save }
1202		2543
1203	1	2544	1
1204		2545

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