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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 1.206 by root, Sun Feb 11 22:27:05 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 BDB ();
		21	use Data::Dumper;
		22	use Digest::MD5;
		23	use Fcntl;
10	use IO::AIO ();	24	use IO::AIO 2.32 ();
11	use YAML::Syck ();	25	use YAML::Syck ();
12	use Time::HiRes;	26	use Time::HiRes;
13	use Event;	27
14	$Event::Eval = 1; # no idea why this is required, but it is	28	use Event; $Event::Eval = 1; # no idea why this is required, but it is
		29
		30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		31
16	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	32	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
17	$YAML::Syck::ImplicitUnicode = 1;	33	$YAML::Syck::ImplicitUnicode = 1;
18		34
19	use strict;	35	$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		36
23	our %COMMAND = ();	37	our %COMMAND = ();
24	our %COMMAND_TIME = ();	38	our %COMMAND_TIME = ();
		39
		40	our @EXTS = (); # list of extension package names
25	our %EXTCMD = ();	41	our %EXTCMD = ();
26		42	our %EXT_CORO = (); # coroutines bound to extensions
27	_init_vars;	43	our %EXT_MAP = (); # pluggable maps
28		44
29	our @EVENT;	45	our @EVENT;
30	our $LIBDIR = datadir . "/ext";	46	our $LIBDIR = datadir . "/ext";
31		47
32	our $TICK = MAX_TIME * 1e-6;	48	our $TICK = MAX_TIME * 1e-6;
33	our $TICK_WATCHER;	49	our $TICK_WATCHER;
		50	our $AIO_POLL_WATCHER;
		51	our $WRITE_RUNTIME_WATCHER;
34	our $NEXT_TICK;	52	our $NEXT_TICK;
		53	our $NOW;
		54	our $USE_FSYNC = 1; # use fsync to write maps - default off
		55
		56	our $BDB_POLL_WATCHER;
		57	our $DB_ENV;
35		58
36	our %CFG;	59	our %CFG;
37		60
38	our $UPTIME; $UPTIME ||= time;	61	our $UPTIME; $UPTIME ||= time;
		62	our $RUNTIME;
		63
		64	our %PLAYER; # all users
		65	our %MAP; # all maps
		66	our $LINK_MAP; # the special {link} map, which is always available
		67	our $RANDOM_MAPS = cf::localdir . "/random";
		68	our $BDB_ENV_DIR = cf::localdir . "/db";
		69
		70	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		71	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		72
		73	# used to convert map paths into valid unix filenames by replacing / by ∕
		74	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		75
		76	binmode STDOUT;
		77	binmode STDERR;
		78
		79	# read virtual server time, if available
		80	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		81	open my $fh, "<", cf::localdir . "/runtime"
		82	or die "unable to read runtime file: $!";
		83	$RUNTIME = <$fh> + 0.;
		84	}
		85
		86	mkdir cf::localdir;
		87	mkdir cf::localdir . "/" . cf::playerdir;
		88	mkdir cf::localdir . "/" . cf::tmpdir;
		89	mkdir cf::localdir . "/" . cf::uniquedir;
		90	mkdir $RANDOM_MAPS;
		91	mkdir $BDB_ENV_DIR;
		92
		93	our $EMERGENCY_POSITION;
		94
		95	sub cf::map::normalise;
39		96
40	#############################################################################	97	#############################################################################
41		98
42	=head2 GLOBAL VARIABLES	99	=head2 GLOBAL VARIABLES
43		100
44	=over 4	101	=over 4
45		102
46	=item $cf::UPTIME	103	=item $cf::UPTIME
47		104
48	The timestamp of the server start (so not actually an uptime).	105	The timestamp of the server start (so not actually an uptime).
		106
		107	=item $cf::RUNTIME
		108
		109	The time this server has run, starts at 0 and is increased by $cf::TICK on
		110	every server tick.
49		111
50	=item $cf::LIBDIR	112	=item $cf::LIBDIR
51		113
52	The perl library directory, where extensions and cf-specific modules can	114	The perl library directory, where extensions and cf-specific modules can
53	be found. It will be added to C<@INC> automatically.	115	be found. It will be added to C<@INC> automatically.
54		116
		117	=item $cf::NOW
		118
		119	The time of the last (current) server tick.
		120
55	=item $cf::TICK	121	=item $cf::TICK
56		122
57	The interval between server ticks, in seconds.	123	The interval between server ticks, in seconds.
58		124
59	=item %cf::CFG	125	=item %cf::CFG
60		126
61	Configuration for the server, loaded from C</etc/crossfire/config>, or	127	Configuration for the server, loaded from C</etc/crossfire/config>, or
62	from wherever your confdir points to.	128	from wherever your confdir points to.
		129
		130	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		131
		132	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		133	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		134	processing has been done. Call C<< ->wait >> on them to maximise the
		135	window of cpu time available, or simply to synchronise to the server tick.
63		136
64	=back	137	=back
65		138
66	=cut	139	=cut
67		140
68	BEGIN {	141	BEGIN {
69	*CORE::GLOBAL::warn = sub {	142	*CORE::GLOBAL::warn = sub {
70	my $msg = join "", @_;	143	my $msg = join "", @_;
		144	utf8::encode $msg;
		145
71	$msg .= "\n"	146	$msg .= "\n"
72	unless $msg =~ /\n$/;	147	unless $msg =~ /\n$/;
73		148
74	print STDERR "cfperl: $msg";
75	LOG llevError, "cfperl: $msg";	149	LOG llevError, $msg;
76	};	150	};
77	}	151	}
78		152
		153	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		154	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		155	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		156	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		157	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
79	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	158	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
80		159
81	# we bless all objects into (empty) derived classes to force a method lookup	160	# we bless all objects into (empty) derived classes to force a method lookup
82	# within the Safe compartment.	161	# within the Safe compartment.
83	for my $pkg (qw(	162	for my $pkg (qw(
		163	cf::global cf::attachable
84	cf::object cf::object::player	164	cf::object cf::object::player
85	cf::client cf::player	165	cf::client cf::player
86	cf::arch cf::living	166	cf::arch cf::living
87	cf::map cf::party cf::region	167	cf::map cf::party cf::region
88	)) {	168	)) {
…		…
92		172
93	$Event::DIED = sub {	173	$Event::DIED = sub {
94	warn "error in event callback: @_";	174	warn "error in event callback: @_";
95	};	175	};
96		176
97	my %ext_pkg;
98	my @exts;
99	my @hook;
100
101	=head2 UTILITY FUNCTIONS	177	=head2 UTILITY FUNCTIONS
102		178
103	=over 4	179	=over 4
104		180
		181	=item dumpval $ref
		182
105	=cut	183	=cut
		184
		185	sub dumpval {
		186	eval {
		187	local $SIG{__DIE__};
		188	my $d;
		189	if (1) {
		190	$d = new Data::Dumper([$_[0]], ["*var"]);
		191	$d->Terse(1);
		192	$d->Indent(2);
		193	$d->Quotekeys(0);
		194	$d->Useqq(1);
		195	#$d->Bless(...);
		196	$d->Seen($_[1]) if @_ > 1;
		197	$d = $d->Dump();
		198	}
		199	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		200	$d
		201	} || "[unable to dump $_[0]: '$@']";
		202	}
106		203
107	use JSON::Syck (); # TODO# replace by JSON::PC once working	204	use JSON::Syck (); # TODO# replace by JSON::PC once working
108		205
109	=item $ref = cf::from_json $json	206	=item $ref = cf::from_json $json
110		207
…		…
126	sub to_json($) {	223	sub to_json($) {
127	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	224	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
128	JSON::Syck::Dump $_[0]	225	JSON::Syck::Dump $_[0]
129	}	226	}
130		227
		228	=item cf::lock_wait $string
		229
		230	Wait until the given lock is available. See cf::lock_acquire.
		231
		232	=item my $lock = cf::lock_acquire $string
		233
		234	Wait until the given lock is available and then acquires it and returns
		235	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		236	for example when the coroutine gets canceled), the lock is automatically
		237	returned.
		238
		239	Lock names should begin with a unique identifier (for example, cf::map::find
		240	uses map_find and cf::map::load uses map_load).
		241
		242	=cut
		243
		244	our %LOCK;
		245
		246	sub lock_wait($) {
		247	my ($key) = @_;
		248
		249	# wait for lock, if any
		250	while ($LOCK{$key}) {
		251	push @{ $LOCK{$key} }, $Coro::current;
		252	Coro::schedule;
		253	}
		254	}
		255
		256	sub lock_acquire($) {
		257	my ($key) = @_;
		258
		259	# wait, to be sure we are not locked
		260	lock_wait $key;
		261
		262	$LOCK{$key} = [];
		263
		264	Coro::guard {
		265	# wake up all waiters, to be on the safe side
		266	$_->ready for @{ delete $LOCK{$key} };
		267	}
		268	}
		269
		270	sub freeze_mainloop {
		271	return unless $TICK_WATCHER->is_active;
		272
		273	my $guard = Coro::guard {
		274	$TICK_WATCHER->start;
		275	$WRITE_RUNTIME_WATCHER->start;
		276	};
		277	$WRITE_RUNTIME_WATCHER->stop;
		278	$TICK_WATCHER->stop;
		279	$guard
		280	}
		281
		282	=item cf::async { BLOCK }
		283
		284	Currently the same as Coro::async_pool, meaning you cannot use
		285	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		286	thing you are allowed to do is call C<prio> on it.
		287
		288	=cut
		289
		290	BEGIN { *async = \&Coro::async_pool }
		291
		292	=item cf::sync_job { BLOCK }
		293
		294	The design of crossfire+ requires that the main coro ($Coro::main) is
		295	always able to handle events or runnable, as crossfire+ is only partly
		296	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		297
		298	If it must be done, put the blocking parts into C<sync_job>. This will run
		299	the given BLOCK in another coroutine while waiting for the result. The
		300	server will be frozen during this time, so the block should either finish
		301	fast or be very important.
		302
		303	=cut
		304
		305	sub sync_job(&) {
		306	my ($job) = @_;
		307
		308	if ($Coro::current == $Coro::main) {
		309	# this is the main coro, too bad, we have to block
		310	# till the operation succeeds, freezing the server :/
		311
		312	# TODO: use suspend/resume instead
		313	# (but this is cancel-safe)
		314	my $freeze_guard = freeze_mainloop;
		315
		316	my $busy = 1;
		317	my @res;
		318
		319	(async {
		320	@res = eval { $job->() };
		321	warn $@ if $@;
		322	undef $busy;
		323	})->prio (Coro::PRIO_MAX);
		324
		325	while ($busy) {
		326	Coro::cede or Event::one_event;
		327	}
		328
		329	wantarray ? @res : $res[0]
		330	} else {
		331	# we are in another coroutine, how wonderful, everything just works
		332
		333	$job->()
		334	}
		335	}
		336
		337	=item $coro = cf::async_ext { BLOCK }
		338
		339	Like async, but this coro is automatically being canceled when the
		340	extension calling this is being unloaded.
		341
		342	=cut
		343
		344	sub async_ext(&) {
		345	my $cb = shift;
		346
		347	my $coro = &Coro::async ($cb);
		348
		349	$coro->on_destroy (sub {
		350	delete $EXT_CORO{$coro+0};
		351	});
		352	$EXT_CORO{$coro+0} = $coro;
		353
		354	$coro
		355	}
		356
		357	sub write_runtime {
		358	my $runtime = cf::localdir . "/runtime";
		359
		360	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		361	or return;
		362
		363	my $value = $cf::RUNTIME + 90 + 10;
		364	# 10 is the runtime save interval, for a monotonic clock
		365	# 60 allows for the watchdog to kill the server.
		366
		367	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		368	and return;
		369
		370	# always fsync - this file is important
		371	aio_fsync $fh
		372	and return;
		373
		374	close $fh
		375	or return;
		376
		377	aio_rename "$runtime~", $runtime
		378	and return;
		379
		380	1
		381	}
		382
131	=back	383	=back
132		384
133	=cut	385	=cut
134		386
135	#############################################################################	387	#############################################################################
136		388
137	=head2 EVENTS AND OBJECT ATTACHMENTS	389	=head2 ATTACHABLE OBJECTS
		390
		391	Many objects in crossfire are so-called attachable objects. That means you can
		392	attach callbacks/event handlers (a collection of which is called an "attachment")
		393	to it. All such attachable objects support the following methods.
		394
		395	In the following description, CLASS can be any of C<global>, C<object>
		396	C<player>, C<client> or C<map> (i.e. the attachable objects in
		397	crossfire+).
138		398
139	=over 4	399	=over 4
140		400
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...)	401	=item $attachable->attach ($attachment, key => $value...)
160		402
161	=item $client->detach ($attachment)	403	=item $attachable->detach ($attachment)
162		404
163	Attach/detach a pre-registered attachment to a map.	405	Attach/detach a pre-registered attachment to a specific object and give it
		406	the specified key/value pairs as arguments.
164		407
165	=item $bool = $object->attached ($name)	408	Example, attach a minesweeper attachment to the given object, making it a
		409	10x10 minesweeper game:
166		410
167	=item $bool = $player->attached ($name)	411	$obj->attach (minesweeper => width => 10, height => 10);
168		412
169	=item $bool = $client->attached ($name)	413	=item $bool = $attachable->attached ($name)
170
171	=item $bool = $map->attached ($name)
172		414
173	Checks wether the named attachment is currently attached to the object.	415	Checks wether the named attachment is currently attached to the object.
174		416
175	=item cf::attach_global ...	417	=item cf::CLASS->attach ...
176		418
177	Attach handlers for global events.	419	=item cf::CLASS->detach ...
178		420
179	This and all following C<attach_*>-functions expect any number of the	421	Define an anonymous attachment and attach it to all objects of the given
180	following handler/hook descriptions:	422	CLASS. See the next function for an explanation of its arguments.
		423
		424	You can attach to global events by using the C<cf::global> class.
		425
		426	Example, log all player logins:
		427
		428	cf::player->attach (
		429	on_login => sub {
		430	my ($pl) = @_;
		431	...
		432	},
		433	);
		434
		435	Example, attach to the jeweler skill:
		436
		437	cf::object->attach (
		438	type => cf::SKILL,
		439	subtype => cf::SK_JEWELER,
		440	on_use_skill => sub {
		441	my ($sk, $ob, $part, $dir, $msg) = @_;
		442	...
		443	},
		444	);
		445
		446	=item cf::CLASS::attachment $name, ...
		447
		448	Register an attachment by C<$name> through which attachable objects of the
		449	given CLASS can refer to this attachment.
		450
		451	Some classes such as crossfire maps and objects can specify attachments
		452	that are attached at load/instantiate time, thus the need for a name.
		453
		454	These calls expect any number of the following handler/hook descriptions:
181		455
182	=over 4	456	=over 4
183		457
184	=item prio => $number	458	=item prio => $number
185		459
…		…
187	by another C<prio> setting). Lower priority handlers get executed	461	by another C<prio> setting). Lower priority handlers get executed
188	earlier. The default priority is C<0>, and many built-in handlers are	462	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	463	registered at priority C<-1000>, so lower priorities should not be used
190	unless you know what you are doing.	464	unless you know what you are doing.
191		465
		466	=item type => $type
		467
		468	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		469	given type of objects only (the additional parameter C<subtype> can be
		470	used to further limit to the given subtype).
		471
192	=item on_I<event> => \&cb	472	=item on_I<event> => \&cb
193		473
194	Call the given code reference whenever the named event happens (event is	474	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	475	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	476	handlers are recognised generally depends on the type of object these
…		…
205	package and register them. Only handlers for eevents supported by the	485	package and register them. Only handlers for eevents supported by the
206	object/class are recognised.	486	object/class are recognised.
207		487
208	=back	488	=back
209		489
210	=item cf::attach_to_type $object_type, $subtype, ...	490	Example, define an attachment called "sockpuppet" that calls the given
		491	event handler when a monster attacks:
211		492
212	Attach handlers for a specific object type (e.g. TRANSPORT) and	493	cf::object::attachment sockpuppet =>
213	subtype. If C<$subtype> is zero or undef, matches all objects of the given	494	on_skill_attack => sub {
214	type.	495	my ($self, $victim) = @_;
215		496	...
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	}	497	}
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	498	}
455	}
456		499
457	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	500	=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		501
485	Just because you have a perl object does not mean that the corresponding	502	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	503	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	504	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	505	can be used to test for existence of the C object part without causing an
489	exception.	506	exception.
490		507
		508	=cut
		509
		510	# the following variables are defined in .xs and must not be re-created
		511	our @CB_GLOBAL = (); # registry for all global events
		512	our @CB_ATTACHABLE = (); # registry for all attachables
		513	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		514	our @CB_PLAYER = ();
		515	our @CB_CLIENT = ();
		516	our @CB_TYPE = (); # registry for type (cf-object class) based events
		517	our @CB_MAP = ();
		518
		519	my %attachment;
		520
		521	sub cf::attachable::thawer_merge {
		522	# simply override everything except _meta
		523	local $_[0]{_meta};
		524	%{$_[0]} = %{$_[1]};
		525	}
		526
		527	sub _attach_cb($$$$) {
		528	my ($registry, $event, $prio, $cb) = @_;
		529
		530	use sort 'stable';
		531
		532	$cb = [$prio, $cb];
		533
		534	@{$registry->[$event]} = sort
		535	{ $a->[0] cmp $b->[0] }
		536	@{$registry->[$event] || []}, $cb;
		537	}
		538
		539	# hack
		540	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		541
		542	# attach handles attaching event callbacks
		543	# the only thing the caller has to do is pass the correct
		544	# registry (== where the callback attaches to).
		545	sub _attach {
		546	my ($registry, $klass, @arg) = @_;
		547
		548	my $object_type;
		549	my $prio = 0;
		550	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		551
		552	#TODO: get rid of this hack
		553	if ($attachable_klass{$klass}) {
		554	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		555	}
		556
		557	while (@arg) {
		558	my $type = shift @arg;
		559
		560	if ($type eq "prio") {
		561	$prio = shift @arg;
		562
		563	} elsif ($type eq "type") {
		564	$object_type = shift @arg;
		565	$registry = $CB_TYPE[$object_type] ||= [];
		566
		567	} elsif ($type eq "subtype") {
		568	defined $object_type or Carp::croak "subtype specified without type";
		569	my $object_subtype = shift @arg;
		570	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		571
		572	} elsif ($type eq "package") {
		573	my $pkg = shift @arg;
		574
		575	while (my ($name, $id) = each %cb_id) {
		576	if (my $cb = $pkg->can ($name)) {
		577	_attach_cb $registry, $id, $prio, $cb;
		578	}
		579	}
		580
		581	} elsif (exists $cb_id{$type}) {
		582	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		583
		584	} elsif (ref $type) {
		585	warn "attaching objects not supported, ignoring.\n";
		586
		587	} else {
		588	shift @arg;
		589	warn "attach argument '$type' not supported, ignoring.\n";
		590	}
		591	}
		592	}
		593
		594	sub _object_attach {
		595	my ($obj, $name, %arg) = @_;
		596
		597	return if exists $obj->{_attachment}{$name};
		598
		599	if (my $attach = $attachment{$name}) {
		600	my $registry = $obj->registry;
		601
		602	for (@$attach) {
		603	my ($klass, @attach) = @$_;
		604	_attach $registry, $klass, @attach;
		605	}
		606
		607	$obj->{$name} = \%arg;
		608	} else {
		609	warn "object uses attachment '$name' that is not available, postponing.\n";
		610	}
		611
		612	$obj->{_attachment}{$name} = undef;
		613	}
		614
		615	sub cf::attachable::attach {
		616	if (ref $_[0]) {
		617	_object_attach @_;
		618	} else {
		619	_attach shift->_attach_registry, @_;
		620	}
		621	};
		622
		623	# all those should be optimised
		624	sub cf::attachable::detach {
		625	my ($obj, $name) = @_;
		626
		627	if (ref $obj) {
		628	delete $obj->{_attachment}{$name};
		629	reattach ($obj);
		630	} else {
		631	Carp::croak "cannot, currently, detach class attachments";
		632	}
		633	};
		634
		635	sub cf::attachable::attached {
		636	my ($obj, $name) = @_;
		637
		638	exists $obj->{_attachment}{$name}
		639	}
		640
		641	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		642	eval "#line " . __LINE__ . " 'cf.pm'
		643	sub cf::\L$klass\E::_attach_registry {
		644	(\\\@CB_$klass, KLASS_$klass)
		645	}
		646
		647	sub cf::\L$klass\E::attachment {
		648	my \$name = shift;
		649
		650	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		651	}
		652	";
		653	die if $@;
		654	}
		655
		656	our $override;
		657	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		658
		659	sub override {
		660	$override = 1;
		661	@invoke_results = ();
		662	}
		663
		664	sub do_invoke {
		665	my $event = shift;
		666	my $callbacks = shift;
		667
		668	@invoke_results = ();
		669
		670	local $override;
		671
		672	for (@$callbacks) {
		673	eval { &{$_->[1]} };
		674
		675	if ($@) {
		676	warn "$@";
		677	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		678	override;
		679	}
		680
		681	return 1 if $override;
		682	}
		683
		684	0
		685	}
		686
		687	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		688
		689	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		690
		691	Generate an object-specific event with the given arguments.
		692
		693	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		694	removed in future versions), and there is no public API to access override
		695	results (if you must, access C<@cf::invoke_results> directly).
		696
491	=back	697	=back
492		698
493	=cut	699	=cut
494
495	*cf::object::valid =
496	*cf::player::valid =
497	*cf::client::valid =
498	*cf::map::valid = \&cf::_valid;
499		700
500	#############################################################################	701	#############################################################################
501	# object support	702	# object support
502		703
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 {	704	sub reattach {
		705	# basically do the same as instantiate, without calling instantiate
517	my ($obj) = @_;	706	my ($obj) = @_;
		707
		708	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		709
518	my $registry = $obj->registry;	710	my $registry = $obj->registry;
519		711
520	@$registry = ();	712	@$registry = ();
521		713
522	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	714	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
523		715
524	for my $name (keys %{ $obj->{_attachment} || {} }) {	716	for my $name (keys %{ $obj->{_attachment} || {} }) {
525	if (my $attach = $attachment{$name}) {	717	if (my $attach = $attachment{$name}) {
526	for (@$attach) {	718	for (@$attach) {
527	my ($klass, @attach) = @$_;	719	my ($klass, @attach) = @$_;
528	_attach @$registry, $klass, @attach;	720	_attach $registry, $klass, @attach;
529	}	721	}
530	} else {	722	} else {
531	warn "object uses attachment '$name' that is not available, postponing.\n";	723	warn "object uses attachment '$name' that is not available, postponing.\n";
532	}	724	}
533	}	725	}
534	}	726	}
535		727
536	sub object_freezer_save {	728	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	$$rdata . Dumper $objs
573	}
574
575	sub object_thawer_load {
576	my ($filename) = @_;
577
578	local $/;
579
580	my $av;
581
582	#TODO: use sysread etc.
583	if (open my $data, "<:raw:perlio", $filename) {
584	$data = <$data>;
585	if (open my $pst, "<:raw:perlio", "$filename.pst") {
586	$av = eval { (Storable::thaw <$pst>)->{objs} };
587	}
588	return ($data, $av);
589	}
590
591	()
592	}
593
594	attach_to_objects
595	prio => -1000000,	729	prio => -1000000,
		730	on_instantiate => sub {
		731	my ($obj, $data) = @_;
		732
		733	$data = from_json $data;
		734
		735	for (@$data) {
		736	my ($name, $args) = @$_;
		737
		738	$obj->attach ($name, %{$args || {} });
		739	}
		740	},
		741	on_reattach => \&reattach,
596	on_clone => sub {	742	on_clone => sub {
597	my ($src, $dst) = @_;	743	my ($src, $dst) = @_;
598		744
599	@{$dst->registry} = @{$src->registry};	745	@{$dst->registry} = @{$src->registry};
600		746
601	%$dst = %$src;	747	%$dst = %$src;
602		748
603	%{$dst->{_attachment}} = %{$src->{_attachment}}	749	%{$dst->{_attachment}} = %{$src->{_attachment}}
604	if exists $src->{_attachment};	750	if exists $src->{_attachment};
605	},	751	},
606	;	752	);
		753
		754	sub object_freezer_save {
		755	my ($filename, $rdata, $objs) = @_;
		756
		757	sync_job {
		758	if (length $$rdata) {
		759	warn sprintf "saving %s (%d,%d)\n",
		760	$filename, length $$rdata, scalar @$objs;
		761
		762	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		763	chmod SAVE_MODE, $fh;
		764	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		765	aio_fsync $fh if $cf::USE_FSYNC;
		766	close $fh;
		767
		768	if (@$objs) {
		769	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		770	chmod SAVE_MODE, $fh;
		771	my $data = Storable::nfreeze { version => 1, objs => $objs };
		772	aio_write $fh, 0, (length $data), $data, 0;
		773	aio_fsync $fh if $cf::USE_FSYNC;
		774	close $fh;
		775	aio_rename "$filename.pst~", "$filename.pst";
		776	}
		777	} else {
		778	aio_unlink "$filename.pst";
		779	}
		780
		781	aio_rename "$filename~", $filename;
		782	} else {
		783	warn "FATAL: $filename~: $!\n";
		784	}
		785	} else {
		786	aio_unlink $filename;
		787	aio_unlink "$filename.pst";
		788	}
		789
		790	#d##TODO# nuke non .map-files if exist
		791	if ($filename =~ s/\.map$//) {
		792	aio_unlink $filename;
		793	aio_unlink "$filename.pst";
		794	}
		795	}
		796	}
		797
		798	sub object_freezer_as_string {
		799	my ($rdata, $objs) = @_;
		800
		801	use Data::Dumper;
		802
		803	$$rdata . Dumper $objs
		804	}
		805
		806	sub object_thawer_load {
		807	my ($filename) = @_;
		808
		809	my ($data, $av);
		810
		811	#d#TODO remove .map if file does not exist
		812	aio_stat $filename and $filename =~ s/\.map$//;
		813
		814	(aio_load $filename, $data) >= 0
		815	or return;
		816
		817	unless (aio_stat "$filename.pst") {
		818	(aio_load "$filename.pst", $av) >= 0
		819	or return;
		820	$av = eval { (Storable::thaw $av)->{objs} };
		821	}
		822
		823	warn sprintf "loading %s (%d)\n",
		824	$filename, length $data, scalar @{$av || []};#d#
		825	return ($data, $av);
		826	}
607		827
608	#############################################################################	828	#############################################################################
609	# command handling &c	829	# command handling &c
610		830
611	=item cf::register_command $name => \&callback($ob,$args);	831	=item cf::register_command $name => \&callback($ob,$args);
…		…
634	=cut	854	=cut
635		855
636	sub register_extcmd {	856	sub register_extcmd {
637	my ($name, $cb) = @_;	857	my ($name, $cb) = @_;
638		858
639	my $caller = caller;
640	#warn "registering extcmd '$name' to '$caller'";
641
642	$EXTCMD{$name} = [$cb, $caller];	859	$EXTCMD{$name} = $cb;
643	}	860	}
644		861
645	attach_to_players	862	cf::player->attach (
646	on_command => sub {	863	on_command => sub {
647	my ($pl, $name, $params) = @_;	864	my ($pl, $name, $params) = @_;
648		865
649	my $cb = $COMMAND{$name}	866	my $cb = $COMMAND{$name}
650	or return;	867	or return;
…		…
660		877
661	my $msg = eval { from_json $buf };	878	my $msg = eval { from_json $buf };
662		879
663	if (ref $msg) {	880	if (ref $msg) {
664	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	881	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
665	if (my %reply = $cb->[0]->($pl, $msg)) {	882	if (my %reply = $cb->($pl, $msg)) {
666	$pl->ext_reply ($msg->{msgid}, %reply);	883	$pl->ext_reply ($msg->{msgid}, %reply);
667	}	884	}
668	}	885	}
669	} else {	886	} else {
670	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	887	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
671	}	888	}
672		889
673	cf::override;	890	cf::override;
674	},	891	},
675	;	892	);
676
677	sub register {
678	my ($base, $pkg) = @_;
679
680	#TODO
681	}
682		893
683	sub load_extension {	894	sub load_extension {
684	my ($path) = @_;	895	my ($path) = @_;
685		896
686	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	897	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
687	my $base = $1;	898	my $base = $1;
688	my $pkg = $1;	899	my $pkg = $1;
689	$pkg =~ s/[^[:word:]]/_/g;	900	$pkg =~ s/[^[:word:]]/_/g;
690	$pkg = "ext::$pkg";	901	$pkg = "ext::$pkg";
691		902
692	warn "loading '$path' into '$pkg'\n";	903	warn "... loading '$path' into '$pkg'\n";
693		904
694	open my $fh, "<:utf8", $path	905	open my $fh, "<:utf8", $path
695	or die "$path: $!";	906	or die "$path: $!";
696		907
697	my $source =	908	my $source =
698	"package $pkg; use strict; use utf8;\n"	909	"package $pkg; use strict; use utf8;\n"
699	. "#line 1 \"$path\"\n{\n"	910	. "#line 1 \"$path\"\n{\n"
700	. (do { local $/; <$fh> })	911	. (do { local $/; <$fh> })
701	. "\n};\n1";	912	. "\n};\n1";
702		913
703	eval $source	914	unless (eval $source) {
704	or die $@ ? "$path: $@\n"	915	my $msg = $@ ? "$path: $@\n"
705	: "extension disabled.\n";	916	: "extension disabled.\n";
706		917	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
707	push @exts, $pkg;	918	warn $@;
708	$ext_pkg{$base} = $pkg;	919	warn "mandatory extension failed to load, exiting.\n";
709		920	exit 1;
710	# no strict 'refs';	921	}
711	# @{"$pkg\::ISA"} = ext::;	922	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	# }	923	}
726		924
727	# remove commands	925	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	}	926	}
752		927
753	sub load_extensions {	928	sub load_extensions {
754	for my $ext (<$LIBDIR/*.ext>) {	929	for my $ext (<$LIBDIR/*.ext>) {
755	next unless -r $ext;	930	next unless -r $ext;
…		…
759	} or warn "$ext not loaded: $@";	934	} or warn "$ext not loaded: $@";
760	}	935	}
761	}	936	}
762		937
763	#############################################################################	938	#############################################################################
764	# load/save/clean perl data associated with a map
765		939
766	*cf::mapsupport::on_clean = sub {	940	=head2 CORE EXTENSIONS
		941
		942	Functions and methods that extend core crossfire objects.
		943
		944	=cut
		945
		946	package cf::player;
		947
		948	use Coro::AIO;
		949
		950	=head3 cf::player
		951
		952	=over 4
		953
		954	=item cf::player::find $login
		955
		956	Returns the given player object, loading it if necessary (might block).
		957
		958	=cut
		959
		960	sub playerdir($) {
		961	cf::localdir
		962	. "/"
		963	. cf::playerdir
		964	. "/"
		965	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		966	}
		967
		968	sub path($) {
		969	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		970
		971	(playerdir $login) . "/$login.pl"
		972	}
		973
		974	sub find_active($) {
		975	$cf::PLAYER{$_[0]}
		976	and $cf::PLAYER{$_[0]}->active
		977	and $cf::PLAYER{$_[0]}
		978	}
		979
		980	sub exists($) {
		981	my ($login) = @_;
		982
		983	$cf::PLAYER{$login}
		984	or cf::sync_job { !aio_stat path $login }
		985	}
		986
		987	sub find($) {
		988	return $cf::PLAYER{$_[0]} || do {
		989	my $login = $_[0];
		990
		991	my $guard = cf::lock_acquire "user_find:$login";
		992
		993	$cf::PLAYER{$_[0]} || do {
		994	my $pl = load_pl path $login
		995	or return;
		996	$cf::PLAYER{$login} = $pl
		997	}
		998	}
		999	}
		1000
		1001	sub save($) {
		1002	my ($pl) = @_;
		1003
		1004	return if $pl->{deny_save};
		1005
		1006	my $path = path $pl;
		1007	my $guard = cf::lock_acquire "user_save:$path";
		1008
		1009	return if $pl->{deny_save};
		1010
		1011	aio_mkdir playerdir $pl, 0770;
		1012	$pl->{last_save} = $cf::RUNTIME;
		1013
		1014	$pl->save_pl ($path);
		1015	Coro::cede;
		1016	}
		1017
		1018	sub new($) {
		1019	my ($login) = @_;
		1020
		1021	my $self = create;
		1022
		1023	$self->ob->name ($login);
		1024	$self->{deny_save} = 1;
		1025
		1026	$cf::PLAYER{$login} = $self;
		1027
		1028	$self
		1029	}
		1030
		1031	=item $pl->quit_character
		1032
		1033	Nukes the player without looking back. If logged in, the connection will
		1034	be destroyed. May block for a long time.
		1035
		1036	=cut
		1037
		1038	sub quit_character {
		1039	my ($pl) = @_;
		1040
		1041	$pl->{deny_save} = 1;
		1042	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1043
		1044	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1045	$pl->deactivate;
		1046	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1047	$pl->ns->destroy if $pl->ns;
		1048
		1049	my $path = playerdir $pl;
		1050	my $temp = "$path~$cf::RUNTIME~deleting~";
		1051	aio_rename $path, $temp;
		1052	delete $cf::PLAYER{$pl->ob->name};
		1053	$pl->destroy;
		1054	IO::AIO::aio_rmtree $temp;
		1055	}
		1056
		1057	=item cf::player::list_logins
		1058
		1059	Returns am arrayref of all valid playernames in the system, can take a
		1060	while and may block, so not sync_job-capable, ever.
		1061
		1062	=cut
		1063
		1064	sub list_logins {
		1065	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1066	or return [];
		1067
		1068	my @logins;
		1069
		1070	for my $login (@$dirs) {
		1071	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1072	aio_read $fh, 0, 512, my $buf, 0 or next;
		1073	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1074
		1075	utf8::decode $login;
		1076	push @logins, $login;
		1077	}
		1078
		1079	\@logins
		1080	}
		1081
		1082	=item $player->maps
		1083
		1084	Returns an arrayref of map paths that are private for this
		1085	player. May block.
		1086
		1087	=cut
		1088
		1089	sub maps($) {
		1090	my ($pl) = @_;
		1091
		1092	$pl = ref $pl ? $pl->ob->name : $pl;
		1093
		1094	my $files = aio_readdir playerdir $pl
		1095	or return;
		1096
		1097	my @paths;
		1098
		1099	for (@$files) {
		1100	utf8::decode $_;
		1101	next if /\.(?:pl|pst)$/;
		1102	next unless /^$PATH_SEP/o;
		1103
		1104	push @paths, cf::map::normalise "~$pl/$_";
		1105	}
		1106
		1107	\@paths
		1108	}
		1109
		1110	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1111
		1112	Sends an ext reply to the player.
		1113
		1114	=cut
		1115
		1116	sub ext_reply($$$%) {
		1117	my ($self, $id, %msg) = @_;
		1118
		1119	$msg{msgid} = $id;
		1120
		1121	$self->send ("ext " . cf::to_json \%msg);
		1122	}
		1123
		1124	package cf;
		1125
		1126	=back
		1127
		1128
		1129	=head3 cf::map
		1130
		1131	=over 4
		1132
		1133	=cut
		1134
		1135	package cf::map;
		1136
		1137	use Fcntl;
		1138	use Coro::AIO;
		1139
		1140	use overload
		1141	'""' => \&as_string,
		1142	fallback => 1;
		1143
		1144	our $MAX_RESET = 3600;
		1145	our $DEFAULT_RESET = 3000;
		1146
		1147	sub generate_random_map {
		1148	my ($self, $rmp) = @_;
		1149	# mit "rum" bekleckern, nicht
		1150	$self->_create_random_map (
		1151	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1152	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1153	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1154	$rmp->{exit_on_final_map},
		1155	$rmp->{xsize}, $rmp->{ysize},
		1156	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1157	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1158	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1159	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1160	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1161	(cf::region::find $rmp->{region}), $rmp->{custom}
		1162	)
		1163	}
		1164
		1165	=item cf::map->register ($regex, $prio)
		1166
		1167	Register a handler for the map path matching the given regex at the
		1168	givne priority (higher is better, built-in handlers have priority 0, the
		1169	default).
		1170
		1171	=cut
		1172
		1173	sub register {
		1174	my (undef, $regex, $prio) = @_;
		1175	my $pkg = caller;
		1176
		1177	no strict;
		1178	push @{"$pkg\::ISA"}, __PACKAGE__;
		1179
		1180	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1181	}
		1182
		1183	# also paths starting with '/'
		1184	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1185
		1186	sub thawer_merge {
		1187	my ($self, $merge) = @_;
		1188
		1189	# we have to keep some variables in memory intact
		1190	local $self->{path};
		1191	local $self->{load_path};
		1192	local $self->{deny_save};
		1193	local $self->{deny_reset};
		1194
		1195	$self->SUPER::thawer_merge ($merge);
		1196	}
		1197
		1198	sub normalise {
		1199	my ($path, $base) = @_;
		1200
		1201	$path = "$path"; # make sure its a string
		1202
		1203	$path =~ s/\.map$//;
		1204
		1205	# map plan:
		1206	#
		1207	# /! non-realised random map exit (special hack!)
		1208	# {... are special paths that are not being touched
		1209	# ?xxx/... are special absolute paths
		1210	# ?random/... random maps
		1211	# /... normal maps
		1212	# ~user/... per-player map of a specific user
		1213
		1214	$path =~ s/$PATH_SEP/\//go;
		1215
		1216	# treat it as relative path if it starts with
		1217	# something that looks reasonable
		1218	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1219	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1220
		1221	$base =~ s{[^/]+/?$}{};
		1222	$path = "$base/$path";
		1223	}
		1224
		1225	for ($path) {
		1226	redo if s{//}{/};
		1227	redo if s{/\.?/}{/};
		1228	redo if s{/[^/]+/\.\./}{/};
		1229	}
		1230
		1231	$path
		1232	}
		1233
		1234	sub new_from_path {
		1235	my (undef, $path, $base) = @_;
		1236
		1237	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1238
		1239	$path = normalise $path, $base;
		1240
		1241	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1242	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1243	my $self = bless cf::map::new, $pkg;
		1244	$self->{path} = $path; $self->path ($path);
		1245	$self->init; # pass $1 etc.
		1246	return $self;
		1247	}
		1248	}
		1249
		1250	Carp::carp "unable to resolve path '$path' (base '$base').";
		1251	()
		1252	}
		1253
		1254	sub init {
		1255	my ($self) = @_;
		1256
		1257	$self
		1258	}
		1259
		1260	sub as_string {
		1261	my ($self) = @_;
		1262
		1263	"$self->{path}"
		1264	}
		1265
		1266	# the displayed name, this is a one way mapping
		1267	sub visible_name {
		1268	&as_string
		1269	}
		1270
		1271	# the original (read-only) location
		1272	sub load_path {
		1273	my ($self) = @_;
		1274
		1275	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1276	}
		1277
		1278	# the temporary/swap location
		1279	sub save_path {
		1280	my ($self) = @_;
		1281
		1282	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1283	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1284	}
		1285
		1286	# the unique path, undef == no special unique path
		1287	sub uniq_path {
		1288	my ($self) = @_;
		1289
		1290	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1291	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1292	}
		1293
		1294	# and all this just because we cannot iterate over
		1295	# all maps in C++...
		1296	sub change_all_map_light {
		1297	my ($change) = @_;
		1298
		1299	$_->change_map_light ($change)
		1300	for grep $_->outdoor, values %cf::MAP;
		1301	}
		1302
		1303	sub unlink_save {
		1304	my ($self) = @_;
		1305
		1306	utf8::encode (my $save = $self->save_path);
		1307	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1308	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1309
		1310	#d#TODO remove .map and also nuke
		1311	$save =~ s/\.map// or return;#d#
		1312	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
		1313	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
		1314	}
		1315
		1316	sub load_header_from($) {
		1317	my ($self, $path) = @_;
		1318
		1319	utf8::encode $path;
		1320	#aio_open $path, O_RDONLY, 0
		1321	# or return;
		1322
		1323	$self->_load_header ($path)
		1324	or return;
		1325
		1326	$self->{load_path} = $path;
		1327
		1328	1
		1329	}
		1330
		1331	sub load_header_orig {
		1332	my ($self) = @_;
		1333
		1334	$self->load_header_from ($self->load_path)
		1335	}
		1336
		1337	sub load_header_temp {
		1338	my ($self) = @_;
		1339
		1340	$self->load_header_from ($self->save_path)
		1341	}
		1342
		1343	sub prepare_temp {
		1344	my ($self) = @_;
		1345
		1346	$self->last_access ((delete $self->{last_access})
		1347	|| $cf::RUNTIME); #d#
		1348	# safety
		1349	$self->{instantiate_time} = $cf::RUNTIME
		1350	if $self->{instantiate_time} > $cf::RUNTIME;
		1351	}
		1352
		1353	sub prepare_orig {
		1354	my ($self) = @_;
		1355
		1356	$self->{load_original} = 1;
		1357	$self->{instantiate_time} = $cf::RUNTIME;
		1358	$self->last_access ($cf::RUNTIME);
		1359	$self->instantiate;
		1360	}
		1361
		1362	sub load_header {
		1363	my ($self) = @_;
		1364
		1365	if ($self->load_header_temp) {
		1366	$self->prepare_temp;
		1367	} else {
		1368	$self->load_header_orig
		1369	or return;
		1370	$self->prepare_orig;
		1371	}
		1372
		1373	1
		1374	}
		1375
		1376	sub find;
		1377	sub find {
		1378	my ($path, $origin) = @_;
		1379
		1380	$path = normalise $path, $origin && $origin->path;
		1381
		1382	cf::lock_wait "map_find:$path";
		1383
		1384	$cf::MAP{$path} || do {
		1385	my $guard = cf::lock_acquire "map_find:$path";
		1386	my $map = new_from_path cf::map $path
		1387	or return;
		1388
		1389	$map->{last_save} = $cf::RUNTIME;
		1390
		1391	$map->load_header
		1392	or return;
		1393
		1394	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1395	# doing this can freeze the server in a sync job, obviously
		1396	#$cf::WAIT_FOR_TICK->wait;
		1397	$map->reset;
		1398	undef $guard;
		1399	return find $path;
		1400	}
		1401
		1402	$cf::MAP{$path} = $map
		1403	}
		1404	}
		1405
		1406	sub pre_load { }
		1407	sub post_load { }
		1408
		1409	sub load {
		1410	my ($self) = @_;
		1411
		1412	local $self->{deny_reset} = 1; # loading can take a long time
		1413
		1414	my $path = $self->{path};
		1415	my $guard = cf::lock_acquire "map_load:$path";
		1416
		1417	return if $self->in_memory != cf::MAP_SWAPPED;
		1418
		1419	$self->in_memory (cf::MAP_LOADING);
		1420
		1421	$self->alloc;
		1422
		1423	$self->pre_load;
		1424
		1425	$self->_load_objects ($self->{load_path}, 1)
		1426	or return;
		1427
		1428	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1429	if delete $self->{load_original};
		1430
		1431	if (my $uniq = $self->uniq_path) {
		1432	utf8::encode $uniq;
		1433	if (aio_open $uniq, O_RDONLY, 0) {
		1434	$self->clear_unique_items;
		1435	$self->_load_objects ($uniq, 0);
		1436	}
		1437	}
		1438
		1439	Coro::cede;
		1440
		1441	# now do the right thing for maps
		1442	$self->link_multipart_objects;
		1443
		1444	unless ($self->{deny_activate}) {
		1445	$self->decay_objects;
		1446	$self->fix_auto_apply;
		1447	$self->update_buttons;
		1448	Coro::cede;
		1449	$self->set_darkness_map;
		1450	$self->difficulty ($self->estimate_difficulty)
		1451	unless $self->difficulty;
		1452	Coro::cede;
		1453	$self->activate;
		1454	}
		1455
		1456	$self->post_load;
		1457
		1458	$self->in_memory (cf::MAP_IN_MEMORY);
		1459	}
		1460
		1461	sub customise_for {
		1462	my ($self, $ob) = @_;
		1463
		1464	return find "~" . $ob->name . "/" . $self->{path}
		1465	if $self->per_player;
		1466
		1467	$self
		1468	}
		1469
		1470	# find and load all maps in the 3x3 area around a map
		1471	sub load_diag {
767	my ($map) = @_;	1472	my ($map) = @_;
768		1473
769	my $path = $map->tmpname;	1474	my @diag; # diagonal neighbours
770	defined $path or return;
771		1475
772	unlink "$path.pst";	1476	for (0 .. 3) {
773	};	1477	my $neigh = $map->tile_path ($_)
		1478	or next;
		1479	$neigh = find $neigh, $map
		1480	or next;
		1481	$neigh->load;
774		1482
775	attach_to_maps prio => -10000, package => cf::mapsupport::;	1483	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1484	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1485	}
776		1486
777	#############################################################################	1487	for (@diag) {
778	# load/save perl data associated with player->ob objects	1488	my $neigh = find @$_
779		1489	or next;
780	sub all_objects(@) {	1490	$neigh->load;
781	@_, map all_objects ($_->inv), @_	1491	}
782	}	1492	}
783		1493
784	# TODO: compatibility cruft, remove when no longer needed	1494	sub find_sync {
785	attach_to_players	1495	my ($path, $origin) = @_;
786	on_load => sub {
787	my ($pl, $path) = @_;
788		1496
789	for my $o (all_objects $pl->ob) {	1497	cf::sync_job { find $path, $origin }
790	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1498	}
791	$o->set_ob_key_value ("_perl_data");
792		1499
793	%$o = %{ Storable::thaw pack "H*", $value };	1500	sub do_load_sync {
		1501	my ($map) = @_;
		1502
		1503	cf::sync_job { $map->load };
		1504	}
		1505
		1506	our %MAP_PREFETCH;
		1507	our $MAP_PREFETCHER = undef;
		1508
		1509	sub find_async {
		1510	my ($path, $origin) = @_;
		1511
		1512	$path = normalise $path, $origin && $origin->{path};
		1513
		1514	if (my $map = $cf::MAP{$path}) {
		1515	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1516	}
		1517
		1518	undef $MAP_PREFETCH{$path};
		1519	$MAP_PREFETCHER ||= cf::async {
		1520	while (%MAP_PREFETCH) {
		1521	for my $path (keys %MAP_PREFETCH) {
		1522	my $map = find $path
		1523	or next;
		1524	$map->load;
		1525
		1526	delete $MAP_PREFETCH{$path};
794	}	1527	}
795	}	1528	}
		1529	undef $MAP_PREFETCHER;
		1530	};
		1531	$MAP_PREFETCHER->prio (6);
		1532
		1533	()
		1534	}
		1535
		1536	sub save {
		1537	my ($self) = @_;
		1538
		1539	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1540
		1541	$self->{last_save} = $cf::RUNTIME;
		1542
		1543	return unless $self->dirty;
		1544
		1545	my $save = $self->save_path; utf8::encode $save;
		1546	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1547
		1548	$self->{load_path} = $save;
		1549
		1550	return if $self->{deny_save};
		1551
		1552	local $self->{last_access} = $self->last_access;#d#
		1553
		1554	cf::async {
		1555	$_->contr->save for $self->players;
		1556	};
		1557
		1558	if ($uniq) {
		1559	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1560	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1561	} else {
		1562	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
796	},	1563	}
797	;	1564	}
798		1565
799	#############################################################################	1566	sub swap_out {
		1567	my ($self) = @_;
800		1568
801	=head2 CORE EXTENSIONS	1569	# save first because save cedes
		1570	$self->save;
802		1571
803	Functions and methods that extend core crossfire objects.	1572	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1573
		1574	return if $self->players;
		1575	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1576	return if $self->{deny_save};
		1577
		1578	$self->clear;
		1579	$self->in_memory (cf::MAP_SWAPPED);
		1580	}
		1581
		1582	sub reset_at {
		1583	my ($self) = @_;
		1584
		1585	# TODO: safety, remove and allow resettable per-player maps
		1586	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1587	return 1e99 if $self->{deny_reset};
		1588
		1589	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1590	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1591
		1592	$time + $to
		1593	}
		1594
		1595	sub should_reset {
		1596	my ($self) = @_;
		1597
		1598	$self->reset_at <= $cf::RUNTIME
		1599	}
		1600
		1601	sub reset {
		1602	my ($self) = @_;
		1603
		1604	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1605
		1606	return if $self->players;
		1607	return if $self->isa ("ext::map_per_player");#d#
		1608
		1609	warn "resetting map ", $self->path;#d#
		1610
		1611	delete $cf::MAP{$self->path};
		1612
		1613	$self->in_memory (cf::MAP_SWAPPED);
		1614	$self->clear;
		1615
		1616	$_->clear_links_to ($self) for values %cf::MAP;
		1617
		1618	$self->unlink_save;
		1619	$self->destroy;
		1620	}
		1621
		1622	my $nuke_counter = "aaaa";
		1623
		1624	sub nuke {
		1625	my ($self) = @_;
		1626
		1627	delete $cf::MAP{$self->path};
		1628
		1629	$self->unlink_save;
		1630
		1631	bless $self, "cf::map";
		1632	delete $self->{deny_reset};
		1633	$self->{deny_save} = 1;
		1634	$self->reset_timeout (1);
		1635	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1636
		1637	$cf::MAP{$self->path} = $self;
		1638
		1639	$self->reset; # polite request, might not happen
		1640	}
		1641
		1642	=item cf::map::unique_maps
		1643
		1644	Returns an arrayref of paths of all shared maps that have
		1645	instantiated unique items. May block.
		1646
		1647	=cut
		1648
		1649	sub unique_maps() {
		1650	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1651	or return;
		1652
		1653	my @paths;
		1654
		1655	for (@$files) {
		1656	utf8::decode $_;
		1657	next if /\.pst$/;
		1658	next unless /^$PATH_SEP/o;
		1659
		1660	push @paths, cf::map::normalise $_;
		1661	}
		1662
		1663	\@paths
		1664	}
		1665
		1666	package cf;
		1667
		1668	=back
		1669
		1670	=head3 cf::object
		1671
		1672	=cut
		1673
		1674	package cf::object;
804		1675
805	=over 4	1676	=over 4
806		1677
807	=item cf::player::exists $login	1678	=item $ob->inv_recursive
808		1679
809	Returns true when the given account exists.	1680	Returns the inventory of the object _and_ their inventories, recursively.
810		1681
811	=cut	1682	=cut
812		1683
813	sub cf::player::exists($) {	1684	sub inv_recursive_;
814	cf::player::find $_[0]	1685	sub inv_recursive_ {
815	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1686	map { $_, inv_recursive_ $_->inv } @_
816	}	1687	}
		1688
		1689	sub inv_recursive {
		1690	inv_recursive_ inv $_[0]
		1691	}
		1692
		1693	package cf;
		1694
		1695	=back
		1696
		1697	=head3 cf::object::player
		1698
		1699	=over 4
817		1700
818	=item $player_object->reply ($npc, $msg[, $flags])	1701	=item $player_object->reply ($npc, $msg[, $flags])
819		1702
820	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1703	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	1704	can be C<undef>. Does the right thing when the player is currently in a
…		…
823		1706
824	=cut	1707	=cut
825		1708
826	# rough implementation of a future "reply" method that works	1709	# rough implementation of a future "reply" method that works
827	# with dialog boxes.	1710	# with dialog boxes.
		1711	#TODO: the first argument must go, split into a $npc->reply_to ( method
828	sub cf::object::player::reply($$$;$) {	1712	sub cf::object::player::reply($$$;$) {
829	my ($self, $npc, $msg, $flags) = @_;	1713	my ($self, $npc, $msg, $flags) = @_;
830		1714
831	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1715	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
832		1716
…		…
836	$msg = $npc->name . " says: $msg" if $npc;	1720	$msg = $npc->name . " says: $msg" if $npc;
837	$self->message ($msg, $flags);	1721	$self->message ($msg, $flags);
838	}	1722	}
839	}	1723	}
840		1724
841	=item $player->ext_reply ($msgid, $msgtype, %msg)
842
843	Sends an ext reply to the player.
844
845	=cut
846
847	sub cf::player::ext_reply($$$%) {
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")	1725	=item $player_object->may ("access")
856		1726
857	Returns wether the given player is authorized to access resource "access"	1727	Returns wether the given player is authorized to access resource "access"
858	(e.g. "command_wizcast").	1728	(e.g. "command_wizcast").
859		1729
…		…
866	(ref $cf::CFG{"may_$access"}	1736	(ref $cf::CFG{"may_$access"}
867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1737	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
868	: $cf::CFG{"may_$access"})	1738	: $cf::CFG{"may_$access"})
869	}	1739	}
870		1740
871	=cut	1741	=item $player_object->enter_link
872		1742
873	#############################################################################	1743	Freezes the player and moves him/her to a special map (C<{link}>).
		1744
		1745	The player should be reasonably safe there for short amounts of time. You
		1746	I<MUST> call C<leave_link> as soon as possible, though.
		1747
		1748	Will never block.
		1749
		1750	=item $player_object->leave_link ($map, $x, $y)
		1751
		1752	Moves the player out of the special C<{link}> map onto the specified
		1753	map. If the map is not valid (or omitted), the player will be moved back
		1754	to the location he/she was before the call to C<enter_link>, or, if that
		1755	fails, to the emergency map position.
		1756
		1757	Might block.
		1758
		1759	=cut
		1760
		1761	sub link_map {
		1762	unless ($LINK_MAP) {
		1763	$LINK_MAP = cf::map::find "{link}"
		1764	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1765	$LINK_MAP->load;
		1766	}
		1767
		1768	$LINK_MAP
		1769	}
		1770
		1771	sub cf::object::player::enter_link {
		1772	my ($self) = @_;
		1773
		1774	$self->deactivate_recursive;
		1775
		1776	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1777
		1778	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1779	if $self->map;
		1780
		1781	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1782	}
		1783
		1784	sub cf::object::player::leave_link {
		1785	my ($self, $map, $x, $y) = @_;
		1786
		1787	my $link_pos = delete $self->{_link_pos};
		1788
		1789	unless ($map) {
		1790	# restore original map position
		1791	($map, $x, $y) = @{ $link_pos || [] };
		1792	$map = cf::map::find $map;
		1793
		1794	unless ($map) {
		1795	($map, $x, $y) = @$EMERGENCY_POSITION;
		1796	$map = cf::map::find $map
		1797	or die "FATAL: cannot load emergency map\n";
		1798	}
		1799	}
		1800
		1801	($x, $y) = (-1, -1)
		1802	unless (defined $x) && (defined $y);
		1803
		1804	# use -1 or undef as default coordinates, not 0, 0
		1805	($x, $y) = ($map->enter_x, $map->enter_y)
		1806	if $x <=0 && $y <= 0;
		1807
		1808	$map->load;
		1809	$map->load_diag;
		1810
		1811	return unless $self->contr->active;
		1812	$self->activate_recursive;
		1813	$self->enter_map ($map, $x, $y);
		1814	}
		1815
		1816	cf::player->attach (
		1817	on_logout => sub {
		1818	my ($pl) = @_;
		1819
		1820	# abort map switching before logout
		1821	if ($pl->ob->{_link_pos}) {
		1822	cf::sync_job {
		1823	$pl->ob->leave_link
		1824	};
		1825	}
		1826	},
		1827	on_login => sub {
		1828	my ($pl) = @_;
		1829
		1830	# try to abort aborted map switching on player login :)
		1831	# should happen only on crashes
		1832	if ($pl->ob->{_link_pos}) {
		1833	$pl->ob->enter_link;
		1834	(async {
		1835	# we need this sleep as the login has a concurrent enter_exit running
		1836	# and this sleep increases chances of the player not ending up in scorn
		1837	$pl->ob->reply (undef,
		1838	"There was an internal problem at your last logout, "
		1839	. "the server will try to bring you to your intended destination in a second.",
		1840	cf::NDI_RED);
		1841	Coro::Timer::sleep 1;
		1842	$pl->ob->leave_link;
		1843	})->prio (2);
		1844	}
		1845	},
		1846	);
		1847
		1848	=item $player_object->goto ($path, $x, $y)
		1849
		1850	=cut
		1851
		1852	sub cf::object::player::goto {
		1853	my ($self, $path, $x, $y) = @_;
		1854
		1855	$self->enter_link;
		1856
		1857	(async {
		1858	my $map = eval {
		1859	my $map = cf::map::find $path;
		1860	$map = $map->customise_for ($self) if $map;
		1861	$map
		1862	} or
		1863	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1864
		1865	$self->leave_link ($map, $x, $y);
		1866	})->prio (1);
		1867	}
		1868
		1869	=item $player_object->enter_exit ($exit_object)
		1870
		1871	=cut
		1872
		1873	sub parse_random_map_params {
		1874	my ($spec) = @_;
		1875
		1876	my $rmp = { # defaults
		1877	xsize => (cf::rndm 15, 40),
		1878	ysize => (cf::rndm 15, 40),
		1879	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1880	#layout => string,
		1881	};
		1882
		1883	for (split /\n/, $spec) {
		1884	my ($k, $v) = split /\s+/, $_, 2;
		1885
		1886	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1887	}
		1888
		1889	$rmp
		1890	}
		1891
		1892	sub prepare_random_map {
		1893	my ($exit) = @_;
		1894
		1895	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1896
		1897	# all this does is basically replace the /! path by
		1898	# a new random map path (?random/...) with a seed
		1899	# that depends on the exit object
		1900
		1901	my $rmp = parse_random_map_params $exit->msg;
		1902
		1903	if ($exit->map) {
		1904	$rmp->{region} = $exit->region->name;
		1905	$rmp->{origin_map} = $exit->map->path;
		1906	$rmp->{origin_x} = $exit->x;
		1907	$rmp->{origin_y} = $exit->y;
		1908	}
		1909
		1910	$rmp->{random_seed} ||= $exit->random_seed;
		1911
		1912	my $data = cf::to_json $rmp;
		1913	my $md5 = Digest::MD5::md5_hex $data;
		1914	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1915
		1916	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1917	aio_write $fh, 0, (length $data), $data, 0;
		1918	undef $fh;
		1919	aio_rename "$meta~", $meta;
		1920
		1921	$exit->slaying ("?random/$md5");
		1922	$exit->msg (undef);
		1923	}
		1924	}
		1925
		1926	sub cf::object::player::enter_exit {
		1927	my ($self, $exit) = @_;
		1928
		1929	return unless $self->type == cf::PLAYER;
		1930
		1931	if ($exit->slaying eq "/!") {
		1932	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1933	cf::sync_job { prepare_random_map $exit };
		1934	}
		1935
		1936	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		1937	my $hp = $exit->stats->hp;
		1938	my $sp = $exit->stats->sp;
		1939
		1940	$self->enter_link;
		1941
		1942	(async {
		1943	$self->deactivate_recursive; # just to be sure
		1944	unless (eval {
		1945	$self->goto ($slaying, $hp, $sp);
		1946
		1947	1;
		1948	}) {
		1949	$self->message ("Something went wrong deep within the crossfire server. "
		1950	. "I'll try to bring you back to the map you were before. "
		1951	. "Please report this to the dungeon master!",
		1952	cf::NDI_UNIQUE | cf::NDI_RED);
		1953
		1954	warn "ERROR in enter_exit: $@";
		1955	$self->leave_link;
		1956	}
		1957	})->prio (1);
		1958	}
		1959
		1960	=head3 cf::client
		1961
		1962	=over 4
		1963
		1964	=item $client->send_drawinfo ($text, $flags)
		1965
		1966	Sends a drawinfo packet to the client. Circumvents output buffering so
		1967	should not be used under normal circumstances.
		1968
		1969	=cut
		1970
		1971	sub cf::client::send_drawinfo {
		1972	my ($self, $text, $flags) = @_;
		1973
		1974	utf8::encode $text;
		1975	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1976	}
		1977
		1978
		1979	=item $success = $client->query ($flags, "text", \&cb)
		1980
		1981	Queues a query to the client, calling the given callback with
		1982	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1983	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1984
		1985	Queries can fail, so check the return code. Or don't, as queries will become
		1986	reliable at some point in the future.
		1987
		1988	=cut
		1989
		1990	sub cf::client::query {
		1991	my ($self, $flags, $text, $cb) = @_;
		1992
		1993	return unless $self->state == ST_PLAYING
		1994	|| $self->state == ST_SETUP
		1995	|| $self->state == ST_CUSTOM;
		1996
		1997	$self->state (ST_CUSTOM);
		1998
		1999	utf8::encode $text;
		2000	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2001
		2002	$self->send_packet ($self->{query_queue}[0][0])
		2003	if @{ $self->{query_queue} } == 1;
		2004	}
		2005
		2006	cf::client->attach (
		2007	on_reply => sub {
		2008	my ($ns, $msg) = @_;
		2009
		2010	# this weird shuffling is so that direct followup queries
		2011	# get handled first
		2012	my $queue = delete $ns->{query_queue}
		2013	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2014
		2015	(shift @$queue)->[1]->($msg);
		2016	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2017
		2018	push @{ $ns->{query_queue} }, @$queue;
		2019
		2020	if (@{ $ns->{query_queue} } == @$queue) {
		2021	if (@$queue) {
		2022	$ns->send_packet ($ns->{query_queue}[0][0]);
		2023	} else {
		2024	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2025	}
		2026	}
		2027	},
		2028	);
		2029
		2030	=item $client->async (\&cb)
		2031
		2032	Create a new coroutine, running the specified callback. The coroutine will
		2033	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2034	or loss of connection).
		2035
		2036	=cut
		2037
		2038	sub cf::client::async {
		2039	my ($self, $cb) = @_;
		2040
		2041	my $coro = &Coro::async ($cb);
		2042
		2043	$coro->on_destroy (sub {
		2044	delete $self->{_coro}{$coro+0};
		2045	});
		2046
		2047	$self->{_coro}{$coro+0} = $coro;
		2048
		2049	$coro
		2050	}
		2051
		2052	cf::client->attach (
		2053	on_destroy => sub {
		2054	my ($ns) = @_;
		2055
		2056	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2057	},
		2058	);
		2059
		2060	=back
		2061
874		2062
875	=head2 SAFE SCRIPTING	2063	=head2 SAFE SCRIPTING
876		2064
877	Functions that provide a safe environment to compile and execute	2065	Functions that provide a safe environment to compile and execute
878	snippets of perl code without them endangering the safety of the server	2066	snippets of perl code without them endangering the safety of the server
…		…
1030		2218
1031	{	2219	{
1032	my $path = cf::localdir . "/database.pst";	2220	my $path = cf::localdir . "/database.pst";
1033		2221
1034	sub db_load() {	2222	sub db_load() {
1035	warn "loading database $path\n";#d# remove later
1036	$DB = stat $path ? Storable::retrieve $path : { };	2223	$DB = stat $path ? Storable::retrieve $path : { };
1037	}	2224	}
1038		2225
1039	my $pid;	2226	my $pid;
1040		2227
1041	sub db_save() {	2228	sub db_save() {
1042	warn "saving database $path\n";#d# remove later
1043	waitpid $pid, 0 if $pid;	2229	waitpid $pid, 0 if $pid;
1044	if (0 == ($pid = fork)) {	2230	if (0 == ($pid = fork)) {
1045	$DB->{_meta}{version} = 1;	2231	$DB->{_meta}{version} = 1;
1046	Storable::nstore $DB, "$path~";	2232	Storable::nstore $DB, "$path~";
1047	rename "$path~", $path;	2233	rename "$path~", $path;
…		…
1054	sub db_sync() {	2240	sub db_sync() {
1055	db_save if $dirty;	2241	db_save if $dirty;
1056	undef $dirty;	2242	undef $dirty;
1057	}	2243	}
1058		2244
1059	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {	2245	my $idle = Event->idle (
1060	db_sync;	2246	reentrant => 0,
		2247	min => 10,
		2248	max => 20,
		2249	repeat => 0,
		2250	data => WF_AUTOCANCEL,
		2251	cb => \&db_sync,
1061	});	2252	);
1062		2253
1063	sub db_dirty() {	2254	sub db_dirty() {
1064	$dirty = 1;	2255	$dirty = 1;
1065	$idle->start;	2256	$idle->start;
1066	}	2257	}
…		…
1078	$DB->{$_[0]} = $_[1];	2269	$DB->{$_[0]} = $_[1];
1079	}	2270	}
1080	db_dirty;	2271	db_dirty;
1081	}	2272	}
1082		2273
1083	attach_global	2274	cf::global->attach (
1084	prio => 10000,	2275	prio => 10000,
1085	on_cleanup => sub {	2276	on_cleanup => sub {
1086	db_sync;	2277	db_sync;
1087	},	2278	},
1088	;	2279	);
1089	}	2280	}
1090		2281
1091	#############################################################################	2282	#############################################################################
1092	# the server's main()	2283	# the server's init and main functions
		2284
		2285	sub load_resources {
		2286	load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2287	or die "unable to load regions file\n";#d#
		2288	}
1093		2289
1094	sub cfg_load {	2290	sub cfg_load {
1095	open my $fh, "<:utf8", cf::confdir . "/config"	2291	open my $fh, "<:utf8", cf::confdir . "/config"
1096	or return;	2292	or return;
1097		2293
1098	local $/;	2294	local $/;
1099	*CFG = YAML::Syck::Load <$fh>;	2295	*CFG = YAML::Syck::Load <$fh>;
		2296
		2297	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2298
		2299	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2300	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2301
		2302	if (exists $CFG{mlockall}) {
		2303	eval {
		2304	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2305	and die "WARNING: m(un)lockall failed: $!\n";
		2306	};
		2307	warn $@ if $@;
		2308	}
		2309	}
		2310
		2311	sub init {
		2312	load_resources;
1100	}	2313	}
1101		2314
1102	sub main {	2315	sub main {
		2316	# we must not ever block the main coroutine
		2317	local $Coro::idle = sub {
		2318	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2319	(async {
		2320	Event::one_event;
		2321	})->prio (Coro::PRIO_MAX);
		2322	};
		2323
1103	cfg_load;	2324	cfg_load;
1104	db_load;	2325	db_load;
1105	load_extensions;	2326	load_extensions;
		2327
		2328	$TICK_WATCHER->start;
1106	Event::loop;	2329	Event::loop;
1107	}	2330	}
1108		2331
1109	#############################################################################	2332	#############################################################################
1110	# initialisation	2333	# initialisation and cleanup
1111		2334
		2335	# install some emergency cleanup handlers
		2336	BEGIN {
		2337	for my $signal (qw(INT HUP TERM)) {
		2338	Event->signal (
		2339	reentrant => 0,
		2340	data => WF_AUTOCANCEL,
		2341	signal => $signal,
		2342	prio => 0,
		2343	cb => sub {
		2344	cf::cleanup "SIG$signal";
		2345	},
		2346	);
		2347	}
		2348	}
		2349
		2350	sub emergency_save() {
		2351	my $freeze_guard = cf::freeze_mainloop;
		2352
		2353	warn "enter emergency perl save\n";
		2354
		2355	cf::sync_job {
		2356	# use a peculiar iteration method to avoid tripping on perl
		2357	# refcount bugs in for. also avoids problems with players
		2358	# and maps saved/destroyed asynchronously.
		2359	warn "begin emergency player save\n";
		2360	for my $login (keys %cf::PLAYER) {
		2361	my $pl = $cf::PLAYER{$login} or next;
		2362	$pl->valid or next;
		2363	$pl->save;
		2364	}
		2365	warn "end emergency player save\n";
		2366
		2367	warn "begin emergency map save\n";
		2368	for my $path (keys %cf::MAP) {
		2369	my $map = $cf::MAP{$path} or next;
		2370	$map->valid or next;
		2371	$map->save;
		2372	}
		2373	warn "end emergency map save\n";
		2374	};
		2375
		2376	warn "leave emergency perl save\n";
		2377	}
		2378
1112	sub _perl_reload(&) {	2379	sub reload() {
1113	my ($msg) = @_;	2380	# can/must only be called in main
		2381	if ($Coro::current != $Coro::main) {
		2382	warn "can only reload from main coroutine";
		2383	return;
		2384	}
1114		2385
1115	$msg->("reloading...");	2386	warn "reloading...";
		2387
		2388	warn "cancelling server ticker";
		2389	$TICK_WATCHER->cancel;
		2390
		2391	cf::emergency_save;
1116		2392
1117	eval {	2393	eval {
1118	# cancel all watchers	2394	# if anything goes wrong in here, we should simply crash as we already saved
		2395
		2396	warn "syncing database to disk";
		2397	cf::db_sync;
		2398
		2399	warn "cancelling all WF_AUTOCANCEL watchers";
1119	for (Event::all_watchers) {	2400	for (Event::all_watchers) {
1120	$_->cancel if $_->data & WF_AUTOCANCEL;	2401	$_->cancel if $_->data & WF_AUTOCANCEL;
1121	}	2402	}
1122		2403
1123	# unload all extensions	2404	warn "flushing outstanding aio requests";
1124	for (@exts) {	2405	for (;;) {
1125	$msg->("unloading <$_>");	2406	IO::AIO::flush;
1126	unload_extension $_;	2407	Coro::cede;
		2408	last unless IO::AIO::nreqs;
		2409	warn "iterate...";
		2410	}
		2411
		2412	warn "cancelling all extension coros";
		2413	$_->cancel for values %EXT_CORO;
		2414	%EXT_CORO = ();
		2415
		2416	warn "removing commands";
		2417	%COMMAND = ();
		2418
		2419	warn "removing ext commands";
		2420	%EXTCMD = ();
		2421
		2422	warn "unloading/nuking all extensions";
		2423	for my $pkg (@EXTS) {
		2424	warn "... unloading $pkg";
		2425
		2426	if (my $cb = $pkg->can ("unload")) {
		2427	eval {
		2428	$cb->($pkg);
		2429	1
		2430	} or warn "$pkg unloaded, but with errors: $@";
1127	}	2431	}
1128		2432
		2433	warn "... nuking $pkg";
		2434	Symbol::delete_package $pkg;
		2435	}
		2436
1129	# unload all modules loaded from $LIBDIR	2437	warn "unloading all perl modules loaded from $LIBDIR";
1130	while (my ($k, $v) = each %INC) {	2438	while (my ($k, $v) = each %INC) {
1131	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2439	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1132		2440
1133	$msg->("removing <$k>");	2441	warn "... unloading $k";
1134	delete $INC{$k};	2442	delete $INC{$k};
1135		2443
1136	$k =~ s/\.pm$//;	2444	$k =~ s/\.pm$//;
1137	$k =~ s/\//::/g;	2445	$k =~ s/\//::/g;
1138		2446
…		…
1141	}	2449	}
1142		2450
1143	Symbol::delete_package $k;	2451	Symbol::delete_package $k;
1144	}	2452	}
1145		2453
1146	# sync database to disk
1147	cf::db_sync;
1148
1149	# get rid of safe::, as good as possible	2454	warn "getting rid of safe::, as good as possible";
1150	Symbol::delete_package "safe::$_"	2455	Symbol::delete_package "safe::$_"
1151	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2456	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1152		2457
1153	# remove register_script_function callbacks
1154	# TODO
1155
1156	# unload cf.pm "a bit"	2458	warn "unloading cf.pm \"a bit\"";
1157	delete $INC{"cf.pm"};	2459	delete $INC{"cf.pm"};
1158		2460
1159	# don't, removes xs symbols, too,	2461	# don't, removes xs symbols, too,
1160	# and global variables created in xs	2462	# and global variables created in xs
1161	#Symbol::delete_package __PACKAGE__;	2463	#Symbol::delete_package __PACKAGE__;
1162		2464
1163	# reload cf.pm	2465	warn "unload completed, starting to reload now";
		2466
1164	$msg->("reloading cf.pm");	2467	warn "reloading cf.pm";
1165	require cf;	2468	require cf;
		2469	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1166		2470
1167	# load config and database again	2471	warn "loading config and database again";
1168	cf::cfg_load;	2472	cf::cfg_load;
1169	cf::db_load;	2473	cf::db_load;
1170		2474
1171	# load extensions	2475	warn "loading extensions";
1172	$msg->("load extensions");
1173	cf::load_extensions;	2476	cf::load_extensions;
1174		2477
1175	# reattach attachments to objects	2478	warn "reattaching attachments to objects/players";
1176	$msg->("reattach");
1177	_global_reattach;	2479	_global_reattach;
		2480	warn "reattaching attachments to maps";
		2481	reattach $_ for values %MAP;
		2482
		2483	warn "loading reloadable resources";
		2484	load_resources;
		2485
		2486	warn "restarting server ticker";
		2487
		2488	$TICK_WATCHER->start;
1178	};	2489	};
1179	$msg->($@) if $@;
1180		2490
1181	$msg->("reloaded");	2491	if ($@) {
		2492	warn $@;
		2493	warn "error while reloading, exiting.";
		2494	exit 1;
		2495	}
		2496
		2497	warn "reloaded";
1182	};	2498	};
1183		2499
1184	sub perl_reload() {	2500	our $RELOAD_WATCHER; # used only during reload
1185	_perl_reload {
1186	warn $_[0];
1187	print "$_[0]\n";
1188	};
1189	}
1190		2501
1191	register "<global>", __PACKAGE__;
1192
1193	register_command "perl-reload" => sub {	2502	register_command "reload" => sub {
1194	my ($who, $arg) = @_;	2503	my ($who, $arg) = @_;
1195		2504
1196	if ($who->flag (FLAG_WIZ)) {	2505	if ($who->flag (FLAG_WIZ)) {
1197	_perl_reload {	2506	$who->message ("reloading server.");
1198	warn $_[0];	2507
1199	$who->message ($_[0]);	2508	# doing reload synchronously and two reloads happen back-to-back,
		2509	# coro crashes during coro_state_free->destroy here.
		2510
		2511	$RELOAD_WATCHER ||= Event->timer (
		2512	reentrant => 0,
		2513	after => 0,
		2514	data => WF_AUTOCANCEL,
		2515	cb => sub {
		2516	reload;
		2517	undef $RELOAD_WATCHER;
		2518	},
1200	};	2519	);
1201	}	2520	}
1202	};	2521	};
1203		2522
1204	unshift @INC, $LIBDIR;	2523	unshift @INC, $LIBDIR;
1205		2524
		2525	my $bug_warning = 0;
		2526
1206	$TICK_WATCHER = Event->timer (	2527	$TICK_WATCHER = Event->timer (
		2528	reentrant => 0,
		2529	parked => 1,
1207	prio => 0,	2530	prio => 0,
1208	at => $NEXT_TICK || 1,	2531	at => $NEXT_TICK || $TICK,
1209	data => WF_AUTOCANCEL,	2532	data => WF_AUTOCANCEL,
1210	cb => sub {	2533	cb => sub {
		2534	if ($Coro::current != $Coro::main) {
		2535	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2536	unless ++$bug_warning > 10;
		2537	return;
		2538	}
		2539
		2540	$NOW = Event::time;
		2541
1211	cf::server_tick; # one server iteration	2542	cf::server_tick; # one server iteration
1212		2543	$RUNTIME += $TICK;
1213	my $NOW = Event::time;
1214	$NEXT_TICK += $TICK;	2544	$NEXT_TICK += $TICK;
1215		2545
		2546	$WAIT_FOR_TICK->broadcast;
		2547	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2548
		2549	Event::sweep;
		2550	Coro::cede_notself;
		2551
		2552	# my $AFTER = Event::time;
		2553	# warn $AFTER - $NOW;#d#
		2554
1216	# if we are delayed by four ticks or more, skip them all	2555	# if we are delayed by four ticks or more, skip them all
1217	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2556	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1218		2557
1219	$TICK_WATCHER->at ($NEXT_TICK);	2558	$TICK_WATCHER->at ($NEXT_TICK);
1220	$TICK_WATCHER->start;	2559	$TICK_WATCHER->start;
1221	},	2560	},
1222	);	2561	);
1223		2562
		2563	{
		2564	BDB::max_poll_time $TICK * 0.1;
		2565	$BDB_POLL_WATCHER = Event->io (
		2566	reentrant => 0,
		2567	fd => BDB::poll_fileno,
		2568	poll => 'r',
		2569	prio => 0,
		2570	data => WF_AUTOCANCEL,
		2571	cb => \&BDB::poll_cb,
		2572	);
		2573	BDB::min_parallel 8;
		2574
		2575	BDB::set_sync_prepare {
		2576	my $status;
		2577	my $current = $Coro::current;
		2578	(
		2579	sub {
		2580	$status = $!;
		2581	$current->ready; undef $current;
		2582	},
		2583	sub {
		2584	Coro::schedule while defined $current;
		2585	$! = $status;
		2586	},
		2587	)
		2588	};
		2589
		2590	unless ($DB_ENV) {
		2591	$DB_ENV = BDB::db_env_create;
		2592
		2593	cf::sync_job {
		2594	BDB::db_env_open
		2595	$DB_ENV,
		2596	$BDB_ENV_DIR,
		2597	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2598	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2599	0666;
		2600
		2601	cf::cleanup "$!" if $!;
		2602
		2603	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2604	};
		2605	}
		2606	}
		2607
		2608	{
		2609	IO::AIO::min_parallel 8;
		2610
		2611	undef $Coro::AIO::WATCHER;
1224	IO::AIO::max_poll_time $TICK * 0.2;	2612	IO::AIO::max_poll_time $TICK * 0.1;
1225		2613	$AIO_POLL_WATCHER = Event->io (
1226	Event->io (fd => IO::AIO::poll_fileno,	2614	reentrant => 0,
		2615	fd => IO::AIO::poll_fileno,
1227	poll => 'r',	2616	poll => 'r',
1228	prio => 5,	2617	prio => 6,
1229	data => WF_AUTOCANCEL,	2618	data => WF_AUTOCANCEL,
1230	cb => \&IO::AIO::poll_cb);	2619	cb => \&IO::AIO::poll_cb,
		2620	);
		2621	}
		2622
		2623	$WRITE_RUNTIME_WATCHER = Event->timer (
		2624	reentrant => 0,
		2625	data => WF_AUTOCANCEL,
		2626	after => 1,
		2627	interval => 10,
		2628	prio => 6, # keep it lowest so it acts like a watchdog
		2629	cb => Coro::unblock_sub {
		2630	write_runtime
		2631	or warn "ERROR: unable to write runtime file: $!";
		2632	},
		2633	);
		2634
		2635	END { cf::emergency_save }
1231		2636
1232	1	2637	1
1233		2638

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