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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.85 by root, Mon Dec 11 22:56:57 2006 UTC vs.
Revision 1.207 by root, Sun Feb 11 22:42:09 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		36
21	our %COMMAND = ();	37	our %COMMAND = ();
22	our %COMMAND_TIME = ();	38	our %COMMAND_TIME = ();
		39
		40	our @EXTS = (); # list of extension package names
23	our %EXTCMD = ();	41	our %EXTCMD = ();
24		42	our %EXT_CORO = (); # coroutines bound to extensions
25	_init_vars;	43	our %EXT_MAP = (); # pluggable maps
26		44
27	our @EVENT;	45	our @EVENT;
28	our $LIBDIR = maps_directory "perl";	46	our $LIBDIR = datadir . "/ext";
29		47
30	our $TICK = MAX_TIME * 1e-6;	48	our $TICK = MAX_TIME * 1e-6;
31	our $TICK_WATCHER;	49	our $TICK_WATCHER;
		50	our $AIO_POLL_WATCHER;
		51	our $WRITE_RUNTIME_WATCHER;
32	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;
33		58
34	our %CFG;	59	our %CFG;
35		60
36	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;
37		96
38	#############################################################################	97	#############################################################################
39		98
40	=head2 GLOBAL VARIABLES	99	=head2 GLOBAL VARIABLES
41		100
42	=over 4	101	=over 4
43		102
44	=item $cf::UPTIME	103	=item $cf::UPTIME
45		104
46	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.
47		111
48	=item $cf::LIBDIR	112	=item $cf::LIBDIR
49		113
50	The perl library directory, where extensions and cf-specific modules can	114	The perl library directory, where extensions and cf-specific modules can
51	be found. It will be added to C<@INC> automatically.	115	be found. It will be added to C<@INC> automatically.
52		116
		117	=item $cf::NOW
		118
		119	The time of the last (current) server tick.
		120
53	=item $cf::TICK	121	=item $cf::TICK
54		122
55	The interval between server ticks, in seconds.	123	The interval between server ticks, in seconds.
56		124
57	=item %cf::CFG	125	=item %cf::CFG
58		126
59	Configuration for the server, loaded from C</etc/crossfire/config>, or	127	Configuration for the server, loaded from C</etc/crossfire/config>, or
60	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.
61		136
62	=back	137	=back
63		138
64	=cut	139	=cut
65		140
66	BEGIN {	141	BEGIN {
67	*CORE::GLOBAL::warn = sub {	142	*CORE::GLOBAL::warn = sub {
68	my $msg = join "", @_;	143	my $msg = join "", @_;
		144	utf8::encode $msg;
		145
69	$msg .= "\n"	146	$msg .= "\n"
70	unless $msg =~ /\n$/;	147	unless $msg =~ /\n$/;
71		148
72	print STDERR "cfperl: $msg";
73	LOG llevError, "cfperl: $msg";	149	LOG llevError, $msg;
74	};	150	};
75	}	151	}
76		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';
77	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	158	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
78		159
79	# 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
80	# within the Safe compartment.	161	# 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)) {	162	for my $pkg (qw(
		163	cf::global cf::attachable
		164	cf::object cf::object::player
		165	cf::client cf::player
		166	cf::arch cf::living
		167	cf::map cf::party cf::region
		168	)) {
82	no strict 'refs';	169	no strict 'refs';
83	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	170	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
84	}	171	}
85		172
86	$Event::DIED = sub {	173	$Event::DIED = sub {
87	warn "error in event callback: @_";	174	warn "error in event callback: @_";
88	};	175	};
89		176
90	my %ext_pkg;
91	my @exts;
92	my @hook;
93
94	=head2 UTILITY FUNCTIONS	177	=head2 UTILITY FUNCTIONS
95		178
96	=over 4	179	=over 4
97		180
		181	=item dumpval $ref
		182
98	=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	}
99		203
100	use JSON::Syck (); # TODO# replace by JSON::PC once working	204	use JSON::Syck (); # TODO# replace by JSON::PC once working
101		205
102	=item $ref = cf::from_json $json	206	=item $ref = cf::from_json $json
103		207
…		…
119	sub to_json($) {	223	sub to_json($) {
120	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	224	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
121	JSON::Syck::Dump $_[0]	225	JSON::Syck::Dump $_[0]
122	}	226	}
123		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
124	=back	383	=back
125		384
126	=cut	385	=cut
127		386
128	#############################################################################	387	#############################################################################
129		388
130	=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+).
131		398
132	=over 4	399	=over 4
133		400
134	=item $object->attach ($attachment, key => $value...)
135
136	=item $object->detach ($attachment)
137
138	Attach/detach a pre-registered attachment to an object.
139
140	=item $player->attach ($attachment, key => $value...)
141
142	=item $player->detach ($attachment)
143
144	Attach/detach a pre-registered attachment to a player.
145
146	=item $map->attach ($attachment, key => $value...)	401	=item $attachable->attach ($attachment, key => $value...)
147		402
148	=item $map->detach ($attachment)	403	=item $attachable->detach ($attachment)
149		404
150	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.
151		407
152	=item $bool = $object->attached ($name)	408	Example, attach a minesweeper attachment to the given object, making it a
		409	10x10 minesweeper game:
153		410
154	=item $bool = $player->attached ($name)	411	$obj->attach (minesweeper => width => 10, height => 10);
155		412
156	=item $bool = $map->attached ($name)	413	=item $bool = $attachable->attached ($name)
157		414
158	Checks wether the named attachment is currently attached to the object.	415	Checks wether the named attachment is currently attached to the object.
159		416
160	=item cf::attach_global ...	417	=item cf::CLASS->attach ...
161		418
162	Attach handlers for global events.	419	=item cf::CLASS->detach ...
163		420
164	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
165	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:
166		455
167	=over 4	456	=over 4
168		457
169	=item prio => $number	458	=item prio => $number
170		459
…		…
172	by another C<prio> setting). Lower priority handlers get executed	461	by another C<prio> setting). Lower priority handlers get executed
173	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
174	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
175	unless you know what you are doing.	464	unless you know what you are doing.
176		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
177	=item on_I<event> => \&cb	472	=item on_I<event> => \&cb
178		473
179	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
180	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
181	handlers are recognised generally depends on the type of object these	476	handlers are recognised generally depends on the type of object these
…		…
190	package and register them. Only handlers for eevents supported by the	485	package and register them. Only handlers for eevents supported by the
191	object/class are recognised.	486	object/class are recognised.
192		487
193	=back	488	=back
194		489
195	=item cf::attach_to_type $object_type, $subtype, ...	490	Example, define an attachment called "sockpuppet" that calls the given
		491	event handler when a monster attacks:
196		492
197	Attach handlers for a specific object type (e.g. TRANSPORT) and	493	cf::object::attachment sockpuppet =>
198	subtype. If C<$subtype> is zero or undef, matches all objects of the given	494	on_skill_attack => sub {
199	type.	495	my ($self, $victim) = @_;
200		496	...
201	=item cf::attach_to_objects ...
202
203	Attach handlers to all objects. Do not use this except for debugging or
204	very rare events, as handlers are (obviously) called for I<all> objects in
205	the game.
206
207	=item cf::attach_to_players ...
208
209	Attach handlers to all players.
210
211	=item cf::attach_to_maps ...
212
213	Attach handlers to all maps.
214
215	=item cf:register_attachment $name, ...
216
217	Register an attachment by name through which objects can refer to this
218	attachment.
219
220	=item cf:register_player_attachment $name, ...
221
222	Register an attachment by name through which players can refer to this
223	attachment.
224
225	=item cf:register_map_attachment $name, ...
226
227	Register an attachment by name through which maps can refer to this
228	attachment.
229
230	=cut
231
232	# the following variables are defined in .xs and must not be re-created
233	our @CB_GLOBAL = (); # registry for all global events
234	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
235	our @CB_PLAYER = ();
236	our @CB_TYPE = (); # registry for type (cf-object class) based events
237	our @CB_MAP = ();
238
239	my %attachment;
240
241	sub _attach_cb($\%$$$) {
242	my ($registry, $undo, $event, $prio, $cb) = @_;
243
244	use sort 'stable';
245
246	$cb = [$prio, $cb];
247
248	@{$registry->[$event]} = sort
249	{ $a->[0] cmp $b->[0] }
250	@{$registry->[$event] || []}, $cb;
251
252	push @{$undo->{cb}}, [$event, $cb];
253	}
254
255	# attach handles attaching event callbacks
256	# the only thing the caller has to do is pass the correct
257	# registry (== where the callback attaches to).
258	sub _attach(\@$@) {
259	my ($registry, $klass, @arg) = @_;
260
261	my $prio = 0;
262
263	my %undo = (
264	registry => $registry,
265	cb => [],
266	);
267
268	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
269
270	while (@arg) {
271	my $type = shift @arg;
272
273	if ($type eq "prio") {
274	$prio = shift @arg;
275
276	} elsif ($type eq "package") {
277	my $pkg = shift @arg;
278
279	while (my ($name, $id) = each %cb_id) {
280	if (my $cb = $pkg->can ($name)) {
281	_attach_cb $registry, %undo, $id, $prio, $cb;
282	}
283	}	497	}
284
285	} elsif (exists $cb_id{$type}) {
286	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;
287
288	} elsif (ref $type) {
289	warn "attaching objects not supported, ignoring.\n";
290
291	} else {
292	shift @arg;
293	warn "attach argument '$type' not supported, ignoring.\n";
294	}
295	}
296
297	\%undo
298	}
299
300	sub _attach_attachment {
301	my ($obj, $name, %arg) = @_;
302
303	return if exists $obj->{_attachment}{$name};
304
305	my $res;
306
307	if (my $attach = $attachment{$name}) {
308	my $registry = $obj->registry;
309
310	for (@$attach) {
311	my ($klass, @attach) = @$_;
312	$res = _attach @$registry, $klass, @attach;
313	}
314
315	$obj->{$name} = \%arg;
316	} else {
317	warn "object uses attachment '$name' that is not available, postponing.\n";
318	}
319
320	$obj->{_attachment}{$name} = undef;
321
322	$res->{attachment} = $name;
323	$res
324	}
325
326	*cf::object::attach =
327	*cf::player::attach =
328	*cf::map::attach = sub {
329	my ($obj, $name, %arg) = @_;
330
331	_attach_attachment $obj, $name, %arg;
332	};
333
334	# all those should be optimised
335	*cf::object::detach =
336	*cf::player::detach =
337	*cf::map::detach = sub {
338	my ($obj, $name) = @_;
339
340	delete $obj->{_attachment}{$name};
341	reattach ($obj);
342	};
343
344	*cf::object::attached =
345	*cf::player::attached =
346	*cf::map::attached = sub {
347	my ($obj, $name) = @_;
348
349	exists $obj->{_attachment}{$name}
350	};
351
352	sub attach_global {
353	_attach @CB_GLOBAL, KLASS_GLOBAL, @_
354	}
355
356	sub attach_to_type {
357	my $type = shift;
358	my $subtype = shift;
359
360	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
361	}
362
363	sub attach_to_objects {
364	_attach @CB_OBJECT, KLASS_OBJECT, @_
365	}
366
367	sub attach_to_players {
368	_attach @CB_PLAYER, KLASS_PLAYER, @_
369	}
370
371	sub attach_to_maps {
372	_attach @CB_MAP, KLASS_MAP, @_
373	}
374
375	sub register_attachment {
376	my $name = shift;
377
378	$attachment{$name} = [[KLASS_OBJECT, @_]];
379	}
380
381	sub register_player_attachment {
382	my $name = shift;
383
384	$attachment{$name} = [[KLASS_PLAYER, @_]];
385	}
386
387	sub register_map_attachment {
388	my $name = shift;
389
390	$attachment{$name} = [[KLASS_MAP, @_]];
391	}
392
393	our $override;
394	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
395
396	sub override {
397	$override = 1;
398	@invoke_results = ();
399	}
400
401	sub do_invoke {
402	my $event = shift;
403	my $callbacks = shift;
404
405	@invoke_results = ();
406
407	local $override;
408
409	for (@$callbacks) {
410	eval { &{$_->[1]} };
411
412	if ($@) {
413	warn "$@";
414	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
415	override;
416	}
417
418	return 1 if $override;
419	}
420
421	0	498	}
422	}
423		499
424	=item $bool = cf::invoke EVENT_GLOBAL_XXX, ...	500	=item $attachable->valid
425
426	=item $bool = $object->invoke (EVENT_OBJECT_XXX, ...)
427
428	=item $bool = $player->invoke (EVENT_PLAYER_XXX, ...)
429
430	=item $bool = $map->invoke (EVENT_MAP_XXX, ...)
431
432	Generate a global/object/player/map-specific event with the given arguments.
433
434	This API is preliminary (most likely, the EVENT_KLASS_xxx prefix will be
435	removed in future versions), and there is no public API to access override
436	results (if you must, access C<@cf::invoke_results> directly).
437
438	=back
439
440	=cut
441
442	#############################################################################
443
444	=head2 METHODS VALID FOR ALL CORE OBJECTS
445
446	=over 4
447
448	=item $object->valid, $player->valid, $map->valid
449		501
450	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
451	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
452	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
453	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
454	exception.	506	exception.
455		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
456	=back	697	=back
457		698
458	=cut	699	=cut
459
460	*cf::object::valid =
461	*cf::player::valid =
462	*cf::map::valid = \&cf::_valid;
463		700
464	#############################################################################	701	#############################################################################
465	# object support	702	# object support
466		703
467	sub instantiate {
468	my ($obj, $data) = @_;
469
470	$data = from_json $data;
471
472	for (@$data) {
473	my ($name, $args) = @$_;
474
475	$obj->attach ($name, %{$args || {} });
476	}
477	}
478
479	# basically do the same as instantiate, without calling instantiate
480	sub reattach {	704	sub reattach {
		705	# basically do the same as instantiate, without calling instantiate
481	my ($obj) = @_;	706	my ($obj) = @_;
		707
		708	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		709
482	my $registry = $obj->registry;	710	my $registry = $obj->registry;
483		711
484	@$registry = ();	712	@$registry = ();
485		713
486	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	714	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
487		715
488	for my $name (keys %{ $obj->{_attachment} || {} }) {	716	for my $name (keys %{ $obj->{_attachment} || {} }) {
489	if (my $attach = $attachment{$name}) {	717	if (my $attach = $attachment{$name}) {
490	for (@$attach) {	718	for (@$attach) {
491	my ($klass, @attach) = @$_;	719	my ($klass, @attach) = @$_;
492	_attach @$registry, $klass, @attach;	720	_attach $registry, $klass, @attach;
493	}	721	}
494	} else {	722	} else {
495	warn "object uses attachment '$name' that is not available, postponing.\n";	723	warn "object uses attachment '$name' that is not available, postponing.\n";
496	}	724	}
497	}	725	}
498	}	726	}
499		727
500	sub object_freezer_save {	728	cf::attachable->attach (
501	my ($filename, $rdata, $objs) = @_;
502
503	if (length $$rdata) {
504	warn sprintf "saving %s (%d,%d)\n",
505	$filename, length $$rdata, scalar @$objs;
506
507	if (open my $fh, ">:raw", "$filename~") {
508	chmod SAVE_MODE, $fh;
509	syswrite $fh, $$rdata;
510	close $fh;
511
512	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
513	chmod SAVE_MODE, $fh;
514	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
515	close $fh;
516	rename "$filename.pst~", "$filename.pst";
517	} else {
518	unlink "$filename.pst";
519	}
520
521	rename "$filename~", $filename;
522	} else {
523	warn "FATAL: $filename~: $!\n";
524	}
525	} else {
526	unlink $filename;
527	unlink "$filename.pst";
528	}
529	}
530
531	sub object_freezer_as_string {
532	my ($rdata, $objs) = @_;
533
534	use Data::Dumper;
535
536	$$rdata . Dumper $objs
537	}
538
539	sub object_thawer_load {
540	my ($filename) = @_;
541
542	local $/;
543
544	my $av;
545
546	#TODO: use sysread etc.
547	if (open my $data, "<:raw:perlio", $filename) {
548	$data = <$data>;
549	if (open my $pst, "<:raw:perlio", "$filename.pst") {
550	$av = eval { (Storable::thaw <$pst>)->{objs} };
551	}
552	return ($data, $av);
553	}
554
555	()
556	}
557
558	attach_to_objects
559	prio => -1000000,	729	prio => -1000000,
		730	on_instantiate => sub {
		731	my ($obj, $data) = @_;
		732
		733	$data = from_json $data;
		734
		735	for (@$data) {
		736	my ($name, $args) = @$_;
		737
		738	$obj->attach ($name, %{$args || {} });
		739	}
		740	},
		741	on_reattach => \&reattach,
560	on_clone => sub {	742	on_clone => sub {
561	my ($src, $dst) = @_;	743	my ($src, $dst) = @_;
562		744
563	@{$dst->registry} = @{$src->registry};	745	@{$dst->registry} = @{$src->registry};
564		746
565	%$dst = %$src;	747	%$dst = %$src;
566		748
567	%{$dst->{_attachment}} = %{$src->{_attachment}}	749	%{$dst->{_attachment}} = %{$src->{_attachment}}
568	if exists $src->{_attachment};	750	if exists $src->{_attachment};
569	},	751	},
570	;	752	);
		753
		754	sub object_freezer_save {
		755	my ($filename, $rdata, $objs) = @_;
		756
		757	sync_job {
		758	if (length $$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	}
571		827
572	#############################################################################	828	#############################################################################
573	# command handling &c	829	# command handling &c
574		830
575	=item cf::register_command $name => \&callback($ob,$args);	831	=item cf::register_command $name => \&callback($ob,$args);
…		…
598	=cut	854	=cut
599		855
600	sub register_extcmd {	856	sub register_extcmd {
601	my ($name, $cb) = @_;	857	my ($name, $cb) = @_;
602		858
603	my $caller = caller;
604	#warn "registering extcmd '$name' to '$caller'";
605
606	$EXTCMD{$name} = [$cb, $caller];	859	$EXTCMD{$name} = $cb;
607	}	860	}
608		861
609	attach_to_players	862	cf::player->attach (
610	on_command => sub {	863	on_command => sub {
611	my ($pl, $name, $params) = @_;	864	my ($pl, $name, $params) = @_;
612		865
613	my $cb = $COMMAND{$name}	866	my $cb = $COMMAND{$name}
614	or return;	867	or return;
…		…
624		877
625	my $msg = eval { from_json $buf };	878	my $msg = eval { from_json $buf };
626		879
627	if (ref $msg) {	880	if (ref $msg) {
628	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	881	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
629	if (my %reply = $cb->[0]->($pl, $msg)) {	882	if (my %reply = $cb->($pl, $msg)) {
630	$pl->ext_reply ($msg->{msgid}, %reply);	883	$pl->ext_reply ($msg->{msgid}, %reply);
631	}	884	}
632	}	885	}
633	} else {	886	} else {
634	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	887	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
635	}	888	}
636		889
637	cf::override;	890	cf::override;
638	},	891	},
639	;	892	);
640
641	sub register {
642	my ($base, $pkg) = @_;
643
644	#TODO
645	}
646		893
647	sub load_extension {	894	sub load_extension {
648	my ($path) = @_;	895	my ($path) = @_;
649		896
650	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	897	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
651	my $base = $1;	898	my $base = $1;
652	my $pkg = $1;	899	my $pkg = $1;
653	$pkg =~ s/[^[:word:]]/_/g;	900	$pkg =~ s/[^[:word:]]/_/g;
654	$pkg = "ext::$pkg";	901	$pkg = "ext::$pkg";
655		902
656	warn "loading '$path' into '$pkg'\n";	903	warn "... loading '$path' into '$pkg'\n";
657		904
658	open my $fh, "<:utf8", $path	905	open my $fh, "<:utf8", $path
659	or die "$path: $!";	906	or die "$path: $!";
660		907
661	my $source =	908	my $source =
662	"package $pkg; use strict; use utf8;\n"	909	"package $pkg; use strict; use utf8;\n"
663	. "#line 1 \"$path\"\n{\n"	910	. "#line 1 \"$path\"\n{\n"
664	. (do { local $/; <$fh> })	911	. (do { local $/; <$fh> })
665	. "\n};\n1";	912	. "\n};\n1";
666		913
667	eval $source	914	unless (eval $source) {
668	or die $@ ? "$path: $@\n"	915	my $msg = $@ ? "$path: $@\n"
669	: "extension disabled.\n";	916	: "extension disabled.\n";
670		917	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
671	push @exts, $pkg;	918	warn $@;
672	$ext_pkg{$base} = $pkg;	919	warn "mandatory extension failed to load, exiting.\n";
673		920	exit 1;
674	# no strict 'refs';	921	}
675	# @{"$pkg\::ISA"} = ext::;	922	die $@;
676
677	register $base, $pkg;
678	}
679
680	sub unload_extension {
681	my ($pkg) = @_;
682
683	warn "removing extension $pkg\n";
684
685	# remove hooks
686	#TODO
687	# for my $idx (0 .. $#PLUGIN_EVENT) {
688	# delete $hook[$idx]{$pkg};
689	# }	923	}
690		924
691	# remove commands	925	push @EXTS, $pkg;
692	for my $name (keys %COMMAND) {
693	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
694
695	if (@cb) {
696	$COMMAND{$name} = \@cb;
697	} else {
698	delete $COMMAND{$name};
699	}
700	}
701
702	# remove extcmds
703	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
704	delete $EXTCMD{$name};
705	}
706
707	if (my $cb = $pkg->can ("unload")) {
708	eval {
709	$cb->($pkg);
710	1
711	} or warn "$pkg unloaded, but with errors: $@";
712	}
713
714	Symbol::delete_package $pkg;
715	}	926	}
716		927
717	sub load_extensions {	928	sub load_extensions {
718	my $LIBDIR = maps_directory "perl";
719
720	for my $ext (<$LIBDIR/*.ext>) {	929	for my $ext (<$LIBDIR/*.ext>) {
721	next unless -r $ext;	930	next unless -r $ext;
722	eval {	931	eval {
723	load_extension $ext;	932	load_extension $ext;
724	1	933	1
725	} or warn "$ext not loaded: $@";	934	} or warn "$ext not loaded: $@";
726	}	935	}
727	}	936	}
728		937
729	#############################################################################	938	#############################################################################
730	# load/save/clean perl data associated with a map
731		939
732	*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 {
733	my ($map) = @_;	1472	my ($map) = @_;
734		1473
735	my $path = $map->tmpname;	1474	my @diag; # diagonal neighbours
736	defined $path or return;
737		1475
738	unlink "$path.pst";	1476	for (0 .. 3) {
739	};	1477	my $neigh = $map->tile_path ($_)
		1478	or next;
		1479	$neigh = find $neigh, $map
		1480	or next;
		1481	$neigh->load;
740		1482
741	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	}
742		1486
743	#############################################################################	1487	for (@diag) {
744	# load/save perl data associated with player->ob objects	1488	my $neigh = find @$_
745		1489	or next;
746	sub all_objects(@) {	1490	$neigh->load;
747	@_, map all_objects ($_->inv), @_	1491	}
748	}	1492	}
749		1493
750	# TODO: compatibility cruft, remove when no longer needed	1494	sub find_sync {
751	attach_to_players	1495	my ($path, $origin) = @_;
752	on_load => sub {
753	my ($pl, $path) = @_;
754		1496
755	for my $o (all_objects $pl->ob) {	1497	cf::sync_job { find $path, $origin }
756	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1498	}
757	$o->set_ob_key_value ("_perl_data");
758		1499
759	%$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};
760	}	1527	}
761	}	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);
762	},	1563	}
763	;	1564	}
764		1565
765	#############################################################################	1566	sub swap_out {
		1567	my ($self) = @_;
766		1568
767	=head2 CORE EXTENSIONS	1569	# save first because save cedes
		1570	$self->save;
768		1571
769	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;
770		1675
771	=over 4	1676	=over 4
772		1677
773	=item cf::player::exists $login	1678	=item $ob->inv_recursive
774		1679
775	Returns true when the given account exists.	1680	Returns the inventory of the object _and_ their inventories, recursively.
776		1681
777	=cut	1682	=cut
778		1683
779	sub cf::player::exists($) {	1684	sub inv_recursive_;
780	cf::player::find $_[0]	1685	sub inv_recursive_ {
781	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1686	map { $_, inv_recursive_ $_->inv } @_
782	}	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
783		1700
784	=item $player_object->reply ($npc, $msg[, $flags])	1701	=item $player_object->reply ($npc, $msg[, $flags])
785		1702
786	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>
787	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
…		…
789		1706
790	=cut	1707	=cut
791		1708
792	# rough implementation of a future "reply" method that works	1709	# rough implementation of a future "reply" method that works
793	# with dialog boxes.	1710	# with dialog boxes.
		1711	#TODO: the first argument must go, split into a $npc->reply_to ( method
794	sub cf::object::player::reply($$$;$) {	1712	sub cf::object::player::reply($$$;$) {
795	my ($self, $npc, $msg, $flags) = @_;	1713	my ($self, $npc, $msg, $flags) = @_;
796		1714
797	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1715	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
798		1716
…		…
802	$msg = $npc->name . " says: $msg" if $npc;	1720	$msg = $npc->name . " says: $msg" if $npc;
803	$self->message ($msg, $flags);	1721	$self->message ($msg, $flags);
804	}	1722	}
805	}	1723	}
806		1724
807	=item $player->ext_reply ($msgid, $msgtype, %msg)
808
809	Sends an ext reply to the player.
810
811	=cut
812
813	sub cf::player::ext_reply($$$%) {
814	my ($self, $id, %msg) = @_;
815
816	$msg{msgid} = $id;
817
818	$self->send ("ext " . to_json \%msg);
819	}
820
821	=item $player_object->may ("access")	1725	=item $player_object->may ("access")
822		1726
823	Returns wether the given player is authorized to access resource "access"	1727	Returns wether the given player is authorized to access resource "access"
824	(e.g. "command_wizcast").	1728	(e.g. "command_wizcast").
825		1729
…		…
832	(ref $cf::CFG{"may_$access"}	1736	(ref $cf::CFG{"may_$access"}
833	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1737	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
834	: $cf::CFG{"may_$access"})	1738	: $cf::CFG{"may_$access"})
835	}	1739	}
836		1740
837	=cut	1741	=item $player_object->enter_link
838		1742
839	#############################################################################	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 $ns->{_coro}) || {} };
		2057	},
		2058	);
		2059
		2060	=back
		2061
840		2062
841	=head2 SAFE SCRIPTING	2063	=head2 SAFE SCRIPTING
842		2064
843	Functions that provide a safe environment to compile and execute	2065	Functions that provide a safe environment to compile and execute
844	snippets of perl code without them endangering the safety of the server	2066	snippets of perl code without them endangering the safety of the server
…		…
859		2081
860	=pod	2082	=pod
861		2083
862	The following fucntions and emthods are available within a safe environment:	2084	The following fucntions and emthods are available within a safe environment:
863		2085
864	cf::object contr pay_amount pay_player	2086	cf::object contr pay_amount pay_player map
865	cf::object::player player	2087	cf::object::player player
866	cf::player peaceful	2088	cf::player peaceful
		2089	cf::map trigger
867		2090
868	=cut	2091	=cut
869		2092
870	for (	2093	for (
871	["cf::object" => qw(contr pay_amount pay_player)],	2094	["cf::object" => qw(contr pay_amount pay_player map)],
872	["cf::object::player" => qw(player)],	2095	["cf::object::player" => qw(player)],
873	["cf::player" => qw(peaceful)],	2096	["cf::player" => qw(peaceful)],
		2097	["cf::map" => qw(trigger)],
874	) {	2098	) {
875	no strict 'refs';	2099	no strict 'refs';
876	my ($pkg, @funs) = @$_;	2100	my ($pkg, @funs) = @$_;
877	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2101	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
878	for @funs;	2102	for @funs;
…		…
994		2218
995	{	2219	{
996	my $path = cf::localdir . "/database.pst";	2220	my $path = cf::localdir . "/database.pst";
997		2221
998	sub db_load() {	2222	sub db_load() {
999	warn "loading database $path\n";#d# remove later
1000	$DB = stat $path ? Storable::retrieve $path : { };	2223	$DB = stat $path ? Storable::retrieve $path : { };
1001	}	2224	}
1002		2225
1003	my $pid;	2226	my $pid;
1004		2227
1005	sub db_save() {	2228	sub db_save() {
1006	warn "saving database $path\n";#d# remove later
1007	waitpid $pid, 0 if $pid;	2229	waitpid $pid, 0 if $pid;
1008	if (0 == ($pid = fork)) {	2230	if (0 == ($pid = fork)) {
1009	$DB->{_meta}{version} = 1;	2231	$DB->{_meta}{version} = 1;
1010	Storable::nstore $DB, "$path~";	2232	Storable::nstore $DB, "$path~";
1011	rename "$path~", $path;	2233	rename "$path~", $path;
…		…
1018	sub db_sync() {	2240	sub db_sync() {
1019	db_save if $dirty;	2241	db_save if $dirty;
1020	undef $dirty;	2242	undef $dirty;
1021	}	2243	}
1022		2244
1023	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, cb => sub {	2245	my $idle = Event->idle (
1024	db_sync;	2246	reentrant => 0,
		2247	min => 10,
		2248	max => 20,
		2249	repeat => 0,
		2250	data => WF_AUTOCANCEL,
		2251	cb => \&db_sync,
1025	});	2252	);
1026		2253
1027	sub db_dirty() {	2254	sub db_dirty() {
1028	$dirty = 1;	2255	$dirty = 1;
1029	$idle->start;	2256	$idle->start;
1030	}	2257	}
…		…
1042	$DB->{$_[0]} = $_[1];	2269	$DB->{$_[0]} = $_[1];
1043	}	2270	}
1044	db_dirty;	2271	db_dirty;
1045	}	2272	}
1046		2273
1047	attach_global	2274	cf::global->attach (
1048	prio => 10000,	2275	prio => 10000,
1049	on_cleanup => sub {	2276	on_cleanup => sub {
1050	db_sync;	2277	db_sync;
1051	},	2278	},
1052	;	2279	);
1053	}	2280	}
1054		2281
1055	#############################################################################	2282	#############################################################################
1056	# 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	}
1057		2289
1058	sub cfg_load {	2290	sub cfg_load {
1059	open my $fh, "<:utf8", cf::confdir . "/config"	2291	open my $fh, "<:utf8", cf::confdir . "/config"
1060	or return;	2292	or return;
1061		2293
1062	local $/;	2294	local $/;
1063	*CFG = YAML::Syck::Load <$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;
1064	}	2313	}
1065		2314
1066	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
1067	cfg_load;	2324	cfg_load;
1068	db_load;	2325	db_load;
1069	load_extensions;	2326	load_extensions;
		2327
		2328	$TICK_WATCHER->start;
1070	Event::loop;	2329	Event::loop;
1071	}	2330	}
1072		2331
1073	#############################################################################	2332	#############################################################################
1074	# initialisation	2333	# initialisation and cleanup
1075		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	$map->save;
		2372	}
		2373	warn "end emergency map save\n";
		2374	};
		2375
		2376	warn "leave emergency perl save\n";
		2377	}
		2378
1076	sub _perl_reload(&) {	2379	sub reload() {
1077	my ($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	}
1078		2385
1079	$msg->("reloading...");	2386	warn "reloading...";
		2387
		2388	warn "cancelling server ticker";
		2389	$TICK_WATCHER->cancel;
		2390
		2391	cf::emergency_save;
1080		2392
1081	eval {	2393	eval {
1082	# 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";
1083	$_->cancel for Event::all_watchers;	2400	for (Event::all_watchers) {
		2401	$_->cancel if $_->data & WF_AUTOCANCEL;
		2402	}
1084		2403
1085	# unload all extensions	2404	warn "flushing outstanding aio requests";
1086	for (@exts) {	2405	for (;;) {
1087	$msg->("unloading <$_>");	2406	IO::AIO::flush;
1088	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: $@";
1089	}	2431	}
1090		2432
		2433	warn "... nuking $pkg";
		2434	Symbol::delete_package $pkg;
		2435	}
		2436
1091	# unload all modules loaded from $LIBDIR	2437	warn "unloading all perl modules loaded from $LIBDIR";
1092	while (my ($k, $v) = each %INC) {	2438	while (my ($k, $v) = each %INC) {
1093	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2439	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1094		2440
1095	$msg->("removing <$k>");	2441	warn "... unloading $k";
1096	delete $INC{$k};	2442	delete $INC{$k};
1097		2443
1098	$k =~ s/\.pm$//;	2444	$k =~ s/\.pm$//;
1099	$k =~ s/\//::/g;	2445	$k =~ s/\//::/g;
1100		2446
…		…
1103	}	2449	}
1104		2450
1105	Symbol::delete_package $k;	2451	Symbol::delete_package $k;
1106	}	2452	}
1107		2453
1108	# sync database to disk
1109	cf::db_sync;
1110
1111	# get rid of safe::, as good as possible	2454	warn "getting rid of safe::, as good as possible";
1112	Symbol::delete_package "safe::$_"	2455	Symbol::delete_package "safe::$_"
1113	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);
1114		2457
1115	# remove register_script_function callbacks
1116	# TODO
1117
1118	# unload cf.pm "a bit"	2458	warn "unloading cf.pm \"a bit\"";
1119	delete $INC{"cf.pm"};	2459	delete $INC{"cf.pm"};
1120		2460
1121	# don't, removes xs symbols, too,	2461	# don't, removes xs symbols, too,
1122	# and global variables created in xs	2462	# and global variables created in xs
1123	#Symbol::delete_package __PACKAGE__;	2463	#Symbol::delete_package __PACKAGE__;
1124		2464
1125	# reload cf.pm	2465	warn "unload completed, starting to reload now";
		2466
1126	$msg->("reloading cf.pm");	2467	warn "reloading cf.pm";
1127	require cf;	2468	require cf;
		2469	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1128		2470
1129	# load config and database again	2471	warn "loading config and database again";
1130	cf::cfg_load;	2472	cf::cfg_load;
1131	cf::db_load;	2473	cf::db_load;
1132		2474
1133	# load extensions	2475	warn "loading extensions";
1134	$msg->("load extensions");
1135	cf::load_extensions;	2476	cf::load_extensions;
1136		2477
1137	# reattach attachments to objects	2478	warn "reattaching attachments to objects/players";
1138	$msg->("reattach");
1139	_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;
1140	};	2489	};
1141	$msg->($@) if $@;
1142		2490
1143	$msg->("reloaded");	2491	if ($@) {
		2492	warn $@;
		2493	warn "error while reloading, exiting.";
		2494	exit 1;
		2495	}
		2496
		2497	warn "reloaded";
1144	};	2498	};
1145		2499
1146	sub perl_reload() {	2500	our $RELOAD_WATCHER; # used only during reload
1147	_perl_reload {
1148	warn $_[0];
1149	print "$_[0]\n";
1150	};
1151	}
1152		2501
1153	register "<global>", __PACKAGE__;
1154
1155	register_command "perl-reload" => sub {	2502	register_command "reload" => sub {
1156	my ($who, $arg) = @_;	2503	my ($who, $arg) = @_;
1157		2504
1158	if ($who->flag (FLAG_WIZ)) {	2505	if ($who->flag (FLAG_WIZ)) {
1159	_perl_reload {	2506	$who->message ("reloading server.");
1160	warn $_[0];	2507
1161	$who->message ($_[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	},
1162	};	2519	);
1163	}	2520	}
1164	};	2521	};
1165		2522
1166	unshift @INC, $LIBDIR;	2523	unshift @INC, $LIBDIR;
1167		2524
		2525	my $bug_warning = 0;
		2526
1168	$TICK_WATCHER = Event->timer (	2527	$TICK_WATCHER = Event->timer (
		2528	reentrant => 0,
		2529	parked => 1,
1169	prio => 1,	2530	prio => 0,
1170	async => 1,
1171	at => $NEXT_TICK || 1,	2531	at => $NEXT_TICK || $TICK,
		2532	data => WF_AUTOCANCEL,
1172	cb => sub {	2533	cb => sub {
		2534	if ($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
1173	cf::server_tick; # one server iteration	2542	cf::server_tick; # one server iteration
1174		2543	$RUNTIME += $TICK;
1175	my $NOW = Event::time;
1176	$NEXT_TICK += $TICK;	2544	$NEXT_TICK += $TICK;
1177		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
1178	# 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
1179	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2556	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
1180		2557
1181	$TICK_WATCHER->at ($NEXT_TICK);	2558	$TICK_WATCHER->at ($NEXT_TICK);
1182	$TICK_WATCHER->start;	2559	$TICK_WATCHER->start;
1183	},	2560	},
1184	);	2561	);
1185		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	$DB_ENV->set_lk_detect;
		2605	};
		2606	}
		2607	}
		2608
		2609	{
		2610	IO::AIO::min_parallel 8;
		2611
		2612	undef $Coro::AIO::WATCHER;
1186	IO::AIO::max_poll_time $TICK * 0.2;	2613	IO::AIO::max_poll_time $TICK * 0.1;
1187		2614	$AIO_POLL_WATCHER = Event->io (
1188	Event->io (fd => IO::AIO::poll_fileno,	2615	reentrant => 0,
		2616	fd => IO::AIO::poll_fileno,
1189	poll => 'r',	2617	poll => 'r',
1190	prio => 5,	2618	prio => 6,
		2619	data => WF_AUTOCANCEL,
1191	cb => \&IO::AIO::poll_cb);	2620	cb => \&IO::AIO::poll_cb,
		2621	);
		2622	}
		2623
		2624	$WRITE_RUNTIME_WATCHER = Event->timer (
		2625	reentrant => 0,
		2626	data => WF_AUTOCANCEL,
		2627	after => 1,
		2628	interval => 10,
		2629	prio => 6, # keep it lowest so it acts like a watchdog
		2630	cb => Coro::unblock_sub {
		2631	write_runtime
		2632	or warn "ERROR: unable to write runtime file: $!";
		2633	},
		2634	);
		2635
		2636	END { cf::emergency_save }
1192		2637
1193	1	2638	1
1194		2639

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