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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.54 by root, Tue Aug 29 14:49:28 2006 UTC vs.
Revision 1.186 by root, Sat Jan 20 01:12:39 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.4 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use Data::Dumper;
		21	use Digest::MD5;
		22	use Fcntl;
		23	use IO::AIO 2.32 ();
		24	use YAML::Syck ();
10	use Time::HiRes;	25	use Time::HiRes;
11	use Event;	26
12	$Event::Eval = 1; # no idea why this is required, but it is	27	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		28
14	use strict;	29	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		30
16	_reload_1;	31	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		32	$YAML::Syck::ImplicitUnicode = 1;
17		33
		34	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		35
18	our %COMMAND = ();	36	our %COMMAND = ();
		37	our %COMMAND_TIME = ();
		38
		39	our @EXTS = (); # list of extension package names
		40	our %EXTCMD = ();
		41	our %EXT_CORO = (); # coroutines bound to extensions
		42	our %EXT_MAP = (); # pluggable maps
		43
19	our @EVENT;	44	our @EVENT;
20	our %PROP_TYPE;	45	our $LIBDIR = datadir . "/ext";
21	our %PROP_IDX;
22	our $LIBDIR = maps_directory "perl";
23		46
24	our $TICK = MAX_TIME * 1e-6;	47	our $TICK = MAX_TIME * 1e-6;
25	our $TICK_WATCHER;	48	our $TICK_WATCHER;
		49	our $AIO_POLL_WATCHER;
		50	our $WRITE_RUNTIME_WATCHER;
26	our $NEXT_TICK;	51	our $NEXT_TICK;
		52	our $NOW;
		53
		54	our %CFG;
		55
		56	our $UPTIME; $UPTIME ||= time;
		57	our $RUNTIME;
		58
		59	our %PLAYER; # all users
		60	our %MAP; # all maps
		61	our $LINK_MAP; # the special {link} map, which is always available
		62	our $RANDOM_MAPS = cf::localdir . "/random";
		63
		64	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		65	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		66
		67	# used to convert map paths into valid unix filenames by replacing / by ∕
		68	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		69
		70	binmode STDOUT;
		71	binmode STDERR;
		72
		73	# read virtual server time, if available
		74	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		75	open my $fh, "<", cf::localdir . "/runtime"
		76	or die "unable to read runtime file: $!";
		77	$RUNTIME = <$fh> + 0.;
		78	}
		79
		80	mkdir cf::localdir;
		81	mkdir cf::localdir . "/" . cf::playerdir;
		82	mkdir cf::localdir . "/" . cf::tmpdir;
		83	mkdir cf::localdir . "/" . cf::uniquedir;
		84	mkdir $RANDOM_MAPS;
		85
		86	our $EMERGENCY_POSITION;
		87
		88	#############################################################################
		89
		90	=head2 GLOBAL VARIABLES
		91
		92	=over 4
		93
		94	=item $cf::UPTIME
		95
		96	The timestamp of the server start (so not actually an uptime).
		97
		98	=item $cf::RUNTIME
		99
		100	The time this server has run, starts at 0 and is increased by $cf::TICK on
		101	every server tick.
		102
		103	=item $cf::LIBDIR
		104
		105	The perl library directory, where extensions and cf-specific modules can
		106	be found. It will be added to C<@INC> automatically.
		107
		108	=item $cf::NOW
		109
		110	The time of the last (current) server tick.
		111
		112	=item $cf::TICK
		113
		114	The interval between server ticks, in seconds.
		115
		116	=item %cf::CFG
		117
		118	Configuration for the server, loaded from C</etc/crossfire/config>, or
		119	from wherever your confdir points to.
		120
		121	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		122
		123	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		124	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		125	processing has been done. Call C<< ->wait >> on them to maximise the
		126	window of cpu time available, or simply to synchronise to the server tick.
		127
		128	=back
		129
		130	=cut
27		131
28	BEGIN {	132	BEGIN {
29	*CORE::GLOBAL::warn = sub {	133	*CORE::GLOBAL::warn = sub {
30	my $msg = join "", @_;	134	my $msg = join "", @_;
		135	utf8::encode $msg;
		136
31	$msg .= "\n"	137	$msg .= "\n"
32	unless $msg =~ /\n$/;	138	unless $msg =~ /\n$/;
33		139
34	print STDERR "cfperl: $msg";
35	LOG llevError, "cfperl: $msg";	140	LOG llevError, $msg;
36	};	141	};
37	}	142	}
38		143
39	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	144	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
40		145	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
41	# generate property mutators	146	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
42	sub prop_gen {	147	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
43	my ($prefix, $class) = @_;	148	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
44
45	no strict 'refs';
46
47	for my $prop (keys %PROP_TYPE) {
48	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
49	my $sub = lc $1;
50
51	my $type = $PROP_TYPE{$prop};
52	my $idx = $PROP_IDX {$prop};
53
54	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
55	$_[0]->get_property ($type, $idx)
56	};
57
58	*{"$class\::set_$sub"} = sub {
59	$_[0]->set_property ($type, $idx, $_[1]);
60	} unless $ignore_set{$prop};
61	}
62	}
63
64	# auto-generate most of the API
65
66	prop_gen OBJECT_PROP => "cf::object";
67	# CFAPI_OBJECT_ANIMATION?
68	prop_gen PLAYER_PROP => "cf::object::player";
69
70	prop_gen MAP_PROP => "cf::map";
71	prop_gen ARCH_PROP => "cf::arch";
72
73	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	149	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
74		150
75	# we bless all objects into (empty) derived classes to force a method lookup	151	# we bless all objects into (empty) derived classes to force a method lookup
76	# within the Safe compartment.	152	# within the Safe compartment.
77	for my $pkg (qw(cf::object cf::object::player cf::player cf::map cf::party cf::region cf::arch cf::living)) {	153	for my $pkg (qw(
		154	cf::global cf::attachable
		155	cf::object cf::object::player
		156	cf::client cf::player
		157	cf::arch cf::living
		158	cf::map cf::party cf::region
		159	)) {
78	no strict 'refs';	160	no strict 'refs';
79	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	161	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
80	}	162	}
81		163
82	$Event::DIED = sub {	164	$Event::DIED = sub {
83	warn "error in event callback: @_";	165	warn "error in event callback: @_";
84	};	166	};
85		167
86	my %ext_pkg;	168	=head2 UTILITY FUNCTIONS
87	my @exts;
88	my @hook;
89	my %command;
90	my %extcmd;
91		169
92	#############################################################################	170	=over 4
93	# utility functions	171
		172	=item dumpval $ref
		173
		174	=cut
		175
		176	sub dumpval {
		177	eval {
		178	local $SIG{__DIE__};
		179	my $d;
		180	if (1) {
		181	$d = new Data::Dumper([$_[0]], ["*var"]);
		182	$d->Terse(1);
		183	$d->Indent(2);
		184	$d->Quotekeys(0);
		185	$d->Useqq(1);
		186	#$d->Bless(...);
		187	$d->Seen($_[1]) if @_ > 1;
		188	$d = $d->Dump();
		189	}
		190	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		191	$d
		192	} || "[unable to dump $_[0]: '$@']";
		193	}
94		194
95	use JSON::Syck (); # TODO# replace by JSON::PC once working	195	use JSON::Syck (); # TODO# replace by JSON::PC once working
		196
		197	=item $ref = cf::from_json $json
		198
		199	Converts a JSON string into the corresponding perl data structure.
		200
		201	=cut
96		202
97	sub from_json($) {	203	sub from_json($) {
98	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs	204	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
99	JSON::Syck::Load $_[0]	205	JSON::Syck::Load $_[0]
100	}	206	}
101		207
		208	=item $json = cf::to_json $ref
		209
		210	Converts a perl data structure into its JSON representation.
		211
		212	=cut
		213
102	sub to_json($) {	214	sub to_json($) {
103	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	215	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
104	JSON::Syck::Dump $_[0]	216	JSON::Syck::Dump $_[0]
105	}	217	}
106		218
		219	=item cf::lock_wait $string
		220
		221	Wait until the given lock is available. See cf::lock_acquire.
		222
		223	=item my $lock = cf::lock_acquire $string
		224
		225	Wait until the given lock is available and then acquires it and returns
		226	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		227	for example when the coroutine gets canceled), the lock is automatically
		228	returned.
		229
		230	Lock names should begin with a unique identifier (for example, cf::map::find
		231	uses map_find and cf::map::load uses map_load).
		232
		233	=cut
		234
		235	our %LOCK;
		236
		237	sub lock_wait($) {
		238	my ($key) = @_;
		239
		240	# wait for lock, if any
		241	while ($LOCK{$key}) {
		242	push @{ $LOCK{$key} }, $Coro::current;
		243	Coro::schedule;
		244	}
		245	}
		246
		247	sub lock_acquire($) {
		248	my ($key) = @_;
		249
		250	# wait, to be sure we are not locked
		251	lock_wait $key;
		252
		253	$LOCK{$key} = [];
		254
		255	Coro::guard {
		256	# wake up all waiters, to be on the safe side
		257	$_->ready for @{ delete $LOCK{$key} };
		258	}
		259	}
		260
		261	sub freeze_mainloop {
		262	return unless $TICK_WATCHER->is_active;
		263
		264	my $guard = Coro::guard {
		265	$TICK_WATCHER->start;
		266	$WRITE_RUNTIME_WATCHER->start;
		267	};
		268	$WRITE_RUNTIME_WATCHER->stop;
		269	$TICK_WATCHER->stop;
		270	$guard
		271	}
		272
		273	=item cf::async { BLOCK }
		274
		275	Currently the same as Coro::async_pool, meaning you cannot use
		276	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		277	thing you are allowed to do is call C<prio> on it.
		278
		279	=cut
		280
		281	BEGIN { *async = \&Coro::async_pool }
		282
		283	=item cf::sync_job { BLOCK }
		284
		285	The design of crossfire+ requires that the main coro ($Coro::main) is
		286	always able to handle events or runnable, as crossfire+ is only partly
		287	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		288
		289	If it must be done, put the blocking parts into C<sync_job>. This will run
		290	the given BLOCK in another coroutine while waiting for the result. The
		291	server will be frozen during this time, so the block should either finish
		292	fast or be very important.
		293
		294	=cut
		295
		296	sub sync_job(&) {
		297	my ($job) = @_;
		298
		299	if ($Coro::current == $Coro::main) {
		300	# this is the main coro, too bad, we have to block
		301	# till the operation succeeds, freezing the server :/
		302
		303	# TODO: use suspend/resume instead
		304	# (but this is cancel-safe)
		305	my $freeze_guard = freeze_mainloop;
		306
		307	my $busy = 1;
		308	my @res;
		309
		310	(async {
		311	@res = eval { $job->() };
		312	warn $@ if $@;
		313	undef $busy;
		314	})->prio (Coro::PRIO_MAX);
		315
		316	while ($busy) {
		317	Coro::cede or Event::one_event;
		318	}
		319
		320	wantarray ? @res : $res[0]
		321	} else {
		322	# we are in another coroutine, how wonderful, everything just works
		323
		324	$job->()
		325	}
		326	}
		327
		328	=item $coro = cf::async_ext { BLOCK }
		329
		330	Like async, but this coro is automatically being canceled when the
		331	extension calling this is being unloaded.
		332
		333	=cut
		334
		335	sub async_ext(&) {
		336	my $cb = shift;
		337
		338	my $coro = &Coro::async ($cb);
		339
		340	$coro->on_destroy (sub {
		341	delete $EXT_CORO{$coro+0};
		342	});
		343	$EXT_CORO{$coro+0} = $coro;
		344
		345	$coro
		346	}
		347
		348	sub write_runtime {
		349	my $runtime = cf::localdir . "/runtime";
		350
		351	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		352	or return;
		353
		354	my $value = $cf::RUNTIME + 90 + 10;
		355	# 10 is the runtime save interval, for a monotonic clock
		356	# 60 allows for the watchdog to kill the server.
		357
		358	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		359	and return;
		360
		361	aio_fsync $fh
		362	and return;
		363
		364	close $fh
		365	or return;
		366
		367	aio_rename "$runtime~", $runtime
		368	and return;
		369
		370	1
		371	}
		372
		373	=back
		374
		375	=cut
		376
107	#############################################################################	377	#############################################################################
108	# "new" plug-in system
109		378
110	=item $object->attach ($attachment, key => $value...)	379	=head2 ATTACHABLE OBJECTS
111		380
112	=item $object->detach ($attachment)	381	Many objects in crossfire are so-called attachable objects. That means you can
		382	attach callbacks/event handlers (a collection of which is called an "attachment")
		383	to it. All such attachable objects support the following methods.
113		384
114	Attach/detach a pre-registered attachment to an object.	385	In the following description, CLASS can be any of C<global>, C<object>
		386	C<player>, C<client> or C<map> (i.e. the attachable objects in
		387	crossfire+).
115		388
116	=item $player->attach ($attachment, key => $value...)	389	=over 4
117		390
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	391	=item $attachable->attach ($attachment, key => $value...)
123		392
124	=item $map->detach ($attachment)	393	=item $attachable->detach ($attachment)
125		394
126	Attach/detach a pre-registered attachment to a map.	395	Attach/detach a pre-registered attachment to a specific object and give it
		396	the specified key/value pairs as arguments.
127		397
128	=item cf::attach_global ...	398	Example, attach a minesweeper attachment to the given object, making it a
		399	10x10 minesweeper game:
129		400
130	Attach handlers for global events.	401	$obj->attach (minesweeper => width => 10, height => 10);
131		402
132	This and all following C<attach_*>-functions expect any number of the	403	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	404
		405	Checks wether the named attachment is currently attached to the object.
		406
		407	=item cf::CLASS->attach ...
		408
		409	=item cf::CLASS->detach ...
		410
		411	Define an anonymous attachment and attach it to all objects of the given
		412	CLASS. See the next function for an explanation of its arguments.
		413
		414	You can attach to global events by using the C<cf::global> class.
		415
		416	Example, log all player logins:
		417
		418	cf::player->attach (
		419	on_login => sub {
		420	my ($pl) = @_;
		421	...
		422	},
		423	);
		424
		425	Example, attach to the jeweler skill:
		426
		427	cf::object->attach (
		428	type => cf::SKILL,
		429	subtype => cf::SK_JEWELER,
		430	on_use_skill => sub {
		431	my ($sk, $ob, $part, $dir, $msg) = @_;
		432	...
		433	},
		434	);
		435
		436	=item cf::CLASS::attachment $name, ...
		437
		438	Register an attachment by C<$name> through which attachable objects of the
		439	given CLASS can refer to this attachment.
		440
		441	Some classes such as crossfire maps and objects can specify attachments
		442	that are attached at load/instantiate time, thus the need for a name.
		443
		444	These calls expect any number of the following handler/hook descriptions:
134		445
135	=over 4	446	=over 4
136		447
137	=item prio => $number	448	=item prio => $number
138		449
…		…
140	by another C<prio> setting). Lower priority handlers get executed	451	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	452	earlier. The default priority is C<0>, and many built-in handlers are
142	registered at priority C<-1000>, so lower priorities should not be used	453	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	454	unless you know what you are doing.
144		455
		456	=item type => $type
		457
		458	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		459	given type of objects only (the additional parameter C<subtype> can be
		460	used to further limit to the given subtype).
		461
145	=item on_I<event> => \&cb	462	=item on_I<event> => \&cb
146		463
147	Call the given code reference whenever the named event happens (event is	464	Call the given code reference whenever the named event happens (event is
148	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which	465	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
149	handlers are recognised generally depends on the type of object these	466	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	475	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	476	object/class are recognised.
160		477
161	=back	478	=back
162		479
163	=item cf::attach_to_type $object_type, $subtype, ...	480	Example, define an attachment called "sockpuppet" that calls the given
		481	event handler when a monster attacks:
164		482
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	483	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	484	on_skill_attack => sub {
167	type.	485	my ($self, $victim) = @_;
		486	...
		487	}
		488	}
168		489
169	=item cf::attach_to_objects ...	490	=item $attachable->valid
170		491
171	Attach handlers to all objects. Do not use this except for debugging or	492	Just because you have a perl object does not mean that the corresponding
172	very rare events, as handlers are (obviously) called for I<all> objects in	493	C-level object still exists. If you try to access an object that has no
173	the game.	494	valid C counterpart anymore you get an exception at runtime. This method
174		495	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	496	exception.
176
177	Attach handlers to all players.
178
179	=item cf::attach_to_maps ...
180
181	Attach handlers to all maps.
182
183	=item cf:register_attachment $name, ...
184
185	Register an attachment by name through which objects can refer to this
186	attachment.
187
188	=item cf:register_map_attachment $name, ...
189
190	Register an attachment by name through which maps can refer to this
191	attachment.
192		497
193	=cut	498	=cut
194		499
195	# the following variables are defined in .xs and must not be re-created	500	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	501	our @CB_GLOBAL = (); # registry for all global events
		502	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	503	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	504	our @CB_PLAYER = ();
		505	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	506	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	507	our @CB_MAP = ();
201		508
202	my %attachment;	509	my %attachment;
203		510
		511	sub cf::attachable::thawer_merge {
		512	# simply override everything except _meta
		513	local $_[0]{_meta};
		514	%{$_[0]} = %{$_[1]};
		515	}
		516
204	sub _attach_cb($\%$$$) {	517	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	518	my ($registry, $event, $prio, $cb) = @_;
206		519
207	use sort 'stable';	520	use sort 'stable';
208		521
209	$cb = [$prio, $cb];	522	$cb = [$prio, $cb];
210		523
211	@{$registry->[$event]} = sort	524	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	525	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	526	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	527	}
		528
		529	# hack
		530	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		531
218	# attach handles attaching event callbacks	532	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	533	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	534	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	535	sub _attach {
222	my ($registry, $klass, @arg) = @_;	536	my ($registry, $klass, @arg) = @_;
223		537
		538	my $object_type;
224	my $prio = 0;	539	my $prio = 0;
225
226	my %undo = (
227	registry => $registry,
228	cb => [],
229	);
230
231	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	540	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		541
		542	#TODO: get rid of this hack
		543	if ($attachable_klass{$klass}) {
		544	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		545	}
232		546
233	while (@arg) {	547	while (@arg) {
234	my $type = shift @arg;	548	my $type = shift @arg;
235		549
236	if ($type eq "prio") {	550	if ($type eq "prio") {
237	$prio = shift @arg;	551	$prio = shift @arg;
238		552
		553	} elsif ($type eq "type") {
		554	$object_type = shift @arg;
		555	$registry = $CB_TYPE[$object_type] ||= [];
		556
		557	} elsif ($type eq "subtype") {
		558	defined $object_type or Carp::croak "subtype specified without type";
		559	my $object_subtype = shift @arg;
		560	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		561
239	} elsif ($type eq "package") {	562	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	563	my $pkg = shift @arg;
241		564
242	while (my ($name, $id) = each %cb_id) {	565	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	566	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	567	_attach_cb $registry, $id, $prio, $cb;
245	}	568	}
246	}	569	}
247		570
248	} elsif (exists $cb_id{$type}) {	571	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	572	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		573
251	} elsif (ref $type) {	574	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	575	warn "attaching objects not supported, ignoring.\n";
253		576
254	} else {	577	} else {
255	shift @arg;	578	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	579	warn "attach argument '$type' not supported, ignoring.\n";
257	}	580	}
258	}	581	}
259
260	\%undo
261	}	582	}
262		583
263	sub _attach_attachment {	584	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	585	my ($obj, $name, %arg) = @_;
265		586
266	my $res;	587	return if exists $obj->{_attachment}{$name};
267		588
268	if (my $attach = $attachment{$name}) {	589	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	590	my $registry = $obj->registry;
270		591
271	for (@$attach) {	592	for (@$attach) {
272	my ($klass, @attach) = @$_;	593	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	594	_attach $registry, $klass, @attach;
274	}	595	}
275		596
276	$obj->{$name} = \%arg;	597	$obj->{$name} = \%arg;
277	} else {	598	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	599	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	600	}
280		601
281	$obj->{_attachment}{$name} = undef;	602	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	603	}
286		604
287	*cf::object::attach =	605	sub cf::attachable::attach {
288	*cf::player::attach =	606	if (ref $_[0]) {
289	*cf::map::attach = sub {	607	_object_attach @_;
290	my ($obj, $name, %arg) = @_;	608	} else {
291		609	_attach shift->_attach_registry, @_;
292	_attach_attachment $obj, $name, %arg;	610	}
293	}	611	};
294		612
295	# all those should be optimised	613	# all those should be optimised
296	*cf::object::detach =	614	sub cf::attachable::detach {
297	*cf::player::detach =
298	*cf::map::detach = sub {
299	my ($obj, $name) = @_;	615	my ($obj, $name) = @_;
300		616
		617	if (ref $obj) {
301	delete $obj->{_attachment}{$name};	618	delete $obj->{_attachment}{$name};
302	reattach $obj;	619	reattach ($obj);
		620	} else {
		621	Carp::croak "cannot, currently, detach class attachments";
		622	}
303	};	623	};
304		624
305	sub attach_global {	625	sub cf::attachable::attached {
306	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	626	my ($obj, $name) = @_;
307	}
308		627
309	sub attach_to_type {	628	exists $obj->{_attachment}{$name}
310	my $type = shift;
311	my $subtype = shift;
312
313	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
314	}	629	}
315		630
316	sub attach_to_objects {	631	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
317	_attach @CB_OBJECT, KLASS_OBJECT, @_	632	eval "#line " . __LINE__ . " 'cf.pm'
318	}	633	sub cf::\L$klass\E::_attach_registry {
		634	(\\\@CB_$klass, KLASS_$klass)
		635	}
319		636
320	sub attach_to_players {	637	sub cf::\L$klass\E::attachment {
321	_attach @CB_PLAYER, KLASS_PLAYER, @_
322	}
323
324	sub attach_to_maps {
325	_attach @CB_MAP, KLASS_MAP, @_
326	}
327
328	sub register_attachment {
329	my $name = shift;	638	my \$name = shift;
330		639
331	$attachment{$name} = [[KLASS_OBJECT, @_]];
332	}
333
334	sub register_map_attachment {
335	my $name = shift;
336
337	$attachment{$name} = [[KLASS_MAP, @_]];	640	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		641	}
		642	";
		643	die if $@;
338	}	644	}
339		645
340	our $override;	646	our $override;
341	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	647	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
342		648
…		…
356	for (@$callbacks) {	662	for (@$callbacks) {
357	eval { &{$_->[1]} };	663	eval { &{$_->[1]} };
358		664
359	if ($@) {	665	if ($@) {
360	warn "$@";	666	warn "$@";
361	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	667	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
362	override;	668	override;
363	}	669	}
364		670
365	return 1 if $override;	671	return 1 if $override;
366	}	672	}
367		673
368	0	674	0
369	}	675	}
		676
		677	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		678
		679	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		680
		681	Generate an object-specific event with the given arguments.
		682
		683	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		684	removed in future versions), and there is no public API to access override
		685	results (if you must, access C<@cf::invoke_results> directly).
		686
		687	=back
		688
		689	=cut
370		690
371	#############################################################################	691	#############################################################################
372	# object support	692	# object support
373		693
374	sub instantiate {
375	my ($obj, $data) = @_;
376
377	$data = from_json $data;
378
379	for (@$data) {
380	my ($name, $args) = @$_;
381
382	$obj->attach ($name, %{$args || {} });
383	}
384	}
385
386	# basically do the same as instantiate, without calling instantiate
387	sub reattach {	694	sub reattach {
		695	# basically do the same as instantiate, without calling instantiate
388	my ($obj) = @_;	696	my ($obj) = @_;
		697
		698	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		699
389	my $registry = $obj->registry;	700	my $registry = $obj->registry;
390		701
391	@$registry = ();	702	@$registry = ();
392		703
393	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	704	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
394		705
395	for my $name (keys %{ $obj->{_attachment} || {} }) {	706	for my $name (keys %{ $obj->{_attachment} || {} }) {
396	if (my $attach = $attachment{$name}) {	707	if (my $attach = $attachment{$name}) {
397	for (@$attach) {	708	for (@$attach) {
398	my ($klass, @attach) = @$_;	709	my ($klass, @attach) = @$_;
399	_attach @$registry, $klass, @attach;	710	_attach $registry, $klass, @attach;
400	}	711	}
401	} else {	712	} else {
402	warn "object uses attachment '$name' that is not available, postponing.\n";	713	warn "object uses attachment '$name' that is not available, postponing.\n";
403	}	714	}
404	}	715	}
405	}	716	}
406		717
407	sub object_freezer_save {	718	cf::attachable->attach (
408	my ($filename, $objs) = @_;
409
410	if (@$objs) {
411	open my $fh, ">:raw", "$filename.pst~";
412	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
413	close $fh;
414	chmod SAVE_MODE, "$filename.pst~";
415	rename "$filename.pst~", "$filename.pst";
416	} else {
417	unlink "$filename.pst";
418	}
419
420	chmod SAVE_MODE, "$filename~";
421	rename "$filename~", $filename;
422	}
423
424	sub object_thawer_load {
425	my ($filename) = @_;
426
427	open my $fh, "<:raw:perlio", "$filename.pst"
428	or return;
429
430	eval { local $/; (Storable::thaw <$fh>)->{objs} }
431	}
432
433	attach_to_objects
434	prio => -1000000,	719	prio => -1000000,
		720	on_instantiate => sub {
		721	my ($obj, $data) = @_;
		722
		723	$data = from_json $data;
		724
		725	for (@$data) {
		726	my ($name, $args) = @$_;
		727
		728	$obj->attach ($name, %{$args || {} });
		729	}
		730	},
		731	on_reattach => \&reattach,
435	on_clone => sub {	732	on_clone => sub {
436	my ($src, $dst) = @_;	733	my ($src, $dst) = @_;
437		734
438	@{$dst->registry} = @{$src->registry};	735	@{$dst->registry} = @{$src->registry};
439		736
440	%$dst = %$src;	737	%$dst = %$src;
441		738
442	%{$dst->{_attachment}} = %{$src->{_attachment}}	739	%{$dst->{_attachment}} = %{$src->{_attachment}}
443	if exists $src->{_attachment};	740	if exists $src->{_attachment};
444	},	741	},
445	;	742	);
		743
		744	sub object_freezer_save {
		745	my ($filename, $rdata, $objs) = @_;
		746
		747	sync_job {
		748	if (length $$rdata) {
		749	warn sprintf "saving %s (%d,%d)\n",
		750	$filename, length $$rdata, scalar @$objs;
		751
		752	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		753	chmod SAVE_MODE, $fh;
		754	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		755	aio_fsync $fh;
		756	close $fh;
		757
		758	if (@$objs) {
		759	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		760	chmod SAVE_MODE, $fh;
		761	my $data = Storable::nfreeze { version => 1, objs => $objs };
		762	aio_write $fh, 0, (length $data), $data, 0;
		763	aio_fsync $fh;
		764	close $fh;
		765	aio_rename "$filename.pst~", "$filename.pst";
		766	}
		767	} else {
		768	aio_unlink "$filename.pst";
		769	}
		770
		771	aio_rename "$filename~", $filename;
		772	} else {
		773	warn "FATAL: $filename~: $!\n";
		774	}
		775	} else {
		776	aio_unlink $filename;
		777	aio_unlink "$filename.pst";
		778	}
		779	}
		780	}
		781
		782	sub object_freezer_as_string {
		783	my ($rdata, $objs) = @_;
		784
		785	use Data::Dumper;
		786
		787	$$rdata . Dumper $objs
		788	}
		789
		790	sub object_thawer_load {
		791	my ($filename) = @_;
		792
		793	my ($data, $av);
		794
		795	(aio_load $filename, $data) >= 0
		796	or return;
		797
		798	unless (aio_stat "$filename.pst") {
		799	(aio_load "$filename.pst", $av) >= 0
		800	or return;
		801	$av = eval { (Storable::thaw $av)->{objs} };
		802	}
		803
		804	warn sprintf "loading %s (%d)\n",
		805	$filename, length $data, scalar @{$av || []};#d#
		806	return ($data, $av);
		807	}
446		808
447	#############################################################################	809	#############################################################################
448	# old plug-in events	810	# command handling &c
449		811
450	sub inject_event {	812	=item cf::register_command $name => \&callback($ob,$args);
451	my $extension = shift;
452	my $event_code = shift;
453		813
454	my $cb = $hook[$event_code]{$extension}	814	Register a callback for execution when the client sends the user command
455	or return;	815	$name.
456		816
457	&$cb	817	=cut
458	}
459
460	sub inject_global_event {
461	my $event = shift;
462
463	my $cb = $hook[$event]
464	or return;
465
466	List::Util::max map &$_, values %$cb
467	}
468
469	sub inject_command {
470	my ($name, $obj, $params) = @_;
471
472	for my $cmd (@{ $command{$name} }) {
473	$cmd->[1]->($obj, $params);
474	}
475
476	-1
477	}
478		818
479	sub register_command {	819	sub register_command {
480	my ($name, $time, $cb) = @_;	820	my ($name, $cb) = @_;
481		821
482	my $caller = caller;	822	my $caller = caller;
483	#warn "registering command '$name/$time' to '$caller'";	823	#warn "registering command '$name/$time' to '$caller'";
484		824
485	push @{ $command{$name} }, [$time, $cb, $caller];	825	push @{ $COMMAND{$name} }, [$caller, $cb];
486	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
487	}	826	}
		827
		828	=item cf::register_extcmd $name => \&callback($pl,$packet);
		829
		830	Register a callbackf ro execution when the client sends an extcmd packet.
		831
		832	If the callback returns something, it is sent back as if reply was being
		833	called.
		834
		835	=cut
488		836
489	sub register_extcmd {	837	sub register_extcmd {
490	my ($name, $cb) = @_;	838	my ($name, $cb) = @_;
491		839
492	my $caller = caller;	840	$EXTCMD{$name} = $cb;
493	#warn "registering extcmd '$name' to '$caller'";
494
495	$extcmd{$name} = [$cb, $caller];
496	}	841	}
497		842
498	sub register {	843	cf::player->attach (
499	my ($base, $pkg) = @_;	844	on_command => sub {
		845	my ($pl, $name, $params) = @_;
500		846
501	#TODO	847	my $cb = $COMMAND{$name}
502	}	848	or return;
		849
		850	for my $cmd (@$cb) {
		851	$cmd->[1]->($pl->ob, $params);
		852	}
		853
		854	cf::override;
		855	},
		856	on_extcmd => sub {
		857	my ($pl, $buf) = @_;
		858
		859	my $msg = eval { from_json $buf };
		860
		861	if (ref $msg) {
		862	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		863	if (my %reply = $cb->($pl, $msg)) {
		864	$pl->ext_reply ($msg->{msgid}, %reply);
		865	}
		866	}
		867	} else {
		868	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		869	}
		870
		871	cf::override;
		872	},
		873	);
503		874
504	sub load_extension {	875	sub load_extension {
505	my ($path) = @_;	876	my ($path) = @_;
506		877
507	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	878	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
508	my $base = $1;	879	my $base = $1;
509	my $pkg = $1;	880	my $pkg = $1;
510	$pkg =~ s/[^[:word:]]/_/g;	881	$pkg =~ s/[^[:word:]]/_/g;
511	$pkg = "ext::$pkg";	882	$pkg = "ext::$pkg";
512		883
513	warn "loading '$path' into '$pkg'\n";	884	warn "... loading '$path' into '$pkg'\n";
514		885
515	open my $fh, "<:utf8", $path	886	open my $fh, "<:utf8", $path
516	or die "$path: $!";	887	or die "$path: $!";
517		888
518	my $source =	889	my $source =
519	"package $pkg; use strict; use utf8;\n"	890	"package $pkg; use strict; use utf8;\n"
520	. "#line 1 \"$path\"\n{\n"	891	. "#line 1 \"$path\"\n{\n"
521	. (do { local $/; <$fh> })	892	. (do { local $/; <$fh> })
522	. "\n};\n1";	893	. "\n};\n1";
523		894
524	eval $source	895	unless (eval $source) {
525	or die "$path: $@";	896	my $msg = $@ ? "$path: $@\n"
526		897	: "extension disabled.\n";
527	push @exts, $pkg;	898	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
528	$ext_pkg{$base} = $pkg;	899	warn $@;
529		900	warn "mandatory extension failed to load, exiting.\n";
530	# no strict 'refs';	901	exit 1;
531	# @{"$pkg\::ISA"} = ext::;	902	}
532		903	die $@;
533	register $base, $pkg;
534	}
535
536	sub unload_extension {
537	my ($pkg) = @_;
538
539	warn "removing extension $pkg\n";
540
541	# remove hooks
542	#TODO
543	# for my $idx (0 .. $#PLUGIN_EVENT) {
544	# delete $hook[$idx]{$pkg};
545	# }	904	}
546		905
547	# remove commands	906	push @EXTS, $pkg;
548	for my $name (keys %command) {
549	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
550
551	if (@cb) {
552	$command{$name} = \@cb;
553	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
554	} else {
555	delete $command{$name};
556	delete $COMMAND{"$name\000"};
557	}
558	}
559
560	# remove extcmds
561	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
562	delete $extcmd{$name};
563	}
564
565	if (my $cb = $pkg->can ("unload")) {
566	eval {
567	$cb->($pkg);
568	1
569	} or warn "$pkg unloaded, but with errors: $@";
570	}
571
572	Symbol::delete_package $pkg;
573	}	907	}
574		908
575	sub load_extensions {	909	sub load_extensions {
576	my $LIBDIR = maps_directory "perl";
577
578	for my $ext (<$LIBDIR/*.ext>) {	910	for my $ext (<$LIBDIR/*.ext>) {
579	next unless -r $ext;	911	next unless -r $ext;
580	eval {	912	eval {
581	load_extension $ext;	913	load_extension $ext;
582	1	914	1
583	} or warn "$ext not loaded: $@";	915	} or warn "$ext not loaded: $@";
584	}	916	}
585	}	917	}
586		918
587	sub _perl_reload(&) {	919	#############################################################################
		920
		921	=head2 CORE EXTENSIONS
		922
		923	Functions and methods that extend core crossfire objects.
		924
		925	=cut
		926
		927	package cf::player;
		928
		929	use Coro::AIO;
		930
		931	=head3 cf::player
		932
		933	=over 4
		934
		935	=item cf::player::find $login
		936
		937	Returns the given player object, loading it if necessary (might block).
		938
		939	=cut
		940
		941	sub playerdir($) {
		942	cf::localdir
		943	. "/"
		944	. cf::playerdir
		945	. "/"
		946	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		947	}
		948
		949	sub path($) {
		950	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		951
		952	(playerdir $login) . "/$login.pl"
		953	}
		954
		955	sub find_active($) {
		956	$cf::PLAYER{$_[0]}
		957	and $cf::PLAYER{$_[0]}->active
		958	and $cf::PLAYER{$_[0]}
		959	}
		960
		961	sub exists($) {
		962	my ($login) = @_;
		963
		964	$cf::PLAYER{$login}
		965	or cf::sync_job { !aio_stat path $login }
		966	}
		967
		968	sub find($) {
		969	return $cf::PLAYER{$_[0]} || do {
		970	my $login = $_[0];
		971
		972	my $guard = cf::lock_acquire "user_find:$login";
		973
		974	$cf::PLAYER{$_[0]} || do {
		975	my $pl = load_pl path $login
		976	or return;
		977	$cf::PLAYER{$login} = $pl
		978	}
		979	}
		980	}
		981
		982	sub save($) {
		983	my ($pl) = @_;
		984
		985	return if $pl->{deny_save};
		986
		987	my $path = path $pl;
		988	my $guard = cf::lock_acquire "user_save:$path";
		989
		990	return if $pl->{deny_save};
		991
		992	aio_mkdir playerdir $pl, 0770;
		993	$pl->{last_save} = $cf::RUNTIME;
		994
		995	$pl->save_pl ($path);
		996	Coro::cede;
		997	}
		998
		999	sub new($) {
		1000	my ($login) = @_;
		1001
		1002	my $self = create;
		1003
		1004	$self->ob->name ($login);
		1005	$self->{deny_save} = 1;
		1006
		1007	$cf::PLAYER{$login} = $self;
		1008
		1009	$self
		1010	}
		1011
		1012	=item $pl->quit_character
		1013
		1014	Nukes the player without looking back. If logged in, the connection will
		1015	be destroyed. May block for a long time.
		1016
		1017	=cut
		1018
		1019	sub quit_character {
		1020	my ($pl) = @_;
		1021
		1022	$pl->{deny_save} = 1;
		1023	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1024
		1025	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1026	$pl->deactivate;
		1027	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1028	$pl->ns->destroy if $pl->ns;
		1029
		1030	my $path = playerdir $pl;
		1031	my $temp = "$path~$cf::RUNTIME~deleting~";
		1032	aio_rename $path, $temp;
		1033	delete $cf::PLAYER{$pl->ob->name};
		1034	$pl->destroy;
		1035	IO::AIO::aio_rmtree $temp;
		1036	}
		1037
		1038	=item cf::player::list_logins
		1039
		1040	Returns am arrayref of all valid playernames in the system, can take a
		1041	while and may block, so not sync_job-capable, ever.
		1042
		1043	=cut
		1044
		1045	sub list_logins {
		1046	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1047	or return [];
		1048
		1049	my @logins;
		1050
		1051	for my $login (@$dirs) {
		1052	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1053	aio_read $fh, 0, 512, my $buf, 0 or next;
		1054	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1055
		1056	utf8::decode $login;
		1057	push @logins, $login;
		1058	}
		1059
		1060	\@logins
		1061	}
		1062
		1063	=item $player->maps
		1064
		1065	Returns an arrayref of map paths that are private for this
		1066	player. May block.
		1067
		1068	=cut
		1069
		1070	sub maps($) {
		1071	my ($pl) = @_;
		1072
		1073	my $files = aio_readdir playerdir $pl
		1074	or return;
		1075
		1076	my @paths;
		1077
		1078	for (@$files) {
		1079	utf8::decode $_;
		1080	next if /\.(?:pl|pst)$/;
		1081	next unless /^$PATH_SEP/o;
		1082
		1083	s/\.map$//;
		1084	push @paths, "~" . $pl->ob->name . "/" . $_;
		1085	}
		1086
		1087	\@paths
		1088	}
		1089
		1090	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1091
		1092	Sends an ext reply to the player.
		1093
		1094	=cut
		1095
		1096	sub ext_reply($$$%) {
		1097	my ($self, $id, %msg) = @_;
		1098
		1099	$msg{msgid} = $id;
		1100
		1101	$self->send ("ext " . cf::to_json \%msg);
		1102	}
		1103
		1104	package cf;
		1105
		1106	=back
		1107
		1108
		1109	=head3 cf::map
		1110
		1111	=over 4
		1112
		1113	=cut
		1114
		1115	package cf::map;
		1116
		1117	use Fcntl;
		1118	use Coro::AIO;
		1119
		1120	use overload
		1121	'""' => \&as_string,
		1122	fallback => 1;
		1123
		1124	our $MAX_RESET = 3600;
		1125	our $DEFAULT_RESET = 3000;
		1126
		1127	sub generate_random_map {
		1128	my ($self, $rmp) = @_;
		1129	# mit "rum" bekleckern, nicht
		1130	$self->_create_random_map (
		1131	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1132	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1133	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1134	$rmp->{exit_on_final_map},
		1135	$rmp->{xsize}, $rmp->{ysize},
		1136	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1137	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1138	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1139	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1140	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1141	(cf::region::find $rmp->{region}), $rmp->{custom}
		1142	)
		1143	}
		1144
		1145	sub register {
		1146	my (undef, $regex) = @_;
		1147	my $pkg = caller;
		1148
		1149	no strict;
		1150	push @{"$pkg\::ISA"}, __PACKAGE__;
		1151
		1152	$EXT_MAP{$pkg} = qr<$regex>;
		1153	}
		1154
		1155	# also paths starting with '/'
		1156	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1157
		1158	sub thawer_merge {
		1159	my ($self, $merge) = @_;
		1160
		1161	# we have to keep some variables in memory intact
		1162	local $self->{path};
		1163	local $self->{load_path};
		1164	local $self->{deny_save};
		1165	local $self->{deny_reset};
		1166
		1167	$self->SUPER::thawer_merge ($merge);
		1168	}
		1169
		1170	sub normalise {
		1171	my ($path, $base) = @_;
		1172
		1173	# map plan:
		1174	#
		1175	# /! non-realised random map exit (special hack!)
		1176	# {... are special paths that are not being touched
		1177	# ?xxx/... are special absolute paths
		1178	# ?random/... random maps
		1179	# /... normal maps
		1180	# ~user/... per-player map of a specific user
		1181
		1182	$path =~ s/$PATH_SEP/\//go;
		1183
		1184	# treat it as relative path if it starts with
		1185	# something that looks reasonable
		1186	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1187	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1188
		1189	$base =~ s{[^/]+/?$}{};
		1190	$path = "$base/$path";
		1191	}
		1192
		1193	for ($path) {
		1194	redo if s{//}{/};
		1195	redo if s{/\.?/}{/};
		1196	redo if s{/[^/]+/\.\./}{/};
		1197	}
		1198
		1199	$path
		1200	}
		1201
		1202	sub new_from_path {
		1203	my (undef, $path, $base) = @_;
		1204
		1205	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1206
		1207	$path = normalise $path, $base;
		1208
		1209	for my $pkg (keys %EXT_MAP) {
		1210	if ($path =~ $EXT_MAP{$pkg}) {
		1211	my $self = bless cf::map::new, $pkg;
		1212	$self->{path} = $path; $self->path ($path);
		1213	$self->init; # pass $1 etc.
		1214	return $self;
		1215	}
		1216	}
		1217
		1218	Carp::carp "unable to resolve path '$path'.";
		1219	()
		1220	}
		1221
		1222	sub init {
		1223	my ($self) = @_;
		1224
		1225	$self
		1226	}
		1227
		1228	sub as_string {
		1229	my ($self) = @_;
		1230
		1231	"$self->{path}"
		1232	}
		1233
		1234	# the displayed name, this is a one way mapping
		1235	sub visible_name {
		1236	&as_string
		1237	}
		1238
		1239	# the original (read-only) location
		1240	sub load_path {
		1241	my ($self) = @_;
		1242
		1243	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1244	}
		1245
		1246	# the temporary/swap location
		1247	sub save_path {
		1248	my ($self) = @_;
		1249
		1250	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1251	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1252	}
		1253
		1254	# the unique path, undef == no special unique path
		1255	sub uniq_path {
		1256	my ($self) = @_;
		1257
		1258	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1259	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1260	}
		1261
		1262	# and all this just because we cannot iterate over
		1263	# all maps in C++...
		1264	sub change_all_map_light {
		1265	my ($change) = @_;
		1266
		1267	$_->change_map_light ($change)
		1268	for grep $_->outdoor, values %cf::MAP;
		1269	}
		1270
		1271	sub unlink_save {
		1272	my ($self) = @_;
		1273
		1274	utf8::encode (my $save = $self->save_path);
		1275	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1276	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1277	}
		1278
		1279	sub load_header_from($) {
		1280	my ($self, $path) = @_;
		1281
		1282	utf8::encode $path;
		1283	aio_open $path, O_RDONLY, 0
		1284	or return;
		1285
		1286	$self->_load_header ($path)
		1287	or return;
		1288
		1289	$self->{load_path} = $path;
		1290
		1291	1
		1292	}
		1293
		1294	sub load_orig {
		1295	my ($self) = @_;
		1296
		1297	$self->load_header_from ($self->load_path)
		1298	}
		1299
		1300	sub load_temp {
		1301	my ($self) = @_;
		1302
		1303	$self->load_header_from ($self->save_path)
		1304	}
		1305
		1306	sub load_header {
		1307	my ($self) = @_;
		1308
		1309	if ($self->load_temp) {
		1310	$self->last_access ((delete $self->{last_access})
		1311	|| $cf::RUNTIME); #d#
		1312	# safety
		1313	$self->{instantiate_time} = $cf::RUNTIME
		1314	if $self->{instantiate_time} > $cf::RUNTIME;
		1315	} else {
		1316	$self->load_orig
		1317	or return;
		1318
		1319	$self->{load_original} = 1;
		1320	$self->{instantiate_time} = $cf::RUNTIME;
		1321	$self->last_access ($cf::RUNTIME);
		1322	$self->instantiate;
		1323	}
		1324
		1325	1
		1326	}
		1327
		1328	sub find;
		1329	sub find {
		1330	my ($path, $origin) = @_;
		1331
		1332	$path = normalise $path, $origin && $origin->path;
		1333
		1334	cf::lock_wait "map_find:$path";
		1335
		1336	$cf::MAP{$path} || do {
		1337	my $guard = cf::lock_acquire "map_find:$path";
		1338	my $map = new_from_path cf::map $path
		1339	or return;
		1340
		1341	$map->{last_save} = $cf::RUNTIME;
		1342
		1343	$map->load_header
		1344	or return;
		1345
		1346	if ($map->should_reset) {
		1347	# doing this can freeze the server in a sync job, obviously
		1348	#$cf::WAIT_FOR_TICK->wait;
		1349	$map->reset;
		1350	undef $guard;
		1351	$map = find $path
		1352	or return;
		1353	}
		1354
		1355	$cf::MAP{$path} = $map
		1356	}
		1357	}
		1358
		1359	sub load {
		1360	my ($self) = @_;
		1361
		1362	my $path = $self->{path};
		1363	my $guard = cf::lock_acquire "map_load:$path";
		1364
		1365	return if $self->in_memory != cf::MAP_SWAPPED;
		1366
		1367	$self->in_memory (cf::MAP_LOADING);
		1368
		1369	$self->alloc;
		1370	$self->_load_objects ($self->{load_path}, 1)
		1371	or return;
		1372
		1373	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1374	if delete $self->{load_original};
		1375
		1376	if (my $uniq = $self->uniq_path) {
		1377	utf8::encode $uniq;
		1378	if (aio_open $uniq, O_RDONLY, 0) {
		1379	$self->clear_unique_items;
		1380	$self->_load_objects ($uniq, 0);
		1381	}
		1382	}
		1383
		1384	Coro::cede;
		1385
		1386	# now do the right thing for maps
		1387	$self->link_multipart_objects;
		1388
		1389	unless ($self->{deny_activate}) {
		1390	$self->decay_objects;
		1391	$self->fix_auto_apply;
		1392	$self->update_buttons;
		1393	Coro::cede;
		1394	$self->set_darkness_map;
		1395	$self->difficulty ($self->estimate_difficulty)
		1396	unless $self->difficulty;
		1397	Coro::cede;
		1398	$self->activate;
		1399	}
		1400
		1401	$self->in_memory (cf::MAP_IN_MEMORY);
		1402	}
		1403
		1404	sub customise_for {
		1405	my ($self, $ob) = @_;
		1406
		1407	return find "~" . $ob->name . "/" . $self->{path}
		1408	if $self->per_player;
		1409
		1410	$self
		1411	}
		1412
		1413	# find and load all maps in the 3x3 area around a map
		1414	sub load_diag {
588	my ($msg) = @_;	1415	my ($map) = @_;
589		1416
590	$msg->("reloading...");	1417	my @diag; # diagonal neighbours
591		1418
592	eval {	1419	for (0 .. 3) {
593	# 1. cancel all watchers	1420	my $neigh = $map->tile_path ($_)
594	$_->cancel for Event::all_watchers;	1421	or next;
		1422	$neigh = find $neigh, $map
		1423	or next;
		1424	$neigh->load;
595		1425
596	# 2. unload all extensions	1426	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
597	for (@exts) {	1427	[$neigh->tile_path (($_ + 1) % 4), $neigh];
598	$msg->("unloading <$_>");	1428	}
599	unload_extension $_;
600	}
601		1429
602	# 3. unload all modules loaded from $LIBDIR	1430	for (@diag) {
603	while (my ($k, $v) = each %INC) {	1431	my $neigh = find @$_
604	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	1432	or next;
		1433	$neigh->load;
		1434	}
		1435	}
605		1436
606	$msg->("removing <$k>");	1437	sub find_sync {
607	delete $INC{$k};	1438	my ($path, $origin) = @_;
608		1439
609	$k =~ s/\.pm$//;	1440	cf::sync_job { find $path, $origin }
610	$k =~ s/\//::/g;	1441	}
611		1442
612	if (my $cb = $k->can ("unload_module")) {	1443	sub do_load_sync {
613	$cb->();	1444	my ($map) = @_;
		1445
		1446	cf::sync_job { $map->load };
		1447	}
		1448
		1449	our %MAP_PREFETCH;
		1450	our $MAP_PREFETCHER = undef;
		1451
		1452	sub find_async {
		1453	my ($path, $origin) = @_;
		1454
		1455	$path = normalise $path, $origin && $origin->{path};
		1456
		1457	if (my $map = $cf::MAP{$path}) {
		1458	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1459	}
		1460
		1461	undef $MAP_PREFETCH{$path};
		1462	$MAP_PREFETCHER ||= cf::async {
		1463	while (%MAP_PREFETCH) {
		1464	for my $path (keys %MAP_PREFETCH) {
		1465	my $map = find $path
		1466	or next;
		1467	$map->load;
		1468
		1469	delete $MAP_PREFETCH{$path};
614	}	1470	}
615
616	Symbol::delete_package $k;
617	}
618
619	# 4. get rid of safe::, as good as possible
620	Symbol::delete_package "safe::$_"
621	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);
622
623	# 5. remove register_script_function callbacks
624	# TODO
625		1471	}
626	# 6. unload cf.pm "a bit"	1472	undef $MAP_PREFETCHER;
627	delete $INC{"cf.pm"};
628
629	# don't, removes xs symbols, too,
630	# and global variables created in xs
631	#Symbol::delete_package __PACKAGE__;
632
633	# 7. reload cf.pm
634	$msg->("reloading cf.pm");
635	require cf;
636	};	1473	};
637	$msg->($@) if $@;
638		1474
639	$msg->("reloaded");	1475	()
640	};	1476	}
641		1477
642	sub perl_reload() {	1478	sub save {
643	_perl_reload {	1479	my ($self) = @_;
644	warn $_[0];	1480
645	print "$_[0]\n";	1481	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1482
		1483	$self->{last_save} = $cf::RUNTIME;
		1484
		1485	return unless $self->dirty;
		1486
		1487	my $save = $self->save_path; utf8::encode $save;
		1488	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1489
		1490	$self->{load_path} = $save;
		1491
		1492	return if $self->{deny_save};
		1493
		1494	local $self->{last_access} = $self->last_access;#d#
		1495
		1496	cf::async {
		1497	$_->contr->save for $self->players;
646	};	1498	};
647	}
648		1499
649	register_command "perl-reload", 0, sub {	1500	if ($uniq) {
650	my ($who, $arg) = @_;	1501	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
651		1502	$self->_save_objects ($uniq, cf::IO_UNIQUES);
652	if ($who->flag (FLAG_WIZ)) {
653	_perl_reload {
654	warn $_[0];
655	$who->message ($_[0]);
656	};
657	}
658	};
659
660	#############################################################################
661	# extcmd framework, basically convert ext <msg>
662	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
663
664	attach_to_players
665	on_extcmd => sub {
666	my ($pl, $buf) = @_;
667
668	my $msg = eval { from_json $buf };
669
670	if (ref $msg) {
671	if (my $cb = $extcmd{$msg->{msgtype}}) {
672	if (my %reply = $cb->[0]->($pl, $msg)) {
673	$pl->ext_reply ($msg->{msgid}, %reply);
674	}
675	}
676	} else {	1503	} else {
677	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	1504	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
678	}
679
680	cf::override;
681	},	1505	}
682	;	1506	}
683		1507
684	#############################################################################	1508	sub swap_out {
685	# load/save/clean perl data associated with a map
686
687	*cf::mapsupport::on_clean = sub {
688	my ($map) = @_;	1509	my ($self) = @_;
689		1510
690	my $path = $map->tmpname;	1511	# save first because save cedes
691	defined $path or return;	1512	$self->save;
692		1513
693	unlink "$path.pst";	1514	my $lock = cf::lock_acquire "map_data:" . $self->path;
694	};
695		1515
696	# old style persistent data, TODO: remove #d#	1516	return if $self->players;
697	*cf::mapsupport::on_swapin =	1517	return if $self->in_memory != cf::MAP_IN_MEMORY;
698	*cf::mapsupport::on_load = sub {	1518	return if $self->{deny_save};
		1519
		1520	$self->clear;
		1521	$self->in_memory (cf::MAP_SWAPPED);
		1522	}
		1523
		1524	sub reset_at {
699	my ($map) = @_;	1525	my ($self) = @_;
700		1526
701	my $path = $map->tmpname;	1527	# TODO: safety, remove and allow resettable per-player maps
702	$path = $map->path unless defined $path;	1528	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1529	return 1e99 if $self->{deny_reset};
703		1530
704	open my $fh, "<:raw", "$path.cfperl"	1531	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
705	or return; # no perl data	1532	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
706		1533
707	my $data = Storable::thaw do { local $/; <$fh> };	1534	$time + $to
		1535	}
708		1536
709	$data->{version} <= 1	1537	sub should_reset {
		1538	my ($self) = @_;
		1539
		1540	$self->reset_at <= $cf::RUNTIME
		1541	}
		1542
		1543	sub reset {
		1544	my ($self) = @_;
		1545
		1546	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1547
		1548	return if $self->players;
		1549	return if $self->isa ("ext::map_per_player");#d#
		1550
		1551	warn "resetting map ", $self->path;#d#
		1552
		1553	delete $cf::MAP{$self->path};
		1554
		1555	$self->in_memory (cf::MAP_SWAPPED);
		1556	$self->clear;
		1557
		1558	$_->clear_links_to ($self) for values %cf::MAP;
		1559
		1560	$self->unlink_save;
		1561	$self->destroy;
		1562	}
		1563
		1564	my $nuke_counter = "aaaa";
		1565
		1566	sub nuke {
		1567	my ($self) = @_;
		1568
		1569	delete $cf::MAP{$self->path};
		1570
		1571	$self->unlink_save;
		1572
		1573	bless $self, "cf::map";
		1574	delete $self->{deny_reset};
		1575	$self->{deny_save} = 1;
		1576	$self->reset_timeout (1);
		1577	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1578
		1579	$cf::MAP{$self->path} = $self;
		1580
		1581	$self->reset; # polite request, might not happen
		1582	}
		1583
		1584	=item cf::map::unique_maps
		1585
		1586	Returns an arrayref of paths of all shared maps that have
		1587	instantiated unique items. May block.
		1588
		1589	=cut
		1590
		1591	sub unique_maps() {
		1592	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
710	or return; # too new	1593	or return;
711		1594
712	$map->_set_obs ($data->{obs});	1595	my @paths;
713	$map->invoke (EVENT_MAP_UPGRADE);
714	};
715		1596
716	attach_to_maps prio => -10000, package => cf::mapsupport::;	1597	for (@$files) {
		1598	utf8::decode $_;
		1599	next if /\.pst$/;
		1600	next unless /^$PATH_SEP/o;
717		1601
718	#############################################################################	1602	s/\.map$//;
719	# load/save perl data associated with player->ob objects	1603	push @paths, $_;
720
721	sub all_objects(@) {
722	@_, map all_objects ($_->inv), @_
723	}
724
725	attach_to_players
726	on_load => sub {
727	my ($pl, $path) = @_;
728
729	for my $o (all_objects $pl->ob) {
730	if (my $value = $o->get_ob_key_value ("_perl_data")) {
731	$o->set_ob_key_value ("_perl_data");
732
733	%$o = %{ Storable::thaw pack "H*", $value };
734	}
735	}
736	},	1604	}
737	;
738		1605
739	#############################################################################	1606	\@paths
740	# core extensions - in perl
741
742	=item cf::player::exists $login
743
744	Returns true when the given account exists.
745
746	=cut
747
748	sub cf::player::exists($) {
749	cf::player::find $_[0]
750	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
751	}	1607	}
752		1608
		1609	package cf;
		1610
		1611	=back
		1612
		1613	=head3 cf::object
		1614
		1615	=cut
		1616
		1617	package cf::object;
		1618
		1619	=over 4
		1620
		1621	=item $ob->inv_recursive
		1622
		1623	Returns the inventory of the object _and_ their inventories, recursively.
		1624
		1625	=cut
		1626
		1627	sub inv_recursive_;
		1628	sub inv_recursive_ {
		1629	map { $_, inv_recursive_ $_->inv } @_
		1630	}
		1631
		1632	sub inv_recursive {
		1633	inv_recursive_ inv $_[0]
		1634	}
		1635
		1636	package cf;
		1637
		1638	=back
		1639
		1640	=head3 cf::object::player
		1641
		1642	=over 4
		1643
753	=item $player->reply ($npc, $msg[, $flags])	1644	=item $player_object->reply ($npc, $msg[, $flags])
754		1645
755	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1646	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
756	can be C<undef>. Does the right thing when the player is currently in a	1647	can be C<undef>. Does the right thing when the player is currently in a
757	dialogue with the given NPC character.	1648	dialogue with the given NPC character.
758		1649
759	=cut	1650	=cut
760		1651
761	# rough implementation of a future "reply" method that works	1652	# rough implementation of a future "reply" method that works
762	# with dialog boxes.	1653	# with dialog boxes.
		1654	#TODO: the first argument must go, split into a $npc->reply_to ( method
763	sub cf::object::player::reply($$$;$) {	1655	sub cf::object::player::reply($$$;$) {
764	my ($self, $npc, $msg, $flags) = @_;	1656	my ($self, $npc, $msg, $flags) = @_;
765		1657
766	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1658	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
767		1659
…		…
771	$msg = $npc->name . " says: $msg" if $npc;	1663	$msg = $npc->name . " says: $msg" if $npc;
772	$self->message ($msg, $flags);	1664	$self->message ($msg, $flags);
773	}	1665	}
774	}	1666	}
775		1667
776	=item $player->ext_reply ($msgid, $msgtype, %msg)	1668	=item $player_object->may ("access")
777		1669
778	Sends an ext reply to the player.	1670	Returns wether the given player is authorized to access resource "access"
		1671	(e.g. "command_wizcast").
779		1672
780	=cut	1673	=cut
781		1674
782	sub cf::player::ext_reply($$$%) {	1675	sub cf::object::player::may {
		1676	my ($self, $access) = @_;
		1677
		1678	$self->flag (cf::FLAG_WIZ) ||
		1679	(ref $cf::CFG{"may_$access"}
		1680	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1681	: $cf::CFG{"may_$access"})
		1682	}
		1683
		1684	=item $player_object->enter_link
		1685
		1686	Freezes the player and moves him/her to a special map (C<{link}>).
		1687
		1688	The player should be reasonably safe there for short amounts of time. You
		1689	I<MUST> call C<leave_link> as soon as possible, though.
		1690
		1691	Will never block.
		1692
		1693	=item $player_object->leave_link ($map, $x, $y)
		1694
		1695	Moves the player out of the special C<{link}> map onto the specified
		1696	map. If the map is not valid (or omitted), the player will be moved back
		1697	to the location he/she was before the call to C<enter_link>, or, if that
		1698	fails, to the emergency map position.
		1699
		1700	Might block.
		1701
		1702	=cut
		1703
		1704	sub link_map {
		1705	unless ($LINK_MAP) {
		1706	$LINK_MAP = cf::map::find "{link}"
		1707	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1708	$LINK_MAP->load;
		1709	}
		1710
		1711	$LINK_MAP
		1712	}
		1713
		1714	sub cf::object::player::enter_link {
		1715	my ($self) = @_;
		1716
		1717	$self->deactivate_recursive;
		1718
		1719	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1720
		1721	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1722	if $self->map;
		1723
		1724	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1725	}
		1726
		1727	sub cf::object::player::leave_link {
		1728	my ($self, $map, $x, $y) = @_;
		1729
		1730	my $link_pos = delete $self->{_link_pos};
		1731
		1732	unless ($map) {
		1733	# restore original map position
		1734	($map, $x, $y) = @{ $link_pos || [] };
		1735	$map = cf::map::find $map;
		1736
		1737	unless ($map) {
		1738	($map, $x, $y) = @$EMERGENCY_POSITION;
		1739	$map = cf::map::find $map
		1740	or die "FATAL: cannot load emergency map\n";
		1741	}
		1742	}
		1743
		1744	($x, $y) = (-1, -1)
		1745	unless (defined $x) && (defined $y);
		1746
		1747	# use -1 or undef as default coordinates, not 0, 0
		1748	($x, $y) = ($map->enter_x, $map->enter_y)
		1749	if $x <=0 && $y <= 0;
		1750
		1751	$map->load;
		1752	$map->load_diag;
		1753
		1754	return unless $self->contr->active;
		1755	$self->activate_recursive;
		1756	$self->enter_map ($map, $x, $y);
		1757	}
		1758
		1759	cf::player->attach (
		1760	on_logout => sub {
		1761	my ($pl) = @_;
		1762
		1763	# abort map switching before logout
		1764	if ($pl->ob->{_link_pos}) {
		1765	cf::sync_job {
		1766	$pl->ob->leave_link
		1767	};
		1768	}
		1769	},
		1770	on_login => sub {
		1771	my ($pl) = @_;
		1772
		1773	# try to abort aborted map switching on player login :)
		1774	# should happen only on crashes
		1775	if ($pl->ob->{_link_pos}) {
		1776	$pl->ob->enter_link;
		1777	(async {
		1778	# we need this sleep as the login has a concurrent enter_exit running
		1779	# and this sleep increases chances of the player not ending up in scorn
		1780	$pl->ob->reply (undef,
		1781	"There was an internal problem at your last logout, "
		1782	. "the server will try to bring you to your intended destination in a second.",
		1783	cf::NDI_RED);
		1784	Coro::Timer::sleep 1;
		1785	$pl->ob->leave_link;
		1786	})->prio (2);
		1787	}
		1788	},
		1789	);
		1790
		1791	=item $player_object->goto ($path, $x, $y)
		1792
		1793	=cut
		1794
		1795	sub cf::object::player::goto {
		1796	my ($self, $path, $x, $y) = @_;
		1797
		1798	$self->enter_link;
		1799
		1800	(async {
		1801	my $map = cf::map::find $path;
		1802	$map = $map->customise_for ($self) if $map;
		1803
		1804	# warn "entering ", $map->path, " at ($x, $y)\n"
		1805	# if $map;
		1806
		1807	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1808
		1809	$self->leave_link ($map, $x, $y);
		1810	})->prio (1);
		1811	}
		1812
		1813	=item $player_object->enter_exit ($exit_object)
		1814
		1815	=cut
		1816
		1817	sub parse_random_map_params {
		1818	my ($spec) = @_;
		1819
		1820	my $rmp = { # defaults
		1821	xsize => (cf::rndm 15, 40),
		1822	ysize => (cf::rndm 15, 40),
		1823	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1824	#layout => string,
		1825	};
		1826
		1827	for (split /\n/, $spec) {
		1828	my ($k, $v) = split /\s+/, $_, 2;
		1829
		1830	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1831	}
		1832
		1833	$rmp
		1834	}
		1835
		1836	sub prepare_random_map {
		1837	my ($exit) = @_;
		1838
		1839	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1840
		1841	# all this does is basically replace the /! path by
		1842	# a new random map path (?random/...) with a seed
		1843	# that depends on the exit object
		1844
		1845	my $rmp = parse_random_map_params $exit->msg;
		1846
		1847	if ($exit->map) {
		1848	$rmp->{region} = $exit->map->region_name;
		1849	$rmp->{origin_map} = $exit->map->path;
		1850	$rmp->{origin_x} = $exit->x;
		1851	$rmp->{origin_y} = $exit->y;
		1852	}
		1853
		1854	$rmp->{random_seed} ||= $exit->random_seed;
		1855
		1856	my $data = cf::to_json $rmp;
		1857	my $md5 = Digest::MD5::md5_hex $data;
		1858	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1859
		1860	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1861	aio_write $fh, 0, (length $data), $data, 0;
		1862	undef $fh;
		1863	aio_rename "$meta~", $meta;
		1864
		1865	$exit->slaying ("?random/$md5");
		1866	$exit->msg (undef);
		1867	}
		1868	}
		1869
		1870	sub cf::object::player::enter_exit {
783	my ($self, $id, %msg) = @_;	1871	my ($self, $exit) = @_;
784		1872
785	$msg{msgid} = $id;	1873	return unless $self->type == cf::PLAYER;
786		1874
787	$self->send ("ext " . to_json \%msg);	1875	$self->enter_link;
788	}
789		1876
790	#############################################################################	1877	(async {
791	# map scripting support	1878	$self->deactivate_recursive; # just to be sure
		1879	unless (eval {
		1880	prepare_random_map $exit
		1881	if $exit->slaying eq "/!";
		1882
		1883	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1884	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1885
		1886	1;
		1887	}) {
		1888	$self->message ("Something went wrong deep within the crossfire server. "
		1889	. "I'll try to bring you back to the map you were before. "
		1890	. "Please report this to the dungeon master!",
		1891	cf::NDI_UNIQUE | cf::NDI_RED);
		1892
		1893	warn "ERROR in enter_exit: $@";
		1894	$self->leave_link;
		1895	}
		1896	})->prio (1);
		1897	}
		1898
		1899	=head3 cf::client
		1900
		1901	=over 4
		1902
		1903	=item $client->send_drawinfo ($text, $flags)
		1904
		1905	Sends a drawinfo packet to the client. Circumvents output buffering so
		1906	should not be used under normal circumstances.
		1907
		1908	=cut
		1909
		1910	sub cf::client::send_drawinfo {
		1911	my ($self, $text, $flags) = @_;
		1912
		1913	utf8::encode $text;
		1914	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1915	}
		1916
		1917
		1918	=item $success = $client->query ($flags, "text", \&cb)
		1919
		1920	Queues a query to the client, calling the given callback with
		1921	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1922	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1923
		1924	Queries can fail, so check the return code. Or don't, as queries will become
		1925	reliable at some point in the future.
		1926
		1927	=cut
		1928
		1929	sub cf::client::query {
		1930	my ($self, $flags, $text, $cb) = @_;
		1931
		1932	return unless $self->state == ST_PLAYING
		1933	|| $self->state == ST_SETUP
		1934	|| $self->state == ST_CUSTOM;
		1935
		1936	$self->state (ST_CUSTOM);
		1937
		1938	utf8::encode $text;
		1939	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1940
		1941	$self->send_packet ($self->{query_queue}[0][0])
		1942	if @{ $self->{query_queue} } == 1;
		1943	}
		1944
		1945	cf::client->attach (
		1946	on_reply => sub {
		1947	my ($ns, $msg) = @_;
		1948
		1949	# this weird shuffling is so that direct followup queries
		1950	# get handled first
		1951	my $queue = delete $ns->{query_queue}
		1952	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1953
		1954	(shift @$queue)->[1]->($msg);
		1955
		1956	push @{ $ns->{query_queue} }, @$queue;
		1957
		1958	if (@{ $ns->{query_queue} } == @$queue) {
		1959	if (@$queue) {
		1960	$ns->send_packet ($ns->{query_queue}[0][0]);
		1961	} else {
		1962	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1963	}
		1964	}
		1965	},
		1966	);
		1967
		1968	=item $client->async (\&cb)
		1969
		1970	Create a new coroutine, running the specified callback. The coroutine will
		1971	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1972	or loss of connection).
		1973
		1974	=cut
		1975
		1976	sub cf::client::async {
		1977	my ($self, $cb) = @_;
		1978
		1979	my $coro = &Coro::async ($cb);
		1980
		1981	$coro->on_destroy (sub {
		1982	delete $self->{_coro}{$coro+0};
		1983	});
		1984
		1985	$self->{_coro}{$coro+0} = $coro;
		1986
		1987	$coro
		1988	}
		1989
		1990	cf::client->attach (
		1991	on_destroy => sub {
		1992	my ($ns) = @_;
		1993
		1994	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1995	},
		1996	);
		1997
		1998	=back
		1999
		2000
		2001	=head2 SAFE SCRIPTING
		2002
		2003	Functions that provide a safe environment to compile and execute
		2004	snippets of perl code without them endangering the safety of the server
		2005	itself. Looping constructs, I/O operators and other built-in functionality
		2006	is not available in the safe scripting environment, and the number of
		2007	functions and methods that can be called is greatly reduced.
		2008
		2009	=cut
792		2010
793	our $safe = new Safe "safe";	2011	our $safe = new Safe "safe";
794	our $safe_hole = new Safe::Hole;	2012	our $safe_hole = new Safe::Hole;
795		2013
796	$SIG{FPE} = 'IGNORE';	2014	$SIG{FPE} = 'IGNORE';
797		2015
798	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2016	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
799		2017
800	# here we export the classes and methods available to script code	2018	# here we export the classes and methods available to script code
801		2019
		2020	=pod
		2021
		2022	The following fucntions and emthods are available within a safe environment:
		2023
		2024	cf::object contr pay_amount pay_player map
		2025	cf::object::player player
		2026	cf::player peaceful
		2027	cf::map trigger
		2028
		2029	=cut
		2030
802	for (	2031	for (
803	["cf::object" => qw(contr pay_amount pay_player)],	2032	["cf::object" => qw(contr pay_amount pay_player map)],
804	["cf::object::player" => qw(player)],	2033	["cf::object::player" => qw(player)],
805	["cf::player" => qw(peaceful)],	2034	["cf::player" => qw(peaceful)],
		2035	["cf::map" => qw(trigger)],
806	) {	2036	) {
807	no strict 'refs';	2037	no strict 'refs';
808	my ($pkg, @funs) = @$_;	2038	my ($pkg, @funs) = @$_;
809	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2039	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
810	for @funs;	2040	for @funs;
811	}	2041	}
		2042
		2043	=over 4
		2044
		2045	=item @retval = safe_eval $code, [var => value, ...]
		2046
		2047	Compiled and executes the given perl code snippet. additional var/value
		2048	pairs result in temporary local (my) scalar variables of the given name
		2049	that are available in the code snippet. Example:
		2050
		2051	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2052
		2053	=cut
812		2054
813	sub safe_eval($;@) {	2055	sub safe_eval($;@) {
814	my ($code, %vars) = @_;	2056	my ($code, %vars) = @_;
815		2057
816	my $qcode = $code;	2058	my $qcode = $code;
…		…
839	}	2081	}
840		2082
841	wantarray ? @res : $res[0]	2083	wantarray ? @res : $res[0]
842	}	2084	}
843		2085
		2086	=item cf::register_script_function $function => $cb
		2087
		2088	Register a function that can be called from within map/npc scripts. The
		2089	function should be reasonably secure and should be put into a package name
		2090	like the extension.
		2091
		2092	Example: register a function that gets called whenever a map script calls
		2093	C<rent::overview>, as used by the C<rent> extension.
		2094
		2095	cf::register_script_function "rent::overview" => sub {
		2096	...
		2097	};
		2098
		2099	=cut
		2100
844	sub register_script_function {	2101	sub register_script_function {
845	my ($fun, $cb) = @_;	2102	my ($fun, $cb) = @_;
846		2103
847	no strict 'refs';	2104	no strict 'refs';
848	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2105	*{"safe::$fun"} = $safe_hole->wrap ($cb);
849	}	2106	}
850		2107
		2108	=back
		2109
		2110	=cut
		2111
		2112	#############################################################################
		2113
		2114	=head2 EXTENSION DATABASE SUPPORT
		2115
		2116	Crossfire maintains a very simple database for extension use. It can
		2117	currently store anything that can be serialised using Storable, which
		2118	excludes objects.
		2119
		2120	The parameter C<$family> should best start with the name of the extension
		2121	using it, it should be unique.
		2122
		2123	=over 4
		2124
		2125	=item $hashref = cf::db_get $family
		2126
		2127	Return a hashref for use by the extension C<$family>, which can be
		2128	modified. After modifications, you have to call C<cf::db_dirty> or
		2129	C<cf::db_sync>.
		2130
		2131	=item $value = cf::db_get $family => $key
		2132
		2133	Returns a single value from the database
		2134
		2135	=item cf::db_put $family => $hashref
		2136
		2137	Stores the given family hashref into the database. Updates are delayed, if
		2138	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2139
		2140	=item cf::db_put $family => $key => $value
		2141
		2142	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2143	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2144
		2145	=item cf::db_dirty
		2146
		2147	Marks the database as dirty, to be updated at a later time.
		2148
		2149	=item cf::db_sync
		2150
		2151	Immediately write the database to disk I<if it is dirty>.
		2152
		2153	=cut
		2154
		2155	our $DB;
		2156
		2157	{
		2158	my $path = cf::localdir . "/database.pst";
		2159
		2160	sub db_load() {
		2161	$DB = stat $path ? Storable::retrieve $path : { };
		2162	}
		2163
		2164	my $pid;
		2165
		2166	sub db_save() {
		2167	waitpid $pid, 0 if $pid;
		2168	if (0 == ($pid = fork)) {
		2169	$DB->{_meta}{version} = 1;
		2170	Storable::nstore $DB, "$path~";
		2171	rename "$path~", $path;
		2172	cf::_exit 0 if defined $pid;
		2173	}
		2174	}
		2175
		2176	my $dirty;
		2177
		2178	sub db_sync() {
		2179	db_save if $dirty;
		2180	undef $dirty;
		2181	}
		2182
		2183	my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2184	db_sync;
		2185	});
		2186
		2187	sub db_dirty() {
		2188	$dirty = 1;
		2189	$idle->start;
		2190	}
		2191
		2192	sub db_get($;$) {
		2193	@_ >= 2
		2194	? $DB->{$_[0]}{$_[1]}
		2195	: ($DB->{$_[0]} ||= { })
		2196	}
		2197
		2198	sub db_put($$;$) {
		2199	if (@_ >= 3) {
		2200	$DB->{$_[0]}{$_[1]} = $_[2];
		2201	} else {
		2202	$DB->{$_[0]} = $_[1];
		2203	}
		2204	db_dirty;
		2205	}
		2206
		2207	cf::global->attach (
		2208	prio => 10000,
		2209	on_cleanup => sub {
		2210	db_sync;
		2211	},
		2212	);
		2213	}
		2214
851	#############################################################################	2215	#############################################################################
852	# the server's main()	2216	# the server's main()
853		2217
		2218	sub cfg_load {
		2219	open my $fh, "<:utf8", cf::confdir . "/config"
		2220	or return;
		2221
		2222	local $/;
		2223	*CFG = YAML::Syck::Load <$fh>;
		2224
		2225	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2226
		2227	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2228	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2229
		2230	if (exists $CFG{mlockall}) {
		2231	eval {
		2232	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2233	and die "WARNING: m(un)lockall failed: $!\n";
		2234	};
		2235	warn $@ if $@;
		2236	}
		2237	}
		2238
854	sub main {	2239	sub main {
		2240	# we must not ever block the main coroutine
		2241	local $Coro::idle = sub {
		2242	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2243	(async {
		2244	Event::one_event;
		2245	})->prio (Coro::PRIO_MAX);
		2246	};
		2247
		2248	cfg_load;
		2249	db_load;
		2250	load_extensions;
		2251
		2252	$TICK_WATCHER->start;
855	Event::loop;	2253	Event::loop;
856	}	2254	}
857		2255
858	#############################################################################	2256	#############################################################################
859	# initialisation	2257	# initialisation and cleanup
860		2258
861	register "<global>", __PACKAGE__;	2259	# install some emergency cleanup handlers
		2260	BEGIN {
		2261	for my $signal (qw(INT HUP TERM)) {
		2262	Event->signal (
		2263	data => WF_AUTOCANCEL,
		2264	signal => $signal,
		2265	cb => sub {
		2266	cf::cleanup "SIG$signal";
		2267	},
		2268	);
		2269	}
		2270	}
		2271
		2272	sub emergency_save() {
		2273	my $freeze_guard = cf::freeze_mainloop;
		2274
		2275	warn "enter emergency perl save\n";
		2276
		2277	cf::sync_job {
		2278	# use a peculiar iteration method to avoid tripping on perl
		2279	# refcount bugs in for. also avoids problems with players
		2280	# and maps saved/destroyed asynchronously.
		2281	warn "begin emergency player save\n";
		2282	for my $login (keys %cf::PLAYER) {
		2283	my $pl = $cf::PLAYER{$login} or next;
		2284	$pl->valid or next;
		2285	$pl->save;
		2286	}
		2287	warn "end emergency player save\n";
		2288
		2289	warn "begin emergency map save\n";
		2290	for my $path (keys %cf::MAP) {
		2291	my $map = $cf::MAP{$path} or next;
		2292	$map->valid or next;
		2293	$map->save;
		2294	}
		2295	warn "end emergency map save\n";
		2296	};
		2297
		2298	warn "leave emergency perl save\n";
		2299	}
		2300
		2301	sub reload() {
		2302	# can/must only be called in main
		2303	if ($Coro::current != $Coro::main) {
		2304	warn "can only reload from main coroutine";
		2305	return;
		2306	}
		2307
		2308	warn "reloading...";
		2309
		2310	warn "cancelling server ticker";
		2311	$TICK_WATCHER->cancel;
		2312
		2313	cf::emergency_save;
		2314
		2315	eval {
		2316	# if anything goes wrong in here, we should simply crash as we already saved
		2317
		2318	warn "syncing database to disk";
		2319	cf::db_sync;
		2320
		2321	warn "cancelling all WF_AUTOCANCEL watchers";
		2322	for (Event::all_watchers) {
		2323	$_->cancel if $_->data & WF_AUTOCANCEL;
		2324	}
		2325
		2326	warn "flushing outstanding aio requests";
		2327	for (;;) {
		2328	IO::AIO::flush;
		2329	Coro::cede;
		2330	last unless IO::AIO::nreqs;
		2331	warn "iterate...";
		2332	}
		2333
		2334	warn "cancelling all extension coros";
		2335	$_->cancel for values %EXT_CORO;
		2336	%EXT_CORO = ();
		2337
		2338	warn "removing commands";
		2339	%COMMAND = ();
		2340
		2341	warn "removing ext commands";
		2342	%EXTCMD = ();
		2343
		2344	warn "unloading/nuking all extensions";
		2345	for my $pkg (@EXTS) {
		2346	warn "... unloading $pkg";
		2347
		2348	if (my $cb = $pkg->can ("unload")) {
		2349	eval {
		2350	$cb->($pkg);
		2351	1
		2352	} or warn "$pkg unloaded, but with errors: $@";
		2353	}
		2354
		2355	warn "... nuking $pkg";
		2356	Symbol::delete_package $pkg;
		2357	}
		2358
		2359	warn "unloading all perl modules loaded from $LIBDIR";
		2360	while (my ($k, $v) = each %INC) {
		2361	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2362
		2363	warn "... unloading $k";
		2364	delete $INC{$k};
		2365
		2366	$k =~ s/\.pm$//;
		2367	$k =~ s/\//::/g;
		2368
		2369	if (my $cb = $k->can ("unload_module")) {
		2370	$cb->();
		2371	}
		2372
		2373	Symbol::delete_package $k;
		2374	}
		2375
		2376	warn "getting rid of safe::, as good as possible";
		2377	Symbol::delete_package "safe::$_"
		2378	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2379
		2380	warn "unloading cf.pm \"a bit\"";
		2381	delete $INC{"cf.pm"};
		2382
		2383	# don't, removes xs symbols, too,
		2384	# and global variables created in xs
		2385	#Symbol::delete_package __PACKAGE__;
		2386
		2387	warn "unload completed, starting to reload now";
		2388
		2389	warn "reloading cf.pm";
		2390	require cf;
		2391	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2392
		2393	warn "loading config and database again";
		2394	cf::cfg_load;
		2395	cf::db_load;
		2396
		2397	warn "loading extensions";
		2398	cf::load_extensions;
		2399
		2400	warn "reattaching attachments to objects/players";
		2401	_global_reattach;
		2402	warn "reattaching attachments to maps";
		2403	reattach $_ for values %MAP;
		2404
		2405	warn "restarting server ticker";
		2406
		2407	$TICK_WATCHER->start;
		2408	};
		2409
		2410	if ($@) {
		2411	warn $@;
		2412	warn "error while reloading, exiting.";
		2413	exit 1;
		2414	}
		2415
		2416	warn "reloaded";
		2417	};
		2418
		2419	our $RELOAD_WATCHER; # used only during reload
		2420
		2421	register_command "reload" => sub {
		2422	my ($who, $arg) = @_;
		2423
		2424	if ($who->flag (FLAG_WIZ)) {
		2425	$who->message ("reloading server.");
		2426
		2427	# doing reload synchronously and two reloads happen back-to-back,
		2428	# coro crashes during coro_state_free->destroy here.
		2429
		2430	$RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
		2431	reload;
		2432	undef $RELOAD_WATCHER;
		2433	});
		2434	}
		2435	};
862		2436
863	unshift @INC, $LIBDIR;	2437	unshift @INC, $LIBDIR;
864		2438
865	load_extensions;	2439	my $bug_warning = 0;
866		2440
867	$TICK_WATCHER = Event->timer (	2441	$TICK_WATCHER = Event->timer (
		2442	reentrant => 0,
		2443	parked => 1,
868	prio => 1,	2444	prio => 0,
869	at => $NEXT_TICK || 1,	2445	at => $NEXT_TICK || $TICK,
		2446	data => WF_AUTOCANCEL,
870	cb => sub {	2447	cb => sub {
		2448	if ($Coro::current != $Coro::main) {
		2449	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2450	unless ++$bug_warning > 10;
		2451	return;
		2452	}
		2453
		2454	$NOW = Event::time;
		2455
871	cf::server_tick; # one server iteration	2456	cf::server_tick; # one server iteration
872		2457	$RUNTIME += $TICK;
873	my $NOW = Event::time;
874	$NEXT_TICK += $TICK;	2458	$NEXT_TICK += $TICK;
875		2459
		2460	$WAIT_FOR_TICK->broadcast;
		2461	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2462
876	# if we are delayed by four ticks, skip them all	2463	# if we are delayed by four ticks or more, skip them all
877	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2464	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
878		2465
879	$TICK_WATCHER->at ($NEXT_TICK);	2466	$TICK_WATCHER->at ($NEXT_TICK);
880	$TICK_WATCHER->start;	2467	$TICK_WATCHER->start;
881	},	2468	},
882	);	2469	);
883		2470
884	_reload_2;	2471	IO::AIO::max_poll_time $TICK * 0.2;
		2472
		2473	$AIO_POLL_WATCHER = Event->io (
		2474	fd => IO::AIO::poll_fileno,
		2475	poll => 'r',
		2476	prio => 5,
		2477	data => WF_AUTOCANCEL,
		2478	cb => \&IO::AIO::poll_cb,
		2479	);
		2480
		2481	$WRITE_RUNTIME_WATCHER = Event->timer (
		2482	data => WF_AUTOCANCEL,
		2483	after => 1,
		2484	interval => 10,
		2485	prio => 6, # keep it lowest so it acts like a watchdog
		2486	cb => Coro::unblock_sub {
		2487	write_runtime
		2488	or warn "ERROR: unable to write runtime file: $!";
		2489	},
		2490	);
		2491
		2492	END { cf::emergency_save }
885		2493
886	1	2494	1
887		2495

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