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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 1.177 by root, Sun Jan 14 22:54:18 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 + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
		355	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		356	and return;
		357
		358	aio_fsync $fh
		359	and return;
		360
		361	close $fh
		362	or return;
		363
		364	aio_rename "$runtime~", $runtime
		365	and return;
		366
		367	1
		368	}
		369
		370	=back
		371
		372	=cut
		373
107	#############################################################################	374	#############################################################################
108	# "new" plug-in system
109		375
110	=item $object->attach ($attachment, key => $value...)	376	=head2 ATTACHABLE OBJECTS
111		377
112	=item $object->detach ($attachment)	378	Many objects in crossfire are so-called attachable objects. That means you can
		379	attach callbacks/event handlers (a collection of which is called an "attachment")
		380	to it. All such attachable objects support the following methods.
113		381
114	Attach/detach a pre-registered attachment to an object.	382	In the following description, CLASS can be any of C<global>, C<object>
		383	C<player>, C<client> or C<map> (i.e. the attachable objects in
		384	crossfire+).
115		385
116	=item $player->attach ($attachment, key => $value...)	386	=over 4
117		387
118	=item $player->detach ($attachment)
119
120	Attach/detach a pre-registered attachment to a player.
121
122	=item $map->attach ($attachment, key => $value...)	388	=item $attachable->attach ($attachment, key => $value...)
123		389
124	=item $map->detach ($attachment)	390	=item $attachable->detach ($attachment)
125		391
126	Attach/detach a pre-registered attachment to a map.	392	Attach/detach a pre-registered attachment to a specific object and give it
		393	the specified key/value pairs as arguments.
127		394
128	=item cf::attach_global ...	395	Example, attach a minesweeper attachment to the given object, making it a
		396	10x10 minesweeper game:
129		397
130	Attach handlers for global events.	398	$obj->attach (minesweeper => width => 10, height => 10);
131		399
132	This and all following C<attach_*>-functions expect any number of the	400	=item $bool = $attachable->attached ($name)
133	following handler/hook descriptions:	401
		402	Checks wether the named attachment is currently attached to the object.
		403
		404	=item cf::CLASS->attach ...
		405
		406	=item cf::CLASS->detach ...
		407
		408	Define an anonymous attachment and attach it to all objects of the given
		409	CLASS. See the next function for an explanation of its arguments.
		410
		411	You can attach to global events by using the C<cf::global> class.
		412
		413	Example, log all player logins:
		414
		415	cf::player->attach (
		416	on_login => sub {
		417	my ($pl) = @_;
		418	...
		419	},
		420	);
		421
		422	Example, attach to the jeweler skill:
		423
		424	cf::object->attach (
		425	type => cf::SKILL,
		426	subtype => cf::SK_JEWELER,
		427	on_use_skill => sub {
		428	my ($sk, $ob, $part, $dir, $msg) = @_;
		429	...
		430	},
		431	);
		432
		433	=item cf::CLASS::attachment $name, ...
		434
		435	Register an attachment by C<$name> through which attachable objects of the
		436	given CLASS can refer to this attachment.
		437
		438	Some classes such as crossfire maps and objects can specify attachments
		439	that are attached at load/instantiate time, thus the need for a name.
		440
		441	These calls expect any number of the following handler/hook descriptions:
134		442
135	=over 4	443	=over 4
136		444
137	=item prio => $number	445	=item prio => $number
138		446
…		…
140	by another C<prio> setting). Lower priority handlers get executed	448	by another C<prio> setting). Lower priority handlers get executed
141	earlier. The default priority is C<0>, and many built-in handlers are	449	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	450	registered at priority C<-1000>, so lower priorities should not be used
143	unless you know what you are doing.	451	unless you know what you are doing.
144		452
		453	=item type => $type
		454
		455	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		456	given type of objects only (the additional parameter C<subtype> can be
		457	used to further limit to the given subtype).
		458
145	=item on_I<event> => \&cb	459	=item on_I<event> => \&cb
146		460
147	Call the given code reference whenever the named event happens (event is	461	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	462	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	463	handlers are recognised generally depends on the type of object these
…		…
158	package and register them. Only handlers for eevents supported by the	472	package and register them. Only handlers for eevents supported by the
159	object/class are recognised.	473	object/class are recognised.
160		474
161	=back	475	=back
162		476
163	=item cf::attach_to_type $object_type, $subtype, ...	477	Example, define an attachment called "sockpuppet" that calls the given
		478	event handler when a monster attacks:
164		479
165	Attach handlers for a specific object type (e.g. TRANSPORT) and	480	cf::object::attachment sockpuppet =>
166	subtype. If C<$subtype> is zero or undef, matches all objects of the given	481	on_skill_attack => sub {
167	type.	482	my ($self, $victim) = @_;
		483	...
		484	}
		485	}
168		486
169	=item cf::attach_to_objects ...	487	=item $attachable->valid
170		488
171	Attach handlers to all objects. Do not use this except for debugging or	489	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	490	C-level object still exists. If you try to access an object that has no
173	the game.	491	valid C counterpart anymore you get an exception at runtime. This method
174		492	can be used to test for existence of the C object part without causing an
175	=item cf::attach_to_players ...	493	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		494
193	=cut	495	=cut
194		496
195	# the following variables are defined in .xs and must not be re-created	497	# the following variables are defined in .xs and must not be re-created
196	our @CB_GLOBAL = (); # registry for all global events	498	our @CB_GLOBAL = (); # registry for all global events
		499	our @CB_ATTACHABLE = (); # registry for all attachables
197	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	500	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
198	our @CB_PLAYER = ();	501	our @CB_PLAYER = ();
		502	our @CB_CLIENT = ();
199	our @CB_TYPE = (); # registry for type (cf-object class) based events	503	our @CB_TYPE = (); # registry for type (cf-object class) based events
200	our @CB_MAP = ();	504	our @CB_MAP = ();
201		505
202	my %attachment;	506	my %attachment;
203		507
		508	sub cf::attachable::thawer_merge {
		509	# simply override everything except _meta
		510	local $_[0]{_meta};
		511	%{$_[0]} = %{$_[1]};
		512	}
		513
204	sub _attach_cb($\%$$$) {	514	sub _attach_cb($$$$) {
205	my ($registry, $undo, $event, $prio, $cb) = @_;	515	my ($registry, $event, $prio, $cb) = @_;
206		516
207	use sort 'stable';	517	use sort 'stable';
208		518
209	$cb = [$prio, $cb];	519	$cb = [$prio, $cb];
210		520
211	@{$registry->[$event]} = sort	521	@{$registry->[$event]} = sort
212	{ $a->[0] cmp $b->[0] }	522	{ $a->[0] cmp $b->[0] }
213	@{$registry->[$event] || []}, $cb;	523	@{$registry->[$event] || []}, $cb;
214
215	push @{$undo->{cb}}, [$event, $cb];
216	}	524	}
		525
		526	# hack
		527	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
217		528
218	# attach handles attaching event callbacks	529	# attach handles attaching event callbacks
219	# the only thing the caller has to do is pass the correct	530	# the only thing the caller has to do is pass the correct
220	# registry (== where the callback attaches to).	531	# registry (== where the callback attaches to).
221	sub _attach(\@$@) {	532	sub _attach {
222	my ($registry, $klass, @arg) = @_;	533	my ($registry, $klass, @arg) = @_;
223		534
		535	my $object_type;
224	my $prio = 0;	536	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;	537	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		538
		539	#TODO: get rid of this hack
		540	if ($attachable_klass{$klass}) {
		541	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		542	}
232		543
233	while (@arg) {	544	while (@arg) {
234	my $type = shift @arg;	545	my $type = shift @arg;
235		546
236	if ($type eq "prio") {	547	if ($type eq "prio") {
237	$prio = shift @arg;	548	$prio = shift @arg;
238		549
		550	} elsif ($type eq "type") {
		551	$object_type = shift @arg;
		552	$registry = $CB_TYPE[$object_type] ||= [];
		553
		554	} elsif ($type eq "subtype") {
		555	defined $object_type or Carp::croak "subtype specified without type";
		556	my $object_subtype = shift @arg;
		557	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		558
239	} elsif ($type eq "package") {	559	} elsif ($type eq "package") {
240	my $pkg = shift @arg;	560	my $pkg = shift @arg;
241		561
242	while (my ($name, $id) = each %cb_id) {	562	while (my ($name, $id) = each %cb_id) {
243	if (my $cb = $pkg->can ($name)) {	563	if (my $cb = $pkg->can ($name)) {
244	_attach_cb $registry, %undo, $id, $prio, $cb;	564	_attach_cb $registry, $id, $prio, $cb;
245	}	565	}
246	}	566	}
247		567
248	} elsif (exists $cb_id{$type}) {	568	} elsif (exists $cb_id{$type}) {
249	_attach_cb $registry, %undo, $cb_id{$type}, $prio, shift @arg;	569	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
250		570
251	} elsif (ref $type) {	571	} elsif (ref $type) {
252	warn "attaching objects not supported, ignoring.\n";	572	warn "attaching objects not supported, ignoring.\n";
253		573
254	} else {	574	} else {
255	shift @arg;	575	shift @arg;
256	warn "attach argument '$type' not supported, ignoring.\n";	576	warn "attach argument '$type' not supported, ignoring.\n";
257	}	577	}
258	}	578	}
259
260	\%undo
261	}	579	}
262		580
263	sub _attach_attachment {	581	sub _object_attach {
264	my ($obj, $name, %arg) = @_;	582	my ($obj, $name, %arg) = @_;
265		583
266	my $res;	584	return if exists $obj->{_attachment}{$name};
267		585
268	if (my $attach = $attachment{$name}) {	586	if (my $attach = $attachment{$name}) {
269	my $registry = $obj->registry;	587	my $registry = $obj->registry;
270		588
271	for (@$attach) {	589	for (@$attach) {
272	my ($klass, @attach) = @$_;	590	my ($klass, @attach) = @$_;
273	$res = _attach @$registry, $klass, @attach;	591	_attach $registry, $klass, @attach;
274	}	592	}
275		593
276	$obj->{$name} = \%arg;	594	$obj->{$name} = \%arg;
277	} else {	595	} else {
278	warn "object uses attachment '$name' that is not available, postponing.\n";	596	warn "object uses attachment '$name' that is not available, postponing.\n";
279	}	597	}
280		598
281	$obj->{_attachment}{$name} = undef;	599	$obj->{_attachment}{$name} = undef;
282
283	$res->{attachment} = $name;
284	$res
285	}	600	}
286		601
287	*cf::object::attach =	602	sub cf::attachable::attach {
288	*cf::player::attach =	603	if (ref $_[0]) {
289	*cf::map::attach = sub {	604	_object_attach @_;
290	my ($obj, $name, %arg) = @_;	605	} else {
291		606	_attach shift->_attach_registry, @_;
292	_attach_attachment $obj, $name, %arg;	607	}
293	}	608	};
294		609
295	# all those should be optimised	610	# all those should be optimised
296	*cf::object::detach =	611	sub cf::attachable::detach {
297	*cf::player::detach =
298	*cf::map::detach = sub {
299	my ($obj, $name) = @_;	612	my ($obj, $name) = @_;
300		613
		614	if (ref $obj) {
301	delete $obj->{_attachment}{$name};	615	delete $obj->{_attachment}{$name};
302	reattach $obj;	616	reattach ($obj);
		617	} else {
		618	Carp::croak "cannot, currently, detach class attachments";
		619	}
303	};	620	};
304		621
305	sub attach_global {	622	sub cf::attachable::attached {
306	_attach @CB_GLOBAL, KLASS_GLOBAL, @_	623	my ($obj, $name) = @_;
307	}
308		624
309	sub attach_to_type {	625	exists $obj->{_attachment}{$name}
310	my $type = shift;
311	my $subtype = shift;
312
313	_attach @{$CB_TYPE[$type + $subtype * NUM_SUBTYPES]}, KLASS_OBJECT, @_
314	}	626	}
315		627
316	sub attach_to_objects {	628	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
317	_attach @CB_OBJECT, KLASS_OBJECT, @_	629	eval "#line " . __LINE__ . " 'cf.pm'
318	}	630	sub cf::\L$klass\E::_attach_registry {
		631	(\\\@CB_$klass, KLASS_$klass)
		632	}
319		633
320	sub attach_to_players {	634	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;	635	my \$name = shift;
330		636
331	$attachment{$name} = [[KLASS_OBJECT, @_]];
332	}
333
334	sub register_map_attachment {
335	my $name = shift;
336
337	$attachment{$name} = [[KLASS_MAP, @_]];	637	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		638	}
		639	";
		640	die if $@;
338	}	641	}
339		642
340	our $override;	643	our $override;
341	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?	644	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
342		645
…		…
356	for (@$callbacks) {	659	for (@$callbacks) {
357	eval { &{$_->[1]} };	660	eval { &{$_->[1]} };
358		661
359	if ($@) {	662	if ($@) {
360	warn "$@";	663	warn "$@";
361	warn "... while processing $EVENT[$event][0] event, skipping processing altogether.\n";	664	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
362	override;	665	override;
363	}	666	}
364		667
365	return 1 if $override;	668	return 1 if $override;
366	}	669	}
367		670
368	0	671	0
369	}	672	}
		673
		674	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		675
		676	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		677
		678	Generate an object-specific event with the given arguments.
		679
		680	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		681	removed in future versions), and there is no public API to access override
		682	results (if you must, access C<@cf::invoke_results> directly).
		683
		684	=back
		685
		686	=cut
370		687
371	#############################################################################	688	#############################################################################
372	# object support	689	# object support
373		690
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 {	691	sub reattach {
		692	# basically do the same as instantiate, without calling instantiate
388	my ($obj) = @_;	693	my ($obj) = @_;
		694
		695	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		696
389	my $registry = $obj->registry;	697	my $registry = $obj->registry;
390		698
391	@$registry = ();	699	@$registry = ();
392		700
393	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	701	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
394		702
395	for my $name (keys %{ $obj->{_attachment} || {} }) {	703	for my $name (keys %{ $obj->{_attachment} || {} }) {
396	if (my $attach = $attachment{$name}) {	704	if (my $attach = $attachment{$name}) {
397	for (@$attach) {	705	for (@$attach) {
398	my ($klass, @attach) = @$_;	706	my ($klass, @attach) = @$_;
399	_attach @$registry, $klass, @attach;	707	_attach $registry, $klass, @attach;
400	}	708	}
401	} else {	709	} else {
402	warn "object uses attachment '$name' that is not available, postponing.\n";	710	warn "object uses attachment '$name' that is not available, postponing.\n";
403	}	711	}
404	}	712	}
405	}	713	}
406		714
407	sub object_freezer_save {	715	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,	716	prio => -1000000,
		717	on_instantiate => sub {
		718	my ($obj, $data) = @_;
		719
		720	$data = from_json $data;
		721
		722	for (@$data) {
		723	my ($name, $args) = @$_;
		724
		725	$obj->attach ($name, %{$args || {} });
		726	}
		727	},
		728	on_reattach => \&reattach,
435	on_clone => sub {	729	on_clone => sub {
436	my ($src, $dst) = @_;	730	my ($src, $dst) = @_;
437		731
438	@{$dst->registry} = @{$src->registry};	732	@{$dst->registry} = @{$src->registry};
439		733
440	%$dst = %$src;	734	%$dst = %$src;
441		735
442	%{$dst->{_attachment}} = %{$src->{_attachment}}	736	%{$dst->{_attachment}} = %{$src->{_attachment}}
443	if exists $src->{_attachment};	737	if exists $src->{_attachment};
444	},	738	},
445	;	739	);
		740
		741	sub object_freezer_save {
		742	my ($filename, $rdata, $objs) = @_;
		743
		744	sync_job {
		745	if (length $$rdata) {
		746	warn sprintf "saving %s (%d,%d)\n",
		747	$filename, length $$rdata, scalar @$objs;
		748
		749	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		750	chmod SAVE_MODE, $fh;
		751	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		752	aio_fsync $fh;
		753	close $fh;
		754
		755	if (@$objs) {
		756	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		757	chmod SAVE_MODE, $fh;
		758	my $data = Storable::nfreeze { version => 1, objs => $objs };
		759	aio_write $fh, 0, (length $data), $data, 0;
		760	aio_fsync $fh;
		761	close $fh;
		762	aio_rename "$filename.pst~", "$filename.pst";
		763	}
		764	} else {
		765	aio_unlink "$filename.pst";
		766	}
		767
		768	aio_rename "$filename~", $filename;
		769	} else {
		770	warn "FATAL: $filename~: $!\n";
		771	}
		772	} else {
		773	aio_unlink $filename;
		774	aio_unlink "$filename.pst";
		775	}
		776	}
		777	}
		778
		779	sub object_freezer_as_string {
		780	my ($rdata, $objs) = @_;
		781
		782	use Data::Dumper;
		783
		784	$$rdata . Dumper $objs
		785	}
		786
		787	sub object_thawer_load {
		788	my ($filename) = @_;
		789
		790	my ($data, $av);
		791
		792	(aio_load $filename, $data) >= 0
		793	or return;
		794
		795	unless (aio_stat "$filename.pst") {
		796	(aio_load "$filename.pst", $av) >= 0
		797	or return;
		798	$av = eval { (Storable::thaw $av)->{objs} };
		799	}
		800
		801	warn sprintf "loading %s (%d)\n",
		802	$filename, length $data, scalar @{$av || []};#d#
		803	return ($data, $av);
		804	}
446		805
447	#############################################################################	806	#############################################################################
448	# old plug-in events	807	# command handling &c
449		808
450	sub inject_event {	809	=item cf::register_command $name => \&callback($ob,$args);
451	my $extension = shift;
452	my $event_code = shift;
453		810
454	my $cb = $hook[$event_code]{$extension}	811	Register a callback for execution when the client sends the user command
455	or return;	812	$name.
456		813
457	&$cb	814	=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, $params);
474	}
475
476	-1
477	}
478		815
479	sub register_command {	816	sub register_command {
480	my ($name, $time, $cb) = @_;	817	my ($name, $cb) = @_;
481		818
482	my $caller = caller;	819	my $caller = caller;
483	#warn "registering command '$name/$time' to '$caller'";	820	#warn "registering command '$name/$time' to '$caller'";
484		821
485	push @{ $command{$name} }, [$time, $cb, $caller];	822	push @{ $COMMAND{$name} }, [$caller, $cb];
486	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
487	}	823	}
		824
		825	=item cf::register_extcmd $name => \&callback($pl,$packet);
		826
		827	Register a callbackf ro execution when the client sends an extcmd packet.
		828
		829	If the callback returns something, it is sent back as if reply was being
		830	called.
		831
		832	=cut
488		833
489	sub register_extcmd {	834	sub register_extcmd {
490	my ($name, $cb) = @_;	835	my ($name, $cb) = @_;
491		836
492	my $caller = caller;	837	$EXTCMD{$name} = $cb;
493	#warn "registering extcmd '$name' to '$caller'";
494
495	$extcmd{$name} = [$cb, $caller];
496	}	838	}
497		839
498	sub register {	840	cf::player->attach (
499	my ($base, $pkg) = @_;	841	on_command => sub {
		842	my ($pl, $name, $params) = @_;
500		843
501	#TODO	844	my $cb = $COMMAND{$name}
502	}	845	or return;
		846
		847	for my $cmd (@$cb) {
		848	$cmd->[1]->($pl->ob, $params);
		849	}
		850
		851	cf::override;
		852	},
		853	on_extcmd => sub {
		854	my ($pl, $buf) = @_;
		855
		856	my $msg = eval { from_json $buf };
		857
		858	if (ref $msg) {
		859	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		860	if (my %reply = $cb->($pl, $msg)) {
		861	$pl->ext_reply ($msg->{msgid}, %reply);
		862	}
		863	}
		864	} else {
		865	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		866	}
		867
		868	cf::override;
		869	},
		870	);
503		871
504	sub load_extension {	872	sub load_extension {
505	my ($path) = @_;	873	my ($path) = @_;
506		874
507	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	875	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
508	my $base = $1;	876	my $base = $1;
509	my $pkg = $1;	877	my $pkg = $1;
510	$pkg =~ s/[^[:word:]]/_/g;	878	$pkg =~ s/[^[:word:]]/_/g;
511	$pkg = "ext::$pkg";	879	$pkg = "ext::$pkg";
512		880
513	warn "loading '$path' into '$pkg'\n";	881	warn "... loading '$path' into '$pkg'\n";
514		882
515	open my $fh, "<:utf8", $path	883	open my $fh, "<:utf8", $path
516	or die "$path: $!";	884	or die "$path: $!";
517		885
518	my $source =	886	my $source =
519	"package $pkg; use strict; use utf8;\n"	887	"package $pkg; use strict; use utf8;\n"
520	. "#line 1 \"$path\"\n{\n"	888	. "#line 1 \"$path\"\n{\n"
521	. (do { local $/; <$fh> })	889	. (do { local $/; <$fh> })
522	. "\n};\n1";	890	. "\n};\n1";
523		891
524	eval $source	892	unless (eval $source) {
525	or die "$path: $@";	893	my $msg = $@ ? "$path: $@\n"
526		894	: "extension disabled.\n";
527	push @exts, $pkg;	895	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
528	$ext_pkg{$base} = $pkg;	896	warn $@;
529		897	warn "mandatory extension failed to load, exiting.\n";
530	# no strict 'refs';	898	exit 1;
531	# @{"$pkg\::ISA"} = ext::;	899	}
532		900	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	# }	901	}
546		902
547	# remove commands	903	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	}	904	}
574		905
575	sub load_extensions {	906	sub load_extensions {
576	my $LIBDIR = maps_directory "perl";
577
578	for my $ext (<$LIBDIR/*.ext>) {	907	for my $ext (<$LIBDIR/*.ext>) {
579	next unless -r $ext;	908	next unless -r $ext;
580	eval {	909	eval {
581	load_extension $ext;	910	load_extension $ext;
582	1	911	1
583	} or warn "$ext not loaded: $@";	912	} or warn "$ext not loaded: $@";
584	}	913	}
585	}	914	}
586		915
587	sub _perl_reload(&) {	916	#############################################################################
		917
		918	=head2 CORE EXTENSIONS
		919
		920	Functions and methods that extend core crossfire objects.
		921
		922	=cut
		923
		924	package cf::player;
		925
		926	use Coro::AIO;
		927
		928	=head3 cf::player
		929
		930	=over 4
		931
		932	=item cf::player::find $login
		933
		934	Returns the given player object, loading it if necessary (might block).
		935
		936	=cut
		937
		938	sub playerdir($) {
		939	cf::localdir
		940	. "/"
		941	. cf::playerdir
		942	. "/"
		943	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		944	}
		945
		946	sub path($) {
		947	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		948
		949	(playerdir $login) . "/$login.pl"
		950	}
		951
		952	sub find_active($) {
		953	$cf::PLAYER{$_[0]}
		954	and $cf::PLAYER{$_[0]}->active
		955	and $cf::PLAYER{$_[0]}
		956	}
		957
		958	sub exists($) {
588	my ($msg) = @_;	959	my ($login) = @_;
589		960
590	$msg->("reloading...");	961	$cf::PLAYER{$login}
		962	or cf::sync_job { !aio_stat $login }
		963	}
591		964
592	eval {	965	sub find($) {
593	# 1. cancel all watchers	966	return $cf::PLAYER{$_[0]} || do {
594	$_->cancel for Event::all_watchers;	967	my $login = $_[0];
595		968
596	# 2. unload all extensions	969	my $guard = cf::lock_acquire "user_find:$login";
597	for (@exts) {
598	$msg->("unloading <$_>");
599	unload_extension $_;
600	}
601		970
602	# 3. unload all modules loaded from $LIBDIR	971	$cf::PLAYER{$_[0]} || do {
603	while (my ($k, $v) = each %INC) {	972	my $pl = load_pl path $login
604	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	973	or return;
605		974	$cf::PLAYER{$login} = $pl
606	$msg->("removing <$k>");
607	delete $INC{$k};
608
609	$k =~ s/\.pm$//;
610	$k =~ s/\//::/g;
611
612	if (my $cb = $k->can ("unload_module")) {
613	$cb->();
614	}
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		975	}
626	# 6. unload cf.pm "a bit"	976	}
627	delete $INC{"cf.pm"};	977	}
628		978
629	# don't, removes xs symbols, too,	979	sub save($) {
630	# and global variables created in xs	980	my ($pl) = @_;
631	#Symbol::delete_package __PACKAGE__;
632		981
633	# 7. reload cf.pm	982	return if $pl->{deny_save};
634	$msg->("reloading cf.pm");	983
635	require cf;	984	my $path = path $pl;
		985	my $guard = cf::lock_acquire "user_save:$path";
		986
		987	return if $pl->{deny_save};
		988
		989	aio_mkdir playerdir $pl, 0770;
		990	$pl->{last_save} = $cf::RUNTIME;
		991
		992	$pl->save_pl ($path);
		993	Coro::cede;
		994	}
		995
		996	sub new($) {
		997	my ($login) = @_;
		998
		999	my $self = create;
		1000
		1001	$self->ob->name ($login);
		1002	$self->{deny_save} = 1;
		1003
		1004	$cf::PLAYER{$login} = $self;
		1005
		1006	$self
		1007	}
		1008
		1009	=item $pl->quit_character
		1010
		1011	Nukes the player without looking back. If logged in, the connection will
		1012	be destroyed. May block for a long time.
		1013
		1014	=cut
		1015
		1016	sub quit_character {
		1017	my ($pl) = @_;
		1018
		1019	$pl->{deny_save} = 1;
		1020	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1021
		1022	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1023	$pl->deactivate;
		1024	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1025	$pl->ns->destroy if $pl->ns;
		1026
		1027	my $path = playerdir $pl;
		1028	my $temp = "$path~$cf::RUNTIME~deleting~";
		1029	aio_rename $path, $temp;
		1030	delete $cf::PLAYER{$pl->ob->name};
		1031	$pl->destroy;
		1032	IO::AIO::aio_rmtree $temp;
		1033	}
		1034
		1035	=item cf::player::list_logins
		1036
		1037	Returns am arrayref of all valid playernames in the system, can take a
		1038	while and may block, so not sync_job-capable, ever.
		1039
		1040	=cut
		1041
		1042	sub list_logins {
		1043	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1044	or return [];
		1045
		1046	my @logins;
		1047
		1048	for my $login (@$dirs) {
		1049	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1050	aio_read $fh, 0, 512, my $buf, 0 or next;
		1051	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1052
		1053	utf8::decode $login;
		1054	push @logins, $login;
		1055	}
		1056
		1057	\@logins
		1058	}
		1059
		1060	=item $player->maps
		1061
		1062	Returns an arrayref of map paths that are private for this
		1063	player. May block.
		1064
		1065	=cut
		1066
		1067	sub maps($) {
		1068	my ($pl) = @_;
		1069
		1070	my $files = aio_readdir playerdir $pl
		1071	or return;
		1072
		1073	my @paths;
		1074
		1075	for (@$files) {
		1076	utf8::decode $_;
		1077	next if /\.(?:pl|pst)$/;
		1078	next unless /^$PATH_SEP/o;
		1079
		1080	s/\.map$//;
		1081	push @paths, "~" . $pl->ob->name . "/" . $_;
		1082	}
		1083
		1084	\@paths
		1085	}
		1086
		1087	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1088
		1089	Sends an ext reply to the player.
		1090
		1091	=cut
		1092
		1093	sub ext_reply($$$%) {
		1094	my ($self, $id, %msg) = @_;
		1095
		1096	$msg{msgid} = $id;
		1097
		1098	$self->send ("ext " . cf::to_json \%msg);
		1099	}
		1100
		1101	package cf;
		1102
		1103	=back
		1104
		1105
		1106	=head3 cf::map
		1107
		1108	=over 4
		1109
		1110	=cut
		1111
		1112	package cf::map;
		1113
		1114	use Fcntl;
		1115	use Coro::AIO;
		1116
		1117	use overload
		1118	'""' => \&as_string,
		1119	fallback => 1;
		1120
		1121	our $MAX_RESET = 3600;
		1122	our $DEFAULT_RESET = 3000;
		1123
		1124	sub generate_random_map {
		1125	my ($self, $rmp) = @_;
		1126
		1127	# mit "rum" bekleckern, nicht
		1128	$self->_create_random_map (
		1129	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1130	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1131	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1132	$rmp->{exit_on_final_map},
		1133	$rmp->{xsize}, $rmp->{ysize},
		1134	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1135	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1136	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1137	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1138	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1139	(cf::region::find $rmp->{region}), $rmp->{custom}
		1140	)
		1141	}
		1142
		1143	sub register {
		1144	my (undef, $regex) = @_;
		1145	my $pkg = caller;
		1146
		1147	no strict;
		1148	push @{"$pkg\::ISA"}, __PACKAGE__;
		1149
		1150	$EXT_MAP{$pkg} = qr<$regex>;
		1151	}
		1152
		1153	# also paths starting with '/'
		1154	$EXT_MAP{"cf::map"} = qr{^(?=/)};
		1155
		1156	sub thawer_merge {
		1157	my ($self, $merge) = @_;
		1158
		1159	# we have to keep some variables in memory intact
		1160	local $self->{path};
		1161	local $self->{load_path};
		1162	local $self->{deny_save};
		1163	local $self->{deny_reset};
		1164
		1165	$self->SUPER::thawer_merge ($merge);
		1166	}
		1167
		1168	sub normalise {
		1169	my ($path, $base) = @_;
		1170
		1171	# map plan:
		1172	#
		1173	# /! non-realised random map exit (special hack!)
		1174	# {... are special paths that are not being touched
		1175	# ?xxx/... are special absolute paths
		1176	# ?random/... random maps
		1177	# /... normal maps
		1178	# ~user/... per-player map of a specific user
		1179
		1180	$path =~ s/$PATH_SEP/\//go;
		1181
		1182	# treat it as relative path if it starts with
		1183	# something that looks reasonable
		1184	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1185	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1186
		1187	$base =~ s{[^/]+/?$}{};
		1188	$path = "$base/$path";
		1189	}
		1190
		1191	for ($path) {
		1192	redo if s{//}{/};
		1193	redo if s{/\.?/}{/};
		1194	redo if s{/[^/]+/\.\./}{/};
		1195	}
		1196
		1197	$path
		1198	}
		1199
		1200	sub new_from_path {
		1201	my (undef, $path, $base) = @_;
		1202
		1203	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1204
		1205	$path = normalise $path, $base;
		1206
		1207	for my $pkg (keys %EXT_MAP) {
		1208	if ($path =~ $EXT_MAP{$pkg}) {
		1209	my $self = bless cf::map::new, $pkg;
		1210	$self->{path} = $path; $self->path ($path);
		1211	$self->init; # pass $1 etc.
		1212	return $self;
		1213	}
		1214	}
		1215
		1216	Carp::carp "unable to resolve path '$path'.";
		1217	()
		1218	}
		1219
		1220	sub init {
		1221	my ($self) = @_;
		1222
		1223	$self
		1224	}
		1225
		1226	sub as_string {
		1227	my ($self) = @_;
		1228
		1229	"$self->{path}"
		1230	}
		1231
		1232	# the displayed name, this is a one way mapping
		1233	sub visible_name {
		1234	&as_string
		1235	}
		1236
		1237	# the original (read-only) location
		1238	sub load_path {
		1239	my ($self) = @_;
		1240
		1241	sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path}
		1242	}
		1243
		1244	# the temporary/swap location
		1245	sub save_path {
		1246	my ($self) = @_;
		1247
		1248	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1249	sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $path
		1250	}
		1251
		1252	# the unique path, undef == no special unique path
		1253	sub uniq_path {
		1254	my ($self) = @_;
		1255
		1256	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1257	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1258	}
		1259
		1260	# and all this just because we cannot iterate over
		1261	# all maps in C++...
		1262	sub change_all_map_light {
		1263	my ($change) = @_;
		1264
		1265	$_->change_map_light ($change)
		1266	for grep $_->outdoor, values %cf::MAP;
		1267	}
		1268
		1269	sub unlink_save {
		1270	my ($self) = @_;
		1271
		1272	utf8::encode (my $save = $self->save_path);
		1273	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1274	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1275	}
		1276
		1277	sub load_header_from($) {
		1278	my ($self, $path) = @_;
		1279
		1280	utf8::encode $path;
		1281	aio_open $path, O_RDONLY, 0
		1282	or return;
		1283
		1284	$self->_load_header ($path)
		1285	or return;
		1286
		1287	$self->{load_path} = $path;
		1288
		1289	1
		1290	}
		1291
		1292	sub load_orig {
		1293	my ($self) = @_;
		1294
		1295	$self->load_header_from ($self->load_path)
		1296	}
		1297
		1298	sub load_temp {
		1299	my ($self) = @_;
		1300
		1301	$self->load_header_from ($self->save_path)
		1302	}
		1303
		1304	sub load_header {
		1305	my ($self) = @_;
		1306
		1307	if ($self->load_temp) {
		1308	$self->last_access ((delete $self->{last_access})
		1309	|| $cf::RUNTIME); #d#
		1310	# safety
		1311	$self->{instantiate_time} = $cf::RUNTIME
		1312	if $self->{instantiate_time} > $cf::RUNTIME;
		1313	} else {
		1314	$self->load_orig
		1315	or return;
		1316
		1317	$self->{load_original} = 1;
		1318	$self->{instantiate_time} = $cf::RUNTIME;
		1319	$self->last_access ($cf::RUNTIME);
		1320	$self->instantiate;
		1321	}
		1322
		1323	1
		1324	}
		1325
		1326	sub find;
		1327	sub find {
		1328	my ($path, $origin) = @_;
		1329
		1330	$path = normalise $path, $origin && $origin->path;
		1331
		1332	cf::lock_wait "map_find:$path";
		1333
		1334	$cf::MAP{$path} || do {
		1335	my $guard = cf::lock_acquire "map_find:$path";
		1336	my $map = new_from_path cf::map $path
		1337	or return;
		1338
		1339	$map->{last_save} = $cf::RUNTIME;
		1340
		1341	$map->load_header
		1342	or return;
		1343
		1344	if ($map->should_reset) {
		1345	$cf::WAIT_FOR_TICK->wait;
		1346	$map->reset;
		1347	undef $guard;
		1348	$map = find $path
		1349	or return;
		1350	}
		1351
		1352	$cf::MAP{$path} = $map
		1353	}
		1354	}
		1355
		1356	sub load {
		1357	my ($self) = @_;
		1358
		1359	my $path = $self->{path};
		1360	my $guard = cf::lock_acquire "map_load:$path";
		1361
		1362	return if $self->in_memory != cf::MAP_SWAPPED;
		1363
		1364	$self->in_memory (cf::MAP_LOADING);
		1365
		1366	$self->alloc;
		1367	$self->_load_objects ($self->{load_path}, 1)
		1368	or return;
		1369
		1370	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1371	if delete $self->{load_original};
		1372
		1373	if (my $uniq = $self->uniq_path) {
		1374	utf8::encode $uniq;
		1375	if (aio_open $uniq, O_RDONLY, 0) {
		1376	$self->clear_unique_items;
		1377	$self->_load_objects ($uniq, 0);
		1378	}
		1379	}
		1380
		1381	Coro::cede;
		1382
		1383	# now do the right thing for maps
		1384	$self->link_multipart_objects;
		1385
		1386	unless ($self->{deny_activate}) {
		1387	$self->decay_objects;
		1388	$self->fix_auto_apply;
		1389	$self->update_buttons;
		1390	Coro::cede;
		1391	$self->set_darkness_map;
		1392	$self->difficulty ($self->estimate_difficulty)
		1393	unless $self->difficulty;
		1394	Coro::cede;
		1395	$self->activate;
		1396	}
		1397
		1398	$self->in_memory (cf::MAP_IN_MEMORY);
		1399	}
		1400
		1401	sub customise_for {
		1402	my ($self, $ob) = @_;
		1403
		1404	return find "~" . $ob->name . "/" . $self->{path}
		1405	if $self->per_player;
		1406
		1407	$self
		1408	}
		1409
		1410	# find and load all maps in the 3x3 area around a map
		1411	sub load_diag {
		1412	my ($map) = @_;
		1413
		1414	my @diag; # diagonal neighbours
		1415
		1416	for (0 .. 3) {
		1417	my $neigh = $map->tile_path ($_)
		1418	or next;
		1419	$neigh = find $neigh, $map
		1420	or next;
		1421	$neigh->load;
		1422
		1423	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1424	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1425	}
		1426
		1427	for (@diag) {
		1428	my $neigh = find @$_
		1429	or next;
		1430	$neigh->load;
		1431	}
		1432	}
		1433
		1434	sub find_sync {
		1435	my ($path, $origin) = @_;
		1436
		1437	cf::sync_job { find $path, $origin }
		1438	}
		1439
		1440	sub do_load_sync {
		1441	my ($map) = @_;
		1442
		1443	cf::sync_job { $map->load };
		1444	}
		1445
		1446	our %MAP_PREFETCH;
		1447	our $MAP_PREFETCHER = Coro::async {
		1448	while () {
		1449	for my $path (keys %MAP_PREFETCH) {
		1450	my $map = find $path
		1451	or next;
		1452	$map->load;
		1453
		1454	delete $MAP_PREFETCH{$path};
		1455	}
		1456	Coro::schedule;
		1457	}
		1458	};
		1459
		1460	sub find_async {
		1461	my ($path, $origin) = @_;
		1462
		1463	$path = normalise $path, $origin && $origin->{path};
		1464
		1465	if (my $map = $cf::MAP{$path}) {
		1466	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1467	}
		1468
		1469	$MAP_PREFETCH{$path} = 0;
		1470	$MAP_PREFETCHER->ready;
		1471
		1472	()
		1473	}
		1474
		1475	sub save {
		1476	my ($self) = @_;
		1477
		1478	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1479
		1480	$self->{last_save} = $cf::RUNTIME;
		1481
		1482	return unless $self->dirty;
		1483
		1484	my $save = $self->save_path; utf8::encode $save;
		1485	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1486
		1487	$self->{load_path} = $save;
		1488
		1489	return if $self->{deny_save};
		1490
		1491	local $self->{last_access} = $self->last_access;#d#
		1492
		1493	cf::async {
		1494	$_->contr->save for $self->players;
636	};	1495	};
637	$msg->($@) if $@;
638		1496
639	$msg->("reloaded");	1497	if ($uniq) {
640	};	1498	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
641		1499	$self->_save_objects ($uniq, cf::IO_UNIQUES);
642	sub perl_reload() {	1500	} else {
643	_perl_reload {	1501	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
644	warn $_[0];
645	print "$_[0]\n";
646	};	1502	}
647	}	1503	}
648		1504
649	register_command "perl-reload", 0, sub {	1505	sub swap_out {
650	my ($who, $arg) = @_;
651
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) = @_;	1506	my ($self) = @_;
667		1507
668	my $msg = eval { from_json $buf };	1508	# save first because save cedes
		1509	$self->save;
669		1510
670	if (ref $msg) {	1511	my $lock = cf::lock_acquire "map_data:" . $self->path;
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 {
677	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
678	}
679		1512
680	cf::override;	1513	return if $self->players;
		1514	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1515	return if $self->{deny_save};
		1516
		1517	$self->clear;
		1518	$self->in_memory (cf::MAP_SWAPPED);
		1519	}
		1520
		1521	sub reset_at {
		1522	my ($self) = @_;
		1523
		1524	# TODO: safety, remove and allow resettable per-player maps
		1525	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1526	return 1e99 if $self->{deny_reset};
		1527
		1528	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1529	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1530
		1531	$time + $to
		1532	}
		1533
		1534	sub should_reset {
		1535	my ($self) = @_;
		1536
		1537	$self->reset_at <= $cf::RUNTIME
		1538	}
		1539
		1540	sub reset {
		1541	my ($self) = @_;
		1542
		1543	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1544
		1545	return if $self->players;
		1546	return if $self->isa ("ext::map_per_player");#d#
		1547
		1548	warn "resetting map ", $self->path;#d#
		1549
		1550	delete $cf::MAP{$self->path};
		1551
		1552	$self->in_memory (cf::MAP_SWAPPED);
		1553	$self->clear;
		1554
		1555	$_->clear_links_to ($self) for values %cf::MAP;
		1556
		1557	$self->unlink_save;
		1558	$self->destroy;
		1559	}
		1560
		1561	my $nuke_counter = "aaaa";
		1562
		1563	sub nuke {
		1564	my ($self) = @_;
		1565
		1566	delete $cf::MAP{$self->path};
		1567
		1568	$self->unlink_save;
		1569
		1570	bless $self, "cf::map";
		1571	delete $self->{deny_reset};
		1572	$self->{deny_save} = 1;
		1573	$self->reset_timeout (1);
		1574	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1575
		1576	$cf::MAP{$self->path} = $self;
		1577
		1578	$self->reset; # polite request, might not happen
		1579	}
		1580
		1581	=item cf::map::unique_maps
		1582
		1583	Returns an arrayref of paths of all shared maps that have
		1584	instantiated unique items. May block.
		1585
		1586	=cut
		1587
		1588	sub unique_maps() {
		1589	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1590	or return;
		1591
		1592	my @paths;
		1593
		1594	for (@$files) {
		1595	utf8::decode $_;
		1596	next if /\.pst$/;
		1597	next unless /^$PATH_SEP/o;
		1598
		1599	s/\.map$//;
		1600	push @paths, $_;
681	},	1601	}
682	;
683		1602
684	#############################################################################	1603	\@paths
685	# load/save/clean perl data associated with a map
686
687	*cf::mapsupport::on_clean = sub {
688	my ($map) = @_;
689
690	my $path = $map->tmpname;
691	defined $path or return;
692
693	unlink "$path.pst";
694	};
695
696	# old style persistent data, TODO: remove #d#
697	*cf::mapsupport::on_swapin =
698	*cf::mapsupport::on_load = sub {
699	my ($map) = @_;
700
701	my $path = $map->tmpname;
702	$path = $map->path unless defined $path;
703
704	open my $fh, "<:raw", "$path.cfperl"
705	or return; # no perl data
706
707	my $data = Storable::thaw do { local $/; <$fh> };
708
709	$data->{version} <= 1
710	or return; # too new
711
712	$map->_set_obs ($data->{obs});
713	$map->invoke (EVENT_MAP_UPGRADE);
714	};
715
716	attach_to_maps prio => -10000, package => cf::mapsupport::;
717
718	#############################################################################
719	# load/save perl data associated with player->ob objects
720
721	sub all_objects(@) {
722	@_, map all_objects ($_->inv), @_
723	}	1604	}
724		1605
725	attach_to_players	1606	package cf;
726	on_load => sub {
727	my ($pl, $path) = @_;
728		1607
729	for my $o (all_objects $pl->ob) {	1608	=back
730	if (my $value = $o->get_ob_key_value ("_perl_data")) {
731	$o->set_ob_key_value ("_perl_data");
732		1609
733	%$o = %{ Storable::thaw pack "H*", $value };	1610	=head3 cf::object
734	}
735	}
736	},
737	;
738		1611
739	#############################################################################
740	# core extensions - in perl
741
742	=item cf::player::exists $login
743
744	Returns true when the given account exists.
745
746	=cut	1612	=cut
747		1613
748	sub cf::player::exists($) {	1614	package cf::object;
749	cf::player::find $_[0]
750	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
751	}
752		1615
		1616	=over 4
		1617
		1618	=item $ob->inv_recursive
		1619
		1620	Returns the inventory of the object _and_ their inventories, recursively.
		1621
		1622	=cut
		1623
		1624	sub inv_recursive_;
		1625	sub inv_recursive_ {
		1626	map { $_, inv_recursive_ $_->inv } @_
		1627	}
		1628
		1629	sub inv_recursive {
		1630	inv_recursive_ inv $_[0]
		1631	}
		1632
		1633	package cf;
		1634
		1635	=back
		1636
		1637	=head3 cf::object::player
		1638
		1639	=over 4
		1640
753	=item $player->reply ($npc, $msg[, $flags])	1641	=item $player_object->reply ($npc, $msg[, $flags])
754		1642
755	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1643	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	1644	can be C<undef>. Does the right thing when the player is currently in a
757	dialogue with the given NPC character.	1645	dialogue with the given NPC character.
758		1646
759	=cut	1647	=cut
760		1648
761	# rough implementation of a future "reply" method that works	1649	# rough implementation of a future "reply" method that works
762	# with dialog boxes.	1650	# with dialog boxes.
		1651	#TODO: the first argument must go, split into a $npc->reply_to ( method
763	sub cf::object::player::reply($$$;$) {	1652	sub cf::object::player::reply($$$;$) {
764	my ($self, $npc, $msg, $flags) = @_;	1653	my ($self, $npc, $msg, $flags) = @_;
765		1654
766	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1655	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
767		1656
…		…
771	$msg = $npc->name . " says: $msg" if $npc;	1660	$msg = $npc->name . " says: $msg" if $npc;
772	$self->message ($msg, $flags);	1661	$self->message ($msg, $flags);
773	}	1662	}
774	}	1663	}
775		1664
776	=item $player->ext_reply ($msgid, $msgtype, %msg)	1665	=item $player_object->may ("access")
777		1666
778	Sends an ext reply to the player.	1667	Returns wether the given player is authorized to access resource "access"
		1668	(e.g. "command_wizcast").
779		1669
780	=cut	1670	=cut
781		1671
782	sub cf::player::ext_reply($$$%) {	1672	sub cf::object::player::may {
		1673	my ($self, $access) = @_;
		1674
		1675	$self->flag (cf::FLAG_WIZ) ||
		1676	(ref $cf::CFG{"may_$access"}
		1677	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1678	: $cf::CFG{"may_$access"})
		1679	}
		1680
		1681	=item $player_object->enter_link
		1682
		1683	Freezes the player and moves him/her to a special map (C<{link}>).
		1684
		1685	The player should be reasonably safe there for short amounts of time. You
		1686	I<MUST> call C<leave_link> as soon as possible, though.
		1687
		1688	Will never block.
		1689
		1690	=item $player_object->leave_link ($map, $x, $y)
		1691
		1692	Moves the player out of the special C<{link}> map onto the specified
		1693	map. If the map is not valid (or omitted), the player will be moved back
		1694	to the location he/she was before the call to C<enter_link>, or, if that
		1695	fails, to the emergency map position.
		1696
		1697	Might block.
		1698
		1699	=cut
		1700
		1701	sub link_map {
		1702	unless ($LINK_MAP) {
		1703	$LINK_MAP = cf::map::find "{link}"
		1704	or do { warn "FATAL: unable to provide {link} map, exiting."; exit 1 };
		1705	$LINK_MAP->load;
		1706	}
		1707
		1708	$LINK_MAP
		1709	}
		1710
		1711	sub cf::object::player::enter_link {
		1712	my ($self) = @_;
		1713
		1714	$self->deactivate_recursive;
		1715
		1716	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1717
		1718	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1719	if $self->map;
		1720
		1721	$self->enter_map ($LINK_MAP || link_map, 20, 20);
		1722	}
		1723
		1724	sub cf::object::player::leave_link {
		1725	my ($self, $map, $x, $y) = @_;
		1726
		1727	my $link_pos = delete $self->{_link_pos};
		1728
		1729	unless ($map) {
		1730	# restore original map position
		1731	($map, $x, $y) = @{ $link_pos || [] };
		1732	$map = cf::map::find $map;
		1733
		1734	unless ($map) {
		1735	($map, $x, $y) = @$EMERGENCY_POSITION;
		1736	$map = cf::map::find $map
		1737	or die "FATAL: cannot load emergency map\n";
		1738	}
		1739	}
		1740
		1741	($x, $y) = (-1, -1)
		1742	unless (defined $x) && (defined $y);
		1743
		1744	# use -1 or undef as default coordinates, not 0, 0
		1745	($x, $y) = ($map->enter_x, $map->enter_y)
		1746	if $x <=0 && $y <= 0;
		1747
		1748	$map->load;
		1749	$map->load_diag;
		1750
		1751	return unless $self->contr->active;
		1752	$self->activate_recursive;
		1753	$self->enter_map ($map, $x, $y);
		1754	}
		1755
		1756	cf::player->attach (
		1757	on_logout => sub {
		1758	my ($pl) = @_;
		1759
		1760	# abort map switching before logout
		1761	if ($pl->ob->{_link_pos}) {
		1762	cf::sync_job {
		1763	$pl->ob->leave_link
		1764	};
		1765	}
		1766	},
		1767	on_login => sub {
		1768	my ($pl) = @_;
		1769
		1770	# try to abort aborted map switching on player login :)
		1771	# should happen only on crashes
		1772	if ($pl->ob->{_link_pos}) {
		1773	$pl->ob->enter_link;
		1774	(async {
		1775	# we need this sleep as the login has a concurrent enter_exit running
		1776	# and this sleep increases chances of the player not ending up in scorn
		1777	$pl->ob->reply (undef,
		1778	"There was an internal problem at your last logout, "
		1779	. "the server will try to bring you to your intended destination in a second.",
		1780	cf::NDI_RED);
		1781	Coro::Timer::sleep 1;
		1782	$pl->ob->leave_link;
		1783	})->prio (2);
		1784	}
		1785	},
		1786	);
		1787
		1788	=item $player_object->goto ($path, $x, $y)
		1789
		1790	=cut
		1791
		1792	sub cf::object::player::goto {
		1793	my ($self, $path, $x, $y) = @_;
		1794
		1795	$self->enter_link;
		1796
		1797	(async {
		1798	my $map = cf::map::find $path;
		1799	$map = $map->customise_for ($self) if $map;
		1800
		1801	# warn "entering ", $map->path, " at ($x, $y)\n"
		1802	# if $map;
		1803
		1804	$map or $self->message ("The exit to '" . ($path->visible_name) . "' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1805
		1806	$self->leave_link ($map, $x, $y);
		1807	})->prio (1);
		1808	}
		1809
		1810	=item $player_object->enter_exit ($exit_object)
		1811
		1812	=cut
		1813
		1814	sub parse_random_map_params {
		1815	my ($spec) = @_;
		1816
		1817	my $rmp = { # defaults
		1818	xsize => 10,
		1819	ysize => 10,
		1820	};
		1821
		1822	for (split /\n/, $spec) {
		1823	my ($k, $v) = split /\s+/, $_, 2;
		1824
		1825	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1826	}
		1827
		1828	$rmp
		1829	}
		1830
		1831	sub prepare_random_map {
		1832	my ($exit) = @_;
		1833
		1834	# all this does is basically replace the /! path by
		1835	# a new random map path (?random/...) with a seed
		1836	# that depends on the exit object
		1837
		1838	my $rmp = parse_random_map_params $exit->msg;
		1839
		1840	if ($exit->map) {
		1841	$rmp->{region} = $exit->map->region_name;
		1842	$rmp->{origin_map} = $exit->map->path;
		1843	$rmp->{origin_x} = $exit->x;
		1844	$rmp->{origin_y} = $exit->y;
		1845	}
		1846
		1847	$rmp->{random_seed} ||= $exit->random_seed;
		1848
		1849	my $data = cf::to_json $rmp;
		1850	my $md5 = Digest::MD5::md5_hex $data;
		1851	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1852
		1853	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1854	aio_write $fh, 0, (length $data), $data, 0;
		1855	undef $fh;
		1856	aio_rename "$meta~", $meta;
		1857
		1858	$exit->slaying ("?random/$md5");
		1859	$exit->msg (undef);
		1860	}
		1861	}
		1862
		1863	sub cf::object::player::enter_exit {
783	my ($self, $id, %msg) = @_;	1864	my ($self, $exit) = @_;
784		1865
785	$msg{msgid} = $id;	1866	return unless $self->type == cf::PLAYER;
786		1867
787	$self->send ("ext " . to_json \%msg);	1868	$self->enter_link;
788	}
789		1869
790	#############################################################################	1870	(async {
791	# map scripting support	1871	$self->deactivate_recursive; # just to be sure
		1872	unless (eval {
		1873	prepare_random_map $exit
		1874	if $exit->slaying eq "/!";
		1875
		1876	my $path = new_from_path cf::map $exit->slaying, $exit->map && $exit->map->path;
		1877	$self->goto ($path, $exit->stats->hp, $exit->stats->sp);
		1878
		1879	1;
		1880	}) {
		1881	$self->message ("Something went wrong deep within the crossfire server. "
		1882	. "I'll try to bring you back to the map you were before. "
		1883	. "Please report this to the dungeon master!",
		1884	cf::NDI_UNIQUE | cf::NDI_RED);
		1885
		1886	warn "ERROR in enter_exit: $@";
		1887	$self->leave_link;
		1888	}
		1889	})->prio (1);
		1890	}
		1891
		1892	=head3 cf::client
		1893
		1894	=over 4
		1895
		1896	=item $client->send_drawinfo ($text, $flags)
		1897
		1898	Sends a drawinfo packet to the client. Circumvents output buffering so
		1899	should not be used under normal circumstances.
		1900
		1901	=cut
		1902
		1903	sub cf::client::send_drawinfo {
		1904	my ($self, $text, $flags) = @_;
		1905
		1906	utf8::encode $text;
		1907	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1908	}
		1909
		1910
		1911	=item $success = $client->query ($flags, "text", \&cb)
		1912
		1913	Queues a query to the client, calling the given callback with
		1914	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1915	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1916
		1917	Queries can fail, so check the return code. Or don't, as queries will become
		1918	reliable at some point in the future.
		1919
		1920	=cut
		1921
		1922	sub cf::client::query {
		1923	my ($self, $flags, $text, $cb) = @_;
		1924
		1925	return unless $self->state == ST_PLAYING
		1926	|| $self->state == ST_SETUP
		1927	|| $self->state == ST_CUSTOM;
		1928
		1929	$self->state (ST_CUSTOM);
		1930
		1931	utf8::encode $text;
		1932	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		1933
		1934	$self->send_packet ($self->{query_queue}[0][0])
		1935	if @{ $self->{query_queue} } == 1;
		1936	}
		1937
		1938	cf::client->attach (
		1939	on_reply => sub {
		1940	my ($ns, $msg) = @_;
		1941
		1942	# this weird shuffling is so that direct followup queries
		1943	# get handled first
		1944	my $queue = delete $ns->{query_queue}
		1945	or return; # be conservative, not sure how that can happen, but we saw a crash here
		1946
		1947	(shift @$queue)->[1]->($msg);
		1948
		1949	push @{ $ns->{query_queue} }, @$queue;
		1950
		1951	if (@{ $ns->{query_queue} } == @$queue) {
		1952	if (@$queue) {
		1953	$ns->send_packet ($ns->{query_queue}[0][0]);
		1954	} else {
		1955	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		1956	}
		1957	}
		1958	},
		1959	);
		1960
		1961	=item $client->async (\&cb)
		1962
		1963	Create a new coroutine, running the specified callback. The coroutine will
		1964	be automatically cancelled when the client gets destroyed (e.g. on logout,
		1965	or loss of connection).
		1966
		1967	=cut
		1968
		1969	sub cf::client::async {
		1970	my ($self, $cb) = @_;
		1971
		1972	my $coro = &Coro::async ($cb);
		1973
		1974	$coro->on_destroy (sub {
		1975	delete $self->{_coro}{$coro+0};
		1976	});
		1977
		1978	$self->{_coro}{$coro+0} = $coro;
		1979
		1980	$coro
		1981	}
		1982
		1983	cf::client->attach (
		1984	on_destroy => sub {
		1985	my ($ns) = @_;
		1986
		1987	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		1988	},
		1989	);
		1990
		1991	=back
		1992
		1993
		1994	=head2 SAFE SCRIPTING
		1995
		1996	Functions that provide a safe environment to compile and execute
		1997	snippets of perl code without them endangering the safety of the server
		1998	itself. Looping constructs, I/O operators and other built-in functionality
		1999	is not available in the safe scripting environment, and the number of
		2000	functions and methods that can be called is greatly reduced.
		2001
		2002	=cut
792		2003
793	our $safe = new Safe "safe";	2004	our $safe = new Safe "safe";
794	our $safe_hole = new Safe::Hole;	2005	our $safe_hole = new Safe::Hole;
795		2006
796	$SIG{FPE} = 'IGNORE';	2007	$SIG{FPE} = 'IGNORE';
797		2008
798	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2009	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
799		2010
800	# here we export the classes and methods available to script code	2011	# here we export the classes and methods available to script code
801		2012
		2013	=pod
		2014
		2015	The following fucntions and emthods are available within a safe environment:
		2016
		2017	cf::object contr pay_amount pay_player map
		2018	cf::object::player player
		2019	cf::player peaceful
		2020	cf::map trigger
		2021
		2022	=cut
		2023
802	for (	2024	for (
803	["cf::object" => qw(contr pay_amount pay_player)],	2025	["cf::object" => qw(contr pay_amount pay_player map)],
804	["cf::object::player" => qw(player)],	2026	["cf::object::player" => qw(player)],
805	["cf::player" => qw(peaceful)],	2027	["cf::player" => qw(peaceful)],
		2028	["cf::map" => qw(trigger)],
806	) {	2029	) {
807	no strict 'refs';	2030	no strict 'refs';
808	my ($pkg, @funs) = @$_;	2031	my ($pkg, @funs) = @$_;
809	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2032	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
810	for @funs;	2033	for @funs;
811	}	2034	}
		2035
		2036	=over 4
		2037
		2038	=item @retval = safe_eval $code, [var => value, ...]
		2039
		2040	Compiled and executes the given perl code snippet. additional var/value
		2041	pairs result in temporary local (my) scalar variables of the given name
		2042	that are available in the code snippet. Example:
		2043
		2044	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2045
		2046	=cut
812		2047
813	sub safe_eval($;@) {	2048	sub safe_eval($;@) {
814	my ($code, %vars) = @_;	2049	my ($code, %vars) = @_;
815		2050
816	my $qcode = $code;	2051	my $qcode = $code;
…		…
839	}	2074	}
840		2075
841	wantarray ? @res : $res[0]	2076	wantarray ? @res : $res[0]
842	}	2077	}
843		2078
		2079	=item cf::register_script_function $function => $cb
		2080
		2081	Register a function that can be called from within map/npc scripts. The
		2082	function should be reasonably secure and should be put into a package name
		2083	like the extension.
		2084
		2085	Example: register a function that gets called whenever a map script calls
		2086	C<rent::overview>, as used by the C<rent> extension.
		2087
		2088	cf::register_script_function "rent::overview" => sub {
		2089	...
		2090	};
		2091
		2092	=cut
		2093
844	sub register_script_function {	2094	sub register_script_function {
845	my ($fun, $cb) = @_;	2095	my ($fun, $cb) = @_;
846		2096
847	no strict 'refs';	2097	no strict 'refs';
848	*{"safe::$fun"} = $safe_hole->wrap ($cb);	2098	*{"safe::$fun"} = $safe_hole->wrap ($cb);
849	}	2099	}
850		2100
		2101	=back
		2102
		2103	=cut
		2104
		2105	#############################################################################
		2106
		2107	=head2 EXTENSION DATABASE SUPPORT
		2108
		2109	Crossfire maintains a very simple database for extension use. It can
		2110	currently store anything that can be serialised using Storable, which
		2111	excludes objects.
		2112
		2113	The parameter C<$family> should best start with the name of the extension
		2114	using it, it should be unique.
		2115
		2116	=over 4
		2117
		2118	=item $hashref = cf::db_get $family
		2119
		2120	Return a hashref for use by the extension C<$family>, which can be
		2121	modified. After modifications, you have to call C<cf::db_dirty> or
		2122	C<cf::db_sync>.
		2123
		2124	=item $value = cf::db_get $family => $key
		2125
		2126	Returns a single value from the database
		2127
		2128	=item cf::db_put $family => $hashref
		2129
		2130	Stores the given family hashref into the database. Updates are delayed, if
		2131	you want the data to be synced to disk immediately, use C<cf::db_sync>.
		2132
		2133	=item cf::db_put $family => $key => $value
		2134
		2135	Stores the given C<$value> in the family hash. Updates are delayed, if you
		2136	want the data to be synced to disk immediately, use C<cf::db_sync>.
		2137
		2138	=item cf::db_dirty
		2139
		2140	Marks the database as dirty, to be updated at a later time.
		2141
		2142	=item cf::db_sync
		2143
		2144	Immediately write the database to disk I<if it is dirty>.
		2145
		2146	=cut
		2147
		2148	our $DB;
		2149
		2150	{
		2151	my $path = cf::localdir . "/database.pst";
		2152
		2153	sub db_load() {
		2154	$DB = stat $path ? Storable::retrieve $path : { };
		2155	}
		2156
		2157	my $pid;
		2158
		2159	sub db_save() {
		2160	waitpid $pid, 0 if $pid;
		2161	if (0 == ($pid = fork)) {
		2162	$DB->{_meta}{version} = 1;
		2163	Storable::nstore $DB, "$path~";
		2164	rename "$path~", $path;
		2165	cf::_exit 0 if defined $pid;
		2166	}
		2167	}
		2168
		2169	my $dirty;
		2170
		2171	sub db_sync() {
		2172	db_save if $dirty;
		2173	undef $dirty;
		2174	}
		2175
		2176	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
		2177	db_sync;
		2178	});
		2179
		2180	sub db_dirty() {
		2181	$dirty = 1;
		2182	$idle->start;
		2183	}
		2184
		2185	sub db_get($;$) {
		2186	@_ >= 2
		2187	? $DB->{$_[0]}{$_[1]}
		2188	: ($DB->{$_[0]} ||= { })
		2189	}
		2190
		2191	sub db_put($$;$) {
		2192	if (@_ >= 3) {
		2193	$DB->{$_[0]}{$_[1]} = $_[2];
		2194	} else {
		2195	$DB->{$_[0]} = $_[1];
		2196	}
		2197	db_dirty;
		2198	}
		2199
		2200	cf::global->attach (
		2201	prio => 10000,
		2202	on_cleanup => sub {
		2203	db_sync;
		2204	},
		2205	);
		2206	}
		2207
851	#############################################################################	2208	#############################################################################
852	# the server's main()	2209	# the server's main()
853		2210
		2211	sub cfg_load {
		2212	open my $fh, "<:utf8", cf::confdir . "/config"
		2213	or return;
		2214
		2215	local $/;
		2216	*CFG = YAML::Syck::Load <$fh>;
		2217
		2218	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2219
		2220	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2221	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2222
		2223	if (exists $CFG{mlockall}) {
		2224	eval {
		2225	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2226	and die "WARNING: m(un)lockall failed: $!\n";
		2227	};
		2228	warn $@ if $@;
		2229	}
		2230	}
		2231
854	sub main {	2232	sub main {
		2233	# we must not ever block the main coroutine
		2234	local $Coro::idle = sub {
		2235	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2236	(async {
		2237	Event::one_event;
		2238	})->prio (Coro::PRIO_MAX);
		2239	};
		2240
		2241	cfg_load;
		2242	db_load;
		2243	load_extensions;
855	Event::loop;	2244	Event::loop;
856	}	2245	}
857		2246
858	#############################################################################	2247	#############################################################################
859	# initialisation	2248	# initialisation and cleanup
860		2249
861	register "<global>", __PACKAGE__;	2250	# install some emergency cleanup handlers
		2251	BEGIN {
		2252	for my $signal (qw(INT HUP TERM)) {
		2253	Event->signal (
		2254	data => WF_AUTOCANCEL,
		2255	signal => $signal,
		2256	cb => sub {
		2257	cf::cleanup "SIG$signal";
		2258	},
		2259	);
		2260	}
		2261	}
		2262
		2263	sub emergency_save() {
		2264	my $freeze_guard = cf::freeze_mainloop;
		2265
		2266	warn "enter emergency perl save\n";
		2267
		2268	cf::sync_job {
		2269	# use a peculiar iteration method to avoid tripping on perl
		2270	# refcount bugs in for. also avoids problems with players
		2271	# and maps saved/destroyed asynchronously.
		2272	warn "begin emergency player save\n";
		2273	for my $login (keys %cf::PLAYER) {
		2274	my $pl = $cf::PLAYER{$login} or next;
		2275	$pl->valid or next;
		2276	$pl->save;
		2277	}
		2278	warn "end emergency player save\n";
		2279
		2280	warn "begin emergency map save\n";
		2281	for my $path (keys %cf::MAP) {
		2282	my $map = $cf::MAP{$path} or next;
		2283	$map->valid or next;
		2284	$map->save;
		2285	}
		2286	warn "end emergency map save\n";
		2287	};
		2288
		2289	warn "leave emergency perl save\n";
		2290	}
		2291
		2292	sub reload() {
		2293	# can/must only be called in main
		2294	if ($Coro::current != $Coro::main) {
		2295	warn "can only reload from main coroutine\n";
		2296	return;
		2297	}
		2298
		2299	warn "reloading...";
		2300
		2301	warn "freezing server";
		2302	my $guard = freeze_mainloop;
		2303	cf::emergency_save;
		2304
		2305	warn "sync database to disk";
		2306	cf::db_sync;
		2307	IO::AIO::flush;
		2308
		2309	eval {
		2310	# if anything goes wrong in here, we should simply crash as we already saved
		2311
		2312	warn "cancel all watchers";
		2313	for (Event::all_watchers) {
		2314	$_->cancel if $_->data & WF_AUTOCANCEL;
		2315	}
		2316
		2317	warn "cancel all extension coros";
		2318	$_->cancel for values %EXT_CORO;
		2319	%EXT_CORO = ();
		2320
		2321	warn "remove commands";
		2322	%COMMAND = ();
		2323
		2324	warn "remove ext commands";
		2325	%EXTCMD = ();
		2326
		2327	warn "unload/nuke all extensions";
		2328	for my $pkg (@EXTS) {
		2329	warn "... unloading $pkg";
		2330
		2331	if (my $cb = $pkg->can ("unload")) {
		2332	eval {
		2333	$cb->($pkg);
		2334	1
		2335	} or warn "$pkg unloaded, but with errors: $@";
		2336	}
		2337
		2338	warn "... nuking $pkg";
		2339	Symbol::delete_package $pkg;
		2340	}
		2341
		2342	warn "unload all perl modules loaded from $LIBDIR";
		2343	while (my ($k, $v) = each %INC) {
		2344	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2345
		2346	warn "removing <$k>";
		2347	delete $INC{$k};
		2348
		2349	$k =~ s/\.pm$//;
		2350	$k =~ s/\//::/g;
		2351
		2352	if (my $cb = $k->can ("unload_module")) {
		2353	$cb->();
		2354	}
		2355
		2356	Symbol::delete_package $k;
		2357	}
		2358
		2359	warn "get rid of safe::, as good as possible";
		2360	Symbol::delete_package "safe::$_"
		2361	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2362
		2363	warn "unload cf.pm \"a bit\"";
		2364	delete $INC{"cf.pm"};
		2365
		2366	# don't, removes xs symbols, too,
		2367	# and global variables created in xs
		2368	#Symbol::delete_package __PACKAGE__;
		2369
		2370	warn "reloading cf.pm";
		2371	require cf;
		2372	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2373
		2374	warn "load config and database again";
		2375	cf::cfg_load;
		2376	cf::db_load;
		2377
		2378	warn "load extensions";
		2379	cf::load_extensions;
		2380
		2381	warn "reattach attachments to objects/players";
		2382	_global_reattach;
		2383	warn "reattach attachments to maps";
		2384	reattach $_ for values %MAP;
		2385	};
		2386
		2387	if ($@) {
		2388	warn $@;
		2389	warn "error while reloading, exiting.";
		2390	exit 1;
		2391	}
		2392
		2393	warn "reloaded";
		2394	};
		2395
		2396	our $RELOAD_WATCHER; # used only during reload
		2397
		2398	register_command "reload" => sub {
		2399	my ($who, $arg) = @_;
		2400
		2401	if ($who->flag (FLAG_WIZ)) {
		2402	$who->message ("reloading server.");
		2403
		2404	# doing reload synchronously and two reloads happen back-to-back,
		2405	# coro crashes during coro_state_free->destroy here.
		2406
		2407	$RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
		2408	reload;
		2409	undef $RELOAD_WATCHER;
		2410	});
		2411	}
		2412	};
862		2413
863	unshift @INC, $LIBDIR;	2414	unshift @INC, $LIBDIR;
864		2415
865	load_extensions;
866
867	$TICK_WATCHER = Event->timer (	2416	$TICK_WATCHER = Event->timer (
		2417	reentrant => 0,
868	prio => 1,	2418	prio => 0,
869	at => $NEXT_TICK || 1,	2419	at => $NEXT_TICK || $TICK,
		2420	data => WF_AUTOCANCEL,
870	cb => sub {	2421	cb => sub {
		2422	$NOW = Event::time;
		2423
871	cf::server_tick; # one server iteration	2424	cf::server_tick; # one server iteration
872		2425	$RUNTIME += $TICK;
873	my $NOW = Event::time;
874	$NEXT_TICK += $TICK;	2426	$NEXT_TICK += $TICK;
875		2427
		2428	$WAIT_FOR_TICK->broadcast;
		2429	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2430
876	# if we are delayed by four ticks, skip them all	2431	# if we are delayed by four ticks or more, skip them all
877	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2432	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
878		2433
879	$TICK_WATCHER->at ($NEXT_TICK);	2434	$TICK_WATCHER->at ($NEXT_TICK);
880	$TICK_WATCHER->start;	2435	$TICK_WATCHER->start;
881	},	2436	},
882	);	2437	);
883		2438
884	_reload_2;	2439	IO::AIO::max_poll_time $TICK * 0.2;
		2440
		2441	$AIO_POLL_WATCHER = Event->io (
		2442	fd => IO::AIO::poll_fileno,
		2443	poll => 'r',
		2444	prio => 5,
		2445	data => WF_AUTOCANCEL,
		2446	cb => \&IO::AIO::poll_cb,
		2447	);
		2448
		2449	$WRITE_RUNTIME_WATCHER = Event->timer (
		2450	data => WF_AUTOCANCEL,
		2451	after => 0,
		2452	interval => 10,
		2453	cb => sub {
		2454	(Coro::unblock_sub {
		2455	write_runtime
		2456	or warn "ERROR: unable to write runtime file: $!";
		2457	})->();
		2458	},
		2459	);
		2460
		2461	END { cf::emergency_save }
885		2462
886	1	2463	1
887		2464

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