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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.34 by root, Thu Aug 24 13:13:49 2006 UTC vs.
Revision 1.208 by root, Mon Feb 12 00:27:20 2007 UTC

1	package cf;	1	package cf;
		2
		3	use utf8;
		4	use strict;
2		5
3	use Symbol;	6	use Symbol;
4	use List::Util;	7	use List::Util;
5	use Storable;	8	use Storable;
6	use Opcode;	9	use Opcode;
7	use Safe;	10	use Safe;
8	use Safe::Hole;	11	use Safe::Hole;
9		12
		13	use Coro 3.5 ();
		14	use Coro::Event;
		15	use Coro::Timer;
		16	use Coro::Signal;
		17	use Coro::Semaphore;
		18	use Coro::AIO;
		19
		20	use BDB ();
		21	use Data::Dumper;
		22	use Digest::MD5;
		23	use Fcntl;
		24	use IO::AIO 2.32 ();
		25	use YAML::Syck ();
10	use Time::HiRes;	26	use Time::HiRes;
11	use Event;	27	use Compress::LZF;
		28
		29	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		30
12	$Event::Eval = 1; # no idea why this is required, but it is	31	use Event; $Event::Eval = 1; # no idea why this is required, but it is
13		32
14	use strict;	33	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
15		34
16	our %COMMAND;	35	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
		36	$YAML::Syck::ImplicitUnicode = 1;
		37
		38	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
		39
		40	our %COMMAND = ();
		41	our %COMMAND_TIME = ();
		42
		43	our @EXTS = (); # list of extension package names
		44	our %EXTCMD = ();
		45	our %EXT_CORO = (); # coroutines bound to extensions
		46	our %EXT_MAP = (); # pluggable maps
		47
17	our @EVENT;	48	our @EVENT;
18	our %PROP_TYPE;	49	our $LIBDIR = datadir . "/ext";
19	our %PROP_IDX;	50
20	our $LIBDIR = maps_directory "perl";	51	our $TICK = MAX_TIME * 1e-6;
		52	our $TICK_WATCHER;
		53	our $AIO_POLL_WATCHER;
		54	our $WRITE_RUNTIME_WATCHER;
		55	our $NEXT_TICK;
		56	our $NOW;
		57	our $USE_FSYNC = 1; # use fsync to write maps - default off
		58
		59	our $BDB_POLL_WATCHER;
		60	our $DB_ENV;
		61
		62	our %CFG;
		63
		64	our $UPTIME; $UPTIME ||= time;
		65	our $RUNTIME;
		66
		67	our %PLAYER; # all users
		68	our %MAP; # all maps
		69	our $LINK_MAP; # the special {link} map, which is always available
		70	our $RANDOM_MAPS = cf::localdir . "/random";
		71	our $BDB_ENV_DIR = cf::localdir . "/db";
		72
		73	our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal;
		74	our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal;
		75
		76	# used to convert map paths into valid unix filenames by replacing / by ∕
		77	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		78
		79	binmode STDOUT;
		80	binmode STDERR;
		81
		82	# read virtual server time, if available
		83	unless ($RUNTIME || !-e cf::localdir . "/runtime") {
		84	open my $fh, "<", cf::localdir . "/runtime"
		85	or die "unable to read runtime file: $!";
		86	$RUNTIME = <$fh> + 0.;
		87	}
		88
		89	mkdir cf::localdir;
		90	mkdir cf::localdir . "/" . cf::playerdir;
		91	mkdir cf::localdir . "/" . cf::tmpdir;
		92	mkdir cf::localdir . "/" . cf::uniquedir;
		93	mkdir $RANDOM_MAPS;
		94	mkdir $BDB_ENV_DIR;
		95
		96	our $EMERGENCY_POSITION;
		97
		98	sub cf::map::normalise;
		99
		100	#############################################################################
		101
		102	=head2 GLOBAL VARIABLES
		103
		104	=over 4
		105
		106	=item $cf::UPTIME
		107
		108	The timestamp of the server start (so not actually an uptime).
		109
		110	=item $cf::RUNTIME
		111
		112	The time this server has run, starts at 0 and is increased by $cf::TICK on
		113	every server tick.
		114
		115	=item $cf::LIBDIR
		116
		117	The perl library directory, where extensions and cf-specific modules can
		118	be found. It will be added to C<@INC> automatically.
		119
		120	=item $cf::NOW
		121
		122	The time of the last (current) server tick.
		123
		124	=item $cf::TICK
		125
		126	The interval between server ticks, in seconds.
		127
		128	=item %cf::CFG
		129
		130	Configuration for the server, loaded from C</etc/crossfire/config>, or
		131	from wherever your confdir points to.
		132
		133	=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE
		134
		135	These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK)
		136	or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick
		137	processing has been done. Call C<< ->wait >> on them to maximise the
		138	window of cpu time available, or simply to synchronise to the server tick.
		139
		140	=back
		141
		142	=cut
21		143
22	BEGIN {	144	BEGIN {
23	@EVENT = map lc, @EVENT;
24
25	*CORE::GLOBAL::warn = sub {	145	*CORE::GLOBAL::warn = sub {
26	my $msg = join "", @_;	146	my $msg = join "", @_;
		147	utf8::encode $msg;
		148
27	$msg .= "\n"	149	$msg .= "\n"
28	unless $msg =~ /\n$/;	150	unless $msg =~ /\n$/;
29		151
30	print STDERR "cfperl: $msg";
31	LOG llevError, "cfperl: $msg";	152	LOG llevError, $msg;
32	};	153	};
33	}	154	}
34		155
35	my %ignore_set = (MAP_PROP_PATH => 1); # I hate the plug-in api. Deeply!	156	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
		157	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
		158	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
		159	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
		160	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		161	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
36		162
37	# generate property mutators	163	# we bless all objects into (empty) derived classes to force a method lookup
38	sub prop_gen {	164	# within the Safe compartment.
39	my ($prefix, $class) = @_;	165	for my $pkg (qw(
40		166	cf::global cf::attachable
		167	cf::object cf::object::player
		168	cf::client cf::player
		169	cf::arch cf::living
		170	cf::map cf::party cf::region
		171	)) {
41	no strict 'refs';	172	no strict 'refs';
42
43	for my $prop (keys %PROP_TYPE) {
44	$prop =~ /^\Q$prefix\E_(.*$)/ or next;
45	my $sub = lc $1;
46
47	my $type = $PROP_TYPE{$prop};
48	my $idx = $PROP_IDX {$prop};
49
50	*{"$class\::get_$sub"} = *{"$class\::$sub"} = sub {
51	$_[0]->get_property ($type, $idx)
52	};
53
54	*{"$class\::set_$sub"} = sub {
55	$_[0]->set_property ($type, $idx, $_[1]);
56	} unless $ignore_set{$prop};
57	}
58	}
59
60	# auto-generate most of the API
61
62	prop_gen OBJECT_PROP => "cf::object";
63	# CFAPI_OBJECT_ANIMATION?
64	prop_gen PLAYER_PROP => "cf::object::player";
65
66	prop_gen MAP_PROP => "cf::map";
67	prop_gen ARCH_PROP => "cf::arch";
68
69	# guessed hierarchies
70
71	@ext::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
72	@ext::cf::object::map::ISA = @cf::object::map::ISA = 'cf::object';
73
74	# we bless all objects into derived classes to force a method lookup
75	# within the Safe compartment.
76	for my $pkg (qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region cf::arch)) {
77	no strict 'refs';
78	@{"ext::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;	173	@{"safe::$pkg\::wrap::ISA"} = @{"$pkg\::wrap::ISA"} = $pkg;
79	}	174	}
80		175
81	$Event::DIED = sub {	176	$Event::DIED = sub {
82	warn "error in event callback: @_";	177	warn "error in event callback: @_";
83	};	178	};
84		179
85	my %ext_pkg;	180	=head2 UTILITY FUNCTIONS
86	my @exts;
87	my @hook;
88	my %command;
89	my %extcmd;
90		181
91	sub inject_event {	182	=over 4
92	my $extension = shift;	183
		184	=item dumpval $ref
		185
		186	=cut
		187
		188	sub dumpval {
		189	eval {
		190	local $SIG{__DIE__};
		191	my $d;
		192	if (1) {
		193	$d = new Data::Dumper([$_[0]], ["*var"]);
		194	$d->Terse(1);
		195	$d->Indent(2);
		196	$d->Quotekeys(0);
		197	$d->Useqq(1);
		198	#$d->Bless(...);
		199	$d->Seen($_[1]) if @_ > 1;
		200	$d = $d->Dump();
		201	}
		202	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		203	$d
		204	} || "[unable to dump $_[0]: '$@']";
		205	}
		206
		207	use JSON::Syck (); # TODO# replace by JSON::PC once working
		208
		209	=item $ref = cf::from_json $json
		210
		211	Converts a JSON string into the corresponding perl data structure.
		212
		213	=cut
		214
		215	sub from_json($) {
		216	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
		217	JSON::Syck::Load $_[0]
		218	}
		219
		220	=item $json = cf::to_json $ref
		221
		222	Converts a perl data structure into its JSON representation.
		223
		224	=cut
		225
		226	sub to_json($) {
		227	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
		228	JSON::Syck::Dump $_[0]
		229	}
		230
		231	=item cf::lock_wait $string
		232
		233	Wait until the given lock is available. See cf::lock_acquire.
		234
		235	=item my $lock = cf::lock_acquire $string
		236
		237	Wait until the given lock is available and then acquires it and returns
		238	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		239	for example when the coroutine gets canceled), the lock is automatically
		240	returned.
		241
		242	Lock names should begin with a unique identifier (for example, cf::map::find
		243	uses map_find and cf::map::load uses map_load).
		244
		245	=cut
		246
		247	our %LOCK;
		248
		249	sub lock_wait($) {
		250	my ($key) = @_;
		251
		252	# wait for lock, if any
		253	while ($LOCK{$key}) {
		254	push @{ $LOCK{$key} }, $Coro::current;
		255	Coro::schedule;
		256	}
		257	}
		258
		259	sub lock_acquire($) {
		260	my ($key) = @_;
		261
		262	# wait, to be sure we are not locked
		263	lock_wait $key;
		264
		265	$LOCK{$key} = [];
		266
		267	Coro::guard {
		268	# wake up all waiters, to be on the safe side
		269	$_->ready for @{ delete $LOCK{$key} };
		270	}
		271	}
		272
		273	sub freeze_mainloop {
		274	return unless $TICK_WATCHER->is_active;
		275
		276	my $guard = Coro::guard {
		277	$TICK_WATCHER->start;
		278	$WRITE_RUNTIME_WATCHER->start;
		279	};
		280	$WRITE_RUNTIME_WATCHER->stop;
		281	$TICK_WATCHER->stop;
		282	$guard
		283	}
		284
		285	=item cf::async { BLOCK }
		286
		287	Currently the same as Coro::async_pool, meaning you cannot use
		288	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		289	thing you are allowed to do is call C<prio> on it.
		290
		291	=cut
		292
		293	BEGIN { *async = \&Coro::async_pool }
		294
		295	=item cf::sync_job { BLOCK }
		296
		297	The design of crossfire+ requires that the main coro ($Coro::main) is
		298	always able to handle events or runnable, as crossfire+ is only partly
		299	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		300
		301	If it must be done, put the blocking parts into C<sync_job>. This will run
		302	the given BLOCK in another coroutine while waiting for the result. The
		303	server will be frozen during this time, so the block should either finish
		304	fast or be very important.
		305
		306	=cut
		307
		308	sub sync_job(&) {
		309	my ($job) = @_;
		310
		311	if ($Coro::current == $Coro::main) {
		312	# this is the main coro, too bad, we have to block
		313	# till the operation succeeds, freezing the server :/
		314
		315	# TODO: use suspend/resume instead
		316	# (but this is cancel-safe)
		317	my $freeze_guard = freeze_mainloop;
		318
		319	my $busy = 1;
		320	my @res;
		321
		322	(async {
		323	@res = eval { $job->() };
		324	warn $@ if $@;
		325	undef $busy;
		326	})->prio (Coro::PRIO_MAX);
		327
		328	while ($busy) {
		329	Coro::cede or Event::one_event;
		330	}
		331
		332	wantarray ? @res : $res[0]
		333	} else {
		334	# we are in another coroutine, how wonderful, everything just works
		335
		336	$job->()
		337	}
		338	}
		339
		340	=item $coro = cf::async_ext { BLOCK }
		341
		342	Like async, but this coro is automatically being canceled when the
		343	extension calling this is being unloaded.
		344
		345	=cut
		346
		347	sub async_ext(&) {
93	my $event_code = shift;	348	my $cb = shift;
94		349
95	my $cb = $hook[$event_code]{$extension}	350	my $coro = &Coro::async ($cb);
		351
		352	$coro->on_destroy (sub {
		353	delete $EXT_CORO{$coro+0};
		354	});
		355	$EXT_CORO{$coro+0} = $coro;
		356
		357	$coro
		358	}
		359
		360	sub write_runtime {
		361	my $runtime = cf::localdir . "/runtime";
		362
		363	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
96	or return;	364	or return;
97		365
98	&$cb	366	my $value = $cf::RUNTIME + 90 + 10;
99	}	367	# 10 is the runtime save interval, for a monotonic clock
		368	# 60 allows for the watchdog to kill the server.
100		369
101	sub inject_global_event {	370	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		371	and return;
		372
		373	# always fsync - this file is important
		374	aio_fsync $fh
		375	and return;
		376
		377	close $fh
		378	or return;
		379
		380	aio_rename "$runtime~", $runtime
		381	and return;
		382
		383	1
		384	}
		385
		386	=back
		387
		388	=cut
		389
		390	#############################################################################
		391
		392	=head2 ATTACHABLE OBJECTS
		393
		394	Many objects in crossfire are so-called attachable objects. That means you can
		395	attach callbacks/event handlers (a collection of which is called an "attachment")
		396	to it. All such attachable objects support the following methods.
		397
		398	In the following description, CLASS can be any of C<global>, C<object>
		399	C<player>, C<client> or C<map> (i.e. the attachable objects in
		400	crossfire+).
		401
		402	=over 4
		403
		404	=item $attachable->attach ($attachment, key => $value...)
		405
		406	=item $attachable->detach ($attachment)
		407
		408	Attach/detach a pre-registered attachment to a specific object and give it
		409	the specified key/value pairs as arguments.
		410
		411	Example, attach a minesweeper attachment to the given object, making it a
		412	10x10 minesweeper game:
		413
		414	$obj->attach (minesweeper => width => 10, height => 10);
		415
		416	=item $bool = $attachable->attached ($name)
		417
		418	Checks wether the named attachment is currently attached to the object.
		419
		420	=item cf::CLASS->attach ...
		421
		422	=item cf::CLASS->detach ...
		423
		424	Define an anonymous attachment and attach it to all objects of the given
		425	CLASS. See the next function for an explanation of its arguments.
		426
		427	You can attach to global events by using the C<cf::global> class.
		428
		429	Example, log all player logins:
		430
		431	cf::player->attach (
		432	on_login => sub {
		433	my ($pl) = @_;
		434	...
		435	},
		436	);
		437
		438	Example, attach to the jeweler skill:
		439
		440	cf::object->attach (
		441	type => cf::SKILL,
		442	subtype => cf::SK_JEWELER,
		443	on_use_skill => sub {
		444	my ($sk, $ob, $part, $dir, $msg) = @_;
		445	...
		446	},
		447	);
		448
		449	=item cf::CLASS::attachment $name, ...
		450
		451	Register an attachment by C<$name> through which attachable objects of the
		452	given CLASS can refer to this attachment.
		453
		454	Some classes such as crossfire maps and objects can specify attachments
		455	that are attached at load/instantiate time, thus the need for a name.
		456
		457	These calls expect any number of the following handler/hook descriptions:
		458
		459	=over 4
		460
		461	=item prio => $number
		462
		463	Set the priority for all following handlers/hooks (unless overwritten
		464	by another C<prio> setting). Lower priority handlers get executed
		465	earlier. The default priority is C<0>, and many built-in handlers are
		466	registered at priority C<-1000>, so lower priorities should not be used
		467	unless you know what you are doing.
		468
		469	=item type => $type
		470
		471	(Only for C<< cf::object->attach >> calls), limits the attachment to the
		472	given type of objects only (the additional parameter C<subtype> can be
		473	used to further limit to the given subtype).
		474
		475	=item on_I<event> => \&cb
		476
		477	Call the given code reference whenever the named event happens (event is
		478	something like C<instantiate>, C<apply>, C<use_skill> and so on, and which
		479	handlers are recognised generally depends on the type of object these
		480	handlers attach to).
		481
		482	See F<include/eventinc.h> for the full list of events supported, and their
		483	class.
		484
		485	=item package => package::
		486
		487	Look for sub functions of the name C<< on_I<event> >> in the given
		488	package and register them. Only handlers for eevents supported by the
		489	object/class are recognised.
		490
		491	=back
		492
		493	Example, define an attachment called "sockpuppet" that calls the given
		494	event handler when a monster attacks:
		495
		496	cf::object::attachment sockpuppet =>
		497	on_skill_attack => sub {
		498	my ($self, $victim) = @_;
		499	...
		500	}
		501	}
		502
		503	=item $attachable->valid
		504
		505	Just because you have a perl object does not mean that the corresponding
		506	C-level object still exists. If you try to access an object that has no
		507	valid C counterpart anymore you get an exception at runtime. This method
		508	can be used to test for existence of the C object part without causing an
		509	exception.
		510
		511	=cut
		512
		513	# the following variables are defined in .xs and must not be re-created
		514	our @CB_GLOBAL = (); # registry for all global events
		515	our @CB_ATTACHABLE = (); # registry for all attachables
		516	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
		517	our @CB_PLAYER = ();
		518	our @CB_CLIENT = ();
		519	our @CB_TYPE = (); # registry for type (cf-object class) based events
		520	our @CB_MAP = ();
		521
		522	my %attachment;
		523
		524	sub cf::attachable::thawer_merge {
		525	# simply override everything except _meta
		526	local $_[0]{_meta};
		527	%{$_[0]} = %{$_[1]};
		528	}
		529
		530	sub _attach_cb($$$$) {
		531	my ($registry, $event, $prio, $cb) = @_;
		532
		533	use sort 'stable';
		534
		535	$cb = [$prio, $cb];
		536
		537	@{$registry->[$event]} = sort
		538	{ $a->[0] cmp $b->[0] }
		539	@{$registry->[$event] || []}, $cb;
		540	}
		541
		542	# hack
		543	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
		544
		545	# attach handles attaching event callbacks
		546	# the only thing the caller has to do is pass the correct
		547	# registry (== where the callback attaches to).
		548	sub _attach {
		549	my ($registry, $klass, @arg) = @_;
		550
		551	my $object_type;
		552	my $prio = 0;
		553	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
		554
		555	#TODO: get rid of this hack
		556	if ($attachable_klass{$klass}) {
		557	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		558	}
		559
		560	while (@arg) {
		561	my $type = shift @arg;
		562
		563	if ($type eq "prio") {
		564	$prio = shift @arg;
		565
		566	} elsif ($type eq "type") {
		567	$object_type = shift @arg;
		568	$registry = $CB_TYPE[$object_type] ||= [];
		569
		570	} elsif ($type eq "subtype") {
		571	defined $object_type or Carp::croak "subtype specified without type";
		572	my $object_subtype = shift @arg;
		573	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];
		574
		575	} elsif ($type eq "package") {
		576	my $pkg = shift @arg;
		577
		578	while (my ($name, $id) = each %cb_id) {
		579	if (my $cb = $pkg->can ($name)) {
		580	_attach_cb $registry, $id, $prio, $cb;
		581	}
		582	}
		583
		584	} elsif (exists $cb_id{$type}) {
		585	_attach_cb $registry, $cb_id{$type}, $prio, shift @arg;
		586
		587	} elsif (ref $type) {
		588	warn "attaching objects not supported, ignoring.\n";
		589
		590	} else {
		591	shift @arg;
		592	warn "attach argument '$type' not supported, ignoring.\n";
		593	}
		594	}
		595	}
		596
		597	sub _object_attach {
		598	my ($obj, $name, %arg) = @_;
		599
		600	return if exists $obj->{_attachment}{$name};
		601
		602	if (my $attach = $attachment{$name}) {
		603	my $registry = $obj->registry;
		604
		605	for (@$attach) {
		606	my ($klass, @attach) = @$_;
		607	_attach $registry, $klass, @attach;
		608	}
		609
		610	$obj->{$name} = \%arg;
		611	} else {
		612	warn "object uses attachment '$name' that is not available, postponing.\n";
		613	}
		614
		615	$obj->{_attachment}{$name} = undef;
		616	}
		617
		618	sub cf::attachable::attach {
		619	if (ref $_[0]) {
		620	_object_attach @_;
		621	} else {
		622	_attach shift->_attach_registry, @_;
		623	}
		624	};
		625
		626	# all those should be optimised
		627	sub cf::attachable::detach {
		628	my ($obj, $name) = @_;
		629
		630	if (ref $obj) {
		631	delete $obj->{_attachment}{$name};
		632	reattach ($obj);
		633	} else {
		634	Carp::croak "cannot, currently, detach class attachments";
		635	}
		636	};
		637
		638	sub cf::attachable::attached {
		639	my ($obj, $name) = @_;
		640
		641	exists $obj->{_attachment}{$name}
		642	}
		643
		644	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
		645	eval "#line " . __LINE__ . " 'cf.pm'
		646	sub cf::\L$klass\E::_attach_registry {
		647	(\\\@CB_$klass, KLASS_$klass)
		648	}
		649
		650	sub cf::\L$klass\E::attachment {
		651	my \$name = shift;
		652
		653	\$attachment{\$name} = [[KLASS_$klass, \@_]];
		654	}
		655	";
		656	die if $@;
		657	}
		658
		659	our $override;
		660	our @invoke_results = (); # referenced from .xs code. TODO: play tricks with reify and mortals?
		661
		662	sub override {
		663	$override = 1;
		664	@invoke_results = ();
		665	}
		666
		667	sub do_invoke {
102	my $event = shift;	668	my $event = shift;
		669	my $callbacks = shift;
103		670
104	my $cb = $hook[$event]	671	@invoke_results = ();
		672
		673	local $override;
		674
		675	for (@$callbacks) {
		676	eval { &{$_->[1]} };
		677
		678	if ($@) {
		679	warn "$@";
		680	warn "... while processing $EVENT[$event][0](@_) event, skipping processing altogether.\n";
		681	override;
		682	}
		683
		684	return 1 if $override;
		685	}
		686
		687	0
		688	}
		689
		690	=item $bool = cf::global::invoke (EVENT_CLASS_XXX, ...)
		691
		692	=item $bool = $attachable->invoke (EVENT_CLASS_XXX, ...)
		693
		694	Generate an object-specific event with the given arguments.
		695
		696	This API is preliminary (most likely, the EVENT_CLASS_xxx prefix will be
		697	removed in future versions), and there is no public API to access override
		698	results (if you must, access C<@cf::invoke_results> directly).
		699
		700	=back
		701
		702	=cut
		703
		704	#############################################################################
		705	# object support
		706
		707	sub reattach {
		708	# basically do the same as instantiate, without calling instantiate
		709	my ($obj) = @_;
		710
		711	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		712
		713	my $registry = $obj->registry;
		714
		715	@$registry = ();
		716
		717	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		718
		719	for my $name (keys %{ $obj->{_attachment} || {} }) {
		720	if (my $attach = $attachment{$name}) {
		721	for (@$attach) {
		722	my ($klass, @attach) = @$_;
		723	_attach $registry, $klass, @attach;
		724	}
		725	} else {
		726	warn "object uses attachment '$name' that is not available, postponing.\n";
		727	}
		728	}
		729	}
		730
		731	cf::attachable->attach (
		732	prio => -1000000,
		733	on_instantiate => sub {
		734	my ($obj, $data) = @_;
		735
		736	$data = from_json $data;
		737
		738	for (@$data) {
		739	my ($name, $args) = @$_;
		740
		741	$obj->attach ($name, %{$args || {} });
		742	}
		743	},
		744	on_reattach => \&reattach,
		745	on_clone => sub {
		746	my ($src, $dst) = @_;
		747
		748	@{$dst->registry} = @{$src->registry};
		749
		750	%$dst = %$src;
		751
		752	%{$dst->{_attachment}} = %{$src->{_attachment}}
		753	if exists $src->{_attachment};
		754	},
		755	);
		756
		757	sub object_freezer_save {
		758	my ($filename, $rdata, $objs) = @_;
		759
		760	sync_job {
		761	if (length $$rdata) {
		762	warn sprintf "saving %s (%d,%d)\n",
		763	$filename, length $$rdata, scalar @$objs;
		764
		765	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		766	chmod SAVE_MODE, $fh;
		767	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		768	aio_fsync $fh if $cf::USE_FSYNC;
		769	close $fh;
		770
		771	if (@$objs) {
		772	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		773	chmod SAVE_MODE, $fh;
		774	my $data = Storable::nfreeze { version => 1, objs => $objs };
		775	aio_write $fh, 0, (length $data), $data, 0;
		776	aio_fsync $fh if $cf::USE_FSYNC;
		777	close $fh;
		778	aio_rename "$filename.pst~", "$filename.pst";
		779	}
		780	} else {
		781	aio_unlink "$filename.pst";
		782	}
		783
		784	aio_rename "$filename~", $filename;
		785	} else {
		786	warn "FATAL: $filename~: $!\n";
		787	}
		788	} else {
		789	aio_unlink $filename;
		790	aio_unlink "$filename.pst";
		791	}
		792
		793	#d##TODO# nuke non .map-files if exist
		794	if ($filename =~ s/\.map$//) {
		795	aio_unlink $filename;
		796	aio_unlink "$filename.pst";
		797	}
		798	}
		799	}
		800
		801	sub object_freezer_as_string {
		802	my ($rdata, $objs) = @_;
		803
		804	use Data::Dumper;
		805
		806	$$rdata . Dumper $objs
		807	}
		808
		809	sub object_thawer_load {
		810	my ($filename) = @_;
		811
		812	my ($data, $av);
		813
		814	#d#TODO remove .map if file does not exist
		815	aio_stat $filename and $filename =~ s/\.map$//;
		816
		817	(aio_load $filename, $data) >= 0
105	or return;	818	or return;
106		819
107	List::Util::max map &$_, values %$cb	820	unless (aio_stat "$filename.pst") {
108	}	821	(aio_load "$filename.pst", $av) >= 0
109		822	or return;
110	sub inject_command {	823	$av = eval { (Storable::thaw $av)->{objs} };
111	my ($name, $obj, $params) = @_;
112
113	for my $cmd (@{ $command{$name} }) {
114	$cmd->[1]->($obj, $params);
115	}	824	}
116		825
117	-1	826	warn sprintf "loading %s (%d)\n",
		827	$filename, length $data, scalar @{$av || []};#d#
		828	return ($data, $av);
118	}	829	}
		830
		831	#############################################################################
		832	# command handling &c
		833
		834	=item cf::register_command $name => \&callback($ob,$args);
		835
		836	Register a callback for execution when the client sends the user command
		837	$name.
		838
		839	=cut
119		840
120	sub register_command {	841	sub register_command {
121	my ($name, $time, $cb) = @_;	842	my ($name, $cb) = @_;
122		843
123	my $caller = caller;	844	my $caller = caller;
124	#warn "registering command '$name/$time' to '$caller'";	845	#warn "registering command '$name/$time' to '$caller'";
125		846
126	push @{ $command{$name} }, [$time, $cb, $caller];	847	push @{ $COMMAND{$name} }, [$caller, $cb];
127	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @{ $command{$name} };
128	}	848	}
		849
		850	=item cf::register_extcmd $name => \&callback($pl,$packet);
		851
		852	Register a callbackf ro execution when the client sends an extcmd packet.
		853
		854	If the callback returns something, it is sent back as if reply was being
		855	called.
		856
		857	=cut
129		858
130	sub register_extcmd {	859	sub register_extcmd {
131	my ($name, $cb) = @_;	860	my ($name, $cb) = @_;
132		861
133	my $caller = caller;	862	$EXTCMD{$name} = $cb;
134	#warn "registering extcmd '$name' to '$caller'";
135
136	$extcmd{$name} = [$cb, $caller];
137	}	863	}
138		864
139	sub register {	865	cf::player->attach (
140	my ($base, $pkg) = @_;	866	on_command => sub {
		867	my ($pl, $name, $params) = @_;
141		868
142	for my $idx (0 .. $#EVENT) {	869	my $cb = $COMMAND{$name}
143	if (my $ref = $pkg->can ("on_$EVENT[$idx]")) {	870	or return;
144	#warn "registering $EVENT[$idx] hook to '$pkg'\n";	871
145	$hook[$idx]{$base} = $ref;	872	for my $cmd (@$cb) {
		873	$cmd->[1]->($pl->ob, $params);
146	}	874	}
		875
		876	cf::override;
147	}	877	},
148	}	878	on_extcmd => sub {
		879	my ($pl, $buf) = @_;
		880
		881	my $msg = eval { from_json $buf };
		882
		883	if (ref $msg) {
		884	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
		885	if (my %reply = $cb->($pl, $msg)) {
		886	$pl->ext_reply ($msg->{msgid}, %reply);
		887	}
		888	}
		889	} else {
		890	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
		891	}
		892
		893	cf::override;
		894	},
		895	);
149		896
150	sub load_extension {	897	sub load_extension {
151	my ($path) = @_;	898	my ($path) = @_;
152		899
153	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	900	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
154	my $base = $1;	901	my $base = $1;
155	my $pkg = $1;	902	my $pkg = $1;
156	$pkg =~ s/[^[:word:]]/_/g;	903	$pkg =~ s/[^[:word:]]/_/g;
157	$pkg = "cf::ext::$pkg";	904	$pkg = "ext::$pkg";
158		905
159	warn "loading '$path' into '$pkg'\n";	906	warn "... loading '$path' into '$pkg'\n";
160		907
161	open my $fh, "<:utf8", $path	908	open my $fh, "<:utf8", $path
162	or die "$path: $!";	909	or die "$path: $!";
163		910
164	my $source =	911	my $source =
165	"package $pkg; use strict; use utf8;\n"	912	"package $pkg; use strict; use utf8;\n"
166	. "#line 1 \"$path\"\n{\n"	913	. "#line 1 \"$path\"\n{\n"
167	. (do { local $/; <$fh> })	914	. (do { local $/; <$fh> })
168	. "\n};\n1";	915	. "\n};\n1";
169		916
170	eval $source	917	unless (eval $source) {
171	or die "$path: $@";	918	my $msg = $@ ? "$path: $@\n"
		919	: "extension disabled.\n";
		920	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
		921	warn $@;
		922	warn "mandatory extension failed to load, exiting.\n";
		923	exit 1;
		924	}
		925	die $@;
		926	}
172		927
173	push @exts, $pkg;	928	push @EXTS, $pkg;
174	$ext_pkg{$base} = $pkg;
175
176	# no strict 'refs';
177	# @{"$pkg\::ISA"} = ext::;
178
179	register $base, $pkg;
180	}
181
182	sub unload_extension {
183	my ($pkg) = @_;
184
185	warn "removing extension $pkg\n";
186
187	# remove hooks
188	for my $idx (0 .. $#EVENT) {
189	delete $hook[$idx]{$pkg};
190	}
191
192	# remove commands
193	for my $name (keys %command) {
194	my @cb = grep $_->[2] ne $pkg, @{ $command{$name} };
195
196	if (@cb) {
197	$command{$name} = \@cb;
198	$COMMAND{"$name\000"} = List::Util::max map $_->[0], @cb;
199	} else {
200	delete $command{$name};
201	delete $COMMAND{"$name\000"};
202	}
203	}
204
205	# remove extcmds
206	for my $name (grep $extcmd{$_}[1] eq $pkg, keys %extcmd) {
207	delete $extcmd{$name};
208	}
209
210	if (my $cb = $pkg->can ("on_unload")) {
211	eval {
212	$cb->($pkg);
213	1
214	} or warn "$pkg unloaded, but with errors: $@";
215	}
216
217	Symbol::delete_package $pkg;
218	}	929	}
219		930
220	sub load_extensions {	931	sub load_extensions {
221	my $LIBDIR = maps_directory "perl";
222
223	for my $ext (<$LIBDIR/*.ext>) {	932	for my $ext (<$LIBDIR/*.ext>) {
224	next unless -r $ext;	933	next unless -r $ext;
225	eval {	934	eval {
226	load_extension $ext;	935	load_extension $ext;
227	1	936	1
228	} or warn "$ext not loaded: $@";	937	} or warn "$ext not loaded: $@";
229	}	938	}
230	}	939	}
231		940
232	register_command "perl-reload", 0, sub {	941	#############################################################################
		942
		943	=head2 CORE EXTENSIONS
		944
		945	Functions and methods that extend core crossfire objects.
		946
		947	=cut
		948
		949	package cf::player;
		950
		951	use Coro::AIO;
		952
		953	=head3 cf::player
		954
		955	=over 4
		956
		957	=item cf::player::find $login
		958
		959	Returns the given player object, loading it if necessary (might block).
		960
		961	=cut
		962
		963	sub playerdir($) {
		964	cf::localdir
		965	. "/"
		966	. cf::playerdir
		967	. "/"
		968	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		969	}
		970
		971	sub path($) {
		972	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		973
		974	(playerdir $login) . "/$login.pl"
		975	}
		976
		977	sub find_active($) {
		978	$cf::PLAYER{$_[0]}
		979	and $cf::PLAYER{$_[0]}->active
		980	and $cf::PLAYER{$_[0]}
		981	}
		982
		983	sub exists($) {
		984	my ($login) = @_;
		985
		986	$cf::PLAYER{$login}
		987	or cf::sync_job { !aio_stat path $login }
		988	}
		989
		990	sub find($) {
		991	return $cf::PLAYER{$_[0]} || do {
		992	my $login = $_[0];
		993
		994	my $guard = cf::lock_acquire "user_find:$login";
		995
		996	$cf::PLAYER{$_[0]} || do {
		997	my $pl = load_pl path $login
		998	or return;
		999	$cf::PLAYER{$login} = $pl
		1000	}
		1001	}
		1002	}
		1003
		1004	sub save($) {
		1005	my ($pl) = @_;
		1006
		1007	return if $pl->{deny_save};
		1008
		1009	my $path = path $pl;
		1010	my $guard = cf::lock_acquire "user_save:$path";
		1011
		1012	return if $pl->{deny_save};
		1013
		1014	aio_mkdir playerdir $pl, 0770;
		1015	$pl->{last_save} = $cf::RUNTIME;
		1016
		1017	$pl->save_pl ($path);
		1018	Coro::cede;
		1019	}
		1020
		1021	sub new($) {
		1022	my ($login) = @_;
		1023
		1024	my $self = create;
		1025
		1026	$self->ob->name ($login);
		1027	$self->{deny_save} = 1;
		1028
		1029	$cf::PLAYER{$login} = $self;
		1030
		1031	$self
		1032	}
		1033
		1034	=item $pl->quit_character
		1035
		1036	Nukes the player without looking back. If logged in, the connection will
		1037	be destroyed. May block for a long time.
		1038
		1039	=cut
		1040
		1041	sub quit_character {
		1042	my ($pl) = @_;
		1043
		1044	$pl->{deny_save} = 1;
		1045	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1046
		1047	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1048	$pl->deactivate;
		1049	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1050	$pl->ns->destroy if $pl->ns;
		1051
		1052	my $path = playerdir $pl;
		1053	my $temp = "$path~$cf::RUNTIME~deleting~";
		1054	aio_rename $path, $temp;
		1055	delete $cf::PLAYER{$pl->ob->name};
		1056	$pl->destroy;
		1057	IO::AIO::aio_rmtree $temp;
		1058	}
		1059
		1060	=item cf::player::list_logins
		1061
		1062	Returns am arrayref of all valid playernames in the system, can take a
		1063	while and may block, so not sync_job-capable, ever.
		1064
		1065	=cut
		1066
		1067	sub list_logins {
		1068	my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir
		1069	or return [];
		1070
		1071	my @logins;
		1072
		1073	for my $login (@$dirs) {
		1074	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1075	aio_read $fh, 0, 512, my $buf, 0 or next;
		1076	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1077
		1078	utf8::decode $login;
		1079	push @logins, $login;
		1080	}
		1081
		1082	\@logins
		1083	}
		1084
		1085	=item $player->maps
		1086
		1087	Returns an arrayref of map paths that are private for this
		1088	player. May block.
		1089
		1090	=cut
		1091
		1092	sub maps($) {
		1093	my ($pl) = @_;
		1094
		1095	$pl = ref $pl ? $pl->ob->name : $pl;
		1096
		1097	my $files = aio_readdir playerdir $pl
		1098	or return;
		1099
		1100	my @paths;
		1101
		1102	for (@$files) {
		1103	utf8::decode $_;
		1104	next if /\.(?:pl|pst)$/;
		1105	next unless /^$PATH_SEP/o;
		1106
		1107	push @paths, cf::map::normalise "~$pl/$_";
		1108	}
		1109
		1110	\@paths
		1111	}
		1112
		1113	=item $player->ext_reply ($msgid, $msgtype, %msg)
		1114
		1115	Sends an ext reply to the player.
		1116
		1117	=cut
		1118
		1119	sub ext_reply($$$%) {
		1120	my ($self, $id, %msg) = @_;
		1121
		1122	$msg{msgid} = $id;
		1123
		1124	$self->send ("ext " . cf::to_json \%msg);
		1125	}
		1126
		1127	package cf;
		1128
		1129	=back
		1130
		1131
		1132	=head3 cf::map
		1133
		1134	=over 4
		1135
		1136	=cut
		1137
		1138	package cf::map;
		1139
		1140	use Fcntl;
		1141	use Coro::AIO;
		1142
		1143	use overload
		1144	'""' => \&as_string,
		1145	fallback => 1;
		1146
		1147	our $MAX_RESET = 3600;
		1148	our $DEFAULT_RESET = 3000;
		1149
		1150	sub generate_random_map {
		1151	my ($self, $rmp) = @_;
		1152	# mit "rum" bekleckern, nicht
		1153	$self->_create_random_map (
		1154	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1155	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1156	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1157	$rmp->{exit_on_final_map},
		1158	$rmp->{xsize}, $rmp->{ysize},
		1159	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1160	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1161	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1162	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1163	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1164	(cf::region::find $rmp->{region}), $rmp->{custom}
		1165	)
		1166	}
		1167
		1168	=item cf::map->register ($regex, $prio)
		1169
		1170	Register a handler for the map path matching the given regex at the
		1171	givne priority (higher is better, built-in handlers have priority 0, the
		1172	default).
		1173
		1174	=cut
		1175
		1176	sub register {
		1177	my (undef, $regex, $prio) = @_;
		1178	my $pkg = caller;
		1179
		1180	no strict;
		1181	push @{"$pkg\::ISA"}, __PACKAGE__;
		1182
		1183	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1184	}
		1185
		1186	# also paths starting with '/'
		1187	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1188
		1189	sub thawer_merge {
		1190	my ($self, $merge) = @_;
		1191
		1192	# we have to keep some variables in memory intact
		1193	local $self->{path};
		1194	local $self->{load_path};
		1195	local $self->{deny_save};
		1196	local $self->{deny_reset};
		1197
		1198	$self->SUPER::thawer_merge ($merge);
		1199	}
		1200
		1201	sub normalise {
233	my ($who, $arg) = @_;	1202	my ($path, $base) = @_;
234		1203
235	if ($who->flag (FLAG_WIZ)) {	1204	$path = "$path"; # make sure its a string
236	$who->message ("reloading...");
237		1205
238	warn "reloading...\n";	1206	$path =~ s/\.map$//;
239	eval {
240	# 1. cancel all watchers
241	$_->cancel for Event::all_watchers;
242		1207
243	# 2. unload all extensions	1208	# map plan:
		1209	#
		1210	# /! non-realised random map exit (special hack!)
		1211	# {... are special paths that are not being touched
		1212	# ?xxx/... are special absolute paths
		1213	# ?random/... random maps
		1214	# /... normal maps
		1215	# ~user/... per-player map of a specific user
		1216
		1217	$path =~ s/$PATH_SEP/\//go;
		1218
		1219	# treat it as relative path if it starts with
		1220	# something that looks reasonable
		1221	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1222	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1223
		1224	$base =~ s{[^/]+/?$}{};
		1225	$path = "$base/$path";
		1226	}
		1227
		1228	for ($path) {
		1229	redo if s{//}{/};
		1230	redo if s{/\.?/}{/};
		1231	redo if s{/[^/]+/\.\./}{/};
		1232	}
		1233
		1234	$path
		1235	}
		1236
		1237	sub new_from_path {
		1238	my (undef, $path, $base) = @_;
		1239
		1240	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1241
		1242	$path = normalise $path, $base;
		1243
		1244	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1245	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1246	my $self = bless cf::map::new, $pkg;
		1247	$self->{path} = $path; $self->path ($path);
		1248	$self->init; # pass $1 etc.
		1249	return $self;
		1250	}
		1251	}
		1252
		1253	Carp::carp "unable to resolve path '$path' (base '$base').";
		1254	()
		1255	}
		1256
		1257	sub init {
		1258	my ($self) = @_;
		1259
		1260	$self
		1261	}
		1262
		1263	sub as_string {
		1264	my ($self) = @_;
		1265
		1266	"$self->{path}"
		1267	}
		1268
		1269	# the displayed name, this is a one way mapping
		1270	sub visible_name {
		1271	&as_string
		1272	}
		1273
		1274	# the original (read-only) location
		1275	sub load_path {
		1276	my ($self) = @_;
		1277
		1278	sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path}
		1279	}
		1280
		1281	# the temporary/swap location
		1282	sub save_path {
		1283	my ($self) = @_;
		1284
		1285	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1286	sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path
		1287	}
		1288
		1289	# the unique path, undef == no special unique path
		1290	sub uniq_path {
		1291	my ($self) = @_;
		1292
		1293	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1294	sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path
		1295	}
		1296
		1297	# and all this just because we cannot iterate over
		1298	# all maps in C++...
		1299	sub change_all_map_light {
		1300	my ($change) = @_;
		1301
		1302	$_->change_map_light ($change)
		1303	for grep $_->outdoor, values %cf::MAP;
		1304	}
		1305
		1306	sub unlink_save {
		1307	my ($self) = @_;
		1308
		1309	utf8::encode (my $save = $self->save_path);
		1310	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1311	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1312
		1313	#d#TODO remove .map and also nuke
		1314	$save =~ s/\.map// or return;#d#
		1315	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
		1316	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
		1317	}
		1318
		1319	sub load_header_from($) {
		1320	my ($self, $path) = @_;
		1321
		1322	utf8::encode $path;
		1323	#aio_open $path, O_RDONLY, 0
		1324	# or return;
		1325
		1326	$self->_load_header ($path)
		1327	or return;
		1328
		1329	$self->{load_path} = $path;
		1330
		1331	1
		1332	}
		1333
		1334	sub load_header_orig {
		1335	my ($self) = @_;
		1336
		1337	$self->load_header_from ($self->load_path)
		1338	}
		1339
		1340	sub load_header_temp {
		1341	my ($self) = @_;
		1342
		1343	$self->load_header_from ($self->save_path)
		1344	}
		1345
		1346	sub prepare_temp {
		1347	my ($self) = @_;
		1348
		1349	$self->last_access ((delete $self->{last_access})
		1350	|| $cf::RUNTIME); #d#
		1351	# safety
		1352	$self->{instantiate_time} = $cf::RUNTIME
		1353	if $self->{instantiate_time} > $cf::RUNTIME;
		1354	}
		1355
		1356	sub prepare_orig {
		1357	my ($self) = @_;
		1358
		1359	$self->{load_original} = 1;
		1360	$self->{instantiate_time} = $cf::RUNTIME;
		1361	$self->last_access ($cf::RUNTIME);
		1362	$self->instantiate;
		1363	}
		1364
		1365	sub load_header {
		1366	my ($self) = @_;
		1367
		1368	if ($self->load_header_temp) {
		1369	$self->prepare_temp;
		1370	} else {
		1371	$self->load_header_orig
		1372	or return;
		1373	$self->prepare_orig;
		1374	}
		1375
		1376	1
		1377	}
		1378
		1379	sub find;
		1380	sub find {
		1381	my ($path, $origin) = @_;
		1382
		1383	$path = normalise $path, $origin && $origin->path;
		1384
		1385	cf::lock_wait "map_find:$path";
		1386
		1387	$cf::MAP{$path} || do {
		1388	my $guard = cf::lock_acquire "map_find:$path";
		1389	my $map = new_from_path cf::map $path
		1390	or return;
		1391
		1392	$map->{last_save} = $cf::RUNTIME;
		1393
		1394	$map->load_header
		1395	or return;
		1396
		1397	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1398	# doing this can freeze the server in a sync job, obviously
		1399	#$cf::WAIT_FOR_TICK->wait;
		1400	$map->reset;
		1401	undef $guard;
		1402	return find $path;
		1403	}
		1404
		1405	$cf::MAP{$path} = $map
		1406	}
		1407	}
		1408
		1409	sub pre_load { }
		1410	sub post_load { }
		1411
		1412	sub load {
		1413	my ($self) = @_;
		1414
		1415	local $self->{deny_reset} = 1; # loading can take a long time
		1416
		1417	my $path = $self->{path};
		1418	my $guard = cf::lock_acquire "map_load:$path";
		1419
		1420	return if $self->in_memory != cf::MAP_SWAPPED;
		1421
		1422	$self->in_memory (cf::MAP_LOADING);
		1423
		1424	$self->alloc;
		1425
		1426	$self->pre_load;
		1427
		1428	$self->_load_objects ($self->{load_path}, 1)
		1429	or return;
		1430
		1431	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1432	if delete $self->{load_original};
		1433
		1434	if (my $uniq = $self->uniq_path) {
		1435	utf8::encode $uniq;
		1436	if (aio_open $uniq, O_RDONLY, 0) {
		1437	$self->clear_unique_items;
		1438	$self->_load_objects ($uniq, 0);
		1439	}
		1440	}
		1441
		1442	Coro::cede;
		1443
		1444	# now do the right thing for maps
		1445	$self->link_multipart_objects;
		1446
		1447	unless ($self->{deny_activate}) {
		1448	$self->decay_objects;
		1449	$self->fix_auto_apply;
		1450	$self->update_buttons;
		1451	Coro::cede;
		1452	$self->set_darkness_map;
		1453	$self->difficulty ($self->estimate_difficulty)
		1454	unless $self->difficulty;
		1455	Coro::cede;
		1456	$self->activate;
		1457	}
		1458
		1459	$self->post_load;
		1460
		1461	$self->in_memory (cf::MAP_IN_MEMORY);
		1462	}
		1463
		1464	sub customise_for {
		1465	my ($self, $ob) = @_;
		1466
		1467	return find "~" . $ob->name . "/" . $self->{path}
		1468	if $self->per_player;
		1469
		1470	$self
		1471	}
		1472
		1473	# find and load all maps in the 3x3 area around a map
		1474	sub load_diag {
		1475	my ($map) = @_;
		1476
		1477	my @diag; # diagonal neighbours
		1478
		1479	for (0 .. 3) {
		1480	my $neigh = $map->tile_path ($_)
244	for (@exts) {	1481	or next;
245	$who->message ("unloading <$_>");	1482	$neigh = find $neigh, $map
246	unload_extension $_;	1483	or next;
		1484	$neigh->load;
		1485
		1486	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1487	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1488	}
		1489
		1490	for (@diag) {
		1491	my $neigh = find @$_
		1492	or next;
		1493	$neigh->load;
		1494	}
		1495	}
		1496
		1497	sub find_sync {
		1498	my ($path, $origin) = @_;
		1499
		1500	cf::sync_job { find $path, $origin }
		1501	}
		1502
		1503	sub do_load_sync {
		1504	my ($map) = @_;
		1505
		1506	cf::sync_job { $map->load };
		1507	}
		1508
		1509	our %MAP_PREFETCH;
		1510	our $MAP_PREFETCHER = undef;
		1511
		1512	sub find_async {
		1513	my ($path, $origin) = @_;
		1514
		1515	$path = normalise $path, $origin && $origin->{path};
		1516
		1517	if (my $map = $cf::MAP{$path}) {
		1518	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1519	}
		1520
		1521	undef $MAP_PREFETCH{$path};
		1522	$MAP_PREFETCHER ||= cf::async {
		1523	while (%MAP_PREFETCH) {
		1524	for my $path (keys %MAP_PREFETCH) {
		1525	my $map = find $path
		1526	or next;
		1527	$map->load;
		1528
		1529	delete $MAP_PREFETCH{$path};
247	}	1530	}
248
249	# 3. unload all modules loaded from $LIBDIR
250	while (my ($k, $v) = each %INC) {
251	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
252
253	$who->message ("removing <$k>");
254	delete $INC{$k};
255
256	$k =~ s/\.pm$//;
257	$k =~ s/\//::/g;
258
259	if (my $cb = $k->can ("unload_module")) {
260	$cb->();
261	}
262
263	Symbol::delete_package $k;
264	}
265
266	# 4. get rid of ext::, as good as possible
267	Symbol::delete_package "ext::$_"
268	for qw(cf::object cf::object::map cf::object::player cf::player cf::map cf::party cf::region);
269
270	# 5. remove register_script_function callbacks
271	# TODO
272
273	# 6. unload cf.pm "a bit"
274	delete $INC{"cf.pm"};
275
276	# don't, removes xs symbols, too
277	#Symbol::delete_package __PACKAGE__;
278
279	# 7. reload cf.pm
280	$who->message ("reloading cf.pm");
281	require cf;
282	};	1531	}
283	warn $@ if $@;	1532	undef $MAP_PREFETCHER;
284	$who->message ($@) if $@;	1533	};
285	warn "reloaded\n";	1534	$MAP_PREFETCHER->prio (6);
286		1535
287	$who->message ("reloaded");	1536	()
		1537	}
		1538
		1539	sub save {
		1540	my ($self) = @_;
		1541
		1542	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1543
		1544	$self->{last_save} = $cf::RUNTIME;
		1545
		1546	return unless $self->dirty;
		1547
		1548	my $save = $self->save_path; utf8::encode $save;
		1549	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1550
		1551	$self->{load_path} = $save;
		1552
		1553	return if $self->{deny_save};
		1554
		1555	local $self->{last_access} = $self->last_access;#d#
		1556
		1557	cf::async {
		1558	$_->contr->save for $self->players;
		1559	};
		1560
		1561	if ($uniq) {
		1562	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1563	$self->_save_objects ($uniq, cf::IO_UNIQUES);
288	} else {	1564	} else {
289	$who->message ("Intruder Alert!");	1565	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
290	}
291	};
292
293	#############################################################################
294	# utility functions
295
296	use JSON::Syck (); # TODO# replace by JSON::PC once working
297
298	sub from_json($) {
299	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
300	JSON::Syck::Load $_[0]
301	}
302
303	sub to_json($) {
304	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
305	JSON::Syck::Dump $_[0]
306	}
307
308	#############################################################################
309	# extcmd framework, basically convert ext <msg>
310	# into pkg::->on_extcmd_arg1 (...) while shortcutting a few
311
312	sub on_extcmd {
313	my ($pl, $buf) = @_;
314
315	my $msg = eval { from_json $buf };
316
317	if (ref $msg) {
318	if (my $cb = $extcmd{$msg->{msgtype}}) {
319	if (my %reply = $cb->[0]->($pl, $msg)) {
320	$pl->ext_reply ($msg->{msgid}, %reply);
321	}
322	}
323	} else {
324	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
325	}
326
327	1	1566	}
328	}	1567	}
329		1568
330	#############################################################################	1569	sub swap_out {
331	# load/save/clean perl data associated with a map
332
333	*on_mapclean = sub {
334	my ($map) = @_;	1570	my ($self) = @_;
335		1571
336	my $path = $map->tmpname;	1572	# save first because save cedes
337	defined $path or return;	1573	$self->save;
338		1574
339	unlink "$path.cfperl";	1575	my $lock = cf::lock_acquire "map_data:" . $self->path;
340	};
341		1576
342	*on_mapin =	1577	return if $self->players;
343	*on_mapload = sub {	1578	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1579	return if $self->{deny_save};
		1580
		1581	$self->clear;
		1582	$self->in_memory (cf::MAP_SWAPPED);
		1583	}
		1584
		1585	sub reset_at {
344	my ($map) = @_;	1586	my ($self) = @_;
345		1587
346	my $path = $map->tmpname;	1588	# TODO: safety, remove and allow resettable per-player maps
347	$path = $map->path unless defined $path;	1589	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1590	return 1e99 if $self->{deny_reset};
348		1591
349	open my $fh, "<:raw", "$path.cfperl"	1592	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
350	or return; # no perl data	1593	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
351		1594
352	my $data = Storable::thaw do { local $/; <$fh> };	1595	$time + $to
		1596	}
353		1597
354	$data->{version} <= 1	1598	sub should_reset {
355	or return; # too new
356
357	$map->_set_obs ($data->{obs});
358	};
359
360	*on_mapout = sub {
361	my ($map) = @_;	1599	my ($self) = @_;
362		1600
363	my $path = $map->tmpname;	1601	$self->reset_at <= $cf::RUNTIME
364	$path = $map->path unless defined $path;
365
366	my $obs = $map->_get_obs;
367
368	if (defined $obs) {
369	open my $fh, ">:raw", "$path.cfperl"
370	or die "$path.cfperl: $!";
371
372	stat $path;
373
374	print $fh Storable::nfreeze {
375	size => (stat _)[7],
376	time => (stat _)[9],
377	version => 1,
378	obs => $obs,
379	};
380
381	chmod SAVE_MODE, "$path.cfperl"; # very racy, but cf-compatible *g*
382	} else {
383	unlink "$path.cfperl";
384	}
385	};
386
387	#############################################################################
388	# load/save perl data associated with player->ob objects
389
390	sub all_objects(@) {
391	@_, map all_objects ($_->inv), @_
392	}	1602	}
393		1603
394	*on_player_load = sub {	1604	sub reset {
395	my ($ob, $path) = @_;	1605	my ($self) = @_;
396		1606
397	for my $o (all_objects $ob) {	1607	my $lock = cf::lock_acquire "map_data:$self->{path}";
398	if (my $value = $o->get_ob_key_value ("_perl_data")) {
399	$o->set_ob_key_value ("_perl_data");
400		1608
401	%$o = %{ Storable::thaw pack "H*", $value };	1609	return if $self->players;
402	}	1610	return if $self->isa ("ext::map_per_player");#d#
403	}
404	};
405		1611
406	*on_player_save = sub {	1612	warn "resetting map ", $self->path;#d#
407	my ($ob, $path) = @_;
408		1613
409	$_->set_ob_key_value (_perl_data => unpack "H*", Storable::nfreeze $_)	1614	delete $cf::MAP{$self->path};
410	for grep %$_, all_objects $ob;
411	};
412		1615
413	#############################################################################	1616	$self->in_memory (cf::MAP_SWAPPED);
414	# core extensions - in perl	1617	$self->clear;
415		1618
416	=item cf::player::exists $login	1619	$_->clear_links_to ($self) for values %cf::MAP;
417		1620
418	Returns true when the given account exists.	1621	$self->unlink_save;
419		1622	$self->destroy;
420	=cut
421
422	sub cf::player::exists($) {
423	cf::player::find $_[0]
424	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;
425	}	1623	}
426		1624
		1625	my $nuke_counter = "aaaa";
		1626
		1627	sub nuke {
		1628	my ($self) = @_;
		1629
		1630	delete $cf::MAP{$self->path};
		1631
		1632	$self->unlink_save;
		1633
		1634	bless $self, "cf::map";
		1635	delete $self->{deny_reset};
		1636	$self->{deny_save} = 1;
		1637	$self->reset_timeout (1);
		1638	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1639
		1640	$cf::MAP{$self->path} = $self;
		1641
		1642	$self->reset; # polite request, might not happen
		1643	}
		1644
		1645	=item cf::map::unique_maps
		1646
		1647	Returns an arrayref of paths of all shared maps that have
		1648	instantiated unique items. May block.
		1649
		1650	=cut
		1651
		1652	sub unique_maps() {
		1653	my $files = aio_readdir cf::localdir . "/" . cf::uniquedir
		1654	or return;
		1655
		1656	my @paths;
		1657
		1658	for (@$files) {
		1659	utf8::decode $_;
		1660	next if /\.pst$/;
		1661	next unless /^$PATH_SEP/o;
		1662
		1663	push @paths, cf::map::normalise $_;
		1664	}
		1665
		1666	\@paths
		1667	}
		1668
		1669	package cf;
		1670
		1671	=back
		1672
		1673	=head3 cf::object
		1674
		1675	=cut
		1676
		1677	package cf::object;
		1678
		1679	=over 4
		1680
		1681	=item $ob->inv_recursive
		1682
		1683	Returns the inventory of the object _and_ their inventories, recursively.
		1684
		1685	=cut
		1686
		1687	sub inv_recursive_;
		1688	sub inv_recursive_ {
		1689	map { $_, inv_recursive_ $_->inv } @_
		1690	}
		1691
		1692	sub inv_recursive {
		1693	inv_recursive_ inv $_[0]
		1694	}
		1695
		1696	package cf;
		1697
		1698	=back
		1699
		1700	=head3 cf::object::player
		1701
		1702	=over 4
		1703
427	=item $player->reply ($npc, $msg[, $flags])	1704	=item $player_object->reply ($npc, $msg[, $flags])
428		1705
429	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>	1706	Sends a message to the player, as if the npc C<$npc> replied. C<$npc>
430	can be C<undef>. Does the right thing when the player is currently in a	1707	can be C<undef>. Does the right thing when the player is currently in a
431	dialogue with the given NPC character.	1708	dialogue with the given NPC character.
432		1709
433	=cut	1710	=cut
434		1711
435	# rough implementation of a future "reply" method that works	1712	# rough implementation of a future "reply" method that works
436	# with dialog boxes.	1713	# with dialog boxes.
		1714	#TODO: the first argument must go, split into a $npc->reply_to ( method
437	sub cf::object::player::reply($$$;$) {	1715	sub cf::object::player::reply($$$;$) {
438	my ($self, $npc, $msg, $flags) = @_;	1716	my ($self, $npc, $msg, $flags) = @_;
439		1717
440	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	1718	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
441		1719
…		…
445	$msg = $npc->name . " says: $msg" if $npc;	1723	$msg = $npc->name . " says: $msg" if $npc;
446	$self->message ($msg, $flags);	1724	$self->message ($msg, $flags);
447	}	1725	}
448	}	1726	}
449		1727
450	=item $player->ext_reply ($msgid, $msgtype, %msg)	1728	=item $player_object->may ("access")
451		1729
452	Sends an ext reply to the player.	1730	Returns wether the given player is authorized to access resource "access"
		1731	(e.g. "command_wizcast").
453		1732
454	=cut	1733	=cut
455		1734
456	sub cf::player::ext_reply($$$%) {	1735	sub cf::object::player::may {
		1736	my ($self, $access) = @_;
		1737
		1738	$self->flag (cf::FLAG_WIZ) ||
		1739	(ref $cf::CFG{"may_$access"}
		1740	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
		1741	: $cf::CFG{"may_$access"})
		1742	}
		1743
		1744	=item $player_object->enter_link
		1745
		1746	Freezes the player and moves him/her to a special map (C<{link}>).
		1747
		1748	The player should be reasonably safe there for short amounts of time. You
		1749	I<MUST> call C<leave_link> as soon as possible, though.
		1750
		1751	Will never block.
		1752
		1753	=item $player_object->leave_link ($map, $x, $y)
		1754
		1755	Moves the player out of the special C<{link}> map onto the specified
		1756	map. If the map is not valid (or omitted), the player will be moved back
		1757	to the location he/she was before the call to C<enter_link>, or, if that
		1758	fails, to the emergency map position.
		1759
		1760	Might block.
		1761
		1762	=cut
		1763
		1764	sub link_map {
		1765	unless ($LINK_MAP) {
		1766	$LINK_MAP = cf::map::find "{link}"
		1767	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1768	$LINK_MAP->load;
		1769	}
		1770
		1771	$LINK_MAP
		1772	}
		1773
		1774	sub cf::object::player::enter_link {
		1775	my ($self) = @_;
		1776
		1777	$self->deactivate_recursive;
		1778
		1779	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1780
		1781	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1782	if $self->map;
		1783
		1784	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1785	}
		1786
		1787	sub cf::object::player::leave_link {
		1788	my ($self, $map, $x, $y) = @_;
		1789
		1790	my $link_pos = delete $self->{_link_pos};
		1791
		1792	unless ($map) {
		1793	# restore original map position
		1794	($map, $x, $y) = @{ $link_pos || [] };
		1795	$map = cf::map::find $map;
		1796
		1797	unless ($map) {
		1798	($map, $x, $y) = @$EMERGENCY_POSITION;
		1799	$map = cf::map::find $map
		1800	or die "FATAL: cannot load emergency map\n";
		1801	}
		1802	}
		1803
		1804	($x, $y) = (-1, -1)
		1805	unless (defined $x) && (defined $y);
		1806
		1807	# use -1 or undef as default coordinates, not 0, 0
		1808	($x, $y) = ($map->enter_x, $map->enter_y)
		1809	if $x <=0 && $y <= 0;
		1810
		1811	$map->load;
		1812	$map->load_diag;
		1813
		1814	return unless $self->contr->active;
		1815	$self->activate_recursive;
		1816	$self->enter_map ($map, $x, $y);
		1817	}
		1818
		1819	cf::player->attach (
		1820	on_logout => sub {
		1821	my ($pl) = @_;
		1822
		1823	# abort map switching before logout
		1824	if ($pl->ob->{_link_pos}) {
		1825	cf::sync_job {
		1826	$pl->ob->leave_link
		1827	};
		1828	}
		1829	},
		1830	on_login => sub {
		1831	my ($pl) = @_;
		1832
		1833	# try to abort aborted map switching on player login :)
		1834	# should happen only on crashes
		1835	if ($pl->ob->{_link_pos}) {
		1836	$pl->ob->enter_link;
		1837	(async {
		1838	# we need this sleep as the login has a concurrent enter_exit running
		1839	# and this sleep increases chances of the player not ending up in scorn
		1840	$pl->ob->reply (undef,
		1841	"There was an internal problem at your last logout, "
		1842	. "the server will try to bring you to your intended destination in a second.",
		1843	cf::NDI_RED);
		1844	Coro::Timer::sleep 1;
		1845	$pl->ob->leave_link;
		1846	})->prio (2);
		1847	}
		1848	},
		1849	);
		1850
		1851	=item $player_object->goto ($path, $x, $y)
		1852
		1853	=cut
		1854
		1855	sub cf::object::player::goto {
		1856	my ($self, $path, $x, $y) = @_;
		1857
		1858	$self->enter_link;
		1859
		1860	(async {
		1861	my $map = eval {
		1862	my $map = cf::map::find $path;
		1863	$map = $map->customise_for ($self) if $map;
		1864	$map
		1865	} or
		1866	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1867
		1868	$self->leave_link ($map, $x, $y);
		1869	})->prio (1);
		1870	}
		1871
		1872	=item $player_object->enter_exit ($exit_object)
		1873
		1874	=cut
		1875
		1876	sub parse_random_map_params {
		1877	my ($spec) = @_;
		1878
		1879	my $rmp = { # defaults
		1880	xsize => (cf::rndm 15, 40),
		1881	ysize => (cf::rndm 15, 40),
		1882	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		1883	#layout => string,
		1884	};
		1885
		1886	for (split /\n/, $spec) {
		1887	my ($k, $v) = split /\s+/, $_, 2;
		1888
		1889	$rmp->{lc $k} = $v if (length $k) && (length $v);
		1890	}
		1891
		1892	$rmp
		1893	}
		1894
		1895	sub prepare_random_map {
		1896	my ($exit) = @_;
		1897
		1898	my $guard = cf::lock_acquire "exit_prepare:$exit";
		1899
		1900	# all this does is basically replace the /! path by
		1901	# a new random map path (?random/...) with a seed
		1902	# that depends on the exit object
		1903
		1904	my $rmp = parse_random_map_params $exit->msg;
		1905
		1906	if ($exit->map) {
		1907	$rmp->{region} = $exit->region->name;
		1908	$rmp->{origin_map} = $exit->map->path;
		1909	$rmp->{origin_x} = $exit->x;
		1910	$rmp->{origin_y} = $exit->y;
		1911	}
		1912
		1913	$rmp->{random_seed} ||= $exit->random_seed;
		1914
		1915	my $data = cf::to_json $rmp;
		1916	my $md5 = Digest::MD5::md5_hex $data;
		1917	my $meta = "$cf::RANDOM_MAPS/$md5.meta";
		1918
		1919	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		1920	aio_write $fh, 0, (length $data), $data, 0;
		1921	undef $fh;
		1922	aio_rename "$meta~", $meta;
		1923
		1924	$exit->slaying ("?random/$md5");
		1925	$exit->msg (undef);
		1926	}
		1927	}
		1928
		1929	sub cf::object::player::enter_exit {
457	my ($self, $id, %msg) = @_;	1930	my ($self, $exit) = @_;
458		1931
459	$msg{msgid} = $id;	1932	return unless $self->type == cf::PLAYER;
460		1933
461	$self->send ("ext " . to_json \%msg);	1934	if ($exit->slaying eq "/!") {
462	}	1935	#TODO: this should de-fi-ni-te-ly not be a sync-job
		1936	cf::sync_job { prepare_random_map $exit };
		1937	}
463		1938
464	#############################################################################	1939	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
465	# map scripting support	1940	my $hp = $exit->stats->hp;
		1941	my $sp = $exit->stats->sp;
466		1942
		1943	$self->enter_link;
		1944
		1945	(async {
		1946	$self->deactivate_recursive; # just to be sure
		1947	unless (eval {
		1948	$self->goto ($slaying, $hp, $sp);
		1949
		1950	1;
		1951	}) {
		1952	$self->message ("Something went wrong deep within the crossfire server. "
		1953	. "I'll try to bring you back to the map you were before. "
		1954	. "Please report this to the dungeon master!",
		1955	cf::NDI_UNIQUE | cf::NDI_RED);
		1956
		1957	warn "ERROR in enter_exit: $@";
		1958	$self->leave_link;
		1959	}
		1960	})->prio (1);
		1961	}
		1962
		1963	=head3 cf::client
		1964
		1965	=over 4
		1966
		1967	=item $client->send_drawinfo ($text, $flags)
		1968
		1969	Sends a drawinfo packet to the client. Circumvents output buffering so
		1970	should not be used under normal circumstances.
		1971
		1972	=cut
		1973
		1974	sub cf::client::send_drawinfo {
		1975	my ($self, $text, $flags) = @_;
		1976
		1977	utf8::encode $text;
		1978	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);
		1979	}
		1980
		1981
		1982	=item $success = $client->query ($flags, "text", \&cb)
		1983
		1984	Queues a query to the client, calling the given callback with
		1985	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
		1986	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
		1987
		1988	Queries can fail, so check the return code. Or don't, as queries will become
		1989	reliable at some point in the future.
		1990
		1991	=cut
		1992
		1993	sub cf::client::query {
		1994	my ($self, $flags, $text, $cb) = @_;
		1995
		1996	return unless $self->state == ST_PLAYING
		1997	|| $self->state == ST_SETUP
		1998	|| $self->state == ST_CUSTOM;
		1999
		2000	$self->state (ST_CUSTOM);
		2001
		2002	utf8::encode $text;
		2003	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
		2004
		2005	$self->send_packet ($self->{query_queue}[0][0])
		2006	if @{ $self->{query_queue} } == 1;
		2007	}
		2008
		2009	cf::client->attach (
		2010	on_reply => sub {
		2011	my ($ns, $msg) = @_;
		2012
		2013	# this weird shuffling is so that direct followup queries
		2014	# get handled first
		2015	my $queue = delete $ns->{query_queue}
		2016	or return; # be conservative, not sure how that can happen, but we saw a crash here
		2017
		2018	(shift @$queue)->[1]->($msg);
		2019	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
		2020
		2021	push @{ $ns->{query_queue} }, @$queue;
		2022
		2023	if (@{ $ns->{query_queue} } == @$queue) {
		2024	if (@$queue) {
		2025	$ns->send_packet ($ns->{query_queue}[0][0]);
		2026	} else {
		2027	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
		2028	}
		2029	}
		2030	},
		2031	);
		2032
		2033	=item $client->async (\&cb)
		2034
		2035	Create a new coroutine, running the specified callback. The coroutine will
		2036	be automatically cancelled when the client gets destroyed (e.g. on logout,
		2037	or loss of connection).
		2038
		2039	=cut
		2040
		2041	sub cf::client::async {
		2042	my ($self, $cb) = @_;
		2043
		2044	my $coro = &Coro::async ($cb);
		2045
		2046	$coro->on_destroy (sub {
		2047	delete $self->{_coro}{$coro+0};
		2048	});
		2049
		2050	$self->{_coro}{$coro+0} = $coro;
		2051
		2052	$coro
		2053	}
		2054
		2055	cf::client->attach (
		2056	on_destroy => sub {
		2057	my ($ns) = @_;
		2058
		2059	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
		2060	},
		2061	);
		2062
		2063	=back
		2064
		2065
		2066	=head2 SAFE SCRIPTING
		2067
		2068	Functions that provide a safe environment to compile and execute
		2069	snippets of perl code without them endangering the safety of the server
		2070	itself. Looping constructs, I/O operators and other built-in functionality
		2071	is not available in the safe scripting environment, and the number of
		2072	functions and methods that can be called is greatly reduced.
		2073
		2074	=cut
		2075
467	our $safe = new Safe "ext";	2076	our $safe = new Safe "safe";
468	our $safe_hole = new Safe::Hole;	2077	our $safe_hole = new Safe::Hole;
469		2078
470	$SIG{FPE} = 'IGNORE';	2079	$SIG{FPE} = 'IGNORE';
471		2080
472	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));	2081	$safe->permit_only (Opcode::opset qw(:base_core :base_mem :base_orig :base_math sort time));
473		2082
474	# here we export the classes and methods available to script code	2083	# here we export the classes and methods available to script code
475		2084
		2085	=pod
		2086
		2087	The following fucntions and emthods are available within a safe environment:
		2088
		2089	cf::object contr pay_amount pay_player map
		2090	cf::object::player player
		2091	cf::player peaceful
		2092	cf::map trigger
		2093
		2094	=cut
		2095
476	for (	2096	for (
477	["cf::object" => qw(contr pay_amount pay_player)],	2097	["cf::object" => qw(contr pay_amount pay_player map)],
478	["cf::object::player" => qw(player)],	2098	["cf::object::player" => qw(player)],
479	["cf::player" => qw(peaceful)],	2099	["cf::player" => qw(peaceful)],
		2100	["cf::map" => qw(trigger)],
480	) {	2101	) {
481	no strict 'refs';	2102	no strict 'refs';
482	my ($pkg, @funs) = @$_;	2103	my ($pkg, @funs) = @$_;
483	*{"ext::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})	2104	*{"safe::$pkg\::$_"} = $safe_hole->wrap (\&{"$pkg\::$_"})
484	for @funs;	2105	for @funs;
485	}	2106	}
		2107
		2108	=over 4
		2109
		2110	=item @retval = safe_eval $code, [var => value, ...]
		2111
		2112	Compiled and executes the given perl code snippet. additional var/value
		2113	pairs result in temporary local (my) scalar variables of the given name
		2114	that are available in the code snippet. Example:
		2115
		2116	my $five = safe_eval '$first + $second', first => 1, second => 4;
		2117
		2118	=cut
486		2119
487	sub safe_eval($;@) {	2120	sub safe_eval($;@) {
488	my ($code, %vars) = @_;	2121	my ($code, %vars) = @_;
489		2122
490	my $qcode = $code;	2123	my $qcode = $code;
491	$qcode =~ s/"/‟/g; # not allowed in #line filenames	2124	$qcode =~ s/"/‟/g; # not allowed in #line filenames
492	$qcode =~ s/\n/\\n/g;	2125	$qcode =~ s/\n/\\n/g;
493		2126
494	local $_;	2127	local $_;
495	local @ext::cf::_safe_eval_args = values %vars;	2128	local @safe::cf::_safe_eval_args = values %vars;
496		2129
497	$code =	2130	my $eval =
498	"do {\n"	2131	"do {\n"
499	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"	2132	. "my (" . (join ",", map "\$$_", keys %vars) . ") = \@cf::_safe_eval_args;\n"
500	. "#line 0 \"{$qcode}\"\n"	2133	. "#line 0 \"{$qcode}\"\n"
501	. $code	2134	. $code
502	. "\n}"	2135	. "\n}"
503	;	2136	;
504		2137
505	sub_generation_inc;	2138	sub_generation_inc;
506	my @res = wantarray ? $safe->reval ($code) : scalar $safe->reval ($code);	2139	my @res = wantarray ? $safe->reval ($eval) : scalar $safe->reval ($eval);
507	sub_generation_inc;	2140	sub_generation_inc;
508		2141
		2142	if ($@) {
		2143	warn "$@";
		2144	warn "while executing safe code '$code'\n";
		2145	warn "with arguments " . (join " ", %vars) . "\n";
		2146	}
		2147
509	wantarray ? @res : $res[0]	2148	wantarray ? @res : $res[0]
510	}	2149	}
		2150
		2151	=item cf::register_script_function $function => $cb
		2152
		2153	Register a function that can be called from within map/npc scripts. The
		2154	function should be reasonably secure and should be put into a package name
		2155	like the extension.
		2156
		2157	Example: register a function that gets called whenever a map script calls
		2158	C<rent::overview>, as used by the C<rent> extension.
		2159
		2160	cf::register_script_function "rent::overview" => sub {
		2161	...
		2162	};
		2163
		2164	=cut
511		2165
512	sub register_script_function {	2166	sub register_script_function {
513	my ($fun, $cb) = @_;	2167	my ($fun, $cb) = @_;
514		2168
515	no strict 'refs';	2169	no strict 'refs';
516	*{"ext::$fun"} = $safe_hole->wrap ($cb);	2170	*{"safe::$fun"} = $safe_hole->wrap ($cb);
517	}	2171	}
		2172
		2173	=back
		2174
		2175	=cut
518		2176
519	#############################################################################	2177	#############################################################################
520	# the server's main()
521		2178
522	sub run {	2179	=head2 EXTENSION DATABASE SUPPORT
523	my $tick = MAX_TIME * 1e-6;	2180
		2181	Crossfire maintains a very simple database for extension use. It can
		2182	currently store anything that can be serialised using Storable, which
		2183	excludes objects.
		2184
		2185	The parameter C<$family> should best start with the name of the extension
		2186	using it, it should be unique.
		2187
		2188	=over 4
		2189
		2190	=item $value = cf::db_get $family => $key
		2191
		2192	Returns a single value from the database.
		2193
		2194	=item cf::db_put $family => $key => $value
		2195
		2196	Stores the given C<$value> in the family.
		2197
		2198	=cut
		2199
		2200	our $DB;
		2201
		2202	sub db_load() {
		2203	unless ($DB) {
		2204	$DB = BDB::db_create $DB_ENV;
		2205
		2206	cf::sync_job {
		2207	eval {
		2208	$DB->set_flags (BDB::CHKSUM);
		2209
		2210	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		2211	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		2212	cf::cleanup "db_open(db): $!" if $!;
		2213	};
		2214	cf::cleanup "db_open(db): $@" if $@;
		2215	};
		2216
		2217	my $path = cf::localdir . "/database.pst";
		2218	if (stat $path) {
		2219	cf::sync_job {
		2220	my $pst = Storable::retrieve $path;
		2221
		2222	cf::db_put (board => data => $pst->{board});
		2223	cf::db_put (guildrules => data => $pst->{guildrules});
		2224	cf::db_put (rent => balance => $pst->{rent}{balance});
		2225	BDB::db_env_txn_checkpoint $DB_ENV;
		2226
		2227	unlink $path;
		2228	};
		2229	}
		2230	}
		2231	}
		2232
		2233	sub db_get($$) {
		2234	my $key = "$_[0]/$_[1]";
		2235
		2236	cf::sync_job {
		2237	BDB::db_get $DB, undef, $key, my $data;
		2238
		2239	$! ? ()
		2240	: Compress::LZF::sthaw $data
		2241	}
		2242	}
		2243
		2244	sub db_put($$$) {
		2245	BDB::dbreq_pri 4;
		2246	BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
		2247	}
		2248
		2249	#############################################################################
		2250	# the server's init and main functions
		2251
		2252	sub load_resources {
		2253	load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir
		2254	or die "unable to load regions file\n";#d#
		2255	}
		2256
		2257	sub cfg_load {
		2258	open my $fh, "<:utf8", cf::confdir . "/config"
		2259	or return;
		2260
		2261	local $/;
		2262	*CFG = YAML::Syck::Load <$fh>;
		2263
		2264	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2265
		2266	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2267	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2268
		2269	if (exists $CFG{mlockall}) {
		2270	eval {
		2271	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2272	and die "WARNING: m(un)lockall failed: $!\n";
		2273	};
		2274	warn $@ if $@;
		2275	}
		2276	}
		2277
		2278	sub init {
		2279	load_resources;
		2280	}
		2281
		2282	sub main {
		2283	# we must not ever block the main coroutine
		2284	local $Coro::idle = sub {
		2285	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2286	(async {
		2287	Event::one_event;
		2288	})->prio (Coro::PRIO_MAX);
		2289	};
		2290
		2291	cfg_load;
		2292	db_load;
		2293	load_extensions;
		2294
		2295	$TICK_WATCHER->start;
		2296	Event::loop;
		2297	}
		2298
		2299	#############################################################################
		2300	# initialisation and cleanup
		2301
		2302	# install some emergency cleanup handlers
		2303	BEGIN {
		2304	for my $signal (qw(INT HUP TERM)) {
		2305	Event->signal (
		2306	reentrant => 0,
		2307	data => WF_AUTOCANCEL,
		2308	signal => $signal,
		2309	prio => 0,
		2310	cb => sub {
		2311	cf::cleanup "SIG$signal";
		2312	},
		2313	);
		2314	}
		2315	}
		2316
		2317	sub emergency_save() {
		2318	my $freeze_guard = cf::freeze_mainloop;
		2319
		2320	warn "enter emergency perl save\n";
		2321
		2322	cf::sync_job {
		2323	# use a peculiar iteration method to avoid tripping on perl
		2324	# refcount bugs in for. also avoids problems with players
		2325	# and maps saved/destroyed asynchronously.
		2326	warn "begin emergency player save\n";
		2327	for my $login (keys %cf::PLAYER) {
		2328	my $pl = $cf::PLAYER{$login} or next;
		2329	$pl->valid or next;
		2330	$pl->save;
		2331	}
		2332	warn "end emergency player save\n";
		2333
		2334	warn "begin emergency map save\n";
		2335	for my $path (keys %cf::MAP) {
		2336	my $map = $cf::MAP{$path} or next;
		2337	$map->valid or next;
		2338	$map->save;
		2339	}
		2340	warn "end emergency map save\n";
		2341
		2342	warn "begin emergency database checkpoint\n";
		2343	BDB::db_env_txn_checkpoint $DB_ENV;
		2344	warn "end emergency database checkpoint\n";
		2345	};
		2346
		2347	warn "leave emergency perl save\n";
		2348	}
		2349
		2350	sub reload() {
		2351	# can/must only be called in main
		2352	if ($Coro::current != $Coro::main) {
		2353	warn "can only reload from main coroutine";
		2354	return;
		2355	}
		2356
		2357	warn "reloading...";
		2358
		2359	warn "cancelling server ticker";
		2360	$TICK_WATCHER->cancel;
		2361
		2362	cf::emergency_save;
		2363
		2364	eval {
		2365	# if anything goes wrong in here, we should simply crash as we already saved
		2366
		2367	warn "cancelling all WF_AUTOCANCEL watchers";
		2368	for (Event::all_watchers) {
		2369	$_->cancel if $_->data & WF_AUTOCANCEL;
		2370	}
		2371
		2372	warn "syncing database to disk";
		2373	BDB::db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		2374
		2375	warn "flushing outstanding aio requests";
		2376	for (;;) {
		2377	BDB::flush;
		2378	IO::AIO::flush;
		2379	Coro::cede;
		2380	last unless IO::AIO::nreqs || BDB::nreqs;
		2381	warn "iterate...";
		2382	}
		2383
		2384	warn "cancelling all extension coros";
		2385	$_->cancel for values %EXT_CORO;
		2386	%EXT_CORO = ();
		2387
		2388	warn "removing commands";
		2389	%COMMAND = ();
		2390
		2391	warn "removing ext commands";
		2392	%EXTCMD = ();
		2393
		2394	warn "unloading/nuking all extensions";
		2395	for my $pkg (@EXTS) {
		2396	warn "... unloading $pkg";
		2397
		2398	if (my $cb = $pkg->can ("unload")) {
		2399	eval {
		2400	$cb->($pkg);
		2401	1
		2402	} or warn "$pkg unloaded, but with errors: $@";
		2403	}
		2404
		2405	warn "... nuking $pkg";
		2406	Symbol::delete_package $pkg;
		2407	}
		2408
		2409	warn "unloading all perl modules loaded from $LIBDIR";
		2410	while (my ($k, $v) = each %INC) {
		2411	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
		2412
		2413	warn "... unloading $k";
		2414	delete $INC{$k};
		2415
		2416	$k =~ s/\.pm$//;
		2417	$k =~ s/\//::/g;
		2418
		2419	if (my $cb = $k->can ("unload_module")) {
		2420	$cb->();
		2421	}
		2422
		2423	Symbol::delete_package $k;
		2424	}
		2425
		2426	warn "getting rid of safe::, as good as possible";
		2427	Symbol::delete_package "safe::$_"
		2428	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
		2429
		2430	warn "unloading cf.pm \"a bit\"";
		2431	delete $INC{"cf.pm"};
		2432
		2433	# don't, removes xs symbols, too,
		2434	# and global variables created in xs
		2435	#Symbol::delete_package __PACKAGE__;
		2436
		2437	warn "unload completed, starting to reload now";
		2438
		2439	warn "reloading cf.pm";
		2440	require cf;
		2441	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
		2442
		2443	warn "loading config and database again";
		2444	cf::cfg_load;
		2445	cf::db_load;
		2446
		2447	warn "loading extensions";
		2448	cf::load_extensions;
		2449
		2450	warn "reattaching attachments to objects/players";
		2451	_global_reattach;
		2452	warn "reattaching attachments to maps";
		2453	reattach $_ for values %MAP;
		2454
		2455	warn "loading reloadable resources";
		2456	load_resources;
		2457
		2458	warn "restarting server ticker";
		2459
		2460	$TICK_WATCHER->start;
		2461	};
		2462
		2463	if ($@) {
		2464	warn $@;
		2465	warn "error while reloading, exiting.";
		2466	exit 1;
		2467	}
		2468
		2469	warn "reloaded";
		2470	};
		2471
		2472	our $RELOAD_WATCHER; # used only during reload
		2473
		2474	register_command "reload" => sub {
		2475	my ($who, $arg) = @_;
		2476
		2477	if ($who->flag (FLAG_WIZ)) {
		2478	$who->message ("reloading server.");
		2479
		2480	# doing reload synchronously and two reloads happen back-to-back,
		2481	# coro crashes during coro_state_free->destroy here.
		2482
		2483	$RELOAD_WATCHER ||= Event->timer (
		2484	reentrant => 0,
		2485	after => 0,
		2486	data => WF_AUTOCANCEL,
		2487	cb => sub {
		2488	reload;
		2489	undef $RELOAD_WATCHER;
		2490	},
		2491	);
		2492	}
		2493	};
		2494
		2495	unshift @INC, $LIBDIR;
		2496
		2497	my $bug_warning = 0;
		2498
		2499	$TICK_WATCHER = Event->timer (
		2500	reentrant => 0,
		2501	parked => 1,
		2502	prio => 0,
		2503	at => $NEXT_TICK || $TICK,
		2504	data => WF_AUTOCANCEL,
		2505	cb => sub {
		2506	if ($Coro::current != $Coro::main) {
		2507	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2508	unless ++$bug_warning > 10;
		2509	return;
		2510	}
		2511
524	my $next = Event::time;	2512	$NOW = Event::time;
525	my $timer = Event->timer (at => $next, cb => sub {	2513
526	cf::server_tick; # one server iteration	2514	cf::server_tick; # one server iteration
		2515	$RUNTIME += $TICK;
		2516	$NEXT_TICK += $TICK;
527		2517
528	$next += $tick;	2518	$WAIT_FOR_TICK->broadcast;
		2519	$WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
		2520
		2521	Event::sweep;
		2522	Coro::cede_notself;
		2523
529	my $NOW = Event::time;	2524	# my $AFTER = Event::time;
		2525	# warn $AFTER - $NOW;#d#
530		2526
531	# if we are delayd by > 0.25 second, skip ticks	2527	# if we are delayed by four ticks or more, skip them all
532	$next = $NOW if $NOW >= $next + .25;	2528	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
533		2529
534	$_[0]->w->at ($next);	2530	$TICK_WATCHER->at ($NEXT_TICK);
535	$_[0]->w->start;	2531	$TICK_WATCHER->start;
		2532	},
		2533	);
		2534
		2535	{
		2536	BDB::max_poll_time $TICK * 0.1;
		2537	$BDB_POLL_WATCHER = Event->io (
		2538	reentrant => 0,
		2539	fd => BDB::poll_fileno,
		2540	poll => 'r',
		2541	prio => 0,
		2542	data => WF_AUTOCANCEL,
		2543	cb => \&BDB::poll_cb,
536	});	2544	);
		2545	BDB::min_parallel 8;
537		2546
538	Event::loop;	2547	BDB::set_sync_prepare {
539	}	2548	my $status;
		2549	my $current = $Coro::current;
		2550	(
		2551	sub {
		2552	$status = $!;
		2553	$current->ready; undef $current;
		2554	},
		2555	sub {
		2556	Coro::schedule while defined $current;
		2557	$! = $status;
		2558	},
		2559	)
		2560	};
540		2561
541	#############################################################################	2562	unless ($DB_ENV) {
542	# initialisation	2563	$DB_ENV = BDB::db_env_create;
543		2564
544	register "<global>", __PACKAGE__;	2565	cf::sync_job {
		2566	eval {
		2567	BDB::db_env_open
		2568	$DB_ENV,
		2569	$BDB_ENV_DIR,
		2570	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2571	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2572	0666;
545		2573
546	unshift @INC, $LIBDIR;	2574	cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
547		2575
548	load_extensions;	2576	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2577	$DB_ENV->set_lk_detect;
		2578	};
		2579
		2580	cf::cleanup "db_env_open(db): $@" if $@;
		2581	};
		2582	}
		2583	}
		2584
		2585	{
		2586	IO::AIO::min_parallel 8;
		2587
		2588	undef $Coro::AIO::WATCHER;
		2589	IO::AIO::max_poll_time $TICK * 0.1;
		2590	$AIO_POLL_WATCHER = Event->io (
		2591	reentrant => 0,
		2592	fd => IO::AIO::poll_fileno,
		2593	poll => 'r',
		2594	prio => 6,
		2595	data => WF_AUTOCANCEL,
		2596	cb => \&IO::AIO::poll_cb,
		2597	);
		2598	}
		2599
		2600	$WRITE_RUNTIME_WATCHER = Event->timer (
		2601	reentrant => 0,
		2602	data => WF_AUTOCANCEL,
		2603	after => 1,
		2604	interval => 10,
		2605	prio => 6, # keep it lowest so it acts like a watchdog
		2606	cb => Coro::unblock_sub {
		2607	write_runtime
		2608	or warn "ERROR: unable to write runtime file: $!";
		2609	},
		2610	);
		2611
		2612	END { cf::emergency_save }
549		2613
550	1	2614	1
551		2615

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